2023 MERCEDES-BENZ A CLASS ECU

#
Sele ctArtist sor Song inthedialog window.
The alertisse tfo rth ecur rent artist ortrac k.
If amatc his found, apr om ptappear sasking
whe ther youwish tochang eto thestation.
A A
ctiv ctiv
ating spor ating
sportsinf ts
infor or
mation mation
#
ActivateAct ivate Sport sAlert s0073.
Se Se
tting aspo r tting
aspo rt aler t t
aler t #
Select AddAlert . #
Select thete am name orleag ueinthedialog
windo w.
Dele Dele
tingindividual spor ting
individual sportsand music aler ts
and music alerts ts
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Select ManageMusi cAlerts.
or #
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or #
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tingallspor ting
allspor tsand music aler ts
and music alerts ts
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or #
Select ManageSports Alerts. #
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All aler tsaredele ted. Soun
dse Soun
dse ttin gs ttin
gs OvOv
er er
vie vie
wof fun ctions int w
of fun ctions inthe sound menu he
sound menu The
settin gop tions andfunctions availabl e
depen don thesound system installed. Youcan
/n dout whic hsound system isinst alled inyour
ve hicle intheDigit alOper ator's Manual.
S S
t t
andar andar
dsound syst d
sound system and A em
and Adv dv
anced soundsy anced
soundsys- s-
t t
em em
The follo wing functions areav ailabl e:
R Equaliz er:
- Treble, mid-rangeand bass
R Balance andfader
R Volume:
- Automatic adjustment Bur Bur
mest mest
er er
® ®
sur r sur
round sound syst ound
sound system and em
and
Bur Bur
mest mest
er er
® ®
high-en d3D surr high-en
d3D surround sound syst ound
sound system em
The follo wing functions areav ailabl e:
R Equaliz er:
- Treble, mid-rangeand bass
R Balance andfader
R Soun dfo cus
R VIP seat (Burmes ter®
high- end3Dsurround
sound system only)
R Sound pro/les
R Volume:
- Automatic adjustment 256256
MBUX
multimed iasystem

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

&
W W
ARNI NG ARNI
NGRisk ofexplosion from afrozen
batt ery
A disc hargedbatt eryma yfreeze attemp era-
tur es slightl yabo veorbelo wfreezin gpoint.
Dur ingstar ting assist anceorbatt erych argin g,
batt eryga scan bereleased. #
Alwaysallo wabatt eryto thaw before
ch argin git or per form ing star ting assis -
ta nce. If
th eindicat or/warning lampsintheinst rument
clust erdo notlight upatlow temp eratur es,itis
ve ry likelyth at thedisc hargedbatt eryhas frozen.
In this case youma yneit her jump-st artth eve hi-
cle nor charge thebatt ery.
The service life of abat tery that has been thawe d
ma ybe dramaticall yshor tened. Thestar ting char-
act eristics maybe impair ed,especi allyat low
te mp eratur es.
It is recommen dedthat youha ve ath awe dbatt ery
ch eckedat aqu ali/ed special istwo rkshop. *
N NO O
TE TE
Damag ecaused bynume rous or
ex tended attem ptsto star tth eengine Numer
ousorextended attem ptsto star tth e
engine maydamag eth ecat alytic converter
due tonon-c ombusted fuel. #
Avoid numer ousand extended attem pts
to star tth eengine. Obser
vethefo llo wing points during star ting assis -
ta nce and when chargin gth ebatt ery:
R Onlyuse undamag edjum per cable/c harging
cables withasu1cient cross-section and
insulat edterm inal clam ps.
R Non-in sulatedpar tsof thete rm inal clam ps
must notcome intocont actwithot her metal
par tswhile thejum per cable/c harging cable
is connect edtothebatt ery/jum p-startcon-
nection point.
R The jumper cable/c harging cable mustnot
come intocont actwithan ypar tswhic hma y
mo vewhen theengine isrunning.
R Alwaysmak esur eth at nei ther younor thebat-
te ry iselectr ostaticall ych arge d. R
Keep awa yfrom /reand open 0ames.
