Toyota Lexusc Owner's Handbook Manual page 294

(a) Climate control
SETTING OPERATION — automatic control
1. Push the "AUTO" button.
An indicator light will illuminate to show that the automatic
operation mode has been selected.
Air flow quantity, switching of the diffusers, on-off of the air
conditioning and switching of the air intake between
RECIRCULATED AIR and OUTSIDE AIR are automatically
adjusted. When you press the "AUTO" button with the air
intake mode at OUTSIDE AIR, internal circulation may be
applied for maximum cooling. The operation status is shown
by each indicator.
When one of the manual control buttons is depressed while
operating in automatic mode, the operation corresponding to
the depressed button is set. Other conditions continue to be
adjusted automatically.
Push the "OFF" button to turn the air conditioning system off.
AIR CONDITIONING
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