Lost your key fob or need to program a new one for your 3rd generation Toyota 4Runner? You’re in the right place. Programming your key fob for a 3rd gen 4Runner (model years 1996-2002) can be done at home without a trip to the dealership, saving you both time and money. This guide provides a comprehensive, step-by-step process to program your 3rd Gen 4runner Key Fob, ensuring you regain convenient keyless entry quickly and efficiently.
Step-by-Step Guide to Program Your 3rd Gen 4Runner Key Fob
Follow these instructions carefully to successfully program your 3rd gen 4Runner key fob. It’s crucial to perform each step accurately and within the specified timeframes.
Step 1: Vehicle Preparation
- Ensure your 3rd gen 4Runner is turned OFF and the key is OUT of the ignition.
- OPEN the driver’s side door and leave it UNLOCKED. This is essential for initiating the programming sequence.
Step 2: Entering Programming Mode – Part 1
- INSERT the key into the ignition cylinder. Do NOT turn the key.
- Immediately REMOVE the key from the ignition. This action is the first step to signal the vehicle to enter programming mode.
Step 3: Entering Programming Mode – Part 2 (Timing Critical – Within 40 Seconds)
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(a) Lock/Unlock Cycle: Using the power lock switch located on the driver’s side door panel, perform 5 lock/unlock cycles, always starting with the LOCK action. Maintain a consistent pace, aiming for approximately one cycle per second (one cycle equals one lock and one unlock). Smooth, even movements are key to ensure proper signal recognition by the vehicle’s computer.
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(b) Door Closure: After the 5 lock/unlock cycles, CLOSE the driver’s side door, and then immediately OPEN it again. This door action is another signal in the programming sequence.
Step 4: Entering Programming Mode – Part 3 (Timing Critical – Within 40 Seconds)
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(a) Lock/Unlock Cycle (Repeat): Again, using the power lock switch on the driver’s door panel, perform another set of 5 lock/unlock cycles, starting with LOCK, at the same consistent pace as before (approximately one cycle per second).
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(b) Ignition Insertion: INSERT the key back into the ignition cylinder.
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(c) Ignition Cycling (Crucial Step for Remote Memory): This step determines how the vehicle handles existing programmed remotes.
- ONCE (Retain Existing Remotes): Turn the ignition key to the ON position (without starting the engine) and then immediately back to the OFF position ONCE. This option will keep any previously programmed remotes and add the new one you are about to program.
- TWICE (Erase All and Add New): Turn the ignition key to the ON then OFF position TWICE. This will erase all previously programmed remotes, so you will need to reprogram all key fobs you intend to use, including the new one. This is useful if you suspect a lost or stolen key fob.
- THREE Times (Check Remote Count): Turn the ignition key to the ON then OFF position THREE times. This will signal the system to indicate how many remotes are currently programmed to the vehicle (usually through door lock cycling).
- FIVE Times (Erase All Remotes): Turn the ignition key to the ON then OFF position FIVE times. This option also erases all programmed remotes, similar to cycling twice.
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(d) Key Removal: REMOVE the key from the ignition cylinder.
Step 5: Programming Mode Confirmation (Within 3 Seconds)
- If you have successfully entered programming mode, the power door locks should automatically cycle LOCK then UNLOCK within 3 seconds. This lock/unlock cycle is your confirmation that the vehicle is now ready to learn the new key fob signal. If you do not see this lock cycle, you will need to repeat steps 1-4 carefully, paying close attention to timing and accuracy.
Step 6: Program the Remote (Within 40 Seconds)
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(a) Button Press (Simultaneous): On the key fob you are programming, PRESS and HOLD both the LOCK and UNLOCK buttons simultaneously for approximately 1 second.
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(b) Button Press (Lock Button): Immediately after releasing both buttons, PRESS and HOLD the LOCK button alone for about 2 seconds. If the programming is successful for this remote, the door locks will cycle LOCK then UNLOCK again to confirm.
Step 7: Program Additional Remotes (Repeat for Each Remote)
- If you have additional 3rd gen 4Runner key fobs to program, immediately REPEAT Steps 6a and 6b for each additional remote. You must do this within the same programming session.
Step 8: Exit Programming Mode
- To exit the key fob programming mode, simply CLOSE the driver’s side door. The system will automatically time out of programming mode after a period of inactivity as well.
Step 9: Test the Remotes
- Thoroughly TEST all programmed key fobs to ensure they are working correctly. Check the lock, unlock, and panic (if applicable) functions on each remote. Programming is now complete!
Troubleshooting Tips for 3rd Gen 4Runner Key Fob Programming
- Timing is Crucial: The most common issue is timing. Ensure you are performing the lock/unlock cycles and ignition steps within the 40-second windows and the confirmation within 3 seconds. Use a stopwatch or timer if needed to practice your timing.
- Consistent Pace: Maintain a steady and even pace for the lock/unlock cycles. Avoid rushing or pausing excessively.
- Door Switch Functionality: Ensure your driver’s side door power lock switch is functioning correctly. If the switch is faulty, it will be impossible to enter programming mode.
- New Batteries: Make sure your new key fobs have fresh batteries installed. Low battery power can sometimes interfere with the programming process.
- Correct Key Fob: Verify that you are using a compatible key fob for your 3rd gen 4Runner. Aftermarket or incorrect frequency key fobs will not program.
- Start Over: If you encounter issues, don’t hesitate to start the entire process over from Step 1. Sometimes, a fresh attempt resolves glitches.
By following these detailed steps and troubleshooting tips, you should be able to successfully program your 3rd gen 4Runner key fob and enjoy the convenience of keyless entry. This DIY approach saves you money and provides a valuable skill for maintaining your vehicle.
