2010 MERCEDES-BENZ CL CLASS climate control

X
Changing air volume: Slide ZVÆ or rotate
cVd.
or
X Switching back to automatic mode:
Rotate cVd and select AUTO.
X Exiting menu: Press W, back button
% in the center console (Y page 69) or
slide XVY.
The setting is saved. Central climate control menu via
COMAND
The central climate control menu is in the
center of the climate control settings. When
the climate control is activated, you will see
AC in the central menu. The following
functions can only be operated in the central
climate control menu via COMAND:
R Deactivating cooling (Æ) (Y page 196)
R Central climate control (Mono)
(Y page 196)
R Footwell temperature ( Y page 197)
R Air flow from air vents (Y page 197)
X Select climate control settings Q Central
menu. Activating/deactivating air
conditioning
The air conditioning is operational while the
engine is running and cools the interior air to
the temperature set by the operator. In addition, the air conditioning dehumidifies
the interior air and helps prevent window
fogging.
i
Condensation may drip out from
underneath the vehicle. This is normal and
not an indication of a malfunction. G
Warning!
If you deactivate the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
X Select climate control settings Q Central
climate control menu.
X Selecting Æ: Slide ZVÆ or rotate
cVd.
X Confirming selection: Press W.
A checkmark appears when the cooling is
deactivated.
Æ appears in the central menu of the
climate control settings. !
If the air conditioning cannot be activated
again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned off.
Have the air conditioning checked at the
nearest authorized Mercedes-Benz Center.
Selecting Mono mode Mono is used to adjust the climate zones for
the entire vehicle at the same time. When the
Mono function is switched on and you change
the climate on the driver’s side, these
changes will be carried out in the same
manner for all climate zones.196
COMAND automatic climate controlControl systems
216_AKB; 3; 90, en-US
d2ureepe,
Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 196

X
Select climate control settings Q Central
climate control menu.
X Selecting Mono: Slide ZVÆ or rotate
cVd.
X Confirming selection: Press W.
A checkmark appears when the function
has been selected. X
Exiting menu: Press back button % in
the center console (Y page 69) or slide
XVY.
The Mono function is automatically switched
off when you:
R change a climate control setting for the
front passenger side using COMAND
R operate a button from the climate control
for the front passenger side
R operate one of the buttons for the rear
climate control system
Adjusting footwell temperature i
In automatic mode, this setting optimizes
the footwell temperature when outside
temperatures are low.
The Footwell Temperature function is used
to adjust the temperature difference between
the footwell and the rest of the passenger
compartment.
The higher the selected value, the higher the
temperature in the footwell will be.
X Select climate control settings Q Central
climate control menu.
X Selecting Footwell Temperature: Slide
ZVÆ or rotate cVd and then press W. X
Changing temperature difference: Slide
ZVÆ or rotate cVd.
X Exiting menu: Press W, back button
% in the center console (Y page 69) or
slide XVY.
The setting is saved.
Adjusting air flow from air vents i
In automatic mode, this setting optimizes
the air flow when outside temperatures are
high.
The Airflow setting defines air distribution
and air volume in automatic mode:
R Focused (default setting, increased air
flow)
R Medium (reduced air flow)
R Diffuse (minimal air flow)
i When the interior ambient temperature of
the vehicle is very hot and the climate
control is cooling the interior, the setting
for air flow is temporarily overridden.
X Select climate control settings Q Central
climate control menu Q Airflow.
A selection list appears.
The current setting is indicated by a
dot #. COMAND automatic climate control
197Control systems
216_AKB; 3; 90, en-US
d2ureepe, Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 197 Z

