2020 MERCEDES-BENZ C-CLASS ESTATE check engine

Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions #
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.
; Engine diagnosis warning
lamp *T
he 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 *T
hered elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Notethe messages on the multifunction displa y.51 0
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
J Brake sy stem warning lamp
(yellow) *T
he yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, obse rve it. #
Consult a qualified specialist workshop.
J Brake sy stem warning lamp
(red) *T
he red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes:
R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
R The reis insuf ficient brake fluid in the brake fluid reser voir. #
Notethe messages on the multifunction displa y. &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in emergency braking situations. 512
Displaymessa ges and warning/indicator lamps

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 *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
or
The yellow ESP ®
wa rning lamp is lit while the engine is running.
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion:
One or more wheels has reached its grip limit (/ page194). #
Adapt your driving style to suit thero ad and weather conditions.
The yellow ESP warning 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. Display messages and
warning/indicator lamps 515

Contacts
Calling up.............................................. 328
Deleting................................................ .329
Downloading (from mobile phone)......... 327
Importing.............................................. 328
Importing (o verview)............................. 328
Information........................................... .327
Making a call......................................... 329
Na me form at......................................... 328
Options................................................ .329
St oring..................................................3 29
Controller Operating.............................................. 273
Con venience closing ................................... 88
Con venience opening ..................................88
Coolant (engine) Check le vel............................................ 385
No tes....................................................4 45
Cooling see Clima tecontrol
Co pyright..................................................... 36
Cornering light ...........................................1 32
Cross Traf fic Alert..................................... 24 3Crosswind Assist
Function/no tes..................................... 19 6
Cruise control Activating.............................................. 202
Buttons.................................................. 202
Calling up a spee d................................. 202
Deactivating.......................................... 202
Fu nction................................................ 200
Re quirements........................................ 202
Selecting.............................................. .202
Setting a speed..................................... 202
St oring a speed.....................................2 02
Sy stem limitations................................. 200 D
Dashboard see Cockpit
Data acquisition Vehicle.................................................... 33
Data import/export Function/no tes..................................... 286
Importing/exporting............................. 287
Data pr otection rights
Data storage............................................ 36 Data
storage
Data pr otection rights............................. 36
Electro nic control units........................... 33
Online service s........................................ 35
Ve hicle.................................................... 33
Date Setting the time and date automati‐
cally....................................................... 281
Deactivating the alarm (A TA )...................... 94
Deale rship
see Qualified speciali stwo rkshop
Declaration of conformity Electromagnetic compatibility.................25
Jack......................................................... 28
Specific absor ption rate.......................... 25
TIREFIT kit............................................... 29
Wi reless vehicle components.................. 25
Decorative foil (cleaning instructions) .... 389
DeNOx agent see AdBlue ®
De stination
Editing intermediate destinations......... .298
Editing the pr evious destinations.......... 309 Index
527

é
ATTENTION ASSIS T:Take a
break!....................................................4 76
: Automatic driving lights inoper‐
ative...................................................... 457
Á Change key bat teries ...................4 55
J Checkbrake fluid le vel................. 475
# Check brake pads See Owner's
Manual .................................................. 475
5 Check engine oil le vel when
next refuelling....................................... 502
ï Checktrailer hitch lo ck................ 462
h Check tyre(s)................................ 496
! Clean the fuel filter ...................... 468
ÿ Coolant Stop vehicle Switch
engine off..............................................4 67
! currently una vailable See Own‐
er's Manual .......................................... .487
÷ currently una vailable See Own‐
er's Manual .......................................... .488 5
Engine oil le vel cannot be
measured .............................................. 504
5 Engine oil le velRe duce oil le vel.... 503
5 Engine oil le velSt op vehicle
Switch engine off.................................. 503
5 Engine oil pressure Stop
Switch off engine.................................. 504
ä Fault Drive at max. 80 km/h........ 484
6 Front left malfunction Consult
wo rkshop (e xample).............................. 452
& inoperative Battery low................. 461
& inoperative Refuel vehicle .............4 61
& inoperative See Owner's Man....... 461
! inoperative See Owner's Man‐
ual......................................................... 488
÷ inoperative See Owner's Man‐
ual......................................................... 489
T inoperative See Owner's Man‐
ual......................................................... 490
G Inoperati ve................................... 492 :
Intelligent Light Sy stem inoper‐
ative...................................................... 458
Á Key not de tected (red displ ay
messa ge)............................................... 456
Á Key not de tected (white display
messa ge)............................................... 455
: Left dipped beam (e xamp le)........ .457
6 Left windowbag malfunction
Consult workshop (e xample)................ .452
¢ Lowe ring..................................... .485
: Malfunction See Owner's Man‐
ual......................................................... 457
ð Maximum speed exceeded ........... 479
Ø ..................................................... 499
ç Off................................................ 478
ë Off................................................ 476
! Parking brake See Owner's
Manual .................................................. .471
É Please reduce speed .................... 486 Index
529

EBD (Electronic Brake
forc e Distribu‐
tion)
Function/no tes..................................... 19 6
ECO Assist Function/no tes...................................... 171
ECO display Function................................................ 17 0
ECO start/s top function
Au tomatic engine start.......................... 16 8
Au tomatic engine stop...........................1 68
Operation.............................................. 16 8
Switching off/on................................... 17 0
Electric pa rking brake
Applying automaticall y.......................... 188
App lying or releasing manuall y.............. 19 0
Emergency braking................................ 19 0
Re leasing automaticall y......................... 189
Electrical fuses see Fuses
Electromagnetic compatibility Declaration of conformity........................ 25
Electronic Stability Prog ram
see ESP ®
(Electronic Stability Prog ram) Emer
gency
Fire extinguisher.................................... 395
Fir st-aid kit (so ftsided).........................3 95
Overview of the help functions................ 18
Re moving thewa rning triangle.............. 394
Saf etyve st............................................. 394
Setting up thewa rning triangle............. 395
Emer gency braking ................................... 19 0
Emer gency braking
see BAS (Brake Assi stSystem)
Emer gency engine start............................ 413
Emer gency key
Inserting/removing................................. 74
Locking a door........................................ 79
Un locking a door..................................... 79
Un locking theta ilgate............................ .85
Emer gency operation mode
St arting theve hicle...............................1 63
Emer gency spare wheel
No tes..................................................... 431
ENERGIZING COMFORT Overview of programmes.......................2 91
St arting the programme........................ 292 Engine
ECO start/ stop function........................ 16 8
Engine number...................................... 435
St arting (eme rgency operation mode)...1 63
St arting (Remo teOnline).......................1 64
St arting (s tart/s top button).................. 16 2
St arting assis tance................................ 406
Switching off (s tart/s top button).......... 185
Engine bonnet Function (active bonnet)........................ 379
Opening/closing................................... 380
Engine data Displaying..............................................1 74
Engine electronics Notes....................................................4 33
Engine number......................................... .435
Engine oil Additives...............................................4 43
Capacity................................................ 444
Checking the oil le vel using the oil
dipstick................................................. 382
Checking the oil le vel using the on-
board computer..................................... 383
MB-Fr eigabe or MB-Appr oval................ .444 534
Index