MERCEDES-BENZ CLS 2014 Owners Manual

Useful information............................130
Overview of climatecontrol sys-
tems...................................................130
Operating the climatecontrol sys-
tems...................................................135
Setting the air vents.........................142
129
Climat ec ontrol

Useful information
iThis 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 notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Overview of climatecontrol systems
Important safetynotes
Observethe settings recommendedonthe
following pages. The windows could
otherwise fog up.
To preventthe windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only
briefly
Rswitch on the cooling with air
dehumidification function
Rswitch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control can only be operated when
the engine is running. Optimum operation is
only achieved with the side windows and roof
closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Ypage 141).
iVentilate the vehicle forabrief period
during warm weather, e.g. using the
convenience opening feature (Ypage 89).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
iThe integrated filter filters out most
particles of dust and soot and completely
filters out pollen. It also reduces gaseous
pollutantsand odors.Aclogged filter
reduces the amountofair 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.Asitdepends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet.
130Overview of climatecontrol systems
Climat ec ontrol

Control panel for dual-zone automatic climatecontrol
Canadaonly
Setsthetemperature, left (Ypage 138)
Defroststhewindshield (Ypage 139)
$Switches theZONE function on/off(Ypage 139)
!Switches coolingwithair dehumidification on/off(Ypage 136)
Switches the rear window defroster on/off (Ypage 140)
%Setsthe temperature, right (Ypage 138)
Activates/deactivates air-recirculation mode (Ypage 141)
Setsthe air distribution (Ypage 138)
Increases the airflow (Ypage 139)
Reduces the airflow (Ypage 139)
Switches climatecontrolon/off (Ypage 135)
Setsclimate controltoautomatic (Ypage 137)
Overview of climatecontrol systems131
Climat ec ontrol

USA only
Sets the temperature, left (Ypage 138)
Defrosts the windshield(Ypage 139)
$Switches maximum cooling on/off (Ypage 139)
!Switches cooling with air dehumidification on/off (Ypage 136)
Switches the rear window defroster on/off (Ypage 140)
%Sets the temperature, right (Ypage 138)
Activates/deactivates air-recirculation mode (Ypage 141)
Sets the air distribution (Ypage 138)
Increases the airflow (Ypage 139)
Reduces the airflow (Ypage 139)
Switches climate control on/off (Ypage 135)
Sets climate control to automatic (Ypage 137)
Information about using dual-zone
automatic climate control
Automatic climate control
The following contains notes and
recommendations on optimum use of dual-
zone automatic climate control.
RActivate climate control using the\rand
buttons. The indicator lamps above
the\randbuttons light up.
RSet the temperature to 72‡(22 †).
ROnly use the "Windshield defrosting"
function briefly until the windshieldisclear
again.
ROnly use air-recirculation mode briefly,e.g.
if there are unpleasant outside odors or
when inatunnel. The windows could
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
RUse the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side as well.The
132Overview of climate control systems
Climat ec ontrol

indicator lamp above thebutton goes
out.
RVehicles with COMANDMultimedia-
System:if you change the settings of the
climate control system, the climate status
display appears for approximately three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions.You will
see the current settings of the various
climate control functions.
ECO start/stop function
During automatic engine switch-off, the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Ypage 152).
Overview of climate control systems133
Climate control

Control panel for 3-zone automatic climatecontrol
Canadaonly
Frontcontrol panel
Setsthetemperature, left (Ypage 138)
Defrosts thewindshield (Ypage 139)
$Switchestheresidual heat function on/off (Ypage 141)
!Switchescooling with air dehumidificationon/off (Ypage 136)
Switchesthe rearwindow defroster on/off (Ypage 140)
%Setsthe temperature, right (Ypage 138)
Switches the ZONE function on/off (Ypage 139)
Switches climate control on/off (Ypage 135)
Setsthe air distribution (Ypage 138)
Increases the airflow (Ypage 139)
Reduces the airflow (Ypage 139)
Adjusts the climate mode settings (Ypage 137)
Activates/deactivates air-recirculation mode (Ypage 141)
Setsclimate control to automatic (Ypage 137)
Rearcontrol panel
Increases the airflow (Ypage 139)
Reduces the airflow (Ypage 139)
Display
Reduces the temperature (Ypage 138)
#Increases the temperature (Ypage 138)
134Overview of climate control systems
Climate control

