climate control MERCEDES-BENZ E-CLASS ESTATE 2012 User Guide

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos-
sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 25). Overview of climate control systems
Important safety notes
G
WARNING
Observe the settings recommended on the
following pages. The windows could other-
wise mist up. This may preven tyou from
observing the traffic conditions, thereby caus-
ing an accident.
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control is only operational when the
engine is running. The system only works
optimally if the side windows and the roof are
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 150).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 96). 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 Service Booklet
.As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i It is possible that the residual heat func-
tion may be activated automatically an hour
after the key has been removed. The vehi-
cle is then ventilated for 30minutes to dry
the air-conditioning system. 142
Overview of climate control systemsClimate control

Control panel for THERMATIC automatic climate control (2-zone)
:
Activates/deactivates air-recirculation mode (Y page 149)
; Demists the windscreen (Y page 148)
= Switches the ZONE function on/off (Y page 148)
? Display
A Sets climate control to automatic mod e(Ypage 146)
B Switches cooling with air dehumidification on/off ( Ypage 145)
C Switches the rear window heating on/off (Y page 149)
D Switches climate control on/off (Y page 145)
E Sets the temperature, right (Y page 147)
F Sets the air distribution (Y page 147)
G Sets the airflow (Y page 148)
H Sets the temperature, left (Y page 147)Information about using THERMATIC
automatic climate control
The following contains notes and recommen-
dations on optimum use of THERMATIC auto-
matic climate control.
R Activate climate contro lusing the Ãand
¿ buttons. The indicator lamps above
the à and¿ buttons light up.
R Set the temperature to 22 †.
R Only use the demisting function briefly until
the windscreen is clear again.
R Only use the air-recirculation mode briefly,
e.g. if there are unpleasant outside odours
or when in a tunnel. The windows could otherwise mist up as no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side as well.T he indi-
cator lamp above the ábutton goes
out. Overview of climate control systems
143Climate control Z

Control panel for THERMOTRONIC automatic climate control (3-zone)
Fron
tcontrol panel
: Sets climate control to automatic mode (Y page 146)
; Demists the windscreen (Y page 148)
= Switches the ZONE function on/off (Y page 148)
? Display
A Activates/deactivates air-recirculatio nmode (Y page 149)
B Activates/deactivates the residual heat function (Y page 150)
C Switches cooling with air dehumidification on/off( Ypage 145)
D Switches the rear window heating on/off (Y page 149)
E Switches climate control on/off (Y page 145)
F Sets the temperature, right (Y page 147)
G Sets climate control to automatic (FOCUS/MEDIUM/DIFFUSE )(Y page 146)
H Sets the airflow (Y page 148)
I Sets the air distribution (Y page 147)
J Sets the temperature, left (Y page 147)
Rear control panel
K To increase the temperature (Y page 147)
L Display
M Increases the airflow (Y page 148)144
Overview of climate control systemsClimate control

N
Reduces the airflow ( Ypage 148)
O To reduce the temperature (Y page 147)Information about using
THERMOTRONIC automatic climate
control
The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automati ccli-
mate control.
R Activate climate control using the Ãand
¿ buttons .The indicator lamps above
the à and¿ buttons light up.
R In automatic mode, you can also use the
ñ button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 22 †.
R Only use the demisting function briefly until
the windscreen is clear again.
R Only use the air-recirculation mode briefly,
e.g. if there are unpleasant outside odours
or when in a tunnel. The windows could
otherwise mist up as no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side and the rear com-
partment as well. The indicator lamp above
the á button goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The resid-
ual heat function can only be activated or
deactivated with the ignition switched off. Operating the climate control system
Switching climate control on/off
Points to observe before use i
If climate control is switched off, the air
supply and air circulation are also switched off. Only use this setting for a brief period.
The windows could otherwise mist up.
i Switch on climate control primarily using
the à button (Y page 146).
Switching on/off X
Turn the key to position 2in the ignition
lock.
X To switch on: press theÃbutton.
The indicator lamp above the Ãbutton
lights up. Airflow and air distribution are set
to automatic mode.
or
X Press the ^button.
The indicator lamp above the ^button
goes out. The previous settings are reacti-
vated.
X To switch off: press the^button.
The indicator lamp above the ^button
lights up. Activating/deactivating the cooling
with air dehumidification function
Points to observe before use G
WARNING
If the "cooling with air dehumidification" func-
tion is deactivated, the air inside the vehicle
will not be cooled (during warm weather) or
dehumidified. The windows could mist up
more quickly. This may prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selec-
ted. Operating the climate control system
145Climate control Z

