2021 MERCEDES-BENZ C-CLASS CABRIOLET Owner's Manual

The
Oper ator's Manual andMaint enanc eBookle t
ar eim por tant docum ents andshould be kept in
th eve hicle. Ser
vice andvehicl eoper ation Ve
hicl eoper ation outside theUS Aor Cana da When
youar eabr oad withyo ur vehicle, observe
th efo llo wing points:
R Service point sor replacemen tpar tsma yno t
be available immediat ely.
R Unleaded fuelmayno tbe available forve hi‐
cles withacat alytic converter .Leaded fuel
ma ycause damag eto thecat alytic converter .
R The fuel mayha ve an extreme lylow oct ane
numb er.Un suit able fuelcancause engine
damag e.
Some Mercedes-Benz modelsareav ailable in
Eur ope thro ugh ourEuropean DeliveryPr og ram.
Fo rmor einf ormation, pleaseconsult anauthor‐
ized Mercedes‑B enzservice center,or write to
one ofthefo llo wing address:
In theUS A: Mer
cede s-Benz USA,LLC
Eur opea nDeliv eryDepar tment
One Mercedes-Benz Drive
Sandy Springs, GA30328
In Canada:
Mer cedes-Benz Canada,Inc.
Eur opea nDeliv eryDepar tment
98 Vande rhoof Avenue
To ronto, Ont ario M4G 4C9 Mai
nten anc e Yo
ur cus tomer advisorconf irms theser vice in
th eser vice repor t. Ro
adside Assistan ce The
Mercedes -Benz Roadside Assis tance Pro‐
gr am offers tech nica lhel pin thecase ofa
br eakdo wn.Your calls totheto ll-f reeRo adside
As sis tance Hotline areans weredby our agents
24 hour sa da y,365 days aye ar.
1- 80 0-FO R-MER Cedes (1-800-367-63 72)(US A) 1-8
00-387-0 100(Canada)
Yo ucan find further information inthe
Mer cedes-Ben zRo adside Assis tance Progr am
br oc hu re (US A)orthe"R oadside Assistance"
secti onintheSer vice andWarrant ybook let
(Canad a).Youwill find both intheve hicle docu‐
ment wallet. Chang
eof address orchang eof ow ner ship In
theev ent ofach ang eof addr ess, please send
us the"No tification ofaddr esschang e"inthe
Ser vice andGuarant eeboo kletor simply callth e
Mer cedes-Ben zCus tomer Assis tance Center
(US A)on theho tline number
1-8 00-FOR-MER Cedes (1-800-367-63 72)or Cus‐
to mer Service (Canada )on 1-800-38 7-0100. We
can then reac hyo uin atim elyfa shion, ifneces‐
sar y.
If yo usell your Mer cedes,pleas elea veall liter a‐
tur ein theve hicle sothat itis available tothe
ne xt ow ner .If yo uha ve pur chased aused vehi‐
cle, please sendusthe"No tice ofPur chase of
Used Car"intheSer vice andGuar anteebookle t
or sim plycall theMer cedes- BenzCustomer Gener
alno tes 23

Assi
stanc eCent er(US A)attheho tline number
1-8 00- FOR-MER Cedes (1-800-367-63 72)or Cus‐
to mer Service (Canada )at 1-800-38 7-0100. Po
ssible dangerdue tosubs tances hazard‐
ous tohealth In
com pliance withPr oposi tion65("Prop65"),
th efo llo wing detach able label hasbeen added to
eac hve hicle soldinCali forn ia: Oper
ating safety &
WARNIN GRisk ofacci dent dueto mal‐
functions orsystem failur es
To avo idmalfun ctions orsystem failur es: #
Alw aysha ve thepr escr ibed service and
maint enanc ewo rkas wellan yre qu ired
re pair scar ried out ataqu alif ied spe‐
cialis two rkshop. &
WARNIN GRisk ofacci dent orinju rydue
to inc orrect mod ifica tions onelectr onic
com pone ntparts
Modif ication ofelectr oniccomponent s,their
sof twareor wir ing could impair their func tion
and/or thefunc tion ofother networke dcom‐
ponen tpar tsor saf ety-re leva nt systems.
