2014 MERCEDES-BENZ C-CLASS ESTATE lock

Removing the wiper blades
X
Hold onto the wiper arm with one hand.
With the other hand, turn wiper blade in
direction of arrow :away from the wiper
arm as far as it will go.
X Slide catch ;in the direction of arrow =
until it engages in the removal position with
a noticeable click. X
Remove the wiper blade in the direction of
arrow ?away from the wiper arm.
Fitting the wiper blades X
Insert the new wiper blade into the wiper
arm in the direction of arrow :. X
Slide catch ;in the direction of arrow =
until it engages in the locking position with a noticeable click.
X Make sure that the wiper blade is seated
correctly.
X Fold the wiper arm back onto the wind-
screen. X
Remove protective film :of the service
indicator on the tip of the wiper blade.
If the colour of the service indicator changes
from black to yellow, the wiper blades should be replaced.
i The duration of the colour change varies
depending on the terms of use. 148
Windscreen wipersLights and windscreen wipers

Replacing the rear window wiper blades
Removing the wiper blades
X
Remove the key from the ignition lock.
X Fold wiper arm ?away from the rear win-
dow.
X Press both release clips ;.
X Fold wiper blade :in the direction of
arrow =away from wiper arm ?.
X Remove wiper blade :in the direction of
arrow A.
Fitting a wiper blade X
Position new wiper blade :with recess B
on lug A.
X Fold wiper blade :in the direction of
arrow =onto the wiper arm until retaining
clips ;engage in bracket ?.
X Make sure that wiper blade :is seated
correctly.
X Fold the wiper arm back onto the rear win-
dow. Windscreen wipers
149Lights and windscreen wipers Z

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
workshop. The windscreen washer
fluid from the spray
nozzles no longer hits
the centre of the wind-
screen. The spray nozzles are misaligned.
X Have the spray nozzles adjusted at a qualified specialist work-
shop. 150
Windscreen wipersLights and windscreen wipers

Activating/deactivating
X
Turn the key to position 2in the ignition
lock (Y page 185).
X To switch on: press thet/!
rocker switch up or down.
The Audio 20/COMAND Online climate
control menu opens.
X Activate the climate control using the air-
conditioning function bar; see the separate
Audio 20/COMAND Online operating
instructions.
or
X Set the airflow to level 1 or higher using the
H button.
X To switch off: press thet/!
rocker switch up or down.
The Audio 20/COMAND Online climate
control menu opens.
X Deactivate the climate control using the
air-conditioning function bar; see the sep-
arate Audio 20/COMAND Online operating instructions.
or
X Set the airflow to level 0 using the H
rocker switch. Activating/deactivating the cooling
with air dehumidification function
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi- cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can mist up more quickly. Therefore,
deactivate the "Cooling with air-dehumidifi-
cation" function only briefly.
For vehicles without hybrid drive, the "Cooling with air dehumidification" function is availa-
ble when the engine is running. For hybrid
vehicles, the "Cooling with air dehumidifica-
tion" function is also available via the electric refrigerant compressor when the engine is
not 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 mal-
function.
Activating/deactivating THERMATIC automatic climate control/
THERMOTRONIC automatic climate con-
trol without auxiliary heating
X To activate: press the¿rocker switch
up or down.
The indicator lamp above the rocker switch
lights up.
or X Activate the cooling with air dehumidifica-
tion function via Audio 20/COMAND
Online (see the separate operating instruc-
tions).
X To deactivate: press the¿rocker
switch up or down.
The indicator lamp above the rocker switch
goes out.
or X Deactivate the cooling with air dehumidifi-
cation function via Audio 20/COMAND
Online (see the separate operating instruc-
tions).
THERMOTRONIC automatic climate con-
trol with auxiliary heating
You can activate or deactivate the "Cooling
with air dehumidification" function using
Audio 20/COMAND Online (see the separate operating instructions). Operating the climate control system
161Climate control

