2003 Toyota 4Runner Owners Manual - Page 595

'03 4Runner_U (L/O 0211) D Driving with tire chains installed. D Driving over the steps such as the joints on the road. "ABS" warning light The light comes on when the ignition key is turned to the "ON" position. If the anti- lock brake system and the brake assist system work 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 following systems do not operate, but the brake system still operates conventionally. Type A 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. D Anti-lock brake system D Traction control system (two-wheel drive models) D Active traction control system (four-wheel drive models) D Vehicle skid control system D Downhill assist control system (four-wheel drive models) D Hill-start assist control system When the "ABS" warning light is on (and the brake system warning light is off), the anti-lock brake system does not operate so that the wheels will lock up during a sudden braking or braking on slippery road surfaces. Type B 2003 4RUNNER from Oct. '02 Prod. (OM35804U) 249