MERCEDES-BENZ CL-Class 2014 C217 Owner's Manual

Changing the windshiel
dwiper blades Moving the wiper blades to
avertical
position
Vehicles without KEYLESS-GO
X Turn the SmartKey to position 1or 2in the
ignitio nlock.
X Set the windshield wipers to
position °.
X When the wiper arms have reached a
vertical position, turn the SmartKey to
position 0and remove it from the ignition
lock.
Vehicles with KEYLESS-GO
X Switch off the engine.
X Remove your foot from the brake pedal.
X Set the windshield wipers to
position °.
X Press the Start/Stop button repeatedly
until the windshield wipers start.
X When the wiper arms have reached a
vertical position, press the Start/Stop
button.
Removing the wiper blades
X Fold the wiper arm away from the
windshield until it engages.
X Set the wiper blade at right angles to the
wiper arm. X
Remove the wiper blade from the retaining
pin on the wiper arm in the direction of the
arrow. Installing the wiper blades
X
Push the new wiper blade ontot he
retaining pin on the wiper arm in the
opposite direction to the arrow.
Make sure that the wiper blade slides fully
onto the retaining pin on the wiper arm.
X Turn the wiper blade parallel to the wiper
arm.
X Fold the wiper arm back onto the
windshield. Problems with the windshield wipers
The windshield wipers are obstructed Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
X
For safety reasons, you should remove the
SmartKey from the ignition lock.
or
X Switch off the engine using the Start/Stop
button and open the driver's door.
X Remove the cause of the obstruction.
X Switch the windshield wipers back on.
The windshield wipers are inoperative The windshield wiper drive is malfunctioning.
X
Select another wiper speed on the
combination switch.
X Have the windshield wipers checked at a
qualified specialist workshop.
The spray nozzles are misaligned The windshield washer fluid from the spray
nozzles no longer hits the center of the
windshield. The spray nozzles are misaligned.
X
Have the spray nozzles adjusted at a
qualified specialist workshop. Windshield wipers
259Lights and windshield wipers Z

260

Useful information
............................262
Overview of climate control sys-
tems ................................................... 262
Operating the climate control sys-
tems ................................................... 263
Setting the air vents .........................268 261Climate control

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 29).Overview of climate control systems
Important safety notes
G
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. Aclogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a blocked filter replaced at a Mercedes-
Ben zCenter as soon as possible. G
WARNING
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
Automatic climate control controls the
temperature and the humidity in the vehicle
interior and filters undesirable substances
from the air.
Automatic climate control is only operational
when the engine is running 13
.O ptimum
operation is only achieved if you drive with the
side windows and sliding sunroof closed.
You can also set some automatic climate
contro lfunction svia COMAND (Y page 239).i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature (Y page 89).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
i The integrated filter can filter out most
particles of dust, and completely filters out
pollen .Aclogged filter reduces the amount
of air supplied to the vehicle interior .For
this reason, you should always observe the
interval for replacing the filter, which is
specified in the Maintenance Booklet .As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance
Booklet.
i It is possible that the blower may be
activated automatically 40 minutes after
the SmartKey is removed. The vehicle is
then ventilated for 30 minutes to dry the
air-conditioning system.
13 The residual heat function can only be activated/deactivated if the ignition is switched off. 262
Overview of climate control systemsClimate control

Automatic climate control panel
:
Sets climate control to automatic mode, left (Y page 264)
; Sets the temperature, left (Y page 265)
= Sets the airflow, lef t(Ypage 265)
? Defrosts the windshield (Y page 265)
A Activates/deactivates air-recirculation mode (Y page 267)
B Switches climate control on /off(Y page 263)
C Switches the residual heat function on/off(Y page 267)
D Switches the rear window defroster on/off (Y page 266)
E Sets the airflow, right (Y page 265)
F Sets the temperature, right (Y page 265)
G Sets climate control to automatic mode, right (Y page 264)Notes on using climate control
Below, you can find a number of notes and
recommendations to help you use climate
control optimally.
R Activate climate control using the Ã
rocker switch. The indicator lamp in the
à rocker switch lights up.
R Set the temperature to 72 ‡ (22 † ).
R Only use the "defrosting" function briefly
until the windshield is clear again.
R Only use "air-recirculation" mode briefly,
e.g. if there are unpleasant outside odors
or when in a tunnel. The windows could
otherwise fog up as in air-recirculation
mode no fresh air is drawn into the vehicle.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The
"residual heat" function can only be activated or deactivated with the ignition
switched off. Operating the climate control
systems
Switching climate control on/off
Important information 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.
i Switch on climate control primarily using
the à rocker switch (Y page 264). Operating the climate control systems
263Climate control Z

Activating/deactivating
X
Turn the SmartKey to position 2in the
ignition lock.
X To activate: press the^rocker switch
up or down.
The indicator lamp in the rocke rswitch
goes out. The previously selected settings
come into effect again.
X To deactivate: press the^rocker
switch up or down.
The indicator lamp in the rocker switch
lights up. Activating/deactivating cooling with
air dehumidification
Important information The cooling with air dehumidificatio
nfunction
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected. G
WARNING
If you switch off the cooling function, the
vehicle will no tbe cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a
malfunction.
You can activate or deactivate the cooling
with air dehumidification function via
COMAND (Y page 241).
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer. Problems with the cooling with air
dehumidification function If you can no longer switch on the cooling with
air dehumidification function via COMAND,
the cooling with air dehumidification function
is switched off due to a malfunction.
X Consult a qualified specialist workshop. Setting climate control to automatic
G
WARNING
If you switch off the cooling function, 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.
In automatic mode, the set temperature is
maintained automatically at a constan tlevel.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
Automatic mode will achieve optimal
operation if cooling with air dehumidification
is also activated. If desired, cooling with air
dehumidification can be deactivated.
X Turn the SmartKey to position 2in the
ignition lock.
X Set the desired temperature.
X To switch on: press theÃrocker
switch up or down.
The indicator lamp in the Ãrocker
switch lights up.
X To deactivate: press theKrocker
switch up or down.
The indicator lamp in the Ãrocker
switch goes out.
or
X Set the air distribution using COMAND
(Y page 240).
The indicator lamp in the Ãrocker
switch goes out. 264
Operating the climate control systemsClimate control

