Mercedes-Benz R 350 Operator's Manual page 148

Setting the rear-compartment side air
vents
2nd row of seats
B-pillar air vent
:
Thumbwheel for B-pillar air vent
;
To open/close: turn thumbwheel ; to the
X
left or right.
3rd row of seats
B-pillar air vent
Defroster vent
:
B-pillar air vent
;
Thumbwheel for B-pillar air vent
=
To open/close: turn thumbwheel = up or
X
down.
Setting the air vents
145
Z