2012 MERCEDES-BENZ M-Class fuel pump

Problems
withthetransmission Problem Possible
causes/co nsequences andM Solutions
The
transm issionhas
problems shiftinggear. The
transm issionislosing oil.
X Have thetransm issioncheckedataqual ified specialist
workshop, e.g.anauthorized Mercedes-B enzCenter,
immediately. The
acceleration ability
is deteriorating.
The transm issionno
longer changes gear. The
transm issionisin emergency mode.
It is only possible toshift intosecon dgear andreverse gear.
X Stop thevehicle.
X Shift thetransm issiontoposition P.
X Switch offthe engine.
X Wait atleast 10seconds beforerestartingthe engine.
X Shift thetransm issiontoposition Dor R.
If D is selected, thetransm issionshiftsintosecon dgear; ifR is
selected, thetransm issionshiftsintoreverse gear.
X Have thetransm issioncheckedataqual ified specialist
workshop, e.g.anauthorized Mercedes-B enzCenter,
immediately. Refueling
Import
antsafety notes G
WARNING Gasoli
neand diesel fuelsarehighly flammable
and poisonous. Theyburnviolently andcan
cause serious injury.
Never allowsparks, flamesorsmoking
materials neargasoline ordiesel fuel!
Turn offthe engine beforerefueling.
Whenever youarearound gasoline ordiesel
fuel, avoid inhaling fumesandanyskin or
clothing contact.Extinguish allsmoking
materials.
Direct skincontactwith fuels andthe
inhalation offuel vapors aredamaging your
health. G
WARNING Overfilling
ofthe fuel tank maycreate
pressure inthe system whichcouldcause a
gas discharge. Thiscould cause thegasoline to
spray backoutwhen removing thefuel
pump nozzle,which couldcause personal
injury. G
WARNING Do
not filldiesel tankswith gasoline. Donot
mix diesel fuelwith gasoline. Otherwise the
fuel system andengine couldbedamaged. In
addition, thevehicle couldcatch fire.
! Donot use gasoline torefuel vehicles with
a diesel engine. Donot use diesel torefuel
vehicles withagasoline engine.Evena
small quantity ofthe wrong fuelwill
damage thefuel system andengine.
! Donot switch onthe ignition ifyou
accidentally refuelwiththewrong fuel.
Otherwise, thefuel willenter thefuel lines.
Notify aqual ified specialist workshop and
have thefuel tank andfuel lines drained
completely. Refueling
149Driving and parking Z

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

Do
not swit choff thetire inflation
com pressor during this ph ase.
X Allow thetire inflat ion compr essortorun
fo rf ive min utes. Thetireshould thenhave
att aine dapres sure ofat least 180k Pa
(1.8 bar/26 psi).
! Donot operate thetire inflation
compress orfor longer thaneight minutes
at atime without abreak. Itmay otherwise
overheat.
The tireinflation compress orcan be
operated againonceithas cooled down.
If apressure of180 kPa(1.8 bar/26 psi)has
been achieved afterfiveminutes, see
(Y page 332).
If apressure of180 kPa(1.8 bar/26 psi)has
not been achieved afterfiveminutes, see
(Y page 332).
Tire pressure ofat least 180kPa
(1.8 bar/26 psi)isnot reached If,
after fiveminutes, apressure of180 kPa
(1.8 bar/26 psi)hasnotbeen achieved:
X Switc hoff the tire inflation compress or.
X Unsc rewthefiller hose fromthevalve of
the faulty tire.
X Very slowly driveforwards orreverse
approximately 30ft(10 m).
X Pump upthe tire again. G
WARNIN
G If
after fiveminutes apressu reof180 kPa
(1.8 bar/26 psi)cannot beachie ved,thetire
is too badlydama gedtobe repa iredreliably
usi ng TIREFIT.
In this case TIREFIT cannotsealthetire
prope rly.
Do not drive anyfurther.
Contact thenearest authorized Mercede s-
Benz Center forassi stance orcall Roadsid e
Assistance. Tire
pressure of180 kPa(1.8 bar/
26 psi) isreache d X
Switch offthe tire infla tion compresso r.
X Unscrew thefiller hose fromthevalve of
the faultytire.
! After use,excess TIREFIT mayrunoutof
the filler hose. Thiscouldcaus estains.
Therefo re,placethe filler hose inthe plastic
bag whichcontained theTIREFIT kit.
X Stow thetire seal antbottle andthetire
infla tion compresso r.
X Pull away immediately . G
WARNING Do
not exceed avehicl espee dof 50 mph
(80 km/h). ATIREFIT repairisnot designed to
operate athigher speeds.
The sticker mustbeattached onthe
instrument clusterwhereitwill beeasil yseen
by the driver.
Vehicle handling characteristics ofaTIREFIT
repaired tiremay change. Adaptyourdriving
accordingly.
X Stop after driving forapproximately ten
minutes andcheck thetire pressure with
the tire inflation compressor. G
WARNING If
tire inflation pressure hasfallen below
130 kPa(1.3 bar/26 psi)donot cont inue to
drive thevehicle.
Park yourvehicle safelyawayfrom the
roadwa yand cont actthe nearest authorized
Mercedes-Benz CenterorRoad side
Assistance.
Have thedamaged tirereplaced.
X Correct thetire pressure ifit is at least
130 kPa(1.3 bar/20 psi)(fortherequired
value s,see theTire andLoading
Information placardonthe driver's side
B-pillar orthe tire pressure tableinside the
fuel filler flap). 332
Flat
tireBreakdown assistance

