check engine light MERCEDES-BENZ CLA COUPE 2019 Owners Manual

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Standby mode is automatically deactivated
when the ignition is switched on.
Ac tivating/deactivating standby mode (park‐
ing up theve hicle)
Re quirements:
R The engine is switched off.
Multimedia sy stem:
4 © 5
Settings 5
Fahrzeug (Vehicle) #
Activate or deacti vate Standby mode.
When you activate the function, a prom pt
appears. #
Select Yes.
St andby mode is activated. Driving and driving saf
ety sy stems Driving sy
stems and your responsibility Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and manoeu‐
vring theve hicle. The driving sy stems are aids
and do not relie ve you of your responsibility per‐
ta ining toroad traf fic la w.Pay attention tothe traf
fic conditions at all times and inter vene
when necessa ry. Be aware of the limitations
re ga rding the safe use of these sy stems. Information about
radar senso rs Some driving and driving sa
fety sy stems use
ra dar sensors tomonitor the area in front of,
behind or next totheve hicle (depending on the
ve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. Keep these
parts free of dirt, ice and slush (/ page 458).
The sensors must not be co vered, forex ample
by cycle rack s, overhanging loads, sticke rs,fo il
or foils toprotect against stone chipping. In the
eve nt of dama getothe bumpers or radiator
grille, or following a collision impacting the
bumpers or radiator grille, ha vethe function of
th era dar sensors checked at a qualified special‐
ist workshop. The driving sy stems and driving
saf ety sy stems may no longer function proper ly
in such cases. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (/ page 230)
R ABS (Anti-lock Braking System)
(/ page 192)
R Active Dis tance Assi stDISTRONIC
(/ page 207)
R Adaptive Brake Lights (/ page 203)
R Active Brake Assi st (/ page 197)
R Active Lane Keeping Assist (/ page249)
R ATTENTION ASSIST (/ page240)
R BAS (Brak eAssist System) (/ page192)
R Hill Start Assist (/ page219)
R Suspension wi thadaptive damping adjust‐
ment (/ page 221)
R EBD (Electronic Brakeforc eDistribution)
(/ page 196) Driving and parking
191

#
Push yellow handle 1onthe bonn etcatch
to the left as far as it will go (palm down‐
wa rds). Lift the bonn etuntil it is automati‐
cally raised bythe pneumatic stru t. #
Toclose: lowe rth e bonn etand let it fall from
a height of appr oximately 20 cm. #
Ifth e bonn etcan still be lif ted slightl y,open
th e bonn etagain and close it with a little
fo rc e until it engages cor rectl y. Engine oil
Checking
the engine oil le vel using the on-
board compu ter
Re quirements:
The engine oil le vel is de term ined during driving.
De term ining the engine oil le vel can take up to
30 minutes with a normal driving style and even
longer with an active driving style.
In order torecei veare sult as quickly as possi‐
ble:
R warm upthe engine
R park theve hicle on a le vel sur face
R leave the engine running at idling speed
On-board compu ter:
4 Service 5
Engine oil level
Yo u will see one of thefo llowing messages on
th e multifunction display:
R Engine oil level Measuring now : measure‐
ment of the oil le vel is not yet possible. #
Repeat there qu est af ter a maximum of
30 minutes driving. R
Engine oil level OK andthe bar display for
indicating the oil le vel on the multifunction
display is green and is between "min" and
"max": the oil le vel is cor rect.
R Engine oil level Add 1,0 l andthe bar display
fo r indicating the oil le vel on the multifunc‐
tion display is orange and is below "min": #
Top up with 1 l engine oil.
R Reduce engine oil level andthe bar display
fo r indicating the oil le vel on the multifunc‐
tion display is orange and is abo ve"max": #
Drain off excess engine oil that has been
added. Consult a qualified specialist work‐
shop.
R For engine oil level turn on ignition: #
switch on the ignition tocheck the engine oil
le ve l.
R Engine oil level System inoperative : sensor
fa ulty or not inser ted. #
Consult a qualified specialist workshop.
R Engine oil level System currently unavail. : Maintenance and care
449

*
NO
TEDamaging the battery thro ugh
ove rvoltage When using a battery
charge r without a maxi‐
mum charging voltage, the battery or the
ve hicle electronics may be damaged. #
Only use battery charge rs with a maxi‐
mum charging voltage of 14.8 V. &
WARNING Risk ofexplosion from hydro‐
ge nga s igniting
A battery generates hydrogen gas during the
ch arging process. If there is a short circuit or
spar ksstart toform ,th ere is a danger of the
hy drogen gas igniting. #
Make sure that the positive term inal of
th e connected battery does not come
into conta ct withvehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,yo u must obse rveth e descri‐
bed order forth e battery clamps. #
When giving starting assis tance, al ways
make sure that you on lyconnect bat‐
te ry term inals with identical polarity. #
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jump
lead. #
Do not connect or disconnect the bat‐
te ry cla mp s while the engine is running. &
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 that there is suf ficient venti‐
lation du ring thech arging process and
during starting assis tance. #
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 may be released. #
Alw aysth aw a frozen bat tery out first
before charging it or per form ing start‐
ing assis tance. 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. Breakdown assis
tance 473

