When I open the door their is no power but when I put the key in the ignition to start it I get power and the car starts. But it eventually does the same thing. Tha car is just siting when it does this. I have already had both batteries replaced. One is used and the other one is new. I had a new stater put on also. What could be the issue with what it seems to be a battery issue or connection issue.
What causes power loss when the car is not running? Both batteries replaced on 2001 BMW 750iL
Asked by for the 2001 BMW 750iL
are the cables very clean and i would suspect poss the used battery is not holding a load.have it load tested to be sure