check engine MERCEDES-BENZ C-CLASS CABRIOLET 2018 Owner's Manual

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
Ye llow elect ric pa rking
brake indicator lamp is mal‐
functioning
004D
Brake sy stem warning lamp
(yellow) The
yellow brake sy stem warning lamp is lit while the engine is running. 000A
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. 0007
Drive on carefull y. 0007
Have the brake sy stem checked immediately at a qualified specialist workshop. 0007
Adjust your speed and continue todrive carefull y,leaving a suitable dis tance totheve hicle in front. 0007
Ifth e multifunction display sho wsa display message, please obse rveth is. 0007
Consult a qualified specialist workshop.
00E5 ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
At least one wheel and tyre assembly has reached its traction limit (0013 page185). 0007
Adapt your driving style to suit thero ad and weather conditions. Display messages and
warning/indicator lamps 531

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions 0007
Drive on carefull y. 0007
Only deactivate ESP ®
for as long as the situation requ ires.
If ESP ®
cannot be activated, ESP ®
is malfunctioning. 0007
Have ESP ®
ch ecked immediately at a qualified specialist workshop. 0007
Obser vethe no tes on deactivating ESP ®
(0013 page185).
0075
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 (0013 page 33). 000A
WARNING Risk of inju ryor fata l injury due toa malfunction 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 might not
be triggered at all in theeve nt of an accident. This may af fect the seat belt tensioner or airbag, forex ample. 0007
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. 0007
Drive on carefully. 0007
Obser vethe messages on the multifunction displa y. 0007
Consult a qualified specialist workshop immediatel y. Displ
aymessa ges and warning/indicator lamps 533

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
Suspension warning lam pT here is a fault in theDY NA MIC BODY CONTROL. 0007
Obser vethe messages on the multifunction displa y.
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. 0007
Be prepared tobrake immediatel y. 0007
Increase the dis tance.
Fu nction of Active Brake Assi st . Engine
Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
00B9 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. 0007
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. Displ
aymessa ges and warning/indicator lamps 535

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions 0007
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.
003D Elect rical fault warning
lamp The
red elect rical fault warning lamp is lit.
There is a fault in the electrics. 0007
Obser vethe messages on the multifunction displa y.
00B6
Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel supply has dropped into there ser verange. 0007
Refuel.
00AC
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. 536
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions 000A
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. 0007
Before opening the bonn et, allow the engine tocool down. 0007
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. 0007
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. 0007
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: 0007
Consult a qualified specialist workshop.
or 0007
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. 0007
Check the coolant le vel (0013 page 394). 0007
Make sure that the air supply tothera diator is not obstructed. 0007
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. Displ
aymessa ges and warning/indicator lamps 537

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
Ty re pressure monitoring
sy stem warning lamp
fl ashes 000A
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. ‑ 0007
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. 0007
Consult a qualified specialist workshop. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
00CC Po we rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer-assis tedsteering or thesteering itself is malfunctioning. 000A
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. 0007
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. Display messa
ges and warning/indicator lamps 539

