Car does not start

My 2010 535xi did not start last week. It worked fine for over 22K miles without any problem. The car started with jump and was taken to the dealer. They tested and kept it over the weekend and did not find any thing. Service manager suggested battery might have drained. Took the car out, drove 20 minutes and parked at office for 2 hours and car did not start again. It is back to dealer after starting with a jump. Please advise if someone knows what could be wrong with the car.

Do you have comfort access? Could be one of the door handles malfunctioning...

Yes, it does have comfort access but the doors are functioning fine and did not seem to have any problem. The service tech checked it also.

Do you have the automatic ventilation set to come on? That ran down our battery.

Ralph

bQUOTE=CERN;7184678]Yes, it does have comfort access but the doors are functioning fine and did not seem to have any problem. The service tech checked it also.[/QUOTE]

From what I understand, the handle can work perfectly fine, but still become a parasitic draw on your electrical system. Your dealer will have to track down the draw with a multimeter through the fuse box.

Something drains your battery while parked. The car does not go to sleep mode.