climate control MERCEDES-BENZ M-CLASS SUV 2011 User Guide

more quickly
.This ma yprevent you from
observing th etraffic conditions, thereby caus-
ing an accident.
Condensation may dri pfrom th eunders ideof
the vehicl ewhen cooling mode is active .This
is norma land not asign that there is amal-
function.
i The cooling with air dehumidification
function uses refrigerant R134a. This cool-
ant does not contain chlorofluorocarbons,
and therefore does not damage the ozone
layer.
Switching on/off X
To activate: press the¿/Á button.
The indicator lamp in the ¿/Ábut-
ton lights up.
X To deactivate: press the¿/Á but-
ton.
The indicator lamp in the ¿/Ábut-
ton goes out. The cooling with air dehumid-
ification function has adelayed switch-off
feature.
Problems with the cooling with air
dehumidification function When you press the
¿/Ábutton ,the
indicator lam pint he button fla shes three
times or remains off .You can no longer switch
on the cooling with air dehumidification func-
tion.
X Consult aqualified specialist worksho p.Setting climat
econt rol to automatic
mode
In automatic mode, the set temperature is
maintained automatically at aconstant leve l.
The system automatically regulates the tem-
peratur eofthe dispensed air ,the airflow and
the air distribution.
Automatic mode will achi eveo ptimal opera-
tion if cooling with air dehumidification is also activated
.Ifdesired, coolin gwith air dehu-
midification can be deactiva ted.
In the rear compartment ,you can also switch
climate control for the rea rseats to automatic
mode using the Ãbutton.
X Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lam pintheà button lights
up. Automati cair distribution and airflow
are activated.
i THERMOTRONIC automatic climate con-
trol: when automatic mode is activated, you
can select aclimate mode setting
(Y page 125).
X To switch off: press the_button.
or
X Press the IorK button.
The indicator lamp in the Ãbutton goes
out. Setting the climat
emode
This function is only available with the
THERMOTRONIC automatic climat econtrol.
The climate control settings ar eespecially
effectiv eathigh temperatures.
You can select the following climat econtrol
settings in automatic mode:
FOCU Shigh airflow that is set slightly
cooler
MEDIU Mmedium airflow, standard setting
DI FFUS Elow airflow that is set slightly
warmer and with alower rate of
airflow
X Tur nthe key to position 2in the ignition
lock.
X Press the Ãbutton.
X Press the ñbutton repeatedly until the
desired climate mode appears in the dis-
play. Operating th
eclimat econtrol system
125Climate control Z

Setting th
etemperature
THERMATIC automatic climate control Differen
ttemperatures can be set for the
driver' sand front-passenger sides.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn controls:or
B clockwise or anti-clockwise
(Y pag e121).
Onl ychange the temperature setti ngin
small increments. Star tat2 2†.
THERMOTRONIC automatic climate
control THERMOTRONIC automatic climate control zones
You can select different temperature setti ngs
fo rt he driver's and front-passenger sides as
well as for the rea rcompartment.
X Tur nthe key to position 2in the ignition
lock.
X To increase/reduce th etemperature in
the front: turn controls :and Bclock-
wise or anti-clockwise (Y page 123).
Only change the temperatur esettin gin
small increments. Star tat2 2†.
X To increase/reduce the temperature in
the rear compartment using the front
contro lpanel: press the ábutton.
Th eindicato rlamp in the ábutton goes
out. X
Turn control :clockwise or anti-clockwise
(Y page 123).
Only change the temperature setting in
small increments. Start at 22 †.
The temperature setting for the driver's
side is adopted for the rear compartment
and the front-passenger side.
X To increase/decrease the rear compart-
ment temperature using the rear con-
trol panel: turn control Mclockwise or
anti-clockwise on the rear control panel
(Y page 123).
Only change the temperature setting in
small increments. Start at 22 †. Setting the air distribution
Front control unit:
P Directsair through the centre vents.
O Directsthe airflo wthrough the foot-
well air ven ts.
S Directsthe airflo wthrough the cen tre
and footwell vents.
¯ Directsthe airflo wthrough the demis-
ter ven ts.
b Directsthe airflo wthrough the demis-
ter and cen tre vents.
a Directs the airflow throug hthe foot-
well and demister ven ts.
_ Directsthe airflo wthrough the demis-
ter ,centre and footwell air ven ts.
Rear control panel:
M Directsthe airflo wthrough the rear
cen treand rear side air vents.
O Directsthe airflo wthrough the foot-
well air ven ts.
i Using the rear control panel, you can also
activate both air distribution positions
simultaneously .Inordertodot his, press
both air distribution buttons. The air is then
routed through all rea rair vents.
i Regardles softhe air distributio nsetting,
airflow is always directed through the side 126
Operating th
eclimat econtrol systemClimat econtrol

