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Volvo Guard Alarm Problem

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Old Jan 3rd, 2010, 15:21   #1
flibble42
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Last Online: Jan 10th, 2010 20:21
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Location: Lancaster
Default Volvo Guard Alarm Problem

I've got a '96 V40 and I totally flattened the battery when locked using the fob (left interior lights on ) - sorted out the battery but the alarm is now on permanently. Found some great info on this forum to temporarily disable the alarm (unplugged siren & pulled out the CL/fuses) but I can't 'reset' it - and the wife is pretty unimpressed with no remote/central locking... From the info I've found its a Volvo Guard unit (2 button fob with lock/unlock buttons) and I've attached pics of the fob, RCL unit and what I think is the alarm unit (is connected to the RCL unit only) in case this helps.

The fob still appears to be working (when I press either button the hazards lights change from flashing quickly to on for ~2 seconds), I tried a couple of suggestions I found but nothing has worked yet.

Any help would be very much appreciated!
Thanks, Dan
Attached Images
File Type: jpg fob.jpg (251.5 KB, 23 views)
File Type: jpg immob.jpg (194.9 KB, 28 views)
File Type: jpg rcl.jpg (157.3 KB, 30 views)
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Old Jan 10th, 2010, 00:00   #2
flibble42
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Managed to get this sorted . Local scrappy was breaking an S40 and I managed to get everything shown in the 3 pics (rcl unit, alarm unit and a fob). Plugged siren back in, took battery earth cable off, shorted earth cable to live, put alarm fuses back in, turned ignition to position II, swapped the rcl and alarm boxes over, doors closed, bonnet open, and re-connected earth. Everything was ok, alarm was off, fob worked on doors but immobiliser was engaged as alarm unit wasn't coded to ECU (immobiliser light on) so engine wouldn't start.

Took battery earth cable off, shorted earth cable to live, turned ignition to position II, swapped the alarm box back to original item, doors closed, bonnet open, and re-connected earth. Everything was fine and back to normal!! Fob works fine and engine starts fine.

Hard to pinpoint exactly what solved it, either swapping the 'keyless entry' (RCL) module or connecting up an unit alarm in a disarmed state that somehow reset the other alarm components. Or I could have just got the correct procedure when trying out the alarm bits this time and not in the past!

Hope this helps somebody!
Dan.
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Old Jan 10th, 2010, 20:21   #3
flibble42
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Turned out to be a faulty keyless entry module.
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alarm, reset, v40, volvo guard


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