battery MERCEDES-BENZ E-CLASS SALOON 2022 Repair Manual

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Device detected at diagnos-
tics connection See Own-
er's Manual *T
hevehicle functions forfa ult de tection are restric ted.
At least one of the main functions of the Mercedes me connect system is malfunctioning. #
Obser vethe no tes on the diagnostics connection (/ page 37). #
Consult a quali/ed specialist workshop. Batt Batt
ery
ery Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
#
12 V battery See Owner's
Manual *T
hevehicle is o. and the state of charge ofthe 12 V battery is too lo w. #
Switch o. elect rical consume rsthat are not requ ired. #
Drive for 30–60 mins.
or #
Char gethe 12 V battery when stationary (/ page 367).
*I fth e message appears while theve hicle is switched on, this indicates an on-board electrical system malfunction. #
Consult a quali/ed specialist workshop.
#
See Owner's Manual *T
he 12 V battery is not being charge d. Display messages and
warning/indicator lamps
467 467

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
* NO
NOTE
TEPossible engine damage if you continue driving #
Do not continue driving under any circumstances. #
Consult a quali/ed speciali stwo rkshop. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. #
Consult a quali/ed specialist workshop.
#
Stop vehicle See Owner's
Manual *T
he 12 V battery is no lon ger being charge d and the state of charge istoo lo w.
* N
N O OTE
TE Possible engine damage if you continue driving #
Do not continue driving under any circumstances. #
Consult a quali/ed speciali stwo rkshop. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Switch o. theve hicle. #
Consult a quali/ed specialist workshop. 468
468
Displ
aymessages 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
469 469

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 367).
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. 470 470
Display message
s andwarning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Notethe messages on the instrument displa y.
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 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 346). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. 488
488
Displ
aymessages and warning/indicator lamps

Apps
Apps
Mercedes me calls................................. 320
Mercedes me connect........................... 323
Assist
Assist ance syst ance syst ems
ems...................................... 218
ASS YS
ASS YST PL
T PL US
US
Battery disconnection periods................ 341
Service inter val display.......................... 340
Service requ irements............................. 340
ATA
ATA , Anti-theT pr otection
Deactivating the alar m........................... 103
Fu nction................................................ 103
Interior pr otection.................................. 105
To w- awa y protection...................... 103, 104
A
A TTENTION ASSIST
TTENTION ASSIST
Function................................................ 224
Setting.................................................. .226
A
A ut
ut hor
hor ised w
ised w ork
orkshop
shop ...................................... 38
A
A ut
ut omatic car w
omatic car w ash
ash...................................... 348
A
A ut
ut omatic car w
omatic car w ash mode
ash mode............................ 348
A
A ut
ut omatic climat
omatic climat e contr
e control
ol............................ 155
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol,Ac tive Dis-
ta nce Assist DISTRONIC, DISTRONIC.......... .229
A
A ut
ut omatic dr
omatic dr iving lights
iving lights................................ 138 A
A
ut
ut omatic emerg
omatic emerg ency call
ency call, Mercedes-
Benz emer gency call system......................... 329
A
A ut
ut omatic engine st
omatic engine st ar
art/st
t/st op
op
ECO start/stop function........................ 178
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.................................................. 55
PA SSENGER AIR BAG indicator la mps...... 56
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function ................. 152
A
A ut
ut omatic seat adjus
omatic seat adjustment tment........................... 113
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
Changing gear........................................ 189
DIRECT SELECT le ver............................. 189
Drive prog rams...................................... 186
DY NAMIC SELECT switch....................... 186
Engaging drive position.......................... 191
Kickd own.............................................. .192
Manual shiTing...................................... 191
St eering wheel gearshiT paddles............ 191
Tr ansmission position displ ay................. 189
Tr ansmission position s........................... 189
A A ut
ut onomous br
onomous br aking
aking.................................... 240
Axle load
Axle load Trailer operatio n.................................... .412 B
B
Bad w
Bad w eat
eather light
her light ......................................... 141
Ball neck
Ball neck Extending/r etra cting............................. .274
Extending/r etra cting (MBUX multime-
dia system)............................................ 276
Tr ailer coupling...................................... 277
B
B AS AS, Brake Assist System............................. 220
Batt
Batt er
ery (12 V batt
y (12 V batt er
ery)
y)
Charging................................................ 367
No tes..................................................... 363
Re placing.............................................. .368
St arting assis tance............................... .365
Batt Batt er
er y (high-v
y (high-v olt
oltag
age on-boar
e on-boar d electr
d electrical
ical
syst
syst em)
em)........................................................ 409
Batt
Batt er
ery (ke
y (ke y)
y).................................................. 83
Batt
Batt er
ery (r
y (r emot
emot e contr
e contr ol)
ol)............................... 163
Batt
Batt er
ery (st
y (st art
arter batt
er batt er
ery)
y)
Charging via Remo teOnline................... 172
Belt
Belt ................................................................ 47
Bicy
Bicy cle r
cle r ack
ack
Load capacity........................................ 411 500
500
Index

