Diesel pa
rticulat efilter Note
sonr egeneration &
DANG ER Risk of deat hcause dby
ex haus tgases
Combustio nengines emit poisonous exhaust
ga ses suc hascarbon monoxide. Inhaling
th ese exhaus tgases is hazardou stohealth
and leads topoisoning. #
Neverlea ve thee ngine or ,ifpresent,
th ea uxiliar yheating running in an
enclose dspace wi thout suf ficient venti‐
lation. &
WARNING Risk offire caused byhot
ex haus tsystemp arts
Flammable materials suc hasleaves, grass or
twigs ma yignite. #
Park thev ehicle so that no flammable
material can com eintoc ontact wi thhot
ve hicle components. #
In particular ,donotpar kond rygrass‐
land or har vested grain fields. Re
generation wi thout inter ruption take sa ppr ox.
15 minutes.
If th ev ehicle is predominantl yused fors hor tdis‐
ta nce driving or extende dnon-operationa ltimes,
th is could lead toam alfunctio ninthe automatic
cleaning function fort he diesel particulat efilter.
As aresult, permanent blocking of thed iesel par‐
ticulat efilter ma yoccur .and fuel ma yalso accu‐
mulat einthe engine oil and cause engine failure.
If yo um ainlydriv eshor tdistan ces, yous hould
driv eonaf reew ay or go forac ountr ydrive for20
minutes every500 km (300 miles). This facili‐
ta test he diesel particulat efilter's burn-of fproc‐
ess.
* NO
TEDama gedue tohote xhau stgases During
rege neration, extremely ho texhau st
ga ses escape from thet ailpipe. #
During rege neration, maintai namini‐
mum di stanc eof7ft(2m)f romo ther
objects, e.g. par kedv ehicles. Displaying load
On-boar
dcomputer:
4 Service 5
Consumption Info
The load of thed iesel particulat efilter is dis‐
pla yed. Load displa
yat75% load #
Toexitth ed ispla y:press theb ackb utton on
th el eft-hand side of thes teering wheel.
Bear in mind thef ollowing related topic:
R Operating theo n-boar dcomputer
(/ page120) Batter
ymain switch Note
sont he batter ymain switch *
NO
TEDama getothee lectrical sy stem If
yo ur emo vetheb atter ymain switch, it
could lead tothee lectrical sy stem becoming
damaged. #
Mak esuret hat thei gnition is switched
of fa nd that at leas t15minutes ha ve
passed befor eremoving theb attery
main switch. Otherwise, electrical sys‐
te mc omponents could be dama ged. Yo
uc an use theb atter ymain switc htodiscon‐
nect thec urrent toall your vehicle's consumers.
This will pr event uncontrolle dbattery discha rge
caused byquiescent cur rent consumers.
If yo ur vehicle is equipped wit hanauxiliary bat‐
te ry inthee ngine compartmen torinthe base of
th ec o-driver's seat, youm ustd isconnec tboth
batteries. Onl ythen is thee lectrical sy stem fully
disconnected from thep owe rsupp ly. 12 0
Driving and pa rking
ASS
YSTP LUSs ervice in terv al display Fu
nction of theA SSYSTP LUSs ervice in terv al
display The ASS
YSTP LUSs ervice inter vald ispla yont he
instrument display prov ides informatio nonthe
re maining time or dis tance be fore then ext
service due date.
Yo uc an hide this service messag ebyusingthe
bac kbutton on thel eft-hand side of thes teering
wheel.
Yo uc an obtain fur ther information concerning
th es ervicing of your vehicle from aqualified spe‐
cialis tworks hop, e.g. an authorized Mercedes-
Benz Center. Displaying
thes ervice du edate On-boa
rdcomputer:
4 Service 5
ASSYSTP LUS
The next service due dat eisdisplayed. #
Toexitth ed ispla y:press theb ackb utton on
th el eft-hand side of thes teering wheel.
