Re: central locking
I think if you pull the battery out of these keys, then they need to be programmed back to you car. try this:
Within 6 seconds the ignition must be turned on and off again 4 times. This starts the programming mode. the turn signals will flash twice if you get it right! now press any button on the remote within 10 seconds. when the GEM accepts the key, it will beep at you. to get out of program mode just turn the ignition on, or don't do anything for at least 10 seconds.
if this doesn't help, then go see your Ford Dealer for a warranty claim.
Don't bother running...
....you'll only die tired!