
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

%
It is
recommended that ActiveB rake Assi stis
alw aysl efta ctivated. #
Select asetting.
The las tactiv esetting is selected automatically
eve rytime thee ngine is star ted.
Exception :ifthe las tsetting was Off,t heMedium
setting will be automatically activated then ext
time thee ngine is star ted.
Deactivating Activ eB rake Assi st
% It is
recommended that ActiveB rake Assi stis
alw aysl efta ctivated. #
Select Off.
The dis tance warning function and autono‐
mous brakin gfunction ar edeactivated.
The next tim ethe engine is star ted, the Medium
setting will be automaticall yactivated.
% When
ActiveB rake Assi stis deactivated, the
00D4 symbol appears inthes tatus area of
th em ultifunction displa y. Cruise control
Fu
nction of cruise control
Cruise cont rola ccelerates and brakes thev ehicle
automaticall yinorder tomaintain apreviously
st ored speed.
If yo ua ccelerat etoovertake, fore xamp le,the
st ored speed is no tdele ted. If your emo veyour
fo ot from thea ccelerator pedal af tero vertaking,
cruise control will resume speed regulation back
to thes tore ds peed.
Cruise contro lisoperated using thec orrespond‐
ing steering wheel buttons. Youc an stor ea ny
ro ad speed abo ve15 mp h(20 km/h).
If yo uf ail toadap tyour driving style, cruise con‐
trol can neither reduce ther isk of an accident nor
ove rride thel aws of ph ysics. It canno ttak ei nto
account road, weather or traf ficc onditions.
Cruise control is only an aid. Youa re re sponsible
fo rt he dis tance tothev ehicle in front, forv ehicle
speed, braking in good time and fors taying in
yo ur lane.
Displa ysinthem ultifunction display
The status of cruise control and thes tore ds peed
ar es hown in them ultifunction displa y. Displ
ayintheI nstrument Displa y(color display)
1 Cruise cont roliss elected
2 Setspeed gr ay:s peed is stored, cruise con‐
trol is deactivated
3 Setspeed green: speed is stored, cruise con‐
trol is activated
Sy stem limitations
Cruise control ma ybeunable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when theg radient evens out.
On long and steep downhill gradients, yous hould
ch ang edowntoa lowe rgear in good time. Take
particular no teofthis when driving aladen vehi‐
cle. By doing so, youw ill mak euse of the
engine' sbraking ef fect. Thi srelie vest he load on
th eb rake system and pr events theb rake sf rom
ove rheating and wearing tooq uickl y.
Do no tuse cruise control in thef ollowing situa‐
tions:
R In traf fics ituations whe refrequent speed
ch anges ar erequired, e.g. in heavy traf ficor
on winding roads.
R On slippe ryroads. Accele rating can cause the
driv ewheels tolose traction and thev ehicle
could then skid.
R Ifyo ua redrivin gwhen visibilit yispoor.
Operating cruise cont rol &
WARNING Risk of accident du etostored
speed
If yo uc all up thes tore ds peed and this is
lo we rthan your cur rent speed ,the vehicle
decelerates. #
Take intoa ccount thet raffic situation
befor ecallin gupt hestored speed. Re
quirements:
R ESP ®
is activated, but ma ynotinter vene.
R The driving speed is at leas t15m ph
(20 km/h). Driving and parking
151

