| Issue ID | 828053 |
| Internal NHTSA # | 10365855 |
| Manufacurer | TOYOTA MOTOR CORPORATION |
| Brand | TOYOTA |
| Model | 4RUNNER |
| Model Year | 2003 |
| File date | 01/11/10 |
| Component | SERVICE BRAKES, HYDRAULIC |
| Product type code | VEHICLE |
| Description of the problem | 2003 toyota 4runner awd v8 with ~99,990 mileage. Front brake caliper inner pistons seized and inner front brake pads failed to apply for indeterminate time period (approximately 3 years and 30,000 miles). Heavy corrosion of caliper contact surfaces also prevented normal travel of oem replacement inner brake pads. Resulted in reduced braking force and intermittent brake pedal pulsation due to thermal imbalance of the rotors. Passenger side inner rotor surface corroded because no brake pad contact was occurring. Probably contributed to front wheel bearing premature failure due to unbalanced braking force on the brake rotors and inordinate torque on the bearing assembly. This vehicle has the original factory brake fluid (i. E., the hydraulic brake system has never been flushed.) this is a permanent failure of the braking system in this vehicle. Replacement of calipers is anticipated. Failed calipers could be made available for inspection but will ultimately be returned for core charge. |
| Vehicle Mileage at Failure | 99990 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | HUDSON, OH |
| VIN pattern | JTEBT14R138XXXXXX |
| 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 | 8 |
| Drive train type | AWD |
| Transmission type | |
| Vehicle speed | 0 |
| 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 |