High-pressure cleaner............................ 349
Pa int...................................................... 350
Plastic trim............................................3 53
Re alwo od/trim elements..................... .353
Ro of lining............................................. 353
Ta ilpipes................................................ 351
Tr ailer hitc h............................................ 351
Ve hicle interior....................................... 353
Ve hicle soc ketfo rth e high-voltage
battery................................................... 351
Wa shing byhand.................................... 350
Car
Car ing f ing f or plas
or plas tic tr
tic trim
im................................... 353
Car
Car ing f
ing f or r
or real w
eal w ood
ood.................................... .353
Car
Car ing f
ing f or t
or the st
he st eer
eer ing wheel
ing wheel........................ 353
Car
Car ing f
ing f or tr
or trim elements
im elements............................... 353
Car
Car ing f
ing f or wheels
or wheels......................................... 351
Centr
Centr al loc
al locking syst
king syst em
em
Button..................................................... 85
Ke y.......................................................... 82
Charg
Charg e lev e level display
el display .................................... .212
Charg
Charg e lev
e level/c
el/charg
harge display
e display ......................... 212
Char
Char ging
ging
12 V battery........................................... 367 Char
geleve l displa y............................... 212
Charg ing cable control panel.................. 204
Charging station, mode 3....................... 203
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 211
Indica tor lamps on vehicle soc ket........... 206
Mains soc ket, mode 2............................ 202
No tes on charging the high-voltage
battery................................................... 200
Setting thech arging process.................. 307
Setting the maximum permissible
ch arging cur rent (mains soc ket)............. 204
St arting thech arging process................. 208
St ow ing thech arging cable.................... 200
USB port............................................... .134
Ve hicle soc ket........................................ 206
Wa llbox, mode 3.................................... 203
Wi relessly charging a mobile phon e........ 134
Char
Char ging cable ging cable
Control panel......................................... 204
St ow ing................................................. 200
Chassis Chassis Damping characteristics........................ .251
DY NAMIC BODY CONTROL.................... 251 Chassis lev
Chassis lev el (AIR BOD el (AIR BOD Y C
Y CONTR
ONTR OL)
OL)
Settin g................................................... 253
Chec
Chec king t
king t he coolant lev
he coolant lev el
el........................... 346
Child safe
Child safe ty lock
ty lock
Re ar door................................................ .78
Side window (rear)................................... 79
Child seat
Child seat
Approva l categories................................. 65
Basic inst ructions.................................... 60
Fi tting ISOFIX/i-Size................................ 69
Fr ont passenger seat............................... 75
Re commendations forch ild restraint
systems................................................... 64
Ris ks/dan gers......................................... 61
Seats suitable for belt-secured child
re straint systems..................................... 72
Seats suitable for i‑Size child restraint
systems................................................... 68
Seats suitable for ISOFIX child
re straint systems..................................... 67
Securing.................................................. 65
Securing tothe front passenger seat
with the seat belt..................................... 76
Securing tothere ar seat with the
seatbelt................................................... 74 502 502
Index

To
pTe ther................................................ 71
Wi thout automatic front passenger
airbag shuto........................................... .75
Childr
Childr en
en
Av oiding dangers in theve hicle............... .61
Basic instructions.................................... 60
Chock
Chock................................................. .386, 387
City lighting
City lighting.................................................. 141
Clean v
Clean v ar
arnish
nish............................................... 350
Cleaning
Cleaning
Air/water duct....................................... 348
Au tomatic car wash.............................. .348
Car parts............................................... 351
Decorative foil........................................ 350
High-pressure cleaner............................3 49
Pa int...................................................... 350
Ve hicle interior....................................... 353
Ve hicle soc ketfo rth e high-voltage
battery................................................... 351
Cleaning car
Cleaning car pe pets
ts..........................................3 53
Cleaning seat cov
Cleaning seat cov ers
ers.................................... 353
Climat
Climat e contr
e contr ol
ol
A/C function......................................... 155 Ac
tivating/deactivating.......................... 154
Ac tivating/deactivating the A/C func-
tion (control panel)................................. 154
Ac tivating/deactivating the synchro-
nisation function (control panel)............. 155
Au tomatic control................................. .155
Calling up the air conditioning menu....... 154
Climate style function............................ 155
Demisting the windscreen...................... 153
Demisting windo ws................................ 156
Fr ag rance system.................................. 156
Fr ont air vents........................................ 165
Glo vebox air vent.................................. 165
Immediate pre-entry clima tecont rol....... 160
Inse rting/removing the 0acon (fra-
gr ance system)...................................... 157
Ionisatio n.............................................. .156
No tes..................................................... 153
Pre-ent ryclimate cont rolfo r depar-
ture time................................................1 59
Pre-entry climate control using theke y... 158
Re ar air vents......................................... 165
Re sidual heat......................................... 156
Setting (MBUX multimedia system)......... 154
Setting the air distribution...................... 153
Setting the air0ow.................................. 153 Setting
the climate style......................... 155
Setting theve hicle interior temp era-
ture....................................................... 153
St ationary heater/ ventilation................. 161
Switching air-reci rculation mode
on/o.................................................... 156
Switching there ar wind owheater
on/o.................................................... 153
Syn chronisation function........................ 156
THERMATIC cont rol panel...................... 153
THERMOTRONIC control panel............... 153
Ve ntilation with com fort openin g.............. 96
Climat
Climat e s e stytyle
le
Fu nction................................................ 155
Setting.................................................. .155
C
C OC papers
OC papers , Certi/cate of conformity..........3 94
Coc
Coc kpit
kpit
Dashboar d........................................... 6, 10
Co.ee
Co.ee cup symbol
cup symbol, ATTENTION ASSIST........ 224
Collision det
Collision det ection (park
ection (parked v
ed vehicle)
ehicle)
Information............................................ 216
Combination switch
Combination switch
Lights.................................................... 139
Wi ndsc reen wiper s................................. 147 Index
503
503

