engine MERCEDES-BENZ C-CLASS SEDAN 2019 Repair Manual

The
follo wing device scan beused intheve hicle
wit hout restrictions :
R Two-w ayradios withamaximum transmis ‐
sion output ofup to100mW
R Two-w ayradios withtra nsmit terfr eq uencie s
in the380 -41 0MHz freq uency bandanda
maximu mtransmi ssionoutpu tof up to2W
(tr unk edradio system/T etra )
R Mobile phones (2G/3G/4G)
Ther ear eno restrictions whenpos itioning the
ant enn aon theoutside oftheve hicle forth efo l‐
lo wing freq uenc ybands:
R Trunk edradio system/T etra
R 70cm freq uency band
R 2G/3G /4G Ve
hicl eiden tificati onplat e,VIN and engine
number overview
Ve hicl eiden tificati onplat e Ve
hicle identif ication plate(US Aonl y)
1 Perm issible gros swe ight
2 Perm issible front axle load
3 Perm issible rear axle load
4 Paint code
5 VIN (vehicle identificat ion numb er) Te
ch nica lda ta 423

Ve
hicle identif ication plate(Canada only)
1 Perm issible gros swe ight
2 Perm issible front axle load
3 Perm issible rear axle load
4 Paint code
5 VIN (vehicle identificat ion numb er)
The permissib legross vehicle weight ismade up
of theve hicle weight ,all vehicle occupants, the
fuel andtheload. Themaximum gross axle
we ight rating isthemaximum weight that can be
car ried on one axle (front orrear axle ). Ne
verexc eed theper missible gross vehicle
we ight orthemaximum gross axle weight rating
fo rth efront orrear axle .
VIN infront oftheright- hand front seat 1
Imprint ed VIN (vehicle identification number )
2 Floor covering Ad
diti onalplat es 1
Engine numberstam ped intoth ecr ankc ase
2 Platewit hinf ormation aboutemissions test‐
ing, including confirm atio nof emis sions
guideli nesattheU. S. feder alleve las wellas
fo rCa lifor nia
3 VIN (vehicl eidentif icationnumber) asalab el
at thelowe redg eof thewindshield 42
4
Tech nica lda ta

0007
Donotsw allo w fuel or letit come into
cont actwith skin, eyes orclo thing. 0007
Donotinhale fuelvapor . 0007
Keep childr enaway from fuel. 0007
Keep door sand windo wsclos edduring
th ere fuel ingprocess.
If yo uor other people comeintocont actwith
fuel, obser vethefo llo wing: 0007
Imm ediat elyrinse fuelof fyo ur skin wit h
soap andwater. 0007
Iffuel comes intocont actwithyo ur
ey es, immediat elyrinse them thor‐
oughl ywit hclean water.Seek medical
att entio nimm ediately . 0007
Ifyo usw allo wfuel, seek medicalatten‐
tio nimm ediat ely. Do notind uce vomit‐
ing. 0007
Cha ngeimmedi ately out ofclo thing that
has com eint ocon tact with fuel . Fu
el No
teson fuel grades forve hicl eswith aga s‐
oline engine
Obser vetheno teson oper ating fluids
(0013 page42 5).
000E NO
TEDama gecau sed bythewr ong fuel Ev
en small amounts ofthewr ong fuelcould
re sult indamag eto thefuel system, the
engine andtheemission control system. 0007
Onlyre fuel withlow- sulfur unleade d
fuel.
This fuelmaycont ainupto10%ethanol by
vo lume. Your vehicle issuit able foruse with
E1 0fuel .
Ne verre fuel withone ofthefo llo wing fuels:
R Dies el
R Gasoline withmor eth an 10%ethanol by
vo lume, e.g.E15, E8 5,E100
R Gasoline withmor eth an 3% methano lby
vo lume, e.g.M15,M30 ,M85 ,M1 00 R
Gasoline withadditiv escon tainin gme tal
If yo uha ve acc iden tally re fuel edwithth e
wr ong fuel: 0007
Donotswit chon theignition . 0007
Consult aqu alif ied spec ialistwo rkshop. If
th eav ailable fuelisno tsuf ficie ntly low in sul‐
fur ,th is can produce unpleasant odors.
Onl yre fuel withfuel that has atleas tth eoct ane
number specifiedintheins truction labelinthe
fuel filler flap (0013 page15 9).
If yo uwa ntmaxim umengine output:onl y
re fuel withunle adedpr emiu mgrade gasoline
wit han oct ane number ofat leas t91 AKI/
95 RON.
As ate mp orar ymeasur e,ifth ere comme nded
fue lis no tav ailable, youma yalso refuel with
unle adedre gular gasoline withat leas t87 AKI/
91 RON.Thisma yre duce engineoutput and
incr ease fuelconsum ption.
Ne verre fuel using gasoline withan even lowe r
RO N. 42
6
Tech nica lda ta

