1999 Lexus RX 300 User Guide 1 - Page 196

STARTING AND DRIVING TRACTION CONTROL SYSTEM (Two-wheel drive models only) The traction control system automatically helps control the spinning of the front wheels which may occur when accelerating on slippery road surfaces, thus assisting driver to control the driving power of the front wheels. 31R016b 31R015a You can turn off the traction control system by pushing the "TRAC OFF" switch. The "TRAC OFF" indicator/warning light will then come on. Pushing the "TRAC OFF" switch a second time turns the system back on and extinguishes the "TRAC OFF" indicator/warning light. You may hear a slight clicking noise in the engine compartment 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, and does not indicate malfunction. When the traction control system is operating, you may feel vibration or noise of your vehicle, caused by operation of the brakes. This indicates the system is functioning properly. When getting the vehicle out of mud or new snow, etc. the traction control system will help operate to prevent the wheels from spinning. When you turn the ignition switch on, this system always turns on. Leave the system on during ordinary driving so that it can operate when needed. When traction control is applied, the slip indicator light blinks. 181