2016 MERCEDES-BENZ B-Class ELECTRIC lights

Display messagesPossible causes/consequences andMSolutions
The yellow!warning lamp lights up. The red F(USA only)
or ! (Canada only) indicator lamp flashes for about ten sec-
onds after the electric parking brake has been applied or released.
It then goes out or remains lit.
The electric parking brake is malfunctioning.
XSwitc h offthe ignition and turn it back on.
XApply the electric parking brake.
If it is not possible to engage the electric parking brake:
XShift th e transmission to position P.
XVisit a qualified specialist workshop.
If it is not possible to release the electric parking brake manually:
XRelease the electric parking brake automatically (Ypage 155).
If th e electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
The yellow !warning lamp lights up. If you manually apply or
release the electric parking brake, the red F(USA only) or !
(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible to
apply the electric parking brake manually.
XShift th e selector lever to P, as the electric parking brake is not
applied automatically.
XVisit a qualified specialist workshop.
Display messages20 7
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
F(USA
only)
!(Canada
only)
Parking
BrakeInop‐
erative
The yellow !warning lamp lights up. The red F(USA only)
or ! (Canada only) indicator lamp flashes for about ten sec-
onds 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.
XRectify the cause of the overvoltage or undervoltage, e.g. by
chargin gth ebattery or restarting the drive system.
XEngage or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
XSwitc h offthe ignition and turn it back on.
XEngage or release the electric parking brake.
If th e electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
If th e electric parking brake still cannot be applied:
XVisit a qualified specialist workshop.
The yellow !warning lamp lights up and the red F(USA
only) or !(Canada only) indicator lamp flashes.
It is no t possible to apply the electric parking brake manually.
XShift th e transmission to position P.
XVisit a qualified specialist workshop.
$(USA
only)
J(Canada
only)
Check Brake Fluid
Level
There is not enough brake fluid in the brake fluid reservoir.
A warning tone sounds. The $(USA only) or J(Canada
only) warning lamps in the instrument cluster may also light up.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecur eth e vehicle against rolling away (Ypage 153).
XConsult a qualified specialist workshop.
XDo no t add brake fluid. This does not correctth e malfunction.
208Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Radar Sensors
Dirty See Opera‐
tor's Manual
COLLISION PREVENTION ASSIST PLUS is temporarily restricted or
inoperative.
Possible causes are:
Rthe sensors in the radiator trim and/or in the bumpers are dirty
Rthe function of COLLISION PREVENTION ASSIST PLUS is
impaired due to heavy rain or snow.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage disappears. COLLISION PREVENTION ASSIST PLUS is opera-
tional again.
If th e display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecur eth e vehicle against rolling away (Ypage 153).
XSwitc h offthe drive system.
XClean the sensors in the following location s(Ypage 277):
Rin the radiatortrim
Rin thefront bumper
Rin the rear bumper, particularly in the middle of the rear
bumper
XStart th e drive system again.
The display message disappears.
ã
Acoustic Vehicle
Indication Inoper‐
ative
The sound generator is not working. The vehicle can still be driven;
however, no vehicle sounds can be generated. As a result, your
vehicle may not be heard by other road users until it is very close
to them, or it may not be heard at all.
XDrive with particular care, allowing for the possibility that other
road users may behave unpredictably.
XVisit a qualified specialist workshop.
6
SRS Malfunction
Service Required
The restraint system is faulty. The 6warning lamp also lights
up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
Fo r further information about the restraint system, see
(
Ypage 40).
210Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
6
FrontLeftMalfunc‐
tion Service
RequiredorFront
Right Malfunction
Service Required
The restraint system has malfunctioned at the front on the left or
right. The 6warning lamp also lights up in the instrument clus-
ter.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
6
Rear Left Malfunc‐
tion Service
Requiredor Rear
Right Malfunction
Service Required
The rear left-hand or right-hand restraint system has malfunc-
tioned. The 6warning lamp also lights up in the instrument
cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
6
Rear Center Mal‐
function Service
Required
The rear center restraint system has malfunctioned. The 6
warning lamp also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
6
Left Side Curtain
AirbagMalfunction
Service Required
or Right Side Cur‐
tain Airbag Mal‐
function Service
Required
There is a malfunction in the left-hand or right-hand window cur-
tain air bag. The 6warning lamp also lights up in the instrument
cluster.
