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

Ac
tiv atin g/deac tivatin gthe acoustic lock ing
ve rificat ion signa l Mult
imed iasystem:
4 Vehicle 5
î Vehicle Setting s
5 Aco ustic Lock #
Activate0073 ordeacti vate 0053 thefunc tion. Ac
tiv atin g/deac tivatin gthe pani calar m Re
quirement s:
R The ignit ionisswitc hedoff. #
Toactiv ate: press butt on1 forapp rox‐
ima tely one second.
A visual andaudibl ealar mistrigg ered. #
Todeac tivate: briefly pr ess button1 again.
or #
Press thest ar t/ stop butt ononthecoc kpit,
wit hth eSmar tKey insid 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 #
Toswitc hbe tw een settings: press the
Ü andß buttonssimul taneousl yfo r
appr oximat elysix seco ndsuntilth eindicat or
lam pflashes twice.
Op tions ifth eunloc kingfunction forth edr iver's
door andfuel filler flap has been selected:
R Tounlo cktheve hicl ece ntr ally:press the
Ü buttontwice.
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 tKey .
To do so, deactiv ateth eSmar tKey functions. #
Todeac tivate: press theß buttononthe
Smar tKey twi ce inqu ick succ ession .
The Smar tKey indic ator lam pflashes twice
br ief lyand light sup once. #
Toactiv ate: press anybutt onontheSmar t‐
Ke y.
% When theve hicle isstar tedwit hth eSmar t‐
Ke yin thestor ag ecom partmen tof thecen‐
te rconsole, theSmar tKey functions are
au tomatical lyact ivat ed (/ page12 6). 64
Opening andclosing

#
Tounlo cktheve hicl e:touc hth einner sur‐
fa ce ofthedoor handle. #
Toloc kth eve hicl e:touc hsen sor surface
1 or2. #
Convenience closing:touc hre cess edsen‐
sor surface 2untilth eclosing process has
been completed.
% Further information oncon venie nce closing
(/ page 81). If
yo uopen thetrunk lidfrom outside, thetrunk
lid isaut omaticall yunloc ked. Pr
oblems withKEYLE SS-GO, troubleshoo ting Yo
ucan nolon gerlo ck orunloc kth eve hicl e
using KEYLESS-GO
Po ssible causes:
R The Smar tKey functions have been deactiv a‐
te d.
R The Smar tKey batt eryis we ak ordisc harged. #
Activateth eSmar tKey functions
(/ page64 ). #
Chec kth ebatt eryusing theindicat orlam p
(/ page63). #
Replace theSmar tKey batt ery, ifnec essar y
(/ page65). #
Use there placemen tSmar tKey . #
Use theemer gency keyto loc kor unloc k
(/ page69). #
Have theve hicle andSmar tKey checkedat a
qu alif ied spec ialistwo rkshop. Ther
eis int erfere nce from apo we rful radio
sig nal source .
The KEYLESS-G Ofuncti onisim pa ired by,fo r
ex am ple:
R Highvo ltag epo we rlines
R Mobi lephones
R Electr onicdevices (notebook s,table ts)
R Shielding duetome talobje ctsor induc tion
loops forelectr icalgate systems oraut o‐
matic barrier s #
Mak esur eth at ther eis suf ficie ntdist anc e
be tween theSmar tKey and thepo tentia l
sou rceof interfere nce. Ac
tiv atin g/deac tivatin gthe automati clo ck ‐
ing featur e The
vehicle isloc kedaut omatic allywhen the
ignit ionisswitc hedonand thewheels aretur n‐
ing faster than walkin gpace. 68
Openingand closing

