2009 Lexus GS 350 Owners Manual - Page 302

3-2. Using the air conditioning system and defogger n Automatic mode for air intake control In automatic mode, the system detects exhaust gas and other pollutants and automatically switches between outside air and recirculated air modes. When the air conditioning is off, and the fan is operating, turning the auto mode on will activate the air conditioning system. n Micro dust and pollen filter l In order to prevent the windows 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 . n When the indicator light on flashes Touch and turn off the air conditioning system before turning it on once more. There may be a problem in the air conditioning system if the indicator light continues to flash. Turn the air conditioning system off and have it inspected by your Lexus dealer. CAUTION n To prevent the windshield from fogging up 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 12 volt battery discharge Do not leave the automatic air conditioning system on longer than necessary when the engine is off. 242 GS_G_U (OM30B43U) March 8, 2010 10:20 am