2012 MERCEDES-BENZ M-Class open hood

Cockp
it Funct
ion Pag
e :
St
eer ing wheel paddle
shif ters 14
7 ;
Comb
inationswit ch 11
1 =
In
st rum entclus ter 29
?
Hor
n A
DI
RECT SELECT leve r 14
4 B
PA
RKTRO NICwarn ing
displ ay 18
3 C
Ove
rheadcontrol pane l 34
D
Climat
eco ntrol syst ems 12
2 E
Ign
ition lock 13
9 St
art /S topbut ton 13
9 Funct
ion Pag
e F
Ad
jus tsthest eer ing wheel
man ually 10
0 G
Ad
jus tsthest eer ing wheel
elec tricall y 10
0 St
eer ing wheel heating 10
1 H
Cruise
control leve r 16
8 I
Open
sth ehood 31
2 J
On
-bo ard diagn ostic
int erf ace 24
K
Ele
ctric park ingbrak e 15
6 L
Ligh
tswitc h 10
8 M
Night
ViewAssist Plus 19
5 28
CockpitAt a glance

The
ftdete rrentlo ck ingsys tems Immo
bilizer
The imm obilize rprevents yourvehicle from
being startedwithout thecorr ectSmart Key.
When leaving thevehicle, alwaystake the
Smart Keywith youand lock thevehicle. The
engin ecan bestart edbyanyone withavalid
Smart Keythat isleft inside thevehicle.
X To activa tewith theSma rtKey: remove
the Smart Keyfrom theignition lock.
X To activa tewith KEYLE SS-GO: switchthe
ignition offand open thedriver's door.
X To deactiva te:switch onthe ignition . i
The
immobilizer isalway sdeactivat ed
when youstart theengin e.
In the event thattheengin ecann otbe
start edwhen thestart erbatter yis fully
charged, theimmobilizer maybefaulty.
Contac tana uth orizedMer cedes- Benz
Cen tero rcall 1-80 0-FO R-M ERCed es(in
US A)or1-80 0-38 7-01 00 (inCanada) . ATA
(Anti-Thef tAlar msyst em)
Av isual andaudible alarmistriggere difthe
alarm systemisarmed andyouopen :
R adoor
R the vehic lewith themec hanic alkey
R the tailgat e
R the hood
The alarm isnot switc hedoff,even ifyou
clos ethe open doorthathastriggere dit, for
exam ple. i If
the alarm stays onfor mor ethan 30
seco nds,the emer gencycall system
mbrac e(USA only)orTEL EAI D (Canada
only) initiates acall tothe Custom er
Ass istanc eCent erautom atically. The
emer gencycall systeminitiates thecall
prov ided that:
R you have subsc ribedtothe mbrac e/
TEL EAI D serv ice.
R the mbrac e/TELEAID serv icehas been
act ivat edproper ly.
R the require dmobile phone,power supply
and GPS areavailable. X
To arm: lock thevehic lewith theSmartKey
or KEYLE SS-GO.
In dicat orlamp :flashes .The alarm
system isarmed afterapproximately 15
seconds.
X To deactivate: unlockthevehicle withthe
SmartK eyorKEYLE SS-GO.
X To stop thealarm usingtheSmar tKey:
insert theSmartK eyinto theignition lock.
The alarm isswitched off.
or
X Press the% or& button onthe
SmartK ey.
The alarm isswitched off. 68
Theft
deterr entlocking systemsSafety