Condensation may drip from the underside of
the vehicle when cooling mode is active. This
is normal and no tasign that there is a mal-
function.
i The cooling with air dehumidification
function uses refrigerant R134a. This
refrigerant does not contain chlorofluoro-
carbons, and therefore does not damage
the ozone layer.
Switching on/off X
To activate: press the¿button.
The indicator lamp above the ¿button
lights up.
X To deactivate: press the¿button.
The indicator lamp above the ¿button
goes out. The cooling with air dehumidifi-
cation function has a delayed switch-off
feature.
Problems with the cooling with air
dehumidification function When you press the
¿button, the indica-
tor lamp in the button flashes three times or
remains off. You can no longer switch on the
cooling with air dehumidification function.
X Visit a qualified specialist workshop. Setting climate control to automatic
mode
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
Automatic mode will achieve optimal opera-
tion if cooling with air dehumidification is also
activated. If desired, cooling with air dehu-
midification can be deactivated. X
Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp above the Ãbutton
lights up. Automatic air distribution and air-
flow are activated.
i THERMOTRONIC automatic climate con-
trol: when automatic mode is activated, you
can select a climate mode (Y page 146).
X To deactivate: press the air distribution
button.
THERMATIC automatic climate control:
press button F(Ypage 143).
THERMOTRONIC automatic climate con-
trol: press button I(Ypage 144).
The indicator lamp above the Ãbutton
goes out.
or
X Press the airflow button.
THERMATIC automatic climate control:
press button G(Ypage 143).
THERMOTRONIC automatic climate con-
trol: press button H(Ypage 144).
The indicator lamp above the Ãbutton
goes out. Setting the climate mode
In automatic mode you can select the follow-
ing climate modes:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less of adraught
X Turn the key to position 2in the ignition
lock.
X Press the Ãbutton.
X Press button Gup or downa nd select the
desired level (Y page 144)146
Operating the climate control systemClimate control

Setting the temperature
THERMATIC automatic climate control Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: press switchEor
H up or down (Y page 143).
Only change the temperature setting in
small increments. Start at 22 †.
THERMOTRONIC automatic climate
control THERMOTRONIC automatic climate control zones
You can select different temperature settings
for the driver's and front-passenger sides as
well as for the rear compartment.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce the temperature in
the front compartment: press switchF
or J up or down (Y page 144).
Only change the temperature setting in
small increments. Start at 22 †.
X To increase/reduce the temperature in
the rear compartment using the front
control panel: press theábutton.
The indicator lamp above the ábutton
goes out.
X Press switch ForJ up or down
(Y page 144). Only change the temperature setting in
small increments. Start at 22 †.
X To increase/reduce the temperature in
the rear compartment using the rear
control panel: press buttonKor
O(Y page 144).
Only change the temperature setting in
small increments. Start at 22 †. Setting the air distribution
Air distribution settings P
Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs airflow through the centre,
side and footwell air vents( only for
certain countries).
¯ Directs the airflow through the demis-
ter vents
b Directs the airflow through the demis-
ter, centre and side air vents (only for
certain countries).
a Directs the airflow through the foot-
well and demister vents
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed when the controls on the side air
vents are turned downwards.
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock.
X Press switch Fup or down repeatedly until
the desired symbol appears in the display
(Y page 143). Operating the climate control system
147Climate control Z

