2010 Mercedes-Benz C300 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2010 Mercedes-Benz C300

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2010 Mercedes-Benz C300
$
74
to $
139
2010 Mercedes-Benz C300
$
191
to $
374
2010 Mercedes-Benz C300
$
201
to $
422
2010 Mercedes-Benz C300
$
412
to $
835
2010 Mercedes-Benz C300
$
429
to $
838

2010 Mercedes-Benz C300 Problems

Oil Seepage on Back of the Cylinder Heads

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.

Cracked 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.

ABS Modulator Failure Due to Dirty Brake Fluid

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.

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2010 Mercedes-Benz C300 Questions

Engine malfunction indicator On. Diagnostic code PO456. Some time it noticed that fuel dripping right rear tire area and sometime smell gasoline out side of car. how can I fix? (1 answer)

Sometimes my C300 does not start, when I insert the key fob (2 answers)

do I have to press the brake pedal for my car to start? Am I having problems with my key fob sending a start signal to the engine?

My Sport mode button in stuck in comfort mode and when i press it nothing happen (1 answer)

Just noticed this yesterday. My car will not go into sports mode...only comfort. I've tried pressing the button and nothing happens. What could be the problem? I like the sports mode and feel im being cheated not being able to drive in sports mode.

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2010 Mercedes-Benz C300 Recalls

Passenger 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.

Driver's Frontal Air Bag Inflator Ruptures And Sprays Metal Fragments

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.

Tail Lights May Dim Or Fail

The tail lights of the vehicle may dim or fail because of a poor electrical ground connection. Dealers will replace the bulb holders if not previously updated and replace any corroded connectors free of charge to resolve the concern.

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2010 Mercedes-Benz C300 Reviews

Rated
based on 2 customer reviews
Traded wife's BMW 328 for a 2010 C300 with 24000 miles. Have had it 8 months. It has been back to Mercedes 3 times with loss of all power steering fluid, twice in last two weeks. Dealership can't fix problem and charge $300 - $450 each time. Not enough dealerships in the Nashville area to service cars they sell. Impossible to schedule service times unless the vehicle is towed in. First and...
I traded my BMW 325i for the new C300. Very impressed with the quality and comfort. Like the easy access to the engine. BMW was like doing open heart surgery. Everything was crammed under the hood. The new C300 is a gorgeous car with a solid feel. Absolute dream to drive. BMW was fun, but I had a 5-speed:) The BMW cost to maintain was outrageous! I'm hoping the new C300 will be more reliable. T...

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