TOYOTA 2011 Highlander - Manual (Page 257)

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3-1. Using the air conditioning system and defogger
Adjusting the position of and opening and closing the air outlets
Front center outlets
Direct air flow to the left or right,
up or down.
Front side outlets
Direct air flow to the left or
right, up or down.
Turn the knob to open or close
the vent.
Rear center outlets (vehicles without rear air conditioning system)
Direct air flow to the left or
right, up or down.
Turn the knob to open or close
the vent.