Programing new keys and leyless entry
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Senior User
Joined: Jun 2006
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From: Toasty FLORIDA
Programing new keys and leyless entry
I heard that you need 2 working keys in order to reprogrma a third key for the 98 Expedition is that true? and how hard is it to program the remotes.
Senior User
Joined: Jan 2001
Posts: 242
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From: Chippewa Falls, WI
If you have an early 98 (like me) you can program a new key with only one working key. For later 98 and on, you need two working keys. The difference is PATS I vs. PATS II - not sure what the cutoff date is.
The procedure is easy:
1. Insert a working key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the working key and, within 15 seconds, insert the new key and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming the key into the vehicle.
5. Don't attempt to start the vehicle with any key for at least 1 minute.
For later 98 and on, insert the second working key per steps 1 and 2 and then move on to step 3.
The procedure is easy:
1. Insert a working key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the working key and, within 15 seconds, insert the new key and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming the key into the vehicle.
5. Don't attempt to start the vehicle with any key for at least 1 minute.
For later 98 and on, insert the second working key per steps 1 and 2 and then move on to step 3.
Senior User
Joined: Jan 2001
Posts: 242
Likes: 2
From: Chippewa Falls, WI
Programming remotes:
Note: It is necessary to have ALL (maximum of four-original and/or new) of your remote transmitters available prior to beginning this procedure
1. Insert a key in the ignition and turn from 3(Off) to 4(On) eight times in rapid succession (within 10 seconds) with the eighth turn ending in the 4(On) position.
2. The doors will lock/unlock to confirm that programming mode has been entered.
3. Within 20 seconds, program a remote transmitter by pressing any button on a transmitter. The doors will lock/unlock to confirm that the remote transmitter has been programmed. (If more than 20 seconds pass before pressing a remote transmitter button, the programming mode will exit and the procedure will have to be repeated.)
4. Repeat the previous step to program additional remote transmitters. The doors will lock/unlock to confirm that each remote transmitter has been programmed.
5. When you have completed programming the remote transmitters, turn th ignition to 3(Off) or wait 20 seconds. Again the doors will lock/unlock to confirm programming has been completed.
Note: It is necessary to have ALL (maximum of four-original and/or new) of your remote transmitters available prior to beginning this procedure
1. Insert a key in the ignition and turn from 3(Off) to 4(On) eight times in rapid succession (within 10 seconds) with the eighth turn ending in the 4(On) position.
2. The doors will lock/unlock to confirm that programming mode has been entered.
3. Within 20 seconds, program a remote transmitter by pressing any button on a transmitter. The doors will lock/unlock to confirm that the remote transmitter has been programmed. (If more than 20 seconds pass before pressing a remote transmitter button, the programming mode will exit and the procedure will have to be repeated.)
4. Repeat the previous step to program additional remote transmitters. The doors will lock/unlock to confirm that each remote transmitter has been programmed.
5. When you have completed programming the remote transmitters, turn th ignition to 3(Off) or wait 20 seconds. Again the doors will lock/unlock to confirm programming has been completed.
New User
Joined: Nov 2005
Posts: 13
Likes: 0
For the later models, couldn't you just remove the 1st key then reinsert it like it was a different key? Kind of like tricking the computer? Just curious, I bought my truck (pre-owned) and the dealer only had 1 key and 1 remote.
5th Wheeling
Joined: Aug 2006
Posts: 35
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Originally Posted by roksngr
For the later models, couldn't you just remove the 1st key then reinsert it like it was a different key? Kind of like tricking the computer? Just curious, I bought my truck (pre-owned) and the dealer only had 1 key and 1 remote.
Nope, you need 2 different keys, the computer knows.
The dealer should have provided you with at least 2 keys. They use a NGS to program the second key.
New User
Joined: Mar 2010
Posts: 9
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If you have an early 98 (like me) you can program a new key with only one working key. For later 98 and on, you need two working keys. The difference is PATS I vs. PATS II - not sure what the cutoff date is.
The procedure is easy:
1. Insert a working key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the working key and, within 15 seconds, insert the new key and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming the key into the vehicle.
5. Don't attempt to start the vehicle with any key for at least 1 minute.
For later 98 and on, insert the second working key per steps 1 and 2 and then move on to step 3.
The procedure is easy:
1. Insert a working key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the working key and, within 15 seconds, insert the new key and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming the key into the vehicle.
5. Don't attempt to start the vehicle with any key for at least 1 minute.
For later 98 and on, insert the second working key per steps 1 and 2 and then move on to step 3.
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Senior User
Joined: Jan 2001
Posts: 242
Likes: 2
From: Chippewa Falls, WI
I assume there was a cutoff date or VIN number, but I don't know what it is. I figured out that mine was early 98 when I tried to program a new key with only one exiting key and it worked. I don't have the Expy any more and I don't have a record of the mfg date.
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