Vents
Right and Left
Adjust air flow direction by moving the vent slides.
Open or close the vents by using the dial. Move
the dial toward the 
to open the
vents or
toward the 
to close them.
Center
Rear (sedan, if so equipped)
See also:
Unfastening the seat belts
1 To unfasten the seat belt, press the button on
the buckle. The seat belt automatically retracts. ...
2010 Nissan Altima review
A variety of vehicles have enjoyed their day in the sun: Wagons until they
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Precautions on seat belt usage
If you are wearing your seat belt properly adjusted
and you are sitting upright and well back in
your seat with both feet on the floor, your chances
of being injured or killed in an accident a ...