2015 MERCEDES-BENZ B-CLASS HATCHBACK battery

To avoid hazardous situations, observe the
following:
R Only connect the charging cable to a wall-
box:
- which has been properly installed and
- which has been inspected by a qualified
electrician
R For safety reasons, only use charging
cables that have been tested and approved
by the manufacturer for charging the high-
voltage battery in an electric vehicle.
R Never use damaged charging cables.
R Do not extend the charging cable.
R Never use adapters.
R Observe the safety notes in the operating
instructions for the wallbox.
The vehicle's high-voltage electrical system is
under high voltage.
R Do not handle high-voltage components or
the orange cables of the vehicle's high-volt-
age electrical system.
R Do not touch high-voltage components or the
orange cables of the high-voltage electrical
system when a vehicle has been involved in a
crash.
R Do not touch any damaged components or
damaged orange cables of the vehicle's high-
voltage electrical system.
R Do not remove the covers of the high-voltage
electrical system components that are
marked with a warning sticker. Notes on the charging cable
Handling the charging cable and charg-
ing cable controls Do not leave the charging cable controls
(Y page 140) hanging loose from a mains
socket. Otherwise, this could result in a poor
contact with the mains socket and malfunctions
when charging the vehicle. To ensure that the brackets within the charging
cable controls are not subjected to incorrect
loads, observe the following:
R never lift or carry the controls by the charging
cable connector or the mains plug
R to transport the charging cable, the coiled
part can be:
- wrapped around the controls or
- secured to the housing of the controls
Heat generated by the charging cable
and charging cable connector Observe the important safety notes
(Y
page 134).
During the charging process, the charging cable
and charging cable connector may heat up.
The charging cable and charging cable connec-
tor will only heat up within the permissible lim-
iting values, provided that:
R the mains power supply and the charging
cable are not damaged
R the instructions for handling the charging
cable and controls on the charging cable are
observed
Should the permissible heating temperature lim-
its be exceeded, have the mains power supply
checked.
Protection device against overvoltage !
Voltage surges in the mains supply can dam-
age the vehicle. The vehicle is therefore
equipped with a device which protects it from voltage surges in the mains supply. This
device may be triggered during severe thun-
derstorms, for example, and may lead to the
building's fuse being tripped and an interrup-
tion in the power supply. These functions pro-
tect the vehicle. After the building fuse is
switched on again, the charging process
resumes automatically. Following an interrup-
tion in the power supply without tripping of
the building's fuse, it may take up to
15 minutes for charging to resume automat-
ically.
Switch on the building's fuse again after the
protection device against overvoltage has been triggered. Otherwise, the charging process can-not be continued. The high-voltage battery will
not be charged and you may not be able to drive
the vehicle. High-voltage battery
135Driving and parking Z

If other devices are protected by the same pro-
tective device, these are switched off as well
when the protective device is triggered. Ensure
that these other devices are still operational
after reactivating the protection device. Influences on the charging behaviour
and the charge state of the high-volt-
age battery
Terms of use Observe the following notes:
R information on exceptions and limitations in
warranty documentation and in the related
Service Booklet
R maintenance notes for the high-voltage bat-
tery in the Service Booklet
Operation The vehicle is equipped with a high-voltage bat-
tery for driving. The high-voltage battery stores
the energy needed to operate the electric motor and releases it again.
The electric motor uses energy that has been
stored in the high-voltage battery when pulling
away, accelerating and during the journey.
In overrun mode (except D+), kinetic energy is
converted by means of energy recuperation into
electrical energy and stored in the high-voltage
battery.
The high-voltage battery can be charged as fol-
lows:
R through energy recuperation while the vehicle
is in motion
R with the charging cable at a mains socket
while the vehicle is stationary
R with the charging cable at a charging station/
wallbox while the vehicle is stationary
The high-voltage battery can be charged in a
single-phase nominal voltage range from 100 V to 240 V. The corresponding three-phase nom-
inal voltage range enables charging up to 400 V.
If the charge status drops to less than 13%, the
high-voltage battery reserve indicator lamp
lights up in the instrument cluster. Charge the
high-voltage battery as soon as possible.
Below a charge status of 5%, the performance of the vehicle is reduced. The vehicle's high-volt- age electrical system switches off at a charge
status of 0%.
Use of the pre-entry climate control function
may mean that the high-voltage battery is not
fully charged.
High and low outside temperatures Low outside temperatures
The efficiency of the high-voltage battery is sig-
nificantly reduced at very low outside tempera-
tures. The high-voltage battery is then no longer
able to provide the normal electrical power out- put.
High outside temperatures
To prevent damage to the high-voltage battery
due to very high outside temperatures, the max-imum power output of the high-voltage battery
is reduced automatically.
The E-CELL display indicates the maximum
amount of power available (Y page 173).
Notes on battery care Avoid storing or transporting the vehicle in high
temperatures over a long period (e.g. container
transport).
If you park the vehicle and leave it stationary for longer periods, connect it to a power supply.
Temperatures below Ò25 † and over 40 †,
which affect the vehicle for a period of more
than seven days, can cause irreversible damage.
Discharged battery The vehicle's high-voltage electrical system
switches off if the high-voltage battery is com-
pletely discharged. 30 seconds prior to this, you
are informed of the switch-off by the Battery Battery
level
level too
toolow.
low. Stop
Stopand
andcharge
charge immedi‐
immedi‐
ately
ately message. This protects the battery from
exhaustive discharge.
It is not possible to restart the drive system until after charging.
Do not leave the vehicle parked for longer than
14 days with a high-voltage battery charge sta-
tus below 20%.
You can check the charge status in the charge
level display (Y page 174).
Further information on the "Energy flow display" can be found in the "Trip" menu (Y page 177).136
High-voltage batteryDriving and parking

Energy consumption and range
This range is reduced by:
R high and low outside temperatures
R a non-anticipatory driving style
R switching on consumers, e.g. air-conditioning
system or heating.
The battery's physical characteristics are such
that leaving the vehicle parked for an extended
period at low outdoor temperatures without
charging it can lead to:
R a reduction in battery performance
R longer charge times
In extreme cases, this could mean that the vehi- cle cannot be started. For this reason, connect
the charging cable when leaving the vehicle
parked for long periods at low outdoor temper-
atures.
As a result of its basic characteristics, the
amount of energy available from the high-volt-
age battery decreases over the course of its life.
This reduces:
R the maximum range that can be achieved by
the vehicle
R the maximum output (acceleration) of the
vehicle
You can actively reduce the energy consump-
tion of your vehicle in a number of ways, for
example, by:
R an anticipatory driving style
R reducing the use of electrical consumers
R having the vehicle regularly maintained
The charging time of the high-voltage battery
may change over the course of its life.
Observe the displays on energy usage
(Y page 178) and range (Y page 178).
RANGE PLUS If you activate RANGE PLUS, the operating win-
dow of the battery will be extended at the next
charging process. An extended driving range will
be available to you for the next journey.
Using RANGE PLUS shortens the service life of
the battery. Therefore, only use RANGE PLUS if, for example:
R long journeys are planned or
R the availability of charging stations at the des-
tination is limited The more often RANGE PLUS is used, the more
the extended range is reduced.
Therefore always check the range display for
every journey (Y
page 178). X
To switch on: press button:.
The green indicator lamp lights up.
X To switch off: press button:.
The indicator lamp goes out.
RANGE PLUS switches off automatically if:
R the charging cable is disconnected or
R the charging process is complete
Information on charging with RANGE PLUS
(Y page 184). Displays on energy consumption and
range
Displaying energy consumption and
recuperated electric energy
(COMAND Online /Audio 20) :
Energ y consumption
; Recuperated electric energy
Every bar of the graph displays the average
value for one minute. High-voltage battery
137Driving and parking Z

Energy consumption indicator
:may differ
from the indicator in the From start
From start
(Y page 176) trip computer in the Trip
Trip menu.
Displaying energy consumption and recu-
perated electric energy:
X Switch on Audio 20/COMAND Online (see
the separate operating instructions).
X To select Vehicle
Vehicle from the main function bar:
turn and press the controller.
The vehicle menu appears.
X To select Consumption
Consumption: turn and press the
controller.
Energy consumption :and recuperated
electric energy ;for the last 15 minute s of
the journey are shown.
Exiting the vehicle settings: X Press the %button on the controller.
or X To select %: slide 6and press the con-
troller.
To reset values: the values are reset From
From
start start along with the trip computer
(Y page 178).
Displaying range on the map
(COMAND Online/Audio 20) :
Current vehicle position
; Range
= Range when route guidance is active (dark
blue)
The range can be displayed on the navigation
map for electric vehicles. The range is shown as
a circle around the current vehicle position.
When route guidance is active, the range is also
shown along the calculated route. This is done
by respective colouring of the blue route on the
navigation map. The range display on the Audio 20/
COMAND Online navigation map is available on
the 2D map display and a scale of 2 km to
100 km.
X To switch to navigation mode: press the
ß button.
X To show the menu: slide6the controller.
X To select Options Options: turn and press the con-
troller.
X Select Map content
Map content.
X Select Range on map
Range on map .
Switch the display in the map on Oor off ª.
X To return to navigation mode: Press the
% button on the controller twice.
e-Navigator App (COMAND Online/
Audio 20) :
Current vehicle position
; Route when route guidance is active
= View level displayed: charging stations
(example)
? Range (80%)
A Range (100%)
In addition to a simple circular display of the
range, you can display the range taking desti-
nation accessibility into account. The foreseea-
ble range with destination accessibility is then
coloured in.
When the range is shown in colour, a distinction
is made between two areas:
R Pale area: 100% of range
R Dark area: 80% of range
When route guidance is active, the route is
marked in colour.
The range display with destination accessibility
on the COMAND Online/Audio 20 navigation
map is available on the 2D map display and a
scale of 50 metres to 500 km. 138
High-voltage batteryDriving and parking

Displaying the range and destination acces-
sibility via navigation mode:
X To switch to navigation mode: press the
ß button.
The map displays the current vehicle position.
or
X From one of the other main functions: slide
5 the controller (e. g. in radio mode).
The main function bar is displayed.
X To select Navi
Navi from the main function bar:
turn and press the controller.
The map displays the current vehicle position.
X To call up e-Navigator: press theßbut-
ton.
X To select Range on map Range on map in the navigation
menu: turn and press the controller.
The range and destination accessibility are
displayed on the navigation map.
To display the range and destination acces-
sibility via Mercedes-Benz Apps:
X Switch on COMAND Online/Audio 20 (see
the separate operating instructions).
X Set access data and connect to the Internet
(see separate operating instructions)
X To call up the telephone menu: press the
% button.
X To switch to the main function bar: slide 5
the controller.
X To select TEL/
TEL/®: press the controller.
X To select Internet
Internet: turn and press the con-
troller.
The menu with the Internet functions is dis-
played.
X To select Mercedes-Benz Apps
Mercedes-Benz Apps: turn and
press the controller.
The available Mercedes-Benz Apps Mercedes-Benz Apps are dis-
played.
X To call up the e-Navigator App: turn and
press the controller.
The navigation map is displayed showing the
range and destination accessibility
Showing the view levels on the map:
X To display the menu: slide6and press
the controller when the map appears.
The menu of the view levels opens. You may
choose from the following view levels: R
available charging stations
R current route
R current vehicle position with vehicle direc-
tion
Exiting the map display:
X Press the %button on the controller.
or
X To select %: slide 6and press the con-
troller. Charging the high-voltage battery via
the mains socket
Charging cable Important safety notes
! Only use the charging cable to charge the
high-voltage battery. Do not use the charging
cable for other purposes. It may otherwise be damaged.
The vehicle is supplied with a three-phase 32 A
charging cable. A single-phase 13 A charging
cable (Switzerland: 16 A) can be optionally
ordered.
When charging the vehicle using the mains
socket, use the single-phase 13 A (Switzerland:
16 A) charging cable.
Observe the "Important safety notes"
(Y page 134).
If you use the supplied 13 A charging cable
(Switzerland: 16 A) as opposed to the 32 A
charging cable to charge the high-voltage bat-
tery:
R the charge time increases considerably
R electrical consumption increases considera-
bly
For this reason, always charge the high-voltage
battery from a wallbox (Y page 142) or at a
charging station (Y page 142). Only then can
certified electrical energy consumption levels
be reached.
i The charging process can vary depending on
the charging station. Therefore, always
observe the local information. High-voltage battery
139Driving and parking Z

Stowing the charging cable
The charging cable can be stowed in a bag in the
boot of the vehicle. To do so, the bag must be
secured to the lashing eyelets using the retain-
ing strap provided.
Controls on the charging cable :
A/C status indicator
; Control/protection system indicator
= Charge current indicator
? Charge current setting button
When displays :and ;on the charging cable
light up, this means the following: Display
:
: Lights up
green The external mains supply
connection is working prop-
erly. The high-voltage battery
can be charged.
Flashes red A fault has been detected in
the external mains supply.
The high-voltage battery is
recharged as soon as the
electricity signal registers
normal values.
Lights up red There is a malfunction. The
charging cable must be
removed from the mains
socket and then re-inserted.
Display
; ; Lights up
green There are no faults. The high-
voltage battery can be
charged.
Lights up red There is a malfunction. The
high-voltage battery cannot
be charged. For information on problems relating to the
charging process, see (Y
page 144).
Setting the maximum charge current G
WARNING
If the charge current draw via a mains socket is too high during the charging process, the
external mains supply may overheat. There isa risk of fire.
Before charging, check the maximum permis-
sible charge current available at the location.
If necessary, contact a qualified specialist
company for assistance.
Adjust your vehicle's settings, if necessary.
! If the charge current is too high, the fuse
could be tripped or the external mains supply could overheat. Check if the external mains
supply is equipped to handle the programmed charge current. If necessary, reduce the pro-
grammed charge current or use a different
mains socket.
You can set a limit for the values of the charge
current used in charging the high-voltage bat-
tery. This acts as a means of preventing the
mains supply from overloading. You can set this
limit by using the controls on the charging cable
or in the on-board computer's menu. Only set
the maximum charge current in the on-board
computer menu if there are no charge current
settings on the charging cable.
The default standard value is the minimum
charge current setting. This corresponds to the
minimum available charge current from the
mains supply.
i The value of the maximum setting and the
relevant adjustment values may vary depend-
ing on the country.
Before charging the high-voltage battery, have
the maximum permissible charge current for the relevant power socket checked by an electri-
cian.
X To adjust the setting: press button?
repeatedly until the desired setting is selec-
ted in display =.
R Two LEDs are flashing: minimum setting
R All LEDs are flashing: maximum setting
Information about the charging time
(Y page 284) 140
High-voltage batteryDriving and parking

