charging MERCEDES-BENZ E-CLASS CABRIOLET 2021 User Guide

R
Always make sure that nei ther you nor the bat-
te ry is electrostatically charge d.
R Keep awa y from /re and naked 0ames.
R Do not lean overth e batter y.
Obser vethe additional following points when
ch arging the batter y:
R Only use battery charge rs tested and
appro vedfo r Mercedes-Benz.
R Read the battery charge r's operating inst ruc-
tions before charging the batter y.
Obser vethe additional following points during
starting assistance:
R Starting assis tance may only be pr ovided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
R The vehicles must not touch.
R V
V ehicles wit
ehicles wit h a pe
h a petr
trol engine:
ol engine: jump-start the
ve hicle only when the engine and exhaust sys-
te m are cold. S
S
t
tar
ar ting assist
ting assist ance and c
ance and c har
harging t
ging t he 12 V batt
he 12 V batt ery
ery R R
eq eq uir
uir ements:
ements:
R The vehicle is secured with the electric par k-
ing brake.
R V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
transmission is in position j.
R The vehicle and all elect rical consume rsare
switched o..
R The bonnet is open. Example: engine compartment
#
Slide co ver1 of positive contact 2onthe
jump-starting connection point in the direction
of the ar row. #
Connect positive contact 2onyour vehicle
to the positive term inal of the donor battery
using the jump lead/charging cable. Alw ays326
326
Breakdown assistance

begin with positive contact
2onyour own
ve hicle /rst. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:startthe engine of
th e donor vehicle and run at idle speed. #
Connect the negative term inal of the donor
battery and ear thpoint 3ofyour ow nve hicle
by using the jump lead/charging cable. Begin
with the donor battery /rst. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:startthe engine of
yo ur ow nve hicle. #
Dur
During t
ing t he c
he char
harging pr
ging pr ocess:
ocess: startthech arg-
ing process. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:letthe engines run
fo r se veral minutes. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:before disconnect-
ing the jump lead, switch on an electrical con-
sumer on your ow nve hicle, e.g. there ar win-
dow heater or lighting.
When the starting assistance/charging process is
comple te, per form thefo llowing steps: #
Firs t, re mo vethe jump lead/charging cable
from ear thpoint 3and the negative term inal of
the donor batter y,then from positive con-
ta ct 2 and the positive term inal of the donor
batter y.Begin ea chtime with the contacts on
yo ur ow nve hicle /rst. #
ATer removing the jump lead/charging cable,
close co ver1 of positive contact 2.
Fu rther information can be obtained at a quali/ed
specialist workshop. R
R
eplacing t
eplacing t he 12 V batt
he 12 V batt ery
ery #
Obser vethe no tes on the 12 V battery
(/ page 322).
Mercedes-Benz recommends that you ha vethe
12 V battery replaced at a quali/ed specialist
wo rkshop, e.g. at a Mercedes-Benz Se rvice
Centre.
Obser vethefo llowing no tes if youwa nttoreplace
th e battery yourself:
R Alwaysre place a faulty battery with a battery
which meets the speci/c vehicle requ ire-
ments. The
vehicle is equipped with an AGMtech nol-
ogy bat tery (Absorbent Glass Mat) or a lith-
ium-ion batter y.Fu llve hicle functionality is
only guaranteed with an AGM bat tery or lith-
ium-ion batter y.Fo r saf etyre asons, Mercedes-
Benz recommends that you only use batteries
which ha vebeen tested and appro vedfo ryo ur
ve hicle byMercedes-Benz.
R Carryove r de tach able parts, such as vent
hoses, elbow /ttings or term inal co vers from
th e battery being replaced.
R Make sure that theve nt hose is alw ays con-
nected tothe original opening on the side of
th e batter y.
Fi t any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
R Make sure that de tach able parts are recon-
nected in the same way. Breakd
own assistance
327 327

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Û
48 V battery See Owner's
Manual *T
he 48 V on-board elect rical system has function restrictions.
Comfort functions ma y berestric ted. #
Consult a quali/ed specialist workshop immediatel y.
Ý
Please wait 48 V battery
charging *T
he 48 V battery is dischar ged. You ha veswitched on theve hicle while the 12 V battery was being charge d with a
suitable charge r or while ano ther vehicle was pr oviding starting assistance.
The dischar ged 48 V battery is charge d automatically via thevo ltage con verter. ATer a fewminutes, theMotor can be
started again display message will be shown on the instrument displa y. #
Start theve hicle. #
Drive theve hicle for a while tocharge the 12 V battery and the 48 V battery aTer disconnecting thech arge r from
th eve hicle.
If th eMotor can be started again display message does not appear aTer a fewminutes: #
Tryto start theve hicle. #
Ifth eve hicle does not start, consult a quali/ed specialist workshop.
Cannot start engine See
Owner's Manual *T
he state of charge ofthe 48 V battery is too lo w.You can no longer start theve hicle. #
Switch o. elect rical consume rsthat are not requ ired. 418 418
Display message
s andwarning/indicator lamps

