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Waldo



Member Since: 18 Jul 2010
Location: Bit South of Manchester
Posts: 240

United Kingdom 
Alarm Gremlin
Alarm gremlin

So I came back home today to find the Defender Alarm going off.
Except the horn was sounding continuously rather than on off on off etc.
No matter what I did (lock, unlock, start) would cure this (apart from disconnecting the battery) so eventually I ripped out the horn fuse under the dash.
This stopped the problem... but then a much higher pitched alarm started going off intermittently a few minutes later
Didn't have time to work out what to do so I've disconnected the battery and locked everything up manually.

Any ideas as to what could cause this problem

The weather has been reasonable here last night and I drove it with no problems about an hour prior to the problem arising.

Regards
Will

03 TD5 90 XS Defender 90 XS TD5 (03 Reg)
Post #302725 27th Jan 2014 9:20pm
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Laurie



Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897

England 2005 Defender 90 Td5 XS CSW Bonatti Grey
My alarm kept going off in wet weather.
Cured the problem permanently but squirting WD40 into the door switches.

PS Always make sure you havent got a moth inside when you lock up. Rolling Eyes 
Post #302731 27th Jan 2014 9:28pm
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redhandluke



Member Since: 02 Jun 2013
Location: Northern Ireland
Posts: 243

United Kingdom 2003 Defender 90 Td5 SW Fuji White
Or a mouse and I'm not joking-off tomorrow to a transport company have had mice eating the cables in-cab Evil or Very Mad
Post #302737 27th Jan 2014 9:36pm
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Waldo



Member Since: 18 Jul 2010
Location: Bit South of Manchester
Posts: 240

United Kingdom 
So you think squirt WD40 into those little push sensors on the pillar?

Will Defender 90 XS TD5 (03 Reg)
Post #302741 27th Jan 2014 9:45pm
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JWL



Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

England 2002 Defender 110 Td5 SW Coniston Green
It's worth a try plus have a look to see if they are functioning correctly, a bit of a pain when you have a delay timer on the interior light, open one door at a time to see if the inerior light comes on straight away. To speed the job up, open the drivers window so you can reach the ignition, by turning on to position 2 the interior lights go out a bit quicker. Make sure the tabs that the switches push against are in the right position, don't forget the one under the bonnet by the bulkhead.
Post #302745 27th Jan 2014 9:51pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5703

2006 Defender 110 Td5 USW Zermatt Silver
Don't think problem will be door switches, as that would make alarm sound in the normal on/off/on way. The constant sounding makes me think more serious.

Andy
Post #302765 28th Jan 2014 8:19am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5703

2006 Defender 110 Td5 USW Zermatt Silver
Were your indicators flashing whilst alarm was sounding?
Have you repaired your rear light?

Andy
Post #302766 28th Jan 2014 8:24am
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Waldo



Member Since: 18 Jul 2010
Location: Bit South of Manchester
Posts: 240

United Kingdom 
The indicators weren't flashing
And the light started working properly again all by itself

Edit

Just reconnected the battery whilst leaving the horn and central locking fuse removed (far left of bottom left fuse bank and far left of bottom right fuse bank in the dash respectively).

Same thing happened.
High pitched alarm went on off on off
Started up and it stopped doing it sounding

Turned it off and the alarm sounded for a few seconds then stopped
Then started, then stopped etc etc

All the door switches work fine as the lights come on and off

I did put LED's in the interior lights about 3 weeks ago
And last week had a new x-member fitted so battery was disconnected for an extended period but everything worked perfectly afterwards.
The only difference is my tow electrics no longer have the connector on the end.
They are taped up

Will Defender 90 XS TD5 (03 Reg)
Post #302776 28th Jan 2014 9:10am
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Waldo



Member Since: 18 Jul 2010
Location: Bit South of Manchester
Posts: 240

United Kingdom 
So I took the car into an auto electrics place today

They plugged it in and found when the clicked on alarm no options came up on the sub menus of the diagnostics
Couldn't find a way to rewire it to get rid of the alarm or solve the problem at all

Has anyone had this with their own diagnostics on a Land Rover when looking at an alarm (e.g. with a nanocom)

They think maybe it's locked to land rover dealership diagnostics.

