Ford Focus Owner's Manual page 171

Programming spare integrated keyhead transmitter (IKT) keys
If you have intelligent access keys, refer to Programming spare
intelligent access keys in this section.
You can program your own integrated keyhead transmitters or standard
SecuriLock coded keys to your vehicle. This procedure will program
both the engine immobilizer keycode and the remote entry transmitter
portion of the IKT to your vehicle. Note: A maximum of eight coded
keys can be programmed to your vehicle; all eight can be IKTs with
remote entry functionality.
Tips:
• Only use integrated keyhead transmitters (IKTs) or standard
SecuriLock keys.
• You must have two previously programmed coded keys (keys that
already operate your vehicle's engine) and the new unprogrammed
key(s) readily accessible.
• If two previously programmed coded keys are not available, you must
take your vehicle to your authorized dealer to have the spare key(s)
programmed.
Please read and understand the entire procedure before you begin.
1. Insert the first previously programmed coded key into the ignition.
2. Turn the ignition from off to on. Keep the ignition on for at least three
seconds, but no more than 10 seconds.
3. Turn the ignition off and remove the first coded key from the ignition.
4. After three seconds but within ten seconds of turning the ignition off,
insert the second previously coded key into the ignition.
5. Turn the ignition from off to on. Keep the ignition on for at least three
seconds, but no more than 10 seconds.
6. Turn the ignition off and remove the second previously programmed
coded key from the ignition.
7. After three seconds but within 10 seconds of turning the ignition off
and removing the previously programmed coded key, insert the new
unprogrammed key (new key/valet key) into the ignition.
8. Turn the ignition from off to on. Keep the ignition on for at least six
seconds.
9. Remove the newly programmed coded key from the ignition.
2012 Focus (foc)
Owners Guide, 5th Printing
USA (fus)
Locks and Security
171