I have a 2000 S500, my car only overheats while driving , if I leave it at idle , the car returns back to normal operating temp. I have replaced the radiator, water pump, thermostat , upper and lower hoses, and the duo valve . I have vacuum filled the car each time, and still the issue continues. I was told to check the coolant for combustion gases which I have done, and they are not present, my fans work and turn on , so at this point I’m stuck with a car that I can leave sit but can’t drive.... any help would be great

 

How has no one responded to this post in over 4 months?

 

you got the same problem?