2012 MERCEDES-BENZ M-Class window defrost

Cont
rolpanel for3-zone autom atic clim atecont rol Canad
aon ly
: Setsth ete mper ature,left (Ypage 130)
; Defrost sth ewind shield(Y page 131)
= Activate s/deac tivate sth eres idual heatfunction (Ypage 133)
? Activate s/deac tivate sco olin gwithairdehumidif ication (Y page 128)
A Swit ches therear window defrosteron/ off(Ypage 132)
B Setsthe tem perat ure,right (Ypage 130)
C Swit ches theZONE function on/off(Ypage 131)
D Swit ches climatecontrol on/ off(Ypage 128)
E Setsthe airdist ribut ion(Ypage 130)
F Incr eases theairflow (Ypage 131)
G Reduces theairflow (Y page 131)
H Disp lay
I Adjusts theclim atecontrol set tings (AIRFLO W)(Ypage 129)
J Activates /deac tivates air-recirculat ionmode (Ypage 133)
K Setsclim atecontrol to autom atic(Ypage 129)
Rea rcontr olpa nel
L Incr eases theairflow (Ypage 131)
M Setsthe tem perat ure(Ypage 130)
N Setsthe rear- compartmen tclim atecontrol to autom atic(Ypage 129)
O Direct sthe airflow through therear airven ts(Y page 130)
P Direct sthe airflow through thefoot well vents(Y page 130)
Q Swit ches rear-compartmen tclim atecontrol on/ off(Ypage 128)
R Reduces theairflow (Y page 131) 126
Over
view ofclima tecontr olsyst emsClimate control

USA
only
: Sets thetemperature, left(Ypage 130)
; Defrosts thewindshiel d(Y page 131)
= Switches maximum coolingMAXCOOL on/off (Ypage 132)
? Activates/deactivates coolingwithairdehumid ification(Ypage 128)
A Switches therear window defroster on/off(Ypage 132)
B Sets thetemperature, right(Ypage 130)
C Switches theZONE function on/off(Ypage 131)
D Switches climatecontrolon/off (Ypage 128)
E Sets theairdistribution (Ypage 130)
F Increases theairflow (Ypage 131)
G Redu cestheairflow (Ypage 131)
H Display
I Adjusts theclimate controlsettings (AIRFLOW) (Ypage 129)
J Activates/deactivates air-recirculationmode(Ypage 133)
K Sets climate controltoautomatic (Ypage 129)
Rear control panel
L Increases theairflow (Ypage 131)
M Sets thetemperature (Ypage 130)
N Sets therear-compartment climatecontroltoautomatic (Ypage 129)
O Directs theairflow through therear airvents (Ypage 130)
P Directs theairflow through thefootwell vents(Ypage 130)
Q Switches rear-compartment climatecontrolon/off (Ypage 128)
R Redu cestheairflow (Ypage 131) Overview
ofclimat econ trol systems
127Climate control Z

Note
son using 3-zo neauto matic
cl imate contro l
Th efol lowi ng conta insnote sand
rec omm endations onoptim um opera tiono f
auto maticclim atecontrol.
R Ac tivate clim atecontrol usin gth eà and
¿ buttons .T he indicator lampsinthe
à and¿ buttons lightup.
R In automatic mode,youcan also usethe
ñ button toset aclimate mode
(FOCUS/ME DIUM/DIFFUSE). The
MEDI UMlevel isrecommen ded.
R Set thetemperature to72 ‡(22 †).
R Only usethe"defrosting" functionbriefly
until thewindshield isclear again.
R Only use"air-recirculation" modebriefly,
e.g. ifthere areunpleasa ntoutside odors
or when inatunn el.The windows could
otherwise fogupas, inair-recirculation
mode, nofresh airisdrawn intothevehicle.
R Use theZONE functiontoadopt the
temperature settingson the driver's side
for the front -passenger sideandtherear
compartmen taswell .The indicator lampin
the á button goesout.
R Use theresidual heatfunct ionifyou want
to heat orvent ilate thevehicle interior
when theignition isswitched off.The
"residu alheat" functioncan only be
activated ordeactivated withtheignition
switched off. Operat
ingthe climate controlsystem Activating/deactivating
climate
control
Import antinformat ion G
WARNING When
theclimate controlsystem is
deactivated, theoutside airsupply and
circulation arealso deactivated. Onlychoose
this settin gfor ashort time.Otherwise the windows
couldfogup,impairing visibilityand
endangering youand others. i
Switch
onclimate controlprimarily using
the à button (Ypage 129).
In the rear compartmen t,you can also switch
climate controlonand offusing theà and
^ buttons.
Activating/deactivating X
Turn theSmartK eytoposition 2in the
ignition lock.
X To switch on:press theà button.
The indicator lampinthe à button lights
up. Airflow andairdistribution aresetto
automatic mode.
or
X Press the^ button.
The indicator lampinthe ^ button goes
out. Thepreviously selectedsettingscome
into effect again.
X To switch off:press the^ button.
The indicator lampinthe ^ button lights
up. Activating/deactivating
thecool ing
with airdehum idification function
Import antinformat ion The
cooling withairdehumidi ficationfunction
is only availa blewhen theengine isrunning.
The airinside thevehicle iscooled and
dehumidi fiedaccording tothe temperature
selected. G
WARNING If
you switch offthe cooling function,the
vehicle willnotbecooled whenweather
condition sare warm. Thewindows canfogup
more quickly. Window foggingmayimpair
visibili tyand endanger youand others.
Condensation maydripfrom theunderside of
the vehicle whenitis in cooling mode.Thisis 128
Operat
ingthe climate controlsystemClimate control

