MERCEDES-BENZ B-Class ELECTRIC 2015 W246 Owner's Manual
Manufacturer: MERCEDES-BENZ, Model Year: 2015, Model line: B-Class ELECTRIC, Model: MERCEDES-BENZ B-Class ELECTRIC 2015 W246Pages: 338, PDF Size: 6.61 MB
Page 211 of 338
Display messages
Possible causes/consequences and
M
MSolutions #
Check Brake Pad Check Brake Pad
Wear Wear The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. G
Inoperative
Inoperative One or more main features of the mbrace system are malfunc-
tioning.
X Have the mbrace system checked immediately at a qualified
specialist workshop. Collision Preven‐ Collision Preven‐
tion Assist Plus tion Assist Plus
Currently Unavail‐ Currently Unavail‐
able See Opera‐ able See Opera‐
tor's Manual tor's Manual COLLISION PREVENTION ASSIST PLUS is temporarily not opera-
tional.
Possible causes are:
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions 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, the display mes-
sage disappears.
COLLISION PREVENTION ASSIST PLUS is operational again.
If the display message 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 153).
X Start the drive system again. Collision Preven‐ Collision Preven‐
tion Assist Plus tion Assist Plus
Inoperative Inoperative COLLISION PREVENTION ASSIST PLUS is temporarily inoperative
due to a malfunction. Adaptive Brake Assist may also have failed.
X Visit a qualified specialist workshop. Display
messages
209On-board computer and displays Z
Page 212 of 338
Display messages
Possible causes/consequences and
M
MSolutions Radar Sensors
Radar Sensors
Dirty See Opera‐ Dirty See Opera‐
tor's Manual tor's Manual COLLISION PREVENTION ASSIST PLUS is temporarily restricted or
inoperative.
Possible causes are:
R the sensors in the radiator trim and/or in the bumpers are dirty.
R the 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 the display message 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 153).
X Switch off the drive system.
X Clean the sensors in the following locations (Y page 275):
R in the radiator trim
R in the front bumper
R in the rear bumper, particularly in the middle of the rear
bumper
X Start the drive system again.
The display message disappears. 6
SRS Malfunction SRS Malfunction
Service Required Service Required The restraint system is faulty. The
6warning lamp also lights
up in the instrument cluster.
G WARNING
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.
X Visit a qualified specialist workshop.
For further information about the restraint system, see
(Y page 40). 210
Display
messagesOn-board computer and displays
Page 213 of 338
Display messages
Possible causes/consequences and
M
MSolutions 6
Front Front
Left
LeftMalfunc‐
Malfunc‐
tion Service
tion Service
Required Required orFront
Front
Right Malfunction
Right Malfunction
Service Required 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.
G WARNING
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.
X Visit a qualified specialist workshop. 6
Rear Left Malfunc‐ Rear Left Malfunc‐
tion Service tion Service
Required Required
orRear
Rear
Right Malfunction
Right Malfunction
Service Required Service Required The rear left-hand or right-hand restraint system has malfunc-
tioned. The 6warning lamp also lights up in the instrument
cluster.
G WARNING
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.
X Visit a qualified specialist workshop. 6
Rear Center Mal‐ Rear Center Mal‐
function Service function Service
Required Required The rear center restraint system has malfunctioned. The
6
warning lamp also lights up in the instrument cluster.
G WARNING
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.
X Visit a qualified specialist workshop. 6
Left Side Curtain Left Side Curtain
Airbag Airbag
Malfunction
Malfunction
Service Required
Service Required
or Right Side Cur‐ Right Side Cur‐
tain Airbag Mal‐
tain Airbag Mal‐
function Service function Service
Required 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.
G WARNING
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. X Visit a qualified specialist workshop. Display
messages
211On-board computer and displays Z
Page 214 of 338
Display messages
Possible causes/consequences and
M
MSolutions Front Passenger
Front Passenger
Airbag Disabled Airbag Disabled
See See
Operator's
Operator's Man‐
Man‐
ual
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.
