Lost or broken your 2002 Lexus Is300 Key Fob? Getting a replacement and having it programmed doesn’t have to break the bank. Many dealerships and locksmiths charge hefty fees for this service. But, if you have a master key already, you can actually program a new key fob yourself, right in your driveway. This guide provides step-by-step instructions, originally shared by an IS300 enthusiast, to help you program both the key and the remote functions of your 2002 Lexus IS300 key fob, potentially saving you a significant amount of money.
Key Programming for Your Lexus IS300
This section will guide you through programming the transponder chip within your new 2002 Lexus IS300 key. This chip is essential for starting your car. Make sure you have a new, uncut master key blank and at least one already programmed master key to begin.
Follow these steps carefully:
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Insert Master Key: Place your existing, programmed master key into the ignition. Do not turn the ignition on.
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Gas Pedal Press (5 Times): Press and fully release the gas pedal five times in quick succession.
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Brake Pedal Press (6 Times): Press and fully release the brake pedal six times in quick succession.
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Remove Master Key: Take the programmed master key out of the ignition.
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Insert New Key: Immediately insert the new, unprogrammed key you wish to program into the ignition.
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Gas Pedal Press (1 Time): Press and fully release the gas pedal just one time.
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Wait and Watch Security Light: Now, wait for approximately one minute. During this time, you should observe the security light on your dashboard blinking. Once the security light stops blinking, your new key is successfully programmed for starting your 2002 Lexus IS300.
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Final Brake Press: To finalize the programming process, press and release the brake pedal one last time.
Understanding the Security Light:
The security light on your Lexus IS300 dashboard is your guide throughout this process.
- Step 1: When you insert the master key, the security light should initially turn off.
- Steps 2-5: The security light will remain off during these steps.
- Step 6: After pressing the gas pedal in step 6, the security light should begin to blink. This blinking indicates the system is in programming mode.
- Completion: The blinking will stop once the key is programmed.
- Error Indicator: If the security light illuminates after step 4 (before inserting the new key), stop the procedure and begin again from step 1.
Troubleshooting Key Programming:
- Speed is Key: If your car does not enter programming mode, it’s often because the pedal presses were not performed quickly enough. Try the procedure again, focusing on speed.
- Master Key vs. Valet Key: Ensure you are using a master key, not a valet key. Valet keys typically cannot be used for programming new keys. Master keys usually have a Lexus logo and can open the glove box and trunk, while valet keys may lack these features.
- Restart if Necessary: If you encounter issues, don’t hesitate to restart the entire procedure from the beginning.
Remote Programming for Your 2002 Lexus IS300 Key Fob
Once you have programmed the key to start your car, you’ll want to program the remote functions (locking/unlocking doors) of your new 2002 Lexus IS300 key fob. Follow these instructions for remote programming:
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Prepare Doors: Ensure all doors are closed and locked. Then, unlock and open only the driver’s side door.
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Insert and Remove Key: Insert your new key into the ignition and immediately remove it. Do not turn the ignition on.
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Lock/Unlock Cycle (5 Times): Using the electric lock switch on the driver’s door panel, cycle the door locks five times. Perform the sequence: Lock, Unlock, Lock, Unlock, Lock, Unlock, Lock, Unlock, Lock, Unlock.
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Close and Open Driver’s Door: Close the driver’s door and then open it again.
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Lock/Unlock Cycle (5 Times Again): Repeat the lock/unlock cycle using the electric lock switch five more times: Lock, Unlock, Lock, Unlock, Lock, Unlock, Lock, Unlock, Lock, Unlock.
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Ignition Sequence: Insert the key into the ignition. Turn the ignition to the “ON” position, then immediately turn it back to “OFF” and remove the key.
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Observe Door Locks: At this point, you should see the door locks cycle automatically (lock then unlock). This indicates that your car has successfully entered remote programming mode.
- Troubleshooting: If the door locks do not cycle automatically, the car has not entered programming mode. You will need to restart the remote programming procedure from step 1.
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Simultaneous Button Press (Remote): On your new remote, press and hold both the “Lock” and “Unlock” buttons simultaneously for no more than two seconds.
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Lock Button Press (Remote): Immediately after step 8, press and release only the “Lock” button on the remote for no more than one second.
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Confirmation – Door Lock Cycle: Watch the door locks. They should cycle (lock then unlock) one time to confirm successful programming of the remote.
- Failure Indication: If the door locks cycle twice, it indicates that the programming attempt has failed.
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Repeat if Necessary: If programming fails (locks cycle twice), repeat steps 8 and 9. Sometimes, repositioning yourself outside the car or shortening the button press duration can improve signal reception.
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Exit Programming: Once the remote is successfully programmed (single door lock cycle confirmation), close and open the driver’s door to exit the programming procedure.
Congratulations! You have now programmed your 2002 Lexus IS300 key fob for both starting the vehicle and remote functions. By following these DIY steps, you’ve saved yourself the expense of professional programming services. Enjoy the convenience of your new key fob!
