battery MERCEDES-BENZ E-CLASS SALOON 2021 Repair Manual

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
Stop vehicle Leave engine
running Wait Transmission
cooling *T
he transmission is overheating. Pulling away may be temp orarily impaired or not possible. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Leavethe engine running. #
Wait until the display message disappears before pulling away.
Auxiliary battery malfunc-
tion (white displ aymessage) *V
Vehicles wit ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: The auxiliary battery forth e transmission is no longer being charge d. #
Consult a quali/ed specialist workshop. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: untilthen, alw ays select park position 005Dbefore you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake.
Auxiliary battery malfunc-
tion (red display message) *V
Vehicles wit ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: The auxiliary battery forth e transmission is no longer being charge d. #
Consult a quali/ed specialist workshop. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: untilthen, alw ays select park position 005Dbefore you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake. Display messages and
warning/indicator lamps
463
463

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
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 35). #
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 and0050
0050Solutions
Solutions
003D
12 V battery See Owner's
Manual *T
hevehicle is o. and thech arge leve l is too lo w. #
Switch o. elect rical consume rsthat are not requ ired.
To charge the 12 V batter y: #
Leavetheve hicle running for a few minutes, or drive an extended distance. #
Plug-in h Plug-in h ybr
ybrid:
id:charge the 12 V battery while stationar y,or drive an extended distance.
*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. 486
486
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
003D
See Owner's Manual *T
he 12 V battery is not being charge d.
* N
NOOTE
TE Possible 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.
003D
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. Displ
aymessages and warning/indicator lamps
487
487

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
003D
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.
00D7 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.
00D9
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: 488 488
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions #
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 385).
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. T T
yr
yr e pr
e pr essur
essur e monit
e monit or
or Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences and0050
0050Solutions
Solutions
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being received. The tyre pressure monitoring system is temp orarily una vailable.
The tyre pressure monitoring system will restart au tomatically as soon as the cause has been recti/ed. #
Drive on.
Tyre press. monitor inoper-
ative *T
he tyre pressure moni toring system is malfunctioning. Display messa
ges and warning/indicator lamps
489 489

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
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 365). #
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. 506
506
Displ
aymessages and warning/indicator lamps

Air v
Air v
ents
ents
see Air vents
Air
Air -conditioning syst
-conditioning syst em
em
see Climate cont rol
Air
Air -r
-recir
ecir culation mode
culation mode................................. .153
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 367
Airbag
Airbag Activation................................................ 44
Au tomatic co-driver airbag shuto............ .53
Fr ont airbag (driver, front passenger)........ 50
Installation locations................................ 50
Knee airbag............................................. 50
Overview.................................................. 50
PA SSENGER AIR BAG indicator la mps...... 54
Pr otection................................................ 51
Re duced pr otection.................................. 52
Side airbag.............................................. 50
Wi ndow airbag......................................... 50
Air0 ow
Air0ow
Setting................................................... 150
Alar Alar m syst
m syst em
em
see ATA (anti-theT alarm system) All-wheel dr
All-wheel dr
ive
ive
see 4M ATIC
Ambient lighting
Ambient lighting Setting (MBUX multimedia system)........ .143
Andr
Andr oid A
oid A uto
uto
see Smartphone integ ration
Animals
Animals Pets in theve hicle.................................... 77
Anti-loc
Anti-loc k br
k braking syst
aking syst em
em
see ABS (Anti-lock Braking System)
Anti-skid c
Anti-skid c hains
hains
see Sn owchains
Anti-t
Anti-theT heTprot
pr otection
ection
Ad ditional door loc k................................. 81
Immobiliser.............................................. 99
Anti-t
Anti-theT heTprot
pr otection
ection
see ATA (anti-theT alarm system)
Anticipat
Anticipat or
ory occupant pr ot
y occupant pr otection
ection
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus) Apple CarPlay
Apple CarPlay ®
®
see Smartphone integ ration
Assist
Assist ance syst
ance syst ems
ems
see Driving saf ety sy stem
ASS YS
ASS YST PL
T PL US
US
Battery disconnection period s................ 360
Displaying the service due dat e.............. 359
Fu nction/no tes...................................... 359
Re gular maintenance work..................... 359
Special service requ irements................. 359
AT
ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alarm........................... 100
Fu nction................................................ 100
Interior pr otection function.....................1 01
Priming/deactivating interior pr otec-
tion........................................................ 102
Priming/deactivating tow- awa y pro-
te ction................................................... 101
To w- awa y protection function................. 100
A
A TTENTION ASSIST TTENTION ASSIST
Function................................................ 223
Setting.................................................. .224
System limitations.................................. 223 518
518
Index

