ignition MERCEDES-BENZ E-CLASS CABRIOLET 2021 Owner's Guide

#
Ifth eve hicle still does notst ar tand the
Place theKey inthe Marked SpaceSee
Operator's Manualdisplaymessag ealso
appear sin themultifunc tiondispla y:star t
th eve hicle withth eSmar tKey inthemar ked
space (emergency operati on mod e)
(/ page 139).
% 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"
(/ page14 2).
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 2.
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 vehicle star ts howe ver,Smar tKey 1
mus tbe locat edinmar kedspace 2during
th eent 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.
R The fuel tank issu fficien tly full.
R The star terbatt eryis suf ficie ntly charge d. Dr
iving andparking13
9

#
Movethesteer ing wheel tothest ra ight -
ahead position. #
Selec tth espor tiestav ailable drive pr ogram
B orC(/ page15 0). #
Dea ctivateESP ®
(/ page 168). #
Depr essand hold thebr ak epedal firm lywith
yo ur leftfo ot . #
With your right foot ,full ydepr esstheaccel‐
er ator pedal. #
Afterno mor eth an five seconds, take your
lef tfo ot quickl yof fth ebr ak e, but keep the
acc elerat orpedal depresse d.
The vehicle pullsaway atmax imum acceler a‐
tio n. #
Swit chon ESP ®
once theaccelera tionproce‐
dur eis com plete.
Endin gop tim ized acceler ation #
Remo veyour foot from theacceler ator pedal. #
React ivat eth eES P®
.
% Afteryo upull away wit hop tim ized accelera‐
tio n,com ponentsof thedr ivet ra in can
becom eve ry hot,whic hmeans that opti‐ miz
edacc eleration values maybe reac hed
ag ain onlyafte ra fe w min utes. No
teson driving &
WARNIN GRisk ofacci dent dueto
object sin thedr iver's foot we ll
Obj ectsin thedr iver's foot we llma yim pede
pedal trav el or bloc kadepr essed pedal.
This jeopar dizestheoper ating androad
saf etyof theve hicle. #
Stow allobj ect sin theve hicle secur ely
so that they canno tget intoth edr iver's
fo ot we ll. #
Alw aysins tallth efloor mats securely
and asprescr ibed inorder toensur e
th at ther eis alw ayssuf ficie ntroom for
th epedals. #
Donotuse loose floor mats anddonot
place floor mats ontopof one another. &
WARNIN GRisk ofacci dent dueto inc or‐
re ct foot we ar
In cor rect foot we arinc ludes, forex am ple:
R Shoes withplat form soles
R Shoes withhigh heels
R Slipper s #
Alw ayswe arsuit able foot we arso that
yo ucan operat eth epedals safely. &
WARNIN GRisk ofacci dent ifth eignition
is switc hedoffwhile driving
If yo uswit choffth eignition whiledriving,
saf etyfun ction sar ere strict ed orno long er
av ailable.
Yo uwill need touse considerably morefo rc e
to steer and brak e, forex am ple. #
Donotswit choffth eignition whiledriv‐
ing. 14
2
Driving and parking

ECO
star 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, e.g. ast op
sign.
R The s symbol appears:theEC Ostar t/
st op funct ionisdeactiv ated orther eis amal‐
func tion.
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. ECO
displa yfunction The
ECOdispla ysummar izesyour 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 Drive wit hpar ticular care
R Followthege arshif tre comme ndations 14
6
Driving and parking

