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

*
NO
TEImpairment oftheoper ating effi‐
cie ncy ofthere stra int systems from
ins talling accessor ypar tsor from repair s
or we lding Air
bags andEmerge ncy Tensi oni ng Device s,
as wellas con trol unit sand sensorsfo rth e
re stra int systems, maybe installed inthefo l‐
lo wing areas ofyour vehicle:
R Door s
R Door pillars
R Doo rsi lls
R Sea ts
R Cockpit
R Instrument cluster
R Cen terconsole
R Lateral roof frame #
Donotins tallacc essor ypar tssuc has
audio systems inthese areas. #
Donotcar ryout repair sor we lding. #
Have afte rm arke tins tallation ofacc es‐
sor ies carried out ataqu alif ied spec ial‐
is two rkshop. Yo
uco uld jeopar dizeth eoper ating safetyof your
ve hicle ifyo uuse parts,tir es and wheel sas well
as acc essor iesreleva nt tosaf etywhic hha ve not
be en approve dby Mer cedes-Ben z.Saf ety-re le‐
va nt systems, e.g.thebr ak esy stem, maymal‐
func tion.Onl yuse Mercedes- BenzGenuineP arts
or par tsof equal qualit y.Onl yuse tires, wheels
and accessor iesthat have been specif ically
appr ovedfo ryo ur vehicle model.
Mer cedes-Ben zGenuineP arts aresubject to
st rict qualit yins pec tions.Eac hpar thas been
spec iallyde veloped, manufactured orselec ted
fo rMer cedes-Benz vehicles andadap tedto
th em. Ther efor e, onl yMer cedes- BenzGenuine‐
Pa rts should beused.
Mor eth an 300,0 00 differe nt Mer cedes-Be nz
Ge nui neP arts areav ailable forMer cedes-Benz
model s.
All author ized Mercedes-B enzCent ersmaint ain
a supply ofMer cedes-B enzGenuineP arts for nece
ssaryser vice andrepair work.In addition,
st ra tegically locatedpar tsdeliv erycent erspr o‐
vide forqu ick and reliable partsser vice .
Alw aysspecify theve hicle identif ication number
(VIN) (/page38 7) when order ing Mer cedes-
Benz GenuineP arts. Oper
ator's Manual
This Oper ator's Manual describesallmodels and
all standar dand optio nal equipme ntavailable for
yo ur vehicle atthetime ofthis Opera tor's Man‐
ua lgoing topress. Countr y-specif icdif fere nces
ar epo ssi ble. No tethat your vehicle mayno tbe
eq uipped withall featur esdesc ribed. Thisisalso
th ecase forsy stems andfunc tionsre leva nt to
saf ety. Ther efor e, theeq uipment onyour vehicle
ma ydif ferfr om that inthedescr iption sand illus‐
tra tion s.
The original purchase agreement foryo ur vehicle
cont ains alis tof all ofthesy stems inyour vehi‐
cle.
Should youha ve anyqu estion scon cerning
eq uipment andoper ation, please consult an
aut hor ized Mercedes- BenzCenter. 22
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

