MERCEDES-BENZ CL CLASS 2010 Owners Manual

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
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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
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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
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i
For draft-free ventilation, move the
adjustable center and side air vents to the
middle position.
Center air vents :
Cockpit air vent, fixed
; Right center air vent, adjustable
= Thumbwheel for air volume control for
adjustable right center air vent
? Thumbwheel for air volume control for
adjustable left center air vent
A Left center air vent, adjustable
X Opening/closing: Turn thumbwheels =
and ? upward or downward.
Side air vents Example illustration driver’s side
:
Left side defroster air vent, fixed
; Left side air vent, adjustable
= Thumbwheel for air volume control for
adjustable left side air vent X
Opening/closing: Turn thumbwheel =
upward or downward.
Rear center console air vents :
Left rear center air vent, adjustable
; Right rear center air vent, adjustable
= Thumbwheel for air volume control for
right rear center air vent
? Thumbwheel for air volume control for left
rear center air vent
X Opening/closing: Turn thumbwheel =
or ? in the required direction. Adjusting air distribution
The air distribution can be adjusted
separately on each side of the passenger
compartment.
Air distribution in front/rear passenger
compartment via COMAND The air distribution can be adjusted via
COMAND (Y page 195).
Adjusting air volume
You can adjust the air volume separately on
each side of the passenger compartment.
You can adjust the air volume via COMAND
(Y page 195).
X Decreasing/increasing: Press rocker
switches K up or down. 342
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Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
door windows.
i Keep this setting selected only until the
windshield or the door windows are clear
again.
Activating X
Press rocker switch ¬ up or down.
The indicator lamp in the rocker switch
comes on.
The climate control switches to the following
functions automatically:
R most efficient blower speed and heating
power, depending on outside temperature
R air flows onto the windshield and the door
windows
R the air conditioning compressor switches
on at outside temperatures above
approximately 41‡ (5†) for air-drying
Adjustments
You can adjust the air volume and the
temperature when the front defroster is
switched on. The air flow will remain on the
windshield and door windows.
X Press rocker switch K up or down to
increase or decrease air volume to the
desired level.
The air
volume increases/decreases to the
next higher/lower blower speed and
heating switches to the temperature that
was set before the front defroster was
switched on.
The indicator lamp in rocker switch ¬
goes out.
or
X Press rocker switches w up or down.
Heating switches to the temperature that
was set before the front defroster was
switched on. The indicator lamp in rocker switch ¬
goes out.
i The air conditioning compressor remains
on even with the indicator lamp in button
¬ goes out. This helps to prevent
windshield from fogging.
Deactivating X
Press rocker switch ¬ up or down.
The indicator lamp in the rocker switch
goes out.
The previous settings are once again in
effect, except air recirculation mode stays
off.
Windshield fogged on the outside X
Switch the windshield wipers on
(Y page 280).
X Press rocker switch à up or down.
The indicator lamp in the rocker switch
comes on. Maximum cooling MAX COOL
MAX COOL is only available in U.S. vehicles.
MAX COOL is only operational when the
engine is running.
If à 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 are closed). Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e. g. before driving through
a tunnel). This setting cuts off the intake of
outside air and recirculates the air in the
passenger compartment. Climate control system
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G
Warning!
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press button
¬.
X Activating: Press rocker switch g up or
down.
The indicator lamp in the rocker switch
comes on.
i The air recirculation mode is activated
automatically at high outside
temperatures.
The indicator

lamp in rocker switch g is
not lit when the air recirculation mode is
switched on automatically.
A quantity of outside air is added when the
cooling demand is not at maximum.
If the air conditioning has been turned off
or the outside temperature is below 41‡
(5†), the air recirculation mode will not
switch on automatically.
X Deactivating: Press
rocker switch g up
or down.
The indicator lamp in the rocker switch
goes out.
i The manually selected air recirculation
mode is deactivated automatically:
R after 5 minutes if the outside
temperature is below approximately
41‡ (5†)
R after 5 minutes if the air conditioning is
turned off
R after 30 minutes if the outside
temperature is above approximately
41‡ (5†) Residual heat and ventilation
With the engine turned off, it is possible to
continue to heat or ventilate the interior for
up to 30 minutes. This feature makes use of
the residual heat produced by the engine.
i If you

