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

#
Press the push button on the device tobe
connected (see the manufacturer's operating
inst ructions). #
Select Continue .
Connecting using a secur
Connecting using a secur itykey
ity key #
Select Connect device to vehicle hotspot.
A secu rity key is displa yed. #
Select theve hicle from the device tobe con-
nected. The vehicle is displ ayed with the
DIRECT-MBUX XXXXX network name.#
Enter the security key which is shown in the
media display on the device tobe connected. #
Con/rm the entr y.
Connecting using NFC
Connecting using NFC #
Select Connect via NFC. #
Activate NFC on the mobile device (see the
manufacturer's operating instructions). #
Hold the device tobe connected at theve hi-
cle's NFC inter face. #
Select Finished.
The mobile device is now connected tothe
multimedia system hotspot via NFC. Gener Gener
ating a ne ating a ne w secur
w securitykey
ity key #
Select Vehicle hotspot. #
Select Generate security key.
A connection will be established wi th the
ne wly created security key. #
T
To sav
o sav e a secur
e a secur itykey
ity key :
:select Save.
When a new security key is sa ved, all existing
Wi -Fi connections are then disconnected. If
th eWi -Fi connections are being re-estab-
lished, the new security key must be en tere d. Syst
Syst
em language
em language N
No
ot
tes on t
es on t he syst
he syst em language
em language
This function allo wsyouto determ ine the lan-
guage forth e menu displa ysand the navigation
announcements. The selected language a.ects
th ech aracters available for entr y.The navigation
announcements are not available in all languages.
If a language is not available, the navigation
announcements will be in English. Se
Se tting t
tting t he syst
he syst em language
em language
Multimedia system:
4 © 5
Settings 5
System
5 ® Language #
Set the language.
% Ifyo u are using Arabic map data, thete xt
information can also be shown in Arabic on
th e navigation map. Todo so, select 

#
Ensure there is su1cient ground clear-
ance between the underbody and the
guide rails of the car wash. #
Ensure that the clearance width of the
car wash, in particular the width of the
guide rails, is su1cient. To
avo id damage toyour vehicle when using a car
wa sh, ensu rethefo llowing beforehand:
R toavo id possible water ing ress in theve hicle,
it is preferable touse car washes which allow
th e high-pressure pre-cleaning tobe deactiva-
te d (speci/cation forth e cabriolet prog ram).
R avoid any hot-wax treatment.
R make sure that the wind de0ector on the wind-
screen has been retracted.
R Active Distance Assist DISTRONIC is deactiva-
te d.
R The HOLD function is switched o..
R The 360° Camera or there ve rsing camera is
switched o..
R the side windo wsand soT top are closed com-
ple tely. R
The blo werfo rth eve ntilation and heating is
switched o..
R the windscreen wiper switch is in position g.
R The key is at a minimum dis tance of 3 m away
from theve hicle. Otherwise the boot lid could
open unintentionall y.
R For car washes with a con veyor system:
- neutral iis engaged.
- Ifyo uwo uld like tolea vetheve hicle while
it is being washed, make sure theke y is
located in theve hicle. The park position
j isotherwise automatically engaged.
% If, aTer the car wash, youre mo vethewax
from the windscreen and wiper rubbers, this
will pr event smearing and reduce wiper noise. Inf
Inf
or
ormation on using a high-pr
mation on using a high-pr essur
essure cleaner
e cleaner &
W
WARNING
ARNING Risk of an accident when using
high-pressure cleaners with round-spr ay
nozzles
The water jet can cause extern ally invisible
damage.
Components damaged in this wa y may un ex-
pectedly fail. #
Do not use a high-pressure cleaner with
round-spr aynozzles. #
Have damaged tyres or chassis parts
re placed immediatel y. To
avo id damage toyour vehicle, obser vethefo l-
lowing when using a high-pressure cleaner:
R The key is at a minimum dis tance of 3 m away
from theve hicle. Otherwise the boot lid could
open unintentionall y.
R Maintain a distance of at least 30 cm tothe
ve hicle.
R V Vehicles wit
ehicles with decor h decorativ
ative f
e foil:
oil: Parts of your
ve hicle are co vered with a decorative foil. 306
306
Maintenance and care

