Resetting the security system for Your 2002 Toyota Avalon will be very easy as long as You have access to Your key. You'll need to put it in to the ignition and switch it in the on position but don't start the engine. Now You will need to wait ten minutes and then kill power to the vehicle. Once You have done this You should be able to start Your vehicle as normal without having any issues with the security system. If this doesn't work or Your vehicle isn't recognizing Your key You can just remove the battery from the vehicle for 15 to 30 minutes until it returns to it's factory settings.
To reset the security system on a 2002 toyota avalon, simply turn the key to the accessory position, wait ten minutes, then turn the vehicle off.
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