I have a 2011 MC and today I parked it for 2 hours, got back in and there's no sound from the audio system. The screen display works normally, but nothing from radio, sat, ipod or bluetooth. I turned off the radio for a length of time while driving the car and even turned the car off/back on and still nothing. Any ideas????

 

Might be your bluetooth...have the dealer check it out. I read somewhere else on here that they were having the same issue and they had to replace something to do with the bluetooth.

 

Thanks for the info, I'll give them a call.