# Porsche Cayenne 958.1 GTS Handbook

Buying, servicing and modifying a 2013-14 Porsche Cayenne GTS (958.1, 4.8 V8). By Tim Neilen. Researched 20/09/2026. Web version: https://tim.neilen.com.au/cayenne/

I'm hunting for a 2013-14 958.1 Cayenne GTS - the last of the naturally aspirated V8s - and I'd like to do most of the servicing myself. So I built an agent stack to do the homework: five research streams across forums, owner reports and Australian specialists, plus 40-odd YouTube videos read through their transcripts so I didn't have to sit through them all. Everything here links back to where it came from.

It was researched in September 2026, so it will date. It isn't advice - check part numbers against the car's VIN, and get any car you're serious about inspected.

## Which 958 Cayenne to buy: the verdict

The **2013–14 958.1 GTS** is the sweet spot: the last naturally aspirated V8, past the early-958 faults, and workable from the top.

### Why

- **4.8 V8 without turbos.** Plugs, coils, filters and fluids are driveway jobs; the 958.2's twin-turbo V6 is “buried”.
- **Clear of the early faults.** The cam-bolt failures stop at builds before 13/09/2011; bore scoring is rare on the 958 4.8.
- **Nothing GTS-specific fails.** Its weak points are shared with the S, so parts and know-how are everywhere.

### Alternatives

- **2013–14 958.1 S** (same V8) at around $37k is the value pick, and the difference buys a healthy repair fund. The GTS premium is desirability, not reliability.
- **MY16 958.2 GTS** ($48–55k) if the V8 isn't the point: faster and newer, but harder to service at home.

### Avoid

- **Hybrids** - a high-voltage battery runs A$20–26k.
- **Diesel** for a home mechanic - its big failures are engine-out jobs.
- **957s** unless MY09–10 with a clean borescope; **9Y0s** start well above 958 money.

### The one big risk

**The transfer case.** Twelve YouTube channels and every forum stream name it the 958's weak point. Change its fluid every 30,000–60,000 km, as owners and specialists do (Porsche's schedule says 240,000 km). It's a driveway job - torque the plugs carefully, the case is aluminium. Ask every seller when it was last done, and keep A$6–8k in reserve until the history is clear. And assume **air suspension**: Australian S and GTS cars came with it as standard.

## Before you buy a 958 Cayenne GTS

### paperwork

- **Oil services every 12 months or 15,000 km, with no stretched intervals.** Service history matters more than mileage; stretched oil intervals are a red flag.
- **Spark plugs done every 45,000 km or 4 years.** Worn plugs and coils cause misfires around 100-130k km; plugs never done by 90k km is a red flag.
- **Evidence of transfer case, diff and ATF fluid changes.** Fluid changes prevent and often fix transfer case slipping; the factory 'lifetime' 240,000 km interval is too long.
- **Invoice for the revised thermostat housing (94810608002), water pump and aluminium pulley.** The glued pipe at the thermostat housing is the top coolant risk; the revised housing uses threaded pipes.
- **Any transfer case replacement, with invoice and part number.** A recent replacement with no invoice is a red flag; a documented replacement adds value.
- **Get the build option list by VIN from a Porsche Centre: air suspension, PDCC, PTV Plus, PCCB.** Each option changes running costs; PTV Plus cars see more rear diff noise, PDCC adds a hydraulic system.
- **Ask a Porsche Centre to run the VIN for open campaigns.** AU recall history includes a 2015 under-bonnet fuel leak recall on petrol models.
- **Confirm the engine is the 4.8 V8, especially on any MY15-plated car.** The July 2014 facelift (958.2) moved the S and GTS to a 3.6 twin-turbo V6.
- **On any 2011 S or Turbo, check the build date against 28/04/2010-13/09/2011 and whether the cam bolts were replaced.** Shearing VarioCam bolts can stall the engine and, in the worst case, need a new engine.

### scan

- **Read stored and pending codes: misfires, P0016-P0019 cam/crank correlation, P0171/P0174 lean, air suspension and transfer case faults.** Surfaces coil, PCV, timing and driveline faults the seller may not mention.
- **Watch ATF temperature behaviour with the scan tool.** The Aisin 8-speed needs correct fluid level and condition; temperature is read by scan tool.

### test drive

- **Engine starts easily and settles to a steady idle almost immediately.** CarsGuide's basic health check; rough idle can point to coils, plugs, PCV or carbon.
- **At full steering lock, accelerate hard and feel for hop or slip.** The standard test for a failing transfer case.
- **Feel for shudder at low speed and in turns, and RPM flare followed by a lurch between shifts.** Binding or slipping transfer case clutch pack.
- **Listen for harsh 2-3 upshifts and a clunky 5-4 downshift, and slurred shifts when warm.** Valve body issues, or the transfer case slipping.
- **Feel for thumping or vibration under the centre console on acceleration, or a whine that fades as it warms.** Failed driveshaft centre support bearing.

### under the car

- **If possible, see the car after it has been parked overnight and check for a sagging corner.** A corner dropping overnight is the typical air strut leak.
- **Look for coolant crust under the engine and at the rear crossover near the firewall.** Rear coolant fittings are a secondary leak point on the 958 V8.
- **Check the timing chain cover area and rear main seal for oil.** A timing cover leak is an engine-out reseal per Porsche's bulletin - walk away or price it in.
- **Inspect the driveshaft centre bearing rubber for cracks.** The rubber dry-rots at 10-15 years; the OEM part is a whole driveshaft.
- **Check disc lips and pad life; GTS front discs should be 360 mm; confirm any yellow (PCCB) calipers are genuine.** Brakes are a major running cost; painted calipers can pass off steel brakes as ceramic.
- **Look for off-road scars underneath and trolley or parking dents.** CarsGuide advises passing on cars that look off-roaded unless the price reflects it.

### engine bay

- **Sweet coolant smell when hot, crust at the front thermostat housing and under the intake, low reservoir level.** The glued thermostat housing pipe and plastic vent pipes are the top coolant failures.
- **Check the valve covers for oil and listen for a whistle at idle.** A whistle usually means the integrated PCV diaphragm has failed and the cover needs replacing.
- **Borescope a few cylinders.** Bore scoring is rare on the 4.8 but not zero; cheap insurance.

### cabin

- **Test every button and switch, and the PCM.** 958 electrics are sensitive to weak batteries; trim buttons crack.
- **Open every door from the outside handle, especially the rear passenger door.** Door lock actuators fail, rear passenger first.
- **Run the Bose audio and listen for dropouts or a pop at start-up.** The Bose amplifier in the boot is a common failure (~£900 UK).
- **Check the front footwells and carpets for damp or a musty smell.** Blocked sunroof drains flood the footwells, where control modules sit.
- **Cycle every ride height level, time the compressor and watch for chassis warnings.** Slow raising or warnings point to leaking struts or a tired compressor.
- **Check the rear seats for kick damage and the trim for cracks and rattles.** Signs of rough family use; trim is fragile.

### Ask the seller

- **Can I see the full service history - who did each service, and at what intervals?** Service history matters more than mileage; dealer-to-independent jumps with gaps are a red flag.
- **Has the thermostat housing been replaced with the revised threaded version, and when were the water pump and pulley done?** The glued coolant pipe is the top engine-bay risk; a documented fix is worth money.
- **Has the transfer case ever been replaced, or its fluid changed? Do you have the invoice and part number?** The transfer case is the biggest driveline risk; fluid changes are the main prevention.
- **When were the spark plugs and coils last done?** Plugs are due every 45,000 km; plugs and coils are a likely 100-130k km job.
- **Have the ATF and diff fluids ever been changed?** The factory says 240,000 km; owners change them much earlier.
- **Does it ever need coolant or oil topped up between services?** Coolant top-ups without a documented repair point to a slow leak.
- **Has any air suspension work been done - struts, compressor or 'no fault found' visits?** Air suspension is standard on AU V8s and a major cost at this mileage.
- **Has any oil leak been noted at a service, especially at the timing chain cover?** A timing cover leak is an engine-out reseal.
- **How old is the battery?** Weak batteries cause electrical faults on the 958.
- **Which options does it have - air suspension, PTV Plus, PDCC, ceramic brakes?** Each changes running costs and what can fail.
- **Has there ever been water in the footwells, or have the sunroof drains been cleared?** Flooded footwells can kill control modules.
- **Has recall work been done?** Confirms open campaigns such as the petrol fuel-leak recall have been closed.
- **Has the car been used off-road?** CarsGuide advises passing on off-roaded cars unless priced accordingly.
- **Is there a known fault or reason behind the asking price?** A car priced well below similar ones (e.g. the $44,500 WA GTS) needs an explanation before it's a bargain.

### Pre-purchase inspections

- [Prestige & Performance](https://prestigeandperformance.com.au/porsche-service/), Capalaba (also Coorparoo) (QLD) - Cayenne minor service $300-500, major $700-1,200; 2 yr / 30,000 km warranty
- [SemCar Automotive Group](https://semcarbrisbane.com/about-us/), Capalaba (QLD) - Claims labour 30-50% below dealer; 4.9 stars from 89 reviews (site claim)
- [Wayne Park](https://www.waynepark.com.au/porsche-service-brisbane/), Milton (QLD) - 4.9 Google rating (site claim); no published prices
- [TD Automotive Specialists](https://tdautomotive.com.au/), Albion (QLD)
- [Porsche Centre Gold Coast](https://dealer.porsche.com/au/goldcoast/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), Southport (QLD) - 92A 2011-2014: annual $720, intermediate $1,007.52-1,278.52, major $1,451.76-1,726.52; brake fluid $270.64; spark plugs $492.53-859.56; transmission oil $653.20-1,208.96
- [NINEAUTO](https://nineauto.com.au/search/pre+purchase/), Highett (VIC) - PPI $850 incl GST ($500 for PFA members)
- [Porsche Centre Melbourne](https://dealer.porsche.com/au/melbourne/en-AU/Demonstrator-and-Pre-Owned-Cars/Pre-Purchase-Inspection), Collingwood (VIC)
- [Porsche Centre Sydney South](https://dealer.porsche.com/au/sydneysouth/en-AU/Demonstrator-and-Pre-Owned-Cars/Pre-Purchase-Inspection), Alexandria (NSW)
- [PRTechnology](https://www.prtechnology.com.au/pages/pre-purchase-inspections), Sydney (NSW)

### Buying interstate

- **Safety certificate** Needed when transferring to Queensland registration from another state. Max fee $102.70 for light vehicles (from 1 July 2026). Private-seller certificates last 2 months or 2,000 km. ([TMR safety certificates](https://www.qld.gov.au/transport/registration/roadworthy))
- **14-day rule** If the car is currently registered in another state with plates attached, you have 14 days to register it in Queensland. ([TMR register a vehicle](https://www.qld.gov.au/transport/registration/register/vehicle))
- **Documents and inspection** Evidence of identity, evidence of garaging address, CTP certificate, safety certificate. Bring the documents and the vehicle to a transport and motoring service centre. ([TMR rego help tool (used vehicles)](https://www.qld.gov.au/transport/registration/register/rego-used-vehicle))
- **Vehicle registration duty** 7+ cylinders: $4 per $100 up to $100,000 (about $2,200 on a $55,000 car). 5-6 cylinders: $3.50 per $100 (about $1,925 at $55,000). Whether duty is charged twice if rego is first transferred in the seller's state was not verified. ([TMR duty rates](https://www.qld.gov.au/transport/registration/fees/duty/rates))
- **12-month registration and CTP** 7-8 cylinders $1,333.75-1,346.75; 5-6 cylinders $1,089.35-1,102.35 (from 1 July 2026). ([TMR registration costs](https://www.qld.gov.au/transport/registration/fees/cost))
- **Transport to Brisbane** PrixCar / Move My Wheels door-to-door, quotes guaranteed 28 days, 1300 660 616. Indicative prices not verified - get two or three quotes. ([PrixCar](https://www.prixcar.com.au/))
- **Fly in and drive home** Approximate road distance to Brisbane: Sydney 900 km, Melbourne 1,700 km, Perth 4,300 km. Doubles as a long road test.
- **Interstate PPI** VIC: NINEAUTO ($850) or Porsche Centre Melbourne. NSW: PRTechnology or Porsche Centre Sydney South. WA: Porsche Centre Perth; independent Perth specialists not researched. ([NINEAUTO PPI](https://nineauto.com.au/search/pre+purchase/))
- **Import tax on overseas parts** Consignments over AU$1,000 need a formal import declaration with duty, 10% GST and an import processing charge. ([ABF import processing charge](https://www.abf.gov.au/importing-exporting-and-manufacturing/importing/cost-of-importing-goods/charges/import-processing-charge))

## 958 Cayenne GTS factory options and option codes

### How to find a car's options

- **The option sticker.** On earlier Cayennes the list of three-character option codes is printed on a sticker in the service book and on another under the boot floor near the spare wheel. On 958s it's hit and miss - some owners report the service book only carries a black label with the VIN and engine code - so lift the boot floor and look. ([6speedonline.com](https://www.6speedonline.com/forums/cayenne-955-957/182566-options-sticker-location.html), [6speedonline.com](https://www.6speedonline.com/forums/cayenne-958/351737-does-958-have-options-codes-sticker.html), [pelicanparts.com](https://www.pelicanparts.com/techarticles/Porsche-Cayenne/73-BODY-Identifying_Option_Codes/73-BODY-Identifying_Option_Codes.htm))
- **A Porsche Centre printout.** Give any Porsche Centre or independent specialist with PIWIS the VIN and ask for the factory equipment list. It's the most reliable source outside the US. ([rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1504196-how-to-tell-if-a-cayenne-has-pdcc-ptv.html), [pistonheads.com](https://www.pistonheads.com/gassing/topic.asp?h=0&f=48&t=1983520))
- **Porsche Production Specification.** Porsche's online vehicle documentation service sells a Production Specification with the original options, colours and build date for US$150. Porsche says it covers all VINs, but it's run by Porsche Cars North America, so check it will issue one for a non-US car before paying. The Classic Technical Certificate doesn't cover the 958 - only the first-generation Cayenne. ([newsroom.porsche.com](https://newsroom.porsche.com/en_US/2022/technology/porsche-vehicle-documentation-online-service-30039.html))
- **VIN build-sheet sites.** vinanalytics.com returns a full option list for many Cayennes with a free account. Packages hide their contents - a Turbo S includes PDCC and PTV Plus without listing them - so read the list against the sales brochure for that model year. ([rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1504196-how-to-tell-if-a-cayenne-has-pdcc-ptv.html))
- **Physical tells.** Sport Chrono has a stopwatch on top of the dash. PCCB has yellow calipers - check they're genuine, not painted. ([stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [pistonheads.com](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634))

The web version has a sticker decoder: paste the codes from the sticker and it matches them against this table. https://tim.neilen.com.au/cayenne/#decoder

### 958.1 option codes

| Code | Option | What it is and why it matters | Sources |
|---|---|---|---|
| 1BK | Air suspension with PASM - GTS: standard in Australia, optional elsewhere | Three-chamber air springs with adaptive dampers and five ride heights. Standard on Australian-delivered S and GTS cars; optional on the GTS elsewhere. Air strut leaks and compressor burn-out are the running cost to budget for. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [carsguide.com.au](https://www.carsguide.com.au/car-reviews/porsche-cayenne-gts-2012-review-71910), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 1BH / 1BZ | PASM on steel springs - GTS: standard outside Australia | Adaptive dampers on steel springs - the GTS's global standard set-up, 24 mm lower than an S. Both codes are listed as PASM; which one a given car shows varies. A steel-spring GTS avoids air-suspension repairs but is rare in Australia. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 0AW | PDCC Porsche Dynamic Chassis Control (sought after) | Active anti-roll bars that all but eliminate body roll. Only available with air suspension. Sought after, but it's an extra hydraulic system to maintain. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [stuttcars.com](https://www.stuttcars.com/porsche-data/porsche-equipment-options-codes/cayenne-codes/) |
| 1Y1 | PTV Plus Porsche Torque Vectoring Plus (sought after) | Brakes the inside rear wheel in corners and adds an electronically controlled locking rear diff. Often named the best performance option on the 958. Rear diff noise and failure show up mainly on PTV Plus cars. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [stuttcars.com](https://www.stuttcars.com/porsche-data/porsche-equipment-options-codes/cayenne-codes/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1335916-958-rear-diff-crunching-noises.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1269580-rear-differential-replacement.html) |
| QR4 | Sport Chrono (sought after) | Dashboard stopwatch plus a performance display in the PCM. The GTS was the first Cayenne to offer it. Easy to spot: the stopwatch sits on top of the dash. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [stuttcars.com](https://www.stuttcars.com/porsche-data/porsche-equipment-options-codes/cayenne-codes/) |
| QR5 | Sport Chrono Plus | Listed alongside QR4 as the Plus version of the package. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 0P8 | Sports exhaust - GTS: standard | Exhaust flaps that open in Sport mode. Standard on the GTS, so a GTS without it has been changed. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 0P9 | Sports exhaust, black tailpipes | As 0P8 with black tailpipe trims. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 1LY | PCCB front, 19" (yellow calipers) | Porsche Ceramic Composite Brakes - about half the weight of iron discs, yellow calipers. Rare and expensive to replace. Check the yellow calipers are genuine and not painted. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [stuttcars.com](https://www.stuttcars.com/porsche-data/porsche-equipment-options-codes/cayenne-codes/), [pistonheads.com](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634) |
| 1LV | PCCB front, 20"+ (yellow calipers) | Larger PCCB front disc option. As 1LY. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [pistonheads.com](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634) |
| 2EH | PCCB rear, 19" (yellow calipers) | Rear ceramic discs that pair with the PCCB fronts. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 8G1 | PDLS Plus Porsche Dynamic Light System Plus | Adds dynamic high-beam control on top of PDLS. PDLS itself is standard on the GTS. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 8T3 | Adaptive cruise control | Radar cruise with distance warning and overtaking assist. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 7Y1 | Lane Change Assist | Two rear radar sensors watch the blind spots up to 70 m back, from 30 to 250 km/h. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 7X8 | ParkAssistant with camera | Front and rear parking sensors plus a reversing camera. 7X1 is listed with the same description. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 7X3 / 7X9 | Reversing camera | Rear camera; both codes are listed with this name. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 3FU | Panoramic roof (sought after) | Fixed-and-sliding glass roof over both rows. Stuttcars calls it a must-have on a used 958. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-data/porsche-equipment-options-codes/cayenne-codes/) |
| 3FE | Electric glass sunroof | Conventional tilt-and-slide sunroof. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 9VJ | Burmester high-end sound system (sought after) | Burmester 1000 W system. Stuttcars rates it the best luxury upgrade on the 958. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-data/porsche-equipment-options-codes/cayenne-codes/) |
| 9VL | Bose sound system | Bose 585 W system. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 9VK | Sound package | Base upgraded audio. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| Q4P | GTS sports seats, 8-way - GTS: standard | The GTS's standard 8-way electric sports seats with Alcantara centres. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| Q1J | GTS sports seats, front and rear | GTS sports seat package including the individual-style rear seats. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| PE6 | 18-way adaptive sports seats with memory | Adjustable side bolsters and memory. Listed in one code list only - confirm on the car. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 4D3 | Front seat ventilation | Ventilated front seats. Worth having in an Australian summer. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 4A4 | Heated seats, front and rear | Heating for both rows (4A3 is front only). | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 2PX | Alcantara SportDesign steering wheel with paddles | Alcantara rim on the GTS's standard SportDesign wheel. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 2PH | Heated steering wheel | Heated rim. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 6FQ | GTS interior package, Carmine Red | Carmine Red stitching, GTS headrest embroidery, belts and mat stitching. GTS-only. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 6FR | GTS interior package, Peridot | As 6FQ in Peridot green. GTS-only. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| 5MH | Carbon interior trim | Carbon fibre trim panels. Wood options include 5MG dark walnut and 5ML Yachting Mahogany. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 9AH | 4-zone climate control | Separate temperature control for the rear seats. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| GY1 | Power tailgate closing | Electric closing aid for the tailgate. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 4KF | Dark tinted rear glass | Privacy glass behind the B-pillars. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 4X4 | Rear side airbags | Side airbags for the outer rear seats. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 1D3 | Electrically retractable towbar | Tow ball folds away electrically. 1D1 is the removable, lockable ball; 1D7 is preparation only. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| 7RJ | Navigation, Australia | Australian map data for the PCM (7T1 / 7Q2 are the navigation module). The factory maps are long out of date - CarPlay retrofits are covered under Mods. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| CZ4 | 21" 911 Turbo Design II wheels | 21 x 10 in. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| CQ1 | 21" SportEdition wheels, black | 21 x 10 in, black. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| CN7 | 20" SportDesign II wheels | 20 x 10 in. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |
| C5B / CP5 | 20" RS Spyder Design wheels | 20 in; both codes are listed with this name at different widths. | [911uk.com](https://911uk.com/porsche/cayenne-panamera-build-option-codes.57869/) |

## Known faults on the 958 Cayenne GTS

958.1 GTS and S, 4.8 V8 - what fails, what it costs, and who fixes it. Most likely first.

### Glued aluminium coolant pipe lets go at the thermostat housing

- Likelihood: Likely. DIY: DIY with care. System: cooling.
- Symptoms: Coolant smell when hot, puddles under the engine, sudden coolant loss (one owner heard a 'pop'), rising engine temperature.
- When: Any mileage - reports from under 10k to over 200k miles; several around 80-83k miles (~130k km); one 2013 GTS at 38k miles
- Cost: Dealer fix US$1,800-2,800. Parts ~US$310 (revised housing) + ~US$200 (thermostat); ~6 h book labour, intake manifold and injection rail off.
- Prevent it: Fit the revised threaded housing (94810608000 superseded by 94810608002) before it fails; ask whether it has been done.
- Evidence: widely reported. Sources: [Rennlist: 2011-2014 V8 coolant pipe glue](https://rennlist.com/forums/cayenne-958-2011-2018/1045931-2011-2014-v8-serious-issue-coolant-pipe-glue.html), [Rennlist: coolant pipe glue (page 8)](https://rennlist.com/forums/cayenne-958-2011-2018/1045931-2011-2014-v8-serious-issue-coolant-pipe-glue-8.html), [Carsales: buying a used Cayenne (2010-18)](https://www.carsales.com.au/editorial/details/buying-a-used-porsche-cayenne-2010-18-145554/)

