Because one or more of the tires is low. If you just had replaced one o more tires, there is need to reset the warning light.
Tire Pressure
The 2001 Toyota Sienna has a V6 engine.
The 2001 Toyota Sienna has 24 valves.
The 2001 Toyota Sienna has a 4-speed automatic.
The 2001 Toyota Sienna is a gas-powered vehicle.
The 2001 Toyota Sienna's turning circle is 40 ft..
The 2001 Toyota Sienna has a drag coefficient of .32 Cd.
The curb weight of the 2001 Toyota Sienna is 3919 lbs..
The 2001 Toyota Sienna is 16 ft. 2.2 in. (194.2 in.) long.
The height of the 2001 Toyota Sienna is 5 ft. 7.3 in. (67.3 in.).
The 2001 Toyota Sienna runs on regular unleaded.
The 2001 Toyota Sienna has double overhead cam (DOHC).