| Issue ID | 769648 |
| Internal NHTSA # | 10313724 |
| Manufacurer | PORSCHE CARS NORTH AMERICA, INC. |
| Brand | PORSCHE |
| Model | CAYENNE S |
| Model Year | 2008 |
| File date | 04/01/08 |
| Component | POWER TRAIN:AUTOMATIC TRANSMISSION |
| Product type code | VEHICLE |
| Description of the problem | On my 2008 porsche cayenne s ( purchased in march 2007) i have at least 3 times experienced a incorrect downshift initiated by the automobile in all cases the car/computer obviously wanted to shift down to a lower gear ( going up a steep hill at highway speed, traversing a steep parking lot at low speed) etc rather than shifting one gear the car seems to have shifted 2 or 3 gears at one time the engine revved to about 5000 rpm within the red line limits- very noisy and disconcerting i exited the problem by manually shifting to neutral which cleared the problem then back to drive i reported the issue to my dealer who obviously could not reproduce the very intermittent problem, he also says he checked the computer log and could not find any report and that there no service bulletins relating i think that this could be a serious safety issue being potentially a major driver distraction. |
| Vehicle Mileage at Failure | 10000 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | BOISE, ID |
| VIN pattern | WP1AB29P58LXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | |
| Drive train type | |
| Transmission type | |
| Vehicle speed | 45 |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |