display MERCEDES-BENZ C-Class COUPE 2014 CL204 Owner's Manual

Display messages Possible causes/consequences and
0001 Solutions
Front Passenger
Airbag Disabled
See Operator's
Manual The front-passenger air bag is disabled during the journey, even
though:
R
an adult
or
R a person larger than a certain size is occupying the front-
passenger seat
If additional forces are applied to the seat, the system may
interpret the occupant's weight as lowe rthan it actually is.
G WARNING
The front-passenger air bag does not deploy during an accident.
There is an increased risk of injury.
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 Switch the ignition off.
X Have the occupant get out of the vehicle.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction display and check the
following:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF indicator lamp must light up and
remain lit. If the indicator lamp is on, OCS has disabled the front-
passenger air bag (Y page 45).
R the Front Passenger Airbag Enabled See Operator's Manual or
Front Passenger Airbag Disabled See Operator's Manual display messages must not be shown in
the multifunction display.
X Wait for a period of at least 60 seconds until the necessary
system checks have been completed.
X Make sure that the display messages do not appearint he
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
X Visit a qualified specialist workshop immediately. 212
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
Fo
rfurther information about the Occupant Classification System,
see (Y page 45). Front Passenger
Airbag Enabled
See Operator's
Manual The front-passenger air bag is enabled during the journey, even
though:
R
a child, a small adult or an object weighing less than the
system's weigh tthreshold is located on the front-passenger
seat
or
R the front-passenger seat is unoccupied
The system may detect objects or forces applying additional
weight on the seat.
G WARNING
The air bag may deploy unintentionally.
There is an increased risk of injury.
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 Switch the ignition off.
X Open the front-passenger door.
X Remove the child and the child restraint system from the front-
passenger seat.
X Make sure that there are no objects on the seat adding to the
weight.
The system may otherwise detect the additional weight and
interpret the seat occupant's weight as greater than it actually
is.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction display and check the
following:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF indicator lamp must light up and
remain lit. If the indicator lamp is on, OCS (Occupant
Classification System) has disabled the front-passenger air bag
(Y page 45).
R the Front Passenger Airbag Enabled See Operator's Manual or
Front Passenger Airbag Disabled See Operator's Manual display messages must not be shown in
the multifunction display. Display messages
213On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
X
Wait fo raperiod of at least 60 seconds until the necessary
system checks have been completed.
X Make sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System,
see (Y page 45). Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
0001 Solutions
0002
Check Left
Cornering
Light orCheck Right
Cornering Light The left or right-hand cornering light is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 112).
or
X Visit a qualified specialist workshop. 0002
Check Left Low
Beam orCheck Right
Low Beam The left or right-hand low-beam headlamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 112).
or
X Visit a qualified specialist workshop. 0002
Check Rear Left
Turn Signal orCheck
Rear Right Turn
Signal The rear left-hand or rear right-hand turn signal is defective.
X
Visit a qualified specialist workshop. 214
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0002
Check Front Left
Turn Signal orCheck
Front Right Turn
Signal The front left-hand or front right-hand turn signal is defective.
X Visit a qualified specialist workshop. 0002
Check Left Mirror
Turn Signal orCheck
Right Mirror Turn
Signal The turn signal in the left-hand or right-hand exterior mirror is
defective.
X
Visit a qualified specialist workshop. 0002
Check
Center Brake
Lamp The high-mounted brake lamp is faulty.
X
Visit a qualified specialist workshop. 0002
Check Left Tail
and Brake
Lamps orCheck Right
Tail and Brake
Lamps The lef
torright-hand tail lamp/brake lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 112).
or
X Visit a qualified specialist workshop. 0002
Check Left High
Beam or
Check Right High Beam The left or right-hand high beam is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 112).
or
X Visit a qualified specialist workshop. 0002
Check Left Fog
Lamp or
Check Right Fog Lamp The left-hand or right-hand front fog lamp is defective.
X Visit a qualified specialist workshop. 0002
Rear Fog Lamp The rear fog lamp is defective.