Rear
control panel:
M Directsthe airflo wthrou ghthe rear
center andrearsid eairvents.
O Directsthe airflo wthrou ghthe
footw ellai rv ent s i
Using
therear control panel, youcan also
activat eboth airdistribut ionposition s
simultaneously. Inorder todo this, press
both airdistribut ionbutton s.The airisthen
routed through allrear airvent s. i
Regardless
ofthe airdistribut ionsett ing,
airflow isalway sdirect edthrough theside
air vent s.The side airvent scan only be
closed whenthecontrols onthe side air
vent sare turn eddownwards.
X Turn theSmart Keytoposition 2in the
ignition lock.
X Front control panel:pressthe_
button repeatedly untilthedesired symbol
appears inthe display.
X Rear control panel:presstheM and/
or O button . Sett
ingthe airflow
X Turn theSmart Keytoposition 2in the
ignition lock.
X To increase: presstheK button .
X To redu ce:press theI button . i
You
canuseautomatic climatecontrol to
set the airflow inthe rear compart ment
separately. Switching
theZONE function on/off
X To switch on:press theá button .
The indicat orlamp inthe á button lights
up.
Dual-z oneautomatic climatecontrol: the
temper aturesettingforthe driver's sideis not
adopted forthe fron t-passenger side.
The temper atureofthe fron t-passenger
side isadopted forthe rear compart ment.
Autom aticclimate control: the
temper aturesettingforthe driver's sideis
not adopted forthe fron t-passenger side
and therear compart ment.
When thebutton sor con trols for
temper ature,airflow orair distribut ionare
activat ed,the temper aturesettingforthe
driver's sideisnot adopted forthe other
climate control zones.
X To switch off:press theá button .
The indicat orlamp inthe á button goes
out.
The temper aturesettingforthe driver's
side isadopted forthe fron t-passenger side
and therear compart ment. Defrosting
thewindshield
You canusethis func tion todefrost the
windshield ortodefrost theinside ofthe
windshield andtheside windows. i
You
should onlyselect thedefrost ing
func tion until thewindshield isclear again.
X Turn theSmart Keytoposition 2in the
ignition lock.
X To activa te:press the¬ button .
The indicat orlamp inthe ¬ button lights
up.
The climate control system switchestothe
following functions:
R cooling withairdehumidification on11
R high airflow 12
R high temper ature12
R air distribut iontothe windshield and
fron tside windows
R air-r ecirculat ionmode off
11 Only withenginerunn ing.
12 Depe ndingon the outs idetem perat ure. Oper
ating theclima tecontr olsyst em
131Climate control Z

