Here are the instructions for programming the 99-02 4Runner Keyless Entry factory remotes:
1. Start with the following conditions: you are in the vehicle
a. Key is out of the ignition
b. Driver's door is open ( all other doors are closed)
c. Driver door is unlocked (other door locks don't matter)
2. Insert the key into the ignition (don't turn it) and pull it out.
3. Perform these steps within 40 seconds:
a. Cycle the power locks 5 times. Use an even pace and try
to go relatively fast.
b. Close, then open the drivers door.
4. Perform these steps within 40 seconds:
a. Cycle the power locks 5 times (same as before).
b. Turn the ignition to ON then back to OFF.
c. Turn the ignition to ON then back to OFF.
d. Remove the key from the ignition.
5. Within 3 seconds, the power door locks should cycle (automatically)
indicating successful entry into programming mode. Return to step 1
if the locks do not cycle at this point.
6. Perform these steps within 40 seconds:
a. Press the LOCK and UNLOCK buttons on the transmitter
simultaneously for 1 second.
b. Immediately after letting go of the lock and unlock buttons,
press the lock button by itself and hold for 2 seconds.
Within 3 seconds, the door locks should cycle ( LOCK then
UNLOCK) once-- indicating successful programming. If
the door locks don't cycle, or cycle twice. Repeat steps
6a and 6b--this remote has not been accepted.
c. Repeat steps 6a and 6b for EACH transmitter that will
operate the vehicle. Including any old transmitters.
7. Close the driver door.
I hope this helps.
1998 Tacoma TRD - Bought back by Toyota in 2/13 for frame rust.
Currently driving a 2000 4Runner and loving it!