Mercedes-Benz 2012 B Class - Manual (Page 133)

Setting the rear-compartment air
vents
:
Rear-compartment air vent, left
;
Rear-compartment air vent, right
=
Rear-compartment air vent thumbwheel
X To open/close: turn thumbwheel = up or
down.
Setting the air vents
131
Climate control
Z