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

No
teson theIns trum ent Displa yand on-
boar dcom puter &
WARNIN GRisk ofacci dent dueto an
In stru ment Displa ymalfu nction
If th eIns trument Displayhas failed ormal‐
func tioned,thefunc tion restrictions applying
to saf etyre leva nt systems areno tvisible.
The oper ating safetyof your vehicle maybe
im pair ed. #
Drive on car efull y. #
Have theve hicle checkedimmediat ely
at aqu alif ied spec ialistwo rkshop. &
WARNIN GRisk ofdist ra ction from infor‐
mati onsystems andcomm unication s
eq uipment
If yo uoper ateinf ormat ionand comm unic a‐
tio neq uipme ntintegratedin theve hicle
when driving, youwill bedistract ed from the
tr af fic situ ation. Thiscou ldalso cau seyouto
lose control of theve hicle. #
Onlyoper ateth is eq uipmen twhen the
tr af fic situ ation per mits. #
Ifyo ucan notbe sur eof this, stop the
ve hicle whilstpa ying attention toroad
and traffic condi tions andoperate the
eq uipment withth eve hicle statio nary. *
NO
TEMercede s-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. Yo
umus tobse rveth eleg alrequ iremen tsforth e
cou ntryin whi chyouar ecur rentl ydr ivi ng when
op erati ng theon- boar dcom puter.
The on-boar dcom putersho wsonlydispla ymes‐
sag esand warnings from spec ific systems on
th emultifunc tiondispla y.Yo umus tth er efor e
ensur eth at your vehicle isalw aysre liable.
If th eoper ating safetyof your vehicle is
im pair ed,parkth eve hicle immediat elyand
saf ely. Con tact aqu alif ied spec ialistwo rkshop. 21
8
Instrument Displayand on-boar dcom puter

Fu
ll-scr eenmenu s
Yo ucan displ aythefo llo wing menusfull-s creen
on theins trument display:
R Assist ance
R Trip
R Navigation #
Onthecor responding menu,usethelef t-
hand Touc hCon trol to scr olltotheend ofthe
lis t. #
Press thelef t-hand Touc hCon trol.
The selected men uwill bedispl ayedfull-
scr een. Ov
ervie wof displa yson themu ltifunct ion
disp lay
Dis playson themultifunc tiondispla y
u ActivePa rking Assistact ivat ed
(/ page21 3)
é Parking AssistPA RK TRONI Cdeac tiva ted
( / pag e21 0)
h Cruise contr ol(/ page17 1) ç
ActiveDis tance AssistDIS TRONI C
(/ page 174)
ê ActiveBr ak eAssi st(/ pag e19 0)
à ActiveSt eer ing Assis t(/ page18 1)
¬ ActiveTraf fic Ja m Assi st(/ pag e18 1)
00B0 Ac
tiveLa ne Keeping Assist(/ page19 7)
± ActiveLa ne Chang eAssi st(/ pag e18 4)
00D6 ECO
star t/ stop funct ion(/ page14 5)
00D9 HOLD
function (/page16 8)
00CE Ad
aptiveHig hbeam Assis t(/ page11 8)
Ad aptiveHig hbeam Assis tPlus
(/ page11 9)
Ve hicl eswith Traf fic Sign Assis t:De tected
ins tructi ons and traf fic sig ns (/ page 190).
Fo ran overvie wof theindicat orand warning
lam ps,see (/page392 ). Head
-upDispla y Fu
nction oftheHead -upDispla y *
NO
TEMercede s-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. The
Head-upDisp lay pr ojects thefo llo wing infor‐
matio nint oth edr iver's field ofvision abovethe
coc kpit, forex am ple:
R The vehicle speed
R Information from thena vig ation system
R Information from thedr iving systems and
dr iving safetysy stems
R Some warning mess ages
Depe ndingon theve hicle's equipment, differe nt
cont entcan besho wnintheth re ear eas ofthe
Hea d-up Display (/ page 223). 222
Instrument Displayand on-bo ardcom puter

Selec
tingwhat theHead -upDispla ysho ws (Ex
am ple)
1 Toswitc hth eHead-up Displayon/ off
2 Leftdispla yar ea
Na vig ation system
Av erag econ sum ption
G-me ter
3 Centraldispl ayarea
Spe edom eter
Se tspeed inthedr iver assis tance system,
e.g. cruise control
Wa rnings from driver assis tance systems,
e.g. distance warning 4
Right displa yar ea
Tr af fic Sign Assist
Assi stant displa y
5 Toadjus tth eposition ,br ightn essand lowe r
displa yar ea
6 Inde xpoint s
7 Lowe rdisp lay ar ea (exa mp le:leftdispla y
ar ea)
Disp lay ar eas 2to4 that areno tre qu ired can
be hidden .
% Inaudio mode, thest atio nnam eor trac kwill
be sho wntemp orarily when theaudio source
is being activelyoper ated. Inaddition, the
lat estcalls willbedispla yedwhen thete le‐
phon elis ton theIns trument Displayis
activ elyoper ated. #
Toselect adispla y:swipe upwards on the
lef t-hand Touc hCon trol. #
Press thelef t-hand Touc hCon trol. Swit
ching theHead -upDispla yon/of fvia the
mu ltim edia system Multi
media system:
4 © 5
Set ting s5
Quick Access #
Select HUD.
The Head-up Displayis activ ated. 22
4
Instrument Displayand on-boar dcom puter