A
A
ut
ut omatic co-dr
omatic co-dr iv
iver airbag
er airbag shut
shuto.
o.
Fu nction of co-driver airbag shuto........... 49
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol
see Active Distance Assist DISTRONIC
A
A ut
ut omatic dr
omatic dr iving lights
iving lights ................................ 126
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/stop function
A
A ut
ut omatic engine st
omatic engine st op
op
see ECO start/stop function
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shuto.
o.
PA SSENGER AIR BAG indicator la mps...... 50
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function
Ac tivating/deactivating.......................... 141
A
A ut
ut omatic seat adjus
omatic seat adjustment tment
Setting................................................... 105
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 167
Drive prog ram displa y............................ 166
Drive prog rams...................................... 165
DY NAMIC SELECT switch....................... 165
Engaging drive position.......................... 169
Engaging reve rsege ar............................ 168
Kickdown............................................... 170 Manual
gear changing........................... .169
Selecting park position........................... 168
St eering wheel gearshiT paddles............ 169
Tr ansmission position displ ay................. 167
Tr ansmission position s........................... 167
Axle load
Axle load
Perm issible............................................ 356
Tr ailer operatio n.................................... .369 B B
Bad w
Bad w eat
eather light
her light ......................................... 129
Bag hook
Bag hook..................................................... 119
Ball neck
Ball neck Folding out/in........................................ 240
B
B AS (Br
AS (Br ak
ake Assis
e Assist Syst t System)
em)........................... 186
Batt
Batt ery
ery
Re mo tecont rol (stationary heater)......... 149
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 76
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)..................... .155
No tes..................................................... 322 No
tes (starting assis tance and charg-
ing)........................................................ 324
Belt
Belt see Seat belt
Bicy
Bicy cle r
cle r ack
ack
Load capacit y........................................ 369
Tr ailer operatio n.................................... .244
Blind Spo
Blind Spo t Assist
t Assist
Ac tivating/deactivating.......................... 214
Fu nction................................................ 212
System limi tations.................................. 212
Blow
Blow er
er
see Clima tecont rol
BlueTEC
BlueTEC see AdBlue ®
Bonnet
Bonnet Function (active bonnet)......................... 299
Opening/closing.................................... 299
Boo
Boo t lid
t lid
Closing.................................................... 82
HANDS-FREE ACCESS............................. 83
Locking separatel y................................... 84
Opening................................................... 82 448 448
Index

Mer
Mer
cedes-Benz ser
cedes-Benz ser vice centre
vice centre
see Quali/ed specialist workshop
Messag
Messag e (ins
e (instr
trument displa
ument displa y)
y)
see Displ aymessage
Messag
Messag e memory
e memory ......................................... 371
Mirr
Mirr ors
ors
see Outside mir rors
Mobile phone
Mobile phone Frequencies........................................... 354
Tr ansmission output (maximum )............. 354
Mobile phone
Mobile phone
see Smartphone integ ration
see Telephone
Model type
Model type see Vehicle identi/cation plate
MOExt
MOExt ended tyr
ended tyr es
es....................................... .317
Mot
Mot orwa
or wa y mode
y mode .......................................... .129
Mo
Mo ving away
ving away
see Driving tips
MUL
MUL TIBEAM LED
TIBEAM LED.......................................... 128
Multifunction st
Multifunction st eer
eering wheel
ing wheel
Overview of buttons............................... 249 Multifunction st
Multifunction st eer
eering wheel
ing wheel
see Steering wheel
Multimedia syst
Multimedia syst em
em
see MBUX multimedia system N
N
N
N a
avig
vig ation
ation
No tes..................................................... 266
Overview................................................ 267
Sh ow ing/hiding the menu...................... 266
Switching on.......................................... 266
Na Na vig vigation
ation
see Destination entry
see Map
see Route
N N eutr
eutr al
al
Engaging................................................ 168
N
Noise oise
Wheels and tyres................................... 336
Wheels/tyres......................................... 336 O O
Occupant safe
Occupant safe ty
ty
see Airbag see
Automatic co-driver airbag shuto.
see Child seat
see Pets in theve hicle
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
see Restraint system
see Seat belt
Oil Oil see Engine oil
On-boar
On-boar d com
d comput
puter
er
Displa yingthe service due dat e.............. 298
Head-up display menu............................ 252
Instrument display................................. 251
Menu overview.......................................2 49
Operating.............................................. 249
On-boar On-boar d diagnos
d diagnostics int tics interf
erface
ace
see Diagnostics connection
On-boar
On-boar d electr
d electrical syst
ical syst em batt
em batter
ery (12 V)
y (12 V)
Charging................................................ 326
Re placing.............................................. .327
St arting assis tance............................... .326 Index
465
465