If, after the charging process, the charging cable
is:
R left connected to the power socket, the cur-
rently selected values will be used for the next
charging process.
R removed from the power socket, the values
will be reset to the minimum setting for the
next charging process. You may then need to reset the values of the maximum charge cur-
rent.
If the charge current values that have been set
on the charging cable and the on-board com-
puter are different, the high-voltage battery is
charged using the lower value.
If the vehicle requires more time than usual to
charge the high-voltage battery, check:
R the settings of the maximum charge current
on the controls of the charging cable
R the settings of the maximum charge current in
the menu of the on-board computer
Indicator lamps on the vehicle socket When the indicator lamps on the vehicle socket
light up, this means the following: Left indicator lamp
Ì Ì Lights up The charging cable can be
connected or removed.
Flashes The charging cable connector
has been connected incor-
rectly. Right indicator lamp
Ý ÝFlashes
slowly in
orange The connection between the
vehicle and the current
source is being established
before charging begins.
Flashes
slowly in
green The high-voltage battery is
charging.
Lights up
green The high-voltage battery is
fully charged.
Flashes rap-
idly in red A malfunction has occurred
while charging. Connecting the charging cable
:
To open the charge socket flap
; Tyre pressure table
= Socket cap
? Reference sticker (voltage range)
A Left indicator lamp Ì
B Right indicator lamp Ý
C Vehicle socket
D Warning sticker (charging cable)
X Shift the DIRECT SELECT lever to position P.
X Switch the ignition off.
X Press the charge socket flap in the direction
of arrow :.
The charge socket flap swings up.
X Remove socket cap =from vehicle socket
C.
X Insert the mains plug into the mains socket to
the stop.
X Insert the charging cable connector into vehi-
cle socket Cto the stop.
The high-voltage battery is charging.
The Ý right indicator lamp Bon vehicle
socket Cflashes green.
The vehicle must not be moved while the charg- ing cable is connected or during charging. High-voltage battery
141Driving and parking Z

i
Depending on the temperature, the engine
cooling system and battery cooling system
may audibly switch on when the charging
cable is connected or during the charging
process.
Removing the charging cable !
Before driving away, you must ensure that,
for your own safety and to avoid damage, the charging cable has been removed from the
vehicle socket. Otherwise, you cannot shift
the transmission out of position P.
When the charge level display reaches 100%,
the battery is fully charged (Y page 174).
The indicator lamps in the vehicle socket and on the charging cable may stay on for up to
30 seconds after the charging cable has been
disconnected.
When the battery is charged:
X Unlock the vehicle.
The Ý right indicator lamp Bon vehicle
socket Cgoes out. The Ìleft indicator
lamp Aon vehicle socket Clights up white.
X Remove the charging cable from vehicle
socket Cwithin 30 second s. Otherwise the
vehicle will relock the vehicle socket.
X Close socket cap =.
X Close the charge socket flap.
X Remove the charging cable from the mains
socket.
X Stow the charging cable safely in the vehicle
(Y page 140).
If the charging cable cannot be removed from
the vehicle socket, unlock the charge socket
flap manually using the emergency release
(Y page 143). Charging a high-voltage battery at a
charging station/wallbox
General notes When charging your vehicle from a wallbox, use
the three-phase 32 A charging cable supplied.
The charging cable is stored in a bag in the boot.
Only use charging cables that have been tested
and approved by the manufacturer for charging
the high-voltage battery in an electric vehicle.
Observe the "Important safety notes"
(Y page 134). Charging communication at a charging
station The charging station first has to be activated
before you can charge at a charging station. You
can activate the charging station by using an
RFID card or via telephone activation. Observe
the on-site operator instructions for the charg-
ing station.
When the vehicle is connected to the charging
station, information and details on technical
parameters are exchanged. It can thus take up
to 30 seconds for the charging process to begin.
Connecting the charging cable :
To open the charge socket flap
; Tyre pressure table
= Socket cap
? Reference sticker (voltage range)
A Left indicator lamp Ì
B Right indicator lamp Ý
C Vehicle socket
D Warning sticker (charging cable)
X Shift the DIRECT SELECT lever to position P.
X Switch the ignition off. 142
High-voltage batteryDriving and parking