Page 137 of 453
Problems with the windscreen wipers
Problem
Possible causes/consequences and
M
MSolutions The windscreen wipers
are jammed. Leaves or snow, for example, may be obstructing the windscreen
wiper movement. The wiper motor has been deactivated.
X For safety reasons, you should remove the key 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 windscreen wipers back on. The windscreen wipers
fail completely. The windscreen wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windscreen wipers checked at a qualified specialist work-
shop. 134
Windscreen wipersLights and windscreen wipers
Page 138 of 453

Useful information
i This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
i Read the information on qualified specialist
workshops: (Y page 28). Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise
mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R activate air-recirculation mode only briefly
R switch on "Cooling with air dehumidification"
R activate the windscreen demisting function
briefly, if required
Climate control regulates the temperature and
the humidity in the vehicle interior and filters
undesirable substances out of the air.
For vehicles with a combustion engine, the
"Cooling with air dehumidification" function is
only available when the engine is running. For
hybrid vehicles, the "Cooling with air dehumidi-
fication" function is also available via the elec-
tric refrigerant compressor when the engine is
not running. Optimum climate control is only
achieved with the side windows and roof closed.
The "Residual heat" function can only be activa-
ted or deactivated with the ignition switched off (Y page 146).
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 interior temperature will be reached
more quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants and odours. 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 Service Booklet. As this
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i Vehicles with AIR-BALANCE package:
in
addition to ionisation, the vehicle has an air
filter with anti-allergenic properties that con-
tribute to improved air filtration.
i Under certain environmental conditions, the
residual heat function may be activated auto-
matically an hour after the key has been
removed in order to dry the automatic climate control. The vehicle is then ventilated for 30
minutes. Overview of climate control systems
135Climate control
Page 139 of 453

Control panel for THERMATIC automatic climate control (2-zone)
Front control panel
: To set the temperature, left (Y page 141)
; To demist the windscreen (Y page 143)
= To switch the ZONE function on/off (Y page 143)
? To activate/deactivate cooling with air dehumidification (Y page 139)
To switch the residual heat on/off (Y page 146)
A To switch the rear window heating on/off (Y page 144)
B To set the temperature, right (Y page 141)
C To switch air-recirculation mode on/off (Y page 145)
D To set the air distribution (Y page 142)
E To increase the airflow (Y page 142)
F To reduce the airflow (Y page 142)
G To switch the climate control on/off (Y page 139)
H To set climate control to automatic mode (Y page 141)Rear control panel
: To control the rear-compartment climate control automatically
; To switch the rear climate control on/off
= To direct the airflow through the rear air vents
? To switch the seat heating on the right-hand side on/off 136
Overview of climate control systemsClimate control
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A
To direct the airflow through the footwell vents
B To switch the seat heating on the left-hand side on/off Information on using THERMATIC
automatic climate control
The following contains notes and recommenda-
tions on optimum use of THERMATIC automatic climate control.
R Activate climate control using the Ãand
Á buttons. The indicator lamps in the
à andÁ buttons light up.
R Set the temperature to 22 †.
R Only use the "Windscreen demisting" function
briefly until the windscreen is clear again.
R Only use air-recirculation mode briefly, e.g. if
there are unpleasant outside odours or when
in a tunnel. The windows could otherwise mist
up as no fresh air is drawn into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the temper-
ature settings on the driver's side for the
front-passenger side as well. The indicator
lamp above the ábutton goes out.
R If you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display. You will see the current set-
tings of the various climate control functions.
During automatic engine switch-off, the climate
control 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 163). Overview of climate control systems
137Climate control
Page 141 of 453

Control panel for THERMOTRONIC automatic climate control (3-zone)
Front control panel
: To set the temperature, left (Y page 141)
; To demist the windscreen (Y page 143)
= To switch the residual heat on/off (Y page 146)
? To activate/deactivate cooling with air dehumidification (Y page 139)
A To switch the rear window heating on/off (Y page 144)
B To set the temperature, right (Y page 141)
C To switch the ZONE function on/off (Y page 143)
D To switch the climate control on/off (Y page 139)
E To set the air distribution (Y page 142)
F To increase the airflow (Y page 142)
G To reduce the airflow (Y page 142)
H Display
I To set the climate mode (Y page 141)
J To switch air-recirculation mode on/off (Y page 145)
K To set climate control to automatic mode (Y page 141)
Rear control panel
L To increase the airflow (Y page 142)
M To set the temperature (Y page 141)
N To control the rear-compartment climate control automatically (Y page 141)
O To direct the airflow through the rear air vents (Y page 142)
P To switch the seat heating on the right-hand side on/off (Y page 112)
Q To direct the airflow through the footwell vents (Y page 142)
R To switch the rear climate control on/off (Y page 139)
S To reduce the airflow (Y page 142)
T To switch the seat heating on the left-hand side on/off (Y page 112)138
Overview of climate control systemsClimate control
Page 142 of 453