### Transfer case clutch pack binds or slips

- Likelihood: Likely. DIY: Specialist. System: drivetrain.
- Symptoms: Jerky shifts in low gears under power (binding); brief RPM flare then a lurch on shifts (slipping); shudder at low speed and in turns; hop or slip when accelerating hard at full steering lock.
- When: Binding failures under ~30k miles; slipping failures over ~50k miles (~80k km). One 2011 S had cases at 14.9k, 71k, 83k and 107k miles.
- Cost: Reman ~US$2,400 incl. US$900 refundable core; ~US$6k dealer (one owner); UK specialist 'approach £3,000 including labour'. The US 10-year extended warranty has expired on every 2011-2014 car.
- Prevent it: Change the transfer case fluid every 25-30k km (owners do 15-20k miles) despite the factory 240,000 km interval; fluid changes 'have fixed a LOT of them'.
- Evidence: widely reported. Sources: [Rennlist: transfer case - what actually fails](https://rennlist.com/forums/cayenne-958-2011-2018/1035471-transfer-case-what-actually-fails.html), [Rennlist: transfer case failure](https://rennlist.com/forums/cayenne-958-2011-2018/1290994-transfer-case-failure.html), [Rennlist: highest mileage 958](https://rennlist.com/forums/cayenne-958-2011-2018/1312383-highest-mileage-958-cayenne.html), [Sports Vehicle Performance (UK): 958 buyers guide](https://www.sportsvehicleperformance.co.uk/post/porsche-cayenne-958-buyers-guide), [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634)

### Air strut leaks and compressor burn-out (air is standard on Australian S and GTS)

- Likelihood: Likely. DIY: DIY with care. System: suspension.
- Symptoms: A corner sags overnight (usually the O-ring at the top of the air spring); compressor runs long; 'Chassis System Failure' or 'Regulation not permissible' warnings.
- When: One aggregator: 80-120k km, spreading corner to corner. One high-mileage GTS had all struts done at 150k miles.
- Cost: US: front strut ~US$1,320, rear ~US$1,257 (eEuroparts); Arnott new ~US$800, rebuilt OEM ~US$1,000 each; compressor part US$459; valve block ~US$367.
- Prevent it: Fix a leaking strut early so the compressor isn't over-worked. One experienced owner now prefers genuine Porsche struts over Arnott.
- Evidence: widely reported. Sources: [eEuroparts: 958 air suspension repair guide](https://eeuroparts.com/blog/porsche-cayenne-958-air-suspension-in-depth-repair-guide), [Rennlist: air strut replacement thoughts](https://rennlist.com/forums/cayenne-958-2011-2018/1242503-air-suspension-strut-replacement-thoughts-and-concepts.html), [Rennlist: buying a high-mileage 958.1 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1523502-buying-a-high-mileage-958-1-gts.html), [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634), [CarsGuide: Cayenne GTS 2012 road test (AU)](https://www.carsguide.com.au/luxury/porsche-cayenne-gts-2012-review-road-test-71913), [Carchecker (aggregator, low quality): 958 GTS](https://www.carchecker.pro/reports/porsche_cayenne_gts_958.html)

### Worn spark plugs and failing ignition coils

- Likelihood: Likely. DIY: DIY with care. System: engine.
- Symptoms: Misfires under acceleration, rough idle.
- When: 60,000-80,000 miles (~100-130k km)
- Cost: AU dealer plugs $760 (every 45,000 km / 4 years); plugs + coils US$600-1,200 at a shop.
- Prevent it: Plugs every 45,000 km or 4 years. Coil connectors go brittle and the aluminium coil bolts are one-use - finger tight only.
- Evidence: widely reported. Sources: [Exotic Car Hacks: 958 GTS/Turbo buyers guide](https://www.exoticcarhacks.com/buyers-guides/porsche-cayenne-gts-turbo-second-generation-buyers-guide/), [Stuttcars: 2nd gen Cayenne buyers guide](https://www.stuttcars.com/porsche-buyers-guides/cayenne-2nd-gen-buyers-guide/), [Rennlist: V8 spark plug and coil DIY](https://rennlist.com/forums/cayenne-958-2011-2018/1310885-diy-video-spark-plugs-and-ignition-coils-v8-r-and-r.html), [Rennlist: maintenance after 100k km](https://rennlist.com/forums/cayenne-958-2011-2018/1430873-2014-cayenne-major-maintenance-items-and-high-chance-repairs-after-100k-km-81k-m.html), [Porsche Centre Doncaster: Cayenne service prices](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service)

### Heavy brake wear, and ABS/pad-wear sensor loom faults

- Likelihood: Likely. DIY: Easy DIY. System: suspension.
- Symptoms: Lipped discs, short pad life; brake/ABS warnings from damaged sensor looms that get misdiagnosed as worn pads. 958.1 GTS front discs are 360 mm (390 mm is the Turbo, and the GTS from 2016).
- Cost: UK specialist: '£500+ per axle; £1,000+ for a full set'. Brakes and tyres are the biggest running costs.
- Prevent it: Rear pads normally need no scan tool; rear rotors may need the scan tool's EPB service mode if the parking-brake drum has a lip.
- Evidence: widely reported. Sources: [Sports Vehicle Performance (UK): 958 buyers guide](https://www.sportsvehicleperformance.co.uk/post/porsche-cayenne-958-buyers-guide), [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634), [Rennlist: rear pads/rotors without a scanner](https://rennlist.com/forums/cayenne-958-2011-2018/1292329-is-it-impossible-to-diy-rear-pads-and-rotors-on-a-958-2-s-without-a-scanner.html), [Stuttcars: Cayenne GTS 2013-2014 specs](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/)

### Water pump seep and composite pulley failure

- Likelihood: Possible. DIY: DIY with care. System: cooling.
- Symptoms: Coolant seeping at the pulley or running down the timing case cover; a failed plastic pulley can take out the pump and belt.
- Cost: Parts: water pump 94810603301, V8 pulley 94810609101, thermostat 94810603401. Usually done with the thermostat housing job (dealer US$1,800-2,800 for that job).
- Prevent it: Replace the plastic pulley with an aluminium one whenever the pump is done - one owner's original pulley disintegrated ~500 miles after a new pump went in.
- Evidence: widely reported. Sources: [eEuroparts: 958 cooling system issues](https://eeuroparts.com/blog/porsche-cayenne-958-cooling-system-issues-explained), [Rennlist: 958 DIY water pump, t-stat, crossover, vent](https://rennlist.com/forums/cayenne-958-2011-2018/1137870-958-cayenne-diy-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html)

### Plastic coolant vent (Y) pipe and breather line under the intake crack or leak

- Likelihood: Possible. DIY: DIY with care. System: cooling.
- Symptoms: Coolant leak under the intake manifold; pipe cracks near its fittings with age.
- When: Owners cite coolant pipe failures around 70,000 miles (~110k km)
- Cost: One owner: ~US$150 for the pipe plus coolant as a DIY.
- Prevent it: Replace with the water pump/thermostat job while the intake is off.
- Evidence: anecdotal. Sources: [Rennlist: coolant pipe issue 958.1](https://rennlist.com/forums/cayenne-958-2011-2018/1039019-coolant-pipe-issue-958-1.html), [eEuroparts: 958 cooling system issues](https://eeuroparts.com/blog/porsche-cayenne-958-cooling-system-issues-explained), [Rennlist: maintenance after 100k km](https://rennlist.com/forums/cayenne-958-2011-2018/1430873-2014-cayenne-major-maintenance-items-and-high-chance-repairs-after-100k-km-81k-m.html)

### Valve cover leak / integrated PCV (air-oil separator) diaphragm failure

- Likelihood: Possible. DIY: DIY with care. System: engine.
- Symptoms: Whistle at idle, lean codes (P0171/P0174), oil leak at the valve cover, rising oil consumption.
- Cost: Dealer quotes reportedly US$4-5k; one owner did the passenger-side cover and O-rings for under US$75 DIY. Porsche's fix is a whole new cover.
- Evidence: anecdotal. Sources: [Rennlist: valve covers leaking](https://rennlist.com/forums/cayenne-958-2011-2018/1208550-valve-covers-leaking-2015-s.html), [Rennlist: buying a high-mileage 958.1 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1523502-buying-a-high-mileage-958-1-gts.html), [Rennlist: maintenance after 100k km](https://rennlist.com/forums/cayenne-958-2011-2018/1430873-2014-cayenne-major-maintenance-items-and-high-chance-repairs-after-100k-km-81k-m.html)

### Driveshaft centre support bearing rubber cracks

- Likelihood: Possible. DIY: DIY with care. System: drivetrain.
- Symptoms: Thumping or vibration under the centre console on acceleration; singing/whine under load that improves as it warms.
- When: Age-driven: rubber dry-rots and cracks at 10-15 years
- Cost: Porsche only sells the whole shaft ('over $3200 in parts' US). JXB clamp-on carrier ~US$300-330 plus a ~US$15 6007-2RS bearing (or Meyle unit).
- Evidence: widely reported. Sources: [Rennlist: JXB centre support bearing notes](https://rennlist.com/forums/cayenne-958-2011-2018/1494119-cayenne-958-jxb-driveshaft-center-support-bearing-replacement-notes.html), [GMP Performance: JXB carrier (vendor)](https://www.gmpperformance.com/product/777887/2011-2017-porsche-958-cayenne-jxb-driveshaft-center-support-bearing-carrier-upgrade/)

### Front wheel bearings, control arms and bushes

- Likelihood: Possible. DIY: DIY with care. System: suspension.
- Symptoms: Suspension noises from lower/upper arms or links; poor ride quality after air springs are fixed (subframe bushings).
- Cost: One owner: front wheel bearings ~US$1,000, suspension rebuild ~US$2,000.
- Evidence: anecdotal. Sources: [Rennlist: maintenance after 100k km](https://rennlist.com/forums/cayenne-958-2011-2018/1430873-2014-cayenne-major-maintenance-items-and-high-chance-repairs-after-100k-km-81k-m.html), [Rennlist: buying a high-mileage 958.1 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1523502-buying-a-high-mileage-958-1-gts.html)

### Weak 12 V battery causes electrical faults

- Likelihood: Possible. DIY: Easy DIY. System: electrical.
- Symptoms: Random electrical faults and warnings with an ageing battery.
- Cost: Battery replacement - not priced.
- Prevent it: Keep the battery healthy; test every button on inspection.
- Evidence: widely reported. Sources: [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634), [Rennlist: maintenance after 100k km](https://rennlist.com/forums/cayenne-958-2011-2018/1430873-2014-cayenne-major-maintenance-items-and-high-chance-repairs-after-100k-km-81k-m.html)

### Bose amplifier failure (in the boot)

- Likelihood: Possible. DIY: DIY with care. System: electrical.
- Symptoms: Sudden loss of all sound, or a muffled pop at start-up.
- Cost: UK: approaching £900 for Bose systems.
- Evidence: widely reported. Sources: [Sports Vehicle Performance (UK): 958 buyers guide](https://www.sportsvehicleperformance.co.uk/post/porsche-cayenne-958-buyers-guide), [Stuttcars: 2nd gen Cayenne buyers guide](https://www.stuttcars.com/porsche-buyers-guides/cayenne-2nd-gen-buyers-guide/)

### Door lock actuator failure (rear passenger first)

- Likelihood: Possible. DIY: DIY with care. System: body.
- Symptoms: Outside handle won't open the door; inside handle still works.
- Cost: Not priced.
- Evidence: widely reported. Sources: [Stuttcars: 2nd gen Cayenne buyers guide](https://www.stuttcars.com/porsche-buyers-guides/cayenne-2nd-gen-buyers-guide/), [Planet-9: passenger rear door lock actuator](https://www.planet-9.com/threads/passenger-rear-door-lock-actuator.250285/), [911UK: rear door unlocking problem 958](https://911uk.com/porsche/rear-door-unlocking-problem-958-cayenne.102513/)

### Blocked sunroof and scuttle drains flood the footwells

- Likelihood: Possible. DIY: Easy DIY. System: body.
- Symptoms: Water in the front footwells, damp carpet, musty smell; control modules in the footwell can be destroyed.
- Cost: Clearing drains is cheap; water-damaged modules can run to thousands.
- Prevent it: Clear the roof drains annually (in the US service schedule).
- Evidence: widely reported. Sources: [eCarGuides: clearing Cayenne water drains](https://ecarguides.com/maintenance-guides/how-to-inspect-clear-water-drain-ports-on-a-porsche-cayenne-955-957-958/), [Rennlist: major water leak in passenger footwell](https://rennlist.com/forums/cayenne-958-2011-2018/1141086-major-water-leak-in-passenger-footwell.html), [PCarwise: 958 maintenance schedule](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/)

### Fragile interior trim and rattles

- Likelihood: Possible. DIY: Easy DIY. System: body.
- Symptoms: Cracked vent sliders, window switches and flat centre-console buttons; rattling glovebox, centre cubby lids and cupholders.
- Cost: Not priced.
- Evidence: widely reported. Sources: [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634), [Stuttcars: 2nd gen Cayenne buyers guide](https://www.stuttcars.com/porsche-buyers-guides/cayenne-2nd-gen-buyers-guide/)

### 8-speed Tiptronic S (Aisin) harsh shifts / valve body

- Likelihood: Rare. DIY: Specialist. System: drivetrain.
- Symptoms: Hard 2-3 shifts; harsh 5-4 downshift; failure to shift cleanly under acceleration. Can also be the transfer case slipping.
- When: One valve body replaced under warranty at 45k miles (~72k km)
- Cost: Valve body not priced. ATF service: AU dealer $1,485-2,900; DIY kit ~US$350-450 vs ~US$575 at a US shop.
- Prevent it: ATF and filter service well before the factory 240,000 km interval.
- Evidence: anecdotal. Sources: [Rennlist: 958 Tiptronic S problem](https://rennlist.com/forums/cayenne-958-2011-2018/923501-958-tiptronic-s-problem.html), [Sports Vehicle Performance (UK): 958 buyers guide](https://www.sportsvehicleperformance.co.uk/post/porsche-cayenne-958-buyers-guide), [Carsales: buying a used Cayenne (2010-18)](https://www.carsales.com.au/editorial/details/buying-a-used-porsche-cayenne-2010-18-145554/), [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634), [Rennlist: transmission fluid change procedure](https://rennlist.com/forums/cayenne-958-2011-2018/1149998-transmission-fluid-change-procedure.html), [Porsche Centre Doncaster: Cayenne service prices](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [Porsche Centre Canberra: Cayenne service prices](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service)

### Oil leak from the timing chain cover

- Likelihood: Rare. DIY: Walk away. System: engine.
- Symptoms: Active oil leak at the timing chain cover.
- Cost: Porsche bulletin: 'the engine must be removed and the entire timing chain cover resealed'. Engine-out job - not priced.
- Evidence: anecdotal. Sources: [Porsche bulletin D460: timing chain cover repairs](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168745-0001.pdf), [Porsche bulletin 2000.2: timing chain cover repairs](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189923-0001.pdf), [Rennlist: timing cover oil leaks](https://rennlist.com/forums/cayenne-958-2011-2018/1177312-timing-cover-oil-leaks.html)

### Oil consumption

- Likelihood: Rare. DIY: Easy DIY. System: engine.
- Symptoms: Needing top-ups between services.
- Cost: Porsche allows up to ~0.8 L/1,000 km. Owners report from half a quart per 5-6k miles (2014 S) to 1 L per ~1,800-3,000 km (GTS). Claims of 'abnormally high' consumption are weak.
- Evidence: anecdotal. Sources: [Rennlist: engine and oil consumption](https://rennlist.com/forums/cayenne-958-2011-2018/1113225-engine-and-oil-consumption.html), [Exotic Car Hacks: 958 GTS/Turbo buyers guide](https://www.exoticcarhacks.com/buyers-guides/porsche-cayenne-gts-turbo-second-generation-buyers-guide/)

### Intake valve carbon build-up (direct injection)

- Likelihood: Rare. DIY: Specialist. System: engine.
- Symptoms: Rough idle or misfires despite good coils and plugs; improved throttle response after cleaning.
- Cost: Shop walnut blast ~US$800-1,200. DIY is possible but a full day with the intake off and a media blaster (documented on a 70k-mile 958.1 Turbo).
- Evidence: anecdotal. Sources: [Rennlist: DIY 958.1 CTT intake valve cleaning](https://rennlist.com/forums/cayenne-958-2011-2018/1201826-diy-958-1-ctt-intake-valves-cleaning.html), [Rennlist: 957 GTS carbon build-up](https://rennlist.com/forums/cayenne-955-957-2003-2010/1234222-957-gts-carbon-build-up.html)

### Cylinder bore scoring

- Likelihood: Rare. DIY: Walk away. System: engine.
- Symptoms: Found by borescope inspection; rare on the 958 4.8.
- Cost: Engine rebuild territory - not priced. Mainly a 955 4.5 V8 problem; specialists have seen 'some 958 v8s with scoring'.
- Prevent it: Borescope a few cylinders at the pre-purchase inspection.
- Evidence: widely reported. Sources: [Rennlist: 958 V8 (GTS) bore scoring](https://rennlist.com/forums/cayenne-958-2011-2018/1274839-958-v8-specifically-gts-bore-scoring.html), [PistonHeads: Cayenne PH Heroes thread](https://www.pistonheads.com/gassing/topic.asp?h=0&f=23&t=2012101&i=40), [PCA: bore scoring and how to prevent it](https://www.pca.org/news/bore-scoring-how-to-prevent-it)

### VarioCam adjuster bolts shear (2011 builds only)

- Likelihood: Rare. DIY: Specialist. System: engine.
- Symptoms: Engine stall, loss of brake vacuum and power steering, check engine light.
- When: Only 4.8 V8s built 28/04/2010 to 13/09/2011 (2011 MY S and Turbo). No GTS and no 2014 S.
- Cost: Worst case a new engine at 'circa £30,000' (PH). US recall 17V368; no UK recall; no Australian recall found.
- Prevent it: Only relevant if considering a 2011 S or Turbo - check build date and whether the bolts were replaced.
- Evidence: widely reported. Sources: [PCGB forum: camshaft controller failure](https://www.porscheclubgb.com/forum/threads/attention-2010-2011-turbo-and-s-owners-%E2%80%93-camshaft-controller-failure-us-safety-recall.159533/), [Rennlist: Cayenne recall - bad VarioCam bolts](https://rennlist.com/forums/cayenne-958-2011-2018/995342-cayenne-recall-bad-variocam-bolts.html), [PistonHeads: 958 used buying guide](https://www.pistonheads.com/news/ph-buying-guides/porsche-cayenne-958--ph-used-buying-guide/42634), [Fifth Gear: camshaft adjuster bolts](https://fifthgear.biz/fifthgear-blog/porsche-cayenne-and-panamera-camshaft-adjuster-bolts/)

### High-pressure fuel pump failure

- Likelihood: Rare. DIY: Specialist. System: engine.
- Symptoms: Rough idle after start then a reduced-power warning, long cranking, white smoke, codes P1023/P1026.
- When: One documented case at 75k miles (2011 958 Turbo)
- Cost: ~US$1,800 all-in with a rebuilt pump (DIY, ~5 h); shops quote 3-4 h labour. Tight, blind location in the engine valley; fire risk.
- Evidence: anecdotal. Sources: [Rennlist: HPFP replacement DIY](https://rennlist.com/forums/diy-cayenne/1051940-high-pressure-fuel-pump-replacement.html), [eEuroparts: 958 HPFP issues](https://eeuroparts.com/blog/porsche-cayenne-958-high-pressure-fuel-pump-issues)

### Rear differential noise (mainly PTV Plus cars)

- Likelihood: Rare. DIY: Specialist. System: drivetrain.
- Symptoms: Crunching or grinding noise from the rear diff; metallic residue in drained oil is a bad sign.
- Cost: New unit ~US$3,500 from Porsche or ~US$2,000 from online dealers.
- Prevent it: Diff fluid changes - some noises cleared with fresh fluid.
- Evidence: anecdotal. Sources: [Rennlist: 958 rear diff crunching noises](https://rennlist.com/forums/cayenne-958-2011-2018/1335916-958-rear-diff-crunching-noises.html), [Rennlist: rear differential replacement](https://rennlist.com/forums/cayenne-958-2011-2018/1269580-rear-differential-replacement.html), [Rennlist: highest mileage 958](https://rennlist.com/forums/cayenne-958-2011-2018/1312383-highest-mileage-958-cayenne.html)

### PCM infotainment freezes or resets

- Likelihood: Rare. DIY: Specialist. System: electrical.
- Symptoms: PCM freezing, resetting or failing; software updates released but issues persist.
- Cost: Not priced.
- Evidence: anecdotal. Sources: [Sports Vehicle Performance (UK): 958 buyers guide](https://www.sportsvehicleperformance.co.uk/post/porsche-cayenne-958-buyers-guide)

## 958 Cayenne service schedule, fluids and torques

- **Jack mode.** Set Normal level with the ride-height rocker. With the ignition on, hold the rocker switch FORWARD for 10-15 seconds. Release it: a message appears on the instrument display and the car can now be raised. To switch levelling back on, hold the rocker forward for 10-15 seconds again, or just drive off. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=199), [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=281), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-engine-oil-filter-on-a-porsche-cayenne-v8-958/))
- **Jacking points.** Lift only at the four sill jacking points (the jack head must seat in the cut-out) or at the jacking points for a trolley jack or lifting platform. Never jack under the engine, transmission or axles. For jack stands, eCarGuides jacks at the front centre crossmember and at the rear crossmember just ahead of the rear diff, between the exhaust pipes, then puts the stands under the jacking points. The car must be level for the transfer case, diff and ATF levels. Never work under a car supported only by a jack. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=276), [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=281), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-transfer-case-oil-on-a-porsche-cayenne-958/), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-the-automatic-transmission-fluid-on-a-porsche-cayenne-958/))
- **Brake size.** The brief assumed 390 mm front brakes. Porsche's MY14 brochure says the GTS has 360x36 mm front discs (390 mm is the Turbo). eCarGuides, Stuttcars and two Rennlist threads ('390 added to GTS for 2016 and up'; 'Red calipers on a GTS - 360mm') agree; eEuroparts disagrees. Measure the disc or check the VIN option list. ([manua.ls](https://www.manua.ls/porsche/cayenne-2014/manual), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1049241-confused-about-front-rotor-size-350mm-or-360mm-or-390mm.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1508111-2012-s-brake-rotors-350-or-360mm.html), [eeuroparts.com](https://eeuroparts.com/blog/how-to-service-porsche-cayenne-958-brakes))
- **Stands, always.** Jack mode stops the car levelling but doesn't lock it - one owner had an air spring deflate in jack mode.

