Five problems related to vehicle speed control have been reported for the 2006 Mercedes Benz C230. The most recently reported issues are listed below.
While driving on a city street in stop and go traffic, I noticed that the car was not shifting gears. The tachometer would rev high but the vehicle would not accelerate in accordance with the revolutions. Once traffic freed up from a stop and go 20 mile/hr the car would not shift gears and remained in limp mode. I brought the car to my mechanic who confirmed it was a transmission problem. The current quote to replace the 7 speed 722. 9 transmission is $2800 parts and labor.
Moments after exiting the freeway and reducing speed at around 35 mph my car did not accelerate and continue as it would in neutral. Family in the car panic and for my fortune light traffic on an usual busy street. The check engine light did not turn on at the moment of days after the incident. A week later without a warning the vehicle engine light turn on and lost speed in the freeway. This incident could easy cause my family and other drivers a fatal accident and preventable injuries. I have found many similar incidents describing what happen to me and its awful that nothing is being done to fix it. I will contact my local representative and senator to demand action and a formal investigation about this issue.
On Nov 27, 2013, I was in the los angeles area on highway 14 traveling around 70 mph on the highway w/ many cars and my speed dropped to around 50 mph in spite of my foot downing the accelerator to the floor. I had to turn on my emergency lights and move over to the slow lane for safety. Returning home that same day on the same freeway, the car would not accelerate or transmission would not downshift to compensate for the uphill on the freeway in spite of stepping down on the accelerator- again I had to flash my emergency lights on and move to the slow lane. There is no sensor light on the dashboard for both incidents. My mechanic reported it will be hard to diagnose the transmission problem since there is no sensor light on. On Nov 29, 2013, I traveled to las vegas and the transmission repeated the decelerating incident and failure of the accelerator to increase engine or transmission speed. This is dangerous.
Suddenly during normal driving conditions, when trying to accelerate the car is very sluggish and the rpm are very high. This happens without warning increasing the potential for a crash. The problem is normally rectified temporarily by restarting the vehicle.
I was driving my vehichle on the highway during morning rush hour when I noticed that the car would not accelerate over 35 mph. I moved the car off the highway and stopped at a red light. Once I stopped the car it would not accelerate at all when I stepped on the gas. I had to put the car in park and then move it back to drive to get the car to move. The car would jump and luch forward when I shifted gears. I drove the car dircetly to the dealer. The mercedes dealer told me that there was a problem with the software and that the software would need to be updated. I went to pick up my car after the "software " was updated ($1,700 cost) and drove the car about 10 miles when I noticed that the check engine light had come on. I took the car back to the mercedes dealer to let them know the check engine light was now on. The mercedes dealer told me I have a defective balance shaft that needs to be repaired. The mercedes dealer ask me if I had kept up the oil changes on the car. I told the them that I had. The mercedes dealer told me that I have to pay $2,500 just for them to take the engine apart and that the total repair will cost around $6,000. I just purchased the car in July 2010 ( 14 months ownership) with about 19,500 miles on it.
| Vehicle Speed Control problems | |
| Speed Sensor problems |