2018 MERCEDES-BENZ C-CLASS CABRIOLET sensor

Display messages
Possible causes/consequences and 0050
0050Solutions
004D Check brake fluid level *T
here is insuf ficient brake fluid in the brake fluid reser voir. 000A
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. 0007
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. 0007
Consult a qualified specialist workshop. 0007
Do not top up the brake fluid. 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
Do not top up the brake fluid. 0007
Consult a qualified specialist workshop.
Radar sensors dirty See
Owner's Manual *T
heradar sensor sy stem is malfunctioning. Possible causes:
R soiling of the sensors
R heavy rain or snow
R extended country driving wi thout other traf fic, e.g. in the desert
Driving sy stems and driving saf ety sy stems may be malfunctioning or temp orarily una vailable. Display messages and
warning/indicator lamps 477

Display messages
Possible causes/consequences and 0050
0050Solutions 0007
In order toadjust theve hicle le vel during trailer operation, you must not drive at speeds greater than 30 km/h.
Blind Spot Assist currently
unavailable See Owner's
Manual *B
lind Spot Assist is temp orarily una vailable.
The sy stem limits ha vebeen reached (0013 page 237). 0007
Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again.
or 0007
Ifth e display message does not disappear, stop theve hicle while paying attention toroad and traf fic conditions
and restart the engine. 0007
If necessar y,clean there ar bumper. If the bumper is extreme lydirty, the sensors in the bumper may be mal‐
functioning. Active Steering Assist inop-
erative
*A
ctive Steering Assist is malfunctioning. Active Dis tance Assi stDISTRONIC remains available. 0007
Consult a qualified specialist workshop.
00CC Vehicle rising Please wait *T
hevehicle le vel is too lo w.The vehicle is raised tothe selected vehicle le vel. 0007
Wait until the display message disappears before pulling away. 486
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions
00B6 Reserve fuel level *T
he fuel supply has dropped into there ser verange. 0007
Refuel. Engine oil
Display messages
Possible causes/consequences and 0050
0050Solutions
00B3 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. 0007
Consult a qualified specialist workshop.
00B2 Engine oil level Reduce oil
level *D
isplay message only for cer tain engines:
The engine oil le vel is too high.
000E NO
TEEngine dama gecaused bydriving with excess engine oil 0007
Avoid long journe yswith excess engine oil. 0007
Consult a qualified specialist workshop immediately and ha vethe engine oil siphoned off. 500
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions
Rectify tyre pressure 0007
When the tyre pressure is cor rect, restart the tyre pressure monitoring sy stem (0013 page 435).
0077 Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
re cei ved. The tyre pressure monitoring sy stem is temp orarily una vailable. 0007
Drive on.
The tyre pressure monitoring sy stem restarts automatically as soon as the cause has been rectified.
0077
Wheel sensor(s) missing *T
he tyre pressure sensor signal is missing from one or more tyre(s). The pressure of the af fected tyre is not dis‐
pl ay ed. 0007
Have thefa ulty tyre pressure sensor replaced at a qualified specialist workshop.
0077 Tyre press. monitor inoper-
ative No wheel sensors *T
he wheels fitted do not ha vesuitable tyre pressure sensors. The tyre pressure monitoring sy stem is deactivated. 0007
Fit wheels with suitable tyre pressure sensors.
0077 *T
he tyre pressure monitoring sy stem is faulty. 512
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions
0049 Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. 0007
Turn the light switch tothe0058 position.
0049 Switch on headlamps *Y
ou are driving without lo w-beam headlamps. 0007
Turn the light switch tothe0058 or0058 position.
0049
Automatic driving lights
inoperative *T
he light sensor is faulty. 0007
Consult a qualified specialist workshop.
0049 Left dipped beam (Example)*T
he cor responding light source is defective. 0007
Drive on carefully. 0007
Consult a qualified specialist workshop immediatel y.
0009 LED light bulbs: the display message forth e cor responding lamp appears only when allthe light-emitting diodes
in the lamp ha vefailed. 524
Display messages and warning/indicator lamps

