2008 Porsche Cayenne Electrical system Problems
- Complaints
- 7about this part
- Share
- 26%of 27 total for the year
- Median mileage
- 55,300miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the electrical system of the 2008 Porsche Cayenne, 26% of the 27 complaints for this model year. Where a mileage was given, the median is 55,300 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Have experienced ongoing electrical system mirror problems, with my 2008 Porsche Cayenne, where the outside mirrors moved on their own while driving and parking. First experienced this electrical system mirror problem on (3/23/09) at 12,391 miles, as this car was taken to same dealership where I had purchased it (inskip penske Porsche in warwick, ri (12) separate times for unsuccessful attempts at repair. …”
NHTSA complaint #10502550, filed 2013-03, 12,391 miles“The car cut out as I was crossing a intersection while in motion leaving the car disabled in the middle of a busy intersection, luckily other drivers saw the problem and went around me. All warning lights came on including the ignition lock fault. I turned it off and after 2 minutes it restarted. The next day the car would not start, the ignition lock fault came on, and then all of the other warning lights came on and the engine would not turn over and was locked in park. This happened once before in feb 2017 when a corroded wires were found in a main bundle of wires in the drivers footwell. …”
NHTSA complaint #11072224, filed 2018-02, 83,534 miles“Parked vehicle and attempted to turn off got a red alert steering faulty,everything locked up including transmission and window switches..had to be flat bedded to a Porsche dealership took a week for them to figure out,had to replace steering column.concern is what would have happened if driving at the time..got no answer”
NHTSA complaint #11209077, filed 2019-05, 55,300 miles“The contact owns a 2008 Porsche Cayenne. While driving 35 MPH, the vehicle stalled without warning. It was diagnosed that the air conditioner condensation drain line was plugged, which caused the electrical issue. The manufacturer was not made aware of the issue. The failure mileage was 72,340.”
NHTSA complaint #10898245, filed 2016-08, 72,340 miles“Porsche Cayenne have water drain design issue. When raining or wash the car, the water drain clog will make water flood the inside of the vehicles, and damage the wires under the driver's side and passenger side. This is a common issue, Porsche know this, but not fix it.”
NHTSA complaint #11350359, filed 2020-08Related service bulletins
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Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 2 | 40% |
| 2025 | 1 | 20% |
| 2024 | 1 | 20% |
| 2023 | 2 | 40% |
| 2021 | 6 | 29% |
| 2020 | 5 | 21% |
| 2019 | 10 | 21% |
| 2018 | 3 | 23% |
| 2017 | 7 | 39% |
| 2016 | 3 | 8% |
| 2015 | 3 | 21% |
| 2014 | 6 | 11% |
| 2013 | 3 | 8% |
| 2012 | 3 | 11% |
| 2011 | 1 | 3% |
| 2009 | 4 | 27% |
| 2008 | 7 | 26% |
| 2006 | 6 | 15% |
| 2005 | 3 | 9% |
| 2004 | 6 | 16% |
Other parts of the 2008 Porsche Cayenne
6 complaintsTransmission and drivetrain
6 complaintsFuel system
4 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsExterior lighting
2 complaintsSuspension
2 complaintsTires
2 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsOther or unknown
1 complaintsSeats
1 complaintsSteering
1 complaints
← All problems reported for the 2008 Porsche Cayenne
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology