tow MERCEDES-BENZ C-CLASS CABRIOLET 2021 Service Manual

Ac
tiv eLan eCha ngeAs sist Fu
nction ofActiv eLan eCha ngeAs sist
Ac tiveLa ne Chang eAssi stsuppor tsthedr iver
when chang inglane sby appl ying steer ing torq ue
if th edr iver oper ates atur nsignal indicat or.
Obser vetheno teson driving systems andyour
re sponsibili ty;yo uma yot her wise failto recog‐
nize dangers(/ page 150).
Assi stanc ewhen chang inglane sis prov ided ifall
th efo llo wing condition sar eme t:
R Youar edr ivin gon afree wa yor road with
mult iplelane sin thedir ect ion oftrav el.
R The neighbor inglane issepar ated byabr o‐
ke nlane ma rking.
R Novehicle isde tected intheadjacen tlane.
R The vehicle speed isbe tween 50mph
(80 km/ h)and 110mp h(1 80 km/h) .
R ActiveLa ne Chang eAssi stisswitc hedonin
th emultimedia system.
R ActiveSt eer ing Assis tis activ ated and activ e.
If no vehicle isde tected intheadjacen tlane and
a lane chang eis per mitted, thelane chang e begin
saf te rth edr iver has activ ated thetur nsig‐
nal indicat or.This issho wntothedr iver wit ha
gr een arro w ne xt to the± steer ing wheel
symbol. Themessag e,forex am ple, also
appear s.IfAc tiveLa ne Chang eAssi sthas been
activ ated withth etur nsignal indicat orbut alane
ch ang eis no timm ediat elyposs ible, agr ay arrow
appear sne xt to the± steer ing wheel symbol,
whic hre mains green.
When thelane chang eassis tance star ts,th etur n
signal indicat orisaut omaticall yactiv ated along
wit hth edispla yin themultifunc tiondispla y.
If th eassis tance grap hicis sho wnwhen chang ‐
ing lane s,an addit ionalarrow appear sin itpoin t‐
ing towa rdsth eadjacen tlane (/page15 9).
If alan ech ang eis no tposs ible, thear row is
fa ded outafte ra fe w sec ond sand ane wlane
ch ang emus tbe init iated. Animm ediat elane
ch ang eis on lypo ssible on free wa ysec tion s
wit hout speedlimi ts.
If th esy stem isim pair ed,ActiveLa ne Chang e
Assi stma ybe canceled .If it is canceled ,th e
messa geappear sin themultifunc tiondispla y. In
addi tion, awa rning tone maysou nd, depend‐
ing onthesituation . &
WARNIN GRisk ofacci dent whench ang ‐
ing lane toan occ upied adjacentlane
Lan eChan geAssi stcanno tal wa ys cle arly
de tect ifth eadjacen tlane isfree.
The lane chang emigh tbe init iated although
th eadjacen tlane isno tfr ee. #
Beforech ang inglane s,mak esur eth at
th eneighbor inglane isfree and ther eis
no dang ertoother road user s. #
Mon itor thelane chang e. &
WARNIN GRisk ofacci dent ifLane
Ch ang eAssi stune xpectedl yst ops func‐
tionin g
If th esy stem limit ations forLane Change
Assis tha ve been reac hed, ther eis no guar‐
ant eethat thesy stem will remain active.
Lane ChangeAssis tcanno tth en assis tyo u
by appl ying steer ing torq ue. Dr
iving and parking 16
9

%
The turnsignal indicat orisswitc hedonaut o‐
matically whenthepar king procedur e
begins.
Yo uar ere sponsible forsele cting thetur nsignal
indicat orinaccor dance withth etraf fic condi ‐
tions .If neces sary,select thetur nsignal indica‐
to raccor dingly. &
WARNIN GRisk ofacci dent dueto vehi‐
cle swinging outwhile parking orpulli ng
out ofapar king space
While parking orexitin gapar kingspace, the
ve hicle swings outand candrive ont oar eas
of theonc oming lane.