000E
NO
TEPrema ture wearcaus edbyunle a‐
ded regular gasoline Un
leade dre gular gasoline cancause the
engine towe armor equ ickl yand impair lon‐
ge vity and perform anc e.
If unle aded premium grade gasoline is
una vailable andyouha ve torefuel using
unle adedre gular gasoline: 0007
Onlyfill th efuel tank tohalf fullwith
unleaded regular gasoline andrefill as
soon aspossible withunleaded pre‐
mium grade gasoline. 0007
Donotdr ive at themaximum speed. 0007
Avoid sudden accelerationandengine
speeds over3,000 rpm. Fu
rther information onfuel isavailable atthefo l‐
lo wing locations:
R ataga sst atio n
R ataqu alif ied spec ialistwo rkshop
R USAonly: athttp: //www .mbusa.com Inf
ormat iononaddit ives ingasoline
Obser vetheno teson oper ating fluids
(0013 page42 5).
000E NO
TEDama gefrom use ofunsu itabl e
add itives Ev
en smal lamou ntsofthewr ong additiv e
ma ylead tomalfu nctions occurring. 0007
Only addcle ani ng additiv es recomme n‐
ded byMer cedes-Ben zto thefuel. Mer
cedes- Benzrecomme ndsthat youuse fuel
br and sth at have addit ives.
In som ecoun tries, thefuel available mayno t
ha ve suf ficie ntadditiv es. Residue could buildup
in thefuel injec tionsystem asare sult. Inthis
case, incon sult ation withan aut hor ized
Mer cedes -Benz Cent er,th efuel maybe mix ed
wit hth ecleanin gadditiv ere comme ndedby
Mer cedes-Ben z.Be sureto obser vetheno tes
and mixing ratio ssp eci fied on thecon tainer .
Ta nk cont entand fuel reser ve
The totalcapac ityofthefuel tank mayva ry,
dependin gon theve hicle equipment. Capacity Model
Total cap acity
Al lmo dels 17.4 gal(66. 0liter s) Model
Ofwhic hre ser ve
All mod els1 .8gal(7 .0 liter s) Engine
oil No
teson engine oil
Obser vetheno teson oper ating fluids
(0013 page42 5). Te
ch nica lda ta 42
7

000E
NO
TEEngi nedama gecau sed byan
inc orrect oil filt er ,inc orrect oil oraddi‐
tiv es 0007
Donotus eengi neoilsor oil filt er sot her
th an those whic hmee tth especif ica‐
tion sneces saryfo rth epr escr ibed
ser vice interva ls. 0007
Donotalt er theengine oiloroil filt er in
or der toachie velong erchang eint erva ls
th an presc ribed. 0007
Donotuse additiv es. 0007
Have theengine oilchang edafte rth e
pr escr ibed interva ls. Mer
cedes -Benz recomme ndsthat youha ve the
oil chang ecar ried out ataqu alif ied spec ialist
wo rkshop.
Fu rther information onengine oiland oilfilt er sis
av ailable atthefo llo wing locations:
R IntheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids byent ering thedesignation :
- Athttp: //be vo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp R
ataqu alif ied spec ialistwo rkshop
Quality andcapacity ofengine oil
MB-F reigabe orMB- Appr oval Gasol
ineeng ine MB-Freigabe orMB-
Appr oval
All mode ls 229.51,229.52,
229.6 1,229.7 1 The
follo wing values referto an oilchang e,
inc ludin gth eoil filt er .
Re plac eme ntamoun t Mode
lR eplacement
am ount
C 300 7.0 US qt(6.6 liter s)
C 300 4MATIC 6.3USqt(6.0 liter s) No
teson brak efluid Obser
vetheno teson oper ating fluids
(0013 page42 5). 000A
WARNIN GRisk ofan acci dent dueto
va por pockets form ing inthebr ak esy s‐
te m
The brak efluid constantl yabsor bsmois ture
fr om theair .This lowe rstheboiling pointof
th ebr ak efluid. Ifth eboiling pointistoolow,
va por pockets ma yfo rm inthebr ak esy stem
when thebr ak es areapplied hard.
This causes thebr aking effect to be
im pair ed. 0007
Have thebr ak efluid rene we dat the
specif iedinterva ls. Ha
ve thebr ak efluid regular lyreplaced ata
qu alif ied spec ialistwo rkshop.
Onl yuse brak efluid appr ovedby Mer cedes-Ben z
accor dingtoMB-F reigabe orMB- Appr oval 33 1.0.
Yo ucan obtain further information onbrak efluid
in thefo llo wing places:
R intheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids
- athttp:/ /bevo.mercedes-b enz.com
- intheMer cedes- BenzBeVoApp 428
Tech nica lda ta

