Central Locking - Immbilisor issues on D1

**Peppercorn** · 29th October 2013, 09:31 AM

Hi, Can anyone help??

I have a 98 Tdi300 Disco with issues. I have been reading all day but cannot really find where the problem lies.

The problem. Firstly, the central locking via the FOB was erratic until it finally died. I replaced the battery in the FOB without helping!

Then, the bloody car wouldn't start unless I locked the car with the key and then unlocked it. That works "Most" times!

When I stop the engine and get out of the car and back in again the immobiliser stops the engine cranking again and I have to get out and lock the car and unlock it to get it to crank.

I have pulled out the immobilisor and checked it and it seems good. I checked the solder joints and reheated a few iffy ones but, nothing has changed.
I have "looked at" the relays and they all seem OK but, I don't know how to check relays to prove they are OK!
All the fuses are OK and now I'm lost! The Unit is a Lucas 10AS ECU. Also, this car doesn't seem to have the "Spider" behind the radio as many have written about. I have pulled the dash out for nothin!!

I'd be happy to hard wire the Unit to bypass the immobilisor but, cannot find anyone who shows the way.

Anyone help please??

markass · 4th December 2013, 12:54 PM

I'm in pretty much the same boat as you, having lost my fob on a V8 D1.

It looks as though the Lucas AS unit is not tied to the vin of the car, so it may be possible to swap it out to another unit with different fobs.

**dadsDisco1** · 4th December 2013, 01:28 PM

I have a 96 donor car I've used for suspension and steering on my 97 D1, maybe it can help you, I only have the one key/remote but all is in perfect working order bar those stupid little rubber buttons wore out (as have the rubbers on both my 97 remotes)