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Battery drain

Discussion in '2nd Gen - 2003 - 2006' started by tilliepeople, May 27, 2020.

  1. tilliepeople

    tilliepeople Well-Known Member

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    I come out every morning to a dead battery .
    Battery is only 6 months old and tests good .dropped in a 135 amp alternator .
    Is there any fairly common things that go wrong that would drain the battery that fast ?
    Thanks
    Bill
     
  2. Don Hall

    Don Hall Full Access Members

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  3. Don Hall

    Don Hall Full Access Members

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  4. Hamfisted

    Hamfisted Full Access Members

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    Things that will kill a good battery overnight. Headlights left on, or the rear window wiper motor not able to "park". Since you replaced the alternator. Was the old alternator bad ?
     
  5. MrSticker

    MrSticker Full Access Members

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    Yes ... many things can drain a battery overnight ... too many to list.
    BUT the only one I had on my 2003 is the rear wiper through the glass bushing being crudded up so the rear wiper doesn't go to the park position. Its happened 3 times I think so right away thats the first thing I think of when my battery drains overnight.
     
  6. Adieu

    Adieu Full Access Members

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    Overnight or just doing once-a-week 1 mile grocery runs since the corona situation began?
     
  7. heston gee

    heston gee Member

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    One culprit for a draining battery is the rear wiper.
    Ford identified the problem as the rear wiper wanting to return to home and if it is not ot able to the battery will drain. If this is your problem, replacing the rear wiper pivot will fix it. If you dont want to replace, open the lifthate glass and the motor will return to home.
    Attached is the TSB from July 2013

    Didnt see previous reply on this identification.
     

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  8. CaptainKrunch

    CaptainKrunch Member

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    Do your draw test as mentioned earlier in the thread. I believe the factory manual states the draw should be between 24 and 26 mah. I find it odd to have such a small differrence between the 2. And this is for a factory vehicle with no after market stuff.
     
  9. Wegner44

    Wegner44 Well-Known Member

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    Keep in mind that all 12 volt outlets remain hot while vehicle is off. I know its obvious, but something to check off the troubleshooting list.
     
  10. rjdelp7

    rjdelp7 2000 XLT

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    My CD changer had a jam and kept trying eject.
     

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