Re: need new remote and key?
To verify that the key is the problem and not something else, insert key in ignition and turn to the on position. If the "theft" light doesn't go out after a few seconds and continues to blink, the key isn't matched to the anti-theft system.
Its not possible to disable the system. As stated above, you will have to have a locksmith or Ford dealer reprogram the system. Not many locksmiths have the device to do this so check first. You can't just take the key somewhere to have it programed, the vehicle and key have to be together. Actually, the key isn't programed, the vehicle is programed to recognize the key.
If the key you have actually contains a chip, the head of the key should be covered in plastic and the hole in the head should be somewhat rectangular and closer to one side than the other. If the hole is centered in the key head, it does not contain a chip and is useless for anything other than unlocking the door manually.
Some Ford dealers charge an exorbitant price for the chipped keys. If they want more than about 25 bucks, check internet for one. Lot available for $20 or less.
If you are paying a locksmith or dealer to reprogram the system, have two keys made. With 2 keys, you can program additional keys yourself. Its not a bad idea to keep 3 keys. That way you can program a key yourself if you lose one. With only 1 key, you'll be back to the locksmith or dealer to get that second key to work.