R
ataqu alif ied spec ialistwo rkshop Cool
ant No
teson coolant
Obser vetheno teson oper ating fluids
(0013 page42 5). 000A
WARNIN G‑Ri sk offire and injuryfrom
ant ifreez e
If ant ifreez ecom esintocon tact with hot
com ponent partsintheengine compart‐
ment ,it ma yignit e. 0007
Allo wtheengine tocool down before
ad ding anti freeze . 0007
Makesur eth at no ant ifreez espills out
ne xt to thefiller open ing. 0007
Thor oughl yclean offan yant ifreeze
fr om com pone ntpar tsbef orest ar tin g
th eve hicle. 000E
NO
TEDama gecau sed byinc orrect cool ‐
ant 0007
Onlyad dcool antthat has been pre‐
mix edwithth ere qu ired ant ifreeze pro‐
te ction.
Inf ormati ononcool antisavailable atthefo l‐
lo wing locations:
R IntheMer cedes- BenzSpecif ication for
Oper ating Fluids 310.1
- Athttp: //be vo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp
R Ataqu alif ied spec ialistwo rkshop 000E
NO
TEOverhea ting athigh outsid ete m‐
per atur es If
an inapp ropr iat ecoolant isused, the
engine cooling system isno tsuf ficie ntlypr o‐
te cted agains tov erheating andcorrosion at
high outside temp eratur es. 0007
Alw aysuse coolant approvedby
Mer cedes-Ben z. 0007
Obser vetheins truction sin the
Mer cedes-Ben zSpecif ications forOper‐
ating Fluids310.1. Ha
ve thecoolant regular lyreplaced ataqu alif ied
spec ialistwo rkshop.
The propor tionofcor rosion inhibit or/antifr eeze
concen trat ein theengine cooling system should
be:
R aminimum of50% (antifr eezeprotect ion
do wn toappr oximat ely-3 5°F (-37°C))
R amaxim umof55% (antifreeze protect ion
do wn to-49 °F(-45 °C))
Co olant capacity Mode
lC apacity
All mode ls 9.1 US qt(8.6 liter s) No
teson windshield washer fluid Obser
vetheno teson oper ating fluids
(0013 page42 5). Te
ch nica lda ta 429

000A
WARNIN G‑Ri sk offire and injuryfrom
wind shieldwa sher concen trat e
Wi ndsh ield wa sher concen trat eis highl y
fl ammab le.Itcoul dign ite if it com esinto
con tact with hotengine component partsor
th eex haus tsy stem. 0007
Mak esur eth at no wind shieldwa sher
concen trat espills outnext to thefiller
open ing. 000E
NO
TEDama getotheex terior lighting
due touns uitable windshieldwa sher fluid Uns
uitable windshieldwa sher fluid maydam‐
ag eth eplas ticsur face oftheex terior light‐
ing. 0007
Onlyuse windshield washer fluid whic h
is also suitable foruse onplastic sur fa‐
ces, e.g.MBSumm erFitor MB Winter‐
Fit. 000E
NO
TEBlocked spr aynozzl escau sed by
mixing windshieldwa sher fluids 0007
Donotmix MBSum merFitand MBWin‐
te rFit withot her windshield washer flu‐
ids. Do
notuse distilled orde- ionizedwa teras thefill
le ve lsen sor maybe trigg ered erro neou sly.
Re comme ndedwindsh ield wa sher fluid:
R Abo vefreezing point:e.g. MBSummerFi t
R Belo wfreezing point:e.g. MBWinterFi t
Fo rth ecor rect mixi ngratio ,re ferto theinf orma‐
tion ontheantif reeze container .
Mix thewa sher fluid withth ewindshield washer
fl uid allyear round . Re
frig er ant No
teson refrig er ants
Obser vetheno teson oper ating fluids
(0013 page42 5). 000E
NO
TEDama gedue toinc orrect refrig er‐
ant If
anon-appr ovedre frig er ant isuse d,thecli‐
mat econ trol system maybe damag ed. 0007
Onlyuse there frig er ant R‑134a 000E
NO
TEDama getotheclimat econ trol
sy stem due toinc orrect refrig er ant com‐
pr essor oil 0007
Onlyuse refrig er ant com pressor oilthat
has been approvedby Mer cedes-Ben z. 0007
Donotmix theappr ovedre frig er ant
com pressor oilwithadif fere nt refrig er‐
ant com pressor oil. Wo
rkon theclimat econ trol system maybe car‐
ri ed out onlyby aqu alif ied spec ialistwo rkshop.
All appli cable regulations, aswellas SAEstand‐
ar dJ63 9,mus tbe adher edto.
The instruction labelontheclimat econ trol sys‐
te m forth ere frig er ant type andthere frig er ant
com pressor oilisloca tedon theinside ofthe
hood. 430
Tech nica lda ta

