ECO mode MERCEDES-BENZ C-CLASS CABRIOLET 2021 Owner's Manual

The
Oper ator's Manual andMaint enanc eBookle t
ar eim por tant docum ents andshould be kept in
th eve hicle. Ser
vice andvehicl eoper ation Ve
hicl eoper ation outside theUS Aor Cana da When
youar eabr oad withyo ur vehicle, observe
th efo llo wing points:
R Service point sor replacemen tpar tsma yno t
be available immediat ely.
R Unleaded fuelmayno tbe available forve hi‐
cles withacat alytic converter .Leaded fuel
ma ycause damag eto thecat alytic converter .
R The fuel mayha ve an extreme lylow oct ane
numb er.Un suit able fuelcancause engine
damag e.
Some Mercedes-Benz modelsareav ailable in
Eur ope thro ugh ourEuropean DeliveryPr og ram.
Fo rmor einf ormation, pleaseconsult anauthor‐
ized Mercedes‑B enzservice center,or write to
one ofthefo llo wing address:
In theUS A: Mer
cede s-Benz USA,LLC
Eur opea nDeliv eryDepar tment
One Mercedes-Benz Drive
Sandy Springs, GA30328
In Canada:
Mer cedes-Benz Canada,Inc.
Eur opea nDeliv eryDepar tment
98 Vande rhoof Avenue
To ronto, Ont ario M4G 4C9 Mai
nten anc e Yo
ur cus tomer advisorconf irms theser vice in
th eser vice repor t. Ro
adside Assistan ce The
Mercedes -Benz Roadside Assis tance Pro‐
gr am offers tech nica lhel pin thecase ofa
br eakdo wn.Your calls totheto ll-f reeRo adside
As sis tance Hotline areans weredby our agents
24 hour sa da y,365 days aye ar.
1- 80 0-FO R-MER Cedes (1-800-367-63 72)(US A) 1-8
00-387-0 100(Canada)
Yo ucan find further information inthe
Mer cedes-Ben zRo adside Assis tance Progr am
br oc hu re (US A)orthe"R oadside Assistance"
secti onintheSer vice andWarrant ybook let
(Canad a).Youwill find both intheve hicle docu‐
ment wallet. Chang
eof address orchang eof ow ner ship In
theev ent ofach ang eof addr ess, please send
us the"No tification ofaddr esschang e"inthe
Ser vice andGuarant eeboo kletor simply callth e
Mer cedes-Ben zCus tomer Assis tance Center
(US A)on theho tline number
1-8 00-FOR-MER Cedes (1-800-367-63 72)or Cus‐
to mer Service (Canada )on 1-800-38 7-0100. We
can then reac hyo uin atim elyfa shion, ifneces‐
sar y.
If yo usell your Mer cedes,pleas elea veall liter a‐
tur ein theve hicle sothat itis available tothe
ne xt ow ner .If yo uha ve pur chased aused vehi‐
cle, please sendusthe"No tice ofPur chase of
Used Car"intheSer vice andGuar anteebookle t
or sim plycall theMer cedes- BenzCustomer Gener
alno tes 23

*
NO
TEDama getotheve hicle duetodriv‐
ing toofast and due toimpact sto the
ve hicle underbody orsuspension compo‐
nent s In
thefo llo wing situat ions,in par ticular ,th er e
is arisk ofdamag eto theve hicle:
R The vehicle becomes grounded, e.g.ona
high curb oran unpavedro ad
R The vehicle isdriven toofa st over an
obs tacle ,e.g. acurb ,spe edbump orpot‐
hole
R Ahea vyobject strike sth eunderbody or
suspension componen ts
In situation ssuc has these, damag eto the
body ,underbody ,suspension componen ts,
wheels ortires ma yno tbe visible. Compo‐
nen tsdamag edinthis wa ycan unexpec tedly
fa ilor ,in thecase ofan acciden t,ma yno lon‐
ge rabso rbthere sulting forc eas intended.
