display MERCEDES-BENZ CL-Class 2014 C217 Owner's Manual

Display messages Possible causes/consequences and
M Solutions
PRE-SAFE
Function Currently
Limited See
Operator's Manual PRE-SAFE
®
Brake is temporarily inoperative. Possible causes are:
R the DISTRONIC PLUS cover in the radiator trim is dirty
R function is impaired due to heavy rain or snow.
R the sensors in the bumpers 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 the system is outside the operating temperature range.
R the on-board voltage is too low.
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 289).
X Clean the DISTRONIC PLUS cover in the radiator trim
(Y page 431).
X Clean the bumpers (Y page 431).
X Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
PRE-SAFE ®
Brake is operational again. PRE-SAFE
Function Limited
See Operator's
Manual PRE-SAFE
®
Brak eisd efective. BAS PLUS or the distanc ewarning
signal may also have failed.
X Visi taqualified specialist workshop. 6
SRS Malfunction
Service Required There is a malfunction in the SRS (Supplemental Restraint
System). The
6warning 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. 362
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
6
Front Left SRS
Malfunction
Service Required
or
Front Right SRS Malfunction
Service Required SRS has malfunctioned at the front on the left or right. The
6
warning lamp also lights up in the instrumen tcluster.
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. 6
Rear Left SRS
Malfunction
Service Required
or
Rear Right SRS Malfunction
Service Required SRS has malfunctione
dat the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster.
G WARNING
The ai rbags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased ris kofinjury.
X Visi taqualified specialist workshop. 6
Left Side Curtain
Airbag Malfunction
Service Required
or
Right Side Curtain Airbag
Malfunction
Service Required There is a malfunction in the left-hand or right-hand window
curtain air bag.
The 6 warning lamp also lights up in the instrument cluster.
G WARNING
The left or right window curtain air bag 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. Display messages
363On-board computer and displays Z

Display messages Possible causes/consequences and
M 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.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the parking brake.
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.
Observe the PASSENGER AIR BAG OFF indicator lamp
(Y page 50) 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 (Y page 50) has
deactivated the front-passenger air bag.
R The Front Passenger Airbag Enabled See Oper. Manual or
Front Passenger Airbag Disabled See Oper.
Manual display messages must not appearint
he 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. 364
Display messagesOn-board computer and displays

G
WARNING
If the 42 indicator lamp remains lit with an adult occupant on the front-passenger
seat even after performing the above corrective steps, do not have any passenger use the front-
passenger seat until the system has been repaired. Display messages
365On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
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 objec tweighing less than the
system's weight threshold is located on the front-passenger
seat
or
R the front-passenger seat is unoccupied
The system may detec tobjects or forces applying additional
weight on the seat.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the parking brake.
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 If necessary, secure the child in a child restraint system on a
suitable rear seat.
X Make sure that there are no objects on the seat adding to the
weight.
The system may otherwise detec tthe 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.
Observe the PASSENGER AIR BAG OFF indicator lamp
(Y page 50) 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 (Y page 50) has
deactivated the front-passenger air bag.
R The Front Passenger Airbag Enabled See Operator's Manual or
Front Passenger Airbag Disabled See Operator's Manual display messages must not appearint
he
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 366
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are no
tfulfilled, the system is no toperating
correctly.
X Visit a qualified specialist workshop immediately. G
WARNING
If the 42 indicator lamp remains off even after performing the above corrective
steps, do not have any children twelve years old and under and other small individuals use the
front-passenger seat until the system has been repaired. Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
M Solutions
b
Check Left
Cornering
Light or
Check Right Cornering
Light The left or right-hand cornering light is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Left Low
Beam or
Check Right
Low Beam The left or right-hand low-beam headlamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Rear Left
Turn
Signal or
Check Rear Right Turn
Signal The rear left-hand or rear right-hand turn signal is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. Display messages
367On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
b
Check Front Left
Turn
Signal or
Check Front Right Turn
Signal The front left-hand or front right-hand turn signal is defective.
X
Chec kwhether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Left Mirror
Turn
Signal or
Check Right Mirror Turn
Signal The turn signal in the left-hand or right-hand exterior mirror is
defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check
Center Brake
Lamp The high-mounted brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Left Tail
and Brake
Lamp or
Check Right
Tail and Brake Lamp The left or right-hand tail lamp/brake lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
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 change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check
Left License
Plate Lamp or
Check Right License
Plate Lamp The left or right-hand license plate lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. 368
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
b
Check Left Fog
Lamp or
Check Right
Fog Lamp The left-hand or right-hand fron
tfog lamp is defective.
X Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Rear Left
Fog Lamp or
Check Rear Right Fog Lamp The left-hand or right-hand rear fog lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
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 change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check
Left Reverse
Lamp or
Check Right
Reverse Lamp The left or right-hand backup lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Front Left
Sidemarker
Lamp or
Check Front
Right Sidemarker
Lamp The left or right front side marker lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Check Rear Left
Sidemarker
Lamp or
Check Rear Right Sidemarker
Lamp The rear left or right side marker lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. Display messages
369On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
b
Check
Left Daytime
Running
Light or
Check Right Daytime
Running Light The lef
torright-hand daytime running lamp is defective.
X Check whether you are permitted to change the bulb yourself
(Y page 256).
or
X Visit a qualified specialist workshop. b
Active Headlamps
Inoperative The active light function is defective.
X
Visit a qualified specialist workshop. b
Malfunction See
Oper. Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. b
AUTO
Lamp Function
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop.
USA only:
X Switch off the daytime running lamps in the on-board computer
(Y page 349).
X Switch the lights on and off using the light switch. b
Please Switch Off
Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to $orc.
or
X If the rear fog lamp is switched on: press the light switch in to
the stop. Adaptive High-beam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. 370
Display messagesOn-board computer and displays

Engine
Display messages Possible causes/consequences and
M Solutions
+
Check Coolant
Level See Oper.
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 424).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. Displa
ymessages
371On-board computer and displays Z