### Service schedule

| Item | Every | Months | What owners do | Source |
|---|---|---|---|---|
| Engine oil and filter (Annual Maintenance) | 15,000 km | 12 | Many owners change at 7,500-10,000 km or yearly, whichever comes first (eCarGuides recommends about 7,500 km). Reset the counter with the scan tool. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-engine-oil-filter-on-a-porsche-cayenne-v8-958/), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Intermediate Maintenance (inspection) | 30,000 km | 24 |  | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Major Maintenance (inspection) | 60,000 km | 48 |  | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Safety and maintenance inspection (brakes, tyres, steering and suspension joints, driveshaft, leaks, air suspension, underbody) | 15,000 km | 12 | Look closely at the thermostat-housing area and the water pump for coolant crust, and at the transfer case for weeping. | [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Cabin (dust and pollen) filter | 30,000 km | 24 | It's a 15-minute DIY with no tools beyond Torx, so many owners change it more often. That habit isn't sourced. | [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-cabin-air-filter-on-porsche-cayenne-958/), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Engine air filters (x2) | 120,000 km | 48 | PcarWise says to ignore the long interval and replace sooner (about 40,000 miles / 64,000 km). Replace earlier on dusty roads. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-engine-air-filters-on-a-porsche-cayenne-958-s-gts-turbo-turbo-s/), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Spark plugs (x8) | 45,000 km | 48 | eCarGuides suggests replacing the coils at every second plug change. Coils typically fail at 80,000-100,000 km. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-spark-plugs-ignition-coils-a-porsche-cayenne-s-gts-958/) |
| Brake fluid | - | 24 | Bleed with a pressure bleeder. About 1.6 L flushes the whole system. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/goldcoast/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-flush-brake-fluid-on-a-porsche-cayenne/), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| Automatic transmission fluid (ATF) and filter | 240,000 km | 192 | Owners and specialists do it far sooner: eCarGuides and PcarWise say 8 years / 80,000 miles (about 120,000 km). Some owners do two roughly 6 L drain-and-fills to refresh more of the fluid. Old fluid is linked to harsh shifts. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-the-automatic-transmission-fluid-on-a-porsche-cayenne-958/), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1018243-changing-atf-fluid.html) |
| Transfer case (PTM) fluid | 240,000 km | 192 | Owners and specialists use 30,000-60,000 km (Rennlist owners: every 15,000-20,000 miles; PcarWise: 40,000 miles; eCarGuides: 120,000 km). Why: the multi-plate clutch coupling wears its fluid, and fresh fluid often cures early binding, jerky shifts or slipping. A replacement case costs about US$2,300-4,000. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-transfer-case-oil-on-a-porsche-cayenne-958/), [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1035471-transfer-case-what-actually-fails.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1184978-new-owner-and-highest-mile-gts-7.html) |
| Front and rear differential oil | 240,000 km | 192 | Owners change it every 30,000-60,000 km. One Rennlist owner found it 'totally black' only 20,000 miles after the last change. PTV Plus (locking rear) diffs are the ones prone to noise, and fresh fluid has cured some. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [dealer.porsche.com](https://dealer.porsche.com/au/canberra/en-AU/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-front-differential-oil-on-a-porsche-cayenne-2011-2018/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1267928-psa-change-your-diff-fluid.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1184978-new-owner-and-highest-mile-gts-7.html) |
| Engine coolant | - | - | Porsche treats it as lifetime and dealers say top up only. Owners and eEuroparts suggest replacing it every 4-5 years, or about 100,000 km. It needs a vacuum fill. | [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/), [eeuroparts.com](https://eeuroparts.com/blog/porsche-coolant-guide-everything-you-need-to-know), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1297867-do-you-replace-coolant-in-cayenne-or-any-other-porsche.html) |
| Drive (serpentine) belt | - | 72 | Inspect it at every service. Replace it along with the water pump, tensioner and idlers if you do that job. | [pcarwise.com](https://www.pcarwise.com/local-help/porsche-maintenance-schedules/cayenne-maintenance/958-cayenne-maintenance-schedule/) |
| PDCC reservoir (only if PDCC is fitted) | 90,000 km | 72 |  | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-pdcc-reservoir-a-porsche-cayenne-958/) |
| Tyre sealant in the repair kit | - | 48 | Check the date on the bottle. | [dealer.porsche.com](https://dealer.porsche.com/au/doncaster/en-AU/Service/Service-Products-and-Pricing/Cayenne-Service) |
| Clear roof, sunroof and scuttle drains | - | 12 | Blocked drains flood the footwells, where control modules sit. Brisbane storm season makes this worth doing. | [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-inspect-clear-water-drain-ports-on-a-porsche-cayenne-955-957-958/) |
| 12 V battery test | - | 24 | The OEM battery typically lasts about 5 years (owner reports). | [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-test-replace-battery-on-porsche-cayenne-v8-958/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/921846-958-battery-questions.html) |
| Wiper blades (inspect) | - | 12 |  | [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-inspect-replace-windshield-wipers-on-a-porsche-cayenne-2011-2018/) |

### Fluids and capacities

| System | Spec | Part | Capacity | Notes | Confidence |
|---|---|---|---|---|---|
| Engine oil (4.8 NA V8) | Porsche A40 approval. SAE 0W-40 for all temperatures; 5W-40 or 5W-50 above -25 °C. AU examples: Mobil 1 Triple Action 0W-40; Castrol EDGE 0W-40 A3/B4 (its product page lists Porsche A40). | - | 9.0 L | 9.0 L with a filter change (8.5 L without) per the owner's manual; a 2013 GTS owner confirms '9.5 qts' (about 9.0 L). eCarGuides says 10 US qt (9.46 L). There is no dipstick: read the level in the cluster (Vehicle > Oil level). Fill about 8.5 L, run it warm, then top up in 0.25 L steps; one display segment is about 0.25 L. The min-max span is about 1.0 L per the manual, or about 1.4 L per eCarGuides. Buy 10 L. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=244), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/994177-engine-oil-capacity-on-2013-gts.html), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-engine-oil-filter-on-a-porsche-cayenne-v8-958/), [supercheapauto.com.au](https://www.supercheapauto.com.au/p/castrol-castrol-edge-engine-oil---0w-40-a3-b4-5-litres/299202.html)) | verified |
| Automatic transmission (Aisin 8-speed Tiptronic S) | Porsche ATF 958 300 540 00, the same fluid as VW G 055 540 A2 (the dealer confirmed the bottle is labelled G055 540 A2). FCP now lists Genuine Porsche 000 043 306 24 against that number, which is probably a supersession. Owners also use Febi 29934, Ravenol J1D2122 and Fuchs Titan 4400 as equivalents; these are owner-reported, not Porsche-approved. | 958 300 540 00 (G 055 540 A2) | 13.45 L | 13.45 L is the total factory fill (owner's manual, Cayenne S). A service changes far less: about 6 L from the drain plug and pan without opening the cooler lines (Rennlist); 7.4-9.0 L for a drain and filter change (eEuroparts); eCarGuides buys 10 L. Fill through the drain plug with adapter VAS 6262/2 (M10x1). Porsche procedure WM 370235: if the cooler lines were opened, warm the ATF to 100 °C to open the thermostat, then let it cool to about 35 °C. Engine at idle, A/C off, shift slowly P-R-N-D three times. The level is correct when ATF drips continuously from the overflow tube. eEuroparts gives a 35-45 °C window and eCarGuides 35-40 °C. Read ATF temperature with the scan tool; an IR gun reads about 6 °C off (Rennlist). ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1018243-changing-atf-fluid.html), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1124498-transmission-fluid-atf-flush.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/931896-cayenne-s-958-atf-fluid-change.html), [eeuroparts.com](https://eeuroparts.com/blog/porsche-cayenne-958-tiptronic-atf-replacement-guide), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-the-automatic-transmission-fluid-on-a-porsche-cayenne-958/)) | conflicting |
| Transfer case (PTM multi-plate) | Porsche transfer case fluid 000 043 305 63, sold as an 850 ml bottle. eCarGuides uses Motul ATF VI and some owners use Ravenol; those are substitutes, not the Porsche specification. | 000 043 305 63 | 0.875 L | 0.875 L per the owner's manual; eCarGuides and Rennlist say about 0.78 L. The car must be level. Remove the FILL plug first, drain, then fill until it overflows. Two new plugs 955 301 115 01, which come with thread sealant. Buy 2 bottles: one 850 ml bottle is marginal for 0.875 L. The Diesel/Hybrid Torsen case uses a different fluid. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [fcpeuro.com](https://www.fcpeuro.com/products/porsche-transfer-case-fluid-genuine-porsche-00004330563), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-transfer-case-oil-on-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1011623-transfer-case-fluid-change.html)) | verified |
| Front differential | 75W-90 gear oil. Owners say non-locking diffs take any synthetic 75W-90; eCarGuides uses Motul Gear 300 75W-90. Porsche's own front-diff part number was not confirmed. | - | 0.5 L | 0.5 L (owner's manual and eCarGuides). The level should sit 7 mm (±2) below the lower edge of the fill hole. The fill plug is hard to reach: use a stubby 8 mm hex and a low-profile ratchet. Two new plugs 955 332 057 00. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-front-differential-oil-on-a-porsche-cayenne-2011-2018/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1011457-differential-fluid-service-front-and-rear.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1066349-same-fluid-for-both-front-and-rear-differential.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1267928-psa-change-your-diff-fluid.html)) | verified |
| Rear differential (open / standard) | 75W-90 gear oil (Motul Gear 300 75W-90 per eCarGuides). | - | 1.0 L | 1.0 L (owner's manual and eCarGuides). The level should sit 6 mm (±2) below the fill hole. Two new plugs 955 332 057 00. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-rear-differential-oil-on-a-porsche-cayenne-2011-2018/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1267928-psa-change-your-diff-fluid.html)) | verified |
| Rear differential (locking / PTV Plus, if fitted) | Porsche limited-slip 75W-90 with friction modifier. Part number conflict: Rennlist gives the latest number as 000 043 300 37, while FCP lists Genuine Porsche 000 043 305 03 '75W90 ... With Limited Slip Differential' for the same search. eCarGuides uses Motul Gear 300 LS 75W-90. | 000 043 300 37 or 000 043 305 03 (conflicting) | 1.3 L | 1.3 L (owner's manual and eCarGuides). If you just fill to overflow it takes only about 0.5 L. With the wheels off the ground, alternately spin them and add oil. One owner got 1.4 L in this way. Check the option list for PTV Plus (I1Y1 per Rennlist). ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-rear-differential-oil-on-a-porsche-cayenne-2011-2018/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1011457-differential-fluid-service-front-and-rear.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1066349-same-fluid-for-both-front-and-rear-differential.html), [fcpeuro.com](https://www.fcpeuro.com/products/porsche-gear-oil-genuine-porsche-00004330503)) | conflicting |
| Engine coolant | Porsche antifreeze only (owner's manual). eEuroparts identifies it as the pink Si-OAT type (G12++, VW TL 774-G) for 2010+ Porsches; owners cite Zerex G40 as equivalent. Owners link to 000 043 301 05 and 000 043 305 75 (1 US gal). | 000 043 301 05 or 000 043 305 75 (owner-cited, unverified) | 19.5 L | 18.0-21.0 L depending on equipment (owner's manual, Cayenne S/Turbo); 19.5 is the midpoint. Mix 50/50 with distilled water for protection to -35 °C. Porsche: 'Cooling systems with thermal management ... must be vacuum-filled'. Use an Airlift/Schwaben-type vacuum filler; if bleeding manually, run the heater/defroster. An owner drain-and-refill used about 2 US gal of concentrate (about 7.6 L) plus water, because the block doesn't drain fully. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=247), [eeuroparts.com](https://eeuroparts.com/blog/porsche-coolant-guide-everything-you-need-to-know), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1240759-coolant-flush.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1178773-what-coolant-do-you-use.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1297867-do-you-replace-coolant-in-cayenne-or-any-other-porsche.html)) | single source |
| Brake fluid | Original Porsche brake fluid (owner's manual), a DOT 4 type. eCarGuides uses ATE Typ 200 DOT 4. FCP maps 000 043 203 66 to Pentosin Super DOT 4 (single source). | - | 1.02 L | 1.02 L per the owner's manual; eCarGuides says 0.95 L. For a flush, buy 2 L (eCarGuides bleeds about 1.6 L). Order: rear passenger-side, rear driver-side, front passenger-side, front driver-side. Each calliper has inner and outer bleeders (11 mm). ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-flush-brake-fluid-on-a-porsche-cayenne/), [fcpeuro.com](https://www.fcpeuro.com/products/super-dot-4-brake-fluide-1-2-liter-1204114-1204115)) | verified |
| Power steering (hydraulic) | Pentosin CHF 202 (green). The steering is hydraulic, driven by a tandem pump shared with PDCC. | - | 1.85 L | 1.85 L per the 2011 958 owner's manual. The reservoir (955 314 015 30) has a built-in filter; check the level with the dipstick in the cap. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-pdcc-reservoir-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1126467-replacing-the-power-steering-and-pdcc-reservoirs.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1269983-power-steering-fluid-change-pictures.html)) | verified |
| PDCC hydraulics (only if PDCC fitted) | Pentosin CHF 202 | - | - | Uses the same reservoir part (955 314 015 30) as the power steering; replace it every 90,000 km / 6 years. Capacity not found. ([ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-pdcc-reservoir-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1126467-replacing-the-power-steering-and-pdcc-reservoirs.html)) | single source |
| Washer fluid | Porsche washer additive, or a compatible screen wash | - | 7.5 L | 4.5 L, or 7.5 L with headlight washers (the GTS has bi-xenon headlights with washers). One owner reports that mixing the Porsche additive with some generic washer fluids forms a gel. ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315)) | single source |
| A/C refrigerant | R134a (a 2013 Cayenne Diesel owner refers to R134a) | - | - | Charge quantity not found. Read the label under the bonnet before regassing. ([rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1205691-my-ac-is-not-freezing-cold.html)) | unverified |
| Fuel | 98 RON recommended; 95 RON minimum | - | 85 L | 85 L tank (100 L optional) with about 15 L reserve (owner's manual, S). ([manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=315)) | single source |

### Torque specs

| Fastener | Nm | Notes |
|---|---|---|
| Wheel bolts | 160 | 118 ft-lb, 19 mm socket. Clean the bolts and don't grease them; tighten in a criss-cross pattern with the car on the ground. |
| Engine oil drain plug (8 mm hex) | 50 | 37 ft-lb, with a new 18x24 mm sealing washer. |
| Oil filter housing cap (36 mm) | 25 | 19 ft-lb. Oil the new O-ring. |
| Spark plugs | 30 | 22 ft-lb. Cold engine only: the head is aluminium. Start each plug by hand. |
| Ignition coil hold-down bolts (aluminium, E-Torx) | - | Porsche lists them as one-time use. Owners tighten finger-tight; one owner snapped a bolt at the shop-manual torque. The factory value wasn't found. |
| Engine torque strut bolts (passenger side) | 20 | AllData via Rennlist: 20 Nm (15 ft-lb) as the initial tightening, then +90° on new one-time bolts (two threads agree). eCarGuides instead says 46 ft-lb (62 Nm) with threadlocker. The Nm field holds the initial torque only; use new bolts WHT 004 595, WHT 005 204 and WHT 004 635 x2 (Rennlist parts list) and add the angle. |
| Transfer case drain and fill plugs | 17 | 13 ft-lb (AllData, quoted on Rennlist; eCarGuides also says 13 ft-lb). The Rennlist write-up said 20 Nm and its author cracked the case, and at least 5 cracked cases have been reported. Use new plugs and a 1/4-inch torque wrench or a short Allen key; stop when snug. |
| Differential drain and fill plugs (front and rear) | 35 | 26 ft-lb (35 Nm). |
| ATF drain/inspection plug | 16 | ±1 Nm, with a new seal (Porsche WM 370235 quoted on Rennlist, and the Rennlist parts table). eCarGuides says 15 ft-lb (20 Nm). |
| ATF level (overflow) tube, plastic | 2 | 1.5 ft-lb. It breaks easily. |
| ATF filter bolts | 10 | 7.5 ft-lb, criss-cross. |
| ATF pan bolts | 8 | 6 ft-lb, criss-cross. Overtightening makes the gasket leak. |
| Front calliper mounting bolts | 141 | 104 ft-lb. Single-use per Porsche; medium threadlocker (eCarGuides). eCarGuides says the video's 180 ft-lb is wrong. |
| Rear calliper mounting bolts | 85 | 63 ft-lb. |
| Brake disc set screw (T50) | 14 | 10.5 ft-lb, with anti-seize, or just snug. |
| Brake bleed nipples (11 mm) | 10 | 7.5 ft-lb, or snug by hand. |
| Front seat bolts (battery access, triple-square) | 50 | 37 ft-lb, with medium threadlocker. |

### Tyres

| Position | Size | Pressure | Notes |
|---|---|---|---|
| Front (20-inch standard: RS Spyder Design, 9.5J x 20) | 275/45 R20 110Y XL (summer) | 2.6 bar / 37 psi part load; 2.6 bar full load; comfort 2.4 bar (up to 160 km/h) | Size and rim are from the MY14 Porsche brochure GTS column. Pressures are from the 2011 958 manual (Cayenne S, 275/45 R20); check the GTS's B-pillar placard. |
| Rear (20-inch standard) | 275/45 R20 110Y XL (summer) | 2.9 bar / 42 psi part load; 3.2 bar / 46 psi full load; comfort 2.7 bar | The GTS runs the same size front and rear on 20s. Set the load state in the TPM menu (part or full load). |
| Front and rear (20-inch winter/all-season) | 275/45 R20 110V XL (M+S) | Part load 2.4 bar F / 2.7 bar R; full load 2.6 bar F / 3.2 bar R | The manual treats V as the minimum speed rating for winter/all-season tyres. |
| Front (21-inch option) | 295/35 R21 107Y XL (summer) | 2.6 bar / 37 psi part and full load; comfort 2.4 bar | Per the 2011 manual for the Cayenne/Cayenne S; the Turbo's full-load front pressure is 2.7 bar. The 21-inch rim width wasn't found. |
| Rear (21-inch option) | 295/35 R21 107Y XL (summer) | 2.9 bar / 42 psi part load; 3.2 bar / 46 psi full load; comfort 2.7 bar |  |
| Collapsible spare (if fitted) | 195/75-18 106P or 195/65-19 106P | 3.5 bar / 51 psi |  |
| All | N-rated (Porsche-approved) tyres | - | The manual says pressures apply only to Porsche-approved tyre makes and types, and that the load index and speed rating are minimums. N-spec (N0, N1, ...) is a Porsche-tuned construction and compound, not a higher load or speed rating (Rennlist). Owners report N-spec Michelin Latitude and Pirelli P Zero on Cayennes. AU prices for 275/45 R20 on 20/09/2026 (Tyroola, N-rating not stated): Michelin Pilot Sport 5 XL AU$500 each, Pirelli Scorpion Zero Asimmetrico AU$495 each. A later 958.2 manual gives lower part-load pressures (34/42 psi), so the car's own placard is authoritative. |

### Jobs you can do at home

| Job | Rating | Time | Needs | Notes |
|---|---|---|---|---|
| Oil and filter | Easy | - | About 9.5 L Porsche A40 oil (e.g. Mobil 1 0W-40); filter 948 107 222 00 / Mahle OX254D4; filter-cap socket; belly pans off | NA V8 filter housing is under the engine, in front of and above the drain plug (on the Turbo it is on top). 958-107-222-10 is the V6 filter, not the V8. No dipstick - level is read in the instrument cluster. |
| Spark plugs (8) | Easy | 1.5-2.5 h | Bosch FGR5NQE04 x8; 5/8 in magnetic plug socket; torque wrench (22 ft-lb); triple-square and Torx sets | Remove side engine panels, passenger-side engine torque strut, coil covers and driver-side intake cover. Coil bolts are aluminium (one-time use, owners often reuse). |
| Ignition coils | Easy | - | Coils 948 602 104 13 | Same access as the spark plugs. |
| Air filters | Easy | - |  | Rating is a judgement: the airbox lids come off during the plug job. Dealer price AU$212-327 for comparison. |
| Coolant change and bleed | With care | - | Vacuum coolant refill tool makes it far easier | No easy radiator drain on the 958. Owners either vacuum-fill ('no bleeding necessary') or open the vent-line ring, squeeze hoses and drive with the vent open. Replacing the Y-shaped vent line under the intake manifold is a much bigger job ('What a job!'). |
| 8-speed Tiptronic fluid (ATF) and filter | Special tool | 3 h | Scan tool to read ATF temperature (or IR thermometer workaround); fill adapter VAS 6262/2; fluid pump; car level on stands; about 10 L ATF | Level is set at 35-45 C fluid temperature. Drain and filter change uses 7.4-9.0 L. eCarGuides suggests every 8 years / 80,000 miles. |
| Transfer case fluid | Easy | - | About 0.78 L (PTM multi-plate) - fluid 000 043 305 63 for petrol S/GTS; Diesel/Hybrid Torsen case takes 958 341 536 00 (0.50 L) | Easy access but torque-critical: one owner cracked the housing mixing up 15 ft-lb and 20 Nm. Transfer case trouble is a known 958 issue on all but the diesels; fresh fluid often cures early symptoms. |
| Front and rear differential fluid | With care | - | 8 mm stubby hex, low-profile ratchet, fluid pump, torque wrench (35 Nm plugs) | Front fill plug is tight to reach. With PTV Plus (locking rear diff) the car must be off the ground so the wheels can be spun while filling in stages (about 1.3-1.4 L). No scan tool needed. |
| Front brakes (958.1 GTS 360 mm) | With care | - | Torque wrench to 104 ft-lb; new caliper bolts (one-time use) | The 958.1 GTS runs 360 mm front discs with red calipers (390 mm is the Turbo and the 2016-on GTS) - measure the disc or check the VIN before ordering. Rotors are heavy. |
| Rear brakes and parking brake | With care | - | Scan tool only for EPB service mode / calibration when rotors or shoes are changed | The 958 parking brake is a drum-in-hat shoe inside the rear rotor. Owners change rear pads without a scanner. Rotor or shoe jobs sometimes need service mode and calibration; shoes can also be adjusted through the rotor hole. Rear caliper bolts 63 ft-lb. |
| Air suspension struts (if fitted) | With care | - | Ball-joint puller; scan tool for ride-height calibration afterwards | Front: stabiliser link, air line, upper control arm ball joint, three top nuts, lower bolt. Rear: access from the cargo floor. Owners warn against aftermarket-tool ride-height calibrations - consider leaving calibration to a specialist. Check whether the car has air suspension at all. |
| Driveshaft centre bearing | With care | - | 10 mm triple-square bits; JXB carrier, Meyle kit or pressed-in bearing | Symptom is a bearing 'singing' that eases when warm. Porsche's fix is a whole driveshaft. Rusted exhaust bolts are the hard part. |
| Transfer case replacement | Specialist | 3.8 h (labour guide) |  | One owner calls it 'fairly easy to remove/replace'; the unit's weight is the main problem on jack stands. |
| Lifting an air-suspension car | Easy | - | Jack mode / levelling disabled before jacking | On the 955/957, hold the height switch forward 5-10 s until 'Regulation Switched Off'. The exact 958 sequence was not verified - use the owner's manual. |

