2012 MERCEDES-BENZ CLS SHOOTING BRAKE climate control

Rear window heating
Switching on/off G
WARNING
Clea rall windows of ice or snow before setting
off .O therwise, impaired visibility could
endanger you and others.
The rea rwindow heating has ahigh current
draw. You should therefore switch it off as
soon as the window is clear .Itotherwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rea rwin-
dow heating may switch off.
X Turn the key to position 2in the ignition
lock.
X Press the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
Problems with the rea rwindow heating The rear window heating has switched off
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heating is activated again
automatically. Activating/deactivating air-recircula-
tion mode G
WARNING
Only switch over to air-recirculatio nmode
briefly at low outside temperatures. Other-
wise, the windows could mist up, thus impair-
ing visibility and endangering yourself and
others. This may prevent you from observing
the traffic conditions, thereby causing an
accident. 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.
The operation of air-recirculation mode is the
same for all control panels.
X
Turn the key to position 2in the ignition
lock.
X To activate: press thegbutton.
The indicator lamp in the gbutton lights
up.
i In the event of high pollution levels 1
or at
high outside temperatures, air-recircula-
tion mode is automatically activated. When
air-recirculation mode is activated auto-
matically, the indicator lamp above the
g button does not light up.
Outside air is added after approximately
30 minutes.
X To deactivate: press thegbutton.
The indicator lamp in the gbutton goes
out.
i Air-recirculation mode deactivates auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
5 †
R after approximately five minutes if cool-
ing with air dehumidification is deactiva-
ted
R after approximately 30 minutes at out-
side temperatures above approximately
5† with the "cooling with air dehumidi-
fication" function switche don. Convenience opening/closing using
the air-recirculation button
G
WARNING
Make sure tha tnobody can become trapped
between the side window and the door frame
as the side windows are opened and closed.
Make sure that all object sand body parts are
1 THERMOTRONIC automatic climate control only. Operating the climate control system
137Climate control
Z

clear of the side windows whe
nthey are 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 arisk of entrapment, oper-
ate the Wswitch to move the side window
in the opposite direction.
Make sure that nobody can become trapped
as the sliding sunroof/panorama sliding sun-
roof is opened and closed. If there is a risk of
entrapment, operate the 3switch to move
the sliding sunroof/panorama sliding sunroof
in the opposite direction.
X Convenience closing feature: press and
hold the gbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are closed.
The indicator lamp in the gbutton lights
up. Air-recirculation mode is activated.
X Convenience opening feature: press and
hold the gbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are opened. The side win-
dows and the sliding sunroof/panorama
sliding sunroof move back to their original
position.
The indicator lamp in the gbutton goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the sliding
sunroof/panorama sliding sunroof man-
ually after closing the mwith the conveni-
ence closing feature, they will remain in this
position when opened using the conveni-
ence opening feature. Activating/deactivating the residual
heat function
The residual heat function is only available
with THERMOTRONIC automatic climate con-
trol.
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 temperature that has
been set for the vehicle interior.
X
To activate: press theÌbutton.
The indicator lamp in the Ìbutton lights
up.
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 To deactivate: press theÌbutton.
The indicator lamp in the Ìbutton goes
out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is activated Auxiliary heating
Important safety notes G
WARNING
Exhaust fumes are produced when the auxili-
ary 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 sys-
tem, e.g. a garage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choose your parking spot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at filling stations or when your vehicle 138
Operating the climate control systemClimate control

is being refuelled. You must therefore switch
off the auxiliary heating at filling stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
i Switch the auxiliary heatin gonregularly
once a month for about ten minutes.
The auxiliary heating heats the air in the
passenger compartment to the selected tem-
perature. It does not use the heat of the run-
ning engine to do this. The auxiliary heating
is operated directly using the vehicle's fuel.
For this reason, the tank content 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.
The auxiliary heating switches off automati-
cally after 50 minutes. This time limit can be
altered. To do this, visit a qualified specialist
workshop.
You cannot use the auxiliary ventilation to
cool the vehicle interior to a temperature
lower than the outside temperature.
Before switching on X
Turn the key to position 2in the ignition
lock.
X Set the temperature.
The auxiliary heating/ventilation can be acti-
vated even when climate control is set to
manual. Optimum comfort can be attained
when the system is set to automatic mode.
Set the temperature to 22 †.
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 243).
Switching the auxiliary heating/venti-
lation on/off using the centre console
button The colours of the indicator lamps on the but-
ton have the following meanings:
Blue Auxiliary ventilation switched on
Red Auxiliary heating switched on
Yellow Departure time preselected
(Ypage 243) Switch in the centre console
X
To switch the auxiliary heating/ventila-
tion on: press button :.
The red or blue indicator lamp in but-
ton :lights up.
X To switch the auxiliary heating/ventila-
tion off: press button :.
The red or blue indicator lamp in but-
ton :goes out.
Switching the auxiliary heating/venti-
lation on/off using the remote control Points to observe before use
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For more information, please
contact a qualified specialist workshop.Operating the climate control system
139Climate control Z

