2012 MERCEDES-BENZ M-Class fuel cap

Night
ViewAssist Plus................... 195
PARKT RONIC................................. 183
Rea rview came ra.......................... 190
Driv ingtips
Automa tictransmis sion................. 147
Brakes ........................................... 159
Break-in period.............................. 138
DISTRONI CPLUS ........................... 177
Downhi llgrad ient........................... 159
Drinking anddriving....................... 158
Driving abroad ............................... 108
Driving inwinter .............................162
Driving onfloo ded road s................ 161
Driving onsand .............................. 165
Driving onwet road s...................... 161
Driving overobsta cles................... 165
Exhaus tcheck ............................... 158
Fuel .............. ..................... ............. 158
Gene ral.......................................... 157
Hydr oplaning ................................. 161
Icy road surfaces........................... 162
Limi tedbraking effici ency on
sal ted road s................................... 160
Off-road driving.............................. 163
Off-road fording............................. 161
Ped als. ........................................... 158
Snow chains.................................. 353
Symmetri callow beam.................. 108
Tire ruts ......................................... 165
Tow ingatrail er.............................. 210
Trave linguphill....... ....... ....... ..........166
Wet road surface........................... 159
DSR (Dow nhil lSpee dRegula tion)
Dis play mess age............................ 259
Function/notes ............................. 208
DVD audio (on-bo ardcomputer) ......230
DVD video(o n-bo ardcomputer) ......230 E
EA
SY-E NTRY feature
Activating/d eactivating ................. 236
Function/notes ............................. 102
EA SY-E XITfeature
Cra sh-resp onsive........................... 102
Function/notes ............................. 102
Switchi ngon/off ........................... 236
EA SY-P ACKload-s ecuring kit........... 291EBD
(elec tronic brakeforce
distributi on)
Displ aymessa ge............................ 241
Function/notes ................................65
Ele ctric alfuses
see Fuse s
Ele ctroni cbrake forcedistributi on
see EBD (electronic brakeforce
dis tribu tion)
Ele ctroni cStabil ityProgram
see ESP®
(Electroni cStab ility Pro gram)
El ec tron icTrac tionSys tem
se e4ETS (Electr onicTra ctio nSy ste m)
Eme rgencyr elease
Dr iver 'sdoor .................................... 80
Vehi cle............................................. 80
Emerge ncyspare wheel
Storage location ............................ 329
Emerge ncyTensi oningDevic es
Function .............. ..................... ........53
Safe tyguideline s............................. 39
Emerge ncyunlo cking
Tai lga te............................................ 84
Emis sions purific ation
Service andwarranty informa tion....21
Eng ine
Che ckEngine warning lamp ....... ....276
Displ aymessa ge............................ 254
Emergency starting........................ 345
Engine number....... ........................382
Irregu larr unn ing............................ 143
Starting problems .......................... 143
Starting theengine withthe
SmartKey ....................................... 140
Starting with KEYLESS-GO .............141
Switchi ngoff .................................. 155
Eng ineelectroni cs
Prob lem(malfunction) ................... 143
Eng ineoil
Addi ng........................................... 314
Additi ves........................................ 388
Che cking theoilleve l....... .............. 313
Che cking theoilleve lusi ng the
dip stick .......................................... 313
Displ aymessa ge............................ 256
Fill ing capa city............................... 384
Notes aboutoil grad es....... ............ 388 In
dex
9

Gasoli
ne
Fuel grade !
You shou ldonly refuel withpremiu m-
grade unleadedgaso line, asthis avoids
dama gingthecataly ticconverter.
Flexibl efuel vehicle s,identifi ablefrom the
lab elinside thefuel filler flap ,can be
refuel edwith E85. Forfurther information
on flexib lefuel ,see "Fue l".
If engine running problemsareapparent,
have thecause checked immediatelyand
repa ired. Excess unburned fuelcan
otherwi seenter thecataly ticconverter,
lea ding tooverhea tingandpossi bly
causi ngafire.
! Use afilter when refuelingfrom afuel can.
Otherwi se,the fuel lines and/or injection
system couldbeblocked byparticl esfrom
the fuel can. i
Only
refuel withpremiu m-grade unleaded
gaso linewith aspecifi edminimu moctane
numb erof91 (avera gevalue of96 RON/
86 MON) .
You willus ua lly find informa tion abou tthe
fuel grade onthe pump. Ifyou cannot find
the label onthe pump, askthestaff for
assistance.
