Two problems related to check engine light on have been reported for the 2005 Mercedes Benz C230. The most recently reported issues are listed below.
I have been notified about the safety air bag recall however, I have just found oil in my wiring harness. My car is idling very rough and stalling, the check engine light is on, I received 8 codes. I have oil in my camshaft wiring harness, my piston 1 fuel inject, spark plugs, and front of the engine where camshaft adjuster magnets are covered in black sludge oil. Another mercedes owner told me the same thing happened to his car and was "pigtailed" there has been a recall on this issue for this type of car 2005 C230 kompressor sport the recall number is #200910001. I would like for the Mercedes Benz dealership to resolve this issue, I need a government letter to be approved. May you please assist me with this request?.
Problem starts with a hesitation upon acceleration and loss of power while driving. After shutting engine off, then upon starting vehicle, engine would start to shake and stumble. Check engine light would come on. Vehicle engine sounds as if it going to blow up and has no power and stalls becomes undriveable. If you shut engine off again and restart sometimes car can be driven even though check engine light remains on. It always shows the same codes for repair. Car has been towed to dealer 2 times and driven over 4 additional times. Each time the code comes up as a coil defect and dealer has replaced coil #2 several times due to coil being burnt along with cleaning and/or replacement of spark plugs only to have the problem recur within hours or days. They still have not been able to correct problem. Dealer gave me same model loaner vehicle which I had to return within hours due to same problems.