R Donotlean overth ebatt ery.
Obser vetheadditional follo wing points when
ch argin gth ebatt ery:
R Onlyuse batterych arge rs tested and
ap pro vedfo rMer cedes-Benz.
R Read thebatt erych arge r's oper ating instruc-
tion sbef orech argin gth ebatt ery.
Obser vetheadditional follo wing points during
st ar ting assist ance:
R Forst ar ting assist ance, onlyuse batteries with
a nominal voltag eof 12 V.
R The vehicles mustno tto uc h.
R Gasoline engine: Gasoline
engine:Onlyaccep tst ar ting assis -
ta nce ifth eengine andexhaus tsy stem are
cold. SS
t t
ar ar
tin gassis t tin
gassis tance andc ance
andchar har
gingt gin
gthe 12 Vbatt he
12 Vbatt ery er
y RR
eq eq
uir uir
emen ts: emen
ts:
R The vehicle issecur edwithth eelectr icpar k-
ing brak e. 282282
Br
eakdo wnassist ance

*
N N
O O
TE TE
Dam agedue toexcessiv etractiv e
po we r If
yo upull awayshar ply, thetractiv epo we r
ma ybe toohigh andtheve hicles couldbe
damag ed. #
Pullawa yslo wly and smoo thly. Loading
t Loading
the v he
vehic lef ehic
lefor tr or
transpo rt anspo
rt #
Obser vetheno teson towing away
( / pag e285). #
Connect theto wing device totheto wing eye
in order toload theve hicle. #
V V
ehicle swit ehicle
swit haut h
aut omati ctr omati
ctransmi ssion: ansmi
ssion:ShiT
th eaut omatic transmission toposition 005C.
% V V
ehicles wit ehicles
withaut h
aut omatic tr omatic
transmission: ansmission:
The
aut omatic transmission maybe lockedin posi-
tion 005Dintheev ent ofdamag eto theelectr i-
cal system. ToshiT to005C ,pr ov ide theon-
boar delectr icalsystem withpo we r
( / pag e282). #
Load theve hicle ontoth etranspor ter. #
V V
ehicles wit ehicles
withaut h
aut omatic tr omatic
transmission: ansmission:
ShiT
th eaut omatic transmission toposition 005D. #
Use theelectr icpar king brak eto secur eth e
ve hicle agains tro lling away. #
Onlysecur eth eve hicle bythewheels.
V V
ehicles wit ehicles
withadap h
adap tiv tiv
edam e
dam ping adjus ping
adjustmen t tment
&
W W
ARNIN G ARNIN
GRisk ofan accident whentrans-
por ting vehicles withadap tivedam ping
adju stmen t
When transpo rting vehicles withadap tive
dam pingadju stmen t,theve hicle/ trailer com-
bin ation maybeg into rock and star tto skid. #
Load theve hicle correctl yont oth e
tr ansp orter. #
Sec ureth eve hicle onallfour wheels
wit hsuit able tensio ning straps . #
Donotex ceed themaximum permissible
speed of35 mph(6 0km /h)wh en tran s-
po rting. *
N NO O
TE TE
Damag eto theve hicle from secur -
ing itinco rrectl y #
ATer loading, theve hicle mustbe
secur edon allfour wheels. Other wise,
th eve hicle could bedamag ed. #
Amin imum distance of8in (20 cm)
upw ards and 4in (10 cm) down wards
must bekept tothetranspor tplatf orm. #
Secur eth eve hicle onallfour wheels aTer
loading.
4MA 4MA
TICv TIC
vehicles/v ehicles/v
ehicleswit ehicles
withaut h
aut omatic tr omatic
trans- ans-
mission mission Br
eakdo wnassist ance
287 287

#
Vehicles withan aut omati ctransmi ssionmust
no tbe tow- star ted. ElectrElectr
icalfuses ical
fuses NNo o
t t
es on electr es
on electr icalfuses ical
fuses &
W W
ARNIN G ARNIN
GRisk ofaccident andinjurydue
to ove rloaded lines
If yo umanipulat eor bridg eafa ulty fuse orif
yo ure place itwit hafuse withahigher amper -
ag e, theelectr icline could beove rloaded.
