hi william try this,put the ignition key in the ignition & turn to position 2,turn this 4 time's in six second's(make sure that the battery is new)when you have turn the key four time's you will hear a audible sound (only if original stereo fitted)when this happen's remove key & press the lock button this will programe the key back into central locking (if you have changed the stereo or there's no sound after key sequence,keep turning key to position 2, but keep an eye on the red led by clock),this will stop flashing,but still illuminanted, this is when you can remove key & press the lock button, hope this help's
steray, January 2008