4 years ? Still broken ?? Have you disconnected the battery for 5 mins (disconnect earth only (brown wire) ? What is your car (I think you say its a S211).
4 years ? Still broken ?? Have you disconnected the battery for 5 mins (disconnect earth only (brown wire) ? What is your car (I think you say its a S211).
I suspect the button on the COMAND is broken. But it is *very* strange that this occurred at same time as changing the aerial. I assume you have COMAND with Nav Drive in the boot. If it is Audio-50-APS then the antenna would have connected to the head-unit and I guess could have got broken when unit removed ?