Add Duplicate Key (Requires two working keys):
1. Insert an existing key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the existing key and, within five seconds, insert a second key and turn it to ON (RUN) then back OFF.
4. Insert the new key before ten seconds have elapsed and turn it to ON (RUN). Leave it on for one second and turn back to OFF
5. The security light will light up for three seconds to indicate that the new key has been successfully programmed.

Step by Step Programming Instructions:

1. Turn ignition from OFF to RUN 8 times within 10 seconds, with the 8th time ending in RUN. Door locks will cycle to confirm programming mode.
2. Within 20 seconds press any button on first keyless remote. Door locks will cycle to confirm programming.
3. Within 20 seconds, press any button on second keyless remote. Door locks will  cycle again to confirm programming.
4. Turn ignition to OFF. Locks will again cycle to indicate end of programming mode.