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  1. #1
    Active Member One Ring
    Join Date
    Apr 07 2015
    AZ Member #
    325549
    Location
    Toronto, Canada

    Disconnecting alarm siren

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    Hi, I have a 2001, A4 1.8T (B5) sedan. I know you can't disconnect the alarm system, but can you disconnect just the siren? I've spent enough trying to fix the alarm randomly going off. Now I don't care if the alarm goes off, I just don't want to hear it. Thank you.
    Last edited by JayDemos; 07-10-2018 at 07:12 AM.

  2. #2
    Established Member Two Rings
    Join Date
    Jun 08 2017
    AZ Member #
    400768
    Location
    london

    Itís probably going off due to movement sensors. Why donít you disconnect them?


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  3. #3
    Active Member One Ring
    Join Date
    Apr 07 2015
    AZ Member #
    325549
    Location
    Toronto, Canada

    Not sure how to do that but I will look it up. Thank you.

  4. #4
    Established Member Two Rings
    Join Date
    Jun 08 2017
    AZ Member #
    400768
    Location
    london

    On my A4 they are on the b pillar above the seat belt adjuster. Get a trim tool and pry the top down from the headliner. Donít use a screwdriver as you will break the plastic. You will see a little wire coming down from the sensor. Just pull that down and it disconnects.


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  5. #5
    Established Member Two Rings turbo3's Avatar
    Join Date
    Oct 08 2012
    AZ Member #
    101879
    Location
    Central Florida

    Leaving the windows cracked ain't ya?

  6. #6
    Veteran Member Three Rings vrmm's Avatar
    Join Date
    Nov 14 2011
    AZ Member #
    83906
    Location
    NW

    For me it's always been in the trunk area. B5 it's above the disc changer and C5 Allroad it was below the rear passenger brake light. In the Allroad it would go off all the time too. I replaced all the door lock modules per vagcoms 'codes'. After resoldering their connections. Only thing I didn't replace was the trunk and it would randomly make noises like it was locking and unlocking while I was driving, but that wasn't very often. Anyways... In my b5 sedan like I said, siren is in the trunk. Not sure what the pillar stuff they're talking about. Your lights still go off. But they stop eventually and you'll never be they wiser.

  7. #7
    Active Member Two Rings
    Join Date
    Feb 27 2016
    AZ Member #
    369420
    Location
    Cincinnati,OH.

    I believe that you can just turn off the motion detectors via a switch. Can't recall exactly where it is, (on one of the b pillars perhaps? Check owners manual.)

  8. #8
    Established Member Two Rings
    Join Date
    Jun 08 2017
    AZ Member #
    400768
    Location
    london

    Yes thereís a button at the base of the drivers b pillar. Trouble is it resets every time you lock the doors again.

    Best way is to disconnect the movement sensors.


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  9. #9
    Established Member Two Rings turbo3's Avatar
    Join Date
    Oct 08 2012
    AZ Member #
    101879
    Location
    Central Florida

    I'm not sure of removal but I think you can turn the sensitivity down or even off via vagcom

  10. #10
    Established Member Two Rings
    Join Date
    Jun 08 2017
    AZ Member #
    400768
    Location
    london

    Yes you can turn it down to 50% but not off.


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