2004 Porsche Cayenne S Engine cooling Problems
- Complaints
- 11about this part
- Share
- 23%of 48 total for the year
- Median mileage
- 32,492miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the engine cooling of the 2004 Porsche Cayenne S, 23% of the 48 complaints for this model year. Where a mileage was given, the median is 32,492 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.
“**uncontrolled acceleration** Cayenne S accelerated uncontrollably while driving. While driving at approx 60 MPH, I encountered traffic ahead and took my foot off the accelerator, however the car began accelerating. I tried lifting the pedal with my foot, no luck, applied the brakes and the car slowed, however, when I removed my foot from the brake, the cayenne continued to accelerate. The cruise control had not been activated and was off. …”
NHTSA complaint #10303704, filed 2010-02, 77,059 miles“The Porsche cayenne (and other Porsche models) have a coolant leak problem. My vehicle's low coolant level light came on. I checked the coolant level and found it to be severely low. The Porsche dealer service (and on-line forums) report that Porsche cayenne engines are encountering a coolant leak problem that appears to affect all Cayenne S, cayenne turbo and cayenne turbo s engines built from 2003 to 2006 (my vehicle is a 2004 model). The coolant leak problem is located in the plastic coolant pipes located under the intake manifold of the engine. …”
NHTSA complaint #10367939, filed 2010-11, 77,000 miles“Porsche knowingly manufactured cayenne model vehicles with plastic coolant tubes that degrade and fracture causing engine coolant to leak into the engine, potentially leading to significant engine damage. Porsche has known about this defect and failed to make consumers aware of the potential failure despite the risk to the owners safety and pocketbook.”
NHTSA complaint #10446282, filed 2012-02, 85,416 miles“Coolant pipe start to fail for the model year 2004-2006. The material for coolant pipe was made of plastic and it resulted in a disintegration of pipe overtime due to temperature changes. Porsche technicians identified this issue and Porsche engineers also identified this issue. They came up with a replacement part which is made of aluminum to mitigate damages to the engine due to sudden failure of coolant pipe. …”
NHTSA complaint #10401458, filed 2011-05, 98,000 miles“Dt: the air bag and the check lights came on. The consumer contacted the dealer and they said they could not service the car until 10/17/2005. Called Porsche customer service, and they said they could help. The consumer believed this was a safety hazard, and he did not want to drive the car.”
NHTSA complaint #10137463, filed 2005-10, 19,000 milesEngine cooling: other model years
Other parts of the 2004 Porsche Cayenne S
14 complaintsFuel system
8 complaintsElectrical system
7 complaintsEngine
6 complaintsLatches, locks and linkages
4 complaintsTires
4 complaintsBrakes
3 complaintsAir bags
2 complaintsExterior lighting
2 complaintsBody and structure
2 complaintsVehicle speed control
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaints
← All problems reported for the 2004 Porsche Cayenne S
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