| Issue ID | 1271462 |
| Internal NHTSA # | 10851824 |
| Manufacurer | Hyundai Motor America |
| Brand | HYUNDAI |
| Model | SONATA |
| Model Year | 2013 |
| File date | 04/03/16 |
| Component | SERVICE BRAKES |
| Product type code | VEHICLE |
| Description of the problem | Vehicle was not used for about 4 weeks in february. Then the car was started in reverse with the foot on the brake pedal. Pedal went mushy with little to no pressure resulting basic loss of brake function while making loud noises. Had to stop vehicle with parking brake. Had vehicle towed to dealer. Service manager drove vehicle, acknowledged the problem, and indicated that rust had accumulated on rotors. He said high/low spots due to rust can result in loss of brake pressure, and loud noise was a result of brake pads rubbing on uneven surfaces. After dealer technician drove several miles and applied brakes, rust wore off and brake function returned. The dealer service manager said the car should be driven every couple days or at least once a week to prevent this from happening. He indicated he could turn the rotors but the rust would just return. I have never owned a vehicle in 30 years where the rotors are so prone to rust resulting in brake failure if not driven for 4 weeks, much less a week. Thankfully this was not noticed at higher speed on a road or this was an accident in the making. I believe there could be a rotor material design or quality issue that is promoting corrosion at such a rapid rate. Dealer's invoice is attached for reference. |
| Vehicle Mileage at Failure | 21085 |
| Number of Occurences | |
| Source of the issue | NHTSA WEB SITE |
| City and State | NORTHVILLE, MI |
| VIN pattern | 5NPEB4AC7DHXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | N |
| 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 | 5 |
| 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 |