Fuel
consu mption
Et han ol(E85 )co ntains lessenerg yper gallon
th an gaso line. To ensure that theen gin e
per forman cewithet han ol(E85 )is sim ilar to
th at when usinggaso line, thee ngine mu st
bu rn mor eetha nol.Asar esult, itis to be
expect edthat fuelconsumption willincrease
when usingethanolfuel (E85 ),compared to
gasoline.
Maint enance
Inf orm your authoriz edMercedes- Benz
Center thatyouareoperatin gor have
operated thevehicle withethan ol(E85 ).
Low outsid etemp eratures
St artin gtimes maysignific antlyincrease at
temper aturesbelow32‡(0 † ).At low
outside temperatures, Mercedes- Benz
recom mends theuse ofan auxiliary heater.
For furth erinfor mation ,con sult anauthoriz ed
Mercedes- BenzCent er.
Rough idlingmayalsobeexperien cedatlow
outside temperaturesuntiltheengin eis fully
warmed up.
Et hanol (E85)is unsuitable foruse ifoutside
temper aturesfallbelow 14‡(-10 †).
High outside temperatures
At outsi detempera turesabove95 ‡(35 †) ,
the timereq uired forthe starting pro ced ure
ma yincr ease and beacc omp anied byrou gh
id ling followi ng the start.
Fu elrequ iremen ts Gas
olin een gine s
Use onlypre mium -gra deunleade dga soline.
Th eocta nenum bers hould beatleast 91.
Details canbefound onthe gas pump. The
octane number isthe average valueofthe
Research OctaneNumber (RON)andthe
Motor Octane Number (MON):(RON+
MON) /2, also known asknoc kresistance. Reformulated
gasoline(RFG)and/or
unleaded gasolinewithadditives canbeused.
However, theconc entration ofadditives in
the fuel must beless than 10%, e.g.
R Ethan ol
R TAME
R ETBE
R IPA
R TBA
For MTBE, theconc entration should not
exceed 15%.
The conc entration ofmethanol ingasoline
including otheradditives mustnotexceed 3%.
Using mixtures ofmethanol andethanol isnot
permitted. Gasohol,amixture of10% ethanol
and 90% unleaded gasoline,canbeused.
All ofthese mixfuels must fulfillthefuel
requirements, e.g.:
R knoc kresistance
R boiling point
R vapor pressure
Diese lengine s–i mporta ntsaf ety notes
! Onlyus ecomm ercially av ailabl e ULT RA-
LOW SULF URDIESEL FUEL(ULSD, 15ppm
MAX IMUMSULF UR)tha tmee tsthe
ASTM D975standa rd.Failure to use
ULT RA-L OWSULF URDIESEL FUEL(ULSD)
can sever elyda ma gethe vehicle'sexh aust
ga saf tertr eatment syste m.
! Donot fill the tank with gasol ine .Do not
bl end dies elfuel with gasol ine orkero sene.
Othe rwise, the fuel syste ma ndthe engine
cou ldbe dama ged.
To pre vent malfunctio ns,diese lfu el with
imp rove dflo wcha racteri stics isavailabl e in
the winter month s.Ch eck with your gas
sta tion.
Info rma tiono nthe fuel grade canusua llybe
found onthe gas pump. Ifthe information
cannot befound onthe gas pump, askthegas
station personnel. Forfurther information ,
consult anauthorized Mercedes-Ben zCent er 386
Service
products andcapa citiesTechnical data

