2014 MERCEDES-BENZ M-Class ignition

Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the wiper arm withou
tawiper blade and it
falls onto the windshield/rear window, the
windshield/rear window may be damaged
by the force of the impact.
Mercedes-Ben zrecommends that you have
the wiper blades changed at aqualified
specialist workshop.
! To avoid damaging the wiper blades,
make sure that you touch only the wiper
arm of the wiper.
Changing the windshield wiper blades Removing the wiper blades
X
Remove the SmartKey from the ignition
lock.
X Fold the wiper arm away from the
windshield. X
Firmly press release knob 0002and pull wiper
blade 0003upwards from the wiper arm in the
direction of the arrow. Installing the wiper blades X
Position new wiper blade 0002in 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 is seated
correctly.
X Fold the wiper arm back onto the
windshield.
Replacing the rea rwindow wiper blade Removing
awiper blade X
Remove the SmartKey from the ignition
lock.
X Fold wiper arm 0002away from the rear
window until it engages.
X Position wiper blade 0003at a right angle to
wiper arm 0002.
X Hold wiper arm 0002and press wiper
blade 0003in the direction of the arrow until
it releases.
X Remove wiper blade 0003.134
Windshield wipersLights and windshield wipers

Problems with the windshield wipers
Problem Possible causes/consequences and
0001 Solutions
The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield
wiper movement.T
he wiper motor has been deactivated.
X For safety reasons, you should remove the SmartKey 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 windshield wipers back on. The windshield wipers
fail completely. The windshield wiper drive is malfunctioning.
X
Select another wiper speed on the combination switch.
X Have the windshield wipers checked at a qualified specialist
workshop. 136
Windshield wipersLights and windshield wipers

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 28).Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could
otherwise fog up.
To preven tthe 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 151).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature (Y page 95).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly. i
The integrated filter can filter out most
particles of dust, and completely filters out
pollen. Aclogged 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 dehumidification
function of the climate control system may
be activated automatically an hour after the
SmartKey has been removed. The vehicle
is then ventilated for 30 minutes. 138
Overview of climate control systemsClimate control

0027
To switch rear-compartment climate control on/off (Y page 144)
0028 To reduce the airflow (Y page 148)Information about using 3-zone
automatic climate control
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 0006and
0007 buttons. The indicator lamps above
the 0006 and0007 buttons light up.
R In automatic mode, you can also use the
000C 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 0004button 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. During automatic engine switch-off, the
climate control 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 163). 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
Switch on climate control primarily using
the 0006 button (Y page 146).
In the rear compartment, you can also switch
climate control on and off using the 0006and
000C buttons.
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To activate: press the0006button.
The indicator lamp in the 0006button lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the 000Cbutton.
The indicator lamp in the 000Cbutton goes
out. The previously selected settings are
restored.
X To deactivate: press the000Cbutton.
The indicator lamp in the 000Cbutton lights
up. 144
Operating the climate control systemsClimate control

Problems with the "Cooling with air dehumidification" function
Problem Possible causes/consequences and
0001 Solutions
The indicator lamp in
the
0007/0005 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 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,
only deactivate the "Cooling with air-
dehumidification" function briefly.
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.
Automatic mode will achieve optimal
operation if cooling with air dehumidification
is also activated. If necessary, cooling with air
dehumidification can be deactivated.
In the rear compartment, you can also switch
climate control for the rear seats to automatic
mode using the
0006button. Activating/switching X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X Set the desired temperature.
X To activate: press the0006button.
The indicator lamp in the 0006button lights
up. Automatic air distribution and airflow
are activated.
X To switch to manual mode: press the
0017 button.
or
X Press the 0018or0019 button.
The indicator lamp in the 0006button goes
out.
3-zone automatic climate control: when
automatic mode is activated, you can select
a climate mode (Y page 147).146
Operating the climate control systemsClimate control

Adjusting the climate mode settings
You can select the followin gclimate mode
settings in automatic mode:
FOCU Shigh airflow that is set slightly
cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X Press the 0006button.
X Press the 000Cbutton repeatedly until the
desired climate mode appears in the
display. Setting the temperature
Dual-zone automatic climate control Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To increase/reduce: turn control0002or
0021 clockwise or counter-clockwise
(Y page 139).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †). 3-zone automatic climate control
Automatic climate control zones
You can selec
tdifferen ttemperature settings
for the driver's and front-passenger sides as
well as for the rear compartment.
X Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To increase/reduce the temperature in
the front: turn control 0002or0021 clockwise
or counter-clockwise (Y page 142).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
X To increase/reduce the temperature in
the rear compartment using the front
control panel: press the0004button.
The indicator lamp in the 0004button goes
out.
X Turn control 0002clockwise or counter-
clockwise (Y page 142).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
The temperature setting for the driver's
side is adopted for the rear compartment
and the front-passenger side.
X To increase/decrease the rear
compartment temperature using the
rear control panel: turn control001F
clockwise or counter-clockwise on the rear
control panel (Y page 142).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †). Operating the climate control systems
147Climate control

Setting the air distribution
Air distribution settings Front control panel
001C
Directs the airflow through the center
vents
001B Directs air through the footwell air
vents
001D Directs the airflow through the center
and footwell vents
0008 Directs air through the defroster vents
0015 Directs the airflow through the
defroster and center vents (Canada
only)
0014 Directs air through the defroster and
footwell vents
0017 Directs the airflow through the
defroster, center and footwell air vents
(Canada only)
Rear control panel
001A Directs the airflow through the rear
center and rear side air vents
001B Directs air through the footwell air
vents
i Using the rear control panel, you can also
activate both air distribution positions
simultaneously .Inorder to do this, press
both air distributio nbuttons. The air is then
routed through all rear air vents.
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents .The side air vents can only be
closed when the controls on the side air
vents are turned downwards. Adjusting X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X Press the 0017button repeatedly until the
desired symbol appears in the display. Setting the airflow
X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To increase: press the0019button.
X To reduce: press the0018button.
i You can use 3-zone automatic climate
control to set the airflow in the rear
compartments eparately.148
Operating the climate control systemsClimate control

Switching the ZONE function on/off
X
To activate: press the0004button.
The indicator lamp above the 0004button
lights up.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side
and the rear compartment.
X To deactivate: press the0004button.
The indicator lamp above the 0004button
goes out.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side and
the rear compartment. Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "Windshield defrosting"
function as soon as the windshield is clear
again. X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To activate: press the0009button.
The indicator lamp in the 0009button lights
up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windshield and
front side windows
R air-recirculation mode off
X To deactivate: press the0009button.
The indicator lamp in the 0009button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
X Press the 0006button.
The indicator lamp in the 0009button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn controls 0002or0021 clockwise or
counter-clockwise:
Dual-zone automatic climate control
(Y page 139)
3-zone automatic climate control
(Y page 142)
or
X Press the 0019or0018 button. MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA. Operating the climate control systems
149Climate control