switch on the residual heat function
when outside temperatures are high, only
the ventilation will be switched on.
i Regardless of the selected air volume, the
blower operates at low speed when
heating. In case of ventilation the blower
operates at higher speed.
i How long the system will provide heating
depends on the coolant temperature and
the selected temperature. The blower will
run at low speed regardless of the air
distribution control setting.
X Activating: Switch off the ignition.
X Press rocker switch Ì up or down.
The indicator lamp in the rocker switch
comes on.
X Deactivating: Press
rocker switch Ì up
or down.
The indicator lamp in the rocker switch
goes out.
The residual heat is deactivated
automatically:
R when the ignition is switched on
R after approximately 30 minutes
R if the battery voltage drops
R if the coolant temperature is too low Rear window defroster
G
Warning!
Any accumulation of snow and ice should be
removed from

the rear window before driving.
Visibility could otherwise be impaired,
endangering you and others. 344
Rear window defroster
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The rear window defroster uses a large
amount of power. To keep the battery drain
to a minimum, switch off the defroster as
soon as the rear window is clear. The
defroster is switched off automatically after
approximately 6 to 17 minutes of operation
depending on the outside temperature.
X
Switch on the ignition.
X Switching on: Press rocker switch ¤
up or down.
The indicator lamp in the rocker switch
comes on.
X Switching off: Press rocker switch ¤
up or down.
The rear window defroster switches off when
the battery voltage is too low. Too many
electrical consumers may be operating
simultaneously.
X Switch off consumers that are currently not
needed if required. Power tilt/sliding sunroof
Opening and closing
G
Observe Safety notes, see page 51. G
Warning!
When opening or closing the tilt/sliding
sunroof, make sure there is no danger of
anyone being
harmed by the opening/closing
procedure.
The tilt/sliding sunroof is equipped with the
express operation and automatic reversal
function. If the movement of the tilt/sliding
sunroof is blocked during the closing
procedure, the tilt/sliding sunroof will stop
and open slightly.
The tilt/sliding sunroof operates differently
when the sunroof switch is pressed and held.
See the “Closing when the tilt/sliding sunroof
is blocked” section for details.
The opening/closing procedure of the tilt/
sliding sunroof can be immediately halted by
releasing the sunroof switch or, if the sunroof switch was moved past the resistance point
and
released,

by moving the sunroof switch in
any direction. G
Warning!
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also

presents a potential for injury for
occupants wearing their seat belts properly as
entire body parts or portions of them may
protrude from the passenger compartment.
! To avoid damaging the seals, do not
transport any objects with sharp edges
which can stick out of the tilt/sliding
sunroof.
Do not open the tilt/sliding sunroof if there
is snow or ice on the roof, as this could
result in malfunctions.
If you cannot open or close the tilt/sliding
sunroof due to a malfunction contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
! Please keep in mind that weather
conditions can sometimes change rapidly.
Make sure to close the tilt/sliding sunroof
when leaving the vehicle. If water enters
the vehicle interior, vehicle electronics
could be damaged which is not covered by
the Mercedes-Benz Limited Warranty.
i You can also open or close the tilt/sliding
sunroof using the SmartKey or the
KEYLESS-GO function, see “Summer
opening feature” ( Y page 283) and
“Convenience closing feature”
(Y page 284).
i After switching off the ignition or
removing the SmartKey from the starter
switch, you can operate the tilt/sliding Power tilt/sliding sunroof
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sunroof until you open the driver’s or
passenger door. If no door was opened you
can operate the tilt/sliding sunroof for up
to 5 minutes.
Sunroof switch
:
Raising
; Opening
= Closing
With the sunroof closed or raised, you can
slide the sunroof screen forward and back.
X Switch on the ignition.
Opening X
Opening manually: Press and hold the
sunroof switch to the resistance point in
direction of arrow ;.
X Release the sunroof switch when the
desired position is reached.
X Express operation: To open the tilt/
sliding sunroof completely, press the
sunroof switch past the resistance point in
direction of arrow ; and release.
X Stopping during express operation:
Move the sunroof switch in any direction.
i Express opening is not available when the
tilt/sliding sunroof is raised. The tilt/
sliding sunroof must be closed first.
i When the tilt/sliding sunroof is open,
resonance noises may result in addition to
the usual wind noises. They are caused by
minimal pressure changes in the passenger
compartment. To reduce or eliminate these noises, change the position of the tilt/
sliding sunroof or open a window slightly.
Raising X
Raising manually: Press and hold the
sunroof switch to the resistance point in
direction of arrow :.
X Release the sunroof switch when the
desired position is reached.
X Express operation: To raise the tilt/
sliding sunroof completely, press the
sunroof switch past the resistance point in
direction of arrow : and release.
X Stopping during express operation:
Move the sunroof switch in any direction.
i Express raising is not available when the
tilt/sliding sunroof is open. The tilt/sliding
sunroof must be closed first.
Closing X
Closing manually: Pull and hold the
sunroof switch to the resistance point in
direction of arrow =.
X Release the sunroof switch when the
desired position is reached.
X Express operation: To close the tilt/
sliding sunroof completely, pull the sunroof
switch past the resistance point in
direction of arrow = and release.
X Stopping during express operation:
Move the sunroof switch in any direction.
Closing when the tilt/sliding sunroof is
blocked G
Warning!
Make sure that nobody can become trapped
and be seriously or even fatally injured when
closing the tilt/sliding sunroof with greater
force or without automatic reversal function. 346
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If the movement of the tilt/sliding sunroof is
blocked
during
the closing procedure (e.g. by
ice or pollution), the tilt/sliding sunroof will
stop and open slightly.
X Immediately after the tilt/sliding sunroof
has stopped and opened because it was
blocked, pull and hold the sunroof switch
in direction

