check engine MERCEDES-BENZ A CLASS 2023 Owners Manual

1
003E003D Turn sign allights →
113
2 0075 Restr aint system →
387
3 00BB ESP®
OF F →
397
00E5 ESP®
→
397
4 005E Rear foglam p →
113
5 0057 Highbeam →
113
0058 Lowbea m →
112
0060 Parking lamps →
112
6 ÿ Coolant temp eratur e →
389
7 Coolant temp eratur edispla y →
206
8 0024 Electricpar king brak e(yello w) →
393
9 00C6 Recuper ativeBr ak eSy stem, USAonl y →
393
004D Brak es (yello w), Canada only →
393
A 003D Electricalmalfu nction →
389
B L Distance warning →
396 C
0025 ABS →
397
D Ù Powe rst eer ing →
388
E 0077 Tire pressur emonit oring system →
399
F 00B6 Reser vefuel with fuel /ller 0aploca tio n
ind icat or →
389
G Fuelleve l →
206
H Electr icpar king brak e(red) →
393
0049 USAonl y
0024 Canada only
I Brak es (red) →
393
0027 USAonl y
004D Canada only
J 00E9 Seatbelt →
387
K 00B9 CheckEngine →
389
L ä Indicat orlam pinoper ative At
aglan ce–Indi catorand warning lamps(Widescr eenCockpit)
13 13

#
T T
o switc o
switc hon t h
on the v he
vehicle: ehicle:
press button1
twice.
Indicat orand warning lampsgo on inthe
inst rument cluster.
The vehicle isswitc hedo.again ifone ofthefo l-
lo wing conditions isme t:
R V V
ehicles wit ehicles
withaut h
aut omatic tr omatic
transmiss ion: ansmiss
ion:Youdo
no tst ar tth eve hicle within 15min utes and the
tr ansm ission isin pos ition 005Dortheelectr ic
par king brak eis applied.
R Youpr ess button1 once. SS
t t
ar ar
ting t ting
the v he
vehicle ehicle
SS
t t
ar ar
ting t ting
the v he
vehicle wit ehicle
witht h
the st he
star ar
t/s t t/s
top butt op
butt on on
&
D D
AN AN
GER GER
Riskoffata linjur iescaused by
ex haus tga ses
Combu stion enginesemit poison ousexhaus t
ga ses, suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealth
and leads topoisoning . #
Neverru nth eve hicle and,ifpr esen t,the
st at iona ry heat erind oor swit hout su1-
cient ventila tion. &
W W
ARNI NG ARNI
NGRisk of/redue to0amma ble
mat erial intheengine compartment orthe
ex haus tsy stem
Flammab lemat erials mayign ite. #
Ther efor e, checkre gula rly th at ther ear e
no 0amma blemat erials intheengine
com partment oron theex haus tsy stem. RR
eq eq
uir uir
emen ts: emen
ts:
R The Smar tKey isin theve hicle andisrecog-
niz ed. #
ShiT thetransmission toposition 005Dor005C. #
Depr essthebr ak epedal andpress button1
once. #
Ifth eve hicle does notst ar t:switc ho. non -
essen tialconsu mersand press button1
once . #
Ifth eve hicle still does notst ar tand thedis-
pla ymessag ePlace theKey inthe Marked Space
SeeOperator's Manualappear sin the
inst rument displa y:sta rttheve hicle withth e
Sma rtKe yin themar kedspace (emergency
ope ration mode )(/ page129).
% Youcan switc ho. theve hicle while drivi ng .To
do this, press button1 forabout thre esec-
onds orby pressing button1 thre etimes
wit hin thre eseconds. Besureto obser vethe
saf etyno tesund er"Dr iving tips"
(/ page132).
Obser veanyinf ormatio nre ga rding displa ymes-
sag esthat can bedispl ayed on theinst rument
displa y.
S S
t t
ar ar
tin gt tin
gthe v he
vehicle wit ehicle
witht h
the Smar he
Smar tKe tK
ey in t y
in the he
mar k mar
ked space (emerg ed
space (emergency oper ency
operationmode) atio
nmode)
If th eve hicle does notst ar tand thePlace the
Key inthe Marked SpaceSeeOperator's Manual
messag eappear sin theinst rument displa y,yo u
can star tth eve hicle inemer gency operation
mode . Dr
iving andparking
129 129

