2020 MERCEDES-BENZ E-CLASS COUPE engine coolant

Display messages
Possible causes/consequences and M
MSolutions
ÿ Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. &
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. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120°C.
ÿ *T
hefan mo tor is defective. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C. 380
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

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
If th e trailer hitch is swivelling: #
Wait until the ball neck has reached the operational position.
Ù
Po we rst eering warning
lamp (red) The
red po werst eering sy stem warning lamp is lit while the engine is running.
*The po wer assi stance or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. #
Consult a qualified specialist workshop. #
Notethe messages on the multifunction displa y.Engine
Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
ÿ Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
*Possible causes: R The temp erature sensor is malfunctioning 422
Display messages 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 300). Display messages and
warning/indicator lamps 423

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C.
; Engine diagnosis warning
lamp The
yellow engine diagno stics warning lamp is lit while the engine is running.
*A malfunction has occu rred in the engine, theex haust sy stem or the fuel sy stem.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
*Ve hicles with a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need
not be checked.
#
Elect rical fault warning
lamp The
red elect rical fault warning lamp is lit.
*T here is a fault in the electrics. #
Notethe messages on the multifunction displa y.424
Display messages and warning/indicator lamps

Ac
tivating/deactivating the synchro‐
nisation function (MBUX multimedia
sy stem) ................................................ 14 3
Air-reci rculation mode ........................ .144
Au tomatic control ................................ 14 3
Calling up the air conditioning menu ... 14 2
Climate style function .......................... 14 3
Demi sting the windscreen ...................1 41
Demi sting windo ws............................. 14 4
Fr ont air vents ..................................... 14 9
Inserting/removing theflacon (fra‐
gr ance sy stem) .................................... 14 4
Ionisation ............................................. 14 4
No te ..................................................... 141
Re ar air vents ...................................... 15 0
Re sidual heat ....................................... 14 4
Setting (MBUX multimedia sy stem) ..... 14 2
Setting the air distribution ...................1 41
Setting the air flow ............................... 141
Setting the climate style ......................1 43
Setting the fragrance sy stem ............... 14 4
Setting thete mp erature ....................... 141
St ationary heater/ ventilation .............. 14 5
Switching on/off ................................. 14 2
Switching there ar wind owheater
on/off .................................................. 141THERMATIC contro
l panel .................... 141
THERMOTRONIC contro l panel ............141
Ve ntilating theve hicle (con venience
opening) ................................................ 85
Climate style
Fu nction .............................................. 14 3
Setting ................................................. 14 3
Cockpit ........................................................ .6
Overview .................................................6
Cof fee cup symbol
see ATTENTION ASSIST
Collision de tection (pa rked vehicle) ......181
Combination switch ................................12 5
Compu ter
see On-board computer
Consum ption indicator
Calling up ............................................ 16 6
Con venience closing ................................. 85
Con venience opening ................................ 85
Coolant (engine) Check le vel .......................................... 300
No tes .................................................. 359 Cooling
see Climate control
Co pyright ...................................................34
Cornering light ........................................ .126
Cross Traf fic Alert .................................. .226
Crosswind Assist Function/no tes .................................... 187
Cruise control .......................................... 19 3
Ac tivating ............................................ .194
Buttons ................................................ 194
Calling up a speed .............................. .194
Deactivating ........................................ 194
Fu nction .............................................. 19 3
Re quirements ...................................... 194
Selecting .............................................. 194
Setting a speed .................................... 194
St oring a speed .................................... 194
Sy stem limitations ...............................1 93 D
Dashboard see Cockpit Index
439

¯
AdBlue sy stem fault Emer‐
ge ncy op. in XXX miles See Owner's
Manual ................................................. 41 5
¯ AdBlue sy stem fault Engine
st art not possible ................................ .416
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... 41 5
5 Add 1 litre engine oil when
next refuelling ...................................... 417
é ATTENTION ASSIST inoperative
.............................................................3 96
é ATTENTION ASSIS T:Take a
break! .................................................. 396
: Automatic driving lights inoper‐
ative ..................................................... 371
Á Changekey bat teries ................. 369
J Check brake fluid le vel.............. .388
# Checkbrake pads See Owner's
Manual ................................................ 388 5
Check eng. oil le v.when next
re fuelling .............................................. 416
ï Check trailer hit chlock .............. 375
h Check tyre(s) .............................. 41 0
! Clean the fuel filter .................... .381
ÿ Coolant Stop vehicle Switch
engine off ............................................ 380
_ Currently una vailable Camera
view restricted ..................................... 400
ç Currently unavailable Radar
sensors dirty .......................................3 99
! currently una vailable See Own‐
er's Manual .......................................... 401
÷ currently una vailable See Own‐
er's Manual ........................................ .402
5 Engine oil le vel cannot be
measured ............................................ .418
5 Engine oil le velRe duce oil le vel.. 417
5 Engine oil le velSt op vehicle
Switch engine off ................................. 4175
Engine oil pressu reStop
Switch off engine ................................. 41 8
ä Fault Drive at max. 80 km/h ...... 393
6 Front left malfunction Consult
wo rkshop (e xample)............................ 366
_ Front left seat backrest not
loc ked (e xamp le)................................ .378
& inoperative Battery low ...............374
& inoperative Refuel vehicle ........... 374
& inoperative See Owner's Man. ....374
! inoperative See Owner's Man‐
ual ....................................................... 402
÷ inoperative See Owner's Man‐
ual ....................................................... 403
T inoperative See Owner's Man‐
ual ....................................................... 404
G Inoperati ve................................. 405
: Intelligent Light Sy stem inoper‐
ative ....................................................3 72 Index
441

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