2002 E46 330Ci - Battery warning light

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  1. 2002 E46 330Ci - Battery warning light 
    #1
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    Beaky59's Car Details
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    The battery warning light on my son's E46 compact has come on a few times recently, it stays on for 5-10 minutes then goes off. Battery and charging seems fine and I can not feel/see any belt slippage, is the alternator on its way out?
    Last edited by mark@vorny.co.uk; 03-02-2011 at 13:41. Reason: Please familiarise yourself with forum rules ref thread titles
    Cheers Chris
     
     

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    #2
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    Drop test on the battery will decide for you OP
     
     

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    Ferret's Car Details
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    Once the car is running, it should in theory run off the alternator. So if the lights coming on after the car is started, I would suspect that the battery is fine. No harm in getting it tested though.

    To me, it sounds like it could be the voltage regulator on it's way out.
     
     

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    #4
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    Beaky59's Car Details
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    cheers
    Cheers Chris
     
     

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    mines done this tonight and last night but i put mine to driving through a deep puddle


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