2004 Lexus IS 300 Owners Manual - Page 214

03 07.09 AIR CONDITIONING If manual fan speed control is desired If manual switching of air intake is desired - SV21023 SV21024a " 1 Fan speed at low 2 Fan speed at high The fan speed can be set to your desired speed by turning the fan speed control dial. The higher the fan speed is, the more air is delivered. Turning the dial to "OFF" turns off the fan. To remove exterior windshield frost, use the high speed setting. The air intake control 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, push 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 set to OUTSIDE AIR mode. If recirculated air is used during heating, the windows will fog up more easily. When you adjust the airflow control dial and the fan speed control dial to "AUTO" positions in case that the room temperature is much higher than the set temperature, the air intake mode will be automatically changed to RECIRCULATED AIR. 195