ECO mode MERCEDES-BENZ E-CLASS CABRIOLET 2021 Owner's Guide

Ha
ve thebr ak efluid regular lyreplaced ata
qu alif ied spec ialistwo rkshop.
Onl yuse abr ak efluid appr ovedby Mer cedes-
Benz accor dingtoMB-F reigabe orMB- Appr oval
33 1.0. Co
olan t No
teson coolant
Obser vetheno teson oper ating fluids
(/ page33 4). &
WARNIN G‑Ri sk offire and injuryfrom
ant ifreez e
If ant ifreez ecom esintocon tact with hot
com ponent partsintheengine compart‐
ment ,it ma yignit e. #
Allo wtheengine tocool down before
ad ding anti freeze . #
Makesur eth at no ant ifreez espills out
ne xt to thefiller open ing. #
Thor oughl yclean offan yant ifreeze
fr om com pone ntpar tsbef orest ar tin g
th eve hicle. *
NO
TEDama gecau sed byinc orrect cool ‐
ant #
Onlyus ecool antthat has been pre‐
mix edwithth ere qu ired ant ifreeze pro‐
te ction.
Inf ormati ononcool antisavailable atthefo l‐
lo wing locations:
R IntheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids 310.1
- Athttps: //bevo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp
R Ataqu alif ied spec ialistwo rkshop *
NO
TEOverhea ting athigh outsid ete m‐
per atur es If
an inapp ropr iat ecoolant isused, the
engine cooling system isno tsuf ficie ntlypr o‐
te cted agains tov erheating andcorrosion at
high outside temp eratur es. #
Alw aysuse coolant approvedby
Mer cedes-Ben z. #
Obser vetheins truction sin the
Mer cedes-Ben zSpecif ications forOper‐
ating Fluids310.1. Ha
ve thecoolant regular lyreplaced ataqu alif ied
spec ialistwo rkshop.
Pr opor tionofantifr eezeconcen trat ein the
engine cooling system:
R Aminimum of50% (antifr eezeprotect ion
do wn toappr oximat ely-3 5°F (-37°C))
R Amaxim umof55% (antifreeze protect ion
do wn to-49°F (-45°C))
Co olant capacity Mode
lC apacity
All mode ls 13.7 US qt
(1 3.0 lite rs) No
teson windshield washer fluid Obser
vetheno teson oper ating fluids
(/ page33 4). 338
Tech nica lda ta

Light
s Displa
ymess ages
Possible causes/conseq uencesand0050 0050
Solutions
: Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisfaulty . #
Drive on car efull y. #
Con sult 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. Displa
ymessag esand warning/ indic ator lam ps 35
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
ç Suspended *I
fyo udepr esstheaccelera torpeda lbe yond theAc tiveDis tance AssistDIS TRONI Cse tting ,th esy stem will switc h
to passiv emode (/page17 4).
ç
Of f *A
ctiv eDis tan ceAssi stDIS TRONI Cwa sdeactiv ated. Ifawa rning tone also sou nds, ActiveDis tance Assist
DIS TRONI Cha sde acti vatedaut omatic ally(/ page17 6).
Active Distance AssistCur-
rently Unavailable See
Opera tor'sManu al *A
ctiveDis tan ceAssi stDIS TRONI Cis temp orarily una vailable.
The ambien tcon dition sar eouts idethesy stem limits (/page17 4).
As soo nas theambient conditions arewit hin thesy stem limits, thesy stem will become available again. #
Drive on .
Ac tiveDis tan ceAssist Inop-
erat ive *A
ctiveDis tan ceAssi stDIS TRONI Cis ma lfunctio ning.
Ot he rdr ivi ng systems anddriving safetysy stems mayalso bemalfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop.
Act ive Distance AssistNow
Availabl e *A
ctiveDis tan ceAssi stDIS TRONI Cis op erati ona lag ain. #
Swi tchon ActiveDis tance AssistDIS TRONI C(/ page 176). Dis
play messa gesand warning/ indic ator lam ps 369