You canfind more information under"Fuel"
(Y page 385), orby cont acting an
authorized Mercedes-Ben zService Center
or visitin ghtt p://ww w.mbu sa.com (USA
only). Diesel
Fuel grade !
Only refuel withULTRA- LOWSULFUR
DIE SELFUE L(ULSD ,15 ppm SULF UR
MAXI MUM). Usingotherdiesel fuelscould
result inincr eased wearanddamage tothe
engin eand/or exhaust system.
Never refuelwithmarine dieselorheating
oil. Do
not mix these fuelswithdiesel fuelsand
do not use anyspecial additives, asthis
may result indamage.
! Use afilter when adding fuelfrom afuel
can. Other wise, thefuel lines and/or the
fuel inject ion system couldbeblocked by
particles fromthefuel can. i
Usually,
youwillfind infor mation about
the fuel grade onthe pump. Ifyou cann ot
find thelabel onthe gasoline pump,askthe
gas stationstaff .
You canfind more information under“Fuel”
(Y page 385),or by con tact ingan
authoriz edMercedes- BenzService Center
or visitin ghtt p://ww w.mbu sa.com (USA
only).
Low outsid etem pera tures !
Donot use gasoline torefuel vehicles with
a diesel engine.Never mixdiesel with
gasoline orkeros ene,asthis may result in
damage tothe engin eor fuel system.
Diesel fuelwith improved coldflowpropert ies
is available duringthewinter months.Furt her
infor mation onfuel propert iescan be
obtained fromoilcompan ies,e.g. atgas
stat ions. Refueling
Fuel filler flap The
fuel filler flapisunlock edorlocked
automatic allywhen youopen orclose the
vehicle withtheSmart Keyorusing KEYLE SS-
GO.
The position ofthe fuel filler capisdisplayed
in the instrument cluster8.T hearrow
next tothe filling pump indicates theside of
the vehicle. 150
RefuelingDriving and parking

:
Toopen thefuel filler flap
; Toinsert thefuel filler cap
= Fuel type
? Tire pressure table
Opening X
Switc hoff the engine.
X Remove theSmart Keyfrom theignition
lock.
KEYLE SS-GO: open thedriver’s door.This
switches theignition toposition 0,which
correspon dstohaving removed the
Smart Key.Thedriver’s doorcanbeclosed
again.
X Press thefuel filler flapinthe direction of
arrow :.
The fuel filler flapswings up.
X Turn thefuel filler capcount er-clockwise
and remove it.
X Insert thefuel filler capinto theholder
bracket onthe inside offiller flap;.
X Completely insertthepump nozzleinto the
filler neck andrefuel.
X Only fillthe tank untilthepump nozzle
switches off.
! Overfilling thefuel tank could damage the
fuel system. Closing X
Replace thefuel filler capand turn it
clock wise. Thefuel filler capaudibl y
engages.
X Close thefuel filler flap. i
If
you drive withthefuel filler capopen,
reserve fuelwarning lamp8 flashes. In
addition, the; Check Engine warning
lamp maylight up.Am essage appears in
the multifunc tiondisplay (Ypage 257).
For furth erinfor mation onwarning and
indicat orlamps inthe instrument cluster,
see (Ypage 276). Refueling
151Driving and parking Z

When
the Remainin
gStarts: 16 message
is shown inthe multifunc tiondisplay, youcan
start theengine 16more times. IfDE Fis not
added, itwill notbepossible torestar tthe
engine. Fillthe DEF tank withapprox. 1gal
(3.8 l)DEF ,or have itfilled ataqual ified
specialist workshop. i
If
you drive thevehicle fasterthan10mph
(16 km/h), the Check
Additive See Operator's
Manual message
goesoff
after approximately oneminute.
Further information aboutBlueTEC exhaust
gas aftertr eatment andDEF isavaila bleatany
authorized Mercedes-Ben zCent er.
Adding DEF G
WARN
ING Make
sure
R DE Fdoes notcome intocontact with skin,
eyes, orcloth ing
R to keep DEFout ofthe reach ofchildren
If you and/or othershave come intocontact
with DEF:
R IfDE Fhas gotteninto contact with eyes,
flush withplenty ofwater immediately and
seek medical help.