GWARNING
The left or right window curtain air bag may either be triggered
unintentionally or, in the event of an accident, may not be trig-
gered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
Display messages21 1
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
is on, OCS has disabled the front-passenger front air bag
(
Ypage 50)
RtheFront Passenger Air Bag Enabled See Opera‐
tor's Manualor Front Passenger Air Bag Disabled
See Operator's Manualdisplay messages must not be
shown in the multifunction display
XWait fo raperiod of at least 60 seconds until the necessary sys-
te m checks have been completed.
XMake 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 AIRBA G OFF or ON
indicator lamp remains lit or goes out depends on how OCS clas-
sifies the occupant.
If th e conditions are not fulfilled, the system is not operating cor-
rectly.
XVisit a qualified specialist workshop immediately.
Fo r further information about the Occupant Classification System,
see (
Ypage 50).
Lights
i
Vehicles with LED bulbs in the light clusters:
The display message for the corresponding lamp only appears when all of the LEDs in the
lamp have failed.
Display messagesPossible causes/consequences and MSolutions
b
Check Left Corner‐
ing LightorCheck
Right Cornering
Light
The left or right-hand cornering light is defective.
XCheck whether you are permitted to replace the bulb yourself
(
Ypage 104).
or
XVisit a qualified specialist workshop.
b
Check Left Low
Beamor Check
Right Low Beam
The left or right-hand low-beam headlamp is defective.
XCheck whether you are permitted to replace the bulb yourself
(
Ypage 104).
or
XVisit a qualified specialist workshop.
214Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
b
Active Headlamps
Inoperative
The active light function is faulty.
XVisit a qualified specialist workshop.
b
Malfunction See
Operator's Manual
The exterior lighting is defective.
XVisit a qualified specialist workshop.
b
AutoLampFunction
Inoperative
The light sensor is defective.
XVisit a qualified specialist workshop.
b
Switch Off Lights
The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
XTurn the light switch to the Ãposition.
b
SwitchOnHeadlamps
You are driving with low-beam headlamps switched off.
XTurnthe light switch to the Lorà position.
Display messages217
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Â
Key Not Detected
(white display mes-
sage)
The SmartKey is currently undetected.
XChange the location of theSmartKey in the vehicle.
If th e SmartKey still cannot be detected:
XOperate the vehicle with theSmartKey in th e ignition lock.
Â
Remove'Start'But‐
ton and Insert Key
The SmartKey is continually undetected.
KEYLESS-GO is temporarily malfunctioning or is defective. A warn-
ing tone also sounds.
XInserttheSmartKey into th e ignition lock and turn it to the
desired position.
XVisit 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 warning and indicator lamps only indicate a malfunction if they light up or flash after the
drive system is started or during a journey.
Safety
Seat belts
ProblemPossible causes/consequences and MSolutions
ü
After starting thedrive
system, the red seat
belt warning lamp lights
up for6 seconds.The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
XFasten your seat belt (Ypage 44).
ü
After starting thedrive
system, the red seat
belt warning lamp lights
up. In addition ,awarn-
ing tone sounds for up
to 6 seconds.The driver's seat belt is not fastened.
XFasten your seat belt (Ypage 44).
The warning tone ceases.
Warning and indicator lamps in the instrument cluster229
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
ü
The red seat belt warn-
ing lamp lights up after
the drive system starts,
as soon as the driver's
or the front-passenger
door is closed.The driver or front passenger has not fastened their seat belt.
XFasten your seat belt (Ypage 44).
The warning lamp goes out.
There are objects on the front-passenger seat.
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out.
ü
The red seat belt warn-
ing lamp flashes and an
intermittent audible
warning sounds.The driver or front passenger has not fastened their seat belt. The
vehicle is being driven faster than 15 mph (25 km/h) or has briefly been driven faster than 15 mph (25 km/h).
XFasten your seat belt (Ypage 44).
The warning lamp goes out and the intermittent warning tone
ceases.
There are objects on the front-passenger seat. The vehicle is being
driven faster than 15 mph (25 km/h) or has briefly been driven
faster than 15 mph (25 km/h).
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases.
230Warning and indicator lamps in the instrument cluster
On-board computer and displays