2015 MERCEDES-BENZ B-CLASS SPORTS ignition

Display messagesPossible causes/consequences andMSolutions
F(USA
only)
!(Canada
only)
Turn On the IgniZ
tion to Release
the Parking Brake
The red F(USA only)/ !(Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the igni-
tion was switched off.
X SmartKey: turn the SmartKey to position 1in the ignition lock.
X KEYLESS-GO: switch on the ignition.
F(USA
only)
!(Canada
only)
Please Release
Parking Brake
The red F(USA only)/ !(Canada only) indicator lamp
flashes and a warning tone sounds. A condition for automatic
release of the electric parking brake is not fulfilled ( Ypage 153).
You are driving with the electric parking brake applied.
X Release the electric parking brake manually.
The red F(USA only)/ !(Canada only) indicator lamp
flashes and a warning tone sounds.
You are using the electric parking brake for emergency braking ( Y page 153).
F(USA
only)
!(Canada
only)
Parking Brake See
Operator's Manual
The yellow !warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X Switch the ignition off.
X Press the electric parking brake handle for at least ten seconds.
X Shift the selector lever to position P.
X Consult a qualified specialist workshop.
The yellow !warning lamp and the red F(USA only)/ !
(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
or X Release the electric parking brake automatically ( Ypage 153).
If the electric parking brake still cannot be released: X Do not drive on.
X Consult a qualified specialist workshop.
Display messages211
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
The redF(USA only)/ !(Canada only) indicator lamp
flashes and the yellow !warning lamp lights up.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
To apply: X Switch off the ignition and turn it back on.
X Apply the electric parking brake manually.
If the red F(USA only)/ !(Canada only) indicator lamp
continues to flash:
X Do not drive on.
X Secure the vehicle against rolling away ( Ypage 323).
X Shift the selector lever to position P.
X Turn the front wheels towards the curb.
X Consult a qualified specialist workshop.
The yellow !warning lamp lights up. The red F(USA
only)/ !(Canada only) indicator lamp flashes for about ten
seconds after the electric parking brake has been applied or
released. It then goes out or remains lit.
The electric parking brake is malfunctioning. X Switch off the ignition and turn it back on.
X Apply the electric parking brake.
If it is not possible to engage the electric parking brake:
X Shift the selector lever to position P.
X Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake manually:
X Release the electric parking brake automatically ( Ypage 153).
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop.
212Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
The yellow!warning lamp lights up. If you manually apply or
release the electric parking brake, the red F(USA only)/ !
(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible to
apply the electric parking brake manually.
X Shift the selector lever to P, as the electric parking brake is not
applied automatically.
X Visit a qualified specialist workshop.
F(USA
only)
!(Canada
only)
ParkingBrakeInopZ
erative
The yellow !warning lamp lights up. The red F(USA
only)/ !(Canada only) indicator lamp flashes for about ten
seconds after the electric parking brake has been applied or
released. It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
X Remove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
X Engage or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
X Switch off the ignition and turn it back on.
X Engage or release the electric parking brake.
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop.
If the electric parking brake still cannot be applied: X Visit a qualified specialist workshop.
The yellow !warning lamp lights up and the red F(USA
only)/ !(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the selector lever to position P.
X Visit a qualified specialist workshop.
Display messages213
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Front Passenger
Airbag Disabled
SeeOperator'sManZ
ual
The front-passenger air bag is deactivated during the journey, even
though:
R an adult or
R a person of the corresponding stature is on the front-passenger
seat
If additional forces are applied to the seat, the system may inter-
pret the occupant's weight as lower than it actually is.
GWARNING
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 ( Ypage 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 indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF and PASSENGER AIR BAG ON
indicator lamps must light up simultaneously for approx-
imately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light
up and remain lit. If the indicator lamp is on, OCS has disabled
the front-passenger front air bag ( Ypage 47)
R the
FrontPassengerAirbagEnabledSeeOperator's
ManualorFrontPassengerAirbagDisabledSeeOperZ
ator's Manualdisplay messages must not be shown in the
multifunction display.
X Wait for a period of at least 60 seconds until the necessary sys-
tem checks have been completed.
X Make sure that the display messages do not appear in the mul-
tifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF or ON
indicator lamp remains lit or goes out depends on how OCS clas- sifies the occupant.
If the conditions are not fulfilled, the system is not operating cor-
rectly.
Display messages217
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see ( Ypage 47).
