2004 Lexus SC 430 Owners Manual - Page 182

AIR CONDITIONING Turning off the air conditioning manually will cancel the EXHAUST GAS AUTOMATIC mode. If you select the "AUTO" mode during fan operating, the air conditioning turns on and the EXHAUST GAS AUTOMATIC mode will operate. 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. To change the sensitivity of the sensor switching between the RECIRCULATED and OUTSIDE AIR in the AUTOMATIC mode, push the air intake control button until the "AUTO" indicator light flashes. The display changes as illustrated below. The sensitivity of the sensor can be adjusted only while the vehicle has stopped. 21sa08a Each time you push the "TEMP" button, the sensitivity changes from "+3" down to "-3". If you do not operate any button for a few seconds or if you push a button other than the air intake control button and driver side temperature control button, the previous display returns. 162