2005 Lexus SC 430 Owners Manual - Page 187

AIR CONDITIONING 4 Floor/Windshield - Air flows mainly from the floor vents, the windshield vents and the lap-jet vents (if the retractable hardtop is opened). If manual switching of air intake is desired - It is recommended that you close the lower vent. For details about this, see page 167. If quick heating or cooling is desired - Push the "TEMP" or "PASSENGER TEMP" button on either side and hold it until the maximum figure or minimum figure appears on the display. If manual fan speed control is desired - Each time you push the air intake control button, the mode changes in order from the RECIRCULATED AIR mode to AUTOMATIC mode to OUTSIDE AIR mode, then back to the RECIRCULATED AIR mode. Each indicator light shows which mode is now selected. 1 2 " 1 Fan speed at low 2 Fan speed at high RECIRCULATED mode - If quick circulation of cooled air is desired, select this mode. EXHAUST GAS AUTOMATIC mode - If the outside air contains harmful substances like exhaust gas (i.e., when the vehicle running just in front of your vehicle accelerates rapidly), the system changes automatically from the OUTSIDE AIR mode (with indicators 2 and 3 on) to the RECIRCULATED mode (with indicators 1 and 2 on). OUTSIDE AIR mode - The system will take fresh outside air into the vehicle. 21sa02 21sa03a The fan speed can be set to your desired speed by pushing the appropriate side of fan speed control button. The higher the fan speed is, the more air is delivered. Pushing the "OFF" button turns off the fan. To remove exterior windshield frost, use the high speed setting. 3 161