Lexus GS 450h 2008 Owner's Manual page 237

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Switching between outside air and recirculated air modes

The mode switches between

(introduces air from outside the vehicle) modes each time the

button is pressed.

When the system is switched to automatic mode, the air conditioning sys-

tem operates automatically.

3-2. Using the air conditioning system and defogger

Air flows to the feet.

Air flows to the feet and the wind-

shield defogger operates.

(recycles air inside the vehicle), "AUTO"