2015 MERCEDES-BENZ C-CLASS COUPE brake light

X
Position the trailer horizontally behind the
vehicle.
X Couple up the trailer.
X Establish the electrical connection between
the vehicle and the trailer.
X Check that the trailer lighting system is work-
ing.
X Push the combination switch upwards/down-
wards
X Check whether the corresponding turn signal
on the trailer is flashing.
Ac onnected trailer is only detected when the
electrical connection is established correctly
and when the lighting system is working prop- erly. The function of other systems, such as
ESP ®
,P ARKTRONIC, Active Parking Assist,
Active Blind Spot Assist or Lane Keeping
Assist also depends on this. Uncoupling
atrailer G
WARNING
If you uncouple atrailer with an engaged over-
run brake, you could trap your hand between
the vehicle and the trailer drawbar. This poses ar isk of injury.
Do not uncouple atrailer with an engaged
overrun brake. G
WARNING
Vehicles with level control:
If you disconnect the trailer cable, the vehicle is lowered. This can cause you or others to
become trapped between the vehicle body
and tyres, or underneat hthe vehicle. This
poses arisk of injury.
Make sure that no-one is in the immediate
vicinit yofthe wheel arch or underneat hthe
vehicle when disconnectin gthe trailer cable.
! Do not disconnect
atrailer with an engaged
overrun brake. Otherwise, your vehicle could
be damaged by the rebounding of the overrun
brake.
! Remove the installed adapter cable before
folding in the ball coupling. Otherwise, dam-
age may occur to the rear bumper and the
adapter cable. X
Make sure that the transmission is in position
P.
X Apply the electric parking brake.
X Secure the trailer against rolling away.
X Remove the trailer cable and decouple the
trailer. Trailer power supply
! You can connect accessories to the perma-
nent power supply up to amaximum of 240 W.
You cannot charge atrailer battery using the
power supply.
When it leaves the factory, your vehicle's trailer
socket is equipped with apermanen tpower
supply and apower supply that is switched on
via the ignition lock.
The permanen tpower supply is supplied via
trailer socket pin 9.
The power supply that is switched on via the
ignition lock is supplied via trailer socket pin 10.
The trailer's permanen tpower supply is
switched off in the event of low vehicle supply
voltage and after six hours at the latest.
You can find more information about fitting the
trailer electric sataqualified specialist work-
shop.
X To switch the connected power supply on
or off: turn the key to position 2or 0respec-
tively (Y page 145). Failure check for LEDs
If LED lamps are fitted in the trailer, amalfunc-
tion message may appear in the multifunction
display even if there is no fault. The reason for
the error message may be that the curren thas
fallen below the minimum of 50 mA.
To ensure reliable operation of the failure indi-
cator, each LED chain in the trailer lighting must
be guaranteed aminimum curren tof50mA. Trailer with 7-pin connector
General notes Trailer with 7-pin connector:
you can connect
to the 13-pin socket on the ball coupling using
an adapter or, if necessary, an adapter cable. Towing
atrailer
229Driving and parking Z

R
DISTRONI CPLUS(Ypage 184)
R Traffi cSignA ssist (Y page 216)
R Distance warning functio nand autono-
mou sbraking system of COLLISION PRE-
VENTION ASSIST PLU S(Ypage 69)
R PRE-SAFE ®
Brake (Y page 75)
R Blind Spo tAssist (Y page 218 )orActive
Blind Spo tAssist (Y page 221)
R ATTENTION ASSIST (Y page 215)
R Lane Keeping Assist (Y page 219)orActive
Lane Keeping Assist (Y page223)
X Press :to display the ATTENTION ASSIST
assessment. Servic
emenu
Introduction Depending on the equipment fitted in the vehi-
cle, you have the following options in the Ser‐
Ser‐
vice
vice menu:
R Calling up display messages in the message
memory (Y page253)
R Restarting the tyre pressure loss warning sys-
tem (Y page358) or checking the tyre pres-
sure electronically (Y page360)
R Calling up the service due date
(Y page3 25)
R Displaying the AdBlue ®
level and range
(Y page2 44) (BlueTEC vehicles only)
Displayin gthe AdBlue ®
level and range The
AdBlue
AdBlue menu is only available in BlueTEC
vehicles.