If th eunderbody panelingisdamag ed,flam‐
mable materials suchas lea ves, grass or
twigs cancollect between theunderbody and th
eunderbody paneling.Thesematerials may
ignit eif th ey come intocont actwith hot
par tsof theex haus tsy stem. #
Have theve hicle checkedand repair ed
immediat elyat aqu alif ied spec ialist
wo rkshop.
or #
Ifdr iving safetyis im pair edwhile con‐
ti nui ng your jour ne y,pull over and stop
th eve hicle immediat ely, while paying
att ent ion toroad and traffic condi tions,
and cont actaqu alif ied spec ialistwo rk‐
shop. Dec
laration ofconf ormity forwi reless vehi‐
cle comp onent s
US A:"Radio based devic es ofthis vehicle com‐
ply withPa rt15 oftheFCC Rules. Opera tionis
subje ctto thefo llo wing twocon dition s:1) These
de vice sma yno tcause harmful interfere nce, and
2) The sedevice smu stacc eptan yint erfere nce
re cei ved, includin gint erfere nce that ma ycaus e
unde sired oper ation.Chan gesor modif ications no
tex pressl yappr ovedby thepar tyresponsible
fo rcom pliance could void theuser's author ityto
oper ateth eeq uipment. "
Canada :"This vehicle contains license-e xemp t
tr ans mitter( s)/r ece iver( s)that com plywit hInno ‐
va tio n,Scie nceand Econo micDe velopmen tCan‐
ada ’sRSS (s).Operatio nis subj ectto thefo llo w‐
ing twocon dition s:(1) These device sma yno t
cause interfere nce, and(2)The sedevice smu st
acc eptan yint erfere nce, including interfere nce
th at ma ycaus eunde sired oper ationof the
de vice. "
US A:"W ireless chargin gsy stem formobil ede vi‐
ces (mode l:WMI2 Wireless Mobile Inte rface) :
th is de vice complies withPa rt18 oftheFCC
Ru les."
The name andaddr essofthepar tyresponsible
is:
peik eracus ticGmbH
Max-Planc k-St r.28-32
61 38 1Fr iedr ichsdor f
Ger man y Gener
alno tes 25

Cer
tain inf ormatio nis simult aneousl ytransf er‐
re dto your smar tphon e.De pen dingon thetype
and integr ation, this inc ludes positiondata,the
da y/night modeandother gener alvehicle sta‐
tus es. Formor einf ormation pleaseconsult the
Oper ator's Manual oftheve hicle/inf otainm ent
sy stem.
This integr ation allowstheuse ofselect ed
smar tphon eapps, suchas navig ation ormusic
pla yerapp s.Ther eis no further interaction
be tween thesmar tphon eand theve hicle; inpar‐
ticular ,ve hicle datais no tdir ectl yaccessible.
The type ofadditional datapr ocessing isde ter‐
mined bythepr ov ider oftheapp being used.
Whic hse ttings youcan make,ifan y,depends on
th especif icapp andtheoper ating system of
yo ur smar tphon e. Onlin
eser vices Wi
reless netw orkconnection
If yo ur vehicle hasawir eless networkconn ec‐
tion, itenables datato be exc hang edbetween
yo ur vehicle andadditional systems. Thewire‐
less networkcon nect ionismade possible bythe ve
hicle's owntrans mitt erand recei veror by a
mobil eend device that youha ve brought intoth e
ve hicle, forex am ple, asmar tphon e.On line func‐
tio ns can beused viathewir eless networkcon ‐
nect ion.This includes onlineservices andappli‐
cation s/apps prov ided toyouby themanuf ac‐
tur eror by other prov ider s.
Manu factu rer's services
Re garding themanuf acturer'sonline services,
th eindividual functionsar edescr ibedbythe
manuf acturerinasui table place, forex am ple, in
th eOper ator's Manual oron themanuf acturer's
we bsit e,wher eth ere leva nt data protect ion
inf ormation isalso given. Personal datama ybe
used forth epr ov ision ofonlin eser vice s.Dat a
ar eexc hang edvia asecur econn ection, suchas
th emanuf acturer'sdesignat edITsystems. Any
per sonal datawhic har ecollect ed,processed
and used, other than forth epr ov ision ofser v‐
ices, isdone soexc lusiv elyon thebasis ofleg al
per mission. Thisisthecase, forex am ple, fora
leg ally prescr ibed emerg encycallsystem, acon ‐
tra ctual agreement orwhen consent hasbeen
giv en. Yo
ucan have ser vices andfunctions, someof
whic har esubject toafe e, activ ated ordeactiv a‐
te d. This excludes legallypr escr ibed functions
and service s,suc has an emer gency callsy stem.
