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
(/ page247).
DEF is awater-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. 250
Tech nica ldata
#
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
(/ page247). *
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 Te
ch nica ldata 251
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. 252
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
(/ page247). &
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. Te
ch nica ldata 253
#
If paint, plast ic orrubber comes into
con tact wi thbrak efluid, rinse wi th
wate rimmediatel y. Obser
vethen otes on paintwork/matt efinish
paintwor kcare( /pag e194).
Ha ve theb rake fluid replaced regular lyat aq uali‐
fi ed specialis tworks hop.
Only use brak efluid appr ovedbyM ercedes-Benz
in accordance wit hMB-Freigabe or MB-Appr oval
33 1.0.
Fu rther information on brak efluid:
R intheMBS pecification sfor operating fluids
at http://be vo.mercedes-benz.com
R ataq ualified specialis tworks hop Coolant
Note
sonc oolant
Obser vethen otes on operating fluids
(/ page247). &
WARNING ‑Riskoff irea nd injur yfrom
antifreeze
If antifreez ecomes int ocontact wi thhotc om‐
ponent parts in thee ngine compartment, it
ma yignite. #
Allowthe engine tocool down before
adding antif reeze. #
Mak esuret hat no antifreeze spills out
next tothef iller opening. #
Thoroughl yclean of fany antifreeze from
componen tparts befor estartin gt he
ve hicle. *
NO
TEDama gecaused byincor rect cool‐
ant #
Only ad dcoolant that has been pre‐
mixed wit hthe requ ired antifreeze pro‐
te ction. Information on coolant is
available at thef ollow‐
ing locations:
R IntheMBS pecification sfor operating fluids
31 0.1
- Athttp://be vo.mercedes-benz.com
- IntheB eVoa pp
R Ataq ualified specialis tworks hop *
NO
TEOverheating at high outsid etem‐
peratures If an inappropriat
ecoolant is used, thee ngine
cooling sy stem is no tsufficiently pr otected
agains toverheating and cor rosion at high out‐
side temp eratures. #
Alwaysu seac oolant appr ovedby
Mercedes-Benz. #
Obser vethei nstruction sinthe MB
Specifications foro perating fluids3 10.1 . *
NO
TEPaint wo rkdamag eduetocoolant #
Do no tspill coolant on painted sur fa‐
ces. Ha
ve thec oolant regularly replaced at aqualified
specialis tworks hop.
No tethep roportion of anti-cor rosion agent/anti‐
freeze in thee ngine cooling sy stem within thef ol‐
lowing temp eratur eranges:
R Atleas t50% (antifreeze pr otection up to
about -35°F (-37°C))
R Maximum 55 %(antifreez eprotection up to
-49°F (-45°C))
Coolant capacities
Engine coolin gsystem Engine
Coolant
M2 74 approx.3 .0 gal
(1 1. 5l iters)
OM642 approx. 2.6 gal
(1 0l iters)
OM65 1a pprox.2 .5 gal
(9.5 liters) Wi
ndshield washer fluid Note
sonw indshield washer fluid
Obser vethen otes on operating fluids
(/ page247). &
WARNING ‑Riskoff irea nd injur yfrom
windshiel dwashe rconcentrate
Wi ndshield washer concentrat eishighlyflam‐
mable. It could ignit eifitcomes int ocontact
wi th hote ngine component parts or the
ex haus tsystem. 254
Tech nica ldata
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
Check Brake Pads See
Operator's Manual *T
he brakepads ha vereached their wear limit. &
WARNING Risk of accident du etorestricted braking po wer
When theb rake pads ha vereached their wear limit ,the braking
po we rm aybe restricted. #
Driv eonc arefully. #
Have theb rake system checkedi mmediately at aqualified
specialis tworks hop. #
Visit aq ualified specialis tworks hop.
004D
Check Brake Fluid Level *T
her eisn otenough brak efluid in theb rake fluid reser voir. &
WARNING Risk of an accident du etolowbrak efluid le vel
If th eb rake fluid le velist oo lo w,theb raking ef fect and theb rak‐
ing characteristic smaybe impaired. #
Pull overand stop thev ehicle safely as soon as possible,
paying attention toroad and traf ficc onditions. Do no tcon‐
tinue driving under an ycircums tances. #
Consult aqualified specialis tworks hop. #
Do no tadd brak efluid. #
Stop thev ehicle immediately in accordance wit hthe traf ficc on‐
ditions. Do no tcontinu edriving. #
Consul taqualified specialis tworks hop. #
Do no tadd brak efluid.
Activ eBrake Assist Func-
tions Limite dSee Opera-
tor's Manual *A
ctiveBrake Assi stis malfunctioning. #
Visit aq ualified specialis tworks hop.
Active Brake Assist Func-
tions Currently Limited
See Operator's Manual *A
ctiv eBrake Assi stistemp orarily una vailable.
The ambien tcondition sareoutsid ethe sy stem limits (/ page148). #
Driv eon.
When thea mbient conditions ar ewithin thes ysteml imits, the
sy stem will be available again. #
Ifth ed ispla ymessag edoes no tdisappear ,stopina ccordance
wit hthe traf ficc onditions and restar tt he engine.