Mar
kedspace (exa mp lewit hcup holder without
co ver) #
Open theco verof mar kedspace 2ifneces-
sar y. #
Mak esur eth at mar kedspace 2isem pty. #
Remo veSma rtKe y1 from theke yring. #
Plac eSmar tKey 1 inmar kedspace 2on
symbol 3.
The vehicle willstar taTer ashor ttime .
When youre mo veSma rtKe y1 from mar ked
space 2,theve hicle canbedriven. Forfur -
th er engine star ts howev er,Smar tKey 1
must belocat edinmar kedspace 2onsym-
bol 3during theentir ejour ney. #
Have Sma rtKe y1 checkedat aqu ali/ed spe-
ciali stwo rkshop.
If t If
the v he
vehicle doesno ehicle
doesnotst t
st ar t: ar
t: #
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. #
Depr essthebr ak epedal andstar tth eve hicle
usin gth estar t/s topbutt on.
% Youcan switc hon thepo we rsuppl yor the
ve hicle withth estar t/s topbutt on.
Obser veanyinf ormatio nre ga rding displa ymes-
sag esthat can bedispl ayedon theinst rument
displa y. SS
t t
ar ar
tin gt tin
gthe v he
vehicle viaR ehicle
viaRemo t emo
te Onl ine Ser e
Onl ine Service s vice
s Cool
ingorheati ngt Cool
ingorheati ngthe v he
vehicle int ehicle
inter er
ior bef ior
before or
e
st st
ar ar
tin gt tin
gthe jou r he
jou rne y ne
y
Ensu rethefo llo wing beforestar ting theengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin estar ting via
smar tphone.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked.
R The fuel tank issu1 ciently full .
R The star terbatt eryis su1cien tly ch arge d.
Char Char
ging t ging
the st he
star t ar
ter batt er
batt er er
ybef y
bef or or
est e
star ar
ting t ting
the he
jour jour
ney ne
y
Yo ucan receiv eamessag eon your smar tphone
when thestat eof charge ofthestar terbatt eryis
lo w. Youcan then star tth eve hicle withth esmar t-
phone tocharge thebatt ery. The vehicle isaut o-
matic allyswitc hedo.aTer tenminut es.
Ens ureth efo llo wing beforestar ting theve hicle:
R The legalstipul ation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin estar ting via
smar tphone. 130130
Dr
iving andparking