Ad
justin gADR #
Engag epowe rtake-o ffor acti vate ADR. #
Toincrease: press switch 1. #
Toreduce: press switch 2. Tr
aile roperation Note
sont railer operation &
WARNING Risk of accident‑ and inju ryif
th el oad is exceeded
If yo ue xceed thep ermitted load when using
th er ack, ther acks ystemm aydisconnect
from thev ehicle and endanger other road
users. #
Alwaysc ompl ywitht he permitted load
when using ther ack. &
WARNING Swerving of thev ehicle/
trailer combination due toinc reased
speed
If th ev ehicle/trailer combination swer ves,
yo uc an lose control of it.
The vehicle/trailer combination can even tip
ove r. #
Under no ci rcums tances shoul dyou try
to inc rease thes peed tostra ighten the
ve hicle/trailer combination. #
Reduce speed and do no tcounter-s teer. #
If necessar y,appl ythe brakes. &
WARNING Risk of accident du etothe
brak esystem overheating
If yo ul eave your foot on theb rake pedal
when driving, theb rake system ma yoverheat.
This increases theb raking dis tance and the
brak esystemm ayeve nfail. #
Neveru se theb rake pedal as afootrest. #
Do no tdepress theb rake pedal and the
accelerator pedal at thes ame time
while driving. &
WARNING Danger of accident du eto
unsuitable ball coupling
If yo ui nstall an unsuitable ball coupling, over‐
loading of thet railer hitc hand rear axle will
be ther esult. This is particularly thec ase if
th eb all coupling is relatively long or angled
dif fere ntl y.
The handling characteristic smaybe heavily
impaired and thet railer can become
de tach ed. Ther eisarisk offata linjur y. #
Only ins tallab all couplin gthat meets
th ep ermitted dimension sand has been
designed fort he trailer operation
re qu irements. #
Do no tmodif ythe ball coupling or the
traile rhitch. &
WARNING Risk of accident and injury
du etoani ncorrectl yins talled ball cou‐
pling
If th eb all coupling is no tins talled and
engaged cor rectly ,itm aybecome de tach ed
during tr avel and endanger other road users.
Ther eisar isk offata linjur y. #
Install and secur ethe ball coupling as
described in theb all coupling manufac‐
turer's ins tallation instructions. #
When theb all coupling has been ins tal‐
led, ensur ethat it is cor rectly secu red
befor eevery trip. &
WARNING Risk of accident du etoan
incor rectl yins tal led and secured ball
coupling
If th eb all coupling has no tbeen cor rectly
ins talled and secured, thet railer can become
de tach ed. 16 8
Driving and pa rking

cle documents
tosee them aximum permissible
speed fory our trailer.
At tach onl yana pproved trailer hitc htoyourvehi‐
cle. Use only aball nec kthat has been appr oved
fo ry our vehicle. Further information about availa‐
bilit yand ins tallation of thet railer electrics is
av ailable from an yqualified specialis tworks hop.
The trailer hitc hisone of them ostimp ortant
ve hicle parts forr oad saf ety. Compl ywitht he
instructions on operating, maintaining and servic‐
ing in them anufacturer's operating instructions.
% Yo
ur vehicle's bumper sarenots uitable for
ins talling de tach able trailer towh itch es.
Do no tattac hanyrented traile rtow hitches or
an yo ther de tach able trailer towh itch es tothe
bumpers.
% When using
atrailer ,remember that
PA RKTRONI Cisavailable onl ytoalimited
ex tent, if at all.
% The height of
theb all head will change
depending on thev ehicle's load. In this case,
use atrailer wit haheight-adjus table dr aw‐
bar.
Driving no tes
The maximum permissible speed forv ehicle/
trailer combination sdepends on thet ype of
trailer .Befor esetting off, consult thet railer's
ve hicle documents tosee them aximum permissi‐
ble speed fory our trailer.
Yo ur vehicle will beha vediffere ntl yw ithat railer
re lativ etow ithout atrailer ,and will consume
mor efuel. In thec ase of along and steep
descent, youm usts elec tshif trange 3,2or 1in
good time.
% This also applies if
thec ruise cont rolis
switched on.
Yo uw illthereb ymakeu se of thee ngine' sbraking
ef fect and will no thave tobrak easo ften tocon‐
trol thes peed. This will take some of thes train
of ft he brak esystema nd pr event theb rake sf rom
ove rheating and wearing tooq uickl y.Ifyo un eed
additional braking, depress theb rake pedal inter‐
mittently rath er than continuousl y.
Drivin gtips
If th et railer sw ays, remember thef ollowing
points:
R Do no taccelerat eunder an ycircums tances.
R Do no tcounter steer.
R If necessar y,appl ythe brakes. %
Yo
uc an pr eventthet railer from sw aying and
rock ingbyretrofitting stabilizer bar or trailer
st abilit yprograms. Youc an obtain fur ther
information from an authorized Mercedes-
Benz Center.
When youa redrivin gwithat railer ,compl ywith
th ef ollowing points:
R Maintain agreater dis tance than when driving
without atrailer.
R Avoid braking abruptl y.If possible, brak egen‐
tl yf irst of al lsot hatthet railer closes up
behind your vehicle. Then, increase theb rak‐
ing forc er apidl y.
R The values given fors tart-o ff gradeability
re fertos ea level. When driving in moun tain‐
ous areas, no tethat engine output, and there‐
fo re start-of fgradeability ,will dec rease with
inc reasin galtitude. Coupling/uncoupling
atrailer Coupling
atrailer
* NO
TEDama getothev ehicle batter ydue
to full discharge Charging
thet railer batter yusing thep ower
supply of thet railer can damag ethe vehicle
batter y. #
Do no tuse thev ehicle's po wersupply
to charge thet railer batter y. #
Shif tthe selector le vertop osition 005D. #
Appl ythe vehicle's parking brake. #
Close all thed oors. #
Position thet railer on alevel sur face behind
th ev ehicle.
% The ball head height
changes depending on
th ev ehicle's load. In this case, use atrailer
wit hah eight-adjus table trailer dr awbar. #
Couple up thet railer. #
Establish all electrical and other connections
to thet railer. #
Remo veobject sordevices whic hpreve nt the
traile rfromr olling, e.g. wheel choc ks. #
Release thet railer's parking brake.
% The
vehicle harness has acable connection
to theb rake light indicator lamp.
Obser vethem aximum permissible trailer dimen‐
sions (widt hand length). 17 0
Driving and pa rking

