2019 MERCEDES-BENZ C-CLASS SEDAN ECU

000A
WARNIN GRisk ofacci dent dueto
object sin thedr iver's foot we ll
Obj ectsin thedr iver's foot we llma yim pede
pedal trav el or bloc kadepr essed pedal.
This jeopar dizestheoper ating androad
saf etyof theve hicle. 0007
Stow allobj ect sin theve hicle secur ely
so that they canno tget intoth edr iver's
fo ot we ll. 0007
Alw aysins tallth efloor mats securely
and asprescr ibed inorder toensur e
th at ther eis alw ayssuf ficie ntroom for
th epedals. 0007
Donotuse loose floor mats anddonot
place floor mats ontopof one another. 000E
NO
TEBatt erydi sc ha rging from using
de vice sconne cted tothediagnos tics
con nect ion Using
devices atthediagnos ticsconnect ion
dr ains thebatt ery. 0007
Chec kth ech arge leve lof thebatt ery. 0007
Ifth ech arge leve lis low, charge the
batt ery, e.g. bydriving acon sider able
dis tance. Co
nnecti ngequip ment tothediagnos ticscon‐
nect ioncan lead toemissions monitoring infor‐
mation beingrese t,forex am ple. This maylead
to theve hicle failing tomee tth ere qu iremen tsof
th ene xt emissions inspectionduring themain
inspect ion. Qualif
iedspecialis two rkshop
An author ized Mercedes-B enzCent erisaqu ali‐
fi ed specialis two rkshop. Ithas theneces sary
special skills,tools and qualif icat ionsto cor‐
re ctly carryout thewo rkrequ ired on your vehi‐
cle. This particular lyapplies tosaf ety-re leva nt
wo rks.
Fo rth efo llo wing, alwaysha ve your vehicle
ch eckedat an aut hor ized Mercedes- BenzCen‐
te r:
R safety-re leva nt wo rks
R service andmaint enance work R
repair work
R modif ications aswellas installation sand
con versions
R workon electr oniccomponent s
Mer cedes‑B enzrecomme ndsaMercedes‑Be nz
ser vice center. Co
rrect use oftheve hicl e
If yo ure mo veanywa rning sticke rs,yo uor other s
could failto recogni zecer tain dang ers. Lea ve
wa rning sticke rs inposit ion.
Obser vethefo llo wing informatio nin par ticular
when drivin gyo ur vehicle:
R thesaf etyno tesin this manual
R tech nica lda ta forth eve hicle
R traf fic ru les and regulations
R laws and safetyst andar dsper tainin gto
mo torve hicles 26
Gener alno tes

QR
code forre scue card
The QRcode issecur edinthefuel filler flap and
on theopposit eside ontheB-pillar .In theeve nt
of an acci dent, rescue services canusetheQR
code toquickl yfind theappr opriatere scue card
fo ryo ur vehicle. Thecurrent rescue cardcon‐
ta ins themos tim por tant informa tionab ou tyo ur
ve hicle inacom pact form ,e.g. thero utin gof the
electr iclines.
Fu rther information canbeobt ained athttp: //
www .mercedes-benz .de/qr-code. Data
storage Electr
oniccontr olunit s Ele
ctro nic contr oluni tsareins talled inyour vehi‐
cle. Some ofthese areneces saryfo rth esaf e
oper ation ofyour vehicle, whilesome assistyo u
when drivin g(dr iver assis tance systems). In
addition, your vehicle prov ides comfort and
ent ertainm ent func tions,whic har ealso made
possible byelectr oniccontrol units.
Elect ronic contr oluni tscont ain da ta memor ies
whi chcan temp orarily orper manent lystor e te
ch nica linf orma tionab ou tth eve hicle's operat‐
ing stat e, com ponent loads, maintenance
re qu iremen tsand tech nica leve nts orma lfunc‐
tio ns.
