ad blue MERCEDES-BENZ S350 2006 W221 Owner's Manual

127 Controls in detailSeats
Seat ventilation*
The switch is located on the door. Seat
ventilation can be activated manually with
the ignition switched on. The driver’s seat
ventilation can be activated automatically
by the summer opening feature
(page 210).
The blue indicator lamps on the switch
show the ventilation level selected:
1Seat ventilation switch

Switch on the ignition (
page 34).
Switching on seat ventilation

Press switch1.
Three blue indicator lamps above the
switch come on.
Continue pressing switch1 until the
desired seat ventilation level is
reached.Switching off seat ventilation

Press switch1 repeatedly until all in-
dicator lamps go out.
Level3
Three indicator lamps on
(highest level).
2
Two indicator lamps on.
1
One indicator lamp on
(lowest level).
off
No indicator lamp on.
iThe seat ventilation for the driver’s seat
is automatically set to the highest level
if activated via summer opening fea-
ture (
page 210).
iIf one or all of the lamps on the seat
ventilation switch are flashing, there is
insufficient voltage since too many
electrical consumers are switched on.
The seat ventilation switches off auto-
matically.
The seat ventilation will switch back on
again automatically as soon as suffi-
cient voltage is available.

195 Controls in detail
Automatic climate control
Deactivating the climate control sys-tem
Deactivating
It is possible to completely deactivate the
automatic climate control system. 
Press button M (
page 193).
The display shows
0.
Reactivating

Press button M (
page 193).
Setting the temperature
Use temperature controls aand8
(page 193) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
Increasing/decreasing

Press button a or 8 repeatedly until
the display shows the desired tempera-
ture.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adjusting the temperature for center
air vents
When outside temperatures are low, you
can manually raise the air temperature for
the center and side air vents. The
thumbwheel4 is located between the
center air vents (
page 192).Automatic temperature control

Turn thumbwheel 4 to A.
The indicator lamp above the thumb-
wheel comes on. The temperature is
automatically adjusted to the set value.
Turning on warm air

Turn thumbwheel4 in the direction of
the white marking.
Warm air will enter from the center air
vent.
Turning on cooler air

Turn thumbwheel4 in the direction of
the blue marking.
Cooler air will enter from the center air
vent.
iWhen the air conditioning is switched
off, the outside air supply and circula-
tion are also switched off. Only choose
this setting for a short time. Otherwise
the windows could fog up.