The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.
Resources for the Repair and Maintenance of your 2006 Mercedes-Benz C350 4MATIC
2006 Mercedes-Benz C350 4MATIC
2006 Mercedes-Benz C350 4MATIC Problems
The heating, ventilation and AC (HVAC) heater box is susceptible to mildew buildup. This can result in a musty odor from the HVAC system, most noticeable when the system is first turned on.
Irregular and premature tire wear can be caused by the front thrust link bushings cracking and causing excessive movement in the suspension. The thrust link bushings are fluid-filled (to help reduce vibration), so if they crack, they will leak oil.
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Catalytic converter failure is common and may cause a Check Engine Light to illuminate.
It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years in order to help prevent this problem.
2006 Mercedes-Benz C350 4MATIC Questions and Answers
After the car warms up you can smell (hot) from the drivers door back to the end of the car. All fluid levels are up, no flashing code or engine lights. Car still runs fine but you do have the hot ...
2006 Mercedes-Benz C350 4MATIC Reviews
I have owned it for about 8 months now, bought it with 20,500 miles and it now has 35,000. No problems yet, just some steering noise that I will have checked out.
Ride, performance, and quality have been great so far!