2021 MERCEDES-BENZ S-CLASS CABRIOLET tow

R
Recomme ndedtirepr ess ures 1 forcold
tir es. The recomme ndedtirepr ess ures are
va lid forth emaximum permissible loadand
up tothemaximum permissible vehicle
speed.
Please alsonote:
R Information onper missib lewe ight sand loads
on theve hicle identif ication plate
(/ page39 7).
R Information ontirepr essur ein thetir epr es‐
sur eta ble (/ page368 ).
Fu rther relat ed subje cts:
R Determ inin gth emaximum permissible load
(/ page37 3)
R Noteson tirepr essur e(/ page366). Ste
psforDe term ining Correct Load Limit The
follo wing steps have been developed as
re qu ired ofall manuf acturersunder Title 49,
Co de ofU.S. Feder alRe gulations, Part57 5, pur‐
sua nttothe"N ational Traf fic and MotorVe hicle
Saf etyAc tof 1966". #
(1):Locat eth est at emen t"The combined
we ight ofocc upant sand cargoshould never
exc eed XXX kgorXXX lbs." onyour vehicle's
placar d. #
(2): Determ ine thecombin edweight ofthe
dr iver and passeng ersth at will beriding in
yo ur vehicle. #
(3): Subtr actthecombin edweight ofthe
dr iver and passeng ersfrom XXX kgor
XXX lbs. #
(4): The resulting figur eeq uals theav ailable
amoun tof car goand luggageload capac ity.
Fo rex am ple: if"XXX "eq uals 1,400 lbsand
th er ear efive occupant sin your vehicle with
a we ight of150lbs eac h,themaximum
car goand luggageload capacity is650 lbs
(1 ,400 -75 0(5 x15 0) =650 lbs). #
(5):De term ine thecombin edweight oflug‐
ga ge and cargobein gloaded ontheve hicle.
The weight mayno tsaf elyexc eed theav aila‐
ble cargoand luggageload capac itycalc ula‐
te din step 4. #
(6): Ifyo ur vehicle willbetowing atrailer ,
load from your trailer willbetrans ferred to yo
ur vehicle. Consult this manual todeter‐
mine howmuc hth is reduces theav ailable
car goand luggageload capac ityofyour vehi‐
cle.
% Notall vehicles areper mitt edtotow a
trailer .To wing atrailer isonl yper mittedifa
tra iler -hit chisins talled. Please consult an
aut hor ized Mercedes -Benz dealer ifyo uha ve
an yqu estion sabout towing atrailer with
yo ur vehicle.
Ev en ifyo uha ve cal cul ated thetot alload care‐
full y,yo usho uld still mak esur eth at themaxi‐
mum permissible gross weight andthemaxi‐
mum gross axle weight rating ofyour vehicle are
no texc eeded. Details can befound ontheve hi‐
cle identif ication plate. #
Have your loaded vehicle –including driver ,
occupants andload –we ighed onave hicle
we ighbr idge.
The measur edvalues mayno texc eed the
maximu mper missi blevalues stat ed on the
ve hicle identif ication plate. Wheels
andtires 37
3

shop.
Thenewwheel mustha ve the
cor rect dimensi ons. Obs
erve thefo llo wing noteson remo ving an
emerg encysparewhee l:
R Beforestow ing theemer gency sparewheel,
mak esur eth er eis no air leftin thetir e.
If neces sary,allo wtheair toescape.
R Torelease airfrom thetir e: remo vethe
va lve cap ofthetir e.
R Press down theme talinse rtin theva lve
using apoint edobje ct,e.g. apen.
R Screw theva lve cap ontoth eva lve.
Obser vethefo llo wing noteson installing an
emer gency sparewheel:
R Chec kth etir epr essur eof theemer gency
spa rewheel installed. Correct thepr essur e
as neces sary.
R The maximum permissible speedwithan
emer gency sparewheel installed is50 mph
(80 km/ h). R
Donotins tallsno wch ains ontheemer gency
spa rewheel.
R Replace theemer gency sparewheel afte rsix
ye arsat thelat est,re ga rdless ofwe ar.
% Ve
hicl eswith atir epr ess uremonit oring
sy stem: Ifan emer gency sparewheel is
ins talled, thetir epr essur emonit oring sys‐
te m canno tfunction reliabl y.Fo ra fe w
minut esafte ran emerg encysparewhee lis
ins talled, thesy stem mayst ill displa yth etir e
pr essur eof there mo vedwheel. Onlyre star t
th esy stem again when theemer gency spare
wheel hasbeen replaced withane wwheel.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page366)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page37 2)
R Tire pressur eta ble (/ page368 )
R Noteson installing tires (/ page38 4) 39
4
Wheels andtires

