2021 MERCEDES-BENZ C-CLASS CABRIOLET sensor

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

#
Ades tination hasbeen receiv edwit hpic‐
tu re informa tion: select Start Route Guid-
ance .
Ro uteguidan cestar ts. Ro
uteguidanc ewith current traf fic re por ts Tr
af fic inf orma tion overview
Tr af fic re por tsarere cei vedusing LiveTr af fic
Inf ormation andareused forro uteguidan ce.
This serviceis una vailable insome countries.
Ther ema ybe differe nces betwee nth etraf fic
re por tsrecei vedand theactual road and traffic
condi tions.
Im por tant informa tionon LiveTr af fic Inf orma‐
tion:
R Current traffic repor tsarere cei vedvia the
Int erne tconnection.
R The traf fic situ ation isup datedat shor t,re gu‐
lar interva ls.
R The subsc ript ion informatio nsho wsthest a‐
tus (/ page25 9). In
fo rm atio non theve hicle's position isregular ly
sent toMer cedes-Ben zAG .The data isimmed i‐
at elyre nde redanon ymous byMer cedes-Ben zAG
and forw arded tothetra ffic dat apr ov ider .Usin g
th is dat a,traf fic re por tsreleva nt totheve hicle's
position aresent totheve hicle. Thevehicle acts
as asensor forth eflow oftraf fic and helpsto
im prove thequ alit yof thetra ffic repor ts.
If yo udo notwish totrans mityo ur vehicle posi‐
tion, youcan have this ser vice deact ivat ed atan
aut hor ized Mercedes -Benz Cent er.
Displa yingsubscr iption informa tion
Re quirement s:
R The vehicle iseq uipped withLiv eTr af fic
Inf ormation.
Multime diasystem:
4 Navigation 5
Z Option s
The subscr iption expir ation dateis aut omatic ally
displa yed:
R one mont hbef oreth eex pir ation date.
R one week bef oreth eex pir ation date.
R ontheex pir ation date. #
Todispl aymanu ally:select LiveTraffic Sub-
scription Info.
Depending onthest atus ,on eof thefo llo wing
mess ages appear s:
R theper iod ofvalidity forth esubscr iption
is displa yed.
R thesubscr iption hasexpir ed.
% The subscr iption canbeextende d:
R Atan aut hor izedMer cedes-Ben zCent er
R Viaan MB Info cal lto theMer cedes- Benz
Cus tomer Assis tanceCenter
Di spla yingthe traf fic ma p
Re quirement s:
R ForLiv eTr af fic Inf ormati on:theve hicle is
eq uipped withacommunication modulefea‐
tur ing anact ivat ed, integrat edSIM car d.
R When theve hicle isstar ted, thecomm unica‐
tion module automatic allyestablishes an
Int erne tcon nection .Tr af fic inf ormati onis
mad eav ailable shortly af te rw ards. Mult
imed iasystem 259

minut
esafte rclea ning beforepar king it.The
br ak ediscs andbrak epa dswarm upand dry
out .
Wi ndo ws
R Clean thewindo wsinside andouts idewitha
dam pclo thand withacle anin gag ent recom‐
mend edforMer cedes-Benz.
R Donotuse dryclo thsor abr asiv eor sol vent-
ba sed cleani ng agents tocle an theinside of
windo ws.
Wi per blades
R Movethewiper arms intoth ere placemen t
position (/page11 4).
R With thewiper arms folded out,clean the
wiper blades withadam pclo th.
R Donotcle an thewiper blades tooof ten.
Ex terior light ing
R Clean thelenses withawe tsp ong eand mild
cle ani ng agent, e.g.car shampoo.
R Onlyuse cleaning agents orcleaning cloths
th at aresuit able forpla stic lens es. Sensor
s
R Clean thesensor sin thefront and rear
bum perswit hasof tclo thand carsham poo
(/ page15 0).
R Whenusing apo we rwa sher ,maint ainamini‐
mum distance of11.8 in(30 cm).
Re ar vie wcamer aand surround viewcamer a
R Open thecamer aco verwit hth emultimedia
sy stem (/ page18 9).
R Usecle an waterand asof tclo thtocle an the
came ralens .
R Donotuse apo we rwa sher .
Ta ilpip es
R Clean withaclean ingagent recomme nded
fo rMer cedes-Benz, especiallyin thewint er
and afte rwa shing theve hicle.
R Donotuse acidic cleaning agents. No
teson car eof theint erior &
WARNIN GRisk ofinju ryfrom plastic
par tsbreakin gof faf te rth euse ofsol‐
ve nt-ba sedcarepr od ucts
Ca reand cleanin gpr oduc tscon tainin gsol‐
ve nts can causesurfaces inthecoc kpit to
become porous. When theairbags are
deplo yed, plas ticpar tsma ybr eak away. #
Donotus ean ycar eor cle ani ng prod ‐
ucts containing solvents tocle an the
coc kpit. &
WARNIN GRisk ofinju ryor deat hfrom
bleac hedseat belts
Bleac hingordyeing seat belts canseverely
we aken them.
This can, forex am ple, caus eseat beltsto
te ar or failin an acc ident . #
Neverblea chordyeseat belts. To
avo iddamag eto theve hicle, observethefo l‐
lo wing noteson cleaning andcare: 330
Maintenance andcare