The remote control has a maximum range of
approximately 300 metres. This range is
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 Abattery symbol appears in the display
when the battery in the remote control is
low. Replace the remote control battery
(Y page 141).
Switching the auxiliary heating/ventila-
tion on/off Auxiliary heating remote control
:
Display
; . To check the status/set the depar-
ture time
= ^ To switch off the auxiliary heating/
ventilation
? u To switch on the auxiliary heating/
ventilation
A , To check the status/set the depar-
ture time X
To switch on: press theubutton.
ON is shown in the remote control display.
X To deactivate: press the^button.
OFF is shown in the remote control display.
Checking th estatus of the auxiliary heat-
ing/ventilation
X Press the ,or. button.
The following messages may appear in the
display: Display Meaning
The auxiliary heating/
ventilatio
nis switched
off. 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.
Ad
eparture time has
been activated. The
departure time appears
in the display. Ad
eparture time has
been activated. The aux-
iliary ventilation is cur-
rently selected. The
departure time appears
in the display. Ad
eparture time has
been activated. The aux-
iliary heating is currently
selected. The departure
time appears in the dis-
play. 140
Operating the climate control systemClimate control

Setting the departure time
X
Press the ,or. button repeatedly
until the time to be changed appears in the
display.
X Press the uand^ buttons simulta-
neously.
The Îsymbol in the remote control dis-
play flashes.
X Press the ,or. button to set the
desired departure time.
i The longer you press the ,or.
button, the faster the time changes.
X Press the uand^ buttons simulta-
neously.
The new departure time is stored.
Activating the set departure time
X Press the ,or. button repeatedly
until the desired departure time appears in
the display.
X Press the ubutton.
The Ísymbol and the departure time
appearint he display.
Deactivating a set departure time
X Press the ,or. button.
The status of the auxiliary heating is shown
in the display.
X Press the .button.
The first departure time stored appears in
the display.
X Press the ^button.
The display message OFF appears in the
display.
Replacing the remote control battery G
WARNING
Batteries contain poisonous substances.
Swallowing/ingesting batteries can result in
serious personal injury or death.
Always keep batteries away from children. If
a battery is swallowed, seek immediate med-
ical attention. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in an
environmentally responsible
recycling system.
Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
One 6 V pin battery, type 2CR11108 is
required.
X
Prise apart the side arms of battery
cover ;and pull off battery cover ;.
X Remove old battery :.
X Insert the new battery. Observe the polarity
signs on the back of the remote control
when doing so.
X Slide battery cover ;back onto the
remote control.
X Use the remote control to check the vehi-
cle's auxiliary heating functions. Operating the climate control system
141Climate control Z

Problems with the auxiliary heating/ventilation
Display messages Possible causes/consequences and
M Solutions
FAIL The starter battery is not charged sufficiently or the system is
faulty.
X
Charge the starter battery.
X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop. $
FAIL The signal transmission between the transmitter and the vehicle
is faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating on or off
using the remote control. ©
FAIL There is not enough fuel in the fuel tank, or the auxiliary heating
is faulty.
X
Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop. Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could cause burns or frostbite to
bare skin in the immediate vicinity of the
vents. Keep bare skin away from these air
outlets. If necessary, direct the airflow away
to a different area of the vehicle interior. In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R
keep the air inlet between the windscreen
and the bonnet free of blockages, such as
ice, snow or leaves.
R never cover the vents or ventilation grilles
in the vehicle interior. 142
Adjusting the air ventsClimate control

Setting the centre air vents
:
Centre air vent, left
; Centre air vent, right
= Centre vent thumbwheel, right
? Centre vent thumbwheel, left
X To open/close: turn thumbwheels =
and ?up or down. Setting the side air vents
X
To open/close: turn thumbwheel =up or
down.
i Side window demister vent :is only
open when side air vent ;is open. Setting the glove compartment air
vent
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu- midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
compartmen
tcould be damaged. :
Air vent thumbwheel
; Air vent
When automatic climate control is activated,
the glove compartment can be ventilated, for
instance to cool its contents.T he level of air-
flow depends on the airflow and air distribu-
tion settings.
X To open/close: turn thumbwheel :
clockwise or anti-clockwise. Setting the rear-compartment air
vents
Setting the centre vents in the rear com-
partment Example: CLS Coupé
:
Rear-compartment air vent thumbwheel
; Rear-compartment air vent, right Adjusting the air vents
143Climate control Z

=
Rear control unit, only with
THERMOTRONIC automatic climate con-
trol
? Rear-compartment air vent, left
X To open/close: turnthumbwheel :up or
down. 144
Adjusting the air ventsClimate control