A
A
tt
tt ention assist
ention assist ant
ant
see ATTENTION ASSIST
A
A ut
ut hor
hor ised w
ised w ork
orkshop
shop
see Quali/ed specialist workshop
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........... 53
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 ................................ 135
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...... 54
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function
Ac tivating/deactivating.......................... 149
A
A ut
ut omatic seat adjus
omatic seat adjustment tment
Setting................................................... 110
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 186
Drive prog ram displa y............................ 184
Drive prog rams...................................... 183 DY
NAMIC SELECT switch....................... 183
Engaging drive position.......................... 188
Engaging reve rsege ar............................ 187
Kickdown............................................... 189
Manual gear changing........................... .188
Selecting park position........................... 187
St eering wheel gearshiT paddles............ 188
Tr ansmission position displ ay................. 186
Tr ansmission position s........................... 186
Axle load
Axle load
Perm issible............................................ 415
Tr ailer operatio n.................................... .432 B B
Bad w
Bad w eat
eather light
her light ......................................... 138
Ball neck
Ball neck Extending/r etra cting............................. .273
Extending/r etra cting (MBUX multime-
dia system)............................................ 275
B
B AS (Br
AS (Br ak
ake Assis
e Assis t Syst
t System)
em)........................... 218
Batt
Batt ery
ery
Re mo tecont rol (stationary heater)......... 161
Batt
Batt ery
ery
see High-voltage battery Batt
Batt
er
ery (high-v
y (high-v olt
oltag
age on-boar
e on-boar d electr
d electrical
ical
syst
syst em)
em)
see High-voltage battery
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 80
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)..................... .169
No tes..................................................... 381
No tes (starting assis tance and charg-
ing)........................................................ 383
Batt
Batt er
ery oper
y oper ation
ation......................................... 164
Belt
Belt see Seat belt
Bicy
Bicy cle r
cle r ack
ack
Load capacit y........................................ 431
Tr ailer operatio n.................................... .278
Blind Spo
Blind Spo t Assist
t Assist
Ac tivating/deactivating.......................... 247
Fu nction................................................ 245
System limi tations.................................. 245
Blow
Blow er
er
see Clima tecont rol Index
519
519

