AIR VENT OPERATION
Do not insert or attach items to the vents, e.g., pens, air fresheners, etc.
Do not use excessive force while operating the vent control or the thumbwheel.
The vents can be opened using the following procedure:
To open the vent, rotate the thumbwheel fully upwards, from the bottom (closed) position to the top (open) position.
After the vent has been opened using the thumbwheel, use the direction control to adjust the direction of air flow.
The vent can only be fully closed again using the thumbwheel. The vent can be closed regardless of the position of the directional control.