service MERCEDES-BENZ E-CLASS CABRIOLET 2022 Repair Manual

R
NOx exhaust gas aTertreatment malfunc-
tions #
Avoid impurities in AdBlue ®
. Ad
Blue ®
residues cr ystallise aTer a period of
time, and contaminate the sur faces with which
th ey come into contact. Clean the dirty sur faces
with water as soon as possible.
When you open theAd Blue ®
tank, small amounts
of ammonia vapour may escape. Do not inhale
any ammonia vapours that may be released. Only
/ll theAd Blue ®
tank in well-ventilated areas.
A
A dBlue
dBlue ®
®
/lling
/lling capacity and consump
capacity and consump tion
tion
Tot
Tot al capacity of A
al capacity of A dBlue
dBlue®
®
t
tank
ank Model
Tot
Mode lT otal capacity
al capacity
All model s1 4 litresA A
dBlue
dBlue ®
®
consump
consump tion
tion
The average AdBlue ®
consu mption is between 1%
and 5% of fuel consum ption. Like fuel consump-
tion, AdBlue ®
consu mption is high lydependent upon driving style and operating conditions.
For
th is reason, your vehicle's actual consu mption /g-
ures in da y-to -day operating conditions may di.er
from the consum ption /gures calculate d. The fre-
qu ency at which you will ha veto to p up AdBlue ®
will also vary. Ha vetheAd Blue ®
supply checked
at a quali/ed specialist workshop before making
jou rney s outside Europe. Before a lon ger st ayout-
side Europe, consult a quali/ed specialist work-
shop.
A
A dBlue dBlue ®
®
r
rang
ang e and
e and /ll
/lllev
level
el
Yo u can ha vetheAd Blue ®
range and le vel dis-
pla yed on the driver's displa y.
% The AdBlue ®
range sh own is high lydependent
upon driving style and operating conditions.
The actual range therefore may deviate from
th era nge cur rently displa yed on the driver's
displa y.
The information supplied in the Owner's Manual
re ga rding there ser vequantity at the /r stwa rning
on the driver's display and the minimum top-up
qu antity when theAd Blue ®
tank is em pty is also
to be understood as guide values. Engine oil
Engine oil
N
No
ot
tes on engine oil
es on engine oil
Obser vethe no tes on operating 0uids
(/ page 360). *
N NOOTE TE Engine damage caused byan inco r-
re ct oil /lter, incor rect oil or additi ves #
Do not use engine oils or oil /lters other
th an those which meet the speci/cations
necessary forth e prescribed service
inter vals. Te
ch nical data
365
365

Displa
Displa
y messag
y messag es
es Intr
Intr
oduction
oduction Inf
Inf
or
ormation about displa
mation about displa y messag
y messages
es
Display messages appear on the inst rument dis-
pla y.
Display messages with graphic symbols are sim-
pli/ed in the Owner's Manual and may di.er from
th e symbols on the inst rument displa y.The instru-
ment display sh ows high-priority display messages
in red. Cer tain display message s are accompa-
nied byawa rning tone.
Please act in accordance with the display mes-
sages and follow the additional no tes in the Own-
er's Manual.
Fo r some display messages, symbols will also be
shown:
R Õ Further information
R ¨ Hide displ aymessage
Wi th th e leT-hand Touch Control, you can select
th ere specti vesymbol byswiping tothe leT or
ri ght. Pressing Õdispla ysfur ther information on th
e media displa y.Press the¨ symbol tohide
th e display message.
Yo u can hide lo w-priority display messages by
pressing the back button Gorthe leT-hand
To uch Control. The display message s willthen be
stored in the message memor y.
Re ctify the cause of a display message as quickly
as possible.
High-priority display message s cannotbe hidden.
The instrument display will show these display
messages permanently until the cause of the dis-
play message has been recti/ed.
Calling up sav
Calling up sav ed displa ed display messag
y messag es
es
On-board computer:
4 Service 5
1 message
If th ere are no display messages, No messages
will appear on the inst rument displa y. #
Scroll thro ugh the display messages byswip-
ing upwards or down wards on the leT-hand
To uch Control. #
T
T o e
o e xit t
xit t he messag
he messag e memory
e memory:
:press the back
button G. 372
372
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Ifth e display message still appears, consult a quali/ed specialist workshop.
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N
N O
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 305). #
Have the engine cooling system checked at a quali/ed specialist workshop.
ÿ
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. 390
390
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
#
Stop vehicle Leave engine
running *T
he 12 V battery charge leve l is too lo w. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Leavethe engine running. #
Ifth e display message disappears: drive on. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop.
Û Battery overheated Stop,
everybody out! Outdoors if
possible *T
he 48 V battery is overheating. There is a risk of /re. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
If possible, stop theve hicle in the open air and ensure that all vehicle occupants getout.
% Supporting vehicle functions may activate automaticall y,e.g. the air-recirculation mode as part of climate control. #
Do not continue driving. #
If smoke is present, lea vethe danger zone and call the /re service immediatel y. #
Consult a quali/ed specialist workshop even if there are no extern al signs of a /re.
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. Display messages and
warning/indicator lamps
419 419

