ignition MERCEDES-BENZ E-CLASS COUPE 2020 Repair Manual

Display messages
Possible causes/consequences and M
MSolutions
If it is not possible toapply the electric parking brake or there d! indicator lamp continues toflash: #
Do not continue driving. Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
* The yellow ! indicator lamp is lit and there d! indicator lamp flashes for appro ximately ten seconds af ter
th e electric parking brake has been applied or released. It then remains lit or goes out. The electric parking brake is
malfunctioning.
If th ech arge leve l is too lo w: #
Char gethe12 V batter y.
To appl y: #
Switch the ignition off.
The electric parking brake will be applied automaticall y.
If yo u do not wantthe electric parking brake tobe applied, e.g. at an automatic car wash or when theve hicle is
being towe d, lea vethe ignition switched on. This does not include having theve hicle towe d with there ar axle
ra ised.
If th e electric parking brake is not applied automatically: #
Switch the ignition off and switch it back on. #
Release and then apply the electric parking brake manually (/ page181).
If it is still not possible toapply the electric parking brake: 386
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
! Turn on the ignition to
release the parking brake *
The red! indicator lamp is lit.
Yo u ha veattem ptedto release the electric parking brake with the ignition switched off. #
Switch on the ignition.
J Check brake fluid level *T
here is insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. #
Check brake pads See
Owner's Manual *T
he brakepads ha vereached thewe ar limit. #
Consult a qualified specialist workshop. 388
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Active Steering Assist inop-
erative *A
ctive Steering Assist is malfunctioning. Active Dis tance Assi stDISTRONIC remains available. #
Consult a qualified specialist workshop.
Active Steering Assist cur-
rently unavailable due to
multiple emergency stops *A
ctive Steering Assist is temp orarily una vailable due tomultiple emergency stops. #
Take ove rth esteering and stop in accordance with the tra ffic conditions. #
Swit chthe ignition off and switch it back on.
Ac tive Steering Assist is available once more.
Beginning emergency stop *Y
our hands are not on thesteering wheel. An emer gency stop is being initiated (/ page 205). #
Put your hands back on thesteering wheel.
Yo u can cancel the deceleration at any time byper form ing one of thefo llowing actions:
R Steering
R Braking or accelerating
R Deactivating Active Dis tance Assi stDISTRONIC
Ø *A
ctive Steering Assist has reached the sy stem limits(/ page 203).
Yo u ha venot steered independently for a considerable period of time. #
Take ove rth esteering and drive on in accordance with the traf fic conditions.
Active Stop-and-Go Assist
currently unavailable see
Owner's Manual *A
ctive Stop-and-Go Assist is temp orarily una vailable. Active Dis tance Assi stDISTRONIC and Active Steering Assist
are still available.
The ambient conditions are outside the sy stem limits (/ page 206).392
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Ý Please wait 48 V battery
charging *T
he 48 V battery is dischar ged. You ha veswitched on the ignition while the12 V battery was being charge d with a
suitable charge r or while ano ther vehicle was pr oviding starting assis tance.
The discha rged 48 V battery is charge d automatically via thevo ltage con verter. Af ter a few minutes, theMotor can
be started again display message will be shown on the multifunction displa y. #
Start the engine. #
Drive theve hicle for a while tocharge the12 V battery and the 48 V battery af ter disconnecting thech arger
from theve hicle.
If th eMotor can be started again display message does not appear af ter a few minutes: #
Tryto start the engine again. #
Ifth e engine does not start, consult a qualified specialist workshop.
Cannot start engine See
Owner's Manual *T
hecharge leve l of the 48 V battery is too lo w.You can no lon gerst art the engine. #
Switch off electrical consumers that are not required. #
Connect a suitable charge r appro vedfo r Mercedes-Benz with suf ficient charge output tothe jump-s tart connec‐
tion point of the12 V battery (/ page 321).
The 48 V battery is charge d via thevo ltage con verter in theve hicle.
Motor can be started again *T
he 48 V battery has been charge d automatically via thevo ltage con verter. #
Start the engine and drive theve hicle for a while tocharge the12 V battery and the 48 V batter y. 408
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Ø Top up AdBlue Emergency
op. in XXX miles See Own-
er's Manual *
The low AdBlue ®
leve l will lead tolimited per form ance af terth ere maining dis tance displ ayed has been co vered. #
Top up AdBlue ®
immediately (/ page 174).
Ø XX,X l Top up AdBlue Emer.
op.: max. XXX km/h Start
not poss. in XXX km *
The low AdBlue ®
leve l will lead tolimited per form ance from the speed displa yed.
Af terth ere maining dis tance displ ayed has been co vered, it will no longer be possible tostart the engine. #
Add at least the amount of AdBlue ®
displ ayed (/ page174).
Ø XX,X l Top up AdBlue
Switch on ignition, wait 60
sec. or eng. start not poss. *
The AdBlue ®
tank is em pty. Yo u can no lon gerst art the engine. #
Add at least the amount of AdBlue ®
displ ayed (/ page174). #
Switch on the ignition and waitfor appro ximately 60 seconds. #
Start the engine. 414
Displaymessa ges and warning/indicator lamps

