2007 Toyota Sienna Owners Manual - Page 214

07 SIENNA_U (L/O 0612) Tire pressure warning system In the following cases, contact your Toyota dealer: The tire pressure warning system warns you that the tire inflation pressure is low. The tire pressure warning system is not a substitute for checking normal tire inflation pressure. Check the tire inflation pressure with a tire pressure gauge regularly. D The warning light does not come on after the ignition key is turned to "ON". D The warning light remains on after the ignition key is turned to "ON". D The warning light comes on while driving. Two−wheel drive models only-The "TRAC OFF" indicator light will come on when the "VSC" warning light comes on even if the "TRAC OFF" switch is not pushed. "VSC" warning light This light warns that there is a problem somewhere in the vehicle stability control system or the traction control system. The light will come on when the ignition key is turned to "ON" and will go off after a few seconds. If the light comes on while driving, the system does not work. However, as conventional braking operates when applied, there is no problem to continue your driving. CAUTION The warning system may not activate immediately if a blowout or sudden air leakage should occur. 214 2007 SIENNA from Oct. '06 Prod. (OM45437U)