Micro dust and pollen filter mode button
Lexus GX / Lexus GX Owners Manual / Interior features / Using the air conditioning system and defogger / Front automatic air conditioning system / Micro dust and pollen filter mode button
Operates micro dust and pollen fil- ter on/off.
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.
See also:
Automatic High Beam
The Automatic High Beam uses an in-vehicle camera sensor to assess the brightness
of streetlights, the lights of oncoming and preceding vehicles, etc., and automatically
turns high beam on or off ...
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by
your Lexus dealer or a commercial towing service, using a lift-type
truck or a flat bed truck.
Use a safety chain system for all ...