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 23).Overview of climate control systems
Important safety notes
G
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its
scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a blocked filter replaced at a Mercedes-
Benz Center as soon as possible. G
WARNING
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
Automatic climate control controls the
temperature and the humidity in the vehicle
interior and filters undesirable substances
from the air.
Automatic
climate control is only operational
when the engine is running. Optimum
operation is only achieved if you drive with the
side windows and sliding sunroof closed.
The climatic comfort deteriorates whilst the
sliding sunroof is open. The automatic climate
control cannot maintain the set temperature with the sliding sunroof open. You have to
adjust the climate control manually.
i
The "residual heat" function can only be
activated or deactivated with the ignition
switched off.
i The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 134).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature ( Y page 78).
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. 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.
Since the replacement interval depends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet. 118
Overview of climate control systems
Climate control
USA only
:
Sets the temperature, left ( Y page 131)
; Defrosts the windshield ( Y page 131)
= Switches maximum cooling MAX COOL on/off ( Y page 132)
? Activates/deactivates cooling with air dehumidification ( Y page 124)
A Switches the rear window defroster on/off( Y page 133)
B Sets the temperature, right ( Y page 131)
C Activates/deactivates air-recirculation mode (Y page 134)
D Sets the air distribution (Y page 131)
E Increases the airflow ( Y page 131)
F Reduces the airflow ( Y page 131)
G Display
H Switches climate control on/off ( Y page 121)
I Sets climate control to automatic (Y page 130) Information about using automatic
climate control
The following contains notes and
recommendations on optimum use of
automatic climate control.
R Activate
climate control using the à and
Á buttons. The indicator lamps in the
à and Á 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 in the á button goes out.120
Overview of climate control systems
Climate control
X
Turn the SmartKey to position 2 (Y page 139) in the ignition lock.
X Press the à button.
The indicator lamp in the à button lights up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^ button.
The indicator lamp in the ^ button goes out. The previously selected settings are
restored. USA only
:
Sets the temperature, left ( Y page 131)
; Defrosts the windshield ( Y page 131)
= Switches maximum cooling MAX COOL on/off ( Y page 132)
? Activates/deactivates cooling with air dehumidification ( Y page 124)
A Switches the rear window defroster on/off( Y page 133)
B Sets the temperature, right ( Y page 131)
C Activates/deactivates air-recirculation mode (Y page 134)
D Sets the air distribution (Y page 131)
E Increases the airflow ( Y page 131)
F Reduces the airflow ( Y page 131)
G Display
H Switches climate control on/off ( Y page 121)
I Sets climate control to automatic (Y page 130)122
Operating the climate control systemsClimate control
X
Turn the SmartKey to position 2 (Y page 139) in the ignition lock.
X Press the à button.
The indicator lamp in the à button lights up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^ button.
The indicator lamp in the ^ button goes out. The previously selected settings are
restored.
Switching off climate control Canada only
:
Sets the temperature, left ( Y page 131)
; Defrosts the windshield ( Y page 131)
= Switches the ZONE function on/off ( Y page 131)
? Activates/deactivates cooling with air dehumidification ( Y page 124)
A Switches the rear window defroster on/off( Y page 133)
B Sets the temperature, right ( Y page 131)
C Activates/deactivates air-recirculation mode (Y page 134)
D Sets the air distribution (Y page 131)
E Increases the airflow ( Y page 131)
F Reduces the airflow ( Y page 131)
G Display
H Switches climate control on/off ( Y page 121)
I Sets climate control to automatic (Y page 130)
X Press the ^ button.
The indicator lamp in the ^ button lights up. Operating the climate control systems
123Climate control Z
X
Turn the SmartKey to position
2 (Y page 139) in the ignition lock.
X To activate: press the ¬ button.
The indicator lamp in the ¬ button lights
up.
The climate control system switches to the
following functions:
R cooling with air dehumidification (only
with engine running)
R high airflow (depending on the outside
temperature)
R high temperature (depending on the
outside temperature)
R air distribution to the windshield and
front side windows
R air-recirculation mode off
X To deactivate: press the ¬ button.
The
indicator lamp in the ¬ button goes
out. The previously selected settings are
restored. The cooling with air
dehumidification function remains on. Air-
recirculation mode remains deactivated.
or
X Press the à button.
The
indicator lamp in the ¬ button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn controls : or B clockwise or
counter-clockwise ( Y page 119).
or
X Press the K or I button. Activating/deactivating MAX COOL
maximum cooling
The MAX COOL function is only available in
vehicles for the USA. MAX COOL is only operational when the
engine is running.
X
To activate: press the Ù button.
The indicator lamp in the button lights up.
X To activate: press off-road button Ù
again.
The
indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate
control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on Defrosting the windows
Windows fogged up on the inside X
Activate the Á cooling with air
dehumidification function.
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function
(Y page 131).
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X
Switch on the windshield wipers
(Y page 114).
X Press the _ button repeatedly until the
P or O symbol appears in the
display. 132
Operating the climate control systems
Climate control