To reset the 2009 Toyota Yaris maintenance light, please follow these instructions:
1. Turn the ignition to run (one position before starting engine). 2. Ensure odometer reading is shown. Turn ignition off. 3. While holding down the trip meter reset knob turn the ignition to run (one position before starting engine). 4. Hold down knob for at least 5 seconds. The odometer indicates “000000” and the light goes off. If the system fails to reset, the light will continue flashing. 5. Turn the ignition off and then start the engine to verify the indicator has been reset.