2012 MERCEDES-BENZ M-Class 4 way

otherwise
notfold inwhen youselect the
"Fold inmirrors whenlockin g"funct ioninthe
on-board computer (Ypage 237).
X Make surethattheSmart Keyisin
position 1in the ignition lock.
X Briefly pressbutton :.
Folding theexterior mirrorsinor out
aut omat ically If
the "Fold inmirrors whenlockin g"funct ion
is activated inthe on-board computer
(Y page 237):
R the exter iormirrors foldinautomatically as
soon asyou lock thevehicle fromthe
outside.
R the exter iormirrors foldoutagain
automatically assoon asyou unlock the
vehicle andthen open thedriver's orfront -
passenger door. i
The
mirrors donot fold outifthey have
been folded inmanually .
Exterior mirrorout ofposition If
an exter iormirror hasbeen pushed outof
position, proceedasfollows:
X Vehicles withoutelectrically folding
exterior mirrors: move theexter iormirror
into thecorrec tposition manually.
X Vehicles withelectrically folding
exterior mirrors: press andhold the
mirror- folding button(Ypage 103)untilyou
hear themirror engage inposition.
The mirror housing isengaged againand
you can adjust theexter iormirrors asusual
(Y page 103). Automa
ticanti-glar emirr ors G
WARNIN
G If
incident lightfrom headlamps isprevent ed
from strikingthe sensor inthe rear-view
mirror, forinstan ce,byluggage piledtoohigh in
the vehicle, themirror's automatic anti-
glare functionwill notoperate.
Inc ident lightcould thenblind you.Thismay
distract youfrom thetraffic conditionsand,
as aresult, youmay cause anaccident .
The rear-view mirrorandtheexter iormirror
on the driver's sideautomatically gointo anti-
glare mode ifthe ignition isswitched onand
incident lightfrom headlamps strikesthe
sensor inthe rear-view mirror.
The mirrors donot gointo anti-glare mode if
reverse gearisengaged orthe interior lighting
is switched on. Park
ingposition forthe exterior
mirr oron the front- passenger side
Setting andstoring theparking position You
canposition thefront -passenger side
exter iormirror insuch away that youcan see
the rear wheel onthat side assoon asyou
engage reverse gear.Youcanstore this
position. X
Make surethatthevehicle isstation aryand
that theSmart Keyisin position 2in the
ignition lock.
X En gage reverse gear.
The exter iormirror onthe front -passenger
side moves tothe preset parking position.
X Use adjustmen tbutton =toadjust the
exter iormirror toaposition thatallows you
to see therear wheel andthecurb.
The parking position isstored. 104
Mirr
orsSeats, steering wheel and mirrors

3
T
Parking lamps,license plateand
inst rument clusterlighting
4c Automaticheadlamp mode/daytime
runnin glamps
5L Low-beam/high- beamheadlamps
BR Rearfoglamp
The turn signals, high-beam headlamps and
the high-beam flasherareoperated usingthe
combinat ionswitch (Ypage 111).
! Ifthe batter yhas been excess ively
discharged, theparking lampsorstandin g
lamps areautomatically switchedoffto
enable thenext engine start.Always park
your vehic lesafely andsufficien tlylit
acc ordin gto legal standard s.Av oid the
con tinuous useofthe T parkinglamps
for sever alhours. Ifpossible ,switc hon the
X rightorthe W leftstandin glamp.
The exterior lighting(exc eptthepark ing/
st andin glamps) switchesoffautom atically if
you:
R remo vethe SmartKey fromt heignition lock
R open thedriver's doorwiththeSmartK ey
in position 0
If you hear awarning tonewhen youleave the
vehicle, thelights maystillbeswitched on.
X Turn thelight switch toc orÃ.
Low -beam headlam ps X
To switch onthe low-be amheadlam ps:
turn theSmartK eyinthe ignition lockto
position 2or start theengine.
