i have the above mentioned car and the other day when i tried to start it the idrive mentioned airbag and restains systems fault. after i scanned the car with the Bosch - KTS 570 and i erased all the errors that came out.
still 93f9 power reserve voltage supply error comes up and cannot be deleted.
any idea what is the problem and which part do i have to change? do i have to change the airbag ecu?
Thanks in advance guys