SmartK
ey Note
sonr adio connection softhekey &
DANG ER Risk of fata linjur ytop ersons
wit hm edical devices from thee lectro‐
magnetic radiation of thes tart/s topb ut‐
ton
Pe rsons wit hmedical devices, e.g. pacemak‐
er sord efibrillators:
When youo perat ethe start/ stop button, a
ra dio connection is es tablished between the
ke ya nd thev ehicle.
The electromagnetic radiation can af fect the
functionality of amedical device. #
Befor eoperating thev ehicle, consult
yo ur doc torort he manufacturer of the
medica ldevice abou tany possible
ef fects of emissions from suc hsystems. De
tection rang eofa ntenna of KEYLESS-
ST AR Tfunction Overvie
wofkeyfunctions &
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 getothek eycaused bymag‐
netic fields #
Keep thek eyaway from strong mag‐
netic fields. 1
Tolock
2 Battery checkl amp
3 Tounlo ck
4 Tounlo ckcargo compa rtment (sliding doors
and rear-en ddoors)/ tounlo ckand open/
close electric slidin gdoors
5 Emer gency key
The key's factor ysetting enables youtoc entrally
loc ka nd unloc kthe following components:
R thed rive r's door and thec o-driver's door
R thes liding doors
R ther ear-end doors
% If
yo udon otopen thev ehicle within appr ox‐
imatel y40s econds of unlocking, thev ehicle
will loc kagain and anti-thef tprotection will
be armed again. 46
Opening and closing
Re
quirements:
R ACR2 0323Vc ell battery
Mercedes-Ben zrecommends that youh ave the
batter yreplaced byaq ualified specialis twork‐
shop. #
Remo vethee mer gency key( /pag e47). Example ima
ge #
Press release button 2down full yand slide
co ver 1forw ard. #
Remo vebatter ycompartment 3and remo ve
th ed ischar gedb atter y. #
Inser tthe ne wbatter yintob atter ycompart‐
ment 3.O bservethep ositiv epole marking
in theb atter ycompartmen tand on theb at‐
te ry. #
Inser tbatter ycompartment 3. #
Replace co ver1sothat it engages. #
Slidethe emergency keyinc ompletely until it
en gage s( /pag e47). Problems with
thek ey Problem
Possible causes/consequences and 0050 0050Solutions
Yo uc anno tloc koru nlock
th ev ehicle an ymore. Po
ssible causes:
R thek eybat tery iswe ak or dischar ged
R ther eisi nterfere nce from apowe rful source of radio wav es
R thek eyis defective #
Chec kthe batter yusing theb atter ychec klam pand replace if neces‐
sar y(/pag e47). #
Use thee mer gency keytou nlockand loc kthe vehicle (/ page47). #
Have thek eycheckedataq ualified specialis tworks hop.
Yo uh ave lostak ey. #
Have thek eydeacti vatedataq ualified specialis tworks hop. #
If necessar y,ha ve them echanical loc ksreplaced. 48
Openin gand closing
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
Flat tire
Note
sonf lat tires &
WARNING Risk of an accident whe ndriv‐
ing wi thaflat tire
Af lat tir egreatl yimp airsd rivin gc haracteris‐
tics, as well as steering and braking. #
Do no tdrive wit haf lat tire. #
Remo vethef lat tir eand ins tallthe
spar ewheel or consult aqualified spe‐
cialis tworks hop. Depending on
your vehicle's equipment, in the
eve nt of aflat tir eyou ha vethef ollowing possibil‐
ities:
R Youc an call breakdown assis tance via the
breakdown assis tance cal lbuttonint heove r‐
head control panel (/ page176).
R Chang ethe wheel (/ page234). Batte
ry Note
sont he12Vb attery &
WARNING Risk of an accident du eto
wo rkcar ried out incor rectly on theb at‐
te ry
Wo rkcar ried out incor rectl yont he battery
can, fore xamp le, lead toas hor tcircuit .This
can lead tofunction restrictions in saf ety-re l‐
ev ant sy stems, fore xamp lethel ighting sys‐
te m, ABS (anti-loc kbraking sy stem) or ESP ®
(Elect ronic Stabilit yProgram). The operating
saf etyofy ourvehicle ma yberestricted.
