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balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

2002 Defender 90 Td5 CSW Buckingham Blue

Factory Alarm...locking with windows open?

I sometimes, like today when I'm working my dog in a field, want to leave the 90 locked but with windows open.

However I have one of those sound/pressure detectors as part of the factory alarm that inevitably means the alarm goes off after a while.

Same applies if windows are shut, but I've left the dog in side e.g. going to pay for fuel

Does anyone know a way to disable this part of the alarm, or to lock the car on central locking without setting the alarm? Could it be as simple as covering it before I set the alarm?

11th Jun 2021 7:31pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17327

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Lock the car using the key in the driver's door. The alarm will be set but without the volumetric sensor being turned on. Unlock in the usual way (plip) or you'll set the alarm off.

An alternative some folk do is to pop the volumetric sensor off the headlining and unplug one of the wires, thereby disabling it. I find that the proper method (key in door) works best.

11th Jun 2021 7:46pm

glpinxit

Member Since: 31 Jul 2010
Location: rural Somerset
Posts: 156

Not sure how widely it applies but on both my TD5 and Puma- leave driver's door open; press 'lock' button on remote fob; horn sounds, briefly (signifying disarm of sensors); close door. Cheers, Guy.

11th Jun 2021 8:23pm

balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

Thanks both, will give it a try

11th Jun 2021 9:06pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5653

2006 Defender 110 Td5 USW Zermatt Silver

PM’d you

11th Jun 2021 9:35pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17327

glpinxit wrote:
Not sure how widely it applies but on both my TD5 and Puma- leave driver's door open; press 'lock' button on remote fob; horn sounds, briefly (signifying disarm of sensors); close door.

Really? That is not how it should work. If the driver's handbook is to be believed, if you do this the volumetric sensor will be disabled until the moment you shut the door properly, then will arm.

This is the "approved" method:

11th Jun 2021 9:54pm

glpinxit

Member Since: 31 Jul 2010
Location: rural Somerset
Posts: 156

Following @blackwolf post I've had a look at my (2014) TDCi handbook and it clearly doesn't cover anything about arming the alarm without the volumetric sensors. I think the door thing my post referred to was set out in my TD5 manual but could be mistaken. I think @blackwolf may have been referring to it in an old thread https://www.defender2.net/forum/topic5817-15.html

Click image to enlarge Cheers, Guy.

12th Jun 2021 7:47pm

BogMonster

Member Since: 05 Feb 2008
Location: Stanley
Posts: 400

2015 Defender 110 Puma 2.2 USW Corris Grey

I would have said blackwolf's approach was correct, key in door, that is certainly how the older Discoverys worked and they used the same alarm ECU.

My Puma doesn't have an alarm and is rarely locked, so can't say for sure! ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi

13th Jun 2021 10:42am

balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

Key in door works so thanks all.

15th Jun 2021 9:22pm

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