engine "hum" in cabin
I'm new to the W210 and I have a E430 Sport. Ever since I got it, I'm hearing a dull, low hum in the cabin while the motor is running. This occurs with or without the AC being turned on. Is this normal or do you think I have a problem? The hum seems to get more apparent as the engine temp goes up past 80 degrees.
Good Luck and welcome.
how many miles did you have on your car when you experienced this?