X
To switchof f:pre ssthe ¬ button.
The indicator lamp inthe ¬ button goes
ou t.The previouslysel ecte dsettings come
int oeffec tagain. Thecooling withair
dehumidification functionremains on.Air-
recirculation moderemains deactivated.
or
X Press theà button .
The indicator lampinthe ¬ button goes
out. Airflow andairdistribution aresetto
automatic mode.
or
X Turn controls:orB clock wiseor
count er-clockwise (Ypage 123),
(Y page 123).
or
X Press theK orI button . Switching
maximumcool ingMAX
COOL on/off
The MAX COOL functionisonly availa blein
vehicles forthe USA .
MAX COOL isonly operational whenthe
engine isrunnin g.
When youactivate MAXCOOL, climate
cont rolswitches tothe following functions:
R maximum cooling
R maximum airflow
R air-recirc ulationmodeon
X To activat e:press theÙ button .
The indicator lampinthe button lightsup.
X To deactivat e:press theÙ button
again.
The indicator lampgoesout.Thepreviously
selected settings come intoeffect again. Defrosting
thewindows
Windows foggeduponthe inside X
Act ivate the¿/Á coolingwithair
dehumidification function.
X Act ivate automatic modeÃ.
X Ifthe windows continue tofog up,activate
the defrostin gfunct ion(Ypage 131). i
You
should onlyselect thissettinguntil
the windshield isclear again.
Windows foggeduponthe outside X
Act ivate thewindshield wipers.
X Press the_ button repeatedly untilthe
P orO symbol appears inthe
display . i
You
should onlyselect thissettinguntil
the windshield isclear again. Rear
window defroster
Activating/deactivat ing G
WARNING Any
accumulation ofsnow andiceshould be
removed fromtherear window beforedriving.
Visibility couldotherwise beimpaired,
endangering youand others.
The rear window defroster hasahigh current
draw. Youshould therefor eswitch itoff as
soon asthe window isclear asitonly switches
off automatically afterseveral minutes.
If the battery voltage istoo low, therear
window defroster mayswitch off.
X Turn theSmart Keytoposition 2in the
ignition lock.
X Press the¤ button .
The indicator lampinthe ¤ button lights
up orgoes out. 132
Opera
tingtheclimate controlsystemClimate control

Problems
withtherear window
defroster The
rear window defroster hasdeactivated
itself prematurely orcannot beactivated.
X Switch offany consumers thatarenot
required, e.g.reading lampsorinterior
lighting.
When thebattery issufficiently charged,
the rear window defroster isactivated
again automatically. Activating/deactivating
air-
recirculation mode
You candeactivate theflow offresh airif
unpleasant odorsareenterin gthe vehicle
from outside. Theairalready insidethe
vehicle willthen berecirculated.
The operation ofair-recirculation modeisthe
same forallcont rolpanels. G
WARNING Fogged
windows impairvisibility,
endangering youand others. Ifthe windows
begin tofog onthe inside, switching offthe
air recirculation modeimmediately should
clear interior window fogging. Ifinterior
window foggingpersists, makesuretheair
condition ingisactivated, orpress the¬
button.
X Turn theSmartK eytoposition 2in the
ignition lock.
X To activate: pressthed button.
The indicator lampinthe d button lights
up. i
In
the event ofhigh pollu tionlevels 13
or at
high outside temperatures, air-
recirculation modeisautomatically
activated. Whenair-recirculation modeis
activated automatically ,the indicator lamp
in the d button isnot lit.
Outside airisadded afterabout 30
minutes. X
To switch off:press thed button.
The indicator lampinthe d button goes
out. i Air-r
ecirculation modedeactivates
automatically :
R after approximately fiveminutes if
outside temperatures areless than about
41 ‡(5 †)
R after approximately fiveminutes if
cooling withairdehumidi ficationis
deactivated
R after approximately 30minutes ifoutside
temperatures areover about
41 ‡(5 †)
R ifyou press the¿/Á buttonand
switch oncooling withair
dehumidi fication Activating/deactivating
theresidual
heat function
The residual heatfunct ionisonly availa blein
Canada
It is possible tomake useofthe residual heat
of the engine tocont inue heating the
stationary vehicleforupto30 minutes after
the engine hasbeen switched off.The heating
time depends onthe temperature thathas
been set. i
The
blower willrun atalow speed
regardless ofthe airflow setting. i
If
you activate theresidual heatfunct ion
at high temperatures, onlythevent ilation
will beactivated. Theblower runsat
medium speed.
X Turn theSmartK eytoposition 0in the
ignition lockorremove it.
X To activate: presstheÌ/Á button.
The indicator lampinthe Ì/Á
button lightsup.
13 Automatic climatecontrolonly. Operat
ingthe climate controlsystem
133Climate control Z