#
Keep theve hicle SmartKey out ofreac h
of childr en. Use
theDIRE CTSELECT leve rto switc hth e
tr ans missi on positio n.The current trans mis sion
po sitio nis displ ayed inthemultifunc tiondispla y. 005D
Park position
005E Reversege ar 005C
Neut ral
005B Drive po sitio n
En gaging reve rsege ar R #
Depr essthebr ak epedal andpush the
DIR ECT SELEC Tleve rupw ards pas tth efirs t
point ofresis tance.
En gaging neutr alN #
Depr essthebr ak epedal andpush the
DIR ECT SELEC Tleve rup ordown tothefirs t
point ofresis tance.
% Toshif tint oneutr al005C withth eignition on,
push theselect orleve rup ordown forse v‐
er al seconds tothefirs tpo int ofresis tance.
Sub sequently releasing thebr ak epedal will
allo wyo uto mo vetheve hicle freel y,e.g. topush
it or tow itaw ay.
Pr ocee das follo ws ifyo uwa nttheaut oma tic
tr ansm ission toremain inne utr al005C 005C,
evenif
th eignit ionisswitc hedoffor thedr iver' s
door isopened : #
Dep ress thebr ak epedal andengageneutral
005C when theve hicle isat ast ands till. #
Release thebr ak epedal. #
Switc hth eignition off.
% Ifyo uth en exitth eve hicle leaving the
Smar tKey intheve hicle, theaut omatic trans‐
mission remains inneutr al005C.
Eng aging parkpositio nP #
Obser vetheno teson par king theve hicle
(/ page15 7). #
Depr essthebr ak epedal untiltheve hicle is
at ast ands till. #
When theve hicle isat ast ands till,pr ess but‐
to n005D.
Whe nth etransmission positiondisplay
sho ws005D,th epar kposition iseng aged. Ifno
tra nsmiss ionposition display005D appear s,
secur eth eve hicle topreve ntitfrom rolling
aw ay.
% Dep endingonthesituation ,it ma yta ke a
shor ttime until005Diseng aged. Ther efor e,
alw ayspa yatt ention tothetra nsmiss ion
position display. 15
2
Driving and parking

Pa
rk position 005Diseng aged aut omatic allyif one
of thefo llo wing condition sis me t:
R Youswit choffth eignition whentheve hicle
is statio naryand thetransmission positionis
005B or005E.
R Youopen thedr iver's door when theve hicle
is at ast ands tillor when drivin gat ave ry low
speed andthetransmission positionis005B or
005E.
% Tomaneu verwit han open driver's door ,
open thedr iver's door while atast ands till
and engagetrans miss ionposit ion005Bor005E
ag ain.
Eng agin gdr ive posi tion D #
Depress thebr ak epedal andpush the
DIR ECT SELEC Tleve rdo wn pas tth efirs t
point ofresis tance.
Whe nth eaut omatic transmiss ionisin transmis‐
sion position 005B,itshif tsthege arsaut omat i‐
call y.This depends, amongother things ,on the
fo llo wing fact or s:
R The select eddrive pr ogr am
R The position oftheaccelera torpeda l R
The driving speed Manual
gearshif ting When
theaut omatic transmission isshif tedto
position 005B,youcan man uallyshif tit wit hth e
st eer ing wheel gearshif tpaddle. Ifper mitted, the
aut omat ictransm issionshif tsto ahigh eror
lo we rge ar depen dingon thesteer ing wheel
ge arshif tpaddle beingpulled.
Yo uha ve twoop tio ns tomanua lly shif tth eaut o‐
matic transmission :
R Temp orar yse tting
R Perm anen tse tting The
gearsshif taut omat icallywhen manualgear‐
shif tingis deac tivated.
Te mp oraryse tting: #
Toactiv ate: pul lst eer ing wheel gearshif t
paddle 1or2.
Man ualgearshif tingis act ivat ed fora shor t
time. Thetransmiss ionposi tion display
sho ws0063 and thecur rent gear.
% Howlon gth emanual gearshif tingst ay sacti‐
va tedis dependen ton various fact or s.
Ma nua lge arshif tingcan beaut omat ically
deac tivated inthefo llo wing cases :
R Changin gth edr ive pr ogr am
R Restar tin gth eve hicle
R When thetra nsmiss ionposition 005Bis
eng aged again
R Driving style #
Toshif tup: pull steer ing wheel gearshif t
paddle 2. #
Toshif tdo wn: pullsteer ing wheel gearshif t
paddle 1. Dr
ivin gand parking15
3

