2020 MERCEDES-BENZ E-CLASS SALOON check engine

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
J Brake sy stem warning lamp
(yellow) The
yellow brake sy stem warning lamp is lit while the engine is running.
* &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, obse rve it. #
Consult a qualified specialist workshop.
J Brake sy stem warning lamp
(red) The
red brake sy stem warning lamp is lit while the engine is running.
*Possible causes: R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
R The reis insuf ficient brake fluid in the brake fluid reser voir. #
Notethe messages on the multifunction displa y. &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in emergency braking situations. 432
Display messa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. ÷
ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
*O ne or more wheels has reached its grip limit (/ page188). #
Adapt your driving style to suit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights
up The
yellow ESP ®
wa rning lamp is lit while the engine is running.
* ESP ®
is malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. Display messages and
warning/indicator lamps 435

Ac
tivating/deactivating the synchro‐
nisation function (cont rol panel) .......... 14 5
Ac tivating/deactivating the synchro‐
nisation function (MBUX multimedia
sy stem) ................................................ 14 6
Air-reci rculation mode ........................ .146
Au tomatic control ................................ 14 5
Calling up the air conditioning menu ... 14 4
Climate style function .......................... 14 5
Demi sting the windscreen ...................1 43
Demisting wind ows............................. 14 6
Fr ont air vents ..................................... 15 2
Glo vebox air vent ................................ 15 3
Inserting/removing theflacon (fra‐
gr ance sy stem) .................................... 147
Ionisation ............................................. 14 6
No te .................................................... 14 3
Re ar air vents ...................................... 15 3
Re sidual heat ....................................... 14 6
Setting (MBUX multimedia sy stem) ..... 14 4
Setting the air distribution ...................1 43
Setting the air flow ............................... 14 3
Setting the climate style ......................1 45
Setting the fragrance sy stem ............... 14 6
Setting thete mp erature ......................1 43
St ationary heater/ ventilation .............. 14 8Switching on/off .................................
14 4
Switching there ar wind owheater
on/off .................................................1 43
THERMATIC control panel .................... 14 3
THERMOTRONIC contro l panel ............14 3
Ve ntilating theve hicle (con venience
opening) ................................................ 86
Wi ndsc reen heating ............................. 14 8
Climate style
Fu nction .............................................. 14 5
Setting ................................................. 14 5
Cockpit ........................................................ .6
Overview .................................................6
Cof fee cup symbol
see ATTENTION ASSIST
Collision de tection (pa rked vehicle) ......184
Combination switch ................................12 8
Compu ter
see On-board computer
Consum ption indicator
Calling up ............................................ 16 8
Con venience closing ................................. 86
Con venience opening ................................ 86 Coolant (engine)
Check le vel .......................................... 305
No tes .................................................. 363
Cooling see Climate control
Co pyright ...................................................34
Cornering light ........................................ .129
Cross Traf fic Alert .................................. .229
Crosswind Assist Function/no tes ................................... 19 0
Cruise control .......................................... 19 6
Ac tivating ............................................ .197
Buttons ................................................ 197
Calling up a speed .............................. .197
Deactivating ......................................... 197
Fu nction .............................................. 19 6
Re quirements ...................................... 197
Selecting .............................................. 197
Setting a speed .................................... 197
St oring a speed .................................... 197
Sy stem limitations ...............................1 96 Index
445

¯
AdBlue sy stem fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km .............................................. .420
¯ AdBlue sy stem fault Emer‐
ge ncy op. in XXX miles See Owner's
Manual ................................................ 420
¯ AdBlue sy stem fault Engine
st art not possible ................................ .421
¯ AdBlue sy stem fault See Own‐
er's Manual ........................................ .420
5 Add 1 litre engine oil when
next refuelling .................................... .422
é ATTENTION ASSIST inoperative .. 401
é ATTENTION ASSIS T:Take a
break! .................................................. 401
: Automatic driving lights inoper‐
ative ..................................................... 375
Á Changekey bat teries .................. 373
J Check brake fluid le vel.............. .393 #
Checkbrake pads See Owner's
Manual ................................................ 393
5 Check eng. oil le v.when next
re fuelling ............................................. 421
ï Checktrailer hitch lo ck.............. 380
h Check tyre(s) .............................. 41 5
! Clean the fuel filter .................... .386
ÿ Coolant Stop vehicle Switch
engine off ............................................ 385
_ Currently una vailable Camera
view restricted ..................................... 405
ç Currently unavailable Radar
sensors dirty .......................................4 04
! currently una vailable See Own‐
er's Manual ........................................ .406
÷ currently una vailable See Own‐
er's Manual ........................................ .407
5 Engine oil le vel cannot be
measured ............................................ 424 5
Engine oil le velRe duce oil le vel
............................................................. 422
5 Engine oil le velSt op vehicle
Switch engine off ................................ 422
5 Engine oil pressure Stop
Switch off engine ................................ 423
ä Fault Drive at max. 80 km/h ...... 398
6 Front left malfunction Consult
wo rkshop (e xample)............................ 370
& inoperative Battery low ...............378
& inoperative Refuel vehicle ........... 378
& inoperative See Owner's Man. ....378
! inoperative See Owner's Man‐
ual ....................................................... 407
÷ inoperative See Owner's Man‐
ual ....................................................... 408
T inoperative See Owner's Man‐
ual ....................................................... 409
G Inoperati ve.................................. 41 0 Index
447

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

Engine number .................................... 353
St arting (Digital Vehicle Keyst icke r) .... 15 6
St arting (eme rgency operation
mode) .................................................. 15 6
St arting (Remo teOnline) ..................... 157
St arting (s tart/s top button) ................ 15 5
St arting assis tance .............................. 326
Switching off (s tart/s top button) ........ 17 9
Engine bonnet Function (active bonnet) ...................... 300
Opening/closing .................................. 301
Engine data Displaying ............................................ 16 8
Engine electronics Notes ................................................... 351
Engine number ........................................3 53
Engine oil ................................................. 304
Ad ditives .............................................. 361
Capacity .............................................. 361
Checking the oil le vel using the oil
dipstick ............................................... 303
Checking the oil le vel using the on-
board computer ................................... 303
MB-Fr eigabe or MB-Appr oval .............. .361 Quality ................................................. 361
To
pping up ...........................................3 04
EQ Boost Operating saf ety .................................... 22
Quali fied specialist workshop ................29
ERA-GLONASS test mode
St arting/ending .................................. 290
ESC (Elect ronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assist ................................. 19 0
Tr ailer stabilisation .............................. 19 0
ESP ®
(Electronic Stability Prog ram) ...... 188
Ac tivating/deactivating ...................... .190
Fu nction/no tes ................................... 188
EU general operating permit number ....353
Exterior lighting see Lights
Exterior lighting (care) ............................310 F
Fa tigue de tection
see ATTENTION ASSIST
Fa ult message
see Displ aymessa ge
Fire extinguisher ...................................... 315
Fi rs t-aid kit (soft sided) ...........................315
Flacon Inserting/removing ............................ .147
Flat towing
see Tow- bar sy stem
Flat tyre ....................................................3 16
MOExtended tyres ...............................3 16
No tes ................................................... 316
TIREFIT kit ............................................ 318
Wheel change ...................................... 345
Floor mats ................................................ 124
Fo g light (extended range) ......................1 30
Fo il co vering
Ra dar and ultrasonic sensors .............. 186
Fr ag rance
see Fragrance sy stem Index
453