Automatic control
X
Turn the key to position 2in the ignition
lock (Y page 185).
X Set the desired temperature using the
w rocker switch on the front control
unit.
or X Set the desired temperature using
Audio 20/COMAND Online, see the sepa-
rate operating instructions.
X To activate: press theÃrocker switch
up or down.
The indicator lamp above the Ãrocker
switch lights up.
X To switch to manual operation: press the
H rocker switch up or down.
or
X Set the airflow using Audio 20/COMAND
Online, see the separate operating instruc-
tions.
or
X Press the upper or lower section of the
_ rocker switch.
or X Set the air distribution using Audio 20/
COMAND Online, see the separate operat-
ing instructions.
The indicator lamp above the Ãrocker
switch goes out.
In automatic mode, if you adjust the airflow or air distribution manually, the indicator lamp
above the Ãrocker switch goes out. The
function which has not been changed man-
ually, however, continues to be controlled
automatically. When the manually set func-
tion switches back to automatic mode, the
indicator lamp above the Ãrocker switch
lights up again. Setting the climate mode
This function is only available with
THERMOTRONIC automatic climate control. In automatic mode you can select the follow-
ing airflow settings for the driver's and front-
passenger areas:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUS Elow airflow that is set slightly
warmer and with less of a draught
X To set: set the climate mode using Audio
20/COMAND Online (see separate operat-
ing instructions). Setting the temperature
THERMATIC automatic climate control THERMATIC automatic climate control (2-
zone): the temperature for the driver's and
front-passenger side can be set individually.
X Turn the key to position 2in the ignition
lock (Y page 185).
X To increase/reduce: press the upper or
lower section of the wrocker switch.
or X Set the temperature using Audio 20/
COMAND Online, see the separate operat-
ing instructions.
Only change the temperature setting in
small increments. Start at 22 †. Operating the climate control system
163Climate control

THERMOTRONIC automatic climate
control General notes
THERMOTRONIC 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.
Setting the temperature in the front com-
partment using the front control panel
X Turn the key to position 2in the ignition
lock (Y page 185).
X To increase/reduce: press the upper or
lower section of the wrocker switch.
or X Set the temperature using Audio 20/
COMAND Online, see the separate operat-
ing instructions.
Only change the temperature setting in
small increments. Start at 22 †.
Setting the temperature in the rear com-
partment using the front control panel X Turn the key to position 2in the ignition
lock (Y page 185).
X Set the temperature with the wrocker
switch on the front control panel.
or
X Set the temperature using Audio 20/
COMAND Online, see the separate operat-
ing instructions.
Only change the temperature setting in
small increments. Start at 22 †. X
Press the upper or lower section of
the ! rocker switch.
The climate control menu in Audio 20/
COMAND Online opens.
X Select the synchronisation function, see
separate Audio 20/COMAND Online oper-
ating instructions.
The temperature setting for the driver's
side is adopted for the front-passenger side
and the rear compartment.
Setting the temperature in the rear com-
partment using the rear control panel
X Turn the key to position 2in the ignition
lock (Y page 185).
X To increase/reduce: press the upper or
lower section of the wrocker switch on
the rear control panel (Y page 158).
Only change the temperature setting in
small increments. Start at 22 †.
The set temperature appears on the rear-
compartment display. Setting the air distribution
Air distribution settings ¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs the airflow through the centre
and side air vents as well as the foot-
well air vents
a Directs the airflow through the foot-
well and demister vents
_ Directs the airflow through the demis-
ter vents, the centre and side air vents
as well as the footwell air vents
b Directs the airflow through the centre
and side air vents as well as the demis-
ter vents
W Sets the air distribution to automatic 164
Operating the climate control systemClimate control

