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Why is my m3 battery not charging ? - 2003 BMW 330

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It is a fairly straight forward process... here is a link to a page with written instructions as well as a video Enjoy BMW E46 M3 Battery Replacement chrisparente com

May 21, 2014 | 2002 BMW M3

1 Answer

Where is the battery located in a 2005 bmw m3

It should be in the trunk, passenger's side right quarter panel under a black plastic tray that holds the lug nut wrench.

Jul 26, 2011 | 2005 BMW M3

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I just replaced the barrery in my m3. it started up fine but the battery light is still on. I ran the car for about 30 min cut it off and tried to start it again and the battery was not starting the...

Hi brinkslawn,

Sounds like you may have an alternator issue. If you have a voltmeter, check for approximately 13.2-14.0volts at the battery.

Jun 26, 2011 | 1997 BMW M3

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Runs fine for a wile then dies battery drained

A car battery can run down for any of several reasons:
  • You accidentally left the lights on or some other accessory that pulls power from the battery even when the ignition key is off.
  • The battery is not being recharged while the vehicle is being driven (you have a charging problem)
  • There is a key off parasitic electrical drain on the battery because a relay is sticking, a module is not shutting down, or there is a shorted diode in the alternator.
  • Your battery is old and will not hold a charge anymore. The battery needs to be replaced.
Most of the time if the battery is fairly new and keeps getting drained have the mechanic check the alternator if its charing the battery.
Thanks for using Fixya.

Mar 14, 2011 | 1998 BMW M3

2 Answers

Recently i bought bmw z3 model 2001 battery was bad .after changing the battery i get the code on the radio. please help

I just did this yesterday for an M3...
pull the stereo out of the dash far enough to read the serial number... call the dealership and they will look it up free of charge and give you the code... write it on the radoi for future reference...

Sep 25, 2010 | 2000 BMW Z3

1 Answer

2005 BMW M3 battery not holding charge, intermittently dead

install a battery tender this will mantain the voltage in the battery these work great and will not harm battery or car
  • Mar 24, 2010 | 2005 BMW M3

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    Own a 2005 BMW M3, car battery draining -battery less than year.

    From what you're saying here, I believe that you simply have a bad battery. Most batteries only last 5 years, much less if they're left to sit in storage periodically. You really should charge the battery overnight and do a load test on it the next day. The person(s) you spoke to at BMW were probably sales staff and not actual technicians. Costco has very good batteries at reasonable prices.

    Mar 24, 2010 | 2005 BMW M3

    1 Answer


    sounds like the voltage regulator in the alt. is bad i would start be changing alt.

    Feb 18, 2010 | 2002 BMW M3

    1 Answer

    Battery light came on, changed alternator, light comes on during high revs. battery only a yr old

    You will need to go to a shop,have the out put checked,it is supposed to be 13.65 volts,to 14.25 volts out put at the battery.If it is over this,the voltage regulator is bad.The voltage regulator is in the computer.This is allowing the alternator to over charge.But make sure the belt is not slipping.

    Jan 09, 2010 | 2002 BMW M3

    1 Answer

    1999 bmw 528i replaced battery and alternator after a few hours driving asc,abs,and transmission light come on transmission stops pulling. If shut of and try to restart the battery is dead. if charge...

    Replace your battery when its being tested there not testing it under a heavy enough load. A battery could have a dead cell in it and still show good on the charger. I've had that problem a few times.

    Jul 07, 2009 | 1999 BMW M3

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