2014 MERCEDES-BENZ GL-Class Owner's Manual

Problems with the windshield wipers
Problem Possible causes/consequences and
M
MSolutions The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield
wiper movement. The 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. Windshield wipers
143Lights and windshield wipers Z

144

Useful information
............................146
Overview of climate control sys-
tems ................................................... 146
Operating the climate control sys-
tems ................................................... 154
Setting the air vents .........................162 145Climate 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 28).Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could
otherwise fog up.
To prevent the 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 161).
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 interior temperature will be
reached more quickly. i
The integrated filter filters out most
particles of dust and soot and completely
filters out pollen. It also reduces gaseous
pollutants and odors. 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
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 residual heat
function may be activated automatically an
hour after the SmartKey has been removed
in order to dry the automatic climate
control. The vehicle is then ventilated for
30 minutes. 146
Overview of climate control systemsClimate control

Control panel for dual-zone automatic climate control
USA only
Front control panel
: To set the temperature, left (Y page 157)
; To defrost the windshield (Y page 159)
= To switch maximum cooling on/off (Y page 159)
? To switch cooling with air dehumidification on/off (Y page 155)
A To switch the rear window defroster on/off (Y page 160)
B To set the temperature, right (Y page 157)
C To activate/deactivate air-recirculation mode (Y page 161)
D To set the air distribution (Y page 158)
E To increase the airflow (Y page 158)
F To reduce the airflow (Y page 158)
G To switch climate control on/off (Y page 154)
H To set climate control to automatic (Y page 156) Overview of climate control systems
147Climate control

Canada only
Front control panel
: To set the temperature, left (Y page 157)
; To defrost the windshield (Y page 159)
= To switch the ZONE function on/off (Y page 159)
? To activate/deactivate cooling with air dehumidification (Y page 155) or activate/
deactivate the residual heating function ( Ypage 161)
A To switch the rear window defroster on/off (Y page 160)
B To set the temperature, right (Y page 157)
C To activate/deactivate air-recirculation mode (Y page 161)
D To set the air distribution (Y page 158)
E To increase the airflow (Y page 158)
F To reduce the airflow (Y page 158)
G To switch climate control on/off (Y page 154)
H To set climate control to automatic (Y page 156)Rear control panel
: To set rear-compartment climate control to automatic
; To switch rear-compartment climate control on/off 148
Overview of climate control systemsClimate control

=
To direct the airflow through the rear air vents
? To direct the airflow through the footwell vents Information about using 2-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 Ãand
¿/Á buttons. The indicator lamps in
the à and¿/Á 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 ábutton 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. Overview of climate control systems
149Climate control

Control panel for 3-zone automatic climate control
USA only
Front control panel
: To set the temperature, left (Y page 157)
; To defrost the windshield (Y page 159)
= To switch maximum cooling on/off (Y page 159)
? To switch cooling with air dehumidification on/off (Y page 155)
A To switch the rear window defroster on/off (Y page 160)
B To set the temperature, right (Y page 157)
C To switch the ZONE function on/off (Y page 159)
D To switch climate control on/off (Y page 154)
E To set the air distribution (Y page 158)
F To increase the airflow (Y page 158)
G To reduce the airflow (Y page 158)
H Display
I To adjust the climate mode settings (Y page 157)
J To activate/deactivate air-recirculation mode (Y page 161)
K To set climate control to automatic (Y page 156)
Rear control panel
L To increase the airflow (Y page 158)
M Setting the temperature (Y page 157)
N To set rear-compartment climate control to automatic (Y page 156)
O To direct the airflow through the rear air vents (Y page 158)
P To direct the airflow through the footwell vents (Y page 158)150
Overview of climate control systemsClimate control