S
S
t
tar
ar t-o.
t-o. assist
assist
see Optimised acceleration
St
St ar
art/st
t/st op butt
op butt on
on
Pa rking theve hicle................................. 177
St arting theve hicle............................... .154
Switching on the po wer supply/vehicle.. 153
St
St ar
art/st
t/st op function
op function
see ECO start/stop function
St
St art
art er batt
er batt ery
ery
Charging (Remo teOnline)...................... 155
St
St ar
arting
ting
see Vehicle
St
St ar
arting assist
ting assist ance
ance
see Jump-start connection
St
St ar
arting-o.
ting-o. aid
aid
see Hill Start Assist
St
St ationar
ationar y heat
y heater/v
er/ventilation
entilation
Ac tivating/deactivating (control panel)... 147
Displa ys(remo tecont rol)....................... 149
Problems (remo tecont rol)...................... 150
Re placing the battery (remo tecont rol)... 149
Setting (MBUX multimedia system)......... 148
Setting (remo tecont rol)......................... 148 S
S TEER C
TEER C ONTR
ONTROL
OL
Fu nction/no tes...................................... 188
St
St eer
eer ing wheel
ing wheel
Ad justing (electrically)........................... .111
Ad justing (manual ly).............................. .110
Buttons..................................................2 49
Care...................................................... 312
Operating the memory function.............. 114
St eering wheel heater............................ 112
St St eer
eer ing wheel
ing wheel g
gear
ear shiT
shiT paddles
paddles.................. 169
St
St eer
eer ing wheel heat
ing wheel heat er
er
Switching on/o.....................................1 12
St ow
St ow ag
age ar
e ar eas
eas
see Loading
see Stow age space
St ow
St ow ag age com
e com par
partments
tments
see Loading
see Stow age space
St ow
St ow ag age space
e space
Armrest................................................. 117
Centre console..................................... .117
Door...................................................... 117
Glo vecompartmen t............................... 117 S S
tr
tr ee
ee t names and house numbers
t names and house numbers
Displaying.............................................. 269
Sugg
Sugg es
estionstions
Con/guring............................................ 261
Sulphur cont
Sulphur cont ent
ent........................................... 359
Surr
Surr ound lighting
ound lighting
Switching on/o..................................... 133
Surr
Surr ound V
ound V iew
iew
see 360° Camera
Suspension
Suspension Adjusting thech assis le vel (AIR BODY
CO NTROL)............................................. 218
Suspension
Suspension
see AIR BODY CONTROL
S
S VHC (subst
VHC (subst ances of v
ances of ver
ery high concer
y high concer n)
n)........ 33
Switc
Switc h-o.
h-o.dela
delay time
y time
Exterior.................................................. 133
Interior.................................................. .134
Sync
Sync hr
hronisation function
onisation function
Ac tivating/deactivating (control panel)... 144
Ac tivating/deactivating (MBUX multi-
media system)....................................... 145 Index
471
471

Syst
Syst
em se
em se ttings
ttings
Overview of the system settings menu.... 262
Re set function (MBUX multimedia sys-
te m)....................................................... 265
Syst
Syst em se
em se ttings
ttings
see Language T
T
T
T ailpipes (car
ailpipes (car e)
e)............................................. 311
T
T ak
ak e-bac
e-bac k of end-of-lif
k of end-of-lif e v
e vehicles
ehicles
Pr otection of the environment.................. 20
T
T ank cont
ank cont ent
ent
Ad Blue ®
................................................ .363
Fu el....................................................... 362
Re ser ve(fuel)........................................ .362
T
T ec
ec hnical data
hnical data
Axle load (trailer operation).................... 369
Component-speci/c information............ 355
Fa stening points (t railer hitch)................ 368
Information............................................ 353
Mounting dimensions (trailer hitch)........ 368
No tes (trailer hitch)................................ 368
Overhang dimension (trailer hitch)......... .368 Re
gula tory radio identi/cation (Indo-
nesia).................................................... 355
Re gula tory radio identi/cation of
small component s.................................. 355
To ngue weight........................................ 369
To wing capacity (trailer operation ).......... 369
T T elephone
elephone
Connecting a mobile phone (Passke y).... 277
Connecting a mobile phone (Secure
Si mp lePa iring)....................................... 277
Fu nctions in thete lephone menu............ 277
No tes..................................................... 274
Operating modes................................... 276
Te lephone menu overview...................... 276
Wi reless charging (mobile phone)........... 123
T
T elephon elephon y oper
y operating modes
ating modes
Blu etoo th®
Te lephony............................. 276
Making calls in theve hicle..................... 276
T
T em
em per
per ature
ature
Setting theve hicle interior temp era-
ture....................................................... 142
Themes
Themes Fastening.............................................. .261 Thr
Thr
ough-loading f
ough-loading f eature
eature
see Seat
T
T ie-do
ie-do wney
wn eyes
es.............................................. 119
TIREFIT kit
TIREFIT kit Declaration of conformity......................... 31
Storage location.................................... .318
Using..................................................... 319
T T o switc
o switc h on t
h on the ignition
he ignition
see Vehicle
T
T ongue w
ongue w eight
eight.............................................. 369
T
T ool
ool
see Vehicle tool kit
T
T op Tet
op Tether
her...................................................... 65
T
T opping up
opping up
Topping up AdBlue ®
.............................. .175
T
T ouc
ouc h Contr
h Contr ol
ol
On-board computer................................ 249
Operating.............................................. 257
T T ouc
ouc hpad
hpad
Operating.............................................. 257
T
T ouc
ouc hscr
hscr een
een
Operating.............................................. 257 472
472
Index