This could result ina/r e. #
Alwaysre place faulty fuses withspeci-
/ed newfuses containing thecor rect
am per age. *
N NO O
TE TE
Damag edue toincor rect fuse s Electr
icalcom pone ntsorsystems maybe
damag edbyincor rect fuse s,or their function -
ality maybe sign i/can tly im pair ed. #
Onlyuse fuses that have been approved
by Mer cedes-Be nzand which ha ve the
cor rect fuse rating. Blo
wn fuses mustbereplaced withfuses ofthe
same rating, whichyoucan recogn izebythecolor
and thelabel. Thefuse ratings andfurther infor-
mation tobe obser vedcan befound inthefuse
assignment diagram.
F F
use assignmen tdiag r use
assignmen tdiag ram: am:
onthefuse boxin the
engine compartment (/page289).
* NO NO
TE TE
Damag eor malfunctions causedby
moist ure Mois
turema ycause damag eto theelectr ical
sy stem orcause itto malfun ction. #
When thefuse boxis open, makesur e
th at no mois turecan enterthefuse box. #
When closing thefuse box,mak esur e
th at theseal ofthelid ispositioned cor-
re ctl yon thefuse box. If
th ene wly inser tedfuse alsoblows,ha ve the
cause traced andrecti/ed ataqu ali/ed special ist
wo rkshop.
Ensur eth efo llo wing beforere placing afuse:
R The vehicle issecur edagains tro lling away.
R Allelec trica lcons umersareswitc hedo..
R The vehicle isswitc hedo..
The elect rical fuse sar elocat edinvarious fuse
bo xes:
R Fuse boxin theengine compartment onthe
leT-h andside oftheve hicle, when viewe din
th edir ection oftrav el (/ page289)
R Fuse boxin thefront passeng erfoot we ll
(/ page290)
R Fuse boxin thecent erofthetrunk
(/ page291) Opening
andclosing t Opening
andclosing the fuse bo he
fuse boxin t x
in the engine he
engine
com com
par par
tment tment
RR
eq eq
uir uir
ements: ements:
R Adr yclo thand ascr ewdriver areav ailabl e. Br
eakdo wnassis tance
289 289

Som
etir epr es su re tables onlysho wtherim diam-
et er inst ead ofthecom pletetiresize, e.g.R18 R18
.
The rim diame teris par tof thetir esize andcan
be found onthetir eside wall(/ page307).
R Tire and Loadi ngInformatio nplacar d
(/ page300)
R Maxim umtirepr essur e(/ page306) ChecChec
kingt king
the tir he
tirepr e
pr essur essur
emanu ally e
manu ally #
Read thetir epr essur ere commen dedforth e
cur rent ope rating condi tions from theTire and
Loadi ngInformatio nplacar dor thetir epr es-
sur eta ble. Obser vetheno teson tirepr essur e. #
Remo vetheva lve cap ofthetir eto be
ch ecked. #
Press thetir epr essur ega ug esecur elyont o
th eva lve. #
Read thetir epr essur e. #
Ifth etir epr essur eis lowe rth an there com-
mende dva lue, increase thetir epr essur eto
th ere commen dedvalue. #
Ifth etir epr essur eis higher than there com-
mende dva lue, release air.To do so, press
do wn theme talpin intheva lve, e.g. using the
tip ofapen. Then, checkth etir epr essur e
ag ain using thetir epr essur ega ug e. #
Screw theva lve cap ontoth eva lve.