Glide
mode canalso bepreve 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 Fu
nction ofthe4MA TIC
4MA TICensures that all four wheel sar edr iven .
To ge ther wit hES P®
and 4ETS,4MA TICimprove s
th etra ction ofyour vehicle whene vera dr iven
whee lspins duetoinsuf ficie nttracti on.
If yo ufa ilto adap tyo ur drivin gst yle, 4MA TICcan
neit her reduce therisk ofan accident norover‐
ri de thelaws ofphysics. 4MA TICcannotta ke
acc oun tof road, weather and traf fic condi tions.
4MA TICisonly anaid. Youar ere sponsible espe‐
cially formaint ainingasaf edis tance from the ve
hicle infront, forve hicle speed, forbr aking in
good timeandforst ay ing inlane.
% Inwint ryroad con dition s,themaximum
ef fect of 4MA TICcan beachie vedonl yif yo u
use wint ertires (M+ Stir es), withsn ow
ch ains ifnec essar y. Re
fueli ng Re
fueli ngtheve hicl e &
WARNIN GRisk offire or explosion from
fuel
Fu els arehighly flammab le. #
Fire,open flames ,smo kingand creat ion
of spar ksmus tbe avo ided. #
Swit choffth eignition and,ifav ailable,
th est atio naryheat er,bef oreand while
re fuel ingtheve hicle. &
WARNIN GRisk ofinju ryfrom fuels
Fu els arepoisonous andhazar dous toyour
healt h. #
Donotsw allo wfuel orletit co me into
co ntact withsk in, eyes orclo thing. #
Donotinhale fuelvapor . #
Keep childr enaway from fuel. #
Keep door sand windo wsclos edduring
th ere fuel ingprocess.
If yo uor other people comeintocont actwith
fuel, obser vethefo llo wing: #
Imm ediat elyrinse fuelof fyo ur skin wit h
soap andwater. #
Iffuel comes intocont actwithyo ur
ey es, immediat elyrinse them thor‐
oughl ywit hclean water.Seek medical
att entio nimm ediately . #
Ifyo usw allo wfuel, seek medicalatten‐
tio nimm ediat ely. Do notind uce vomit‐
ing. #
Cha ngeimmedi ately out ofclo thing that
has com eint ocon tact with fuel . Dr
iving andparking 15
5

&
WARNIN GRisk offire and explosion due
to electr ostatic charge
Ele ctrostat icch arge can ignitefuel vapor . #
Beforeyo uopen thefuel filler cap or
ta ke hold ofthepum pnoz zle, touc hth e
me tallic vehicle body. #
Toavo idcreatin gano ther electr ostatic
ch arge ,do notget intoth eve hicle again
dur ing there fuel ingprocess. *
NO
TEDama gecau sed bythewr ong fuel Ve
hicles withaga soline engine:
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. Your
ve hicle issuit able foruse withE1 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. *
NO
TEDo notus ediese lto refuel vehi‐
cles withaga soline engine If
yo uha ve acc iden tally re fuel edwithth e
wr ong fuel:
R Donotswit chtheignition on.Other wise
fuel canentertheengine.
Ev en small amounts ofthewr ong fuel
could result indamag eto thefuel system
and theengine. Therepair costsarehigh. #
Consult aqu alif ied spec ialistwo rkshop. #
Have thefuel tank and fuellines
dr ained complet ely . *
NO
TEDama getothefuel system caused
by ove rfilled fueltank s #
Only fill th efuel tank unti lth epum p
noz zleswitc hesoff. *
NO
TEFuelma yspr ayout when you
re mo vethefuel pum pnoz zle #
Onlyfill th efuel tank unti lth epum p
noz zleswitc hesoff. Re
quirement s:
R The vehicle isunloc ked.
% Donotge tint oth eve hicle again during the
re fuel ingprocess. Other wise,ele ctrostatic
ch arge cou ldbu ild up again.
Obs erve theno teson oper ating fluids andfuel.
On lyrefuel withfuel that has atleas tth eoct ane
number specifiedintheinf ormation labelinthe 15
6
Driving and parking

