2007 Toyota Sienna Owners Manual - Page 396

07 SIENNA_U (L/O 0612) D Driving on rough, gravel or snow− covered roads. "ABS" warning light Vehicles without the vehicle stability control system- The light comes on when the ignition key is turned to the "ON" position. If the anti− lock brake system works properly, the light turns off after a few seconds. Thereafter, if either of the systems malfunctions, the light comes on again. When the "ABS" warning light is on (and the brake system warning light is off), the anti−lock brake system does not operate, but the brake system still operates conventionally. When the "ABS" warning light is on (and the brake system warning light is off), the anti−lock brake system does not operate but the brake assist system still operates. In this case the wheels could lock up during a sudden braking or braking on slippery road surfaces. D Driving with tire chains installed. D Driving over the steps such as the joints on the road. D Driving on roads where the road surface is pitted or has other differences in surface height. Install all 4 tires of specified size at appropriate pressure: The anti−lock brake system detects vehicle speeds using the speed sensors for respective wheels' turning speeds. The use of tires other than specified may fail to detect the accurate turning speed resulting in a longer stopping distance. Type A Type B 396 2007 SIENNA from Oct. '06 Prod. (OM45437U)