display MERCEDES-BENZ C-CLASS CABRIOLET 2021 Repair Manual

1
mebutt onforser vice orinformation calls
2 SOS buttoncover
3 SOS button
Maki ngaMer cedes mecall #
Press button 1. Maki
nganeme rgency call #
Toopen theco verof SOS button2, press it
br ief ly. #
Press and hold SOS button3 forat lea st
one second.
If aMer cedes mecall isactiv e,an emer gency
cal lcan still be trigg ered. This hasprior ity ove r
all other activ ecalls.
Inf ormat ionabout theMer cedes mecall
using theme button
A cal lto theMer cedes- BenzCustomer Cent er
has been initiatedvia theme butt onintheove r‐
head controlpanel orthemultimedia system.
Using thevo ice con trol system, youcan select
on eof thefo llo wing service s:
R Accid ent and brea kdo wnmana gement
(/ page28 7)
R Mer cedes-Benz Customer Centerforge ner al
inf orma tionab ou tth eve hicle
Yo ucan find informa tionon thefo llo wing topics:
R Activati on ofMe rcedes meconnect
R Oper ating theve hicle R
Near estaut hor ized Mercedes-Ben zCent er
R Other products andservices from Mer cedes-
Benz
Dat ais transf erreddur ing thecon nect iontothe
Mer cedes-Ben zCus tomer Cent er(/ page286).
Call ingtheMer cedes- BenzCustomer Center
usi ng the multi mediasy stem
Re quirement s:
R Youha ve acc ess toaGSM network.
R The cont ract partner' sGSM networkco ver‐
ag eis available inthere spectiv ere gion.
R The ignition isswitc hedonsothat vehicle
dat acan betransf erredaut omatic ally.
Multimedia system:
4 Phone 5
ª Contac ts #
Call Mercedes meconnect.
The callismade.
Af terconf irmation, themultimedia system
sends there qu ired vehicle data.The data
tr ansf erissho wninthemedia display. 28
4
Multimedia system

An
eme rgency callcan bemade automatical ly
( / pag e289) ormanuall y(/ page289 ).
Onl ymak eemer gency callsifyo uor other sar e
in need ofrescue. Donotmak ean emerg ency
call intheeve ntofabr ea kdo wnorasimil arsit‐
ua tio n.
Di spl aysin themed iadisp lay
SOS READY: eCall available
SO SNOT READY: theignition isno ton oreCall
is no tav ailable.
Dur ing anact ive emer gency call,0053 appe ars
in thedispla y.
Yo ucan find mor einf orma tionon there gional
av ailabilit yof eCall at:ht tp s:// www .merced es-
ben z-mobi le.com /extra /eca ll/
% Ifth er eis amalfunct ionintheemer gency
cal lsy stem (e.g. amalfunct ionwithth e
speak er,micr ophone, airbag,SOS button), a
cor responding messageappea rsinthemul‐
tifun ction displa yof theins trument cluster. Tr
igg ering anaut omat icemer gency call
Re quirement s
R The ignit ionisswitc hedon.
R The star terbatt eryis suf ficie ntlych arge d.
If re stra int systems suchas airbags orEmer ‐
ge ncy Tensi oni ng Device sha ve been activated
af te ran accide nt,theMer cedes- Benzemer‐
ge ncy callsy stem mayaut omaticall yinitiat ean
emer gency call.
The eme rgency callhas been made:
R Avo ice con nection ismade totheMer cedes-
Benz emergency callcent er.
R Ames sage withacc iden tdat ais transm itted
to theMer cedes- Benzemergency callcent er.
The Mercedes-B enzeme rgency callcent er
can trans mit theve hicle position datato one
of theemer gency callcent ers.
The SOS button intheove rhead control panel
fl ashes untilth eemer gency callis finis hed .
It is no tpo ssi ble to immed iatelyend anaut o‐
matic emergency call. If
no conne ctioncan bemade totheemer gency
ser vice sei th er,a cor responding message
appea rsinthemedia display. #
Dialth elocal emergency num beron your
mob ilephon e.
If an eme rgency callhas been initiat ed:
R Remain intheve hicle ifth ero ad and traffic
condi tions permit youto do sountil avo ice
con nection ises tablished withth eemer‐
ge ncy callcent eroperator.
R Bas edon thecall, theoper ator decides
whe ther itis neces saryto cal lre scue teams
and/ orthepolice totheacciden tsit e.
R Ifno vehicle occupant answers, an ambu‐
lance issent totheve hicle immediat ely.
Tr igg ering ama nual emer gency call #
Press and hold theSOS buttonintheove r‐
head controlpanel forat lea stone second.
The emer gency callha sbe en ma de:
R Avo ice con nection ismade totheMer cedes-
Benz emergency callcent er. Mu
ltimed iasystem 289