te
m wa rning lam plight sup. Itgoes outnolater
th an afe w sec ond saf te rth eve hicle isstar ted.
The com ponen tsof there stra int system areth en
func tional. Malfu
nctioning restra int system A
malfun ction has occurredin there stra int sys‐
te m if:
R The 0075 restra int system warning lam p
does notlight upwhen theignition is
switc hedon
R The 0075 restra int system warning lam p
light sup con tinuousl yor repeat edly during a
jour ney &
WARNIN GRisk ofinju rydue tomalfu nc‐
tions inthere stra int system
Com ponen tsinthere stra int system maybe
activ ated unint entionall yor notdeplo yas
planned inan acciden t. #
Have there stra int system checkedand
re pair edimmediat elyat aqu alif ied spe‐
cialis two rkshop. Fu
nction ofthere stra int system inan acci‐
dent Ho
wthere stra int system worksis de term ined by
th ese verity of theim pact detected and thetype
of acciden tantic ipated:
R Front alim pact
R Rear impact
R Sideim pact
R Rollover
The activ ation thre sholds forth ecom ponen tsof
th ere stra int system arede term ined based on
th eev aluatio nof thesensor values measur edat
va rious points intheve hicle. Thisprocess ispre-
em ptive in nat ure. The trigg ering/ deplo yment of
th ecom ponen tsof there stra int system mus t
ta ke place ingood timeatthest ar tof thecolli‐
sion.
Fa ctor swhi chcan only besee nand measured
af te ra colli sion hasoccur reddo notpla ya deci‐
siv ero le in thedeplo yment ofan airbag. Nordo
th ey prov ide anindic ation ofairbag deployment .
The vehicle maybe def ormed signif icantl ywit h‐
out anairbag beingdeployed. This isthecase if onl
ypar tswhic har ere lativ elyeasil ydef ormed
ar eaf fect ed and thera te ofvehicle deceler ation
is no thigh. Conversely ,an airbag maybe
deplo yedev en though theve hicle suffers onl y
minor deformation. Ifve ry rigid vehicle parts
suc has longitudinal membersar ehit, this ma y
re sult insuf ficie ntly highleve ls of vehicle decel‐
er ation.
Depending onthede tected dep loyme ntsitu a‐
tion, thecom ponen tsof there stra int system can
be activ ated ordeplo yedindepen dentlyof eac h
ot her :
R Emer gency Tensi oni ng Device :fr ont al
im pa ct, rear impact ,side impact ,ro llo ver
R Driver' sai rba g,front passe nger airba g:fron‐
ta lim pact
R Knee airbag: front alim pact
R Side airbag: sideimpact
R Head airbag: sideimpact ,ro llo ver,front al
im pact
The front passeng erairb agcan onlybe depl oyed
in an acciden tif th ePA SSENGER AIRBAGOF F
ind icat orlam pis off.Ifth efront passeng erseat 36
Occupant safety

R
Alw aysst or eand secur eobject scor rectly .
Obje ctsintheve hicle interior maypr eve ntan
ai rba gfrom func tioning correctly .Eac hve hicle
occupant mustalw aysmak esur eof thefo llo w‐
ing inpar ticular :
R Ther ear eno people, animals orobje cts
be tween theve hicle occupants andanair‐
bag.
R Ther ear eno object sbe tween theseat, door
and door pillar (B-pillar).
R Ther ear eno har dobjec ts,e.g. coat hangers,
hanging onthegr ab handles orcoat hooks.
R Ther ear eno accessor ypar ts,suc has mobile
na vig ation devices, mobile phones orcup
holder s,wit hin thedeplo yment area ofan air‐
bag, e.g.onthecoc kpit, onthedoor ,on the
side windo wor on theside trim.
In addition, nocon nect ingcables, tensi oni ng
st ra ps orretainin gst ra ps mus tbe routed or
attac hedtotheve hicle within thedeplo y‐
ment area ofan airbag. Alwayscom plywith
th eaccessor ymanuf acturer'sinstallation
ins truct ions and, inpar ticular ,th eno teson
suit able places forins tallation . R
Ther ear eno hea vy,shar p-edg edorfragile
obje ctsin thepoc kets of your clo thing. Store
suc hobject sin asuit able place. Limit
edprotection prov ided byairbags &
WARNIN GRisk ofinju rydue tomodif i‐
cations totheco verof an airb ag
If yo umod ifytheco verof an airb agoraffix
object ssuc has sticke rs to it,theairbag may
no long erfunc tion correctl y. #
Nevermodify theco verof an airb agand
do notaf fix obje ctstoit. The
installation locationofan airbag isident ified
by theAIRB AGsymbol (/page42). &
WARNIN GRisk ofinju ryor deat hdue to
th euse ofunsuit ableseat covers
Due touns uitable seat covers,th eairbags
cann otprotect vehicle occupants asinten‐
ded. In
addition, theoper ation oftheaut omatic
fr ont passeng erairbag shutoffcould be
re strict ed. #
Yousho uld onlyuse seat covers that
ha ve been approved forth ecor respond‐
ing seats byMer cedes-Ben z. &
WARNIN GRisk ofinju rydue tomalfu nc‐
tioning sensorsin thedoor
The func tion oftheairbags canbeimpair ed
due tomodif icationsorincor rect wo rkper‐
fo rm ed on thedoor sor door trim, orifth e
door sar edamag ed. #
Nevermodify thedoor sor par tsof the
door s. #
Alw aysha ve wo rkon thedoor sor door
tr im car ried out ataqu alif ied spec ialist
wo rkshop. &
WARNIN GRisk ofinju rydue todeplo yed
airbag
A deplo yedairbag nolong eroffers anypr o‐
te ction. 44
Occupant safety

