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

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

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
003D St op Vehicle LeaveEngine
Running *T
he12 Vbatt erych arge leve lis toolow. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions.Do notcontinu edr ivi ng und eranycir‐
cums tances. #
Lea vetheengine running . #
Ifth edispla ygoes out:yo ucan drive on . #
Ifth edispla ymessag edoes notdisappear :con sult aqu alif ied spec ialistwo rkshop. Ti
re pres sur emoni tor Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Tire Press. MonitorCur-
rent lyUnavailable *T
her eis int erfere nce from apo we rful radio signal sourceAs are sult, nosignals from thetir epr essur esensor sar e
being recei ved. The tirepr essur emonit oring system istemp orarily una vailable.
The tirepr essur emon itor ing system will restar taut omat icallyas soon asthecause hasbeen rectif ied. #
Drive on.
Tir ePre ss. Moni torInope ra-
tive *T
hetirepr essur emonit oring system ismalfunct ioning. &
WARNIN GThe reisarisk ofan accident ifth etir epr essur emonit oring system ismalfunct ioning
The tirepr essur emonit oring system cann otissue awa rning ifth er eis pressur eloss inone ormor eof thetir es.
Ti re swit hinsuf ficie nttirepr ess urema yim pa irth edr iving charact eristic sas wellas steer ing and braking. Displa
ymessag esand warning/ indic ator lam ps 439

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Have thetir epr essur emonit oring system checkedat aqu alif ied spec ialistwo rkshop. Tire
Pressure MonitorInop-
erative NoWheel Sensors *T
hewheels installed donotha ve suit able tirepr essur esensor s.The tirepr essur emonit oring system isdeactiv ated. #
Installwheels withsuit able tirepr essur esen sors.
0077 Wheel Sensor(s )Missin g *T
her eis no signal from thetir epr essur esensor ofone ormor ewheels. Nopressur eva lue isdispla yedfo rth eaf fec‐
te dtir e. #
Have thefa ulty tirepr ess uresen sor replaced ataqu alif ied spec ialistwo rkshop.
0077 Check Tires *T
hetirepr essur ein one ormor etir es has dropped significantl y.
The wheel position isdispla yed. Awa rning tone willal so sou nd. &
WARNIN GRisk ofan acci dent dueto insuf ficie nttirepr ess ure
R The tires can burst.
R The tires can wearexc essiv elyand/or unevenly.
R The driving charact eristic sas wellas thesteer ing and braking maybe greatl yim pair ed.
Yo uco uld then lose control of theve hicle. #
Obser vethere comme ndedtirepr ess ures. #
Adjus tth etir epr essur eif neces sary. 44
0
Dis play messa gesand warning/ indic ator lam ps

Engine
Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant warning lam p *T
he redcoolant warning lam pis lit while theengine isrunning .
Po ssible causes:
R The temp eratur esensor ismalfunct ioning
R The coolant leve lis toolow
R The airsuppl yto thera diat orisobs truct ed
R The radiat orfanis faulty
R The coolan tpum pis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceeded themaximum permissible temp eratur e. &
WARNIN GRisk ofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edorwhen ther eis afire intheengine compartmen t,th e
fo llo wing situat ionsmayocc ur:
R Youco uld come intoco ntact withho tga ses.
R Youco uld come intoco ntact withot her hot,escaping operating fluids. #
Beforeopen ingthehood, allowtheove rheat edengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. Displa
ymessag esand warning/ indic ator lam ps 45
1