R
Ames sage withacc iden tdat ais transm itted
to theMer cedes- Benzemergency callcent er.
The Mercedes-B enzeme rgency callcent er
can trans mit theve hicle position datato one
of theemer gency callcent ers.
R Remain intheve hicle ifth ero ad and traf fic
condi tions permit youto do sountil avo ice
con nection ises tablished withth eemer‐
ge ncy callcent eroperator .
R Bas edon thecall, theoper ator decides
whe ther itis neces saryto cal lre scue teams
and/ orthepolice totheacciden tsit e.
If no con nect ioncan bemade totheemer gency
ser vice sei th er,a cor responding message
appea rsinthemedia display. #
Dialth elocal emergency num beron your
mob ilephon e.
End inganunin tentional emergency call #
On themu ltifunct ionsteer ing wheel:
selec t0076. Depress thebutt onforse veral
seconds. Data
transf eroftheMer cedes- Benzemer‐
ge ncy callsystem
In theeve ntofan automatic ormanua lemer‐
ge ncy callth efo llo wing datais transmit ted, for
ex am ple:
R Vehicle's GPSposition data
R GPS position dataon thero ute(a few hun‐
dr ed meters bef oreth einciden t)
R Direct ion oftra vel
R Vehicle identif ication number
R Vehicle drive type
R Number ofpeop lede term ined tobe inthe
ve hicle
R Whe ther Mer cedes meconnect isavailable
or not
R Whe ther theemer gency callwa sinitiat ed
manually oraut omatically
R Time oftheacciden t
R Languag ese tting onthemultimedia system
Dat atransmit tedis vehicle information. Foran y
qu estion sabout thecollect ion,useand shar ing
of theeCall system data,please contact MBU‐ SA
'sCus tomer Assis tance Center at800-F OR-
MER C.
Fo rCa nada ,plea secont actMBC's Customer
Assis tance Center at1-800-38 7-0100.
Cu stomer requ ests forco veredinf ormation
should besubmitt edvia thesame chann els.
Fo raccide ntclar ificatio npur poses ,th efo llo wing
measur escan betake nup toan hour afte rth e
emer gency callha sbe en initia ted:
R The current vehicle position canbedeter‐
mined.
R Avo ice con nection totheve hicle occupants
can beestablished 290
Multimedia system

The
multimedia connection unitisfound inthe
st or ag ecom partmen tunder thear mr estand has
tw oUSB ports.
Depen dingontheve hicle's equipment, addi‐
tional USBportscan befound inthestor ag e
com partmen tof thecent ercon sole andinthe
re ar passe nger com partment . #
Con nectth eUSB device totheUSB port.
Pla yable music files arepla yedbac konl yif
th ecor responding mediadisplayis activ ated.
% Use theUSB portidentif iedbyç touse
Ap ple CarPla y®
and Android Auto.
% Dep endingontheve hicle equipment ther eis
an additional USBportin there ar passe nger
com partment .Po rts th at arelabeled witha
bat tery symbol canonly beused tocharge
USB devices.
Selec tingatrac kin themed iapla yba ck
Multimedia system:
4 Media
Selecting atrac kby skipping toatrac k #
Toskip backwards orforw ards toa
tr ac k: navig ateup ordown. Sel
ecting atrac kusin gth ecur rent trac klis t #
Select 00D3. #
Select Current TrackList. #
Select atra ck.
Selec tingplaybac kop tions
Multimedia system:
4 Media 5
Z Option s
Pla ying backsimilar trac ks #
Select Play Simi larTra cks.
A trac klist wit hsimilar trac ks iscreat edand
pla yedbac k.
Pla ybac kmode #
Select Random Mode-Current Playlist.
The current trac klist ispla yedin rando m
or de r. #
Select Random Mode-Cu rrent Medium.
All trac ks on theactiv edat ast or ag emedium
ar epla yedin rando morde r. #
Select Norm alTra ckSequ ence.
The current trac klist ispla yedin theor der it
appear son thedat ast or ag emedium. Contr
olling media playbac k
Multimedia system:
4 Media 5
Y Playback Control
A bar withpla ybac kcon trols issho wn. #
Topause playbac k:sel ect and conf irm
Y with thecent ralcon trol elemen t.
The 00CF symbol isdispla yed. #
Toresume playbac k:select andconf irm
Y again withth ecent ralcon trol elemen t.
The 00D0 symbol isdispla yed.
To fast forw ard/r ewind #
Move00CF onthetimeline.
To hide theplaybac kco ntr ols #
Press the0038 button. Vi
deo mode Sw
itchin gto video mode
Multimedia system:
4 Media 5
à Media Sources #
Select adat ast or ag emedium. 298
Multimedia system

