Mercedes-Benz CLS550 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Mercedes-Benz CLS550
Never overpay. Check prices with our estimator
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Our experts translate recalls into plain English
Mercedes-Benz CLS550 ProblemsOil 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.
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 CLS550 Questionsmileage 30000 Automatic i shift gear for reverse or drive, face jolting motion (1 answer)
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 ...
I would like an estimate on replacing the back bumper assembly for a CLS500.
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...
Mercedes-Benz CLS550 RecallsRubber 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.
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.
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.