2015 MERCEDES-BENZ C-CLASS COUPE lights

Display messages
Possible causes/consequences and
M
MSolutions 6
Front lef
tmalfunc‐
Front lef tmalfunc‐
tio nC onsul twork‐
tio nC onsul twork‐
shop shop orFront right
Front right
malfunction
malfunction Consult
Consult
workshop
workshop The restrain
tsystem has malfunctioned at th efront on th eleftorr ight.
The 6 warning lamp also lights up in th einstrumen tcluster.
G WARNING
The airbags or belt tensioners may either be triggered unintentionally or, in th eevent of an accident, may no tbetriggered.
This poses an increased ris kofinjury.
X Consult aqualified specialist workshop immediately. 6
Rea
rl eftm alfunc‐
Rea rl eftm alfunc‐
tio nC onsul twork‐
tio nC onsul twork‐
shop shop orRea rr ight
Rea rr ight
malfunction
malfunction Consult
Consult
workshop
workshop The rear left-han
dorright-hand restrain tsystem has malfunctioned.
The 6 warning lamp also lights up in th einstrumen tcluster.
G WARNING
The airbags or belt tensioners may either be triggered unintentionally or, in th eevent of an accident, may no tbetriggered.
This poses an increased ris kofinjury.
X Consult aqualified specialist workshop immediately. 6
Lef
tw indowbag mal‐
Lef tw indowbag mal‐
function Consult function Consult
workshop workshop orRight
Right
windowbag malfunc‐
windowbag malfunc‐
tio nC onsul twork‐
tio nC onsul twork‐
shop shop The lef
torright windowbag is malfunctioning.
The 6 warning lamp also lights up in th einstrumen tcluster.
G WARNING
The lef torright windowbag may either be triggered unintentionally or,
in th eevent of an accident, may no tbetriggered.
This poses an increased ris kofinjury.
X Consult aqualified specialist workshop immediately. 262
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Further information on th
eautomatic front-passenger fron tairbag
deactivation feature (Y page 47).Lights
Display messages
Possible causes/consequences and
M
MSolutions b
Lef
td ipped beam
Lef td ipped beam
(Example) The correspondin
gbulb is faulty.
X Consult aqualified specialist workshop.
or X Chec kwhether you are permitte dtoreplace th ebulb yourself
(Y page 123).
i LE
Dl igh tbulbs :the display message for th ecorre spondin glamp
only appear swhen all th eLEDsint helamp hav efailed. b
Active Active
Light
LightSystem
System
inoperative
inoperative The active ligh
tfunction is faulty.
X Consult aqualified specialist workshop. b
Intell
.Light Sys‐
Intell .Light Sys‐
tem inoperative tem inoperative The Intelligent Light Syste
misfaulty. The lighting system continues to
function properly without th efunction softheIntelligent Light System.
X Consult aqualified specialist workshop. b
Malfunction Malfunction
See
SeeOwn‐
Own‐
er' sM anual
er' sM anual The exterio
rlighting is faulty.
X Consult aqualified specialist workshop. Vehicles wit
htrailer to whitch :af usem ay hav eblown.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Chec kthe fuses (Y page 350).
X If necessary, replace th eblown fuse. Observ ethe warning note sas
you do so.
If th edisplay message continues to be displayed:
X Consult aqualified specialist workshop. b
AUT
Ol ights inoper‐
AUT Ol ights inoper‐
ative ative The ligh
tsensor is faulty.
X Consult aqualified specialist workshop. b
Switch off lights Switch off lights You are leaving th
evehicl eand th elights are switched on .Awarning
tone also sounds.
X Turn th eligh tswitch to the Ãposition. Display
messages
265On-boardcomputer an ddisplays Z

