warning MERCEDES-BENZ C-CLASS CABRIOLET 2018 Owners Manual

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

Seat belt
Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
0076 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. 0007
Fasten your seat belt (0013 page37).
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit.
0076 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. 0007
Fasten your seat belt(0013 page37).
There are objects on the front passenger seat. 0007
Remo vethe objects from the front passenger seat. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
00CC The
yellow AIRMATIC warning lamp is on.
The yellow DYNA MIC BODY CONTROL warning lamp is on.
There is a fault with the AIRMATIC. 534
Display messages and warning/indicator lamps

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

Ty
res Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
0077 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. 000A
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.
Yo u could then lose control of theve hicle. 0007
Obser vethere commended tyre pressures. 0007
Adjust the tyre pressure if necessar y. 0007
Stop theve hicle, paying attention toroad and traf fic conditions. 0007
Check the tyre pressure and the tyres.
0077 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. 538
Display messages and warning/indicator lamps

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

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions 0007
Consult a qualified specialist workshop. 0007
Obser vethe messages on the multifunction displa y.
00CA
Tr ailer tow hit chwarning
lamp The
red trailer tow hit chwarning lamp is on.
The trailer tow hit chis not operational or swivels. 000A
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. 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. 0007
Uncouple the trailer and secure it against rolling away. 0007
Initiate a new swivelling procedure and do not re-couple the trailer until the display message disappears. 0007
Obser vethe messages on the multifunction displa y.
If th e trailer hitch swivels: 0007
Wait until the ball coupling has reached the operational position. 540
Displaymessa ges and warning/indicator lamps

G
Garage door opener Clearing the memory ........................... 178
Opening or closing the door ................1 77
Programming buttons .......................... 175
Ra dio equipment appr oval numbers .... 178
Re solving problems ............................. 17 7
Synchronising thero lling code ............ .176
Gearshift recommendation ............162, 16 5
Genera l operating permit number
(EU) .......................................................... .456
Genuine parts ............................................ 22
Glide mode ............................................... 16 6
Glo vebox
Locking/unlocking .............................. .116 H
Handbrake see Electric parking brake
Handling characteristics (unusual) ........431
Hazard warning lights ............................ .130 HD prog
rammes
see CI+ module
Head airbag ............................................... 39
Head le vel heating (AIRSCARF) ..............109
Head restra int
Fr ont (adjusting mechanically) .............1 04
Re ar (fitting/removing) ........................ 105
Head-up display ....................................... 261
Ad justing display elements (on-board
compu ter) ............................................ 261
Ad justing the brightness (on-board
computer) ............................................ 261
Fu nction ............................................... 261
Menu (on-board compu ter) .................. 261
Setting the position (on-board com‐
puter) ................................................... 261
Switching on/off ................................. 262
Headla mpflasher ................................... .129
Heating see Clima tecontrol
High beam Adaptive Highbeam Assist .................. .132
Switching on/off ................................. 12 9High-pressure cleaner (care)
.................. 397
Hill Start Assist ........................................ 211
HOLD function ......................................... .211
Fu nction/no tes .................................... 211
Switching on/off ................................. 212
Hooking the luggage net .........................118
Hotspot Setting up (Wi-Fi) ................................. 291 I
i-Size child seat securing sy stem
Fitting .................................................... 63
Seats suitable for attaching ................... 62
Identification plate Engine ................................................. 456
Ve hicle ................................................ 456
Ignition Switching on (S tart/S top button) ........ 147
Ignition key
see Key
Immobiliser ................................................ 96 Index
559

Implied
warranty
Ve hicle .................................................. 28
In Car Of fice
Calling up ............................................ 340
Fe atures .............................................. 340
Marking a to-do entry as compl eted ....3 41
Noting an incoming call ...................... .341
Selecting functions .............................. 340
Switching au tomatic start on/off ........ 340
Indicator lamps see Warning/indicator lamps
Individual drive prog ram
Con figuring .......................................... 16 0
Selecting ............................................. 15 9
Inspection see AS SYST PLUS
Instrument clus ter
see Instrument display
Instrument display ..................................2 50
Ad justing the lighting .......................... 255
Fu nction/no tes ................................... 250
Instrument clus ter ................................. 10
Setting the additional value range ....... 253
Wa rning/indicator lamps .................... .527 Instrument lighting
.................................255
Intelligent Light Sy stem .......................... 13 0
Ac tive headla mps ................................ 13 0
Ad aptive Highbeam Assist .................. .132
Ad versewe ather light .......................... 13 2
City lighting ........................................ .132
Cornering light ..................................... 131
Fo g light (extended range) ................... 131
Mo torw ay mode ................................... 131
Overview ............................................. 13 0
Switching on/off ................................. 13 2
Interior lighting ........................................ 13 5
Ambient lighting .................................. 13 6
Re ading light ........................................ 13 5
Setting ................................................. 13 5
Switch-off del aytime ........................... 13 6
Interior pr otection
Fu nction ................................................ 98
Priming/deactivating ............................. 99
In term ediatedestination
Calculating a route with intermediate
destinations ........................................ 306
En tering ............................................... 305
Modifying ............................................ 306 St
arting an automatic filling station
sear ch................................................. 305
St arting the automatic service sta‐
tion sear ch........................................... 312
Internet Calling up a web page .........................3 56
Closing the br ows er ............................3 58
Deleting a bookma rk........................... 358
Del eting br owser data .........................3 58
Managing bookma rks .......................... 358
Internet connection Cancelling permission (mobile
phone) .................................................3 55
Communication module function ....... .353
Connection status .............................. .355
Displ aying the connection status ........ 355
Editing access data (Blue tooth®
) .........3 54
Es tablishing .........................................3 55
Information .......................................... 352
Mobile phone de tails .......................... .355
Re strictions ......................................... 352
Setting access da ta(Blue tooth ®
) ........ 353
Setting up (Blue tooth®
) .......................3 53
Setting up (Wi-Fi) ................................. 353 560
Index