Engine number
The engine number is
stamped ont othe crank‐
case. Youc an obtain fur ther information from any
qu alified specialis tworks hop. Operating fluids and capacities
Note
sono perating fluids &
WARNING Risk of inju ryfrom operating
fl uids harmful to your health
Operatin gfluids ma ybepoisonous and harm‐
ful to yo ur health. #
Obse rvet he text on theo riginal contain‐
er sw hen using, storing or disposing of
operating fluids. #
Alwayss tore operating fluids sealed in
th eir original containers. #
Alwaysk eep children away from operat‐
ing fluids. +
ENVIRONMEN
TALN OTE Environmental
pollution du etodisposing of operating
fl uids in anon-en vironmen tallyr esponsi‐
ble manner Operating
fluids include thef ollowing:
R fuels
R exhaus tgas af tertre atment additives, e.g.
DEF
R lubricants
Incor rect disposal of ope rating fluids can
caus econsiderable damag etothe environ‐
ment. #
Dispose of operating fluids in an envi‐
ro nmentally responsible manner. Operating
fluids include thef ollowing:
R Fuels
R Exhaus tgas af tertre atment additives, e.g.
DEF
R Lubricants
R Coolant
R Brak efluid
R Windshield washer fluid
R Climat econtrol sy stem refrigerants
Use only products recommended byMercedes-
Benz.D amagecaused bytheu se of products that ha
ve notb eena pprove disn otcoveredbyt he
Mercedes-Benzg uarantee or goodwill gestures.
Yo uc an identif yoperatin gfluids appr oved by
Mercedes-Benzbyt hefollowing insc ript ions on
th ec ontainer:
R MB-F reigabe (e.g. MB- Freigabe 229. 51 )
R MB-Appr oval (e.g. MB-App rova l2 29.51)
Fu rther information on appr ovedoperating fluids
is available at thef ollowing locations:
R IntheMBS pecification sfor operating fluids
at http://be vo.mercedes-benz.com (b yenter‐
ing thed esignation)
R Ataq ualified specialis tworks hop &
WARNING Risk offire or explosion from
fuel
Fu els ar ehighl yflammable. #
Fire, open flames ,smokin gand creation
of spar ksmus tbea voided. #
Swit chofft he ignition and, if available,
th es tationar yheater ,befor eand while
re fueling thev ehicle. &
WARNING Risk of inju ryfrom fuels
Fu els ar epoisonous and hazardous to your
health. #
Do no tswa llowf uel or le titcomeinto
con tact wi thskin, eyes or clo thing. #
Do no tinhale fuel vapor. #
Keep children away from fuel. #
Keep door sand windo wsclosed du ring
th er efueling process.
If yo uoro ther people come int ocontact with
fuel, obser vethef ollowing: #
Immediatel yrins efueloffyo ur skin with
soap and water. #
If fuel comes int ocontact wit hyour
ey es, immediatel yrins ethem thor‐
oughly wit hclean water.Seek medical
attentio nimmediately. #
Ifyo us wallowf uel, seek medical atten‐
tio nimmediatel y.Do no tinduce vomit‐
ing. #
Chang eimmediately out of clo thing that
has com eintoc ontact wi thfuel. 254
Tech nica ldata
Fu
el Note
sonf uelgrades on vehicles with agaso‐
line engine
Obse rvet he no tesono perating fluids
(/ page254).
* NO
TEDo no tuse diese ltorefuel vehicles
wit hag asoline engine. If
yo ua cciden tally refuel wit hthe wrong fuel:
R Do no tswitc hont he ignition. Otherwise
fuel can enter thee ngine.
Even small amounts of thew rong fuel
could result in damag etothe fuel sy stem
and thee ngine. The repair costs ar ehigh. #
Contact aqualified specialis tworks hop. #
Have thef uel tank and fue llin es drained
comple tely. Only
refuel using lo w-sulfur regular fuel wit hat
leas t87A KI/91RON.
% E1
0f uelcontains an additiv eofupto10%
et hanol. Your vehicle is suitable foru se with
E1 0f uel.Y ou can fuel your vehicle wit hE10
fuel.