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
R The engine coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theeve nt of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. #
Notethe messages on the instrument displa y.
If t If t he coolant t
he coolant t em
em per
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it until the engine has cooled down. #
Check the coolant le vel (/ page 305). Display message
s andwarning/indicator lamps
435
435

Fu
nction................................................ 132
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 133
Switching on/o..................................... 134
A
A dBlue
dBlue ®
®
Ad ditives................................................ 364
Capacity................................................ 365
No tes..................................................... 176
Purit y.................................................... .364
To pping up............................................ .177
A
A dditional door lock
dditional door lock ....................................... 79
A
A dditiv
dditiv es
es
Ad Blue ®
......................................... 177, 364
Engine oil............................................... 365
Fu el....................................................... 362
ATer
ATer -sales
-sales ser
service
vice, ASS YST PLUS................. 300
AIR BOD
AIR BOD Y C
Y CONTR
ONTR OL
OL
Fu nction................................................ 220
Setting.................................................. .221
Air conditioning menu
Air conditioning menu
Air distribution....................................... 146
Calling up.............................................. 145
Climate control...................................... 146 Ionisation............................................... 147
St
ationary heater/ ventilation................. 150
Air dis
Air distr tribution
ibution
MBUX multimedia system...................... .146
Setting................................................... 144
Air fr Air fr eshener syst
eshener syst em
em.................................... 147
Air inlet
Air inlet........................................................ 307
Air pr Air pr essure
essure................................................. 339
Air suspension
Air suspension, AIR BODY CONTROL........... .220
Air v
Air v ents
ents
adjusting (AIRSCARF)............................. 154
Setting................................................... 153
Air/w Air/w at
ater duct
er duct............................................. 307
Airbag
Airbag, Occupant saf ety
Au tomatic front passenger airbag shut
o............................................................. 50 Deployment............................................ .41
Fr ont airbag............................................. 47
Overview.................................................. 47
PA SSENGER AIR BAG indicator la mps...... 52
Pr otection................................................ 48
Re duced pr otection.................................. 49 AIRC
AIRC AP AP
Ac tivating................................................. 90
Deactivating............................................. 90
Air0ow
Air0ow Setting................................................... 144
AIRSC
AIRSC ARF
ARF
Ad justing the outlets.............................. 154
Alar
Alar m syst
m syst em
em,ATA
Interior pr otection function....................... 99
All-wheel dr
All-wheel dr ive
ive, 4MATIC................................ 173
Ambient lighting
Ambient lighting........................................... 135
Animals
Animals Pets in theve hicle.................................... 75
Anti-loc
Anti-loc k br
k braking syst
aking syst em
em, ABS..................... .188
Anti-t
Anti-theT heTalar
alarm syst
m syst em
em,ATA ........................... 97
Anti-t
Anti-theT heTprot
pr otection
ection, ATA
Ad ditional door loc k................................. 79
Immobiliser.............................................. 97
Appr ov
Approv al numbers
al numbers....................................... .357
Apps
Apps
Mercedes me calls................................. 280
Mercedes me connect........................... 283 Index
447 447