#
Select Move Highlighte dStati on. #
Select amemo ryprese t.
Dele ting station s: #
Highl ightapr ese tentr yand navig ateto the
lef t. #
Selec tDelet eHighlig htedSt ation. #
Selec tYes. Ac
tiv atin g/deac tivatin gra dio text Multimedia
system:
4 Radio 5
Z Option s
5 Display RadioTextInformation #
Activate0073 ordeacti vate 0053 thefunc tion. Sat
ellit era dio In
fo rm ation onthesat ellit era dio
SIRI USXM®
sat ellite radio offers mor eth an 175
digit al-quality radio chann elsprov iding 100%
commer cial-free musi c,spor ts,news and enter‐
ta inm ent,fo rex am ple. SIRIUS XMsatellit era dio
em ploysaflee tof high-per form anc esat ellit esto br
oadcas tar ound thecloc kth ro ughout theUS A
and Canada. Thesatellit era dio progr am isavail‐
able fora mont hlyfe e. Inf ormation aboutthis
can beobt ained from aSir ius XM®
Ser vice Cen‐
te rand athttps://www .siriusxm.com (USA)or
https://www .siriusxm.ca (Canada ).
% Sirius ,XM and allrelat ed mar ksand logos
ar etrademar ksofSir ius XM Radio Inc.and
its subsidiar ies.Allother mar ks,ch ann el
nam esand logos areth epr oper tyof their
re spectiv eow ner s.All rights reser ved.
Sat ellit era dio restriction s
Sat ellit era dio mode maybe temp orarily una vail‐
able orinterru pte dfo ra va riet yof reason s.
Thes einc lude environ men talor topog raphical
con dition sbe yond thecon trol of Mer cedes- Benz
US A,LLC. Thus, operation atcer tain locat ions
ma yno tbe possible .
Re gis tering sat ellit era dio
Re quirement s:
R Satellit era dio equipment
R Regis tration withasat ellit era dio prov ider R
Ifre gis tration isno tincluded whenpurchas‐
ing thesy stem, your credit cardde tails will
be requ ired toact ivat eyo ur acc oun t.
Mult imed iasystem:
4 Radio 5
Þ Radio Source
5 SiriusXM Radio5
Z Option s #
Select ServiceInformation.
The service information screen appear s
sho wing thera dio IDand thecur rent sub‐
scr iptio nstatus . #
Establish ate lephon econ nection . #
Followtheser vice staf f's instruct ions.
The activatio npr oce ssma yta ke up toten
minut es.
% Youcan also have thesat ellit eser vice acti‐
va tedonline. Todo so, please visithttps:/ /
www .siriusxm. com(USA)orhtt ps:/ /
www .siriusxm. ca(Canada).
Switc hingonsat ellit era dio
Mu ltimed iasystem:
4 Radio 5
Þ Radio Source #
Select SiriusXM Radio. Multimedia
system 309