No
teson tech nical data
Mer cedes- AMGvehicl es:obse rveth eno tesin
th eSupplement .Ot her wise, youma yno tre cog‐
nize dangers.
The data stat ed onlyapplies tovehicles with
st andar deq uipme nt.Yo ucan obtain further
inf ormation from anaut hor ized Mercedes- Benz
Cent er. Ve
hicl eele ctroni cs Tw
o-w ayradio s No
teson installing two-w ayradio s &
WARNIN GRisk ofacci dent dueto
im proper workon two-w ayradios
If tw o-w ayradios aremanipulat edorretrof it‐
te dincor rectl y,theelectr omagne ticradiation
fr om thetw o-w ayradios caninterfere wit h
th eve hicle electr onics andjeopar dizethe
oper ating safetyof theve hicle. #
Yousho uld have all workon electr ical
and electr oniccomponent scar ried out
at aqu alif ied spec ialistwo rkshop. &
WARNIN GRisk ofacci dent from incor ‐
re ct ope ratio nof two-w ayradios
If yo uoper atetw o-wa yra dios incor rectl yin
th eve hicle, theelectr omagne ticradiation
could interfere wit hth eon- boar delectr onics,
fo rex am ple, if:
R The tow- wa yra dio isno tcon nectedto an
ex terior ant enna
R Ifth eex terior ant enna isno tcor rectl y
mou nted orisno tof low reflect ion
This could jeopar dizetheoper ating safetyof
th eve hicle. #
Have thelow- reflect ion exterior
ant enna installed ataqu alif ied spec ial‐
is two rkshop. #
When operating two-w ayradios inthe
ve hicle, alwaysconn ectthem tothe
lo w- reflect ion exterior ant enna. *
NO
TEInva lidation oftheoper ating per‐
mit due tofailur eto com plywith the
ins truct ions forins tallation anduse The
oper atingper mit maybe inva lidat edif
th eins truction sfo rins tallation anduseof
tw o-w ayradios areno tobser ved. #
Onlyuse appr oved freq uency bands. #
Obser vethemaximum permissible out‐
put powe rin these freq uency bands. #
Onlyuse appr oved ant enn aposition s. Te
ch nica lda ta 395

Onl
yuse products approvedby Mer cedes-Ben z.
Yo ucan iden tifyoperatin gfluids approvedby
Mer cedes-Ben zby thefo llo wing inscript ions on
th econ tainer :
R MB- Freig abe (e.g. MB-Freig abe 229. 51)
R MB- Appr oval (e. g.MB- Approva l229 .51)
Fu rther information onappr ovedoper ating flu‐
ids:
R intheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids athttps:/ /bevo.mercedes-
benz.co m(byen tering thedesignation )
R intheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids intheMer cedes- BenzBeVo
App (byent ering thedesignation )
R ataqu alif ied spec ialistwo rkshop Fu
el No
teson fuel grades forve hicl eswith aga s‐
oline engine
Obser vetheno teson oper ating fluids
(/ page39 9). *
NO
TEDama gecau sed bythewr ong fuel Ev
en small amounts ofthewr ong fuelcould
re sult indamag eto thefuel system, the
engine andtheemission control system. #
Onlyre fuel withlow- sulfur gasoline.
This fuelmaycont ainupto10%ethanol by
vo lume. Your vehicle issuit able foruse with
E1 0fuel .
Ne verre fuel withone ofthefo llo wing fuels:
R Dies el
R Gasoline withmor eth an 10%ethanol by
vo lume, e.g.E15, E8 5,E100
R Gasoline withmor eth an 3% methano lby
vo lume, e.g.M15,M30 ,M85 ,M1 00
R Gasoline withadditiv escon tainin gme tal
If yo uha ve acc iden tally re fuel edwithth e
wr ong fuel: #
donotswit chtheignition on. #
Consult aqu alif ied spec ialistwo rkshop. If
th eav ailable fuelisno tsuf ficie ntly low in sul‐
fur ,th is can produce unpleasant odors.
Onl yre fuel withfuel that has atleas tth eoct ane
number specifiedintheins truction labelinthe
fuel filler flap (/ page14 0).
If yo uwa ntmaxim umengine output:onl y
re fuel withunle adedpr emiu mgrade gasoline
wit han oct ane number ofat leas t91 AKI/
95 RON.
As ate mp orarymeasur e,ifth ere comme nded
fue lis no tav ailable, youma yalso useunle aded
re gular gasoline withan oct ane number ofat
leas t87 AKI/9 1RO N.
* NO
TEPrema turewe arthro ugh unleaded
re gular gasoline Un
leade dre gular gasoline cancause the
engine towe armor equ ickl yand impair lon‐
ge vity and perform anc e.
If unle aded premium grade gasoline is
una vailable andyouha ve torefuel using
unle adedre gular gasoline with87 AKI/
91 RON: 400
Tech nica lda ta

