Page 177 of 401

Air conditioning
174
The symbols for the air distribution have the
following meanings: Symbol Meaning
Z
Directs the airflow through the
centre, the side and the demis-
ter air vents
a
Directs the airflow through the
centre and side air vents
X
Directs the airflow to the entire
vehicle interior
Y
Directs the airflow through the
centre, the side and the foot-
well vents in the front and rear
X
Make sure that the key is in position 2in
the ignition lock.
X Turn thumbwheel 1or7 to the corre-
sponding symbol (Y page 166). The thumb-
wheel can also be turned to the area
between two symbols. Setting the airflow
X Make sure that the key is in position 2in
the ignition lock.
X To increase/reduce: press theQor
· button. Demisting the windscreen
i You should only select the "demisting"
function until the windscreen is clear again.
X Make sure that the key is in position 2in
the ignition lock.
X To activate: press theybutton.
The indicator lamp in the ybutton
comes on.
The system automatically switches to the
following functions:
R cooling with air dehumidification on
R high airflow 29
R high temperature 29
R air distribution to the windscreen and
front side windows
R air-recirculation mode off X
To deactivate: press theybutton.
The indicator lamp in the ybutton goes
out. The previously selected settings come
into effect again. The cooling with air dehu-
midification function remains on. Air-recir-
culation mode remains deactivated.
or
X Press the Ubutton.
The indicator lamp in the ybutton goes
out. Airflow and air distribution are set to
automatic mode.
or
X 2-zone Thermatic: turn thumbwheels1
or 7 clockwise or anti-clockwise
(Y page 164).
or
X 2-zone Thermatic: press theQor
· button.
29 Depending on the outside temperature. Cont
rols
211_AKB; 2; 5, en-GB
mkalafa
,V ersion: 2.9.4
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Page 178 of 401

Air conditioning
175Demisting the windows
Windows misted up on the inside X
Activate the "cooling function with air-
dehumidification" function.
X Activate the automatic mode.
X If the windows continue to mist up, activate
the "demisting" function.
Windows misted up on the outside X
Activate the windscreen wipers.
X 2-zone Thermatic: press and hold the
© orª button until the a,Ú
or Y symbol is shown in the display.
X 4-zone Thermotronic*: turn the thumb-
wheel for air distribution to the Yor
a symbol.
i You should only select this setting until
the windscreen is clear again. Switching the rear window heating
on/off
G
Risk of accident
Clear all windows of ice or snow before set-
ting off. Impaired visibility could otherwise
endanger you and others.
i At very low temperatures, the rear win-
dow heating is only switched on once the
vehicle interior has warmed up.
i The rear window heating has a high cur-
rent draw. You should therefore switch it
off as soon as the window is clear, as it only
switches off automatically after approxi-
mately six to twenty minutes.
i If the battery voltage is too low, the rear
window heating may switch off.
i Saloon: there are aerial wires in the upper
area of the rear window; this area is there-
fore not heated.
X Make sure that the key is in position 2in
the ignition lock.
X Press the ¯button.
The indicator lamp in the ¯button lights
up or goes out. Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated. G
Risk of accident
Only switch over to air-recirculation mode
briefly at low outside temperatures. Other-
wise, the windows could mist up, thus
impairing visibility and endangering your-
self and others. This may prevent you from
observing the traffic conditions, thereby
causing an accident.
X Make sure that the key is in position 2in
the ignition lock.
X To activate: press the,button.
The indicator lamp in the ,button
comes on.
i Air-recirculation mode is activated auto-
matically at high outside temperatures.
When air-recirculation mode is activated
automatically, the indicator lamp in
the , button is not lit.
Outside air is added after about
30 minutes. Cont
rols
* optional
211_AKB; 2; 5, en-GB
mkalafa ,V ersion: 2.9.4
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Page 179 of 401

