To reset the maintenance light on most Toyota vehicles, follow these steps: 1) Turn off the vehicle. 2) Press and hold the trip reset button (often located near the odometer). 3) While holding the trip reset button, turn the ignition to the 'on' position (without starting the car). 4) Continue holding until the maintenance light turns off, usually after a few seconds. 5) Release the button and turn off the ignition. 6) Remember, the exact process might vary based on the Toyota model and year, so it's always a good idea to consult the owner's manual.