This canendang ertheoper ating safetyof the
ve hicle. #
Neverta mp erwit hth ewir ing and elec‐
tr onic componen tpar tsor their soft‐
wa re. #
Yousho uld have all workon electr ical
and electr oniccomponent scar ried out
at aqu alif ied spec ialistwo rkshop. Obser
vethe"On-boar delectr onics"sect ionin
"T ec hnical data". &
WARNIN GRisk offire due toflammab le
mat erials onhotpar tsof theex haus t
sy stem
Flammable material suc has lea ves, grass or
twigs mayignit eif th ey come intocont act
wi th hotpar tsof theex haus tsy stem. #
When driving onunpavedro ads oroff-
ro ad, regular lych eckth eve hicle under‐
side. #
Remo vetrap pe dplants orother flam‐
mable material, inpar ticular . #
Ifth er eis damag e,con sult aqu alif ied
spec ialistwo rkshop immediat ely. 24
Generalno tes

*
NO
TEDama getotheve hicle duetodriv‐
ing toofast and due toimpact sto the
ve hicle underbody orsuspension compo‐
nent s In
thefo llo wing situat ions,in par ticular ,th er e
is arisk ofdamag eto theve hicle:
R The vehicle becomes grounded, e.g.ona
high curb oran unpavedro ad
R The vehicle isdriven toofa st over an
obs tacle ,e.g. acurb ,spe edbump orpot‐
hole
R Ahea vyobject strike sth eunderbody or
suspension componen ts
In situation ssuc has these, damag eto the
body ,underbody ,suspension componen ts,
wheels ortires ma yno tbe visible. Compo‐
nen tsdamag edinthis wa ycan unexpec tedly
fa ilor ,in thecase ofan acciden t,ma yno lon‐
ge rabso rbthere sulting forc eas intended.
If th eunderbody panelingisdamag ed,flam‐
mable materials suchas lea ves, grass or
twigs cancollect between theunderbody and th
eunderbody paneling.Thesematerials may
ignit eif th ey come intocont actwith hot
par tsof theex haus tsy stem. #
Have theve hicle checkedand repair ed
immediat elyat aqu alif ied spec ialist
wo rkshop.
or #
Ifdr iving safetyis im pair edwhile con‐
ti nui ng your jour ne y,pull over and stop
th eve hicle immediat ely, while paying
att ent ion toroad and traffic condi tions,
and cont actaqu alif ied spec ialistwo rk‐
shop. Dec
laration ofconf ormity forwi reless vehi‐
cle comp onent s
US A:"Radio based devic es ofthis vehicle com‐
ply withPa rt15 oftheFCC Rules. Opera tionis
subje ctto thefo llo wing twocon dition s:1) These
de vice sma yno tcause harmful interfere nce, and
2) The sedevice smu stacc eptan yint erfere nce
re cei ved, includin gint erfere nce that ma ycaus e
unde sired oper ation.Chan gesor modif ications no
tex pressl yappr ovedby thepar tyresponsible
fo rcom pliance could void theuser's author ityto
oper ateth eeq uipment. "
Canada :"This vehicle contains license-e xemp t
tr ans mitter( s)/r ece iver( s)that com plywit hInno ‐
va tio n,Scie nceand Econo micDe velopmen tCan‐
ada ’sRSS (s).Operatio nis subj ectto thefo llo w‐
ing twocon dition s:(1) These device sma yno t
cause interfere nce, and(2)The sedevice smu st
acc eptan yint erfere nce, including interfere nce
th at ma ycaus eunde sired oper ationof the
de vice. "
US A:"W ireless chargin gsy stem formobil ede vi‐
ces (mode l:WMI2 Wireless Mobile Inte rface) :
th is de vice complies withPa rt18 oftheFCC
Ru les."
The name andaddr essofthepar tyresponsible
is:
peik eracus ticGmbH
Max-Planc k-St r.28-32
61 38 1Fr iedr ichsdor f
Ger man y Gener
alno tes 25

Diag
nostics connec tion
The diagn ostics conn ection isate ch nica lint er‐
fa ce intheve hicle. Itis used, forex am ple, within
th escope ofrepair andmaint enanc ewo rkor for
re adin gout vehicle databy aspec ialistwo rk‐
shop. Diagnos ticdevices should ther efor eonl y
be con nect edbyaqu alif ied spec ialistwo rkshop. &
WARNIN GRisk ofacci dent dueto con‐
necting device sto thediagnos ticscon‐
nect ion
If yo uco nn ect devic es tothediagnos tics
con nect ionoftheve hicle, thefunc tion of
ve hicle systems andoper ating safetyma ybe
im pair ed. #
Forsaf etyre ason s,we recomme ndthat
yo uon lyuse and conn ect produc ts
appr ovedby your aut hor izedMer cedes-
Ben zCen ter. &
WARNIN GRisk ofacci dent dueto
object sin thedr iver's foot we ll
Obj ectsin thedr iver's foot we llma yim pede
pedal trav el or bloc kadepr essed pedal.
