light MERCEDES-BENZ C-CLASS CABRIOLET 2019 User Guide

Re
stra int system functiona lity When
theignition isswitc hedon,aself-t estis
per form ed, during whic hth e0075 restra int sys‐
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 the0075 restra int system warning lam pdoes
no tlight upwhen theignition isswitc hedon
R the0075 restra int system warning lam p
light sup con tinuousl yor repeat edly during a
jour ney 000A
WARNIN GRisk ofinju ryor fata linj ury
due toamalf unctionin there stra int sys‐
te m
If th ere stra int system ismalfunct ioning,
re stra int system com ponen tsma ybe trig‐ ge
redunint entionall yor might notbe trig‐
ge redat all intheev ent ofan acciden t.This
ma yaf fect theEmer gency Tensi oni ng Device
or airba g,forex am ple. 0007
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 ofth
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, forex am‐
ple, this ma yre sult insuf ficie ntly highleve ls of
ve hicle deceler ation. 34
Occupant safety

0007
Mak esur eth at theseat belts are
undamag ed,notwo rnand clean. 0007
Alw aysha ve theseat belts checked
immed iatelyaf te ran accide ntata
qu alif ied spec ialistwo rkshop. Onl
yuse seat belts whichha ve been approved
fo ryo ur vehicle byMer cedes-Ben z. 000A
WARNIN GRisk ofinju ryor deat hfrom
deplo yedpy rotech nic Emerg encyTen‐
si oni ng Device s
Py rotech nic Emerg encyTensi oni ng Device s
th at have been deployedar eno long eroper a‐
tion aland areunable toper form their inten‐
ded protect ive func tion. 0007
Ther efor e, have deplo yedpy rotech nic
Emerg encyTensi oni ng Device simm edi‐
at ely replaced ataqu alif ied spec ialist
wo rkshop. Mer
cedes-Benz recomme ndsthat youha ve the
ve hicle towe dto aqu alif ied spec ialistwo rkshop
af te ran accide nt. 000E
NO
TEDama gecau sed bytrap ping the
seat belt If
an unused seatbeltisno tfully retract ed,it
ma ybe come trap pe din thedoor orinthe
seat mechanism. 0007
Alw aysensur eth at an unus edseat belt
is full yre tract ed. Ex
tending/r etra ctin gth eseat beltextender The
seat beltextende rfo rth efront seat helps
yo ufa sten your seat belt.When thedoor is
closed, theseat beltextende rex tends.
The seatbe ltex tende rbu tton mayal so be loca‐
te din thecon trol panel abovethelight switc hin
Mer cedes- AMGvehicles.
Yo ucan also extend theseat beltextende rus ing
th eseat beltextende rbu tton. 0007
Swi tchon theignition . 0007
Press seat beltextende rbu tton 1.
The seatbe ltex tende rex tends.
The seatbe ltex tende rre tracts again in thefo l‐
lo wing cases :
R The seat belttongu eis eng aged intheseat
belt buckle 38
Occupant safety

0007
Onlyone person should useeachseat
belt atanyone time. Seat
beltadjustmen tfun ction Ve
hicl eswith PRE-S AFE®
:If th efront seat belt
is no tpulled tightacross your body ,th eseat belt
adjus tmentma yaut omaticall yapply acer tain
tigh tening forc e. Do nothold theseat belttight ly
while itis adjus ting.
Yo ucan activat eand deac tivateth eseat belt
adjus tmentfunc tion using themultimedia sys‐
te m (0013 page40) . Re
leasing seatbelts 0007
Press there lease buttonintheseat belt
buc kleand guide theseat beltbackwit hth e
seat belttongu e. Ac
tiv atin g/deac tivatin gse at beltadjus tment
vi athe multi mediasy stem Multi
media system:
0018 Vehicle 0019
î Vehicle Setting s
0019 Belt Adjustmen t 0007
Activate0073 ordeacti vate 0053 thefunc tion. Seat
beltwarning funct ionforthe driver and
fr on tpass enger The
00E9 seatbeltwarning lam pin theIns tru‐
ment Displa yis are minder that all vehicle occu‐
pants mustwe artheir seat belts correctly .
The 00E9 seatbel twa rning lam plight sup forsix
seconds everytim eth eve hicle isstar ted.
In addition, awa rning tone maysou nd.
Whe nth edr iver's andfront passeng er'sdoor s
ar eclosed andthedr iver and front passeng er
ha ve fastened their seat belts, theseat belt
wa rning goes out. In
thefo llo wing cases ,th eseat beltwarning
light sup dur ing ajour neyif:
R The vehicle speed exceeds 15mp h
(25 km/ h)and thedr iver's orfront
passeng erseat beltisno tfa stened.
R The driver or front passeng erunf astens their
seat beltwhile theve hicle isin mo tion. Airbags
Ov
ervie wof airbags 1
Driver's knee bag
2 Driver's airbag 40
Occupant safety