Decl
ining...... ............ .............................273
Endi ngacal l............... ........................ ...273
Incoming callduring anexistin gcall ...... 274
Making.. ............................................. ... 273
Mer cedes me........................................2 83
Call sup thesound menu
Bur mes ter®
sur round soun dsy stem.. ....3 14
Cam era
see 360° Camer a
see Rear vie wcam era
Car key
see Smar tKey
Car wash
see Care
Car wash (car e)......................................... 323
Car e
Air -water duct... .....................................3 23
Au tomatic carwash... ........................ ....3 23
Ca rpet<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 330
Decor ative foil.. .....................................3 26
Displ ay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 330
Ext eriorlighti ng<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 329
Fo lding windscreen. ........................ .....3 29
Head liner........ .......................................330 Matt
efinis h.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 325
Pa int wo rk<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 325
Pl as tic tr<004C005000110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 330
Po we rwa sher. ................................. ...... 325
Re alwo od/tr imelements .................. ... 330
Re ar vie wcam era.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 329
Sea tbel <0057001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 330
Sea tco ver..... ................................... ..... 330
Sensor s.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 329
Sof tto p.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 327
St eer ing wheel. ................................. ....3 30
Sur round viewcam era..................... .....3 29
Ta ilpipes ............................................ .... 329
Wa shing byhand. ..................................3 25
Whee ls/rims...... ................................... 329
Wi nd deflect or.. .....................................3 27
Wi nd scree<0051001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> ................328
Wi ndo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 329
Wi per blades .........................................3 29
Car gotie-do wnrings. ................................ 103
Car pet(Car e).............................................3 30
Chang eof addr ess....... ...............................23
Chang eof ow ner ship ..................................2 3 Cha
nging awheel
Pr epar ation............................................ 378
Ra ising theve hicle ................................ 379
Cha nging awheel
see Emerge ncy sparewheel
Chan ginggears
Manu ally....... ......................................... 139
Cha nging hubcap s.. .................................. 378
Cha racter ent ry
Using thecon troller.... ........................... 228
Char ging
Batt ery(v ehicle) .................................... 344
Child seat
At tach ing (notes)... ..................................5 5
Basi cins tructi ons<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> ...............51
Fr ont- passeng erseat (notes)... ................6 0
LA TC H-type (ISOFIX )(ins talling). .............5 6
No teson risk sand dang ers... .................. 52
Secur ingonthefront passeng erseat... ...61
Secu ring on there ar seat. .......................5 9
To pTe ther.. ............................................. 58
Childr en
Av oiding dangersin theve hicle.... ........... 52 Inde
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7

