1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Alarm going off randomly... Help!

Discussion in 'A3/S3 Forum (8L Chassis)' started by jedwa115, Aug 30, 2006.

  1. jedwa115

    jedwa115 Member

    Joined:
    Mar 31, 2006
    Messages:
    97
    Likes Received:
    0
    I've got what seems to be the same problem as a lot of people - the alarm on my S3 goes off randomly and the only way to stop it happening some days is to leave the car unlocked. Have read a few threads and seems that this is prob a problem with lock sensors or batteries in the boot.

    My Q's are:

    1. Will a diagnostics check tell me anything categorically or will I still be guessing after paying for it to be plugged in?

    2. Am I right that there is no way to lock the car without alarming it?

    Cheers, Jon
     
  2. Google AdSense Guest Advertisement



    to hide this advert.
  3. madvw

    madvw Active Member

    Joined:
    Jul 26, 2005
    Messages:
    2,488
    Likes Received:
    2
    All you will be able to tell from scanning fault codes is how the alarm was triggered. This will be useful in identifying which door or boot latch/lock needs replacing.

    However, it won't tell you if the siren battery is duff.
     
  4. god_thats_quick

    god_thats_quick Numptie of the highest order

    Joined:
    Jun 1, 2004
    Messages:
    2,507
    Likes Received:
    1
    If you disable the interior sensors I think it will stop the alarm going off, it's the button on the drivers door pillar.
     
  5. jedwa115

    jedwa115 Member

    Joined:
    Mar 31, 2006
    Messages:
    97
    Likes Received:
    0
    No good. That's the first thing I tried. Makes no difference.

    As I type, it's been about an hour without going off. That's after "properly" shutting (read "slamming"!) all doors and bonnet. Had the same prob a few weeks back and that seemed to stop it then.

    Seems I'll need to have the fault codes checked and then I know which door to have a look at.
     
  6. AndyMac

    AndyMac Moderator
    Staff Member Moderator

    Joined:
    Jun 10, 2003
    Messages:
    9,833
    Likes Received:
    38
    Disconnect the battery and lock it manually.
    Had this on my old A3 and it was always on cold nights at 3am, so I put it down to the battery backup issue.
     
  7. SyA3Turbo

    SyA3Turbo Member

    Joined:
    Mar 3, 2005
    Messages:
    167
    Likes Received:
    0
    Its the siren thats the problem. I had my alarm going off randomly. Then it got broken into and didnt sound.

    Fitting a new unit in the boot has sorted it though!
     

Share This Page