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hxk494

Member Since: 29 Apr 2013
Location: Edinburgh
Posts: 241

300Tdi alarm problems

Hi all.

I've got a 1996 Tdi 110, have had it on the road for about two years now and in all that time no problems with the factory fitted alarm/immobiliser (green box behind dash and metal box attached to front of battery box) - until 2 days ago when the alarm started sounding in the evening for no apparent reason (wasn't set when this happened), only silenced by disconnecting battery, it didn't respond to fob. Reconnected battery the next day (after charging it for good luck) and all seemed OK, until evening again when alarm started sounding, again disconnected battery and that silenced it. All seemed to be working as usual until the later triggering on the second day.

Any thoughts on where to start looking for a fix for this, or is removal/bypass a better plan? I've read plenty about the "spider" but get the impression this is the immobiliser not the alarm? Also, where is the sounder, can't see anything under the bonnet but may be tucked up tight behind nearside wing - really need to trigger it and listen to find out - would unplugging sounder be a short term fix or just bring more problems - apart from obvious difficulty of finding/accessing it?

Thanks,
Martin. 1996 300Tdi Defender 110

24th Nov 2020 4:03pm

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

Is it fitted with a bonnet switch? If so, try disconnecting it and see if that cures it. Bonnet switches can be a bit of a pain. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

24th Nov 2020 8:27pm

hxk494

Member Since: 29 Apr 2013
Location: Edinburgh
Posts: 241

it does have a bonnet switch, will try that and see if it makes a difference 1996 300Tdi Defender 110

24th Nov 2020 8:34pm

Pugit666

Member Since: 04 Mar 2020
Location: York
Posts: 43

1998 Defender 90 300 Tdi CSW Alpine White

I had exact same thing. Had already done spider mod, so that wasn’t the problem. In the end I unplugged the sounder. It’s very easy to find if you have a look.

26th Nov 2020 1:59pm

hxk494

Member Since: 29 Apr 2013
Location: Edinburgh
Posts: 241

thanks for the reply, I'll hopefully be able to spend some time on this over the weekend. 1996 300Tdi Defender 110

26th Nov 2020 2:23pm

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