Toyota Land Cruiser 2006 Owner's Manual page 217

Lower vent
If air flow control is not satisfactory, check
the instrument panel vents. The instrument
panel vents may be opened or closed as
shown.
For removing frost or fog, it is recom-
mended that you close the lower vent
when you use the "Floor", the "Floor/Wind-
shield" or the "Windshield" mode.
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