Air conditioning
176
X
To deactivate: press the,button.
The indicator lamp in the ,button goes
out.
i Air-recirculation mode switches off auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
5 †
R after approximately five minutes if the air
dehumidification is deactivated
R after approximately 30 minutes at out-
side temperatures above approximately
5 †
Air-recirculation mode with the conve-
nience opening/closing feature G
Risk of injury
Make sure that nobody can become trap-
ped between the side window and the door
frame as the side windows are opened and
closed. Do not place objects or lean against
the side window when it is being opened or
closed. You or the objects could be drawn
in or become trapped between the side
window and the door frame as the window moves. If there is a risk of entrapment,
press the
,button again. If necessary,
press the switch that stops, opens or closes
the side window in the opposite direction.
Make sure that nobody can become trap-
ped when you open or close the sliding/
tilting sunroof*/panorama sliding sun-
roof*. If there is a risk of entrapment, press
the , button again. If necessary, press
the switch that stops, opens or closes the
sliding/tilting sunroof*/panorama sliding
sunroof* in the opposite direction.
X Convenience closing: press and hold
the , button until the side windows and
the sliding/tilting sunroof*/panorama
sliding sunroof* have closed.
The indicator lamp in the ,button
comes on. Air-recirculation mode is activa-
ted.
X Convenience opening: press and hold
the , button until the side windows and
the sliding/tilting sunroof*/panorama
sliding sunroof* have reached their original
position.
The indicator lamp in the ,button goes
out. Air-recirculation mode is deactivated. i
If you open the side windows or the slid-
ing/tilting sunroof* or panorama sliding
sunroof* manually after closing using the
convenience closing feature, it will remain
in this position when opened using the con-
venience opening feature. Switching the residual heat on and off
It is possible to make use of the residual heat
of the engine to continue heating the station-
ary vehicle for up to 30 minutes after the
engine has been switched off. The heating
time depends on the set interior temperature.
i The blower will run at a low speed regard-
less of the airflow setting.
i If you activate the "residual heat" function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X Make sure that the key is in position 0in
the ignition lock or that it has been
removed.
X To switch on: press theTbutton.
REST appears in the display. Cont
rols
* optional
211_AKB; 2; 5, en-GB
mkalafa
,V ersion: 2.9.4
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Page 180 of 401

Air conditioning
177
X
To deactivate: press theTbutton.
REST is no longer shown in the display.
i The residual heat automatically switches
off after around 30 minutes or if:
R the ignition is switched on
R the battery voltage drops Switching auxiliary heating/ventila-
tion* on/off
G
Risk of poisoning
Exhaust fumes are produced when the aux-
iliary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You
should therefore switch off the auxiliary
heating in confined spaces without an
extraction system, e.g. a garage. G
Risk of fire
When operating the auxiliary heating, parts
of the vehicle may become very hot, and
highly inflammable material such as fuels
could be ignited. Operating the auxiliary
heating is thus prohibited at filling stations
or when your vehicle is being refuelled. You must therefore switch off the auxiliary heat-
ing at filling stations.
The auxiliary heating heats the air in the vehi-
cle interior to a temperature between 20 †
and 24 †, without depending on heat emitted
by the running engine. The auxiliary heating
is operated using fuel directly from the vehi-
cle's fuel tank. For this reason, the tank con-
tent must be at least at reserve fuel level to
ensure that the auxiliary heating functions.
The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode
to ventilation mode.
You cannot use the auxiliary ventilation to
cool the vehicle interior to a temperature
lower than the outside temperature.
Before activating X
Make sure that the key is in position 2in
the ignition lock.
X Set the temperature to a value between
20 † and 24 †.
The auxiliary heating/ventilation can be acti-
vated even when the air conditioning is being controlled manually. Optimum comfort can
be attained when the system is set to auto-
matic mode. Set the desired temperature
within this range. If a higher temperature is
set, the vehicle is heated to 24 †. If a lower
temperature is set, the vehicle is heated to
20 †.
Activating/deactivating the auxiliary
heating/ventilation
The auxiliary heating/ventilation can be acti-
vated or deactivated using the remote control
or the button on the centre console.
The on-board computer can be used to spec-
ify up to three departure times, one of which
may be preselected (Y
page 138). Cont
rols
* optional
211_AKB; 2; 5, en-GB
mkalafa ,V ersion: 2.9.4
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Page 181 of 401

