2003 Lexus IS 300 Owners Manual - Page 204

AIR CONDITIONING CAUTION Do not use the "FRONT WINDSHIELD" button during cooled air operation in extremely humid weather. The difference between the temperature of the outside air and that of the windshield could cause the outer surface of the windshield to fog up blocking your vision. (c) Air filter The air filter may clog after long use which will reduce the air flow. However, you can inspect the filter easily. The air conditioning filter may clog after long use. The filter may need to be replaced if the air flow of the air conditioner and heater experiences extreme reductions in operating efficiency, or if the windows become to fog up easily. When you inspect and replace the air filter, be sure to turn off the fan. SS21013 1. Remove the glove box. Remove belongings stored in the glove box, and remove the two pins installed on the lower part of the glove box, and remove the glove box. 187 2003 IS300 from Aug. '02 Prod. (OM53439U)