Lexus GS430 User Manual page 295

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.
Heating
For best results, set controls to:
For automatic operation—
Push in the "AUTO" button.
Temperature—To the desired temperature
Air intake—OUTSIDE AIR
Air conditioning—OFF
For manual operation—
Fan speed—To the desired fan speed
Temperature—Towards high temperature
Air intake—OUTSIDE AIR
Air flow—FLOOR
Air conditioning—OFF
D For quick heating, select RECIRCULATED AIR mode for a
few minutes. To keep the windows from fogging, select
OUTSIDE AIR mode after the vehicle interior has been
warmed.
D Touch the "A/C" switch on for dehumidified heating.
D Choose floor/windshield air flow to heat the vehicle interior
while defrosting or defogging the windshield.
Air conditioning
For best results, set controls to:
For automatic operation—
Push in the "AUTO" button.
Temperature—To the desired temperature
Air intake—OUTSIDE AIR
Air conditioning—ON
AIR CONDITIONING
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