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

Calls with se
veral participants ............ .334
Declining ............................................. 334
Ending a call ........................................ 334
Incoming call during an existing call .... 335
Making ................................................ 334
Vi ath eove rhead control panel
(Mercedes me connect) ......................3 46
Camera see 360° Camera
see Reversing camera
Car key
see Key
Car wash
see Care
Car wash (care) ....................................... 396
Care ..........................................................4 05
Air-water duct ...................................... 395
Car wash ............................................. 396
Carpet .................................................4 05
Decorative foil .................................... .399
Displ ay................................................ 405
Draught stop ....................................... 402
Exterior lighting ................................... 403
Fo lding draught stop ........................... 403 High-pressure cleaner .........................3
97
Matt finish ........................................... 398
Pa int wo rk ............................................ 398
Plastic trim .......................................... 405
Re alwo od/trim elements ...................4 05
Re versing camera ................................ 403
Ro of lining ...........................................4 05
Seat belt .............................................. 405
Seat co ver ........................................... 405
Sensors ............................................... 403
Soft top ...............................................4 01
Ta ilpipes .............................................. 403
Tr ailer hit ch......................................... 403
Wa shing byhand ................................. 397
Wheels/rims ....................................... 403
Wi nd de flector .....................................4 01
Wi ndo ws .............................................. 403
Wi per blades .......................................4 03
Carpet (Care) .......................................... .405
Changing gears ........................................ 16 4
Manually ..............................................1 64
Changing hub caps .................................446 Changing
the lights
Driving abroad (symm etrical dipped
beam) .................................................. 127
Cha rging
Bat tery (vehicle) .................................. 420
Chassis Damping characteristics ...................... 213
DY NA MIC BODY CONTROL .................. 213
Child saf ety lock
Ac tivating/deactivating (multimedia
sy stem) ............................................... 293
Child seat Appr oval categories .............................. .56
At tach ing (no tes) ................................... 55
Basic instructions ..................................48
Fr ont passenger seat (no tes) ................. 71
Fr ont passenger seat (without auto‐
matic airbag shutoff) ............................. 71
ISOFIX/i-Size (fitting) ............................ 63
No tes on risks and dangers ...................49
Re commended child restra int sys‐
te ms ...................................................... 52
Seats suita blefor belt-secu redch ild
re stra int sy stems ................................... 67 Index
547

0025inope
rative See Owner's Man‐
ual ....................................................... 479
00E5 inope rative See Owner's Man‐
ual ....................................................... 480
007Ainoperati veSee Owner's Man‐
ual ........................................................ 476
0053 Inoperative .................................. 483
0049Intellige nt Light System inoper‐
ative ....................................................5 23
00AFKe y not de tected (white dis‐
pl ay messa ge)...................................... 51 5
00AF Key not de tected (red displ ay
messa ge).............................................5 14
0049 Left dipped beam (Example) ........ 524
0075Left windowbag malfunction
Consult workshop (Example) ............... 480
Limiter inoperative .............................. 494
Limiter passive .................................... 494
¢ Lowe ring ..................................... 491 0049Malfunction See Owner's Man‐
ual
....................................................... 525
00CBMaximum speed exceeded ..........4 94
Mercedes me connect Services limi‐
te d See Owner's Manual .....................483
Mo tor can be star ted again .................4 98
N permanently active Risk of vehicle
ro lling .................................................. 507
çOff .............................................. .492
00D9Off ............................................... 489
Only select Park (P) when vehicle is
st ationary ............................................ 508
0059 Open/close top comple tely ....... 522
00CAOpe ration only possible in
transmission position N .......................517
00CA Operation only possible in
transmission position P ........................516
0024 Parking brake See Owner's
Manual ................................................ .473 00AF
Place theke y in the mar ked
space See Owner's Manual ..................51 5
Please reduce speed ...........................4 85
00D7Please wait Charging high- volt‐
age battery .......................................... 499
PRE- SAFE inoperati veSee Owner's
Manual ................................................ 482
Ra dar sensors dirty See Owner's
Manual ................................................ 477
006F Rear left seat backrest not
loc ked (Example) .................................. 519
0077 Rectify tyre pressure ....................511
Re duce speed ...................................... 513
00C8 Refill Ad Blue Eng. start not pos‐
sible .................................................... 503
00C8Re fill Ad Blue See Owne r’s Man‐
ual .......................................................5 03
0024Re lease parking brake .................476
009E Replace air cleaner ...................... 497 Index
553