Information aboutusing 3-zone
automatic climate control
Automatic climate control
The 3-zone automatic climate control is only
available on vehicles for Canada.
The following contains instructions and
recommendations to enable you to get the
most out of your automatic climate control.
RActivate climate control using the\rand
buttons. The indicatorlamps above
the\randbuttons light up.
RIn automatic mode, you can also use the
buttontosetaclimate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM levelisrecommended.
RSet thetemperaturetof72‡(22 †).
ROnly use the"Windshield defrosting"
function briefly until thewindshield is clear
again.
ROnly use air-recirculation modebriefly, e.g.
if there are unpleasantoutside odorsor
when inatunnel. The windows could
otherwise fog up, since no fresh air is drawn
intothevehicleinair-recirculation mode.
RUse theZONEfunction to adopt the
temperature settingsonthedriver's side
for the front-passenger side and the rear
compartment as well. The indicatorlamp
above thebutton goes out.
RUse 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.
RVehicles with COMAND Multimedia-
System:if you change the settings of the
climate control system, the climate status
displayappears for approximately three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions. You will
see the current settings of the various
climate control functions.
ECO start/stop function
During automatic engine switch-off,the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Ypage 152).
Operating the climate control
systems
Switching climate control on/off
Points to observe before use
When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control only
briefly
iActivate climate control primarily using
the\rbutton (Ypage 137).
Activating/deactivating
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XTo switch on:press the\rbutton on
the control panel for the climate control.
The indicator lamp in the\rbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
XPress thebutton.
The indicator lamp in thebutton goes
out. The previously selected settings are
restored.
XTo switch off:press thebutton.
The indicator lamp in thebutton lights
up.
Operating the climate control systems135
Climat ec ontrol

Activating/deactivating cooling with
air dehumidification
Pointstoobserve beforeuse
If you deactivatethe"Cooling withair-
dehumidification"function,theair inside the
vehiclewill notbecooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
deactivatethe cooling with air-
dehumidification function only briefly.
The cooling with air dehumidification function
is only available when the engineisrunning.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and notasign that thereisa
malfunction.
Activating/deactivating
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
iWhen the "Cooling with air
dehumidification"function is activated,
one of the indicator lamps on the auxiliary
heating button will light up on vehicles with
auxiliary heating.
XTo deactivate:press thebutton.
The indicator lamp in thebutton goes
out. The "Cooling with air dehumidification"
function hasadelayed switch-off feature.
136Operating theclimatecontrol systems
Climat ec ontrol

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andSolutions
The indicator lamp in
thebutton
flashes three times or
remains off. The
"Cooling with air
dehumidification"
function cannot be
switched on.
Cooling with air dehumidification has been deactivated due to a
malfunction.
XVisitaqualified specialist workshop.
Setting climate control to automatic
Points to observe before use
In automatic mode, the set temperature is
maintained automatically ataconstant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If necessary, cooling
with air dehumidification can be deactivated.
If you deactivate the "Cooling with air-
dehumidification" function, the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
deactivate the cooling with air-
dehumidification function only briefly.
Activating/switching
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XSet the desired temperature.
XTo activate:press the\rbutton.
The indicator lamp in the\rbutton lights
up. Automatic air distribution and airflow
are activated.
i3-zone automatic climate control: when
automatic mode is activated, you can
selectaclimate mode (Ypage 137).
XTo switch to manualmode:press the
button.
or
XPress theorbutton.
The indicator lamp in the\rbutton goes
out.
Adjusting the climate mode settings
The "Set climate mode" function is only
available with 3-zone automatic climate
control.
You can select the following climate mode
settings in automatic mode:
FOCUS high airflow that is set slightly
cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly
warmer and with less draft
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XPress the\rbutton.
XPress thebutton repeatedly until the
desired climate mode appears in the
display.
Operating the climate control systems137
Climate control

Setting the temperature
Dual-zone automatic climate control
Differenttemperatures can be set for the
driver's and front-passenger sides.
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XTo increase/reduce:turn temperature
controlor%clockwise or counter-
clockwise (Ypage 131).
Only change the temperature settingin
small increments. Start at 72‡(22 †).
3-zone automatic climate control
Automatic climate control zones
You can select different temperature settings
for the driver's and front-passenger sides as
well as for the rear compartment.
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XTo increase/reduce the temperature in
the front compartment:turn temperature
controlor%clockwise or counter-
clockwise (Ypage 134).
Only change the temperature settingin
small increments. Start at 72‡(22 †).
XTo increase/reduce the temperature in
the rear compartment using the front
control panel:press thebutton.
The indicator lamp in thebutton goes
out.
XTurn temperature controlclockwise or
counter-clockwise (Ypage 134).
Only change the temperature settingin
small increments. Start at 72‡(22 †).
The temperature settingfor the driver's
side is adopted for the rear compartment
and the front-passenger side.
XTo increase/reduce the temperature in
the rear compartment using the rear
control panel:press theor
button on the rear control panel.
Only change the temperature settingin
small increments. Start at 72‡(22 †).
Setting the air distribution
Air distribution settings
Directsair through the center and side
air vents
Directsair through the footwell air
vents
Directsair through the center, side and
footwell vents

Directsair through the defroster vents
Directsthe airflow through the
defroster, center and side air vents
(Canada only)
Directsair through the defroster and
footwell vents
Directsthe airflow through the
defroster, center and side air vents, as
well as the footwell air vents(Canada
only)
iRegardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air ventscan only be
closed when the controls on the side air
ventsare turned downwards.
Setting the air distribution
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XPress thebutton repeatedly until the
desired symbol appears in the display.
138Operating the climate control systems
Climate control