2014 MERCEDES-BENZ C-Class COUPE warning light

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 24).Important safety notes
G
WARNING
If you operate information systems and
communication equipment integrated in the
vehicle while driving, you will be distracted
from traffic conditions. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate the equipment when the traffic
situatio npermits .Ifyou are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the
equipment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or
malfunctioned, you may not recognize
function restrictions in systems relevant to
safety. The operating safety of your vehicle
may be impaired. There is a risk of an
accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop
immediately.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the multifunction display
.You should therefore
make sure your vehicle is operating safely at
all times. Otherwise, a vehicle that is not
operating safely may cause an accident.
For an overview, see the instrument panel
illustration (Y page 29). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle
interior can be adjusted using the brightness
control knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(Y page 29).
X Turn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to 0003,0014or
000B, the brightness is dependent upon
the brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated. Coolant temperature display
G
WARNING
Opening the hood when the engine is
overheated or when there is a fire in the
engine compartment could expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
The coolant temperature gauge is in the
instrument cluster on the left-hand side. 188
Displays and operationOn-board computer and displays

Assistance menu
Introduction In the
DriveAssist menu, you have the
following options:
R Displaying the assistance graphic
(Y page 197)
R Activating/deactivating
ESP ®
(Y page 197)
R Activating/deactivating PRE-SAFE ®
Brake
(Y page 198)
R Activating/deactivating ATTENTION
ASSIST (Y page 198)
R Activating/deactivating Blind Spot Assist
or Active Blind Spot Assist (Y page 198)
R Activating/deactivating Lane Keeping
Assis torA ctive Lane Keeping Assist
(Y page 198)
Displaying the assistance graphic X
Press the 0002or0005 button on the
steering wheel to select the DriveAssistmenu.
X Press 0003or0004 to select Assistance Graphic .
X Press the 000Bbutton.
The multifunction display shows the
DISTRONIC PLUS distance display in the
assistance graphi c(Ypage 163).
The assistance graphic can display the status
of and information from other driving systems
or driving safety systems. The assistance graphic shows:
R
the 0002 symbol when ATTENTION ASSIST
(Y page 176) is deactivated.
R the lane markings as bright lines when Lane
Keeping Assist (Y page 178)or Active Lane
Keeping Assist (Y page 183) is activated.
R the 0001 symbol when PRE-SAFE ®
Brake
(Y page 67) is deactivated.
Deactivating/activating ESP ® i
Observe the "Important safety notes"
section in the description of ESP
(Y page 64). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP ®
in the situations
described in the following.
It may be best to deactivate ESP ®
in the
following situations:
R when using snow chains
R in deep snow
R on sand or gravel
Activating/deactivating ESP ®
on AMG
vehicles (Y page 66).
For further information about ESP ®
, see
(Y page 64).
X Start the engine.
X Press the 0002or0005 button on the
steering wheel to select the DriveAssist menu.
X Press the 0003or0004 button to select
ESP .
X Press the 000Bbutton.
X To deactivate: press000Bagain.
The 0015 warning lamp in the instrument
cluster lights up.
X To activate: press000Bagain.
The 0015 warning lamp in the instrument
cluster goes out. Menus and submenus
197On-board computer and displays Z

ESP
®
is deactivated if the 0015warning lamp
in the instrument cluste rlights up
continuously when the engine is running.
If the 000D warning lamp and the 0015
warning lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 236).
Observe the information on display messages
(Y page 207).
Activating/deactivating PRE-SAFE ®
Brake PRE-SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press the 0002or0005 button on the
steering wheel to selec tthe DriveAssist menu.
X Press the 0003or0004 button to select
PRE-SAFE Brake .
X Press the 000Bbutton.
The current selection is displayed.
X To activate/deactivate: press the000B
button again.
When PRE-SAFE ®
Brake is deactivated, the
assistance graphic shows the 0001symbol
in the multifunction display.
If the PRE-SAFE Brake: Sensors Deactivated message appears, the radar
sensor system is deactivated.
X Switch on the radar sensor system
(Y page 202).
For more information on PRE-SAFE ®
Brake,
see (Y page 67).
Activating/deactivating ATTENTION
ASSIST X
Press the 0002or0005 button on the
steering wheel to select the DriveAssistmenu.
X Press the 0003or0004 button to select
Attention Assist .X
Press the 000Bbutton.
The current selection is displayed.
X To activate/deactivate: press the000B
button again.
When ATTENTION ASSIST is deactivated,
the 0002 symbol appears in the
multifunction display in the assistance
graphics display.
For further information about ATTENTION
ASSIST, see (Y page 176).
Activating/deactivating Blind Spot
Assist X
Press the 0002or0005 button on the
steering wheel to select the DriveAssist menu.
X Press the 0003or0004 button to select
Blind Spot Assist .
X Press the 000Bbutton.
The current selection is displayed.
X To activate/deactivate: press the000B
button again.
If the Blind Spot Assist Sensors Deactivated or
Act. Blind Spot Asst. Sensors Deactivated message appears,
the radar sensor system is deactivated.
X Switch on the radar sensor system
(Y page 202).
For further information about Blind Spot
Assist, see (Y page 177).
For further information about Active Blind
Spot Assist, see (Y page 180).
Activating/deactivating Lane Keeping
Assist X
Press the 0002or0005 button on the
steering wheel to select the DriveAssist menu.
X Press the 0003or0004 button to select
Lane Keep. Asst. X
Press the 000Bbutton.
The current selection is displayed.
X Press 000Bto confirm. 198
Menus and submenusOn-board computer and displays