of arrow = until the tilt/sliding
sunroof is fully closed.
The tilt/sliding sunroof closes with greater
force.
If the tilt/sliding sunroof is blocked again and
opens slightly:
X Immediately after the tilt/sliding sunroof
was blocked

and has opened, pull and hold
the sunroof switch in direction of arrow
= until the tilt/sliding sunroof is fully
closed.
The tilt/sliding sunroof closes without
automatic reversal function. G
Warning!
Pulling and holding the sunroof switch to
close the tilt/sliding sunroof immediately
after it

had been blocked two times will cause
the tilt/sliding sunroof to close without any
reversal function for as long as you hold the
sunroof switch. Synchronizing
The tilt/sliding

sunroof must be synchronized
after a malfunction or if it does not open
smoothly.
! If the tilt/sliding sunroof cannot be closed
or synchronized, contact an authorized
Mercedes-Benz Center or call Roadside
Assistance.
X Switch on the ignition.
X Press and hold the sunroof switch in
direction of

arrow : (Y page 346) until the
tilt/sliding sunroof is fully raised at the
rear. X
Keep holding the sunroof switch in
direction of arrow : for approximately
1 second.
X Check the express operation feature
(Y page 346).
If the

tilt/sliding sunroof opens and closes
completely, the roof is synchronized.
Otherwise repeat the above steps. Loading and storing
Loading instructions
G
Warning!
Always fasten items being carried as securely
as possible using fastening materials
appropriate for the weight and size of the
load.
In an

accident, during hard braking or sudden
maneuvers, loose items will be thrown around
inside the vehicle. This can cause injury to
vehicle occupants unless the items are
securely fastened in the vehicle.
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
transporting cargo. Do not pile luggage or
cargo higher than the seat backrests.
The trunk is the preferred place to carry
objects. Do not place anything on the rear-
window shelf.
Never drive a vehicle with the trunk open.
Deadly carbon monoxide (CO) gases may
enter vehicle interior resulting in
unconsciousness and death.
Load distribution The total load weight including vehicle
occupants and luggage/cargo should not
exceed the total load limit indicated on the
corresponding Tire and Loading Information
placard located on the driver’s door
B-pillar
(

Y page 382).
The handling characteristics of a fully loaded
vehicle depends greatly on the load
distribution. It is therefore recommended to Loading and storing
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load the vehicle accordingly with the heaviest
items being placed towards the front of the
vehicle.
Please pay attention to and comply with the
following instructions when loading the
vehicle and transporting cargo:
R
Always place items being carried against
front or rear seat backrests, and fasten
them as securely as possible.
R The heaviest portion of the cargo should
always be kept as low as possible against
front or rear seat backrests. Parcel nets
G
Warning!
Parcel nets are intended for storing light-
weight items only, such as road maps, mail,
etc.
Heavy objects, objects with sharp edges, or
fragile objects may not be transported in the
parcel nets. In an accident, during hard
braking, or sudden maneuvers, they could be
thrown around inside the vehicle and cause
injury to vehicle occupants.
Parcel nets cannot protect transported goods
in the event of an accident.
Parcel nets are located in the front passenger
footwell and on the right trunk side wall. Retaining hook
A retaining hook can be used to attach cargo
items such as bags.
! Do not use the retaining hook to tie down
cargo. X
Pull strap : of retaining hook ; down. Front storage compartments
G
Warning!
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
storing objects in the vehicle. Put luggage or
cargo in the trunk if possible.
Do not pile luggage or cargo higher than the
seat backrests.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
R braking
R vehicle maneuvers
R an accident
Glove box X
Opening: Press glove box lid release :.348
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