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

Dat
Dat
a pr ot
a pr otection r
ection r ights
ights....................................39
Dat
Dat a st
a st or
orage
age
Data pr otection rights.............................. 39
Electronic control units............................ 36
Online services........................................ 39
Deactiv
Deactiv ating t
ating the alarm
he alarm ................................... 98
Dealer
Dealer ship
ship..................................................... 34
Declar
Declar ation of conf
ation of conf or
ormity
mity
Elect romagnetic compatibilit y.................. 24
Impor ter addresses.................................. 31
Jack......................................................... 32
Speci/c absor ption rate........................... 25
TIREFIT kit................................................ 32
Wi reless vehicle component s................... 25
Decor Decor ativ
ative f
e foil
oil.............................................. 310
DeN
DeNOx ag Ox ag ent
ent
Ad Blue ®
................................................ .176
Des
Destination entry tination entry......................................... 270
Det
Det ecting inatt
ecting inatt entiv
entiveness
eness,
AT TENTION ASSIST..................................... .192
Diagnos
Diagnostics connection tics connection .................................. 33
Diesel
Diesel
Low outside temp eratures...................... 363 Digit
Digit
al oper
al oper at
ator's manual
or's manual ...............................18
Digit
Digit al Owner's Manual
al Owner's Manual .................................. 18
DIRECT SELECT lev
DIRECT SELECT lev er
er
Au tomatic transmission.......................... 169
Engaging neut ral.................................... 170
Engaging park position automaticall y...... 170
Engaging park position manuall y............ 170
Engaging reve rsege ar........................... .170
Fu nction................................................ 169
Gea rshiT recommendation..................... 172
Manual gearshiTing................................ 171
Displ ay
Display
Care......................................................3 14
Home screen......................................... 258
Displa
Displa y (on-boar
y (on-boar d com
d comput
puter)
er)
Displa yson the inst rument displa y......... 253
Displa
Displa y message
y message
Calling up in the on-board computer....... 372
Displa
Displa y messag
y messag es
es
ç - - - km/h..................................... 401
È - - - km/h..................................... 401
h - - - km/h..................................... 400 #
12 V battery See Owner's Man-
ual......................................................... 417
K 12 V battery See Owner's Man-
ual......................................................... 379
Û 48 V battery See Owner's Man-
ual......................................................... 419
: Active Light System inoperative..... 381
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 427
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 427
¯ AdBlue system fault Engine
start not possible................................... 428
¯ AdBlue system fault See Own-
er's Manual............................................ 427
5 Add 1 litre engine oil when next
re fuelling ............................................... 429
é ATTENTION ASSIST inoperati ve..... 400 452 452
Index

Media.................................................... 292
Na vigation............................................. 268
No tes..................................................... 256
Overview................................................ 256
Setting route-based speed adap tation.... 204
St andby mode function.......................... 185
System settings.................................... .264
To uchscreen.......................................... 259
Media Media Overview of functions/symbols.............. 292
Media display
Media display , Home screen
Operating.............................................. 259
Media mode
Media mode Connecting Blue tooth ®
audio equip-
ment..................................................... .295
Medical aids
Medical aids................................................... 35
Memor Memor y function
y function
Head-up displa y..................................... 116
Outside mir rors...................................... 116
Seat....................................................... 116
St eering wheel....................................... 116
Menu (on-boar
Menu (on-boar d com
d comput
puter)
er)
Head-up displa y..................................... 254
Overview................................................ 251 Mer
Mer cedes me App
cedes me App
Ac tivating on-demand features................. 22
Information........................................... .285
Mer
Mer cedes me calls
cedes me calls
Ar ranging a service appointment............ 281
Calling the Mercedes-Benz Customer
Centre aTer automatic accident/
breakdown de tection............................. 281
Calls via theove rhead control panel....... 279
Consenting tothe transfer of data.......... 282
Information............................................ 280
Mercedes-Benz Customer Centre...........2 80
Tr ansfer red data..................................... 282
Mer Mer cedes me connect
cedes me connect
Ac cident/B reakdown Management........ 284
Information........................................... .283
Tr ansfer red data..................................... 285
Mer
Mer cedes-
cedes- AMG v
AMG vehicles
ehicles
No tes..................................................... 155
Mer
Mercedes-Benz emerg cedes-Benz emerg ency call sy st
enc y call sy stem
em
Au tomatic emer gency call...................... 289
Data trans fer........................................ .291
ERA GLONASS test mode....................... 291
In fo rm ation........................................... .288 Manual emer
gency call.......................... 290
Overview................................................ 289
Self-diagnosis........................................ 291
Mer
Mer cedes-Benz GenuineP
cedes-Benz GenuineP ar
arts
ts........................ .21
Mer
Mer cedes-Benz ser
cedes-Benz ser vice centre
vice centre....................... 34
Messag
Messag e memory
e memory......................................... 372
Mirr
Mirr ors
ors
Mir rorfo lding function............................ 143
Outside mir rors...................................... 140
Re ar-view mir ror..................................... 141
Mobile phone
Mobile phone Frequencies........................................... 356
Maximum transmission output............... 356
No tes on wireless chargin g.................... 123
Model type
Model type ................................................... 358
MOExt MOExt ended tyr
ended tyr es
es........................................ 319
Mot
Mot orwa
or wa y mode
y mode .......................................... .131
MUL
MUL TIBEAM LED
TIBEAM LED.......................................... 130 N
N
N
N a
avig
vig ation
ation
Ac tivating............................................... 268
Announcements..................................... 269 464
464
Index