This jeopar dizestheoper ating androad
saf etyof theve hicle. #
Stow allobj ect sin theve hicle secur ely
so that they canno tget intoth edr iver's
fo ot we ll. #
Alw aysins tallth efloor mats securely
and asprescr ibed inorder toensur e
th at ther eis alw ayssuf ficie ntroom for
th epedals. #
Donotuse loose floor mats anddonot
place floor mats ontopof one another. *
NO
TEBatt erydi sc ha rging from using
de vice sconne cted tothediagnos tics
con nect ion Using
devices atthediagnos ticsconnect ion
dr ains thebatt ery. #
Chec kth ech arge leve lof thebatt ery. #
Ifth ech arge leve lis low, charge the
batt ery, e.g. bydriving acon sider able
dis tance. Co
nnecti ngand using ano ther device withth e
diagnos ticsconnection canhave thefo llo wing
ef fects:
R Malfunctions intheve hicle system
R Perm anen tdamag eto vehicle component s 26
Gener alno tes

Please
referto thewa rrant yte rm sand condi‐
tions forth is matt er.
Mor eover,connecti ngequipme nttothediagnos‐
tics connect ioncan lead toemissions monitor‐
ing information beingrese t,forex am ple. This
ma ylead totheve hicle failing tomee tth e
re qu iremen tsof thene xt emissions inspection
dur ing themain inspect ion. Qualif
iedspecialis two rkshop
An author ized Mercedes-B enzCent erisaqu ali‐
fi ed specialis two rkshop. Ithas theneces sary
special skills,tools and qualif icat ionsto cor‐
re ctly carryout thewo rkrequ ired on your vehi‐
cle. This particular lyapplies tosaf ety-re leva nt
wo rks.
Fo rth efo llo wing, alwaysha ve your vehicle
ch eckedat an aut hor ized Mercedes- BenzCen‐
te r:
R Safety-re leva nt wo rks
R Service andmaintena nce work
R Repair work R
Modif ications aswellas installation sand
con versions
R Workon electr oniccomponent s
Mer cedes‑B enzrecomme ndsaMercedes‑Be nz
ser vice center. Co
rrect use oftheve hicl e
If yo ure mo veanywa rning sticke rs,yo uor other s
could failto recogni zecer tain dang ers. Lea ve
wa rning sticke rs inposit ion.
Obser vethefo llo wing informatio nin par ticular
when drivin gyo ur vehicle:
R thesaf etyno tesin this manual
R tech nica lda ta forth eve hicle
R traf fic ru les and regulations
R laws and safetyst andar dsper tainin gto
mo torve hicles No
tesfo rper sons with elec tron icmedi cal
aids
Me rcedes-B enzAGcanno t,des pite car efu lly
de veloping vehicle systems, completely rule out
th eint eraction ofvehicle systems withelectr onic
medical aidssuchas car diac pacemak ers.
In addition, ther ear ecom ponen tsins talled in
th eve hicle that, rega rdless oftheoper ating sta‐
tus oftheve hicle, cangener atema gne ticfields
on apar withper manen tmagne ts.These fields
can befound ,fo rex am ple, inthear ea around
th emultimedia andsound system oralso inthe
ar ea oftheseats, depending ontheve hicle
eq uipment.
Fo rth is reason ,th efo llo wing canoccurinisola‐
te dcases, dependin gon theaids used:
R Medical aidsmalfunct ioning
R Adversehealt hef fects
Obs erve theno tesand warnings ofthemanuf ac‐
tur erofthemedical aids;ifin doubt, contact the
de vice manuf acturerand/or your doc tor.If th er e
is con tinuin guncer taint ycon cerningth epossi‐
bility ofmedical aidsmalfunct ioning,Mercedes- Gener
alno tes 27

Benz
AGrecomme ndsusing only few elec trical
ve hicle systems and/or maintaining adis tance
fr om thecom ponen ts.