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
6 Re stra int sy stem warning
lamp The
redre stra int sy stem warning lamp is lit while the engine is running.
The restra int sy stem is faulty (/ page 35). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or may not
deploy as intended during an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop immediatel y.Seat belt
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
7 Seat belt warning lamp
lights up The
red seat belt warning lamp will light up once the engine has star ted.
In addition, a warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (/ page 39).588
Display messages and warning/indicator lamps

Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; 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.
There is a fault in the electrics. #
Obser vethe messages on the multifunction displa y.
æ
Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp lights up while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. 590
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 451). #
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. Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired. 592
Display messages and warning/indicator lamps

Options ................................................ 396
Saving as a favo urite .......................... .397
Selecting options for suggestions ........ 396
St oring ................................................ 395
Con venience closing ................................. 91
Con venience opening ................................ 90
Coolant (engine) Check le vel .......................................... 451
No tes ................................................... 521
Cooling see Climate control
Co pyright ...................................................33
Cornering light ........................................ .132
Cross Traf fic Alert .................................. .240
Crosswind Assist Function/no tes ................................... 19 6
Cruise control .......................................... 203
Ac tivating ............................................ 205
Buttons ................................................ 205
Calling up a speed ............................... 205
Deactivating ........................................ 205
Fu nction .............................................. 203
Re quirements ...................................... 205 Selecting ............................................
.205
Setting a speed ................................... 205
St oring a speed ................................... 205
Sy stem limitations ...............................2 03
Cup holder ......................................... 116, 11 8
Fitting/removing (centre console)
....................................................... 116, 11 8
Re ar .................................................... .120 D
Damage de tection (pa rked vehicle) .......189
Damping adjustment ............................... 221
Dash cam Starting/ending a video recording ...... 384
Dashboard see Co ckpit
Dashboard lighting see Instrument lighting
Dashcam Configuring the settings ......................3 85
Deleting a video recording ................... 385
Selecting a USB device ....................... 384 Data acquisition
Vehicle .................................................. 30
Data import/export ................................ 332
Fu nction/no tes ................................... 332
Importing/exporting ........................... 333
Data storage
Electronic control units ........................ .30
Online services ...................................... 32
Ve hicle .................................................. 30
Date Setting the time and date automati‐
cally ..................................................... 327
Deactivating the alarm (A TA).................... 98
Dealership see Qualified specialist workshop
Declaration of conformity Electromagnetic compatibility ............... 24
Jack ...................................................... .27
TIREFIT kit ............................................. 28
Wi reless vehicle components ................24
Decorative foil (cleaning instructions)
.................................................................. .456 604
Index

ÀAT
TENTION ASSIS T:Take a
break! .................................................. 541
b Automatic driving lights inoper‐
ative .................................................... 579
Au xilia rybattery malfunction ...............561
_ Before starting the engine, turn
th esteering wheel. .............................. 563
Beginning emer gency stop .................. 542
Blind Spot Assi stcur rently una vaila‐
ble See Owner's Manual ......................543
Blind Spot Assi stinope rative ............... 544
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...5 44
Brake immediately ............................... 535
ÁChange key bat teries ...................5 70
JChe ckbrake fluid le vel................ 535
Check brake pads See Owner's Man‐
ual ...................................................... .536
ïChe cktrailer hitch lo ck(white
display message) .................................5 72Check tyre pressures
then restart
Ru n Flat Indicator ................................ 565
hCheck tyre(s) ............................... 567
!Clean the fuel filter .................... .553
Clutch overheated Avoid pulling away
fo r XX:XX mins .................................... 564
?Coolant Stop vehicle Switch
engine off ............................................ 550
Cruise contro l and Limiter inope ra‐
tive ...................................................... 549
Cruise cont rol inope rative ................... 549
Cruise cont rol off ................................ 549
_ Currently una vailable Camera
view restricted ..................................... 547
ç Currently una vailable Radar
sensors dirty .......................................5 46
!cur rently una vailable See Own‐
er's Manual ........................................ .528
÷cur rently una vailable See Own‐
er's Manual ........................................ .529 Depress clutch ful
lyto start engine .....5 64
Drive sy stem Malfunction Stop
Switch engine off ................................ 554
Drive sy stem Malfunction Visit work‐
shop ....................................................5 54
5 Engine oil le vel cannot be
measured ............................................ 557
4Engine oil le velRe duce oil le vel...5 56
4Engine oil le velSt op vehicle
Switch engine off ................................ 555
4Engine oil pressure Stop Switch
off engine ............................................ 556
Fa ult Drive at max. 80 km/h ...............542
6Fr ont left malfunction Consult
wo rkshop (Example) ............................5 37
Fr ont-passenger airbag disabled See
Owner's Manual ..................................5 38
Fr ont-passenger airbag enabled See
Owner's Manual ..................................5 39 Index
607