pr
essur ete lltale when oneormor eof your
tir es issign ifican tly unde rinf late d. Ac cor d‐
ing ly,if th elow tirepr essur ete lltale illumi‐
nat es, yousho uld stop and checkyo ur tires
as soo nas poss ible, andinflateth em tothe
pr oper pressur e.Driving onasignif icantly
under inflated tirecauses thetir eto ove rheat
and canlead totirefa ilur e.Un der inflation
also reduces fuelefficie ncy and tiretrea d
li fe ,and mayaf fect theve hicle's handling
and stopping ability.Please note that the
TPMS isno ta subs titutefo rpr oper tiremain‐
te nance ,and itis thedr iver's responsibili ty
to maint aincorrect tirepr ess ure, eve nif
und erinf latio nha sno tre ac hed theleve lto
tr ig ge rill umina tionoftheTPMS low tirepr es‐
sur ete lltale.
Yo ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atewhen
th esy stem isno toper ating proper ly.The
TPMS malfunct ionindicat oriscombin edwith
th elow tirepr essur ete lltale. When thesy s‐
te m detects amal functi on,theindicat or
lam pwill flash forapp roxima tely amin ute and
then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gas themalfunct ion
ex ists.
When themalfunct ionindicat orisillumina‐
te d, thesy stem mayno tbe able todetect or
sig nal low tirepr ess ureas intende d.TPM S
mal functi onsmayoccu rfo ra va riet yof rea‐
son s,inc ludin gth eins tallation ofinc om pati‐
ble replacemen tor alternat etir es orwheels
on theve hicle that prev ent theTPMS from
func tioningproper ly.
Alw aysch eckth eTPMS malfunct iontelltale
af te rre placing oneormor etir es orwheels
on your vehicle toensur eth at there place‐
ment oralternat etir es and wheels allowthe
TPMS tocontinu eto function proper ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es installed totheve hicle
by means ofatir epr essu resensor .
The tirepr essur eand thetir ete mp eratur e
appear intheon- boar dcom puter(/ page360). If
th er eis asubs tantia lpr ess ureloss orifth e
tir ete mp eratur eis exc essiv e,youwill bewarned
in thefo llo wing ways:
R Viadispla ymes sages(/ page43 9).
R Viath e0077 warning lam pin theins trument
clus ter(/ page460)
The tirepr essu remonit oring system isonl yan
aid. Itis thedr iver's responsibili tyto setth etir e
pr essur eto there comme ndedcoldtirepr ess ure
su itab leforth eoper ating situation .
In mos tcases, thetir epr essur emonit oring sys‐
te m wil lau tomatical lyupdat eth ene wrefere nce
va lues afte ryo uha ve chang edthetir epr essur e.
Yo ucan ,ho we ver,also updat eth ere fere nce val‐
ues byrestar tin gth etir epr essur emonit oring
sy stem manually (/page360).
Sy stem limit s
The system maybe impair edorma yno tfunc tion
par ticular lyin thefo llo wing situat ions:
R The tirepr essur ehas been setinc orrectly
R Sud den press urelos scau sed byafo re ign
obje ctpene tratin gth etir e, forex am ple Whee
lsand tires 359