EAS
Y-PA CK bo otbox.............................. 372
Exterior lighting...................................... 370
Head-up display..................................... 372
High-pressure cleaner............................ 368
Pa int...................................................... 368
Plastic trim............................................3 72
Re alwo od/trim elements..................... .372
Re versing camera..................................3 70
Ro of lining............................................. 372
Seat belt................................................ 372
Seat co ver............................................. 372
Sensors................................................. 370
St eering wheel....................................... 372
Ta ilpipes................................................ 370
Tr ailer hitc h............................................ 370
Ve hicle soc ketfo rth e high-voltage
battery................................................... 370
Wa shing byhand.................................... 368
Wheels/rims.......................................... 370
Wi ndo ws................................................ 370
Wi per blades.......................................... 370
Car
Car pe pet (Car
t (Car e)
e)............................................... 372
Changing g
Changing g ears
ears
Manually................................................ 188
Changing hub caps
Changing hub caps ....................................... 405 Char
Char
ging
ging
Char geleve l displa y............................... 208
Charg ing cable control panel.................. 201
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 207
Indica tor lamps on vehicle soc ket........... 202
No tes - charging station (mode 3)......... .199
No tes - mains soc ket (Mode 2)............... 198
No tes - wallbox (mode 3)........................ 199
No tes on charging the high-voltage
battery................................................... 196
No tes on wireless chargin g.................... 130
On-boa rdelectrical system battery
(12 V).................................................... 385
Setting the maximum possible charg-
ing cur rent (mains soc ket)...................... 200
St arting thech arging process................. 204
St ow ing thech arging cable.................... 196
USB port............................................... .130
Ve hicle soc ket........................................ 202
Char Char ging cable ging cable
Control panel......................................... 201
St ow ing................................................. 196
Char
Char ging t
ging t he high-v
he high-v olt
oltag
age batt
e batt ery
ery
St arting thech arging process................. 204 Chassis
Chassis
Damping characteristics........................ .250
DY NAMIC BODY CONTROL.................... 250
Chassis lev
Chassis lev el (AIR BOD
el (AIR BOD Y C
Y CONTR
ONTR OL)
OL)
Settin g................................................... 251
Child safe
Child safe ty lock
ty lock
Re ar door................................................ .75
Re ar side wind ows................................... 77
Child seat
Child seat
Appr oval catego ries.................................63
At tach ing (no tes)..................................... .62
Basic instructions.................................... 58
Fr ont passenger seat (no tes).................... 73
Fr ont passenger seat (without auto-
matic airbag shuto.)............................... .73
ISOFIX/i-Size (/tting).............................. .66
No tes on risks and danger s...................... 59
Re commendations forch ild restraint
systems................................................... 61
Seats suitable for belt-secured child
re straint systems..................................... 70
Seats suitable for i‑Size child restraint
systems................................................... 66
Seats suitable for ISOFIX child
re straint systems..................................... 65 Index
521 521

Engaging park position automaticall
y...... 187
Fu nction................................................ 186
Selecting park position........................... 187
Displa
Displa y (car
y (care)
e)............................................... 372
Displa
Displa y (MBUX multimedia syst
y (MBUX multimedia syst em)
em)
Home sc reen......................................... 313
Operating.............................................. 314
Displa
Displa y (on-boar
y (on-boar d com
d comput
puter)
er)
Displa yson the inst rument displa y......... 286
Displa
Displa y in t
y in the windscr
he windscr een
een
see Head-up display
Displa
Displa y message
y message
Calling up (on-board computer).............. 433
No tes..................................................... 433
Displa
Displa y messag y messag es
es
ç - - - km/h.................................... .470
00CB - - - km/h..................................... 469
h - - - km/h..................................... 469
003D 12 V battery See Owner's Man-
ual......................................................... 486
00D7 48 V battery See Owner's Man-
ual......................................................... 488 ò
Acoustic presence indicator
inoperative............................................ .447
: Active Light System inoperative..... 441
0099 AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 496
0099 AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 495
0099 AdBlue system fault Engine
start not possible................................... 496
0099 AdBlue system fault See Own-
er's Manual............................................ 495
00B3 Add 1 litre engine oil when next
re fuelling ............................................... 497
é ATTENTION ASSIST inoperati ve..... 468
é ATTENTION ASSIS T:Take a
break!.................................................... 468
: Automatic driving lights inoper-
ative...................................................... 441 00D7
Battery overheated Stop, every-
body out! Outdoors if possible ................ 449
Á Change key batteries .................... 438
00E5 Charger cable connected .............. 447
004D Check brake 0uid le vel.................. 467
00B3 Check eng. oil le v.when next
re fuelling ............................................... 497
ï Check trailer hitch lo ck(white
display message) .................................... 453
0077 Check tyre(s) ................................ 490
003A Clean the fuel /lter....................... 460
ÿ Coolant Stop vehicle Switch
engine o............................................... 459
0025 currently una vailable See Own-
er's Manual............................................4 81
00E5 currently una vailable See Own-
er's Manual............................................4 82
00B3 Engine oil le vel cannot be meas-
ured....................................................... 499
00B3 Engine oil le velRe duce oil le vel..... 498 524 524
Index