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My Alarm keeps going off randomly......
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paulJ1
 


Member Since: 17 Mar 2009
Location: Stewarton, Scotland
Posts: 268

2005 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3
My Alarm keeps going off randomly......

Yes as I saidm my alarm eeps going off,randonly... I open the car.... relock, it beeps, leave it 10s, relock again and it locks...

A few weeks ago, I opened the bonnet shut it, and the bonnet open message remained, had a few open and closes, and it went away.... no message on dash since.

How do i isolate the cause.. idease please.

Paul
 Got our Disco... Love it.....  
Post #84137728th Sep 2011 9:32 pm
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caverD3
 


Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

Probably the bonnet switch. Damaged or broken. I repaired mine or you can replace.
 â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games”
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System. 
 
Post #84142529th Sep 2011 12:30 am
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Wildrover
 


Member Since: 19 Jul 2005
Location: Walkabout
Posts: 628

Ireland 2007 Discovery 3 TDV6 HSE Auto Arctic FrostDiscovery 3

I second that the bonnet switch easy way to confirm is to remove the plug of the switch and short it out
 2007 D3 HSE Artic Frost Silverish
Wandering Aussie-Looking for SUN

Growing Old is Mandatory, Growing Up is Optional. 
 
Post #84144729th Sep 2011 6:38 am
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adam
 


Member Since: 20 Sep 2005
Location: Home and Happy
Posts: 6917

United Kingdom 

Definatley - try a squirt of wd40 first - its the catch on the drivers side - looking forward
Happened to me few months ago - quick squirt and clean, nothing since - just regualr check its not gunked up
  
Post #84146829th Sep 2011 7:39 am
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mbf
 


Member Since: 24 Jan 2010
Location: Devon
Posts: 74

United Kingdom 2008 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

I had the same thing earlier this year.
Turned out no to be the sensor, but the bonnet catch itsel was stuck local stealers tried just freeing up the catch but eventually had to replace the catch completely to stop it.

(was done free under the extended warranty though) Laughing

Mark
  
Post #84148129th Sep 2011 8:20 am
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Calcul@tor
 


Member Since: 08 Mar 2006
Location: Middle England!
Posts: 810

England 2012 Discovery 4 3.0 SDV6 XS Auto Galway GreenDiscovery 4

I had the same problem. Just shorted the switch with a bit of wire / paper clip.
 D4 XS MY12 Galway  
Post #84182429th Sep 2011 9:41 pm
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2821

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Yep been there too.

For me though it wasn't the alarm going off, but not being able to lock the car without a blast from the horn every time I'd had the bonnet open for some reason.

After flushing out the catch etc with WD40 and not getting a result I 'adjusted' the thin metal strip that activates the microswitch.

This involved hooking the right angle end of a scriber under it and bending it up slightly so the catch attached to the bonnet touches it sooner and activates the switch.

I'm convinced the arm bends over time having the catch constantly pressing against it.

Nasher
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #84183929th Sep 2011 10:15 pm
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