## 958 Cayenne GTS part numbers

| Part | Porsche number | Aftermarket | Qty | AU price | Where / notes |
|---|---|---|---|---|---|
| Oil filter (cartridge, O-ring included) | 948 107 222 00 | Mahle OX 254 D4 / OX 254 D4 ECO; Mahle OX 254 D5; Hengst E113H D235 | 1 | AU$55 (Mahle OX 254 D4, Das Nine, 20/09/2026); US$17.63 (FCP) | Das Nine; FCP Euro The filter sits under the engine, ahead of the sump; remove the cap with a 36 mm socket. The V6 filter 958 107 222 10 does NOT fit. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-engine-oil-filter-911-cayenne-panamera-94810722200), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-engine-oil-filter-on-a-porsche-cayenne-v8-958/), [dasnine.com.au](https://dasnine.com.au/products/oil-filter-oc254-d4) |
| Oil drain plug (8 mm hex, M18x1.5) | 900 219 020 31 (eCarGuides); FCP supplies PAF 008 309 A for it | - | 1 | US$16.63 (FCP) | FCP Euro; Porsche parts desk Reuse it if it's in good condition. [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-engine-oil-filter-on-a-porsche-cayenne-v8-958/) |
| Oil drain plug sealing washer (18x24 mm) | 900 123 106 30 | - | 1 | US$2.31 (FCP) | FCP Euro; Porsche parts desk Fit a new washer at every change. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-engine-oil-drain-plug-gasket-por-90012310630) |
| Engine air filter | 958 110 130 00 | Mahle LX 2024; Mahle LX 2024/1 (high capacity, dusty conditions); BMC FB335/01 (performance) | 2 | US$17.39 each (Mahle, FCP); no AU price found | FCP Euro; Porsche parts desk Two airboxes on top of the engine, T-Torx. On the driver's-side intake cover, the pins turn in opposite directions; turning them the wrong way breaks them. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-air-filter-mahle-95811013000), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-engine-air-filters-on-a-porsche-cayenne-958-s-gts-turbo-turbo-s/) |
| Cabin (pollen) filter | 958 572 219 00 | Mann CUK 2847/1 (activated carbon); Mahle LAK 855; Hengst E2980LC; Corteco 80001741 | 1 | Wesfil WACF0169 AU$51.99 at Supercheap (20/09/2026; 958 fitment not verified) | Supercheap; FCP Euro [fcpeuro.com](https://www.fcpeuro.com/products/porsche-cabin-air-filter-corteco-95857221900), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-cabin-air-filter-on-porsche-cayenne-958/) |
| Spark plugs | Bosch FGR5NQE04 (the OE plug) | Bosch FGR5NQE04 | 8 | AU$12.90 each at Spark Plugs Direct; AU$14.49 each at Supercheap (both 20/09/2026) | Spark Plugs Direct; Supercheap; Repco; Burson Gap 1.0 mm, 16 mm hex, M14x1.25 (per Supercheap's spec table; the plugs come pre-gapped). Change them with the engine cold. [supercheapauto.com.au](https://www.supercheapauto.com.au/p/bosch-spark-plug/SPO2010184.html), [sparkplugsdirect.com.au](https://www.sparkplugsdirect.com.au/collections/bosch-spark-plugs), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-spark-plugs-ignition-coils-a-porsche-cayenne-s-gts-958/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1310885-diy-video-spark-plugs-and-ignition-coils-v8-r-and-r.html) |
| Ignition coil | 948 602 104 14 (supersedes 948 602 104 13) | Beru ZSE042 (0 040 102 042); Bremi kit 94860210414KT; SWAN (AU brand) listed on eBay AU | 8 | SWAN AU$78.99 each / AU$573.99 for eight (eBay AU, earlier research, not re-checked); Beru US$48.49; genuine US$108.99 (FCP) | eBay AU; FCP Euro The connector tabs go brittle. The aluminium coil hold-down bolts are one-time use. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-ignition-coil-beru-94860210413), [fcpeuro.com](https://www.fcpeuro.com/products/porsche-direct-ignition-coil-cayenne-panamera-por-94860210413), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1310885-diy-video-spark-plugs-and-ignition-coils-v8-r-and-r.html), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-spark-plugs-ignition-coils-a-porsche-cayenne-s-gts-958/) |
| Engine torque strut (passenger side; removed for the plugs) | 7PP 199 331 A | Hamburg-Technic 7PP199331A | 1 | - | Inspect it for cracks while it's off. [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-spark-plugs-ignition-coils-a-porsche-cayenne-s-gts-958/) |
| Drive belt (serpentine) | 7PP 903 137 | Continental 7DPK2880; Gates DK071135; Dayco 6071134 | 1 | US$90.99-121.99 (FCP) | FCP Euro The number comes from a 958 Turbo owner's parts list. NA GTS fitment isn't confirmed, so check by VIN. [rennlist.com](https://rennlist.com/forums/diy-cayenne/1139483-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html), [fcpeuro.com](https://www.fcpeuro.com/products/porsche-serpentine-belt-gates-dk071135) |
| Belt tensioner | 948 102 261 21 | INA 533 0132 10 | 1 | INA US$28.59 vs genuine US$281.99 (FCP) | FCP Euro Tensioner pulley 948 102 403 23; idlers 948 102 118 21 (right) and 7PP 145 276 (left). The pulley and idler numbers are single-source (Rennlist, Turbo). [fcpeuro.com](https://www.fcpeuro.com/products/porsche-belt-tensioner-cayenne-panamera-por-94810226121), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1139483-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html) |
| Water pump | 948 106 033 01 | Meyle HD 413 220 0001/HD; Geba kit 94810603301KT3 | 1 | Meyle US$245.99; genuine US$539.99 (FCP) | FCP Euro Seeps at the pulley and down the timing cover. Comes with a gasket. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-water-pump-meyle-hd-94810603301), [eeuroparts.com](https://eeuroparts.com/blog/porsche-cayenne-958-cooling-system-issues-explained), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1139483-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html) |
| Water pump pulley (aluminium, replaces the composite one) | 948 106 091 01 | URO 94810609101 | 1 | URO US$45.59 (FCP) | FCP Euro The composite pulley has disintegrated on some cars. The V6 pulley is different. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-engine-water-pump-pulley-uro-parts-94810609101), [eeuroparts.com](https://eeuroparts.com/blog/porsche-cayenne-958-cooling-system-issues-explained) |
| Thermostat | 948 106 034 01 > 034 03 > 034 04 (supersession chain, inferred) | Wahler 4104.48.107D | 1 | Wahler US$148.81; genuine US$364.99 (FCP) | FCP Euro eEuroparts lists 948 106 034 01 and Rennlist 948 106 034 03 (with O-rings). The connector points up (12 o'clock). [fcpeuro.com](https://www.fcpeuro.com/products/porsche-engine-coolant-thermostat-wahler-410448107d), [eeuroparts.com](https://eeuroparts.com/blog/porsche-cayenne-958-cooling-system-issues-explained), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1139483-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html) |
| Thermostat housing, revised with threaded pipes | 948 106 080 02 (replaces 948 106 080 00) | Bapmic BF0426550009 | 1 | Genuine US$701.00 (FCP) | FCP Euro; Porsche parts desk Fixes the glued coolant pipe that can let go (2011-14 V8). The job needs the intake off. O-rings: 948 106 124 02 (x2) and 999 707 477 40 (x2). Cylinder head vent tube: 948 106 026 22. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-engine-coolant-thermostat-housing-panamera-cayenne-por-94810608002), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1045931-2011-2014-v8-serious-issue-coolant-pipe-glue.html), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1139483-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html) |
| Transfer case drain/fill plugs | 955 301 115 01 | S-Tec SP01992 | 2 | Genuine US$20.23 each; S-Tec US$2.49 (FCP) | FCP Euro; Porsche parts desk Fit new plugs: they carry pre-applied thread sealant. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-transfer-case-plug-genuine-porsche-95530111501), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-transfer-case-oil-on-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1011623-transfer-case-fluid-change.html) |
| Differential drain/fill plugs (M16x1.5) | 955 332 057 00 | - | 4 | US$19.68 each (FCP) | FCP Euro; Porsche parts desk All four plugs on the front and rear diffs are this same part. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-differential-plug-genuine-porsche-95533205700), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-front-differential-oil-on-a-porsche-cayenne-2011-2018/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1011457-differential-fluid-service-front-and-rear.html) |
| ATF filter (with O-ring 958 325 443 00) | 958 325 435 00 (= VW 0C8 325 435) | Febi 108181; Hengst EG943H D480; Vaico V10-2284 (eCarGuides) | 1 | US$73.85 genuine (Sonnen, per Rennlist) | FCP Euro; Porsche parts desk Held by four 10 mm bolts. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-auto-trans-filter-cayenne-panamera-por-95832543500), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-the-automatic-transmission-fluid-on-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1018243-changing-atf-fluid.html) |
| ATF pan gasket | 958 321 371 00 | Elring 821.440; Vaico V10-2285 | 1 | - | FCP Euro [fcpeuro.com](https://www.fcpeuro.com/products/porsche-auto-trans-oil-pan-gasket-cayenne-panamera-por-95832137100), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-the-automatic-transmission-fluid-on-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1018243-changing-atf-fluid.html) |
| ATF drain/inspection plug seal | 958 321 581 00 (eCarGuides, Rennlist flush thread) vs 955 321 581 00 (Rennlist parts table) | - | 1 | - | Porsche parts desk Level (overflow) tube 958 301 437 10 is plastic: tighten to 2 Nm only. [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-the-automatic-transmission-fluid-on-a-porsche-cayenne-958/), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1018243-changing-atf-fluid.html), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1124498-transmission-fluid-atf-flush.html) |
| Power steering / PDCC reservoir (has a built-in filter) | 955 314 015 30 | - | 1 | US$149.99 (FCP) | FCP Euro; Porsche parts desk The PDCC reservoir only matters if PDCC is fitted. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-power-steering-reservoir-cayenne-por-95531401530), [rennlist.com](https://rennlist.com/forums/diy-cayenne/1126467-replacing-the-power-steering-and-pdcc-reservoirs.html), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-replace-pdcc-reservoir-a-porsche-cayenne-958/) |
| Front brake pads (360 mm standard GTS) | 958 351 939 00 | Textar 2500701; Pagid 355042971; Brembo P65021 | 1 | Textar US$154.47 (FCP). Das Nine sells Textar 92A front pads at AU$440, but lists them for the Diesel (350 mm), so check fitment | FCP Euro; Das Nine; Porsche parts desk Standard 958.1 GTS brakes are 360x36 mm front / 330 mm rear with red six-piston callipers (Porsche MY14 brochure, eCarGuides, Stuttcars, and two Rennlist threads: 'Red calipers on a GTS - 360mm'). eEuroparts says 390 mm like the Turbo. Measure the disc, or give the VIN to a parts desk, before ordering. If the car has 390 mm discs, the pads are 958 351 939 10. A 2014 GTS owner got clacking with aftermarket pads and it stopped with genuine ones. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-vw-disc-brake-pad-set-cayenne-panamera-pagid-95835193900), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1331470-14-gts-all-new-brakes-new-noises.html) |
| Front brake discs (360x36 mm) | 958 351 403 01 (L) / 958 351 404 01 (R) | Zimmermann 600.3247.20 (L) / 600.3248.20 (R); SHW VFL37831 / VFR37832; Sebro 205869C / 205868C; Bosch QuietCast 53011416 / 53011415 | 2 | Zimmermann US$147.99 each (FCP). No local 360 mm stock price found | FCP Euro; Porsche parts desk Standard 958.1 GTS brakes are 360x36 mm front / 330 mm rear with red six-piston callipers (Porsche MY14 brochure, eCarGuides, Stuttcars, and two Rennlist threads: 'Red calipers on a GTS - 360mm'). eEuroparts says 390 mm like the Turbo. Measure the disc, or give the VIN to a parts desk, before ordering. 390 mm alternative: 958 351 403 50 / 404 50 (Zimmermann Formula Z 460.4528.75 / 460.4529.75, US$306.99 each). [fcpeuro.com](https://www.fcpeuro.com/products/porsche-brake-disc-zimmermann-95835140301), [fcpeuro.com](https://www.fcpeuro.com/products/porsche-brake-disc-zimmermann-95835140401), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/), [manua.ls](https://www.manua.ls/porsche/cayenne-2014/manual), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1049241-confused-about-front-rotor-size-350mm-or-360mm-or-390mm.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1508111-2012-s-brake-rotors-350-or-360mm.html), [eeuroparts.com](https://eeuroparts.com/blog/how-to-service-porsche-cayenne-958-brakes) |
| Rear brake pads (330 mm) | 958 352 939 00 | Textar 2472101; Pagid 355042911; TRW GDB1875; Bosch QuietCast BP1453; Brembo P65027N | 1 | Genuine (PAA698451A) US$214.99; Pagid US$100.99 (FCP). Das Nine Textar 92A rear pads AU$330 (listed for the Diesel) | FCP Euro; Das Nine eCarGuides' 390 mm (Turbo) guide lists 958 352 939 81 for the 358 mm rear. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-disc-brake-pad-rear-cayenne-por-95835293900), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/), [dasnine.com.au](https://dasnine.com.au/products/porsche-cayenne-rear-brake-pads-textar) |
| Rear brake discs (330 mm) | 955 352 401 31 | Zimmermann 600.3229.20; SHW VRX37816; Sebro 205854C; Bosch QuietCast 42011151 | 2 | Zimmermann US$85.99 each (FCP) | FCP Euro FCP's GTS kit reads '360mm and 330mm'. The Turbo-size 358 mm rear disc is 958 352 401 50 (Zimmermann 600.3239.20). The parking brake is a drum inside the rear disc hat. [fcpeuro.com](https://www.fcpeuro.com/products/audi-porsche-volkswagen-disc-brake-rotor-rear-q7-cayenne-touareg-7l6615601d), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/), [stuttcars.com](https://www.stuttcars.com/porsche-cayenne-gts-2013-2014/) |
| Brake pad wear sensors | 958 612 365 00 (front) / 958 612 365 50 (rear) | Pagid 355251921 (front) / 355251931 (rear); Holstein 2BWS0223 / 2BWS0224; PEX WK721 (rear) | 4 | - | FCP Euro eCarGuides lists 2 front and 2 rear. Sensors that haven't tripped can be reused. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-brake-pad-sensor-sebro-95861236500), [fcpeuro.com](https://www.fcpeuro.com/products/porsche-brake-pad-sensor-sebro-95861236550), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/) |
| Brake pad hardware | 970 351 959 01 (front, x2 kits) / 7PP 615 269 (rear) | Pagid 355206181 (rear) | 3 | - | Porsche parts desk; FCP Euro [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/) |
| Calliper mounting bolts | not found | - | 8 | - | Porsche parts desk Porsche says they are single-use (per eCarGuides). [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-change-brake-pads-rotors-on-porsche-cayenne-360mm-front-rotor/) |
| Parking brake shoes (drum-in-hat) | no 958 Porsche number found | Febi 28730 (listed for Cayenne/Q7/Touareg); VW 7L0 698 525 | 1 | Febi US$62.99 (FCP) | FCP Euro Not verified for the 958. Use the scan tool's EPB service mode, or back the adjuster off through the disc hole, if a lipped disc won't come off. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-parking-brake-shoe-kit-febi-28730) |
| Front wiper blades (650 mm / 26 in pair) | 958 628 939 01 (from the FCP kit name) | Bosch 3 397 009 034 (Aerotwin set) | 1 | US$30.08 (FCP). Bosch Aerotwin 650 mm BBA650 AU$49.99 each at Supercheap (generic; arm-adapter fit not verified) | FCP Euro; Supercheap [fcpeuro.com](https://www.fcpeuro.com/products/porsche-volkswagen-vw-windshield-wiper-blade-set-touareg-cayenne-3397009034), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-inspect-replace-windshield-wipers-on-a-porsche-cayenne-2011-2018/) |
| Rear wiper blade | not found | Bosch A332H | 1 | US$9.09 (FCP) | FCP Euro Size conflict: FCP says 12 in, eCarGuides says 13 in. [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-inspect-replace-windshield-wipers-on-a-porsche-cayenne-2011-2018/) |
| 12 V battery | not found (the OEM battery is a Varta AGM per owners) | Exide Edge AGM FP-AGML5/49 (eCarGuides pick); Generic AGM H8 / group 49 / L5 size | 1 | No AU price found for an H8 AGM | Auto parts stores; battery specialists AGM, H8/group 49 size (Rennlist). The owner's manual (US, LHD) puts it in a box under the LEFT front seat; the location on an RHD car wasn't verified. The seat comes out (four triple-square bolts; refit at 50 Nm with threadlocker). There is a vent tube: keep it on the vented end. Registration: owners report the dealer charges about US$25 but the car charges normally without it. Whether the Foxwell NT530 can register the battery isn't verified. The Ah rating wasn't found. [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=292), [ecarguides.com](https://ecarguides.com/maintenance-guides/how-to-test-replace-battery-on-porsche-cayenne-v8-958/), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/921846-958-battery-questions.html) |
| Remote key battery | not found | Coin cell CR2032 | 1 | - | Any battery or hardware store A key-fob DIY video linked from Rennlist says a 2032 cell for 2011-2018 Cayennes. The manual only says to lever off the back cover and check polarity. Check the old cell before buying. [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=296), [youtube.com](https://www.youtube.com/watch?v=FiBFkzpiQhw), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1446326-replacing-key-fob-battery.html) |
| Bulbs | partly found | - |  | - | The 958 manual lists H7 for halogen low/high beam and auxiliary lamps, and H11 for one position. The GTS has bi-xenon headlights with PDLS, LED daytime running lights and tinted LED tail-lights as standard (brochure), so few bulbs are serviceable. Xenon, number-plate, interior and fog bulb types were not found. [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=298), [manualslib.com](https://www.manualslib.com/manual/2911568/Porsche-Cayenne-2011.html?page=300), [manua.ls](https://www.manua.ls/porsche/cayenne-2014/manual) |
| Air suspension compressor (reference) | Porsche number not found | WABCO 415 403 302 0 | 1 | US$964.79 (FCP, 2026); eEuroparts listed it at US$458.95 in 2023 | FCP Euro Behind the right-side running-board inner cover. Its relay is under the steering column. [fcpeuro.com](https://www.fcpeuro.com/products/audi-porsche-vw-suspension-air-compressor-wabco-4154033020), [eeuroparts.com](https://eeuroparts.com/blog/porsche-cayenne-958-air-suspension-in-depth-repair-guide) |
| Air struts (reference) | not found | Bilstein 45-240263 (front passenger); Bilstein 45-240287 (rear passenger); Arnott AS-3235 (front right) |  | Bilstein front US$1,320, rear US$1,257 (eEuroparts); Arnott US$1,135.15 (FCP); used OEM front right AU$479 (VDL Adelaide, sold out) | eEuroparts; FCP Euro; VDL Adelaide (used) Owners recommend genuine Porsche over Arnott for longevity. Venting a strut needs a capable scan tool. [eeuroparts.com](https://eeuroparts.com/blog/porsche-cayenne-958-air-suspension-in-depth-repair-guide) |
| Driveshaft centre support bearing | Porsche supplies only the complete shaft (over US$3,200) | Meyle 414 151 0110/S; JXB centre support carrier (takes a 6007-2RS bearing) | 1 | Meyle US$317.99 (FCP); JXB US$299.99-329.99 | FCP Euro; JXB Performance Needs 10 mm triple-square bits; the corroded exhaust bolts are the hard part. [fcpeuro.com](https://www.fcpeuro.com/products/porsche-drive-shaft-center-support-meyle-4141510110s), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1494119-cayenne-958-jxb-driveshaft-center-support-bearing-replacement-notes.html) |
| Transfer case (reference) | 958 341 010 08 (reported discontinued, Dec 2024) | - | 1 | New US$3,975.44; reman US$2,300-2,600; US dealers quote US$3,500-6,000 fitted | Porsche; remanufacturers Labour guide 3.8 h. Later cases get a high-mounted vent kit. [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1416917-transfer-case-replacement-cost-in-2024-a.html), [rennlist.com](https://rennlist.com/forums/cayenne-958-2011-2018/1035471-transfer-case-what-actually-fails.html) |

### Diagnostic and coding tools

- **Launch X431 (V+, PROS Mini, Diagun IV, CRP919X BT / Pros Elite)** - The recommended owner-level coding tool for the 958. Rules: charger on (above 12.4V), never 'Online Coding' or 'Restore Default Setting', screenshot values before changing. Treat air-suspension functions as expert-only. Does: Offline coding of all the owner-level changes above (confirmed on 958s in the Rennlist coding thread); Battery coding (Gateway); Service resets, fault reading and clearing, bi-directional tests; Custom TPMS preset in the instrument cluster; Works on other car makes too. Can't: Key and fob programming (online coding needs a Porsche dealer account); Factory tow-module retrofit on a 2013 GTS (needed PIWIS or the dealer); Some modules (one owner needed PIWIS for a BCM function). Price: Australian price not verified. A Rennlist owner put coding-capable tools at USD 900-1,100..
- **Foxwell NT530 (Porsche)** - Fine for servicing, but it can't do any of the coding changes. Its ride-height calibration is risky: a 2016 GTS owner had the front about 50 mm higher than the rear before sorting it out (needs battery above 12.1V, ignition on, engine off). Software updates need a Windows PC. Does: Service interval resets; Reading and clearing fault codes; Height sensor calibration (Level control/PASM > Special functions). Can't: Control module coding or programming. Per Foxwell's own product page, as quoted by an owner: 'doesn't support control module coding and programming'; Key programming.
- **iCarsoft POR V2 / V3** - A diagnostic and reset tool only. Warning: an iCarSoft 3.0 user poking at air-suspension diagnostics was left with a permanent 'Chassis System Failure' and dead ride-height/PASM buttons. The likely cause was the level-control module being left in diagnostic mode. Keep it away from air-suspension functions on the GTS. Does: Service resets; Battery registration; Code reading and diagnostics. Can't: Coding (confirmed for POR V2.0 in the Rennlist coding thread).
- **PIWIS II/III clone** - Not recommended as a first tool. Buggy, often in German, and risky. Leave dealer-level jobs to a dealer or a specialist with a genuine PIWIS. Does: Dealer-level functions, including key programming if you have the codes; Consistency-checked multi-ECU coding. Can't: Guarantee: it's counterfeit software, and stories exist of misconfigured clones bricking engine and transmission control units; Some hidden items the Launch reaches weren't visible on one PIWIS2 v14. Price: About USD 450 for PIWIS II clones (May 2020); decent clones with an interface 'USD 1000 or more'. The real PIWIS is leased to dealers for about USD 20k a year..
- **Autel MaxiSys** - Capable but pricier. The Launch has far more 958-specific coding reports. Does: Coded mirror auto-fold on a 2011 Cayenne Turbo; Coded comfort windows on a 2019 911 (MS908). Can't: Broad 958 coding not confirmed in the sources.