X Press òon the steering whee ltoopen the
menu list.
X Press :or9 on the steering whee lto
select the Service
Service menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the AdBlue AdBlue
submenu.
X Press ato confirm yours election.
The range and AdBlue ®
level appear in abar
grap hint he multifunction display.
Observe the informatio nand notes on "Refuel-
ling" (Y page169). Setting
smenu
Introduction Depending on the equipment fitted in the vehi-
cle, you have the following options in the
Set‐ Set‐
tings
tings menu:
R Changing assistance settings (Y page244)
R Changing head-up display settings
(Y page2 46)
R Changing the light settings (Y page247)
R Changing the instrument cluster settings
(Y page2 48)
R Changing the vehicl esettings (Y page248)
R Restoring the factory settings (Y page249)
Assistanc esubmenu Deactivating/activating ESP
®
Observe the "Important safety notes" section in the description of ESP ®
(Y page7 2). G
WARNING
If you deactivate ESP ®
,E SP ®
no longer sta-
bilises the vehicle. There is an increase drisk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the follow-
ing situations:
R when using snow chains
R in deep snow
R on sand or gravel
Deactivating/activating ESP ®
on Mercedes-
AMG vehicles (Y page73).
For further informatio nabout ESP ®
,s ee
(Y page7 1).
X Start the engine.
X Press òon the steering whee ltoopen the
menu list.
X Press :or9 on the steering whee lto
select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Assistance Assistance
submenu.
X Press ato confirm.
X Select ESP
ESPwith : or9. 244
Menus and submenusOn-board computer and displays

X
Press ato confirm.
The curren tselection appears.
X To activate/deactivate: press theabut-
ton again.
If the å warning lamp in the instrument
cluster lights up when the vehicle is ready to
drive, ESP ®
is deactivated.
If the ÷ andå warning lamps light up
continuously, ESP ®
is not availabl edue to amal-
function.
Observe the information on warning lamps
(Y page 287).
Observe the information on display messages
(Y page 254).
Traffic Sign Assist
You can activat eordeactivate the warning func-
tion of Traffic Sign Assist in the Traffic TrafficSign
Sign
Assist
Assist menu. When the message function is
activated, detected traffic signs and information appear in the multifunction display for five sec-
onds.
X Press òon the steerin gwheel to open the
menu list.
X Press the :or9 button on the steering
wheel to select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Assistance Assistance
submenu.
X Press ato confirm.
X Select Traffic Sign Assist Traffic Sign Assist with: or
9.
X Press ato confirm.
The curren tselection appears.
X Activate or deactivat
ethe warning func-
tion: press aagain.
For further information about Traffic Sign Assist, see (Y page 216).
Activating/deactivating COLLISION PRE-
VENTION ASSIST PLUS
X Press òon the steerin gwheel to open the
menu list.
X Press :or9 on the steerin gwheel to
select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Assistance Assistance
submenu. X
Press ato confirm.
X Select Collision Prevention Collision Prevention with9
or :.
X Press ato confirm.
The curren tselection appears.
X To activate/deactivate: press theabut-
ton again.
When COLLISION PREVENTION ASSIST PLUS
is deactivated, the æsymbol appears in
the multifunction display in the Assistance Assistance
graphic
graphic menu.
For further information about COLLISION PRE-
VENTION ASSIST PLUS, see (Y page 69).
Activating/deactivating PRE-SAFE ®
Brake PRE ‑SAFE ®
Brake is only availabl efor vehicles
with the Drivin gAssistance package.
X Press òon the steerin gwheel to open the
menu list.
X Press :or9 on the steerin gwheel to
select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Assistance Assistance
submenu.
X Press ato confirm.
X Select PRE-SAFE Brake
PRE-SAFE Brake with: or9.
X Press ato confirm.
The curren tselection appears.
X To activate/deactivate: press theabut-
ton again.
When PRE-SAFE ®
Brake is deactivated, the
æ symbol appears in the multifunction dis-
play in the Assistance graphic Assistance graphic menu.
Further information on PRE‑ SAFE®
Brake
(Y page 75).