Cor
nering light Cor
nering light function The
corner ing light improve sth eillumination of
th ero ad ove ra wid eang lein thetur ning direc‐
tion ,enabling better visibility ontight curves, for
ex am ple. Itcan beact ivat ed onlywhen thelow
beam isswitc hedon.
The func tion isactiv ein thefo llo wing cases :
R Atspeeds below25 mph(4 0km/h) when
th etur nsignal lightisswitc hedonorthe
st eer ing wheel istur ned R
Atspeeds between 25mph(40 km/h) and
43 mph(70 km/h) andwhen thesteer ing
wheel istur ned
Ro undabout andintersec tion functi on:the
cor ner ing light willbe acti vatedon both sides
based onanevaluatio nof theve hicle's current
GP Spo sitio n.Itwi llre main activeuntil afte rth e
ve hicle hasleftth ero und about ortheint ersec‐
tion . Ad
aptiv eHighb eamAssist Ad
aptiv eHighb eamAssistfuncti on &
WARNIN GRisk ofacci dent despite
Ad aptiveHig hbeam Assis t
Ad aptiveHig hbeam Assis tdoes notre act to:
R Road user swit hout lights,e.g .pedes ‐
tr ians
R Road user swit hpoor lighting,e.g .
cy clis ts
R Road user swhos elight ingisobs truct ed,
e.g .by abar rier On
very rare occasions, AdaptiveHig hbeam
As sis tma yfa ilto recogni zeother road user s
wit hth eir ownlighti ng,orma yre cogni ze
th em toolat e.
In these, orinsimilar situation s,theaut o‐
matic highbeam willnotbe deactiv ated or
will beactiv ated despit eth epr esenc eof
ot her road user s. #
Alw aysobser vethero ad and traffic
condi tions carefu llyand switchof fth e
high beam ingood time. Ad
aptiveHig hbeam Assis tcan notta ke into
acc ount road, weather ortraf fic condi tions.
De tection maybe restrict ed inthefo llo wing
cases :
R Inpoor visibilit y,e.g. fog, hea vyrain or sno w
R Ifth er eis dir ton thesensor sor thesensor s
ar eobscur ed
Ad aptiveHig hbeam Assis tis on lyan aid. Youar e
re sponsible foradju sting theve hicle's lighting to
th epr eva iling light,visibilit yand traffic condi ‐
tions . Lig
htand visibility 111

Ad
aptiveHig hbeam Assis taut omat ically
swit ches between thefo llo wing types oflight :
R Lowbeam
R High beam
At speeds great erthan 19 mp h(3 0km/h):
R Ifno other road user sar ede tected, thehigh
beam willswitc hon aut omaticall y. The
high beam willswitc hof faut omaticall yin
th efo llo wing cases :
R Atspeeds below16 mp h(25 km/h)
R Ifot her road user sar ede tected
R Ifstre et light ingissuf ficie nt
% The system's optical sensor islocat ed
behind thewindshield neartheove rhead
con trol panel.
Switc hingAdaptiv eHighb eamAssiston/ off
Swi tching on #
Turn thelight switc hto the 0058 position . #
Switc hon thehigh beam usingthecombin a‐
tion switc h.
If Ad aptiveHig hbeam Assis tis act ivat ed,
th e00CE indicat orlam pwill light upon the
multifu nctiondisplay.
Switc hingoff #
Switc hof fth ehigh beam usingthecombin a‐
tion switc h. Switc
hingtheda ytime running lampson/of f Multimedia
system:
4 Vehicle 5
÷ LightSetting s
5 Daytime Run.Lights #
Activate0073 ordeacti vate 0053 thefunc tion. Se
tting theex terior light ingswitc h-of fdela y
tim e Mult
imedia system:
4 Vehicle 5
÷ LightSetting s
5 Ext.Light SwitchOff #
Setth eswitc h-offdela ytime. Se
tting thesur round lighting Mul
timedi asy stem:
4 Vehicle 5
÷ LightSetting s
5 Locat orLightin g #
Activate0073 ordeacti vate 0053 thefunc tion.
If th esur round lightingisswit ched on, theex te‐
ri or lighting remains litfor40 seconds afte rth e 11
2
Light andvisib ility

