2000 Ford Focus Owner's Manual - Page 74

Controls and features Procedure to program spare SecuriLockT keys New SecuriLockT keys must have the correct mechanical key cut for your vehicle. Conventional (non SecuriLockT) keys cannot be programmed to your vehicle. The correct type of SecuriLockT key for your vehicle is identifiable by the alphanumeric characters stamped on the key blade. The SecuriLockT key identification for your vehicle is: one letter of the English alphabet followed by the number 1" (for example, S1" or I1" on the key blade indicate you have the correct type of SecuriLockT key). If the SecuriLockT key does not have this information stamped on the key blade, the key will not operate your vehicle. You will need to have two previously programmed SecuriLockT keys and the new unprogrammed SecuriLockT key readily accessible for timely implementation of each step in the procedure. Please read and understand the entire procedure before you begin. 74