Lincoln 2010 MKX Owner's Manual page 103

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 the 1 (off)
position to the 3 (on) position. Keep
the ignition in the 3 (on) position
for at least three seconds, but no more than 10 seconds.
3. Turn the ignition to the 1 (off) position and remove the first coded
key from the ignition.
4. After three seconds but within 10 seconds of turning the ignition to
the 1 (off) position, insert the second previously coded key into the
ignition.
5. Turn the ignition from the 1 (off) position to the 3 (on) position. Keep
the ignition in the 3 (on) position for at least three seconds, but no more
than 10 seconds.
6. Turn the ignition to the 1 (off) position and remove the second
previously programmed coded key from the ignition.
7. After three seconds but within 20 seconds of turning the ignition to
the 1 (off) position and removing the previously programmed coded
key, insert the new unprogrammed key (new key/valet key) into the
ignition.
8. Turn the ignition from the 1 (off) position to the 3 (on) position. Keep
the ignition in the 3 (on) position for at least six seconds.
9. Remove the newly programmed coded key from the ignition.
Locks and Security
103