R
Units fordis tance
R Softwareup dates
R Dat aim po rt/e xpor t
R PIN protect ion
R System Reset Inf
ormat iononimpor tant system updates Im
por tant system updat esma ybe neces saryfo r
th esecur ityofyour mult imed iasystem's data.
Ins tallth ese updat es,orelse thesecur ityofyour
mult imed iasystem cann otbe ensur ed.
A sy stem updat econ sistsof thre esteps:
R Downloading orcop ying ofthedat are qu ired
fo rins tallation
R Installation ofthedo wnloaded system updat e
R Activati on ofthedo wnloaded system updat e
by restar tin gth esy stem
% Ifaut omatic softwareupdat esareactiv ated,
th esy stem updat eswill bedownloaded auto‐
maticall y. The
multimedia system prov ides amess age
when asy stem updat eis available.
Yo uha ve thefo llo wing selectionoption s:
R Accept andInstall
The system updat ewill bedownloaded inthe
bac kground .
R Infor mat ion
In fo rm atio nabout thepending system
updat eis displa yed.
R Later
The system updat ecan bedownloaded man‐
uall yat alat er time.
Deep system updates
Dee psy stem updat esaccess vehicle orsystem
se ttings andcanther efor eonl ybe car ried out
when theve hicle isstatio naryand theignition is
switc hedoff.
If th edo wnload ofadeep system updat eis com‐
ple tedand thedo wnloaded system updat eis
re ady forins tallation ,yo uwill beinformed ofthis
af te rth ene xt ignition cycle, forex am ple. %
Park theve hicle safely inasuit able location
bef orest ar tin gth eins tallation .
Re quiremen tsforth eins tallation :
R The ignit ionisswitc hedoff.
R Notesand warnings have been read and
acc epted.
R The elect ric pa rking brak eis applied.
If all requ iremen tshave been fulfilled, thedo wn‐
loaded system updat eis ins talled. Themultim e‐
dia system cann otbe oper ated while thedo wn‐
loaded system updat eis being installed and
ve hicle functionsarere strict ed.
If er ro rs should occurduring theins tallation ,th e
multime diasystem automatic allyatt em ptsto
re stor eth epr ev ious version. Ifre stor ation ofthe
pr ev ious version isno tpossible ,a symbol
appear son themedia display.Con sult aqu ali‐
fi ed specialis two rkshop toresolv eth epr oblem. 232
MBUX multimedia system

Connect
ingprev iousl yaut hor ized Bluetooth®
audio equipment #
Select aBlue tooth®
audio devic efrom the
lis t.
The connection isbeing established. Ov
ervie wof thesym bols andfunctions inthera dio menu Symbo
lD esignation Function
© HomeSelecttoretur nto thehome screen.
j MessagingSelecttocal lup mess aging.
00F5/00F6 Skip
forw ards/ backS electtoskip tothene xt or tothepr ev ious statio n.
Z Setting sS electtohave further option ssho wn. Settings canbemade tothefo llo wing addi‐
tion alfunc tions,forex am ple:
R Navig ation andtraf fic annou ncements
R Freq uency fix func tion
R Radio additional text
R Emerg encywarnings
The setting option sar ecoun try- dependen t. 258
MBUX multimedia system

Emer
gency Re
mo ving the safetyve st The
safetyve stsar elocat edinthestow agecom ‐
par tment sin thedr iver and front passeng er
door . #
Toremo ve:pu llou tsa fety vest bag byloop. #
Open thesaf etyve st bag and pulloutthe
saf etyve st. 1
Maximum numberofwa shes
2 Maximum wash temp eratur e
3 Donotbleac h
4 Donotiron 5
Donottumble dry
6 Donotdr yclean
7 Class 2saf etyve st
The requ iremen tsdef ined bytheleg alstandar d
ar eon lyfulfille d ifth esaf etyve st isthecor rect
size andisful lyclos ed.
The safetyve st mus tbe replaced inthefo llo wing
situat ions:
R The reflect ive st rips aredamag edordir ty
R The maximum permissible numberofwa shes
is exceed ed
R The fluor esc ence has faded Wa
rning triang le Re
mo ving the warning triang le #
Push both sides ofwa rning triang leholder
1 inthedir ect ion ofthear row and open it. #
Remo vewarning triang le2. Br
eakdo wnassis tance 27
9

