Hi, all I have a 94 l Reg 200tdi discovery which has been fine until this evening. Went for. A out was fine when tried to start to come home, it wouldn’t turn over and immobiliser light was flashing amr 2106 box clicking away! I didn’t even realise it had an immobiliser. I don’t have the 4 digit code to reset if that works on a 200?! Also has no fob which again didn’t realise they had until reading advise on the issue! Managed to get home with a temp bypass, any help would be great?

Usherb 89 said:

Hi, all I have a 94 l Reg 200tdi discovery which has been fine until this evening. Went for. A out was fine when tried to start to come home, it wouldn’t turn over and immobiliser light was flashing amr 2106 box clicking away! I didn’t even realise it had an immobiliser. I don’t have the 4 digit code to reset if that works on a 200?! Also has no fob which again didn’t realise they had until reading advise on the issue! Managed to get home with a temp bypass, any help would be great?

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The security system on your model is set/unset via either the fob or the key in the drivers door lock and then operates a micro switch, so an iffy micro switch maybe, your owners hand book should give you more details, which I believe is was something like turning the key fully and and wait a second so the micro switch operates to set.. same again to unset.
Its a long while ago since there was a discussion on the disco 200 series security system

The system doesn't have the emergency access code, that was introduced with the 300 series system.

Ha ha yeah I was shock to have a security issue with a 200! It appears to be a dodgy connection on one of the fusible links in the engine compartment harness......

Usherb 89 said:

Ha ha yeah I was shock to have a security issue with a 200! It appears to be a dodgy connection on one of the fusible links in the engine compartment harness......

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If so then theres kit available to replace the lot, or you can install the later disco engine bay fuse box which has replaceable links inside.