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ABS/Headlights

Discussion in 'A3/S3 Forum (8L Chassis)' started by mattoo, Dec 18, 2009.

  1. mattoo
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    mattoo New Member

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    [Dec 18, 2009]
    When I was larking about in the snow on the way home, I noticed that when the ABS kicks in the headlights would dim slightly. Is this normal behaviour?
    Can anyone shed some light (cough) on what is happening?

    Oh and the car is a 2000 A3 Quattro.
    #1
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  3. golf
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    golf ***** rent boy VCDS Map User

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    [Dec 18, 2009]
    Do you mean ESP?
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  4. Sandip
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    Sandip Well-Known Member

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    [Dec 18, 2009]
    Your battery might be on its way out
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  5. mattoo
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    mattoo New Member

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    [Dec 18, 2009]
    Nope, I mean ABS. My car doesn't have ESP...
    But do you have an idea if it was the ESP?
    #4
  6. mattoo
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    mattoo New Member

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    [Dec 18, 2009]
    I did wonder about the battery..
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  7. A3Tom
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    A3Tom Smell my finger.

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    [Dec 18, 2009]
    Maybe the way it works causes a huge drain in the battery. Much the same (but greater) as when you turn on the heated rear screen or try and put an up window up. Mine dim but only VERY slightly when I do the above.
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  8. mattoo
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    mattoo New Member

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    [Dec 24, 2009]
    Update..
    Today I noticed that the first turn of the starter was a bit slower than normal.
    So went to halfords and had them check it with their fancy Bosch tester. And yep the battery is knackered. I've been to the local Audi dealers and ordered up a new battery (£80), but are the cheaper alternatives any good?
    #7
  9. s3ollie
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    s3ollie Member

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    [Dec 24, 2009]
    although the halfords battery's are a bit cheaper they are also a bit bigger and a bit of a squeeze to fit in the sleeve/hole in the S3
    #8

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