The passive anti theft system call PATS requires a Ford key with a transponder chip in it. You can't just use any copied key. More than likely you have to go to the dealer and have the system reset and new keys programmed and made. Not cheap. If you lose keys often then buy extra keys from ebay with the chip in it and program the computer to recognize them. There is a procedure to get the computer to read them but I don't know it off the top of my head.
Last edited by whippersnapper02; 12-09-2008 at 04:10 PM.