Wa
rning and indicator lamps Overview of indicator and
warning lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and
wa rning lamps may briefly light up or flash. This
behaviour is non-critical. These indicator and
wa rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y.
Instrument display Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown. Indicator and
warning lamps:
6 Re
stra int sy stem (/ page 420)
ü Seat belt (/
page 420)
ï Trailer hit ch (/page 421)
Ù Powe rst eering (/ page 421)
ÿ Coolanttemp erature (/ page 422)
; Engine diagnostics (/
page 422)
% Preglow
# Elect
rical fault (/ page 422)
8 Re
ser vefuel with fuel filler flap loca‐
tion indicator (/ page 422)
! Elect
ric pa rking brake (red)
(/ page 425)
! Electric parking brake (yellow)
(/
page 425)
J Brakes (yellow) (/
page 425)
J Brakes (red) (/
page 425)
L Distance warning (/ page 427)
ä AIRBODY CONTROL (/ page 427)
ä DYNA MIC BODY CONTROL
(/ page 427) !
ABS (/
page 428)
÷ ESP®
(/ page 428)
å ESP®
OFF (/ page 428)
h Ty
re pressure monitoring sy stem
(/ page 431)
T St
anding lights (/ page123)
L Low beam (
/page 123)
K High beam (/
page125)
#! Tu
rn signal light (/ page125)
R Re
ar fog light (/ page123) Displ
aymessa ges and warning/indicator lamps 419

Á
Key not de tected (red displ ay
messa ge).............................................3 70
Á Key not de tected (white displ ay
messa ge).............................................3 70
: Left dipped beam (e xamp le) ...... .371
6 Left windowbag malfunction
Consult workshop (e xample).............. .366
¢ Lowe ring .................................... 394
: Malfunction See Owner's Man‐
ual ....................................................... 371
ð Maximum speed exceeded ......... 391
Ø ................................................... 414
ç Off..............................................3 90
ë Off.............................................. 393
! Parking brake See Owner's
Manual ................................................ 384
É Please reduce speed .................. 395
Ý Please wait 48 V battery charg‐
ing ...................................................... .408
h Rectify tyre pressure ...................41 0Ø
Refill Ad Blue See Owne r’s
Manual .................................................4 13
! Release parking brake ................ 387
¸ Replace air cleaner .....................381
À Replace key See Owner's Man‐
ual ...................................................... .369
Á Replace key ................................ 369
8 Reser vefuel le vel...................... .381
6 Restra int sys. malfunction Con‐
sult workshop ...................................... 366
# See Owner's Manual .................. 406
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ....376
Ù Steering malfunction Stop
immediately See Owner's Manual .......377
# Stop vehicle Lea veengine run‐
ning ..................................................... 407
# Stop vehicle See Owner's Man‐
ual .......................................................4 07
É Stop vehicle Vehicle too low .......3 94 ç
suspended ................................. 390
: Switch off lights .........................3 72
: Switch on headlamps .................372
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual .......414
+ Top up coolant See Owner ’s
Manual ................................................ 379
¥ Top up washer fluid .................... 379
! Turn on the ignition torelease
th e parking brake ................................ 388
d Vehicle is operational Switch
off ignition before exiting .................... .375
É Vehicle rising Please wait.......... .395
É Vehicle rising .............................. 395
h Warning tyre defect .....................411
h Wheel sensor(s) missing ............ 409
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss. .............................................. 414442
Index

