Mercedes Benz CLS550 owners have reported 9 engine and engine cooling related problems since 1996. Table 1 shows the 7 most common engine and engine cooling problems. The number one most common problem is related to the vehicle's engine oil leaking (3 problems). The second most common problem is related to the vehicle's engine clicking and tapping noises (1 problem). For details of each of the problem category, use the links in the table.
Cam link sensor leaks oil onto engine harness, frying all electric components, causing vehicle to stutter while operating Read details...
Every time I fill up my tank with gasoline, once I park in the garage, the garage is filled with strong gas fumes from my car. I checked for leaks under the car and found nothing. I have to raise the garage door to let the fumes out, due to getting lightheaded from the fumes. Read details...
Bought this certified Cls550 from keyes european mercedes in van nuys,CA on 11/23/2009 with 42000 miles as soon as I got the car home I noticed the fan was overly loud and my temperature gauge was reading 110. Called dealership they said fan motor on these cars are all extremely loud and temp. Read details...
Catastrophic failure with sudden loss of power and inability to proceed at more than 20 mph. It has now recurred twice and vehicle flatbedded to agency. Has been in shop for six days with no repair. Service manager denies that this is the second failure because his diagnostics were unable to Read details...
When started and for some period after warm up the engine fuel injectors rattle. The dealer mechanic claims that this is the result of the split rail system installed on the engine. This makes the motor appear to be knocking as the noise is loud. I have reported it several times since 2017. Read details...