Lexus 2004 GX470 Owner's Manual page 240

Fan speed — To the desired fan speed
Temperature — Towards low temperature
Air intake — OUTSIDE AIR
Air flow — PANEL
Air conditioning — ON
D For quick cooling, select RECIRCULATED AIR for a few
minutes.
Ventilation
Push in the "AUTO" button.
Temperature — Towards low temperature
Air intake — OUTSIDE AIR
Air conditioning — OFF
For best results, set controls to:
For automatic operation —
AIR CONDITIONING
225