2010 MERCEDES-BENZ CL CLASS heating

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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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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Cigarette lighter
G
Observe Safety notes, see page 51. G
Warning!
Never touch the heating element or sides of
the lighter; they are extremely hot. Hold the
knob only.
Make sure any children traveling with you do
not injure themselves or start a fire with the
hot cigarette lighter.
If the engine is off and the cigarette lighter is
being used extensively, the vehicle battery
may become discharged.
X Open the cover ( Y page 352). X
Switch on the ignition.
X Push in cigarette lighter :.
Cigarette lighter : will pop out
automatically when hot.
X Take out cigarette lighter :.
X Reinsert cigarette lighter : in its socket
after use. Power outlets
The power outlets can be used to
accommodate 12V DC electrical accessories
(e.g. auxiliary lamps, mobile phone chargers)
up to a maximum of 15 A (180 W).
If the engine is off and the power outlets are
being used extensively, the vehicle battery
may become discharged. X
Switch on the ignition.
Power outlet in glove box X
Open glove box ( Y page 348). Power outlet in trunk
Tele Aid
! In order to activate the Tele Aid system, a
subscriber agreement must be completed.
To ensure your system is activated and
operational, please press Information
button E to perform the acquaintance
call. Failure to complete either of these
steps may result in a system that is not
activated.
If you have any questions regarding
activation, please call the Customer
Assistance Center at
1-800-FOR-MERCedes (1-800-367-6372)
(USA only) or 1-888-923-8367 (Canada
only). Useful features
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obstacles. If there are any floormats or
carpets in the footwell, make sure that the
pedals still have sufficient clearance.
During sudden driving or braking maneuvers,
the objects could get caught between the
pedals. You could then no longer brake or
accelerate. This could lead to accidents and
injury.
Power assistance
G
Warning!
There is no power assistance for the steering
and the
brake when the engine is not running.
Steering and braking requires significantly
more effort and you could lose control of the
vehicle and cause an accident as a result.
Do not turn off the engine while the vehicle is
in motion. Brakes
Downhill grades !
When driving down long and steep
grades, relieve the load on the brakes by
shifting into a lower gear to use the
engine’s braking

power. This helps prevent
overheating of the brakes and reduces
wear.
When using the engine’s braking power, a
drive wheel may not spin for an extended
period of time, e.g. on slippery road
surfaces. This may cause serious damage
to the drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
Continuous or hard braking G
Warning!
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads. It can also result in the brakes overheating,
thereby significantly reducing their
effectiveness. It may not be possible to stop
the vehicle in sufficient time to avoid an
accident.
After hard braking, it is advisable to drive on
for some

time, rather than immediately park,
so that the air stream will cool down the
brakes faster.
Wet roads G
Warning!
After driving in heavy rain for some time
without applying

the brakes or through water
deep enough to wet brake components, the
first braking action may be somewhat
reduced and increased pedal pressure may be
necessary to obtain expected brake effect.
Maintain a safe distance from vehicles in
front.
To help prevent brake disk corrosion after
driving on wet or salt-covered roads, it is
advisable to brake the vehicle with
considerable force prior to parking. The heat
generated serves to dry the brakes.
Salt-covered roads G
Warning!
A layer of salt on the brake discs and the brake
linings may cause a delay in the braking
effect, resulting in a significantly increased
braking distance, which could lead to an
accident.
To avoid this danger, you should:
R occasionally brake carefully when you are
driving on salt-covered roads, so that any
layer of salt that may have built up on the
brake discs and the brake linings is 398
Driving instructions
Operation
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Display messages
Possible causes/consequences and
X Solutions÷ Currently
Unavailabl
e See
Oper.
Manual If the yellow ESC warning lamp
÷ flashes while driving and
this message appears, the Electronic Traction System (ETS/
4-ETS) has switched off to prevent overheating of the drive
wheel brakes.
The BAS PLUS and the PRE-SAFE ®
Brake are also not
available.
As soon as the brakes have cooled off, the Electronic Traction
System (ETS/4-ETS) switches on again.
The message in the multifunction display disappears and the
ESC warning lamp ÷ goes out.G Tele Aid
Inoperativ
e One or more main functions of the Tele Aid system are
malfunctioning.
X
Have the Tele Aid system checked at an authorized
Mercedes-Benz Center. 6 SRS
Malfunctio
n Service
Required There is a malfunction in the Supplemental Restraint System
(SRS). The air bags or Emergency Tensioning Devices (ETDs)
could deploy unexpectedly or fail to activate in an accident.
X
Drive with added caution to the nearest authorized
Mercedes-Benz Center. 6 Front
Left SRS
Malfunctio
n Service
Required Components of the driver’s supplemental restraint system
may not work properly.
X
Drive with added caution to the nearest authorized
Mercedes-Benz Center. 6 Front
Right SRS
Malfunctio
n Service
Required Components of the front passenger’s supplemental restraint
system may not work properly.
X
Drive with added caution to the nearest authorized
Mercedes-Benz Center. 6 Rear Left
SRS
Malfunctio
n Service
Required Components of the left rear passenger’s supplemental
restraint system may not work properly.
X
Drive with added caution to the nearest authorized
Mercedes-Benz Center. 6 Rear
Right SRS
Malfunctio
n Service
Required Components of the right rear passenger’s supplemental
restraint system may not work properly.
X
Drive with added caution to the nearest authorized
Mercedes-Benz Center. 436
Vehicle status messages in the multifunction display
Practical hints
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