2010 Mercedes-Benz S550 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2010 Mercedes-Benz S550

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2010 Mercedes-Benz S550 Problems

Oil Seepage on Back of the Cylinder Heads

The Mercedes Benz S550 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.

Stalling and/or "Crank no Start" Due to Failed Crankshaft Position Sensor

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.

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.

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2010 Mercedes-Benz S550 Questions

WONT CRANK (1 answer)

NEW BATTERY, WONT CRANK

Battery seems to not hold charge, had car checked at Mercedes dealer, (2 answers)

They said I needed to drive car at least 20 miles a day to keep battery charged Is that true. I can the car one day and the next it will not start.

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2010 Mercedes-Benz S550 Reviews

Rated
based on 1 customer reviews
2010 Mercedes-Benz S-550 with less than 3000 mi the solid torque strut brushings had to be replaced with hydraulic ones. My car has been in the shop 3 times with less than 5000 miles and the vibration still exist. Mercedes knew the problem existed with no solution yet have not disclosed the problem the public or some of their employees. My car is not worth $100,000 with the existing problem a...

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