R
The front passeng erseat hasbeen moved
as farbac kas possi ble.
R The person isseat edcor rectl y. 0007
Ensu re,bo th bef oreand during thejour‐
ne y,that thest atus ofthefront
passeng erairbag iscor rect. If
th efront passeng erseat isoccupied, theclas‐
sif ication oftheper son orchild restra int system
on thefront passeng erseat take splace afte rth e
fr ont passeng erfront airbagshut offself-t est.
The PASSENGER AIRBAGind icat orlam psdis‐
pla yth est atus ofthefront passeng erfront air‐
bag.
Alw aysobser vetheno teson thefunc tion ofthe
PA SSENGER AIRBAGind icat orlam ps
(0013 page45). Fu
nction ofthePA SSEN GERAIRBAGindic a‐
to rlam ps Se
lf-te st of aut oma ticfront passeng erfront
air bag shutoff
When theignition isswitc hedon,aself-t estis
per form ed dur ing whic hth etw oPA SSENGER
AIR BAGON and OFFind icat orlam pslight up
simul taneou sly. The
status ofthefront passeng erfront airbag is
displa yedaf te rth eself-t est:
R PASSENGER AIRBAGON light sup for
60 seconds ,sub sequently both indic ator
lam psareof f(P AS SENGER AIR BA GON and
OF F): thefront passeng erfront airbag isable
to deplo yin theeve ntofan acci dent.
R PASSENGER AIRBAGOF Flight sup con tinu‐
ousl y:thefront passeng erfront airbag isdis‐
abled. Itwill then notbe deplo yedin the
eve ntofan acci dent.
If th ePA SSENGER AIRBAGON indicat orlam pis
of f,on lythePA SSENGER AIRBAGOF Find icat or
lam psho wsthest atus ofthefront passeng er
fr ont airbag. ThePASSENGER AIRBAGOF Find i‐
cat orlam pma ybe litcon tinuousl yor be off.
If th ePA SSENGER AIRBAGOF Find icat orlam p
and the0075 restra int system warning lam p
light upsimultaneousl y,thefront passeng erseat
ma yno tbe used. Alsointhis case, donotins tall
a ch ild restra int system onthefront passeng er
seat. Have aut omat icfron tpasse nger fron tair‐
bag shut offch eckedand repair edimmediat elyat
a qu alif ied spec ialistwo rkshop. Occupant
safety 45