#
Press and hold theÜ 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. #
Tointerru pt con venience opening: release
th eÜ button. #
Tocont inue convenience opening: press
and hold theÜ buttonagain. Con
venience closing (closing theve hicl e
fr om outside ) &
WARNIN GRisk ofentr apment dueto not
pa ying attenti onduring con venie nce
clo sing
Whe nth econ venie nce closing featur eis
oper ating,par tsof thebody could become
tr apped intheclosing area oftheside win‐
do ws . #
When thecon venie nce closing featur e
is operatin g,mon itor theent ire closing
pr ocess andmakesur eth at no body
par tsarein theclosing area. &
WARNIN GRisk ofentr apment when
ope ning orclos ingthesof tto p
Pa rts of thebody could become trapped. #
When opening orclosing, makesur e
th at no body partsarein thevicinit yof
mo ving componen ts. #
Release thebutt onifsomebody
becomes trapped. #
Press and hold theß buttononthe
Smar tKey .
The follo wing functionsar eper form ed:
R The vehicle isloc ked.
R The softto pis closed.
The side windo wsareclo sed when the
sof tto pis closed. #
Tointerru pt con venience closing: release
th eß button.
% Con venie nce closing with KEYLESS- GOonly
closes theside windo ws(/ pag e67 ). Re
sol ving problems withtheside windo ws &
WARNIN GRisk ofbeco ming trap ped or
fa ta lly injured ifre ve rsing protect ion is
no tactiv ated
If yo uclo seaside windowagain imm ediat ely
af te rit has been blocked, theside windo w
will close withincr eased ormaximum forc e.
The reve rsing func tion isthen notactiv eand
body partsma ybecome trapped. Openin
gand closing 81

The
ATAsy stem isarmed automaticall yaf te r
appr oximat elyte nseco ndsinthefo llo wing situa‐
tion s:
R Afterloc king theve hicle withth eSmar tKey
R Afterloc king theve hicle using KEYLES S-GO Indicat
orlam p1 flashes whentheAT Asy stem
is armed. The
ATAsy stem isdeactiv ated aut omaticall yin
th efo llo wing situat ions:
R Afterunloc kingtheve hicle withth eSmar t‐
Ke y
R Afterunloc kingtheve hicle using KEYLES S-
GO
R Afterpr essing thest ar t/ stop butt onwithth e
Smar tKey inthestor ag ecom partmen t
(/ page12 6)
% When theMer cedes‑ Benzemergency call
sy stem isactiv eand thealar mstay son for
mor eth an 30 sec onds, ames sageis aut o‐
mat icall ysen tto theCus tomer Assis tance
Ce nter (/ page 289) .
% Inthecase ofsevere batt erydisc harging,
th eanti- theftalar msystem isaut omaticall y
deactiv ated tofacil itat eth ene xt engine
st ar t.
Deact ivat ing theATA #
Press theÜ, ßor008B buttononthe
Smar tKey .
or #
Press thest ar t/ stop butt onwithth eSmar t‐
Ke yin thestow agecom partment
(/ page12 6)
De activ ating theala rm using KEYLESS-GO #
Grasp theoutside doorhandle withth e
Smar tKey outside theve hicle. Opening
andclosing 83

