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Drivers door lock not registered as locked

Discussion in 'A3/S3 Forum (8L Chassis)' started by WildBruce, Dec 8, 2008.

  1. WildBruce
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    WildBruce Third Gear

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    [Dec 8, 2008]
    So when I close my drivers door, and press the button on the remote, the inside light stays on, and if I peek in through the drivers door, the red light inside the door is also on. AND sometime when I am in the car, I close the door, and it says it is open [which it is NOT, I am SURE]

    Open and closing a couple of times normally sorts it, but I would like to fix this. Read a similar post about a boot lid, and the solution was to spray lube all over the locking mechanism, so I have two questions
    1) Will the above possibly solve my problem, and
    2) If so, where is the sensor, on the piece inside the door, or on the piece on the car?

    Thanks,
    #1
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  3. willj22
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    willj22 New Member

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    [Dec 8, 2008]
    I get this message on my trip computer 2, I find giving it a slam always works.....would be interested to see if any one else has solved this though?
    #2
  4. Carpy25
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    Carpy25 Member

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    [Dec 8, 2008]
    the micro switch is inside the lock mech in the door the bit that catches onto the pin in the door shut ,wd40 may work but your biggest problem is when you alarm the car it will keep setting the alarm off as it thinks the doors open , there is more than one switch in there 3 i think mine was also making the interior light pluse ,maybe it just the cold ? and the switch is frozen try lock anti freeze as well theres a drivers side on ebay

    http://cgi.ebay.co.uk/Audi-drivers-side-rear-door-catch-mechanism_W0QQitemZ180311285940QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item180311285940&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318

    check numbers first with audi

    Rob
    #3
  5. WildBruce
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    WildBruce Third Gear

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    [Dec 9, 2008]
    I always open and close the door until I know it is set, that way it does not set the alarm off, so may try spraying with some lube and then seeing if it settles down, failing that may look to replace the switch.
    #4
  6. S3Matt
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    S3Matt Member

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    [Dec 10, 2008]
    I had this problem when I bought my s3. The computer would register the door as being open, and the alarm wouldn't set even when the door was definately shut and locked. I ended up having the door catch replaced which sorted the problem out.
    #5
  7. Nilz
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    Nilz Defo worth the wait :)

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    [Dec 10, 2008]
    It is a microswitch issue, its a common fault on the A/S3, WD40 can do the trick and a good slam, however, it will come back....

    Normally happens in hot weather though, so could be freezing up if its happening in the cold weather.
    #6
  8. paul_brad
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    paul_brad Member

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    [Dec 10, 2008]
    welcome to my world.
    Been doing it since the summer, although a lot less now its cold.
    I've had my interior lights switched off, not forgetting the rear ones too.
    The red light in the door I don't think you can switch off, but seems to go out eventually when it's locked.
    The alarm won't go off, it's just it won't arm.
    New door lock time at some point....
    #7
  9. Dave B
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    Dave B REALITY?.... WHERE AM I AGAIN?.... WHO AM I AGAIN?

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    [Dec 16, 2008]
    #8
  10. Jackk
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    Jackk New Member

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    [Dec 18, 2008]
    i had the same problem and used wd40 seems to have done the trick. but when slamming the door managed to break a clip on the electric window mech and had to strip my door down, so be careful
    #9
  11. S£
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    S£ Member

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    [Dec 18, 2008]
    cost me £90 to have fixed at a vag specialist, the lock is £50 i think and the rest labour.
    #10
  12. WildBruce
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    WildBruce Third Gear

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    [Dec 24, 2008]
    I tried spraying WD-40 in the lock, and it did not work, although having said that, the problem is less frequent, may need to open it up and see if the bits need to be cleaned out, failing that I shall just get the part.
    #11

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