2001 BMW 323i

Battery keeps going dead over night. Are there any well known location of the
problem.
I have ruled out Battery connections, alternator and common sense areas?
Need your help.

mtyjoe wrote:
> Battery keeps going dead over night. Are there any well known location of the
> problem.
> I have ruled out Battery connections, alternator and common sense areas?
> Need your help.

How old is the battery? Have you considered replacing it?

Check for something electric that may be staying on. Trunk light, perhaps?
Radar detector? Turn the car off and open all doors, hood and trunk and look
for a light(s) that shouldn't be on. Maybe an audio amplifier? Powered
subwoofer? I've done that one!


"bfd" > wrote in message
oups.com...
>
> mtyjoe wrote:
>> Battery keeps going dead over night. Are there any well known location of
>> the
>> problem.
>> I have ruled out Battery connections, alternator and common sense areas?
>> Need your help.
>
> How old is the battery? Have you considered replacing it?
>

"sgfan3" > wrote in message
...
Check for something electric that may be staying on. Trunk light, perhaps?
Radar detector? Turn the car off and open all doors, hood and trunk and look
for a light(s) that shouldn't be on. Maybe an audio amplifier? Powered
subwoofer? I've done that one!


"bfd" > wrote in message
oups.com...
>
> mtyjoe wrote:
>> Battery keeps going dead over night. Are there any well known location of
>> the
>> problem.
>> I have ruled out Battery connections, alternator and common sense areas?
>> Need your help.
>
> How old is the battery? Have you considered replacing it?
>
-----

Had this problem before.
Disconnect the battery on one side and connect a voltmeter to bridge the gap
from the battery to the cable.
Start pulling fuses to see when the voltage drop stops. (be logical about
this step)
It's safe to have the fuse diagram handy to get the right amp fuses where
they go.

Mine was a radio that was in "stand-by mode" instead of "off". I just popped
the faceplate loose each time I left the car and it was fine.

Bill in Omaha
86 535i

In article <XRuCg.2854$uW1.572@dukeread06>,
Bill > wrote:
> Disconnect the battery on one side and connect a voltmeter to bridge the
> gap from the battery to the cable. Start pulling fuses to see when the
> voltage drop stops. (be logical about this step) It's safe to have the
> fuse diagram handy to get the right amp fuses where they go.

Some devices are always 'live' on a modern car, so this test wouldn't be
conclusive. Use an ammeter and look for a total in excess of about 50mA
which is the normal 'resting' current. Anything which takes out a good
battery overnight will be drawing several amps and this isn't normal.

--
*Ambition is a poor excuse for not having enough sense to be lazy *

Dave Plowman London SW
To e-mail, change noise into sound.

Bill wrote:
> "sgfan3" > wrote in message
> ...
> Check for something electric that may be staying on. Trunk light, perhaps?
> Radar detector? Turn the car off and open all doors, hood and trunk and look
> for a light(s) that shouldn't be on. Maybe an audio amplifier? Powered
> subwoofer? I've done that one!
>
>
> "bfd" > wrote in message
> oups.com...
> >
> > mtyjoe wrote:
> >> Battery keeps going dead over night. Are there any well known location of
> >> the
> >> problem.
> >> I have ruled out Battery connections, alternator and common sense areas?
> >> Need your help.
> >
> > How old is the battery? Have you considered replacing it?
> >
> -----
>
> Had this problem before.
> Disconnect the battery on one side and connect a voltmeter to bridge the gap
> from the battery to the cable.
> Start pulling fuses to see when the voltage drop stops. (be logical about
> this step)
> It's safe to have the fuse diagram handy to get the right amp fuses where
> they go.
>
> Mine was a radio that was in "stand-by mode" instead of "off". I just popped
> the faceplate loose each time I left the car and it was fine.
>
> Bill in Omaha
> 86 535i

I thought these models were designed so that the car goes to "sleep"
after a certain period of being shut off? I had on occasion left a
light on in my e46 and never found the battery to be dead. I would
think that you still have the original battery and it is time for a new
one!