| Issue ID | 849875 |
| Internal NHTSA # | 10392254 |
| Manufacurer | CHRYSLER GROUP LLC |
| Brand | JEEP |
| Model | PATRIOT 4X4 |
| Model Year | 2009 |
| File date | 08/02/11 |
| Component | TIRES:PRESSURE MONITORING AND REGULATING SYST |
| Product type code | VEHICLE |
| Description of the problem | Chrysler is intentionally inflating tires to 40 psi to prevent low pressure warning light from coming on. I took my jeep patriot to rochester hills (mi) chrysler for a tire rotation i found the tires inflated to 40 psi when i inquired, the service rep said it was "to prevent the warning light from coming on when it gets to 0 degrees." 40 psi is 8 psi over the door sticker recommended 32 psi. If you use the "12 degrees changes the pressure by 1 psi" as per the operators manual and you inflated the tires at the record high ambient of 62 degrees and checked them again at the record low of -11 degrees (73 divided by 12= 6 psi) the departure from average low 19 degrees to record low -11 equals 2 psi. The departure from the average high 33 degrees to average low 19 degrees equals 1 psi. Chrysler's actions indicate a problem with their tire pressure sensors. |
| Vehicle Mileage at Failure | 20000 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | SHELBY TWP., MI |
| VIN pattern | 1J4FF28B19DXXXXXX |
| 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 | 4 |
| Drive train type | 4WD |
| Transmission type | |
| Vehicle speed | 1 |
| 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 |