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
To appl y: #
switc hth eignition off.
The electr icpar king brak ewill beapplied automaticall y.
If th eelectr icpar king brak eis no tto be applied, e.g.atan aut omatic carwash orwhen theve hicle isbeing towe d,
lea vetheignition switchedon.This does notinclude having theve hicle towe dwit hth ere ar axle raised.
If th eelectr icpar king brak eis no tapplied automaticall y: #
Switc hth eignition offand switc hit bac kon. #
Release andthen apply theelectr icpar king brak emanuall y(/ page14 7).
If it is still no tpossible toappl yth eelectr icpar king brak e: #
Consult aqu alif ied spec ialistwo rkshop. #
Wher enecessar y,also secureth epar kedve hicle agains tro lling away.
To release: #
Ifth econ ditions forau tomatic release arefulf illed andtheelectr icpar king brak eis no tre leased automat ically,
re lease theelectr icpar king brak emanuall y(/ page14 7).
If it is still no tpossible torelease theelectr icpar king brak e: #
Donotcon tinue driving. Consult aqu alif ied spec ialistwo rkshop. 428
Displa ymessag esand warning/ indic ator lam ps

Dash
boardlight ing
see Instrument clusterlig hting
Dat aacq uisiti on
Ve hicle .................................................. 29
Data impor t/expor t................................ 244
Fu nctio n/no tes ...... ............................. 244
Im por ting/e xporting ............................ 244
Data storage
Ele ctroni ccontr oluni ts ............ .............29
Online services ...................................... 30
Ve hicle .................................................. 29
Dat e
Se ttin gth etime anddateaut omati‐
call y..................................................... 239
Da ytim eru nning lampmode
see Daytime running lights
Da ytime running lights ............................1 11
Swi tching on/of f<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 111
Deact ivat ing theala rm (ATA ).................... 82
Dealer ship
see Qualif iedspec ialistwo rkshop
Dec laration ofconf ormity
Wi reless vehicle component s................2 5 Decor
ative fo il(cleaning instructions)
.. ........ .........................................................3 36
DE F
Fill leve l...............................................2 07
Ra nge <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 207
De finitions (tiresand loading) ................3 81
Des tinat ion .............................................. 266
Ed iting intermed iatedes tinat ions........ 255
Ed iting thepr ev ious destination s.... .... 266
Ex tern al ...............................................2 66
Sa ving (current vehicle position) ......... 266
Sa ving asglobal favo rite <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 266
St or ing amap position ........................ 266
Des tinat ionentr y.....................................2 51
Ent ering a3 wo rdaddr ess .............. .....2 56
Ent ering aPOI oradd ress .................... 251
Ent ering anintermediat edes tination ..255
Ent ering geo-coor dinates.................... 256
Select ingacont act........................ ..... 256
Select ingaPOI .............................. ...... 254
Select ingfrom themap ....................... 257
Select ingprev ious destination s...... .....2 54
De tectin ginat tentiv eness
see ATTENTION ASSIST Diagnos
ticsconnec tion............................2 5
Digita lOp erator' sMa nua l........................ 20
Digita lsp eedo meter ............. ..................208
Di ng hy towing
see Tow- bar system
DIRECT SELECT leve r............. ..................136
Eng aging drive po sitio n............ ........... 138
Eng aging neu tral ............ ...................... 137
Eng aging park position ........................ 138
Eng aging park position automatic ally .. 138
Eng aging reve rsege ar .........................1 37
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>136
Disp lay(Car e)...........................................3 41
Disp lay(m ult imedi asy stem)
Se ttings ...............................................2 38
Di spla y(on -boar dco mp uter)
Displ ayson themultifunc tiondispla y.. 206
Displa ycont ent
Se tting theadditional value rang e ....... 205
Di spl aymes sage........... ..........................407
Ca lling up(on-bo ardcom puter) ..... ......4 07
No tes ................................................... 407 47
6
Inde x

