2022 MERCEDES-BENZ E-CLASS CABRIOLET 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 due toove r-
vo ltage When
charging using a battery charge r without
a maximum charging voltage, the battery or
th e on-board electronics may 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 tothe
ignition of hydrogen gas
If th ere is a short circuit or spar ksare created,
th ere is a danger of hydrogen gas igniting
when youch arge the batter y. #
Make sure that the POSITIVE term inal of
a connected 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 term inals described. 326 326
Breakdown assistance

#
During starting assistance, alw aysta ke
care toconnect only battery term inals of
identical polarity. #
During starting assistance, obser vethe
sequence described for connecting and
disconnecting the jump leads. #
Do not connect or disconnect the bat-
te ry term inals with the engine running. &
W
W ARNI 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 inst rument
clus ter 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. Breakdown assistance
327 327

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 ays328
328
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 POSITIVE contact
2 and the positive term inal of the donor bat-
te ry. Begin each time 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 324).
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
329 329

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
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 inst rument 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. #
Connect a suitable charge r appr ovedfo r Mercedes-Benz with su1cient charge output tothe jump-start connection
point of the 12 V battery (/ page 328).
The 48 V battery is charge d via thevo ltage con verter in theve hicle.
Motor can be started again *The 48 V battery has been charge d automatically via thevo ltage con verter. #
Start theve hicle and drive for a while tocharge the 12 V battery and the 48 V batter y. 420 420
Display message
s andwarning/indicator lamps

Assist
Assist
ance syst
ance syst ems
ems...................................... 187
ASS YS
ASS YST PL
T PL US
US
Battery disconnection periods................ 301
Service inter val display.......................... 300
Service requ irements............................. 300
ATA
ATA , Anti-theT pr otection
Deactivating the alar m............................. 98
Fu nction.................................................. 97
Interior pr otection....................................99
To w- awa y protection..........................9 8, 99
A
A TTENTION ASSIST
TTENTION ASSIST
Function................................................ 192
Setting.................................................. .194
A
A ut
ut hor
hor ised w
ised w ork
orkshop
shop ...................................... 34
A
A ut
ut omatic car w
omatic car w ash
ash...................................... 307
A
A ut
ut omatic car w
omatic car w ash mode
ash mode............................ 307
A
A ut
ut omatic climat
omatic climat e contr
e control
ol............................ 146
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol,Ac tive Dis-
ta nce Assist DISTRONIC, DISTRONIC.......... .197
A
A ut
ut omatic dr
omatic dr iving lights
iving lights................................ 128
A
A ut
ut omatic emerg
omatic emerg ency call
ency call, Mercedes-
Benz emer gency call system......................... 289 A
A
ut
ut omatic engine st
omatic engine st ar
art/st
t/st op
op
ECO start/stop function........................ 163
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shuto.
o.,
PA SSENGER AIR BAG status display
Fu nction.................................................. 50
PA SSENGER AIR BAG indicator la mps...... 52
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function ................. 143
A
A ut
ut omatic seat adjus
omatic seat adjustment tment........................... 107
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
Changing gear........................................ 169
DIRECT SELECT le ver............................. 169
Drive prog rams...................................... 167
DY NAMIC SELECT switch....................... 167
Engaging drive position.......................... 171
Kickd own.............................................. .172
Manual shiTing...................................... 171
St eering wheel gearshiT paddles............ 171
Tr ansmission position displ ay................. 169
Tr ansmission position s........................... 169
A A ut
ut onomous br
onomous br aking
aking.................................... 208
Axle load
Axle load Trailer operatio n.................................... .371 B
B
Bad w
Bad w eat
eather light
her light ......................................... 131
Bag hook
Bag hook..................................................... 121
Ball neck Ball neck Folding out/in........................................ 242
Tr ailer coupling...................................... 244
B
B AS
AS, Brake Assist System............................. 188
Batt
Batt er
ery (12 V batt
y (12 V batt er
ery)
y)
Charging................................................ 328
No tes..................................................... 324
Re placing.............................................. .329
St arting assis tance............................... .326
Batt Batt er
ery (ke
y (ke y)
y).................................................. 78
Batt
Batt er
ery (r
y (r emot
emot e contr
e contr ol)
ol)............................... 151
Batt
Batt er
er y (st
y (st art
arter batt
er batt er
ery)
y)
Charging via Remo teOnline................... 157
Belt
Belt ................................................................ 42
Bicy
Bicy cle r
cle r ack
ack
Load capacity........................................ 371
Tr ailer operatio n.................................... .246
Blind Spo
Blind Spo t Assist
t Assist,Active Blind Spot Assist
Ac tivating/deactivating.......................... 217 448
448
Index

