2012 Mercedes-Benz E550 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2012 Mercedes-Benz E550

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2012 Mercedes-Benz E550 Problems

Oil Seepage on Back of the Cylinder Heads

The Mercedes Benz E550 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.

Squeaking/Worn Brake Pads May Require Rotor Replacement Also

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).

Failed Gateway Module May Cause Lack of Audio/Cell Phone Functionality

Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.

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2012 Mercedes-Benz E550 Recalls

The Right Side Curtain Airbag May Not Properly Deploy

Certain vehicles were assembled with a right side window curtain airbag that was stitched together improperly. In the event of a crash, this airbag may deflate more quickly than intended, reducing the protection it may provide to vehicle occupants. Mercedes-Benz dealers will replace the right side window curtain air bag on affected vehicles to correct this concern.

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2012 Mercedes-Benz E550 Reviews

Rated
based on 1 customer reviews
Rotors replaced at 10K of normal driving. No warning light indicating brakes were compromised. Dealership initially blamed us for driving down steep declines (we don't). It was covered under warranty. We have really enjoyed this 2012 E550 Coupe, especially with it's cool little V-8. You can't brake out of every traffic situation, sometimes you need responsive acceleration, and it has it to spar...

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