Thir dpar tyser vices
If yo uuse onlineser vices from other prov ider s
(t hir dpar ties ),th ese services areth ere sponsi‐
bility ofthepr ov ider inqu estion andsubject to
th at prov ider's datapr otect ion conditions and
te rm sof use. Asage ner alrule, themanuf ac‐
tur erhas noinfluence onthecon tent
exc hang ed.
Fo rth is reason ,when services arepr ov ided by
th ird par ties ,please asktheser vice prov ider in
qu estion forinf ormation aboutthetype, extent
and purpose ofthecollect ionand useofper‐
sonal data. Data
protection rights Depen
dingonyour count ryor theeq uipment
and rang eof func tions ofyour vehicle aswellas
th eser vices youuse and theser vices onoffer,
yo uar een titled todiffere nt data protect ion
ri ghts. Further information ondat apr otect ion 32
Gener alno tes

Switc
hingtheA/C function on/of fusing the
air conditio ningco ntr olpanel The
A/C function heats,cools anddehu midifies
th eve hicle's interior air. #
Press the005A button.
Switc hof fth eA/C function onlybr ief ly;ot her‐
wise, thewindo wsmayfo gup mor equ ickl y.
Con densation maydr ip from theunder sideof
th eve hicle when cooling modeisactiv e.This is
no tindicativ eof amalfunction. Se
tting climat econtr olto aut omatic mode In
automatic mode, these tte mp eratur eis con ‐
tr olled andmaint ained atacon stant leve lby the
air suppl y. #
Press the 0058 button. #
Toswitc hto manu almode :pr es sth e H
or 008F button. Ac
tiv atin g/deac tivatin gthe climat eco ntr ol
syn chronizat ionfunction viatheair condi‐
tioni ngcontr olpa nel Climat
econ trol can besetcen trall yusing the
sync hronization function.Thetemp eratur eand
air distribution settings forth edr iver's side will
be adop tedaut omatic allyfo rth efront passeng er
side. #
Press the 0 button.
The sync hroniz ation function willbedeactiv ated
if th ese ttings forone oftheot her climat econ‐
tr ol zones arech ang ed. Re
mo ving conde nsatio nfrom the windo ws Wi
ndo wsfogg ed up ontheinsid e #
Press the0058 button. #
Ifth ewindo wscontinu eto fogup: press the
0064 button.
Wi ndo wsfogg ed up ontheout side #
Swit chon thewindshield wipers. #
Press the 0058 button. Switc
hingair-recir culation modeon/off #
Press the0072 button.
The interior airwill berecir cul ated.
Air -reci rculati onmod eaut omat icallyswit ches to
fr esh airmode afte rsome time.
% Ifair -recir cula tion mode isswi tched on,the
windo wsmayfo gup mor equ ickl y. Swi tchon
ai r-re cir cul ation mod eonly briefly. Ac
tiv atin g/deac tivatin gio ni zatio n Mu
ltimed iasystem:
4 Vehicle 5
b Climate Control
5 Ioniz ation
Ioniz ation cleans andrefreshes theint erior airof
th eve hicle. Ionization oftheint erior airisodor‐
less. #
Activate0073 ordeacti vate 0053 thefunc tion. Climat
econ trol 12
1

Dr
ivin g No
teson Mer cedes- AMGvehicl es Obser
vetheno teson thefo llo wing topics inthe
Sup pleme nt,other wise youma yfa ilto recogni ze
da ngers.
% The availabilit yof cer tain func tionsdepen ds
on theeq uipment andmodel oftheve hicle.
