2009 Lexus ES 350 Navigation Manual - Page 247

AIR CONDITIONING If manual on−off of the air conditioning is desired - (b) Windshield defogging and defrosting To remove interior fog on the windshield - 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 5_C (41_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. If the engine coolant temperature becomes extremely high, the air conditioning may shut off automatically to resolve emergency situation for engine cooling. This is not a malfunction. When the engine coolant temperature is lowered, the air conditioning comes on automatically. Push the windshield air flow button. 267