check engine light MERCEDES-BENZ E-CLASS SALOON 2020 Owners Manual

#
Toswitch on the po wer supp ly:press but‐
to n1 once.
Yo u can activate the windscreen wiper, for
ex ample.
The po wer supp lyis switched off again if thefo l‐
lowing conditions are me t:
R You open the driver's door.
R you press but ton1 twice more. #
Toswitch on the ignition: press button 1
twice.
The indicator lamps in the instrument clus ter
light up.
The ignition is switched off again if one of the
fo llowing conditions is me t:
R you do not start theve hicle within
15 minutes and the transmission is in posi‐
tion jorthe electric parking brake is
applied.
R you press but ton1 once. St
arting theve hicle St
arting theve hicle with thest art/s top but‐
ton &
DANG ER Risk of death caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vethe engine or, if present,
th e auxiliary heating running in an
enclosed space wi thout suf ficient venti‐
lation. &
WARNING Risk offire due toflammable
material in the engine compartment or
th eex haust sy stem
Flammable materials may ignite. #
Therefore, check regularly that there
are no flammable materials in the
engine compartment or on theex haust
sy stem. Re
quirements:
R theke y is in theve hicle and is recognised.
R or: a Digi talVe hicle Keyst icke r is located in
th e mar ked space (/ page156). #
Shift the transmission toposition jori. #
Depress the brake pedal and press button
1 once. Driving and parking
15 5

#
Ifth e bonn etcan still be lif ted slightl y,open
th e bonn etagain and close it with a little
more forc e until it engages cor rectly. Engine oil
Che
cking the engine oil le vel using the oil
dip stick &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. *
NO
TEPlug-in hybrid #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Re
quirements: R
The engine has an oil dipstic k.If not, the
engine oil le vel can be checked only with the
on-board computer (/ page 303) .
Depending on the engine, the oil dipstick may be
ins talled in the engine compartment in dif fere nt
locations.
The waiting time before checking the oil le vel
when the engine is at normal operating temp era‐
ture is five minutes. #
Park theve hicle on a le vel sur face. #
Pull oil dipstick 1out and wipe off. #
Slowly slide oil dipstick 1into the guide
tube tothestop, and pull it out again af ter
appr oximately thre e seconds.
R oil le vel is cor rect: oil le vel is between 2
and 3.
R oil le velto o low: oil le vel is at 3or
belo w.
R oil le velto o high: oil le vel is abo ve2 . #
Ifth e oil le vel is too lo w,top up with 1 litre of
engine oil. #
Ifth e oil le vel is too high, drain off excess
engine oil. Consult a qualified specialist
wo rkshop.
Checking the engine oil le vel using the on-
board compu ter
Re quirements:
R the engine has been warmed up.
R theve hicle is par ked on a le vel sur face.
R The engine is running at idle speed. Maintenance and care
303

&
WARNING Risk ofexplosion during
ch arging process and starting assis tance
During thech arging process and starting
assis tance, the battery may release an explo‐
sive gas mixture. #
Avoid fire , naked flames, creating
spar ksand smoking. #
Make sure there is suf ficient ventila‐
tion. #
Do not lean over a batter y. &
WARNING Risk ofexplosion from a fro‐
zen battery
A dischar ged battery may freeze at temp era‐
tures slightly abo veor below freezing point.
During starting assis tance or battery charg‐
ing, bat tery gas can be released. #
Alw ays allow a battery tothaw before
ch arging it or per form ing starting assis‐
ta nce. If
th e indicator/warning lamps in the instrument
clus ter do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has fro‐
zen. In this case you may neither jump-s tart the
ve hicle nor charge the batter y.
The service life of a battery that has been
th awe d may be dramatically shor tened. The
st arting characteristics may be impaired, espe‐
cially at low temp eratures.
It is recommended that you ha veathaw ed bat‐
te ry checked at a qualified specialist workshop.
Plug-in hybrid: be sure toobser vethe no tes in
th e Supplement. You could otherwise failto rec‐
ognise dangers.
All vehicles
* NO
TEDama gecaused bynumerous or
ex tended attem ptsto start the engine Nume
rous or extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting
assis tance and when charging the battery:
R Only use undamaged jump lead/charging
cables with a suf ficient cross-section and
insula tedte rm inal clamps.
R Non- insulated parts of thete rm inal clamps
must not come into con tact wi thother me tal
parts while the jump lead/charging cable is
connected tothe battery/jump-s tart connec‐
tion point.
R The jump lead/charging cable must not
come into contact wi thany parts which may
mo vewhen the engine is running.
R Alw ays make sure that nei ther you nor the
battery is elect rostatically charge d.
R Keep away from fire and naked flames.
R Do not lean overth e batter y.
Obser vethe additional following points when
ch arging the battery:
R Only use battery charge rs tested and
appr oved for Mercedes-Benz.
R Read the battery charge r's operating instruc‐
tions before charging the batter y. Breakdown assis
tance 325

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

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