th
eseat beltoutle t.Ifneces sary,adjus t
th efront passeng erseat accor dingly. 0007
Alw aysobser vethech ild restra int sys‐
te m manuf acturer'sinstallation instruc‐
tion s. When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (0013page60).
If aper son issitting onthefront passeng er
seat :PA SSENGER AIRBAGOF Fma ybe litcon ‐
tin uousl yor be off,depen dingon theper son's
st atur e.
A per son onthefront passeng erseat must
alw aysobser vethefo llo wing informatio n:
R Ifth efront passeng erseat isoccupied byan
adult oraper son withast atur ecor respond‐
ing tothat ofan adult ,th ePA SSENGER AIR
BA GOF Find icat orlam pmus tbe off.This
ind icat esthat thefront passeng erfront air‐
bag isenabled.
If th ePA SSENGER AIRBAGOF Find icat or
lam pis lit con tinuousl y,an adult orper son wit
habuild corresponding tothat ofan adult
shoul dno tuse thefront passeng erseat.
Ins tead, they should useare ar seat .
R Ifth efront passeng erseat isoccupied bya
per son ofsmaller statur e(e. g.ate enag eror
small adult), thePA SSENGER AIRBAGOF F
ind icat orlam peit her light sup con tinuousl y
or remains off,depe nding onthere sult ofthe
cla ssificati on.
- Ifth ePA SSENGER AIRBAGOF Find icat or
lam pis off:mo vethefront passeng er
seat asfarbac kas possi ble,ortheper‐
son ofsmaller statur eshoul duse are ar
seat .
- Ifth ePA SSENGER AIRBAGOF Find icat or
lam pis lit con tinuousl y:theper son of
smaller statur eshoul dno tuse thefront
passeng erseat. 000A
WARNIN GRisk ofinju ryor deat hwhen
th ePA SSENGER AIRBAGOF Find icat or
lam pis lit
If th ePA SSENGER AIRBAGOF Find icat or
lam pre mains litafte rth esy stem self-t est,
th efront passeng erair bag isdeactiv ated. It
will notbe deplo yedin theeve ntofan acci ‐
de nt. Inthis case, thefront passeng erair bag
cann otper form itsintended protect ive func ‐
tion ,e.g. when aper son isseat edinthefront
passeng erseat.
That person could, forex am ple, com eint o
con tact with theve hicle interior ,especially if
th eper son issitt ing tooclose tothecoc kpit.
If th efront passeng erseat isoccupied,
alw aysensur eth at:
R The classificat ion oftheper son inthe
fr ont passeng ersea tis cor rect and the
fr ont passeng erair bag isenabl edor
dea ctivated inaccor dance withth eper‐
son inthefront passeng erseat. Occ
upant safety 47

PRE-S
AFE®
sy stem PRE-
SAFE®
(ant icipa tory occupa ntprotec‐
tion) PRE-
SAFE®
is ab leto detect cer tain critic aldriv‐
ing situat ionsandimplemen tpr e-em ptive meas‐
ur es toprotect theve hicle occupants.
PRE-S AFE®
can implement thefo llo wing meas‐
ur es indepe ndently of eac hot her :
R Tight ening theseat belts onthedr iver's seat
and front passeng erseat.
R Closing theside windo ws.
R Vehicl eswith memor yfuncti on:Moving
th efront passeng erseat toamor efa vo rable
seat position .
R Vehicl eswith multico ntour seat :Incr eas‐
ing theair pressur ein theseat sidebolsters
of theseat backres t.
R PRE-S AFE®
Sound: prov ided that themulti‐
media system isswitc hedon,gener ates a
br iefnoi sesigna lto stimulat eth einnat epr o‐
te ctiv emec hanism ofaper son's hearing. 000E
NO
TEDama gecau sed byobject sin the
fo ot we llor behin dth eseat The
automatic adjustmentof theseat posi‐
tion mayre sult indamag eto theseat and/or
th eobjec t. 0007
Stow object sin asuit able place. Re
versing thePRE- SAFE®
sy stem mea sures If
an acc iden tdid notocc ur,th epr e-em ptive
measur esthat we retake nar ere ve rsed.
Yo uwill need toper form certainse ttings your‐
self . 0007
Ifth eseat beltpre-t ension ingisno tre duced,
mo vetheseat backres tbac kslightl y.
The locking mechanism releases. Fu
nction ofPRE-S AFE®
PL US (anticipat ory
occupant protection plus) PRE-
SAFE®
PL US can detect cer tain im pact s,
par ticular lyan imm inentrear impact ,and take
pr e-em ptive measur estoprotect theve hicle occupants.
Thesemeasur escanno tnecessar ily
pr eve ntan imm inentimpact.
PR E-S AFE ®
PL US can implem entthefo llo wing
measur esindepe ndently of eac hot her :
R Tight ening theseat belts onthedr iver's seat
and front passeng erseat.
R Increasin gbr ak epr essur ewhen theve hicle
is statio nary.This brak eapplication iscan‐
celed automaticall ywhen theve hicle pulls
aw ay.
If an accident didnotoccur ,th epr e-em ptive
measur esthat we retake nar ere ve rsed.
Sy stem limita tions
The system will notinitiat ean yaction inthefo l‐
lo wing situat ions:
R when backingup
The system will notinitiat ean ybr aking applica‐
tion inthefo llo wing situat ions:
R whils tdr ivin g
or Occ
upant safety 49

