TOYOTA 2012 Yaris Hatchback - Manual (Page 176)

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3-1. Using the air conditioning system and defogger
Adjusting the position of and opening and closing the air outlets
Center outlets
Direct air flow to the left or right,
up or down.
Right and left side outlets
Direct air flow to the left or right,
up or down.
Open the vent.
Close the vent.