air vents. The side air ven
ts canonly be
closed whe nthe con trols on the side air
vent sare turne ddownwards.
X Tur nthe key to position 2in the ignition
lock.
X Front control panel: press the_but-
ton repeatedly until the desired symbol
appears in the display.
X Rea rcontrol panel: press theMand/
or O button. Setting the airflow
X Turn the key to position 2in the ignition
lock.
X To increase: press theKbutton.
X To reduce: press theIbutton.
i You can use THERMOTRONIC automatic
climate control to set the airflow in the rear
compartmen tseparately. Switching the ZONE function on/off
X To switc hon:press the ábutton.
The indicator lam pintheá button lights
up.
THERMATI Cautomatic climate control: the
temperature setting for the driver' sside is
not adopted for the front-passenger side.
The temperature of the front-passenger
side is adopted for the rear compar tment.
THERMOTRONI Cautomatic climate con-
trol: the temperature setting for the driver's
side is not adopte dfor the front-passenger
side and the rea rcompartmen t.
When the button sorcontrols for tempera-
ture, airflow or air distribution ar eactivated,
the tempe rature setting for the driver's side
is not adopted for the othe rclimate control
zones. X
To switch off: press theábutton.
The indicator lamp in the ábutton goes
out.
The temperature setting for the driver's
side is adopted for the front-passenger side
and the rear compar tment. Demisting the windscreen
You can use this fun ction to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the demisting
function until the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climat econtrol system switche stothe
followin gfunctions:
R cooling with air dehumidification on 10
R high airflow 11
R high temperature 11
R air distribution to the windscreen and
fron tside windows
R air-recirculation mode off
X To switch off: press the¬button.
The indicator lamp in the ¬button goes
out. The previously selected settings come
int oe ffect again .The cooli ngwith air dehu-
midification function remain son. Air-recir-
culation mode remain sdeactiva ted.
or
X Press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
10 Only with engine run ning.
11 Depending on the outside temperature. Ope
rating th eclimate control system
127Climate control Z

X
Tur ncontrols :orB cloc kwise or anti-
clockwise (Y page 121), (Y page 121).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿/Ácooling with air
dehumidification func tion.
X Activate automatic mode Ã.
X If the window scontinue to mist up, activa te
the demisting function (Y page 127).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
P orO symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Rear window heating
Switchin gon/off G
WARNI
NG
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window heating has ahigh cur rent
draw. You should therefore switc hitoff as
soon as th ewindow is clear ,Ito therwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rear win-
dow heati ngmay switch off. X
Turn th ekey to position 2in the ignition
lock.
X Press the ¤button.
The indicator lam pinthe¤ button lights
up or goes out.
Problems wit hthe rea rwindow hea ting The rea
rwindow heatin ghas switched off
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. readin glamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heatin gisactivated again
automatically. 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 insid ethe vehi-
cle will then be recirculated.
The operation of air-recirculation mode is the
sam efor all contr ol panels. G
WARNING
Only swit chover to air-recirculation mode
briefly at low outside temperatures. Other-
wise, the window scould mist up, thus impair-
ing visibility and endan geringyoursel fand
othe rs.T his ma ypreve ntyou from observing
the traffic conditions, thereby causing an
accident.
X Turn the key to position 2in the ignition
lock.
X To activate: press thedbutton.
The indicator lam pint he d button lights
up.
i In the even tofhigh pollution levels 12
or at
high outside temperatures, air-recircula-
tion mode is automatically activated. When
air-recirculation mode is activated auto-
12 THERMOTRONIC automatic climate control only. 128
Operating the climate control systemClimate control