Se
tting upthewa rning triang le #
Foldside reflect ors1 upw ards toform atri‐
ang leand attachat theto pusing upper
pr ess-s tud2. #
Foldlegs 3down and outtotheside. Fi
rs t-aid kit(sof t-si ded) overview Fir
st-ai dkit (softsided) 1isin thetrunk inthe
lef t-hand orright-h andstor ag ene t,depending
on themodel. Flat
tire No
tesin theeve ntofaflat tire &
WARNIN GRisk ofacci dent dueto aflat
tir e
A flat tirese verely affects thedr iving charac‐
te rist ics aswellas thesteer ing and braking
of theve hicle.
Ti re swith outrun-flat charact eristics : #
Donotdr ive wit haflat tire. #
Chan getheflat tireimm ediat elywit han
emer gency sparewheel orspar ewheel.
Alt ernat ivel y, consu ltaqu alif ied spe‐
cialis two rkshop.
Ti re swith run-flat charact eristics : #
Obse rveth einf ormation andwarning
no teson MOExt ended tires (run-f lat
tir e). 280
Breakdo wnassis tance

If
apr essur eloss warning mess ageappear sin
th emultifunc tiondispla y,proceed asfollo ws :
R Chec kth etir es fordama ge.
R Ifdr iving on,obser vethefo llo wing notes.
Dr iving distance possible inemer gency
mode afte rthe pres sur elo ss wa rning: Load
condit ion Driving distance pos‐
sible inemer gency
mode
Pa rtiall yladen 50miles (80km)
Fu lly laden 19mile s(30 km) The
driving distance possi ble in eme rgency
mod ema yva ry dependin gon thedr iving style.
Obser vethemaximum permissible speedof
50 mph(80 km/h).
If atir ehas gone flat and cannotbe replaced
wit han MOEx tende dtir e, youcan useast and‐
ar dtir eas ate mp orarymeasur e. TIREFIT
kitstorage location The
TIREF ITkit islocat edunder thetrunk floor . 1
Tire seala ntbottle
2 Tire inflation compressor
Depe ndingon themodel, theTIREFI Tkit may
also belocat edinother places underthecar go
com partmen tfloor . Using
theTIR EFIT kit Re
quirement s:
R Tire seala ntbottle and tireinf lation compres‐
sor (/ page282). R
TIREFIT sticke r
R Gloves(depending ontheve hicle equipment)
Yo ucan useTIRE FITtir esealan tto seal perfora ‐
tio nda ma geofup to0.16 in(4 mm), particular ly
th ose inthetir econ tact surface. Youcan use
TIRE FITin out side temp eratur esdown to-4°F
(-20° C). &
WARNIN GRisk ofacci dent whenus ing
tir esea lant
The tiresea lant ma ybe una ble to seal the
tir epr op erly,es pe cia llyinthefo llo wing
cases :
R Ther ear elar ge cuts orpunctur esinthe
tire (larg erthan damag epr ev iousl ymen ‐
tion ed)
R The wheel rims have been damag ed
R Afterjour neys wit hve ry low tirepr essur e
or wit hflat tires #
Donotcon tinue drivin g. #
Con sult aqu alif ied spec ialistwo rkshop. 282
Breakdo wnassis tance

