2004 E320 Radio cutting out
 

My wife has a 2004 E320 wagon with very low miles. Today the radio cut out twice while she was driving it and she had to turn off the engine then restart the car for the radio to work again. She said that right before the radio went dead there was a lot of static on it then it goes dark/no sound. Any ideas what could be causing this problem and any "home fix" solutions for it ? Thanks Desert