Page 137 of 348

#
Replace fuel filler cap 2and tur nitclock‐
wise.
Yo uw ill hear aclickw hen thef uel filler cap is
close dfully. #
Open thef ront left-hand door. #
Close fuel filler flap 1.
% Ve
hicles with adiese lengine and incor‐
re ct fueling pr otector agains trefueling
wit hgasoline: thef iller nec kisdesigned for
re fueling at diesel filling pumps forp assenger
ve hicles.
% Ve
hicles with adiese lengine without an
incor rect fueling pr otector: refueling pre‐
fe rred at diesel filling pumps forp assenger
ve hicles. Ho wever,yo uc an also refuel at a
diesel filling pum pfor truc ks.
% If
th ef uel tank ha sbeenr un comple tely dr y,
add at leas t1.3gal(5l)off uel. Problems wit
hthe fue land fuel tank Problem
Possible causes/consequences and 0050 0050Solutions
Fu el is leaking from the
ve hicle. The fuel line or
thef uel tank is de fective. #
Apply thep arking brake. #
Switc hoffthee ngine. #
Remo vethek eyfrom thei gnition loc k.
Or ,onv ehicles wit hKEYLESS‑GO: #
Open thed rive r's door.
The on-boar delectronics ar einposition 005A.This cor responds tothe
"k ey remo ved". #
Do no tres tart thee ngine under an ycircums tances. #
Consult aqualified specialis tworks hop.
The engine does not
st art. The fuel
tank ha sbeenr un comple tely dr y. #
Refuel thev ehicle wit hatleast1.3gal(5l)off uel. #
Swit chthei gnition on fora pproxima tely tens econds. #
Startt he engine continuously foram aximu moften seconds until it
ru ns smo othly.
If th ee ngine does no tstart: #
Switc hthe ignition on fora pproxima tely tens econds. #
Startt he engine continuously foram aximu moften seconds until it
ru ns smo othly.
If th ee ngine does no tstart afte rt hree attem pts: #
Consult aqualified specialis tworks hop. Driving and parking
13 5
Page 138 of 348

DEF
Note
sonD EF
* NO
TEWhe nyou open theD EFtank,
small amounts of ammoni avapor may
escape. #
OnlyfilltheD EFtank in well-ventilated
areas. #
Do no tlet DE Fc om eintoc ontact wi th
skin, eyes or clo thes. #
Keep DEFa wayfromc hildren. *
NO
TEDo no tinges tDEF. If DEF is swallo
wed: #
Immediatel yrins eo utyour mout hthor‐
oughly. #
Drink plenty of water. #
Seek medica lattentio nimmediately. *
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. *
NO
TEDEF residue cr ystallizes af ter
some time. Remo veDEF residue. #
Immediatel yrins es urfaces that com ein
con tact wi thDEF when filling with
wate r. #
DEF can also be remo vedw ithad amp
clo thand col dwater. #
If DEF has alread ycrystallized, clean
using aspon geand col dwater. DE
Fisa liqu id urea solutio nused fore xhau stgas
af te rtre atment of diese lengines. In order fort he
ex haus tgas af tertre atment tofunction properly,
only use DEF in accordance wit hISO 222 41 .
DEF ha sthe following properties:
R non-t oxic
R colorless and odorless
R non-flammable
DE Fa vailability:
R youc an ha veDEF adde dbyfasts ervice at a
qu alified specialis tworks hop, e.g. an author‐
ized Mercedes-Benz Center.
R DEF is available at numerous gass tations via
DE Ffilling pumps.
R alternatively ,DEF isavailable at qualified spe‐
cialis tworks hops, e.g. an authorized
Mercedes-Benz Center ,and at numerous gas
st ations as aDEFrefill canis terorD EFrefill
bottle.
% DE
Ffreezes at atemperatur eofapprox‐
imatel y12.2 °F (-1 1°C).T he vehicle is equip‐
ped wit haDEF preheating sy stem at thef ac‐
to ry.T hism eans that winter operation is also
ensured fort emperatures belo w12.2 °F
(-1 1° C).Ify ou add DEF at temp eratures
belo w12.2 °F (-1 1°C),the DEF le velint he
instrument clus term aynotbed isplayedc or‐
re ctly .Ift he DEF is frozen, driv efor at least
20 minu tesa nd then par kthe vehicle fora
minimu mof30s econds, so that thel evel is
cor rectl yd ispla yed. In extreme winter condi‐
tions, thet ime needed todetect thet op-up
amount ma ybeconsiderably longer .Parkt he
ve hicle in awarmg arag etos peed up this
process.
% Ensur
ethe connection between ther efill con‐
ta iner and vehicle filler nec kdoes no tdrip. 13 6
Driving and pa rking
Page 139 of 348

