Another Key / Immobiliser / Alarm Problem!

[AmeR]

Ok.... so when I bought my car it only had the one key but the lock button had given up on it. I managed to source a Rav 4 key (internal) and reprogrammed it successfully. My only problem is that this new key won't start the car and now my old one won't either (used to but I have just been out tinkering when I should just leave well enough alone!!!!!   s:oops: :oops: s:oops:  )

I can't reprogramme the old key fob to work with it again as the lock button is required as part of the reprogramme sequence!! Does anyone know if I should be able to get it working with it???

Can anyone offer any advice on this?