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Thread: Alarm woes

  1. #1
    ScotchRocks Guest

    Alarm woes

    Hi team,

    This morning at 0030, Gary decided that the neighbourhood should be awake.
    Key fob disabled the alarm, but then he didn't want to lock and beeped as if a door was open. Checked all doors, still no love. (Alarm had been fine for a couple of days sitting there).
    Only difference to usual is that I left battery charger on overnight - can't see how this would trigger alarm though.
    Doors wouldn't lock with the horn bleep as they do when one isn't fully closed, so reasonably confident it isn't a door sensor.
    Cycled to key position 2, fuel pump activated and everything was normal on the dash. Not immobilised.
    Still wouldn't lock with fob.
    Did rf test with nanocom, key signal fine.
    Ended up disabling alarm and manually locking cause it started to rain and I wanted to go back to bed.
    Have seen some forum posts suggesting this phenomena is related to charger or accessory in 12v cigarette plug - I had nothing connected.
    Nanocom was not connected when issue occurred.

    Next test theories:
    Hard reset of BCU by unplugging battery
    Play around with bcu settings in nanocom until it is fixed or gets worse.

    anyone else have this / advice to a fix, or more importantly cause?

  2. #2
    Join Date
    Jul 2014
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    Hi, some questions:
    1. Are the doors working form the dash switch?
    2. when the charger was on were all the doors + bonnet closed and locked with the fob?
    Discovery Td5 (2000), manual, tuned

  3. #3
    ScotchRocks Guest
    1. Dash lock works.
    2. Doors locked with charger on, but bonnet ajar (to first latch, as if it was just popped) to make room for charger clips, I removed the charger and closed the bonnet properly and it wouldn't lock.

  4. #4
    Join Date
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    Maybe the alarm went off because some ratbag was fiddling with your truck
    You only get one shot at life, Aim well

    2004 D2 "S" V8 auto, with a few Mods gone
    2007 79 Series Landcruiser V8 Ute, With a few Mods.
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  5. #5
    ScotchRocks Guest
    Quote Originally Posted by trout1105 View Post
    Maybe the alarm went off because some ratbag was fiddling with your truck
    The only ratbag that fiddles with my truck is me! Given the weather and the suburb I live in, I would say not likely but then you never know....

    Doesn't explain the malfunction of not locking after I had been out for a gander.

  6. #6
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    It's possible that the BCU went to sleep and you could have woken it up by using the key then the fob, i have the feeling that it will work after you re-enable the alarm but if not lock/unlock with the key but dont open the door then try with the fob
    Discovery Td5 (2000), manual, tuned

  7. #7
    Join Date
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    Hi Adam, two thoughts:

    Were any windows partly down before / when the alarm went off?

    Have you been having any difficulty opening and fully closing the rear (tail-gate) door?

  8. #8
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    Quote Originally Posted by ScotchRocks View Post
    1. Dash lock works.
    2. Doors locked with charger on, but bonnet ajar (to first latch, as if it was just popped) to make room for charger clips, I removed the charger and closed the bonnet properly and it wouldn't lock.
    Seems likely it's the bonnet sensor then, unplug it and try again.

  9. #9
    ScotchRocks Guest

    Thanks Everyone

    So... like most things computer related, the solution is:

    Turn it off and on again.

    I believe the technical term is 'power cycle the device.'

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