* NO
TEDama gecaused bythew rong fuel Even small amounts of
thew rong fuel could
re sult in damag etothe fuel sy stem, engine
and exhaus tsystem. #
Onlyrefuel wit hthe recommended fuel. *
NO
TEDama gecaused bythew rong fuel Even small amounts of
thew rong fuel could
re sult in damag etothe fuel sy stem, engine
and exhaus tsystem.
Ne verrefuel wit hthe following:
R Diesel
R Gasoline wit hmoret han 10%e thanol by
vo lume, e.g. E15, E20, E85, E100
R Gasoline wit hmoret han 3% me thanol by
vo lume, e.g. M15, M30 ,M85,M 100
R Gasoline wit hadditives con tainin gm etal #
Do no tmix su chfuel switht he fuel rec‐
ommended fory our vehicle. %
To
ensur ethe long evity and per form anc eof
th ee ngine, onl yunleaded regular gasoline
ma ybeu sed. No
tethat theh igher quality premium grade
ga soline can be refueled at an ytime.
If yo ua reusin gdrums or canis ters to refuel the
ve hicle, yous houl dfilter thef uel befor efilling.
This will pr event malfunctions in thef uel sy stem
due tocontaminated fuel.
Usually youw illfind information abou tthe fuel
grade on thef uel pump. If ther eisnoi dentifica‐
tion on thef uel pump, consult agasstation
attendant.
% Fo
rfurther information ,contact aqualified
specialis tworks hop or visit http://
www.mbusa.com (US Aonly).
Note sona dditives in gasoline
Obser vethen otes on operating fluids
(/ page254).
* NO
TEDama gefrom use of unsuitable
additives Even smal
lamounts of thew rong additive
ma ylead tomalfunctions. #
Only add cleaning additives recommen‐
ded byMercedes-Benzt othe fuel. Mercedes-Benz
recommends using brand-name
fuels wi thadditives.
In som ecountries, thea vailable fuel ma ynotcon‐
ta in suf ficient amounts of additi ves. Deposits
could buildupint he fuel injection sy stem as a
re sult.
In this case, in consultation wit hanauthorized
Mercedes-Benz Center ,the fuel should be mixed
wit hthe cleaning additiv erecommended by
Mercedes-Benz.
Yo um usto bse rvet he no tesa nd mixing ratios
indica tedont he container.
Note sonf uelgrades on vehicles with diesel
engines
Gene raln otes
Obse rvet he no tesono perating fluids
(/ page254). &
WARNING Risk offire from fuel mixture
If yo um ix diese lfuel wit hgasoline ,the flash
poin toft he fuel mixtur eislowerthan that of
pur ediese lfuel.
While thee ngine is running ,component pa rts
in thee xhau stsystem ma yoverheat without
wa rning. Te
ch nica ldata 255
#
Neverrefuel using gasoline in diesel
engines. #
Neverm ixga soline wit hdiesel fuel. *
NO
TEDama gedue toincor rect fuel Even small amounts of
thew rong fuel could
re sult in damag etothe fuel sy stem, the
engine and emission cont rols yst em.
Ne verrefuel with:
R Gasoline
R Marine diesel
R Heating oil
R Purebio-diese lorvegetab le oil
R Paraffin or kerosene #
Do no tmix suc hfuels wit hdiesel fuel
and do no tuse an yspecial additives.
If yo uh ave accidentally refueled wit hthe
wrong fuel ,obser vethef ollowing: #
Do no tswitc hont he ignition. #
Consult aqualified specialis tworks hop. *
NO
TEMalfunctions du etocontaminated
fuel Fu
el contamination can lead tomalfunctions
in thef uel sy stem. #
Ifyo ua reusin gdrums or canis ters to
re fuel thev ehicle, yous houl dfilter the
fuel befor efilling. *
NO
TEDama gedue toincor rect fuel Incor
rect fue lcan lea dtoengine damage. #
Refuel only ULSD or diesel fuel wit ha
sulfur content of maximu m15ppm. Usually
youw illfind information abou tthe fuel
grade on thef uel pump. If ther eisnoi dentifica‐
tion on thef uel pump, consult agasstation
attendant.
