Shoushball14

Hey guys, I bought an S class 2007 5 months ago, everything was fine until one cold morning, the audio started to cut off on me. At first i thought the problem was a bad cd. Changed cds, but it seemed that it didnt fix the problem. About the 2 min mark, the sound would just stop, then if i press mute sound, then press mute sound again the music continues. Weird ?????? Until 2 minutes later when it stops and i have do it again. However radio is not affected, neither is aux audio. BUT, same happens with bluetooth phone, sometimes the person hears me, sometimes not, sometimes it cuts off in the middle of conversation. Dealer checked the problem, did update of comand, nothing changed. Then he told me i would need a whole new comand system. It is around 5000$$$. Then after this i realized the button of voice comand on sterring wheel doesn't work anymore either. Anyone has had these issues? Will thank you very much for advice. Ilian.