2009 Mercedes-Benz C300 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2009 Mercedes-Benz C300
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
2009 Mercedes-Benz C300 ProblemsCracked Driveshaft Flex Discs May Cause Driveshaft Movement/Vibration
A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.
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.
Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).
2009 Mercedes-Benz C300 Questionsmy car does not start and it just makes like a click sound, what can it be ? (1 answer)
A day before it didn't turn on I had to turn the key more than usual, and usually my car turns on right away when I put the key and turn it a little but today it just didn't turn on! What can it be?
urethane overspray covering entire vehicle
2009 Mercedes-Benz C300 RecallsPassenger Frontal Air Bag Inflator Ruptures On Deployment
The passenger frontal air bag inflator may rupture on deployment, causing metal fragments to come through the air bag and injure occupants. Dealers will replace the passenger frontal air bag module free of charge to resolve the concern.
The driver's frontal air bag inflator may deploy the air bag with excessive pressure, resulting in the inflator rupturing and causing metal debris to be sprayed onto vehicle occupants. Dealers will replace the driver's frontal air bag module free of charge to resolve the concern.
The air bag control unit may corrode and cause it to malfunction, resulting in air bags that deploy when not intended, or do not deploy at all in an accident. Dealers will inspect and replace the air bag control unit as needed free of charge to resolve the concern.