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Fifth Horseman

Member Since: 08 Mar 2011
Location: Lanarkshire
Posts: 334

2011 Defender 110 Puma 2.4 XS CSW Santorini Black

After a little more digging, it seems that the 10as alarm as used in the '96 on Discovery has sill switches on both front doors. I think that this software module for the nanocom was originally written with that in mind and has not been changed for the Defender. BBS may be aware of this known 'feature' - changing it so it is correct for the Defender may introduce problems for other users.

Nanocom was originally developed independently, just for the Discovery (I believe by someone in Italy) and was subsequently bought and further developed by BBS.

2nd Apr 2015 10:28pm

taffrican

Member Since: 14 Jan 2011
Location: Living room
Posts: 625

Cheers FH, that sounds very likely, I've emailed Christian & Adrian @ bbs were helping me with the pin-8 error, we originally thought the unit was at fault and we were discussing sending the unit back but seeing as I found fault with the car I'm glad I didn't send it, I've asked the question about the sill switches so now awaiting their reply, but your theory sounds very plausible.

Optimists say the glass is half full..
Pessimists say the glass is half empty..
Engineers say the glass is twice the size it needs to be!

2nd Apr 2015 11:44pm

Coolcamper55

Member Since: 22 Apr 2010
Location: Inverclyde
Posts: 45

2007 Defender 110 Puma 2.4 XS CSW Santorini Black

Pardon my ignorance but where are these sill switches, is it the ones that turn off/on the courtesy lights.

I have had my alarms system act up over the last few days and am trying to fix it.

I don't have a nanocom just working through with visual inspections and multimeter.

If I lock the car with the plip, the locks engage, almost immediately disengage and the alarm goes off.
Going to try it with the key, and see what happens, at least it will be quieter.

Tommy Tommy

110 XS TDCi

6th Apr 2015 8:33am

Fifth Horseman

Member Since: 08 Mar 2011
Location: Lanarkshire
Posts: 334

The sill switch is attached to the drivers side door lock, the others are the interior light switches on all other doors, plus the bonnet switch. Check the switch wiring for chafing and shorting against the bodywork. Sounding twice then unlocking means the alarm thinks one of the doors is still open.
Does your interior light work correctly, if so then check the bonnet switch.
Also check the alarm connectors for corrosion, if your vehicle has had a water leak around the windscreen the alarm is in a vulnerable place - its not unknown for water to affect the alarm unit itself.

6th Apr 2015 8:43am

jomara

Member Since: 26 Oct 2009
Location: Lanarkshire
Posts: 1790

2014 Defender 110 Puma 2.2 XS CSW Santorini Black

Hi Tommy

The door switches are located halfway up the pillar at the front of the door (same side as the hinges) they're held in place by a single screw.

Nick Mc has just done this job, here's his thread http://www.defender2.net/forum/topic36144.html

Cheers
John 2014 110 2.2TDCi XS Station wagon
1971 Bowler Tomcat 88 4.2 V8 Auto
2022 110 D250 XS Edition - Gone
2024 110 D250 X-Dynamic HSE

6th Apr 2015 8:44am

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