This could cause youto coll ide wi th object s
or other road user s. #
Payatt ention toobject sand other road
user s. #
Wher enec essar y,stop theve hicle or
cancel thepar king procedur ewit h
Ac tivePa rking Assist. #
If,forex am ple, thePlease Engage Reverse
Gear messag eappear sin themedia display: select
thecor responding transmission posi‐
tion.
The vehicle drives intoth eselect edpar king
space.
% During thepar king procedur ewit hAc tive
Pa rking Assist, th elane markings aredis‐
pla yedin green inthecamer aimag e.
On com pletion ofthepar king procedur e,the
Ø Parking AssistFinished, TakeContr olof
Vehicle displaymessag eappear s.Fu rther
maneuv ering mayst ill be nec essar y. #
Aftercom pletion ofthepar king procedur e,
saf eguar dth eve hicle agains tro lling away.
When requ ired bylegalrequ iremen tsor local
con dition s:tur nth ewheels towa rdsth ecurb.
% Youcan stop theve hicle andchang eth e
tr ans missi on positio ndu ring thepar king pro‐
cedur e.The system then calculat esane w
ve hicle path.Ifno newvehicle pathis availa‐
ble, thesy stem can chang eth etransmission
position again orcanc elthepar king proce‐
dur e. Exiting
apar king space withAc tiv ePa rking
Assis t
Re quirement s:
R The vehicle hasbeen parkedwit hAc tive
Pa rking Assist.
Please note that youar ere sponsible forth eve hi‐
cle and surround ingsdur ing theent ire par king
pr ocedur e. #
Startth eve hicle. 19
6
Driving and parking

If
th era dar sensor sar eobs truct edbyvehicles
or other object s,de tection isno tpos sible.
Cr oss Traf fic Aler tis acti veund erthefo llo wing
con dition s:
R Ifth eve hicle isbac king upatwa lkin gpace.
R Maneuv ering assis tance isacti vated
( / pag e19 9).
% Alsoob ser vetheins truction son Blind Spot
Assis tand ActiveBli nd Spo tAssi st
( / pag e17 7).
Sy stem limit s
Cr oss Traf fic Aler tis no tav ailable onincline s.
Ac tiv atin gor deac tivatin gmane uvering
ass ista nc e
Mu ltimed iasystem:
4 Vehicle 5
k Assist ance
5 Camera &Parkin g5
Maneuverin gAssist . #
Activate0073 ordeacti vate 0053 thefunc tion.
% Maneuv ering assis tance mustbe activ efo r
th efunc tion ofDrive Aw ayAssi st
( / pag e19 8) andCr os sTr af fic Aler t
(/ page 198). Ve
hicl eto wing instruct ions
The vehicle isno tsuit able forth euse oftow bar
sy stems that areused forflat towing ording hy
to wing, forex am ple. Attach ing and using tow bar
sy stems canlead todamag eon theve hicle.
When youar eto wing ave hicle withto w bar sys‐
te ms, safedr iving charact eristic scan notbe
guar anteed forth eto wing vehicle ortheto we d
ve hicle. Thevehicle-tr ailercombination may
sw erve from side toside. Complywithth eper‐
mitt edtowing methods (/page346) andthe
ins truct ions forto wing withbo th axle son the
gr ou nd (/ page 347). Dr
iving andparking 19
9

Inf
orma tion onNearField Comm unication
(NFC)
NFC enabl esshor t-ra ng ewi reless datatransf er
or (re)con nection ofamobile phonewit hth e
multime diasystem.
The follo wing functionsar eav ailable without
ha vin gaut hor izedamobi lephon e:
R Trans ferring aURL tobe viewe din themulti‐
media system (see themanuf acturer'soper‐
ating instruction s).
R Setting uptheve hicle's Wi-Fi acce ssdata via
th esy stem settings (/page233).
Fu rther information canbefound at:ht tp s://
www .merced es-ben z-mob ile.com/
Using amob ilephone withNe arField Com‐
mu nicat ion(NFC)
Re quirement s:
R NFC isact ivat ed on themobile phone(see
th emanuf acturer'soper ating instruction s)
R The mobile phone's screen isswitc hedon
and unloc ked(see themanuf acturer'soper‐
ating instruction s) #
Toconnect amob ilephone: open stow age
com partment cover1. #
PlacetheNFC interface ofthemobile phone
(see manuf acturer'soper ating instruction s)
on logo 2ontheinside oftheco ver.