Fu rther relat ed subjects:
R Noteson tirepr essur e(/ page293)
R Tire pressur eta ble (/ page295) R
Tire and Loadi ngInformatio nplacar d
(/ page300) TT
ir ir
e pr e
pr essur essur
emoni t e
moni tor or
ing syst ing
system em
FF
unct ionoft unct
ionofthe tir he
tirepr e
pr essur essur
emoni t e
moni tor or
ing syst ing
system em
&
D D
AN AN
GER GER
Riskofacciden tdue toincor rect
tir epr essur e
Eac htir e, incl udin gth espar e(if pro vided),
should becheckedmont hlywhen coldand
in0a tedto thein0 ation pressur ere commen -
ded bytheve hicle manu factur eron theve hi-
cle placar dor tirein0ation pressur elabel .(If
yo ur vehicle hastires ofadi.er entsize than
th esize indicat edon theve hicle placar dor
tir ein0ation pressur elabel ,yo ushould deter-
mine thepr oper tirein0 ation pressur efo r
th ose tires.)
As anadded safetyfe atur e,your vehicle has
been equipped withatir epr essur emoni toring
sy stem (TPMS) that illu min ates alow tirepr es-
sur ete lltale when oneormor eof your tires is
sign i/ca ntly under -in0at ed. Accor ding ly,when 296296
Wheel
sand tires

R
Tire pressure willbedisplay edafter driving a
few minutes
R Tire Pressure MonitorActive: thete ac h-in
pr ocess ofthesy stem isno tyet com plete.The
tir epr ess ures arealr eady being monitored. #
Com pareth etir epr essur ewit hth ere com-
mende dtir epr essur efo rth ecur rent ope rating
condi tion(/page295) .Ad ditionall y,obser ve
th eno teson cold tires (/ page293).
% The values displa yedin theon-boar dcom-
put erma yde viat efrom those ofthetir epr es-
sur ega ug eas they referto sea leve l.At high
ele vations, thetir epr essur eva lues indicat ed
by apr essur ega ug ear ehigher than those sho
wnbytheon-boar dcom puter.In this case,
do notre duce thetir epr essur e.
R R
est est
ar ar
ting t ting
the tir he
tirepr e
pr essur essur
emonit e
monit or or
ing syst ing
system em
R R
eq eq
uir uir
ements: ements:
R The recommen dedtirepr essur eis cor rectl y
se tfo rth ere specti veoper ating status onallof
th ewheels (/page293).
Re star tth etir epr essur emonit oring system inthe
fo llo wing situations:
R The tirepr essur ehas chang ed.
R The wheels ortires have been chang edor
ne wly installed.
On-boar dcom puter:
4 Service 5
Tires #
Swipe down wardson Touc hContr olon the
leT-h andside ofthesteer ing wheel.
The Use Curre ntPressure sas New Refer-
ence Valuesmessag eis sho wnintheInstr u-
ment Displa y. #
Torestar t,pr es sTo uc hContr olon theleT-
han dside ofthesteer ing wheel.
The Tire Press. Monitor Restarted messageis
sho wnintheInstr ument Display.
Cur rent wa rning messa gesar edele tedand
th eye llo w0077 warning lampgoes out.
ATer youha ve been driving fora few minut es,
th esy stem checks whe ther thecur rent tire
pr ess ures arewit hin thespeci/ed rang e. The
cur rent tirepr ess ures areth en accep tedas
re fere nce values andmonit ored.
Be sureto also payatt ent ion tothefo llo wing rela-
te dto pic:
R Noteson tirepr essur e(/ page293) TT
ir ir
e pr e
pr essur essur
eloss w e
loss war ar
nin gsy st nin
gsy stem em
FF
unct ionoft unct
ionofthe tir he
tirepr e
pr essur essur
eloss w e
loss war ar
nin gsy st nin
gsy stem em
The tirepr essur eloss warning system warnsth e
dr iver by means ofdispla ymessag eswhen ther e
is ase vere tirepr ess ureloss . 298298
Whee
lsand tires

to
tread qualit y,tiretracti onand temp eratur e
ch aract eristics. Thequalit ygr adin gassessmen tis
made bythemanuf acturerfollo wing speci/ cations
fr om theU. S. government. Thequalit ygr ade ofa
tir eis im print ed on theside wallof thetir e.