of
skidding andhydroplaning onwetro ads is
inc reased.
In addit ion,th etir egr ip isgreatl yre duced at
a low outside temp eratur eand tireru nning
te mp eratur e. #
Switc hon theES P®
and adap tyo ur
dr ivin gst yle accor dingly. #
Use 004D M+Stires atoutside temp er‐
atur esofless than 50 °F(10 °C) . #
Onlyuse thetir es forth eir intended pur‐
pose. Obser
vethefo llo wing when selecting,ins talling
and replacing tires:
R Further mor e,theuse ofcer tain tiretypes in
cer tain regions andareas ofoper ation can
be highl ybenef icial.
R Onlyuse tires and wheels ofthesame type
(summer tires, wint ertires, MOEx tende d
tir es) and thesame make.
R Onlyins tallwheels ofthesame sizeonone
axle (leftand right). It
is onl yper missible toins talla dif fere nt
wh eelsi ze intheeve ntofaflat tirein order
to drive to thespecialis two rkshop.
R Vehicl eswith atir epr ess uremonit oring
sy stem: Allinstalled wheels mustbe equip‐
ped withfunc tioningsensorsfo rth etir e
pr essur emonit oring system.
R Attemp eratur esbelo w45°F (7°C) usewin‐
te rtir es orall-seaso ntir es mar ked004D M+S
fo rall whee ls.
Wi nter tires prov ide thebes tpossible grip in
wintr yro ad con dition s.
R ForM+S tires, only usetires wit hth esame
tr ead.
R Obser vethemaximum permissible speedfor
th eM+S tires installed.
If th etir e's maximum speedisbelo wthat of
th eve hicle, this mus tbe indic ated byan
appr opriatelabel inthedr iver's field of
vision.
R Break inne wtires atmoder atespeeds for
th efirs t60 miles(1 00 km) . R
Replace thetir es afte rsix yearsat thelat est,
re ga rdless ofwe ar.
R Wh enreplac ingwith tires that donotfe a‐
tur eru n-f lat charact eristics :ve hicles with
MOExt ended tires areno teq uipped witha
TIREFIT kitatthefa ct or y. Eq uip th eve hicle
wit haTIREFIT kitafte rre placing withtir es
th at do notfe atur eru n-f latch aract eristic s,
e.g .wint ertires.
Fo rmor einf ormation onwhee lsand tires, con‐
ta ct aqu alif ied spec ialistwo rkshop.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page355)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page36 2)
R Tire size designation, load-bearing cap acity,
spe edrating andload index(/ pag e369)
R Tire pressur eta ble (/ page35 7)
R Noteson theemer gency sparewheel
(/ page38 3) 37
6
Wheels andtires

Light
s Displa
ymess ages
Possible causes/conseq uencesand0050 0050
Solutions
: Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisdef ectiv e. #
Drive on car efully . #
Visit aqu alif ied spec ialistwo rkshop immediat ely.
% LED lightsour ces: thedispla ymessag efo rth ecor responding lightappea rsonl ywhen allthelight- emitt ing
diodes inthelight arefa ulty .
: Malf unctionSee Oper a-
to r’s Man ual *T
heexterior lighting ismalfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop.
: Automatic HeadlampMode
Inoperative *T
helight sensor ismalfunctionin g. #
Consult aqu alif ied spec ialistwo rkshop. 406
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Clean thewindshield.
Blind SpotAssist Current ly
Unavailable SeeOperator 's
Manual *B
lind SpotAss istis temp orarily una vailable.
The system limits have been reac hed (/page17 7).
On ce thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. #
Drive on .
or #
Ifth edispla ymessag edoes notdisappear ,st op theve hicle inaccor dance withth etra ffic con dition sand restar t
th eengine. #
Ifneces sary,cle an there ar bum per.If th ebum perisespeciall ydir ty,th esensor sin thebum permaybe mal‐
func tioning.
Blind SpotAssist Inopera-
tive *B
lind SpotAss istis malfun ctionin g. #
Consult aqu alif ied spec ialistwo rkshop.
Act ive Blind SpotAssist
Currently UnavailableSee
Operator's Manual *A
ctiv eBli nd Spo tAssi stistemp orarily una vailable.
The system limits have been reac hed (/page17 7).
On ce thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. #
Drive on .
or Dis
playmes sagesand warning/ indic ator lam ps 42
7

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Act ive Brake Assist Func-
tions Limited SeeOpera-
tor's Manual *
Ve hicl eswith theDr iving Assistance Packag e:Ac tiveBr ak eAssi stwit hcr oss- traf fic functi on,Evasi ve Steer ing
Assis tor PRE‑S AFE®
PL US arete mp orarily una vailable oronl ypar tiall yav ailable.
Ve hicl eswithout theDr iving Assistance Packag e:Ac tiveBr ak eAssi stistemp orarily una vailable oronl ypar tiall y
av ailable. #
Con sult aqu alif ied spec ialistwo rkshop.
Rada rSensors DirtySee
Operator's Manual *T
heradar sensor system ismalfunct ioning.Possible causes:
R Dirton thesensor s
R Hea vyrain or sno w
R Extende dcou ntrydr ivi ng without other traf fic, e.g. inthedeser t
Dr iving systems anddriving safetysy stems maybe malfunct ioningortemp orarily una vailable.
Onc eth ecause ofthepr oblem isno long erpresent ,th edr iving systems anddriving safetysy stems willbeavailable
ag ain.
If th edispla ymessag edoes notdisappear : #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Clean allsen sors(/ page329) . #
Restar tth eengine. 436
Displa ymessag esand warning/ indic ator lam ps