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Thread: battery indicator light

  1. #1
    Join Date
    May 2007
    Location
    San Diego, CA,USA
    Posts
    61
    My Cars
    2003 BMW 525i

    battery indicator light

    so yesterday my battery was dead..I went a head and got a new one and put it in...started her up and it worked fine...on the way to work today, I noticed that the battery light was on?? since I placed a new battery in, does that mean I need to replace the alternator now, or does the light just need to be tuened off..does anyone know?

  2. #2
    Join Date
    Feb 2004
    Location
    TN
    Posts
    483
    My Cars
    97 528i AND 94 325i
    drop by Autozone, they should be able to tell you...easy test is to get a multimeter ($20 at Autozone) and measure voltage across battery terminals while running (should be around 13/14Volts generally)...pretty sure the light doesnt need to be reset, so probably something other than battery.

  3. #3
    Join Date
    Aug 2006
    Location
    Pittsburgh PA
    Posts
    2,737
    My Cars
    '98 540i/6, '00 Miata
    I would be very surprised if the light needs to be reset. I'm thinking alternator.
    Oxford Green 1998 540i/6
    BMWCCA No. 425591

  4. #4
    Join Date
    Sep 2005
    Location
    socal
    Posts
    9,971
    My Cars
    2002, 528i, LS430, RX330
    Maybe I'm wrong, but I think the alt. light is set to illuminate if the system sees less than the desired amount of voltage from the alternator.

    I'd say you have an alternator problem....

  5. #5
    Join Date
    May 2007
    Location
    San Diego, CA,USA
    Posts
    61
    My Cars
    2003 BMW 525i
    yah alternator is it...waiting on a tow to go get it fixed....thanks for the input though

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