### Where to buy parts

- [Porsche Centre parts departments](https://dealer.porsche.com/au/sydneysouth/en-AU/Parts) (AU): Genuine parts; Sydney South is a large parts supplier; Porsche Doncaster runs an online shop
- [Das Nine](https://dasnine.com.au/) (AU): Porsche parts; free AU shipping over $150
- [DParts](https://www.dparts.com.au/) (AU): New, used and performance Porsche parts
- [Superspares](https://www.superspares.com.au/part-finder/porsche/cayenne/) (AU): Genuine, OEM and aftermarket parts; active eBay store
- [VDL Adelaide](https://vdladelaide.au/products/92a3_356624) (AU): Used 958 parts from a Euro dismantler (struts, transfer cases); 30-day returns
- ASV Euro (AU): Used parts
- [Supercheap Auto / Repco / Spark Plugs Direct](https://www.ozbargain.com.au/node/974336) (AU): Oil (Mobil 1 0W-40 A40) and Bosch spark plugs
- [SWAN coils via eBay AU](https://www.ebay.com.au/sch/i.html?_nkw=94860210413) (AU): 4.8 V8 ignition coils, AU$78.99 each
- [FCP Euro](https://www.fcpeuro.com/Porsche-parts/Cayenne/) (overseas): Brake kits, filters, Arnott struts; often cheapest landed from the US; shipping calculated live, duties paid on delivery
- [Pelican Parts](https://www.pelicanparts.com/cat/r_958c) (overseas): Odd parts; arrived within a week for one AU owner
- [ECS Tuning](https://www.ecstuning.com/) (overseas): Aftermarket and OEM parts
- [Design911](https://www.design911.com/) (overseas): Porsche parts from UK/NL; ships to 140 countries
- [Teile.com](https://au.teile.com/) (overseas): Genuine Porsche parts from Germany; AU shipping from EUR 60
- [JXB Performance](https://www.jxbperformance.com/products/p/7p-touareg-958-cayenne-driveshaft-center-support-bearing-carrier-upgrade) (overseas): 958 driveshaft centre bearing carrier, US$299.99

## 958 Cayenne mods and upgrades, with Queensland legality

### Hidden features (no tool needed)

Built-in tricks most owners never find: a hidden cluster menu, key-fob window and mirror controls, memory buttons that store climate and start-up volume, and a programmable tailgate height. Free and good for a first session together.

- Area: Tech. Effort: Easy. Cost: $0 AUD. Time: 30 min.
- Free.
- Gotcha: Hidden cluster menu: scroll to the vehicle title in the right-hand display and press the stalk button.
- Gotcha: Hold the fob unlock or lock button to move all the windows (seen on a UK car; may vary by market).
- Gotcha: Press lock twice and hold, on the fob or door handle, to fold the mirrors.
- Gotcha: Memory buttons also save the start-up volume. Set it low before saving.
- Gotcha: Tailgate height: stop it where you want, then hold the tailgate button to program it.
- Gotcha: B-pillar button disables the interior motion sensor (useful for a dog in a locked car).
- Gotcha: The rear wiper wipes automatically when you select reverse after using the front wipers.
- Sources: [Driven By Satch: 958 hidden features](https://www.youtube.com/watch?v=sCLubUUY2Us), [Carrera Cafe: hidden features in the 958](https://www.youtube.com/watch?v=F4eGbEoO6NA), [Serhan's Garage: Cayenne secrets](https://www.youtube.com/watch?v=oYCQmCgiIw8), [Serhan's Garage: top 5 hidden features](https://www.youtube.com/watch?v=muham--XMxM)

### Sport exhaust valves always open

Pull the vacuum hoses off the two factory sport exhaust flaps at the tailpipes so the valves stay open. It's the best-value sound upgrade: free, fully reversible and using factory hardware.

- Area: Sound and performance. Effort: Easy. QLD: check. Cost: $0 AUD. Time: Minutes.
- Free.
- Legality: The exhaust stays factory, but the stationary noise limit (certified level + 5 dB(A)) still applies. The GTS's certified figure wasn't found, so a stationary test at an inspection station would settle it.
- Gotcha: On MY13 the valves open only with the Sport button; MY14 has a separate exhaust button.
- Gotcha: Tie up the hose and tape the actuator port so nothing gets in.
- Gotcha: A 2013 GTS owner reports no warning lights.
- Gotcha: The cabin sound barely changes; most of the difference is outside the car.
- Gotcha: A dedicated exhaust button can't be added to a MY13: the switch panel is one coded unit.
- Sources: [Rennlist: 2013 vs 2014 Cayenne GTS PSE button](https://rennlist.com/forums/cayenne-958-2011-2018/1105320-2013-vs-2014-cayenne-gts-pse-button.html), [Rennlist: Is sport exhaust an option on GTS?](https://rennlist.com/forums/cayenne-958-2011-2018/965411-is-sport-exhaust-an-option-on-gts.html), [Rennlist: GTS sport exhaust valve always open](https://rennlist.com/forums/cayenne-958-2011-2018/1026256-cayenne-gts-958-2-sport-exhaust-valve-always-open.html), [VSB 14 Section LT (Test Procedures)](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP12_Section_LT_Test_Procedures_V2_0_1Jan2011_v3.pdf)

### Leather clean and bolster dye repair

Driver's outer bolster and steering wheel lose their colour coat and go shiny with age. Cleaning and a colour-matched dye kit fix most of it; badly torn seats need a new cover.

- Area: Interior. Effort: Weekend. Cost: $30–$125 AUD.
- Gyeon leather cleaner $26.99-28.99; Leatherique system $74.99 (250 mL) or $124.99 (500 mL). New OEM 18-way seat cover was about US$930 in 2022.
- Gotcha: On ventilated or perforated seats, mist cleaner onto the cloth, never the seat - liquid in the holes swells the leather.
- Gotcha: One owner's Chemical Guys leather wipes marked Bordeaux red leather.
- Gotcha: Clean leather looks matte, not shiny.
- Sources: [Rennlist: 2014 GTS wheel dye repair](https://rennlist.com/forums/cayenne-958-2011-2018/1315311-steering-wheel-repair.html), [Rennlist: bolster repair and seat cover price](https://rennlist.com/forums/cayenne-958-2011-2018/1300969-leather-repair.html), [Rennlist: leather care on vented seats](https://rennlist.com/forums/cayenne-958-2011-2018/1077095-best-way-to-keep-leather-looking-new.html), [Rennlist: wipes damaged leather](https://rennlist.com/forums/cayenne-958-2011-2018/1478612-chemical-guys-leather-wipes-is-a-no-no.html), [Rennlist: Leatherique results](https://rennlist.com/forums/cayenne-958-2011-2018/1277849-color-matching-leather-or-replace.html)

### Headlight lens restore and film

958 headlight lenses fog and their UV coat can flake after years outdoors. Polish them clear, then protect with clear film so Brisbane UV doesn't undo the work.

- Area: Exterior. Effort: Easy. Cost: $34–$118 AUD.
- Maxshine kit $33.95, 3D GLW kit $39.85, Optimum Opti-Lens coating $118 (Detailing Shed). Pre-cut Lamin-X film listed for 2011-2014 Cayenne.
- Gotcha: Inside-lamp condensation is a separate fix: vent and hairdryer.
- Gotcha: Haze on the inner projector lens needs the lamp split - skip that.
- Sources: [Rennlist: headlight UV coating flaking](https://rennlist.com/forums/cayenne-958-2011-2018/1179757-headlight-clear-coat-issue.html), [Detailing Shed headlight kits](https://detailingshed.com.au/products/maxshine-headlight-restoration-kit)

### Alcantara clean and protect

The GTS has Alcantara seat centres, armrest, door inserts, headliner and pillars (and the wheel rim if optioned); it goes flat and matted with use. Clean it properly before paying for a retrim - owners find it is often matted, not worn through.

- Area: Interior. Effort: Easy. Cost: $70–$125 AUD. Time: Protectant needs 24-48 hours to cure before it gets wet.
- Product cost. Bowden's Own Fabra Cadabra $22.99, Plush Brush $32.99, Fabratection $46.99; Sonax Alcantara cleaner $29.99; Mint rubber brush $8.99.
- Gotcha: Never spray cleaner straight onto the fabric - spray the pad or brush.
- Gotcha: Avoid solvent-based and generic fabric cleaners.
- Gotcha: Reapply protectant about every six months on high-wear areas.
- Sources: [Bowden's Own: cleaning Alcantara and microsuede](https://www.bowdensown.com.au/guides/cleaning-alcantara-microsuede-interior-trim), [Rennlist: worn Alcantara wheel on a GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1278846-need-steering-wheel-repair-recommendation.html), [Rennlist: Alcantara wheel wear](https://rennlist.com/forums/cayenne-958-2011-2018/1035079-alcantara-steering-wheel-thoughts.html), [Porsche 2013 Cayenne GTS press text](https://www.netcarshow.com/porsche/2013-cayenne_gts/)

### DIY one-step polish and sealant

A dual-action polisher, one-step polish and a spray sealant or DIY coating removes swirls and makes the car far easier to wash. Best-value paint work for a car this age.

- Area: Exterior. Effort: Weekend. Cost: $300–$400 AUD.
- Approximate total of listed items: Mint DAS6 V2 polisher $159.99, Menzerna 3-step sampler $79.99, pads $8.99-13.99, sealant or coating $28.99-129.99.
- Gotcha: Decontaminate (iron remover and clay) before polishing.
- Gotcha: Work in shade - Brisbane sun dries product onto paint.
- Sources: [Rennlist: correct before coating](https://rennlist.com/forums/cayenne-958-2011-2018/1224120-ceramic-coating-worth-it.html), [carcareproducts.com.au (polisher, polish, coatings)](https://www.carcareproducts.com.au/)

### Wireless CarPlay / Android Auto (keep the PCM)

Adds wireless CarPlay and Android Auto to the factory PCM 3.1 screen. Best buy is a fibre-optic (MOST) interface such as the Mr12Volt P3000: it keeps digital Bose/Burmester sound, the factory mic, steering-wheel controls and the reversing camera. Avoid full screen replacements.

- Area: Tech. Effort: Weekend. Cost: $800–$1,500 AUD. Time: 1.5-3 h (experienced) to 5 h; one owner took 10 h fixing ribbon seating.
- Mr12Volt P3000-PM31 is USD 549 (about AUD 800-850 at an assumed 1.5 rate, plus shipping and GST). Euro Car Upgrades (Buderim QLD) kit AUD 990. Installed: AUD 1,430 (Autofidelity VIC), AUD 1,249.95-1,499.95 (Car Stereo Shop WA). Cheaper ISUDAR board ~USD 300; AliExpress boards ~USD 100-160.
- Gotcha: Check the centre armrest for AUX/USB first. Some 958s (including one owner's MY14 GTS) have none. AUX-based kits then have no audio path; the MOST-type Mr12Volt still works.
- Gotcha: Buy a current Mr12Volt P3000. The old blue P1000 box doesn't support the factory mic (grey P2000 does and can be upgraded).
- Gotcha: Ribbon-cable clamps are fragile on 10-year-old PCMs and must be fully seated. Test in the car before reassembling.
- Gotcha: An ISUDAR board burnt a chip on one 2014 958's PCM main board (single report).
- Gotcha: If a factory TV tuner is fitted, Mr12Volt needs it bypassed with an optical loop.
- Gotcha: Unresolved: whether FM radio can play while CarPlay navigation is on screen (Mr12Volt uses the TV source). Ask the seller.
- Gotcha: Run the echo-cancellation calibration and update firmware (an iPhone 17 disconnect bug was patched).
- Gotcha: Worth cloning the PCM hard drive to an SSD while the unit is out.
- Sources: [Rennlist: Best CarPlay retrofit for PCM 3.1](https://rennlist.com/forums/cayenne-958-2011-2018/1457756-best-carplay-retrofit-in-2025-for-pcm-3-1-a.html), [Mr12Volt P3000-PM31 product page](https://www.mr12volt.com/products/p3000-pm31), [Euro Car Upgrades PCM3.1 kit (Buderim QLD)](https://eurocarupgrades.com.au/porsche-pcm3-1-wireless-carplay-android-auto-retrofit-kit.html), [Autofidelity supplied and installed](https://autofidelity.com.au/product/porsche-pcm3-1-wireless-apple-carplay-android-auto/), [Rennlist: no USB or AUX outlets (2014)](https://rennlist.com/forums/cayenne-958-2011-2018/1448356-2014-cayenne-no-usb-or-aux-outlets.html), [Rennlist: Mr12Volt mic issue / box versions](https://rennlist.com/forums/cayenne-958-2011-2018/1503557-mr12volt-carplay-need-to-add-external-mic-how-to-install-in-steering-column.html), [Rennlist: PCM chip fried by CarPlay board](https://rennlist.com/forums/cayenne-958-2011-2018/1481535-cayenne-958-pcm-3-1-chip-fried-due-to-carplay-board-please-help-to-name-chip.html), [Rennlist: Mr12Volt install, PCM won't power on](https://rennlist.com/forums/cayenne-958-2011-2018/1468062-installed-mr12volt-carplay-unit-now-pcm-wonit-power-on.html), [Dean Holden: full screen replacement regrets](https://www.youtube.com/watch?v=nczPCU5IPOQ), [MrSteeleDrives: Mr12Volt 958 install](https://www.youtube.com/watch?v=v3zUtGP2ePY)

### Cooling system teardown

Check whether the thermostat housing pipes are glued or threaded. If they're glued, fit the threaded housing and do the vent Y-pipe, water pump, thermostat and rear crossover fitting in one teardown. MY13-14 cars may already have the threaded pipes, so inspect before buying parts.

- Area: Reliability. Effort: Specialist. QLD: fine. Cost: $1,000–$1,500 AUD. Time: About 6 hours for the housing alone (AllData labour time).
- Parts about A$1,000-1,500. A dealer charged US$1,800 (≈A$2,500) for the housing fix alone in 2018. Engine-out quotes for the rear crossover reached US$8-10k.
- Gotcha: Wiggle the pipes where they enter the thermostat housing. Any movement means plan the replacement.
- Gotcha: The intake manifold and fuel rail must come off. Replace the single-use aluminium bolts and the intake manifold gaskets.
- Gotcha: The plastic cylinder-head vent Y-pipe cracks with age and leaks into the engine V. Replace it while you're in there.
- Gotcha: The glued rear crossover fitting can be pinned in place (drill, tap, Loctite 271, stainless cap screw) with the engine in, if you remove the high-pressure fuel pump.
- Gotcha: Removing the three-piece false firewall gives about 8 inches more room.
- Gotcha: Replace the O-ring on the expansion tank's bottom hose while the system is drained.
- Gotcha: Owners recommend a vacuum fill tool to avoid airlocks.
- Gotcha: Do the oil separator gaskets and any carbon cleaning in the same teardown.
- Part: Threaded thermostat housing 948 106 080 02 (replaces 948 106 080 00)
- Part: Thermostat 948 106 034 01 / 948 106 034 03
- Part: Water pump 948 106 033 01
- Part: Cylinder-head vent Y-pipe 948 106 026 22
- Part: Pipe O-rings 999 707 477 40
- Part: Aluminium water pump pulley (URO) 948 106 091 01
- Part: Oil separator gaskets 948 107 437 20 and 948 107 438 20
- Part: Rear crossover 948 106 061 20/21 (fitment confusion reported)
- Part: Expansion tank bottom hose 958 106 261 01
- Sources: [Rennlist: 2011-2014 V8 serious issue: coolant pipe glue](https://rennlist.com/forums/cayenne-958-2011-2018/1045931-2011-2014-v8-serious-issue-coolant-pipe-glue.html), [Rennlist: 958 DIY: water pump, t-stat, rear crossover, cyl head vent](https://rennlist.com/forums/cayenne-958-2011-2018/1137870-958-cayenne-diy-leaks-water-pump-t-stat-rear-crossover-cyl-head-vent.html), [Rennlist: 2012 Turbo coolant leak and fix (not what you think)](https://rennlist.com/forums/cayenne-958-2011-2018/1126867-2012-cayenne-turbo-coolant-leak-and-fix-not-what-you-think.html), [Rennlist: CTT engine drop: updated water manifold](https://rennlist.com/forums/cayenne-958-2011-2018/1149895-ctt-engine-drop-updated-water-manifold-discontinued.html), [Rennlist: Engine out coolant leak $10k](https://rennlist.com/forums/cayenne-958-2011-2018/1502427-engine-out-coolant-leak-10k.html)

### Replace TPMS sensors

Original tyre-pressure sensors last about 11-12 years, so a MY13-14 car is likely due. Owners recommend Huf sensors, and the car relearns them through the instrument cluster menu with no tool.

- Area: Tech. Effort: Easy. Time: Tyre-shop fit, then a short relearn drive.
- Not priced. Easiest to have fitted at the next tyre change.
- Gotcha: Porsche changed TPMS systems partway through MY2014. Have a dealer confirm the right sensor from the VIN.
- Gotcha: Avoid cheap knock-off sensors.
- Gotcha: Don't carry the old wheels in the car during the relearn; the car sees 8 sensors and won't learn.
- Gotcha: Don't confirm 'tyre change' settings until the system reads the new sensors.
- Sources: [Rennlist: aftermarket TPMS sensor battery life](https://rennlist.com/forums/cayenne-958-2011-2018/1487988-aftermarket-tpms-sensors-battery-life.html), [Rennlist: TPMS won't go into learning mode](https://rennlist.com/forums/cayenne-958-2011-2018/1302128-new-tires-tpms-won-t-go-into-learning-mode.html), [Rennlist: Schwaben TPMS OK?](https://rennlist.com/forums/cayenne-958-2011-2018/1472081-schwaben-tpms-ok.html)

### Coding: convenience features

Scan-tool coding changes: one-touch indicator 3 to 5 flashes, windows up/down from the key fob, mirrors auto-fold on lock, auto-lock speed, teardrop wipe, and tailgate beep off. Each is a single value change and can be changed back.

- Area: Tech. Effort: Easy. Time: 30-60 min.
- Needs a coding-capable scan tool such as a Launch X431 (see tools).
- Gotcha: Put a battery charger on first; keep above 12.4V while writing to modules.
- Gotcha: Never use 'Online Coding' or 'Restore Default Setting'. One owner zeroed his parking-brake module that way.
- Gotcha: Screenshot every original value first; 'Back Up All Coding' doesn't work on the Launch.
- Gotcha: Many changes only show after you switch off, lock the car and wait 30 seconds.
- Gotcha: Mirror auto-fold needs power-folding mirrors already fitted. Once coded, 'Mirror retract' appears in the PCM car options.
- Gotcha: Indicator flashes may already be adjustable in the cluster settings menu. Check first.
- Gotcha: Tailgate beep: set FFB, ST, FIT and HKIT to inactive in the Rear lid module, for both open and close.
- Sources: [Rennlist coding guide](https://rennlist.com/forums/cayenne-958-2011-2018/1160705-cayenne-coding-the-ultimate-guide-and-discussion.html), [Rennlist: 958 auto folding mirrors](https://rennlist.com/forums/cayenne-958-2011-2018/1244127-958-auto-folding-mirrors.html), [Rennlist: auto-folding mirrors (Launch/Autel)](https://rennlist.com/forums/cayenne-958-2011-2018/1005811-auto-folding-mirrors.html)

### Transfer case fluid change

Drain and refill the PL72 transfer case with the correct fluid and keep doing it. It's the cheapest protection against the 958's most common expensive failure, and owners often report symptoms clearing after one to three changes.

- Area: Reliability. Effort: Weekend. QLD: fine. Cost: $150 AUD.
- Under about A$150 for fluid and new plugs. If it fails: dealer replacement US$5,000-5,500 in 2024 (≈A$7,000-7,700); AWD.tech remanufactured unit €1,650-1,890 (≈A$2,650-3,050).
- Gotcha: Torque the drain and fill plugs to 20 Nm (15 ft-lb). An owner cracked the case by using a 1/2" wrench set to 20 ft-lb, so use a 3/8" or 1/4" wrench.
- Gotcha: Remove the fill plug first, so you're never left with an empty case you can't refill.
- Gotcha: It's fill-to-overflow: about 0.78-0.85 L, with the car level.
- Gotcha: Use new drain and fill plugs; they come with thread sealant.
- Gotcha: Never use generic gear oil. One shop's Motul 75W-80 caused immediate shudder.
- Gotcha: Diagnosis: unplug the transfer case stepper-motor connector and drive gently. If the lurch goes away, the problem is the transfer case.
- Gotcha: Interval from owners: every 15,000-30,000 km, or every second oil change.
- Gotcha: Keep the same tyre size and wear on all four corners; replace all four together.
- Gotcha: Turn on air-suspension jack mode before lifting: hold the level switch forward for about 10 seconds until the lights blink.
- Part: Porsche transfer case fluid 000 043 305 63
- Part: TF-0870 / DTF-1 equivalents: Ravenol (J1C1125 cited by owners), Triax DTF-1, Rock Oil Gearaxl TF 0870
- Part: Updated transfer case vent 958 301 047 11 (bulletin MC-10120786-9999)
- Part: AWD.tech GNC clutch kit for PL72 ATC (€230)
- Sources: [Rennlist: How to change your 958 transfer case fluid](https://rennlist.com/forums/cayenne-958-2011-2018/1012212-958-cayenne-transfer-case-fluid-change.html), [Rennlist: Transfer case fluid fill amount](https://rennlist.com/forums/cayenne-958-2011-2018/1424549-transfer-case-fluid-fill-amount.html), [Rennlist: TC fluid change / Triax DTF-1](https://rennlist.com/forums/cayenne-958-2011-2018/1493490-tc-fluid-change-triax-dtf-1-a.html), [Rennlist: Shop used wrong transfer case fluid](https://rennlist.com/forums/cayenne-958-2011-2018/1518131-shop-used-wrong-transfer-case-fluid.html), [Rennlist: If you're thinking of buying a 958, read this first](https://rennlist.com/forums/cayenne-958-2011-2018/986048-if-you-re-thinking-of-buying-a-958-read-this-first.html), [AWD.tech PL72 ATC parts](https://awd.tech/collections/pl72atc-porsche-cayenne)

### Leather dash lifting re-glue (if fitted)

The leather dash is optional on the GTS; where fitted it commonly shrinks and lifts behind the instruments and near the passenger A-pillar, worse in sun. Hydrate it, inject leather glue and weight it down early - once it has shrunk back it cannot be stretched.

- Area: Interior. Effort: Weekend. Time: About a week of daily conditioning, then 12-24 hours weighted after gluing.
- Not priced in AUD: leather glue, syringes and conditioner. Full re-cover quoted around US$3,000 by one owner.
- Gotcha: Check first whether this car has the optional leather dash.
- Gotcha: Act at the bubble stage; shrinkage is permanent.
- Gotcha: Needle holes need massaging closed afterwards.
- Sources: [Rennlist: dash leather re-glue method](https://rennlist.com/forums/cayenne-958-2011-2018/1520258-dash-leather.html), [Rennlist: leather dashboard shrinkage](https://rennlist.com/forums/cayenne-958-2011-2018/1490272-leather-dashboard-shrinkage.html), [Rennlist: leather dash optional on GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1097308-does-the-2013-4-gts-have-a-leather-dash.html), [Rennlist: GTS dash lifting](https://rennlist.com/forums/cayenne-958-2011-2018/1364654-leather-gts-dash-liftingo-anyone-know-what-to-do.html)

### Door sill scuff protectors

Vinyl sill protectors stop shoes scuffing the painted door sills. Cheap and quick.

