2021 MERCEDES-BENZ E-CLASS COUPE charging

If
yo u ha vetodisconnect the 12 V batter y,con-
ta ct a quali/ed specialist workshop.
Comply with saf ety no tes and take protective
measures when handling batteries. Risk of
explosion. Fire
, naked 0ames and smoking are
prohibi ted when handling the batter y.
Av oid creating spar ks. Electrolyte or battery acid is cor
rosive.
Av oid contact with the skin, eyes or
clo thing. Wear suitable pr otective
clo thing, in particular glo ves, an apron
and a face mask. Immediately rinse
electrolyte or acid splashes o. with
clean water. Consult a doctor if neces-
sar y. We
ar saf ety glasses. Ke
ep children away. Obser
vethis Owner's Manual.
Obser vethefo llowing if you do not intend touse
th eve hicle over an extended period of time:
R Activate standby mode.
R Alternativel y:connect the battery toa battery
ch arge r appr ovedby Mercedes-Benz or con-
sult a quali/ed specialist workshop todiscon-
nect the batter y. N N
o
ot
tes on st
es on st ar
arting assist
ting assist ance and c
ance and c har
harging t
ging t he 12
he 12
V batt
V batt ery
ery All v All v
ehicles
ehicles
When charging the battery and during starting
assistance, alw ays use the jump-start connection
point in the engine compartment. *
N
NOOTE
TE Damage tothe battery from over-
vo ltage When
charging using a battery charge r without
a re striction of the maximum charging voltage,
th e battery or the on-board electronics can be
damaged. #
Only use battery charge rs with a maxi-
mum charging voltage of 14.8 V. &
W
WARNI NG
ARNI NGRisk of explosion due tohydro-
ge nga s igniting
If, when charging a batter y,there is a short
circuit or spar ksstart toform ,th ere is a dan-
ge r of hydrogen gas igniting. #
Take care that the positive clamp con-
nected toa battery does not come into
contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,alw ays obser vethe sequence of
battery clamps described. Breakdown assistance
325
325

#
Take care toonly connect battery term i-
nals of identical polarity when receiving
starting assistance. #
Obser vethe sequence described for
connecting and disconnecting the jump
leads when receiving starting assistance. #
Do not connect or disconnect the bat-
te ry term inals while the engine is run-
ning. &
W
WARNI NG
ARNI NGRisk of explosion due toexplo-
sive mixture of gases
An explosive mixture of gases can escape
from the battery during charging and starting
assis tance. #
Fire , naked 0ames, smoking and creating
spar ksmust be avoided. #
Make sure there is adequate ventilation. #
Do not stand overth e batter y. &
W
WARNI NG
ARNI NGRisk of explosion from a frozen
battery
A dischar ged battery may freeze at temp era-
tures slightly abo veor below freezing point.
During starting assistance or battery charging,
battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis-
ta nce. If
th e indicator/warning lamps in the instrument
cluster do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has frozen.
In this case you may neither jump-start theve hi-
cle nor charge the batter y.
The service life of a bat tery that has been thawed
may be dramatically shor tened. The starting char-
acteristics may be impaired, especially at low
te mp eratures.
It is recommended that you ha veath awe d battery
ch ecked at a quali/ed specialist workshop. All v
All v ehicles
ehicles
* NO
NOTE
TEDamage caused bynume rous or
ex tended attem ptsto start the engine Numerous or
extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combusted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting assis-
ta nce and when charging the batter y:
R Only use undamaged jump lead/charging
cables with a su1cient cross-section and
insulated term inal clamps.
R Non-insulated parts of thete rm inal clamps
must not come into contact with other me tal
parts while the jump lead/charging cable is
connected tothe battery/jump-start connec-
tion point.
R The jump lead/charging cable must not come
into contact with any parts which may mo ve
when the engine is running. 326 326
Breakdown assistance

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
Vehicles wit
ehicles wit h a pe
h a pe tr
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 ays Breakd
own assistance
327
327

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 323).
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. 328 328
Breakdown assistance

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. 416 416
Display message
s andwarning/indicator lamps