The
inside rear vie wmir rorand theoutside mir‐
ro ron thedr iver's side willautomaticall ygo into
anti- glar emode iflight from aheadlam phit sth e
sensor ontheinside rear vie wmir ror.
Sy stem limit s
The system will notgo intoanti- glar emode if:
R The engineisswit ched off.
R Reversege ar iseng aged.
R The interior light ingisswit ched on. Fr
ont- passeng erout side mirrorpar kingpos i‐
tio nfun ction The
parking posit ionmak espar kingeasier .
The front -pass engerouts idemirrorwil lswiv el
do wn wardsin thedir ect ion ofthere ar wheel on
th efront passeng er'sside when:
R The parking position isstor ed (/ page11 8).
R Thefron t-pa ssenger mirror isselect ed.
R Reversege ar iseng aged. The
fron t-passe nger out side mirrorwil lmo ve
bac kto its original positionwhen:
R Youshif tth etransmission toano ther trans‐
mission position.
R Youar etra veling ataspeed grea terth an
9 mp h(1 5 km/h).
R Youpr ess thebutt onforth eoutside mirror
on thedr iver's side. St
oring thepa rking posit ionofthefront-
pa sseng erout side mirrorusi ng reve rsege ar St
oring #
Sele ctthefront -passen geroutsi demir ror
usin gbut ton2. #
Eng agere ve rsege ar. #
Movethefront -passen geroutsi demir rorint o
th edesir edpar king position usingbutton1. 11
8
Light andvisib ility

Br
eak ing-i nno tes To
preser vetheengine during thefirs t
10 00 mile s(1 500 km):
R Drive at varying road spee dsand engine
spee ds.
R Donotdr ive at spee dsgrea terth an 85 mph
(1 40 km/ h).
R Drive th eve hicle indrive pr ogr am A
or ;.
R Shif tto thene xt highes tge ar attheve ry lat‐
es twhen theneedle reac hes thelas tth ird
bef oreth ere dar ea intheta ch ome ter.
R Donotshi ftdo wn age ar man uallyin order to
br ak e.
R Avoid overstrai ning theve hicle, e.g.driving at
full thro ttle .
R Donotde pres sth eacceler ator pedal past
th epr essur epoint (kickdo wn).
R Onlyincr ease theengine speedgraduallyand
accelera tetheve hicle tofull spee daf te r
10 00 mile s(1 500 km). This
also app lieswhe nth eengine orpar tsof the
dr ivet ra in have been replaced.
Please alsoobser vethefo llo wing breakin g-in
no tes:
R Incer tain drivin gand drivin gsaf etysy stems,
th esensor sadjus taut omaticall ywhile acer‐
ta in dis tance isbe ing driven afte rth eve hicle
has been delivered orafte rre pair s.Fu llsy s‐
te m effectiv enes sis no tre ac hed untilth e
end ofthis teac h-in proce ss.
R Brak epads ,br ak edisc sand tires that are
eit her newor have been replaced onlyac h‐
ie ve optimum braking effect and grip afte r
se veralhundr edkilom eter sof driving. Com‐
pensat efo rth ere duced braking effect by
appl ying grea terfo rc eto thebr ak epedal. No
teson optimiz edacceler ation If
all necess aryre qu iremen tsand activation con‐
dition sar efulf illed, thebes tpossible accelera‐
tion canbeachie vedfrom ast ands till.
Do notuse theop timiz edaccelera tiononpublic
ro ads. Individ ualwheels couldspin andyou cou
ldlos econtr olof theve hicle. Thereis an
incr eased risk ofskidding and/oraccident.
Be sureto obser vethesaf etyno tesand informa‐
tion onESP ®
(/ page15 2). Pull
ingaway wit hop timi zed accel eration &
WARNIN GRisk ofskid ding and having
an acci dent from whe elsspi nning
Whe nyo uuse optim izedacc eler ation,ind i‐
vidual wheelsco uld spin andyouco uld lose
co ntro lof theve hicle.
If ESP ®
is deactiv ated, ther eis arisk ofskid‐
ding andaccident. #
Mak esur eth at no per son sor obs tacles
ar ein theclose vicinityofyour vehicle. Re
quirement s:
R The vehicle hasbeen brok en in
(/ page12 8).
R Theve hicle andtires arein good condition.
R Youar eon ahigh -grip ro adw ay. 12
8
Driving and parking

