Are you having trouble with your key fob for your classic 90s JDM Toyota Supra? It’s a common issue, especially with these older vehicles. The good news is that programming a replacement or existing key fob for your Supra can often be done at home, saving you a trip to the dealership. This guide, brought to you by the experts at keyfobx.com, will walk you through the process to get your Supra Key Fob working again.
Before you begin, it’s crucial to verify that your vehicle is a Japanese Domestic Market (JDM) model. You can confirm this by checking your chassis number; JDM models will start with “JT”. This programming procedure is specifically designed for these JDM vehicles and also applies to certain 90s JDM Corollas that used the same remote system as these Supras.
Here’s how to program your supra key fob:
Step-by-Step Programming Instructions
- Get in the driver’s seat: Ensure the driver’s side door is open and the key is NOT in the ignition.
- Insert and remove the key: Place the key into the ignition cylinder, then immediately remove it. Do not turn the key.
- Press the door lock/unlock button (5 times): Locate the door lock and unlock button on your door panel switch. Press the “lock-unlock” button sequence five times. Make sure to complete these five cycles within 40 seconds. Each cycle is a press of “lock” then “unlock”.
- Close and open the driver’s door: Close the driver’s side door, and then open it again.
- Press the lock/unlock button again (5 times): Repeat step 3, pressing the door lock-unlock button sequence five times again.
- Insert the key into the ignition: Place the key back into the ignition cylinder.
- Turn the ignition to ‘on’ once: Turn the ignition key from the ‘lock’ position to the ‘on’ position just one time. Do not turn it more than once, as this could erase existing key codes.
- Remove the key from the ignition: Take the key out of the ignition.
- Central locking cycle: At this point, the central locking system should activate automatically, locking and unlocking the doors on its own. This indicates the system has entered programming mode.
- Press and hold the remote ‘lock’ switch: Within 20 seconds of the central locking cycle, take your supra key fob remote and press and hold the ‘lock’ button for more than one second.
- Confirmation cycle: If the receiver successfully receives the signal from your supra key fob, the door locks should cycle again, locking and unlocking on their own.
- Close and open the driver’s door (again): Close the driver’s door, then open it once more.
- Press and hold the ‘lock’ button on remote (again): Repeat step 10, press and hold the ‘lock’ button on your supra key fob remote for more than one second.
- Final confirmation cycle: The door locks should cycle one last time, locking then unlocking automatically. This confirms the programming of your supra key fob is complete.
- Program additional remotes (if needed): If you have another remote to program, immediately repeat steps 10 through 14 with the next transmitter.
Troubleshooting Tips
- Dome Light Check: Ensure your interior dome light is functioning correctly and is set to activate when the doors are opened (set to ‘door’ and not ‘off’). This system is often linked to the keyless entry receiver.
- Lock-Unlock Cycle Clarity: When performing the door lock-unlock cycles (steps 3 and 5), remember it’s a sequence of “lock-unlock, lock-unlock, lock-unlock, lock-unlock, lock-unlock.” Make sure each is a distinct press.
- Model Year Compatibility: This procedure is confirmed to work on a 1997 “bug eye” Corolla, and is presumed to be compatible with similar 1998 models that use a separate Denso key fob unit (not integrated into the key itself).
By following these steps carefully, you should be able to program your supra key fob and regain remote access to your vehicle. If you continue to experience issues, or need replacement key fobs, remember to visit keyfobx.com for a wide selection of key fobs and further expert assistance.
