2014 MERCEDES-BENZ B-CLASS SPORTS ECU
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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
Page 218 of 360
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
Page 220 of 360
Display messages Possible causes/consequences and
000B Solutions
Front Passenger
Airbag Disabled
See Operator's
Manual The front-passenger air bag is disabled during th
ejou rney, even
though:
R an adult
or
R ap erson larger than acertai nsizeiso ccupyin gthe front-
passenger seat
If additional forces are applied to th eseat ,the system may
interpret th eoccupant's weight as lowe rthan it actually is.
G WARNING
The front-passenger air bag does not deploy during an accident.
There is an increased risk of injury.
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 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.
X Observe the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction displaya nd 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 has disabled the front-
passenger air bag (Y page 47).
R the Front Passenger Airbag Enabled See Operator's Manual or
Front Passenger Airbag Disabled See Operator's Manual displaym
essages must not be shown in
the multifunction display.
X Wait for aperiod of at least 60 seconds until the necessary
system checksh ave been completed.
X Make sure that the displaym essages do not appearinthe
multifunction display.
If these conditionsa re 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 conditionsa re not fulfilled,the system is not operating
correctly.
X Visit aqualified specialist workshop immediately. 218
Display messagesOn-board computer and displays
Page 221 of 360
Display messages Possible causes/consequences and
000B Solutions
Fo
rfurther information about th eOccupant Classification System,
see (Y page 47). Front Passenger
Airbag Enabled See
Operator'
sManual The front-passenger air bag is enabled durin
gthe journey, even
though:
R ac hild, asmal ladult or an object weighing less than the
system' sweigh tthreshold is located on the front-passenger
seat
or
R the front-passenger seat is unoccupied
The system may detect objectsorf orces applying additional
weight on the seat.
G WARNING
The air bag may deploy unintentionally.
There is an increased risk of injury.
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 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 Make sure that there are no objectsont he seat adding to the
weight.
The system may otherwise detect the 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.
X Observe the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction displaya nd 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 (Occupant
Classification System) has disabled the front-passenger air bag
(Y page 47).
R the Front Passenger Airbag Enabled See Operator's Manual or
Front Passenger Airbag Disabled See Operator's Manual displaym
essages must not be shown in
the multifunction display. Display messages
219On-board computer and displays Z
Page 226 of 360
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
Page 229 of 360
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
Page 231 of 360
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
Page 233 of 360
Tires
Display messages Possible causes/consequence
sand 000B Solutions
Tir
ePressure Check Tires Canad
aonly:
The tire pressure loss warnin gsystem has detecte dasignificant
los sinp ressure.
Aw arning tone also sounds.
G WARNING
Wit htirep ressure swhicha re to olow, there is ariskoft he
following hazards:
R they may burst, especiallyast he load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is arisk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditionsasy ou do so.
X Secure the vehicle against rolling away (Y page 152).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 295).
X Check the tire pressures and, if necessary, correct the tire
pressure.
X Restart the tire pressure loss warning system when the tire
pressure is correct (Y page 319).Check Tire Pressure
Then Restart Run
Flat Indicator Canada only:
The tire pressure loss warning system generated
adisplay
message and has not been restarted since.
X Set the correct tire pressure in all four tires.
X Restart the tire pressure loss warning system (Y page 319).Run Flat Indicator
Inoperative Canada only:
The tire pressure loss warning system is faulty.
X
Visit aqualified specialist workshop. Correct Tire
Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X
Check the tire pressures at the next opportunity (Y page 320).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor (Y page 322). Display messages
231On-board computer and displays Z