check engine MERCEDES-BENZ CLA 2020 Owners Manual

1
Spee dometer →
215
2 003E003D Turn signal light →
114
3 Multifunction display →
220
4 0075 Restra int system →
517
5 Tach ome ter →
215
6 00BB ESP®
OFF →
525
00E5 ESP®
→
525
7 005E Rear foglight →
114
8 0057 Highbeam →
114
0058 Lowbeam →
113
0060 Parking lam ps →
113
9 ÿ Coolan tto oho t/c old →
519
A Coolan tte mp eratur edispla y →
215
B 0024 Electricpa rking brak e(yello w) →
522
C 003D Electrical malfun ction →
519
D L Distance warning →
524 E
0025 ABSmalfun ction →
525
F Ù Electric po we rst eer ing malfunct ion →
518
G 0077 Tire pressur emonit or →
528
H 0028 Thisindicat orlam phas nofunc tion
I 00D4 Fuelreser vewit hfuel filler cap locat ion
indic ator →
519
J Fuelleve lindic ator
K Elec tric par kingbr ak eapplied (red) →
522
0049 USAonl y
0024 Canada only
L 00E9 Seatbeltnotfa stened →
517
M Brak es (red) →
522
0027 USAonly
004D Canad aonly
N 00B9 CheckEngine →
519
O ä Thisindicat orlam phas nofunct ion At
aglanc e– Indicat orand warning lam ps(Widesc reen Coc kpit) 13

#
Toswitc hon thepo we rsupp ly:pr ess but‐
to n1 once .
Yo ucan activat eth ewindshield wipers,for
ex am ple.
The powe rsupp lyis switc hedoffag ain ifth efo l‐
lo wing condition sar eme t:
R Youopen thedr iver's door .
R Youpr ess button1 twice mor e. #
Toswitc hon theignit ion:press butt on1
twic e.
The indic ator lam psintheins trument cluster
light up.
The ignit ionisswitc hedoffag ain ifone ofthe
fo llo wing condition sis me t:
R Vehicl eswith automatic transmiss ion:
Yo udo notst ar tth eve hicle within
15 minut esand thetransmission isin posi‐
tion 005Dortheelectr icpar king brak eis
applied.
R Youpr ess button1 once . St
arting theve hicl e St
arting theve hicl ewith thest ar t/s topbut‐
to n &
DANG ER Risk ofdeat hcause dby
ex haus tga ses
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealt h
and leads topoisonin g. #
Neverlea vetheengine or,if pr esent ,
th eauxiliar yheating running inan
encl osedspa cewithout sufficie ntventi‐
la tio n. &
WARNIN GRisk offire due toflammab le
mat erial intheengine compartmen tor
th eex haus tsy stem
Flammable materials brought inby either ani‐
mals orenvironmen talinf luenc esma yignit e
if th ey come intocont actwith hotpar tsof
th eengine orexhaus tsy stem. #
Ther efor e, checkre gular lythat ther e
ar eno flammab lemat erials inthe
engine compartmen tor on theex haus t
sy stem. Re
quirement s:
R The Smar tKey isin theve hicle andisrecog‐
nized . #
Shif tth etra nsmiss iontoposition 005Dor005C. #
Depr essthebr ak epedal andpress butt on
1 onc e. Dr
iving andparking 13
1

#
Ifth eve hicle does notst ar t:switc hof fnon-
essential consumer sand press butt on1
once. #
Ifth eve hicle still does notst ar tand the
Place theKey inthe Marked SpaceSee
Operator's Manualdisplaymessag ealso
appear sin themultifunc tiondispla y:star t
th eve hicle inemer gency operati on mod e.
% Youcan switchoffth eengine whiledriving
by pressing button1 forabo utthre esec‐
onds orby pressing button1 thre etimes
wit hin thre esecon ds.Besureto obser vethe
saf etyno tesunder "Driving tips"
(/ page13 4).
St arting theve hicl ewith Smar tKey inthe
ma rked spa ce(emer gency oper ation mode)
If th eve hicle does notst ar tand thePlace the
Key inthe Marked SpaceSeeOperator 'sManual
messag eappear sin themultifunc tiondispla y,
yo ucan star tth eve hicle inemer gency operati on
mod e. Ma
rked space (exa mp lewit hcup holder without
co ver) #
Open theco verof mar kedspace 2ifnec es‐
sar y. #
Mak esur eth at mar kedspace 2isem pty. #
Remo veSmar tKey 1 from theke yring. #
Place Sma rtKe y1 inmar kedspace 2on
symbol 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. #
Have Smar tKey 1 checkedat aqu alif ied
spec ialistwo rkshop.
If th eve hicl edoes notst ar t: #
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. #
Depr essthebr ak epedal andstar tth eve hi‐
cle using thest ar t/ stop butt on.
% Youcan also switchon thepo we rsupp lyor
th eignition withth est ar t/ stop butt on. 13
2
Driving and parking

