1999 Lexus SC 400 Owners Manual - Page 200

AIR CONDITIONING AND AUDIO AIR mode is set. If you push the "FRONT WINDSHIELD" button once again while in the FRONT WINDSHIELD mode, the mode then returns to the last mode used. CAUTION Do not use the FRONT WINDSHIELD mode during cooled air operation in extremely humid weather. The difference between the temperature of the outside air and that of the windshield could cause the outer surface of the windshield to fog up blocking your vision. If quick heating or cooling is desired - Obtain maximum power by turning the "TEMP" knob fully. At this time, "MAX. HOT" or "MAX. COLD" will appear on the display. If manual fan speed control is desired - The fan speed can be set to your desired speed by pushing (FAN) button. The either side of the fan speed control higher the fan speed is, the more air is delivered. Pushing in (OFF) button turns off the fan. the To remove exterior windshield frost, use the high speed setting. Stopping the fan - Push in the (OFF) button. The fan stops in automatic mode or manual mode. If manual switching of air intake is desired - (AIR INTAKE) button is used to switch the air intake between the OUTSIDE AIR mode and RECIRCULATED AIR mode. With the button in the OUTSIDE AIR mode, the OUTSIDE AIR mode indicator light will come on and the system will take fresh outside air into the vehicle. If quick circulation of cooled air is desired, press in the air intake control button for RECIRCULATED AIR. The RECIRCULATED AIR mode indicator light will come on. For normal use, it is best to keep the air intake control button 182