how to reset the tire pressure light
If the low tire pressure warning light comes on or blinks while driving, do the following. If the warning light comes on: Adjust the tire inflation pressure to the specified level as soon as possible. Push the tire pressure warning system reset switch for a few seconds and make sure the warning light goes off. If the light remains on after the reset switch has been pushed, have the tire pressure warning system checked at your Toyota dealer. If you have a flat tire, replace it with the spare tire.