2004 Lexus IS 300 Owners Manual - Page 274

03 07.09 STARTING AND DRIVING The "TRAC OFF" indicator/warning light will come on when the "VSC" warning light comes on even if the "TRAC OFF" switch is not pushed. TRACTION CONTROL SYSTEM (Without vehicle stability control system) The traction control system automatically helps prevent the spinning of rear 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 Under certain slippery road conditions, full traction of the vehicle and power against rear 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. 255