Information on using THERMOTRONIC
automatic climate control
The following contains instructions and recom-
mendations to enable you to get the most out of your THERMOTRONIC automatic climate con-
trol.
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 22 †.
R Only use the "Windscreen demisting" function
briefly until the windscreen is clear again.
R Only use air-recirculation mode briefly, e.g. if
there are unpleasant outside odours or when
in a tunnel. The windows could otherwise mist up as no fresh air is drawn into the vehicle inair-recirculation mode.
R Use the ZONE function to adopt the temper-
ature settings on the driver's side for the
front-passenger side and the rear compart-
ment as well. The indicator lamp above the
á button 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 If you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display. You will see the current set-
tings of the various climate control functions.
During automatic engine switch-off, the climate
control 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 163). Operating the climate control system
Switching the 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 mist up. Therefore, only
switch off climate control briefly.
i Switch on climate control primarily using
the à button (Y page 141).
In the rear-compartment, you can also switch
climate control on/off using the Ãand^
buttons.
Activating/deactivating X
Turn the key to position 2in the ignition lock
(Y page 158).
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to auto-
matic mode.
or X Press the ^button.
The indicator lamp in the ^button goes
out. The previous settings are reactivated.
X To deactivate: press the^button.
The indicator lamp in the ^button lights
up. Activating/deactivating cooling with
air dehumidification
General notes If you deactivate the "Cooling with air dehumid-
ification" function, the air inside the vehicle will
not be cooled. The air inside the vehicle will also
not be dehumidified. The windows can mist up
more quickly. Therefore, only deactivate the
"Cooling with air dehumidification" function
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 cooling mode is active. This is
normal and not a sign that there is a malfunc-
tion. Operating the climate control system
139Climate control
Page 143 of 453
Activating/deactivating
X
To activate: press the¿orÁ button.
The indicator lamp in the ¿orÁ button
lights up.
X To deactivate: press the¿orÁ but-
ton.
The indicator lamp in the ¿orÁ button
goes out. The cooling with air dehumidifica-
tion function has a delayed switch-off feature. 140
Operating the climate control systemClimate cont
rol
Page 144 of 453

Problems with the "Cooling with air dehumidification" function
Problem
Possible causes/consequences and
M
MSolutions The indicator lamp in the
¿ orÁ button
flashes three times or
remains off. The cooling
with air dehumidification
function cannot be acti-
vated. The cooling with air dehumidification function has been deactivated
due to a malfunction.
X Consult a qualified specialist workshop. Setting climate control to automatic
mode
General notes In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature of the dispensed air, the airflow and the air dis- tribution.
The "Cooling with air dehumidification" function
is activated automatically in automatic mode.
In the rear compartment, you can also switch
climate control for the rear seats to automatic
mode using the Ãbutton.
Automatic control X
Turn the key to position 2in the ignition lock
(Y page 158).
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow are
activated.
X To switch to manual mode: press the_
button.
or X Press the IorK button.
The indicator lamp in the Ãbutton goes
out.
THERMOTRONIC automatic climate control:
when automatic mode is activated, you can
select a climate mode (Y page 141). Setting the climate mode
In automatic mode you can select the following
climate modes:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUSE low airflow, slightly warmer and draught-free setting
X Turn the key to position 2in the ignition lock
(Y page 158).
X Press the Ãbutton.
X Press the ñbutton repeatedly until the
desired climate mode appears in the display. Setting the temperature
THERMATIC automatic climate control Different temperatures can be set for the driv-
er's and front-passenger sides.
X Turn the key to position 2in the ignition lock
(Y page 158).
X To increase or decrease: turn control:or
B anti-clockwise or clockwise (Y page 136).
Only change the temperature setting in small increments. Start at 22 †. Operating the climate control system
141Climate control