The fuel grade recommended fory our vehicle is
fo und on thei nstruction label in thef uel filler
fl ap . Note
sonl owoutside temperatures &
WARNING Risk offire and explosion due
to fuel igniting
If yo uh eat fuel sy stem components, e.g. with
ah eat gun or open flame, these components
could be damaged.
Fu el ma yleak out and ignite. Depending on
th et ype of damage, fuel might no tescape
until thee ngine is running. #
Neverh eat fuel sy stem components. #
Consult aqualified specialis tworks hop
to have them alfunction rectified. Re
fill onl ywithc ommerciall yavailable ULTRA-
LO WS ULFUR DIESEL (ULSD, maximum sulfur
content 15ppm), whic hfulfills theA STMD 975
st andard.
The flow properties of diesel fuel ma ybeinade‐
qu ateatl owoutside temp eratures due toparaf fin
separation.
% Malfunctions
resulting from paraf fins epara‐
tion can only be rectified byheating the
entir efuel sy stem. Park thev ehicle in a
heated garage ,for example.
To prev ent malfunctions, diesel fuel with
impr oved flow ch aracteristic sisavailable in the
winter mon ths. Yo uc an obtain fur ther informa‐
tion on this at theg asstatio norf romy our fuel
supplier.
Yo ur vehicle is equipped wit hafuel preheating
sy stem. This additionall yimp rove st he flow char‐
acteristic softhe diesel fuel byabout 14.5 °F
(8 °C). ULTR A-LO WS ULFUR DIESEL can be used
without risk of malfunction down toan outside
te mp eratur eofapproximately 14.5 °F (-1 0°C).
* NO
TEDama gedue togasoline or paraf fin Gasolin
eorparaffinind iese lfue limpair sthe
lubricity of thef uel. This can result in damage
to thef uel injection sy stem, fore xamp le. #
Do no tadd an ygasoline or paraf finto
diesel fuel toimpr oveitsflow character‐
istics. B20 fuels wit
hbio-diesel content
* NO
TEDama gedue toincor rect fuel Continuous use of fuels wi
thbio-diesel con‐
te nt ove r5%( B20 fuels) can leadtof uelfilter 256
Tech nica ldata
clogging
.Deposits ma yalsof ormont he fuel
injector .This ma yreduce thee ngine output.
Unburned fuel can getint ot he oil pan. This
causes thee ngine oil le veltor ise. This can
cause engin emechanical damage.
Obser vethef ollowing points to avoid damage
and reducing thee ngine output: #
Fill up wit hfuels wit hbio-diesel content
of 5% (ULSD) or less, whene verp ossi‐
ble. #
Regular lych ecky our engine oil le velif
yo uu se B2 0fuels on aregular basis. #
Strictl yfollo wthe oil chang einter vals
qu oted in thei nstrument clus tera nd
within your Main tenance Bookl et. #
Use only engine oils and filters
appr ovedfor use in your vehicle. #
Ifyo udon otplan todriv eyour vehicle
fo rs everal weeks, comple tely fill the
fuel tank in ad vance wi thULSD fuel. Fo
rm orei nformation, consult theg asstation
st aff. The identification of fuels wit hbio-diesel
con tent (ULSD or B20) mus tbec lear .Ift he iden‐
tification is no tclear ,don otrefuel .Don otrefuel
wit ha nyfuel sthat ha venotb eena pprove df or
yo ur vehicle.
Ta nk content and fuel reser ve
The total capacity of thef uel tank ma yvary,
depending on thev ehicle equipment.
Ta nk content and fuel reser ve Gasoline engine
Total capacity
M2 74 approx.2 2.5 gal
(85 liters) Diesel engine
Total capacity
OM6 51/OM642 appr ox.2 4.5 gal
(93 liters) Gasoline engine Of whic
hreser ve
fuel
Model switha ppr ox.
