2020 MERCEDES-BENZ E-CLASS ESTATE coolant

Display messages
Possible causes/consequences and M
MSolutions
¥ Top up washer fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped below the minimum. #
Top up thewa sher fluid (/ page315). Engine
Dis
play messages
Possible causes/consequences and M
MSolutions
To switch off the engine,
press the Start/Stop but-
ton for at least 3 seconds
or 3 times. *Y
ou ha vepressed thest art/ stop button while theve hicle is in motion. #
Information about switching off the engine while driving (/ page163).
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* NO
TEEngine dama gedue toinsuf ficient coolant #
Avoid long journe yswith insuf ficient coolant. #
Add coolant (/ page314). #
Have the engine cooling sy stem checked at a qualified specialist workshop. 394
Display messages and warning/indicator lamps

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. Displ
aymessa ges and warning/indicator lamps 395

Display messages
Possible causes/consequences and M
MSolutions
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. 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 438)
ü Seat belt (/
page 438)
ï Trailer hit ch (/page 439)
Ù Powe rst eering (/ page 439)
ÿ Coolanttemp erature (/ page440)
; Engine diagnostics (/
page 440)
% Preglow
# Electrical
fault (/ page440)
8 Re
ser vefuel with fuel filler flap loca‐
tion indicator (/ page440)
! Electric pa
rking brake (red)
(/ page 443) 436
Displaymessa ges and warning/indicator lamps

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 440
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 314). Displ
aymessa ges and warning/indicator lamps 441

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.442
Displaymessa ges and warning/indicator lamps

Re
sidual heat ....................................... 154
Setting (MBUX multimedia sy stem) ..... 15 2
Setting the air distribution ...................1 51
Setting the air flow ............................... 151
Setting the climate style ......................1 53
Setting the fragrance sy stem ............... 154
Setting thete mp erature ....................... 151
St ationary heater/ ventilation .............. 15 6
Switching on/off ................................. 15 2
Switching there ar wind owheater
on/off .................................................. 151
THERMATIC contro l panel .................... 151
THERMOTRONIC contro l panel ............151
Ve ntilating theve hicle (con venience
opening) ................................................ 86
Wi ndsc reen heating ............................. 15 6
Climate style
Fu nction .............................................. 15 3
Setting ................................................. 15 3
Cockpit ........................................................ .6
Overview .................................................6
Cof fee cup symbol
see ATTENTION ASSIST
Collision de tection (pa rked vehicle) ......19 2 Combination switch
................................13 5
Combined luggage co ver and net
At tach ing tothere ar seat backrest .... .123
Ins talling/ removing ............................. 12 2
Compu ter
see On-board computer
Consum ption indicator
Calling up ............................................ .176
Con venience closing ................................. 87
Con venience opening ................................ 86
Coolant (engine) Check le vel .......................................... 314
No tes ................................................... 373
Cooling see Climate control
Copyright .................................................. .34
Cornering light ........................................ .136
Cross Traf fic Alert .................................. .238
Crosswind Assist Function/no tes ................................... 19 8
Cruise control .......................................... 204
Ac tivating ............................................ 205 Buttons ................................................ 205
Calling up a speed ............................... 205
Deactivating ........................................ 205
Fu nction .............................................. 204
Re quirements ...................................... 205
Selecting ............................................ .205
Setting a speed ................................... 205
St oring a speed ................................... 205
Sy stem limitations ...............................2 04 D
Dashboard 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 Index
457

é
ATTENTION ASSIS T:Take a
break! .................................................. 412
: Automatic driving lights inoper‐
ative .................................................... 385
Á Change key bat teries ................. 383
J Check brake fluid le vel.............. .403
# Checkbrake pads See Owner's
Manual ................................................ 403
5 Check eng. oil le v.when next
re fuelling ............................................. 433
ï Checktrailer hitch lo ck.............. 390
h Check tyre(s) .............................. 427
! Clean the fuel filter .................... .396
É Compressor is cooling ................41 0
ÿ Coolant Stop vehicle Switch
engine off ............................................ 395
_ Currently una vailable Camera
view restricted ..................................... 416
ç Currently una vailable Radar
sensors dirty ........................................ 41 5!
currently una vailable See Own‐
er's Manual .......................................... 41 8
÷ currently una vailable See Own‐
er's Manual .......................................... 419
5 Engine oil le vel cannot be
measured ............................................ 436
5 Engine oil le velRe duce oil le vel
............................................................. 434
5 Engine oil le velSt op vehicle
Switch engine off ................................ 434
5 Engine oil pressure Stop
Switch off engine ................................ 435
ä Fault Drive at max. 80 km/h ...... 408
6 Front left malfunction Consult
wo rkshop (e xample)............................ 380
& inoperative Battery low .............. 388
& inoperative Refuel vehicle ..........3 88
& inoperative See Owner's Man. ... 388
! inoperative See Owner's Man‐
ual ....................................................... .419 ÷
inoperative See Owner's Man‐
ual ....................................................... 420
T inoperative See Owner's Man‐
ual ....................................................... 421
G Inoperati ve................................. 422
î inoperati ve.................................. 416
: Intellige nt Light Sy stem inoper‐
ative ....................................................3 86
Á Key not de tected (red displ ay
messa ge).............................................3 84
Á Key not de tected (white displ ay
messa ge).............................................3 84
: Left dipped beam (e xamp le) ...... .385
6 Left wind owbag malfunction
Consult workshop (e xample).............. .380
¢ Lowe ring .................................... 409
: Malfunction See Owner's Man‐
ual ....................................................... 385
É Max. speed 35 km/h (red dis‐
pl ay messa ge)...................................... 411 Index
459