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Useful information
............................144
Overview of climate control sys-
tems ................................................... 144
Operating the climate control sys-
tems ................................................... 148
Setting the air vents .........................155 143Climate control
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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 Read the information on qualified
specialist workshops: (Y page 26).Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could
otherwise fog up.
To prevent the windows from fogging up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air
dehumidification function
R switch 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 (Y page 154).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature (Y page 99).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly. i
The integrated filter filters out most
particles of dust and soot and completely
filters out pollen. It also reduces gaseous
pollutants and odors. A clogged 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 residual heat
function may be activated automatically an
hour after the SmartKey is removed. The
vehicle is then ventilated for 30 minutes to
dry the automatic climate control. 144
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Control panel for dual-zone automatic climate control
Canada only
:
Activates/deactivates air-recirculation mode (Y page 154)
; Defrosts the windshield (Y page 152)
= Switches the ZONE function on/off (Y page 152)
? Display
A Sets climate control to automatic (Y page 150)
B Switches cooling with air dehumidification on/off ( Ypage 149)
C Switches the rear window defroster on/off (Y page 153)
D Switches climate control on/off (Y page 148)
E Sets the temperature, right (Y page 151)
F Sets the air distribution (Y page 151)
G Sets the airflow (Y page 152)
H Sets the temperature, left (Y page 151)USA only
:
Sets climate control to automatic (Y page 150)
; Defrosts the windshield (Y page 152)
= Switches the ZONE function on/off (Y page 152)
? Activates/deactivates air-recirculation mode (Y page 154)
A Switches maximum cooling on/off (Y page 153)
B Switches cooling with air dehumidification on/off ( Ypage 149) Overview of climate control systems
145Climate control
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C
Switches the rear window defroster on/off (Y page 153)
D Switches climate control on/off ( Ypage 148)
E Sets the temperature, right ( Ypage 151)
F Sets the air distribution (Y page 151)
G Sets the airflow (Y page 152)
H Sets the temperature, left ( Ypage 151)
I Display 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.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps above
the à and¿ buttons light up.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield 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, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side as well. The
indicator lamp above the ábutton goes
out.
R Vehicles with COMAND: 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 164). 146
Overvie
w of climate cont rol systemsClimate control
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Control panel for 3-zone automatic climate control
Canada only
Front control panel
: To set climate control to automatic (Y page 150)
; To defrost the windshield (Y page 152)
= To switch the ZONE function on/off (Y page 152)
? Display
A To activate/deactivate air-recirculation mode (Y page 154)
B To switch the residual heat function on/off (Y page 154)
C To switch cooling with air dehumidification on/off (Y page 149)
D To switch the rear window defroster on/off (Y page 153)
E To switch climate control on/off (Y page 148)
F To set the temperature, right (Y page 151)
G To adjust the climate mode settings (Y page 150)
H To set the airflow ( Ypage 152)
I To set the air distribution (Y page 151)
J To set the temperature, left (Y page 151)
Rear control panel
K To increase the temperature (Y page 151)
L Display
M To increase the airflow (Y page 152) Overview of climate control systems
147Climate control
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N
To reduce the airflow (Y page 152)
O To reduce the temperature (Y page 151)Information about using 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.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps above
the à and¿ buttons light up.
R In automatic mode, you can also use the
ñ button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield 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, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side and the rear
compartment as well. The indicator lamp
above the ábutton goes out.
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.
R Vehicles with COMAND: 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 (Y page 164). Operating the climate control
systems
Switching climate control on/off
General notes 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
i
Activate climate control primarily using
the à button (Y page 150). 148
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Activating/deactivating
X
Turn the SmartKey to position 2in the
ignition lock (Y page 159).
X To switch on: press theÃbutton on
the control panel for the climate control.
The indicator lamp above the Ãbutton
lights up. Airflow and air distribution are set
to automatic mode.
or
X Press the ^button.
The indicator lamp above the ^button
goes out. The previously selected settings
are restored.
X To switch off: press the^button.
The indicator lamp above the ^button
lights up. Activating/deactivating cooling with
air dehumidification
General notes 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.
The "Cooling with air dehumidification"
function is only available when the engine is
running. 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 not a sign that there is a
malfunction. Activating/deactivating X
To activate: press the¿button.
The indicator lamp above the ¿button
lights up.
i When 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.
X To deactivate: press the¿button.
The indicator lamp above the ¿button
goes out. The "Cooling with air
dehumidification" function has a delayed
switch-off feature. Operating the climate control systems
149Climate control
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Problems with the "Cooling with air dehumidification" function
Problem Possible causes/consequences and
M
MSolutions 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.
X
Visit a qualified specialist workshop. Setting climate control to automatic
General notes In automatic mode, the set temperature is
maintained automatically at a constant 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 X
Turn the SmartKey to position 2in the
ignition lock (Y page 159).
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp above the Ãbutton
lights up. Automatic air distribution and
airflow are activated.
i 3-zone automatic climate control: when
automatic mode is activated, you can
select a climate mode (Y page 150).
X To switch to manual mode: Dual-zone automatic climate control: press
air distribution adjustment button
F(Y
page 145).
3-zone automatic climate control: press air
distribution adjustment button
I(Y page 147).
The indicator lamp above the Ãbutton
goes out.
or
X Dual-zone automatic climate control: press
airflow adjustment button G(Ypage 145).
3-zone automatic climate control: press
airflow adjustment button H(Ypage 147).
The indicator lamp above the Ãbutton
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 150
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