Front Passenger
AirbagEnabledSee
Operator's Manual
The front-passenger air bag is enabled during the journey, even
though:
R a child, a small adult or an object weighing less than the sys-
tem's weight threshold is located on the front-passenger seat or
R the front-passenger seat is unoccupied
The system may detect objects or forces applying additional
weight on the seat.
GWARNING
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 ( Ypage 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 objects on the seat adding to the
weight.
The system may otherwise detect the additional weight and
interpret the seat occupant's weight as greater than it actuallyis.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF and PASSENGER AIR BAG ON
indicator lamps must light up simultaneously for approx-
imately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light
up and remain lit. If the indicator lamp is on, OCS (Occupant
Classification System) has disabled the front-passenger front air bag ( Ypage 47)
R the
FrontPassengerAirbagEnabledSeeOperator's
ManualorFrontPassengerAirbagDisabledSeeOperZ
218Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Ð
PowerSteeringMalZ
function See OperZ
ator's Manual
The power steering is malfunctioning.
A warning tone also sounds.
GWARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop.
Ð
Steering MalfuncZ
tion See OperaZ
tor's Manual
The electric steering lock is malfunctioning.
GWARNING
The steering may be locked by the electric steering lock.
There is a risk of an accident.
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 ( Ypage 152).
X Do not drive on and consult the nearest qualified specialist
workshop.
_
Before Starting
the Engine, Turn
Steering Wheel
The electric steering lock was unable to unlock the steering.
X Remove the SmartKey from the ignition lock.
X To unlock the steering, move the steering wheel slightly.
X Insert the SmartKey into the ignition lock again.
Phone No ServiceYour vehicle is outside the network provider's transmitter/
receiver range. XWait until the mobile phone operational readiness symbol
appears in the multifunction display.
¥
Check Washer Fluid
The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X Add washer fluid ( Ypage 273).
Wiper MalfunctionZ
ing
The windshield wipers are malfunctioning.
X Visit a qualified specialist workshop.
Hazard Warning
Flashers MalfuncZ
tioning
The hazard warning lamps are faulty.
X Visit a qualified specialist workshop.
Display messages233
On-board computer and displays
Z

SmartKey
Display messagesPossible causes/consequences andMSolutions
Â
Key Does Not
Belong to Vehicle
You have put the wrong SmartKey in the ignition lock.
X Use the correct SmartKey.
Â
TakeYourKeyfrom
Ignition
The SmartKey is in the ignition lock.
X Remove the SmartKey.
Â
Obtain a New Key
The SmartKey needs to be replaced.
X Visit a qualified specialist workshop.
Â
ReplaceKeyBattery
The SmartKey battery is discharged.
X Change the battery ( Ypage 74).
Â
Don't Forget Your
Key
The display message is shown for a maximum of 60 seconds and
is only a reminder.
You have opened the driver's door with the engine switched off.
The SmartKey is not in the ignition lock.
X Take the SmartKey with you when you leave the vehicle.
Â
Key Not Detected
(red display message)
The SmartKey is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
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 ( Ypage 152).
X Locate the SmartKey.
Because there is interference from a strong source of radio waves,
the key is not detected whilst the engine is running.
A warning tone also sounds.
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 ( Ypage 152).
X Insert the SmartKey into the ignition lock and bring into keymode.
234Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Â
Key Not Detected
(white display mes-
sage)
The SmartKey is currently undetected.
X Change the location of the SmartKey in the vehicle.
If the SmartKey still cannot be detected:
X Operate the vehicle with the SmartKey in the ignition lock.
Â
Remove'Start'ButZ
ton and Insert Key
The SmartKey is continually undetected.
KEYLESS-GO is temporarily malfunctioning or is defective. A warn-
ing tone also sounds.
X Insert the SmartKey into the ignition lock and turn it to the
desired position.
X Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
General notes
Some systems carry out a self-diagnosis when the ignition is switched on. Therefore, some
indicator and warning lamps may light up or flash temporarily. This behavior is non-critical.
These indicator and warning lamps only indicate a malfunction if they light up or flash after
starting the engine or whilst driving.
Safety
Seat belts
ProblemPossible causes/consequences and MSolutions
ü
After starting the
engine, the red seat
belt warning lamp lights
up for 6 seconds.The seat belt warning lamp reminds the driver and front passenger to fasten their seat belts.
X Fasten your seat belt ( Ypage 42).
ü
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a warn-
ing tone sounds for up
to 6 seconds.The driver's seat belt is not fastened.
X Fasten your seat belt ( Ypage 42).
The warning tone ceases.
Wa rning and indi cator lamps in the instrument cluster235
On-board computer and displays
Z