2013 MERCEDES-BENZ M-Class Owner's Manual

Installing the wiper blade
X
Place new wiper blade 0003onto wiper
arm 0002.
X Hold wiper arm 0002and press wiper
blade 0003in the opposite direction to the
arrow until it engages.
X Make sure that wiper blade 0003is seated
correctly.
X Positio nwiper blade 0003parallel to wiper
arm 0002.
X Fold wiper arm 0002back onto the rear
window. Windshield wipers
135Lights and windshield wipers Z

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
............................138
Overview of climate control sys-
tems ................................................... 138
Operating the climate control sys-
tems ................................................... 144
Setting the air vents .........................151 137Climate control

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 27).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 is only operational when the
engine is running. The system only works
optimally when the side windows and the roof
are closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 150).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature (Y page 93).
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 ventilated for 30 minutes. 138
Overview of climate control systemsClimate control

Control panel for dual-zone automatic climate control
USA only
Fron tcontrol panel
0002 To set the temperature, left (Y page 146)
0003 To defrost the windshield (Y page 148)
001F To switch maximum cooling on/off (Y page 148)
001E To switch cooling with air dehumidificatio non/off (Y page 145)
001C To switch the rea rwindow defroster on/off (Y page 149)
001D To set the temperature, right (Y page 146)
0011 To activate/deactivate air-recirculation mode (Y page 150)
0012 To set the air distribution (Y page 147)
0013 To increase the airflow (Y page 147)
0014 To reduce the airflow (Y page 147)
0015 To switch climate control on/off (Y page 144)
0016 To set climate control to automatic (Y page 145) Overview of climate control systems
139Climate control

Canada only
Fron tcontrol panel
0002 To set the temperature, left (Y page 146)
0003 To defrost the windshield (Y page 148)
001F To switch the ZONE function on/off (Y page 148)
001E To activate/deactivate cooling with air dehumidificatio n(Ypage 145) or activates/
deactivates the residual heatin gfunction ( Ypage 150)
001C To switch the rear window defroste ron/off (Y page 149)
001D To set the temperature, right (Y page 146)
0011 To activate/deactivate air-recirculation mode (Y page 150)
0012 To set the ai rdistribution (Y page 147)
0013 To increase the airflow (Y page 147)
0014 To reduce the airflow (Y page 147)
0015 To switch climate control on/off (Y page 144)
0016 To set climate control to automatic (Y page 145)Rear control panel
0002 To set rear-compartment climate control to automatic
0003 To switch rear-compartment climate control on/off 140
Overview of climate control systemsClimate control

001F
To direct the airflow through the rear air vents
001E To direct the airflow through the footwell vents Information about using dual-zone
automatic climate control
The following contains notes and
recommendations on optimum use of dual-
zone automatic climate control.
R Activate climate control using the 0006and
0007/0005 buttons. The indicator lamps in
the 0006 and0007/0005 buttons light up.
R Set the temperature to 72 ‡ (22 †).
R Only use the 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 0004button goes
out.
i 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 163). Overview of climate control systems
141Climate control

Control panel for 3-zone automatic climate control
USA only
Fron tcontrol panel
0002 To set the temperature, left (Y page 146)
0003 To defrost the windshield (Y page 148)
001F To switch maximum cooling on/off (Y page 148)
001E To switch cooling with air dehumidificatio non/off (Y page 145)
001C To switch the rea rwindow defroster on/off (Y page 149)
001D To set the temperature, right (Y page 146)
0011 To switch the ZONE function on/off (Y page 148)
0012 To switch climate control on/off (Y page 144)
0013 To set the air distribution (Y page 147)
0014 To increase the airflow (Y page 147)
0015 To reduce the airflow (Y page 147)
0016 Display
0017 To adjust the climate mode settings (Y page 146)
0018 To activate/deactivate air-recirculation mode (Y page 150)
0019 To set climate control to automatic (Y page 145)
Rear control panel
001A To increase the airflow (Y page 147)
001B To set the temperature (Y page 146)
0021 To set rear-compartment climate control to automatic (Y page 145)
0022 To direc tthe airflow through the rear air vents (Y page 147)
0023 To direct the airflow through the footwell vents (Y page 147)142
Overview of climate control systemsClimate control