2009 Lexus IS 350 Owners Manual - Page 216

3-1. Using the air conditioning system and defogger n Automatic mode for air intake control (IS350 only) In automatic mode, the system detects exhaust gas and other pollutants and automatically switches between outside air and recirculated air modes. n Micro dust and pollen filter l In order to prevent the window from fogging up when the outside air is cold, the following may occur. • Outside air mode does not switch to . • The air conditioning system operates automatically. • The operation cancels after 1 minute. l In rainy weather, the windows may fog up. Press . CAUTION n To prevent the windshield from fogging up 3 Interior features Do not use 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. NOTICE n To prevent battery discharge Do not leave the automatic air conditioning system on longer than necessary when the engine is off. 217