THERMOTRONIC automatic climate
control
X
Turn the key to position 2in the ignition
lock.
X Press switch Iup or down repeatedly until
the desired symbol appears in the display
(Y page 144). Setting the airflow
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: press switchGup
or down (Y page 143).
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock.
X To increase/reduce the front-compart-
men tairflow: press switch Hup or down
(Y page 144).
X To increase/reduce the rear airflow:
press switch MorN(Y page 144). Switching the ZONE function on/off
X To switch on: press theábutton.
The indicator lamp above the ábutton
lights up.
THERMATIC automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature setting for the driver's
side is not adopted for the front-passenger
side and the rear compartment.
X To switch off: press theábutton.
The indicator lamp above the ábutton
goes out. THERMATIC automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature setting for the driver's
side is adopted for the front-passenger side
and the rear compartment. Demisting the windscreen
You can use this function to demist the wind-
screen or to demist the inside of the wind-
screen and the side windows.
Switch off the "demisting" function as soon
as the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp above the ¬button
lights up.
The climate control syste mswitches to the
following functions:
R heating with dehumidificatio non
R high airflow (depending on the outside
temperature)
R high temperature (depending on the out-
side temperature)
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
X To deactivate: press the¬button.
The indicator lamp above the ¬button
goes out. The previous settings are reacti-
vated. The heating with air dehumidifica-
tion function remains on. Air-recirculation
mode remains deactivated.
or
X Press the Ãbutton.
The indicator lamp above the ¬button
goes out. Airflow and air distribution are set
to automatic mode.
or 148
Operating the climate control systemClimate control

X
THERMATIC automatic climate control:
press temperature button EorH up or
down (Y page 143).
THERMOTRONIC automatic climate
control: press temperature button For
J up or down (Y page 144).
or
X THERMATIC automatic climate control:
press switch Gup or down (Y page 143).
THERMOTRONIC automatic climate
control: press button Hup or down
(Y page 144). Demisting the windows
Windows misted up on the inside X
Activate the ¿cooling with ai rdehu-
midification function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the demisting function (Y page 148).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
THERMATIC automatic climat econtrol:
press switch Fup or down ( Ypage 143)
until the PorO symbol appears in
the display.
X THERMOTRONIC automatic climate
control: press button Iup or down
(Y page 144) until the PorO symbol
appears in the display.
i You should only selec tthis setting until
the windscreen is clear again. Rear window heating
Switching on/off G
WARNING
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window 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 above 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 Operating the climate control system
149Climate control Z

from outside. The aira
lready inside the vehi-
cle will the nbe 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 above the gbutton
lights up.
i In the event of high pollution levels 2
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 about
30 minutes.
X To deactivate: press thegbutton.
The indicator lamp above 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 † Convenience opening/closing using
the air-recirculation button
G
WARNING
Make sure that nobody can become trapped
between the side window and the door frame
as the side windows are opened and closed.
Make sure that all objects and body parts are
clear of the side windows when they 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 above the gbutton
lights up. Air-recirculatio nmode is activa-
ted.
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 above the gbutton
goes out. Air-recirculation mode is deacti-
vated.
i If you open the side windows or the sliding
sunroof/panorama sliding sunroof man-
ually after closing them with 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
2 THERMOTRONIC automatic climate control only. 150
Operating the climate control systemClimate control

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 above 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 above the Ìbutton
goes out.
i It is possible that the residual heat func-
tion may be activated automatically an hour
after the key has been removed. The vehi-
cle is then ventilated for 30minutes to dry
the air-conditioning system.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Auxiliary heating
Important safety notes G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation .Inhaling these
exhaus tfumes can be poisonous. You should
therefore switch off the auxiliary heating in
confined spaces without an extraction sys-
tem, e.g .agarage. 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
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 heating on regularly
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 Operating the climate control system
151Climate control Z