Bear in mind thef ollowing related topic:
R Operating theo n-boar dcom‐
puter(/ page170) Car
rying out maintenance workregular ly *
NO
TEPrematur ewear thro ugh failur eto
obser veservice due dates Service
workwhic hisn otcar ried out at the
ri ght time or incomple tely can lea dto
inc reased wear and damag etothevehicle. #
Alwayso bser vethep rescribed service
inter vals. #
Alwaysh ave thep rescribed service
wo rkcar ried out at aqualified specialist
wo rkshop. Special service
requ irements The prescribed service inter
valisb ased on nor‐
mal vehicle use. Maintenance workwill need to
be per form ed mor eoften than presc ribed if the
ve hicle is operated under arduous conditions or
increased loads. Examples of arduous operating conditions:
R Regular city driving wit hfrequ ent intermedi‐
at es tops
R Mainly short-dis tance driving
R Frequent operation in mountainous terrain or
on poor road sur faces
R Whe nthe engine is of tenl eftidling forl ong
periods
R Operation in particula rlyd usty conditions
and/o rifair-reci rculation mod eisfrequ ently
used
In these or similar operating conditions, ha vethe
interior air filter ,engin eair cleaner ,engin eoil and
oil filter etc. changed mor efrequ ently .Ifthevehi‐
cle is subjected tohigher loads, thet ires mus tbe
ch eckedm oref requ entl y.Yo uc an obtain fur ther
information at aqualified specialis tworks hop. Batter
ydisconnection periods The ASS
YSTP LUSs ervice in terv al displa ycan
onl ycalculat ethe service due dat ewhen the
batter yisconnected. #
Notedown thes ervice due dat edispla yedon
th eI nstrument Displa ybefor edisconnecting
th eb atter y(/pag e192). Engine comp
artment Opening and closing
theh ood &
WARNING Risk of accident if thee ngine
hood is unlatched while driving
An unloc kede ngin ehood ma yopen up when
th ev ehicle is in motion and bloc kyour vie w. #
Neveru nlatc hthe engine hood while
driving. #
Befor eevery trip, ensur ethat thee ngine
hood is latched. &
WARNING Danger of bu rnsw hen open‐
ing theh ood
If yo uo pen theh ood when thee ngine has
ove rheated or during afireint he engine com‐
partment, youc oul dc om eintoc ontact wi th
ho tg ases or other escaping operating fluids. #
Befor eopening theh ood, allo wthe
engine tocool down. 19 2
Maintenance and care
#
Befor eopening theh ood, allo wthe
engine tocool down. #
Inthee vent of afireint he engine com‐
partment, keep theh ood closed and call
th ef ires ervice. If
yo uh ave tocar ryout an yworkint he engine
compartment, touc ho nlyt he following compo‐
nents:
R Hood
R Engine oil filler openin gcap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap &
WARNING Risk offire and injur yfrom
engine oil
If engine oil comes int ocontact wi thhotc om‐
ponent parts in thee ngine compartment, it
ma yignite. #
Mak esuret hat no engine oil is spilled
next tothef iller opening. #
Allowthe engine tocool of fand thor‐
oughly clean thee ngine oil from compo‐
nent parts befor estartin gt he vehicle. *
NO
TEEngine damag eduetoincor rect oil
fi lter ,incor rect oil or additi ve #
Do no tuse engine oi loranoilfilter with
specifications deviatin gfromt hose
re qu ired fort he prescribed service
inter vals.
Mercedes-Benz recommends using original or
te sted replacement and service parts. #
Do no tchang ethe engine oil or oil filter
in order tosetc hang einter vals longer
th an those prescribed. #
Do no tuse an yadditive. #
Followt he instructions on thes ervice
inter vald ispla yfor changing thee ngine
oil. *
NO
TEDama gecaused byaddin gtoo
muc hengine oil To
om uche ngine oil can damag ethe engine
or thec atalytic con verter. #
Have excess engine oil remo vedata
qu alified specialis tworks hop. Engine OM651
Engine OM642
#
Turn cap 1counter-clockwise and remo veit. #
Adde ngin eoil. #
Replace cap 1and tur nitclockwise until it
engages. #
Chec kthe oil le vela ga in. Chec kusing theo n-
boar dcomputer (/ page195), checkw ith
th eo il dipstic k(/pag e194). Checking
thec oolant le vel &
WARNING Risk of bu rnsf romh otcom‐
ponent parts in thee ngine compartment
Cer tainc omponents in thee ngine compart‐
ment can be very hot, e.g. thee ngine, the
ra diator and parts of thee xhau stsystem. #
Allowthe engine tocool down and only
to uc hc omponent parts desc ribed in the
fo llowing. 19 6
Maintenance and care
#
Nevertouc hthe danger zone sur round‐
ing movin gcomponent parts ,e.g.t he
ro tatio na reaoft hefan. #
Remo vejewe lrya nd watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of bu rnsf romh otcom‐
ponent parts in thee ngine compartment
Cer tainc omponents in thee ngine compart‐
ment can be very hot, e.g. thee ngine, the
ra diator and parts of thee xhau stsystem. #
Allowthe engine tocool down and only
to uc hc omponent parts desc ribed in the
fo llowing. If
yo uh ave tocar ryout an yworkint he engine
compartment, touc ho nlyt he following compo‐
nents:
R Hood
R Engine oil filler openin gcap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap #
Open theh ood (/ page192). #
Remo vedirtfromw ater drain valve 2 of air
intak ebox1 . Draining
thef uel filter &
WARNING Danger of fire and explosion
due tofuel
Fu els ar ehighly flammable. #
It is essential toavoid fire ,o pen flames,
smokin gand creating spar ks. #
Befor efilling up, switc hoffthee ngine,
and, if applicable, thea uxiliar yheating. &
WARNING Risk offire and explosion due
to fuel
Fu els ar ehighly flammable. Ther eisarisk of
fi re and explosion due tocontact wi thhot
component parts. #
Allowthe engine and thee xhau stsys‐
te mtoc ool down. *
NO
TEEngine damag eduetodela yed
drainag eofthe fuel filter Ve
hicles with adiese lengine: delayed
drainag eofthe fuel filter can lead toengine
damage.
