check engine MERCEDES-BENZ C-CLASS SEDAN 2019 Owner's Manual

0007
Mak esur eth at mar kedspace 2isem pty. 0007
Remo veSmar tKey 1 from theke yring. 0007
Place Sma rtKe y1 inmar kedspace 2on
th esymbol 3.
The vehicle willstar taf te ra shor ttime.
If yo ure mo veSmar tKey 1 from mar ked
space 2theengine continues running .Fo r
fur ther engine star ts howe ver,Smar tKey 1 mus
tbe locat edinmar kedspace 2onsym‐
bol 3during theent ire jour ney. 0007
Have theSmar tKey 1 checkedat aqu alif ied
spec ialistwo rkshop.
If th eve hicl edoes notst ar t: 0007
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. 0007
Depr essthebr ak epedal andstar tth eve hicle
using thest ar t/ stop butt on.
0009 Youcan also switchon thepo we rsupp lyor
th eignition withth est ar t/ stop butt on. St
arting theve hicl evia Remo teOnline serv‐
ices Cooling
orheating theve hicl eint erior before
co mmenci ngyour jour ney
0009 This function isno tav ailable inall coun tries.
If yo ust ar tth eve hicle viayour smar tphon e,the
pr ev iousl yselec tedair con dition ingadjus tment
is activ e. En
sur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tly filled.
R The star terbatt eryis suf ficie ntly charge d.
0009 Youcan also setth ete mp eratur ewit hyo ur
smar tphon e.Info rm atio non Mer cedesme
con nectand other services: http://
www .mercedes.me
This funct ionisno tav ailable forall model s.
Char ging thebat tery bef orecommencing
yo ur jour ney
0009 This function isno tav ailable inall coun tries.
R Ifth eve hicle batteryis disc harg ed,you
re cei veames sageon your smar tphon e.
R Youcan then star tth eve hicle withth e
smar tphone tocharge thebatt ery.
R The vehicle isaut omaticall yswitc hedoff
af te rte nminu tes. 14
6
Driving and parking

0009
Glide mode canalso beact ivat ed ifyo uha ve
select edthe"Eco" setting forth edr ive in the
dr ive pr og ram =.
Gli de mode isdea ctivated again ifone ofthe
condi tions isno long erme t.
Gl ide mod ecan also be preve nted bythefo llo w‐
ing parame ters:
R Incline R
Downhill gradi ent
R Temp eratur e
R Height
R Speed
R Oper ating status oftheengine
R Traf fic situ ation 0009
Glide mod ecan beende dby pressing the
ri ght- hand steer ing wheel paddle shifter
( 0013 page15 6). Pr
obl em swit hth etransm ission Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
The transmission hasafa ulty gearshif t. The transm issionis losin goil. 0007
Have thetra nsmiss ioncheckedat aqu alif ied spec ialistwo rkshop immediat ely.
The acceler ationcharact eristic sar e
de terior ating.
The transmission nolong ershif tsgear. The
transm issionis in emer gency operati on mod e.
It is only possi ble to shif tto one gear and reve rsege ar. 0007
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions. 0007
Swi tchth etra nsmiss iontoposition 005D. 0007
Switc hof fth eengine. 0007
Waitat leas tte nseco ndsbefore restar tin gth eengine. 15
8
Driving and parking

R
freq uent operation inmount ainouste rrain or
on poor road sur faces
R whe nth eengine isoftenleft idling forlong
per iods
R oper ation inpar ticula rly dus tycond ition s
and /orif air -rec ircula tion mod eis freq uen tly
used
In these orsimilar operating conditions ,ha ve the
int erior airfilt er ,engin eair clean er,engin eoil
and oilfilt er etc. chang edmor efreq uent ly.The
tir es mus tbe checkedmor efreq uentl yif th e
ve hicle isoper ated under increased loads. Fur‐
th er information canbeobt ained ataqu alif ied
spec ialistwo rkshop. Batt
erydisconne ctionperiods The
ASSYSTPL US service interva ldisp lay
can onlycalculat eth eser vice dueda te when
th ebat tery isconnect ed. 0007
Notedown theser vice duedatedispla yedon
th eins trument displaybef orediscon necting
th ebatt ery(0013 page35 1). Engine
compartment Opening/closing
thehood 000A
WARNIN GRisk ofacci dent ifth eengine
hood isunlatc hedwhile driving
An unloc kedengin ehood mayopen upwhen
th eve hicle isin mo tion andblockyo ur vie w. 0007
Neverunla tchth eengine hoodwhile
dr iving. 0007
Beforeev erytrip, ensur eth at the
engine hoodislatc hed. 000A
WARNIN GRisk ofacci dent andinjury
when openingand closingtheengine
hood
When opening orclosing theengine hood,it
ma ysuddenl ydr op intoth eend position .
Ther eis arisk ofinjur yfo ran yone inthe
engine hood's rang eof mo vement. 0007
Onlyopen orclose theengine hood
when ther ear eno per sons inthe
engine hood's rang eof mo vement. 000A
WARNIN GDang erofburnswhen open‐
ing thehood
If yo uopen thehood when theengine has
ove rheat edordur ing afire intheengine
com partmen t,yo uco uld come intoco ntact
wit hho tga ses orother escaping operating
fl uids. 0007
Beforeopen ingthehood, allowthe
engine tocool down. 0007
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. 000A
WARNIN GRisk ofinju rydue tomo ving
par ts
Cer tain com pone ntsin theengine compart‐
ment maycon tinue tomo veorsuddenly
mo veagain evenaf te rth eignition hasbeen
switc hedoff,e.g. thecooler fan.
Ma kesur eof thefo llo wing beforeper form ing
ta sk sin theengine compartmen t: 0007
Swi tchth eignition off. 352
Maintenanc eand care

