Toyota Lexusc Owner's Handbook Manual page 297

AIR CONDITIONING
2. Use the "TEMP" or "PASSENGER TEMP" button to set
the desired vehicle interior temperature.
The "TEMP" or "PASSENGER TEMP" selector button is used
to set the desired interior temperature.
temperature will be controlled on the driver and passenger side
room zones simultaneously or individually.
To increase the interior temperature, press the " " side, to
decrease it, press the " " side.
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If quick heating or cooling is desired —
"LO" appears when you hold it until maximum cooling
(decrease), and "HI" appears when you hold it until maximum
warning (increase).
"TEMP" button — Changes the temperature on the driver and
passenger sides simultaneously or the driver side only.
"PASSENGER TEMP" button — Changes the temperature
settings separate from the driver side.
The interior