Vehicle equipment ............................
252
Locking and unlocking .....................252
Starter switch positions ................... 262
Seats .................................................. 264
Multifunction steering wheel ..........270
Mirrors ............................................... 271
Memory function .............................. 273
Lighting .............................................. 274
Wipers ................................................ 280
Power windows ................................. 282
Driving and parking .......................... 285
Automatic transmission ................... 291
Transfer case .................................... 299
Instrument cluster ............................300
Driving systems ................................ 301
Climate control system ....................338
Rear window defroster ..................... 344
Power tilt/sliding sunroof ...............345
Loading and storing ..........................347
Useful features ................................. 350 251Controls in detail
216_AKB; 3; 90, en-US
d2ureepe,
Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 251

buttons, you must first switch off the Night
View Assist.
:
Night View Assist image
; Speedometer dial
Adjusting instrument cluster illumination
If you change the brightness of the
instrument cluster while the Night View
Assist is switched on, only the brightness of
the multifunction display is changed. X
Make sure the Night View Assist is
switched on.
X Brightening illumination: Turn knob :
clockwise.
X Dimming illumination: Turn knob :
counterclockwise. Dirty or fogged-up windshield The Night View Assist image is diminished
when the windshield in front of the camera is
R
dirty
R fogged up on the outside
R fogged up on the inside G
Warning!
Please do not forget that your primary
responsibility 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 before trying to
remove window fogging or cleaning the
windshield 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
(approximately 14 m) every second.
X Removing condensation: Check settings
of the climate control and change them, if
necessary ( Y page 338).
X Swing the camera cover downward
(Y page 407).
X Cleaning inside of windshield: Use a soft,
non-scratching cloth (Y page 407). Blind Spot Assist
The Blind Spot Assist uses radar sensors to
monitor the area on both sides of your
vehicle. It will assist you when you change
lanes driving at speeds of above 20 mph
(30 km/h). A red warning lamp will come on
in the exterior rear view mirror as soon as
another vehicle is detected. If you then
activate the corresponding turn signals to
change lanes, the red warning lamp flashes
and warning sounds (collision warning). The
Blind Spot Assist operates using two sensors
in the front bumper and four sensors in the
rear bumper. Driving systems
335Controls in detail
216_AKB; 3; 90, en-US
d2ureepe, Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 335 Z

The brightness of indicator lamps/warning
lamps
: is controlled automatically
depending on the brightness of the ambient
light. G
Warning!
The Blind Spot Assist is not active at speeds
below approximately 20 mph (30 km/h). The
yellow indicator lamps in the exterior rear
view mirrors are illuminated. You will not be
alerted to the presence of vehicles in the
monitored area at these speeds.
It is the driver’s responsibility at all times to
be attentive to road, weather and traffic
conditions and to provide the steering,
braking and other driving inputs necessary to
retain control of the vehicle. Failure to do so
could result in recognizing dangers too late,
possibly resulting in an accident and serious
injury to yourself and others. Collision warning If a vehicle is detected in the Blind Spot Assist
range and you activate the turn signal, a two-
tone warning will sound once. Red warning
lamp
: on the corresponding side of the
vehicle will flash. G
Warning!
Do not change lanes or make turns, while red
warning lamp : is flashing. Doing so could
result in an accident and serious injury to
yourself and others.
X Remain on the lane that you are currently
on until traffic conditions permit to change.
If the turn signal remains on, red warning
lamp : will flash to indicate that vehicles
have been detected. No further audible
warnings will sound. Climate control system
Control panel
Function Recommendation/Notes
1
Air distribution and
air volume, driver’s
side (automatic
mode) i
Switch on the automatic mode. The
indicator lamp in button à comes on. (Y page 341)
2
Temperature
control, driver’s side i
Set the temperature to 72‡ (22†). (Y page 341)338
Climate control systemControls in detail
216_AKB; 3; 90, en-US
d2ureepe,
Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 338

Function Recommendation/Notes
3
Manual fan speed
adjustment, driver’s
side (Y page 342)
4
Front defroster i
Keep this setting selected only until the
windshield or the side windows are clear
again. (Y page 343)
5
Air recirculation i
Only use this function for a short time,
e.g. in a tunnel. Otherwise, the windows
can fog up due to lack of fresh air. (Y page 343)
6
Climate control on/
off i
Switch on/off the climate control
system. (Y page 340)
7
Residual heat/
ventilation i
With the
engine turned off, it is possible
to continue to heat or ventilate the
interior. (Y page 344)
8
Rear window
defroster (Y page 344)
9
Manual fan speed
adjustment,
passenger side (Y page 342)
a
Temperature
control, passenger
side i
Set the temperature to 72 ‡ (22†). (Y page 341)
b
Air distribution and
air volume,
passenger side
(automatic mode) i
Switch on the automatic mode. The
indicator lamp in button à comes on. (Y page 341)
Notes on climate control system
i If you have the air distribution and air
volume automatically controlled, you can
adjust the temperature, footwell
temperature and air flow. The following
basic settings are recommended:
R Automatic air distribution control
(Y page 341)
R Temperature: 72‡ (22†) (Y page 341) R
Footwell temperature: 0 (Y page 197)
R Air flow: focused ( Y page 197)
The climate control system is operational
whenever the engine is running. You can
operate the climate control system in either
the automatic or manual mode. The system
cools or heats the interior depending on the
selected interior temperature.
It can only function optimally when you are
driving with the windows and the tilt/sliding
sunroof closed. Climate control system
339
Controls in detail
216_AKB; 3; 90, en-US
d2ureepe, Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 339 Z