The mobile phoneisconn ectedtothemulti‐
media system. #
Tochang emobi lephone s:pla cetheNFC
ar ea ofthemobile phone(seemanuf actur‐
er's oper ating instruction s)on NFC logo2.
If th emobile phonehasalready been author‐
ized onthemultimedia system, itis no wcon ‐
nect ed.
If th emobile phoneisaut hor ized onthemul‐
timedia system forth efirs ttim e,itis conne c‐
te daf te rconf irming themobile phone
ins truction s(see themanuf acturer'soper at‐
ing instruction s).
Fu rther information canbefound at:
ht tp s:// www .merced es-ben z-mob ile.com/
Se tting there cep tion andtrans mis sion vol‐
um e
Re quirement s:
R The mobile phoneis aut hor ized
(/ page269) .
Multime diasystem:
4 Phone 5
Z Option s5
Phone
This function ensur esoptimal languag equ alit y. 27
2
Multimedia system

#
Select Decl ine&End .
Ex iting Appl eCarP lay® #
Press the00E2 buttononthemultifunc tion
st eer ing wheel, forex am ple.
% IfApp leCarPla y®
wa sno tdispla yedin the
fo re grou nd before discon necting,theappli‐
cation star ts inthebac kground when recon‐
nect ed.Youcan callupApple CarPla y®
in
th emain menu.
Calling upApple CarPla y®
sound settings
Multimedia system:
4 Connec t5
Apple CarPlay 5
Sound #
Select thesound menu(/page31 3).
Endi ngApple CarPla y®
Mul timedi asy stem:
4 Connec t5
Apple CarPlay #
Select Disconnect.
The connect ionisended.
The mobile phonecontinues tobe supplied
wit helect ricity .
or #
Disco nnect thecon nect ingcable between
th emobile phoneandmultimedia system.
Mer cedes- Benzrecomme ndsdisconnecti ng
th econ nect ingcable onlywhen theve hicle is
st atio nary. Andr
oidAuto Andr
oidAutoove rview &
WARNIN GRisk ofdist ra ction from infor‐
mati onsystems andcomm unication s
eq uipment
If yo uoper ateinf ormat ionand comm unic a‐
tio neq uipme ntintegratedin theve hicle
when driving, youwill bedistract ed from the
tr af fic situ ation. Thiscou ldalso cau seyouto
lose control of theve hicle. #
Onlyoper ateth is eq uipmen twhen the
tr af fic situ ation per mits. #
Ifyo ucan notbe sur eof this, stop the
ve hicle whilstpa ying attention toroad
and traffic condi tions andoperate the
eq uipment withth eve hicle statio nary. Yo
umus tobse rveth eleg alrequ iremen tsforth e
cou ntryin whi chyouar ecur rentl ydr ivi ng when
op erati ng themultimedia system.
Mobile phonefunctionscan beused with
An droid Autousin gth eAn droid oper ating sys‐
te m on themultimedia system. Itis oper ated
using thecent ralcon trol elemen tor voice con ‐
tr ol system. Youcan activat eth evo ice con trol
sy stem bypressing andholding the00E3 button
on themultifunc tionsteer ing wheel.
When usingAndroid Autowit hvo ice con trol, the
multime diasystem can still be oper ated using
th eVo ice Cont rolSy stem (/ page206).
Onl yone mobile phoneatatime canbecon nec‐
te dvia Android Auto wit hth emultimedia sys‐
te m.
The availabilit yof An droid Autoand Android Auto
apps mayva ry acc ordin gto thecount ry.
The service prov ider isresponsible forth is appli‐
cat ion and theser vices andcontent conne cted
to it. Multim
ediasystem 28
1

Inf
orma tion onAndr oidAuto
While usingAndroid Auto,va rious funct ionsof
th emultimedia system, forex am ple themedia
sour ceBlue tooth®
audio, areno tav ailable.
On lyone routeguidan cecan beact ive at atim e.
If ro uteguidan ceisact ive on themultimedia sys‐
te m, itis closed whenrouteguidan ceisstar ted
on themobile phone.
