My son in-law has a 'S' Reg Transit diesel. He has just rang to say that the key is acting like his spare one which is not chipped, resulting in the engine not starting. When he turns the ignition key the oil and battery lights come on as normal and the Immobiliser light starts to flash, but the engine does not turn over.
I am told there is a sequence/method of bypassing the chip in the key to start it, can anyone please help.