R Emo tion Start
R Rear axle lockin gdif fere ntia l
R AMG Perfor mance exhaus tsy stem
R AMG ceramic high-per form anc ecom posit e
br ak esy stem
R Tract ion control
R RACE STAR T
R AMG adaptivespo rtsuspension system
R AMG steer ing-wheel buttons Switc
hingonthepo we rsupp lyor ignit ion &
WARNIN GRisk ofacci dent andinjury
due tochildr enleftunat tende din the
ve hicle
If ch ildr enarelef tunsuper visedintheve hi‐
cle, they cou ld,in pa rticular :
R open doors,ther eb yendang ering other
per sons orroad user s.
R getou tand bestru ck byoncom ingtraf‐
fi c.
R ope rate vehicle equipment andbecome
tr apped, forex am ple.
In addit ion,th ech ildr encould alsosetth e
ve hicle inmo tion, forex am ple by:
R releasing thepar king brak e.
R chang ingthetra nsmiss ionposition .
R star tin gth eve hicle. #
Neverlea vechildr enunat tende din the
ve hicle. #
When leaving theve hicle, alwaysta ke
th eSmar tKey wit hyo uand lockth e
ve hicle. #
Keep theve hicle SmartKey out ofreac h
of childr en. Re
quirement s:
R The Smar tKey isin theve hicle andisrecog‐
nized .
R The brak eped alisno tdep ressed. 12
4
Driving and parking

#
Ifth eve hicle still does notst ar tand thedis‐
pla ymessag ePlace theKey inthe Marked
Space SeeOperator 'sManual alsoappear s
in themultifunc tiondispla y:star tth eve hicle
wit hth eSmar tKey inthemar kedspace
(emer gency operati on mod e)(/ page 126).
% Youcan switchoffth eengine whiledriving.
By pressing button1 forabo utthre esec‐
onds orby pressing button1 thre etimes
wit hin thre esecon ds.Besureto obser vethe
saf etyno tesunder "Driving tips"
(/ page12 9).
St arting theve hicl ewith theSm artK ey inthe
ma rked spa ce(emer gency oper ation mode)
If th eve hicle does notst ar tand thePlace the
Key inthe Marked SpaceSeeOperator 'sManual
messag eappear sin themultifunc tiondispla y,
yo ucan star tth eve hicle inemer gency operati on
mod e. #
Makesur eth at mar kedspace 2isem pty. #
Remo veSmar tKey 1 from theke yring. #
Place Sma rtKe y1 inmar kedspace 2on
symbol 3.
The vehicle willstar taf te ra shor ttime.
If yo ure mo veSmar tKey 1 from mar ked
space 2theengine continues running .Fo r
fur ther engine star ts howe ver,Smar tKey 1 mus
tbe locat edinmar kedspace 2onsym‐
bol 3during theent ire jour ney. #
Have Smar tKey 1 checkedat aqu alif ied
spec ialistwo rkshop.
If th eve hicl edoes notst ar t: #
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. #
Depr essthebr ak epedal andstar tth eve hi‐
cle using thest ar t/ stop butt on.
% Youcan also switchon thepo we rsupp lyor
th eignition withth est ar t/ stop butt on. St
arting theve hicl evia Remo teOnline serv‐
ices Cooling
orheating theve hicl eint erior before
co mmenci ngyour jour ney
Ensur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked. 12
6
Driving and parking

The
engine isrestar tedaut omatic allyif:
R Youen gage trans missi on positio n005B or005E.
R Youdepr esstheacceler ator pedal.
R Youopen orclo sethesof tto p.
R Anautomatic enginest ar tis requ ired bythe
ve hicle.
R Youre lease thebr ak epedal.
R Vehicl eswith a48 Von-b oardele ctrical
sy stem:
- Youre lease thebr ak epedal onado wnhill
gr adient andtheve hicle does notro ll.
- The vehicle rolls on ado wnhill gradien t
and does notaut omat icallyent erglide
mode at15 mp h(2 0km/h).
EC Ostar t/ stop funct ionsymbols inthemulti‐
func tion displa y:
R The 00D6 symbol (green) appear swhen the
ve hicle isat ast ands till:th eengine was
switc hedoffby theEC Ostar t/ stop funct ion.
