Before I switch blades should I not be able to insert the current H&H key in the door of the H&H and use the Linley FOB (which could be the FOB that was meant for the H&H) to sync the locks?
With all that being said, does anyone have the definitive method of syncing key FOB to central locking? I’ve searched online and there are many ways suggested...... anyone have the balls on, money back sure to work method?
Yes, that's what I was getting at above. Put the H&H key in the H&H door lock and turn to lock, hold there, while holding press and hold the lock button on the Linley fob until the light starts to flash faster, release the fob button and turn the key back to centre. Then turn the key to unlock and hold there, press the unlock button on the Linley fob and hold until the light flashes faster, release the button on the fob, then turn the key back to centre. Remove key from the door lock and try pressing a button on the Linley fob. If the fob is correctly coded to the BeCM and the sync has worked then the fob should operate the central locking.
You can then prove you got them the wrong way round by doing the same with the Linley key and H&H fob in the Linley door. If you haven't tried this method (which is the method I was shown in confidence by the Service Manager at my LR main dealer as this is what they normally do and then charge people the coding fee), then try it first without swapping the locks/fobs in case you got them correct and just haven't used the correct sync method.
Rather than risk damaging the fobs, I'd swap the locks over if it were me...