Engine disabled, keys not working, tried the guide “Re-synching the Range Rover P38 diesel engine with the Solved - BECM using a Nanocom” no luck

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DollyBird

Member
Posts
22
Location
Wigtown
Hi y’all
- when needed a tow for eas fault (now fixed), rac driver opened the keys and was messing with them, i asked him not to but he wouldn’t listen he said he had to run through his checklist ;( …he said there were loose metal pieces inside both keys. Key 1 he said the metal piece (see arrow) is missing so that one is not working at all
- all key batteries had good life
- he put Key 2 back together in a hack job and it worked ok with the remote buttons working and car starting fine
- yesterday went to start the car and Key 2 would not work to open the doors (no red light coming on), buttons not working, unlocked the car and it wouldn’t start, went out and used the eka code method in the car door, it worked and the car started
- got home and sat in the car for 10 min with the key out and car unlocked while on phone. got out locked the car w/key
- this morning was prepared to do the same eka code in door and it worked to open all doors but this time engine wouldn’t start (and cannot press button on remote because remote doesn’t work)
- then tried grrrr’s guide “Re-synching the Range Rover P38 diesel engine with the BECM using a Nanocom” but the correct immobilization code was already in there (the eka code wasn’t so i put that in but i’m not sure if i have the right version becm bc the version number is smudged off)
- in nanocom also tried BECM/Utility/Disarm with eka code that didn’t work
- then in Alarm i tried to disable the immobilizer, eka and alarm and that put it into ‘diagnostics mode’ so i changed them all back to enabled except alarm and “write setting” but it was still showing diagnostics mode on the dash until i tried “disarm” again, it didn’t work but it got rid of the diagnostics mode

1) just trying to get to work tomorrow, was planning to order a new key from Les but any help to start the car in the short term would be much appreciated

2)in terms of the keys (please see picture)
- does anyone know if the metal clip in Key 2 is in the right place (this is how the rac driver put it in) this is the piece missing from the Key 1, seems like it’s not touching the top of the battery when it closes and no idea what its supposed to touch on the other side…i think if i can fix this i can push the remote button when the dash asks for that, that was working yesterday
- is the little rubber thing missing from key 2 important?

Somehow i guess sitting in the car with the key out of the ignition and doors unlocked messed things up

Thanks a bunch ~ dolly
 

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Last edited:
Hi y’all
- when needed a tow for eas fault (now fixed), rac driver opened the keys and was messing with them, i asked him not to but he wouldn’t listen he said he had to run through his checklist ;( …he said there were loose metal pieces inside both keys. Key 1 he said the metal piece (see arrow) is missing so that one is not working at all
- all key batteries had good life
- he put Key 2 back together in a hack job and it worked ok with the remote buttons working and car starting fine
- yesterday went to start the car and Key 2 would not work to open the doors (no red light coming on), buttons not working, unlocked the car and it wouldn’t start, went out and used the eka code method in the car door, it worked and the car started
- got home and sat in the car for 10 min with the key out and car unlocked while on phone. got out locked the car w/key
- this morning was prepared to do the same eka code in door and it worked to open all doors but this time engine wouldn’t start (and cannot press button on remote because remote doesn’t work)
- then tried grrrr’s guide “Re-synching the Range Rover P38 diesel engine with the BECM using a Nanocom” but the correct immobilization code was already in there (the eka code wasn’t so i put that in but i’m not sure if i have the right version becm bc the version number is smudged off)
- in nanocom also tried BECM/Utility/Disarm with eka code that didn’t work

1) not sure what else to try to be able to get to work tomorrow, was planning to order a new key from Les but any help to start the car in the short term would be much appreciated

2)in terms of the keys (please see picture)
- does anyone know if the metal clip in Key 2 is in the right place (this is how the rac driver put it in) this is the piece missing from the Key 1, seems like it’s not touching the top of the battery when it closes and no idea what its supposed to touch on the other side…i think if i can fix this i can push the remote button when the dash asks for that, that was working yesterday
- is the little rubber thing missing from key 2 important?

Somehow i guess sitting in the car with the key out of the ignition and doors unlocked messed things up

Thanks a bunch ~ dolly
Is the metal strip touching the top of the batteries as looks in the photo as this will short them out, it should only touch the batteries underneath and then connect to a piece on the board. I can't see this bit on either board.
Google PaulP38.com. Sure he's got photos of the inside of a keyfob
 
You cannot enable or disable the Immobiliser & EKA unless the car is already disarmed.

Also when entering the EKA using Nanocom are you using the screen below (BECM Utility) ? I think the ingition needs to be on, rather than with the Instruments showing diagnostic mode, but not 100% sure.

The screen you show above is to view the EKA on unlocked BECM's only.

1722774355630.png
 
Having all the bits of the key internals is a start, only one of them looks right from here.
I have had instances where a key just WILL NOT work even though nothing has been changed, the key has not been opened/dissected battery refreshed etc. etc.
It has appeared that whenever this happens if I go and "Clear RF Memory" in Nanocom the non-responding fob suddenly springs to life. It presumably is because the buffer of "rolling codes" between the RF receiver and the fob needs to be reset.
Just a thought. :)
 
The boards above are what touch the batteries
Yes it was the little metal bit that was bent out of shape and i couldn’t figure out how it was supposed to sit in the round plastic cup that holds the batteries..here is a picture of the lady holding that piece. once i fixed that and using your photos made sure the dot in your number 1 had contact with that, the key worked and the car started thank you! 🙏🙏 🥇
- since it started right up, looks like it was not a key synch issue
-now i really want to disable the immobilizer (the alarm is already disabled) just wondering what i did wrong last time that made it it go into diagnostic mode…if any nanocom owners can guide me, i will wait for their instructions thanks
 

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Is the metal strip touching the top of the batteries as looks in the photo as this will short them out, it should only touch the batteries underneath and then connect to a piece on the board. I can't see this bit on either board.
Google PaulP38.com. Sure he's got photos of the inside of a keyfob
It sure was and key working now thank you for the tip
 
View attachment 323110

Bridge shown above in left hand board. This is what the metal strip touches and the batteries the round one

You cannot enable or disable the Immobiliser & EKA unless the car is already disarmed.

Also when entering the EKA using Nanocom are you using the screen below (BECM Utility) ? I think the ingition needs to be on, rather than with the Instruments showing diagnostic mode, but not 100% sure.

The screen you show above is to view the EKA on unlocked BECM's only.

View attachment 323127
Hi yes i was using that screen with the keys turned to position 2. With the ignition on i just got “cannot communicate with ecu”…so with keys in in position 2 (after i got one key working by following the photos above)…
- i disabled the immobilizer…doing this kept throwing me into diagnostic mode so then
- went back into BECM/Disarm and after putting the eka code in that got me out of diagnostic mode and kept the immobilzer disabled

All is fine now and thank you to all of you gems of humans taking your precious time to help
 
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