Mercedes-Benz CLS550 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz CLS550

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Mercedes-Benz CLS550
$
93
to $
372
Mercedes-Benz CLS550
$
182
to $
318
Mercedes-Benz CLS550
$
238
to $
671
Mercedes-Benz CLS550
$
254
to $
909
Mercedes-Benz CLS550
$
949
to $
3,119

Mercedes-Benz CLS550 Problems

Oil Seepage on Back of the Cylinder Heads

The Mercedes Benz CLS550 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.

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).

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Mercedes-Benz CLS550 Questions

mileage 30000 Automatic i shift gear for reverse or drive, face jolting motion (1 answer)

Dear Sir,

My parking space is inclined surface.
I have to park head up or head down?CAR model CLS 350.I stored my car in yard for the last 1 year.Use rarely.When i switched off engine and restart again,no jolting.This problem will face again or have a big issue?or to change the sensor?Please ...

How much to replace the back bumper assembly (1 answer)

I would like an estimate on replacing the back bumper assembly for a CLS500.

What would cause a vibration that seems to be a cabin area vibration. (1 answer)

When I drive the car, starting at about 35 to 80 mph, I get a harmonic cabin vibration for about 35 - 40 miles. It even happens on a newly paved 6 miles stretch of brand new highway. It begins to dissipate the further I drive. On my way home I get no vibration or its very faint no matter the ro...

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Mercedes-Benz CLS550 Recalls

Rubber Engine Compartment Seal Falls Off

The rubber seal that surrounds the engine compartment may become dislodged from the bulkhead area, and fall into the engine compartment. Dealers will replace the rubber seal free of charge to resolve the concern.

Tail Lights Do Not Light On The Sides

The tail lights may not light up on the sides, which can make it difficult to see the vehicle. This fails to comply with federal safety standards. Dealer will update the lighting controller software free of charge to correct the problem.

Rubber Seal Under Hood Detaches And Causes Fire Hazard

A rubber seal at the back of the engine bay may stick to the hood and then fall into the engine compartment, possibly contacting hot exhaust components and causing a fire hazard. Dealers will attach additional retainer clips to the rubber seal free of charge to resolve the concern.

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Mercedes-Benz CLS550 Reviews

I love my 2008 Mercedes CLS. It does everything I need it to do and serves as a great daily driver. I bought it used in 2011 and have had great luck with it on repairs to date.
This is my first and VERY well deserved Mercedes. I LOVE EVERYTHING about this car and what a great first choice, like they say go big or go home. Amazing looks, style, performance and handling. I am satisfied above and beyond my high expectations. The next step will be the 2011 CLS AMG63.
ilove my 2007 MB CLS 550 amg sport package, although it requires alot of costly maintenance. i had to replace the timing belt and seal because of an oil leak. also, the fault codes im currently delaing with now which are 2768, 2767, 2783 relating to the transmission valve body and converter plate causing the car to stall out and not shift properly. other than those maintenace issues the car rid...

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