2016 MERCEDES-BENZ B-Class ELECTRIC ECU

Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. This can be useful if you wish
to lock the vehicle before pulling away, for
example.
XTo unlock:press button :.
XTo lock:press button ;.
If all the doors and the tailgate are closed,
the vehicle locks.
This does not lock or unlock the charge
socket flap.
You cannot unlock the vehicle centrally from
the inside if the vehicle has been locked with
the SmartKey or KEYLESS-GO.
You can open a door from inside the vehicle
even if it has been locked. You can open the
rear doors from inside the vehicle unless they
are secured by the child-proof lock
(
Ypage 61).
If the vehicle has previously been locked with
the SmartKey from the outside, opening a
door from the inside will trigger the anti-theft
alarm system. Switch off the alarm
(
Ypage 69).
If a locked door is opened from the inside, the previous unlock status of the vehicle will be
taken into consideration if:
Rthe vehicle was locked using the locking
button for the central locking, or
Rif the vehicle was locked automatically
The vehicle will be fully unlocked if it had pre-
viously been fully unlocked. If only the driver's
door had been previously unlocked, only the door which has been opened from the inside
is unlocked.
Automatic locking feature
XTo deactivate:
press and hold button :
for approximately five seconds until a tone sounds.
XTo activate: press and hold button ;for
approximately five seconds until a tone
sounds.
If you press one of the two buttons and do not
hear a tone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning.
You could therefore lock yourself out if:
Rthe vehicle is being pushed.
Rthe vehicle is being towed.
Rthe vehicle is on a roller dynamometer.
You can also switch the automatic locking
function on and off using the on-board com-
puter (
Ypage 198).
Unlocking the driver's door (mechan-
ical key)
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered (
Ypage 69).
80Doors
Opening and closing

XTake the mechanical key out of the Smart-
Key (
Ypage 74).
XInsert the mechanical key into the lock of
the driver's door as far as it will go.
XTurn the mechanical key counter-clockwise
as far as it will go to position1.
The door is unlocked.
XTurn the mechanical key back and remove
it.
XInsert the mechanical key into the Smart-
Key (
Ypage 75).
Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey or KEYLESS-GO, use the mechani-
cal key.
XOpen the driver's door.
XClose the front-passenger door, the rear
doors and the tailgate.
XPress the locking button on the driver’s
door (
Ypage 80).
XCheck whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs by hand, if necessary.
XClose the driver's door.
XTake the mechanical key out of the Smart-
Key (
Ypage 74).
XInsert the mechanical key into the lock of
the driver's door as far as it will go.
XTurn the mechanical key clockwise as far as
it will go to position 1.
XTurn the mechanical key back and remove
it.
XMake sure that the doors and the tailgate
are locked.
XInsert the mechanical key into the Smart-
Key (
Ypage 75).
iIf you lock the vehicle as described above,
the charge socket flap is not locked. The
anti-theft alarm system is not armed.
Cargo compartment
Important safety notes
GWARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(
Ypage 338).
Cargo compartment81
Opening and closing
Z

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.
iRead the information on qualified special-
ist workshops (
Ypage 26).
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
GWARNING
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.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
GWARNING
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.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
Roverheat and cause a fire
Rlose 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:
Rwhen the condition of charge of the high-
voltage battery increases
Rif the high-voltage battery is not yet at a
normal operating temperature
Rwhen driving close to the maximum speed
Rwhen the vehicle is almost stationary
130Driving
Driving and parking

Drive program S (Sport)
Drive programSis characterized by the fol-
lowing:
Rth e vehicle exhibits sporty driving charac-
teristics .
Rthe entire power output can be utilized by
depressing the accelerator pedal.
E+ Economy Plus
Drive program E+is characterized by the fol-
lowing:
Rreduced torque and significantly reduced
power. This supports an especially efficient
and even driving style and results in a
reduction in speed to approximately
70 mph (110km/ h).
Rthe vehicle pulling away more gently in
forward gear unless the accelerator pedal
is depressed fully.
Rthe wheels are less likely to spin.
Rparticularly efficient overrun.
Rfull power output by using kickdown.
Rthe performance of air-conditioning system
and heating are reduced.
Steering wheel paddle shifters
Manually adjustable recuperation
:Left-hand steering wheel paddle shifter -
;Right-hand steering wheel paddle shifter
+ You can increase or reduce recuperation in
overrun mode using the steering wheel pad-
dle shifters. When you remove your foot from
the accelerator pedal, recuperation occurs.
The electric motor is then used as a alternator
and energy is recovered while driving. The
recuperated electrical energy is stored in the
high-voltage battery. A higher energy recu-
peration level means that the vehicle is
braked more powerfully.
If necessary, counteract the reduced regen-
erative braking effect by applying the brake
yourself.
Information on the Recuperative Braking Sys-
tem (
Ypage 68).
XTo decrease recuperation:
pull right-hand
steering wheel paddle shifter ;.
XTo increase recuperation:pull left-hand
steering wheel paddle shifter :.
The various recuperation levels are shown in
the transmission position display once Dhas
been selected (
Ypage 134).
The following recuperation levels are availa-
ble in overrun mode:
Rno recuperation (D+, coasting mode)
Rmoderate recuperation (D )
Rhigh recuperation (D-)
Rrecuperation depending on the traffic sit-
uation (DAUTO, radar-based)
You can see the intensity of recuperation in
overrun mode by reading the recuperation
performance value shown in the power dis-
play (
Ypage 183).
Every time drive position Dis selected, the
transmission switches into recuperation level
D
AUTOautomatically.
138Transmission
Driving and parking

