cooling MERCEDES-BENZ CL550 2010 W216 Owner's Manual

C
CAC (Customer Assistance Center) ...23
California retail buyers and
lessees, important notice for .............21
Calls (phone) ..............................
135, 211
Can holders see Cup holders

Capacities and recommended
fuel/lubricants .................................. 490
Carpets, cleaning .............................. 409
CD player ............................................ 162
Central locking
Automatic ...................................... 257
KEYLESS-GO .................................. 253
Locking/unlocking from inside ...... 257
SmartKey ....................................... 252
Central locking/unlocking switch ...257
Certification label .............................. 480
Children in the vehicle
Air bags ........................................... 37
Child seat anchors – LATCH-type
(ISOFIX) ........................................... 54
Indicator lamp, front passenger
front air bag off ................................ 41
Infant and child restraint systems .... 51
ISOFIX (Child seat anchors –
LATCH-type) ..................................... 54
OCS (Occupant Classification
System) ........................................... 41
Override switch ................................ 55
Safety notes ..................................... 51
Tether anchorage points .................. 53
Top tether ........................................ 53
Child safety
see Children in the vehicle
Child seat anchors – LATCH-type
(ISOFIX)
see Children in the vehicle
Chrome-plated exhaust tip,
cleaning .............................................. 410
Cigarette lighter ................................ 353
Climate control system ....................338
Air conditioning ............................. 340
Air conditioning refrigerant ............ 493
Air distribution ............................... 342
Air recirculation mode ................... 343
Air volume ..................................... 342Automatic mode ............................
341
Deactivating system ......................340
Front defroster .............................. 343
Maximum cooling MAX COOL ........343
Residual heat and ventilation
.........344
Temperature .................................. 341
Cockpit ................................................. 27
Cold tire inflation pressure ..............393
Collapsible wheel chock ...................412
COMAND .............................................. 68
Address book ................................. 146
Audio playback .............................. 162
AUX sockets .................................. 172
Components .................................... 69
Controller ......................................... 71
FM/AM Radio ................................ 152
Gracenote ®
Media Database .........171
HD Radio™ .................................... 154
Inserting/ejecting CDs and DVDs . 165
Introduction ..................................... 68
iPod ®
............................................. 183
Media interface .............................. 183
Music Register ............................... 180
Navigation ........................................ 83
Operating ......................................... 72
Phone book .................................... 146
Reset to factory settings ..................82
Satellite radio ................................ 157
SD card .......................................... 166
Shortcut buttons .............................. 69
Switching on or off ........................... 68
System settings ............................... 79
Telephone ...................................... 135
Telephone keypad ............................ 70
Upload/Download of Data ............... 82
USB socket ...................................... 72
Vehicle settings ............................. 189
Video DVD ..................................... 174
Voice Control System .................... 217
Combination switch ..........................277
Controller (COMAND) ..........................71
Control system .................................. 201
Multifunction display .....................203
Multifunction steering wheel ......... 202
Control system menus ...................... 203
AMG ............................................... 208
Assistance ..................................... 2126
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COMAND automatic climate control
Introduction
i The components and operating principles
of COMAND can be found on ( Y page 68).G
Warning!
Follow the recommended settings for heating
and cooling given on the following pages and
pages in the “Controls in detail” chapter.
Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
You can operate the climate control via
COMAND or via the buttons on the climate
control panel (Y page 338).
Some of the special climate control functions
can only be operated via COMAND.
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)
The climate control menu is called up via the
climate control settings. Climate control settings with functions (submenus)
:
Temperature, driver’s side
; Air distribution, driver’s side
= Air volume, driver’s side
? Central menu, climate control
A Air volume, passenger side
B Air distribution, passenger side
C Temperature, passenger side Setting temperature
G
Observe Safety notes, see page 339.
Use the temperature controls w
(Y page 338) in the center console or
COMAND climate control settings to
separately adjust the air temperature on each
side of the passenger compartment.
X Select climate control settings Q
Temperature, left or right and then press
W. 194
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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
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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
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The red indicator lamp
F (USA only)
or ! (Canada only) in the instrument
cluster goes out.
After a cold start, the automatic transmission
shifts at a higher engine speed. This allows
the catalytic converter to reach its operating
temperature earlier.
For more
information on driving, see “Driving
instructions” ( Y page 397). Problems while driving
The engine