R Clean affectedskin immediately withplenty
of water.
R IfDE Fw asswallowe d,rin se mout h
imm ediat elywith plentyof wate rand drink
pl enty ofwa ter. Consu ltaphy sicia n. G
WAR
NING If
yo uop en the DEF tank cap,sma llamo unts
of amm oniavap orma ybe released .This
depends inparticular upontheage ofthe DEF .
Ammon iavapors haveapungent odorandare
particularly irritatingto:
R skin
R mucous membranes
R eyes You
may experience aburning sensation in
your eyes, noseandthroat, aswell as
coughing andwatering ofthe eyes.
Do not inhale anyammonia vaporsthatmay
be released. Fillthe DEF tank onlyinwell-
ventilated areas.
! Only useDEF inaccordance with
ISO 22241 .Do not mix anyadditives with
DEF ,and donot dilute DEFwith water. This
may destroy theBlueTEC exhaustgas
aftertr eatment system.
! The vehicle mustbeparked onlevel
ground tofill the DEF tank.The DEF tank
can only befilled asinten dedwith the
vehicle parkedonalevel surface. This
avoids falselevelreadings. Fillingthetank
is not permitted ifthe vehicle isnot parked
on alevel surface. Thereisadanger of
overfilling, whichcouldresult indamage to
componen tsof the BlueTEC exhaustgas
aftertr eatment .
If the outside temperature islower than
Ò11 †,damage mayoccur whenadding DEF.
If DEF isfrozen andthere isan active warning
indicator, addingmaynotbepossible. Park
the vehicle inawarmer place,e.g.inagarage,
until DEFhasbecome fluidagain. Fillingis
then possible again.Alternatively, havethe
DEF tank refilled ataqual ified specialist
workshop.
! Rinse surfaces thathave come into
cont actwith DEFimmediately withwater or
remove DEFusing adamp clothandcold
water. Ifthe DEF hasalread ycrystallized,
use asponge andcold water toclean it.DEF
residues crystallize aftertimeand
cont aminate theaffected surfaces.
! DEF isnot afuel additive andmust notbe
added tothe fuel tank .If DEF isadded to
the fuel tank ,this canlead toengine
damage.
Further information onDEF (Ypage 387). Refueling
153Driving and parking Z

Opening
theDEF filler cap The
filler neckfor DE Fisbehind thefuel filler
flap.
The fuel filler flapisunlocked orlocked
automaticall ywhen youopen orclose the
vehicle withtheSmartKey orwith KEYLES S-
GO. X
Switch offthe ignition.
X Press thefuel filler flapinthe direction of
arrow :.
The fuel filler flapswings up.
X Turn blueDEFfiller cap;
counterc lockwise andremove it.
DEF filler cap;issecured withaplastic
strap.
DEF refill bottle DEF
refill bottles canbeobtained atmany gas
stations oratan authorized Mercedes-Benz
Center. Refillbottles without athreaded cap
do not provide overfillprotection.DEF may
leak ifoverfilled. Mercedes Benzprovides
special refillbottles withthreaded caps.
These areavail able atany authorized
Mercedes-Benz Center. X
Unscrew theprotect ivecap from DEFrefill
bottle :.
X Place DEFrefill bottle :onthe filler neck
as shown andscrew iton clockwise untilit
is hand-tight.
! Only screw onthe DEF refill bottle hand-
tight. Itcould otherwise bedamaged .
X Press DEFrefill bottle :inthe direction of
the filler neck.
The DEF tank isfilled. Thismay take upto
one minute. i
When
DEFrefill bottle :isno longer
pressed, fillingstops andthebottle maybe
taken offagai nafter being only partially
emptie d.
X Rel eas eDEF refillbottle :.
X Turn DEFrefillbottle :counterclo ckwise
and remove it.
X Screw onthe cover ofDEF refillbottle :
aga in. 154
Refuel
ingDriving and parking

Closing
theDEF filler capand fuel filler
fla p X
Plac eDE Ffiller cap;onthe filler neckand
tur nit clo ckwi se.
X To closethe fuel fillerf lap, press itin the
direc tionofarrow :.
X Dr ive ataspeed above10mph (16km/h) .
