1. Turn the ignition key to the "On" position, but do not start the engine.
2. Within five seconds, press and hold the "Unlock" button on the driver's door for at least two seconds.
3. While still holding the "Unlock" button, press the "Lock" button four times.
4. Release both the "Unlock" and "Lock" buttons.
5. The anti-theft system will now be disabled.
Please note that this procedure may vary depending on the specific model and year of your Toyota Avalon. If you are unable to disable the anti-theft system using the steps above, please consult your vehicle's owner's manual for further instructions.