X Turn thelight switch toL.
The L indicator lampinthe instrumen t
cluster lightsup.
Daytime runninglamps Daytime
runninglampsinCanada
The daytime runninglampsfunctionis
required bylaw inCanada .Itc ann otthere fore
be deac tivate d. X
Turn thelight switchtoc orÃ.
Wit hth een gin erun ning:depen dingon the
ambie ntlight ,th edayti merunninglamps or
th elow- beam headlam psare swit ched on.
When thelow- beam headlam psare
swit ched on,th eL indicat orlamp inthe
ins trumen tcluster lightsup.
When theengineisrunn ingand thevehic leis
st ation ary:ifyou mov ethe selec torlever from
a drive positiontoP,the daytime running
lamps/ low-beamheadlamps goout after
thr ee min utes.
When theengineisrunn ing,thevehic leis
st ation aryand inhigh ambien tlight
bright ness:ifyou turnthe light switch
to T, thedaytime runninglampsandthe
parking lampsareswitched on.
If the engine isrunning andyouturn thelight
switch toL, themanual settingstake
precedence overthedaytime runninglamps.
Daytime runninglampsinthe USA
In the USA, thedaytime runninglampsare
deactivated upondelivery fromthefactory.
X To activate thedayt imerunning
lamps: activate thedaytime runninglamps
funct ioninthe on-board computer
(Y page 234).
X Turn thelight switch toc orÃ.
With theengine running: depending onthe
ambient light,thedaytime runninglampsor
the low-beam headlampsareswitched on.
When thelow-beam headlampsare
switched on,the L indicator lampinthe
instrumen tcluster lightsup.
If the engineisrunn ingand youturnthe light
switch toT orL, themanual settings
take precedence overthedaytime running
lamps. Exterior
lighting
109Lights and windshield wipers

The
system cannotrecogn izethe following
road users:
R Road users without alighting systemof
their own, e.g.pedestrians
R Road users withdimlighting oftheir own,
e.g. cyclists
R Road users whose lighting isobstruct ed,
e.g. road users behind aguardrail
R Insome seldom cases,evenroadusers with
a lighting systemoftheir ownmay be
recogn izedtoolate ornot atall.
The automatic high-beam headlamps willthen
not bedeactivated oritwill beactivated in
spite ofpreceding oroncom ingroad users.
This could endanger youand/or othersand
cause anaccident .Always payclos eatt ent ion
to the traffic situat ionand switc hoff the high
beam manually ifnec essary. Head
lampsfogged upontheinside
The headlamps mayfogupon the inside if
the reishigh atmo spher ichumidit y.
X Dr ive with theheadlamps switchedon.
The level ofmoist uredimin ishes,
depen dingonthe lengt hof the jour ney and
the weather condition s(humidit yand
tem perat ure).
If the level ofmoist uredoes notdimin ish:
X Have theheadlamps checkedataqualified
spec ialist workshop. Inter
iorlight ing Over
view ofinter iorlight ing Over
head control panel
: p Toswitc hthe left-han dfro ntreadin g
lamp on/off
; c Toswitc hthe frontinterior lighting
on
= v Toswitc hthe rear interior lighting
on/ off
? | Toswitc hthe frontint erior lighting/
autom aticinterior lightingcon trol off
A p Toswitc hthe right -handfront
read inglamp on/off
B Toswi tch the automatic interiorlighting
control on Inte
rior lighting control
Important notes In
order toprevent thevehicl e'sbattery from
discha rging,theinterior lighting functions are
au tomatical lydea ctivated aftersome time
except forwhen theSmartKey isin posi tion
2 in the ignitio nlock.
The color andbrigh tness ofthe ambi ent
lig hting maybeset using the on-board
computer (Ypag e234).
Automatic interiorlight ingcontr ol X
To switch on:setthe rocker switc hto
cen terposit ionB. Inter
iorlight ing
113Lights and windshield wipers Z

X
To switcho ff:set the rocker switch tothe
| position.