Ac
tiv eSte ering Assis t
Ac tivati ng/d eactiv ating........... ..............183
Ac tiveEmerg encyStop Assis t............... 183
Ac tiveLa ne Chang eAssi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 184
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>181
Sy stem limits. ........................................1 81
Ac tiv eTr af fic Jam Assis t
Ac tivati ng/d eactiv ating........... ..............181
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>181
Ad aptiv ecr uise contr ol
see ActiveDis tance AssistDIS TRONI C
Ad aptiv eHighb eamAssist
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>118
Swi tching on/of f.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 119
Ad aptiv eHighb eamAssistPlus
Ac tivati ng/d eactiv ating........... ..............120
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>119
Ad diti ves
Engi neoil.... ............ ..............................336
Fu el....................................................... 336
Ad diti ves(engine oil)
see Additiv es
Ad diti ves(fuel)
see Fuel ADS
PLUS dam ping system
see AIR BO DY CONTR OL
Ad versewe ather light....... ........................117
Af ter-sales service center
see ASSYSTPL US
Air bag
Re duced protect ion.. ...............................4 4
AIR BODY CONT ROL
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 200
Sus pens io<0051001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 199
Air cond itioning menu
Callin gup .......................................... .....1 31
Air distribut ion
Se tting. .................................................. 130
Se tting (MBU Xmul time diasy stem).. ..... 132
Air freshen ersystem
see Perfume atomiz er
Air inle t
see Air-water duct
Air pressu re
see Tire pressur e
Air suspension
see AIRBODY CONTR OL Air
vents
Ad jus ting (front) ............ ........................ 134
Ad jus ting (rea r)............. .........................135
Ad jus ting theAIRSC ARFvents ............... 135
Air vents
see Airvents
Ai r-condi tioningsystem
see Climat econ trol
Air -recir cula tion mode.............................. 133
Air -water duct
Ke eping free... ....................................... 270
Airb ag
Ac tivati on........... .....................................36
Fr ont airbag (driver ,fr ont passeng er)......42
Head airbag ............................................. 42
Ins tallation locations...............................4 2
Knee airbag.... .........................................4 2
Ov ervie w.. ............................................... 42
PA SSENGER AIRBAGind icat orlam p....... 47
Pr otect ion................................................ 43
Side airbag ..............................................4 2
AIR CAP
Ac tivati ng........... .....................................79
Dea ctivating........... ................................. 79 40
8
Inde x

Con
venience opening ..................................8 5
Coolant (engine)
Capacit y.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 338
Ch eckleve l............................................ 269
No tes... ............................................. ....3 38
Co oling
see Clima tecontr ol
Co pyrights
Licen se.................................................... 34
Tr ademar ks<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 34
Co rnering light ...........................................1 16
Cr oss Traf fic Aler t......................................2 16
Cr osswind Assist
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 167
Cr uise contr ol
Ac tivati ng........... ................................. ...172
Butt ons<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>........172
Callin gup aspee d.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 172
Dea ctivating............ ..............................172
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>171
Re quiremen ts........................................ 172
Sel ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 172
Se tting aspe <0048004700110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 172 St
or ing aspeed... .............................. ..... 172
Sy stem limit ations. ........................... ..... 171
Cus tomer Assist ance Center (CAC )........... 28
Cus tomer Relat ions Depar tment. .............. 28 D
Dashboa rd
see Cockpit
Data acquisition
Ve hicle. ............................................. ...... 29
Data protection rights
Dat ast or ag e... ......................................... 32
Data storage
Dat apr otect ion rights ........................ ..... 32
Elect ronic contr oluni ts<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> .29
Online services...... ..................................3 2
Ve hicle. ............................................. ...... 29
Da ytime running lampmode
see Daytime running lights
Da ytime running lights
Switc hingon/o ff<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 121
Deact ivat ing theala rm (ATA )<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 87Deale
rship
see Qualified speci alist wo rkshop
Dec laration ofconf ormity
Wi reless vehicle component s.................. 25
Dec orativ efo il(cleaning instructions) .... 273
Def initions (tiresand loading) .................. 316
Des tinat ion entry
Ent ering aPOI oraddress...... ................237
De tectin ginat tentiv eness
see ATTENTION ASSIST
Diagnos ticsconnec tion.............................. 25
Digit alOper ator's Manua l... ........................ 18
Dingh yto wing
see Tow- bar system
DIRECT SELECT leve r
Eng aging drive po sitio n............ .............153
Eng aging neutr al....... .............................152
Eng aging par kposi tion......... .................152
Eng aging park position automatic ally....1 52
Eng aging reve rsege ar. .......................... 152
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 151
Disp lay(car e).............................................2 77 Inde
x41
3

