Lexus OM48A84U Owner's Manual page 302

AIR CONDITIONING
D
Switching between outside air and
recirculated air modes
Push the air intake control button.
The mode switches between outside air
mode (the indicator is off), "AUTO" mode
and recirculated air mode (the indicator is
on) each time the button is pushed.
304
(d) Defogging the windshield
The air conditioning system operates
automatically.
Recirculated air mode will automatically
switch to outside air mode. It is not pos-
sible to return to recirculated air mode
when the switch is on.
CAUTION
To prevent the windshield from fog-
ging up
Do not use the windshield air flow
button during cool air operation in
extremely humid weather. The differ-
ence between the temperature of the
outside air and that of the windshield
can cause the outer surface of the
windshield to fog up, blocking your
vision.