2003 Toyota Sienna Owners Manual - Page 152

03 SIENNA_U (L/O 0207) Traction control system CAUTION Always keep your foot on the brake pedal while stopped with the engine running. This prevents the vehicle from creeping. The traction control system automatically helps prevent the spinning of front wheels when the vehicle is started or accelerated on slippery road surfaces. When the ignition key is turned to "ON", the system automatically turns on. CAUTION NOTICE Do not hold the vehicle on an upgrade with the accelerator pedal. It can cause the transmission to overheat. Always use the brake pedal or parking brake. Under certain slippery road conditions, full traction of the vehicle and power against front wheels cannot be maintained, even though the traction control system is in operation. Do not drive the vehicle under any speed or maneuvering conditions which may cause the vehicle to lose traction control. In situations where the road surface is covered with ice or snow, your vehicle should be fitted with snow tires or tire chains. Always drive at an appropriate and cautious speed for the present road conditions. NORMAL DRIVING MODE Leave the system on during the ordinary driving so that it can operate when needed. You may hear a sound in the engine compartment for a few seconds when the engine is started or just after the vehicle is started. This means that the traction control system is in the self −check mode, but does not indicate a malfunction. 152 2003 MY SIENNA (OM45410U)