2015 MERCEDES-BENZ B-Class ELECTRIC charging

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 25). Notes on breaking-in a new vehicle
The sensor system of some driving and driv-
ing safety systems adjusts automatically
while a certain distance is being driven after
the vehicle has been delivered or after
repairs. Full system effectiveness is not
reached until the end of this teach-in proce-
dure.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate for this by applying greater force to the
brake pedal. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Before driving away, you must ensure
that, for your own safety and to avoid dam-
age, the charging cable has been removed
from the vehicle socket. Otherwise, you
cannot shift the transmission out of posi-
tion P.
The braking performance of the electric
motor using recuperative braking is, in some
operating modes, either reduced or not effec-
tive:
R when the condition of charge of the high-
voltage battery increases
R if the high-voltage battery is not yet at a
normal operating temperature
R when driving close to the maximum speed
R when the vehicle is almost stationary 130
DrivingDriving and parking

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, counter-
act the reduced regenerative braking effect
by applying the brake yourself.
Before commencing your journey, ensure that the charging cable required for charging the
high-voltage battery is in the vehicle. Key positions
SmartKey g
To remove the SmartKey
(shift the transmission to position P)
1 Power supply for some consumers, such
as the windshield wipers
2 Ignition (power supply for all consumers)
and drive position
3 To start the engine
i The SmartKey can be turned in the igni-
tion lock even if it is not the correct Smart- Key for the vehicle. The ignition is not
switched on. The drive system cannot be
started.
Start/Stop button General notes
Vehicles with KEYLESS-GO are equipped with
SmartKeys featuring the integrated KEYLESS- GO function and a detachable Start/Stop but-
ton. A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart- Key is in the vehicle. This occurs, for example,
when starting the drive system.
When you insert the Start/Stop button into
the ignition lock, the system needs approx-
imately two seconds recognition time. You
can then use the Start/Stop button.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button, the drive system starts
immediately.
To start the vehicle without actively using the SmartKey:
R the Start/Stop button must be inserted in
the ignition lock.
R the SmartKey must be in the vehicle.
R the vehicle must not be locked with the
SmartKey or KEYLESS-GO (Y page 73).
Do not keep the KEYLESS-GO key:
R with electronic devices, e.g. a mobile
phone or another SmartKey.
R with metallic objects, e.g. coins or metal
foil.
R inside metallic objects, e.g. a metal case.
This can affect the functionality of KEYLESS-
GO.
If you lock the vehicle with the SmartKey's
remote control or with KEYLESS-GO, after a
short time:
R you will not be able to switch on the ignition
with the Start/Stop button.
R you will not be able to start the drive system
with the Start/Stop button until the vehicle is unlocked again.
If you lock the vehicle centrally using the but-
ton on the front door (Y page 80), you can
continue to start the drive system with the
Start/Stop button. Driving
131Driving and parking Z

drop down. You can open the doors from the
inside at any time.
It is only possible to move the DIRECT SELECT
selector lever from position Pto the desired
selector lever position if you depress the
brake pedal. The parking lock is then deacti-
vated and the electrical parking brake is
released automatically. If the brake pedal is
not depressed, the DIRECT SELECT lever can still be moved but the parking lock remains
engaged.
Make sure that no charging cable is plugged
in. The parking lock cannot be released if a
charging cable is plugged in. Hill start assist
Hill start assist will aid you when pulling away
on a hill. It holds the vehicle for a short time
after you have removed your foot from the
brake pedal. This gives you enough time to
move your foot from the brake pedal to the
accelerator pedal and depress it before the
vehicle begins to roll. G
WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if: R you are pulling away on a level road or on a
downhill gradient.
R the DIRECT SELECT lever is in position N.
R the electric parking brake is applied.
R ESP ®
is malfunctioning.
Further information on holding the vehicle
stationary on uphill gradients (Y page 137). Transmission
Important safety notes
Shift the DIRECT SELECT lever to position P
when the drive system is switched off and the
vehicle is stationary. Park position Pis
engaged and the electric parking brake is
applied automatically:
If the DIRECT SELECT lever cannot be
engaged in park position P, the parking brake
is engaged automatically.
Observe the important safety notes on
switching ESP ®
on and off (Y page 67). DIRECT SELECT lever
Overview of transmission positions j
Park position with parking lock
k Reverse gear
i Neutral
h Drive
The DIRECT SELECT lever is on the right of the
steering column.
The DIRECT SELECT lever always returns to
its original position. The current transmission position P,R, Nor Dappears in the transmis-
sion position display in the multifunction dis- play (Y page 134).
Transmission position and drive pro-
gram display !
If the transmission position display in the
multifunction display is not working, you 134
TransmissionDriving and parking