Connecting amobile phoneviaAndr oidAuto
Re quirement s:
R The firs tacti vatio nof Andr oid Au to on the
multime diasystem mus tbe car ried out when
th eve hicle isstatio naryfo rsaf etyre ason s.
R The mobi lephon esuppo rts Andr oidAuto
fr om Andr oid5.0.
R The Andr oidAutoapp isins talled onthe
mobil ephone.
R Inorder touse thete lephon efunc tions,the
mobil ephone mustbe connect edtothemul‐
timedia system viaBlue tooth®
( / pag e269 ). If
th er ewa sno prior Interne tconn ection, this
is es tablished withth euse ofthemobile
phone withAn droid Auto.
R The mobile phoneisconn ectedtothemulti‐
media system viatheUSB portç using a
suit able cable (/page29 7).
R AnInterne tcon nect ionisrequ ired forth efull
ra ng eof func tions forAndr oidAuto.
Multimedia system:
4 Connec t5
Android Auto #
Select themobile phonefrom thede vice list.
Ac cep ting/r eject ingtheda ta protection reg‐
ulat ions
A messag ewit hth edat apr otect ion regulations
appear s. #
Select Accept &Start .
or #
Select Decline &End.
Ac tiv atin gaut omati cst ar t #
Select StartAutoma tically0073. St
arting manuall y #
Select themobile phonefrom thede vice list.
Exiting AndroidAuto #
Press the00E2 buttonon themultifunc tion
st eer ing wheel, forex am ple.
% IfAn droid Autowa sno tdispla yedin thefo re ‐
gr ound beforedisconn ecting,theapplication
st ar ts inthebac kground when reconnect ed.
Yo ucan callupAndroid Autointhemain
menu.
Calling uptheAndr oidAutosound settings
Multimedia system:
4 Connec t5
Android Auto 5
Sound #
Select theto ne menu (/page 313).
End ingAnd roid Au to
Multimedia system:
4 Connec t5
Android Auto #
Select Disconnect.
The connect ionisended.
The mobile phonecontinues tobe supplied
wit helect ricity . 282
Multimed iasystem

Mor
einf ormation aboutMercedes meconn ect
ser vices canbeobt ained intheMer cedes me
Po rtal: http s:// me. secure.m erced es-ben z.com
Data trans ferre ddur ing Mer cedes mecon‐
ne ct cal lse rvices
The datatransf erreddur ing aMer cedes mecon‐
nec tcall depends on:
R The reason forinitia tionofthecall
R The service that isselec tedin thevo ice con ‐
tr ol system
R The activ ated Mer cedes meconnect services
Whic hdat ais transf erredfo rth eser vices canbe
ta ke nfrom thecur rentl yva lid term sof use.
These canbeobt ained intheMer cedes mepor‐
ta l:htt ps:/ /me .secure.m ercedes -benz.com Mer
cedes-B enzemer gency callsystem Inf
orma tion ontheMer cedes- Benzemer‐
ge ncy callsystem
Yo ur vehicle iseq uipped withth eMer cedes- Benz
emer gency callsy stem ("eCall ").This featur ecan
help save lives intheeve ntofan acci dent. eCall in
no wayre places assistance prov ided from
dialing 911.
The Mercedes-B enzemer gency callsy stem is
av ailable forat lea sttenye arsst ar tin gfrom the
manuf acturingdate.
Mer cedes-Benz eCallonly functions inareas
wher emobil ephone coverage isavailable from
th ewir eless service prov ider s.Ins ufficie ntnet‐
wo rkcoverage from thewir eless service prov id‐
er sma yre sult inan emer gency callno tbe ing
tr ans mitt ed.
eC allis ast andar dfeatur ein your Mer cedes-
Ben zve hicle. Inorder tofunction asintended ,
th esy stem relies onthetransmission ofdat a
de tailed intheTr ans mittedDat asect ionthat fol‐
lo ws (/ pag e290 ).
To disable eCall,acus tomer mustvisit an
au thor ized Mercedes-B enzService depar tment
to deactiv ateth eve hicle's communication mod‐
ule.