- Area: Interior. Effort: Easy. Time: About 30 minutes.
- About US$8 for a set.
- Gotcha: Warm the vinyl in the sun first so it is pliable.
- Sources: [Rennlist: 2013 GTS sill stickers](https://rennlist.com/forums/cayenne-958-2011-2018/1111163-diy-door-sill-scuff-protection-stickers.html)

### Headlight seal replacement

The rubber seal around each headlight turns gooey and crumbles - widely reported. Headlights come out tool-free with the Porsche key tool, and new seals take well under an hour.

- Area: Exterior. Effort: Easy. Time: About 30-45 minutes (Viton DIY).
- 958.1: original-style seals from AliExpress about US$45 a pair, or Viton cord about US$80. 958.2 OEM parts 958-631-119-00 / -120-00 about US$78 each.
- Gotcha: Make sure the headlight clamp is seated correctly before refitting the lamp.
- Gotcha: Old seals can leave black goo - clean the channel.
- Sources: [Rennlist: Viton seal DIY](https://rennlist.com/forums/cayenne-958-2011-2018/1066543-diy-headlight-gaskets-replacements-for-958-1-a.html), [Rennlist: AliExpress original seals](https://rennlist.com/forums/cayenne-958-2011-2018/1276773-found-a-source-for-cayenne-958-1-headlight-gaskets.html), [Rennlist: 958.2 part numbers](https://rennlist.com/forums/cayenne-958-2011-2018/1207309-headlight-surround-gaskets-are-falling-apart.html)

### Brake pads and rotors (360 mm GTS set)

The MY13-14 GTS has 360 mm front and 330 mm rear discs, not 390 mm. Fresh rotors and a low-dust ceramic pad are the sensible upgrade.

- Area: Suspension, wheels, brakes. Effort: Weekend. QLD: fine. Cost: $60–$1,800 AUD.
- Aftermarket pads from about US$40-45 per axle (≈A$60). A full front and rear job in parts was US$800-1,300 (≈A$1,100-1,800).
- Legality: Like-for-like or manufacturer-optional brakes are fine. A Turbo 390 mm conversion wasn't a GTS option, so it needs an Approved Person. Don't machine rotors below their limit.
- Gotcha: Measure the disc or do a VIN parts lookup before ordering; some sellers list 390 mm for the GTS.
- Gotcha: Caliper bolts are torque-to-yield, so replace them. One owner quotes 140 Nm; verify in the manual.
- Gotcha: No grease on the pad backs or shims (Porsche rule); do grease the clips and pins.
- Gotcha: Light-braking squeal is common; clean and bed in properly.
- Gotcha: Bleed order: FL, FR, RR, RL, outer bleeder then inner, with a pressure bleeder at about 2 bar.
- Part: Front rotors 958 351 403 01 / 958 351 404 01 (Zimmermann 600.3247.20 / 600.3248.20)
- Part: Front pads 958 351 939 00 (Textar 2500701 / Pagid 355042971)
- Part: Rear rotor 330 mm 955 352 401 31 (Zimmermann 600.3229.20)
- Part: Rear pads 958 352 939 00
- Part: Low-dust option: PowerStop Z16 front 16-1577, rear 16-1453
- Sources: [Rennlist: 958 S / Turbo brakes: pics and experience](https://rennlist.com/forums/cayenne-958-2011-2018/1410778-958-cayenne-s-turbo-brakes-post-your-pics-and-experience.html), [Rennlist: Front rotor size 350/360/390](https://rennlist.com/forums/cayenne-958-2011-2018/1049241-confused-about-front-rotor-size-350mm-or-360mm-or-390mm.html), [Rennlist: DIY brake bleeding 958 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1515115-diy-brake-bleeding-958-cayenne-gts.html), [Rennlist: GTS front pads](https://rennlist.com/forums/cayenne-958-2011-2018/1404990-gts-front-pads.html), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0)

### Wheel face coating

A DIY ceramic wheel coating makes brake dust rinse off far more easily. Best done with the wheels off after a deep clean.

- Area: Exterior. Effort: Weekend. Cost: $80 AUD.
- Gyeon Q2 Rim EVO 30 mL (carcareproducts.com.au).
- Gotcha: Keep strong acid wheel cleaners well out of reach.
- Sources: [carcareproducts.com.au Gyeon Q2 Rim](https://www.carcareproducts.com.au/products/gyeon-q2-rim-30ml)

### Wheel kerb-rash repair

Mobile repairers cover Brisbane for kerbed wheels; full refinishing is a shop job. Kerbed wheels are an easy negotiating point for buyers, so fix them before sale.

- Area: Exterior. Effort: Specialist. Cost: $99 AUD. Time: About 45 minutes per repair (Mag Repair).
- Mag Repair (mobile, Brisbane/Gold Coast) from $99 + GST per repair. US full refinish references: US$850-880 for four 21" painted; US$225 per wheel powder coat.
- Gotcha: Dealer-refinished wheels have peeled; ask about prep and warranty.
- Gotcha: Powder coating forged wheels needs controlled cure temperatures.
- Sources: [Mag Repair](https://www.magrepair.com.au), [Rennlist: refinishing cost](https://rennlist.com/forums/cayenne-958-2011-2018/1411971-wheels-refinishing-cost.html), [Rennlist: powder coating](https://rennlist.com/forums/cayenne-958-2011-2018/1049367-powdercoating-wheels.html), [Rennlist: refinished rims peeling](https://rennlist.com/forums/cayenne-958-2011-2018/1091583-clear-coat-cracking-on-all-rims-2013-cayenne-turbo.html)

### Oil separator (AOS / PCV)

The V8's air-oil separator membrane tears with age, causing warning lights and oil use. Replace the unit or membrane on condition, or while the intake is off. A catch can is largely redundant on this engine.

- Area: Reliability. Effort: Weekend. QLD: fine. Cost: $100–$430 AUD.
- Genuine AOS A$430 (Australian owner). An aftermarket membrane is about A$100 delivered, but one split after a year.
- Legality: If a catch can is fitted, it must stay in the closed crankcase loop, never venting to atmosphere.
- Gotcha: High crankcase vacuum at the oil cap is normal on these engines.
- Gotcha: Owners report Porsche treats up to 1 L per 1,000 km of oil use as acceptable.
- Gotcha: Membrane size is 87.5-88 mm, and there are different parts for different V8s, so order the right one.
- Gotcha: If you fit a catch can anyway, it goes inline in the hose from the oil-mist separator to the intake plenum.
- Sources: [Rennlist: 958.1 CS 4.8 V8 air oil separator](https://rennlist.com/forums/cayenne-958-2011-2018/1337491-958-1-cs-4-8-v8-air-oil-separator-aos.html), [Rennlist: 958 DIY: AOS membrane R&R](https://rennlist.com/forums/cayenne-958-2011-2018/1236286-958-cayenne-diy-aos-membrane-r-and-r.html), [Rennlist: Adding an oil catch can](https://rennlist.com/forums/cayenne-958-2011-2018/1167822-need-advice-for-location-of-adding-oil-catch-can.html), [VSB 14 Section LA (Engines)](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP3_Section_LA_Engine_01jan2011_v3.pdf)

### Driveshaft centre bearing

The driveshaft carrier bearing commonly starts to whine from under the rear-seat floor. Porsche sells only the complete shaft, but a VW carrier kit or a JXB clamshell carrier fixes it far more cheaply. Most owners wait for the noise rather than replacing it early.

- Area: Reliability. Effort: Weekend. QLD: fine. Cost: $420–$4,500 AUD.
- JXB carrier US$299.99 (≈A$420). A Timken 6007-2RS bearing is about US$15. The OEM complete shaft is over US$3,200 (≈A$4,500+).
- Gotcha: Test: push a grease needle through the bearing seal. If the noise stops, it's the bearing.
- Gotcha: The exhaust centre section and heat shields must come off. Support the shaft with straps or a helper.
- Gotcha: Turn on air-suspension jack mode before lifting.
- Gotcha: Centre bearing to body torque: 20 Nm + 90°.
- Gotcha: One owner's old bearing failed inside the JXB carrier; a new Timken 6007-2RS fixed it.
- Part: Carrier bearing kit (VW) 7P6 598 575
- Part: O-rings WHT 005 156
- Part: Snap rings 958 349 493 00 (VW 7P0 521 202)
- Part: Meyle kit 414 151 0100/S
- Part: OEM shaft 958 521 102 xx (Audi/VW 7P0 521 102 x)
- Part: Timken 6007-2RS bearing
- Sources: [Rennlist: [DIY] Replace centre driveshaft carrier bearing](https://rennlist.com/forums/cayenne-958-2011-2018/1502845-diy-replace-cayenne-center-driveshaft-carrier-bearing.html), [Rennlist: JXB driveshaft centre support replacement notes](https://rennlist.com/forums/cayenne-958-2011-2018/1494119-cayenne-958-jxb-driveshaft-center-support-bearing-replacement-notes.html), [Soul Performance: JXB carrier upgrade](https://soulpp.com/product/porsche-958-cayenne-jxb-performance-driveshaft-center-support-bearing-carrier-upgrade/)

### Front + rear dash cam, hardwired

A two-channel dash cam powered from the dash-end fuse panel so the wires are hidden. Straightforward on the 958, but on this era of car the dash cam cable can knock out the PCM's GPS.

- Area: Tech. Effort: Weekend. Cost: $449–$869 AUD. Time: 1-3 h.
- Camera only (Dash Cams Australia: FineVu GX35 2CH AUD 449 to BlackVue Elite 10 2CH AUD 869). Add a hardwire kit; parking-mode battery packs are AUD 389-399.
- Gotcha: GPS antenna sits behind the rear-view mirror. A mirror-mount dash cam's power cable dropped a 2013 GTS's nav to 0 satellites. Fix: shield the cable (foil or shielding tape) and route it away from the antenna. Check the satellite count afterwards (Map > Info > Location info).
- Gotcha: Keep the cable behind the A-pillar airbag. On the 958 there are no screws behind the 'airbag' logo; prying it has damaged pillars.
- Gotcha: The right-side fuse panel has empty ACC and constant-12V slots for add-a-fuse taps.
- Gotcha: Some PCM/accessory circuits stay live 20-30 min after locking. Test which feed you're on (ACC, delayed, constant).
- Gotcha: The rain-sensor feed at the mirror is always live, not switched.
- Gotcha: Don't remove the vent above the fuse cover; it's bolted internally.
- Gotcha: Rear cable: use the left tailgate conduit (the right one carries the washer hose).
- Gotcha: Fit the supplied ferrite filter or DAB reception can suffer.
- Sources: [Rennlist: FitcamX GPS interference, 2013 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/1400016-fitcamx-dash-cam-interference-with-2013-cayenne-gts-gps-problem-solved.html), [Rennlist: 2-ch dash cam install tips with pics](https://rennlist.com/forums/cayenne-958-2011-2018/1264216-tips-on-2-ch-dashcam-install-cayenne-92a-2016-with-pics.html), [Rennlist: using the factory camera / A-pillar advice](https://rennlist.com/forums/cayenne-958-2011-2018/1317347-using-the-factory-backup-camera-for-rear-dash-cam-video.html), [CSI Car Systems: hardwiring a Cayenne without fuse taps](https://www.youtube.com/watch?v=q1ldD0PrfkA), [fiveyorks: hard-wire dash cam, 2016 Cayenne](https://www.youtube.com/watch?v=IKSiTtXMOvs), [Dash Cams Australia (prices)](https://www.dashcamsaustralia.com.au/)

### Professional correction and ceramic coating

A pro paint correction plus ceramic coating is widely reported by 958 owners as making a daily car much easier to keep clean. Brisbane starting prices are for small cars; a Cayenne and the correction it needs will cost more.

- Area: Exterior. Effort: Specialist. Cost: $849–$1,449 AUD.
- Brisbane 'from' prices for small cars: PPF Wraps & Protection Gtechniq $849 (5-yr) / $1,449 (9-yr); We Tint Windows Gyeon from $950 / $1,450. Dealer ceramic $1,200-1,500 for a small-medium SUV (Drive, 2022). Correction usually extra.
- Gotcha: Pro coatings need top-ups and sometimes annual inspections to keep the warranty.
- Gotcha: Ask whether correction is included.
- Sources: [PPF Wraps & Protection, Browns Plains](https://ppfwrapsbrisbane.com.au/), [We Tint Windows paint protection prices](https://wetintwindows.com.au/car-protection/paint-protection/), [Rennlist: ceramic worth it](https://rennlist.com/forums/cayenne-958-2011-2018/1224120-ceramic-coating-worth-it.html), [Rennlist: correction and coating](https://rennlist.com/forums/cayenne-958-2011-2018/1073856-just-had-the-cd-paint-corrected-ceramic-coated.html)

### Interior and footwell LED bulbs

Swap the cabin, footwell, door-edge, glovebox and boot bulbs for LEDs. Cheap, quick and a big visible improvement; code the footwell lights to LED so ordinary LEDs don't throw warnings.

- Area: Tech. Effort: Easy. Time: 30-60 min.
- Aftermarket bulbs about USD 50-60 for a set versus about USD 450 for Porsche's 18-bulb Extended LED package (Rennlist). AUD prices not verified.
- Gotcha: LEDs are polarity-sensitive. If one doesn't light, turn it round. Test before refitting the cover.
- Gotcha: Pry covers gently from the small cut-out or the housing breaks.
- Gotcha: Bulb quality varies. A Sydney Porsche specialist tried about four brands before settling on one.
- Gotcha: Most interior positions take the same bulb; the boot ceiling is different.
- Gotcha: Vanity-mirror and puddle lights are fiddly to remove.
- Sources: [Rennlist: DIY interior LED light package](https://rennlist.com/forums/cayenne-958-2011-2018/748844-diy-interior-led-light-package.html), [Rennlist coding guide (footwell LED coding)](https://rennlist.com/forums/cayenne-958-2011-2018/1160705-cayenne-coding-the-ultimate-guide-and-discussion.html)

### LED number plate, side marker and fog bulbs (with coding)

Fit LED number plate, side marker, fog or cornering bulbs and code each position to LED so the car stops reporting blown bulbs. Needs a coding-capable scan tool.

- Area: Tech. Effort: Easy. QLD: check. Time: 30-60 min.
- Bulbs are cheap (not priced). Needs a Launch X431-class tool (see tools).
- Legality: Not researched. Exterior lights must meet Australian lighting rules, especially white LED side markers that replace amber ones. Check before fitting.
- Gotcha: Number plate LEDs need built-in resistors, or you get a bulb-out warning.
- Gotcha: Plate-light coding (rear-end electronics) sometimes fails with 'check conditions'. One owner still saw a brief startup warning and also disabled the light-out warning in the instrument cluster.
- Gotcha: Side marker coding is in front-end electronics ('Side marker light SML in LED'). The bulb is a 194/T10.
- Gotcha: Flickering LED fogs: code 'fog light in LED'.
- Gotcha: Clear side markers with a DRL 'switchback' wire need tapping into the headlight DRL feed; wire colours differ by model.
- Sources: [Rennlist coding guide](https://rennlist.com/forums/cayenne-958-2011-2018/1160705-cayenne-coding-the-ultimate-guide-and-discussion.html), [Rennlist: issues coding LED plate lights](https://rennlist.com/forums/cayenne-958-2011-2018/1286837-issues-with-coding-for-led-license-plate-lights.html), [Rennlist: installed LED side markers](https://rennlist.com/forums/cayenne-958-2011-2018/962713-installed-led-side-marker-lights.html)

### Sharper reversing camera (OEM harness)

Swap the grainy factory reversing camera for a 720p CVBS camera using Porsche wiring harnesses. Owners report it's plug and play with no coding, and all the PCM functions stay.

- Area: Tech. Effort: Weekend.
- Not priced. Parts: harnesses 8D0973822 and 1J0973332, a 720p CVBS camera, and a Fakra-to-RCA lead.
- Gotcha: The PCM only accepts CVBS. An AHD camera needs its mode wire cut to force CVBS (see the camera manual).
- Gotcha: With a Mr12Volt, wire an extra camera's trigger to the '12v rear camera' lead, not the tail-light reverse wire. That caused a 'Left tail light defective' warning on one car.
- Gotcha: Cars with a factory TV tuner (behind the right D-pillar) can route the camera through it. A water-damaged tuner killed one car's camera, so check the sunroof drains.
- Gotcha: Parking guide lines may not appear with aftermarket cameras.
- Sources: [Rennlist: aftermarket camera with OEM PCM functionality](https://rennlist.com/forums/cayenne-958-2011-2018/1463780-aftermarket-back-up-camera-upgrade-with-oem-pcm-functionality.html), [Rennlist: tail light warning after camera install with Mr12Volt](https://rennlist.com/forums/cayenne-958-2011-2018/1474881-left-tail-light-defective-after-backup-camera-install-w-mr12volt.html), [Rennlist: TV tuner and no reversing camera](https://rennlist.com/forums/cayenne-958-2011-2018/1417836-958-1-2010-pcm-3-1-tv-tuner-and-no-back-camera-problem.html)

### Coding: battery registration and custom TPMS preset

Owner-level jobs that save a dealer visit: register a new battery (Gateway > coding) and add a custom low-pressure TPMS preset for beach or off-road driving, so the cluster doesn't nag at reduced pressures.

- Area: Tech. Effort: Weekend. Time: 30-60 min.
- Needs a coding-capable scan tool (see tools).
- Gotcha: Battery coding is under Gateway > coding, not Special Functions.
- Gotcha: The TPMS preset means renaming an existing preset, entering eight front/rear pressure values, then a cluster control-unit reset.
- Gotcha: Same safety rules as all coding: charger on, no 'Online Coding', screenshot values first.
- Sources: [Rennlist coding guide (battery coding)](https://rennlist.com/forums/cayenne-958-2011-2018/1160705-cayenne-coding-the-ultimate-guide-and-discussion.html), [958 Garage: TPMS custom setting creation](https://www.youtube.com/watch?v=UaH-ZXdsFZY)

### Spark plugs and coils

Replace the plugs on schedule with the OE Bosch plug and fit fresh OEM Beru coils and boots. There's no real coil 'upgrade', and cheap coils have failed early.

- Area: Reliability. Effort: Weekend. QLD: fine. Cost: $570 AUD. Time: About 2-4 hours.
- Plugs under A$100 for eight. OEM coils about US$42 each (≈A$59; ≈A$470 for eight). A US independent shop charged US$400 for the job.
- Gotcha: Owners cite 40,000 miles or 4 years (about 64,000 km); check the Australian service book.
- Gotcha: The aluminium coil hold-down screws are single-use and snap easily.
- Gotcha: The passenger-side torque strut bolts are aluminium and single-use: 15 ft-lb + 90° when new.
- Gotcha: Tools: triple-square drivers, external Torx, a 3/8" wobble extension (the rear passenger-side plug is tight), thin-wall deep sockets and a torque wrench.
- Gotcha: Moving the coolant hose for access to cylinder 4 can make the expansion tank's hose O-ring weep.
- Part: Bosch OE spark plugs (confirm by VIN)
- Part: Beru OEM ignition coils
- Sources: [Rennlist: DIY video: spark plugs and ignition coils V8](https://rennlist.com/forums/cayenne-958-2011-2018/1310885-diy-video-spark-plugs-and-ignition-coils-v8-r-and-r.html), [Rennlist: Changing spark plugs on 958 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/965620-changing-spark-plug-on-958-gts.html), [Rennlist: New Beru coil pack failed within 2 years](https://rennlist.com/forums/cayenne-958-2011-2018/1473829-new-beru-coil-pack-failed-within-2-years-v8-engine.html), [Rennlist: Ignition coils brands](https://rennlist.com/forums/cayenne-958-2011-2018/1130897-ignition-coils-brands.html)

### Wheel alignment to GTS spec

Have a Porsche-experienced shop align the car to the GTS specification, with values near the middle of the range. Owners say a good alignment transforms how the car drives.

- Area: Suspension, wheels, brakes. Effort: Specialist. QLD: fine.
- No Australian price found.
- Gotcha: Avoid chain-store alignments.
- Gotcha: Dealers will align at the Low suspension setting on request.
- Gotcha: Camber and caster are adjustable (eccentric bolts).
- Sources: [Rennlist: Alignment spec for 958.2 Cayenne S](https://rennlist.com/forums/cayenne-958-2011-2018/1433492-alignment-spec-for-958-2-cayenne-s.html), [Rennlist: Wheel alignment: front left camber](https://rennlist.com/forums/cayenne-958-2011-2018/1167114-wheel-alignment-front-left-camber.html)

### Wheels and tyres

Owners favour 295/40 R21 over 295/35 R21, and 20-inch wheels, for ride and pothole protection. Replace all four tyres together to protect the transfer case.

- Area: Suspension, wheels, brakes. Effort: Easy. QLD: check.
- No Australian prices found.
- Legality: Diameter may be up to 15 mm larger or 26 mm smaller than any size the manufacturer designates for the model (soft roader), or up to 50 mm larger if the car is ADR category MC; check the compliance plate. 295/40 R21 is +13.9 mm over the standard 275/45 R20. Non-factory spacers aren't permitted.
- Gotcha: Standard GTS sizes: 275/45 R20 (755.5 mm) and 295/35 R21 (739.9 mm).
- Gotcha: 285/45 R20 is 764.5 mm; 275/50 R20 is 783.0 mm, which is only OK if the car is MC category.
- Gotcha: Keep speedometer accuracy, and at least the placard load rating.
- Gotcha: Consider Porsche 'N'-rated tyres.
- Sources: [Rennlist: 295/40/21 tyres do fit our 958](https://rennlist.com/forums/cayenne-958-2011-2018/1293552-295-40-21-tires-do-fit-our-958-a.html), [Rennlist: Ride quality on 20" vs 21" wheels](https://rennlist.com/forums/cayenne-958-2011-2018/1343566-ride-quality-on-20-vs-21-wheels.html), [Rennlist: 20" Spyder wheel tyre options](https://rennlist.com/forums/cayenne-958-2011-2018/1514374-20-spyder-wheel-tyre-options.html), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0)

### Door card leather re-glue

Door-card leather and foam can come unglued and bulge; on a 2013 GTS the windows then snagged the warped panel. Remove the panel, re-glue and clamp along its length.

