1997 Lexus LX 450 Owners Manual - Page 125

AIR CONDITIONING AND AUDIO (b) Windshield defogging and defrosting ! 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) Operating tips To remove interior fog on the windshield - Push the "FRONT WINDSHIELD" button. To remove frost or exterior fog on the windshield - 1. Place the temperature control lever at the maximum temperature. 2. Push the "FRONT WINDSHIELD" button. 3. Push the "HI" button of the fan speed control button to obtain a maximum air flow. When the "FRONT WINDSHIELD" button is pushed while operating in automatic mode, the air conditioning is set to operate and the OUTSIDE AIR mode is set. If you push the "FRONT WINDSHIELD" button once again while in the FRONT WINDSHIELD mode, the mode then returns to the last mode used. $ Make sure the air inlet grilles in front of the windshield are not blocked by leaves or other obstructions. $ If air flow control is not satisfactory, check the dashboard vents. (See "Side vents" and "Lower vent".) $ To help cool down the interior after parking in the hot sun, drive for the first few minutes with the windows open. After the excess heat has blown away, close the windows. $ When driving on dusty roads, close all windows. If dust thrown up by the vehicle is still drawn into the vehicle after closing the windows, it is recommended that the air intake control button be left to the OUTSIDE AIR mode and the fan speed control button be pressed to anywhere except the "OFF" button. $ If following another vehicle on a dusty road, or driving in windy and dusty conditions, it is recommended that the air intake control button be temporarily pressed in to the RECIRCULATED AIR mode, which will close off the outside passage and prevent outside air and dust from entering the vehicle interior. 110