Callin
gupt he DEF le velg auge
On-board computer:
4 Service #
Select DEFand confirm.
The DEF le vela nd theD EFrang ea ppea r. Instrument Displa
ywithc olo rdisplay
1 DEF le vel Instrument Displa
ywithb lack and whit edis‐
play
1 DEFlevel
Re filling DEF
* NO
TEEngine damag eduetoDEF being
in thef uel #
DEFm ustn otbe used tofill th ef uel
ta nk. #
Only us eDEFtofill th eD EFtank. #
Do no toverfill theD EFtank. *
NO
TEContamination of thev ehicle inte‐
ri or due toDEF leakage #
Aftera dding, careful lyclos ethe DEF
re fill con tainer. #
Avoid car rying DE Frefill container sper‐
manentl yinthevehicle. Re
quirements:
R The ignition is switched off.
The following messages that appear in succes‐
sion in them ultifunction displa yindicat ethat you
need torefill th eD EFtank:
R Refil lAdditive See Operator's Manual
The DEF tankhasfallen belo wthe firs tw arn‐
ing thre shold.
R Refill Additive Starts until Emerg. Op.: XXX
See Operator's Manual
The DEF supply has fallen belo wthe reser ve
mar k.
Af tert he messag eappear sfor thef irst time,
th er emaining DEF suppl ywill las tfor appr ox‐
ima tely 1,200 mi (1,900 km) and youc an
st ar tt he engine afurther 16 times. The num‐
be rofr emaining engine starts XX(16to1)is
shown in them essag eevery time thee ngine
is star ted.
R Refill Additiv eEmergenc yOp.: XXX mph See
Operator's Manual
Yo uc an only driv ethe vehicle at amaximum
speed of 5mph (8 km/h).
Re fill qu antity:
Wi th ap romp tint he displa ya tlea st 2l
Wi thout apromp tint he displa yatlea st 8l Yo
uc an also ha vetheD EFleve ld ispla yed
( / pag e137).
Opening theD EFfiller cap on filler caps that
ar en otloc kable #
Open theh ood. Driving and parking
137
Page 140 of 348
#
Turn DEF filler cap 1coun ter-clockwise and
re mo veit.
Opening theD EFfiller cap on loc kable filler
caps #
Open theh ood. #
Take tool 4 foru nlocking DEF filler cap 1
from thev ehicle tool kit. #
Pull co ver3on DEF filler cap 1up, turn
90° and release. #
Inser ttool 4in holes 2of DEF filler cap
1. #
Turn DEF filler cap 1coun ter-clockwise and
re mo veit. Preparing
theD EFrefill canis ter Va
riant 1 Va
riant 2 #
Unscr ewthec ap on DEFr efill canister1. #
Screw disposable hose 2ontothe opening
of DEF refill canis ter1 until hand-tight. 13 8
Driving and pa rking
Page 141 of 348