ASS
YSTPL US service interva ldisp lay Fu
nction oftheASS YSTPL US service interva l
displ ay The
ASSYSTPL US service interva ldispla yon the
Ins trument Displaypr ov ides informatio non the
re maini ngtime ordis tance before thene xt
ser vice duedate.
Yo ucan hide this ser vice displa yusing thebac k
butt ononthelef t-hand sideofthesteer ing
wheel.
Depen dingonhowtheve hicle isused, the
ASS YSTPL US service interva ldispla yma y
shor tenth eser vice interva l,e.g. inthefo llo wing
cases :
R Mainl yshor t-dis tance drivi ng
R Whe nth eengine isoftenleft idling forlong
per iods
R Intheeve ntoffreq uent col dstar tphase s
Mer cedes-Ben zre comme ndsavoiding such
oper ating condit ions.
Yo ucan obtain informat ionconcernin gth eser v‐
icing ofyour vehicle from aqu alif ied spec ialist wo
rkshop, e.g.anaut hor ized Mercedes-Benz
Cent er. Displa
yingtheser vice dueda te On-boar
dcom puter:
4 Service 5
ASS YST PLUS
The next ser vice duedateis displa yed. #
Toexitth edisp lay: press thebac kbutt on
on thelef t-hand sideofthesteer ing wheel.
Bear inmind thefo llo wing relat ed topic:
R Oper ating theon- board computer
(/ page202). Inf
ormat iononregular maintenance work *
NO
TEPrema turewe arthro ugh failur eto
obser veser vice duedates Maint
enance workwhic his no tcar ried out at
th eright time orincom pletely ca nlead to
inc reased wearand damag eto theve hicle. #
Adher eto thepr escr ibed service inter‐
va ls. #
Alw aysha ve thepr escr ibed maint e‐
nanc ewo rkcar ried out ataqu alif ied
spec ialistwo rkshop. Special
service requ irement s The
prescr ibed service interva lis based onnor ‐
mal opera tionoftheve hicle. Maintenance work
will needto be per form ed mor eof tenif th eve hi‐
cle isoper ated under arduous conditions or
incr eased loads.
The ASSYSTPL US service interva ldispla yis onl y
an aid. Thedriver oftheve hicle bearsre sponsi‐
bility asrega rdsto whe ther maint enanc ewo rk
nee dstobe per form ed mor eof tenth an spec i‐
fi ed based ontheactual operating conditions
and/or loads.
Ex am ples ofarduous operating conditions :
R regular citydriving withfreq uent intermedi‐
at estops
R mainly short-distance drivi ng 31
6
Maint enance andcare

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 ldispla ycan
calc ulateth eser vice duedateonl ywhen the
batt eryis con nected. #
Notedown theser vice duedatedispla yedon
th eins trument displaybef orediscon necting
th ebatt ery(/ page31 6). Eng
inecom partment Ope
ningand clos ing the hood &
WARNIN GRisk ofacci dent dueto driv‐
ing withth ehood unlocked
The hood mayopen andblockyo ur vie w. #
Neverre lease thehood when driving. #
Beforeev erytrip, ensur eth at thehood
is loc ked. &
WARNIN GRisk ofacci dent andinjury
when openingand closingthehood
The hood maysuddenl ydr op intoth eend
position .
Ther eis arisk ofinjur yfo ran yone inthe
hood's rang eof mo vement. #
Donotopen orclose thehood ifth er e
is aper son inthehood's rang eof mo ve‐
ment. &
WARNIN GRisk ofburnswhen opening
th ehood
If yo uopen thehood when theengine has
ove rheat edorwhen ther eis afire inthe
engine compartmen t,th efo llo wing situat ions
ma yocc ur:
R Youco uld come intoco ntact withho t
ga ses.
R Youco uld come intoco ntact withot her
ho t,escaping operating fluids. #
Beforeopen ingthehood, allowthe
ove rheat edengine 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
Com ponents intheengine compartmen tma y
con tinue running orstar tup sudden ly,ev en if
th eignition isswitc hedoff. Maint
enanc eand care 317

