2012 Lexus HS 250h Owners Manual - Page 976

AIR CONDITIONING D Switching between outside air and recirculated air modes (d) Defogging the windshield U7003AASLY Each time you push the air intake control button, the mode changes in order from the RECIRCULATED AIR mode to OUTSIDE AIR mode, then back to the RECIRCULATED AIR mode. Each indicator light shows which mode is now selected. 1 RECIRCULATED AIR mode - If quick circulation of cooled air is desired, select this mode. 2 OUTSIDE AIR mode - The system will take fresh outside air into the vehicle. For normal use, it is the 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. The air conditioning system operates automatically. Recirculated air mode will automatically switch to outside air mode. It is not possible to return to recirculated air mode when the switch is on. CAUTION To prevent the windshield from fogging up Do not use the windshield air flow button during cool air operation in extremely humid weather. The difference between the temperature of the outside air and that of the windshield can cause the outer surface of the windshield to fog up, blocking your vision. 282