Displa
Displa
y (on-boar
y (on-boar d com
d comput
puter)
er)
Displa yson the inst rument displa y......... 288
Displa
Displa y message
y message
Calling up in the on-board computer.......4 13
Displa
Displa y messag
y messag es
es
ç - - - km/h..................................... 451
È - - - km/h..................................... 450
h - - - km/h..................................... 450
# 12 V battery See Owner's Man-
ual......................................................... 467
Û 48 V battery See Owner's Man-
ual......................................................... 469
ò Acoustic presence indicator
inoperative............................................ .427
: Active Light System inoperative..... 421
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 477
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 477 ¯
AdBlue system fault Engine
start not possible................................... 478
¯ AdBlue system fault See Own-
er's Manual............................................ 477
5 Add 1 litre engine oil when next
re fuelling ............................................... 479
é ATTENTION ASSIST inoperati ve..... 449
é ATTENTION ASSIS T:Take a
break!.................................................... 449
: Automatic driving lights inoper-
ative...................................................... 421
Û Battery overheated Stop, every-
body out! Outdoors if possible ........ 429, 469
Á Change key batteries .................... 418
è Charger cable connected .............. 427
J Check brake 0uid le vel.................. 448
5 Check eng. oil le v.when next
re fuelling ............................................... 478
ï Check trailer hitch lo ck(white
display message) .................................... 434 h
Check tyre(s) ................................ 472
! Clean the fuel /lter....................... 441
ÿ Coolant Stop vehicle Switch
engine o............................................... 440
! currently una vailable See Own-
er's Manual............................................4 62
÷ currently una vailable See Own-
er's Manual............................................4 63
5 Engine oil le vel cannot be meas-
ured....................................................... 481
5 Engine oil le velRe duce oil le vel..... 479
5 Engine oil le velSt op vehicle
Switch engine o.................................... 479
5 Engine oil pressure Stop Switch
o. engine.............................................. 480
ä Fault Drive at max. 80 km/h ......... 460
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 15
& inoperative Battery low................. 424
& inoperative Char geHV battery...... 425 Ind
ex
505 505

&
inoperative High-voltage battery
ch arging inco mplete ............................... 425
& inoperative Refuel vehicle............. .425
& inoperative See Owner's Man........ 424
! inoperative See Owner's Manual.. .463
÷ inoperative See Owner's Manual.. .464
T inoperative See Owner's Manual.. .465
G Inoperative................................... 466
: Intelligent Light System inopera-
tive........................................................ 422
Á Key being initialised Please wait.... 420
Á Key not de tected (red display
message).............................................. .419
Á Key not de tected (white display
message).............................................. .419
: LeT dipped beam (e xample).......... 420
6 LeT windowbag malfunction
Consult workshop (e xample).................. 416
¢ Lowe ring....................................... 461 :
Malfunction See Owner's Man-
ual ......................................................... 421
Û Malfunction Visit workshop ........... 430
d Malfunction.................................. 431
Û Malfunction.................................. 430
ð Maximum speed exceeded ............ 452
Ø ................................................... .476
ç O.................................................4 51
ë O.................................................4 49
ï Operation only possible in
transmission position P .......................... 433
! Parking brake See Owner's
Manual..................................................4 45
d Performance se verely limited........ 431
É Please reduce speed .................... .461
Ý Please wait 48 V battery charg-
ing......................................................... 470
6 Please wait Depressurising tank .... 432
& Pre-entry clima tecont rol (via
ke y) available again aTer engine start..... 426 &
Pre-ent ryclimate cont rol (via
ke y) inoperati veHV-battery low .............. 426
_ Rear leT seat backrest not
loc ked (Example) .................................... 438
h Rectify tyre pressure ..................... 472
Ø Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 475
! Release parking brake ...................447
¸ Replace air cleaner ....................... 441
Á Replace key.................................. 418
8 Reser vefuel le vel.......................... 441
6 Restraint sys. malfunction Con-
sult workshop ....................................... .414
# See Owner's Manual..................... 467
Ù Steering malfunction Increased
ph ysical e.ort See Owner's Manual.......4 36
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 436
d Stop Switch engine o.................. .431 506 506
Index