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
(Canada only)
Check BrakeFluidLevel 0007
Consult aqu alif ied spec ialistwo rkshop. 0007
Donotadd brak efluid. 0007
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do not
continu edr ivi ng und eranycir cums tances. 0007
Donotad dbr ak efluid. 0007
Con sult aqu alif ied spec ialistwo rkshop.
Rada rSensors DirtySee
Operator's Manual *T
heradar sensor system ismalfunct ioning.Possible causes are:
R Dirton thesensor s
R Hea vyrain or sno w
R Extende dcou ntrydr ivi ng without other traf fic, e.g. inthedeser t
Dr iving systems anddriving safetysy stems maybe malfunct ioningortemp orarily una vailable.
Onc eth ecause ofthepr oblem isno long erpresent ,dr iving systems anddriving safetysy stems willbeavailable
ag ain.
If th edispla ymessag edoes notdisappear : 0007
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions. 0007
Clea nallsenso rs(0013 page36 4). 0007
Restar tth eengine. 44
0
Dis play messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Act ive Brake Assist Func-
tions Currently LimitedSee
Operator' sManual *
Ve hicl eswith theDr iving Assistance Packag e:Ac tiveBr ak eAssi stwit hcr oss- traf fic functi on,Evasi ve Steer ing
Assis tor PRE‑S AFE®
PL US arete mp orarily una vailable oronl ypar tiall yav ailable.
Ve hicl eswithout theDr iving Assistance packag e:Ac tiveBr ak eAssi stistemp orarily una vailable.
The ambien tcon dition sar eouts idethesy stem limits (0013 page17 5). 0007
Drive on.
As soo nas theambient conditions arewit hin thesy stem limits, thesy stem will become available again. 0007
Ifth edispla ymessag edoes notdisappear ,st op theve hicle while paying attention toroad and traffic condi tions
and restar tth eengine.
0075
SRS Malfunct ionServ ice
Required *T
herestra int system isfaulty (0013 page34 ). 000A
WARNIN GRisk ofinju ryor fata linj urydue toamalf unctionin there stra int system
If th ere stra int system ismalfunct ioning,restra int system com ponen tsma ybe trigg ered unint entionall yor
might notbe trigg ered atall intheeve ntofan acci dent. Thisma yaf fect theEmer gency Tensi oni ng Device or
ai rba g,forex am ple. 0007
Have there stra int system checkedand repair edimmediat elyataqu alif ied spec ialistwo rkshop. De
tection ofare stra int system malfunct ion:
R The 0075 restra int system warning lam pdoes notlight upwhen theignition isswitc hedon.
R The 0075 restra int system warning lam plight sup con tinuousl yor repeat edlydur ing ajour ney. 0007
Visit aqu alif ied spec ialistwo rkshop immediat ely. Dis
play messa gesand warning/ indic ator lam ps 44
7

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Blind SpotAssist Current ly
Unavailable SeeOperator' s
Manual *B
lind SpotAss istis temp orarily una vailable.
The system limits have been reac hed (0013 page21 9). 0007
Drive on.
Once thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again.
or 0007
Ifth edispla ymessag edoes notdisappear ,st op theve hicle while paying attention toroad and traffic condi tions
and restar tth eengine. 0007
Ifneces sary,cle an there ar bum per.If th ebum perisex treme lydir ty,th esensor sin thebum permaybe mal‐
func tioning. Act
ive Steering AssistInop-
erative *A
ctiveSt eer ing Assis tis malfunct ioning.ActiveDis tance AssistDIS TRONI Cremains available. 0007
Visit aqu alif ied spec ialistwo rkshop.
00CC Vehicle RisingPlease Wait *T
hevehicle leve lis toolow. The vehicle israised totheselect edvehicle leve l. 0007
Waitunt ilth edispla ymessag edisappear sbef orepulling away.
*B lind SpotAss istis malfun ctionin g. Disp
lay mess ages and warning/ indic ator lam ps 44
9