service MERCEDES-BENZ E-CLASS SALOON 2020 Repair Manual

Display messages
Possible causes/consequences and M
MSolutions
Active Brake Assist Func-
tions limited See Owner's
Manual *
Ve hicles with the Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS are temp orarily una vailable or only partially available.
Ve hicles without the Driving Assistance Package: Active Brake Assi stistemp orarily una vailable or only partially
av ailable. #
Consult a qualified specialist workshop. Mercedes me connect
Display messages
Possible causes/consequences and M MSolutions
Mercedes me connect
Services limited See Own-
er's Manual *T
hevehicle functions forfa ult de tection are restricted.
At least one of the main functions of the Mercedes me connect sy stem is malfunctioning. #
Obser vethe no tes on the diagnostics connection (/ page 29). #
Consult a qualified specialist workshop.
G Inoperative *A
t least one of the main functions of the Mercedes me connect sy stem or of the SOS emer gency call sy stem is
malfunctioning. #
Consult a qualified specialist workshop. 41 0
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. Do not continue
driving. #
Notethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop.
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 305). Display messages and
warning/indicator lamps 429

Ac
tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 204
Display ................................................ 204
Fu nction .............................................. 204
Ac tive Steering Assist ............................ .206
Ac tivating/deactivating ...................... .208
Ac tive Emergency Stop Assist .............2 08
Fu nction .............................................. 206
Sy stem limits ....................................... 206
Ac tive Traf fic Jam Assist
Ac tivating/deactivating ...................... .209
Fu nction .............................................. 209
Ad aptive brake lights ..............................19 6
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive Highbeam Assist
Fu nction ............................................... 131
Switching on/off ................................. 13 2
Ad aptive Highbeam Assist Plus
Fu nction .............................................. 13 2
Switching on/off ................................. 13 4Ad
Blue ®
.................................................... 360
Ad ditives .............................................3 60
Capacity .............................................. 360
No tes ................................................... 176
Purity ................................................... 360
To pping up ...........................................1 77
Ad ditional door lo ck.................................. 74
Ad diti ves.................................................. 361
Ad Blue ®
............................................... 360
Engine oil ............................................. 361
Fu el ..................................................... 358
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
ADS PLUS damping sy stem
see AIR BODY CONTROL
Ad versewe ather light ............................ .131
Af ter-sales service centre
see ASS YST PLUS AIR
BODY CONT ROL................................ .211
Setting ................................................. 212
Suspension .......................................... 211
Air conditioning menu Calling up ............................................ 14 4
Air distribution Setting ................................................ .143
Setting (MBUX multimedia sy stem) ..... 14 5
Air freshener sy stem
see Frag rance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIR BODY CONTROL
Air vents ................................................... 15 2
Ad justing (front) .................................. 15 2
Ad justing (rear) .................................... 15 3
Glo vebox .............................................1 53
Air vents
see Air vents 440
Index

Air-conditioning sy
stem
see Climate control
Air-recirculation mode ............................14 6
Air-water duct .......................................... 307
Ke eping free ........................................3 07
Airbag ........................................................ .41
Ac tivation .............................................. 36
Fr ont airbag (driver, front passenger) ..... 41
Ins tallation locations .............................. 41
Knee airbag ............................................ 41
Overview ................................................ 41
PA SSENGER AIR BAG indicator lamp .... .46
Pr otection ..............................................42
Re duced pr otection ...............................43
Side airbag ............................................. 41
Wi ndow airbag ....................................... 41
Airflow Setting ................................................ .143
Alarm sy stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC Ambient lighting
Setting (multimedia sy stem) ................1 35
Android Auto
see Smartphone integration
Animals Pets in theve hicle ................................. 69
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft pr otection
Ad ditional door lock ...............................74
Immobiliser ........................................... 93
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay ®
see Smartphone integration
Assistance sy stems
see Driving saf ety sy stem ASS
YST PLUS ........................................... 299
Battery disconnection pe riods .............3 00
Displ aying the service due date ........... 299
Fu nction/no tes ................................... 299
Re gular maintenance work .................. 299
Special service requ irements .............. 299
ATA (anti-theft ala rmsystem) .................. 93
Deactivating the alarm .......................... 94
Fu nction ................................................ 93
Fu nction of interior pr otection ............... 94
Priming/deactivating interior pr otec‐
tion ........................................................ 95
Priming/deactivating tow- aw ay pro‐
te ction ................................................... 94
To w- aw ay protection function ................94
AT TENTION ASSI ST.......................... 230, 231
Fu nction .............................................. 230
Setting ................................................. 231
Sy stem limitations ...............................2 30
At tention assistant
see ATTENTION ASSIST
Au thorised workshop
see Qualified specialist workshop Index
441

