Lexus 2014 LX570 Owner's Manual page 446

3-2. Using the air conditioning system and defogger
Defogging the windshield
Micro dust and pollen filter
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LX570_OM_OM60L21U_(U)
Press
.
The air conditioning system control
operates automatically.
Recirculated air mode will auto-
matically switch to outside air
mode.
Press .
Outside air mode switches to
(recirculated air) mode. Pol-
len is removed from the air and the
air flows to the upper part of the
body.
Usually the system will turn off
automatically after approximately
3 minutes.
To stop the operation, press
again.