&
WARNIN GRisk ofexplosion during
ch argin gpr oce ssand star tin gassis tance
Dur ing thech argin gpr oce ssand star tin g
assis tance, thebatt eryma yre lease anexplo‐
siv ega smixtur e. #
Avoid fire ,open flames ,cr eat ing spar ks
and smoking. #
Mak esur eth er eis suf ficie ntventil a‐
tio n. #
Donotle an ove ra batt ery. &
WARNIN GRisk ofexplosion from afro‐
zen battery
A disc hargedbatt eryma yfreeze attemp era‐
tur es slightl yabo veorbelo wfreezing point.
Dur ing star tin gassis tance orbatter ych arg‐
ing ,bat tery gascan bereleased. #
Alw aysallo wabatt eryto thaw before
ch argin git or per form ing star tin gassis ‐
ta nce. If
th eindicat or/warning lampsintheins trument
clus terdo notlig ht up atlow temp eratur es,itis
ve ry likelyth at thedisc hargedbatt eryhas fro‐
zen .In this case youma yne ither jump-start the
ve hicle norcharge thebatt ery.
The service life of abatt eryth at has been
th awe dma ybe dramaticall yshor tened .The
st ar tin gch aract eristic sma ybe impair ed,espe ‐
ciall yat low temp eratur es.
It is recomme ndedthat youha ve ath aw ed bat‐
te ry checkedat aqu alif ied spec ialistwo rkshop.
All vehicl es
* NO
TEDama gecau sed bynum erou sor
ex tende datt em ptsto star tth eengine Nu
me rous orextende datt em ptsto star tth e
engine maydamag eth ecat alytic converter
due tonon-co mbusted fuel. #
Avoid numer ousand extende datt em pts
to star tth eengine. Obser
vethefo llo wing pointsdur ing star tin g
assis tance and when chargin gth ebatt ery:
R Onlyuse undamag edjum per cables/c harg‐
ing cables withasuf ficie ntcross -secti onand
insu late dte rm inal clam ps.
R Non-insulat edpar tsof thete rm inal clam ps
mus tno tcom eint ocon tact with other metal
par tswhile thejum per cable/c harging cable
is con nect edtothebatt ery/jum p-start con‐
nectio npoi nt.
R The jumper cable/c harging cable mustno t
com eint ocon tactwi th anypar tswhic hma y
mo vewhen theengine isrunning .
R Alw aysmak esur eth at nei ther youno rth e
batt eryis elect rostatic allych arge d.
R Keep away from fire and open flames .
R Donotlean overth ebatt ery.
Obser vetheadditional follo wing pointswhen
ch argin gth ebatt ery:
R Onlyuse batterych arge rs tested and
appr oved forMer cedes-Benz.
R Read thebatt erych arge r's oper ating instruc‐
tions beforech argin gth ebatt ery. Br
ea kdo wnassista nce 28
9

pr
essur ete lltale when oneormor eof your
tir es issign ifican tly und erinf lated. Accor d‐
ing ly,if th elow tirepr essur ete lltale illumi‐
nat es, yousho uld stop and checkyo ur tires
as soo nas poss ible, andinflateth em tothe
pr oper pressur e.Driving onasignif icantly
under inflated tirecauses thetir eto ove rheat
and canlead totirefa ilur e.Un der inflation
also reduces fuelefficie ncy and tiretrea d
li fe ,and mayaf fect theve hicle's handling
and stopping ability.Please note that the
TPMS isno ta subs titutefo rpr oper tiremain‐
te nance ,and itis thedr iver's responsibili ty
to maint aincorrect tirepr ess ure, eve nif
und erinf latio nha sno tre ac hed theleve lto
tr ig ge rill umina tionoftheTPMS low tirepr es‐
sur ete lltale.
Yo ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atewhen
th esy stem isno toper ating proper ly.The
TPMS malfunct ionindicat oriscombin edwith
th elow tirepr essur ete lltale. When thesy s‐
te m detects amal functi on,theindicat or
lam pwill flash forapp roxima tely amin ute and
then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gas themalfunct ion
ex ists.
When themalfunct ionindicat orisillumina‐
te d, thesy stem mayno tbe able todetect or
sig nal low tirepr ess ureas intende d.TPM S
mal functi onsmayoccu rfo ra va riet yof rea‐
son s,inc ludin gth eins tallation ofinc om pati‐
ble replacemen tor alternat etir es orwheels
on theve hicle that prev ent theTPMS from
func tioningproper ly.
Alw aysch eckth eTPMS malfunct iontelltale
af te rre placing oneormor etir es orwheels
on your vehicle toensur eth at there place‐
ment oralternat etir es and wheels allowthe
TPMS tocontinu eto function proper ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es installed ontheve hicle
by means ofatir epr essu resensor .
The tirepr essur eand thetir ete mp eratur e
appear intheon- boar dcom puter(/ page305). If
th er eis asubs tantia lpr ess ureloss orifth e
tir ete mp eratur eis exc essiv e,youwill bewarned
in thefo llo wing ways:
R viadisp lay messa ges(/ page385).
R viathe0077 warning lam pin theins trument
clus ter(/ page405)
The tirepr essu remonit oring system isonl yan
aid. Itis thedr iver's responsibili tyto setth etir e
pr essur eto there comme ndedcoldtirepr ess ure
su itab leforth eoper ating situation .
In mos tcases, thetir epr essur emonit oring sys‐
te m wil lau tomatical lyupd ateth ene wrefere nce
va lues afte ryo uha ve chang edthetir epr essur e.
Yo ucan ,ho we ver,also updat eth ere fere nce val‐
ues byrestar tin gth etir epr essur emonit oring
sy stem manuall y(/ page405).
Sy stem limit s
The system maybe impair edorma yno tfunc tion
par ticular lyin thefo llo wing situat ions:
R The tirepr essur ehas been setinc orrectly
R Sud den press urelos scau sed byafo re ign
obje ctpene tratin gth etir e, forex am ple 30
4
Whee lsand tires