Pr
oblems withthetransm ission Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
The transmission hasafa ulty gearshif t. The
transm issionis losin goil. #
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. #
Pullove rand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions. #
Swi tchth etra nsmiss iontoposition 005D. #
Switc hof fth eengine. #
Waitat leas tte nseco ndsbefore restar tin gth eengine. #
Switc hth etra nsmiss iontoposition 005B. #
Have thetra nsmiss ioncheckedat aqu alif ied spec ialistwo rkshop immediat ely. Fu
nction of4MA TIC
4MA TICensur esthat all four wheel sar edr iven
when needed. Toget her withESP ®
and 4ETS,
4MA TICimprove sth etra ction ofyour vehicle
whene vera dr iven whee lspins duetoinsuf fi‐
cie nttracti on.
If yo ufa ilto adap tyo ur drivin gst yle, 4MA TICcan
neit her reduce therisk ofan accident norover‐ ri
de thelaws ofphysics. 4MA TICcannotta ke
acc oun tof road, weather and traf fic condi tions.
4MA TICisonly anaid. Youar ere sponsible espe‐
cially formaint ainingasaf edis tance from the
ve hicle infront, forve hicle speed, forbr aking in
good timeandforst ay ing inlane.
% Inwint ryroad con dition s,themaximum
ef fect of 4MA TICcan beachie vedonl yif yo u use
wint ertires (M+ Stir es), withsn ow
ch ains ifnec essar y. Dr
iving and parking 14
7

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. #
Notedown theser vice duedatedispla yedon
th eins trument displaybef orediscon necting
th ebatt ery(/ page38 4). Engine
compartment Opening/closing
thehood &
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. #
Neverunla tchth eengine hoodwhile
dr iving. #
Beforeev erytrip, ensur eth at the
engine hoodislatc hed. &
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. #
Onlyopen orclose theengine hood
when ther ear eno per sons inthe
engine hood's rang eof mo vement. &
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. #
Beforeopen ingthehood, allowthe
engine tocool down. #
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. &
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: #
Swi tchth eignition off. Maint
enanc eand care385

#
Push yello whandle 1onthehood catchto
th elef tas faras itwil lgo (pa lmdown wards).
Lif tth ehood untilitis aut omaticall yra ised
by thepneumatic stru t. #
Toclose: lowe rth ehood andletit fallfrom a
height ofappr oximat ely8 in (20 cm). #
Ifth ehood canstill be lifte dslightl y,open
th ehood again and close itwit halittle forc e
unt ilit en gage scor rectly . En
gine oil Che
cking theengine oilleve lusing theon-
boar dcom puter
Re quirement s:
R The engin ehas warmed up.
R The vehicle ispar kedon aleve lsur face.
R The engineisrunning atidle spe ed.
The engineoille ve 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 activ edr iving style.
On- boar dcom puter:
4 Service5
Engine OilLevel
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. #
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 1,1qts. andthebar dis‐
pla yfo rindica tingtheoil leve lon themulti‐
func tion displa yis orang eand isbelo w"min": #
Add1.1 US qt(1l)of engine oil.
R Red uce Engine OilLevel andthebar displa y
fo rindica tingtheoil leve lon themultifunc ‐
tion displa yis orang eand isabo ve"max ": #
Drain offan yex cess engineoilthat has been
added. Todo so, con sult aqu alif ied spec ialist
wo rkshop.
R For Engine OilLevel Switch Ignition On: #
Switc hon theignition tocheckth eengine oil
le ve l.
R Engine OilLeve lSyst emInoperat ive:sensor
fa ulty ornotins erted. #
Consult aqu alif ied spec ialistwo rkshop.
R Engine OilLevel System Currently Unavail.: #
Close thehood. Maint
enanc eand care38
7

