Lexus GS430 User Manual page 293

When the windshield air flow button is pushed while operating
in automatic mode, the air conditioning is set to operate and the
OUTSIDE AIR mode is set. This is to clean up the front view
more quickly. If you want to return the setting to the
RECIRCULATED AIR mode, push the air intake control button
once again.
Touch the "A/C" switch for dehumidified heating or cooling.
This setting clears the front view more quickly.
If you push the windshield air flow button once again while in
the windshield air flow mode, the mode then returns to the last
mode used.
CAUTION
Do not use the windshield air flow button during cooled
air operation in extremely humid weather.
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) Micro dust and pollen filter
This vehicle is equipped with a micro dust and pollen filter
mode. When this mode is activated, air from the vents will
remove pollen on the driver and passengers.
Use this mode to remove pollen quickly carried by the
driver or passengers or through the window in the days
with much pollen.
G21073
The
Push the micro dust and pollen filter button.
The indicator light comes on and RECIRCULATED AIR mode
is turned on. Air is delivered from the instrument panel vents
to the areas near the driver and passengers to remove pollen
on them. When the interior is purified sufficiently with fresh air
after about 3 minutes, this mode will be turned off automatically
and the indicator light will go out.
AIR CONDITIONING
269