Toyota Lexusc Owner's Handbook Manual page 295

AIR CONDITIONING
INFORMATION
D This automatic control has additional function as
described below, when the "AUTO" button is pushed.
The fan speed is stopped for a little while until warm
air preparation, when outside temperature is cold like
a winter season in the "Floor", "Bi-level" or
"Floor/Windshield" air flow mode. If quick removal
for exterior frost, fog and inside fog on the windshield
is desired, use the high fan speed setting after the
"Windshield" air flow mode has been selected.
The fan speed is stopped few seconds until cool air
preparation, when outside temperature is hot like a
summer season in the "Panel" or "Bi-level" air flow
mode.
D The internal circulation may be applied for maximum
cooling in the automatic operation mode, when
outside temperature is hot like a summer season.
If fresh outside air is desired into the vehicle, push
the air intake control button to select the OUTSIDE
AIR mode.
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