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Mark T Boldry



Member Since: 08 Feb 2019
Location: York
Posts: 29

United Kingdom 
Random Alarm Sounding

2012 4.4 TDV8

For some time now, the alarm will randomly sound. My research pointed me to the bonnet sensor switch which I changed some months ago (genuine Land Rover part fitted), the fault still persists... Last time it was in for a Service (about 3 weeks ago), I asked the specialist to investigate... aparantly, their code reader will indicate the last few alarm triggers, they were...: N/S/R Door x 2, O/S/F Door x 1 O/S/R Door x 1...
Can anyone shed any light on either / or bypassing the sensors, muffling the alarm sounder or disarming the alarm altogether please...
I’m seriously Censored off the neibours and my lovely Range Rover is getting a bad reputation.. Sad

Post #595890 30th May 2021 7:27pm
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mjdronfield



Member Since: 04 Nov 2011
Location: Derbyshire
Posts: 7793

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

Mine used to go off randomly.... as it sat in the heat and the bonnet switch triggered as the metal moved. I bent the bracket up a bit and put a rubber grommet on the end of the plunger to make it effectively longer. No issues since.

I can’t help if it’s your door locks.... strange one. I wouldn’t have thought they would all become faulty at the same time....

Perhaps they are old codes? Perhaps clear and see if they come back?

Thumbs Up 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Post #595899 30th May 2021 8:02pm
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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16281

England 2015 Range Rover SVAutobiography SDV8 Loire Blue

Not a nice thought but, could anyone be trying to tamper with the car? There's a big issue with theft at the moment sir...

Post #595912 31st May 2021 12:10am
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nicedayforit



Member Since: 11 Jun 2011
Location: Beside the Solway
Posts: 3972

England 2004 Range Rover Vogue Td6 Giverny Green

Try setting the alarm with the internal sensor switched off and see what happens.

Post #595927 31st May 2021 8:44am
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RRover



Member Since: 17 May 2021
Location: Sussex
Posts: 278

2012 Range Rover Westminster TDV8 Causeway Grey

Mine went off a few times (also a 2012 4.4 TDV8) when I first got her around two and a half years ago, when it rained heavily. OK since then though. I had a Jag XK8 about 4-years ago and the alarm would go off every time it rained heavily or was very windy - until someone suggested closing all the air-vents on the dash, to stop the wind affecting the air pressure inside the car, and setting of said alarm. That silly thing worked, though probably the air pressure thing doesn't relate to the TDV8?!? Have I seen that low battery can set alarm off also?

Post #595929 31st May 2021 8:58am
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CongoBoy



Member Since: 11 Sep 2020
Location: Wiltshire
Posts: 126

South Africa 2005 Range Rover Vogue SE 4.2 SC V8 Java Black

Just from my side; my FFRR was doing this last week.
From my D3 back home in Africa, I had a similar problem.
I think it's flies/insects/spiders that are inside and they move around at night with the street lamps etc. and set off the alarm.
As suggested, disabling the internal sensors, if you can, or if not just blast the inside with Doom/Raid or other insectide and see what happens?
Worked for me!! Thumbs Up 2005 FFRR SC Java Black with Overfinch Exhaust (UK)
2008 D3 HSE Stornoway Grey (UK)
2008 D3 HSE Izmir Blue (ZA/Zimbabwe)
1995 D1 300 Tdi (Zimbabwe)

Post #596003 31st May 2021 6:16pm
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Mark T Boldry



Member Since: 08 Feb 2019
Location: York
Posts: 29

United Kingdom 

Thanks for your input so far... it looks like I’m the only person suffering with this problem... however, the battery is nearly new, there is nobody tampering with the cars and I’ve changed the bonnet switch (OE part).

How do I isolate the interior sensor..?

Cheers,
Mark

Post #596007 31st May 2021 7:01pm
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mjdronfield



Member Since: 04 Nov 2011
Location: Derbyshire
Posts: 7793

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

Don’t double lock the car... ie only press the lock button once on the remote fob to lock, not twice.

Thumbs Up 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport


Last edited by mjdronfield on 31st May 2021 7:23pm. Edited 1 time in total

Post #596011 31st May 2021 7:17pm
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mjdronfield



Member Since: 04 Nov 2011
Location: Derbyshire
Posts: 7793

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

Click image to enlarge
 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Post #596012 31st May 2021 7:22pm
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Rog21



Member Since: 09 Nov 2018
Location: Havant
Posts: 62

England 2012 Range Rover Vogue TDV8 Buckingham Blue

I had a random alarm sounding on mine, again suspected bonnet switch so removed and taped over, still sounded usually around 8 at night.
The code reader said a few things but latest was rear left door. I had oiled locks a couple of weeks before. I took door card off and sprayed WD 40 into lock and plugs from inside and out and opened and closed and locked doors a number of times. Never went off again.
Worth checking the latest code as the codes are time stamped.

Rog L322 4,4 TDV8
Freelander 2 sold
Honda Transalp
Sunbeam S7 deluxe (in bits)
Sunbeam S8 (restoring)

Post #596134 1st Jun 2021 8:29pm
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Mark T Boldry



Member Since: 08 Feb 2019
Location: York
Posts: 29

United Kingdom 

Now we’re talking... Just perhaps dirty terminals... Mine goes off randomly, but like your’s, early evening is the most common time, although it can get later into the night... very occasionally during the day, but not often..

Post #596171 2nd Jun 2021 5:57am
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