2014 MERCEDES-BENZ B-CLASS SPORTS Owners Manual

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

Engine
Display messages Possible causes/consequences and
000B Solutions
0014
Check Coolant
Level See
Operator'
sManual The coolant leve
listoolow.
! Avoid making lon gjou rneys with to olittle coolant in th eengine
cooling system. The engin ewill otherwise be damaged.
X Add coolant ,observing th ewarning note sbefore doin gso
( Ypage 283).
X If coolant needs to be added mor eoften than usual, have the
engin ecoolant system checked at aqualifie dspecialist
workshop. 0010 The fan motor is faulty.
X
At coolant temperatures below 24 8‡(120† ), driv etothe
neares tqualified specialist workshop.
X Avoid subjecting th eenginetoh eavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. 0010
Coolant Too Hot
Stop Vehicle Turn
Engine Off The coolant is too hot.
Aw
arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan caus esome
fluids whic hmay have leaked int othe engin ecom partmen tto
catch fire.
Stea mfrom the overheated engine can alsoc auseserious burns
which can occur just by opening the hood.
There is arisk of injury.
X Pullo ver and stop the vehicl esafel yand switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicl eagainst rolling away (Y page152).
X Waitu ntil the engine ha scoole ddown.
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 displaym essage 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 aqualified specialist
workshop immediately.
Under normal operating conditionsa nd with the specified coolant
level, the coolant temperature may rise to 248 ‡(120 †). 224
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
000B Solutions
0012 The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R ad efective alternator
R at ornp oly-V-belt
R am alfunctio nintheelectronics
X Pull ove rand stop the vehicl esafelya nd switch off the engine,
paying attentio ntoroada nd traffic conditions.
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 aqualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit aqualified specialist workshop immediately. 0008
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 281).
X If necessary, add engine oil (Y page 282).
X Have the engine checked at aqualified 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. 0007
Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. Display messages
225On-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
Blind Spo
tAssist Inoperative Blind Spot Assis
tisdefective.
The yellow 0006indicator lamps also light up in the exterior
mirrors.
X Visit aqualified specialist workshop. Park Assist
Canceled The driver's door is open and the driver's seat belt has not been
fastened.
X
Repeatt he 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 175).Park Assist
Inoperative You have just carried out
alarge number of turning or parking
maneuvers.
Active Parking Assist will become available again after
approximately ten minutes (Y page 175).
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 displaym essage continues to be displayed:
X Visit aqualified specialist workshop. PARKTRONIC is defective.
X
Visit aqualified specialist workshop. DISTRONIC PLUS Off DISTRONIC PLUS has been deactivated (Y
page 162). If it was
deactivated automatically ,awarning tone also sounds. DISTRONIC PLUS Now
Available DISTRONIC PLUS is operational again after having been
temporarily unavailable. You can now reactivate DISTRONIC PLUS
(Y
page 162). 228
Display messagesOn-board computer and displays

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
Cruise Control
Inoperative Cruis
econtro lisdefective.
Aw arning tone also sounds.
X Visi taq ualified specialist workshop. Cruise Control
---m
ph Ac
ondition for activatin gcruise control has not been fulfilled.
You have tried to store aspeed below 20 mph (30 km/h), for
example.
X If condition spermit ,drive faster than 20 mph (30 km/h) and
stor ethe speed.
X Check the activation condition sfor cruise control
(Y page 161). 230
Display messagesOn-boar
dcomputer and displays