In gener al,th is inf ormatio ndocum entsth est at e
of acom ponent part,amodul e,asy stem orthe
sur round ingssuc has:
R operatin gst atus ofsystem com ponen ts(e.g.
fi ll le ve ls, batt eryst atus ,tir epr essur e)
R status messagescon cerningth eve hicle or
its individua lcom ponent s(e.g. number of
wheel revo lution s/speed, longitudin alacc el‐
er ation ,lat eral acc eler ation ,displa yof fas‐
te ned seatbe lts)
R malfunctio nsorfaults inim por tant system
com ponen ts(e.g. lights, brak es)
R information oneve nts lead ing tovehicle
damag e
R system react ionsin spec ialdrivin gsit uatio ns
(e. g.airbag deployment,int erve ntio nof sta‐
bilit ycon trol systems)
R ambient conditions (e.g.temp eratur e,rain
sen sor) In
addition toprov iding theactual control unit
func tion,th is dat aassis tsthemanuf acturerin
de tecting andrectify ingmal functi onsand opti‐
mizi ngvehicle functions. Themajority ofthis
dat ais temp orar yand isonl ypr ocessed inthe
ve hicle itself. Onlya small portion ofthedat ais
st or ed intheeve ntor ma lfunctio nmem ory.
When your vehicle isser viced, tech nica lda ta
fr om theve hicle canberead out byser vice net‐
wo rkem ployees (e.g. workshops, manufactur‐
er s) or third par ties (e.g. breakdo wnservice s).
Ser vice sinc lude repair services, maintenanc e
pr ocesses ,wa rrant yclaim sand qualit yassur ‐
anc emeas ures, forex am ple. Theread out isper‐
fo rm ed via theleg ally prescr ibed portfo rth e
diagnos ticsconnection intheve hicle. The
re spectiv eser vice networklocations orthird
par ties collec t,pr oces sand usethedat a.The y
documen tte ch nica lst atus esoftheve hicle,
assis tin findi ng ma lfunctio nsand improv ing
qu alit yand aretrans mittedto themanuf acturer,
if neces sary.Fu rther mor e,themanuf actureris
subject toproduct liability .Fo rth is, themanu‐
fa ctur errequ ires tech nica lda ta from vehicles. 28
Gener alno tes

Re
stra int system Pr
otection bythere stra int system The
restra int system includes thefo llo wing com‐
pone nts:
R Seat beltsystem
R Airbags
R Child restra int system
R Child seatsecur ingsystem
The restra int system can reduce therisk ofvehi‐
cle occupants comingintocont actwithpar tsof
th eve hicle's interior intheeve ntofan acci dent.
The restra int system can also reduce thefo rc es
to whic hve hicle occupants aresubject edinthe
eve ntofan acci dent.
Only asea tbe ltwh ich is wo rncor rectly can pro‐
vid eth eint ended leve lof protect ion. Depen ding
on thede tected acci dent situation, Emerg ency
Te nsi oni ng Device sand /or airba gssupp lement a
cor rectly wornseat belt. Emer gency Tensi oni ng
De vice sand /or airba gsare notde ploy ed in
eve ryacc iden t. Fo
rth ere stra int system toprov ide itsfull protec‐
tion ,eac hoccupant mustobser vethefo llo wing:
R Fasten theseat beltcorrectl y.
R Beinan almos tup right position withth eir
bac kag ains tth eseat backres t.
R Sitwithth eir feet resting onthefloor ,if pos‐
sible.
R Alw ayssecur eper sons under 5ft (1.50 m)
ta llin an addition alrestra int system suitable
fo rMer cedes-Benz vehicles.
Ho we ver,no system available toda ycan com‐
ple tely eliminat einjur iesand fata lities inevery
acciden tsituation .In par ticular ,th eseat belt
and airbag gener ally do notpr otect agains t
objec tspene trating theve hicle from theoutside.