R The 00D5 symbol (yello w)appear swhen the
ve hicle isat ast ands till:no tall vehicle condi‐
tions foran engine stop have been met. R
Neit herthe00D6 nor00D5 symbol appears
when theve hicle isat ast ands till:an intelli‐
ge nt stop inhibit orwa sde tected, forex am‐
ple, ast op sign.
If th eengine wasswitc hedoffby theEC Ostar t/
st op funct ionand youlea vetheve hicle, awa rn‐
ing tone sou nds and theengine isno tre star ted.
In addition, thefo llo wing displa ymess age
appear sin themultifunc tiondispla y:
Vehicle ReadytoDrive Switchthe Ignit ionOff
Befor eEx iting
If yo udo notswit choffth eignition ,it is aut o‐
maticall yswitc hedoffaf te rth re eminut es. Deactiv
atingoractiv ating theECO star t/
sto pfunc tion #
Press button 1.
If indi catorlamp 2light sup, theEC Ostar t/
st op funct ionisactiv ated.
% Depending onthemodel andtheve hicle
eq uipment, thebutt onmayalso belocat ed
at adif fere nt positio nin thecent ercon sole. Dr
iving andparking 13
3

ECO
displayfun ction The
ECOdispla ysumm arize syo ur drivin gch ar‐
act eristic sfrom thest ar tof thejour neyto its
com pletion andassis tsyouin achie vingth e
mos teconomical driving style.
Yo ucan influen ceconsum ption bydoing thefo l‐
lo wing:
R Drivin gwit hpar ticular care
R Drivin gth eve hicle indrive pr ogr am ;
R Obser vingthege arshif tre comme ndations The
inner segment willlight upand theout er
segment willfill up when thefo llo wing drivin g
st yle is adop ted:
R 1 Moder ateaccelera tion
R 2 Gentle deceler ationandrolling
R 3 Consis tent spe ed
The inne rseg ment willno tlight upand theout er
segment willemptywhen thefo llo wing drivin g
st yle is adop ted:
R 1 Spor tyacceler ation
R 2 Hea vybraking
R 3 Fluct uations inspeed
The ECOdispla ywill showyo uwhen youha ve
dr iven econ omicall y:
R The thre eout ersegment sar ecom pletely fil‐
led simult aneousl y.
R The ECOdispla ylights up.
The additional rang eac hieve das are sult ofyour
dr ivin gst yle in com parison withadr iver wit ha
ve ry spor tydriving style is sho wnunder Bonus fr.
Start. The rang edispl ayed does notindicat ea
fi xe dre duction incon sum ption. DY
NA MIC SELECT switch Fu
nction oftheDY NA MIC SELECT switch *
NO
TEMercede s-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. %
Depe nding ontheengine andequipment,
th eve hicle hasdiffere nt drive pr ogr ams.
Use theDY NA MIC SELE CTswitc hto chang e
be tween thefo llo wing drive pr ogr ams.
The drive pr og ram sele cted app earsin themulti‐
func tion displa yof theon- boar dcom puter.
= Individual
R individual settings
B Sport+
R particular lyspor tydriving 13
4
Driving and parking

#
Ifge arshif tre comme ndation 1appea rs
ne xt to thetra nsmiss ionposition display,
shif tto there comme ndedgear. Using
kickdow n #
Maximum acceleration: depress theaccel‐
er ator pedal beyond thepr essur epoint .
To protect agains tengine overrev ,th eaut omatic
tra nsmiss ionshiftsup tothene xt gear when
max imum enginespee dhas been reac hed. Glid
emod efu ncti on *
NO
TEMercede s-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. Wi
th an ant icip ator ydr ivin gst yle, Glide mode
helps youto reduce fuelconsum ption.
Glide mode isch aract erize dby thefo llo wing:
R The com bustion engin eis disco nnect edfrom
th edr ivet ra in and continues torunin neu tral .
R The trans mis sion positio ndispl ay005B is
sho wningreen.
Glide mode isact ivat ed ifth efo llo wing condi‐
tion sar eme t:
R Drive pr og ram ; issele cted.
R The speed iswit hin asui table rang e.