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 153).
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 (Y page 49)
R the Front Front Passenger
Passenger Airbag
AirbagEnabled
Enabled See
SeeOperator's
Operator's
Manual
Manual orFront
Front Passenger
Passenger Airbag
AirbagDisabled
Disabled See
SeeOper‐
Oper‐
ator's Manual
ator's Manual display 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. 212
Display
messagesOn-board computer and displays
Page 215 of 338
Display messages
Possible causes/consequences and
M
MSolutions X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see (Y page 49). Front Passenger
Front Passenger
Airbag Airbag
Enabled
Enabled See
See
Operator's Manual
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.
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 153).
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 actually
is.
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 (Y page 49)
R the Front Front Passenger
Passenger Airbag
AirbagEnabled
Enabled See
SeeOperator's
Operator's
Manual
Manual orFront
Front Passenger
Passenger Airbag
AirbagDisabled
Disabled See
SeeOper‐
Oper‐ Display
messages
213On-board computer and displays Z
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Display messages
Possible causes/consequences and
M
MSolutions ator's Manual
ator's Manual
display 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.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see (Y page 49). Lights
i Vehicles with LED bulbs in the light clusters:
The display message for the corresponding light will only appear if all the LEDs have failed. Display messages
Possible causes/consequences and
M MSolutions b
Check Left Corner‐ Check Left Corner‐
ing Light ing Light
orCheck
Check
Right Cornering
Right Cornering
Light Light The left or right-hand cornering light is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Check Left Low Check Left Low
Beam Beam
orCheck
Check
Right Low Beam
Right Low Beam The left or right-hand low-beam headlamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Check Rear Left Check Rear Left
Turn Signal Turn Signal
or
Check Rear Right
Check Rear Right
Turn Signal Turn Signal The rear left-hand or rear right-hand turn signal is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. 214
Display
messagesOn-board computer and displays
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Display messages
Possible causes/consequences and
M
MSolutions b
Check Front Left Check Front Left
Turn Signal Turn Signal
or
Check Front Right
Check Front Right
Turn Signal Turn Signal The front left-hand or front right-hand turn signal is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Check Left Mirror Check Left Mirror
Turn Signal Turn Signal
or
Check
Check Right
RightMirror
Mirror
Turn Signal
Turn Signal The turn signal in the left-hand or right-hand exterior mirror is
defective.
X Visit a qualified specialist workshop. b
Check Check
Center
Center Brake
Brake
Lamp
Lamp The high-mounted brake lamp is faulty.
X
Visit a qualified specialist workshop. b
Check Left Brake Check Left Brake
Lamp Lamp
orCheck
Check
Right Brake Lamp
Right Brake Lamp The left or right-hand brake lamp is defective.
X Visit a qualified specialist workshop. b
Check Left High Check Left High
Beam Beam
orCheck
Check
Right High Beam
Right High Beam The left or right-hand high beam is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
License Plate Lamp License Plate Lamp The left or right-hand license plate lamp is faulty.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Rear Fog Lamp Rear Fog Lamp The rear fog lamp is faulty.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. Display
messages
215On-board computer and displays Z
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Display messages
Possible causes/consequences and
M
MSolutions b
Check Front Left Check Front Left
Parking lamp Parking lamp
or
Check Front Right
Check Front Right
Parking Lamp Parking Lamp The front left or front right parking or standing lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Backup Light Backup Light The backup lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Check Left Tail Check Left Tail
Lamp Lamp
orCheck
Check
Right Tail Lamp
Right Tail Lamp The left or right-hand tail lamp is defective.
X Visit a qualified specialist workshop. b
Check Front Left Check Front Left
Sidemarker Lamp Sidemarker Lamp
or
Check Front Right
Check Front Right
Sidemarker Lamp Sidemarker Lamp The front left-hand or front right-hand side marker lamp is faulty.
