2019 MERCEDES-BENZ CLA COUPE warning

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

Car-to-X-Communication
Displaying hazard warnings ................ .371
Overview ..............................................3 71
Sending hazard warnings .................... .372
Care .......................................................... 460
Air-water duct ...................................... 452
Car wash ............................................. 452
Carpet .................................................4 60
Decorative foil .................................... .456
Displ ay................................................ 460
Exterior lighting ................................... 458
High-pressure cleaner ......................... 454
Matt finish ........................................... 455
Pa int wo rk ............................................ 455
Plastic trim .......................................... 460
Re alwo od/trim elements ...................4 60
Re versing camera ................................ 458
Re versing camera/360° Camera ........ 458
Ro of lining ...........................................4 60
Seat belt .............................................. 460
Seat co ver ........................................... 460
Sensors ............................................... 458
Ta ilpipes .............................................. 458
Tr ailer hit ch......................................... 458
Wa shing byhand ................................. 454 Wheels/rims ....................................... 458
Wi
ndo ws .............................................. 458
Wi per blades .......................................4 58
Carpet (Care) .......................................... .460
Changing bulbs ........................................ 137
Dipped beam ....................................... 13 9
Fitting/removing co ver (front wheel
ar ch ) .................................................... 13 9
Main beam ...........................................1 39
No tes ................................................... 137
Overview ............................................. 13 8
Re versing lights .................................. .139
Tu rn signal lights (rear) ........................ 13 9
Changing gears ........................................ 172
Manually ..............................................1 72
Changing hub caps .................................500
Changing the lights
Driving abroad (symm etrical dipped
beam) .................................................. 12 8
Cha rging
Bat tery (vehicle) ...................................4 74
USB port ..............................................1 24Child saf
ety lock
Ac tivating/deactivating (multimedia
sy stem) ............................................... 332
Re ar door .............................................. .73
Re ar side wind ows................................. 74
Child seat App rova l categories .............................. .57
At tach ing (no tes) ................................... 56
Basic instructions ..................................50
Fr ont passenger seat (no tes) ................. 71
Fr ont passenger seat (without auto‐
matic airbag shutoff) ............................. 70
ISOFIX/i-Size (fitting) ............................63
No tes on risks and dangers ...................51
Re commended child restra int sys‐
te ms ...................................................... 54
Seats suitable for belt-secu redch ild
re stra int sy stems ................................... 67
Seats suitable for i‑Size child
re stra int sy stems ................................... 62
Seats suitable for ISOFIX child
re stra int sy stems ................................... 59
Securing on the front passenger seat ....72
Secu ring on there ar seat ...................... 69
To pTe ther ..............................................65 602
Index

dVe
hicle is operational Switch
off the ignition before exiting .............. .572
h Warning tyre defect .....................568
hWheel sensor(s) missing .............. 567
Wi thout changing gear, consult work‐
shop ..................................................... 561
Display on the windscreen
see Head-up display
Distance control see Active Dis tance Assi stDISTRONIC
Di stance recorder
see Trip dis tance
DI STRO NIC
see Active Dis tance Assi stDISTRONIC
Door Additional door lock .............................. 80
Child saf ety lock (rear door) .................. 73
Locking (emergency key) ...................... .84
Opening (from the inside) ......................80
Un locking (emer gency key) .................. .84
Un locking (from the inside) ...................80
Door cont rol panel .................................... .16Dr
aw bar
see Tow- bar sy stem
Drinks holder see Cup holder
Drive Away Assist .................................... 239
Drive Away Assist
see Pr otection against collision
Drive position Enga ging ..............................................1 72
Drive prog ram display ............................. 16 6
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving abroad Symmetrical dipped beam ...................1 28
Driving lights see Automatic driving lights
Driving saf ety sy stem ............................ .191
ABS (Anti-lo ckBraking Sy stem) ........... 19 2
Ac tive Brake Assi st.............................. 197
Ad aptive brake lights .......................... .203
BA S (Brake Assi stSystem) .................. 19 2EBD (Electronic Brake
forc e Distribu‐
tion) ..................................................... 19 6
ESP ®
Crosswind Assi st........................ 19 6
ESP ®
trailer stabilisation .................... .196
Overview .............................................. 191
Ra dar sensors ...................................... 191
Re sponsibility ...................................... 191
ST EER CONTROL ................................. 19 6
Driving sy stem
Suspension with adaptive damping
adjustment .......................................... 221
Driving sy stem
see 360° Camera
see Active Blind Spot Assi st
see Active Dis tance Assi stDISTRONIC
see Active Emergency Stop Assist
see Active Lane Change Assi st
see Active Lane Keeping Assist
see Active Parking Assist
see Active Speed Limit Assi st
see Active Steering Assist
see ATTENTION ASSIST
see Blind Spot Assist
see Cruise control
see Driving saf ety sy stem 61 0
Index