Low-bea
mheadlam ps(ha logen
hea dlamp s) X
Remov eth ecov erinthefron twheel arch
(Y page 115).
X Turn housin gcov er: coun ter-clo ckwise
and pullitout.
X Turn bulbholde r; coun ter-clo ckwise and
pull itout .
X Take thebulb outofbulb holde r;.
X Inser tthe new bulb intobulb holder ;.
X Insert bulbholder ;into thelamp andturn
it clockwise.
X Align housing cover:and turn it
clockwise untilitengages.
X Repla cethe cover inthe front wheel arch
(Y page 115).
High-beam headlamps(halogen
headlam ps) X
Switch offthe lights.
X Open thehood. X
Turn housing cover:counter- clockwise
and pullitout.
X Pull lever =upwa rdsand remove bulb
holder ;.
X Take thebulb outofbulb holder ;.
X Insert thenew bulb intobulb holder ;.
X Simultaneously pressbulbholder ;and
pull lever =downwards.
X Align housing cover:and turn it
clockwise untilitengages.
Parking lamps/sta ndinglamps
(halogen headlamps) X
Turn housing cover:counter- clockwise
and pullitout.
X Pull outbulb holder ;.
X Take thebulb outofbulb holder ;.
X Insert thenew bulb intobulb holder ;.
X Insert bulbholder ;.
X Align housing cover:and turn it
clockwise untilitengages. 116
Replacing
bulbsLights 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
To dea ctivate :pre ssthe Ì/Á
bu tton.
The indicator lamp inthe Ì/Á
bu tton goesou t. i Re
sidu alhea tisdeactivated
automaticall y:
R after about30 minutes
R when theignition isswitched on
R ifthe battery voltage drops
R ifthe coolant temperature istoo low Setting
theairvents Importa
ntsafety notes G
WARNING When
operating theclimate control,the air
that enters thepassenger compartment
through theairvents canbevery hotorvery
cold (depending onthe settemperature). This
could cause burnsorfrostbite tounprotected
skin inthe immediate areaofthe airvents.
Always keepsufficient distancebetween
unprotected partsofthe body andtheair
vents. Ifnecessary, usetheairdistribution
adjustment todirect theairtoair vents inthe
vehicle interior thatarenot inthe immediate
area ofunprotected skin.
In order toensure thedirect flowoffresh air
through theairvents intothevehicle interior,
please observe thefollowi ngnotes:
R keep theairinlet grille onthe hood andin
the engine compartment onthe front -
passenger sidefreeofblockages, suchas
ice, snow orleaves.
R never covertheairvents orair intake grills
in the vehicle interior. i
For
virtually draft-free ventilation, adjust
the sliders ofthe airvents tothe cent er
position. Setting
thecenter airvents :
Center airvent, left
; Center airvent, right
= Center ventthumbwheel, right
? Center ventthumbwheel, left
X To open/c lose:turnthumbwheels =
and ?tothe right orleft. Setting
theside airvents X
To open/c lose:turn thumbwheel =upor
down. Setting
theglove boxairvent
When automatic climatecontrolisactivated,
the glove boxcanbecooled, forinstance to
cool itscont ents. Thelevel ofairflow depends
on the airflow andairdistribution settings.
At high outside temperatures, opentheair
vent andactivate the"cooling withair
dehumid ification" function. 134
Setting
theairventsClimate control

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). Impor
tant safet ynotes You
willfind anillustrat ionofthe instrumen t
clust erinthe "Ataglance" section
(Y page 29). G
WARN
ING A
driver' satt ent ion tothe road andtraffic
con dition smust always behis/her primary
focus whendriving.
For your safetyand thesafet yof other s,
select ingfeature sthr ough themultifun ction
steer ingwheel should onlybedone bythe
driver whentrafficand road condition spermit
it to be done safely.
Bear inmind thatataspeed ofjust 30mph
(approxim ately50km/ h),your vehic leis
cove ringadistan ceof44 feet (approxim ately
14 m)every second. G
WARN
ING No
messages willbedisplayed ifeither the
inst rumen tclust eror the multif unction
display isinoper ative.
As aresult, youwillnotbeable tosee
info rmat ionabout yourdrivin gcon dition s,
such as
R speed
R outside temperatur e
R warnin g/indicato rlamps R
malf unction/ warn ingmes sages
R failur eof any systems
Dr ivin gch arac terist ics may beimpair ed.
If you must continue todriv e,do sowith added
caut ion.Contac tana uth oriz edMer cedes-
Ben zCent eras soon aspossible. G
WARN
ING Malfunct
ionand warning messages areonly
indicat edfor cert ainsystems andare
inten tionally notvery detailed. The
malfunct ionand warning messages are
simply areminder withrespect tothe
operation ofcert ainsystems. Theydonot
replace theowner's and/ordriver's
respons ibilitytomaint ainthe vehicle's
operatin gsafety. Haveallrequired
maint enanc eand safety checksperform edon
the vehicle. Bringthe vehicle toan authorized
Mercedes- BenzCenter toaddress the
malfunct ionand warning messages. Displays
andopera tion Coolant
temperaturedispla y G
WARN
ING Drivin
gwhen yourengine isoverheat edcan
cause somefluidswhich mayhave leaked into
the engine compart menttocatc hfire. You
could beseriously burned.
St eam from anoverheat edengine cancause
serious burnswhich canoccur justbyopening
the engine hood.Stay away fromtheengine
if you seeorhear steam comingfrom it.
St op the vehicle inasafe location awayfrom
other traffic.Turn offthe engine, getout ofthe
vehicle anddonot stand nearthevehicle until
the engine hascooled down.
The coolant temperaturegauge isin the
inst rument clusteronthe right- hand side.
Under normaloperatin gcon ditions andwith
the specified coolantlevel,thecoolant
temper aturemayriseto248 ‡(120 †). 222
Displays
andopera tionOn-board computer and displays