D
Dashboa rd
see Cockpit
Data acquisition Vehicle ................................................... 31
Data storage
Electronic control units .......................... 31
Online services ...................................... 33
Ve hicle ................................................... 31
Deactivating the ala rm(ATA ).................... 94
Deale rship
see Qualified speciali stwo rkshop
Declaration of conformity Electromagnetic compatibility ............... 24
Jack ...................................................... .27
TIREFIT kit ............................................. 28
Wi reless vehicle components ................24
Decorative foil (cleaning instructions)
.................................................................. .309
DeNO x agent
see AdBlue ® De
stination entry .................................... .271
Entering a POI or address .................... 271
De tecting inat tentiveness
see ATTENTION ASSIST
Diagnostics connection ............................29
Diesel Low outside temp eratures ...................3 58
No tes .................................................. 358
Digital Owner's Manual .............................18
Digital Vehicle Keyst icker
Locking theve hicle ................................ 76
St arting theve hicle ............................. 15 6
Unlocking theve hicle ............................76
Dinghy towing
see Tow- bar sy stem
Dipped beam Setting .................................................1 34
DIRECT SELECT le ver............................... 16 8
Engaging drive position ....................... 17 0
Engaging neutral .................................. 16 9
Engaging pa rkposition ........................ 17 0
Engaging pa rkposition automatically .. 17 0
Engaging reve rsege ar ........................ .169 Fu
nction .............................................. 16 8
Display (care) .......................................... .312
Display (MBUX multimedia sy stem)
Home screen ...................................... .257
Display (multimedia sy stem) ................ .258
Operating ............................................ 258
Display (on-board comp uter)
Displ ays on the multifunction display .. 252
Display message .....................................3 69
Calling up (on-board computer) ........... 369
No tes .................................................. 369
Display messages ¯ - - - km/h ................................... 394
ç - - - km/h ................................... 395
È - - - km/h ................................... 394
# 12V battery See Owner's Man‐
ual ........................................................ 411
Û 48 V battery See Owner's Man‐
ual ........................................................ 412
: Active Light Sy stem inopera‐
tive .......................................................3 76446
Index