The various different levels are to be used
under the following conditions:
D+Driving without much braking
and without the presence of
obstacles or sharp bends
The vehicle retains the maxi-
mum possible amount of kinetic
energy.
DNormal driving
D-Sporty driving or driving on a
downhill gradient
The brake pedal does not need
to be used as often because the
extent of the deceleration is
greater than inD.
Energy use when decelerating is
considerably higher than when
the vehicle is braked with the
brake pedal.
DAUTO
(radar-
based)
The intensity of recuperation is
automatically adjusted to the
current traffic situation.
Default setting
In levels Dand D-, deceleration can be con-
trolled in an infinitely variable manner using
the accelerator pedal.
The braking performance of the electric
motor using recuperative braking is, in some
operating modes, either reduced or not effec-
tive:
Rwhen the condition of charge of the high-
voltage battery increases
Rif the high-voltage battery is not yet at a
normal operating temperature
Rwhen driving close to the maximum design
speed
Rwhen the vehicle is almost stationary
Rin transmission position N
Rduring 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.
Radar-based recuperation
The vehicle uses the sensors of COLLISION
PREVENTION ASSIST PLUS during radar-
based recuperation (D
AUTO). The sensors
detect the distance to the vehicle ahead and
its speed. The intensity of recuperation is
then automatically adjusted to the current
traffic situation.
The range can then be increased by storing
energy efficiently. Adjustment is infinitely var-
iable from overrun mode (no recuperation) to
maximum recuperation.
Maintain sufficient distance to the vehicle in
front. Mercedes-Benz recommends that you
activate COLLISION PREVENTION ASSIST
PLUS as a visual and acoustic aid.
Examples of radar-based recuperation:
RApproaching a slower vehicle, a decelerat-
ing vehicle or when following a vehicle
downhill. Your vehicle decelerates slightly
and increases recuperation.
RDriving when no vehicle is detected in front
or when a vehicle is detected in the far dis- tance or an accelerating vehicle is detec-
ted. Your vehicle switches to overrun mode
at higher speeds.
RDriving on a steep downhill slope. Acceler-
ation downhill is reduced and recuperation
is increased. This is comparable with shift-
ing down when driving downhill.
XTo activate radar-based recuperation:
pull steering wheel paddle shifter :or;
towards you and hold for about one second.
XTo deactivate radar-based recupera-
tion: briefly pull steering wheel paddle
shifter :or; towards you.
Transmission139
Driving and parking
Z

If you change between radar-based and man-
ual recuperation, the following levels are acti-
vated depending on the selection via the
steering wheel paddle shifters:
:Steering
wheel paddle
shifter -selects D-(maximum
recuperation)
; Steering
wheel paddle
shifter +selects D+(overrun)
In particular, the function of the radar sensors
can be impaired in the case of:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is snow or heavy rain
Rthere is interference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra 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 radar sensor settings and oper-
ation checked at a qualified specialist work-
shop immediately. 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 immediately.
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
D
AUTO
or on vehicles without steering wheel paddle
shifters in levelD.
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
GDANGER
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.
GWARNING
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.
140High-voltage battery
Driving and parking

To ensure that the brackets within the charg-
ing cable controls are not subjected to incor-
rect loads, observe the following:
RNever lift or carry the controls by the charg-ing cable connector or the mains plug.
RTo 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
(
Ypage 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:
Rthe power supply and the charging cable
are not damaged
Rthe 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
interruption in the power supply. These
functions protect the vehicle. After the
building fuse is switched on again, the
charging process resumes automatically.
Following an interruption in the power sup- ply without tripping of the building's fuse, it may take up to 15 minutes for charging to
resume automatically.
Switch on the building's fuse again after the
protection device against overvoltage has
been triggered. Otherwise, the charging proc-
ess cannot be continued. The high-voltage
battery will not be charged and you may not
be able to drive the vehicle.
If other devices are protected by the same
protective 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 behavior
and the charge state of the high-volt-
age battery
Terms of use
Observe the following notes:
Rinformation on exceptions and limitations
in warranty documentation and in the rela-
ted Maintenance Booklet
Rmaintenance notes for the high-voltage
battery in the Maintenance Booklet
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.
142High-voltage battery
Driving and parking

The high-voltage battery can be charged as
follows:
Rthrough energy recuperation while the
vehicle is in motion
Rwith the charging cable at a mains socket
while the vehicle is stationary
Rwith the charging cable at a charging sta-
tion while the vehicle is stationary
The high-voltage battery can be charged
using a single-phase charging cable in a volt-
age range from 100 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.
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 (
Ypage 183).
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.
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
charge immediatelymessage. 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 (
Ypage 184).
Further information on the "Energy flow dis-
play" can be found in the "Trip" menu
(
Ypage 187).
Energy consumption and range
This range is reduced by:
Rhigh and low outside temperatures
Ra non-anticipatory driving style
Rswitching 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:
Ra reduction in battery performance
Rlonger 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.
High-voltage battery143
Driving and parking
Z