2014 MERCEDES-BENZ B-CLASS SPORTS sensor

Display messages Possible causes/consequences and
000B Solutions
Collision
Preventio
nAssist Plus
Currently
Unavailable See
Operator'
sManual COLLISION PREVENTION ASSIST PLU
Sistemporarily not
operational. Possibl ecauses are:
R thef ront bumper is dirty.
R function is impaire ddue to heav yrain or snow.
R ther ada 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 operatin gtemperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display
message disappears.
COLLISION PREVENTION ASSISTP LUS is operational again.
If the display messag edoes not disappear:
X Pullo ver and stop the vehicle safelyass oon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away( Ypage 152).
X Clean the front bumper (Y page 289).
X Restart the engine. Collision
Prevention Assist
Plus
Inoperative COLLISION PREVENTION ASSISTP
LUS is malfunctioning. The
distance warning signal may also have failed.
X Visit aqualified specialist workshop. Display messages
215On-board computer and displays Z

Display messages Possible causes/consequences and
000B Solutions
PRE-SAFE
Functions
Currently Limited
See Owner'
sManual Adaptive Brake Assis
tistemporarily inoperative. Possible causes
are:
R the front bumper is dirty.
R function is impaired due to heavy rain or snow.
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.
When the causes stated above no longer apply,t he display
message disappears.
Adaptive Brake Assist is operational again.
If the displaym essage does not disappear:
X Pull over and stop the vehicle safely as soon as possible,p aying
attention to road and traffic conditions.
X Secure the vehicle against rolling away( Ypage 152).
X Cleant he front bumper (Y page 289).
X Restart the engine. PRE-SAFE
Functions Limited
See Operator's
Manual Adaptive Brake Assist is faulty. The distance warning signal may
also have failed.
X
Visit aqualified specialist workshop. 0021
SRS Malfunction
Service Required There is
amalfunction in the SRS (Supplemental Restraint
System). The 0021warning lamp also lights up in the instrument
cluster.
G WARNING
The air bags or EmergencyT ensioning 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 aqualified specialist workshop.
Further information on occupant safety (Y page 40).216
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
000B Solutions
000D
Check
Left Daytime
Running
Light orCh
eckR ight Daytim
eRunning Light The left-han
dorright-hand daytime running lamp is faulty.
X Visit aqualified specialist workshop.
X Chec kwhether you are permitted to replace the bulb yourself
(Y page 110).
or
X Visit aqualified specialist workshop. 000D
Active Headlamps
Inoperative The active light function is defective.
X
Visit aqualified specialist workshop. 000D
Malfunction See
Operator's Manual The exterior lighting is defective.
X
Visit aqualified specialist workshop. 000D
Auto
Lamp Function
Inoperative The light sensor is defective.
X
Visit aqualified specialist workshop. 000D
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 000C.Adaptive Highbeam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit aqualified 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 message is
displayed.
Adaptive Highbeam Assist is operational again. Display messages
223On-board computer and displays Z

Display messages Possible causes/consequences and
000B Solutions
0006 There is only
averys ma ll amount of fuel in th efuel tank.
X Refue lattheneares tgas statio nwithout fail. 0007
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 th efuel filler cap is not correctly closed:
X Close the fuel filler cap.
If th efuel filler cap is correctly closed:
X Visit aqualified specialist workshop. Driving systems
Displa
ymessages Possibl
ecauses/consequences and 000B Solutions
0001
Attention Assist:
Tak
eaB reak! Base
donc ertain criteria, ATTENTION ASSIST has detected fatigue
or alack of concentratio nonthe part of th edriver. Awarning tone
alsos ounds.
X If necessary ,take abreak.
During long journeys, take regular breaks in good time so you get
enoug hrest. 0001
Attentio
nAssist Inoperative ATTENTION ASSIST is inoperative.
X
Visi taq ualified specialist workshop. 0005
Off The HOLD function is deactivated. the vehicle is skidding.
Aw
arning tone also sounds.
X Reactivat ethe HOLD function late r(Ypage 171). The HOLD function is deactivated. When th
ebrak epedal is firmly
depressed, an activation condition is not fulfilled.
Aw arning tone also sounds.
X Chec kthe activation condition sfor th eHOLDf unction
(Y page 171). Radar Sensors
Deactivated See
Operator'
sManual The radar sensor system is deactivated.
X
Switch on th eradar sensor system (Y page 205).226
Display messagesOn-boar
dcomputer and displays