X
Press the 0004or0003 button to set Off ,
Standard or
Adaptive .
X Press the 000Bbutton to save the setting.
When Lane Keeping Assist or Active Lane
Keeping Assist is activated, the
multifunction display shows the lane
markings as bright lines in the assistance
graphic.
For further information about Lane Keeping
Assist, see (Y page 178).
For further information about Active Lane
Keeping Assist, see (Y page 183).Maintenance menu
In the
Service menu, you have the following
options:
R Calling up display messages
(Y page 206)
R Restarting the tire pressure loss warning
system (Canada only) (Y page 303)
R Checking the tire pressure electronically
(Y page 304)
R Calling up the service due date
(Y page 268) Settings menu
Introduction In the
Settings menu, you have the following
options:
R Changing the instrument cluster settings
(Y page 199)
R Changing the light settings (Y page 200)
R Changing the vehicle settings
(Y page 201)
R Changing the convenience settings
(Y page 202)
R Restoring the factory settings
(Y page 203)
Instrument cluster Selecting the unit of measurement for
distance
The
Display Unit Speed-/Odometer: function allows you to choose whether
certain displays appear in kilometers or miles
in the multifunction display.
You can determine whether the multifunction
display shows some messages in miles or
kilometers.
X
Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Instr. Cluster submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Display Unit Speed-/Odometer: function.
You will see the selected setting:
km or
miles .
X Press the 000Bbutton to save the setting.
The selected unit of measurement for
distance applies to:
R the digital speedometer in the Trip menu
R the odometer and the trip odometer
R the trip computer
R current consumption and the range
R the navigation instruction sintheNavi menu
R cruise control Menus and submenus
199On-board computer and displays Z

Safety systems
Display messages Possible causes/consequences and
0001 Solutions
0018000D
Currently
Unavailable See
Operator's Manual ABS (Anti-lock Braking System), ESP
®
(Electronic Stability
Program), BAS (Brake Assist), PRE-SAFE ®
,t he HOLD function and
hill start assist are temporarily unavailable.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 000D,0015and0018 warning lamps light up in
the instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes are:
R self-diagnosis is not yet complete.
R 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 in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 000D
Inoperative See
Operator's Manual ESP
®
,B AS, PRE-SAFE ®
, the HOLD functio nand hill start assist are
unavailable due to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 000Dand0015 warning lamps light up in the
instrument cluster.
The self-diagnosis functio nmight not be complete, for example.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. Display messages
207On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
The braking distance in an emergency braking situation can thus
increase.
If ESP
®
is no toperational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 00060018
000D
Inoperative See
Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS, PRE-
SAFE ®
, the HOLD function and hill start assist are unavailable due
to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 000D,0015and0018 warning lamps light up in
the instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The fron tand rea rwheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 0004(USA
only)0005(Canada
only)
Please Release
Parking Brake You are driving with the parking brake applied.
Awarning tone also
sounds.
X Release the parking brake. 208
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
000B(USA
only)
0005(Canada
only)
Brake Immediately A malfunction has occurred while the HOLD function or
DISTRONIC PLUS is active.
At
one may also sound at regular intervals. If you attempt to lock
the vehicle, the tone becomes louder.
You cannot start the engine.
X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message
disappears.
X Use the folding wheel chock (Y page 321) from the vehicle tool
kit to secure the vehicle against rolling away.
You can restart the engine. 000B(USA
only)0005(Canada
only)
Check Brake Fluid Level There is not enough brake fluid in the brake fluid reservoir.
In addition, the
000B(USA only)/0005 (Canada only) warning
lamp lights up in the instrument cluster and a warning tone
sounds.
G WARNING
The braking effect may be impaired.
There is a risk 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 Secure the vehicle against rolling away (Y page 148).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 0006
Check Brake Pad
Wear The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. 0008
Inoperative One or more main features of the mbrace system are
malfunctioning.
X
Have the mbrace system checked immediately at a qualified
specialist workshop. PRE-SAFE
Inoperative See
Operator's Manual Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. air bags, remain available.
X Visit a qualified specialist workshop immediately. Display messages
209On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
PRE-SAFE
Functions
Currently Limited
See Operator's
Manual PRE-SAFE
®
Brake is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiato rgrill and the bumper are dirty.
R the rada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R AMG vehicles: ESP ®
is deactivated.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display
message disappears.
PRE-SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 148).
X Clean the sensors in the radiator grill and the bumper
(Y page 277).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 66). PRE-SAFE
Functions Limited
See Operator's
Manual PRE-SAFE
®
Brake is inoperative due to a malfunction. BAS PLUS
or the distance warning signal may also have failed.
X Visit a qualified specialist workshop. 001E
SRS Malfunction
Service Required There is a malfunction in the SRS (Supplemental Restraint
System). The
001Ewarning lamp also lights up in the instrument
cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about SRS, see (Y page 39).210
Display messagesOn-board computer and displays