Mercedes-Benz C300 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Mercedes-Benz C300
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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.
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).
Mercedes Benz C300 models manufactured between 2008 and 2012 may have engine oil seeping or leaking from the back of the cylinder heads. This is commonly misdiagnosed as leaking valve covers.
On the back of the cylinder heads there are three, in total, plastic expansion plugs that plug access ports to the camshafts. These plugs are well known for seeping oil, and leaking if left unattended. The oil will run down the back of the engine and eventually make it to the ground.
Replacement of these three plastic plugs is extremely simple, and should be done as regular maintenance. The recommended interval for replacement is every 60,000 miles.
Mercedes-Benz C300 QuestionsMy screen is black. But my radio works. Can't see anything to navigate (1 answer)
Screen is black. Radio works. Pushed the circle button behind vol. still black
Mercedes 4matic C300
But next day car would not start. Any suggestions on what the problem is? I have checked all fuses and ok so that not it. Also checked battery ok just replaced it in March of this year. I'm lost
Is this a good car?
Mercedes-Benz C300 RecallsElectronic Stability Control System Fails To Work
The electronic stability program control unit may have been damaged before being installed in the vehicle, which could prevent it from working properly while driving. Dealers will replace the electronic stability program control unit free of charge to resolve the concern.
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 panoramic sunroof glass may not be properly bonded to the vehicle, and may detach and fall while driving. Dealers will inspect the bonding of the rear sunroof glass panel and replace it as necessary free of charge to resolve the concern.