F
F
r
req
eq uency band
uency band Maximum tr
Maximum transmis-
ansmis-
sion output
sion output
trunked radio system/
Te tra
380 - 460 MHz 10 W
70 cm frequency band
420 - 450 MHz 15 W
Tw o-w ayradio
(2G/3G/4G) 10 WThe
following devices can be used in theve hicle
without restrictions:
R two- wayra dios with a maximum transmission
output of up to100 mW
R two-w ayradios with transmitter frequencies in
th e 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(trunked radio system/T etra)
R mobile phones (2G/3G/4G) There are no
restrictions when positioning the
aerial on the outside of theve hicle forth efo llo w-
ing frequency bands:
R trunked radio system/T etra
R 70 cm frequency band
R 2G/3G/4G R R
egulat egulat or
ory r
y r adio
adio identi/cation
identi/cation and not
and notes
es R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation of small com
of small compo-
po-
nents
nents Manufacturer information about
radio-based vehi-
cle components can be found using thekey
phrase "Regulatory radio identi/cation" in the Dig-
ital Operator's Manual in theve hicle, on the inter-
net and in the app. R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation – Indonesia
– Indonesia Manufacturer information about
radio-based vehi-
cle components can be found using thekey
phrase "Regulatory radio identi/cation – Indone-
sia" in the Digital Operator's Manual in theve hi-
cle, on the internet and in the app. %
These are not small components. Information
about small components can be found using
th eke y phrase "Regulatory radio identi/cation
of small components". F F
urt
urt her
her com
com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation Fu
rther component-speci/c information can be
fo und using theke y phrase "fur ther component-
speci/c information" in the Digital Owner's Man-
ual in theve hicle, on the internet and in the app. Te
ch nical data
355
355

K
K
e
ey
y Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Á
Replace key *H
aveth eke yre placed. #
Consult a quali/ed specialist workshop.
Á
Change key batteries *T
hekey battery is dischar ged. #
Replace the battery (/ page 76).
Á Key not detected (white dis-
play message) *T
hekey is cur rently unde tected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot for starting with theke y (/ page 155). Display messages and
warning/indicator lamps
375
375

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Á
Key not detected (red dis-
play message) *T
hekey cann otbe de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you switch o. theve hicle:
R You can no longer start theve hicle.
R You cannot centrally lock theve hicle. #
Ensu rethat theke y is in theve hicle.
If th eke y de tection function has a malfunction due toa st rong radio signal source: #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Place theke y in the slot for starting the engine with theke y (/ page 155).
Á Key being initialised Please
wait *T
hevehicle is processing in order to teach in the new key. #
Wait until processing is comple te.
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot for starting the engine with theke y (/ page 155). 376 376
Display messages and
warning/indicator lamps

Opening dimensions.............................. 367
Boo
Boo t separ
t separ at
ator
or
Closing................................................... .87
Opening.................................................. .87
Br
Br ak
ak e Assis
e Assist Syst t System
em
see BAS (Brake Assist System)
Br
Br ak
ak e
e0uid
0uid
No tes..................................................... 365
Br
Br ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion).......................................................1 88
Br
Br ak
ak es
es
ABS (Anti-lock Braking System).............. 185
Ac tive Brake Assist................................. 205
Ad aptive brake lights.............................. 190
BAS (Brake Assist System).................... .186
Driving tips............................................ 158
EBD (Electronic Brake forc e Distribu-
tion).......................................................1 88
HOLD function....................................... 188
Limited braking e.ect (salt-treated
ro ads)................................................... .158
Ne w/replaced brake linings/brake
discs...................................................... 156 Ru
nning-in no tes.................................... 156
Br
Br aking assist aking assist ance
ance
see BAS (Brake Assist System)
Br
Br eakdo
eakdo wn
wn
Overvi ewofthe help functions................. 16
To w- starting........................................... 332
To wing away.......................................... 328
Tr anspo rting theve hicle........................ .330
Wheel chang e........................................ 346
Br
Br ea kdo
eakdo wn
wn
see Flat tyre
Butt
Butt ons
ons
St eering wheel....................................... 249 C
C
Calls
Calls Mercedes me......................................... 277
Camera
Camera Information............................................ 183
Camera
Camera see 360° Camera
see Dashcam
see Reversing camera Car
key
Car key
see Key
Car w Car w ash
ash
see Care
Car w
Car w ash (car
ash (car e)
e)............................................ 305
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 271
Care
Care 360° camera......................................... 311
Air-water duct........................................ 305
Automatic car wash.............................. .305
Carpet................................................... 312
Decorative foil........................................ 308
Display................................................... 312
Draught stop.......................................... 310
Exterior lighting...................................... 311
Fo lding draught stop.............................. 310
Head-up display..................................... 312
High-pressure cleaner............................3 06
Pa int...................................................... 307
Plastic trim............................................3 12
Re alwo od/trim elements..................... .312
Re versing camera..................................3 11
Ro of lining............................................. 312 Index
449 449

