2004 Lexus IS 300 Owners Manual - Page 218

03 07.09 AIR CONDITIONING (d) Operating tips D 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. SV21015 D Make sure the air inlet grilles in front of the windshield are not blocked by leaves or other obstructions. D If air flow control is not satisfactory, check the dashboard vents. (See "Center vents" and "Side vents".) D On humid days, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield. D Keep the area under the front seats clear to allow air to circulate throughout the vehicle. D On cold days, set the fan speed selector to adjust the fan speed high for a minute to help clear the intake ducts of snow or moisture. This can reduce the amount of fogging on the windows. D 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 dial be turned to anywhere except the "OFF" button. D 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. 199 2. Remove the cover and take out the air filter If it is dirty, it should be replaced. INFORMATION The air filter should be installed properly in position. The use of air conditioning with the air filter removed may cause deteriorated dustproof performance and then affect air conditioning performance.