Mercedes-Benz S-Class 2011 Operator's Manual page 298

Setting the air vents
296
Rear control panel for automatic climate
?
control
Rear-compartment air vent thumbwheel,
A
left
X
To open/close: turn thumbwheels = or
A to the right or left.
i In vehicles without rear-compartment air-
conditioning system: close the rear-
compartment air vents when heating mode
is activated as no warm air flows through
the rear vents in the basic heating setting.
Setting the rear-compartment side air
vents
B-pillar air vent
:
Thumbwheel for B-pillar air vent
;
X
To open/close: turn thumbwheel ; to the
left or right.