¯
AdBlue system fault Engine
start not possible................................... 426
¯ AdBlue system fault See Own-
er's Manual............................................ 425
5 Add 1 litre engine oil when next
re fuelling ............................................... 427
é ATTENTION ASSIST inoperati ve..... 399
é ATTENTION ASSIS T:Take a
break!.................................................... 399
: Automatic driving lights inoper-
ative...................................................... 379
Á Change key batteries .................... 375
J Check brake 0uid le vel.................. 398
5 Check eng. oil le v.when next
re fuelling ............................................... 427
ï Check trailer hitch lo ck(white
display message) .................................... 384
h Check tyre(s) ................................ 420
! Clean the fuel /lter....................... 390
J Close boot separator .................... 378 ÿ
Coolant Stop vehicle Switch
engine o............................................... 389
! currently una vailable See Own-
er's Manual............................................4 11
÷ currently una vailable See Own-
er's Manual............................................4 12
5 Engine oil le vel cannot be meas-
ured....................................................... 429
5 Engine oil le velRe duce oil le vel..... 428
5 Engine oil le velSt op vehicle
Switch engine o.................................... 428
5 Engine oil pressure Stop Switch
o. engine.............................................. 429
ä Fault Drive at max. 80 km/h ......... 409
6 Front leT malfunction Consult
wo rkshop (e xample)...............................3 72
_ Front leT seat backrest not
loc ked (e xamp le).................................... 387
& inoperative Battery low................. 383
& inoperative Refuel vehicle............. .383 &
inoperative See Owner's Man........ 382
! inoperative See Owner's Manual.. .412
÷ inoperative See Owner's Manual.. .413
T inoperative See Owner's Manual.. .414
G Inoperative................................... 415
: Intelligent Light System inopera-
tive........................................................ 380
Á Key being initialised Please wait.... 376
Á Key not de tected (red display
message).............................................. .376
Á Key not de tected (white display
message).............................................. .375
: LeT dipped beam (e xample).......... 379
6 LeT windowbag malfunction
Consult workshop (e xample).................. 372
¢ Lowe ring....................................... 410
: Malfunction See Owner's Man-
ual ......................................................... 379
ð Maximum speed exceeded ............ 402
Ø ................................................... .424 Index
453 453

ç
O................................................ .401
ë O.................................................3 98
K Open/close soT top comple tely.... 378
! Parking brake See Owner's
Manual..................................................3 94
É Please reduce speed .................... .410
Ý Please wait 48 V battery charg-
ing......................................................... 418
h Rectify tyre pressure ..................... 421
Ø Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 424
! Release parking brake ...................397
¸ Replace air cleaner ....................... 391
Á Replace key.................................. 375
8 Reser vefuel le vel.......................... 390
6 Restraint sys. malfunction Con-
sult workshop ....................................... .372
# See Owner's Manual..................... 416
K SoTtop lo wering........................... 377 K
SoTtop Operation only up to
60 km/h................................................ 377
Ù Steering malfunction Increased
ph ysical e.ort See Owner's Manual....... 385
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 386
# Stop vehicle Lea veengine run-
ning ....................................................... 417
# Stop vehicle See Owner's Man-
ual......................................................... 417
É Stop vehicle Vehicle too low .......... 409
ç suspended .................................... 400
: Switch o. lights............................ 380
: Switch on headlamps .................... 380
á temp orarily una vailable Camera
view restric ted....................................... 408
¸ temp orarily una vailable Sensors
dirty....................................................... 407
Ø Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 424 +
Top up coolant See Owner ’s
Manual.................................................. 389
¥ Top up washer 0uid...................... .388
! Turn on the ignition torelease
th e parking brake ................................... 397
d Vehicle is operational Switch o.
ignition before exiting............................. 383
É Vehicle rising Please wait.............. 410
É Vehicle rising ................................ 410
h Warning tyre defect....................... 421
h Wheel sensor(s) missing ................ 420
K While stationar y,apply the
brake before operating the soT top........ 377
Ø XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 425
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 405
Ac tive Blind Spot Assist inoperative........ 406 454 454
Index

