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The only place for a coil spring is up Zebedee's arse
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So i went back to the range tonight to rehook up the battery as left it unhooked for the night. Plugged it all in, got in engine disabled, then i thought, just move it a little..... Alarms started going off, no sound though as its been disconnected as you said. Got out locked it, unlocked with the key put the key in the ignition..... START ENGINE.... The beast lives!!! Marty I cannot thank you enough the only person to even mention the rf signal being interupted and that was my problem. Legend

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No problem, good to hear it's all up and running again! Another one down to RF interference... Don't park there again :)

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I think ill change dog groomers now haha

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Glad you got it sorted but it does sound like you need to look into why the EKA couldn't be entered before the next time....... Still can't work out why it disabled itself after being locked and unlocked on the key though.

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I'd say it depends on what RF receiver was actually fitted as the replacement. If it was a Gen3 receiver, then yes, a bit of a head scratcher, but there are a couple of explanations I can think of.

If it's a Gen2 receiver that a previous owner bought because it was 'upgraded' then it's still prone to interference (but not as bad) and I've heard that the interference to the BECM will cause all sorts of strange things with EKA etc. I am guessing that the RF receiver data works on an interrupt to the code in the BECM CPU - so that when a transmission from the FOB is received, the BECM then does the number crunching on it processes lock/unlock commands if they are valid. My best guess is that if there is interference then on Gen2 receivers, this will then end up on the data line to the BECM which will then interrupt what it's currently trying to do - eg listen for the EKA.

It could also be the passive immobiliser is still turned on and it re-immobilised the vehicle, and then the mobilisation code from the fob wasn't able to be received due to the interference, so then it would just sit there and ask for the code.

Either way, I would at some point be testing the door latch microswitches, as if one of them is faulty/intermittent, then that also won't help matters!

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Ok so what steps do i take to test the door latch micros?

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Ok so what steps do i take to test the door latch micros?

Marty's door latch test instructions are here:
https://rangerovers.pub/topic/5-info-front-door-latch-tests