I have a 2004 c230 kompressor, the radio makes a double beep several times and then there is no sound, i turn the radio off and then on again and it works for a few minutes, then it starts with the double beep again, any ideas what could it be? thanks.

 

I have the same car as you. It only happens to me when the cassette door is left open. If you has a cassette check to seeit is closing properly.