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Battery going flat overnight

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by banny, Jun 13, 2007.

  1. banny
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    banny Member

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    [Jun 13, 2007]
    I have an A4 Avant TDi 02 model and the last two nights the battery has been going flat, when I go to start in the morning there is nothing, put the 50 amp starter on it and it is fine.
    I think the alternator is alright as it seems to be charging fine, as I can go a few miles and the car starts fine. so the battery must be holding charge.
    Does anyone have any ideas.
    Thanks for any help given
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  3. terrysingh
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    terrysingh Member

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    [Jun 13, 2007]
    hello mate
    have you recently done anything to the car, ie: nav install etc??

    mine kept going flat due to a couple of things, firstly was the retro nav install, i accidently connected the tmc unit to the live, and the second was my engine cooling fan that had a faulty module, making it come on full speed and causeing a major drain...

    unless you've still got the original battery as i did, audi recommend you change these every 5-6 years

    i've got a big bosch one now, does the business!!!!
    #2
  4. inigoj
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    inigoj Member

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    [Jun 13, 2007]
    Can you hear anything running after 5 mins, when you turn off the ignition?

    If it is not a short, the normal cause is a pump or motor running on.
    #3
  5. banny
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    banny Member

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    [Jun 13, 2007]
    turns out to be a knackered battey, theres a nice £110 down the drain.
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  6. terrysingh
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    terrysingh Member

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    [Jun 15, 2007]
    £110 quid... my bosch only cost £60 from ecp??
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  7. banny
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    banny Member

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    [Jun 15, 2007]
    Oh well, you was lucky, I did look around and most places where around £80-£100 but never had in stock, Audi-Basingstoke had them in stock so I took it, as it was I really needed it now as it was a pain having to put my jump starter on in the mornings and having to wait for 10 mins to put enough in to start.
    I am not worried anyway, job is done now and my car works good enough.
    Knew I could get it cheaper if I waited but I am impatient, want everything yesterday.
    #6
  8. Caesium
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    Caesium My BM is fixed!

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    [Jun 15, 2007]
    Blimey thats dedication to originallity, bought it from Audi, screw that! You must have cash to burn!
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  9. J7USS
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    J7USS Shuddup Foooool!!

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    [Jun 15, 2007]
    I pictured a Pissed off Banny when I read that!!!!

    #8
  10. banny
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    banny Member

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    [Jun 15, 2007]
    It was not really that, was a case of could not get one on the day as everywhere i tried had to order it in.
    Dunno about money to burn though, not poor but certainly not rich by any standards.
    Still its done now I suppose at least it will be on the audi computer system that the car has had a new battery from them.
    Could be handy when I come to trade in for a B7
    #9

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