Destination entry...................................2
70
Displaying/hiding the menu................... 268
Live Tra1c Information........................... 273
Map....................................................... 272
No tes..................................................... 268
N
Neutr eutr al al
En gaging................................................ 170 O
O
Occupant safe
Occupant safe ty
ty............................................. 42
On-boar
On-boar d com
d comput
puter
er, Computer, Operating system
Displaying the service due dat e.............. 300
Instrument displa y................................. 253
Menu overview.......................................2 51
Operating.............................................. 251
On-boar
On-boar d diagnos
d diagnostics int tics interf
erface
ace , Diagnos-
tics connection.............................................. 33
On-boar
On-boar d electr
d electronics
onics
Engine electronics................................. 355
Tw o-w ayradios...................................... 355
on-demand f
on-demand f eature
eature........................................ .22
Online ser
Online ser vices
vices............................................. .39
Open Sour
Open Sour ce
ceSoTw
SoTw are
are,Free soTware............. 39 Open/close g
Open/close g
ar
arag
ag e door
e door.............................. 182
Open/close g
Open/close g ate
ate..........................................1 82
Opening t
Opening t he boo
he boot lid using y
t lid using y our f
our foot
oot
HANDS-FREE ACCESS............................. 85
Oper
Oper ating
ating 0uids
0uids
Ad Blue ®
................................................ .364
Ad ditives................................................ 362
Brake 0uid............................................. 367
Coolant.................................................. 367
Diesel.................................................... 363
Engine oil............................................... 365
Pe trol..................................................... 361
Wi ndsc reen washer 0uid........................ 368
Oper Oper ating safe
ating safe ty
ty
48 V on-board elect rical system............... 23
Information............................................. .23
Oper
Oper at
ator's manual
or's manual ........................................ .22
Op
Op timised acceler
timised acceler ation
ation................................ 159
Outside mirr
Outside mirr ors
ors
Au tomatic anti-dazzle mode.................. .141
Au tomatic mir rorfo lding function........... 143
Blind Spot Assist.................................... 214
Fo lding in/out........................................1 40Memory function................................... 116
Pa
rking position..................................... 142
Setting................................................... 140
Wa rning lamp......................................... 214
Ov
Ov er erhead contr
head contr ol panel
ol panel.................................. 12
Ov
Ov er
ervie
vie w of airbags
w of airbags........................................ 47 P
P
P
P aint code
aint code................................................... 358
P
P anel heating
anel heating............................................... 111
P
P ar
ar k position
k position
DIRECT SELECT le ver............................. 169
Engaging................................................ 170
P
P ar
ar king
king, PARKTRONIC
Electric parking brak e............................ 229
P
P ar
ar king aid
king aid, Active Parking
Assist, PARKTRONIC.................................... 229
P
P ar
ar king Assist
king Assist, Active Parking Assist.............2 33
P
P ar
ar king Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC
Ac tivating............................................... 232
Ad justing warning tones......................... 233
Deactivating........................................... 232
Fu nction................................................ 229 Ind
ex
465 465