Chec
kingthecoolant leve l &
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. #
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedin
th efo llo wing. &
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. #
Letth eengine cooldown beforeopen‐
ing thecap. #
When opening thecap, wearprotect ive
gl ove sand safetygl asses . #
Open thecap slowlyto release pres‐
sur e. #
Park theve hicle onaleve lsur face. #
Checkth ecoolant temp eratur edispla yin the
ins trumen tclus ter.
The coolant temp eratur emus tbe inthebo t‐
to m quarterof thete mp eratur edispla y. #
Slowly turncap 1cou nter-cloc kwiseto
re lie ve ove rpressur e. #
Continue turning cap1count er-cloc kwise
and remo veit.
The coolan tle ve lis cor rect inthefo llo wing
cases :
R Ifth eengine iscold, thecoolant isup to
mar kerbar 2.
R Ifth eengine iswa rm,th ecoolant isup to
0.6 in(1.5 cm) over mar kerbar 2. #
Ifnecessar y,add coolant that has been
appr ovedfo rMer cedes-Benz.
R Further information oncoolant
(/ page46 4). Ad
ding washer fluid tothewindsh ield
wa sher system &
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. Maint
enanc eand care389

*
NO
TEDama ging thebatt eryth ro ugh
ove rvolt age When
chargin gusin gabat tery charge rwit h‐
out amaximu mchargin gvo ltag e, thebatt ery
or theve hicle electr onics maybe damag ed. #
Onlyuse batterych arge rs wit hamax i‐
mum chargin gvo ltag eof 14.8 V. &
WARNIN GRisk ofexplosion from hydro‐
ge nga signiting
A batt eryge ner ates hydrog en gasdur ing the
ch argin gpr oce ss.Ifth er eis ashor tcir cuit or
spar ksstar tto form ,th er eis adang erofthe
hy drog en gasigniting. #
Mak esur eth at thepositiv ete rm inal of
th econ nect edbatt erydoes notcome
int ocon tact with vehicle parts. #
Neverpla ceme talobje ctsor tools ona
batt ery. #
When connectin gand disconn ectingth e
batt ery, yo umus tobse rveth edescr i‐
bed order forth ebatt eryclam ps. #
When giving star tin gassis tance, alwa ys
mak esur eth at youon lyconnect bat‐
te ry term inals withident icalpolar ity. #
Dur ing star tin gassis tance, youmus t
obse rveth edescr ibedorder forcon‐
necting anddisconnecting thejum per
cables. #
Donotcon nect ordiscon nectthebat‐
te ry cla mp swhile theengine isrunning . &
WARNIN GRisk ofexplosion during
ch argin gpr oce ssand star tin gassis tance
Dur ing thech argin gpr oce ssand star tin g
assis tance, thebatt eryma yre lease anexplo‐
siv ega smixtur e. #
Avoid fire ,open flames ,cr eat ing spar ks
and smoking. #
Mak esur eth at ther eis suf ficie ntventi‐
la tio ndu ring thech argin gpr oce ssand
dur ing star tin gassis tance. #
Donotle an ove ra batt ery. &
WARNIN GRisk ofexplosion from afro‐
zen battery
A disc hargedbatt eryma yfreeze attemp era‐
tur es slightl yabo veorbelo wfreezing point.
Dur ing star tin gassis tance orbatter ych arg‐
ing ,bat tery gasma ybe released. #
Alw aysth aw afroz en bat tery out firs t
bef orech argin git or per form ing star t‐
ing assis tance. 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. 41
0
Brea kdo wnassista nce

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Place theKey inthe
Marked SpaceSeeOpera-
tor's Manual *S
mar tKey detection ismal functi oning. #
Chang eth elocation oftheSmar tKey intheve hicle. #
Place theSmar tKey inthemar kedspace forst ar tin gth eengine withth eSmar tKey (/ pag e13 2).
Á
Don't ForgetYour Key *A
warning tone also sou nds. Thismes sage reminds youto take your keywit hyo uwhen youlea vetheve hicle. Lights
Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisfaulty . #
Drive on car efull y. #
Con sult aqu alif ied spec ialistwo rkshop immediat ely.
% LED lightbul bs: thedispla ymessag efo rth ecor responding lampappea rsonl ywhen allthelight- emitt ingdiodes
in thelam par efa ulty . 47
4
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Close thehood.
0084 *T
hetrunk lidisopen. &
DANG ER Risk ofexhaus tga spoisoning
Combus tionengines emitpoisonous exhaus tga ses suchas carbon monoxide.Exhaus tga ses can enterthe
ve hicle interior ifth etrunk lidisopen when theengine isrunning ,esp ecially ifth eve hicle isin mo tion. #
Alw aysswitc hof fth eengine beforeopening thetrunk lid. #
Neverdr ive wit hth etrunk lidopen. #
Close thetrunk lid.
00B2
Check Washer Fluid *T
hewasher fluid leve lin thewa sher fluid reser voirhas dropped belowtheminimum. #
Refill wa sher fluid (/ page38 9). 480
Displaymes sagesand warning/ indic ator lam ps