Air conditioning
178
Button on the centre console
Centre console (manual transmission)
1
Auxiliary heating/ventilation Centre console (automatic transmission*)
1 Auxiliary heating/ventilation The indicator lamps in the button may light up
in blue, red or yellow.
R
Blue: auxiliary ventilation activated
R Red: auxiliary heating activated
R Yellow: departure time preselected
Activating the auxiliary heating/ventila-
tion
If the key is in position 1or 2:
X Press and hold button 1for at least two
seconds.
The red or blue indicator lamp in button
1 lights up.
If the key is removed or in position 0:
X Briefly press button 1.
The red or blue indicator lamp in button
1 lights up.
Deactivating the auxiliary heating/venti-
lation
X Briefly press button 1.
The red or blue indicator lamp in button
1 goes out. Remote control
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For further information, con-
sult a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
The remote control has a maximum range of
approximately 300 metres. This range may be
reduced by:
R sources of radio interference
R solid objects between the remote control
and the vehicle
R the remote control being in an unfavoura-
ble position in relation to the vehicle
R transmitting from an enclosed space
i The optimum range can be achieved if you
hold the remote control vertically, pointing
upwards when you press one of the but-
tons.
i A battery symbol appears in the display
when the batteries in the remote control
are low. Replace the remote control bat-
teries (Y page 311). Controls
* optional
211_AKB; 2; 5, en-GB
mkalafa
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Air conditioning
179
i
More information about the auxiliary
heating can be found in the "Practical
advice" section (Y page 304). Auxiliary heating remote control
1 Display
2 To check the status
3 OFF – to deactivate auxiliary heating/
ventilation
4 ON – to activate auxiliary heating/venti-
lation
5 To check the status
Using the remote control, you can:
R activate or deactivate the auxiliary heat-
ing/ventilation
R check the status of the auxiliary heating/
ventilation Activating the auxiliary heating/ventila-
tion
X
Press the ONbutton.
The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is activated.
A malfunction has occur-
red in the auxiliary heat-
ing/ventilation. The
heating/ventilation
function selected by the
system is not available.
The vehicle battery is not
charged sufficiently or
the system is faulty. The signal transmission
between the transmitter
and the vehicle is faulty.
The heating system has a
fault or there is insuffi-
cient fuel in the fuel tank.
The auxiliary heating is
not working. The auxili-
ary ventilation is still
functioning.
Deactivating the auxiliary heating/venti-
lation
The auxiliary heating switches off automati-
cally after 50 minutes.
i
This time limit can be altered. To do this,
visit a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
X Press the OFFbutton. Cont
rols
211_AKB; 2; 5, en-GB
mkalafa
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Sliding sunroof
180
The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is deactiva-
ted.
The signal transmission
between the transmitter
and the vehicle is faulty.
Checking the status of the auxiliary heat-
ing
X
Press the por obutton.
The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is deactiva-
ted. A malfunction has occur-
red in the auxiliary heat-
ing/ventilation. The
heating or ventilation
function selected by the
system is not available.
The vehicle battery is not
charged sufficiently or
the system is faulty.
The signal transmission
between the transmitter
and the vehicle is faulty.
The auxiliary ventilation
is switched on. The num-
ber in the display shows
the remaining time (in
minutes) for the auxiliary
ventilation.
The auxiliary heating is
switched on. The number
in the display shows the
remaining time (in
minutes) for the auxiliary
heating. Sliding sunroof
Sliding/tilting sunroof*
G
Risk of injury
Never leave children unsupervised in the
vehicle. They could operate the sliding/tilt-
ing sunroof and injure themselves. Always
take the key with you when leaving the
vehicle, even if you only leave it for a short
time. G
Risk of injury
Make sure that nobody can become trap-
ped when you are opening and closing the
sliding/tilting sunroof. If danger threatens,
release the switch and push it briefly in any
direction to stop the sliding/tilting sunroof. G
Risk of injury
The glass in the sliding/tilting sunroof
could break in an accident. If you are not
wearing a seat belt, there is a risk that you
could be thrown through the opening in the
event of the vehicle overturning. Therefore,
always wear a seat belt to reduce the risk
of injuries. Controls
* optional
211_AKB; 2; 5, en-GB
mkalafa,
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Sliding sunroof
181
!
Only open the sliding/tilting sunroof if it
is free of snow and ice. Otherwise, mal-
functions may occur.
Do not allow anything to protrude from the
sliding/tilting sunroof. The seals could oth-
erwise be damaged.
i Resonance noises can occur in addition
to the usual airflow noises when the slid-
ing/tilting sunroof is open. They are caused
by minor pressure fluctuations in the vehi-
cle interior.
Change the position of the sliding/tilting
sunroof or open a side window slightly to
reduce or eliminate these noises.
i It is also possible to open and close the
sliding/tilting sunroof from the outside
using the "Summer opening" (Y page 109)
and "Convenience closing" (Y page 109)
features respectively.
i If PRE-SAFE ®
has been activated, the slid-
ing/tilting sunroof closes automatically,
leaving a small gap open. 1
To open
2 To close/lower
3 To raise
X Make sure that the key is in position 2in
the ignition lock.
Opening X
To open manually: press the switch in the
direction of arrow 1and hold it until the
sliding/tilting sunroof and the cover are in
the desired position.
X To open fully: press the switch briefly
beyond the pressure point in the direction
of arrow 1and release it.
X To stop: press or pull the switch in any
direction. Closing X
To close manually: pull the switch in the
direction of arrow 2and hold it until the
sliding/tilting sunroof is in the desired posi-
tion.
X To close fully: pull the switch briefly
beyond the pressure point in the direction
of arrow 2and release it.
X To stop: press or pull the switch in any
direction.
X Close the cover manually if necessary
(Y page 182).
Closing with increased force and without
the anti-entrapment feature G
Risk of injury
Make sure that nobody can become trap-
ped and be seriously or fatally injured as
you close the sliding/tilting sunroof with
increased force or without the anti-entrap-
ment feature.
If the sliding/tilting sunroof locks up during
closing:
X Immediately after it locks up, pull the
switch again to the pressure point in the Controls
211_AKB; 2; 5, en-GB
mkalafa,
Version: 2.9.4
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