#
If se veraltelephone number shave been
sa ve df or th eentry: select and confir ma
te lephon enumbe r.
The telephon enumbe risdialed.
Ins tead of thes elected telephon enumbe rs,t he
fo llowing displa ysma yappear:
R Please Wait :The application is cur rently start‐
ing .IfnoB luetooth ®
connection tothem obile
phone is es tablished, them enu fora uthoriz‐
ing and connecting amobilephone willbe
displa yedint he multimedia sy stem
(/ page194).
R Updating Data…:T he call listisbeing upda‐
te d.
R Importing Contacts:T he mobile phone's con‐
ta cts, or amemo rymedium's contacts are
being impor ted.
Ac cepting/rejecting acall
When youa recalled, theIncoming Call message
appear sonthe displa y. #
Press 0061toaccep tthe call or 0076to
re ject it.
Yo uc an also accep torreject thec all using the
0061 or0076 buttons on thes teering wheel. Calling up settings on
theo n-boa rdcompu ter On-boar
dcomputer:
4 Settings
The following ent ries can be se tonthe Settings
menu:
R Light
- Setting Instrument lighting
R Vehicle
- Switching Regensensor (Rain sensor) on
and off
R Setting Heating
R Display and Operation
- Switching permanent Display DEV Level
on and off #
Select an entr yand con firm thes election. #
Mak ethe necessar ychanges. Instrument Displa
yand on-boar dcomputer 181

#
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 (/ page214). #
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 (/ page214). Maintenance and care
221