Ignit
ionkey
see Smar tKey
Imm obiliz er..................................................8 2
Indi catorlam ps
see Warning/ indic ator lam ps
Individ ualdrive pr og ram
Con figur ing.. ............ .............................. 136
Sel ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 135
Insid ere ar vie wmir ror
see Exterior mir rors
Insp ectio n
see ASSYST PLUS
Ins trument cluster
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 200,20 1
In stru men tDi spl ay
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 201
Ins trume ntclu ster ................................... 10
Wa rning/ indic ator lam ps.......................4 47
Ins trum ent Disp layand on-b oard
com puter
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 200
In te llig ent Light System
Ad aptiveHig hbeam Assis t............... .......1 11 Cor
nering light..... <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ........111
Int erior ligh ting
Ad jus ting ............. ...................................113
Ambi entlighti ng.......... <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> .......113
Re adin glam p.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 113
Swi tch-of fdel aytim e..... ........... .............113
Int ermed iatedes tination
Calculat ingaro utewit hint ermed iate
des tinatio ns...........................................2 47
Ent ering ............. .................................... 247
Modifying.. ............................................. 247
St artin gan aut omat icga sst atio n
sear ch<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 246
St artin gth eaut omatic service sta‐
tio nsear ch<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 253
In te rn et connect ion
Comm unicationmodul efun ction ...... .....2 91
Con nection status.. .......................... .....2 92
Displ aying thecon nect ionstatus.. .... .... 292
In fo rm atio n...................................... ...... 291
Re strictions <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> ...............291
In te rn et radio
see TuneIn Io
nizatio n
Ac tivati ng/d eactiv ating (mu ltimed ia
sy stem).. ................................................ 121
iPhone ®
see Apple CarPla y®
see Mercedes- BenzLink J
Jac k
St or ag elocation. ................................... 377
Jum p-startconne ction
Gener alno tes.. ...................................... 342 K
KEYLESS- GO
Loc kingth eve hicle ..................................6 7
Pr oblem. .................................................. 68
Un loc kin gse tting.... ................................ 64
Un loc kin gth eve hicle.... .......................... 67
Kic kdow n
Using... ..................................................1 40
Kne eairbag....... ...........................................42 47
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USB
devices
Conne cting... .................................... .....2 97
User profile
Cr eating. ...............................................2 37
Im por ting/e xporting........ .....................2 38
Op tions.......... ....................................... 238
Se <00570057004C0051004A00110011001100110011001100110011001100110011
00110011> ......................................237
Usi ngthete lephone
see Calls V
Ve hicl e
Ac tivati ng/d eactiv ating standb y
mode ...................... .......................... .....1 50
Cor rect us<0048001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> ...27
Dat aacq uisitio n............ ..........................29
Dat ast or ag e... ......................................... 29
Diagnos ticsconn ection..... ............... .......2 6
Eq uipme nt............. .................................. 22
Li mit edWarrant y.....................................2 9
Loc king (automatical ly)..... ...................... 68
Loc king (from inside )........................... .... 67
Loc king (KEYLESS-GO) ............................ 67
Loc king/unloc king(emerg encykey)... .... 69
Lo we ri<0051004A00110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> ............382 Ma
intena nce........... <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ......23
Med icalai <0047005600110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 27
Pa rking foran extende dpe riod... ........... 149
Pr oblem notification... ..................... ........ 28
QR code rescue card.... ..................... ...... 29
Quali fied specialis two rkshop .................. 27
Ra ising .............................................. .... 379
St andb ymode function.. .................. .....1 49
St artin g(eme rgency operation mode).. .126
St artin g(R emo teOnline).... ............... ....1 27
St artin g(sta rt/s topbutt on).............. .... 125
Swi tching off(s ta rt/s topbutt on)...... .... 143
To wing ...................................................1 99
Un loc kin g(fr om insid e).................... ........ 67
Un loc kin g(KE YLE SS-GO).... .............. .......6 7
Ve ntil ating (co nve nience openi ng) ........... 80
Vo ice com mand s(V oice ControlSy s‐
te m)....... ................................................ 217
Ve hicl edata
Displ aying (DYN AMI CSE LECT).. ...... ...... 136
Ro ofload.. ............................................. 397
Tr ans ferring toAndr oid Au to<0011001100110011001100110011001100110011001100110011001100110011
0011> 283
Tr ans ferring toApp leCa rPlay®
.............. 283
Tu rning radius .......................................3 96
Ve hicle height .................................... ....3 96 Ve
hicle length........................................3 96
Ve hicle width.... .....................................3 96
Whee lbase....... ......................................396
Ve hicl edata stor ag e
Ev ent datare cor der s.<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 33
Mu ltimed iasystem/Mer cedesme
con nect... ................................................ 33
Ve hicl edimens ions...... ............................. 396
Ve hicl eele ctroni cs
No tes... .................................................3 85
Tw o-w ayradios ...................................... 385
Ve hicl eiden tificati onnumber
see VIN
Ve hicl eiden tificati onplat e
Pa int code. ............................................ 387
VIN. .......................................................3 87
Ve hicl eint erior
Coo ling orhea ting (Remo teOnline) .......1 26
Ve hicl eke y
see Smar tKey
Ve hicl emaint enance
see ASSYSTPL US 49
4
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