Nearly all dust particles, pollutants and odors
are filtered out before outside air enters the
passenger compartment through the air
distribution system.
G
Warning!
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled
replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a clogged filter replaced as soon as
possible at an authorized Mercedes-Benz
Center. G
Warning!
Follow the recommended settings for heating
and cooling

given on the following pages and
in the “COMAND automatic climate control”
section. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
X Keep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing objects on
the air flow-through exhaust slots below the
rear window.
i If the vehicle interior is hot, ventilate the
interior before driving off, see “Summer
opening feature”

(Y page 283). The climate
control will then adjust the interior
temperature to the set value much faster.
The following climate control functions can
be operated via COMAND:
R Temperature ( Y page 194)
R Air distribution (Y page 195)
R Air volume ( Y page 195)
R Switching off cooling (Æ) (Y page 196)
R Central climate control (Mono)
(Y page 196)
R Footwell temperature ( Y page 197)
R Air flow from air vents (Y page 197) Deactivating the climate control
system
G
Warning!
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could

fog up, impairing visibility and
endangering you and others.
X Deactivating: Press
rocker switch ^ up
or down.
The indicator lamp in the rocker switch
comes on. You will see Climate Control
OFF in the COMAND display.
X Reactivating: Press

rocker switch ^ up
or down.
The indicator lamp in the rocker switch
goes out. You will see the previous settings
in the COMAND display. Air conditioning
The air conditioning is operational while the
engine is

running and cools the interior air to
the temperature set by the operator. In
addition, the air conditioning dehumidifies
the interior air and helps prevent window
fogging. G
Warning!
If you deactivate the air conditioning, the
vehicle will not be cooled when weather
conditions are

warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
i Condensated water may drip out from
underneath the vehicle. This is normal and
not an indication of a malfunction.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs which
are harmful to the ozone layer. 340
Climate control system
Controls in detail
216_AKB; 3; 90, en-US
d2ureepe,
Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 340

The cooling function can be activated or
deactivated via COMAND (
Y page 196).Automatic mode
When operating the climate control system in
automatic mode, the interior air temperature,
air volume and air distribution are adjusted
automatically.
In automatic mode, cooling with
dehumidification is switched on. This function
can be switched off if necessary. G
Warning!
If you deactivate the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
X Set the desired temperature
(Y page 341).
X Activating: Press rocker switch à up or
down.
The indicator lamp in the rocker switch
comes on.
X Deactivating: Press rocker switch K up
or down.
or
X Adjust air distribution via COMAND
(Y page 195).
The indicator lamp in rocker switch Ã
goes out. Setting temperature
You can adjust the air temperature for each
of the 3 zones separately. You should raise or
lower the temperature setting in small
increments, preferably starting at 72‡
(22†). X
Increasing/decreasing: Press rocker
switches w up or down or use COMAND
(Y page 194).
The climate control system will
correspondingly adjust the interior air
temperature. Adjusting air vents
G
Warning!
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
may cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
For best possible performance of the climate
control:
X Keep the air intake grille in front of the
windshield free of snow, leaves, sticks, and
any other debris.
X Always keep all air vents and grilles in the
passenger compartment free from
obstruction. Climate control system
341Controls in detail
216_AKB; 3; 90, en-US
d2ureepe, Version: 2.11.8.1 2009-05-15T11:47:50+02:00 - Seite 341 Z