ECO
Assis t
Dis playing ........................................ ...... 149
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 147
ECO display
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>146
ECO star t/s topfunc tion
Au tomatic engine star t.......................... 145
Au tomatic engine stop..... .................. ....1 45
Me thod ofoper ation.. ............................1 45
Switc hingoff/on ................................... 146
Electr icpa rking brak e
Appl ying automat ically.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 161
App lying orreleasing manuall y.............. 162
Emerg encybraki ng............ ....................163
Re leasing automat ically.<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 162
Electr onicStabil ityProg ram
see ESP®
(Electr onicStabilit yPr og ram)
Emer gency
Fir st-ai dkit (softsided)...... ...................2 80
Ov ervie wof thehelp functions........ ........ 16
Re flect ive saf etyve st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 279
Re mo ving thewa rning triang le.............. 279
Se tting upthewa rning triang le............. 280
Emer gency braking ................................... 163 Emer
gency braking
see BAS(Br akeAssi stSystem)
Emer gency engine star t....... .................... 295
Emer gency key
Loc king adoor ................................... ......7 2
Un loc kin gadoor. .................................... 72
Emer gency oper ation mode
St artin gth eve hicle ........................... ....1 39
Emer gency release
Tr unk lid(from inside) ...................... ........ 76
Emer gency spar ewheel
No tes... ............................................. ....3 28
Emer gency Tensioning Devices
Ac tivati on........... .....................................36
En gine
ECO star t/ stop funct ion.................. ...... 145
Engi nenum ber......... ............. ................332
St artin g(eme rgency operation mode).. .139
St artin g(R emo teOnline).... ............... ....1 40
St artin g(sta rt/s topbutt on).............. .... 138
St artin gassis tance <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ......290
Swi tching off(s ta rt/s topbutt on)...... .... 157 Engine
data
Dis playing .............................................. 150
Engine number.......................................... 332
Engine oil
Ad ditiv es...............................................3 36
Ca paci ty....... ......................................... 337
Che cking theoil leve lusing theon-
boar dcom puter.. ................................... 267
MB- Freig abe orMB- Appr oval.. ...............3 37
Qua <004F004C0057005C001100110011001100110011001100110011001100110011
001100110011> ....................................337
To pping up............................................. 268
EQ boos t
Oper ating safety.. .................................... 23
Quali fied specialis two rkshop .................. 27
ESC (Electr onicStabil ityContr ol)
see ESP®
(Electr onicStabilit yPr og ram)
ESP ®
Cr osswi ndAssis t...................................1 67
ESP ®
(Electr onicStabil ityProg ram)
Ac tivati ng/d eactiv ating........... ..............168
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 166
Ext erior light ing
see Ligh ts In
de x 41
9