High-pressure cleaner............................ 308
Pa int...................................................... 309
Plastic trim............................................3 14
Re alwo od/trim elements..................... .314
Ro of lining............................................. 314
SoT top................................................ .310
Ta ilpipes................................................ 313
Tr ailer hitc h............................................ 313
Ve hicle interior....................................... 314
Wa shing byhand.................................... 309
Wi nd de0ector....................................... 311
Car
Car ing f
ing f or plas
or plastic tr tic trim
im................................... 314
Car
Car ing f
ing f or r
or real w
eal w ood
ood..................................... 314
Car
Car ing f
ing f or t
or the st
he st eer
eering wheel
ing wheel........................ 314
Car
Car ing f
ing f or tr
or trim elements
im elements............................... 314
Car
Car ing f
ing f or wheels
or wheels......................................... 313
Centr
Centr al loc
al locking syst
king syst em
em
Button..................................................... 80
Ke y.......................................................... 77
Char
Char ging ging
12 V battery........................................... 328
USB port............................................... .123
Wi relessly charging a mobile phon e........ 123 Chassis
Chassis
Damping characteristics........................ .219
DY NAMIC BODY CONTROL................... .219
Chassis lev
Chassis lev el (AIR BOD
el (AIR BOD Y C
Y CONTR
ONTR OL)
OL)
Setting................................................... 221
Chec
Chec king t
king t he coolant lev
he coolant lev el
el........................... 305
Child safe
Child safe ty lock
ty lock
Side window (rear)................................... 73
Child seat
Child seat Appr oval catego ries.................................61
Basic instructions.................................... 56
Fi tting ISOFIX/i-Size................................ 65
Fr ont passenger seat............................... 71
Re commendations forch ild restraint
systems................................................... 60
Ris ks/dan gers......................................... 57
Seats suitable for belt-secured child
re straint systems..................................... 68
Seats suitable for i‑Size child restraint
systems................................................... 64
Seats suitable for ISOFIX child
re straint systems..................................... 63
Securing.................................................. 61 Securing
tothe front passenger seat
with the seat belt..................................... 72
Securing tothere ar seat with the
seatbelt................................................... 69
To pTe ther................................................ 67
Wi thout automatic front passenger
airbag shuto........................................... .71
Childr
Childr en en
Av oiding dangers in theve hicle............... .57
Basic instructions.................................... 56
Chock
Chock.......................................................... 347
City lighting City lighting.................................................. 131
Clean v Clean v ar
ar nish
nish............................................... 309
Cleaning
Cleaning Air/water duct....................................... 307
Automatic car wash.............................. .307
Car parts............................................... 313
Decorative foil........................................ 310
High-pressure cleaner............................3 08
Pa int...................................................... 309
Ve hicle interior....................................... 314
Cleaning car
Cleaning car pe
pe ts ts.......................................... 314
Cleaning seat cov
Cleaning seat cov ers
ers.................................... 314450
450
Index

Se
Se
tting a speed
tting a speed............................................ 194
ShiTing
ShiTing Automatic transmission.......................... 171
GearshiT recommendation..................... 172
Manual.................................................. 171
St eering wheel gearshiT paddles............ 171
Short
Short ening t
ening t he br
he braking dist
aking dist ance
ance
BAS ....................................................... 188
Side airbag
Side airbag..................................................... 47
Side windo ws
Side windo ws
Au tomatic function.................................. .95
Child saf ety lock (rear)............................ .73
Con venience closing............................... .96
Con venience opening.............................. .95
Open/close with key................................ 96
Opening with theke y................................ 95
Opening/closing...................................... 93
Opening/closing (all)............................... 93
Problem................................................... 97
Ra in closing function................................ 95
Skid c Skid c hains
hains.................................................. 338 Smar
Smar
tphone int
tphone int egr
egration
ation, Android Auto,
Apple CarPlay ®
, Mobile phone, Smart-
phone, iPhone ®
Overview................................................ 287
Sno
Sno w c
w chains
hains................................................ 338
Soc ket
Soc ket
12 V (front centre console).................... 123
Tr ailer operatio n.................................... .244
SoT
SoT t top
op
Care...................................................... 310
Close with key.......................................... 96
Opening with theke y................................ 95
Opening/closing...................................... 87
Problem.................................................. .91
Re locking................................................. 89
SoT SoT t
top switch
op switch............................................... 87
Sound
Sound
PRE-SAFE ®
Sound................................... 55
Wheels/tyres......................................... 338
Sound menu
Sound menu................................................2 99
Sound se
Sound se ttings
ttings.............................................2 99
Spar
Spar e par
e par ts
ts, Mercedes-Benz GenuineParts..... 21 Spar
Spar
e wheel
e wheel
Emer gency spa rewheel........................ .353
Specialis
Specialist w t work
ork shop
shop ....................................... 34
Speci/c
Speci/c absorp
absorption r
tion rate
ate................................. 25
Speed
Speed Limit, Limiter.......................................... 195
Save, cruise cont rol............................... 200
Sa ve, DISTRONIC................................... 200
Sa ve, Limi ter..........................................2 00
Speed limit Speed limit Winter tyres.......................................... .197
St
St anding lights
anding lights............................................. 127
St
St ar
art-o.
t-o. assist
assist , Optimised acceleratio n........ 159
St
St ar
art/st
t/st op butt
op butt on
on
Pa rking theve hicle................................. 179
St arting theve hicle............................... .156
Switching on the po wer supply/vehicle.. 155
St
St ar
art/st
t/st op function
op function, ECO start/stop func-
tion............................................................. .163
St
St art
art er batt
er batt ery
ery
Charging via Remo teOnline................... 157
St
St ar
arting
ting
Re mo teOnline....................................... 158 Index
469
469