2006 Lexus IS 350 Navigation Manual - Page 233

IS350/250_Navi_U (L/O 0508) AIR CONDITIONING 233 To change the sensitivity of the sensor switching between the RECIRCULATED AIR and OUTSIDE AIR in the AUTOMATIC mode, push the air intake control button and hold it for a few seconds. The "Smog Sensor" screen will be displayed. The sensitivity of the sensor can be adjusted only while the vehicle has been stopped. If manual on−off of the air conditioning is desired - The sensitivity of the touch−screen button is set to be higher toward "HI" and lower toward "LO". Touch the desired button on the screen. When you push the "AUTO" button, the above screen goes off. Touch "A/C" to turn the air conditioning on and touch it again to turn the air conditioning off. If you turn off the air conditioning manually, the EXHAUST GAS AUTOMATIC mode will be cancelled. If the outside temperature is below 0_C (32_F), the air conditioning will turn off automatically. At this time, the indicator on "A/C" is off and the EXHAUST GAS AUTOMATIC indicator light remains on. However, the EXHAUST GAS AUTOMATIC mode does not operate. When the air conditioning turns on as with the raised temperature, the EXHAUST GAS AUTOMATIC mode resumes. If the system is used for ventilation, heating in dry weather or removing frost or exterior fog on the windshield, turn the air conditioning off once it is no longer required. This will improve fuel economy. The air conditioning can be used for year− round automatic temperature control including cooling and dehumidifying operation. If the air conditioning compressor does not operate, the indicator of "A/C" will blink. If the indicator of "A/C" blinks even when "A/C" is touched again, have the compressor checked by your Lexus dealer.