Yo uc oul dlose control of thev ehicle in the
fo llowing situations:
R when braking
R inthee vent of ab rupt steering maneuvers
and/or when thev ehicle's speed is not
adap tedtot heroad conditions #
Inthee vent of ashortcircui tora simi‐
la ri ncident, contact aqualified special‐
is tw orks hop immediately. #
Do no tcontinue driving. #
Alwaysh ave workon theb atter ycarried
out at aqualified specialis tworks hop. R
Further information on ABS (/ page146)
R Further information on ESP ®
(/ page147) Mercedes-Benz
recommends that youh avet he
12 Vb atter yreplaced at aqualified specialist
wo rkshop, e.g. at an authorized Mercedes-Benz
Center.
Should youw ant toreplace theb atter yyourself,
obser vethef ollowing information:
R Alwaysr eplace afaulty batter ywithab attery
whic hfulfills thev ehicle's specific require‐
ments.
R Carryove rdetachable parts suc hasthevent
hose, elbo wfittin gort erminal co verfromt he
batter ytober eplaced.
R Mak esuret hat thev ent hose is alw aysc on‐
nected toits original openin gonthe battery
side.
Ins tallthe existin gorn ewlysupplied stop
plugs.
Otherwise, gases or batter yacid could
escape.
R Mak esuret hat thed etachable parts ar econ‐
nec tedint he same wayasb efore.
Fo rs afet yr easons, Mercedes-Benz recommends
th at youo nly use bat teries that ha vebeen tested
and appr ovedfor your vehicle byMercedes-Benz.
These batteries pr ovide inc reased impact pr otec‐
tion topreve ntvehicle occupants from suf fering
aci db urns should theb atter ybed amaged in an
accident. &
WARNING Risk ofexplosion due toelec‐
tros tatic charge
Electros tatic charge can cause spa rksw hich
ma yignit ethe highl yflammable gasm ixture
in theb atter y. #
Todischar geanye lectrostatic charge
th at ma yhave built up, touc ht he me tal
ve hicle body befor ehandling theb at‐
te ry. The highly
flammable gasm ixtur eisc reated while
th eb atter yisc harging and when jump-s tarting. &
WARNING Danger of chemical burns
from theb atter yacid
Batter yacid is caustic. #
Avoid contact wit hthe skin, eyes or
clo thing. #
Do no tlean overthe batter y. #
Do no tinhal ebattery gases. Breakdown assis
tance 201
#
Keep children away from theb atter y. #
Immedia tely rinse batter yacido ffthor‐
oughly wit hplenty of clean waterand
seek medica lattention immediately. +
ENVIRONMENTAL
NOTEEnvironmental
damag ecaused byimproper disposal of
batteries Bat
teries contain pollutants. It is
illegal todispose of them wit hthe household
ru bbish. #
Dispose of batteries in an
environmen tallyr esponsibl emanner.
Ta ke dischar gedb atteries toaq ualified
specialis tworks hop or toac ollection
poin tfor used batteries. If
th e12Vb atteryhastobe connected, con tact a
qu alified specialis tworks hop.
Obser vethes afet yn otes and pr otectiv emeas‐
ures when handling batteries. Risk of
explosion Fire, open
flames and smokin gare
prohibited when handlin gthe batter y.
Av oid creating spar ks. Electrolyte
or batteryacid is cor ro‐
sive. Avoid contact wit hthe skin, eyes
and clo thing. Wear suitable pr otective
clo thing, in particular glove s, an apron
and asafet ym ask. Immedia tely rinse
electrolyt eacids plashes of fwith
clea nwater .Ifn ecessar y,seek medi‐
cal advice. We
areyep rotection. Ke
ep children at asafed ista nce. Obser
vethese Operating Instructions.
If yo udon otuse thev ehicle foral ong period or
driv eshor tdista nces regular ly:
R Connec tthe batter ytoachargerrecommen‐
ded forM ercedes-Benz.
R Consult aqualified specialis tworks hop todis‐
connect theb attery St
arting assistanc eand chargin gthe star ter
battery #
Alwaysu sethej ump-s tart connection in the
engine compartmen tfor startin gassis tance
and when chargin gthe batter y.