Blind Spot Assi
stnot available when
to wing a trailer See Owner's Manual ...4 02
Cannot start engine See Owner's
Manual ................................................ .413
Check tyre pressures then restart
Ru n Flat Indicator ................................. 41 8
Cruise cont rol and Limiter inope ra‐
tive ...................................................... 394
Cruise control inope rative ................... 394
Cruise control off ................................ 394
Fr ont-passenger airbag disabled See
Owner's Manual ................................... 371
Fr ont-passenger airbag enabled See
Owner's Manual ................................... 371
Haza rdwa rning lamps malfunction‐
ing ...................................................... .377
Limiter inoperative .............................. 395
Limiter passive .................................... 394
Mercedes me connect Services limi‐
te d See Owner's Manual ......................41 0Mo
tor can be star ted again .................. 413
N permanently active Risk of vehicle
ro lling .................................................. 388
Only select Park (P) when vehicle is
st ationary ............................................ 386
Place theke y in the mar ked space
See Owner's Manual ............................374
PRE-SAFE impulse side inoperative
See Owner's Manual ............................372
PRE-SAFE inoperative See Owner's
Manual ................................................ 372
Re duce speed ...................................... 417
Re versing not poss. Consult work‐
shop ....................................................3 88
Risk of vehicle rolling Driver door
open and transmission not in P ...........387
Ru n Flat Indicator inope rative .............. 41 8
Speed limit (winter tyres) XXX km/h ... 396
St op vehicle Lea veengine running
Wa itTransmission cooling ...................389 To
shift out of P or N,depress brake
and start engine .................................. 387
To switch off the engine, press the
St art/ Stop button for at least 3 sec‐
onds or 3 times. .................................. 384
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ...................... 401
Tr af fic Sign Assi stinope rative ............. 401
Tr ansmission Malfunction Stop ........... 388
Ty re press. monitor cur rently una vail‐
able ...................................................... 414
Ty re press. monitor inoperative ............414
Ty re press. monitor inoperative No
wheel sensors ...................................... 414
Ty re pressure Check tyres ....................417
Ty re(s) ove rheated ...............................4 16
Wi thout changing gear, consult work‐
shop ....................................................3 88
Display on the windscreen
see Head-up display 450
Index

Mercedes me app
Information .......................................... 284
Mercedes me calls Arranging a service appointment ........ 282
Calling the Mercedes-Benz Cus tomer
Centre ................................................. 281
Calling the Mercedes-Benz Cus tomer
Centre af ter auto matic accident or
breakdown de tection ........................... 281
Consenting todata transfer .................2 82
Information .......................................... 281
Making a call via theove rhead con‐
trol panel ............................................. 280
Tr ans ferred data ..................................2 83
Mercedes me connect Accident and Breakdown Manage‐
ment .................................................... 279
Information .......................................... 278
Tr ans ferred data ..................................2 80
Mercedes-AMG vehicles
No tes ................................................... 154
Mercedes-Benz emer gency call sys‐
te m ........................................................... 287
Au tomatic emergency call ................... 288 Information .......................................... 287
Information on data transfer ............... 289
Manual emer gency call ........................ 289
Overview ............................................. 287
Self-diagnosis (Russia) ........................ 290
St arting/ending ERA-GLONASS test
mode .................................................. .290
Mercedes-Benz Link see Smartphone integration
Mercedes-Benz service centre see Qualified specialist workshop
Message (multifunction display) see Display message
Message memory .................................... 369
Mir rors
see Outside mir rors
Mobile phone Frequencies ......................................... 352
Tr ansmission output (maximum) ........ .352
Wi reless charging ................................ 124
Mobile phone see Smartphone integration
see Telephone Model series
see Vehicle identification plate
MOExtended tyres ................................... 316
Mo torw ay mode ....................................... 13 0
MULTIBEAM LED ...................................... 12 9
Multifunction display Overview of the displa ys...................... 252
Multifunction steering wheel
Overview of buttons ............................ 250
Multifunction steering wheel
see Steering wheel
Multimedia sy stem
Collision de tection (pa rked vehicle) ..... 184
Multimedia sy stem
see Display (multimedia sy stem)
see MBUX Interior Assis tant (multi‐
media sy stem)
see MBUX multimedia sy stem
see Touchpad N
Na vigation
No tes .................................................. 268 Index
459

