2006 530i - High Battery Drain

"persist" > wrote in message
...
>I picked up the car from the port and the battery was dead.
>
> The dealer replaced the battery.
>
> Recently, it displays a warning: High Battery Drain. Car still starts
> but I'm guessing the battery is living on borrowed time.
>
> I have an appointment next week to get it repaired and I intend to ask
> for another new battery after they've diagnsed and repaired the source
> of the problem.
>
> Any ideas or experience as to what this problem could be?
>
> Have a problem with the universal garage door opener. When I initially
> programed it, it worked fine. Now it's opening and closing my other
> garage door.
>
> Appreciate any advice.
>
> --
> persist
It is most unlikely that two batteries would fail. It is much more likely
that there is a short somewhere that is causing excessive battery drain.

The old fashioned way to check would be to disconnect the battery. If there
is a spark on reconnection, there must be a short somewhere. You can also
measure the current with a VOM. The current with every thing off (you
cannot actually cut every thing off) should lie in the milliamp range.

On a new car, it is the dealership's job to find it. Wish them luck; these
things can be hard to locate.

Jim