Setting the temperature
Climate control climate zones
You can select different temperature settings
for the driver's and front-passenger sides as
well as for the footwells.
X Turn the SmartKey to position 2in the
ignition lock.
X To increase/reduce: press thew
rocker switch up or down.
Only change the temperature setting in
small increments. Start at 72 ‡ (22 † ).
i You can also use COMAND to set the
temperature (Y page 240).
i The footwell temperature can be set via
COMAND (Y page 242). Setting the air distribution
Air distribution settings The air distribution can be set individually for
the driver's and front-passenger sides.
¯ Directs air through the defroster vents
P Directs air through the center and side
air vents
O Directs the airflow through the
footwell air vents
S Directs air through the center, side and
footwell vents
a Directs air through the defroster and
footwell vents _
Directs air through the defroster,
center, side and footwell vents
b Directs air through the defroster,
center and side air vents
W Sets the air distribution to automatic
The air distribution can be set using COMAND
(Y page 240). Setting the airflow
You can select different airflow settings for
the driver's and front-passenger sides.
X Turn the SmartKey to position 2in the
ignition lock.
X To increase/reduce: press theK
rocker switch up or down.
You can also use COMAND to set the airflow
(Y page 241). Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
i You should only select the defrosting
function until the windshield is clear again.
X Turn the SmartKey to position 2in the
ignition lock.
X To switch on: press the¬rocker
switch up or down.
The indicator lamp in the ¬rocker
switch lights up.
The climate control system switches to the
following functions:
R cooling with air dehumidification on
R high airflow 14
R high temperature 14
R air distribution to the windshield and
front side windows
R air-recirculation mode off
14 Depending on the outside temperature. Operating the climate control systems
265Climate control Z

X
To deactivate: press the¬rocker
switch up or down.
The indicator lamp in the ¬rocker
switch goes out. The previously selected
settings come into effect again. The cooling
with ai rdehumidification function remains
on. Air-recirculation mode remains
deactivated.
or
X Press the wrocker switch up or down.
or
X Press the Krocker switch up or down. MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
MAX COOL is only operational when the
engine is running.
The MAX COOL function is activated
automatically:
R if climate control is set to automatic
(Ã) on both sides
R if additional cooling is used
The display shows MAX COOL .
This is the quickest way to cool the vehicle
interior when the sliding sunroof and the side
windows are closed. Defrosting the windows
Windows fogged up on the inside X
Activate the cooling with air
dehumidification function via COMAND
(Y page 241).
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function (Y page 265).
i You should only select this setting until
the windshield is clear again. Windows fogged up on the outside X
Switch on the windshield wipers.
X Activate automatic climate control.
i You should only select this setting until
the windshield is clear again. Rear window defroster
Activating/deactivating 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.
The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the window is clear. Otherwise, the
rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
X Turn the SmartKey to position 2in the
ignition lock.
X Press the ¤rocker switch up or down.
The indicator lamp in the ¤rocker
switch lights up or goes out.
Problems with the rear window
defroster The rear window defroster has deactivated
prematurely or cannot be activated.
X
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. 266
Operating the climate control systemsClimate control

Activating/deactivating air-
recirculation mode
You can deactivate the flo woffresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the
vehicle will then be recirculated. G
WARNING
Fogged windows impair visibility,
endangering you and others. If the windows
begi nto 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 the ¬
button.
X Turn the SmartKey to position 2in the
ignition lock.
X To activate: press thegrocker switch
up or down.
The indicator lamp in the grocker
switch lights up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. The indicator lamp in the
g rocker switch is not lit when
automatic air-recirculation mode is
activated.
Outside air is added after about
30 minutes.
X To deactivate: press thegrocker
switch up or down.
The indicator lamp in the grocker
switch goes out. i
Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡ (5 †) Activating/deactivating the residual
heat function
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X Turn the SmartKey to position 0in the
ignition lock or remove it.
X To activate: press theÌrocker switch
up or down.
The indicator lamp in the Ìrocker
switch lights up.
X To deactivate: press theÌrocker
switch up or down.
The indicator lamp in the Ìrocker
switch goes out.
i Residual heat is deactivated
automatically:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low Operating the climate control systems
267Climate control Z

Setting the air vents
Important safety notes
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
could 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.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air intake grille on the hood free
of blockages, such as ice, snow or leaves
R never cover the air vents or air intake grille
in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position. Setting the center air vents
:
Fixed center air vent
; Center air vent, right
= Center vent thumbwheel, right ?
Center vent thumbwheel, left
A Center air vent, left
X To open/close: turn thumbwheels =
and ?up or down. Setting the side air vents
X
To open/close: turn thumbwheel =up or
down.
i Side window defroster vent :is never
completely shut, even if side air vent ;is
shut. Setting the air vents in the stowage
compartment
When automatic climate control is activated
the stowage compartmen tcan be ventilated,
for instance to cool its contents. The level of
airflow depends on the airflow and air
distribution settings. The temperature of the
air is approximately the same as that of the
air flowing from the center air vents.
! Close the stowage compartmen tair vent
when heating mode is activated and
activate "cooling with air dehumidification"
if the outside temperature is high.
Otherwise, temperature-sensitive items
stored in the stowage compartmen tcould
be damaged. 268
Setting the air ventsClimate control