Ser
vice Required Do NotShif tGear s
Vi sit Dealer .......................................... 424
Shif tto 'P' or'N' toStartEn gin e.........4 24
St op Vehicle LeaveEngi neRunning
Wa itTrans miss ionCoolin g.................. 425
Ti re Press. Monit orCur rently
Un available .......................................... 448
Ti re Press. Monit orInopera tive ........... 448
Ti re Pressur eMonit orInopera tiveNo
Wheel Sensors .................................... 449
Ti re sOv erheat ed................................. 450
To Dese lect Por N, Dep ress Brak e
and StartEn gin e.................................. 423
To switc hengine off,pr ess and hold
St art/ Stop butt onforat lea st3
secs. orpress 3times. ........................ 421
Tr af fic Sign AssistCamer aVi ew
Re strict ed See Operator's Manua l...... .438
Tr af fic Sign AssistCur rently Unavail‐
able SeeOperat or'sMan ual................ 438 Tr
af fic Sign AssistInoper ative..... ........ 438
Tr ans miss ionMalfun ction Stop ........... 425
Displa yon thewindsh ield
see Head- upDis play
Dis tance control
see ActiveDis tance AssistDIS TRONI C
Di stance recor der
see Trip dis tance
DI ST RO NIC
see ActiveDis tance AssistDIS TRONI C
Do or
Loc king (emerg ency key) ................ .......6 5
Loc king (from inside )..... .................... .... 63
Opening (from theinside) ............... .......6 2
Po we rclosi ngfunction ..........................6 5
Un loc kin g(emer gency key) ............ .......6 5
Un loc kin g(fr om theinside) ...................6 2
Door controlpan el.....................................1 4
Door controlpan el(rear passeng er
com partment) ............................................ 16
DO T,Tire Iden tificat ionNumbe r(TI N) ... 377 Dr
aw bar
see Tow- bar system
Dr inking anddriving ................................ 130
Dr ive Awa yAssis t.... ................................ 188
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 .............................1 50
ABS (Anti-loc kBr aking System) ........... 151
Ac tiveBr ak eAssi st<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 154
BA S(Br akeAssi stSystem) .................. 152
Cameras .............................................. 150
EBD (electr oni cbr ak efo rc edis tribu‐
tion )..................................................... 154
ESP ®
Cr oss wind Assi st<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 153
Ov ervie w ..............................................1 51
Ra dar and ultrasonic sensors.............. 150 480
Index

Del
eting ...............................................2 34
Mo ving .............. .................................. 234
Ov ervie w ....... ................................... ...233
Re nam ing<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>234
Fi llleve l
DEF ............ .................................... ......207
Fi rs t-aid kit(sof tsi ded) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> ....345
Fl aco n
Inse rting/ remo ving ......................... ..... 121
Flat tire .....................................................3 45
Cha nging awhe el....... .........................388
MOExt ended tires ....... .........................346
No tes .................................................. 345
TIREFIT kit...........................................3 47
Flat towing
see Tow- bar system
Floor mats......... ....................................... 105
Fo ilco vering
Ra dar and ultrasonic sensors.............. 150
Fo lding draftsto p
Car e................................................ .... 340
Fo lding windscreen
Ins talling ................................................ 75 Re
mo ving ...............................................75
Fr ag rance
see Perfume atomiz er
Fr ee sof tware ............................................ 32
Fr eq uencies
Tw o-w ayradio ................................ ...... 396
Fr eq uency band
Dialin g(on -boardcom puter) ................ 210
Fr ont airbag ...............................................4 0
Fr ont passeng erseat ................................ 86
Ad jus ting from thedr iver's seat ...... ...... 86
Fr ont passeng erseat
see Seat
Fu el ...........................................................4 01
Ad ditiv es........................................ ...... 401
E1 0 ...................................................... 400
Fu elreser ve <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 401
Ga sol ine <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 400
Qua lity (gas oline )<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 400
Re fuel ing ............................................. 140
Sul fur cont ent <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 400
Ta nk cont ent <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ..............401 Fu
elconsum ption
On- boar dcom puter .............................2 08
Fu nction seat
see Door controlpanel
Fu nction seat(rear passeng ercom‐
par tment)
see Seat (rear passeng ercom partmen t)
Fu ses ........................................................ 361
Bef orere placing afuse ........................ 361
Dashboar dfuse box............................ 363
Fu se assignment diagram.................... 361
Fu se boxin theengine compartmen t.. 362
Fu se boxin thefront -passen gerfo ot ‐
we ll...................................................... 363
No tes ................................................... 361
Fu ses
see Fuses G
Gar agedoor opener
Clea ring thememor y........................... 146
Opening orclosing thedoor ................1 46
Pr ogr ammi ngbutt ons .......................... 144
Re sol ving problems ............................. 145 Inde
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