Hi all

Wonder if anyone can help me? I have an R-reg V8i ES Disco on which the remote and central locking packed up a few months ago. I now have a much bigger problem in that the immobiliser seems to be permanently 'on', and I can't go anywhere. Are the two related, is the problem likely to be with the key or a fuse or something more seriously electrical, and is there any way I can bypass the immobiliser permanently? At the moment I have to short the battery.

Thanks for any suggestions!
Martin

Hi
Did you try that? : (It's from "Discovery II Owner's handsbook", it was'nt a big help for me cause I was dumb enough to lose the code)

ENGINE IMMOBILISATION
Engine immobilisation is an important aspect of
the security system and includes a feature
known as ‘passive immobilisation’. This is
designed to safeguard the vehicle from theft,
should the driver forget to lock the doors and
prevents the engine from being started unless
the GENUINE handset key is inserted into the
starter switch. Engine immobilisation is
automatic whenever any of the following
conditions occur.
•The vehicle is locked using handset or key.
•Thirty seconds after the starter switch has
been turned off AND the driver's door
opened.
•Five minutes after the starter switch is
turned off, or the alarm system is disarmed.
NOTE: The engine will be re-mobilised
automatically whenever the genuine handset
key is inserted into the starter switch and
turned to position ‘II’.
Emergency key access
If the handset is damaged, or fails to operate,
the engine can be re-mobilised by using the key
to enter a unique four number emergency key
access code. The code is recorded on the
Security Information card and is entered as
follows:
1. Ensure that all doors are
closed, then using the key turn
the driver's door lock to the
UNLOCK position (towards the
front of the car) and hold in
this position for at least 5
seconds until the alarm sounder sounds once).
Then return the key to the centre position. It is
now possible to use the key to enter the
separate numerical values of the four numbers
that make up the emergency key access code.
2. Enter the FIRST number of
the code.
If the first number is
4, turn the key (towards the
front of the car) to the UNLOCK
position 4 times. Ensure the
key is FULLY returned to the
centre position after each turn.
IMPORTANT INFORMATION
When entering a code:
•ENSURE each key movement is carried
out with care and precision and turned
to the full extent of its travel.
•After turning the key to either the lock
or unlock positions, make sure it is
FULLY returned to the centre (vertical)
position.
•An interval of 10 seconds or more
between key turns, or the key being
held in a locked or unlocked position
for 5 seconds or more will cancel an
entry attempt, in which case you must
start again with operation 1.


 
Hi, I dont know from the thread if you got this resolved. I had exact same problem on the exact same vehicle. Behind the centre of the dash is the immobiliser unit, sometimes known as a "spider" looks like a smartie tube except black in colour, when un plugged, you can either buy a plug to bypass it. They are available on e.bay and from a main dealer, less than £10 or you can remove the plug, cut the immobiliser off and join 3 pairs of wires together, (they are all black) but it can be easily worked out from a picture. Took me around 2hrs and was pretty straight forward. Central locking still works fine from the key.

If you need any more info let me know.
 
Hi, I dont know from the thread if you got this resolved. I had exact same problem on the exact same vehicle. Behind the centre of the dash is the immobiliser unit, sometimes known as a "spider" looks like a smartie tube except black in colour, when un plugged, you can either buy a plug to bypass it. They are available on e.bay and from a main dealer, less than £10 or you can remove the plug, cut the immobiliser off and join 3 pairs of wires together, (they are all black) but it can be easily worked out from a picture. Took me around 2hrs and was pretty straight forward. Central locking still works fine from the key.

If you need any more info let me know.

Greeting
.....put please the links with the ebay place to buy the plug and if you can the picture or tutorial with the bypassing method.......(this one is not in the w.shop manual)
 
Thanks mate........but are you sure that it's the same for Disco II......because that was all about(unfortunately I don't have the Disco I manuals)

No it doesn't work on the disco 2. The disco 2 has an ecu. It does work on the disco 1 pre-DDS. ie the ones with spiders.
 
Thanks, I'll check the manuals if it fits for disco II to............in my ignorance, when I saw V8 I supposed that it's a DII...... I missed the "D I" from the title.......sorry
 
............we were writing in the same time........It's clear now.......too much lager at this hour ......sorry
 
here's the pic of the plug I used, it is 6 wires, if you cut off the spider plug and lie it the exact same way you can work out which ones to join,,

Cheers Chester
 

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