Lexus LS460 2008 Owner's Manual page 270

3-2. Using the air conditioning system and defogger
■
Switching between outside air and recirculated air modes
Press
The mode switches between
and (introduces air from outside the vehicle) modes each time the
button is pressed.
When the air intake control system is switched to automatic mode, it oper-
ates automatically.
Turning the air purifier off
Touch on the operation screen.
The air purifier will turn off when the indicator on the switch goes off. Air will
not flow from the roof vents.
To turn the air purifier on, touch
270
.
(recycles air inside the vehicle), "AUTO"
again.