The interior lighting automatical lyswitches
on ifyou :
R unlock thevehicl e
R open adoor
R remove theSmartKey fromtheignitio nlock
The interior lightisactivated forashort while
when theSmart Keyisremoved fromthe
ignition lock.Youcanactivate thisdelay ed
switch- offusing theon-board computer
(Y page 235).
Manua linterior lighting control X
To switch thefront interior lighting on:
set the rock erswitch tothe c position.
X To switch thefront interior lighting off:
set the rock erswitch tothe | position.
X To switch therear interior lighting on/
off: press theu button .
X To switch thereading lampson/off:
press thep button . Crash-
responsive emergency lighting
The interior lighting isactivated automatically
if the vehicle isinvolved inan accident .
X To switch offthe crash- responsive
emergency lighting:pressthehazard
warning lampbutton .
or
X Lock andthen unlock thevehicle usingthe
Smart Key. Replacing
bulbs Import
antsafety notes
Xenon bulbs If
your vehicle isequipped withXenon bulbs,
you can recogn izethis bythe following: the
cone oflight from theXenon bulbsmoves
from thetop tothe bottom andback again when
youstart theengine. Forthis tobe
observed, thelights mustbeswitched on
before startingthe engine. G
DANGER Xenon
bulbscarryahigh voltage. Youcould
get anelectric shockandbeseriously oreven
fatally injured ifyou touch theelectric
cont acts onXenon bulbs.Therefore, never
remove thecover fromXenon bulbs.
Do not change Xenonbulbsyourself, buthave
them replaced ataquali fiedspecialist
workshop whichhasthenecessary specialist
knowledge andtools tocarry outthework
required.
Mercedes-B enzrecommen dsthat youusean
authorized Mercedes-B enzCenter forthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataquali fiedspecialist workshop.
Bulbs andlamps areanimportant aspectof
vehicle safety.Youmust therefor emake sure
that these functioncorrec tlyatall times.
Have theheadlamp settingcheck edregularly .
Other bulbs There
arebulbs otherthantheXenon bulbs
that youcann otreplace. Replaceonly the
bulbs listed (Ypage 115). Havethebulbs that
you cann otreplace yourself changed ata
quali fiedspecialist workshop.
Mercedes-B enzrecomm endsthatyouusean
authorized Mercedes-B enzCenter forthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataquali fiedspecialist workshop.
If you require assistance changingbulbs,
consult aquali fiedspecialist workshop.
Do not touch theglass tubeofnew bulbs with
your bare hands. Evenminor contamination
can burn intotheglass surface andreduce
the service lifeofthe bulbs. Always usealint-
free cloth oronly touch thebase ofthe bulb
when installing.
Only usebulbs ofthe correc ttype. 114
Rep
lacingbul bsLights an dwindshield wipers

Windshi
eldwipers Swi
tchin gthe windshie ldwipers on/
off G
WARNING Wip
erbla des arecomponents thataresub ject
to wea rand tea r.Re place thewipe rb lades
twic eayear, preferably inthe sprin gand fall.
Oth erwise thewindows willnotbewiped
proper ly.As aresult ,you may notbeable to
obser vesurro undin gtraffic condition sand
could cause anacc ident .
! Donot operat ethe windsh ieldwipers
when thewindsh ieldisdry, asthis could
damage thewiper blades. Moreover,dust
that hascollec tedonthe windsh ieldcan
scr atc hthe glass ifwiping takesplace when
the windsh ieldisdry.
! Ifthe windsh ieldwipers leavesmear son
the windsh ieldafterthe vehic lehas been
washed inan autom aticcarwash, waxor
oth erresidues maybethe reason forthis .
