Obtain all keys for this vehicle. You must have two working programmed keys to do this procedure. 1. Insert first programmed key into ignition and turn ignition switch to ON for 3 to 15 seconds. Do not exceed 15 seconds. 2. Turn ignition switch to OFF and remove key. 3. Insert second programmed key into ignition and turn ignition switch to ON. You must do this within 15 seconds of removing first key. After 10 seconds the immobilizer warning lamp will illuminate and an audible tone will be heard. 4. Turn ignition switch to OFF and remove key. 5. Within 60 seconds insert new unprogrammed key into ignition and turn ignition switch to ON. 6. After 10 seconds an audible tone will be heard and the immobilizer warning lamp will illuminate for 3 seconds. 7. Turn ignition switch to OFF and remove key. 8. For each additional key to be programmed you must start at step 1 and follow procedure again. You can have up to 8 keys programmed to vehicle.