R R
ecommended tir ecommended
tirepr e
pr essur essur
e: e:
there commen ded
tir epr essur eis thetir epr essur especi/ed forth e
tir es mount edtotheve hicle atthefa ct or y.
The tireand informa tion table cont ains there com-
mende dtir epr essur esforcold tires, themaxi-
mum permissible loadandthemaximum permissi-
ble vehicle speed.
The tirepr essur eta ble cont ains there commen -
ded tirepr essur esforcold tires under various
oper ating condition s,i.e. loading and/or speedof
th eve hicle.
Incr Incr
eased v eased
vehicle w ehicle
weig htdue t eig
htdue to op o
op tion aleq tion
aleq uip- uip-
men t: men
t:thecombined weight ofall standar dand
op tional equipment availabl efo rth eve hicle,
re ga rdless ofwhe ther itis actuall yinst alled onthe
ve hicle ornot.
Rim : Rim
:th epar tof thewheel onwhic hth etir eis
inst alled. G G
A A
WR (Gr WR
(Gross Axle W oss
Axle Weight R eight
Rating): ating):
theGA WR is
th emaximum permissible axleload. Theactual
load onanaxle must neverex ceed thegr oss axle
we ight rating. Thegross axle weight rating canbe
fo und ontheve hicle identi/cation plateon the
B‑pi llaron thedr iver's side.
Speed r Speed
rating: ating:
thespeed rating ispar tof thetir e
ident i/cation.Itspeci/es thespeed rang efo r
whic hatir eis appr oved.
G G
VW (Gr VW
(Gross V oss
Vehicle W ehicle
Weight): eight):
thegr oss vehicle
we ight comprises thewe ight oftheve hicle includ-
ing fuel, tools, thespar ewheel, accessories instal-
led, occupa nts,luggageand thetrailer draw bar
nose weight, ifapplica ble.Thegross vehicle weight
must notex ceed thegr oss vehicle weight rating
GV WR asspeci/ed ontheve hicle identi/cation
plat eon theB‑pillar onthedr iver's side.
G G
VWR (Gr VWR
(Gross V oss
Vehicle W ehicle
Weight R eight
Rating): ating):
theGV WR is
th emaximum permitt edgross weight ofthefull y
laden vehicle (weig htoftheve hicle includin gall
accessor ies,occupan ts,fuel, luggage and the
tr aile rdr aw bar nose weight ifapplica ble).The
gr oss vehicle weight rating isspec i/edon the
ve hicle identi/cation plateon theB‑pillar onthe
dr iver's side. Maximum
w Maximum
weight oft eight
ofthe laden v he
laden vehicle: ehicle:
themaxi-
mum weight isthesum ofthecurb weight ofthe
ve hicle, thewe ight oftheaccess ories, themaxi-
mum loadandthewe ight ofoptional equipment
inst alled atthefa ct or y.
Kilo pascal (kP Kilo
pascal (kPa) : a)
:me tric unit fortir epr essur e.
6.9 kPacor respond sto 1psi. Another unit fortir e
pr essur eis bar .100 kilopasc al(kP a)equals 1bar .
Load inde Load
index: x:
in addition totheload-bear inginde x,
th eload indexma yalso beimprint ed on theside
wa llof thetir e. This speci/es theload-bear ing
capac ityofthetir emor epr ecisel y.
Curb w Curb
weight: eight:
thewe ight ofave hicle withstandar d
eq uipme ntincl udin gth emaximum capacityof
fuel, oiland coolant. Italso includes theair condi-
tioning system and optional equipment ifth ese
ar einst alled ontheve hicle, butdoes notincl ude
passen gers or lugg age.
Maximum tir Maximum
tireload: e
load: themaximum tireload isthe
maximum permissible weight inkilog rams orlbs
fo rwhic hatir eis appr oved.
Maximum per Maximum
permissible tir missible
tirepr e
pr essur essur
e: e:
maximum
per missible tirepr essur efo rone tire. 310310
Wheels
andtires