| Issue ID | 794889 |
| Internal NHTSA # | 10335343 |
| Manufacurer | HYUNDAI MOTOR COMPANY |
| Brand | HYUNDAI |
| Model | SONATA |
| Model Year | 2011 |
| File date | 04/06/10 |
| Component | STEERING |
| Product type code | VEHICLE |
| Description of the problem | the car will not hold a straight line on a flat, straight, highway: after centering the car in it's lane, the car continuously and randomly: 1. Drifts away from the center line, toward one side or the other; 2. The direction of the drift appears to be random and unpredictable; 3. The amplitude (amount / severity) of the drift is random and unpredictable, but at highway speeds a crash would be guaranteed without driver intervention within 3 to 5 seconds; 4. The timing of the drift pattern is constant: it never follows a straight line for more than a few seconds before starting to wander again. To avoid a collision with oncoming traffic, the driver is forced to constantly attempt to correct for this deviation, but the unpredictable nature of the drift pattern results in a dangerously unstable oscillation as the car wanders back and forth continuously. At highway speeds, even a momentary lapse in the total concentration required to correct for this constant steering drift could easily result in a fatal crash. The dealer has test-driven the car and found that the problem is easily duplicated, but they do not have a fix for it. They say that this kind of steering drift is normal and expected in an electronic steering system. That kind of reasoning would be laughable if it wasn't for the potential fatality inherent in the design. |
| Vehicle Mileage at Failure | 35 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | PUNTA GORDA, FL |
| VIN pattern | 5NPEB4AC9BHXXXXXX |
| 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 | 60 |
| 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 |