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 ................................ 127
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.......................... 142
A
A ut
ut omatic seat adjus
omatic seat adjustment tment
Setting................................................... 104
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 168
Drive prog ram displa y............................ 167
Drive prog rams...................................... 166
DY NAMIC SELECT switch...................... .166
Engaging drive position.......................... 170
Engaging reve rsege ar............................ 169
Kickdown............................................... 171
Manual gear changing........................... .170
Selecting park position........................... 169
St eering wheel gearshiT paddles............ 170 Tr
ansmission position displ ay................. 168
Tr ansmission position s........................... 168
Axle load
Axle load
Perm issible............................................ 357
Tr ailer operatio n.................................... .370 B
B
Bad w
Bad w eat
eather light
her light ......................................... 130
Bag hook
Bag hook..................................................... 119
Ball neck
Ball neck Folding out/in........................................ 241
B
B AS (Br
AS (Br ak
ake Assis
e Assist Syst t System)
em)........................... 187
Batt
Batt ery
ery
Re mo tecont rol (stationary heater)......... 150
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 75
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)..................... .156
No tes..................................................... 323
No tes (starting assis tance and charg-
ing)........................................................ 325
Belt
Belt see Seat belt Bicy
Bicy
cle r
cle r ack
ack
Load capacit y........................................ 370
Tr ailer operatio n.................................... .245
Blind Spo
Blind Spo t Assist
t Assist
Ac tivating/deactivating.......................... 216
Fu nction................................................ 213
System limi tations.................................. 213
Blow
Blow er
er
see Clima tecont rol
BlueTEC
BlueTEC see AdBlue ®
Bonnet
Bonnet Function (active bonnet)......................... 303
Opening/closing.................................... 303
Boo
Boo t lid
t lid
Closing.................................................... 81
HANDS-FREE ACCESS............................. 84
Locking separatel y................................... 86
Opening................................................... 81
Opening dimensions.............................. 368
Br Br ak
ak e Assis
e Assist Syst t System
em
see BAS (Brake Assist System) 446
446
Index

Mo
Mo
ving away
ving away
see Driving tips
MUL
MUL TIBEAM LED
TIBEAM LED.......................................... 129
Multifunction st
Multifunction st eer
eering wheel
ing wheel
Overview of buttons............................... 250
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..................................................... 270
Overview................................................ 271
Sh ow ing/hiding the menu...................... 270
Switching on.......................................... 270
Na
Na vig vigation
ation
see Destination entry
see Map
see Route
N N eutr
eutr al
al
Engaging................................................ 169 N
Noise
oise
Wheels and tyres................................... 337
Wheels/tyres......................................... 337 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.............. 302
Head-up display menu............................ 253
Instrument displa y................................. 252
Menu overview.......................................2 50
Operating.............................................. 250 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................................................ 327
Re placing.............................................. .328
St arting assis tance............................... .327
On-boar On-boar d electr
d electronics
onics
Engine electronics................................. 354
No tes..................................................... 354
Tw o-w ayradios...................................... 354
Online ser Online ser vices
vices
Data storage............................................ 37
Online ser
Online ser vices
vices
see In-Car O1ce
Open-sour
Open-sour ce
cesoTw
soTw are
are.................................... 38
Opening t
Opening t he boo
he boo t lid using y
t lid using y our f
our foot
oot
HANDS-FREE ACCESS............................. 84
Oper
Oper ating
ating 0uids
0uids
Ad Blue ®
................................................ .363
Ad ditives (fuel)....................................... 361
Brake 0uid............................................. 366
Coolant (engine).................................... 366
Engine oil............................................... 364 Index
463 463

Ser
Ser
vice
vice
see ASS YST PLUS
Ser
Ser vice centre
vice centre
see Quali/ed specialist workshop
Ser
Ser vice int
vice int erv
erval display
al display
see AS SYST PLUS
Se
Se tting a speed
tting a speed
see Cruise control
Se
Se tting t
tting t he map scale
he map scale
see Map
ShiT
ShiT paddles
paddles
see Steering wheel gearshiT paddles
ShiTing
ShiTing g
gears
ears
GearshiT recommendation..................... 171
Side airbag
Side airbag ..................................................... 46
Side windo ws
Side windo ws
Au tomatic function.................................. .87
Child saf ety lock in there ar..................... .71
Closing using theke y............................... 88
Co nve nience closing............................... .88
Con venience opening.............................. .88
Opening with theke y................................ 88
Opening/closing...................................... 86 Problem................................................... 89
Ra
in closing function................................ 87
Sliding sunr
Sliding sunr oof oof
Au tomatic functions................................. 92
Closing................................................... .89
Closing using theke y............................... 88
Opening................................................... 89
Opening wi th theke y................................ 88
Problem................................................... 93
Ra in-closing feature................................ .92
Smar
Smar tphone tphone
see Sma rtphone integ ration
see Telephone
Smar
Smar tphone int
tphone int egr
egration
ation
Overview................................................ 289
Sno
Sno w c
w chains
hains................................................3 37
Soc ke
Soc ket (12 V)
t (12 V)
Fr ont centre console.............................. 122
SoTw
SoTw are
areupdate
update
System updates..................................... 266
Sound
Sound PRE- SAFE®
Sound................................... 53 Sound menu
Sound menu
Functions overview................................ 300
Spar
Spar e wheel
e wheel
see Emer gency spa rewheel
Specialis
Specialis t w
t work
ork shop
shop
see Quali/ed specialist workshop
Speci/c
Speci/c absorp
absorption r
tion rate
ate................................. 24
Speed limit f
Speed limit f or wint
or winter tyr
er tyres
es
Setting.................................................. .196
St
St andb
andb y mode
y mode
Ac tivating/deactivating.......................... 184
Fu nction................................................ 184
St
St anding lights
anding lights............................................ .126
St
St ar
art-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................................. 178
St arting theve hicle............................... .155
Switching on the po wer supply/vehicle.. 154
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)..................... .156 468
468
Index