22.5 gal(85 l) total
capacity appr
ox.5g al
(1 9l iters) Diesel engine Of whic
hreser ve
fuel
Model switha ppr ox.
24 .5 gal(93 l) total
capacity appr
ox.5g al
(1 9l iters) DEF
Note
sonD EF
Obser vethen otes on operating fluids
(/ page254).
DE Fisaw ater-soluble fluid fort he exhaus tgas
af te rtre atment of diese lengines.
* NO
TEDama gecaused byadditives in
DE Forbyd iluting DEF The DEFe
xhaustgasa ftertreatment sy stem
could be destr oyed bythef ollowing:
R Additives in DEF
R Dilutin gDEF #
Onlyuse DEFina ccordance wit hISO
222 41 . #
Do no tmix additives. #
Do no tdilut eD EF. *
NO
TEDama geand malfunctions caused
by impurities in DEF Impurities in DE
Fresult in thef ollowing:
R Higher emission values
R Damag etothe catalytic con verter
R Engine damage
R Malfunctions in theD EFexhaus tgas
af te rtre atment sy stem #
Avoid impurities in DEF. +
ENVIRONMENTAL
NOTESoiling wi th
DEF DEF
residue cr ystallizes af ters ome time and
st ain thea ffected sur faces. Te
ch nica ldata 257
#
Immedia tely rinse su rfaces that com ein
con tact wi thDEF when filling wit hwater
or remo veDEF wi thad am pcloth and
col dw ater.
If DEF has alread ycrystallized, clean using a
spon geand col dwater. If
yo uo pen theD EFtank ,small amounts of
ammoni avapor ma ybereleased. Do no tinhale
an ya mmonia vapor that ma ybereleased. Fill the
DEF tank only in well-ventilated areas.
DEF consum ption and filling capacity
DEF consum ption
Lik efuel consum ption, DE Fconsum ption is highly
dependent upon driving stylea nd operating con‐
ditions. DEFc onsumption is usuall ywithin a
ra ng eof0a nd10%oft he fuel consum ption. If
necessar y,DEF mu stbe refilled in acco rdance
wit hthe instructions when ther efill messag eis
displa yedint he instrument clus ter.This ma yalso
be necessar ybetwe en thes cheduled mainte‐
nance.
To tal capacity of DEF tank Ve
hicl eT otal capacity
All model s5 .8gal(22 liter s) Exhau
stgasa ftertreatment
The vehicle mus tbeoperated wit hDEF if the
ex haus tgas af tertre atment sy stem is tofunction
cor rectl y.
If yo uo perat ethe vehicle without DEF or with
emissions-rele vant malfunctions ,the legal MOT
appr oval is in validated. The vehicle could be pro‐
hibited from publicr oad usebyan of ficia lordi‐
nance.
It ma ybei mprop eror punishable in some coun‐
tries tooperat eavehicle that uses no DE Forone
th at does no tcompl ywitht he specifications of
th ese operating instructions.
Engine management monitor sthe exhaus tgas
af te rtre atment component sfor compliance with
emiss ions la wsand regulations. If youa ttem ptto
operat ethe vehicle without DEF ,withd iluted DEF
or wit hadiffe re nt reducing agent ,this will be
de tected bythee ngine management sy stem.
Other emissions- releva nt malfunctions ,e.g.
me tering malfunctions or sensor er rors,a re also
de tected and log ged. The engin
emanagement sy stem subsequently
pr eve nts thee ngine being restar teda fter issuing
aw arning message.
Therefor eadd DE Ftank regular lyduring vehicle
operation or ,atthe latest, af terr eceiving thef irst
wa rning messag eviathei nstrument clus ter. Engine oil
Note
sone ngine oil
Obser vethen otes on operating fluids
(/ page254). *
NO
TEEngine damag ecaused byan
incor rect oil filter ,incor rect oil or addi‐
tives #
Do no tuse engine oil soroilfilter sother
th an those whic hmeetthe specifica‐
tions necessar yfor thep rescribed
service inter vals. #
Do no talter thee ngine oil or oil filter in
order toachie velonger chang einter vals
th an presc ribed. #
Do no tuse additives. #
Have thee ngine oil changed af tert he
prescribed inter vals. Mercedes-Benz
recommends having theo il
ch anged at aqualified specialis tworks hop.
