Programming Spare Securilock Keys; Procedure To Program Spare Securilock Keys To Your Vehicle - Mercury Grand Marquis 1998 Owner's Manual

Controls and features
Programming spare SecuriLock keys
Spare SecuriLock keys can be purchased from your dealership and
programmed to your SecuriLock anti-theft system (up to a total of
8 keys). Your dealership can program your new SecuriLock key(s) to
your vehicle or you can do it yourself using the following simple
procedure. To program a new SecuriLock key yourself, you will need
two previously programmed SecuriLock keys (keys that already
operate your vehicle's engine). If two previously programmed
SecuriLock keys are not available (one or both of your original keys
were lost or stolen), you must bring your vehicle to your dealership to
have the spare SecuriLock key(s) programmed.
Procedure to program spare SecuriLock keys to your vehicle
New SecuriLock keys must have the correct mechanical key cut for
your vehicle.
Conventional (non-SecuriLock ) keys cannot be programmed to your
vehicle.
You will need to have two previously programmed SecuriLock keys and
the new unprogrammed SecuriLock key readily accessible for timely
implementation of each step in the procedure. Please read and
understand the entire procedure before you begin.
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. If it is desired to program additional SecuriLock key(s), repeat this
procedure from step 1.
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