Activating/deactivating Blind Spot Assist
X Press òon the steerin gwheel to open the
menu list.
X Press :or9 on the steerin gwheel to
select the Settings Settings menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Assistance Assistance
submenu.
X Press ato confirm.
X Select Blind Spot Assist Blind Spot Assist with: or
9. Menus and submenus
245On-board computer and displays Z

Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual ABS (Anti-lock Braking System) and ESP
®
(Electronic Stability Pro-
gram) are temporarily unavailable.
Other driving and driving safety systems may also be faulty.
In addition, the ÷and! warning lamps light up in the instru-
ment cluster.
For example, the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance may increase in an emergency braking situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
Carefull ydrive on asuitable stretch of road, making slight steering
movement sataspeed above 20 km/h.
If the display message disappears, the functions mentioned above
are available again.
If the multifunction display still shows the display message: X Drive on carefully.
X Consult aqualified specialist workshop immediately. !÷
inoperative inoperative See SeeOwn‐
Own‐
er's Manual
er's Manual ABS and ESP
®
are faulty.
Other driving and driving safety systems may also be faulty.
In addition, the J,÷and! warning lamps may light up in
the instrumen tcluster.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance may increase in an emergency braking situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Consult aqualified specialist workshop immediately. 254
Display messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions ÷
inoperative inoperative
See
SeeOwn‐
Own‐
er' sM anual
er' sM anual ESP
®
is faulty.
Other drivin gand drivin gsafet ysystems may also be faulty.
The ÷ warning lamp also lights up in th einstrumen tcluster.
G WARNING
The brak esystem continues to function normally, but without the
function slisted above.
The braking distanc emay thus increas einanemergenc ybraking sit-
uation.
If ESP ®
is no toperational, ESP ®
is unable to stabilis ethe vehicle.
There is an increased danger of skiddin gand ris kofana ccident.
X Drive on carefully.
X Consult aqualified specialist workshop immediately. ÷
currently unavaila‐ currently unavaila‐
ble ble
See
SeeOwner's
Owner's Man‐
Man‐
ual
ual ESP
®
is temporarily unavailable.
Other drivin gand drivin gsafet ysystems may also be faulty.
The ÷ warning lamp also lights up in th einstrumen tcluster.
The self-diagnosis function ,for example, may no tbecomplete.
G WARNING
The brak esystem continues to function normally, but without the
function slisted above. The wheels could therefor eloc kify ou brake
hard, for example.
The braking distanc emay thus increas einanemergenc ybraking sit-
uation.
If ESP ®
is no toperational, ESP ®
is unable to stabilis ethe vehicle.
There is an increased danger of skiddin gand ris kofana ccident.
X Carefully drive on asuitable stretch of road, making slight steering
movement sataspeed abov e20km/h.
If th edisplay message disappears, th efunction smentioned above
are available again.
If th emultifunction display still shows th edisplay message:
X Drive on carefully.
X Consult aqualified specialist workshop immediately. Display
messages
255On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions T!
÷
inoperative inoperative See
SeeOwn‐
Own‐
er' sM anual
er' sM anual EB
D( electronic brak eforce distribution), AB Sand ESP ®
are faulty.
Other drivin gand drivin gsafet ysystems may also be faulty.
In addition ,the ÷ and! warning lamp sligh tupint heinstru-
men tcluste rand aw arning tone sounds.
G WARNING
The brak esystem continues to function normally, but without the
function slisted above. The fron tand rear wheels could therefor elock,
for example, if you brak ehard.
The steerabilit yand braking characteristics may be severely affected.
The braking distanc emay increas einanemergenc ybraking situation.
If ESP ®
is no toperational, ESP ®
is unable to stabilis ethe vehicle.
There is an increased danger of skiddin gand ris kofana ccident.
X Drive on carefully.
X Consult aqualified specialist workshop immediately. J
Brake immediately Brake immediately Vehicles wit
hmanual transmission :amalfunction has occurred while
th eH OLDf unction was activated.
At onem ay also soun datregular intervals. If you attemp ttolockt he
vehicle, th etoneb ecome slouder.
You canno tstart th eengine.
