Problem fix by dealer
If you have power to your radio and it still dont work. It could be the water leaking in to your car. Usually when you drive too much over time the drain tube sift and water leak in to ur passager side or back door. Check if ur floor mat is wet. Bmw strip down my right side doors and found that the ibus wire is damage from the water leak. That the wire that connect the system thru the engine and awp and so on. They had to change the wire and fix the water drain tube. Dont bring it to the dealer cost me 5 hour labour $750.