2014 MERCEDES-BENZ CL-Class Owner's Manual

Driving systems
Display messages Possible causes/consequences and
M Solutions
À
Attention Assist:
Drowsiness
Detected Based on specific criteria, ATTENTION ASSIST has determined that
the driver is tired or paying less attention
.Awarning tone also
sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest. À
Attention Assist
Inoperative ATTENTION ASSIST has failed.
X Visi taqualified specialist workshop. Á
Night View Assist
Inoperative Night View Assist Plus is defective.
X Visit a qualified specialist workshop. Á
Night View Assist
Currently
Unavailable The temperature of the camera is too high.
X
Wait until you see the Night View Assist Available Again display message.
You can also:
X Fold the camera cover down (Y page 432).
X Adjust the air distribution of the automatic air conditioning
upwards. Á
Night View Assist
Lights Must Be Set
To AUTO or ON Ac
ondition for activating Night View Assist Plus has not been
fulfilled.
X Turn the light switch to corL. Á
Night View Assist
Not In Reverse Gear Ac
ondition for activating Night View Assist Plus has not been
fulfilled.
X Shift the transmission to P,Nor D. Á
Night View Assist
Lights ON or AUTO,
Not in R Gear Ac
ondition for activating Night View Assist Plus has not been
fulfilled.
X Turn the light switch to corL.
X Shift the transmission to P,Nor D. Display messages
375On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
Á
Night View Assist
Only When It Is
Dark You have attempted to activate Night View Assis
tPlus in the
daytime.
Night View Assist Plus can only be activated when it is dark. ¨
Vehicle Rising Your vehicle is adjusting to the level you have selected.
¨
Vehicle Rising
Please Wait Briefly The vehicle level is too low when the vehicle is stationary. A
warning tone also sounds.
X
Do not pull away.
The vehicle level is set when the display message disappears. ¨
STOP Car Too Low You have pulled away while the vehicle level is still too low.
AIRMATIC sets the vehicle to the selected level after a short
period.
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 Wait until the display message disappears before pulling away. AIRMATIC is defective.
Awarning tone also sounds.
X Do not drive at speeds above 50 mph (80 km/h).
X Make only sligh tsteering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement
is too large.
X Liste nfor scraping sounds.
X Pull over and stop the vehicle safely, paying attention to road
and traffic conditions, and select a higher vehicle level.
Depending on the malfunction, it may be possible to raise the
vehicle.
X Visit a qualified specialist workshop. ¨
Malfunction The AIRMATIC function is restricted. The vehicle's handling
characteristics may be affected.
X
Do not drive at speeds above 50 mph (80 km/h).
X Visit a qualified specialist workshop. 376
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
ABC
Malfunction Stop
Vehicle The ABC (Active Body Control) vehicle level is too low.
X
Pull ove rand stop the vehicle safely as soo nas possible, paying
attention to road and traffic conditions.
After a few seconds, the vehicle level is adjusted and the display
message disappears. The vehicle is leaking oil.
The display message is shown continuously.
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 Notify a qualified specialist workshop or breakdown service. The display message is shown continuously.
ABC is malfunctioning.
X Do not drive at speeds above 50 mph (80 km/h).
X Make only slight steering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement
is too large.
X Listen for scraping sounds.
X Visit a qualified specialist workshop. ABC
Vehicle Rising
Please Wait Briefly The ABC vehicle level is too low when the vehicle is stationary.
X
Do not pull away.
The vehicle level is set when the display message disappears. ABC
Malfunction The ABC function is restricted. The vehicle's handling
characteristics may be affected.
X
Do not drive at speeds above 50 mph (80 km/h).
X Visit a qualified specialist workshop. ë
Off The HOLD function is deactivated. The vehicle is skidding.
Aw
arning tone also sounds.
X Reactivate the HOLD function later (Y page 308). 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 308). Display messages
377On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
Radar Sensors
Deactivated See
Oper. Manual The rada
rsensor system is deactivated.