Onl yha ve repair sand maint enanc ewo rkinthe
ar ea ofthefo llo wing compone ntscar ried out by
a qu alif ied spec ialistwo rkshop:
R Vehicle component scar rying livevo ltag e
R Trans miss ionantenn a
R Mult imed iasystem and sound system
If yo uha ve anyqu eries orsugg estion s,con sult a
qu alif ied spec ialistwo rkshop. Pr
oblems withyour vehicl e
If yo usho uld exper ience apr oblem withyo ur
ve hicle, particular lyone that youbelie vema y
af fect its safeope ratio n,we urge youto cont act
an author ized Mercedes-B enzCent erimmedi‐
at ely tohave thepr oblem diagnosed andrecti‐
fi ed. Ifth epr oblem isno tre sol vedto your sat is‐
fa ction, plea se discu ssthepr oblem again with
an aut hor ized Mercedes- BenzCenteror,if nec‐
essar y,cont actusatone ofthefo llo wing
addr esses : In
theUS A:
Mer cede s-Benz USA,LLC
Cus tomer Assis tance Center
One Mercedes-B enzDrive
Sand ySpr ings,GA 30328
In Can ada:
Mer cedes-Be nzCanad a,Inc.
Cu stomer Relation sDepar tment
98 Vande rhoof Avenue
To ronto, Ont ario M4G 4C9 Re
por ting safetydef ects
US Aonl y:
The follo wing text ispu blished asrequ ired of
manuf acturersunder Title 49, Code ofU.S. Fed‐
er al Re gulations, Part57 5pur sua nttothe
"N atio nalTraf fic and MotorVe hicle SafetyAc tof
19 66".
If yo ubelie vethat your vehicle hasadef ect
whic hcould cause acr ash orcould cause injury
or deat h,yousho uld imm ediat elyinf orm the Na
tional HighwayTraf fic Saf etyAd minis tration
(NHT SA)in addition tonotify ing Mercede s-Benz
US A,LLC.
If NHT SArecei vessimilar complaints, itma y
open aninve stigation ,and ifit finds that asaf ety
def ect exists inagr oup ofvehicles, itma yor der
a re cal land remedy campaign. However,NHT SA
canno tbeco meinvo lved inindiv idual problems
be tween you, your dealer ,or Mer cedes-Ben z
US A,LLC.
To cont actNHT SA,yo uma ycall theVe hicle
Saf etyHo tlin e to ll-f reeat 1-8 88-327-4 236
(TT Y:1-800-42 4-9153);go tothehtt ps:/ /
www .safercar .go v/;or write to :Ad minis trat or ,
NHT SA,400 SeventhSt reet,SW .,Wa shingt on,
DC 20590,: USA.
Yo ucan also obtain other information about
mo torve hicle safetyfrom: http s://
www .saf er car .gov
Cana daonl y:
The follo wing text ispu blished asrequ ired of
manuf acturersunder subsec tion18.4 (4) ofthe
Mo torVe hicle SafetyRe gulations. 28
Gener alno tes

If
yo ubelie vethat your vehicle hasadef ect
whic hcould cause acr ash orcould cause injury
or deat h,yousho uld imm ediat elyinf orm Trans ‐
por tCanada inaddit iontonotify ing Mercede s-
Benz Canad aInc.
If Trans portCanada recei vedsimilar complaints,
it ma yopen aninve stigation ,and ifit finds that a
saf etydef ectex ists inagr oup ofvehicles, itma y
or der are cal land remedy campaign. Howe ver,
Tr ans portCanada cannotbec ome invo lved in
individual problems between you, your dealer or
Mer cedes-Ben zCanad aIn c.
To cont actTrans portCanada, youma ycall the
Def ect Inve stigation sand Recal lsDivi sionto ll-
fr ee inCanada at1-800 -333- 0510 or
81 9-99 4-3328 intheGatineau-Ot tawa area or
int ernat ionally; youma yalso gotothefo llo wing
we bsit esformor einf ormation:
R Eng lish:https://www .tc.gc.ca/recalls
R Frenc h:htt ps:/ /www .tc.gc .ca/ rappels Limit
edWa rranty
* NO
TEDama getotheve hicle arising
fr om violation ofthese oper ating instruc‐
tion s. Damag
eto theve hicle canarise from viola‐
tion ofthese oper ating instruction s.
This damag eis no tco veredeit her bythe
Mer cedes-Ben zim plied warrant yor by the
Ne w‑ orUsed- Vehicle Warrant y. #
Followtheins truction sin these oper at‐
ing instruction son proper operation of
yo ur vehicle aswellas on possible vehi‐
cle damag e. QR
code forre scue card
QR codes areatt ached inthefuel filler flap and
on theopposit eside ontheB-pillar .In theeve nt
of an acci dent, rescue services canusetheQR
code toquickl yfind theappr opriatere scue card
fo ryo ur vehicle. Thecurrent rescue cardcon‐
ta ins themos tim por tant informa tionab ou tyo ur ve
hicle inacom pact form ,e.g. thero utin gof the
electr iclines.