#
Eng agetrans mis sion positio n005D inast atio n‐
ar yve hicle withth ebr ak epedal applied
(/ page15 2). #
Swi tchof fth eengine andtheignition by
pr essing button1. #
Release theser vice brak eslo wly. #
Getout oftheve hicle andlockit.
% When youpar kth eve hicle, youcan still
opera tetheside windo wsand thesof tto p
fo rapp roxima tely four min utes ifth edr iver's
door isclosed. Gar
agedoor opener Pr
og rammin gbutt onsfo rthe garage doo r
ope ner &
DANG ER Risk ofdeat hcause dby
ex haus tga ses
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealt h
and leads topoisonin g. #
Neverlea vetheengine or,if pr esent ,
th eauxiliar yheating running inan
encl osedspa cewithout sufficie ntventi‐
la tio n. &
WARNIN GRisk ofinju rywhen opening
or clos ingadoor withth ega rage door
opener
When youoper ateor program thedoor with
th eint egr ated garage door opener ,per sons
in thera ng eof mo vement ofthedoor may
become trapped orbe stru ck bythedoor . #
Alw aysmak esur eth at nobody iswit hin
th era ng eof mo vement ofthedoor . Onl
yoper ateth efo llo wing doorsusing the
ga rage door opener :
R Door swit hasaf etyst op and reve rsing fea‐
tur e
R Doorswhic hcon form tothecur rent U.S.
sa fety standar ds Re
quirement s:
R The vehicle hasbeen parkedoutside the
ga rage oroutside thera ng eof mo vement of
th edoor .
R The engine isswitc hedoff.
R The ignition isswitc hedon.
% The garage door opener function isalw ays
av ailable whentheignition isswitc hedon. Dr
iving andparking 15
9

#
Push handle 1.
The red0049 (USA)or0024 (Canada) indica‐
to rlam plig hts upintheins trument cluster.
% The electr icpar king brak eis onl ysecur ely
applied ifth eindicat orlam pis lit con tinu‐
ously .
Re leasing #
Swit chon theignition . #
Pull handle 1.
The red0049 (USA)or0024 (Canada) indica‐
to rlam pin theins trument clustergoes out.
Emer gency braking #
Press and hold handle 1.
As long astheve hicle isdriving, thePlease
Release ParkingBrak emessag eis displa yed
and there d0024 indicat orlam pflashes .
When theve hicle hasbeen brak ed toa
st ands till,th eelectr icpar king brak eis
applied. Thered0049 (USA)or0024 (Can‐
ada) indicat orlam plights upintheins tru‐
ment cluster. No
teson par king theve hicl efo ran extended
per iod If
yo ulea vetheve hicle parkedfo rlong erthan six
we eks,itma ysuf ferdama gethro ugh disus e.
The 12Vbatt eryma yalso beimpair edordam‐
ag ed byhea vydisc harging.
% Further information canbeobt ained ata
qu alif ied spec ialistwo rkshop. St
andb ymode (ext ens ion ofthe star terbat‐
te ry 's per iod out ofuse) St
andb ymode function
% This function isno tav ailable forall model s.
If standb ymode isact ivat ed, energyloss willbe
min imis eddur ing ex tende dpe riods ofnon- oper‐
ation.
St andb ymode isch aract erised bythefo llo wing:
R The star terbatt eryis preser ved.
R The maximum non-opera tionaltime appear s
in themedia display.
R The conn ection toonline services isint erru p‐
te d. R
The ATA(anti-t heftal ar m system) isno tav ail‐
able.
R The function forde tecting collisions ona
pa rked vehicle isno tav ailable.
If th efo llo wing condition sar efulf illed, standb y
mode canbeact ivat ed ordeac tivated usin gth e
multime diasystem:
R The engine isswitc hedoff.
R The ignition isswitc hedon.
Ex ceeding theve hicle's displayednon -opera ‐
tion altime maycause inconvenience, i.e.it can‐
no tbe guarant eedth at thest ar terbatt erywil l
re liabl yst ar tth eengine.
The star terbatt erymus tbe charge dfirs tin the
fo llo wing situat ions:
R The vehicle's non-oper ational timemustbe
ex tende d.
R The Batte ryCh arg eInsu fficie ntfor Stand by
Mod emes sage appear sin themedia display.
% Standb ymode isaut omat icallydeac tivated
when theignition isswitc hedon. Dr
iving andparking 16
3

