Hello, the Comand system in the W251 from 2007 has recently increased listening to sound oscillations on the radio or playing CD, then the sound comes back and stays away again. It started with TV reception on reverse gear. The function Map hangs now as well. The car has in the Fond TV DVD system of MB. When I arrived with the problem of TV reception on reverse gear, the friendly meant it is on the control unit of Comand, costs 2,500 EUR, without exchange! I asked him if e r could connect a new control unit to try out that it really is because he meant that once the packaging is on, you have to pay it. I confronted him with it, where does the realization come from without a mistake being read out, maybe it is a cable break or something else, he has not had an answer. Does someone have a hint what it might be about, if necessary, where can they repair it cheaply? Otherwise it is a class family car.