Display messages Possible causes/consequences and
000B Solutions
Lan
eK eeping Assist Currently
Unavailable See
Operator'
sManual Lan
eKeepin gAssistisd eactivated and temporarily inoperative.
Possible causes are:
R the windshieldint he 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 alonger period.
R the lane markings are worn, dark or covered, e.g. by dirt or snow.
When the causes stated above no longer apply,t he display
message disappears.
Lane Keeping Assist is operational again.
If the displaym essage does not disappear:
X Pull over and stop the vehicle safely as soon as possible,p aying
attention to road and traffic conditions.
X Secure the vehicle against rolling away( Ypage 152).
X Cleant he windshield. Lane Keeping
Assist Inoperative Lane Keeping Assist is faulty.
X
Visit aqualified specialist workshop. Blind Spot Assist
Currently
Unavailable See
Operator's Manual 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 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 0006indicator lamps also light up in the exterior
mirrors.
When the causes stated above no longer apply,t he display
message disappears.
Blind Spot Assist is operational again.
If the displaym essage 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 152).
X Cleant he sensors (Y page 289).
X Restart the engine. Display messages
227On-board computer and displays Z

Display messages Possible causes/consequences and
000B Solutions
DISTRONIC PLUS
Currently
Unavailable See
Operator'
sManual DISTRONIC PLU
Sistemporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator trim 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 th ecauses state dabov enol onger apply, th edisplay
message disappears.
DISTRONI Cisoperational again.
If th edisplay 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 rollin gaway (Y page 152).
X Clean the sensors in the radiator trim (Y page 289).
X Restar tthe engine. DISTRONIC PLUS
Inoperative DISTRONIC PLUS is defective. Adaptive Brake Assist may also
have failed.
Aw
arning tone also sounds.
X Visi taq ualified specialist workshop. DISTRONIC PLUS
Passive 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
---m
ph An activation condition for DISTRONIC PLUS is not fulfilled.
X
Check the activation condition sfor DISTRONIC PLUS
(Y page 164). Display messages
229On-boardcomputer and displays Z

Display messages Possible causes/consequences and
000B Solutions
Tir
eP ress. Monito
rCurrently Unavailable Due to
asource of radi ointerference ,nosignals can be received
from the whee lsensors .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 aqualified
specialist workshop. Tire Pressure
Monitor
Inoperative No
Wheel Sensors The wheels mounted do not have
asuitable 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 afew minutes. Tire Press.
Monitor
Inoperative The tire pressure monitor is faulty.
X
Visit aqualified specialist workshop. Vehicle
Display messages Possible causes/consequencesa
nd000B 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 aqualified 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. Depress Brake to
Start Engine You have attempted to start the engine with the transmission in
position
Nwithout depressing the brake pedal.
X Depress the brake pedal. Display messages
233On-board computer and displays Z

Engine
Problem Possible causes/consequences and
000B Solutions
000A
The yellow Check
Engin
ewarning lamp
light supw hile the
engin eisrunning. Ther
emay be amalfunction, for example:
R in th eenginem anagement
R in th efuel injection system
R in th eexhaust system
R in th eignition system
R in th efuel system
The emission limit values may be exceeded and th eenginem ay
be runnin ginemergenc ymode.
X Hav ethe vehicle checked as soon as possible at aqualified
specialist workshop.
i In som estates, you must immediately visit aqualified
specialist worksho passoon as th eyellow Chec kEngine warning
lamp lights up .This depends on the locally applicable legal
requirements. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving. 0007
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 0007
The yellow reserve fuel
warning lamp flashes
while the engine is
running.
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.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visitaqualified specialist
workshop. 0010
The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gage is at
the start of the scale.
The temperature sensor for the coolant temperature gage is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away (Y page 152).
X Consult aqualified specialist workshop. Warning and indicator lampsint
he instrument cluster
245On-board computer and displays Z