
X
Firmly press release knob :and pull wiper
blade ;upwards from the wiper arm in the
direction of the arrow.
Fitting the wiper blades X
Position new wiper blade :in the retainer on
the wiper arm and slide it into place in the
direction of the arrow.
The wiper blade audibly engages.
X Make sure that the wiper blade sits correctly.
X Fold the wiper arm back onto the windscreen.
Replacing the wiper blades (MAGIC
VISION CONTROL) Moving the wiper blades to a vertical posi-
tion
On vehicles without KEYLESS-GO:
X Turn the key to position 0in the ignition lock
(Y page 158).
X Set the windscreen wipers to position °.
X Turn the key to position 1in the ignition lock
(Y page 158).
X As soon as the wiper arms are vertical to the
bonnet, turn the key to position 0in the igni-
tion lock (Y page 158). X
Remove the key.
X Fold the wiper arms away from the wind-
screen until you feel them snap into place.
On vehicles with KEYLESS-GO:
X Switch off the engine.
X Remove your foot from the brake pedal.
X Set the windscreen wipers to position °.
X Press the Start/Stop button repeatedly until
the windscreen wipers start.
X When the wiper arms have reached the verti-
cal position, press the Start/Stop button
repeatedly until the windscreen wipers stop.
X Fold the wiper arms away from the wind-
screen until you feel them snap into place.
Removing the wiper blades X
To bring the wiper blade into position to
be removed:
hold the wiper arm firmly with
one hand. With the other hand, turn the wiper blade in the direction of arrow :beyond the
point of resistance.
The wiper blade engages in the removal posi-
tion with an audible click.
X To remove a wiper blade: firmly press
release knob ;and pull the wiper blade
upwards =. 132
Windscreen wipersLights and windscreen wipers

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

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

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

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

ing sunroof):
press and hold the dbutton
until the side windows are closed.
The indicator lamp in the dbutton lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area during convenience closing, proceed as follows:
X Press the Wbutton to stop the side win-
dows.
The side windows stop.
X To then open the side windows, press the
W button again.
or X Press and hold the dbutton again for at
least two seconds.
The side windows move in the opposite direc-
tion.
X Only vehicles with sliding sunroof or pan-
orama sliding sunroof: press the2
switch to stop the sliding sunroof or pano-
rama sliding sunroof.
The sliding sunroof or panorama sliding sun-
roof stops.
X To then open the sliding sunroof or panorama
sliding sunroof, pull back on the 2switch.
i If the sliding sunroof is raised and closes,
press the 2switch, to stop the sliding
sunroof. Do not pull back on the 2switch
afterwards. The sliding sunroof closes before
it opens.
i Notes on the automatic reversing feature
for:
R the side windows (Y page 98)
R the panorama sliding sunroof
(Y page 102)
R the sliding sunroof (Y page 102)
X Convenience opening feature (vehicles
with sliding sunroof or panorama sliding
sunroof): press and hold the dbutton
until the side windows and the panorama slid- ing sunroof are open. The side windows and
the sliding sunroof or panorama sliding sun-
roof move back to their original position.
The indicator lamp in the dbutton goes
out. Air-recirculation mode is deactivated.
X Convenience opening feature (vehicles
without sliding sunroof or panorama slid-
ing sunroof): press and hold the dbutton
until the side windows are open. The side win-
dows move back to their original positions.
The indicator lamp in the dbutton goes
out. Air-recirculation mode is deactivated. i
If you open the side windows or the sliding
sunroof or the panorama sliding sunroof man-
ually after closing them with the convenience closing feature, they will remain in this posi-
tion when opened using the convenience
opening feature. Switching the residual heat on/off
General notes It is possible to make use of the residual heat of
the engine to continue heating the stationary
vehicle for up to 30 minutesafter the engine has been switched off. The heating time depends on
the set interior temperature.
Switching on/off X
To switch on: press theÌorÁ button.
The indicator lamp in the ÌorÁ button
lights up.
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 To switch off: press theÌorÁ but-
ton.
The indicator lamp in the ÌorÁ button
goes out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on Ionisation
Ionisation is used to purify and freshen the air in
the vehicle interior, which is conducive to a
pleasant climate.
The ionisation of the interior air is odourless and cannot, directly, be perceived in the vehicle inte-
rior.
You can switch ionisation on and off via the mul- timedia system (see the separate operating
instructions). 146
Operating the climate control systemClimate control