Home screen (media display)
Overview ............................................. 253
Hooking the luggage net .........................117 I
i-Size child seat securing sy stem
Fitting .................................................... 59
i‑Size child seat securing sy stem
Seats suitable for attaching ................... 59
Identification plate Engine ................................................. 349
Vehicle ................................................ 349
Ignition Switching on (S tart/S top button) ........ 15 2
Ignition key
see Key
Immobiliser ................................................ 91
Implied warranty
Ve hicle ................................................... 31
In-Car Of fice ............................................ .280
Fe atures .............................................. 280 Indicator lamps
see Warning/indicator lamps
Individual drive prog ram
Con figuring .......................................... 16 5
Selecting ............................................. 16 5
Inspection see AS SYST PLUS
Instrument clus ter
Fu nction/no tes ........................... 244,24 5
Instrument display Function/no tes ................................... 24 5
Instrument clus ter ................................. 10
Wa rning/indicator lamps .................... .419
Instrument display and on-board
compu ter
Fu nction/no tes ................................... 24 4
Intelligent Light Sy stem
Ac tive headla mps ................................ 12 6
Ad aptive Highbeam Assist .................. .128
Ad aptive Highbeam Assist Plus .......... .129
Ad versewe ather light .......................... 12 8
City lighting ........................................ .128
Cornering light ..................................... 12 6
Fo g light (extended range) ................... 127Mo
torw ay mode ................................... 127
Overview ............................................. 12 6
Switching on/off ................................. 12 8
Interior lighting ........................................ 13 2
Ambient lighting .................................. 13 2
Re ading light ........................................ 13 2
Setting ................................................. 13 2
Switch-off del aytime ........................... 13 3
Interior pr otection
Fu nction ................................................ 93
Priming/deactivating ............................. 93
In tern etradio
see TuneIn
Ionisation Activating/deactivating (MBUX mul‐
timedia sy stem) ................................... 14 4
iPhone ®
see Smartphone integ ration
ISOFIX child seat securing sy stem
Fitting .................................................... 59
Seats suitable for attaching ................... 58 Index
449

Ra
in-closing feature .............................. .84
Sliding sunroof .......................................... 86
Au tomatic features ................................ 89
Closing .................................................. 86
Closing using theke y ............................ 85
Opening ................................................ .86
Opening with theke y ............................ .85
Problem .................................................90
Ra in-closing feature .............................. .89
Smartphone see Smartphone integration
see Telephone
Sma rtphone integ ration ......................... 282
Overview ............................................ .282
Snow chains ............................................. 331
Soc ket (12 V) ............................................ 11 8
Fr ont centre console ............................ 11 8
Software update System updates ................................... 262
Sound PRE-SAFE ®
Sound ................................. 49
Wheels and tyres ................................. 331 Sound menu
Functions overview .............................. 293
Spare wheel see Emer gency spa rewheel
Speed limit for winter tyres
Setting ................................................. 19 6
St andby mode
Ac tivating/deactivating ...................... .183
Fu nction .............................................. 182
St anding lights ........................................ 12 3
St art-off assi st
see Optimised acceleration
St art/s top button
Pa rking theve hicle ...............................1 76
St arting theve hicle ............................. 15 3
Switching on the po wer supply or
ignition ................................................ 15 2
St art/s top function
see ECO start/ stop function
St arter battery
Charging (Remo teOnline) .................... 15 5
St arting assi stance
see Jump -sta rt connection St
arting the engine
see Vehicle
St arting-o ffaid
see Hill Start Assist
St ationary heater/ventilation
Displ ays (remo tecontrol) .................... 14 8
Problems (remo tecontrol) ................... 14 9
Re placing the battery (remo tecon‐
trol) ...................................................... 14 8
Setting (MBUX multimedia sy stem) ..... 147
Setting (remo tecontrol) ....................... 147
Switching on/off (control panel) ......... 14 6
ST EER CONT ROL
Fu nction/no tes ................................... 188
Ste ering wheel ........................................ .246
Ad justing (electrically) ........................ .107
Ad justing (manually) ............................ 106
Buttons ................................................ 24 6
Care .................................................... 307
Operating the memory function ........... 11 0
St eering wheel heater .......................... 107
Ste ering wheel gearshift paddles ..........16 8
Ste ering wheel heater
Swit ching on/off ................................ .107 Index
459