| Issue ID | 923933 |
| Internal NHTSA # | 10461161 |
| Manufacurer | MERCEDES-BENZ USA, LLC. |
| Brand | MERCEDES BENZ |
| Model | C230 |
| Model Year | 2007 |
| File date | 01/03/11 |
| Component | VEHICLE SPEED CONTROL |
| Product type code | VEHICLE |
| Description of the problem | I purchased my 2007 mercedes c230 in approximately february 2011 from carmax in roseville, ca. Within six weeks, i was driving on a local freeway when i experienced a loss of acceleration power yet the engine was running a over 4000 rpm. I returned to the carmax dealership to report the engine problem, but the dealership could not recreate the problem, which repeated itself intermittently in the following months. In december 2011, i took the car to a local mercedes specialist for a service b; upon examination, the specialist advised me that the car had not received a 60,000 mile service b, including a transmission service, and asked if the car had exhibited the power loss and high rpm. The specialist informed me that a mercedes service bulletin advised of an incompatibility between the metal material of the transmission and the original factory fluid, which causes a shearing problem and build up on the transmission shifting sensors. The specialist recommended and performed a service of flushing & replacement of the transmission fluid with a newly formulated, mercedes recommended fluid. Immediately following the service and fluid replacement, there were fewer incidents of power loss. In recent weeks, six months after the transmission service, the issue of power loss has re-occurred frequently, multiple times per week, multiple times per day, many times on the freeway at speeds of 55-65 mph, requiring me to pull to the shoulder of the freeway to turn off the car an allow to reset before re-entering the flow of traffic. This loss of power and transmission control while driving at freeway speed is a great safety concern to me. |
| Vehicle Mileage at Failure | 59000 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | SACRAMENTO, CA |
| VIN pattern | WDBRF52H87FXXXXXX |
| 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 | 0 |
| No. of fatalities | 0 |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | 6 |
| 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 |