R The road's courseissuit able, e.g.no steep
uphill ordownhill inclinesortight bends.
R Youdo notdepr esstheaccelera toror brak e
peda l(e xc ep tfo rlig ht brak eapp lications). %
Glide mode canalsobe activ ated ifyo uha ve
select edthe"Eco" setting forth edr ive in the
dr ive pr og ram =.
Gli de mode isdea ctivated again ifone ofthe
condi tions isno long erme t.
Gl ide mod ecan also be preve nted bythefo llo w‐
ing parame ters:
R Incline
R Downhill gradi ent
R Temp eratur e
R Height
R Speed
R Oper ating status oftheengine
R Traf fic situ ation
% Glide mod ecan beende dby pressing a
st eer ing wheel gearshif tpaddle
(/ page13 9). Fu
nction ofthe4MA TIC
4MA TICensures that all four wheel sar edr iven .
To get her withESP ®
and 4ETS,4MA TICimprove s 14
0
Driving and parking

%
Ifyo udepr esstheacceler ator pedal beyond
th ese tting oftheAc tiveDis tance Assist
DIS TRONI C,thesy stem isswitc hedtopas‐
siv emode. Theç Suspende dmessag e
appear sin themultifunc tiondispla y.
Disp layon thespeed ometer
The stor ed speed ishighlight edon thespeedom‐
et er.If th espeed oftheve hicle infront orthe
speed adjustment isless than thestor ed speed
due tothero uteeve ntahead, thesegment sin
th espeedome terlig ht up. Deactiv ationofActive
Dis tance AssistDIS TRONI C,as wellas altera‐
tion sto thespeed duetomanua lor automatic
adop tionofthemaximum permissible speed,are
displa yedin thecon trol feedbac kof themulti‐
func tion displa yon asing leline.
Sy stem limit s
The system maybe impair edorma yno tfunc tion
in thefo llo wing situat ions,fo rex am ple:
R Insnow ,ra in, fog, hea vyspr ay,if th er eis
gl ar e, indir ect sunlight oringrea tly varying
ambien tlight . R
The windsh ieldinthear ea ofthecamer ais
dir ty,fo gg ed up, damag edorcovered.
R Ifth era dar sensor sar edir tyor covered.
R Inpar kingga rage sor on roads withsteep
uphill ordownhill gradients.
R Ifth er ear enar row vehicles infront, suchas
bicy cles ormo torcyc les.
In addition ,on slipper yro ads, brakin gor acc el‐
er atin gcan caus eon eor severalwheels tolose
tr act ion and theve hicle could then skid.
Do notuse ActiveDis tance AssistDIS TRONI Cin
th ese situation s. &
WARNIN GRisk ofacci dent from acce ler‐
ati on orbraki ng byActiveDis tance
Assi stDIS TRONI C
Ac tiveDis tance AssistDIS TRONI Cma yacc el‐
er ateor brak ein thefo llo wing cases ,fo r
ex am ple:
R Ifth eve hicle pullsaway usin gAc tiveDis ‐
ta nce AssistDIS TRONI C. R
Ifth estor ed speed iscalled upand is
consider ablyfa ster or slo werth an the
cur rently driven spe ed.
R IfAc tiveDis tance AssistDIS TRONI Cno
lo ng er detects ave hicle infront ordoes
no tre act toreleva nt objects. #
Alw ayscar efully observethetraf fic con‐
di tions andbeready tobrak eat all
times. #
Take intoacc ount thetra ffic situat ion
bef orecallin gup thestor ed speed. &
WARNIN GRisk ofacci dent dueto insuf ‐
fi cie ntdece lera tio nby ActiveDis tance
Assi stDIS TRONI C
Ac tiveDis tance AssistDIS TRONI Cbrak es
yo ur vehicle withup to50% ofthepossible
deceler ation.Ifth is decele ratio nis no tsu ffi‐
cien t,Ac tiveDis tance AssistDIS TRONI C
al er ts youwit havis ual and acoustic warning. #
Adjus tyo ur spee dand main tain asuit a‐
ble distance from theve hicle infront. Dr
iving andparking 16
1