X Payin gattention to th etraffic situation ,immediately depress the
brak epedal firmly and hold until th edisplay message disappears.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
You can restar tthe engine. !
Tur
nont he igni‐
Tur nont he igni‐
tion tion to
torelease
release the
the
parkin gbrake
parkin gbrake The red
!indicator lamp lights up.
You attempte dtorelease th eelectric parking brak ewhile th eignition
was switched off.
X Switc hthe ignition on. !
Releas
eparking
Releas eparking
brake brake The red
!indicator lamp flashes and awarning tone sounds. A
condition for automatic release of th eelectric parking brak eisnot
fulfilled (Y page 174).
You are drivin gwitht he electric parking brak eapplied.
X Releas ethe electric parking brak emanually. The red
!indicator lamp flashes and awarning tone sounds.
You are making an emergenc ystopu singthe electric parking brake
(Y page 174). 256
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions !
Parkin
gbrake See
Parkin gbrake See
Owner' sManual
Owner' sManual The yellow
!warning lamp lights up.
The electric parking brak eismalfunctioning.
To apply:
X Switc hthe ignition off.
X Press th eelectric parking brak elever for at least te nseconds.
X Vehicles wit hmanua ltra nsmission: engage first gear.
X Vehicles wit hautomatic transmission: shift thetransmission to
position P.
X Consult aqualified specialist workshop. The yellow
!warning lamp and th ered ! indicator lamp are lit.
The electric parking brak eismalfunctioning.
To release:
X Switc hthe ignition off and then on again.
X Releas ethe electric parking brak emanually.
or X Releas ethe electric parking brak eautomatically (Y page 174).
If th eelectric parking brak estill canno tbereleased:
X Do no tdrive on.
X Consult aqualified specialist workshop. The red
!indicator lamp flashes and th eyellow !warning lamp
is lit.
The electric parking brak eismalfunctioning.
To release:
X Switc hthe ignition off and then on again.
X Releas ethe electric parking brak emanually.
To apply: X Switc hthe ignition off and then on again.
X Apply th eelectric parking brak emanually.
If th ered ! indicator lamp continues to flash:
X Do no tdrive on.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 362).
X Vehicles wit hmanua ltra nsmission: engage first gear.
X Vehicles wit hautomatic transmission: shift thetransmission to
position P.
X Turn th efront wheels toward sthe kerb.
X Consult aqualified specialist workshop. Display
messages
257On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions The yellow
!warning lamp lights up. The red !indicator lamp
flashes for about te nseconds after th eelectric parking brak ehas been
applie dorreleased. It then goe sout or remain slit.
The electric parking brak eismalfunctioning.
X Switc hthe ignition off and then on again.
X Apply th eelectric parking brake.
If it is no tpossibl etoapply th eelectric parking brake:
X Vehicles wit hmanua ltra nsmission: engage first gear.
X Vehicles wit hautomatic transmission: shift thetransmission to
position P.
X Consult aqualified specialist workshop.
If it is no tpossibl etorelease th eelectric parking brak emanually:
X Releas ethe electric parking brak eautomatically (Y page 174).
If th eelectric parking brak estill canno tbereleased:
X Consult aqualified specialist workshop. The yellow
!warning lamp lights up. If you manually apply or
release th eelectric parking brake, th ered ! indicator lamp
flashes.
The electric parking brak eismalfunctioning .Itisnotpossibl etoapply
th ee lectric parking brak emanually.
X Vehicles wit hmanua ltra nsmission: switch off th eignition.
The electric parking brak eisappliedautomatically.
X Vehicles wit hautomatic transmission: shift thetransmission to
position P,astheelectric parking brak eisnotapplie dautomati-
cally.
X Consult aqualified specialist workshop.
If it is no tpossibl etorelease th eelectric parking brak emanually:
X Releas ethe electric parking brak eautomatically (Y page 174).
If you do no twish th eelectric parking brak etobeapplied, leav ethe
ignition switched on ,e.g.w hen washing th evehicl einana utomatic
car wash or when having th evehicl etow ed. Exception :when having
th ev ehicl etow ed wit hthe rear axl eraised. 258
Display
messagesOn-boardcomputer an ddisplays