2004 Lexus RX 330 Owners Manual - Page 526

STARTING AND DRIVING TRACTION CONTROL SYSTEM (four-wheel drive modes) The traction control system automatically helps prevent the spinning of 4 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. Normal driving mode CAUTION Under certain slippery road conditions, full traction of the vehicle and power against 4 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. " Slip indicator light 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 just after the vehicle begins to move. This means that the traction control system is in the self-check mode, but does not indicate a malfunction. 503