R
When theengine isoTen leTidling forlong
per iods
R Oper ation inpar ticular lydust ycondition s
and/or ifair -recir culation modeisfreq uentl y
used
In these orsimilar operating conditions, have the
int erior air/lter,air /lter,engine oiland oil/lter,
fo rex am ple, chang edmor efreq uen tly. The tires
must becheckedmor efreq uentl yif th eve hicle is
oper ated und erincr eased loads. Further informa-
tion canbeobt aine dat aqu ali/ed special istwo rk-
shop. Bat
t Bat
ter er
ydiscon nectionper y
discon nectionperiods iods
The
ASSYST PLUS service interva ldispla ycan cal-
culat eth eser vice duedateonl ywhen thebatt ery
is connect ed. #
Displa yand note down theser vice duedate
on theinst rument displa ybef oredisconne ct-
ing thebatt ery(/ page257). Engine
com Engine
compar par
tment tment
Opening
andclosing t Opening
andclosing the hood he
hood &
W W
ARNIN G ARNIN
GRisk ofaccident duetodriving
wit hth ehood unlocked
The hood mayope nand blockyour vie w. #
Neverre lease thehood when driving. #
Beforeev erytrip, ensur eth at thehood is
loc ked. &
W W
ARNIN G ARNIN
GRisk ofaccident andinjury
when openingand closin gth ehood
The hood maysuddenl ydr op intoth eend
position.
Ther eis arisk ofinjuryfo ran yone inthe
hood's rang eof mo vement. #
Donotopen orclose thehood ifth er eis
a per son inthehood's rang eof mo ve-
ment. &
W W
ARNIN G ARNIN
GRisk ofbur nswhen openin gth e
hood
If yo uopen thehood intheev ent ofan ove r-
heat edeng ineor/rein theengine compart-
ment, thefo llo wing situations mayoccur :
R Youma ycome intocont actwithho tga ses.
R Youma ycome intocont actwithot her
escapin gho toper ating0uids. #
Beforeopen ingthehood, allowthe
engine tocool down. #
Intheev ent ofa/r ein theengine com-
par tment, keep thehood closed andcall
th e/r eser vice. &
W W
ARNIN G ARNIN
GRisk ofinjur ydue tomo ving
par ts
Com ponen tsintheengine compartment may
continue torunor star tune xpectedl yev en
when thedr ive sy stem isswitc hedo..
Obser vethefo llo wing ifyo umust open the
hood: 258258
Main
tenanc eand care

#
Drain o.anyex cess engineoilthat has been
added. Todo so, consult aqua li/ed specialist
wo rkshop.
R For Engine OilLeve lSwi tch Ignition On #
Switchon theve hicle tocheckth eengine oil
le ve l.
R Engine OilLevel System Inoperative: Theoil
le ve lsensor isdef ectiv eor notconnect ed. #
Consult aqua li/ed specia listworkshop.
R Engine OilLeve lSys tem Currentl yUnav ail. #
Close thehood.
T T
opping upengine oil opping
upengine oil &
W W
ARNIN G ARNIN
GRisk ofbur nsfrom hotcom po-
nent partsintheengine compartment
Cer tain com ponent partsintheengine com-
par tment canbevery hot,e.g .th eengine, the
cooler andpartsof theex haus tsy stem. #
Allow theengine tocool down and only
to uc hcom ponent partsdescr ibedinthe
fo llo wing. &
W W
ARNIN G ARNIN
GRisk of/reand injur yfrom
engine oil
If engine oilcomes intocont actwithho tcom-
ponent partsintheengine compartment, it
ma yignit e. #
Mak esur eth at no eng ineoilisspill ed
ne xt to the/ller opening. #
Allo wtheengine tocool o.and thor -
oughl yclean theengine oilfrom com po-
nent partsbef orestar ting theve hicle. *
N NO O
TE TE
Eng inedamag ecaused byan inco r-
re ct oil /lter,incor rect oil oradditi ves #
Donotuse engin eoils oroil /lterswhic h
do notcor respond tothespeci/c ations
ex plicitl ypr escr ibed forth eser vice inter-
va ls. #
Followtheinst ruction son theser vice
int erva ldispla yfo rch ang ingtheengine
oil and obser vethepr escr ibed chang e
int erva ls. #
Donotuse additiv es. *
N NO O
TE TE
Damag ecaused byre/lli ng too
muc hengi neoil To
omuc hengin eoil can damag eth eengine or
th ecat alytic converter . #
Have excess engineoilremo vedat a
qu ali/ed special istwo rkshop. %
Depen dingon drivi ng style, theve hicle con-
sumes upto0.9 USqt(0.8 liter) ofoil per
600 miles (1000 km).Theoilconsum ption
ma ybe higher than this when theve hicle is
ne wor ifyo ufreq uentl ydr ive at high engine
speeds. Maint
enance andcare
261 261