The risk ofan injur yre sulting from airbag
deplo yment alsocanno tbe ruled out entirel y. Limit
edprotection from there stra int system 000A
WARNIN GRisk ofinju ryor deat hfrom
modif ications tothere stra int system
The restra int system can nolong erfunc tion
cor rectly afte ralt erations have been made.
The restra int system mayth en notpr otect
th eve hicle occupants asintended byfailing
in an acc ident ortrigg ering une xpec tedly ,fo r
ex am ple 0007
Neveralt er thepar tsof there stra int
sy stem. 0007
Neverta mp erwit hth ewir ing orany
electr oniccomponen tpar tsor their
sof tware. If
it is neces saryto adjus tth eve hicle toacc om‐
modat eaper son withdisabil ities, con tact an
au thor ized Mercedes-B enzCent erforde tails.
US Aonl y:forfur ther information contact our
Cu stomer Assistance Center at
1-800-F OR-MER Cedes(1 ‑800‑36 7‑6372). Occ
upant safety 33

Seat
belts Pr
otection prov ided bytheseat belt Alw
aysfa sten your seat beltcorrect lybef ore
st ar tin gajo ur ne y.Asea tbe ltcan only prov ide
th ebes tle ve lof protect ion ifit is wo rncor rectl y. 000A
WARNIN GRisk ofinju ryor deat hdue to
inc orrectl yfa stened seatbelt
If th eseat beltisno two rncor rectly ,it can‐
no tper form itsintended protect ive func tion.
In addition, anincor rectly fastened seatbelt
can also cause injuries,forex am ple, inthe
ev ent ofan acciden tor when braking or
ch ang ingdirect ion sudden ly. 0007
Alw aysensur eth at all vehicle occu‐
pants have their seat belts fastened
cor rectl yand aresitti ngprope rly. Alw
aysobser vetheins truction sabout thecor‐
re ct driver's seatpos ition and adjus ting theseat
(0013 page90). In
order forth ecor rectl ywo rnseat belttopro‐
vide theint ended leve lof protect ion, eachve hi‐
cle occupant mustobser vethefo llo wing infor‐
matio n:
R The seat beltmustno tbe twis tedand must
fi t tig htly and snuglyacr oss thebody .
R The seat beltmustbe routed acr oss thecen‐
te rof theshoulder andaslow do wn across
th ehips aspossible.
R The shoulder sectionoftheseat beltshould
no tto uc hyo ur neck nor berouted unde r
yo ur arm or behin dyo ur bac k.
R Avoid wearing bulk yclo thing, e.g. awint er
coat .
R Push thelap belt down asfaras possi ble
acr oss your hips andpulltight wit hth eshoul‐
der sect ionofthebelt. Neverro uteth elap
belt across your abdom en.
R Neverro uteth eseat beltacross shar p,poin‐
te d, abr asiv eor fragile objec ts.
R Onlyone person should useeachseat beltat
an yone time. Neverall ow babies andchil‐
dr en totrave lsitt ing onthelap ofano ther
ve hicle occupant. R
Neversecur eobjects withaseat beltifth e
seat beltisalso being usedbyone ofthe
ve hicle's occupants. Alwaysobser vethe
ins truct ions forloa ding theve hicle when
secur ingobject s,lugg ageor loads
(0013 page10 4).
Als oensu rethat no obj ect s,e.g .a cus hion ,
ar eeve rpla ced between aper son and the
seat.
The seat belts onthefo llo wing seats areeq uip‐
ped withaspec ialseat beltretract or:
R front-p asse ng er seat
R Rear seat s
Ac tivateor deacti vate thespecial seatbelt
re tract or(0013 page 54).
If ch ildr enaretrave ling intheve hicle, besur eto
obser vetheins truction sand safetyno teson
"Chi ldren intheve hicle" (0013 page49). 36
Occupant safety

Re
duce dse at beltpr otection 000A
WARNIN GRisk ofinju ryor deat hdue to
inc orrect sea tpos ition
The seatbel tdoe sno tof ferth eint ended
le ve lof protect ion ifyo uha ve notmo vedth e
seat backres tto an almos tve rtical posit ion.
