I seem to be having a problem with both my 2010 E 350 and ML350s. When on AM radio, the stations seem to be fading in an out and the sound gets lower and then louder. Is anyone else having these problems? I have not called service yet. I have a freind with a new ML 350 also experiencing the same issue. We live in Long Island so I dont think that where we live is creating a service issue. Anyone else with this issue?