or
go tothe Internet site
htt p:// www.mbusa.com (USAonly).
Diese lengines –fuels containi ngbio -
dies el(FAME [fatty acidmethyl ester])
Merced es-Benz USAapproves theuse ofB5
for alldie sel engines withcommon raildire ct
injection (CDI)andBlue TEC. The
concentration ofbio -dies elin ULSD maybea
maximu mof up to5% byvolu me.
Pure bio-dies eland diesel fuel sthat have a
high erconcentration ofbio -dies el,e.g. B20,
can dama gethe fuel system andtheengine.
They aretherefore notapproved.
For further informa tion,please askthegas
station personnel.Thelabel onthe gas pump
must indicate clearlythat theB5bio-dies el
ble nd fulfillsthe ULSD standa rd.Ifthe label
is not clea r,do not refue lthe vehi cle.
Do not refue lyou rvehicle withfuels unless
they have been approved byMercedes- Benz.
Addit ivesingasoline One
ofthe main problems ofpoor fuelquality
is the formin gof deposits thatarecreat ed
during thegasoline combustionprocess .
Mercedes- Benzrecom mends thatyouuse
fuel brands thathave theadditives.
Deposit smay form ifyou usefuels without
additives overalonger period oftime. These
deposits aremost likely toform onthe inlet
valves andinthe combust ionchamber.
This could leadtoengin eproblems, e.g.:
R longer enginewarm-up phase
R uneven idle
R engin enoise
R misfirin g
R loss ofpower
Carbon deposits mayform ifthe availabili ty
of gasoline withrelevant additives is
insuffic ient(incert ainregions). Inthis case,
Mercedes- Benzrecom mends theuse of
additives thathave been approved for
Mercedes- Benzvehicles. Consult
anauthoriz edMercedes- BenzCent er
or go tothe Internet site
htt p:// www.mbusa.com (USAonly)foralist
of approved products.Comply withthe
inst ruct ions foruse onthe product label.
Do not mix other fueladditives withfuel. This
causes unnecessary costsand could damage
the engin e.
! Donot refuel withlow-grade fuelanddo
not use fuel additives thatarenot tested
and approved forMercedes- Benzvehicles.
Damage toor malfunct ionsofthe fuel
system mayother wiseoccur. DEF
Impor tantsafet ynotes i
For
BlueTEC vehiclesonly.
DE Fisa non- flammable ,non- toxic, colorless,
odorless andwater-solubl efluid.
! Rinse surfaces thathave come into
cont actwith DEFimmediately withwater or
remove DEFusing adamp clothandcold
water. Ifthe DEF hasalrea dycrystallized,
use asponge andcold water toclean it.DEF
residues crystallize aftertimeand
cont aminate theaffected surfaces.
High outside temperatures If
DEF heats uptoover 122‡(50 †)for
extended periods,e.g.asaresult ofdirect
sunlight onthe DEF reservoir, DEFcan
decompose. Ammoniavapors develop asa
result. G
WARNING When
opening thefiller capofthe DEF tank
ammonia gasvapors mayescape. RefillDEF
in awell ventilated areaonly. Ammonia gas
vapors haveapungent odorandare
particularly irritatingforyour skin, mucous
membranes, andeyes. Inhaling ammonia gas
vapors willcause burning eyes,nose, and
throat, aswell ascoughing andwatering eyes. Service
productsand capacities
387Technical data Z