* NO
TEDamaging theb atter ythrough
ove rvoltage When
chargin gusingab atterycharger with‐
out amaximu mcharging voltage, theb attery
or thev ehicle electronics ma ybedamaged. #
Onlyuse batter ycharger switham axi‐
mum chargin gvoltag eof1 4.8V. &
WARNING Risk ofexplosion from hydro‐
ge ng as igniting
Ab atter ygenerates hydrogen gasd uring the
ch argin gprocess. If ther eisas hortcircuit or
spar ksstar ttof orm, ther eisad anger of the
hy drogen gasigniting. #
Mak esuret hat thep ositiv eterminal of
th ec onnected batter ydoes no tcome
int oc ontact wit hvehicle parts. #
Neverp lace me talo bject sort ools on a
batter y. #
When connectin gand disconnectin gthe
batter y,yo um usto bse rvet he described
order fort he batter yclamps. #
When giving startin gassistance, alw ays
mak esuret hat youo nly connec tbattery
te rm inals wit hidentical polarity. #
During startin gassis tance, youm ust
obse rvet he described order forc on‐
necting and disconnecting thej umper
cables. #
Do no tconnect or disconnect theb at‐
te ry cla mp sw hile thee ngine is running. 202
Breakdown assis tance
&
WARNING Risk ofexplosion during
ch argin gprocess and startin gassis tance
During thec harging process and starting
assis tance, theb atter ymayrelease an explo‐
siv eg as mixture. #
Avoid fire ,o pen flames ,creating spar ks
and smoking. #
Mak esuret hat ther eiss ufficient venti‐
lation du ring thec harging process and
during startin gassis tance. #
Do no tlea no verab atter y. &
WARNING Risk ofexplosion from afro‐
zen battery
Ad ischar gedb atter ymayfreeze at temp era‐
tures slightl yabove or belo wfreezing point.
During startin gassis tance or batter ycharg‐
ing, batter ygas can be released. #
Alwaysa llowab atterytot hawb efore
ch argin gitorp erform ing startin gassis‐
ta nce. If
th ew arning /indicator lamps do no tlight up in
th ei nstrument displa yaround or belo wfreezing
point, it is very likel ythat thed ischarged battery
has frozen.
In this case, obser vethef ollowing points:
R Do no tgivet he vehicle startin gassis tance or
ch arge theb attery
R The service lif eofabatterythat has been
th awe dmaybe reduced drastically
R The start-up behavior ma ydeteriorate, partic‐
ularly at lo wtemperatures
R It is recommended that youh ave athawed
batter ychec kedataq ualified specialis twork‐
shop
* NO
TEDama gecaused bynume rous or
ex tende dattempts tostar tt he engine Numerous or
extende dattempts tostar tt he
engine ma ydamag ethe catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extende dattem pts
to star tt he engine. When jump-s
tarting and chargin gthe batteries,
obser vethef ollowing points:
R Onlyuse undamaged jumper cables/ charging
cable swithas ufficient cross-sectio nand
insula tedt erminal clamps
R Non-insulated parts of thet erminal clamps
mus tnotcom eintoc ontact wi thother me tal
parts while thej umper cables/charging
cables ar econnected totheb attery/jump-
st ar tc onnectio npoint
R The jumper cables/chargin gcable smustn ot
com eintoc ontact wi thanyp arts whic hmay
mo vewhen thee ngine is running
R Alwaysm akes uret hat neither youn orthe
batter yiselectros tatically charged
R Alwaysk eep away from fire and open flames
R Do no tlean overab attery
R When charging: only use abatter ychar ger
th at has been tested and appr ovedby
Mercedes-Benza ndread theo perating
instruction sfor your charge rb efor echarging
th eb atteries
Obser vethea dditional following point sduring
st artin gassis tance:
R Startin gassis tance ma yonly be pr ovided
using batteries wit hanominal voltag eof12V
R The vehicles mus tnot to uche acho ther
R Vehicles with agasoline engine: only per‐
fo rm startin gassis tance when thee ngine and
ex haus tsystema recold #
Vehicles with abatter ymain switch: check
whe ther theb atter ymain switc hisinserted
( / pag e120) #
Secur ethe vehicle using thep arking brake. #
Vehicles with automatic transmission:
shif tthe transmission toposition 005D. #
Switc hoffthei gnition and all electrical con‐
sumers. #
Open theh ood (/ page185). Breakdown assi
stance 203
#
Toremo ve: unscr ewscrews 3and remo ve
trim 2. #
Remo vefloor co vering 1. #
Toinstall: insertfloor co vering 1 and align
it at theb ase of thed rive r's seat and at the
door sill. #
Put trim 2in place and scr ewscrews 3
bac kin. Disconnecting
thes tar terb attery *
NO
TEDama getoelectrical assemblies Elect
rical assemblies could be damaged if the
st ar terb atter yisd isconnected whil ethe
engine is running. #
Switc hoffthee ngine. Then, release the
batter yclamps of thes tarter batter y. #
Alwaysd isconnect thes tarterb atter yin
th eb atter ycase in thel eftf ootwell firs t.