runs erratically and misfires R
An ignition cable may be damaged.
R The engine electronics may not be
operating properly.
R Unburned gasoline may have entered the
catalytic converter and damaged it.
X Give very little gas.
X Have the problem checked at an authorized
Mercedes-Benz Center

as soon as possible.
The coolant temperature is above
248‡ (120†) The coolant is too hot and is no longer cooling
the engine.
X
Stop the vehicle in a safe location as soon
as possible.
X Turn off the engine immediately.
X Allow the engine and coolant to cool off.
X Check the coolant level and add coolant if
necessary ( Y page 372).
In case of accident If the vehicle is leaking fuel:
X
Do not start the engine under any
circumstances.
X Exit the vehicle at a safe distance from the
roadway.
X Notify local fire and/or police authorities. If the extent of the damage cannot be
determined:
X
Contact an authorized Mercedes-Benz
Center or call Roadside Assistance.
If no damage on major assemblies, fuel
system, and engine mount can be
determined:
X Start the engine in the usual manner. Parking
G
Warning!
Do not park in areas where the hot exhaust
system could come into contact with
combustible materials. Combustible
materials such as grass, hay or leaves could
be ignited and cause a vehicle fire.
Unintended vehicle movement could cause
serious personal injury or damage to the
vehicle or the vehicle drivetrain. To reduce
such risks, always do the following before
turning off

the engine and leaving the vehicle:
R Keep right foot on the brake pedal.
R Engage the electronic parking brake.
R Shift the automatic transmission into park
position P.
R Slowly release the brake pedal.
R When parked on an incline, always turn the
front wheels towards the road curb.
R Turn the SmartKey in the starter switch to
position 0 and remove the SmartKey from
the starter switch, or press the KEYLESS-
GO start/stop button.
R Take the SmartKey with you and lock the
vehicle when leaving.
Electronic parking brake G
Warning!
When leaving the vehicle, always remove the
SmartKey from

the starter switch, take it with
you, and lock the vehicle. Do not leave 288
Driving and parking
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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
Climate control system
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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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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
343
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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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Coolant level
The engine coolant is a mixture of water and
anticorrosion/antifreeze.
When checking the coolant level, the vehicle
must be parked on level ground, and the
coolant temperature must be below 158‡
(70†). G
Warning!
In order to avoid any potentially serious burns:
R Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system, or
if the coolant temperature gauge indicates
that the coolant is overheated.
R Do not remove the cap on the coolant
expansion tank if the coolant temperature
is above 158‡ (70†). Allow the engine to
cool down before removing the cap. The
coolant expansion tank contains hot fluid
and is under pressure.
R Using a rag, slowly open the cap
approximately 1
/ 2 turn counterclockwise
to relieve excess pressure. If opened
immediately, scalding hot fluid and steam
will be blown out under pressure.
R Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. Example illustration: CL 550 4MATIC X
Using a rag, slowly open cap :
approximately 1
/ 2 turn counterclockwise
to relieve excess pressure.
X Continue turning cap : counterclockwise
and remove it.
The coolant level is correct if the level
R for cold coolant: reaches marking bar
= in coolant expansion tank ;
R for warm coolant: is approximately 0.6 in
(1.5 cm) higher
X Add coolant as required.
X Screw cap : back on and tighten it.
For more information on coolant, see the
“Technical data” section ( Y page 491) and
(Y page 494). Washer system and headlamp
cleaning system
G
Warning!
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may
ignite and burn. You could be seriously
burned.
! Always use washer solvent/antifreeze
where temperatures may fall below
freezing point. Failure to do so could result
in damage to the washer system/fluid
reservoir.
! Only use washer fluid which is suitable for
plastic lenses. Improper washer fluid can
damage the plastic lenses of the
headlamps.
! Do not use distilled or deionized water in
the washer fluid reservoir. Otherwise, the
washer fluid level sensor could be
damaged.
Fluid for the washer system and the headlamp
cleaning system is supplied from the washer
fluid reservoir. 372
Engine compartmentOperation
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