matically
,the indicator lam pint he d
button is not lit.
Outside air is added after about 30
minutes.
X To switch off: press thedbutton.
The indicator lam pint he d button goes
out.
i Air-recirculation mode deactivates auto-
matically:
R after approximately fiv eminutes 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-
sid etemperatures above approximately
5†
R if you press the ¿/Ábutton and
switch on cooling with air dehumidifica-
tion Convenienc
eopening/closin gusing
th ea ir-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 object sand bod yparts 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 fram easthe window
moves. If ther eisariskofe ntrapment, oper-
ate the Wswitchto move the side window
in the opposite direction.
Make sure that nobody can become trapped
as the sliding sunroof/panorama sliding sun-
roof is ope neda nd closed. If there is arisk of
entrapment, operat ethe 3 switchtom ove
the sliding sunroof/panorama sliding sunroof
in the opposit edirection. X
Convenience closing feature: press and
hold the dbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are closed.
The indicator lamp in the dbutton lights
up. Air-recirculation mode is activated.
X Convenience opening feature: press and
hold the dbutton 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 dbutton goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the sliding
sunroof/panorama sliding sunroof man-
ually after closin gthemw ith the conveni-
enc eclosing feature, they will remain in this
position when opened using the conveni-
enc eopening feature. Activating/deact
ivatingthe residual
heat function
It is possibl etomakeu se of the residual heat
of the engine to continue heatin gthe station-
ar yv ehicle for up to 30 minutes after the
engine has been switched off .The heating
tim edepends on the temperature that has
been set.
i The blower will run at alow speed regard-
less of the airflow setting.
i If you activate the residual heat func tion
at high temperatures, only the ven tilation
will be activated. The blower runs at
medium speed.
X Turn the key to position 0in the ignition
lock or remov eit.
X To activate: press theÌ/Á button.
The indicato rlamp in the Ì/Á but-
ton lights up. Operating the climate control system
129Climate control Z

X
To deactivate: press theÌ/Á but-
ton.
The indicator lamp in the Ì/Ábut-
ton goe sout.
i Residual hea tisdeactivated automati-
cally:
R after about 30 minutes
R when the ignition is switched on
R if the batter yvoltage drops
R if the coolant temperatur eistoo low Auxiliar
yheating
Important safety notes G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhalin gthese
exhaust fumes can be poisonous. You should
therefor eswitch 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 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 vehi-
cle is being refuelled .You must therefore
switc hoff the auxiliary heating at filling sta-
tions.
! Operatin gthe auxiliary heating/ ventila-
tion draws on the vehicl ebattery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distance.
i Switch on the auxiliary heatin gregularly,
e.g. for about ten minutes ever ymonth.
The auxiliary heatin gheats the air in the vehi-
cle interior to the set temperature without
using the heat of the runnin gengine .The aux-
iliary heating is operated directly usin gthe
vehicle' sfuel. 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.
The auxiliary heating switches off when the
engine is switched off. The auxiliary ventila-
tion switches off when you turn the key to key
position 2.
The auxiliary heating switches off automati-
cally after 30 minutes. This time limit can be
altered. To do this, visit aqualified specialist
workshop, e.g. aMercedes-Benz Service
Centre.
You can notu se the auxiliary ven tilation to
cool the vehicle interior to atemperature
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 the climate control is being
controlled manually. Optimum comfor tcan
be attained when the system is set to auto-
matic 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 250).130
Operating the climate control systemClimate control

Switching th
eauxiliary heating/venti-
lation on/off using the centre console
button Th
ec olour softhe indicator lamps on the but-
ton hav ethe followin gmeanings:
Blue Auxiliar yventilation switched on
Red Auxiliar yheatin gswitched on
Yellow Departur etime preselected
(Y page 250)
Switching on auxiliary heating/ventila-
tion
X Press button :.
The red or blue indicator lamp in but-
ton :lights up.
Switching off auxiliary heating/ventila-
tion
X Press button :.
The red or blue indicator lamp in but-
ton :goes out.
Switching the auxiliar yheating/venti-
lation on/off using the remote control Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For further information, con-
sult aqualified specialist workshop, e.g. a
Mercedes-Benz Service Centre. The remote control has
amaximum 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 transmittin gfrom an enclose dspace
i The optimu mrange 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 th edisplay
when th ebatter yint he remote control is
low. Re placethe remote control battery
(Y page 132). Auxiliar
yheating remot econtrol
: Display
; . To check th estatus/set the depa r-
tur etime
= ^ To switch off th eauxiliar yheating/
ventilation
? u To switch on th eauxiliar yheating/
ventilation
A , To check th estatus/set the depa r-
tur etime
Switching on auxiliary heating/ventila-
tion
X Press the ubutton.
ON is shown in th
eremot econtrol di splay. Operatin
gthe clima tecontrol system
131Climatecontr ol Z