The Chec
kAddi tive SeeOperator's Manu
al mess
agedisappears after
approx imatelyone minute. i
If
the Chec
kAddi tive See Oper
ator'sManu al mess
agecontinues
to be shown inthe mult ifunc tiondisplay,
you need toadd moreDE F. Par
king Imp
ortant safety notes G
WARN
ING Do
not park thisvehic lein areas where
com bustib lemat erials cancom eint ocon tact
with thehot exhaust system. Donot park the
vehic leon dry grass landorharve stedgrain
fields. Combust iblematerials, suchasgrass ,
hay orleaves couldbeignit edbythe hot
exh aust systemand cause avehic lefire . Unin
tended vehic lemov emen tcan cause
serio usperso nalinjury ordamage tothe
vehic leor the vehic ledrive train. Toreduc e
such risks,always dothe followin gbefor e
tur nin goff the engineand leavin gthe vehic le:
R keep yourright footonthe brak epedal.
R apply theelect ricpark ingbrak e.
R shift theautom atictransm ission intopark
posit ionP.
R slowly release thebrak epedal.
R when parkedon anincline, always turnthe
front wheels towards theroad curb.
R turn theSmartKey inthe ignition lockto
position 0and remove theSmartKey from
the ignition lock,orpress theKEYLES S-GO
Start /Stopbutton.
R take theSmartKey withyouand lock the
vehicle whenleaving. Switching
offthe engine
Import antsafety notes G
WARNING Never
switch offthe engine whilethevehicle
is in motion.
There isno brake boostforthe service brake
if the engine isnot running. Ifthe ignition is
switched off,there isalso nopower
assistance forthe steering.
You willrequire considerably moreeffort to
steer andbrake andyoucould therefore lose
cont rolofthe vehicle andcause anaccident. G
WARNING Keep
inmind thatturning offthe engine alone
only willshift theautomatic transmission into
neutral position Nautomatically .
Always shifttheautomatic transmission into
park position Pbefore turning offthe engine.
Otherwise thevehicle couldrollaway which
could result inan accident and/orserious
personal injury. Park
ing
155Driving and parking Z

Check
listbefor edr iving off-road X
Engine oillevel: check theen gin eoil and
add oilifne ces sary.
When drivingonsteep grad ients,th eoil
leve lmust besuff iciently high toensure a
co rrect oilsupply inthev ehicle.
X DEF tank (BlueTEC vehicles): checkthe
fluid level and,ifnec essary, refilltothe
maximum (13l)(Y page 152).
X Wheel-changing toolkit:chec kthat the
jack isworkin gand make sureyouhave the
lug wrenc h,arobust towcable andafolding
spade inthe vehicle.
X Wheels andtires: chec kthe tire tread
depth andtirepressure.
X Check fordamage andremove anyforeign
objec ts,e.g. small stones,from the
wheels/tir es.
X Replace anymissing valvecaps.
X Replace dentedordamaged wheels.
X Rims: dentedorbent rimscanresult ina
loss oftire pressure anddamage thetire
bead. Therefor e,chec kyour rims before
driving off-road andreplace themas
required.
! Ifthe engine oilwarning lamplights up
while thevehicle isin motion ,stop the
vehicle inasafe place assoon aspossible.
Check theengine oillevel. Theengine oil
warning lampwarning mustnotbeignored.
Continuing thejourney whilethesymbol is
display edcould leadtoengine damage.
Checklist afterdriving off-road G
WARNIN
G If
you notic esudden significant vibrationsor
unusual handling performanc eor ifyou
suspect thatdamage hasoccurred tothe
vehicle, youshould activate thehazard
warning lamps,gentlyreduce speedand
carefully headforanarea thatislocated ata
safe distance fromtheroad.
Check thetires andtheunderside ofthe
vehicle fordamage. Ifthe vehicle seems unsafe,
havethevehicle towedawaytothe
nearest Mercedes-B enzCenter ortire dealer
to be repaired.
! Ifyou detect damage tothe vehicle after
driving off-road, havethevehicle checked
immediately ataquali fiedspecialist
workshop.
Drivin gover rough terrain placesgreater
demands onyour vehicle thandriving on
normal roads.Afterdriving off-road, check
the vehicle. Thisallows youtodetect damage
promptly andreduce therisk ofan accident
to yourself andother roadusers.