Ionisation can only be operated when the auto-
matic climate control is switched on. The side air vent on the driver's side must be open. Pre-entry climate control via key
General notes The "Pre-entry climate control via key" function
is only available n PLUG-IN HYBRID vehicles.
Before getting in, the vehicle interior can be
briefly warmed or ventilated in advance and the
air from the air vents can be pre-cooled.
The high-voltage battery must be sufficiently
charged before "Pre-entry climate control via
key" can be activated.
When the vehicle is pre-cooled, the following
functions are activated as needed:
R Automatic climate control
R Blower
R Seat ventilation
When the vehicle is pre-heated, the following
functions are activated as needed:
R Automatic climate control
R Blower
R Seat heating
If you have activated ionisation via the multime- dia system, it is activated together with pre-
entry climate control.
Switch on ionisation (see the separate operating instructions).
Activating/deactivating "Pre-entry cli-
mate control via key" Before "Pre-entry climate control via key" can be
activated, you must activate the function using
the on-board computer.
X To activate "Pre-entry climate control via
key": unlock the vehicle with the key or KEY-
LESS-GO.
The climate control functions are activated for
up to 5 minutes for pre-heating and pre-cooling.
To deactivate "Pre-entry climate control via
key": "Pre-entry climate control via key" deac-
tivates automatically when the engine is started. The following functions remain active after the
engine is started:
R Seat heating (heating)
R Seat ventilation (ventilation)
R Ionisation
An activated "Pre-entry climate control via key" function can be deactivated via the button
(Y page 149). Operating the climate control system
147Climate control Z

Problems with "Pre-entry climate control via key"
Problem
Possible causes/consequences and
M
MSolutions "Pre-entry climate con-
trol via key" cannot be
activated or has been
deactivated. The charge status of the high-voltage battery is under the specified
minimum charge status.
X Start the engine when the vehicle is at a standstill.
The internal combustion engine drives the electric motor. The elec-
tric motor is operating as an alternator. The high-voltage battery is
charging.
Further information on charging the high-voltage battery via: R a mains socket (Y page 185)
R a charging station (Y page 189)
R a wallbox (Y page 188) "Pre-entry climate control via key" has been started more than twice
with the engine switched off.
X Switch on the engine and let it run for more than ten seconds.
X Try again to activate "Pre-entry climate control via key". Pre-entry climate control at time of
departure
Important safety notes G
WARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle.
General notes The "Pre-entry climate control at departure
time" function is only available in PLUG-IN
HYBRID vehicles.
You can use the "Pre-entry climate control at
departure time" function to cool or heat the
vehicle interior if the engine is not running.
The "Pre-entry climate control at departure
time" function can be activated regardless of
whether or not the vehicle is connected to an
electric power supply. However, the charge sta- tus of the high-voltage battery must be higher
than the specified minimum charge status.
When the vehicle is connected to an electric
power supply, priority is given to charging the
high-voltage battery to the specified minimum charge. "Pre-entry climate control at departure
time" is only activated subsequently.
The running time of the "Pre-entry climate con-
trol at departure time" function may be reduced if:
R the vehicle is not connected to an electric
power supply and
R the high-voltage battery is not fully charged
With active "Pre-entry climate control at depar-
ture time" the charge status of the high-voltage
battery can be reduced, even if the charge cable
connector is connected.
When the vehicle is cooled, the following func-
tions are activated as needed:
R Automatic climate control
R Blower
R Seat ventilation
When the vehicle is heated, the following func-
tions are activated as needed:
R Automatic climate control
R Blower
R Seat heating
If you have activated ionisation via the multime- dia system, it is activated together with "Pre-
entry climate control".
Switch on ionisation (see the separate operating instructions). 148
Operating the climate control systemClimate control