I thought I'd create a post here because I had difficulty finding instructions for programming a transponder key and fob (purchased from eBay) for my Mom's 2004 4Runner. I managed to locate instructions for programming each so I'm going to post them here. You do not need to go to the dealer to program a transponder key for a 2004 (not sure about other years). This assumes you have at least one master key in your possession.
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The following instructions were located in a Toyota service bulletin PDF labeled T-BE4022 - LC120 linked to by nhlpat in a forum post at toyota120.com
Programming a new transponder key:
- The driver door is closed
- Key is not inserted in ignition key cylinder
1) Insert the already registered master key into the ignition key cylinder
- Perform these steps within 35 seconds. The security light is off
2) Insert and remove the key into/from the ignition switch 5 times
3) Open and close the driver door 6 times. Remove the master key.
- Perform the following step within 10 seconds. Security light is on.
4) Insert the key to be registered into the ignition key cylinder and leave it alone.
- Security light is blinking
5) After 60 seconds, the key is registered (The security light will turn off)
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The following instructions were located at
Free Keyless Remote Fob Entry programming instructions, procedures for all automotive vehicles
Programming a new security fob:
1. Start with the key out of the ignition, drivers door is open all others closed and drivers door is unlocked.
2. Perform these steps within 5 seconds.
A. Insert the key into the ignition(Do NOT Turn) Pull key out.
B. Insert the key into the ignition(Do NOT Turn) Pull key out.
3. Perform these steps within 40 seconds.
A. Close then open the drivers door.
B. Close then open the drivers door.
C. Insert the key into the ignition(Do NOT Turn) Pull key out.
4. Perform these steps within 40 seconds.
A. Close then open the drivers door.
B. Close then open the drivers door.
C. Insert the key into ignition and leave it in ignition.
D. Close the drivers door.
E. Turn the ignition to ON (Do NOT Start) then back to OFF.
F. Remove the key from the ignition.
5. Within 3 seconds, the power door locks should lock then unlock 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 remote simultaneously for 1.5 seconds.
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 lock and then unlock once indicating successful programming. If
the door locks cycle twice, repeat steps A and B in step 6 as the remote was
not accepted.
C. Repeat steps A and B in step 6 for each new remote.
7. Open drivers door.
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Hopefully those steps will help folks program their replacement keys and fobs.
Drivie