Mercedes: Wipers on ML350 2003, radio interference, go radio

Question
I own a 2003 ML350. 2 years ago my radio started acting up, by this I mean the volume would break up while playing. I took it to a Mercedes dealership and they said it was the radio. Replaced the radio and within a week the new one did the same thing. Again Mercedes dealership said was just another bad radio. A few weeks a go radio started breaking up volume sound again but stopped. Now when I turn wipers on SRS light and airbag light come on but eventually goes off. Wipers will not work now when I turn them on. Radio also goes off when I turn wipers on. When I turn wipers off radio comes back on. I think it is an electrical problem and the not a radio or wiper issue. Is there a command center for these functions that could be going bad?

Answer
Evelyn
I suspect that the wiring harness for the audio system has a loose connection. The wiring system on vehicles today are very sensitive  to radio interference. Your system may have a surround sound system with separate amp, and it may be this component that is at fault, or some of the wiring to the individual speakers. The fact that you are getting cross talk between accessories indicates that there is a bad connection somewhere.
Sorry I cannot be more specific.
I would try and locate a very reputable independent auto audio installer and just have a talk with them about your issues.
It would be very easy to just try and through parts on a charge and replace basis, without really determining the cause first.

Just remember that in the real world if your name were Max, or John, you would have more clout at a repair shop or dealer. Sorry...

You may want to check out the www.benzworld.com/forum   website and post your questions there. I have had excellent results there.

Best of Luck
Robert