FORD 2003 Explorer v.3 - Manual (Page 91)

Programming spare keys
You can program your own coded keys to your vehicle. Please read and
understand the entire procedure before you begin.
Tips:
• A maximum of eight keys can be coded to your vehicle.
• Only use 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 no previously programmed coded keys are available, you must take
your vehicle to your dealer to have the spare key(s) programmed.
1. Insert a previously programmed
coded key into the ignition.
2. Turn the ignition from the 1 (LOCK) position to the 3 (ON) position.
Keep the ignition in the 3 (ON) position for at least one second, but no
more than 10 seconds.
3. Turn the ignition to the 1 (LOCK) position and remove the coded key
from the ignition.
4. Within ten seconds, insert the second previously coded key into the
ignition.
5. Turn the ignition from the 1 (LOCK) position to the 3 (ON) position.
Keep the ignition in the 3 (ON) position for at least one second, but no
more than 10 seconds.
6. Turn the ignition to the 1 (LOCK) position and remove the second
previously programmed coded key from the ignition.
7. Within twenty seconds of removing the previously programmed coded
key, insert the new unprogrammed key into the ignition.
8. Turn the ignition from the 1 (LOCK) position to the 3 (ON) position.
Keep the ignition in the 3 (ON) position for at least one second but not
more than 10 seconds.
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Locks and Security
91