Re
filling DEF Va
riant 1 Va
riant 2 #
Screwd isposable hose 2ontothe filler neck
of thev ehicle until hand-tight. #
Liftupa nd tip DEF refill canis ter1.
The filling proces sstops when theD EFtank is
comple tely full.
DEF refill canis ter1 can be remo vedw hen it
has been onl ypartiall yemp tied. #
Unscr ewdisposable hose 2and close DEF
and refill canis ter1 inreve rseo rder. #
Switc hont he ignition foratl east 60 seconds. #
Startt he vehicle.
% Av
oid storing DEF container spermanent lyin
th ev ehicle.
DEF refill bottle
Onl yscrew theD EF ref ill bottle hand-tigh tonto
th ef iller openin ginthe engine compartment. It
ma yotherwise be damaged. DEF
refill bottles 1can be obtained at man ygas
st ations or at aqualified specialis tworks hop.
Re fill bottles without athreadedc ap offerno
ove rfill pr otection .DEF mayleak out as aresult
of ove rfilling. Mercedes-Benz of fers special refill
bottles wit hathreadedc ap.Youc an obtain this
from an authorized Mercedes-Benz Center. #
Unscr ewthep rotectiv ecap from DEFr efill
bottle 1. #
Place DEFr efill bottle1as shown on filler
opening 2and scr ewit on clockwise until
hand-tight. #
Press DE Frefill bottle 1towa rdsf iller open‐
ing 2.
The DE Ftank is filled. This could takeupto
one minute.
% When
theD EFrefill bottle is no longer
pressed down, filling stops. The bottle can be
re mo vedw hen it has been onl ypartially emp‐
tied. #
LetgoofD EFrefill bottle 1. Driving and parking
13 9
Page 142 of 348

#
Turn DEF refill bottle 1coun ter-clockwise
and remo veit. #
Screwt he pr otectiv ecap ont oDEFrefill bot‐
tle 1 again.
Fi lling procedur ewitht he pum pnozzle of an
DEF filling pump #
Inser tthe pum pnozzle int othe filler nec kand
add DE F.When doing so, do no toverfill the
DEF tank .You can also use an DEF filling
pum pfor truc ks.
Closing theD EFfiller cap on filler caps that
ar en otloc kable #
Afterf illing theD EFtank ,p lace DEF filler cap
1 onthef iller nec kand tigh tenitc lock wise. #
Turn theD EFfiller cap until thel ette ring is
legible and horizontal.
The filler nec kisonlyl oc kedc orrectly when
th is is thec ase. #
Close theh ood. Closing
theD EFfiller cap on loc kable filler
caps #
Afterf illing theD EFtank ,p lace DEF filler cap
1 onthef iller nec kand tigh tenitc lock wise. #
Remo vetool 4 from DEF filler cap 1and
st or eitint hevehicle tool kit. #
Pull co ver3on DEF filler cap 1upover
holes 2of DEF filler cap 1,turna nd
re lease. #
Turn DEF filler cap 1.
If DE Ffiller cap 1turns freel y,theD EFtank
is closed. Park
ing Pa
rking thev ehicle &
WARNING Risk offire caused byhot
ex haus tsystemp arts
Flammable material suc hasleaves, grass or
twigs ma yignit eift heyc ome int ocontact
wi th hotp arts of thee xhau stsystem or
ex haus tgas flow. #
Park thev ehicle so that no flammable
material can com eintoc ontact wi thhot
ve hicle components. 14 0
Driving and pa rking
Page 143 of 348

