| Issue ID | 1594134 |
| Internal NHTSA # | 11245382 |
| Manufacurer | Hyundai Motor America |
| Brand | HYUNDAI |
| Model | SONATA |
| Model Year | 2012 |
| File date | 15/08/19 |
| Component | VEHICLE SPEED CONTROL |
| Product type code | VEHICLE |
| Description of the problem | Driving at interstate speeds, will down shift and drastically lose speed while in blue mode. No warning lights of any kind. No apparent issue at lower speeds. Engine does not rev up high because of rev limits. Drops from 6 gear down to 4 gear quickly loosing speed. Leading to impedance of traffic flow. A couple of time this happened when merging on to interstate. Had to ride on side to next exit. I have learned if i go into sport shift mode i do not experience this issue. I have taken to dealership, but unable to repeat issue on test drive. They did a diagnosis and cleared some history codes but it did not help. Again this happens unexpectedly. |
| Vehicle Mileage at Failure | 123945 |
| Number of Occurences | |
| Source of the issue | NHTSA WEB SITE |
| City and State | WATERLOO, IA |
| VIN pattern | KMHEC4A44CAXXXXXX |
| 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 | 70 |
| 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 |