2019 MERCEDES-BENZ CLA COUPE light

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
÷ ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
At least one wheel and tyre assemb lyhas reached its traction limit (/ page193). #
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 drive sy stems and driving saf ety sy stems may also be malfunctioning. &
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. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop. 584
Display messages and warning/indicator lamps

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

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit.
7 Seat belt warning lamp
fl ashes The
red seat belt warning lamp flashes and an intermit tent wa rning tone sounds.
The driver or front passenger has not fastened their seat belt while theve hicle is in motion. #
Fasten your seat belt(/ page 39).
There are objects on the front passenger seat. #
Remo vethe objects from the front passenger seat. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function The
red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 197). Displ
aymessa ges and warning/indicator lamps 589

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

Ac
tive headlamps .................................... 131
Ac tive Lane Change Assi st...................... 215
Ac tivating/deactivating ...................... .217
Fu nction ............................................... 215
Ac tive Lane Keeping Assist .................... 24 9
Ac tivating/deactivating ...................... .251
Ac tivating/deactivating thewa rning .... 251
Fu nction .............................................. 24 9
Setting the sensitivity .......................... 251
Sy stem limitations ...............................2 49
Tr ailer operation .................................. 24 9
Ac tive Parking Assist .............................. 234
Cross Traf fic Alert ................................ 24 0
Drive AwayAssi st................................ 239
Exiting a pa rking space ...................... .237
Fu nction .............................................. 234
Manoeuvring assi stance ...................... 24 0
Pa rking ................................................ 236
Sy stem limitations ...............................2 34
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 211
Displ ay................................................. 211
Fu nction ............................................... 211Ac
tive Steering Assist ............................ .213
Ac tivating/deactivating ...................... .215
Ac tive Emergency Stop Assist .............. 217
Ac tive Lane Change Assi st................... 215
Displ ays in the instrument display .......2 17
Fu nction ............................................... 213
Sy stem limitations ...............................2 13
Ad aptive brake lights .............................. 203
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist
Fu nction .............................................. 13 3
Switching on/off ................................. 13 4
Ad aptive Highbeam Assist Plus
Fu nction .............................................. 13 4
Switching on/off ................................. 13 5
Ad Blue ®
.................................................... 51 8
Ad ditives .............................................. 51 8
Capacity .............................................. .519
Fill le vel .............................................. .264
No tes ................................................... 17 9
Purity ................................................... 51 8Ra
nge .................................................. 264
To pping up ...........................................1 79
Ad ditional door lo ck.................................. 80
Ad diti ves................................................... 519
Ad Blue ®
............................................... 51 8
Engine oil ............................................. 519
Fu el ...................................................... 516
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Adva nced sound sy stem ......................4 44
Burmes ter®
sur round sound sy stem ... 443
Ad justing the headlamp range ............... 12 9
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ... 443 Index
597

Ad
justing treble, mid- range and bass
settings
Adva nced sound sy stem ......................4 44
Burmes ter®
sur round sound sy stem ... 442
Ad vanced sound sy stem
Ac tivating/deactivating au tomatic
vo lume adjustment .............................. 444
Ad justing the balance/fader ............... 444
Ad justing treble, mid-range and bass
settings ............................................... 444
Calling up the sound menu .................. 443
Information .......................................... 443
Af ter-sales service centre
see ASS YST PLUS
Air conditioning menu Calling up ............................................ 14 8
Air conditioning sy stem
see Climate control
Air distribution Setting ................................................ .146
Setting (multimedia sy stem) ................1 48
Air inl et
see Air-water duct Air pressure
see Tyre pressure
Air vents ................................................... 154
Ad justing (front) .................................. 154
Ad justing (rear) .................................... 15 5
Air vents
see Air vents
Ai r-re circulation mode ............................ 14 9
Air-water duct .......................................... 452
Ke eping free ........................................4 52
Airbag ........................................................ .41
Ac tivation .............................................. 35
Fr ont airbag (driver, front passenger) ..... 41
Ins tallation locations .............................. 41
Knee airbag ............................................ 41
Overview ................................................ 41
PA SSENGER AIR BAG indicator lamp .... .46
Pr otection ..............................................42
Re duced pr otection ...............................43
Side impact airbag ................................. 41
Wi ndow airbag ....................................... 41
Airflow Setting ................................................ .146 Alarm sy
stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC
Alternative route
see Route
Ambient lighting Setting (multimedia sy stem) ................1 36
Android Auto ............................................ 407
Connecting a mobile phone ................. 408
Ending ................................................. 409
Information .......................................... 408
Overview ............................................. 407
Sound settings .................................... 408
Tr ans ferred vehicle data ......................4 09
Android Auto™
Control using the application buttons
.............................................................4 09
Animals Pets in theve hicle ................................. 75
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem) 598
Index

Anti-skid
chains
see Snow chains
Anti-theft ala rmsystem
see ATA (anti-theft alarm sy stem)
Anti-theft pr otection
Ad ditional door lock .............................. 80
Immobiliser ............................................ 97
Anti-theft pr otection
see ATA (anti-theft alarm sy stem)
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay™ ....................................... 405
Connecting an iPhone ®
....................... 406
Control using the application buttons
.............................................................4 07
Ending ................................................ .407
No tes .................................................. 406
Overview ............................................. 405
Sound settings .................................... 407
Tr ans ferred vehicle data ......................4 09Ashtr
ay
Using ................................................... 12 0
Assistance sy stems
see Driving saf ety sy stem
Assistant display Menu (on-board computer) .................. 265
ASS YST PLUS ........................................... 445
Battery disconnection periods ............ 446
Displ aying the service due date ..........4 45
Fu nction/no tes ................................... 445
Re gular maintenance work .................. 445
Special service requ irements .............. 445
ATA (anti-theft ala rmsystem) .................. .97
Deactivating the alarm .......................... 98
Fu nction ................................................ 97
Fu nction of interior pr otection ............... 99
Priming/deactivating interior pr otec‐
tion ........................................................ 99
Priming/deactivating tow- aw ay pro‐
te ction ................................................... 99
To w- aw ay protection function ................98
AT TENTION ASSI ST.......................... 240, 24 2
Fu nction .............................................. 24 0
Setting ................................................. 24 2Sy
stem limitations ...............................2 40
At tention assistant
see ATTENTION ASSIST
Au gmented reality
see Route guidance with augmented reality
Au thorised workshop
see Qualified specialist workshop
Au tomatic car wash mode
Ac tivating ............................................ 453
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights .........................12 9
Au tomatic engine start (ECO start/
sto p function) .......................................... 16 3
Au tomatic engine stop (ECO start/
sto p function) .......................................... 16 3
Au tomatic front passen ger front air‐
bag deacti vation sy stem
see Automatic front passenger front
airbag shutoff Index
599