2014 MERCEDES-BENZ M-Class page 6

Changing the rea
rbulbs
Opening and closing the service flap Left-hand service flap
Right-hand service flap
You must open the service flap in the cargo
compartment before you can change the
bulbs in the brake lamp.
X
To open: release service flap 0002at the top,
e.g. with a screwdriver, and swing it
downward in the direction of the arrow.
X Right side: remove the first-aid kit
beforehand and pull the parce lnet down.
X To close: reinsertservice flap 0002. Brake lamp X
Switch off the lights.
X Open the cargo compartment.
X Open the service flap (Y page 132).
X Turn bulb holder 0002counter-clockwise and
remove it.
X Take bulb out of bulb holder 0002.
X Inser tthe new bulb into bulb holder 0002.
X Insert bulb holder 0002into the lamp and turn
it clockwise.
X Close the service flap (Y page 132). Windshield wipers
Switching the windshield wipers on/
off
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can
scratch the glass if wiping takes place when
the windshield is dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always
use washer fluid when operating the
windshield wipers.
! If the windshield wipers leave smears on
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Cleant he windshield using washer fluid
after washing the vehicle in an automatic
car wash. 132
Windshield wipersLights and windshield wipers

!
Intermittent wiping with rain sensor: due
to optical influences and the windshield
becoming dirty in dry weather conditions,
the windshield wipers may be activated
inadvertently. This could then damage the
windshield wiper blades or scratch the
windshield.
For this reason, you should always switch
off the windshield wipers in dry weather. Combination switch
0005
0008 Windshield wiper off
0006 0001 Intermittent wipe, low (rain sensor
set to low sensitivity)
0007 0002 Intermittent wipe, high (rain sensor
set to high sensitivity)
000C 0018 Continuous wipe, slow
000D 0012 Continuous wipe, fast
0021 0007 Single wipe
0014 0008 To wipe with washer fluid
X Switch on the ignition.
X Turn the combination switch to the
corresponding position.
In the 0001or0002 position, the appropriate
wiping frequency is set automatically
according to the intensity of the rain. In
the 0002 position, the rain sensor is more
sensitive than in the 0001position, causing
the windshield wipers to wipe more
frequently.
If the wiper blades are worn, the windshield
will no longer be wiped properly.T his could
prevent you from observing the traffic
conditions. Replace the wiper blades twice a
year, ideally in spring and fall. Switching the rear window wiper on/
off
Combination switch
0002
0001 Rear window wiper switch
0006 0005 To wipe with washer fluid
0007 ITo switch on intermittent wiping
000C 0To switch off intermittent wiping
000D 000E To wipe with washer fluid
X Turn the SmartKey to position 1or 2in the
ignition lock (Y page 157).
X Turn switch 0002on the combination switch
to the corresponding position.
When the rear window wiper is switched on,
the icon appears in the instrumentc luster. Replacing the wiper blades
Important safety notes G
WARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could
be trapped by the wiper arm. There is a risk
of injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
! Neve ropen the hood/tailgate if a wiper
arm has been folded away from the
windshield/rear window.
Never fold a windshield wiper arm without
a wiper blade back onto the windshield/
rear window. Windshield wipers
133Lights and windshield wipers Z

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

Control panel for dual-zone automatic climate control
USA only
Fron tcontrol panel
0002 To set the temperature, left (Y page 147)
0003 To defrost the windshield (Y page 149)
0023 To switch maximum cooling on/off (Y page 149)
0022 To switch cooling with air dehumidificatio non/off (Y page 145)
0020 To switch the rea rwindow defroster on/off (Y page 150)
0021 To set the temperature, right (Y page 147)
0014 To activate/deactivate air-recirculation mode (Y page 151)
0015 To set the air distribution (Y page 148)
0016 To increase the airflow (Y page 148)
0017 To reduce the airflow (Y page 148)
0018 To switch climate control on/off (Y page 144)
001A To set climate control to automatic (Y page 146) Overview of climate control systems
139Climate control

Canada only
Fron tcontrol panel
0002 To set the temperature, left (Y page 147)
0003 To defrost the windshield (Y page 149)
0023 To switch the ZONE function on/off (Y page 149)
0022 To activate/deactivate cooling with air dehumidificatio n(Ypage 145) or activate/
deactivate the residual heatin gfunction ( Ypage 151)
0020 To switch the rear window defroste ron/off (Y page 150)
0021 To set the temperature, right (Y page 147)
0014 To activate/deactivate air-recirculation mode (Y page 151)
0015 To set the ai rdistribution (Y page 148)
0016 To increase the airflow (Y page 148)
0017 To reduce the airflow (Y page 148)
0018 To switch climate control on/off (Y page 144)
001A To set climate control to automatic (Y page 146)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

0023
To direct the airflow through the rear air vents
0022 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 "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 as well. The
indicator lamp above the 0004button goes
out.
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 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 147)
0003 To defrost the windshield (Y page 149)
0023 To switch maximum cooling on/off (Y page 149)
0022 To switch cooling with air dehumidificatio non/off (Y page 145)
0020 To switch the rea rwindow defroster on/off (Y page 150)
0021 To set the temperature, right (Y page 147)
0014 To switch the ZONE function on/off (Y page 149)
0015 To switch climate control on/off (Y page 144)
0016 To set the air distribution (Y page 148)
0017 To increase the airflow (Y page 148)
0018 To reduce the airflow (Y page 148)
001A Display
001B To adjust the climate mode settings (Y page 147)
001C To activate/deactivate air-recirculation mode (Y page 151)
001D To set climate control to automatic (Y page 146)
Rear control panel
001E To increase the airflow (Y page 148)
001F To set the temperature (Y page 147)
0024 To set rear-compartment climate control to automatic (Y page 146)
0025 To direc tthe airflow through the rear air vents (Y page 148)
0026 To direct the airflow through the footwell vents (Y page 148)142
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)Canada only
Front control panel
0002 To set the temperature, left (Y page 147)
0003 To defrost the windshield (Y page 149)
0023 To switch the residual heat function on/of f(Ypage 151)
0022 To switch cooling with air dehumidification on/off (Y page 145)
0020 To switch the rear window defroster on/off (Y page 150)
0021 To set the temperature, right (Y page 147)
0014 To switch the ZONE function on/off (Y page 149)
0015 To switch climate control on/off (Y page 144)
0016 To set the air distribution (Y page 148)
0017 To increase the airflow (Y page 148)
0018 To reduce the airflow (Y page 148)
001A Display
001B To adjust the climate mode settings (Y page 147)
001C To activate/deactivate air-recirculation mode (Y page 151)
001D To set climate control to automatic (Y page 146)
Rear control panel
001E To increase the airflow (Y page 148)
001F To set the temperature (Y page 147)
0024 To set rear-compartment climate control to automatic (Y page 146)
0025 To direct the airflow through the rear air vents (Y page 148)
0026 To direct the airflow through the footwell vents (Y page 148) Overview of climate control systems
143Climate control