X Visit a qualified specialist workshop. b
Check Rear Left Check Rear Left
Sidemarker Lamp Sidemarker Lamp
or
Check Rear Right
Check Rear Right
Sidemarker Lamp Sidemarker Lamp The rear left-hand or rear right-hand side marker lamp is faulty.
X Check whether you are permitted to replace the bulb yourself
(Y page 106).
or
X Visit a qualified specialist workshop. b
Check Check
Left
LeftDaytime
Daytime
Running Light
Running Light or
Check Right Day‐
Check Right Day‐
time Running Light time Running Light The left or right-hand daytime running lamp is faulty.
X Visit a qualified specialist workshop. b
Active Headlamps Active Headlamps
Inoperative Inoperative The active light function is faulty.
X Visit a qualified specialist workshop. b
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is defective.
X Visit a qualified specialist workshop. 216
Display
messagesOn-board computer and displays
Page 219 of 338
Display messages
Possible causes/consequences and
M
MSolutions b
Active Headlamps Active Headlamps
Inoperative Inoperative The light sensor is defective.
X Visit a qualified specialist workshop. b
Switch Off Lights 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 Ã.Drive system
Display messages
Possible causes/consequences and
M MSolutions +
Check Coolant See Check Coolant See
Operator's Manual Operator's Manual The coolant level is too low.
! Avoid making long journeys with too little coolant in the cooling
system. The drive system will otherwise be damaged.
X If the coolant needs topping up more often than usual, have the
cooling system checked at a qualified specialist workshop. #
See See
Operator's
Operator's Man‐
Man‐
ual
ual The 12 V battery is no longer being charged.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the drive system.
X Secure the vehicle against rolling away (Y page 153).
X Do not drive on.
X Do not tow the vehicle.
X Consult a qualified specialist workshop. #
Stop Vehicle See Stop Vehicle See
Operator's Manual Operator's Manual The 12 V battery is no longer being charged and the battery charge
level is too low.
A warning tone also sounds.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the drive system.
X Secure the vehicle against rolling away (Y page 153).
X Do not drive on.
X Do not tow the vehicle.
X Consult a qualified specialist workshop. Display
messages
217On-board computer and displays Z
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High-voltage battery
Display messages
Possible causes/consequences and
M
MSolutions Ý
Battery Reserve Battery Reserve
Level Level The condition of charge of the high-voltage battery has dropped
into the reserve range.
When the remaining range is 0 km, the message appears again.
The power available is then continuously reduced. The reduction in power is represented in the E-CELL display (Y page 183).
X Charge the high-voltage battery. Û
Batterieleistung Batterieleistung
zu gering, Anhal‐ zu gering, Anhal‐
ten, sofort ten, sofort
laden laden(Battery capacity
too low. Stop Charge
immediately) A warning tone also sounds. The E
‑CELL display (Ypage 183) and
the charge level display (Y page 184) go down to 0. The condition
of charge of the high-voltage battery is so low that operation is no
longer possible. The drive system cannot be restarted.
If you then try to restart the drive system, the Batterieleistung Batterieleistung
zu gering, Anhalten, sofort laden
zu gering, Anhalten, sofort laden (Battery capacity too
low. Stop Charge immediately) message appears.
X Park the vehicle and charge the high-voltage battery. ì
Malfunction Visit Malfunction Visit
Workshop Workshop Malfunctions are present in the drive system and/or in the cooling
system.
X Visit an authorized Mercedes-Benz Center. Without starting
Without starting
engine again, con‐ engine again, con‐
sult workshop sult workshop The vehicle's high-voltage electrical system is malfunctioning. A
warning tone also sounds.
X Do not switch off the drive system.
X Visit an authorized Mercedes-Benz Center immediately. ì
Stop Stop
Switch
Switch Engine
Engine
Off
Off There is a serious malfunction in the drive system. A warning tone
also sounds.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Do not tow the vehicle.
X Visit an authorized Mercedes-Benz Center immediately. 218
Display messagesOn-board computer and displays