X
Visit a qualified specialist workshop. 0002
Check Front Left
Parking
Lamp or
Check Front Right Parking Lamp The front left or front right parking or standing lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 112).
or
X Visit a qualified specialist workshop. Display messages
215On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
0002
Check
Left Reverse
Lamp or
Check Right Reverse Lamp The lef
torright-hand backup lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 113).
or
X Visit a qualified specialist workshop. 0002
Check Front Left
Sidemarker
Lamp or
Check Front Right Sidemarker
Lamp The left or right front side marker lamp is defective.
X
Visit a qualified specialist workshop. 0002
Check Rear Left
Sidemarker
Lamp or
Check Rear Right Sidemarker
Lamp The rear left or right side marker lamp is defective.
X
Visit a qualified specialist workshop. 0002
Check
Left Daytime
Running
Light or
Check Right Daytime
Running Light The left-hand or right-hand daytime running lamp is faulty.
X
Visit a qualified specialist workshop. 0002
Active Headlamps
Inoperative The active light function is defective.
X
Visit a qualified specialist workshop. 0002
Malfunction See
Operator's Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. 0002
Malfunction See
Operator's Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. 0002
Auto
Lamp Function
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop. 216
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0002
Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X Tur nthe light switch to 0003. Adaptive Highbeam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Adaptive Highbeam
Assist Currently
Unavailable See
Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily
inoperative. Possible causes are:
R the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
X Cleant he windshield.
If the system detects that the camera is fully operational again,
the Adaptive Highbeam Assist Now Available again message is displayed.
Adaptive Highbeam Assist is operational again.
Engine
Display messages Possible causes/consequences and
0001 Solutions
000B
Check Coolant
Level See
Operator's Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 272).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. 000A The fan motor is faulty.
X
At coolant temperatures below 248 ‡ (120 †) drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. Display messages
217On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
000A
Coolant Too Hot
Stop Vehicle Turn
Engine Off The coolan
tis too hot.
Aw arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 148).
X Waitu ntil the engine has cooled down.
X Make sure tha tthe air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 218
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0008 The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull ove rand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 148).
X Ope nthe hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. 0010
Check Engine Oil
At Next Refueling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refueling, at the latest
(Y page 271).
X If necessary, add engine oil (Y page 271).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. Display messages
219On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
0010
Check Engine Oil
Level (Add 1 quart) AMG vehicles: the engine oil level is too low.
X
Chec kthe oil level when next refueling, at the latest
(Y page 271).
X If necessary, add engine oil (Y page 271).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 000E
Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 0007 There is only a very small amount of fuel in the fuel tank.
X
Refuel at the nearest gas station without fail. 000E
Gas Cap Loose The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
X Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X Visit a qualified specialist workshop. Driving systems
Display messages Possible causes/consequences and
0001 Solutions
0002
Attention Assist:
Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue
or
alack of concentration on th epart of th edriver. A warning tone
also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest. 0002
Attention Assist
Inoperative ATTENTION ASSIST is inoperative.
X
Visi taqualified specialist workshop. 220
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0001
Off The HOLD function is deactivated. the vehicle is skidding.
Aw
arning tone also sounds.
X Reactivate the HOLD function later (Y page 166). The HOLD function is deactivated. When the brak
epedal is firmly
depressed, an activation condition is not fulfilled.
Aw arning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 166). Radar Sensors
Deactivated See
Operator's Manual The radar sensor system is deactivated.
X
Switch on the radar sensor system (Y page 202).Lane Keeping
Assist Currently
Unavailable See
Operator's
Manual or
Active Lane Keeping
Assist Currently
Unavailable See
Operator's Manual Lane Keeping Assist or Active Lane Keeping Assist is deactivated
and temporarily inoperative. Possible causes are:
R
the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
R there are no lane markings for a longer period.
R the lane markings are worn, dark or covered, e.g .by dir tors now.
Whe nthe causes stated above no longer apply, the display
message disappears.
Lane Keeping Assist or Active Lane Keeping Assist 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 Cleant he windshield. Lane Keeping
Assist
Inoperative or
Activ e Lane Keeping
Assist Inoperative Lane Keeping Assist or Active Lane Keeping Assist is defective.
X
Visit a qualified specialist workshop. Display messages
221On-board computer and displays Z