b
Hazardwa rning lamps mal‐
functioning .......................................... 580
&inoperative Bat tery low .............. .577
& inope rative Refuel vehicle ............ 578
& inope rative See Owner's Man. .....577
! inope rative See Owner's Man‐
ual ....................................................... 529
÷inoperati veSee Owner's Man‐
ual ....................................................... 530
Tinoperati veSee Owner's Man‐
ual ....................................................... 531
GInoperati ve.................................. 541
b Intellige nt Light Sy stem inoper‐
ative ....................................................5 80
ÁKe y not de tected (red displ ay
messa ge).............................................5 71
Á Key not de tected (white displ ay
messa ge).............................................5 70
bLeft dipped beam (Example) ........578 6
Left windowbag malfunction
Consult workshop (Example) ............... 538
Limiter inoperative .............................. 549
Limiter passive .................................... 550
bMalfunction See Owner's Man‐
ual ....................................................... 579
ð Maximum speed exceeded ..........5 50
Mercedes me connect Services limi‐
te d See Owner's Manual .....................540
N permanently active Risk of vehicle
ro lling .................................................. 560
çOff .............................................. .548
ëOff ............................................... 547
Only select Park (P) when vehicle is
st ationary ............................................ 560
ïOpe ration only possible in
transmission position N .......................574
ï Operation only possible in
transmission position P .......................574!
Parking brake See Owner's
Manual ................................................ 532
Pa rking lock malfunct. Apply parking
brake .................................................. .562
ÁPlace theke y in the mar ked
space See Owner's Manual .................571
K Please check direction of tr avel ...... 545
PRE-SAFE inoperative See Owner's
Manual ................................................ 540
h Rectify tyre pressure ................... 568
Re duce speed ...................................... 569
ÚRe fill Ad Blue Engine start not
possible .............................................. .558
ÚRe fill Ad Blue See Owne r’s Man‐
ual .......................................................5 57
! Release parking brake .................532
¸Re place air cleaner ...................... 554
ÀRe placekey See Owner's Man‐
ual ...................................................... .569
ÁRe placekey ................................ .570 608
Index

æRe
servefuel le vel........................ 553
6Re stra int sys. malfunction Con‐
sult workshop ...................................... 536
Re versing not poss. Consult work‐
shop ..................................................... 561
Risk of vehicle rolling away Apply
pa rking brake See Owner's Manual .....5 62
Risk of vehicle rolling away Parking
brake not applied See Owner's Man‐
ual ...................................................... .535
Risk of vehicle rolling Driver door
open and transmission not in P ...........560
Ru n Flat Indicator inope rative ............. 566
#See Owner's Manual .................... 551
Speed limit (winter tyres) XXX km/h ... 550
Speed Limit Assi stinope rative ........... .546
ÙSt eering malfunction Incre ased
ph ysical ef fort See Owner's Manual ....574
Ù Steering malfunction See Own‐
er's Manual ......................................... 563 ÙSt
eering malfunction Stop
immediately See Owner's Manual ........575
# Stop vehicle Lea veengine run‐
ning ..................................................... 553
#St opvehicle See Owner's Man‐
ual .......................................................5 52
çsuspended .................................. 548
b Switch off lights .......................... 579
b Switch on headlamps ..................579
Te aching in transmission comple te..... 563
Te aching in transmission Operate
selec tor le ver Brake for XX seconds
Risk of vehicle rolling .......................... 562
To shift out of P or N,depress brake
and start engine .................................. 560
ÚTo p upAdBlue Perf.re duced in
XXX miles See Owner's Manual ...........557
Ú Top up AdBlue Perf.re duced:
XXX km/h Nostart in XXX km ............ 558
To p up coolant See Owner ’sManual ....551 ¥
Top up washer fluid .................... .577
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ......................545
Tr af fic Sign Assi stinope rative ............. 545
ï Trailer coupling extending… .........572
Tr ans. oil overheated Drive on with
care ..................................................... 562
Tr ansmission Malfunction .................... 561
Tr ansmission Malfunction Stop ............ 561
Tr ansmission Malfunction Visit work‐
shop ....................................................5 63
!Tu rnon the ignition torelease
th e parking brake ................................ 531
hTy repress. monitor cur rently
una vailable .......................................... 566
hTy repress. monitor inoperative
No wheel sensors ................................ 567
hTy repress. monitor inoperative ...566
Ty re pressure Check tyres ...................565
Ty re(s) ove rheated ...............................5 69 Index
609