2001 Toyota Sienna dash light tire pressure

AS the owner about all you can do at home is, make sure the brake lights work, the
ABS light works, and goes out. Fill the tires to the recommended pressure, all tire
must be the same size and good tread. Then to initialize the system, press and hold
the tire pressure warning standardization switch and hold it until the warning light
flashes three time, then the vehicle needs to be driven until 18 mph is achieved.

This needs to be done if you change tires, or one wheel!