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  #1  
Old 15th August 2018, 04:21 PM
The_Laird's Avatar
The_Laird The_Laird is offline
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Default Random Alarm Triggering

My alarm has started to trigger itself (once even while driving). It usually sounds for a few seconds and then repeats after a few seconds and does it again a few times. It makes no difference if I lock/unlock the car or if I start it.

And once it's been through it's little ritual, it behaves itself for weeks at a time .... and then triggers as above.

Not sure if the indicators are supposed to flash when the alarm triggers, but mine don't.

Anyone got any ideas?
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #2  
Old 15th August 2018, 04:35 PM
HPsauce HPsauce is offline
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Maybe it's just the alarm horn, some sort of internal fault?
Have you done a VCDS scan?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one!
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
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  #3  
Old 15th August 2018, 04:38 PM
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The_Laird The_Laird is offline
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Not done a scan yet - the laptop is flat and we're going away in the morning, so don't reall have time. Should the indicators flash too, though?
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #4  
Old 15th August 2018, 04:46 PM
MikkiJayne MikkiJayne is offline
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If the alarm is triggered then yes, the indicators will flash. If they're not then I'd agree with Andrew that its likely a sounder fault, especially if its gone off while driving.
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  #5  
Old 15th August 2018, 04:50 PM
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Thanks Andrew and MJ. I’ve changed the alarm before and IIRC it was a real PITA! I think I’ll just look for the fuse and pull that for now. And look for a replacement alarm.
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #6  
Old 15th August 2018, 04:50 PM
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moltuae moltuae is offline
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Sounds like the common leaky internal battery fault in the alarm unit/sounder. I changed my alarm unit several years ago but I seem to remember lots of similar strangeness and chirping.
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  #7  
Old 15th August 2018, 05:06 PM
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The_Laird The_Laird is offline
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Quote:
Originally Posted by The_Laird View Post
Thanks Andrew and MJ. I’ve changed the alarm before and IIRC it was a real PITA! I think I’ll just look for the fuse and pull that for now. And look for a replacement alarm.
But I can’t find the fuse. The alarm diodes fuse is listed, but not the alarm itself.
__________________
2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #8  
Old 15th August 2018, 05:37 PM
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briang9 briang9 is offline
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when mine did that I removed the alarm horn and never bothered with it, think the connection to the horn was damaged and you're right it's a PIA trying to fix as there is no "play" in the wiring. Think I might have a spare horn lying around somewhere, but that wont be much use if the wiring is gubbed...
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  #9  
Old 15th August 2018, 06:36 PM
HPsauce HPsauce is offline
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I've replaced mine with the "later" version and located it in a slightly different position (same basic area) so that the wiring isn't quite as taut.

Can't recall if there's a fuse, probably not a separate one as such, just disconnect and ideally remove the thing.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one!
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
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  #10  
Old 15th August 2018, 06:38 PM
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Quote:
Originally Posted by The_Laird View Post
Thanks Andrew and MJ. I’ve changed the alarm before and IIRC it was a real PITA! I think I’ll just look for the fuse and pull that for now. And look for a replacement alarm.
If you take Brian up on his offer, head over to this thread on how to replace it:

http://forum.a8parts.co.uk/showthread.php?t=6992

...and you're right, it is a real PITA.
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights

My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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