ignition MERCEDES-BENZ E-CLASS CABRIOLET 2020 Manual PDF

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. 384
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 203). #
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 201).
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 203).388
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 (/ page316).
The 48 V bat tery isch arge 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. 404
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 172).
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 (/ page172).
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 (/ page172). #
Switch on the ignition and waitfor appro ximately 60 seconds. #
Start the engine. 41 0
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 (/ page416)
ü Seat belt (/
page 416)
ï Trailer hit ch (/page 417)
Ù Powe rst eering (/ page417)
ÿ Coolantte mp erature (/ page418)
; Engine diagnostics (/
page 418)
% Preglow
# Electrical
fault (/ page418)
8 Re
ser vefuel with fuel filler flap loca‐
tion indicator (/ page418)
! Electric pa
rking brake (red)
(/ page 421)
! Electric parking brake (yellow)
(/
page 421)
J Brakes (yellow) (/
page 421)
J Brakes (red) (/
page 421)
L Distance warning (/ page 423)
ä AIRBODY CONTROL (/ page 423)
ä DYNA MIC BODY CONTROL
(/ page 423) !
ABS (/
page 424)
÷ ESP®
(/ page 424)
å ESP®
OFF (/ page 424)
h Ty
re pressure monitoring sy stem
(/ page 427)
T St
anding lights (/ page122)
L Low beam (
/page 122)
K High beam (/
page124)
#! Tu
rn signal light (/ page124)
R Re
ar fog light (/ page122) Displ
aymessa ges and warning/indicator lamps 415

!
Turn on the ignition torelease
th e parking brake ................................ 384
d Vehicle is operational Switch
off ignition before exiting .................... .371
É Vehicle rising Please wait.......... .391
É Vehicle rising .............................. 391
h Warning tyre defect .................... 407
h Wheel sensor(s) missing ............ 405
K While stationar y,apply the
brake before operating the soft top .....3 65
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss. .............................................. 41 0
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual .........393
Ac tive Blind Spot Assi stinope rative .... 394
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ 394 Ac
tive bonnet malfunction See Own‐
er's Manual .......................................... 373
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 400
Ac tive Brake Assi stFunctions limited
See Owner's Manual ............................ 401
Ac tive Dis tance Assi stavailable
again .................................................. .387
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual .........386
Ac tive Dis tance Assi stinope rative ....... 387
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........394
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 394
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual .......................................... 391 Ac
tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops ......................................... 388
Ac tive Steering Assist cur rently
una vailable See Owner's Manual .........387
Ac tive Steering Assist inoperative .......388
Ac tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .........388
Ac tive Stop-and-Go Assist inopera‐
tive See Owner's Manual ..................... 389
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........369
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 369
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .369
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .369 Index
439

Head-up display
....................................... 24 6
Ad justing display elements (on-board
compu ter) ............................................ 24 6
Ad justing the brightness (on-board
computer) ............................................ 24 6
Fu nction .............................................. 24 5
Menu (on-board computer) .................. 24 6
Operating the memory function ........... 11 2
Setting the position (on-board com‐
puter) ................................................... 24 6
Switching on/off ................................. 247
Headlamp flashing .................................. 124
Headlamps see Automatic driving lights
Heating see Climate control
Help call see Mercedes-Benz emergency call sy stem
High beam Activating/deactivating ...................... .124
Ad aptive Highbeam Assist .................. .127
Ad aptive Highbeam Assist Plus .......... .128
High-pressure cleaner (care) ................. 296Hill
Start Assist ....................................... 204
HOLD function ......................................... 204
Fu nction/no tes ................................... 204
Switching on/off ................................. 205
Home screen (media display) Overview ............................................. 24 9
Hooking the luggage net .........................117 I
i-Size child seat securing sy stem
Fitting .................................................... 60
i‑Size child seat securing sy stem
Seats suitable for attaching ................... 59
Identification plate Engine ................................................. 343
Vehicle ................................................ 343
Ignition Switching on (S tart/S top button) ........ 15 0
Ignition key
see Key
Immobiliser ................................................ 92 Implied
warranty
Ve hicle ................................................... 31
In-Car Of fice ............................................ .273
Fe atures .............................................. 273
Indicator lamps see Warning/indicator lamps
Individual drive prog ram
Con figuring .......................................... 16 3
Selecting ............................................. 16 3
Inspection see AS SYST PLUS
Instrument clus ter
Fu nction/no tes ............................2 41,24 2
Instrument display Function/no tes ................................... 24 2
Instrument clus ter ................................. 10
Wa rning/indicator lamps .................... .415
Instrument display and on-board
compu ter
Fu nction/no tes .................................... 241
Intelligent Light Sy stem
Ac tive headla mps ................................ 12 5
Ad aptive Highbeam Assist .................. .127 Index
445

see
Telephone
Sma rtphone integ ration ......................... 275
Overview ............................................. 275
Snow chains ............................................ 325
Soc ket (12 V) ............................................ 11 8
Fr ont centre console ............................ 11 8
Soft top
Care .................................................... 298
Closing (soft- top switch) ........................ 82
Closing using theke y ............................ .91
Opening (soft-top switch) ......................82
Opening with theke y ............................ .91
Problem .................................................88
Re locking .............................................. .84
Soft-top switch .......................................... 82
Software update System updates ................................... 255
Sound PRE-SAFE ®
Sound ................................. 50
Wheels and tyres ................................. 325
Sound menu Functions overview .............................. 286 Spare wheel
see Emer gency spa rewheel
Speed limit for winter tyres
Setting ................................................. 194
St andby mode
Ac tivating/deactivating ...................... .180
Fu nction .............................................. 180
St anding lights ........................................ 12 2
St art-off assi st
see Optimised acceleration
St art/s top button
Pa rking theve hicle ...............................1 74
St arting theve hicle .............................. 151
Switching on the po wer supply or
ignition ................................................ 15 0
St art/s top function
see ECO start/ stop function
St arter battery
Charging (Remo teOnline) .................... 15 3
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 6
Problems (remo tecontrol) ................... 147
Re placing the battery (remo tecon‐
trol) ...................................................... 14 6
Setting (MBUX multimedia sy stem) ..... 14 5
Setting (remo tecontrol) ...................... 14 5
Switching on/off (control panel) ......... 14 4
ST EER CONT ROL
Fu nction/no tes ................................... 185
Ste ering wheel ........................................ .243
Ad justing (electrically) ........................ .109
Ad justing (manually) ............................ 108
Buttons ................................................ 24 3
Care .................................................... 302
Operating the memory function ........... 11 2
St eering wheel heater .......................... 109
Ste ering wheel gearshift paddles ..........16 6
Ste ering wheel heater
Swit ching on/off ................................ .109
St ow age areas
see Loading Index
455