Mercedes-Benz S550 4MATIC Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Mercedes-Benz S550 4MATIC
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Mercedes-Benz S550 4MATIC ProblemsTransmission May not Shift into Drive Due to Failed Selector Module
The transmission drive selector module may fail resulting in the loss of gear selection capability. This condition can leave the vehicle stranded, and will require replacement of the drive selector module.
The Mercedes Benz S550 $Matic 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.
Mercedes-Benz S550 4MATIC QuestionsHello,im really thinking about buying a 2007 S550 4 matic Mercedes-Benz with 100,000 miles,in your opinion is the car worth buying and if it is should i also purchase an extended warranty??? Thanks in advance... (1 answer)
I have to open the hood and bang on the computer if the car won't start and I've been to the mechanic for this issue over and over and same results. I entered the car today and it wouldn't start I had to open the hood and hit the computer and then the car started up.
Mercedes-Benz S550 4MATIC RecallsLow Beam Headlights Not Adjusted Properly
The low beam headlights may be out of adjustment. Dealers will inspect and correct the headlight adjustment as necessary free of charge to resolve the concern.
The front seat belts may be installed in reverse locations; the left side belt may be located on the right, and the right side belt may be located on the left. Dealers will inspect the installation and correct them as necessary free of charge to resolve the concern.
Due to a manufacturing defect, a crack can develop on the fuel filter when the vehicle is operated in high temperatures. This crack can result in a fuel leak, increasing the risk of a fire. Dealers will replace the fuel filter to correct this concern.