2015 MERCEDES-BENZ B-CLASS HATCHBACK battery

X
Convenience closing feature: press and
hold the ebutton until the side windows
are closed.
The indicator lamp in the ebutton lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area during convenience closing, proceed as follows:
X Press the Wbutton for opening/closing
the side windows.
The side windows stop.
X To then open the side windows, press the
W button again.
or
X Press the ebutton for longer than two
seconds.
The side windows move in the opposite direc- tion.
X Convenience opening feature: press and
hold the ebutton until the side windows
are opened. The side windows move back to
their original positions.
The indicator lamp in the ebutton goes
out. Air-recirculation mode is deactivated.
Notes on the reversing feature for the side win-
dows (Y page 82).
If you open the side windows manually after
closing them using the convenience closing fea- ture, they will remain in this position when
opened using the convenience opening feature. Pre-entry climate control via key
Before getting in, the vehicle interior can be
briefly warmed or ventilated in advance. In addi- tion, the air from the air vent can be pre-cooled.
The high-voltage battery must be sufficiently
charged before the "Pre-entry climate control
via key" function can be activated.
Activating/deactivating the pre-entry cli-
mate control (via key)
When the vehicle is unlocked using the key or
KEYLESS-GO, the climate control functions are
activated.
The pre-cooling and pre-heating climate control functions last up to 5 minutes.
When the vehicle is pre-cooled, the following
functions are activated as necessary:
R Automatic climate control
R Cooling with air dehumidification
R Blower When the vehicle is pre-heated, the following
functions are activated as necessary:
R Automatic climate control
R Blower
R Seat heating
R Windscreen heating
R Rear window heating
Pre-entry climate control is automatically
switched off when operational readiness mode
is requested.
Activating/deactivating pre-entry climate
control (via key)
You can activate and deactivate the pre-entry
climate control (via key) function using the on-
board computer in the E-CELL
E-CELL submenu
(Y page 185).
i If the charge status of the high-voltage bat-
tery is below the specified minimum charge
status, pre-entry climate control will not be
activated even if it has been set. Pre-entry climate control at departure
time and immediate pre-entry climate control
Important safety notes G
WARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle.
General notes Using the "Pre-entry climate control at depar-
ture time" function, you can cool or heat the
vehicle interior prior to the desired departure
time.
When using the "Pre-entry climate control at
departure time" function, the charge status of
the high-voltage battery must be higher than the
specified minimum charge status.
The running time of the climate control may be
reduced if:
R the vehicle is not connected to an electric
power supply
R the high-voltage battery is not fully charged Operating the climate control system
121Climate control Z

With active "Pre-entry climate control at depar-
ture time" the charge status of the high-voltage
battery can be reduced, even if the charge cable connector is connected.
In certain situations, the desired interior tem-
perature cannot be reached.
When the vehicle is cooled, the following func-
tions are activated as necessary:
R Automatic climate control
R cooling with air dehumidification
R blower
When the vehicle is heated, the following func-
tions are activated as necessary:
R Automatic climate control
R Blower
R Seat heating
R Windscreen heating
R Rear window heating
"Immediate pre-entry climate control" is auto-
matically switched off when operational readi-
ness mode is requested.
Setting the departure time You can set a departure time for the "Pre-entry
climate control at departure time". Your vehicle
will then be cooled or heated until the desired
temperature is reached in time for the set depar-
ture time. "Pre-entry climate control at depar-
ture time" will be activated a maximum of
35 minutes before departure. If the departure is delayed, the vehicle will be heated or cooled fora further five minutes.
You can set the desired departure time in the E-
E-
CELL
CELL submenu on the on-board computer
(Y page 184).
Activating immediate pre-entry climate
control You can activate "Immediate pre-entry climate
control" even if the vehicle interior is already at
the desired temperature. This means, for exam- ple, that the vehicle interior continues to be
cooled or heated if the journey is interrupted for up to 50 minutes and the interior temperature iskept constant. You can only set the desired tem-
perature using the climate control unit. If you do not pre-select a temperature, the last tempera-
ture set will be automatically adopted. To activate/deactivate "Immediate pre-
entry climate control"
X Press button :in the centre console.
The blue or red indicator lamp in the button
lights up or goes out.
The colours of the indicator lamps in the button have the following meanings:
Red Heating activated
Blue Cooling activated
Yellow Pre-entry climate control at departure is preselected Switching the residual heat on/off
General notes It is possible to make use of the residual heat of
the engine to continue heating the vehicle for a
short period after the drive system has been
switched off. The heating time depends on the
set interior temperature.
i The blower will run at a low speed regardless
of the airflow setting.
i If you activate the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed.
i You cannot use the ventilation to cool the
vehicle interior to a temperature lower than
the outside temperature. 122
Operating the climate control systemClimate control