Importing (o
verview) .......................... .336
Information .......................................... 335
Making a call ....................................... 337
Na me form at ...................................... .336
Options ................................................ 337
St oring .................................................3 37
Controller Operating ............................................ 280
Con venience closing ................................. 87
Con venience opening ................................ 87
Coolant (engine) Check le vel .......................................... 394
No tes .................................................. 466
Cooling see Climate control
Co pyright .................................................... 31
Cornering light ........................................ .131
Cross Traf fic Alert .................................. .232
Crosswind Assist Function/no tes ................................... 188
Cruise control .......................................... 19 5
Ac tivating ............................................ .197 Buttons ................................................
197
Calling up a speed .............................. .197
Deactivating ......................................... 197
Fu nction .............................................. 19 5
Re quirements ...................................... 197
Selecting .............................................. 197
Setting a speed .................................... 197
St oring a speed .................................... 197
Sy stem limitations ...............................1 95
Cup holder Rear ben chseat ................................... 121
Cup holder in the centre console
In stalling/removing ............................ .120
ins talling/ removing (auto matic
transmission) ....................................... 12 0 D
Damage de tection (pa rked vehicle) .......182
Dashboard see Cockpit
Dashboard lighting see Instrument lighting
Data acquisition Vehicle .................................................. 29 Data import/export
................................ 293
Fu nction/no tes ................................... 293
Importing/exporting ........................... 294
Data storage
Electronic control units ........................ .29
Online services ...................................... 30
Ve hicle .................................................. 29
Date Setting the time and date automati‐
cally ..................................................... 288
Deactivating the alarm (A TA).................... 97
Deale rship
see Qualified speciali stwo rkshop
Declaration of conformity Electromagnetic compatibility ............... 25
Jack .......................................................25
TIREFIT kit ............................................. 26
Wi reless vehicle components ................25
Decorative foil (cleaning instructions)
.................................................................. .399
DeNO x agent
see AdBlue ® Index
549

0049Au
tomatic driving lights inoper‐
ative .................................................... 524
Au xilia rybattery malfunction .............. 506
0044Before starting the engine, turn
th esteering wheel. .............................. 508
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 486
Blind Spot Assist inope rative ............... 487
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...4 90
Brake immediate ly............................... 472
Cann otstart engine See Owner's
Manual ................................................ 498
00AFChan gekey bat teries ...................5 15
004D Check brake fluid le vel................ 477
Check brake pads See Owner's Man‐
ual ...................................................... .485
00B2Che ckeng. oil le v.when next
re fuelling ............................................. 502 00CAChe
cktrailer hitch lo ck(white
display message) .................................5 17
Check tyre pressures then restart
Ru n Flat Indicator ................................. 513
0077 Check tyre(s) ................................ 511
003A Clean the fuel filter .................... .496
0058 Close boot sepa rator .................. 523
Clutch overheated Avoid pulling away
fo r XX:XX mins ..................................... 507
0059 Convertible Top Operation pos‐
sible to60 km/h ................................. 522
00ACCoolant Stop vehicle Switch
engine off ............................................ 498
Cruise contro l and Limiter inope ra‐
tive ...................................................... 493
Cruise control inope rative ................... 493
Cruise control off ................................ 493
0025cu rrently unavailable See Own‐
er's Manual .......................................... 47800E5
currently una vailable See Own‐
er's Manual .......................................... 472
Dep ress clutch fully tostart engine .....5 07
00B3 Engine oil le vel cannot be
measured ............................................ 500
00B2Engine oil le velRe duce oil le vel...5 00
00B2Engine oil le velSt op vehicle
Switch engine off ................................. 501
00B2Engine oil pressure Stop Switch
off engine ............................................ 501
Fa ult Drive at max. 80 km/h ...............490
0075Fr ont left malfunction Consult
wo rkshop (Example) ............................4 83
006FFr ont left seat backrest not
loc ked (Example) .................................. 519
Fr ont-passenger airbag disabled See
Owner's Manual ..................................4 82
Fr ont-passenger airbag enabled See
Owner's Manual ................................... 481552
Index