Otherwise, electrica lassemblies, e.g.
th ea lternator ,could be damaged. *
NO
TEDama getothev ehicle's electron‐
ics If
yo udon otdisconnec tthe batter yasdescri‐
bed here, thev ehicle's electronics could be
damaged. #
Alwaysd isconnect thes tarterb atter yin
fo llowing thes equence, and do not
re ve rset he batter yterminals under any
circums tances. Otherwise, thev ehicle's
electronics could be damaged. Ve
hicles wit hrear wheel drive %
If
th ev ehicle is expected tobe par kedf or an
ex tende dperiod or ou tofuseforl onger than
fo ur we eks, obser vethei nformation on park‐
ing thev ehicle forane xtende dperiod
(/ page 144). #
Vehicles with abatter ymain switch:
re mo vethem ain switc hofthe battery
(/ page121). #
Vehicles without abatter ymain switch:
switc hoffall electrical consumers. #
Switc hoffthee ngine and thep ower suppl y. #
Remo vethef loor co vering (/ page 204). #
Remo vescr ews 1and slide batter ycover
2 inthed irection of thea rrow.
The scr ewsm ustp rotrud eoverthe lar ger
re cesses. #
Remo vebatter ycover 2upwards. #
Firstloosen and remo vethen egativ eterminal
clam pont he batter ysothatthec lam pisno
longer in contact wit hthe term inal. #
Remo vethep ositiv eterminal clam pcover. #
Loose nthe positiv eterminal clam pand fold it
up tothes ide, toge ther wit hthe prefuse box. Breakdown assis
tance 205
Re
moving/installin gthe star terb attery Ve
hicles with rear wheel drive: removing the
st ar terb attery #
Disconnect thes tarter batter y(/ pag e205). #
Remo vebreather hose 1withthe connector
brac ketfromt he connection on thed egassing
co ver. #
Pull out and remo vescr ews 2of brac ket3
up wa rds. #
Slide thes tarter batter yfromi ts anchorag ein
th ed irection of tr avel. #
Foldtheb arsoft hestar terb atter yupwards
and remo vethes tarter batter yfromt he bat‐
te ry box.
Ve hicles with rear wheel drive: installin gthe
st ar terb attery #
Whe nreconnecting thes tarter batter y,
obser vethes afet ym easures and pr otection
no tes( /pag e202). #
Inser tthe star terb atter yintot he batter ybox. #
Fold down theb arsoft hestar terb atter y. #
Slide thes tarter batter yintoi ts anchorag ein
th eo pposit edirection tothed irection of
tra vel. #
Inser tbrack et 3 . #
Tighten scr ews2on brac ket3whic hholds
th eb atter yinp lace. #
Attach breather hose 1withthe connector
brac kettot he connection of thed egassing
co ver. #
Reconnect thes tarter batter y(/pag e205).
Mercedes-Benz recommends that youh ave the
st ar terb atter yreplaced at aqualified specialist
wo rkshop, e.g. an authorized Mercedes-Benz
Center.
If yo uw ant toreplace thes tarter batter yyourself,
obser vethef ollowing no tes:
R Alwaysr eplace adefectiv estarter battery
wit has tarter batter ywhichm eets thes pe‐
cific requirements of thev ehicle.
R Carryover de tach able parts suc hasthevent
hose, elbo wfittin gort erminal co verfromt he
st ar terb atter ytober eplaced.
R Mak esuret hat thev ent hose is alw aysc on‐
nected toits original openin gonthe battery
side.
Ins tallth ee xisting or newly supplied stop
plugs.
Otherwise, gases or batter yacid could
escape.
R Mak esuret hat thed etachable parts ar econ‐
nec tedint he same wayasb efore. 206
Breakdown assi stance