I have a 2000 328ci (which I might think about selling). I noticed the AC fan in front of the engine was running when I turned the car off. I though it would eventually turn off but when I tried to open up my doors in the morning my battery was dead.
I attempted to jump it. Once I attached the jumper cables the fan started running again I let the battery charge for like 20 minutes and tried to start it. Nothing.. turned the key and click click.
I think it maybe the starter or the AC sensor. I disconnected the AC Fan and still nothing. I know I need a new battery now but don't know why it won't start.
Appreciate any help available.