#
Place asuitable collector beneat hdrain hose
2. #
Switc hont he ignition. #
Open drain scr ew1 until thew ater/fuel
mixtur eemerges from drain hose 2.#
Close drain scr ew1 as soon as around
0. 2qt( 0.2l iter) of thew ater/fuel mixtur ehas
been collected.
Af ter30s econds, thee lectrical fuel pump
automaticall ystops thed ischarg eofthe
wate r/fuel mixture. #
Afterd raining, switc hoffthei gnition. #
Dispose of thec ollected water/fuel mixture
in an environmentally responsible manner,
e.g. at aqualified specialis tworks hop. #
Chec kthat drain scr ew1 has been closed.
If th ee ngine is running whil edrain scr ew 1
is open, youw ill lose fuel thro ugh drain hose
2. #
Close theh ood (/ page214). #
003A The indicator lam pdoes no tgoo ut
af te rd raining: drainthe fuel filter again. #
003ATh eindica torlam pd oesn otgo out
af te rt he second draining: consultaquali‐
fi ed specialis tworks hop.
Mercedes-Benz recommends that youh avet he
fuel filter drained at aqualified specialis twork‐
shop. Cleaning and care
Note
sonw ashingthe vehicl einana utomatic
car wash &
WARNING Risk of accident du eto
re duced braking ef fect af terw ashing the
ve hicle
The braking ef fect is reduced af terw ashing
th ev ehicle. #
Aftert he vehicle has been washed,
brak ecarefully while paying attention to
th et raffic condition suntil theb raking
ef fect has bee nfully restored. *
NO
TERisk of damag etothe paintwork
and plastic components If
yo uw ash your vehicle in Touchles sAuto‐
matic Car Wash sy stems that use special
cleaning agents, thec leaning agentsu sed can damag
ethe paintwor korplastic components
of thev ehicle. #
Do no twash thev ehicle in Touchless
Au tomatic Car Wash sy stems that use
special cleaning agents. Mak
esuret hat thea utomatic car wash is suitable
fo rt he size of thev ehicle.
Befor ewashing thev ehicle in an automatic car
wa sh, fold in theo utside mir rors and remo veany
additional antennas. Otherwise, theo utside mir‐
ro rs,a ntennas or thev ehicle itself could be dam‐
aged.
Mak esurea nyadditional antennas ar ere-in stal‐
led and that theo utside mir rors aref ullyf olded
out again when youl eave thea utomatic car
wa sh.
To avo id damag etoyourvehicle, obser vethef ol‐
lowing befor eusing an automatic car wash:
R thes ide windo wsand thes liding windo ware
comple tely closed.
R theb lowe rfor ventilation and heating is
switched off.
R thew indshield wiper switc hisinposition005A.
If th ev ehicle is very dirty ,wash of fexcess dirt
befor ecleaning thev ehicle in an automatic car
wa sh.
% Re
moving thew ax from thew indshield and
th ew iper rubber safter wa shing thev ehicle,
will help avoid smearing and reduce wiper
noise. Note
sonu se ofapowe rwasher &
WARNING Risk of accident whe nusing
high-pressu recleaning equipment wi th
ro und-spr aynozzles
The wate rjet from around-spra ynozzle (dirt
grinder) ma ycaus edamag etotires and sus‐
pension components that is no tvisible.
Component sdamaged in this wa ym ayfail
unexpec tedly. #
Do no tuse high-p ressur ecleaning
equipment wit hround-spra ynozzle sto
clea nyour vehicle. #
Damaged tires or suspension compo‐
nentsm ustber eplaced immediatel y. Ne
veru se ap owe rwashe rinthevehicle interior.
The pressurized watercreated bythep ower 222
Maintenanc eand care

Note
sonc leaning and car eP reve nting damag etothevehicle
Ste ps
R
Clea nthe electrically operated steps
and their housing wit hapower
wa sher.
R Afterc leaning, spr aythel ateral
guides wit hsilicone spr ay.
R Clean thes teps in theb umper wit ha
po we rw ashe r. Do no
tuse oil or grease as alubricant.
Aluminum
dropsides R
Brush down thea luminum dropsides
wit hw ater and aneutral or mild alka‐
line cleaning agent. Do no
tuse abrasiv ecleaning agents to
clea nthe dropsides. Note
soni nterior care &
WARNING Risk of inju ryfrom pla stic
parts breakin goffafte rt he use of sol‐
ve nt-based car eproducts
Ca reand cleaning products con tainin gsol‐
ve nts can cause su rfaces in thec ockpit to
become porous.
When thea irbags ar edeplo yed, plastic parts
ma ybreak away. #
Do no tuse anyc areorc leaning prod‐
ucts containing sol vents toclea nthe
cockpit. &
WARNING Risk of inju ryor deat hfrom
bleached seat belts
Bleaching or dyeing seat belts can se verely
we aken them.
This can, fore xamp le, cause seat belt stotear
or fail in an accident. #
Neverb lea ch or dy eseat belts. Obser
vethef ollowing no tes: Note
sonc leaning and car eP reve nting damag etothevehicle
Seat belts Clean withlukewa rmsoap ywater. R
Do no tuse chemical cleaning
agents.
R Do no tdrythes eat belt byheating
abo ve176°F (80°C )orindirect sun‐
light.
Display Cleanthes urface carefully wi tham icro‐
fi ber clo thand LCD/TFT displ aycare
product. R
Switc hoffthed ispla yand le titcool
down.
R Do no tuse an yother agents.
Plastic trim R
Clean wit hadampm icrofiber clo th.
R Forh eavy soiling: use car eproduct
re commended forM ercedes-Benz . R
Do no taffix sticke rs,f ilms or similar.
R Do no tallowtoc ome int ocontact
wi th cosmetics, insect repellent and
sun creams.
Re alwo od/
trim ele‐
ments R
Clean wit hamicro fiber clo th.
R Blackpiano-lacquer look: clean with
ad am pcloth and soap ywater.
R Forh eavy soiling: use car eproduct
re commended forM ercedes-Benz . Do no
tuse sol vent-based cleaning
agents, polishes or waxes. 226
Maintenance and care