Re: E30: Battery Drain

[Deividas Rimkus <deividas_r@xxxxxxxxxxxxx>]

Tony,

I had a similar problem with my E30. It turned out that trunk lid was a
little bit loose and the light in the trunk was constantly on. Adjusting
the trunk latch solved the problem.

You can try to connect an ammeter in sequence with your battery and pull
the fuses out one by one to see which one stops the drain. Then check
all devices protected by that fuse. If everything is OK but you still
got the drain - you might have a short (or worse - intermittent short)
in wiring, which is very hard to find.

Good luck
- --
Deivis
'88 325

> Date: Thu, 15 Nov 2001 11:56:58 -0500
> From: "Tony Lin" <tonyplin@domain.elided>
> Subject: E30: Battery Drain
> 
> Hi Folks-
> 
> Can anyone suggest some possible reasons for a slow drain of current from my
> battery when the car is off?  Clock?  Those silly idiot lights and their
> rechargeable batteries?
> 
> It's a brand new battery in the car- I just replaced a 1yr-old one which was
> under warranty.  Apparently the old battery drained down to nothing after
> the car was parked without driving for periods of a few weeks.  The new
> one's  showing a 14hr overnight drop from 12.2v to 11.8v.  At this rate, 3-4
> days of not driving will drop the battery to below cranking voltage.  I
> can't think that it's just another bad battery.
> 
> Tony
> 
> 85 318i

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