Flammable materials suc
hasleaves, grass or
twigs ma yignit eift heyc ome int ocontact
wi th:
R hotp arts of thes tationa ryheater exhaust
sy stem
R thee xhau stgasitself
Ther eisar isk offire. #
When thes tationar yheater is swit ched
on, mak esuret hat:
R Hotvehicle parts do no tcome into
contact wit hflammable materials.
R The exhaus tgas can flow out of the
st ationar yheater exhaus tpipe
unhindered.
R The exhaus tgas doe snotcome into
contact wit hflammable materials. *
NO
TEDama getothea uxiliar yheating If
th ea uxiliar yheating is no tused foran
ex tende dperiod of time ,itcan be damaged. #
Switc hthe auxiliar yheating on for
around tenm inutesatl eastonce a
month. *
NO
TEDama getothea uxiliar yheating
due toove rheating If
th eh otair flow is bloc ked, thea uxiliary
heating can overheat and switc hoff. #
Do no tbloc kthe ho tairflow. %
Ve
hicles with modified fuel displa ys:if an
ex tern all yo perated consume risconnec ted
via thec able fort he auxiliar yheater ,this is
no ttaken in toconside ratio nont he "range
re maining" displa yofthe on-boar dcomputer.
In this case, obser vethef uel displa y.The fuel
displa yprovide sthe cur rent le vel.
If yo ua retranspo rting hazardous materials, com‐
ply wit hthe releva nt sa fety regulations. Alw ays
place objects at asufficient dis tance from the
outle topening of thea uxiliar yheating.
Au xilia ryheating worksi ndependentl yofthe
engine and complements thec limat econt rols ys‐
te mint hevehicle. Auxilia ryheating heats thea ir
inside thev ehicle tothes ettemp erature. Hot-water auxiliar
yheater Fu
nction of theh ot-wat er auxiliar yheater
The hot-water auxiliar yheater complements your
ve hicle's climat econt rols ystem, and has a
heater boos ter,auxiliar yheating and auxiliary
ve ntilation function. In addition, thea uxiliary
heating sy stem heats thee ngine coolant topro‐
te ct thee ngine and sa vefuel during thew arming-
up phase. The auxiliar yheatin gheats thea ir
inside thev ehicle tothes ettemp erature. It is not
dependent on theh eat output of ther unning
engine .The auxilia ryheating is operated directly
using thev ehicle's fuel. Forthis reason ,the fuel
ta nk mus thave been filled abo vether eser vefuel
le ve lsot hatthea uxiliar yheating can work.T he
auxilia ryheating automatically adapts its operat‐
ing mode totheo utside temp eratur eand
we ather .Itist herefor epossible that thea uxiliary
heating ma yswitc hfromv entilation toheating
mode or from heating toventilation mode. When
th ee ngine is running ,auxilia ryventilation is not
acti ve.A uxiliar yheating automatically switches
itself of fafter am aximu mof50m inutes.Yo u
canno tuse the" auxiliar yventilation" operating
mode tocool thea ir inside thev ehicle tobelow
th eo utside temp erature. Auxilia ryheating helps
to heat up thev ehicle while thee ngine is running
and at lo woutsid etemperatures.
Operating theh ot-w ater auxiliar yheater dr aws
po we rfromt hevehicle batter y.Therefore, driv ea
re asonabl ylon gd ista nce af terh eating or ventilat‐
ing thev ehicle twice in succession at most.
Au xilia ryheating can be activated onl yattemper‐
atures belo w40°F(4.5 °C).
Switching theh ot-wat er auxiliar yheateron
and of fwitht he button
Re quirements:
R The fuel tank is filled abo vether eser veleve l.
Switching auxiliar yheating on and off #
Toswitc hon:press the003B button. #
Toswitc hoff:press the003B button.
Ac tivatin gthe speci fied temp erature #
Swit chon thei gnition. #
Toswitc hon:press the003B button. #
Toswitc hoff:press the003B button. #
Setthe temp eratur eusing the0082 button. #
Press the003B button.
The redorb lue indicator lam ponthe003B
button goes on or off. 106
Climat econtrol
*
NO
TEDo no tuse diese ltorefuel vehicles
wit hag asoline engine If
yo uh ave accidentally refueled wit hthe
wrong fuel:
R Do no tswit ch th eignition on. 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. #
Consult aqualified specialis tworks hop. #
Have thef uel tank and fue llin es drained
comple tely. *
NO
TEDo no tuse gasoline torefuel vehi‐
cles wit hadiesel engine If
yo uh ave accidentally refueled wit hthe
wrong fuel:
R Do no tswit ch th eignition on. Otherwise,
fuel can enter thef uel sy stem.
Even small amounts of thew rong fuel
could result in damag etothe fuel sy stem
and thee ngine. The repair costs ar ehigh. #
Consult aqualified specialis tworks hop. #
Have thef uel tank and fue llin es drained
comple tely. *
NO
TEDama getothef uel sy stem caused
by ove rfilled fuel tanks #
Only fill th ef uel tank unti lthe pump
nozzle switches off. *
NO
TEFuel ma yspray out when you
re mo vethef uel pum pnozzle #
Onlyfillthef uel tank unti lthe pump
nozzle switches off. *
NO
TEDama getopainted sur faces du eto
fuel #
Do no tspillany fuel on painted sur fa‐
ces. +
ENVI
RONMENTAL NOTEEnvironmental
damag eduetoimproper handlin goffuel If fuels ar
ehandled improperly ,the yp ose a
danger topersons and thee nvironment. #
Do no tallowf uels toruni ntot he sew‐
ag es ystem, thes urface wate rs,t he
ground waterorintot he ground. Re
quirements:
R The vehicle is unloc ked.
R The auxiliar yheating is deactivated.
R The ignition is switched off.
R The front left-hand door is open.
% Do no
tget back intot he vehicle during the
re fueling process. Otherwise, electros tatic
ch arge could buil dupagain.
Obser vethen otes on operating fluids
(/ page247). 1
Fuelfiller flap
2 Fuelfiller cap
% The fuel
filler flap is besid ethe front left-hand
door when vie wedint he direction of tr avel.
The position of thef uel filler cap 00D4is also
shown in theI nstrument Displa y.The ar row
on thef illing pum pspecifies thes ide of the
ve hicle. #
Open fuel filler flap 1. #
Turn fuel filler cap 2coun ter-clockwise and
re mo veit. #
Close all vehicle door stopreve nt fue lvapors
from entering thev ehicle interior. #
Comple tely slide thef iller nec kofthe pump
nozzle int othe tank ,h oo kinp lace and refuel. #
Fillthef uel tank only unti lthe pum pnozzle
switches off. 134
Driving and pa rking
#
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
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
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