X Deact ivateDSR(Ypage 208).
X Vehicles withtheAIRMATIC package:
lower thevehicle toaride height suitable
for the road condit ions,e.g.tothe
highway /high-speed level.
X Clean theheadlamps andrear lights and
check fordamage.
X Clean thefront andrear license plates.
X Clean thewheels/tires withawater jetand
remove anyforeign objects.
X Clean thewheels, wheelarches andthe
vehicle underside withawater jet;check
for any foreign objectsand damage.
X Check whether twigsorother partsof
plants havebecome trapped. These
increase therisk offire and candamage
fuel pipes, brakehoses orthe rubber
bellows ofthe axle jointsand propeller
shafts.
X Aft erthe trip, examine withoutfailthe
entire undercarriage, wheels,tires,brakes,
bodywork structure,steerin g,chassis and
exhaust systemfordamage.
X Aft erdriving forexten dedperiods across
sand, mud,gravel, waterorinsimilarly dirty
condit ions,havethebrake discs, wheels,
brake pads/linings andaxle jointscheck ed
and cleaned.
X Ifyou detect strongvibrations afteroff-road
travel, checkforforeign objectsin the
wheels anddrive trainandremove themif 164
Driving
tipsDriving and parking

You
willfindthe values approve dby the
manuf acturer onthe vehic leident ification
plates andthosefor the towin gvehic lein the
"Techn icaldata" section. G
WARN
ING When
towingatrailer, yourvehic le'shandlin g
char acterist icswill bediffe rentinc omparison
with when driving without atrail er.
The vehicl e/trail ercombina tion:
R isheavi er
R isrestricted inits accele rationand
grad ient-climbi ngcapa bility
R has anincrease dbraking distance
R isaffected morebystrong crosswi nds
R dema ndsmore sensitive steering
R has alarg erturning circle
As aresul t,the handl ingchara cteristics may
be impa iredandyoumay losecontrol ofthe
vehicl e.This could leadto an accide ntwith
serio usoreven fatalinjurie s.
When towing atrail er,alw aysadju styou r
speed tothe current roadandweather
conditions. Donot exceed themaximu m
permis siblespeed foryou rvehicle/t railer
combin ation. G
WARN
ING Never
depress thebrake pedalcontinuously
while thevehicle isin motion ,e.g. never cause
the brakes torub byapplying constant slight
pedal pressure. Thiscauses thebrake system
to overheat ,incr eases thebraking distance
and canlead tothe brakes failingcomplet ely. G
WARN
ING Under
nocirc umstan cestrytostraight enthe
vehicle/ trailercombin ationbyincr easing the
speed. General
information R
Do not exceed thelegally prescribed
maximum speedforvehicle/t railer
combin ationsinthe relevant country.
This lowers therisk ofan acciden t.
R Only installan approved trailercoupling on
your vehicle.
Furt herinfor mation onavailabil ityand on
inst allation isavailable fromanyauthorized
Mercedes- BenzCenter .
R The bumpers ofyour vehicle arenot
suitable forinst alling detachable trailer
couplings.
R Do not installhired trailer couplings or
other detachable trailercouplings onthe
bumpers ofyour vehicle.
R To reduce therisk ofdamage tothe ball
coupling, removeitfrom theball coupling
recess whennotinuse. i
When
towing atrailer, setthe tire
pressure onthe rear axle ofthe towing
vehicle foramaximum load;seethetire
pressure tableinthe fuel filler flap
(Y page 371).
You willfind installation dimension sand loads
in the "Technic aldata" section
(Y page 391).
The maximum noseweight ofthe trailer
drawbar onthe ball coupling is16
.However,
the actual noseweight mustnotexceed the
value given onthe trailer towhitchor trailer
identif ication plates.Thelowest weight
applies.
! Use adrawbar noseweight asclose as
possible tothe maximum permissible
noseweight .Donot use anoseweight of
less than theminimum permissible
noseweight, asthe trailer mayotherwise
come loose. Missing valueswerenot
availa bleattime ofgoing toprint.
Note thatthepayloa dand therear axle load
are reduced bythe actual payload.
16 Missing valuesunavailable attime ofgoing toprint. Tr
ailer towing
211Driving and parking Z