1998 Ford Mustang Owner Guide 1st Printing - Page 62
1998 Ford Mustang Manual
Page 62 highlights
Controls and features 1. Insert the first previously programmed SecuriLock key into the ignition and turn the ignition from OFF to RUN (maintain ignition in RUN for at least one second). 2. Turn ignition to OFF and remove the first SecuriLock key from the ignition. 3. Within five seconds of turning the ignition to OFF, insert the second previously programmed SecuriLock key into the ignition and turn the ignition from OFF to RUN (maintain ignition in RUN for at least one second but no more than 5 seconds). 4. Turn the ignition to OFF and remove the second SecuriLock key from the ignition. 5. Within 10 seconds of turning the ignition to OFF, insert the unprogrammed SecuriLock key (new key) into the ignition and turn the ignition from OFF to RUN (maintain ignition in RUN for at least one second). This step will program your new SecuriLock key. 6. To program additional SecuriLock key(s), repeat this procedure from step 1. If the programming procedure was successful, the new SecuriLock key(s) will start the vehicle's engine. The theft indicator (located on the instrument cluster) will light for three seconds and then go out. If the programming procedure was not successful, the new SecuriLock key(s) will not operate the vehicle's engine. The theft indicator will flash on and off. Wait at least one minute and then repeat the procedure from step 1. If failure repeats, bring your vehicle to your dealership to have the spare SecuriLock key(s) programmed. 62