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Telshe

Member Since: 02 Jul 2015
Location: West Oxford.
Posts: 49

Alarm going off around midday when the weather is hot

Over the last few weeks when we have had some decent weather my alarm decides to go off. Any body got any ideas what could be causing this to happen. It usually goes off around 11ish to 2ish.
Many thanks for any info.
Telshe

20th Jul 2016 2:21pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Alarm interior movement sensor may be set it off if you one fitted

20th Jul 2016 2:30pm

Telshe

Member Since: 02 Jul 2015
Location: West Oxford.
Posts: 49

Many thanks for you quick response Dorsetsmith. Would the sensor be near the roof lining behind the drivers seat ?.
What can l do to check this is the cause ?
Many thanks Telshe

20th Jul 2016 3:08pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

yes that's the one

Do you have remote central locking ?

20th Jul 2016 3:10pm

Telshe

Member Since: 02 Jul 2015
Location: West Oxford.
Posts: 49

Yes I do. This how l get over the alarm going off during the day. I set the alarm when has cooled down
Regards Telshe

20th Jul 2016 3:47pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

set it using the key as listed below

Click image to enlarge

20th Jul 2016 3:50pm

Vogler

Member Since: 02 Nov 2014
Location: Brussels
Posts: 309

Did you leave a window open? I recently read about it's functioning in the workshop manual, and apparently it reacts to air moving inside the cabin. On hot days, I tend to leave the vents open when its parked on a quiet spot but that has never triggered the alarm (yet..?).

Greetings,

Joris

Edit: moving air is already mentioned in the screenshot in the previous reply.

20th Jul 2016 3:54pm

camelman

Member Since: 27 Feb 2013
Location: Peak District
Posts: 3369

Have you got a bonnet sensor fitted in the alarm system?
Our RR alarm used to go off when it got hot ant the bonnet expanded ever so slightly.

20th Jul 2016 7:23pm

Riccarton

Member Since: 10 Aug 2015
Location: Gods' Own Country
Posts: 280

2012 Defender 90 Puma 2.2 HT Zambezi Silver

+1 for the bonnet trigger if you've got one!!! Easily tested though - simply pack it with something on a really hot day and see if it still activates

20th Jul 2016 7:37pm

discomog

Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2526

2015 Defender 90 Puma 2.2 XS CSW Santorini Black

My alarm went off at 01.30 this morning (MY2015, fitted with additional bonnet switch). All windows were closed so there should not have been any air movement in the vehicle. I put it down to the fact that it was stood in the sun all day (it reached 31.7 degrees here). Be interested to know how many more went off in the heat? Defender 90XS SW
Mini Countryman Cooper S
Morgan Plus 8

20th Jul 2016 8:38pm

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