2018 MERCEDES-BENZ C-CLASS COUPE sensor

Before pu
rchasing and using non-appr oved
accesso ries, visit a qualified specialist workshop
and enquire about:
R Suitability
R Legal stipulations
R Factory recommendations 000A
WARNING Risk of accident wi thhigh
per form ance tyres
The special tyre tread in combination with
th e optimised tyre compound, means that
th erisk of skidding or hydroplaning on wet
ro ads is inc reased.
In addition, the tyre grip is greatly reduced at
a low outside temp erature and tyre running
te mp erature. 0007
Switch on the ESP ®
and adapt your
driving style accordingly. 0007
Use M+S tyres at outside temp eratures
of less than 50 °F. Obse
rveth efo llowing when selecting, fitting and
re placing tyres:
R Countr y-specific requirements for tyre
appro valth at define a specific tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can
be highly beneficial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOEx tended
tyres) and the same make.
R Only fit wheels of the same size on one axle
(left and right).
It is only permissible tofit a di fferent wheel
size in theeve nt of a flat tyre in order to
drive tothe specialist workshop.
R Only fit tyres of the cor rect size onto the
wheels.
R Do not make any modifications tothe brake
sy stem, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral operating pe rmit. R
Vehicles with a tyre pressure monitoring
sy stem: allfitted wheels mu stbe equipped
with functioning sensors forth e tyre pres‐
sure monitoring sy stem.
R Attemp eratures below 7 °C, use winter tyres
or all-season tyres mar ked M+S for all
wheels.
Wi nter tyres bearing the004D snowflake
symbol in addition tothe M+S marking pro‐
vide the best possible grip in wintry road
conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres fitted.
If th is is below theve hicle's maximum speed,
th is must be indicated byan appropriate
label in the driver's field of vision.
R Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear. 446
Wheels and tyres

The proportion of cor
rosion inhibitor/antifreeze
concentrate in the engine cooling sy stem should
be:
R a minimum of 50% (antifreeze pr otection
down toappr oximately -37 °C)
R a maximum of 55% (antifreeze pr otection
down to-45 °C) Note
s on windscreen washer fluid Obser
vethe no tes on operating fluids
(0013 page 461). 000A
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact wi thhot engine component parts or
th eex haust sy stem. 0007
Make sure that no windsc reen washer
concentrate spills out next tothefiller
opening. 000E
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. 0007
Only use windscreen washer fluids
which are also suitable for use on plas‐
tic sur faces, e.g. MB SummerFit or MB
Wi nterFit. 000E
NO
TEBlocked spr aynozzles caused by
mixing windscreen washer fluids 0007
Do not mix MB SummerFit and MB Win‐
te rFit with other windscreen washer flu‐
ids. Do not use distilled or de-ionised
water asthefill
le ve l sensor may be triggered er roneously.
Re commended windscreen washer fluid:
R Abo vefreezing point: e.g. MB SummerFit
R Below freezing point: e.g. MB WinterFit Fo
rth e cor rect mixing ratio, referto the informa‐
tion on the antif reeze conta iner.
Mix thewa sher fluid with the windscreen washer
fl uid all year round. Ve
hicle data Ve
hicle dimensions The heights speci
fied may vary as a result of the
fo llowing factors:
R tyres
R load
R condition of the suspension
R optional equipment 47 0
Tech nical da ta

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. 480
Display messages and warning/indicator lamps

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 page242). 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. Displ
aymessa ges and warning/indicator lamps 489

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. Display messages and
warning/indicator lamps 503

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 438).
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. Display messages and
warning/indicator lamps 515

Lights
Display messages
Possible causes/consequences and 0050
0050Solutions
0049 Intelligent Light System
inoperative *T
he Intelligent Light Sy stem is faulty. The lighting sy stem continues tofunction properly without the functions of
th e Intelligent Light Sy stem. 0007
Consult a qualified specialist workshop.
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. 526
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
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. 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. Display messages and
warning/indicator lamps 539