When brakin gor intheeve ntofan acci dent,
yo uco uld slide underne athth eseat beltand
sus tain abdomin alor nec kinj uries, forex am‐
ple. 0007
Adjus tth eseat proper lybef orebegin‐
ning your jour ne y. 0007
Alw aysensur eth at theseat backres tis
in an almos tve rtical posit ionand that
th eshoulder sectionofyour seat beltis
ro uted acr oss thecent erofyour sho ul‐
der . 000A
WARNIN GRisk ofinju ryor deat hwhen
additional restra int systems areno tused
fo rper sons withasmal lerbuild
Pe rsons under 5ft (1.50 m)tallcan notwe ar
th eseat beltcorrectly without asuit able
additional restra int system.
If th eseat beltisno two rncor rectly ,it can‐
no tper form itsintended protect ive func tion.
In addition, anincor rectly fastened seatbelt
can also cause injuries,forex am ple, inthe
ev ent ofan acciden tor when braking or
ch ang ingdirect ion sudden ly. 0007
Alw ayssecur eper sons under 5ft
(1 .50 m)tallin asuit able restra int sys‐
te m. 000A
WARNIN GRisk ofinju ryor deat hdue to
damag edormodif iedseat belts
Seat belts cannotprov ide protect ion inthe
fo llo wing situat ions:
R Ifth eseat belts aredamag ed,modif ied,
ex treme lydir ty,bleac hedordyed R
Ifth eseat beltbuckleisdamag edor
ex treme lydir ty
R Ifth eEmer gency Tensi oni ng Device s,
sea tbe ltanc horages orsea tbe ltre trac‐
to rs have been modif ied
Seat belts maybe damag edinan acciden t,
alt hough thedamag ema yno tbe visible, e.g.
due tosplint ersof glass.
Modif iedordamag edseat beltsma yte ar or
fa il, e.g. inan acc ident .
Modif iedEmerge ncy Tensi oni ng Device scan
acci dentally trig ge ror failto function as
int ended . 0007
Nevermodify theseat belts, Emergency
Te nsi oni ng Device s,sea tbe ltanc ho‐
ra ge sor seat beltretract ors. 0007
Makesur eth at theseat belts are
undamag ed,notwo rnand clean. 0007
Alw aysha ve theseat belts checked
immed iatelyaf te ran accide ntata
qu alif ied spec ialistwo rkshop. Occupant
safety 37

Pr
otection bytheair bags Dep
endingontheacciden tsituation ,an airbag
ma ysupplement thepr otect ion offere dby acor ‐
re ctly fastened seatbelt. 000A
WARNIN GRisk ofinju ryor deat hdue to
inc orrect sea tpos ition
If yo ude viat efrom thecor rect sea tpos ition,
th eair bag cann otper form itsintended pro‐
te ctiv efuncti onand deployme ntma yev en
cause further injur ies.
To avo idhazar dous situat ions,alw aysmak e
sur eth at all vehicle occupants:
R Have their seat beltfastened correctly ,
incl uding pregna ntwo men.
R Areseat edproper lyand that dis tance to
th eair bags isas larg eas possible.
R Obser vethefo llo wing informatio n. 0007
Alw aysmak esur eth at ther ear eno
objec tsbetween theair bag and the
ve hicle occupant. To
avo idtherisk sre sulting from thedeplo yment
of an airbag, eachve hicle occupant must
obser vethefo llo wing informatio n:
R Beforest ar tin gyo ur jour ne y,adjus tyo ur seat
co rrect ly;th edr iver's seat andfront -
passeng erseat should bemo vedas farbac k
as possi ble.
When doingso,alwaysobser vetheinf orma‐
tion onthecor rect driver's seatpos ition
(0013 page 90).
R Onlyhold thesteer ing wheel bythesteer ing
wheel rim. This allow sth eairbag tobe fully
deplo yed.