KK
eeping t eeping
the air he
air-w -w
at at
er duct fr er
duct free ee
#
Keep thear ea between thehood andthe
wind shield free ofdeposi ts,e.g.ice, snowand
lea ves. ChecChec
kingt king
the br he
brak ak
epad t epad
thic hic
kness kness #
Bring theve hicle andwheels intoasuit able
posit ionsothat youcan position thega ug e.
% The positioning ofgaug e3 depends onthe
ve hicle equipme nt.The gaug eis positioned at
point 3,whic his locat edeither inthecent er
of thebr ak epad orattheupper endtothe
side, depen dingon thebr ak ecaliper . #
Switc ho. theengine. #
Secur eth eve hicle agains tro lling away. #
Take thega ug eout oftheve hicle docume nt
wa lletin theglo vebox. #
Place thega ug ebe tween thewheel's spokes
in position 3onthebr ak epad. #
Hold thega ug eve rticall yto thebr ak edisc and
slide measur ingpin 2ontobr ak edisc 1. #
Chec kwhic hcolor /eld4thear ro w on
measur ingpin ispoin tingto .
Gr Gr
een: een:
thebr ak epad thickness issu1cien t.
R R
ed: ed:
thebr ak epad thickness isno tsu1cien t.
Ha ve thebr ak epads checkedat aqu ali/ed
special istwo rkshop. %
Toavo idan inaccur atemeasur ement:
R Mak esur eth ewheels aresuit ablyposi-
tioned.
R Inthecase ofper fora tedbr ak ediscs, do
no tput themeasur ingpin onone ofthe
bor esinthebr ak edisc. Cleaning
andcare Cleaning
andcare NNo o
t t
es on w es
on washing t ashing
the v he
vehicle inacar w ehicle
inacar wash ash
&
W W
ARNIN G ARNIN
GRisk ofaccident dueto
re duced braking e.ect aTerwashing the
ve hicle
The braking e.ect isreduced aTerwashing
th eve hicle. #
ATer theve hicle hasbeen washed, brak e
car efull ywhile paying attent ion tothe
tr a1 cco nd itio ns untilth ebr aking e.ect
has been fullyre stor ed . 26
4 26
4 Ma
intena ncean dca re

DisplaDispla
ymessag y
messag es P es
Possible causes/conseq ossible
causes/conseq uencesand uences
and0050 0050
Soluti ons Soluti
ons
Pla cethe Key inthe
Marked SpaceSeeOpera -
tor's Manua l *S
mar tKey detection ismalfu nctionin g. #
Chang eth elocation oftheSmar tKey intheve hicle. #
Place theSmar tKey inthemar kedspace forst ar ting theengine withth eSmar tKey (/ pag e129). LightsLights
DisplaDispla
ymessag y
messag es P es
Possible causes/conseq ossible
causes/conseq uencesand uences
and0050 0050
Solut ions Solut
ions
:
Check LeftLow
Beam (exa mp le) *T
hecor respond inglight sour ceisdef ecti ve. #
Drive on car efull y. #
Visit aqu ali/ed special istwo rkshop immed iately.
% LED light sources: thedispla ymessag efo rth ecor respond inglight appear sonl ywhen allthelight-emittin gdiodes
in thelight arefa ulty .
: Malfu nction See Opera-
tor’s Manual *T
heexterior lightin gis malfunct ioning. #
Consult aquali/ edspecialist workshop. Displ
aymessag esand warning/in dicatorlam ps
343 343