Radar Sensors Dirty See
Operator's Manual *
The radar sensor sy stem is malfunctioning. Possible causes:
R Dirtont he sensors
R Heavy precipitation
R Extended countr ydriving wi thout other traf fic, e.g. in thed esert
Driving sy stems and driving saf etys yst ems ma ybemalfunctioning
or temp oraril yunavailable.
When thec auses ha vebeen eliminated, thed riving sy stems and
driving saf etys yst ems will be available again.
If th ed ispla ymessag edoes no tdisappear ,proceed as follo ws: Displ
aymessa gesa nd warning and indicator lamps 265
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions #
Stop in accordance wit hthe tra ffic conditions. #
Clean all sensor s(/pag e195). #
Restar tt he engine.
SOS NOT READY *T
he emergency call sy stem is no tavailable.
Po ssible causes fort his include:
R The ignition is switched off.
R The emer gency cal lsyst em is malfunctioning. #
Switc hont he ignition.
If an emergency call is una vailable, amessag etothis ef fect will
appea ronthe multifunction displa yofthe instrument clus ter. #
Visit aq ualified specialis tworks hop.
% Yo
uc an find mor einformation on ther egional availabilit yofthe
emergency call sy stem at :http://www.mercedes-benz.com/
connect_ecall
007A
0025
00E5 Inoperative See Opera-
tor's Manual *
EBD,A BS and ESP ®
arem alfunctioning.
Other driving sy stems and driving saf etys ystems ma yalso be mal‐
functioning. &
WARNING Risk of skidding if EBD, ABS and ESP ®
arem al‐
functioning
If EBD, ABS and ESP ®
arem alfunctioning ,the wheels can lock
when braking and ESP ®
canno tcarry out vehicle stabilization.
The steering capability and braking characteristic sarethus
se verely impaired .The brakin gdista nc einane mergency brak‐
ing situation can increase. In addition, other driving saf etys ys‐
te ms ar eswitched off. #
Driv eonc arefully. #
Have theb rake system checkedi mmediately at aqualified
specialis tworks hop. #
Driv eonc arefully. #
Consult aqualified specialis tworks hop immediatel y.
00E5 Inoperative See Opera-
tor's Manual *
ESP ®
is malfunctioning.
Other driving sy stems and driving saf etys yst ems ma yalso be mal‐
functioning.
The brak esystem continues working wit hthe normal ef fect. The
braking dis tance ma yincrease in eme rgency braking situations. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning ,ESP ®
canno tcarry out vehicle stabili‐
zation .Inaddition ,other driving saf etys ystems ar eswitched off. #
Driv eonc arefull y. #
Have ESP ®
ch eckedataq ualified specialis tworks hop. 266
Displa ymessages and warning and indicator lamps
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
00CE
00B0
á
Currently Unavailable
Camera Dirty *
The camer aviewisr estricted. Possible causes:
R Dirtont he windshield in thec amera's field of vision
R Heavy precipitation or fog
Driving sy stems and driving saf etys ystems ma ybem alfunctioning
or temp orarily una vailable.
When thec auses ha vebeen eliminated, thed riving sy stems and
driving saf etys ystems will be available again.
If th ed ispla ymessag edoes no tdisappear: #
Stop in accordance wit hthe tra ffic conditions. #
Clean thew indshield. #
If necessar y,consult aqualified specialis tworks hop. Currently Unavailable
RadarS
ensors Dirty *
The radar sensor sy stem is malfunctioning. Possible causes:
R Dirtont he sensors
R Heavy precipitation
R Extended countr ydriving wi thout other traf fic, e.g. in thed esert
The following sy stems ma ybeaffected:
R ActiveD ista nce Assi stDISTRONI C(/ page 152)
R Blind Spo tAssis t(/pag e157)
R ActiveB rake Assi st (/ pag e148)
Driving sy stems and driving saf etys ystems ma ybem alfunctioning
or temp orarily una vailable.
When thec auses ha vebeen eliminated, thed riving sy stems and
driving saf etys ystems will be available again.
If th ed ispla ymessag edoes no tdisappear: #
Stop in accordance wit hthe tra ffic conditions. #
Clean all sensor s(/pag e195). #
Restar tt he engine. #
If necessar y,consult aqualified specialis tworks hop.
Active Distance Assist
Now Available *A
ctiv eDista nce Assi stDISTRONI Cisoperationa laga in and can be
acti vated( /pag e153).
00D9 Off *T
he HOLD function has been deactivated because thev ehicle is slip‐
ping or an activation condition has no tbeen met. #
Reactivat ethe HOLD function later on or checkt he HOLD func‐
tion's activation conditions (/ page154).
Blin dSpotA ssist Inoper-
ative *B
lind Spo tAssis tism alfunctionin g(/ pag e157). #
Visit aq ualified specialis tworks hop.
Blind Spot Assist Trailer
Not Monitored *W
hen youe stablish an electrical connection wit hthe trailer ,Blind
Spo tAssis twillremain available but thea reab eside thet railer will
no tbem onitored. The function of Blind Spo tAssis tmaybe restric‐
te dasar esult (/ page157). Displ
aymessa gesa nd warning and indicator lamps 269