Deactiv ationofthis mod ulepreve nts the
act ivat ion ofanyand allMer cedes mecon‐
nect services. Afterthe deactivatio nof eC
all,aut omati ceme rgency calland manua l
emer gency callwill notbe availab le.
The igniti onmus tbe swi tched onbef orean auto‐
matic emergency callcan bemade.
% eCallis acti vatedat thefa ct or y.
% eCall canbedeactiv ated byan aut hor ized
Mer cedes-Ben zdealer .Please note that in
th eeve ntow ner shipof theve hicle istrans‐
fe rred toano ther ow ner inits deacti vated
st at e, eCall willremain deactivated unles s
th ene wow ner visits an author ized
Mer cedes-B enzdealer shiptoreact ivat eth e
sy stem.
Ov ervie wof theMer cedes- Benzemergency
call system
eCall canhelp toreduce thetime between an
acciden tand thear riva lof emer gency service s
at thesit eof theacciden t.Ithelps locatean
acciden tsit ein places that aredif ficul tto
acc ess. However,eve nif ave hicle iseq uipped
wit heCal l,th is does notmean thesy stem isON.
As suc h,eCall doesnotre place dialing 911in the
eve ntofan acci dent. 28
8
Mu ltimed iasystem

#
Todeac tivatefull -screen mod e:press the
to uc hpad.
Cha nging videosettings
Mult imed iasystem:
4 Media 5
Z Option s
5 Picture Format
The follo wing picturefo rm ats areav ailable:
R Automat ic
R 16:9
R 4:3
R Zoom #
Select apict urefo rm at.
Ad jus tingthe brightne ssmanu ally
If th eAutom aticpictur efo rm atisswit ched off,
yo ucan adjustth ebr ightn essyourself . #
Select Bright ness. #
Adjus tth ebr ightn ess. Media
search St
arting themed iasear ch
Multimedia system:
4 Media 5
ª Search
Depen dingonthecon nect edmedia sourcesand
fi les, thefo llo wing categor iesarelis ted:
R Current TrackList
R Keyword Search
R Playlists
R Artists
R Albums
R Track s
R Folders
R Music Genres
R Year
R Composers
R Videos
R Podcast s(Apple ®
de vices)
R Audiobook s(Apple ®
de vices) #
Select acat egor y. %
The categor iesareav ailable assoon asthe
ent ire media content hasbe en read inand
anal yzed . Med
iaInt erface Inf
orma tion abou tth eMed iaInt erface
Media Inte rface isauniv ersal interface forth e
connecti onofmob ile au dio equipm ent.Themul‐
time diasy stem has twoUSB ports.The USB
por tsarelocat edinthestow agecom partment
unde rth ear mr est.
Supp ortedde vic es
The Med iaInt erface allo ws youto connect the
fo llo wing datast or ag emedia:
R iPod ®
R iPhone ®
R MP3 player
R USB devices
Fo rde tails and alis tof suppor tedde vices, visit
our websit eat htt ps:/ /www .mercedes-
benz .com/c onnect.Fo llowtheins truction sin
th e"Media Interface" secti on. Mu
ltimed iasystem 30
1

*
NO
TEDama gefrom automatic braking If
one ofthefo llo wing functionsis switc hed
on, theve hicle brak es aut omatically incer‐
ta in situat ions:
R ActiveBr ak eAssi st
R ActiveDis tance AssistDIS TRONI C
R HOLD functio n
R ActivePa rking Assist
To avo iddamag eto theve hicle, deactiv ate
th ese systems inthefo llo wing orsimilar sit‐
uation s: #
Dur ing towing #
Inacar wash *
NO
TEDama gedue touns uitable car
wa sh #
Beforedr iving intoacar wash mak e
sur eth at thecar wash issuit able for
th eve hicle dimensions. #
Ensur eth er eis suf ficie ntgrou nd clear‐
ance between theunderbody andthe
guide rails ofthecar wash. #
Ensur eth at theclear ance widthof the
car wash, inpar ticular thewidt hof the
guide rails, issuf ficie nt. To
avo iddamag eto your vehicle when usinga
car wash, ensur eth efo llo wing beforehand:
R Toavo idpossible wateringr ess intheve hi‐
cle, itis prefer able touse carwashes which
allo wthehigh-pr essurepr e-clean ingtobe
deactiv ated (specif ication forth econ vertible
pr ogr am).