Switching of
fauxiliary heating/ventila-
tion
X Press the ^button.
OFF is show
ninthe remote con troldisplay.
Checking the status of the auxiliary heat-
ing/ventilation
X Press the ,or. button.
The following messages can appea rinthe
display: Display Meaning
The auxiliary heating/
ven tilation is switched
off. The auxiliary ventilation
is switched on. The num-
ber in the displa yshows
the remaining tim e(in
minutes) for the auxiliary
ventilation. The auxiliary heating is
switched on. The number
in the displa yshows the
remaining tim e(in
minutes) for the auxiliary
heating. Ad
eparture tim ehas
been activated. The
departure time appears
in the display. Ad
eparture tim ehas
been activated. The aux-
iliary ventilation is cur-
rently selected. The
departure time appears
in the display. Ad
eparture tim ehas
been activated. The aux-
iliary heating is currently
selected. The departure
time appears in the dis-
play. Setting
adeparture time
X Press the ,or. button repeatedly
until the time to be changed appears in the
display.
X Press the uand^ button ssimulta-
neously.
The Îsymbol in the remot econtrol dis-
play flashes.
X Press the ,or. button to set the
desire ddeparture time.
i The longer you press the ,or.
button ,the faster the tim echange s.
X Pres sthe u and^ button ssimulta-
neously.
The new departur etime is stored.
Activating the set departure time
X Press the ,or. button repeatedly
until the desired departur etime appears in
the display.
X Press the ubutton.
The Ísymbol and the departur etime
appear in the display.
Deactivating aset 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/ingestin gbatteries can result in
serious personal injur yordeath.
Alway skeep batteries away from children .If
ab atter yiss wallowed, seek immediat emed-
ical attention. 132
Operating th
eclimate control systemClimate control

H
Environmenta
lnote Batteries contain pollutants.
It is agains
tthe law to dis-
pose of them with the house-
hold rubbish. They must be
collected separatel yand
recycled in an environmen-
tally responsible manner. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to aqualified spe-
cialist workshop ,e.g. a
Mercedes-Benz Service
Centre, or to aspecial col-
lection point for old batter-
ies.
One 6Vp in 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
133Climate control Z

Problems wit
hthe auxiliary heating/ventilation Display messages Possible causes/consequences and
M Solutions
$
FAIL Th
es ignal transmission between the transmitter and the vehicle
is faulty.
X Change your position in relation to the vehicle, movin gcloser if
necessary.
X Make another attempt to switch the auxiliary heating on or off
using the remote control. FAIL
© This display message will only appear if you attempt to activate
the auxiliary heating.
There is not enough fuel in the fuel tank ,orthe auxiliary heating
is faulty.
X Refuel at the nearest filling station.
X Make another attemp ttos witch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at aqualified specialist
workshop. FAIL This display messag
emay appear if you attempt to activate the
auxiliary heating or during astatus query.
If the auxiliary heating doe snot switc honorh as switched off while
running, this has occurred due to one of the following reasons:
R the auxiliary heating was started more than twice when the
engine was switched off.
R the starter battery is not sufficiently charged.
R there is too little fuel in the fuel tank.
R the auxiliary heating is faulty.
If the auxiliary heating was switched on more than twice:
X Switch on the engine and let it run for more than 10 seconds.
X Make another attempt to switch on the auxiliary heating using
the remote control.
If the starter battery is not sufficiently charged:
X Charge the starter battery.
X Make another attempt to switch on the auxiliary heating using
the remote control.
If there is not enough fuel:
X Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control. 134
Operating the climate control systemClimate control