0007
Push handle 1ofthehood catchupw ards
and liftth ehood byappr oximat ely15 in
(40 cm). 0007
Toclose: lowe rth ehood andletit fallfrom a
height ofappr oximat ely8 in (20 cm). 0007
Ifth ehood canstill be lifte dslightl y,open
th ehood again and close itwit halittle more
fo rc euntil iteng ages cor rectl y. Engine
oil Chec
kingtheengine oilleve lusing theoil
dip stick 000A
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine, the
ra diat orand partsof theex haus tsy stem. 0007
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. Re
quirement s:
R The engin emus tha ve an oildips tick.Ifno t,
th eengine oilleve lcan becheckedonl ywit h
th eon- boar dcom puter(0013 page355).
Depen dingontheengine, theoil dips tickma ybe
ins talled intheengine compartmen tin dif fere nt
lo cati ons.
The waitin gtim ebef orech ecking theoil leve l
when theengine isat nor mal oper ating temp era‐
tur eis five minut es. 0007
Park theve hicle onaleve lsur face. 0007
Pulloil dips tic k1 outand wipe off. 0007
Slowly slide oildips tic k1 intoth eguide
tube tothestop, and take itout again afte r
appr oximat elyth re esecon ds.
R Oilleve lis cor rect:oil leve lis be tween 2
and 3.
R Oilleve lto olow: oil leve lis at 3 or
belo w. 35
4
Maint enanc eand care

R
Oilleve lto ohigh: oilleve lis abo ve2 . 0007
Ifth eoil leve lis toolow, add 1.1 US qt
(1 liter) ofengine oil. 0007
Ifth eoil leve lis toohigh, drain offexc ess
engine oil.Consult aqu alif ied spec ialist
wo rkshop.
Chec kingtheengine oilleve lusing theon-
boar dcom puter
Re quirement s
The engin emus tha ve an oilleve lsen sor.If no t,
th eengine oilleve lcan becheckedonl ywit hth e
oil dips tick(0013 page35 4).
The engine oilleve lis de term ined during drivin g.
De term inin gth eengine oilleve lcan take up to
30 minut eswit hanor mal driving style and even
long erwit han act ive dr ivin gst yle.
In order torecei veare sult asquickl yas possi‐
ble:
R Warm uptheengine
R Park theve hicle onaleve lsur face
R Lea vetheengine running atidling spe ed On-bo
ardcom puter:
0018 Service0019
Engine OilLeve l
Yo uwill see oneof thefo llo wing mess ages on
th emultifunc tiondispla y:
R Measuring Engine OilLevel.. .:measur ement
of theoil leve lis no tye tpo ssi ble. 0007
Repeat there qu estaf te ra maximu mof
30 minut esdriving.
R Engine OilLevel OKand thebar displa yfo r
indic atingth eoil leve lon themultifunc tion
displa yis green and isbe tween "min" and
"max": theoil leve lis cor rect.
R Engine OilLeve lAdd 1.0land thebar displa y
fo rindica tingtheoil leve lon themultifunc ‐
tion displa yis orang eand isbelo w"min": 0007
Add1.1 US qt(1l)engine oil.
R Red uce Engine OilLevel andthebar displa y
fo rindica tingtheoil leve lon themultifunc ‐
tion displa yis orang eand isabo ve"max ": 0007
Drain offexc ess engine oilthat has been
added. Consult aqu alif ied spec ialistwo rk‐
shop.
R For Engine OilLevel Switch Ignition On: 0007
Switc hon theignition tocheckth eengine oil
le ve l.
R Engine OilLeve lSyst emInoperat ive:sensor
fa ulty ornotins erted. 0007
Consult aqu alif ied spec ialistwo rkshop.
R Engine OilLevel System Currently Unavail.: 0007
Close thehood.
Ad ding engine oil 000A
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine ,th e
ra diat orand partsof theex haus tsy stem. 0007
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. Maint
enanceand care355