R Alw ayslean agains tth eseat backres twhen
th eve hicle isin mo tion. Donotlean forw ards
or agains tth edoor orside windo w.Youma y
ot her wise beinthedeplo yment area ofthe
airbag s.
R Alw ayske ep your feet on thefloor .Do not
put your feet on thecoc kpit, forex am ple.
Yo ur feet ma yot her wise beinthedeplo y‐
ment area oftheairbag. R
Ifch ildr enaretra veling intheve hicle,
obser vetheadditional notes
( 0013 page49).
R Alw aysst ow and secureobj ect scor rectl y.
Objects intheve hicle interior maypr ev ent an
airbag from func tioningcorrectl y.Eac hve hicle
occupant mustalw aysmak esur eof thefo llo w‐
ing:
R Ther ear eno people, animals orobje cts
be tween theve hicle occupants andanair‐
bag.
R Ther ear eno object sbe tween theseat, door
and door pillar (B-pillar).
R Ther ear eno har dobjec ts,e.g. coat hangers,
hanging onthegr ab handles orcoat hooks.
R Ther ear eno accessor ypar ts,suc has PNDs
(P er sonal Navig ation Devices) ,mobil e
phones orcup hold ersatt ached totheve hi‐
cle within thedeplo yment area ofan airbag,
e.g. onthecoc kpit, ondoor s,side windo ws
or side paneling.
In addition, noconn ectin gcable, tensi oni ng
st ra por retainin gst ra pma ybe routed Oc
cupan tsaf ety 41

The
status ofthefront passeng erfront airbag is
displa yedaf te rth eself-t est:
R PASSENGER AIRBAGON light sup for
60 seconds ,sub sequently both indic ator
lam psareof f(P AS SENGER AIR BA GON and
OF F): thefront passeng erfront airbag isable
to deplo yin theeve ntofan acci dent.
R PASSENGER AIRBAGOF Flight sup con tinu‐
ousl y:thefront passeng erfront airbag isdis‐
abled. Itwill then notbe deplo yedin the
eve ntofan acci dent.
If th ePA SSENGER AIRBAGON indicat orlam pis
of f,on lythePA SSENGER AIRBAGOF Find icat or
lam psho wsthest atus ofthefront passeng er
fr ont airbag. ThePASSENGER AIRBAGOF Find i‐
cat orlam pma ybe litcon tinuousl yor be off.
If th ePA SSENGER AIRBAGOF Find icat orlam p
and the0075 restra int system warning lam p
light upsimultaneousl y,thefront passeng erseat
ma yno tbe used. Alsointhis case, donotins tall
a ch ild restra int system onthefront passeng er
seat. Have aut omat icfron tpasse nger fron tair‐
bag shut offch eckedand repair edimmediat elyat
a qu alif ied spec ialistwo rkshop. St
atus displa y
If th efront passeng erseat isoccupied, ensure,
bo th bef oreand during thejour ney,that thest a‐
tus ofthefront passeng erfront airbag iscor rect
fo rth ecur rent situa tion.
Af terin st alli ng are ar wa rd-faci ng child
re stra int system onthefront passeng er
seat :PA SSENGER AIRBAGOF Fmus tbe litcon ‐
tin uousl y. 000A
WARNIN GRisk ofinju ryor deat hfrom
using are ar wa rd-faci ng child restra int
sy stem when thefront passeng erfront
airbag isenabled
If yo usec ureach ild inare ar wa rd-faci ng
ch ild restra int system onthefront passeng er
seat andthePA SSENGER AIRBAGOF Find i‐
cat orlam pis off,th efront passeng erairbag
can deplo yin theeve ntofan acci dent.
The child could bestru ck bytheairbag.