The
child can notbe restra ined intheeve ntof
an acci dent, hea vybraki ng orasu dd en
ch ang eof dir ect ion. 0007
Alw aysre place child restra int systems
immediat elyth at have been damag edor
in vo lved inan acciden t. 0007
Have thesecur ingsystems forth ech ild
re stra int systems checkedat aqu alif ied
spec ialistwo rkshop beforeins talling a
ch ild restra int system again. Av
oiding direct sunli ght 000A
WARNIN GRisk ofburnswhen thech ild
seat isex posed todirect sunlight
If th ech ild restra int system isex posed to
dir ect sunlight orheat, partscould heatup.
Childr encould sufferbur nsfrom these parts,
par ticular lyon metallic partsof thech ild
re stra int system. 0007
Alw aysmak esur eth at thech ild
re stra int system isno tex posed to
dir ect sunlight . 0007
Protect itwit hablank et,fo rex am ple. 0007
Ifth ech ild restra int system has been
ex posed todirect sunlight ,allo witto
cool beforesecu ring ach ild intoit. 0007
Neverlea vechildr enunat tende din the
ve hicle. Obser
vewhen stopping orpar king 000A
WARNIN GRisk ofacci dent andinjury
due tochildr enand animals leftunat ten‐
de din theve hicle
If yo ulea vechildr enand animals unattende d
in theve hicle, they ma ybe ableto setth e
ve hicle inmo tion, forex am ple by:
R Releasing thepar king brak e.
R Shif ting theaut omatic transmission out
of par kposition 005D.
R Startin gth eengine.
In addition, they ma yoper ateve hicle equip‐
ment andbecome trapped. 0007
Neverlea vechildr enand animals unat‐
te nde din theve hicle. 0007
When leaving theve hicle, alwaysta ke
th eSmar tKey wit hyo uand lockth e
ve hicle. 000A
WARNIN GRisk offata linj urydue to
ex posur eto extreme heat or col din the
ve hicle
If people –par ticular lych ildr en–ar e
ex posed toextreme temp eratur esover an
ex tende dpe riod oftime, ther eis arisk of
ser ious oreve nfa ta linj ury. 0007
Neverlea veanyone –pa rticular lych il‐
dr en –unat tende din theve hicle. 0007
Neverlea veanim alsintheve hicle unat‐
te nde d. Occu
pant safety 53

If
th eve hicle isno topened within appr oximat ely
40 seco ndsafte runloc king,itloc ksagain. Anti-
th eftpr otect ion isarmed again.
Do notke ep theSmar tKey toge ther wit helec‐
tr onic devices orme talobje cts. This canaffect
th eSmar tKey 's functionality .
0009 Ifbatt erych ecklam p2 does notlight up
af te rpr essing the0036 or0037 button,the
batt eryis disc harged.
Re place theSmar tKey batt ery(0013 page64 ). Ac
tiv atin g/deac tivatin gthe acoustic lock ing
ve rificat ion signa l Mult
imed iasystem:
0018 Vehicle 0019
î Vehicle Setting s
0019 Aco ustic Lock 0007
Activate0073 ordeacti vate 0053 thefunc tion. Ac
tiv atin g/deac tivatin gthe pani calar m Re
quirement s:
R The ignit ionisswitc hedoff 0009
The panic alarmfunc tion isonl yav ailable in
cer tain coun tries. 0007
Toactiv ate: press butt on1 forapp rox‐
ima tely one second.
A visual andaudibl ealar mistrigg ered. 0007
Todeac tivate: briefly pr ess button1 again.
or 0007
Press thest ar t/ stop butt ononthecoc kpit
(t he Smar tKey isinsid eth eve hicle). Changing
theunloc kingsettings Po
ssible unlockingfunctions oftheSmar tKey :
R Cen tralunlo cking R
Unloc kin gth edr iver's door andfuel filler flap 0007
Toswitc hbe tw een settings: press the
0036 and0037 buttonssimul taneousl yfo r
appr oximat elysix seco ndsuntilth ebatt ery
ch ecklam pflashes twice.
If th eunloc kingfunction forth edr iver's door
and fuel filler flap has been selected:
R Pressing the0036 buttonasecon dtime cen‐
tra lly unloc kstheve hicle
R Vehicl eswith KEYLESS-GO :If yo uto uc h
th einner surface ofthedoor handle onthe
dr iver's door ,onl yth edr iver's door andfuel
fi ller flap areunlo cked. Deactiv
atingtheSm artK ey functio ns If
yo udo notuse theve hicle oraSmar tKey for
an extende dpe riod oftime, youcan reduce the
ener gycon sum ption ofthere spectiv eSmar t‐
Ke y.To do so, deactiv ateth eSmar tKey func‐
tions. Openi
ngand closi ng 63