Chec
kingcoolant leve l 000A
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine, the
ra diat orand partsof theex haus tsy stem. 0007
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. 000A
WARNIN GDang erofburnswhen open‐
ing thehood
If yo uopen thehood when theengine has
ove rheat edordur ing afire intheengine
com partmen t,yo uco uld come intoco ntact
wit hho tga ses orother escaping operating
fl uids. 0007
Beforeopen ingthehood, allowthe
engine tocool down. 0007
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. 000A
WARNIN GRisk ofscal ding from hot
cool ant
The enginecool ingsystem ispressur ized,
par ticular lywhen theengine iswa rm.If yo u
open thecap, youco uld bescalded byhot
coolant spraying out. 0007
Letth eengine cooldown beforeopen‐
ing thecap. 0007
When opening thecap, wearprotect ive
gl ove sand safetygl asses . 0007
Open thecap slowlyto release pres‐
sur e. 0007
Park theve hicle onaleve lsur face. 0007
Checkth ecoolant temp eratur edispla yin the
ins trumen tclus ter.
The coolant temp eratur emus tbe belo w
15 8°F (70 °C). 0007
Slowly turncap 1count er-cloc kwise to
re lie ve ove rpressur e. Maint
enance andcare35
7

If
th eindicat or/warning lampsintheins trument
clus terdo notlig ht up atlow temp eratur es,itis
ve ry likelyth at thedisc hargedbatt eryhas fro‐
zen .In this case youma yne ither jump-start the
ve hicle norcharge thebatt ery.
The service life of abatt eryth at has been
th awe dma ybe dramaticall yshor tened .The
st ar tin gch aract eristic sma ybe impair ed,espe ‐
ciall yat low temp eratur es.
It is recomme ndedthat youha ve ath aw ed bat‐
te ry checkedat aqu alif ied spec ialistwo rkshop.
All vehicl es
Plug-i nhy brid: obser vetheno tesin theSupple‐
ment .Ot her wise, youma yfa ilto recogni zedan‐
ge rs.
000E NO
TEDama gecau sed bynum erou sor
ex tende datt em ptsto star tth eengine Nu
me rous orextende datt em ptsto star tth e
engine maydamag eth ecat alytic converter
due tonon-co mbusted fuel. 0007
Avoid numer ousand extende datt em pts
to star tth eengine. Obser
vethefo llo wing pointsdur ing star tin g
assis tance and when chargin gth ebatt ery:
R Onlyuse undamag edjum per cables/c harg‐
ing cables withasuf ficie ntcross -secti onand
insu late dte rm inal clam ps.
R Non-insulat edpar tsof thete rm inal clam ps
mus tno tcom eint ocon tactwi th other metal
par tswhile thejum per cable/c harging cable
is con nect edtothebatt ery/jum p-start con‐
nectio npoi nt.
R The jumper cable/c harging cable mustno t
com eint ocon tactwi th anypar tswhic hma y
mo vewhen theengine isrunning .
R Alw aysmak esur eth at nei ther youno rth e
batt eryis elect rostatic allych arge d.
R Keep away from fire and open flames .
R Donotlean overth ebatt ery.
Obser vetheadditional follo wing pointswhen
ch argin gth ebatt ery:
R Onlyuse batterych arge rs tested and
appr oved forMer cedes-Benz.
R Read thebatt erych arge r's oper ating instruc‐
tions beforech argin gth ebatt ery. Obser
vetheadditional follo wing pointsdur ing
st ar tin gassis tance:
R Startin gassis tance mayonly beprov ided
using batteries withanom inalvoltag eof
12 V.
R Theve hicles mustno tto uc h.
R Gasoline engine :On lyacc eptst ar tin gassis ‐
ta nce ifth eengine andexhaus tsy stem are
cold. St
arting assistance andchargin gth e12 V
batt ery Re
quirement s:
R The vehicle issecur edwithth eelectr icpar k‐
ing brak e.
R Automatic trans mis sion :The trans missi on
is in po sitio n005D.
R The igniti onand allel ectr icalcons umersar e
sw itchedof f.
R The hoodis op en. Br
ea kdo wnassist anc e37
9

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
Check Engine OilLevel
(Add 1quart) 000E
NO
TEEngi nedama gecau sed bydriving withinsuf ficie ntengi neoil 0007
Avoid long journeys wit hins ufficie ntengi neoil. 0007
Whe nne xt refuel ing, add 1qu artof eng ineoil.
To pup engin eoil (0013 page355) .
No teson engine oil(0013 page42 7).
00B2 Check Engine OilAtNext
Refuel ing *T
heengine oilleve lhas dropped totheminimum leve l.
000E NO
TEEngi nedama gecau sed bydriving withinsuf ficie ntengi neoil 0007
Avoid long journeys wit hins ufficie ntengi neoil. 0007
Checkth eengine oilleve lwhen next refuel ing.
Ad dengin eoil (0013 page355 ).
No teson engine oil(0013 page42 7). Tr
ansmis sion Di
spla ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
* The transmission ismalfunct ioning.Thetransmission shiftsto position 005Cautomatic ally. Dis
play messa gesand warning/ indic ator lam ps 463