Lost or need a spare key fob for your 2002 Lexus RX300? Replacing your key fob doesn’t have to mean an expensive trip to the dealership. You can program a new key fob yourself with a few simple steps. This guide provides a clear, easy-to-follow procedure to program both the immobilizer and remote functions of your 2002 Lexus Rx300 Key Fob, saving you time and money.
Programming the Immobilizer for Your 2002 Lexus RX300 Key
The immobilizer is a security system that prevents your Lexus RX300 from starting without the correct programmed key. Here’s how to program a new key to work with your vehicle’s immobilizer system:
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Start with the Master Key: Insert your original master key into the ignition.
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Pedal Press Sequence: Within 5 seconds, firmly press the gas pedal five times.
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Brake Pedal Sequence: Immediately after, press the brake pedal six times.
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Remove Master Key: Take the master key out of the ignition.
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Insert the New Key: Quickly insert the new, unprogrammed key into the ignition. The security light on your dashboard will likely be blinking.
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Gas Pedal Activation: Press the gas pedal one time.
This action initiates the programming sequence. The security light will now blink for approximately 60 seconds.
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Wait for Security Light: Be patient and wait for the security light to stop blinking. This indicates the immobilizer programming is complete.
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Test the New Key: Once the blinking stops, remove the new key and insert it back into the ignition. Attempt to start your Lexus RX300. If the programming was successful, the engine should start.
Successful engine start confirms immobilizer programming.
Programming the Remote Function for Your 2002 Lexus RX300 Key Fob
After successfully programming the immobilizer, you’ll need to program the remote control functions (lock/unlock) of your new key fob. Follow these steps:
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Open Driver’s Door: Ensure the driver’s side door is open throughout this process.
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Simultaneous Button Press (Initial): Press and hold the Lock and Unlock buttons on your new remote simultaneously for one second. Release the buttons. Note: You might not see any immediate reaction from your vehicle at this stage.
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Open and Close Driver’s Door: Open the driver’s door (if it isn’t already) and then close it.
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Insert and Remove Key (Cycle 1): Insert the new key into the ignition and remove it quickly.
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Lock/Unlock Cycle (5 Times – Cycle 1): Using the power lock switch on the driver’s door panel, cycle the Lock and Unlock buttons five times. Do this relatively quickly.
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Open and Close Driver’s Door Again: Open the driver’s door again, and then close it.
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Lock/Unlock Cycle (5 Times – Cycle 2): Repeat step 5: cycle the Lock and Unlock buttons on the door panel five times again.
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Ignition Cycle: Insert the new key into the ignition and turn it to the ON position, then immediately turn it OFF and remove the key. Do this just one time.
You should observe the door locks cycle (lock and unlock) automatically at this point. This indicates that your 2002 Lexus RX300 has entered remote programming mode and accepted the new remote.
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Simultaneous Button Press (Final): Go back to your new remote and press and hold the Lock and Unlock buttons simultaneously for one second. Release them.
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Lock Button Test: Press the Lock button on the remote. You should see and hear the car doors lock.
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Unlock Button Test: Press the Unlock button. The driver’s door (and potentially all doors) should unlock, confirming successful remote programming.
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Exit Programming Mode: Close the driver’s door. This action should exit the programming mode.
Final Verification:
To ensure both the immobilizer and remote functions are correctly programmed, test both your original master key and the newly programmed key fob. Try locking and unlocking the car with both remotes to confirm everything is working as expected.
Key Fob Information for 2002 Lexus RX300:
- FCC ID: N14TMTX-1
- Chip: 4C chip
- Canada: 2842 102 832
- Model: TMTX-1
By following these steps, you should be able to successfully program a new key fob for your 2002 Lexus RX300 without needing specialized tools or dealership assistance. Enjoy the convenience of your newly programmed key!
