Ford 1998 Mustang Owner's Manual page 62

Controls and features
1. Insert the first previously programmed
SecuriLock
ignition from OFF to RUN (maintain ignition in RUN
for at least one second).
2. Turn ignition to OFF and remove the first
SecuriLock
3. Within five seconds of turning the ignition to OFF,
insert the second previously programmed
SecuriLock
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
5. Within 10 seconds of turning the ignition to OFF,
insert the unprogrammed SecuriLock
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
6. To program additional SecuriLock
this procedure from step 1.
If the programming procedure was successful, the
new SecuriLock
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
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
62
key into the ignition and turn the
key from the ignition.
key into the ignition and turn the
key from the ignition.
key.
key(s) will start the vehicle's
key(s) will not operate the
key(s) programmed.
key (new
key(s), repeat