,Re
placekey See Owner's Man‐
ual ........................................................ 516
00AF Replace key ................................ .515
00B6 Reser vefuel le vel........................ 500
0075Re stra int sys. malfunction Con‐
sult workshop ...................................... 484
Re versing not poss. Consult work‐
shop ....................................................5 06
Risk of vehicle rolling Driver door
open and transmission not in P ...........508
Ru n Flat Indicator inope rative .............. 514
003D See Owner's Manual ................... 495
Speed limit (winter tyres) XXX km/h ... 494
00CCSt eering malfunction Incre ased
ph ysical ef fort See Owner's Manual .... 520
00CCSt eering malfunction See Own‐
er's Manual ......................................... 508
00CCSt eering malfunction Stop
immediately See Owner's Manual ........519 St
op vehicle Lea veengine running
Wa itTransmission cooling ...................505
003DSt opvehicle Lea veengine run‐
ning ..................................................... 496
003DSt opvehicle See Owner's Man‐
ual .......................................................4 97
00CC Stop vehicle Vehicle too low ........ 490
çsuspended ..................................4 92
0049Switch off lights .......................... 524
0049Switch on headla mps.................. 524
To shift out of P or N,depress brake
and start engine .................................. 506
0059 Top lo wering ............................... 522
00C8To p upAdBlue Perf.re duced in
XXX miles See Owner's Manual ...........505
00C8 Top up AdBlue Perf.re duced:
XXX km/h Nostart in XXX km ............ 504
To p up coolant See Owner ’sManual ... 496
00B2To p upwasher fluid .................... .521 Tr
af fic Sign Assi stCamera view
re stricted See Owner's Manual ........... 489
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ...................... 488
Tr af fic Sign Assi stinope rative ............. 488
00CATr ailer coupling extending… .........516
Tr ansmission Malfunction Stop ........... 505
0024Tu rnon the ignition torelease
th e parking brake ................................ 473
0077 Tyre press. monitor cur rently
una vailable .......................................... .512
0077 Tyre press. monitor inoperative
No wheel sensors ................................ 512
0077 Tyre press. monitor inoperative ...512
Ty re pressure Check tyres ...................509
Ty re(s) ove rheated ...............................5 13
00CC Vehicle rising Please wait............ 486
00CCVe hiclerising ...............................4 89
0077Wa rning tyre defect .....................510
0077 Wheel sensor(s) missing ..............512 554
Index

Emer
gency engine start .......................... 427
Emer gency key
Inserting/removing ................................ 76
Locking a door ....................................... 82
Un locking a door .................................. .82
Emer gency operation mode
St arting theve hicle ............................. 15 0
Emer gency spare wheel .......................... 451
No tes ................................................... 451
Re moving ............................................ 452
ENERGIZI NGcomfort
Overview of programs ........................ .299
St arting the program ........................... 300
Engine ECO start/ stop function ......................1 54
Engine number .................................... 456
St arting (Digital Vehicle Keyst icke r) .... 14 9
St arting (eme rgency operation
mode) .................................................. 15 0
St arting (mobile phone) ...................... .149
St arting (Remo teOnline) ......................1 51
St arting (s tart/s top button) .................1 48
St arting assis tance .............................. 420
Switching off (s tart/s top button) .........1 73Engine bonnet
Function (active bonnet) ...................... 388
Opening/closing ................................. 389
Re setting (active bonnet) .................... 388
Engine data Displaying ............................................ 16 0
Engine electronics Notes ................................................... 454
Engine number ........................................4 56
Engine oil ................................................. 392
Ad ditives .............................................4 64
Capacity .............................................. 465
Checking the oil le vel using the oil
dipstick ................................................ 391
Checking the oil le vel using the on-
board computer ................................... 392
MB-Fr eigabe or MB-Appr oval .............. .465
Quality ................................................. 465
To pping up ...........................................3 92
Entering characters
Fu nction/no tes ................................... 285
On theto uchpad .................................. 287
Using the controller ............................. 286 EQ Boost
Glide mode .......................................... 16 6
Operating saf ety .................................... 23
ERA-G LONA SS test mode
St arting/ending .................................. 352
ESC (Elect ronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assist ................................. 188
Tr ailer stabilisation .............................. 188
ESP ®
(Electronic Stability Prog ram) ...... 185
Ac tivating/deactivating ...................... .188
Fu nction/no tes ................................... 185
EU general operating permit number ....456
Exterior lighting Care .................................................... 403
Ex terior lighting
see Lights
External device Locking (child saf ety lock) .................. .293 Index
557