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions ?
Coo
lantLev elLow Sto
pVeh icl eTur n Eng
ine Off The
coolan tistoo hot.
X Pull over andstop thevehicle safelyandswitch offthe engine,
pay ing attent iontoroad andtraffic conditions.
X Make surethattheairsuppl yto the engine radiatorisnot
blocked, e.g.bysnow, slushorice.
X Wait untilthedispla ymessage disappearsbefore restarting the
engine. Otherwise, thereisarisk ofengine damage .
X Pay attent iontothe coolant temperature display.
X Ifthe temperature increasesagain,visit aqual ified speciali st
workshop immediately . The
poly-V-belt mayhave torn.
X Pull over andstop thevehicle safelyandswitch offthe engine,
pay ing attent iontoroad andtraffic conditions.
X Open thehood.
X Check whether thepoly-V-belt istorn.
If the poly-V-belt istorn:
! Donot cont inue driving. Theengine couldotherwise overheat.
X Consult aqual ified speciali stworkshop.
If the poly-V-belt isnot dam aged:
X Wait untilthedispla ymessage disappearsbefore restarting the
engine. Otherwise, thereisarisk ofengine damage .
X Pay attent iontothe coolant temperature display.
X Visit aqual ified speciali stworkshop. G
WARNING Driving
whenyourengine isoverheated cancause somefluidswhich mayhave leaked intothe
engine compartment tocatch fire.Youcould beseriously burned.
Steam fromanoverheated enginecancause serious burnswhich canoccur justbyopening the
engine hood.Stayawayfrom theengine ifyou seeorhear steam coming fromit.
Stop thevehicle inasafe location awayfrom other traffic. Turnoffthe engine, getout ofthe
vehicle anddonot stand nearthevehicle untiltheengine hascooled down.
! Ifthe coolant temperature exceeds248‡(120 †)donot cont inue driving. Theengine will
otherwise bedamage d. Dis
play messages
255On-board computer and displays Z

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions ? The
engin efan isdef ective.
X At coolan ttemperatures under248‡(120 †),drive tothe next
qualified specialist workshop.
X Avo idsubjec tingthe engin etoheavy loads, e.g.driving in
mountainous terrain,andstop- and-go traffic. # The
battery isnot being charged.
Possible causesare:
R adefectiv ealternator
R atorn poly-V-belt
R amalfunct ioninthe electron ics
X Pull over andstop thevehicle safelyandswitch offthe engine,
paying attentiontoroad andtraffic conditions.
X Open thehood.
X Check whether thepoly-V-belt istorn .
If the poly-V- beltistorn:
! Donot cont inue driving. Theengine couldotherwise overheat.
X Consult aquali fiedspecialist workshop.
If the poly-V- beltisnot dam aged:
X Visit aquali fiedspecialist workshop. 4
Check
Engine Oil At
Next Refueling The
engine oillevel hasdropped tothe minimum level.
Aw arning tone also soun ds.
X Chec kthe engine oillevel atthe latest whennextrefueling
(Y page 313).
X Ifnecessary, addengine oil(Ypage 314).
X Ifengine oilneeds tobe added moreoften thanusual,have the
engine checkedataqual ified specialist workshop. Inform
ationonapproved engineoilscan beobtained fromanyqual ified specialist workshop
or on the Internet athttp: //www.mbusa.com (USAonly).
! The oillevel istoo low. Avoid longjourneys withtoolittle engine oil.There isarisk of
engine damage.
The displa ymessages andthecorresponding symbolthatindicate thattheoillevel istoo
low must notbeignored. 256
Display
messagesOn-board computer and displays