Genuin
epar ts........ ...................................... 20
Genuin ewo od (Car e).................................2 77
Glide mode...... ........................................... 154 H
Handbr ake
see Electr icpar king brak e
Handlin gch aract eristics (unus ual)....... ..299
HAND S-FREEAC CESS .................................. 74
Hazar dwa rning light s...............................1 15
Hazar doussubstances
Inf ormation .......................................... .... 23
Head airbag .................................................4 2
Head leve lheat ing(AIRSC ARF).................. 99
Head restra int
Fr ont (adjus tingmechanicall y)................ 93
Re ar (installin g/remo ving).......................9 4
Head-up Display
Ad jus ting disp lay el eme nts(on-bo ard
com puter)....... .................................... ..223
Ad jus ting thebr ightn ess(on-boar d
com puter).. ...... ................................. ....2 23 Fu
nctio n...<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>222
Menu (on-bo ardcom puter)....... .......... .. 223
Oper ating thememor yfunc tion............ 104
Se tting theposition (on-boar dcom‐
put er)....................................................2 23
Switc hingon/of f.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 224
Hea dlam ps
see Automatic driving lights
Headlin er(car e)..... ....................................2 77
Heating see Climat econtr ol
Help call
see Mercedes-Benz emergencycallsystem
High beam
Ac tivati ng/d eactiv ating........... ..............114
High-be amflasher .....................................114
High-be amheadlam ps
Ad aptiveHig hbeam Assis t............... ...... 118
Ad aptiveHig hbeam Assis tPlus ........ ...... 119
Highw aymode ........... ............ ....................117
Hill star tassi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 169 HOLD
functio n
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 168
Swi tching on/of f.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 169
Home screen (media display)
Ov ervie w... ...... ...................................... 226
Hood Opening/clo sing................................... 265 I
Iden tificatio nplat e
Engine ................................................... 332
Re frig er ant....... .....................................3 39
Ve hicle. .................................................3 32
Ign itio n
Switc hingon(Start/S topbutt on).......... 137
Ignit ionkey
see Smar tKey
Imm obiliz er..................................................8 6
Indi catorlam ps
see Warning/ indic ator lam ps
Individ ualdrive pr og ram
Con figur ing.. .......................................... 150
Sel ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 150 Inde
x42
1

Closin
g(all) .............................................8 2
Closin gusin gth eSmar tKey <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 85
Co nvenienc eclosing featur e...................8 5
Con venie nce openi ng<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....85
Ope ning <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ..82
Ope ning (all). <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 82
Ope ning with theSmar tKey <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 85
Pr obl <0048005000110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 86
Siz edes ignati on(tires)............................. 314
Smar tKey
Ac ous ticlocking verificati onsignal ......... 66
Batt er<005C001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> ..68
Ener gyconsu mption............ .................... 67
Fe atur es.................................................. 65
Ke yring attachme nt.... <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...67
Mec hanical key......... ...............................67
Ov ervie w.. ............... ........................... ..... 65
Pa nic alar <0050001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....66
Pr ob le<0050001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...........69
Un loc kin gse tting.... .................................6 7
Smar tKey functio ns
Deactiv ating............................................ 67
Smar tphone
see Smar tphone integr ation see
Telephon e
Sma rtphon eint egratio n
Ov ervie <005A001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>251
Sno wch ains.. ............................................300
Soc ket(1 2 V)
Fr ont cent erconsole ........................ ..... 109
Sof tto p
Car e................................................... ....2 73
Closin g(sof t-to pswitc h).......................... 76
Closin gusin gth eSmar tKey <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 85
Ope ning (soft-top switch)<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 76
Opening withth eSmar tKey <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 85
Pr obl <0048005000110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 82
Re loc kin g.......................................... .......7 8
Sof t-top switc h............................................ 76
Sof twareupda te
Sy stem updat es.....................................2 32
Soun d
PRE-S AFE®
Sound ................................... 50
Whee lsand tires..... ...............................299
Soun dmenu
Fu nctio nsovervie w... ............................2 63 Spar
ewhe el
see Emer gency sparewheel
Specia lseat beltretract or......... <0011001100110011001100110011001100110011001100110011001100110011
0011> 56
Spe ciali st wo rkshop .................................... 27
Speed index(tir es).. ..................................3 14
St andb ymode
Ac tivati ng/d eactiv ating........... ..............164
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>163
St anding lights........ ................................... 113
St art-of fassi st
see Optimized acceleration
St art/s topbutt on
Pa rking theve hicle.... ............................1 57
St artin gth eve hicle ...............................1 38
Switc hingonthepo we rsupp lyor
ignitio n..................................................1 37
St art/s topfunc tion
see ECOstar t/ stop funct ion
St arterbatt ery
Ch arging (Remo teOnline). ..................... 140
St arting assistance
see Jump -sta rt connecti on 430
Index