R Avoid anyho t-w axtreatment .
R Mak esur eth at thewind deflect oron the
winds hieldhasbeen retract ed.
R ActiveDis tance AssistDIS TRONI Cis de acti ‐
va ted.
R The HOLD function isswitc hedoff.
R The surround viewcam eraor there ar vie w
cam erais swit ched off. R
The side windo wsand softto par eclosed
com pletely.
R Theblowe rfo rth eve ntil ation/he ating is
sw itched off.
R The windsh ield wipe rsw itchis in po sitio n
005A.
R The Sma rtKe yis at amin imum distance of
10 ft(3 m) away from theve hicle. Other wise,
th etrunk lidcould openunintentionall y.
R Forcar washes withacon veyo rsy stem:
- Neutr al005C iseng aged.
- Ifyo uwo uld liketo lea vetheve hicle while
it is being washed, makesur eth eSmar t‐
Ke yis loc ated intheve hicle. Thepark
position 005Disother wise automatically
eng aged.
% If,afte rth ecar wash, youre mo vethewa x
fr om thewindshield andwiper rubber s,this
will preve ntsme aring and reduce wiper
noise. 32
4
Maint enanc eand care

No
teson using apo we rwa sher &
WARNIN GRisk ofan acci dent when
us ing powe rwa sher swit hro und -spr ay
nozzl es
The waterje tcan caus eex tern all yin visi ble
damag e.
Com ponentsdamag edinthis wa yma yune x‐
pec tedly fail. #
Donotuse apo we rwa sher withro und-
spra yno zzles. #
Have damag edtires orchassis parts
re placed immediat ely. To
avo iddamag eto your vehicle, observethefo l‐
lo wing when usingapo we rwa sher :
R The Smar tKey isat amin imum distance of
10 ft(3 m) away from theve hicle. Other wise
th etrunk lidcould openunintentionally .
R Maint ainadis tance ofat leas t11 .8 in
(30 cm) totheve hicle.
R Vehicl eswith decorativ efo il: par tsof your
ve hicle areco veredwit hadecor ativefo il. Maint
ainadis tance ofat leas t27 .6 in
(70 cm) between thefo il-c ove redpar tsof the
ve hicle andthenoz zleofthepo we rwa sher .
Mo vethepo we rwa sher nozzlearound whilst
cleaning. Thewaterte mp eratur eof the
po we rwa sher mustno tex ceed 140°F
(60°C ).
R Obse rveth einf ormation onthecor rect dis‐
tan ceintheeq uipment manufacturer'soper‐
ating instruction s.
R Donotdir ect thenoz zleofthepo we rwa sher
dir ectl yat sensitiv epar ts,e.g. tires, softto p,
wind deflect ornet,ga ps, elect rical com po‐
nents, batter ies, light sources and ventil ation
sl its. Wa
shing theve hicl eby hand *
NO
TEEngi nedama gedue towa ter
ing ress #
Take car eno tto point thewa terje t
dir ectly towa rdsth eair inle tgr ille belo w
th ehood. Obser
vetheleg alrequ iremen ts,e.g. inanumb er
of coun tries, washing byhand isonl yper mitt ed
in specially designatedwash bays. #
Use amild cleaning agent, e.g.carsham poo. #
Washtheve hicle withluk ewa rmwaterusi ng
a sof tcar spong e.When doingso,donot
ex pose theve hicle todir ect sunlight . #
Carefully hosetheve hicle offwit hwa terand
dr yusi ng ach amois .
% Obse rveth eno teson thecar eof vehicle
par ts(/ page329). No
teson paint work/ma tte finish paint work
car e Obse
rveth eno teson cleaning andcareto avo id
damagin gth epaintw ork.
Pa int
R Insect remains: soakwithinsect remo verand
ri nse offth etreat edareas afte rw ards.
R Birddr oppin gs:soak withwa terand rinse off
af te rw ards. Main
tenance andcare32
5