Fu rther information on engine oil and oil filter:
R intheMBS pecification sfor operating fluidsat
http://be vo.mercedes-benz.com (b yentering
th ed esignation)
R ataq ualified specialis tworks hop 258
Tech nica ldata
Ad
ditive
* NO
TEEngine damag eduetouse of addi‐
tives in thee ngine oil The use of additional additives in
thee ngine
oil can damag ethe engine. #
Do no tuse an yadditional additives in
th ee ngine oil. Miscibility of engine oil
The benefits of high-quality engine oils are
re
duced bymixing oil.
We recommend that youo nly use engine oil of
th es ame grade and SAEc lassi fication as theo il
fi lled at thel asto ilch ange. If, in exceptional
cases, engine oil of thet ype in thee ngine is not
av ailable, use ano ther appr ovedm ineral or syn‐
th etic engin eoil.
Ve hicles with adiese lengine: ifth eg rade is
no ta vailable, youm ayalso refill wit hengin eoils
acco rding toMB-F reigabe or MB-Appr oval 228.5,
229. 3or2 29.5.Therefill qu antity is then limited
to maximu m1.1US qt (1.0 liter).
Yo um ustthen ha vean oil chang ecarried out at
th ee arlies tpossible opportunit y.
Ve hicles with agasoline engine: ifth eg rade is
no ta vailable, youm ayrefill wit hengin eoils
acco rding toMB-F reigabe or MB-Appr oval 229.3
or AC EA A3/B4. The refill qu antity is then limited
to maximu m1.1US qt (1.0 liter).
Yo um ustthen ha vean oil chang ecarried out at
th ee arlies tpossible opportunit y.
Engine oils ar ediffe re ntiated according to:
R Engine oi lbrand
R Grad e(MB -Fre igabe or MB-Appr oval)
R SAEc lassi fication (viscosity)
Oil chang einter val
The on-boar dcomputer automatically sho ws the
dat eoft he next oil chang easane vent messa ge
on thed ispla y.
Mercedes-Benzr ecommends havin gthe oil
ch anged at aqualified specialis tworks hop. Engine oil capacities Engine
Engine oil
M2 74 Approx. 11.1 qt
(10.5 liters)
OM642 Approx.1 3.2 qt
(12.5 liters)
OM65 1(rear wheel
drive) Appr
ox.1 2.2 qt
(1 1. 5l iters) Information on oil consum
ption
Depending on thed riving style, thev ehicle con‐
sumes amaximum of 1.1USq t(1.0l iter) of
engine oil per 620 mile s(10 00 km).
In thef ollowing cases, oil consum ption ma yalso
exc eed this limit:
R The vehicle is ne w.
R Youu sethev ehicle mostl yunder arduous
conditions.
R Youd rive frequent lyat ah igh engine speed.
Re gular maintenance is aprere quisit efor favo ra‐
ble consum ption figures. Youc an only asses sthe
oil consum ption af teral ong journe y.Chec kthe
oil le velint he engine regularly ,e.g. weekl yor
eve rytime your efuel. Note
sonb rake fluid Obser
vethen otes on operating fluids
(/ page254). &
WARNING Risk of an accident du eto
va por poc kets form ing in theb rake sys‐
tem
The brak efluid con stant lyabsorbs moisture
from thea ir.T his lo werstheb oiling point of
th eb rake fluid. If theb oiling point is tool ow,
va por poc kets ma yformint he brak esystem
when theb rake sa reapplied hard.
This causes theb raking ef fect to be impaired. #
Have theb rake fluid rene we datt he
specified inter vals. *
NO
TEDama getopaint, plastic or rubber
by brak efluid Ther
eisar isk of damag etoproperty if brake
fl uid comes int ocontact wi thpaint, plastic or
ru bber. 260
Tech nica ldata