- Area: Interior. Effort: Weekend.
- Spray upholstery adhesive and about 10 clamps per side; not priced.
- Gotcha: Put a long, wide stick under the clamps to spread pressure and avoid marking the leather.
- Gotcha: Reported mostly in humid climates.
- Sources: [Rennlist: door panels unglued (2013 GTS fix)](https://rennlist.com/forums/cayenne-958-2011-2018/1275203-door-panels-unglued-raise-up-with-windows.html)

### Sticky console buttons

958 console buttons are hard plastic, so stickiness is almost always spilled drink from the cup holders, not a peeling coating. Contact cleaner and repeated pressing usually frees them; worst case the switch module comes out for a bench clean.

- Area: Interior. Effort: Easy.
- Contact cleaner is cheap; a replacement module was about US$200 from Suncoast and is VIN/option-specific.
- Gotcha: Car off, and let everything dry fully before powering up.
- Gotcha: One owner's contact-cleaner fix came back; a few drops of light oil held.
- Gotcha: There are about a dozen switch-module variants - order by VIN.
- Sources: [Rennlist: 958 buttons are hard plastic](https://rennlist.com/forums/cayenne-958-2011-2018/1060680-sticky-buttons.html), [Rennlist: sport button sticking](https://rennlist.com/forums/cayenne-958-2011-2018/1212072-sport-mode-button-sticking.html), [Rennlist: cleaning sticky sport button](https://rennlist.com/forums/cayenne-958-2011-2018/1155185-cleaning-sticky-sport-button.html), [Rennlist: replacing the switch module](https://rennlist.com/forums/cayenne-958-2011-2018/1476661-replacing-sticking-switch-buttons-bottom-of-center-console.html)

### Driver's window switch chrome lip

The chrome lip on the driver's window switch commonly breaks. The replacement switch is a quick DIY from the armrest.

- Area: Interior. Effort: Easy. Time: About 20 minutes.
- About US$132 for the part (order by VIN - about 10 variants).
- Gotcha: Order by VIN - switch varies with options and year.
- Sources: [Rennlist: window switch chrome lip DIY](https://rennlist.com/forums/cayenne-958-2011-2018/950505-diy-driver-side-window-switch-chrome-lip-breaking.html)

### Bonnet crest replacement

The bonnet crest commonly delaminates and peels on 958s and is not covered by CPO. Swapping it is a quick job with the original nuts and washer.

- Area: Exterior. Effort: Easy.
- New-style crest from a Porsche dealer about US$131 (Sunset); black AliExpress crest about US$18.
- Gotcha: Tailgate PORSCHE letters also peel from exhaust heat.
- Gotcha: Black tailgate lettering needs a spacing template (Etsy template about US$18.99 vs body shop US$800-1,200).
- Sources: [Rennlist: hood emblem peeling](https://rennlist.com/forums/cayenne-958-2011-2018/1190688-my-hood-emblem-is-peeling.html), [Rennlist: crest not covered by CPO](https://rennlist.com/forums/cayenne-958-2011-2018/1051122-front-porsche-crest-peeling.html), [Rennlist: new-style crest price](https://rennlist.com/forums/cayenne-958-2011-2018/1409478-turbonite-hood-crest-upgrade.html), [Rennlist: black crest fitment](https://rennlist.com/forums/cayenne-958-2011-2018/1370733-blacked-out-hood-badge.html), [Rennlist: tailgate letter template](https://rennlist.com/forums/cayenne-958-2011-2018/1409650-upgraded-the-cargo-emblems-to-black.html)

### Targeted paint protection film

At 110,000-150,000 km the front already has stone chips, so full-front PPF locks them in and costs more than it adds. Film just the high-value spots: headlights, door-handle cups and the rear loading lip.

- Area: Exterior. Effort: Specialist.
- Brisbane installers quote only. US references: full-front US$1,100-1,500; custom front quarter over US$2,000.
- Gotcha: Installer skill matters more than film brand - one owner got a bubbled bonnet.
- Gotcha: Edges and join lines show after a few years.
- Gotcha: Touch up chips before filming.
- Sources: [Rennlist: clear bra quotes](https://rennlist.com/forums/cayenne-958-2011-2018/960539-3m-clear-bra-and-opti-coat.html), [Rennlist: PPF bubbles](https://rennlist.com/forums/cayenne-958-2011-2018/1415838-ppf.html), [PPF Wraps & Protection packages](https://ppfwrapsbrisbane.com.au/)

### Legal ceramic window tint

Ceramic tint cuts heat and shields the Alcantara and leather from UV. Queensland limits as quoted by a Brisbane tinter: 35% VLT front sides, 20% behind the driver with both side mirrors, top 10% band only on the windscreen.

- Area: Exterior. Effort: Specialist. QLD: check.
- SUV prices are by quote. Brisbane sedan examples: from $375 (entry level), XPEL XR Plus ceramic $695. An Australian owner paid $490 on a small SUV.
- Legality: TMR's site could not be reached (403). Limits are from We Tint Windows citing TMR's September 2017 rules; the 35% front limit includes factory glass. Confirm with TMR or an Approved Inspection Station.
- Gotcha: Over-dark front windows cause night glare and poor visibility when looking left.
- Gotcha: Check the factory privacy glass first - film stacks on it.
- Sources: [We Tint Windows: darkest legal tint Qld](https://www.wetintwindows.com.au/darkest-legal-tint/), [We Tint Windows: tint prices](https://wetintwindows.com.au/how-much-tint-car-windows/), [Rennlist: tint experiences](https://rennlist.com/forums/cayenne-958-2011-2018/1043668-window-tint-film-50-a.html)

### Logo puddle lights and interior LEDs

Porsche-logo projector courtesy lights swap in seconds; aftermarket LED bulbs replace the interior incandescents. Cheap, reversible and fun together.

- Area: Retrofits. Effort: Easy. Time: About 10 seconds per puddle light.
- Porsche's 18-bulb LED package was about US$450 vs about US$50-60 aftermarket.
- Gotcha: Keep the original lamps.
- Gotcha: One owner had a bad experience with a bulb vendor.
- Sources: [Rennlist: puddle lights DIY](https://rennlist.com/forums/cayenne-958-2011-2018/1111172-diy-porsche-logo-puddle-lights.html), [Rennlist: interior LED package](https://rennlist.com/forums/cayenne-958-2011-2018/748844-diy-interior-led-light-package.html)

### Air suspension lowering

Lower the factory air suspension by coding the height sensors, by fitting lowering links or with an electronic module. It's for looks; ride reports are mixed and an alignment is needed afterwards.

- Area: Suspension, wheels, brakes. Effort: Easy. QLD: check. Cost: $0 AUD.
- Coding is free if you own a capable scan tool. Links are US$55-270 (≈A$80-380). Module prices (TechArt, H&R ETS) weren't verified.
- Legality: Keep at least 100 mm ground clearance and meet ADR 43. Lower by no more than one-third of the suspension travel, with front and rear lowered equally.
- Gotcha: Foxwell NT530 coding fails below 12.1 V; do it with the ignition on, engine off and doors closed.
- Gotcha: One owner briefly ended up with the front 2" higher than the rear.
- Gotcha: Links lower every height level; some owners call the ride bouncy.
- Gotcha: An H&R module auto-raised at speed and wouldn't re-lower for one owner.
- Gotcha: Get an alignment afterwards; CV joint angles can cause vibration.
- Sources: [Rennlist: Foxwell NT530 ride height calibration](https://rennlist.com/forums/cayenne-958-2011-2018/1283468-foxwell-nt530-ride-height-calibration.html), [Rennlist: Lowering modules](https://rennlist.com/forums/cayenne-958-2011-2018/1161503-lowering-modules.html), [Rennlist: Lowering links installed on GTS 958](https://rennlist.com/forums/cayenne-958-2011-2018/1271892-lowering-links-installed-today-on-gts-958-a.html), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0), [VSB 14 Section LS (Tyres, Suspension, Steering)](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP11_Section_LS_Tyres_Suspension_Steering_Nov_2015_v4.pdf)

### Intake valve carbon cleaning

Walnut-blasting the direct-injected V8's intake valves. Build-up on the 958 V8 is generally mild and owners report little difference, so only do it when the intake is already off.

- Area: Reliability. Effort: Specialist. QLD: fine. Cost: $700–$1,400 AUD.
- US$500-1,000 at shops (≈A$700-1,400) when done as a standalone job.
- Gotcha: Only blast or soak cylinders whose valves are fully closed; otherwise there's a hydrolock risk.
- Gotcha: Walnut blasting needs a good compressor with dry air and a runner adaptor.
- Gotcha: Replace the eight intake manifold gaskets.
- Gotcha: Owners who cleaned at 60,000-115,000 miles noticed no driving difference.
- Sources: [Rennlist: DIY 958.1 CTT intake valve cleaning](https://rennlist.com/forums/cayenne-958-2011-2018/1201826-diy-958-1-ctt-intake-valves-cleaning.html), [Rennlist: Valve cleanup 4.8](https://rennlist.com/forums/cayenne-958-2011-2018/1507301-valve-cleanup-4-8-a.html), [Rennlist: Intake valves at 60,000 miles](https://rennlist.com/forums/cayenne-958-2011-2018/1333128-intake-valves-at-60-000-miles-for-those-who-are-curious.html)

### ECU tune

An OBD-flashed remap from Softronic, Fabspeed, FVD or similar. Tuners claim about +20-30 hp on the NA V8, and owners mainly notice sharper throttle and shifts. It's reversible, but several owners say it's not worth the money for power alone.

- Area: Sound and performance. Effort: Easy. QLD: fine. Cost: $1,530–$2,710 AUD.
- Softronic US$1,095-1,395 (≈A$1,530-1,950); Fabspeed XperTune A$2,709.80. A Tunezilla gearbox (TCU) tune was about US$400.
- Legality: Allowed without approval if the car still meets its ADR emissions standard. A power gain over 20% (about 62 kW on 309 kW) needs an Approved Person. Tell the insurer.
- Gotcha: The Fabspeed handheld needs a Windows PC (no Mac) and pairs with one car only.
- Gotcha: Keep a 15-25 A battery charger connected while flashing.
- Gotcha: Softronic is tuned for US 91-93 octane (roughly 95-98 RON), so use 98 in Australia.
- Gotcha: Expect a short relearn period with odd shifts or surging.
- Gotcha: Cobb doesn't support the 958.
- Gotcha: Tunes that disable rear O2 monitoring for cat deletes are emissions tampering.
- Sources: [Fabspeed XperTune 958 S/GTS](https://www.fabspeed.com/porsche-958-cayenne-s-gts-expertune-performance-software-2011-2014/), [Soul Performance: Softronic 958 tunes](https://soulpp.com/product/porsche-958-cayenne-softronic-ecu-tunes/), [Rennlist: Anyone with 958 Cayenne S running a tune](https://rennlist.com/forums/cayenne-958-2011-2018/1052870-anyone-with-958-cayenne-s-running-a-tune.html), [Rennlist: The state of Cayenne ECU tuning in 2023](https://rennlist.com/forums/cayenne-958-2011-2018/1331866-the-state-of-cayenne-ecu-tuning-in-2023-a.html), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0), [RACQ Motor Vehicle Insurance PDS](https://www.racq.com.au/-/media/project/racqgroup/racq/pdf/insurance/pds/motor-vehicle-insurance/pds-racq-motor-vehicle-insurance-091224-rcmv2-1224.pdf)

### Secondary cat bypass pipes

Pipes that replace the two secondary catalytic converters for a louder V8. Not road-legal in Queensland, and owners complain about the very loud cold start and pops. Avoid.

- Area: Sound and performance. Effort: Easy. QLD: not legal. Cost: $1,590–$1,598 AUD.
- Fabspeed A$1,598.10 (claims +11 wheel hp); Soul US$1,135 (≈A$1,590); Hanksville Hot Rods US$795 new.
- Legality: They remove emission control equipment. Alternative exhausts must keep equivalent emission control, and catalytic converters may only be replaced with ADR-marked parts. Fabspeed sells them for 'closed track events and off-road use only'.
- Gotcha: Defect notice, insurance and emissions exposure.
- Gotcha: Very loud cold starts; several owners removed them.
- Gotcha: Overrun pops.
- Gotcha: No warning light reported on the 958.
- Sources: [Fabspeed 958 S/GTS link pipes](https://www.fabspeed.com/porsche-958-s-gts-secondary-cat-bypass-pipes/), [Rennlist: Anyone running Fabspeed secondary cat bypass on 958 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/980352-anyone-running-fabspeed-secondary-cat-bypass-on-their-958-gts.html), [VSB 14 Section LA (Engines)](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP3_Section_LA_Engine_01jan2011_v3.pdf), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0)

### Sport catalytic converters

High-flow replacement cats (Cargraphic makes 958.1 GTS secondaries). A calmer alternative to bypass pipes, but there's no evidence they're ADR-compliant in Australia.

- Area: Sound and performance. Effort: Specialist. QLD: check. Cost: $2,450 AUD.
- One owner paid US$1,750 direct from Cargraphic (≈A$2,450).
- Legality: Replacement cats must carry the correct ADR markings and the car must still meet its ADR emissions standard. Treat them as non-compliant unless the supplier can show ADR 79 compliance.
- Gotcha: The owner preferred them to bypass pipes because they avoid the brutal cold start.
- Sources: [Rennlist: Sport cats installed on my 958 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/875173-sport-cats-installed-on-my-958-gts.html), [Rennlist: Cargraphic sport cats for 958.1 GTS](https://rennlist.com/forums/cayenne-958-2011-2018/929397-cargraphic-sport-cats-for-958-1-gts-opinions.html), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0)

### Cat-back exhaust

An aftermarket muffler system such as the Fabspeed Maxflo. Power gains are small, so you're paying for sound. It must still meet the noise limits.

- Area: Sound and performance. Effort: Weekend. QLD: check. Cost: $5,933 AUD.
- Fabspeed Maxflo A$5,932.77 (claims +8 wheel hp). Akrapovic slip-on price and 958.1 fitment not confirmed.
- Legality: Replacement silencers must comply with the car's noise label or ADR (certified level + 5 dB(A)), carry the manufacturer's marking and not leak.
- Gotcha: The Maxflo needs minor cutting at the factory exhaust break point.
- Gotcha: Keep valves if you want a quiet mode.
- Gotcha: Milltek's listed 958 cat-backs are Turbo-only.
- Sources: [Fabspeed Maxflo 958 S/GTS](https://www.fabspeed.com/porsche-958-s-gts-maxflo-performance-exhaust-system-2011-2014/), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0), [VSB 14 Section LT (Test Procedures)](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP12_Section_LT_Test_Procedures_V2_0_1Jan2011_v3.pdf)

### USB-C charging socket

Replace a 12V socket in the cupholder area with a USB-C/USB insert for proper phone charging. The armrest USB is mainly a media interface and may not charge well.

- Area: Tech. Effort: Easy. Time: 1-2 h.
- Generic inserts are cheap (not priced). Lower-effort option: a plug-in 12V-to-USB-C adapter.
- Gotcha: One owner had to grind the OEM socket apart and trim the opening with a Dremel, so it's not fully reversible without a new socket.
- Gotcha: Reuse the OEM plug: the centre pin is 12V; the brown wire is ground.
- Gotcha: The armrest USB is 'an interface plug, not a charging plug' for one owner; another says it charges fine on a '14 GTS.
- Gotcha: A blown AUX fuse on the passenger dash panel can kill the port.
- Sources: [Rennlist: USB port not charging iPhone](https://rennlist.com/forums/cayenne-958-2011-2018/1303877-usb-port-not-charging-iphoneo.html), [Rennlist: USB port in centre console](https://rennlist.com/forums/cayenne-958-2011-2018/1459778-usb-port-in-center-console-what-can-it-do.html)

### MagSafe wireless charging mount

A 958-specific MagSafe-compatible phone mount and charger (Nine Volt), with a hidden-cable install option and no drilling. Nice daily upgrade; price not verified.

- Area: Tech. Effort: Easy. Time: 30 min-1 h.
- Price not verified (vendor site couldn't be read).
- Gotcha: Needs a 20W supply. Car USB ports can't supply enough, and the charger will cycle on and off.
- Gotcha: The console is tightly packed. One owner's 'five minute' cable run took half an hour.
- Gotcha: There's a pre-cut hole in the bottom of the cupholder cubby for the cable.
- Sources: [Dana Neibert: custom 958 MagSafe mount](https://www.youtube.com/watch?v=Z5GmeYQylGs), [Rennlist: MagSafe charger in the slot ahead of the shifter](https://rennlist.com/forums/cayenne-958-2011-2018/1228257-converted-useless-slot-in-front-of-shifter-into-apple-magsafe-phone-charger.html)

### Coding: Auto Start/Stop remembers last setting

Make Auto Start/Stop stay off once you turn it off. Owners report mixed results, and it has to be coded in several modules.

- Area: Tech. Effort: Weekend.
- Needs a coding-capable scan tool (see tools).
- Gotcha: Changing only the engine module lasts one drive cycle.
- Gotcha: One 2011 owner did it in the air-con module ('Last Mode'). A 2018 GTS owner turned it off in all relevant modules, including 'save to last' in air-con.
- Gotcha: With PIWIS it has to be coded in 4 ECUs together, or the change silently doesn't save.
- Gotcha: One UK video believed it can't be disabled at all on his Cayenne.
- Sources: [Rennlist coding guide](https://rennlist.com/forums/cayenne-958-2011-2018/1160705-cayenne-coding-the-ultimate-guide-and-discussion.html), [Rennlist: Sport Plus and A.S.S. last setting with Launch](https://rennlist.com/forums/cayenne-958-2011-2018/1489280-added-sport-plus-with-launch-x431-and-a-s-s-saved-to-last-setting.html)

### Coding: display and cabin extras

Smaller tweaks: turn on hidden PCM options (colder centre vents), hidden instrument display settings, the welcome screen logo, and auto-headlight sensitivity.

- Area: Tech. Effort: Easy. Time: 30 min.
- Needs a coding-capable scan tool (see tools).
- Gotcha: Leave the seat-belt chime alone. Disabling it blanks the Park Assist display (restored by re-enabling it), and it's a safety warning.
- Gotcha: Auto-headlight sensitivity (RLS coding) didn't stop daytime auto-on for one owner.
- Gotcha: Rear sunshades lowering in reverse was coded but didn't work.
- Sources: [Rennlist coding guide](https://rennlist.com/forums/cayenne-958-2011-2018/1160705-cayenne-coding-the-ultimate-guide-and-discussion.html)

### Drop-in air filters

BMC F1 drop-in filters for the stock airbox (a V8 needs two). There's no meaningful power gain, just a little more induction sound.

- Area: Sound and performance. Effort: Easy. QLD: fine. Cost: $265 AUD.
- Fabspeed A$264.89; Soul US$85-170.
- Legality: Allowed without approval, but they must not increase intake noise. Oiled filters can give false sensor readings.
- Gotcha: On cars with the Sound Symposer, remove the two screws on the soundaktor diaphragm rather than the hose clips.
- Sources: [Fabspeed BMC F1 filter 958 S/GTS](https://www.fabspeed.com/porsche-958-s-gts-bmc-f1-replacement-air-filter/), [Rennlist: Air filter change in GTS with Sound Symposer](https://rennlist.com/forums/cayenne-958-2011-2018/1333491-air-filter-change-in-gts-turbo-s-with-sound-symposer.html), [TMR Vehicle Standards Information: Minor Modifications (Feb 2026)](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0)

### Alcantara steering wheel retrim or replacement

If the Alcantara rim is genuinely worn through after cleaning, it can be retrimmed, swapped for an OEM GTS Alcantara wheel, or covered with a stitch-on cover. Retrim is skilled work; a cover is the cheap, reversible option.

- Area: Interior. Effort: Specialist. Time: One Macan GTS owner took about 8 hours to retrim his own wheel.
- No published Brisbane retrim prices found - get quotes. OEM GTS Alcantara wheel listed by Suncoast (SKU 958GTSALC) but price not visible.
- Gotcha: Try a proper Alcantara clean first.
- Gotcha: Stitch-on covers divide opinion on looks.
- Sources: [Rennlist Macan: DIY Alcantara wheel retrim](https://rennlist.com/forums/macan/1518011-refreshed-my-factory-alcantara-gt-sport-steering-wheel-after-45-000-km.html), [Rennlist: OEM GTS Alcantara wheel source](https://rennlist.com/forums/cayenne-958-2011-2018/1158366-991-sport-design-steering-wheel-compatibility-with-958-1-a.html)

### Headliner sag re-cover

958 headliners sag in hot climates as the foam backing breaks down; the GTS's standard Alcantara lining is less prone but costlier to redo. Re-gluing the old fabric does not work - the board has to come out and be re-covered.

- Area: Interior. Effort: Specialist.
- Mobile trimmer US$1,100 for headliner plus pillars; Porsche pre-wrapped board about US$2,500. DIY material about US$15-25 per yard (standard fabric; Alcantara far more).
- Gotcha: Do not clamp freshly glued fabric - it dimples the foam.
- Gotcha: Colour matching unusual interiors is hard.
- Gotcha: Blocked sunroof drains are one cause - check them.
- Sources: [Rennlist: 958 headliner DIY](https://rennlist.com/forums/cayenne-958-2011-2018/1410429-958-cayenne-alcantara-headliner-diy-removal-new-material-and-reinstall-with-photos.html), [Rennlist: sagging headliner causes](https://rennlist.com/forums/cayenne-958-2011-2018/1343740-sagging-headliner.html), [Rennlist: headliner costs](https://rennlist.com/forums/cayenne-958-2011-2018/1514141-headliner-sagging.html)

### Multifunction/heated steering wheel retrofit

The GTS SportDesign wheel has paddles but no buttons or heating. A newer Porsche wheel fits via an adapter (or, per one owner, a 718 clock spring) - the one retrofit with real daily payoff, but it involves the airbag.

- Area: Retrofits. Effort: Specialist. Time: One fitter reported around 30 minutes with the adapter.
- One owner's total about US$2,350: used wheel about US$1,399-1,499, adapter about US$500, airbag about US$350. GPS Adapter STMV1 listed at US$349-399.
- Gotcha: PIWIS coding may be needed.
- Gotcha: 971 Panamera wheels look similar but are not supported by the adapter.
- Gotcha: Avoid no-name Alibaba wheels.
- Gotcha: Keep the original wheel for resale.
- Sources: [GPS Adapter STMV1](https://gpsadapter.us/products/stmv1), [Rennlist: 958.1 to 958.2 wheel](https://rennlist.com/forums/cayenne-958-2011-2018/962449-cayenne-958-steering-wheel-upgrade-958-1-to-958-2-a.html), [Rennlist: costs and sport pod](https://rennlist.com/forums/cayenne-958-2011-2018/1165842-those-with-steering-wheel-upgrades-were-you-able-to-use-the-sport-pod.html), [Rennlist: 718 clock spring OEM route](https://rennlist.com/forums/cayenne-958-2011-2018/1502726-diy-facelift-steering-wheel-on-cayenne-958-oem-solution.html)

### Skip: OEM 958.2 tail light conversion

Skip. The GTS already has tinted LED tails, and OEM facelift tails need a facelift tailgate and rear bumper, re-pinned plugs, new brackets and covers, and bodyshop fitting.