0049
Turn On theIgnit iontoRelease
th ePa rking Brak e..................................4 21
0072 Vehicle Ready toDrive Swi tch
th eIgnit ionOffBef oreEx iting ............... 409
00CC Vehicle Rising Please Wait............ 431
00CC Vehicle Rising ...............................4 31
0077 Warning Tire Malfunction. .............4 41
0077 Wheel Sensor(s) Missing .............. 440
0059 While statio nary,appl yth e
br ak es bef oreoper ating thesof tto p.... .404
Ac tiveBli nd Spo tAssi stCur rently
Un available SeeOper ator' sMan ual.......4 27
Ac tiveBli nd Spo tAssi stInoper ative..... .4 28
Ac tiveBr ak eAssi stFunctio nsCur‐
re ntl yLim ited See Operator's Manua l...435
Ac tiveBr ak eAssi stFunctio nsLim i‐
te dSee Oper ator's Manual. .................. 436
Ac tiveDis tance AssistCur rently
Un available SeeOper ator' sMan ual.......4 24
Ac tiveDis tance AssistInoper ative..... ... 424 Ac
tiveDis tance AssistNo wAv ailable.. ..424
Ac tiveLa ne Keeping AssistCamer a
Vi ew Restrict ed See Operator's Man‐
ua l... ...... ................................................ 428
Ac tiveLa ne Keeping AssistCur rentl y
Un available SeeOper ator' sMan ual...... 428
Ac tiveLa ne Keeping AssistInopera‐
tiv e... ..................................................... 428
Ac tivePa rking Assistand
PA RK TRONI CInoper ative See Opera‐
to r's Manua l......... ................................. 432
Ac tivePa rking AssistManeuv ering
Ass ista nce Restrict ed See Opera‐
to r's Manua l......... ................................. 431
Ac tiveSt eer ing Assis tCur rentl y
Un available DuetoMultiple Emer‐
ge ncy Stops... ........................................4 25
Ac tiveSt eer ing Assis tCur rentl y
Un available SeeOper ator' sMan ual...... 425
Ac tiveSt eer ing Assis tInoperativ e... ...... 425 Ad
aptiveHig hbeam Assis tCamer a
Vi ew Restrict ed See Operato r's Man‐
ua l... ...... ................................................ 408
Ad aptiveHig hbeam Assis tCur rently
Un available SeeOper ator' sMan ual...... 408
Ad aptiveHig hbeam Assis tIn oper ative.. 408
App lyBrak eto Shif tfr om 'P'<0011001100110011001100110011001100110011001100110011001100110011
00110011> 414
App lyBrak eto Shif tto 'R' ......................4 15
Au xiliary Batt eryMal functi on........ .........416
Begi nning Emergency Stop .................... 425
Blind SpotAssis tCur rentl yUna vaila‐
ble See Opera tor's Manua l..... ............... 427
Blind SpotAssis tInoper ative..... ............427
Chec kTire Pressur eSoon. .................... 443
Chec kTire Pressur eThen Restar t
Ru nFla tIndi cator....... <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ...443
Cr uise Control Inoper ative.. .................. 423
Cr uise Control Off.. ...............................4 23
Decr easeSpeed ....................................442 47
2
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Dr
iver' sDoo rOp en &Trans miss ion
No tin PRisk ofVehicle Rolling Away..... 415
Fr ont Passeng erAirbag Disabled See
Oper ator's Manual.... ............................4 00
Fr ont Passeng erAirbag Enabled See
Oper ator's Manual.... ............................4 00
Hazard Warning Flashe rsMalfunc‐
tioning. .................................................. 409
Mer cedes meconn ectServices Limi‐
te dSee Oper ator's Manual. ...................4 37
N Pe rm anen tly Ac tiveRi sk ofRo lling
Aw ay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 415
Onl yShif tto 'P' when Vehicle isSta‐
tio nar y...................................................4 14
Place theKe yin theMar kedSpace
See Oper ator's Manual. .........................4 03
PRE-S AFEInoper ativeSee Oper a‐
to r's Manua l......... ................................. 401
Ra dar SensorsDir tySee Oper ator's
Manual. .................................................4 36 Re
versing NotPo ssible Service
Re quired ................................................ 416
Ru nFla tIndi catorInop erati ve............... 444
Ser vice Required Do NotShif tGear s
Vi sit Dealer.... ........................................4 15
St op Vehicle LeaveEngi neRunning
Wa itTrans miss ionCoolin g.. ...................4 16
Ti re Press. Monit orCur rently
Un available ............................................ 439
Ti re Press. Monit orInopera tive... ..........4 39
Ti re Pressur eMonit orInopera tiveNo
Wheel Sensors.. .................................... 440
Ti re sOv erheat ed................................... 442
To Dese lect Por N, Dep ress Brak e
and StartEn gin e.. .................................. 415
To switc hengine off,pr ess and hold
St art/ Stop butt onforat lea st3
secs. orpress 3times...... ......................4 12
Tr af fic Sign AssistCamer aVi ew
Re strict ed See Operator's Manua l......... 426 Tr
af fic Sign AssistCur rently Unavail‐
able SeeOperat or'sMan ual.................. 426
Tr af fic Sign AssistInoper ative.... ........... 426
Tr ans miss ionMalfun ction Stop..... ......... 416
Disp layon thewindsh ield
see Head- upDis play
Dis tance control
see ActiveDis tance AssistDIS TRONI C
DI ST RO NIC
see ActiveDis tance AssistDIS TRONI C
Do or
Loc king (emerg ency key). ........................ 69
Ope ning (from inside ).............................. 67
Un loc kin g(emer gency key). .................... 69
Un loc kin g(fr om insid e)............................ 67
Door controlpan el....................................... 16
DO T,Tire Iden tificat ionNumbe r(TI N)..... 367
Dr aw bar
see Tow- bar system
Dr inking anddriving... ...............................1 29
Dr ive Awa yAssis t.... .................................. 198 Inde
x47
3

