2001 Toyota Sienna reset tire pressure light

The system require initializing after changing tires and or rotating wheels
When tire pressure warning light blink twice every second system need to be initialize
and to do so
1. Set the tire pressure of all wheels to specified pressure on door jam tag
2. With the vehicle stopped and parking brake applied turn the ignition switch to on position
3. Press and hold the tire reset switch until warning light blink 3 times at one second intervals
4. Continue pressing the switch for about 3-4 seconds
5. Then release
6. Start and drive the van it may take up to 8 hr of driving to complete the initializing procedure