Overview .............................................
270
Showing/hiding the menu ...................2 69
Switching on ....................................... 269
Na vigation
see Destination entry
see Map
see Route
Ne arField Communication (NFC)
Locking theve hicle (Digital Vehicle
Ke yst icke r) ............................................ 76
St arting theve hicle (Digital Vehicle
Ke yst icke r) .......................................... 15 6
Un locking theve hicle (Digital Vehicle
Ke yst icke r) ............................................ 76
Ne utral
Engaging .............................................. 16 9
Note s........................................................ 15 9
Optimised acceleration ........................ 15 9O
Occupant saf ety
see Airbag
see Automatic front passenger front
airbag shutoff see
Pets in theve hicle
see PRE-SAFE ®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
Impulse Side
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
see Restra int sy stem
see Seat belt
Oil see Engine oil
On-board computer ................................. 250
Displaying the service due date ........... 299
Head-up display menu .........................2 53
Multifunction display ........................... 252
Operating ............................................ 250
Overview of menus .............................. 250
On-board diagno stics inter face
see Diagno stics connection
On-boa rdelectronics
Engine electronics .............................. .351
No tes ................................................... 351
Tw o-w ayradios .................................... 351
Online services Data storage .......................................... 33 Online services
see In-Car Of fice
Open-source so ftwa re .............................. 34
Opening the bo otlid using your foot
HANDS-FREE ACCESS .......................... .82
Operating fluids
Ad Blue ®
............................................... 360
Ad ditives (fuel) .................................... 358
Brake fluid .......................................... .362
Coolant (engine) .................................. 363
Engine oil ............................................. 361
Fu el (diesel) ......................................... 358
Fu el (petrol) ......................................... 357
No tes .................................................. 355
Wi ndsc reen washer fluid .................... .363
Operating saf ety
48 V on-boa rdelectrical sy stem ............ 22
Declaration of confo rmity (elect ro‐
magnetic compatibility) ......................... 24
Declaration of conformity (ja ck) ............ 27
Declaration of conformity (TIREFIT kit) .. 28
Declaration of conformity (wireless
ve hicle components) ............................. 24
EQ Boo st............................................... 22 460
Index

Ru
n-flat characteristics
MOExtended tyres ............................... 316
Ru nning-in no tes .....................................1 58S
Saf ety sy stems
see Driving saf ety sy stem
Saf etyve st ............................................... 314
Sear chlight
Swit ching on/off with hand mo ve‐
ments .................................................. 262
Seat ............................................... 96, 97,11 3
4-w aylumbar support .......................... 100
Ad justing (electrically) ........................ .100
Ad justing (me chanically and electri‐
cally) ...................................................... 97
Ad justing (Seat Comfort) ....................... 99
Au tomatic seat adju stment ................. 103
Backrest (rear) locking ......................... 11 5
Con figuring the settings ......................1 02
Cor rect driver's seat position ................ 96
Fo lding the backrest (rear) back ..........1 15
Fo lding the backrest (rear) forw ards .... 11 3
Massage programme overview ............ 104Operating
the memory function ........... 11 0
Pa nel heating ....................................... 106
Re setting the settings .......................... 104
Setting options ...................................... 14
Wo rkout programme overview ............ .104
Seat belt ............................................... 37, 40
Ac tivating/deactivating seat belt
adjustment ............................................ 40
Ad justing the height .............................. 39
Care ..................................................... 312
Fa stening ............................................... 39
Pr otection ..............................................37
Re ar seat belt status display .................. 41
Re duced pr otection ...............................38
Re leasing .............................................. .40
Seat belt adjustment (function) ............. 40
Wa rning lamp ........................................ 40
Seat belt adju stment
Ac tivating/deactivating ......................... 40
Fu nction ................................................ 40
Seat belt tensioners
Ac tivation .............................................. 36
Seat belt warning
see Seat belt Seat co
ver (Care) .................................... .312
Seat heater Activating/deactivating ...................... .105
Seat ventilation
Switching on/o ff................................. 106
Selecting a gear
see Changing gears
Selector le ver
see DIRECT SELECT le ver
Self-test Automatic front passenger front air‐
bag shutoff ............................................ 46
Sensors (care) .......................................... 310
Service see ASS YST PLUS
Service centre see Qualified specialist workshop
Service inter val display
see AS SYST PLUS
Setting a speed see Cruise control 464
Index