| Issue ID | 969603 |
| Internal NHTSA # | 10502997 |
| Manufacurer | Chrysler Group LLC |
| Brand | JEEP |
| Model | GRAND CHEROKEE |
| Model Year | 2009 |
| File date | 11/03/13 |
| Component | UNKNOWN OR OTHER |
| Product type code | VEHICLE |
| Description of the problem | Driving 2009 jeep grand cherokee on highway at 65 mph. Right front tire instantly went flat preceeded by a low tire pressure indicator. Auto club installed spare and noted that the tire valve (tire pressure monitor wheel sensor) was gone. Tire dealer checked tire (now damaged beyond repair) and found the pressure sensor fell into the wheel because the threaded nut that holds the sensor in place failed and separated from the wheel while driving. Inspection of sensor assembly showed clear evidence of severe corrosion to the threads which allowed retaining nut to separate at highway speeds. Inspection by tire dealer of all other wheels showed similar condition. Vehicle is regularly maintained by jeep dealer shops, driven primarily in ny state. This issue is worse than driving on low pressure tires as it occurs catastrophically. The tire pressure monitor sensor on the vehicle is 100% oem (no dissimilar metals in use). Cannot believe there is no indication from manufacturer of this defect or suggested preventative actions. |
| Vehicle Mileage at Failure | 65300 |
| Number of Occurences | |
| Source of the issue | PORTABLE SAFETY COMPLAINT FORM (PDF) |
| City and State | NISKAYUNA, NY |
| VIN pattern | 1J8GR48K79CXXXXXX |
| 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 | 65 |
| 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 |