Ac
tiv atin g/deac tivatin gst andb ymode
Mul timedi asy stem:
4 Vehicle 5
î Vehicle Setting s
5 Standby Mode
% This function isno tav ailable forall model s. #
Activate0073 ordeacti vate 0053 thefunc tion.
When youact ivat eth efunc tion,a pr om pt
appear s. #
Select Yes.
St andb ymode isact ivat ed. Dr
iving anddriving safetysy stems Dr
iving systems andyour responsibility Yo
ur vehicle iseq uipped withdr iving systems
whic hassis tyo uin drivin g,par kingand man eu‐
ve ring theve hicle. Thedriving systems areonl y
aids. Theyar eno ta subs titutefo ryo ur att entio n
to thesur round ingsand donotre lie ve youof
yo ur responsibili typer tainin gto road traf fic law.
The driver isalw aysre sponsible formaint aining
a saf edis tance totheve hicle infront, forve hicle
speed, forbr aking ingood timeandforst ay ing
in lane. Payatt ention tothetra ffic con dition sat all
tim esand interve ne when nece ssary.Be
aw areof thelimit ations rega rding thesaf euse of
th ese systems.
Dr iving systems canneither reduce therisk of
accident ifyo ufa ilto adap tyo ur drivin gst yle nor
ove rride thelaws ofphysics. Theycan notalw ays
ta ke intoacc ount road, weather ortraf fic condi ‐
tions . In
fo rm ation onvehicl esen sorsand camer as Some
driving anddriving safetysy stems use
camer asaswellas radar orultr asonic sensors
to monit orthear ea infront of,behind ornext to
th eve hicle. %
The radar sensor sar eint egratedbehind the
bum persand/or behindtheMer cedes star .
1 Cameras intheoutside mirrors
2 Multifunction camera
3 Front camer a
4 Ultrasonic sensors
5 Rear vie wcam era 15
0
Driving and parking

&
WARNIN GRisk ofacci dent dueto
re strict ed detection perform anc eof vehi‐
cle sensor sand camer as
If th ear ea around vehicle sensor sor cam‐
er as isco vered, damag edordir ty,cer tain
dr ivin gand safetysy stems cann otfunction
cor rectly .The reisarisk ofan accident. #
Keep thear ea around vehicle sensor s
or camer asclear ofanyobs tructions
and clean. #
Have damag eto thebum per,ra diat or
gr ille orstone chipping inthear ea of
th efront and rear wind owsrepair edat
a qu alif ied spec ialistwo rkshop. Pa
rticular ly,ke ep thear eas around thesensor s
and camer asfree ofdir t,ice orslush
(/ page329). Thesensor sand camer asmus t
no tbe coveredand thede tection rang es arou nd
th em mus tbe kept free. Donotatt achadd itiona l
lice nse platebrac kets, advertisemen ts,sticke rs,
fo ils orfoils toprotect agains tst one chipping sin
th ede tection rang eof thesensor sand camer as. Mak
esur eth at ther ear eno ove rhang ingloads
pr otru ding intoth ede tection rang e.
If th er eis damag eto abum perorthera diat or
gr ille, orafte ran impact, have thefunc tion of
th esensor sch eckedat aqu alif ied spec ialist
wo rkshop. Have damag eor stone chipping inthe
ar ea ofthecamer ason thewindshield andrear
wind owrepair edataqu alif ied spec ialistwo rk‐
shop. Ov
ervie wof driving systems anddriving
saf etysy stems R
ABS(Ant i-lockBra king System)
(/ page15 2)
R BAS(Brak eAssis tSys tem) (/ page15 2)
R ESP ®
(Electr onicStability Program)
(/ page15 2)
R ESP ®
Cr ossw indAssis t(/ page15 3)
R EBD (Ele ctroni cBrak efor ce Dis tribution)
(/ page15 4)
R STEER CONTR OL(/ page 154)
R HOLD functio n(/ page 154) R
HillSt artAs sis t(/ page15 5)
R ATTENTION ASSIST(/ page15 6)
R Cruis econtr ol(/ page 157)
R Traf fic Sign Assist(/ pag e17 5)
R DYNA MIC BODY CONT ROL(/ page18 2)
R AIRMA TIC(/ page18 2)
Dr ivi ng Ass istan cepac kage
The follo wing functionsar epar tof theDr iving
Assis tance Packag e. Cer tain func tionsar eonl y
av ailable insom ecoun tries. Som efun ction sar e
also available without theDr iving Assistance
Pa ckag e, albeit withre strict ed functi onality.
R ActiveDis tance AssistDIS TRONI C
(/ page 159)
R ActiveSpe edLimi tAssi st(coun try- depend‐
ent )(/ page16 3)
R Route-based speedadap tatio n(co untr y-
dependen t)(/ page16 4)
R ActiveBr ak eAssi st(/ pag e17 0)
R ActiveSt eer ing Assis t(count ry-de pende nt)
(/ page 166) Dr
iving and parking 15
1