2005 Ford Expedition Owner's Manual - Page 161

Locks and Security 4. Turn the ignition from the 3 (ON) back to 1 (OFF/LOCK) position in order to remove the second coded key from the ignition. 5. Within 10 seconds of removing the second coded key, insert the new unprogrammed key (new key/valet key) into the ignition and turn the ignition from the 1 (OFF/LOCK) to the 3 (ON) position [maintain ignition in 3 (ON) for at least three seconds, but no more than ten seconds]. This step will program your new key to a coded key. 6. To program additional new unprogrammed key(s), repeat this procedure from Step 1. If successful, the new coded key(s) will start the vehicle's engine and the theft indicator will illuminate for three seconds and then go out. If not successful, the new coded key(s) will not start the vehicle's engine and the theft indicator will flash on and off and you may repeat Steps 1 through 5. If failure repeats, bring your vehicle to your dealership to have the new spare key(s) programmed. 161 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus)