2017 MERCEDES-BENZ B-Class Motor

i
The
Energy Flow
Energy Flow menu can also be dis-
played in the COMAND/Audio display.
The condition of charge of the high-voltage bat- tery has dropped into the reserve range if the
drive system is running and:
R the Drive Battery Reserve Level
Drive Battery Reserve Level mes-
sage appears in the display
R the indicator lamp in the instrument cluster
lights up
Charge the high-voltage battery from a condi-
tion of charge of less than 20% at:
R an electrical outlet
R a charging station
The braking performance of the electric motor
using recuperative braking is, in some operating
modes, either reduced or not effective:
R when the condition of charge of the high-volt-
age battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
R when the vehicle is almost stationary
R in transmission position N
R during and after ESP stability control
If you do not make an additional effort to apply
the brake yourself, the braking effect may not be
sufficient. If necessary, counteract the reduced regenerative braking effect by applying the
brake yourself. Operating the on-board computer
Overview 0043
Multifunction display
0044 Vehicles with Audio 20: switches on voice-
operated control for navigation (see manu-
facturer's operating instructions)
Vehicles with COMAND: switches on the
Voice Control System (see the separate
operating instructions)
0087 Right control panel
0085 Left control panel
0083 Back button
X To activate the on-board computer: turn
the SmartKey to position 1in the ignition lock.
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel. 154
Displays and operationOn-board computer and displays

Safety systems
Display messages
Possible causes/consequences and
0050
0050Solutions 002500E5
Currently Unavaila‐
Currently Unavaila‐
ble See Operator's ble See Operator's
Manual Manual ABS (Anti-lock Braking System), BAS (Brake Assist), ESP
®
(Electronic
Stability Program), the HOLD function, RBS (Recuperative Brake Sys- tem) and hill start assist are temporarily unavailable.
Active Brake Assist may have also failed.
The 0025, 00E5,00BBand00C6 (USA only) or 004D(Canada only)
warning lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
Possible causes are:
R Self-diagnosis is not yet complete.
R The on-board voltage may be insufficient.
G WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a short distance on a suitable stretch of road, making
slight steering movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned above are available again.
If the multifunction display still shows the display message:
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 002500E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual ABS, BAS, ESP
®
, the HOLD function, RBS and hill start assist are not
available due to a malfunction.
Active Brake Assist may have also failed.
The 0025, 00E5,00BB,00C6(USA only) or 004D(Canada only) and
0027 (USA only) or 004D(Canada only) warning lamps in the instru-
ment cluster may also light up.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself. 168
Display messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 00E5
Currently Unavaila‐ Currently Unavaila‐
ble See Operator's ble See Operator's
Manual Manual ESP
®
, BAS, the HOLD function, RBS and hill start assist are tempora-
rily unavailable.
Active Brake Assist may have also failed.
The , 00E5, 00BBand00C6 (USA only) or 004D(Canada only) warning
lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
The self-diagnosis function might not be complete, for example.
G WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned above
are available again.
If the multifunction display still shows the display message: X Drive on carefully.
X Visit a qualified specialist workshop immediately. Display messages
169On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00E5
Currently Unavaila‐ Currently Unavaila‐
ble See Operator's ble See Operator's
Manual Manual ESP
®
, BAS, the HOLD function, RBS and hill start assist are not avail-
able due to a malfunction.
Active Brake Assist may have also failed.
The , 00E5, 00BBand00C6 (USA only) or 004D(Canada only) warning
lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 007A0025
00E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual EBD (electronic brake force distribution), ABS, BAS, ESP
®
, the HOLD
function, RBS and hill start assist are not available due to a malfunc-
tion.
Active Brake Assist may have also failed.
A warning tone sounds.
The 00E5, 00BB, 0025and00C6 (USA only) or 004D(Canada only)
warning lamps in the instrument cluster may also light up.
G WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore lock
if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 170
Display
messagesOn-board computer and displays

Safety systems
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00C6004D
0051
The yellow brake system warning lamp is lit while the drive system is running.
00C6 (USA only) 004D(Canada only): the yellow RBS/brake system warning lamp
is lit while the drive system is running.
The brake system is malfunctioning.
G WARNING
The braking characteristics may be affected.
There is a risk of an accident.
X Drive on taking extra care.
X Visit a qualified specialist workshop immediately. 00C6004D
0051
00C6 (USA only), 004D(Canada only): the yellow RBS/brake system warning
lamp is lit while the drive system is running.
RBS (Recuperative Brake System) is unavailable due to a malfunction.
G WARNING
The braking performance of the electric motor using recuperative braking may be
either reduced or not effective. If you do not make an additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract
the reduced regenerative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the function listed
above.
The braking effect may be impaired.
X Drive on taking extra care.
X Visit a qualified specialist workshop immediately. 0027004D
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp is lit
while the drive system is running. A warning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics may be
affected.
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. Do not continue driving under any circumstances.
X Secure the vehicle against rolling away (Y page 128).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display. 192
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 0027004D
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp is lit
while the drive system is running. A warning tone also sounds.
There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
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. Do not continue driving under any circumstances.
X Secure the vehicle against rolling away (Y page 128).
X Do not add brake fluid. Adding more will not correct the malfunction.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display. 0025
00E500BB
00C6004D
0051
00C6 (USA only), 004D(Canada only): the yellow ABS, ESP ®
, ESP ®
OFF and
RBS/brake system warning lamps are lit while the drive system is running.
ABS (Anti-lock Braking System) is deactivated due to a malfunction. BAS (Brake
Assist), Active Brake Assist, ESP ®
(Electronic Stability Program), RBS, the HOLD
function and hill start assist are also deactivated, for example.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative braking may be
either reduced or not effective. If you do not make an additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract
the reduced regenerative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the functions listed
above. The wheels could therefore lock if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately.
If the ABS control unit is malfunctioning, other systems may also not be available, e.g. the navigation system. Warning and indicator lamps in the instrument cluster
193On-board computer and displays Z

Warning/
indicator
lamp
0051
0051 Signal type
Possible causes/consequences and 0050 0050Solutions 0025
00E500BB
00C6004D
0051
00C6 (USA only), 004D(Canada only): the yellow ABS, ESP ®
, ESP ®
OFF and
RBS/brake system warning lamps are lit while the drive system is running.
ABS is temporarily unavailable. BAS, Active Brake Assist, ESP ®
, EBD (Electronic
Brake-force Distribution), the HOLD function and hill start assist are also deacti-
vated, for example.
Possible causes are:
R Self-diagnosis is not yet complete.
R The on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative braking may be
either reduced or not effective. If you do not make an additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract
the reduced regenerative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels could therefore lock if you brake hard, for exam- ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is a risk of an accident.
X Carefully drive a suitable distance, making slight steering movements at a speed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on: X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 194
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 0025
00E500BB
00C6004D
0051
00C6 (USA only), 004D(Canada only): the yellow ABS, ESP ®
, ESP ®
OFF and
RBS/brake system warning lamps are lit while the drive system is running.
EBD is malfunctioning. Therefore, ABS, BAS, Active Brake Assist, ESP ®
, RBS, the
HOLD function and hill start assist, for example, are also unavailable.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative braking may be
either reduced or not effective. If you do not make an additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract
the reduced regenerative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels could therefore lock if you brake hard, for exam- ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 0025
00E500BB
0027004D
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp and
the yellow ABS, ESP ®
and ESP ®
OFF warning lamps are lit while the drive system
is running.
ABS and ESP ®
are malfunctioning. BAS, RBS, Active Brake Assist, EBD, the HOLD
function and hill start assist, for example, are also unavailable.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative braking may be
either reduced or not effective. If you do not make an additional effort to apply the brake yourself, the braking effect may not be sufficient. If necessary, counteract
the reduced regenerative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels could therefore lock if you brake hard, for exam- ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. Warning and indicator lamps in the instrument cluster
195On-board computer and displays Z