#
In particula r,do no tparkond rygrass‐
land or har vested grain fields. &
WARNING Risk of accident and inju ry
due tochildren lef tunat tende dint he
ve hicle
If ch ildren ar eleftu nat tende dint hevehicle,
th ey could:
R Ope ndoors,t hereb yendangering other
persons or road users.
R Getout and be stru ck byoncomin gtraf‐
fi c.
R Ope rate ve hicle equipment and become
trapped, fore xamp le.
In addition ,the children could also se tthe
ve hicle in motion, fore xamp leby:
R Releasing thep arking brake.
R Changing thet ransmission position.
R Startin gthe vehicle. #
Neverlea ve children unat tende dint he
ve hicle. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle. #
Keep thev ehicle keyo ut of reac hof
ch ildren. *
NO
TEDama getothev ehicle or thed rive‐
train due torolling away #
Alwaysp arky our vehicle safely and
according tolegal requirements. #
Alwaysp roper lysecur ethe vehicle
agains trolling away. &
WARNING Risk of accident and inju ryif
parkin gbrake is no tapplied
If yo up arkt he vehicle wit hthe transmission
in par kposition 005Dand thep arking brak eis
no te ngaged, thev ehicle ma yroll away.
Engaging pa rkposition 005Dis no tafully ade‐
qu ater eplacement fort he parking brake.
Ther eisar isk of accident and injur y.#
Secu rethev ehicle agains trolling away
as desc ribed belo w. Obser
vethef ollowing points toensur ethat the
ve hicle is properly secured agains trolling away
unin tentionally: #
alwa ys appl ythe parking brake. #
Vehicles with automatic transmission:
engag etransmission position 005D. #
On uphill or downhill inclines: turnthe
front wheels towa rdst he curb. #
On uphill or downhill inclines: securethe
re ar axle wit hachockorano bject without
shar pedges.
% Yo
uc an operat ethe side windo wsforf ive
minutes af tery ou ha veswitched of fthe vehi‐
cle. Manual parking brake
Applying/releasing
theh andbrak elever &
WARNING Risk of skidding or an acci‐
dent bybraking wit hthe parking brake
If yo uh ave tobrak eyour vehicle wit hthe
parking brake, theb raking dis tance is consid‐
erab lylonger and thew heels ma yloc k. There
is an increased risk of skidding and/or acci‐
dent. #
Only brak ethe vehicle wit hthe parking
brak eift he service brak ehasfailed. #
Inthis case, do no tappl ythe parking
brak ewitht oo muc hforce. #
Ifth ew heels loc k,immediately release
th ep arking brak easmuchasr equired
fo rt he wheels totur na gain. &
WARNING Risk offire and an acciden tif
th ep arking brak eisnotreleased
If th ep arking brak eisnotfull yreleased when
driving, thef ollowing situations can occur:
R The parking brak ecan overheat and cause
af ire
R The parking brak ecan lose its holding
function #
Comple tely release thep arking brake
befor edriving off. The brak
elights do no tlight up when youb rake
th ev ehicle wit hthe parking brake. Driving and parking
141
Page 144 of 348

Gene
rally ,y ou ma yonlya ppl ythe parking brake
when thev ehicle is stationar y. #
Toappl ythe parking brake: pullhandbrake
le ver 1up as farast he las tpossible de tent.
Whe nthe engine is running ,the 0049
and 0024 (USA) or 0024(Canada) indicator
lamps in theI nstrument Displa ylight up. If
th ev ehicle is in motion, awarning tone
sounds.
% In
vehicles wit hafolding handbrak eleve r,
yo uc an then press handbrak elever 1 down
as farasitw illg o. #
Torelease thep arking brake: onvehicles
wit haf olding handbrak eleve r,firs tp ullh an d‐
brak elever 1 up as farasitw illg o. #
Guide handbrak elever 1 down toas farasit
willg o.
The 0049 and0024 (USA) or 0024(Canada)
indica torlamps in thei nstrument displa ygo
out.
Fo lding theh andbrak elever up or down (only
in vehicles with afolding handbrak elever)
Re quirements:
R The handbrak eleve risa pplied. #
Tofold down theh andbrak elever: push the
handbrak elever down as farasitw illg o. #
Toraise theh andbrak eleve r:pull theh and‐
brak elever up as farasitw illg o. Pe
rforming emer gency braking with theh and‐
brak elever If, in
exceptional cases, thes ervice brak efails,
yo um ayuse thep arking brak etoperform emer‐
ge ncy braking. #
Eme rgency braking: press and hold release
button 2and carefull ypull brak elever 1. Electric parking brake
Information on
thee lectric pa rking brake &
WARNING Risk of accident and injury
du etoc hildren lef tunat tende dint he
ve hicle
If ch ildren ar eleftu nat tende dint hevehicle,
th ey could:
R Ope ndoors,t hereb yendangering other
persons or road users.
R Getout and be stru ck byoncomin gtraf‐
fi c.
R Ope rate ve hicle equipment and become
trapped, fore xamp le.
In addition ,the children could also se tthe
ve hicle in motion, fore xamp leby:
R Releasing thep arking brake.
R Changing thet ransmission position.
R Startin gthe vehicle. #
Neverlea ve children unat tende dint he
ve hicle. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle. #
Keep thev ehicle keyo ut of reac hof
ch ildren. 14 2
Driving and pa rking