Clean thewindsh ieldusing washer fluid
aft erwashing thevehic lein an autom atic
car wash. Combin
ationswitch
1 $ Winds hieldwipers off
2 Ä Inter mit ten twipe, low7
3 Å Inter mit ten twipe, high8
4 ° Continuous wipe,slow
5 ¯ Continuous wipe,fast B
í Single wipe
C î Towipe withwasher fluid
X Swit chon the ignit ion.
X Turn thecom binat ionswitc hto the
appropr iateposit ionorpress thebutt onon
the side.
! Inter mit ten twiping withrainsensor: due
to optic alinf luenc esand thewindsh ield
becom ingdirtyin dry weather condition s,
the windsh ieldwipers maybeact ivate d
inadv ertent ly.This could thendamage the
wind shieldwiper blades orscrat ch the
wind shield.
For this reas on,you should always switch
off thewind shieldwiper sin dry weat her.
In theÄ orÅ position,theappro priate
wipin gfrequen cyisset auto maticall y
acc ording totheint ensityof therain .In
th eÅ position,therain sensor ismor e
sen sitive than intheÄ position,caus ing
th ewind shieldwiper sto wipe more
fr equen tly. Swit
ching therea rwindow wiperon/
off Combin
ationswitch
: è Rearwindow wiperswitch
2 b Towipe withwasher fluid
3 ° Toswitc hon intermit tentwiping
7 Rain sensorset tolow sens itivity.
8 Rain sensorset tohigh sensitivity. 118
Wind
shield wipersLights and windshield wipers

4
e Toswitch offinter mittentwiping
5 b Towipe withwasher fluid
X Turn theSmart Keytoposition 1or 2in the
ignition lock.
X Slide switch :onthe combinat ionswitch
up ordown tothe appropriate position.
When therear window wiperisswitched on,
the icon appears inthe instr ument cluster. Replacing
thewiper blades
Impor tantsafety notes G
WARNIN
G For
safety reasons, switchoffthe windshield
wipers andremove thekey from theignition
lock before changin gthe wiper blades
(vehicles withKEYLE SS-GO: make surethat
the on-board electronicsare instate 0).
Otherwise, thewiper motor couldbeswitched
on suddenly andcause injury.
! Toavoid damaging thewiper blades,
make surethatyoutouch onlythewiper
arm ofthe wiper.
! Never openthehood ifawindshield wiper
arm hasbeen folded awayfromthe
windshield.
Never foldawindshield wiperarmwithout
a wiper bladebackontothe windshield/
rear window.
Hold thewindshield wiperarmfirmly when
you change thewiper blade. Ifyou release
the windshield wiperarmwithout awiper
blade anditfalls ontothe windshield, the
windshield maybedamaged bythe force of
the impact.
Mercedes- Benzrecomm endsthatyouhave
the wiper blades replaced byaq ualifi ed
spec ialist workshop,e.g. at an auth orized
Mer cedes- BenzCent er. Changing
thewindshield wiperblades Removing
thewiper blades
X Remove theSmart Keyfrom theignition
lock.
X Fold thewiper armaway fromthe
windshield. X
Firmly pressrelease knob : and pullthe
wiper bladeupwards fromthewiper armin
the direct ionofthe arrow.
Installing thewiper blades
X Position thenew wiper bladeinthe retain er
on the wiper armandslide itint oplace in
the opposite directiontothe arrow.
The wiper bladeaudibly engages.
X Make surethatwiper bladeisseated
corr ectly.
X Fold thewiper armback ontothe
windshield.
Repla cingtherear window wiperblade Removing
thewiper blade G
WARN
ING The
wiper armcould beset inmotion and
injur eyou ifthe wiper isswitch edon.
Remove thekey from theignition lockbefore
replacing thewiper blade. Windsh
ieldwipers
119Lights and windshield wipers Z

X
Remo vetheSm artKey from theign ition
loc k.
X Fo ldwiper arm:away from therear
win dow untilit en gage s.
X Pos ition wiper blade;atarig ht ang leto
wiper arm:.