Dr
ive Awa yAssis t
see Protect ion agains tcollision
Dr ive position
Inser ting.. ..............................................1 38
Dr ive pr og ram dis pla y........... .................... 135
Dr ive pr og rams
se eDY NA MIC SELE CT
Dr iver's seat
see Seat
Dr iving safetysy stem
AB S(An ti-loc kBr akin gSy stem) .............1 52
Ac tiveBr ak eAssi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 170
BA S(Br akeAssi stSystem) ............... ..... 152
Cameras. .............. ............................ .....1 50
EBD (electr onic brak efo rc edis tribu‐
tion ).......................................................1 54
ESP ®
Cr oss wind Assi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 153
Ov ervie w.... ....................................... ..... 151
Ra dar and ultrasonic sensors................ 150
Re sponsibili ty........................................ 150
ST EER CONTR OL............... ....................154
Dr ivin gsy stem
DY NA MIC BODY CONTR OL.... ................ 182 Dr
ivin gsy stem
see 360° Camer a
see ActiveBli nd Spo tAssi st
see ActiveDis tance AssistDIS TRONI C
see ActiveEmerg encyStop Assis t
see ActiveLa ne Chang eAssi st
see ActiveLa ne Keeping Assist
see ActivePa rking Assist
see ActiveSpe edLimi tAssi st
see ActiveSt eer ing Assis t
see AIRMA TIC
see ATTENTION ASSIST
see Blind SpotAssis t
see Cruise control
see Driving safetysy stem
see HOLD function
see Parking AssistPA RK TRONI C
see Rear vie wcam era
see Traf fic Sign Assist
Dr ivin gtips
Dr ink ing and drivin g.............................. 129
Gene raldr ivin gtips .......................... .....1 29
No teson breaking-in ane wvehicle.... ...128
Op timized acceleration.......................... 128 Dr
ow siness detection
see ATTENTION ASSIST
DY NA MIC BODY CONT ROL
Sus pens io<0051001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 182
Dyna micha nd ling cont rolsy stem
see ESP®
(Ele ctro nic Stabilit yPr og ram)
DY NA MIC SELECT
Conf iguring drive pr ogr am I.<0011001100110011001100110011001100110011001100110011001100110011
00110011> 136
Dis play ing engin edat a..........................1 36
Displ aying vehicle data.<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 136
Dr ive pr og ram disp lay. <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 135
Dr ive pr og rams...... ................................134
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>134
Oper ating (DYN AMIC SELECTswitc h)....1 35
Selecti ngthedr ive pr ogr am.. ................1 35
Sho wing operationfe edbac k.................1 36 E
E1 0......... ....................................................390
Easy entryfe atur e
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 96
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 97
Easy exitfeatur e
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 9647
4
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ESP
®
(Electr onicStabil ityProg ram)
Ac tivati ng/d eactiv ating........... ..............154
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 152
Ext erior light ing
see Ligh ts
Ext erior light ing(car e).............................. 329
Ext erior mir rors
Anti-g lare mode (automatic)......... .......... 117
Au tomatic mirrorfo lding function... .......1 19
Fo lding in/out. .......................................1 16
Oper ating thememor yfunc tion.. ............ 98
Pa rking posit ion..................................... 118
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 116 F
Fa tig ue detection
see ATTENTION ASSIST
Fa vo rite s
Ad ding. ............................................ ...... 225
Calling up.............................................. 225
Dele ting.................................................2 25
Mo ving........... ................................... .... 225
Ov ervie w.... ....... ................................... .224
Re nam <004C0051004A0011001100110011001100110011001100110011001100110011
0011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .225 Fi
rs t-aid kit(sof tsi ded) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> .....334
Fl at tire
Ch ang ingawh ee<004F001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> ....378
MOExt ended tires...... ............................3 35
No tes... .................................................3 34
TIREFIT kit............. ................................ 336
Flat towing
see Tow- bar system
Floor mats.................................................. 106
Fo ilco vering
Ra dar and ultrasonic sensors................ 150
Fo lding windscreen
Car e................................................. .....3 29
Ins talling. .......................................... .......7 6
Re mo ving... ........................................ ......7 6
Fr ee sof tware..............................................3 4
Fr eq uencies
Tw o-w ayradio .................................. .....3 86
Fr ont airbag. ................................................ 42
Fr ont passeng erseat
see Seat Fu
el
Ad ditiv es................................................ 391
E1 0.... .................................................... 390
Fu elreser ve<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 392
Ga sol <004C005100480011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 390
Qua lity (gas oline ).<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 390
Re fuel ing...... .......................................... 141
Sul fur cont ent<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 390
Ta nk cont ent<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ................392
Fu nction seat
see Door controlpanel
Fu ses
Bef orere placing afuse .......................... 351
Dashboar dfuse box.............................. 353
Fu se assignment diagram...................... 351
Fu se boxin theengine compartmen t....3 52
Fu se boxin thefront -passen gerfo ot ‐
we ll....................................................... 353
Fu se boxin thetrunk..... ....................... 353
No tes... .................................................. 351
Fu ses
see Fuses 47
6
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