Fr
ont-passenger airbag disabled See
Owner's Manual .................................... .373
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .373
Hazard warning lamps malfunctioning .... 382
Head-up display cur rently una vailable
See Owner's Manual.............................. 385
Head-up display inoperative ...................385
Limiter inoperative................................. 400
Limiter passive....................................... 400
Mo tor can be star ted again .................... 419
N permanently active Risk of vehicle
ro lling....................................................3 92
Only select Park (P) when vehicle is
stationary.............................................. 391
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 411
Place theke y in the mar ked space
See Owner's Manual.............................. 376 PRE-SAFE inoperative See Owner's
Manual.................................................. 374
Re duce speed........................................ 422
Re versing not poss. Consult workshop ... 393
Risk of vehicle rolling Driver door
open and transmission not in P .............. 392
Ru n Flat Indica tor inoperative................. 423
Speed limit (winter tyres) XXX km/h .......402
St op vehicle Lea veengine running
Wa itTransmission cooling ......................393
To shiT out of P or N,depress brake
and start engine.................................... .391
To switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 388
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 404
Tr a1c Sign Assist inoperative................. 404
Tr ansmission Malfunction Stop............... 393 Ty
re press. monitor cur rently una vaila-
ble......................................................... 419
Ty re press. monitor inoperative .............. 419
Ty re press. monitor inoperative No
wheel sensors ........................................ 420
Ty re pressure Check tyres ...................... 422
Ty re(s) ove rheated .................................. 422
Wi per malfunctioning .............................388
Wi thout changing gear, consult work-
shop ...................................................... 392
Dist Dist ance contr
ance contr ol
ol
see Active Distance Assist DISTRONIC
DIS
DIS TR
TRONIC
ONIC
see Active Distance Assist DISTRONIC
Door
Door Additional door loc k................................. 77
Locking/unlocking (emer gency key)........ .81
Opening (from inside).............................. .78
Po we r closing function............................. 80
Unlocking (from inside)............................ 78
Door contr
Door contr ol panel
ol panel......................................... 14 456
456
Index

E
E
E10
E10.............................................................. 359
Easy entr
Easy entr y f
y feature
eature
Fu nction/no tes...................................... 112
Setting................................................... 113
Easy e Easy e xit f xit featu re
eature
Fu nction/no tes...................................... 112
Setting................................................... 113
EBD (Electr
EBD (Electr onic Br
onic Brak
ake f
e f or
orce Dis
ce Dis tr
tribution)
ibution)
Fu nction/no tes...................................... 188
EC
EC O Assist
O Assist
Fu nction/no tes...................................... 163
EC
EC O display
O display
Fu nction................................................ 163
EC
EC O st
O st ar
ar t/st
t/st op function
op function
Switching o./on.................................... 162
Electr
Electr ic par
ic parking br
king br ake
ake
Applying automaticall y........................... 180
Applying/releasing manually.................. 182
Emer gency braking................................ 182
Re leasing automaticall y.......................... 181
Electr
Electr ical fuses
ical fuses
see Fuses Electr
Electr
omagne
omagne tic com
tic compatibility
patibility
Declaration of conformity........................ .24
Electr
Electr onicSt
onic Stability Pr
ability Pr ogr
ogram
am
see ESP ®
(Elect ronic Stability Prog ram)
Emerg
Emerg ency
ency
Fire extinguisher.................................... 316
Fi rs t-aid kit (soT sided).......................... 316
Overview of the help functions.................16
Re moving thewa rning triangle............... 315
Saf etyve st............................................. 315
Setting up thewa rning triangle............... 316
Emerg
Emerg ency br
ency br aking
aking...................................... 182
Emerg
Emerg ency br
ency br aking
aking
see BAS (Brake Assist System)
Emerg
Emerg ency call
ency call
see Me rcedes-Benz emer gency call system
Eme rg
Emerg encykey
ency key
Inserting/ removing.................................. 76
Locking/unlocking the doors................... 81
Emerg
Emerg ency oper
ency oper ation mode
ation mode
St arting theve hicle............................... .155
Emerg
Emerg ency spar
ency spar e wheel
e wheel
No tes..................................................... 351 Engine
Engine
Engine number....................................... 356
St arting (emer gency ope ration mode ).... 155
St arting (Remo teOnline)........................ 156
Engine data
Engine data Displaying.............................................. 166
Engine electr Engine electr onics onics
No tes..................................................... 353
Engine number
Engine number ............................................. 356
Engine oil
Engine oil Additives................................................ 363
Capacity................................................ 364
Checking the oil le vel using the on-
board computer..................................... 301
MB-F reigabe or MB-Appr oval.................. 364
Quality................................................... 364
To pping up............................................ .302
ERA
ERA -GL -GLON
ONASS tASS t es
est modet mode
St arting/ending.................................... .289
Err
Err or message
or message
see Display message
ESC (Electr
ESC (Electr onicSt
onic Stability Contr
ability Contr ol)
ol)
see ESP ®
(Elect ronic Stability Prog ram) 458
458
Index