In particular, the function of the radar sensors
can be impaired in the case of:
R there is dirt on the sensors or anything else
covering the sensors
R there is snow or heavy rain
R there is interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
If the radar sensors are not available, the sys-
tem switches automatically to level Dwith
moderate recuperation. Have the radar sen-
sors checked at a qualified specialist work-
shop.
Automatic adjustment of recuperation
on downhill gradients The vehicle can detect steep downhill gradi-
ents. To reduce acceleration downhill and to
charge the high-voltage battery, recuperation is increased steplessly. This is comparable to
the engine brake in a combustion engine
when you downshift a gear on a downhill gra- dient.
Automatic adjustment of recuperation on
downhill gradients is available in level DAUTO
or on vehicles without steering wheel paddle
shifters in level D.
Intelligent recuperation The vehicle uses the map and camera data of
Traffic Sign Assist in addition to the sensors
of COLLISION PREVENTION ASSIST PLUS
during radar-based recuperation (D AUTO
). The
rate of recuperation is then automatically adjusted to the current traffic situation, tak-
ing the current and future maximum speed
into account. High-voltage battery
Important safety notes
G
DANGER
The vehicle's high voltage electrical system is under high voltage. If you modify components
in the vehicle's high-voltage electrical system or touch damaged components, you may be
electrocuted. The components in the vehi-
cle's high-voltage electrical system may be
damaged in an accident, although the damage
is not visible. There is a risk of fatal injury.
Following an accident, do not touch any high- voltage components and never modify the
vehicle's high-voltage electrical system. Have
the vehicle towed away after an accident and the vehicle's high-voltage electrical system
checked by a qualified specialist workshop. G
WARNING
In the event of a vehicle fire, the internal pres- sure of the high-voltage battery can exceed a
critical value. In this case flammable gas
escapes through a ventilation valve on the
underbody. The gas can ignite. There is a risk of injury.
Leave the danger zone immediately. Secure
the danger area at a suitable distance, whilst
observing legal requirements. G
DANGER
If you use incorrectly installed mains sockets or adapters, extension cables or similar to
connect the charging cable to a mains socket,
this could lead to fires or an electric shock.
There is a risk of fatal injury. 140
High-voltage batteryDriving and parking

To avoid hazardous situations, observe the
following:
R Only connect the charging cable to mains
sockets that:
- are installed correctly and
- have been approved by an electrical spe-
cialist.
R For safety reasons, only use the charging
cables supplied with the vehicle, or charg-
ing cables which have been approved for
use with this vehicle.
R Never use a damaged charging cable.
R Do not use:
- Extension cables
- Cable drums
- Multiple sockets
R Do not use a socket adapter to connect the
charging cable to the mains socket. The
only exception is if the adapter has been
tested and approved by the manufacturer
for charging the high-voltage battery in an
electric vehicle.
R Always observe the safety notes in the
socket adapter's operating instructions.
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 elec-
trical 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-volt-
age electrical system components that are
marked with a warning sticker. General notes
Method of operation The vehicle is equipped with a high-voltage
battery for driving. The high-voltage battery
stores the energy needed to operate the elec-
tric motor and releases it again.
The electric motor uses energy that has been stored in the high-voltage battery when pull-
ing away, accelerating and during the jour-
ney.
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
follows:
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 sta-
tion while the vehicle is stationary
The high-voltage battery can be charged in a
voltage range from 110 V to 240 V.
If the condition of charge drops to less than
13%, the high-voltage battery reserve indica-
tor lamp lights up in the instrument cluster.
Charge the high-voltage battery as soon as
possible.
Below a condition of charge of 5%, the per-
formance of the vehicle is reduced. The vehi-
cle's high-voltage electrical system switches
off at a condition of charge of 0%.
Use of the pre-entry climate control function
may mean that the high-voltage battery is not fully charged.
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 level too low. Stop and Battery level too low. Stop and High-voltage battery
141Driving and parking Z

