I just purchased a certified pre owned 2006 CLS 500 with 40k. Ive had the the car for 5 days. When pulling it out the last time the car made buzzing noises from under the hood. At the same time I felt a vibration in the brake pedal. Immediately after I began to drive and the brake pedal needed slightly more effort to stop the car.

I took the car back to the dealer today and they said that the SBC unit which is part of the ABS system has a tendency to do that(seems awkward)...the noises I heard are apparently normal.

Has anyone else experienced this problem?

Also I have some moisture in the fog lamps? I don't think moisture in the lamps is normal, but the dealer said that when the lamps are on the extra moisture should just burn off.

Thanks for your input.

 

Hello i own a 2007 cls550 and i am a garage owner the buzzing sound and your pedal feel are not normal. That is an issue with the abs/traction control system in either the module being defective or a wheel sensor. Mercedes or a local garage could scan the abs system or if there are no codes, go on a live datastream to see which wheel sensor is defective.

As for your fog light there should be no condensation, the seem or seal sealing the fog light lense to the casing is no good.

Peter