X Ho ldwiper arm:and presswiper
blade ;inthedir ection ofthearr ow until
it rel ease s.
X Remo vewiper blade;.
Inst alling thewipe rblad e
X Place newwiper blade;ontowiper
arm :.
X Hold wiper arm:and press wiper
blade ;inthe opposit edirec tiontothe
arrow untilit engage s.
X Make surethatwiper blade;isseated
cor rectly.
X Posit ionwiper blade;parallel towiper
arm :.
X Fold wiper arm:back ontothe rear
window. Problem
swith thewindshield wipers
Th ewindshield wipersareobstr ucted Leaves
orsno w,for examp le,may be
obst ructingthe windsh ieldwiper movement.
The wiper motorhas been deact ivated . X
For safet yreason s,you should removethe
Smar tKey from theignit ionlock .
or
X Swit choff the engin eusing theStart/ Stop
butt onand open thedriver 'sdoor.
X Remove thecause ofthe obst ruction.
X Swit chthe windsh ieldwipers backon.
Th ewindshield wipersareinoper ative The
windsh ieldwiper driveismalfun ctionin g.
X Selec tanothe rwiper speed onthe
com binat ionswitc h.
X Have thewinds hieldwipers checkedata
qualified specialist workshop.
Th espr aynozz lesaremisa ligned The
winds hieldwasher fluidfromt hespray
nozz lesnolonger hitsthecent erofthe
windshield. Thespray nozzlesare misaligned.
X Have thespray nozzlesadjusted ata
qual ified specialist workshop. 120
Windshield
wipersLights and windshield wipers

Useful
information
i This
Operat or'sManual describesall
models andallstan dard andoption al
equipment ofyour vehicle available atthe
time ofpublication ofthe Operat or's
Manual. Country-specificdiffer encesare
possible. Pleasenotethat your vehicle may
not beequipped withallfeature s
descr ibed. Thisalso applies tosafet y-
related systemsand func tions. i
Please
readtheinfor mation onqualified
specialist workshops(Ypage 25). Overview
ofclimat econtrol systems Impor
tant safet ynotes G
WARN
ING Sever
econ dition s(e.g. strong airpollution )
may require replacem entofthe filter before
its scheduled replacementinterval. Aclogged
filt er will reduc ethe airvolume tothe interior
and thewindows couldfogup,impairin g
visibilit yand endan geringyou and others.
Have ablock edfilterreplac edataMerc edes-
Ben zCent eras soon aspossible. G
WARN
ING Follow
therecom mended settings forheating
and cooling givenonthe following pages.
Other wise, thewindows couldfogup,
impairing visibilityandendanger ingyou and
other s.
Autom aticclimate control controls the
temper atureandthehumidity ofthe vehicle
int erior andfilters outundesirable
substanc esfrom theair.
Autom aticclimate control isonly operation al
when theengine isrunn ing9
.O ptimum
operation isonly achieved ifyou drive withthe
side windows andsliding sunroof /panorama
roof with power tilt/sliding panelclosed. i
Vent
ilate thevehicle forabrief period
during warmweather, e.g.using the
con venien ceopenin gfeature (Ypage 86).
This willspeed upthe coolin gproces sand
the desired vehicleinterior temper ature
will bereached morequickly. i
The
integrated filtercanfilter outmost
partic lesofdust andcomplet elyfilter sout
pollen. Aclogged filterreduc esthe amoun t
of air supplied tothe vehic leint erior .For
this reason, youshould alwaysobserve the
inter valforreplacing thefilter, which is
specified inthe Servic eBooklet .Asit
depends onenvironmen talconditions, e.g.
heavy airpollu tion, theinterval maybe
shorter thanstated inthe Service Booklet.
9 The residua lheat function canonly beactivated/deactivated whentheignition isswitched off. 122
Overview
ofclimat econ trol systemsClimate control