R
Activati on byan abr uptst eer ing movement
dur ing asw erving maneu ver.
R Assi stanc edur ing swervin gand stra ight enin g
of theve hicle.
R React ion from aspee dof appr oximat ely
12 mp h(20 km/h) uptoaspee dof appr ox‐
imat ely43 mph(70 km/h).
Yo ucan preve nttheassis tance atanytime by
act ivel yst eer ing.
Cor nering function (onlyve hicl eswith Driv‐
ing Assistanc ePa ckag e)
If adang erofcoll ision from anoncoming vehicle
is de tected whe ntur ning across anoncomi ng
la ne, autonomo usbraki ng can beinitia tedat
speeds below9mp h(1 5 km/h) beforeyo uha ve
lef tth elane inwhic hyo uar edr ivin g. &
WARNIN GRisk ofacci dent despite Eva‐
si ve Steer ing Assis t
Ev asiv eSt eer ing Assis tcann otalw aysre cog‐
nize objectsorcom plex traf fic situ ations
cle arly. Mor
eover,th esteer ing suppor tpr ov ided by
Ev asive St eer ing Assis tis no tsuf ficie ntto
av oid acollision. #
Alw ayspa ycar eful attention tothetra f‐
fi c situ ation; donotre ly on Evasiv e
St eer ing Assis talone. #
Beprepar edtobrak eor sw erve ifnec ‐
essar y. #
End thesuppor tby act ivel yst eer ing in
non -critical situation s. #
Drive at an appr opriatespeed ifth er e
ar epedes trians close tothepat hof
yo ur vehicle. Sy
stem limit s
Fu llsy stem perform anc eis no tav ailable fora
fe w sec ond saf te rswitc hingontheignition or
af te rdr iving off.
If Ac tiveBr ak eAssi stisim pair edorinope rativ e
du eto amalf unction,the00C7 warning lam p
appear sin themultifunc tiondispla y. The
system maybe impair edorma yno tfunc ‐
tion ,par ticular lyin thefo llo wing situat ions:
R Insno w,rain, fog, hea vyspr ay,if th er eis
gl ar e, indir ect sunlight oringrea tly varying
ambien tlight .
R Ifth esensor sar edir ty,fo gg ed up, damag ed
or covered.
R Ifth esensor sar eim pair eddue tointerfer‐
ence from other radar sour ces, e.g.stro ng
ra dar reflect ions inpar king garage s.
R Ifaloss oftirepr essur eor afa ulty tirehas
been detected and displ ayed.
R Incom plextraf fic situ ations whereobject s
cann otalw aysbe clear lyidentif ied.
R Ifpedes trians orvehicles movequickl yint o
th esensor detection rang e.
R Ifpe destrians arehidde nby other object s.
R Ifth etypical outline ofapedes trian cann ot
be distinguished from thebac kground .
R Ifapedes trian isno tde tected assuch ,e.g.
due tospecial clothing orother object s.
R Ifth edr iver's seat beltisno tfa stened. Dr
iving andparking 18
9