X Switch on the radar sensor system (Y page 350).Active Lane
Keeping Assist
Currently
Unavailable See
Oper. Manual 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 dirt or snow.
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 windshield.
If the system detects that the camera is fully operational, the
display message disappears.
Active Lane Keeping Assist is operational again. Active Lane
Keeping Assist
Inoperative Active Lane Keeping Assist is defective.
X
Visit a qualified specialist workshop. 378
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
Active Blind Spot
Assist
Currently
Unavailable See
Operator's Manual Active Blind Spot Assis
tis temporarily inoperative. Possible
causes are:
R the sensors are dirty.
R function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
The yellow 9indicator lamps also light up in the exterior
mirrors.
If the display message does not disappear:
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 Cleant he sensors (Y page 431).
X Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
Active Blind Spot Assist is operational again. Active Blind Spot
Assist
Inoperative Active Blind Spot Assist is defective.
The yellow
9indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Parking Guidance
Inoperative Parking Guidance is malfunctioning (Y
page 315).
X Restart the engine.
If the display message continues to be displayed:
X Visit a qualified specialist workshop. Display messages
379On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
Parking Guidance
Canceled Parking Guidance is deactivated. Possible causes are:
R
the vehicle is skidding.
R the sensors are dirty.
R a malfunction has occurred.
X Reactivate Parking Guidance later ( Ypage 315).
If the parking space symbol does no tappear in the multifunction
display at speeds below 19 mph (30 km/h):
X Clean the sensors (Y page 431).
X Restart the engine.
If the parking space symbol still does not appear in the
multifunction display at speeds below 19 mph (30 km/h):
X Visit a qualified specialist workshop. Parking Guidance has been deactivated because you are no longer
following the recommended path.
X
Park again and, while doing so, observe the display messages
in the multifunction display. Parking Guidance
Finished The vehicle is parked.
Awarning tone also sounds.
The display message disappears automatically. DISTRONIC PLUS
Off DISTRONIC PLU
Shas been deactivated (Y page 298). If it was
deactivated automatically, a warning tone also sounds. DISTRONIC PLUS
Available Again DISTRONIC PLU
Sis operational againa fter having been
temporarily unavailable .You can now reactivate DISTRONIC PLUS
(Y page 298). 380
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
DISTRONIC PLUS
Currently
Unavailable See
Operator's Manual DISTRONIC is deactivated and 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.
Aw arning tone also sounds.
If the display message does no tdisappear:
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 Restar tthe engine.
If the system detects that the sensors are fully operational, the
display message disappears.
DISTRONIC is operational again. DISTRONIC PLUS
Inoperative DISTRONIC PLUS is defective. BAS PLUS (Brake Assist PLUS) and
PRE-SAFE
®
Brake may be inoperative as well.
Aw arning tone also sounds.
X Visi taqualified specialist workshop. DISTRONIC PLUS
Override You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X
Remove your foot from the accelerator pedal. DISTRONIC PLUS
--- mph An activation condition for DISTRONIC PLUS is not fulfilled.
X
Check the activation conditions for DISTRONIC PLUS
(Y page 298). Display messages
381On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
Cruise Control
Inoperative Cruise control is defective.
Aw
arning tone also sounds.
X Visi taqualified specialist workshop. Cruise Control
--- mph Ac
ondition for activating cruise control has not been fulfilled.
You have tried to store aspeed below 20 mph (30 km/h), for
example.
X If conditions permit, drive faster than 20 mph (30 km/h) and
store the speed.
X Check the activation conditions for cruise control
(Y page 296). Tires
Display messages Possible causes/consequences and
M Solutions
tire pressures
displayed after
driving a few
minutes The tire pressure monitor is measuring the tire pressure.
X
Drive on.
The tire pressures appear in the multifunction display after you
have been driving for a few minutes. tire press. monitor
inoperative The tire pressure monitor is faulty.
X
Visit a qualified specialist workshop. tire press. monitor
inoperative No
wheel sensors The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
X
Mount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes. 382
Display messagesOn-board computer and displays