R
Ther eis amalfunct ioncaused byano ther
ra dio signal source
Chec kingthetir epr essur ewit hth etir epr es‐
sur emoni toring system
Re quirement s:
R The ignit ionisswitc hedon.
On- boar dcom puter:
4 Service 5
Tires
One ofthefo llo wing displa ysappear s:
R Cur rent tirepr ess ureand tirete mp eratur eof
th eindividual wheels: R
Tire pressure willbedisplayed afterdriving a
few minutes
R Tire Pressure MonitorAct ive: thete ac h-in
pr oce ssofthesy stem isno tye tcomple te.
The tirepr essur esarealr eady being moni‐
to re d. #
Com pareth etir epr essur ewit hth ere com‐
mend edtirepr ess urefo rth ecur rent operat‐
ing cond ition (/ page 357). Obse rveth e
no teson tirete mp eratur e(/ page355).
% The values displa yedin theon- boar dcom‐
put erma yde viat efrom those ofthetir e
pr essur ega ug eas they referto sea leve l.At
high elevatio ns, thetir epr essur eva lue indi‐
cat edbyapr essur ega ug ear ehigh erthan
th ose shownbytheon- boar dcom puter.In
th is case, donotre duce thetir epr essur e.
Re star ting thetir epr essur emoni toring sys‐
te m
Re quirement s:
R The recomme ndedtirepr ess ureis cor rectl y
se tfo rth ere spectiv eoper ating status onall
of thewheels (/page355). Re
star tth etir epr essur emonit oring system in
th efo llo wing situat ions:
R The tirepr essur ehas chang ed.
R The wheels ortires have been chang edor
ne wlyins talled.
On- boar dcom puter:
4 Service 5
Tires #
Swipe down wardson Touc hCon trol on the
lef t-hand sideofthesteer ing wheel.
The Use Current Pressures asNew Refer-
ence Values? messageis sho wninthemulti‐
func tion displa y. #
Torestar t,pr ess Touc hCon trol on thelef t-
hand sideofthesteer ing wheel.
The Tire Press. MonitorRestart edmessag eis
sho wninthemultifunc tiondispla y.
Cur rent wa rning mess ages aredele tedand
th eye llo w0077 warning lam pgoes out.
Af teryo uha ve been driving fora fe w
minut es,thesy stem checks whe ther thecur‐
re nt tirepr ess ures arewi thin thespecif ied
ra ng e. The current tirepr ess ures areth en
accep tedas refere nce values andmon itor ed. 360
Wheels andtires

Disp
laymes sages Int
roducti on In
fo rm ation about displaymessag es
Displ aymessa gesappea ron themultifunc tion
displa y.
Dis play messa geswit hgr aphical symbols are
sim plified intheOper ator's Manual andmaydif‐
fe rfr om thesymbols onthemultifunc tiondis‐
pla y.The multifunct iondispla ysho wshigh-pr ior‐
ity displa ymessag esinred. Cer tain displa ymes‐
sag esareacc ompanied byawa rning tone.
Pl ea se act inacco rdanc ewit hth edispla ymes‐
sag esand follo wtheadditional notesin the
Oper ator's Manual .
Fo rsome display messa ges,asymbol willalso
be sho wn:
R Õ Further information
R 00A4 Hidedispla ymessag e
Wi th thelef t-hand Touc hCon trol, youcan select
th ere spectiv esymbol byswiping tothelef tor
ri ght. Press theÕ symbol tosho wfur ther infor‐ mation
onthemedia display.Press the00A4
symbol tohide thedispla ymessag e.
Yo ucan hide low- prior ity displa ymessag esby
pr essing theP backbutt onorthelef t-hand
To uc hCon trol. The displ aymessa geswill then
be stor ed inthemessag ememor y.
Re ctify thecause ofadispla ymessag eas
qu ickl yas possible .
High- prior ity displa ymess ages can notbe hid‐
den. Themultif unction displa ysho wsthese dis‐
pla ymessag escon tinuousl yuntil thecause of
th edispla ymessag ehas been rectif ied.
Cal ling up save ddispl aymes sages
On-b oard com puter:
4 Service5
1Mes sage
If th er ear eno displa ymessag es,NoMessages
will appear onthemultifunc tiondispla y. #
Scrollth ro ugh thedispla ymessag esby swip‐
ing upw ards ordown wardson thelef t-hand
To uc hCon trol. #
Toexitth emess agemem ory: press the
bac kbutt onP. 398
Displa ymessag esand warning/ indic ator lam ps

Smar
tKey Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Á Obtain aNew Key *H
aveSmar tKey replaced. #
Consult aqu alif ied spec ialistwo rkshop.
Á Repla ceKey Battery *T
heSmar tKey batt eryis disc harged. #
Replace thebatt ery(/ page65).
Á Key NotDetected(whit e
displa ymessag e) *T
heSmar tKey iscur rentl yund etect ed. #
Chang eth elocation oftheSmar tKey intheve hicle. #
Ifth eSmar tKey isstill no tre cogni zed,place itin themar kedspace forst ar tin gwit hth eSmar tKey
( / pag e12 6). 402
Displaymessa gesand warning/ indic ator lam ps