But saying that they have done an 07 reg Defender with no problems (although this is a later model obviously)

Any thoughts? Defender 90 XS TD5 (03 Reg)
Post #303290 29th Jan 2014 10:17pm
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achuakh



Member Since: 12 Apr 2012
Location: Singapore
Posts: 158

Singapore 2002 Defender 90 Td5 SW Oslo Blue
1. possibily you have an earth fault. the BBUS (high pitch alarm) is going off. It happens when it think that the main battery has been disconnected.
2. the 10AS unit cannot be accessed, perhaps it might be a fault in the 10AS unit.
3. have you triggered the alarm before? does it sound a contineous horn or beeps. If it was always the beeps and suddenly it decided to change to a contineous horn, then i'd place my bet on the 10AS unit.
4. if you manage to get it to talk, then maybe you just need to re program the 10AS unit. i've seen one 'suddenly' forget its settings and after a reprogram and 'relearn' of the ECU, all's well again. From the land of the most expensive land rover defenders on planet earth. At �125k for a XS 110 csw and you get to own it only for 10yrs! Please find me a good reason to stay on this island.
Post #308587 16th Feb 2014 2:16pm
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Romadog



Member Since: 07 Jul 2011
Location: Powys
Posts: 1749

Had something similair. I changed the BBUS as the one i had fitted was s/h from ebay. Not had the problem since. I also changed one of the horns as it was not sounding very healthy.
Post #308605 16th Feb 2014 3:16pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

In the beginning only LR diagnostic tools could read the 10AS module. Now tools like the Nanocom, MSV2 and Hawkeye give cheaper access to the module for the home enthusiast. More expensive dealer level tools other than IDS/SDD require licences/ or the 10AS module software to allow access Thumbs Up

BBS MSV2 10AS settings page:


Click image to enlarge


BBS Nanocom settings pages:


Click image to enlarge



Click image to enlarge



Click image to enlarge


HTH :D

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green
Post #308617 16th Feb 2014 4:01pm
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Waldo



Member Since: 18 Jul 2010
Location: Bit South of Manchester
Posts: 240

United Kingdom 
Sorry to bring this back to the fore, but the problem has resurfaced.

Also apologies for not replying to your answers, for some reason I failed to see them!!


Took the thing into Land Rover a few weeks ago and after an hours diagnostic they were sure it was the volumetric sensor.
I haven't been able to replace it but I reconnected the horns I had disconnected, took out the volumetric sensor (BBUS) and had zero problems until last night when the high pitch alarm started going off again intermittently every half hour for varying lengths of time (5-40 seconds)

Popped it in the garage this morning and the main horn has stopped working, as a quick fix I've disconnected the alarm sounder again and the car runs fine and obviously there is no more noise

SO
I've been thinking about getting a nanocom or the like to deal with problems like this and I've done quite a bit of research on the forum about what people think of nanocom and MSV2.
However does anyone have any "recent" experiences of both pieces of kit.
Also any thoughts on the problem would be good ha Defender 90 XS TD5 (03 Reg)
Post #321939 6th Apr 2014 3:37pm
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Waldo



Member Since: 18 Jul 2010
Location: Bit South of Manchester
Posts: 240

United Kingdom 
Edit - Accidental repost Defender 90 XS TD5 (03 Reg)
Post #321940 6th Apr 2014 3:37pm
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achuakh



Member Since: 12 Apr 2012
Location: Singapore
Posts: 158

Singapore 2002 Defender 90 Td5 SW Oslo Blue
My take is you have an earth fault to the 10AS unit or to the BBUS unit.

the BBUS (battery back up sounder), which is the high pitch alarm sounds when it thinks someone has cut the power to the 10AS alarm system. From the land of the most expensive land rover defenders on planet earth. At �125k for a XS 110 csw and you get to own it only for 10yrs! Please find me a good reason to stay on this island.
Post #322806 10th Apr 2014 4:02am
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