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Thread: Car won't start after battery went dead and recharged it

  1. #1
    Join Date
    Oct 2011
    Location
    Indy, IN
    Posts
    6
    My Cars
    12 135i91 325ic 87 325is

    Car won't start after battery went dead and recharged it

    I am trying to start a 2012 135 after the battery went dead and I put the battery charger on it and charged it up. The battery was replaced from original and is only two years old. The car is not driven much and I had forgotten to put the battery tender on it. Question is does it need to be reprogrammed? Any help to resolve this issue would be helpful the key fob doesn't unlock the doors or interior lights don't work still either.

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,933
    My Cars
    2018 BMW M240i
    When you say “the car won’t start,” do you mean the engine won’t crank or do you mean the engine will crank but won’t run? A fully discharged battery can’t hold the same level of charge as a battery that’s never been completely discharged. Why? When a lead acid battery charge level goes below a certain level the lead plates are permanently damaged by the chemistry. Fully charge the battery and have it tested at a parts store. I’m betting it’s toast.

  3. #3
    Join Date
    Oct 2011
    Location
    Indy, IN
    Posts
    6
    My Cars
    12 135i91 325ic 87 325is
    The car won't crank at all, no lights come on at all and key will not unlock the door locks.

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