Obtaining your Keyless Entry Code

the key fob? or radio remove or what?
remote to what.

the operators manual covers this , under car keys.
the car came with 2 Fobs. lost them both now>?
RKE its called, (makes looking fact more easy)
is this car with SKIS Immoblizer option> yes./no
if yes.
SENTRY KEY IMMOBILIZER SYSTEM - IF
EQUIPPED
im reading your operators guide now.
lost that too>?
Duplication of keys may
be performed at an authorized dealer (or locksmiths) or by using the
Customer Key Programming procedure.

DIY, takes 1 key , good, called a valid key, in the below text.
You can program new keys to the system if you have two
valid keys by doing the following:
1. Cut the additional Sentry Key Transponder blank(s) to
match the ignition switch lock cylinder key code.
2. Insert the first valid key into the ignition switch and
turn the ignition switch ON for at least 3 seconds but no
longer than 15 seconds. Turn the ignition switch OFF and
remove the first key.
3. Insert the second valid key and turn the ignition
switch ON within 15 seconds. After ten seconds, a chime
will sound and the SKIS indicator light will begin to
flash. Turn the ignition switch OFF and remove the
second key.
4. Insert a blank Sentry Key into the ignition switch and
turn the ignition switch ON within 60 seconds. After 10
seconds, a single chime will sound. The SKIS indicator
light will stop flashing, turn on for 3 seconds; then turn
off.
The new Sentry Key has been programmed. Repeat this
process to program up to a total of 8 keys.


did i guess right, the Key FOB RKE,
remove key entry fob.?

to reprogram new key first you need to use 2 factory program keys.place first factory key in the ignition first turn ignition on for 3 seconds. then turn off ignition then install second factory in the ignition on position for 10 seconds.when immobilizer warning lamp begins to flash a acoustic signal is emitted.within 60 seconds. switch ignition off and remove key.then insert new key and switch on for 10 seconds a acoustic signal is emitted and immobilizer warning lamp remain illuminated for 3 seconds indicating programming completed.if all fails dealership has to reprogram new keys.

Deactivating/activating the autolock feature...
Before following the procedure, make sure that the ignition is OFF and all vehicle doors and the liftgate window are closed.
You must complete steps 1-5 within 30 seconds or the procedure will have to be repeated. If the procedure needs to be repeated, you must wait 30 seconds.
1. Turn the ignition key to ON.
2. Press the power door unlock control three times.
3. Turn the ignition key from ON to OFF.
4. Press the power door unlock control three times.
5. Turn the ignition back to ON. The horn will chirp.
6. Press the unlock control, then press the lock control. The horn will
chirp once if autolock was deactivated or twice (one short and one long
chirp) if autolock was activated.
7. Turn the ignition to OFF. The horn will chirp once to confirm the
procedure is complete.

Also, if your vehicle is equipped with a coded-key anti-theft system. Only the correct key will be able to start your vehicle. If your keys are lost or stolen, you must take your vehicle to a Ford/Lincoln-Mercury dealership for re-programming.
Programming additional keys If you need additional keys electronically coded for your vehicle, spares can be purchased (a maximum of 16 keys can be programmed). To program a new key, perform the following procedure:
1. With the coded key in the ignition, turn the ignition from ON to OFF.
2. Within 15 seconds of turning ignition off, insert the new coded key
into the ignition and turn it from OFF to ON or START. If successful, the
THEFT indicator light will illuminate for two seconds. Repeat procedure
for all new keys.
If key coding fails, the THEFT indicator light will flash.
Coding failure can be caused by any of the following:
² The new key was not inserted into the ignition within 15 seconds.
² 16 keys have already been programmed.
² The new key does not have an electronic code.

Other details can find in the 1998-Lincoln-Navigator-Owners-Manual

Good luck (remember comment and rated this).

1-insert and remove key from ignition two times

2-close and open driver door two times

3-insert and remove key once from ign.

4-close and open drvr door twice

5-insert key into ign.,then close driver door

6-turn key to on (not start) then off, twice this is rewrite mode,have all remotes to reprogram it will clear any lost remotes.

7-remove key from ignition,the door locks should cycle twice.if not start over.it may take a few tries.

8-press lock/unlock together and hold for a second

9-release,and press lock on remote,the door locks will cycle confirming program.continue to do other remotes you have,steps 8 and 9.if only one in possession,you are done. To end mode open door or insert key into ignition.

You'll need to follow the steps with no more than a 1-2 second delay between each step.. hope it works

Here is the factory procedure to program a new key(s), I recomment only factory keys, you need to use the working key to do the procedure;
1. Insert a previously programmed coded key into the ignition.

2. Turn the ignition from the 3 (OFF) position to the 4 (ON) position. Keep the ignition in the 4(ON) position for at least one second, but no more than 10 seconds.

3. Turn the ignition to the 3 (OFF) position, and remove the coded key
from the ignition.

4. Within ten seconds of removing the previously programmed coded key, insert the other previously programmed coded key into the ignition.

5. Turn the ignition from the 3 (OFF) position to the 4 (ON) position. Keep the ignition in the 4 (ON) position for at least one second but not more than 10 seconds.

6. Turn the ignition to the 3 (OFF) position, and remove the second key from the ignition.

7. Within twenty seconds of removing the previously programmed coded key, insert the unprogrammed key (new/valet key) into the ignition.

8. Turn the ignition from the 3 (OFF) position to the 4 (ON) position. Keep the ignition in the 4 (ON) position for at least one second.

9. Your new unprogrammed key is now programmed. If the key has been successfully programmed it will start the vehicle’s engine and the theft indicator light will illuminate for three seconds and
then go out. If the key was not successfully programmed, it will not start your vehicle’s engine and the theft indicator light will flash on and off rapidly. If failure repeats, bring your vehicle to your dealer to have the
new key(s) programmed.

To program additional new unprogrammed key(s), repeat this procedure
from step 1 for each additional key