Originally Posted by finn1969

I wasn't aware of the two push button thing with my wifes 128I Conv. She would park it in the garage and sometimes not lock the door which would leave the accessories on (we have comfort access). We also had a passenger window fault that kept power in the accessory mode. Bottom line is we had to pay $425 for a new battery because of operator error (yes $425 for a BMW battery). NOW she locks the car when parking, problem solved.