Setting
THERMOTRONIC automatic climate control:
you can set the air distribution separately for
the driver's and front-passenger side.
X Turn the key to position 2(Y page 185).
X Press the _button up or down.
The various air distribution settings appear in Audio 20/COMAND Online.
X Press and hold the _button upwards
until the desired position is reached.
or X Set the air distribution using Audio 20/
COMAND Online; see the separate operat-
ing instructions. Setting the airflow
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock (Y page 185).
X To increase/reduce: press the upper or
lower section of the Hrocker switch.
or
X Set the airflow using Audio 20/COMAND
Online, see the separate operating instruc-
tions.
THERMOTRONIC automatic climate
control Setting the front-compartment airflow
You can set the airflow separately for the
front and rear compartment.
X Turn the key to position 2in the ignition
lock (Y page 185).
X To increase/reduce: press the upper or
lower section of the Hrocker switch.
or
X Set the airflow using Audio 20/COMAND
Online; see the separate operating instruc-
tions. Setting the rear compartment airflow
X Turn the key to position 2in the ignition
lock (Y page 185).
X Press the upper or lower section of
the ! rocker switch.
The Audio 20/COMAND Online climate
control menu opens.
X Select the synchronisation function in the
climate control menu; see separate
Audio 20/COMAND Online operating
instructions.
The airflow setting for the front area is
adopted for the rear compartment.
Setting the rear compartment airflow
using the rear control panel
X Turn the key to position 2in the ignition
lock (Y page 185).
X To increase/reduce: press the upper or
lower section of the K/Irocker
switch on the rear control panel.
The selected airflow level is shown in the
rear-compartment display. Activating/deactivating the synchro-
nisation function
General notes The "Synchronisation" function is only avail-
able with THERMATIC automatic climate con-
trol (2-zone) and THERMOTRONIC automatic
climate control.
Climate control can be set centrally using the synchronisation function. The temperature
setting is adopted for the front-passenger
side. For THERMOTRONIC automatic climatecontrol, the temperature setting is adopted
for the front-passenger side and rear com-
partment. Operating the climate control system
165Climate control

Activating/deactivating
THERMATIC automatic climate control (2-
zone) without auxiliary heating
X Press the 0rocker switch up or down.
The indicator lamp in the 0rocker
switch lights up or goes out.
or X Activate/deactivate the synchronisation
function using Audio 20/COMAND Online
(see the separate operating instructions).
The synchronisation function deactivates if
the settings for the front-passenger side are
changed.
THERMATIC automatic climate control (2- zone) with auxiliary heating
X Activate/deactivate the synchronisation
function using Audio 20/COMAND Online
(see the separate operating instructions).
The synchronisation function deactivates if
the settings for the front-passenger side are
changed.
THERMOTRONIC automatic climate con-
trol
X Activate/deactivate the synchronisation
function using Audio 20/COMAND Online
(see the separate operating instructions).
The synchronisation function is deactivated: R if the settings for the front-passenger side
are changed
R if the settings for the rear compartment are
changed Demisting the windscreen
General notes You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the front side windows.
Switch off the windscreen demisting function
as soon as the windscreen is clear again. Activating/deactivating the wind-
screen demisting function X
Turn the key to position 2in the ignition
lock (Y page 185).
X To activate: press the¬rocker switch
on the front control unit up or down.
The indicator lamp above the ¬rocker
switch lights up. The current climate con-
trol settings are deactivated.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
i If necessary, the "Cooling with air dehu-
midification" function is activated. In this
case, the indicator lamp above the
¿ button remains switched off.
X To deactivate: press the¬rocker
switch up or down.
The indicator lamp above the ¬rocker
switch goes out. The previous settings are
reactivated. Air-recirculation mode
remains deactivated.
or
X Press the top or bottom section of the Ã
rocker switch. Demisting the windows
Windows misted up on the inside X
Activate the "Cooling with air dehumidifi-
cation" function with the ¿rocker
switch.
or
X Activate the cooling with air dehumidifica-
tion function via Audio 20/COMAND
Online; see the separate operating instruc-
tions.
For THERMOTRONIC automatic climate
control with auxiliary heating, the "Cooling 166
Operating the climate control systemClimate cont
rol