2019 MERCEDES-BENZ CLA COUPE Owners Manual

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
? Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
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, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. #
Obser vethe 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. Display messages and
warning/indicator lamps 591

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

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tyre pressure and the tyres.
h Ty re pressure monitoring
sy stem warning lamp
fl ashes The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) flashes for appro ximately one
minu teand then remains lit.
The tyre pressu remonitoring sy stem is faulty. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
If th e tyre pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure loss in
one or more of the tyres.
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 593

Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp The
red trailer tow hit chwarning lamp is on.
The trailer tow hit chis not operational or swivels. &
WARNING Risk of an accident if the ball neck is not loc ked
If th e ball neck is not in the loc ked position, the trailer may come loose. #
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. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedure and do not re-couple the trailer until the display message disappears. #
Obser vethe messages on the multifunction displa y.
If th e trailer hitch swivels: #
Wait until the ball coupling has reached the operational position.
Ù
Wa rning lamp for electric
po we rst eering The
redwa rning lamp for electric po werst eering is lit while the engine is running.
The po wer-assis tedsteering 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. 594
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
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. #
Obser vethe messages on the multifunction displa y. Displ
aymessa ges and warning/indicator lamps 595

1,
2, 3 ...
4MATIC ..................................................... 175
Fu nction ............................................... 175
12 V battery
see Battery (vehicle)
12 V so cket
see Soc ket (12 V)
11 5 V soc ket
see Soc ket (1 15 V)
230 V soc ket
see Soc ket (230 V)
360° Camera ........................................... 230
Ca re .................................................... 458
Fu nction .............................................. 230
Opening the camera co ver (r eve rsing
camera) .............................................. .234
Selecting a view .................................. 233
Setting favo urites ................................ 234
Swit ching automatic operation
on/off (r eversing camera) .................. .233 A
A/C function Activating/deactivating (multimedia
sy stem) ................................................ 14 8
Switching on/off (control panel) .......... 147
ABS (Anti-lock Braking Sy stem) ............ .192
Ac celeration
see Kickdown
Ac cess data
Setting (Blue tooth®
) ............................ 422
Ac cident and breakdown manage‐
ment
Mercedes me connect .......................... 411
Ac oustic locking verification signal
Ac tivating/deactivating ......................... 77
Ac tivating/deactivating automatic
vo lume adjustment
Ad vanced sound sy stem ......................4 44
Burmes ter®
sur round sound sy stem ... 442
Ac tive Blind Spot Assi st.......................... 24 6
Ac tivating/deactivating ...................... .249
Brake application ................................. 24 8
Fu nction .............................................. 24 6Sy
stem limitations ...............................2 46
Tr ailer operation .................................. 24 8
Ac tive bonn et(pedestrian pr otection) ..446
Operation ............................................ 446
Re setting ............................................. 446
Ac tive Brake Assi st
Fu nction/no tes .................................... 197
Setting ................................................. 202
Ac tive Di stance Assist DISTRO NIC........ 207
Ac tive Emergency Stop Assist .............. 217
Ac tive Lane Change Assi st................... 215
Calling up a speed .............................. .209
Displ ays in the instrument display .......2 17
Fu nction .............................................. 207
Increasing/decreasing speed .............. 209
Re quirements: .................................... .209
Ro ute-based speed adap tation ........... .212
Selecting ............................................. 209
St eering wheel buttons ....................... 209
St oring a speed ................................... 209
Switching off/deactivating .................. 209
Switching on/activating ......................2 09
Sy stem limitations ...............................2 07
Ac tive Eme rgency Stop Assist ................ 217 596
Index

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