Immobiliser

Boxer · Oct 12, 2022

Long time no post.

Defender 90 CSW 300tdi.
Factory fitted alarm and immobiliser.
A while ago I fitted the spyder bypass wiring, then (when the aux batteries for the alarm system finally gave up (2am) I disconnected the klaxon thing).
Subsequently I have still needed the fob to be on the keyring to start it due to the coil in the steering column.
While I was away recently, I leant the 90 to a friend who must have tried to set the alarm by pushing fob buttons.
Couple of times since it has taken a while to recognise the fob. This morning it's given up completely and won't start. no solenoid actuator power and I assume no fuel solenoid power (bypassed this ages ago with a new supply). Also a flashing engine management light. Running a wire to the solenoid from the battery gets it going with ignition on. Before I wire in a 'Start' button, does anyone have any suggestions?

slomofo · Oct 12, 2022

Change the fob battery

Al2O3 · Oct 17, 2022

slomofo said:
Change the fob battery

What he said ^^
The batteries don't last forever and when they go you get the symptoms you described.

Boxer · Oct 17, 2022

changed battery old one was showing 3 volts. still not having it.

Al2O3 · Oct 17, 2022

Boxer said:
changed battery old one was showing 3 volts. still not having it.

Hmmm, I think they can lose synchronicity somehow when the battery goes low. I've had this happen to me when I've changed the battery, but I can't remember what I did to get it working again.

I'll have a think! Do you have both fobs?

Boxer · Oct 18, 2022

Yea it has to do with putting the code (don't have it but can get it from LR dealers) in using the ignition key and the door I think. Don't have both fobs. It's working fine ATM just flashing engine warning light and steady red light on dash.

Al2O3 · Oct 18, 2022

Boxer said:
Yea it has to do with putting the code (don't have it but can get it from LR dealers) in using the ignition key and the door I think. Don't have both fobs. It's working fine ATM just flashing engine warning light and steady red light on dash.

I think I've used my second fob before and then the other one has worked. I've also done the ignition key and door technique to get the code sorted. I've got the instructions in my handbook, but I suspect neither of those things are any use to you

Boxer · Oct 18, 2022

Hey it's an old piece of Landrover electronics. If it's broke it's broke. I have a work around so I will look into a new fob. Thanks for the help though.

Al2O3 · Oct 18, 2022

Boxer said:
Hey it's an old piece of Landrover electronics. If it's broke it's broke. I have a work around so I will look into a new fob. Thanks for the help though.

No bother, good luck

slomofo · Oct 18, 2022

Boxer said:
Hey it's an old piece of Landrover electronics. If it's broke it's broke. I have a work around so I will look into a new fob. Thanks for the help though.

I re-synced mine by pressing lock/unlock button on my new fob until the hazards flashed and the red dash telltale was rapid flashing. Stuck the key in the ignition, fired up and all was well…..

Might be the solution to your ills, maybe not - but just a thought….

Immobiliser

Boxer

Active Member

slomofo

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Al2O3

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Boxer

Active Member

Al2O3

Well-Known Member

Boxer

Active Member

Al2O3

Well-Known Member

Boxer

Active Member

Al2O3

Well-Known Member

slomofo

Well-Known Member

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