Alw aysensur eth at thefront passeng erair‐
bag isdeactiv ated. The PASSENGER AIRBAG
OFF indicat orlam pmus tbe lit. NEVER
useare ar wa rd-faci ng child restra int
sy stem onaseat protect edbyan ENABLED
FR ONT AIRB AG infront ofit,DE ATHor SERI‐
OUS INJURYtotheCH ILD can occur . When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (0013page59).
Depending onthech ild restra int system and the
st atur eof thech ild, thePA SSENGER AIRBAG
OFF indicat orlam pma ybe off.In this case, do
no tins tallth ere ar wa rd-faci ng child restra int
sy stem onthefront passeng erseat.
Ins tead, installth ere ar wa rd-faci ng child
re stra int system onasuit able rear seat .
Af terin st alli ng afo rw ard-f acin gch ild
re stra int system onthefront passeng er
seat :depen dingonthech ild restra int system
and thest atur eof thech ild, PASSENGER AIR
BA GOF Fma ybe litcon tinuousl yor be off.
Alw aysobser vethefo llo wing informatio n. Occ
upant safety 45

Re
versing thePRE- SAFE®
sy stem mea sures If
an acc iden tdid notocc ur,th epr e-em ptive
measur esthat we retak en arere ve rsed.
Yo uwill need toper form certainse ttings your‐
self . 0007
Ifth eseat beltpre-t ension ingisno tre duced,
mo vetheseat backres tbac kslightl y.
The locking mechanism releases. Fu
nction ofPRE-S AFE®
PL US (anticipat ory
occupant protection plus) PRE-
SAFE®
PL US can detect cer tain im pact s,
par ticular lyan imm inentrear impact ,and take
pr e-em ptive measur estoprotect theve hicle
occupants. Thesemeasur escanno tnecessar ily
pr eve ntan imm inentimpact.
PR E-S AFE ®
PL US can implem entthefo llo wing
measur esindepe ndently of eac hot her :
R Tight ening theseat belts onthedr iver's seat
and front passeng erseat.
R Increasin gbr ak epr essur ewhen theve hicle
is statio nary.This brak eapplication iscan‐ celed
automaticall ywhen theve hicle pulls
aw ay.
If an accident didnotoccur ,th epr e-em ptive
measur esthat we retake nar ere ve rsed.
Sy stem limita tions
The system will notinitiat ean yaction inthefo l‐
lo wing situat ions:
R when backingup
The system will notinitiat ean ybr aking applica‐
tion inthefo llo wing situat ions:
R whils tdr ivin g
or
R when entering orexitin gapar kingspace
while using ActivePa rking Assist Saf
elytransp orting childr enintheve hicl e Alw
aysobser vewhen childr enaretrav eling
in theve hicl e 0009
Also strictly observe thesaf etyno tesfo rth e
specif icsituation. Inthis wa yyo ucan recog‐
nize potentia lri sk sand avoiddang ersif ch il‐ dr
en aretrav eling intheve hicle
(0013 page49).
Be dilig ent
Bear inmind that neg lectingto secur each ild in
th ech ild restra int system mayha ve ser ious con‐
seq uences. Alwaysbe dilig entinsecur ingach ild
car efull ybef oreev eryjour ney.
To improv epr otect ion forch ildr enyoung erthan
12 yearsold orunde r5 ft (1.50 m)inheight ,
Mer cedes- Benzre comme ndsyouobse rveth e
fo llo wing informatio n:
R Alw ayssecur eth ech ild inach ild restra int
sy stem suitable forth is Mer cedes -Benz vehi‐
cle.
R The child restra int system mus tbe appr opri‐
at eto theag e, we ight andsize ofthech ild.
R The vehicle seatmustbe suit able forins tal‐
ling ach ild restra int system.
Ac cid ent statis ticssho wthat childr ensecur edin
th ere ar seat sar ege ner ally saf erthan childr en
secur edinthefront seats. Forth is reason ,
Mer cedes-Ben zst ro ng lyad vis es that youins tall
a ch ild restra int system onare ar seat . 48
Occupan tsaf ety