I have a 03 s 500 and recently the radio started going mute after a few minuets of listening and then coming back on at a low volume and the rear lights come back on after the car has been turned off and locked. My neighbors are ringing my bell telling me that I left the lights on.

The gas gauge stopped working today an I have a malfunction display signal. I'm very afraid of dealer electrical repair rates. Anyone ever experience any of these symptoms?