- Area: Retrofits. Effort: Specialist.
- Major bodywork; not costed.
- Gotcha: Brake and indicator pins are swapped between generations.
- Gotcha: Power tailgate needed re-teaching or programming.
- Sources: [Rennlist: rear facelift project](https://rennlist.com/forums/cayenne-958-2011-2018/1062087-cayenne-958-1-to-958-2-rear-facelift-project.html), [Rennlist: GTS tails are the tinted units](https://rennlist.com/forums/cayenne-958-2011-2018/959175-diy-958-1-taillight-swap.html), [Porsche 2013 Cayenne GTS press text](https://www.netcarshow.com/porsche/2013-cayenne_gts/), [German Wikipedia: Porsche Cayenne (Typ 92A), 2014 facelift](https://de.wikipedia.org/wiki/Porsche_Cayenne_(Typ_92A))

### Skip: OEM 958.2 headlight/front conversion

Skip. Facelift headlights need a new bonnet, wings and bumper plus eight under-bonnet support parts with cutting and welding; one converter could not get AFS and high beam working.

- Area: Retrofits. Effort: Specialist.
- Major bodywork; not costed.
- Gotcha: 958.1 and 958.2 headlights are not interchangeable on their own.
- Sources: [Rennlist: front facelift attempt](https://rennlist.com/forums/cayenne-958-2011-2018/1057761-cayenne-958-1-to-958-2-facelift-project-front-only.html), [German Wikipedia: Porsche Cayenne (Typ 92A), 2014 facelift](https://de.wikipedia.org/wiki/Porsche_Cayenne_(Typ_92A))

### Skip: aftermarket matrix headlights and sequential tails

Skip. Plug-and-play 'matrix-style' headlights and 958.2-style sequential tails exist, but Rennlist owners rate OEM beam quality higher and Australian road legality is unconfirmed.

- Area: Retrofits. Effort: Easy. QLD: check.
- One owner paid about C$1,000 for a pair of aftermarket headlights.
- Legality: ADR compliance or E-marking and roadworthy acceptance not confirmed; TMR guidance could not be accessed.
- Gotcha: Keep the OEM lamps for resale.
- Gotcha: Serhan's lamps needed the supplied covers and careful seating to fit flush.
- Gotcha: Australian-delivered cars should already have amber rear indicators.
- Sources: [Rennlist: aftermarket matrix headlights](https://rennlist.com/forums/cayenne-958-2011-2018/1305758-aftermarket-matrix-headlights-for-the-cayenne-958-1-a.html), [Rennlist: aftermarket tail lights](https://rennlist.com/forums/cayenne-958-2011-2018/1282657-aftermarket-new-style-tail-lights-for-1-a.html)

### Skip: LED bulbs in OEM headlights

Skip. Owners report no dash errors with some LED bulbs, but one admits they 'aren't approved for road use'.

- Area: Retrofits. Effort: Easy. QLD: check.
- Not costed.
- Legality: Forum owner describes the bulbs as not approved for road use; not confirmed against Queensland rules.
- Sources: [Rennlist: LED bulb conversion](https://rennlist.com/forums/cayenne-958-2011-2018/1336520-958-porsche-cayenne-diy-led-headlight-upgrade-conversion.html)

### Queensland modification rules

- **Approval categories** Minor and basic modifications need no approval but must meet the vehicle standards. Complex modifications (engine upgrades, suspension upgrades, steering or brake replacements) need certification by an Approved Person under a Queensland-approved code. ([tmr.qld.gov.au](https://www.tmr.qld.gov.au/_/media/safety/vehicle-standards-and-modifications/vehicle-modifications/queensland-road-vehicle-modification-handbook.pdf))
- **Notifying changes** Modifications that change the registration particulars must be notified to TMR within 14 days (form F3524). ([tmr.qld.gov.au](https://www.tmr.qld.gov.au/safety/vehicle-standards-and-safety/vehicle-modifications))
- **Exhaust noise** For ADR 83/00 vehicles, stationary noise must not exceed the certified level by more than 5 dB(A), tested under the NTC National Stationary Exhaust Noise Test Procedure. ([infrastructure.gov.au](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP12_Section_LT_Test_Procedures_V2_0_1Jan2011_v3.pdf))
- **Replacement mufflers** Replacement silencers must comply with the car's original external noise label, the ADRs or the Vehicle Standards and Safety Regulation 2021, must carry the manufacturer's marking, and must be leak-free and adequately supported. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Catalytic converters** Catalytic converters may be replaced only with parts bearing the correct ADR markings. Alternative exhausts must keep equivalent emission control equipment, so removing cats is not permitted. ([infrastructure.gov.au](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP3_Section_LA_Engine_01jan2011_v3.pdf))
- **ECU remaps** Aftermarket or remapped engine computers are allowed without approval if the car still meets its ADR emissions standard. A power increase over 20% must be certified by an Approved Person. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Air filters** Replacement and pod filters are minor modifications, but they must not increase intake noise, and emission sensors must stay fitted. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Crankcase ventilation** Engine component changes must not affect gaseous emissions compliance. PCV (crankcase ventilation) has been an ADR requirement since ADR 26, so a catch can must not vent to atmosphere. ([infrastructure.gov.au](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP3_Section_LA_Engine_01jan2011_v3.pdf))
- **Lowering: clearance** A vehicle may be lowered provided it keeps at least 100 mm of ground clearance and meets ADR 43. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Lowering: travel** Lowering must not exceed one-third of the working suspension travel, and front and rear must be lowered by the same amount. ([infrastructure.gov.au](https://www.infrastructure.gov.au/sites/default/files/migrated/vehicles/vehicle_regulation/bulletin/files/NCOP11_Section_LS_Tyres_Suspension_Steering_Nov_2015_v4.pdf))
- **Air suspension** Replacing some or all of the suspension with a non-original air or hydraulic system requires an Approved Person. Factory air suspension is original equipment. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Anti-roll bars** Replacement or additional anti-roll bars may be fitted without specific approval. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Tyre diameter** For passenger cars and soft roaders (AWD other than ADR category MC), overall diameter may be up to 15 mm larger or 26 mm smaller than any tyre the manufacturer designates for the model. MC-category vehicles may go up to 50 mm larger. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Tyre width and axles** Tyres may be no more than 1.3 times as wide as the manufacturer's widest optional tyre. Tyres on an axle must be the same size and construction, and front and rear aspect ratios must be within 10 of each other. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Tyre ratings** Load rating must be at least the placard figure. Minimum speed ratings are set by vehicle type (for example 180 km/h for a car, 140 km/h for an off-road passenger vehicle). ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Wheel spacers** Spacers or adaptors between wheels and hubs are not permitted unless supplied by the vehicle manufacturer. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Brakes** Manufacturer-optional replacement brakes may be fitted without approval. Non-standard brake upgrades need an Approved Person, and discs must not be machined beyond the reconditioning limit. ([publications.qld.gov.au](https://www.publications.qld.gov.au/dataset/vehicle-standards-information/resource/ae3044ba-8c71-4cc4-86f1-df42783a09e0))
- **Defect notices** Police or transport inspectors can issue a defect notice at a roadside check if a modification is not compliant. The vehicle must be repaired and the notice cleared; failure can lead to fines or registration cancellation. ([qld.gov.au](https://www.qld.gov.au/transport/buying/vehicleinspection/randominspection/defect))
- **Insurance** Tell your insurer about modifications (RACQ defines them to include anything that increases engine output or modifies suspension or wheels). An undeclared or illegal modification can lead to a refused claim or a cancelled policy. ([racq.com.au](https://www.racq.com.au/-/media/project/racqgroup/racq/pdf/insurance/pds/motor-vehicle-insurance/pds-racq-motor-vehicle-insurance-091224-rcmv2-1224.pdf))

## 958 Cayenne GTS questions, answered

### Which 958 Cayenne is the best one to buy?

The 2013-14 958.1 GTS. It has the last naturally aspirated V8 (the 4.8), it's past the early-958 cam-bolt faults, and nothing GTS-specific fails - its weak points are shared with the S. A 2013-14 958.1 S has the same V8 and is the value pick. A MY16 958.2 GTS is faster and newer, but its twin-turbo V6 is harder to service at home.

### What is the most common problem with the 958 Cayenne?

The transfer case: its multi-plate clutch pack binds or slips, and twelve YouTube channels and every forum stream name it the 958's weak point. The other faults rated likely on a 958.1 V8 are the glued coolant pipe letting go at the thermostat housing, air strut leaks and compressor burn-out, worn spark plugs and failing ignition coils, and heavy brake wear with ABS and pad-wear sensor loom faults.

### How often should the 958 Cayenne transfer case fluid be changed?

Porsche's schedule says 240,000 km or 16 years, but owners and specialists change it far sooner - typically every 30,000-60,000 km (Rennlist owners every 15,000-20,000 miles, PcarWise 40,000 miles, eCarGuides 120,000 km). It takes Porsche transfer case fluid 000 043 305 63, 0.875 L per the owner's manual, so buy two 850 ml bottles. The car must be level: remove the fill plug first, drain, then fill until it overflows, with two new plugs 955 301 115 01.

### What oil does the 958 GTS 4.8 V8 take, and how much?

Oil with Porsche A40 approval: SAE 0W-40 for all temperatures, or 5W-40 or 5W-50 above -25 °C. Australian examples are Mobil 1 Triple Action 0W-40 and Castrol EDGE 0W-40 A3/B4. It takes 9.0 L with a filter change (8.5 L without) per the owner's manual. There is no dipstick - read the level in the instrument cluster - so fill about 8.5 L, run it warm and top up in 0.25 L steps. Buy 10 L.

### Can you service a 958 Cayenne GTS at home?

Largely, yes. The naturally aspirated 4.8 V8 is workable from the top: oil and filter, spark plugs, ignition coils, air filters and transfer case fluid are all rated easy, and coolant, differential fluid, brakes and air struts can be done with care. The 8-speed Tiptronic fluid change needs a special tool. Leave transfer case replacement to a specialist, and walk away from a car with an oil leak from the timing chain cover.

### Does the 958 Cayenne GTS have air suspension?

Australian S and GTS cars came with air suspension as standard (option code 1BK). Elsewhere the GTS came on steel springs with PASM, with air as an option. Air strut leaks and compressor burn-out are rated likely on a 958.1, so assume it's part of the ownership cost.

### How do I find what options a 958 Cayenne has?

Look for the option sticker under the boot floor near the spare wheel and in the service book - on 958s it's hit and miss, so check both. Failing that, give the VIN to a Porsche Centre or a specialist with PIWIS and ask for the factory equipment list. The VIN itself doesn't contain the options.

### What are the 958 Cayenne option codes for PDCC, PTV Plus and Sport Chrono?

PDCC is 0AW, PTV Plus is 1Y1 and Sport Chrono is QR4. Air suspension with PASM is 1BK, and Burmester sound is 9VJ.

## 958 Cayenne videos worth watching

- [Porsche Cayenne 958.1/958.2 Buyers guide (2011-2018) Avoid buying a broken Cayenne (TDI, V8, Turbo)](https://www.youtube.com/watch?v=JGopI3XxIqg) (The Miles Driven, 16.8 min): Best single overview of 958 recalls, common faults and engine-by-engine checks, compiled from owner reports.
- [Porsche Cayenne - the best to buy in every generation](https://www.youtube.com/watch?v=tvY3ccqIrIg) (The Miles Driven, 32.7 min): An ex-prestige used-car salesman picks the pre-facelift V8 GTS as the 958 to have if it must be a V8.
- [BUYING a Porsche Cayenne 958? Everything You NEED to Know! (Full Buyer's Guide)](https://www.youtube.com/watch?v=92dGcT251MA) (SVP - Sports Vehicle Performance, 12.6 min): An independent workshop walks through 958 weak points with the car on the hoist, including transfer box, air suspension and brake costs.
- [Porsche Cayenne 958 - Check For These Issues Before Buying](https://www.youtube.com/watch?v=BG-ORGJQZRA) (Before Buying, 14.4 min): Gives kilometre-based wear points for the 958, including when the V8's plastic coolant pipe tends to crack.
- [Porsche Cayenne Problems & Things That Will Break (2011 - 2018 Models)](https://www.youtube.com/watch?v=Y7-YjYYPOAU) (Driven By Satch, 11.8 min): A UK owner's list of the 958 faults he met, led by the transfer case, with quoted repair prices.
- [What you need to know before buying a Porsche Cayenne with transfercase issues](https://www.youtube.com/watch?v=prE73sK0xfM) (Top Auto Nick, 5.2 min): A workshop owner shows a failed 958 transfer case and explains why it needs a new unit, an updated vent line and coding.
- [REAL COST of 958 Porsche Cayenne Maintenance?! (2.5 Year Re-Cap)](https://www.youtube.com/watch?v=O-iUe9agHdg) (mydadvice, 20.3 min): Itemised 2.5-year running costs priced three ways: DIY, independent shop and dealer.
- [2013 Porsche Cayenne GTS is an absolute bargain!](https://www.youtube.com/watch?v=hpeBV_7jkz8) (Carrera Cafe, 12.2 min): A 958.1 GTS owner's view: the NA V8 is very reliable and the transfer case is the one big flaw.
- [Do I regret buying a 10-year-old Porsche Cayenne?](https://www.youtube.com/watch?v=OfxYvCkuaDs) (PETER FRITZ | Life Behind Glass, 15.2 min): The only Australian owner in the set, with a local purchase price and a transfer-case fluid routine.
- [Porsche Cayenne GTS: 5 Year Review](https://www.youtube.com/watch?v=2V2Ko0gOXGQ) (Turn 5ive, 15.0 min): Five years of daily driving and towing in a first-gen GTS for under USD 7,000 with an independent mechanic.
- [2013 Porsche Cayenne Review Over 4 years of Ownership!](https://www.youtube.com/watch?v=Gg_3cItx6bg) (Kevin's European Garage, 12.7 min): A home mechanic's 4.5 years with a 958, covering what failed and why non-turbo engines are easier to work on at home.
- [Is the Porsche Cayenne GTS The Best Enthusiast SUV to Own?](https://www.youtube.com/watch?v=qtELW3232t4) (Speed Academy, 16.4 min): Drivers of the later twin-turbo V6 GTS say they miss the instant response of the old NA V8.
- [How to Change Oil and Filter Porsche Cayenne 4.8L V8 2010-2014](https://www.youtube.com/watch?v=FcZfuOEyUks) (2CarPros, 13.6 min): Step-by-step oil and filter change on the exact engine, including the scan-tool service reset.
- [PORSCHE CAYENNE 958 V8 4.8L SPARK PLUGS & IGNITION COILS REMOVAL AND REPLACEMENT](https://www.youtube.com/watch?v=GsWVRKwiCpw) (Bucket of Bolts, 8.1 min): Plugs and coils on the 4.8 NA, all from the top, with the torque specs and the one-time-use bolt trap.
- [PORSCHE CAYENNE 958 V8 4.8L WATER PUMP & THERMOSTAT REMOVAL & REPLACEMENT](https://www.youtube.com/watch?v=aY9nDVGM4KU) (Bucket of Bolts, 10.7 min): Shows the 4.8 water pump and thermostat can be done from the front on a driveway, without removing the intake.
- [Porsche Cayenne 958 Transfer Case Fluid Change DIY](https://www.youtube.com/watch?v=JiGQj7twUcE) (Help Me DIY, 5.6 min): The single most important preventive DIY on a 958, shown start to finish in about five minutes.
- [Porsche Cayenne 958 92A transfer case fix (Parts 1 and 2)](https://www.youtube.com/watch?v=0mJd6NeivbA) (Kevin's European Garage, 13.1 min): Repeated fluid flushes cured a shuddering 958 transfer case; part 2 (https://www.youtube.com/watch?v=61Kf5d12rzs, 2020-07-22) checks the fluid 11,000 miles later.
- [Porsche Cayenne 958 Transmission Fluid and Filter Replacement (2011-2019)](https://www.youtube.com/watch?v=XGvEcJt5NbI) (Pelican Parts, 6.7 min): Clear 8-speed fluid and filter procedure, including the scan-tool temperature window for setting the level.
- [2008-2018 Porsche cayenne 4.8 coolant vent hose replacement DIY](https://www.youtube.com/watch?v=AzVq1fYQmcM) (regular mechanic, 21.0 min): The typical big-weekend 4.8 job: replacing a cracked plastic coolant line under the intake manifold in a driveway.
- [Porsche Cayenne 958 Air Compressor Replacement](https://www.youtube.com/watch?v=0O4oAcNSr58) (Help Me DIY, 15.2 min): Home replacement of a leaking air-suspension compressor, which then revealed leaking front struts.
- [FIXING THE DREADED PORSCHE DRIVESHAFT CENTER SUPPORT BEARING CARRIER! EASIER THAN WE THOUGHT!!](https://www.youtube.com/watch?v=oLPH7Rk66-I) (Turn 5ive, 6.6 min): A split aftermarket carrier fixes a failed driveshaft centre support without removing the shaft.
- [DIY Wireless CarPlay Retrofit in Porsche PCM 3.1](https://www.youtube.com/watch?v=ijxsODjeK10) (Nick Roshon, 7.2 min): A GTS owner adds wireless CarPlay inside the factory unit, keeping the original screen and reversing camera, for under USD 300.
- [CarPlay Upgrade for Porsche Cayenne 958 | Not as Plug & Play as Advertised](https://www.youtube.com/watch?v=nczPCU5IPOQ) (Dean Holden, 28.1 min): An honest review of a replacement Android screen that cost about GBP 700 and lost several factory functions, scored 6/10.
- [Wireless Apple CarPlay Mr 12Volt 958 Porsche Cayenne PCM3.1](https://www.youtube.com/watch?v=v3zUtGP2ePY) (MrSteeleDrives, 35.8 min): A full Mr12Volt install with a six-week follow-up on what worked and what needed fixing.
- [Installing Wireless CarPlay in my 958 Cayenne GTS + Big announcement & Upcoming mods!](https://www.youtube.com/watch?v=ya0dOkCV19E) (Brendon Shultz, 10.9 min): A GTS owner fits a roughly USD 100 AliExpress kit and is candid that the first one was faulty.
- [A USED Porsche Cayenne: What have I Changed or Modified?](https://www.youtube.com/watch?v=py7NjbpaTzw) (Alex Beras, 8.5 min): A 4.8 V8 owner explains why he removed a loud aftermarket exhaust and went back to stock.
- [Bargain Porsche Cayenne 958 Exhaust Tips | Best Budget Quad Exhaust Finishers Installation](https://www.youtube.com/watch?v=E1Pb7qH-0es) (SPANNER RASH, 15.8 min): A cheap bolt-on swap to quad exhaust tips, with a useful warning about their extra weight.
- [Porsche Cayenne Turbo 958 SOUL Exhaust Install and Sound Clips](https://www.youtube.com/watch?v=6IR6nOq-Ho4) (Help Me DIY, 20.2 min): Shows how much rusty-bolt work a secondary cat bypass involves, and how little it changes the cabin sound.
- [How To Lower Your Porsche Cayenne Air Suspension (Also Panamera & Macan) & where to buy](https://www.youtube.com/watch?v=ad6LX7t2XLI) (Driven By Satch, 11.8 min): Compares lowering links with changing ride height through a scan tool, and shows what happens when you go too low.
- [New Wheels for My Porsche Cayenne Nearly Ended in Disaster!](https://www.youtube.com/watch?v=yvcPHq6qlI4) (Dean Holden, 41.3 min): A wheel, tyre and spring swap that shows what goes wrong, including a lost locking wheel-nut key.
- [Porsche Cayenne 2014 GTS 958 Spacers Installation 15mm 20mm](https://www.youtube.com/watch?v=Cldo-qwnQDA) (K's Garage, 3.8 min): A short driveway spacer install on a GTS, including how to put the air suspension into jack mode.
- [Transform Your Porsche Cayenne By Upgrading Old Headlights To 2024 Style](https://www.youtube.com/watch?v=45I7ZmO7fCY) (Serhan's Garage, 14.2 min): A plug-and-play swap to modern-style LED headlights using the tool from the car's boot kit.
- [Tail-light Removal and Upgrade for Porsche Cayenne!](https://www.youtube.com/watch?v=ukO5Md8I84g) (Serhan's Garage, 25.0 min): A taillight swap with a shortcut for the tailgate lamp that avoids breaking trim clips.
- [Porsche Matrix Style LED Headlights for 958 Cayenne - Review](https://www.youtube.com/watch?v=eRjAerO_rRE) (Lightwerkz Global, 10.0 min): The only headlight video with light-meter readings comparing factory and aftermarket output.
- [Porsche Cayenne - LED interior lights](https://www.youtube.com/watch?v=Y-6tKCzAKK0) (EMD Porsche Specialist Caringbah Sydney, 6.3 min): A Sydney Porsche specialist shows the easy interior LED swap, and an easy first project.
- [Unlocking Secret Features: Coding Hidden Functions on Porsche Cayenne 958!](https://www.youtube.com/watch?v=Q5hvDkvMd3A) (Bucket of Bolts, 4.9 min): Five quick coding changes with a Launch scan tool, each just a switch from no to yes.
- [Porsche Cayenne Hidden Features, Hints, Tips & Tricks - Porsche Dealer Never Told Me About This](https://www.youtube.com/watch?v=sCLubUUY2Us) (Driven By Satch, 9.9 min): Eleven built-in features you can find without any tools, from the key tricks to the hidden cluster menu.
- [Porsche Cayenne 958 Remove and FIX the Buttons on the Center Console!](https://www.youtube.com/watch?v=jN7ym9_Le-4) (Help Me DIY, 11.4 min): A dead climate button fixed for nothing by tightening the circuit board screws.
- [PORSCHE Cayenne Dashboard Removal. Leather Shrunk! Need to Replace or Fix. DIY How to take it out.](https://www.youtube.com/watch?v=h67YtBMEgF4) (OneSimpleDad, 14.7 min): An owner removes a shrinking leather dash himself after a USD 10,000 dealer quote; it is adult-only because the passenger airbag comes out.
- [Porsche Cayenne 2011 - 2018 how to fit dash cam to fuse box, simple step by step.](https://www.youtube.com/watch?v=rwENdp9iHXA) (PJs projects (Pjsprojects), 13.0 min): A step-by-step dash cam hardwire on a right-hand-drive car, including finding the right fuse with a multimeter.
- [From Old to New: How I Transformed My 2011 Cayenne Without Breaking The Bank](https://www.youtube.com/watch?v=kF_-BYGIs7Q) (Serhan's Garage, 23.2 min): Eight years of cheap mods on one car, with notes on what held up and what didn't.

---

Put together by Tim Neilen (https://tim.neilen.com.au) with a small stack of AI research agents, researched 20/09/2026. Not advice. Prices and availability were right at the time and will drift. Check part numbers against the car's VIN before ordering.