Fu rther information canbeobt ained athttps: //
www .mercedes-benz .de/qr-code. Data
storage Data
processi ngintheve hicl e Ele
ctroni cco ntr olunits
Electr oniccontr olunits areins talled inyour vehi‐
cle. Contr olunits process datawhic h,forex am‐
ple, they recei vefrom vehicle sensor s,ge ner ate
th emselv esorexch ang ebe tween themselv es.
Some control units arere qu ired forth esaf e
oper ation ofyour vehicle, some assistyo uwhen
dr ivin g,suc has driver assis tance systems, while
ot her senable comfortor infotainm entfunction s.
The follo wing prov ides youwit hge ner alinf orma ‐
tio nre ga rding datapr oces sing intheve hicle.
Ad dition alinf ormation rega rding exact lywh ich
da ta inyour vehicle arecollect ed,save dand
tra nsm itted tothird par ties and forwha tpur‐
pose, canbefound intheinf ormation direct ly
re lat ed tothefunc tionalch aract eristic sin qu es‐ Gener
alno tes 29

tio
nin their respectiv eoper ating instructions.
This information isalso available online and,
depen dingon theve hicle equipment, digitally.
Pe rsonal data
Ev eryve hicle isidentif iedbyauniq uevehicle
identif ication number .Depending onthecoun‐
tr y, this vehicle identif ication number canbe
used by,fo rex am ple, government alau thor ities
to determ ine theidentit yof theow ner .The reare
ot her possibili tiestouse dataco llec tedfrom the
ve hicle toident ifytheow ner ordriver ,su ch as
th elicense platenumber .
Ther efor e, dat age ner ated orproce ssedby con‐
tr ol uni tsma ybe attr ibut ab leto aper son or,
unde rcer tain con dition s,becom eatt ribut able to
a per son .De pen dingon whic hve hicle dataar e
av ailable, itma ybe poss ibletomak einf erences
abou t,forex am ple, your drivin gbeha vior,yo ur
loc atio n,your routeor your use pattern s.
Leg alrequ irement sre ga rding thedisclos ure
of data
If leg allyre qu ired todo so, manuf acturersar e, in
individual cases,legallyoblig edtoprov ide gov‐
er nm ent alent ities ,upon requ estand tothe ex
tent requ ired, datast or ed bythemanuf ac‐
tur er.Fo rex am ple, this ma ybe thecase during
th einve stigation ofacr imin aloffense.
Go vernment alentities areth emselv es,inindivid‐
ual cases andwithin theapplicable legalframe‐
wo rk,aut hor ized toread out datafrom theve hi‐
cle. Inthecase ofan acciden t,inf ormation that
can help withan inve stigation can,th er efor e, be
ta ke nfrom theairbag control unit, forex am ple.
Oper ational data intheve hicl e
This isdat are ga rding theoper ation oftheve hi‐
cle, whic hha ve been processed bycontr oluni ts.
Thi sincl udes thefo llo wing data,forex am ple:
R Vehicle status informat ionsuchas thespeed,
longitudin alacceler ation,lateral accelera ‐
tion ,number ofwheel revo lution sor thefa s‐
te ned seatbe lts displ ay
R Ambi entcond itions, such astemp eratur e,
ra in sen sor ordis tance sens or
Ge ner ally,th euse ofthese datais temp orar y;
th ey will notbe stor ed beyond theper iod of
oper ation andwillonlybe processed within the
ve hicle itself. Controlunits oftencont ain da ta memor
iesforve hicle keys,fo rex am ple. Their
use permitsth ete mp orar yor per manent docu‐
ment ation oftech nica linf orma tionab ou tth e
ve hicle's operating stat e, com ponent loads,
main tenance requ iremen tsand tech nica leve nts
or ma lfunctio ns.
Dep endingontheve hicle equipment, thefo llo w‐
ing dataar estor ed:
R Oper ating status ofsystem com ponen ts,
suc has fill le ve ls, tirepr essur eor batt ery
st atus
R Malfun ction sor faults inim por tant system
com ponen ts,suc has lights orbrak es
R System react ionsin spec ialdrivin gsit ua‐
tio ns,suc has airbag deploymentor theint er‐
ve ntio nof stabilit ycon trol systems
R Information oneve nts lead ing tovehicle
damag e
In cer taincas es, itma ybe requ ired tostor edat a
th at wo uld have other wise been usedonlyte m‐
por arily. This maybe thecase ifth eve hicle has
de tected amal functi on,forex am ple. 30
Generalno tes