DisplaDispla
ymessag y
messag es P es
Possible causes/conseq ossible
causes/conseq uencesand uences
and0050 0050
Soluti ons Soluti
ons #
Neverre lease thehood when driving. #
Beforeev erytrip, ensur eth at thehood isloc ked. #
Stop theve hicle immed iatelyin accor dance withth etra1c conditions. #
Close thehood.
0084 *T
hetrunk lidisopen . &
D D
AN AN
GER GER
Riskofexhaus tga spoison ing
Combu stion enginesemit poison ousexhaus tga ses suchas carbon monoxide.Exhaus tga ses can entertheve hicle
int erior ifth etrunk lidisopen when theve hicle isrunning, especiallyif th eve hicle isin mo tion. #
Alwaysswitc ho. theve hicle beforeopen ingthetrunk lid. #
Neverdr ive wit hth etrunk lidopen. #
Close thetrunk lid.
00B2 Check WasherFluid *T
hewasher 0uidleve lin thewa sher 0uidreser voirhas dropped belowtheminimum. #
Addwa sher 0uid(/page263) .
Wi per Malfunctioni ng
*Thewind shield wipersar emalf unct ioning. Displ
aymessag esand warning/in dicatorlam ps
349 349

DisplaDispla
ymessag y
messag es P es
Possible causes/conseq ossible
causes/conseq uencesand uences
and0050 0050
Soluti ons Soluti
ons
00BD
Check CoolantLevel See
Opera tor'sManua l *T
hecoolan tle ve lis toolow.
* N N
O O
TE TE
Engine damagedue toinsu1c ientcoolant #
Avoid long journeys wit hinsu1cient coolant. #
Addcoolant (/page262). #
Have theengine cooling system checkedat aqu ali/ed special istwo rkshop.
ÿ
Co olant Too HotStop Vehi-
cle Turn Engine Off *T
hecoolan tis tooho t. #
Stop immediat elyin accor dance withth etra1c conditions andswitc ho. theve hicle. &
W W
AR NIN G AR
NIN GRisk ofbur nswhen openingthehood
If yo uopen thehood intheev ent ofan ove rheat edengine or/rein theengine compartment, thefo llo wing situa-
tions mayoccur :
R Youma ycome intocont actwithho tga ses.
R Youma ycome intocont actwithot her escapin gho toper ating0uids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheev ent ofa/r ein theengine compartment, keep thehood closed andcallthe/r eser vice. #
Waituntil theengine hascooled down. Displa
ymessag esand warning/in dicatorlam ps
351 351

DisplaDispla
ymessag y
messag es P es
Possible causes/conseq ossible
causes/conseq uencesand uences
and0050 0050
Soluti ons Soluti
ons
003D
Stop Vehicl eLeave Engine
Ru nning *T
he12 Vbatt erych arge leve lis toolow. #
Stop theve hicle immed iatelyin accor dance withth etra1c conditions. Donotcontinue driving. #
Leavetheve hicle running #
Ifth edispla ymessag edisappear s:drive on. #
Ifth edispla ymessag edoes notdisappear :consult aqua li/ed specialist workshop. TT
ir ir
e pr e
pr essur essur
emoni t e
moni tor or
Displ
a Displ
ay messag y
messag es P es
Possible causes/ conseq ossible
causes/ consequen ces and uen
ces and 0050 0050
Sol utions Sol
utions
Ti re Pre ss. Moni torCur-
rentl yUnav ailabl e *T
her eis int erfere nce from apo we rful radio signal sourceAs are sult ,no sign alsfrom thetir epr essur esensor sar e
being receiv ed.The tirepr essur emonit oring system istemp orarily una vailable.
The tirepr essur emonit oring system will restar tau tomaticall yas soon asthecause hasbeen recti/ed. #
Drive on.
Tir ePres s.Moni torInope ra-
tive *T
hetirepr essur emoni toring system isma lfunct ioning . &
W W
ARNI NG ARNI
NGTher eis arisk ofan acciden tif th etir epr essur emonit oring system ismalfunctionin g
The tirepr essur emonit oring system canno tissue awa rning ifth er eis pressur eloss inone ormor eof thetir es.
Ti re swit hinsu1cie nttirepr essur ema yim pair thedr iving charact eristics aswellas steer ing and braking. #
Have thetir epr essur emonit oring system checkedat aqu ali/ed special istwo rkshop. Displ
aymessag esand warning/in dicatorlam ps
379 379