I recently bought two Pats keys for my 2000 Ford Excursion from a locksmith on Ebay. Both keys work mechanically. They were cut by code before being sent to me. I was able to program one of the keys after several attempts, but the other key will not program. Is it likely that the second key is defective? Are there any other techniques I can try to program this key? I tried wrapping the keys in aluminum foil between steps because I was told that the truck's computer is sometimes confused by nearby keys. When I bought the truck, it only had one key. When a local locksmith made a second key, I asked him to remove any other keys in the computer (there were two).
Thanks for any help/information, Norris