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Active Parking Assist symbol is shown instead
of the 0003symbol (Y page 221).
If the PRE-SAFE Brake: Sensors Deactivated message appears, the radar
sensor system is deactivated.
X Activate the rada rsensor system
(Y page 281).
For more information on PRE-SAFE ®
Brake,
see (Y page 73).
Activating/deactivating ATTENTION
ASSIST X
Press 0002or0005 on the steering wheel
to select the DriveAssist menu.
X Press the 0003or0004 button to select
Attention Asst. X
Press the 000Bbutton.
The curren tselection is displayed.
X To activate/deactivate: press the000B
button again.
When ATTENTION ASSIST is activated, the
0003 symbol appears in the multifunction
display when the ignition is on.
For further information about ATTENTION
ASSIST, see (Y page 234).
Activating/deactivating Blind Spot
Assist X
Press 0002or0005 on the steering wheel
to select the DriveAssist menu.
X Press the 0003or0004 button to select
Blind Spot Asst. .
X Press the 000Bbutton.
The curren tselection is displayed.
X To activate/deactivate: press the000B
button again.
If the Blind Spot Assist Sensors Deactivated or
Active Blind Spot Assist Sensors Deactivated message
appears, the radar sensor system is
deactivated. X
Activate the radar sensor system
(Y page 281).
For further information about Blind Spot
Assist, see (Y page 237).
For further information about Active Blind
Spot Assist, see (Y page 241).
Activating/deactivating Lane Keeping
Assist X
Press 0002or0005 on the steering wheel
to select the DriveAssist menu.
X Press the 0003or0004 button to select
Lane Keep. Asst. X
Press the 000Bbutton.
The curren tselection is displayed.
X Press 000Bto confirm.
X Press 0004or0003 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 0001symbol
appears in the multifunction display when the
ignition is on.
For further information about Lane Keeping
Assist, see (Y page 239).
For further information about Active Lane
Keeping Assist, see (Y page 245). Maintenance menu
In the
Serv menu, you have the following
options:
R call up display messages in message
memory (Y page 286)
R restart the tire pressure loss warning
system (Y page 408) Menus and submenus
277On-board computer and displays Z
Page 313 of 454

Display messages Possible causes/consequences and
0001 Solutions
Blind Spot Assist or Active Blind Spot Assist is temporarily
inoperative. Possible causes are:
R
the sensors are dirty.
R function is impaired due to heavy rain or snow.
R the rada rsensor 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 0003indicator lamps also light up in the exterior
mirrors.
When the causes stated above no longer apply, the display
message disappears.
Blind Spot Assist or Active Blind Spot 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 183).
X Clean the sensors (Y page 375).
X Restart the engine. Blind Spot Assist
Inoperative or
Active Blind Spot Assist Inoperative Blind Spot Assist or Active Blind Spot Assist is defective.
The yellow
0003indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Park Assist
Canceled The driver's door is open and the driver's seat belt has not been
fastened.
X
Repeat the parking process with the seat belt fastened and the
driver's door closed. You have inadvertently touched the multifunction steering wheel
while steering intervention was active.
X
While steering intervention is active, make sure that the
multifunction steering wheel is not touched unintentionally. The vehicle has started to skid and ESP
®
has intervened.
X Use Active Parking Assist again later (Y page 221). Display messages
311On-board computer and displays Z
Page 314 of 454

Display messages Possible causes/consequences and
0001 Solutions
Park Assist
Inoperative You have just carried out a large number of turning or parking
maneuvers.
Active Parking Assis
twill become available again after
approximately ten minutes (Y page 221).
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed:
X Visit a qualified specialist workshop. PARKTRONIC is defective.
X
Visit a qualified specialist workshop. Park Assist
Finished The vehicle is parked.
Awarning tone also sounds.
The display message disappears automatically. DISTRONIC PLUS Off DISTRONIC PLU
Shas been deactivated (Y page 198).
If it was deactivated automatically, a warning tone also sounds. DISTRONIC PLUS Now
Available DISTRONIC PLU
Sis operational againa fter having been
temporarily unavailable .You can now reactivate DISTRONIC PLUS
(Y page 198). DISTRONIC PLUS
Currently
Unavailable See
Operator's Manual DISTRONIC PLUS is temporarily inoperative. Possible causes are:
R
function is impaired due to heavy rain or snow.
R the sensors in the radiator grill and the bumper are dirty.
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.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
Aw arning tone also sounds.
When the causes stated above no longer apply, the display
message disappears.
DISTRONIC is operational again.
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 183).
X Clean the sensors in the radiator grill and the bumper
(Y page 375).
X Restar tthe engine. 312
Display messagesOn-board computer and displays
Page 318 of 454

Display messages Possible causes/consequences and
0001 Solutions
Tire Press.
Monitor Currently
Unavailable Due to a source of radi
ointerference, no signals can be received
from the wheel sensors .The tire pressure monitor is temporarily
malfunctioning.
X Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been solved. TirePress.
Sensor(s) Missing There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire is not displayed in the
multifunction display.
X
Have the faulty tire pressure sensor replaced at a qualified
specialist workshop. Tire Pressure
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. Tire Press.
Monitor
Inoperative The tire pressure monitor is faulty.
X
Visit a qualified specialist workshop. Vehicle
Display messages Possible causes/consequences and
0001 Solutions
Shift to 'P' or
'N' to Start Engine You have attempted to start the engine with the transmission in
position
Ror D.
X Shift the transmission to position Por N. Auxiliary Battery
Malfunction The auxiliary battery for the automatic transmission is no longer
being charged.
X
Visit a qualified specialist workshop at the next opportunity.
X Until then, set the automatic transmission to position Pbefore
you switch off the engine.
X Before leaving the vehicle, apply the electric parking brake.
X Secure the vehicle against rolling away (Y page 183).Apply Brake to
Shift from 'P' You have attempted to move the transmission selector lever to
position
D,Ror Nwithout depressing the brake pedal.
X Depress the brake pedal. 316
Display messagesOn-board computer and displays
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