Page 235 of 705

234 Control systemsCOMAND automatic climate controlOperating rear climate control* from the front
The “Rear)” function is used to oper-
ate the rear climate control via COMAND
and the buttons on the center console con-
trol unit (
page 434).
Switching on rear climate control oper-
ation from the front
Select climate control settings Cen-
tral climate control menu.
Selecting “Rear)”: Slide qmr or
rotate ymz.
Confirming selection: Press n.In the climate control settings, “)”
appears in the central menu. The rear
climate control can be operated from
the front.
Climate control settings, rear climate con-
trol1Rear temperature, left
2Rear air distribution, left
3Rear air volume
4Central menu for rear climate control
5Rear air distribution, right
6Rear temperature, right
The rear climate control is operated in the
same manner as the climate control sys-
tem for the driver’s and front passenger’s
side (
page 229).Central menu for rear climate control
In the central menu for the rear climate
control, you can:
switch back to operating the front cli-
mate control system
switch off the rear climate control
switch the automatic function of the
rear climate control from automatic to
manual
Select climate control settings Cen-
tral climate control menu.
Page 236 of 705

235 Control systems
COMAND automatic climate control
Switching off rear climate control oper-
ation from the front
Select climate control settings Cen-
tral climate control menu.
The current setting is indicated by a
dotR.
Selecting “Front Climate Control”:
Slide qmr or rotate ymz.
Confirming selection: Press n.
The climate control settings shows the
climate control settings for the driver
and front passenger.Switching off rear climate control
Select climate control settings Cen-
tral climate control menu.
The current setting is indicated by a
dotR.
Selecting “Rear Climate Control
OFF”: Slide qmr or rotate ymz.
Confirming selection: Press n.
The rear climate control is switched off.Switching on the automatic function of
the rear climate control
Select climate control settings Cen-
tral climate control menu.
The current setting is indicated by a
dotR.
Selecting “Rear Automatic”:
Slideqmr or rotate ymz.
Confirming selection: Press n.
The automatic function of the rear cli-
mate control is switched on.
Page 423 of 705

422 Controls in detailDriving systemsDirty or fogged-up windshield
If the windshield in front of the camera is
fogged up on the inside or outside or if it is
dirty, the Night View Assist image is dimin-
ished.Removing condensation
1Recessed handles on camera cover
Fold camera cover downward using re-
cessed handles1.
Check settings of automatic climate
control and change them, if necessary
(page 424).
Once the image is no longer impaired:
Fold camera cover back up using re-
cessed handles1.Cleaning inside of windshield
Clean inside of windshield in front of
camera (
page 539).
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his/her primary focus when driving. For
your safety and the safety of others, stop be-
fore trying to remove window fogging or
cleaning the window in front of the Night
View Assist camera.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
Page 428 of 705

427 Controls in detail
Automatic climate control
The automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing on the selected interior temperature
and the current outside temperature.
It can only function optimally when you are
driving with the windows and the tilt/slid-
ing sunroof/panorama sunroof* closed.
It is possible to completely deactivate the
climate control system (
page 428). Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.The following automatic climate control
functions can be operated via COMAND:
i
If you have the air distribution and air vol-
ume automatically controlled, you can adjust the
temperature, footwell temperature and air flow.
The following basic settings are recommended:
Automatic air distribution control
(page 428)
Temperature: 72°F (22°C) (
page 429)
Footwell temperature: 0 (
page 232)
Air flow: focused (
page 233)
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pages
and in the “COMAND automatic climate
control” section (
page 229). Otherwise
the windows could fog up, impairing visibili-
ty and endangering you and others.
i
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before its
scheduled interval. A clogged filter will reduce
the air volume to the interior.
If the vehicle interior is hot, ventilate the interior
before driving off, see “Summer opening fea-
ture” (page 355). The automatic climate con-
trol will then adjust the interior temperature to
the set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow, leaves, sticks, and any other
debris.
Do not obstruct air volume by placing objects on
the air volume-through exhaust slots below the
rear window.Function
Page
Temperature
230
Air distribution
230
Air volume
230
Switching off cooling (“AC
OFF”)
231
Central climate control (“Mono”)
232
Footwell temperature
232
Air flow from air vents
233
Rear climate control*
234
Page 431 of 705

430 Controls in detailAutomatic climate controlDeactivating
Press button; (
page 426) up or
down.
The indicator lamp on the button goes
out.
The previous settings are once again in
effect, except air recirculation mode
stays off.
Windshield fogged on the outside
Switch the windshield wipers on
(page 351).
Press buttonU (
page 426) up or
down.
The indicator lamp on the button
comes on.
Rear window defroster
Activating
Switch on the ignition (
page 315).
Press button< (
page 426) up or
down.
The indicator lamp on the button
comes on.
Deactivating
Press button< (
page 426) up or
down.
The indicator lamp on the button goes
out.
Maximum cooling MAXCOOL (USA only)
If U is selected on both the left and
right side and there is a high demand for
cooling, the display “MAXCOOL” appears
in the COMAND display.
This provides the fastest possible cooling
of the vehicle interior (when windows and
tilt/sliding sunroof or tilt/sliding panel*
are closed).
!
The rear window defroster uses a large
amount of power. To keep battery drain to a min-
imum, switch off the defroster as soon as the
rear window is clear.
i
The defroster is automatically deactivated
after some time of operation depending on the
outside temperature.Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.
i
If the rear window defroster switches off too
soon and the indicator lamp goes out, this indi-
cates that too many electrical consumers are op-
erating simultaneously and the load on the
battery is reducing available voltage. The system
responds automatically by deactivating the rear
window defroster.
i
Maximum cooling MAXCOOL is only avail-
able when the engine is running.
Page 435 of 705

434 Controls in detailAutomatic climate controlRear passenger compartment adjust-able air vents
Rear center console air vents
1Left center air vent, adjustable
2Right center air vent, adjustable
3Thumbwheel for right center air vents
4Thumbwheel for left center air vents
Opening/closing air vents:
Turn thumbwheel3 or 4.Rear passenger compartment climate
control*
Automatic climate control panel, rear
i
Vehicles without rear passenger compart-
ment climate control*:
The temperature at the air vents for rear passen-
ger compartment1 and2 will be approxi-
mately the same as at the dashboard center air
vents.
Warning!
G
Follow the recommended settings for heat-
ing and cooling as given in the instructions
for the front climate control (
page 424).
Otherwise the windows could fog up, impair-
ing visibility for the driver and endangering
you and others.
i
At low outside temperatures or if you have
switched off the cooling function, you cannot
cool the rear passenger compartment.
Item
1
Temperature control, left
2
Air distribution, left
(automatic, manual)
3
Air volume (automatic, manual)
4
Mode selector
5
Air distribution, right
(automatic, manual)
6
Temperature control, right