0007
Todeac tivate: press the0037 buttononthe
Smar tKey twi ce inqu ick succ ession .
The batterych ecklam pof theSmar tKey
fl ashes twicebr ief lyand light sup once. 0007
Toactiv ate: press anybutt onontheSmar t‐
Ke y.
0009 When theve hicle isstar tedwit hth eSmar t‐
Ke yin thestow agecom partment ofthecen‐
te rconsole, theSmar tKey functions are
au tomatical lyact ivat ed (0013 page12 9). Re
mo ving /ins ertin gthe eme rgency key 0007
Toremo ve:pr ess release button1.
Em erge ncy key2 ispush edout slightly. 0007
Pull outemer gency key2 untilit en gage sin
th eint ermediat eposition .
0009 Youcan usetheint ermediat eposition of
emer gency key2 toatt achth eSmar tKey to
a ke yring. 0007
Press release button1 again and fully
re mo veemer gency key2. 0007
Toinser t:press release button1. 0007
Insertemer gency key2 totheint ermediat e
position orfull yuntil iteng ages. Re
plac ingthe Smar tKey batt ery 000A
DANG ER Serious damag eto healt h
caused byswallo wing batteries
Batt eries cont aintoxic and corrosiv esub‐
st anc es.Swallo wing batteries ma ycause
ser ious damag eto healt h.
Ther eis arisk offata linj ury. 0007
Keep batt eries out ofthere ac hof chil‐
dr en. 0007
Ifbatt eries aresw allo wed,seek medical
att ent ion immediat ely. 000F
ENVIR
ONMEN TALNO TEEnvironme ntal
da ma gecau sed byimproper disposal of
batt eries Bat
teries con tain polluta nts. Itis
illeg alto dispose ofthem withth ehousehold
ru bbish. 0007
Dispose
ofbatt eries inan
en vironmen tally re sponsible manner.
Ta ke disc hargedbatt eries toaqu alif ied
spec ialistwo rkshop ortoacol lection
poin tfo rused batteries. 64
Opening andclosing

000A
WARNIN GRisk ofbeco ming trap ped
des pite ther ebeing reve rsing protect ion
on theside windo w
The reve rsing func tion does notre act :
R Tosof t,light andthin obje cts, e.g. fing ers
R Dur ing rese ttin g
This means that there ve rsefunc tion cann ot
pr ev ent someon efrom becomin gtrapped in
th ese situation s. 0007
When closing, makesur eth at no body
par tsarein theclosing area. 0007
Ifsomeon ebecomes trapped, press the
0062 buttontoopen theside windo w
ag ain. Con
venience opening (ventilating theve hicl e
bef orest ar ting ajour ney) 000A
WARNIN GRisk ofentr apment when
ope ning asid ewi ndo w
Whe nope ning asid ewi ndo w,par tsof the
body could bedraw nin or become trap pe d
be twee nth eside windo wand windo wframe. 0007
When opening ,mak esur eth at nobody
is touc hin gth eside windo w. 0007
Release thebutt onimmediat elyif
somebody becomestrapped. 000A
WARNIN GRisk ofbeco ming trap ped
whe nope ning/cl osing thesof tto p.
When openin gor closin gth esof tto p, ther e
is arisk that par tsof thebody could become
tr apped bymo ving partssuc has thero of
mec hanism, thetrunk lid,ortheside win‐
do ws . 0007
When opening orclosing, makesur e
th at no body partsarein thevicinit yof
mo ving componen ts. 0007
Release thebutt onifsomebody
becomes trapped. 0007
Press and hold the0036 buttononthe
Smar tKey .
The follo wing functionsar eper form ed:
R The vehicle isunloc ked.
R The side windo wsareopen edwhen the
tr unk partition isopen .
R The softto pis opened whenthetrunk
par tition isclosed.
R The seat ventil ation ofthedr iver's seat is
switc hedon. 0007
Tointerru pt con venience opening: release
th e0036 button. Openin
gand closing 75