charge immediately
charge immediately
message. This pro-
tects 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 con-
dition of charge below 20%.
You can check the condition of charge in the charge level display (Y page 184).
Further information on the "Energy flow dis-
play" can be found in the "Trip" menu
(Y page 187).
High and low outside temperatures Low outside temperatures
The efficiency of the high-voltage battery is
significantly reduced at very low outside tem-
peratures. The high-voltage battery is then no longer able to provide the normal electrical
power output.
High outside temperatures
To prevent damage to the high-voltage bat-
tery due to very high outside temperatures,
the maximum power output of the high-volt-
age battery is reduced automatically.
The E-CELL display indicates the maximum
amount of power available (Y page 183).
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-condition-
ing 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
vehicle cannot be started. For this reason,
connect the charging cable when leaving the vehicle parked for long periods at low outdoor
temperatures.
As a result of its basic characteristics, the
amount of energy available from the high-
voltage 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.
Displaying energy consumption and
recuperated electric energy (COMAND/ Audio 20) :
Energy consumption
; Recuperated electric energy
Every bar of the graph displays the average
value for one minute.
Energy consumption indicator :may differ
from the indicator in the From Start From Start
(Y page 187) trip computer in the Trip
Trip
menu. 142
High-voltage batteryDriving and parking

e-Navigator App (COMAND)
:
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 des-
tination accessibility into account. The fore-
seeable range with destination accessibility is
then colored in.
When the range is shown in color, a distinc-
tion 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 color.
The range display with destination accessi-
bility on the COMAND navigation map is avail-
able on the 2D map display and at a scale of
50 meters to 500 km.
Displaying the range and destination
accessibility via Mercedes-Benz Apps:
X Switch on COMAND (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
controller.
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
displayed.
X To select 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
direction
Exiting the map display: X Press the %button on the controller.
or
X To select %: slide 6and press the
controller.
RANGE PLUS If you activate RANGE PLUS, the operating
window 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
destination is limited
The more often RANGE PLUS is used, the
more the extended range is reduced.
Therefore always check the range display
before every journey (Y page 188).144
High-voltage batteryDriving an
d parking

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 196).
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 sup-
ply.
Temperatures below Ò13‡(Ò25 †) and over
104 ‡ (40 †), which affect the vehicle for a
period of more than seven days, can cause
irreversible damage.
Conditions of use Observe the following notes:
R information on exceptions and limitations
in warranty documentation and in the rela-
ted Maintenance Booklet
R maintenance notes for the high-voltage
battery in the Maintenance Booklet Handling the charging cable and charg-
ing cable controls Do not leave the charging cable controls
(Y page 146) hanging loose from an electrical
outlet. Otherwise, this could result in a poor
contact with the electrical outlet and mal-
functions when charging the vehicle.
To ensure that the brackets within the charg- ing cable controls are not subjected to incor-
rect loads, observe the following:
R Never lift or carry the controls by the charg-
ing 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 Pay attention to the "Important safety notes"
(Y page 140).
During the charging process, the charging
cable and charging cable connector may heat
up.
The charging cable and charging cable con-
nector will only heat up within the permissible
limiting values, provided that:
R the 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
limits be exceeded, have the mains power
supply checked.
Protection device against overvoltage !
Voltage surges in the mains supply can
damage the vehicle. The vehicle is there-
fore equipped with a device which protects
it from voltage surges in the mains supply.
This device may be triggered during severe
thunderstorms, for example, and may lead
to the building's fuse being tripped and an High-voltage battery
145Driving and parking Z