If the 003A indicator lam plights up, drain the
fuel filter immediately. +
ENVIRONMENTAL
NOTEEnvironmental
pollution du etodisposal in anon-envi‐
ro nmental ly-friendly manner #
Dispose of thew ater/fuel mixtur einan
environmentally-friendly manner. OM642 engine
#
Park thev ehicle in asafel ocation and secure
it agains trolling away. #
Switc hoffthea uxiliar yheating
(/ page106). #
Switc hoffthee ngine. #
Open theh ood (/ page192). Maintenance and care
19 9
#
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
Quality and capacity of engine oil
%
The container
softhevarious engine oils are
mar kedw itht he ACEA (Association of Euro‐
pean Automotiv eManufacturers) and/or API
(America Petroleu mInstitu te)c lassifications.
Onl yuse appr oved engine oils that cor re‐
spond totheMBS pecification sfor operating
fl uids and thep rescribed ACEA and/or API
classi fications name dbelow .Engine oil sof
ot her grades ar enotpermissible and can
re sult in thel oss of theN ew Vehicle Limited
Wa rrant y.The use of other engine oils not
appr ovedfor diesel engines can damag ethe
diesel particulat efilter (DPF).
MB- Freigabe orMB-App roval Gasoline engine MB-F
reigabe orMB-
Appr oval
M2 74 229.5Diesel engine
sMB-Freigabe orMB-
Appr oval
OM642/OM65 1228.51,229.3 1,
229.5 1,229.52* *R
ecommended forl owest possible fuel con‐
sum ption (lo westSA Ev iscosity class in ea ch
case ;obser vepossible restrictions of the
appr ovedSAE viscosity classes).
To achie vethel owest possible fuel consum ption,
it is recommended touse thee ngine oil specifica‐
tions mar kedint hetable fort he lo west SAEv is‐
cosity class. Obser veanyp ossible restrictions of
th ea ppr ove dSAE viscosity classes.
If th ee ngine oils lis tedint hetable ar enotavaila‐
ble, youm ayadd amaximum 1.1USqt( 1.0l iter)
of thef ollowing engine oils once only:
R Vehicles with agasoline engine: MB-Frei‐
ga be or MB-Appr oval 229. 3orACEA A3/B4
R Vehicles with adiese lengine: MB-Freigabe
or MB-Appr oval 228.5, 229. 3or229.5
Multig rade engin eoils of thep rescribed SAEc las‐
si fication (viscosity) ma ybeuseda llye ar round,
ta king theo utside temp eratur eintoa ccount. Vi
scosity of thee ngine oil
* NO
TEEngine damag eduetoincor rect
SA Ec lassi fication (viscosity) of the
engine oil If
th eS AE classi fication (viscosity) of the
engine oil added is no tsuitable forp rolonged
lo wo utsid etemperatures, it ma ycause
engine damage.
The temp eratur ereadings of theS AE classi fi‐
cation ar ealway sb ased on fresh oil. Engine
oil ages when driving as aresult of soo tand
fuel residue. The characteristic sofengine oil
de teriorat esignificantl yatlowoutside tem‐
peratures. #
Use an engine oil of thea ppropriat eSAE
classi fication at lo woutsid etempera‐
tures. #
Use oil fora ll-year-round operation. The
temp eratur ereadings of theS AE classi fica‐
tion ar ealway sb ased on fresh oil. The temp era‐
tur ec haracteristics of thee ngine oil, especially at
lo wo utside temp eratures, can de teriorat esignifi‐
cantly due toagin gwhen driving.
Therefore, Mercedes-Ben zrecommends that you
ch ang ethe engine oil befor ethe star toft he cold
season. Onl yuse an appr oved engine oil in the
prescribed SAEc lassi fication fort his purpose. The viscosity indicates
thef lowc haracteristics of
af luid. With rega rd toengine oil, ahigh viscosity
is synonymous wit hthic kliquid and alow viscos‐
ity wit hthin liquid. Depending on theo utside
te mp eratures, select thee ngine oil according to
th eS AE classi fication (viscosity) .The table sho ws
th eS AE classi fications tobe used. The lo wtem‐
peratur echaracteristics of engine oils can de teri‐
orat esignificantl yduring operation due toaging
and soo tand fuel acc retion, fore xamp le.Aregu‐
lar oil chang ewithana pprove dengin eoil in the
appropriat eSAE classi fication is therefore
stro ngly recommended. Te
ch nica ldata 259