Warning and indicator lamps in the instrument cluster
General notes
Some systems carry out aself-diagnosis when the ignition is switched on. Severa lwarning and
indicator lamps can thereby temporarily light up or flash. This behaviou risnon-critical. These
warning and indicator lamps only indicate amalfunction if they light up or flas hafter the engine is
started or during ajourney. Safety
Seat belts Warning/
indicator
lamp
N N
Signal type
Possibl ecauses/consequencesa ndM
MSolutions ü
N
Only for certain countries :the red sea tbeltw arning lam plights up for 6seconds
after the engine starts.
The sea tbeltw arning lam preminds the drive rand front passenger to fasten their
sea tbelts.
X Fasten you rseatb elt( Y pag e43). ü
N
Only for certain countries :the red sea tbeltw arning lam plights up after the
engine starts. In addition, awarning tone sound sfor up to 6seconds.
The driver's sea tbeltisn ot fastened.
X Fasten you rseatb elt( Y pag e43).
The warning tone ceases. ü
N
The red sea tbeltw arning lam plights up after the engine starts, as soon as the
driver's or the front-passenger door is closed.
The drive rorpassenger has not fastened their sea tbelt.
X Fasten you rseatb elt( Ypag e43).
The warning lam pgoes out.
There are objects on the front-passenger seat.
X Remove the objects from the front-passenger sea tand stow them in asecure
place.
The warning lam pgoes out. ü
N
The red sea tbeltw arning lam pflashes and an intermittent audible warning
sounds.
The drive rorpassenger has not fastened their sea tbelt. At the same time, you are
driving faster than 25 km/h or have briefly drive nfaster than 25 km/h.
X Fasten you rseatb elt( Y pag e43).
The warning lam pgoes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. At the same time, you are driving
faster than 25 km/h or have briefly drive nfaster than 25 km/h.
X Remove the objects from the front-passenger sea tand stow them in asecure
place.
The warning lam pgoes out and the intermittent warning tone ceases. Warning and indicator lamps in the instrument cluster
285On-board computer and displays Z

Safety systems
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions J
N
The yellow brake system warning lamp lights up while the engine is running or
the ECO start/stop function is activated.
G WARNING
The brake system is malfunctioning and the braking characteristics may be affec- ted.
There is arisk of an accident.
X If the multifunction display shows adisplay message, please observe this.
X Drive on carefully.
X Consult aqualified specialist workshop immediately. J
N
The red brake system warning lamp is lit while the engine is running.
Aw arning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics may be
affected.
There is arisk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances.
X Safeguard the vehicle against rolling away (Y page 172).
X Consult aqualified specialist workshop.
X Observe the additional display messages in the multifunction display. J
N
The red brake system warning lamp is lit while the engine is running.
Aw arning tone also sounds.
There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
Braking efficiency may be impaired.
There is arisk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances.
X Safeguard the vehicle against rolling away (Y page 172).
X Do not top up the brake fluid. Topping up will not rectify the fault.
X Consult aqualified specialist workshop.
X Observe the additional display messages in the multifunction display. 286
Warning and indicator lampsint
he instrument clusterOn-board computer and displays

Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
M Solutions !
N
The red indicator lamp for the electric parking brake flashes or is lit and/or the
yellow warning lamp for the electric parking brake is lit.
X Observe the additiona ldisplay messages in the multifunction display. 6
N
The red restraint system warning lamp is lit while the engine is running.
The restraint system is faulty.
G WARNING
The airbags or beltt ensioners may either be triggere dunintentionally or, in the
event of an accident, may not be triggered.
This poses an increased risk of injury.
X Observe the additiona ldisplay messages in the multifunction display.
X Drive on carefully.
X Contact aqualified specialist worksho pimmediatel yand have the restraint sys-
tem checked.
For further information about the restraint system, see (Y page39). Engine
Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
M Solutions ;
N
The yellow engine diagnostics warning lamp lights up while the engine is run-
ning.
There may be afault, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignitio nsystem (for vehicles with petrol engines)
R in the fuel system
The emission limi tvalues may be exceede dand the engine may be running in
emergency mode.
X Consult aqualified specialist worksho pimmediately.
Vehicles with adiesel engine: the fuel tank has been run dry (Y page169).
X Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emergency running
mode is cancelled. The vehicl eneed not be checked. 8
N
The yellow reserve fuel warning lamp is on while the engine is running.
The fuel leve lhas dropped into the reserve range.
Operation of the auxiliary heating is deactivated if the fuel leve ldrops into the
reserve range.
X Refuel at the neares tfilling station. 290
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
MSolutions ?
N
The red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the scale.
The temperature sensor for the coolant temperature gauge is faulty.
The coolant temperature is no longer being monitored .There is arisk of engine
damage if the coolant temperature is too high.
X Stop the vehicl eimmediately, paying attention to road and traffic conditions,
and switch off the engine. Do not continue driving under any circumstances.
X Safeguard the vehicl eagainst rolling away( Ypage1 72).
X Consult aqualified specialist workshop. Warning and indicator lamps in the instrument cluster
291On-board computer and displays Z

Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
MSolutions X
Make sure that the air supply to the engine radiator is not blocked ,e.g. by frozen
slush.
X If the coolant temperature is below 120 †, you can continue driving to the
neares tqualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-start traffic. Driving systems
Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
MSolutions ·
N
The red distance warning lamp lights up while the vehicl eisinmotion.
The distance to the vehicl einfront is too smal lfor the spee dselected.
X Increase the distance. ·
N
The red distance warning lamp lights up while the vehicl eisinmotion.Awarning
tone alsos ounds.
You are approaching avehicle, apedestrian or astationary obstacl einyourline of
travel at too high aspeed.
X Be prepared to brake immediately.
X Pay carefu lattention to the traffic situation. You may have to brake or take
evasive action.
Further information on PRE ‑SAFE®
Brake (Y page75).
For further information on the distance warning function of COLLISION PREVEN-
TION ASSIST PLUS, see (Y page69). Warning and indicator lamps in the instrument cluster
293On-board computer and displays Z

General notes
The multimedia system section in this manual
describes the basi cprinciples for operation.
More information can be found in the Digital
Owner's Manual. Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
whil edriving willd istract you from traffic con-
ditions. You could then lose control of the
vehicle .There is arisk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure aboutt he
surrounding conditions, pullo ver toasafe
locatio nand make entries only whilet he vehi-
cle is stationary.
You must observe the legalr equirements for the
country in which you are currently driving when operating the multimedia system.
The multimedia system calculates the route to
the destination withou ttaking the following into
account, for example:
R traffic lights
R stop and give way signs
R parking or stopping restrictions
R road narrowing
R other road and traffic rulesa nd regulations
The multimedia system may give incorrect nav-
igation recommendations if the actual street/
traffic situation does not correspond with the
digital map's data.
For example:
R ad iverted route
R the road layout or the direction of aone-way
street has been changed
For this reason, you must alwayso bserve road
and traffic rulesa nd regulations during your
journey. Roada nd traffic rulesa nd regulations
alwaysh ave priority over multimedia system
driving recommendations. Function restrictions
For safety reasons, some functions are restric-
ted or unavailable whilet he vehicle is in motion.
You willn otice this, for example, because either
you willn ot be abletos elect certain menu items
or am essag ewilla ppear to this effect. Operating system
Overview
General notes !
Do not use the space in front of the display
for storage. Objects placed here could dam-
age the display or impair its function. Avoid
any direct contact with the display surface.
Pressure on the display surface may resul tin
impairments to the display,w hich could be
irreversible.
Wearing polarised sunglasses may impair your
ability to read the display.
The display has an automatic temperature-con- trolled switch-off feature .The brightness is
automaticall yreduced if the temperature is too
high. If necessary ,the display may temporarily
switch off completely.
Cleaning instructions !
Do not touch the display.T
he display has a
very sensitive high-gloss surface; there is a
risk of scratching. If you have to clean the
screen, however, use amild cleaning agent
and asoft, lint-free cloth.
The display must be switched off and have
cooled down before you start cleaning. Do not
apply pressure to the display surface when
cleaning it, as this could cause irreversible dam- age to the display.
Switching the multimedia system
on/off X
Press the ubutton on the centre console
to the right of the controller.
For Mercedes-AMG vehicle swith selectable
AMG Performance exhaust system: press the
thumbwheel to the right of the controller. 296
Operating systemMultimedia system