I'm no expert, but that sounds like the factory immobiliser - if it is the problem, it gives you basically two options: - find the fault as to why the immo isn't working (fitting all keys, immobiliser boxes, etc etc etc) - get the immo removed from the ECU A friend of mine sorted out the immobiliser removal from the ECU for me in exchange for an amount of money (I can't remember how much, I'll check that with him too) if you want me to find out what he did?