Switching on/off
X
Turn the key to position 0in the ignition lock
or remove it (Y page 126).
X To activate: press theÌbutton.
The indicator lamp in the Ìbutton lights
up.
X To deactivate: press theÌbutton.
The indicator lamp in the Ìbutton goes
out.
i Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen and
the bonnet free of blockages, such as ice,
snow or leaves
R never cover the vents or ventilation grilles in
the vehicle interior
i Optimal climate control function is achieved
by opening the air vents fully and setting the
adjusters to the middle position. Adjusting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents :to the
left.
X To close the centre air vent: turn the
adjuster in one of centre air vents :clock-
wise as far as it will go. Adjusting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster in
side air vent ;to the left.
X To close a side air vent: turn the adjuster in
side air vent ;clockwise as far as it will go. Air vents
123Climate control Z

Useful information
i This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
i Read the information on qualified specialist
workshops: (Y page 23). Running-in notes
In certain driving and driving safety systems, the sensors adjust automatically while a certain dis-
tance is being driven after the vehicle has been delivered or after repairs. Full system effective- ness is not reached until the end of this teach-in
process.
Brake pads/linings and discs that are either new or have been replaced only achieve optimum
braking effect after several hundred kilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor- mats 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 damage, the charging cable has been removed from the
vehicle socket. Otherwise, you cannot shift
the transmission out of position P.
The braking performance of the electric motor
using recuperative braking is, in some operating modes, either reduced or not effective:
R when the charge status of the high-voltage
battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
R when driving close to the maximum speed
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 Driving
125Driving and parking Z

sufficient. If necessary, counteract 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
Key g
To remove the key
1 Power supply for some consumers, such as
the windscreen wipers
2 Ignition (power supply for all consumers)
and drive position
3 To start the vehicle
i If the key does not belong to the vehicle, it
can still be turned in the ignition lock. How-
ever, the ignition will not be switched on. and
the drive system cannot be started.
Start/Stop button General notes
Vehicles with KEYLESS-GO are equipped with
keys featuring an integrated KEYLESS-GO func- tion and a detachable Start/Stop button.
A check which periodically establishes a radio
connection between the vehicle and the key
determines whether a valid key is in the vehicle. This occurs, for example, when starting the drivesystem.
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
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
key:
R the Start/Stop button must be inserted in the
ignition lock
R the key must be in the vehicle
R the vehicle must not be locked with the key or
KEYLESS-GO (Y page 72)
Do not keep the KEYLESS-GO key:
R with electronic devices, e.g. a mobile phone
or another key
R with metallic objects, e.g. coins or metal film
R inside metallic objects, e.g. a metal case
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the key'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 button
on the front door (Y page 79), you can continue
to start the drive system with the Start/Stop
button.
The drive system can be switched off while the
vehicle is in motion by pressing and holding the
Start/Stop button for three seconds.
Key positions with the Start/Stop button :
Start/Stop button
; Ignition lock
When you switch on the ignition, all of the indi-
cator lamps in the instrument cluster light up. 126
DrivingDriving and parking

Drive program S (Sport)
Drive program
Sis characterised by the follow-
ing:
R the vehicle exhibits sporty driving character-
istics
R the entire power output can be utilised by
depressing the accelerator pedal.
E+ (Economy Plus) Drive program
E+is characterised by the fol-
lowing:
R reduced torque and significantly reduced
power. This supports an especially efficient
and even driving style and results in a reduc-
tion in speed to approximately 110 km/h.
R the vehicle pulling away more gently in
forward gear unless the accelerator pedal is
depressed fully.
R the wheels are less likely to spin.
R particularly efficient overrun.
R full power output by using kickdown.
R the performance of the air-conditioning and
heating systems is reduced. Steering wheel gearshift paddles
Manually adjustable recuperation :
Left-hand steering wheel gearshift paddle -
; Right-hand steering wheel gearshift paddle
+
You can increase or reduce recuperation in over-
run mode using the steering wheel gearshift
paddles. 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 recuper- ated electrical energy is stored in the high-volt-
age battery. A higher energy recuperation level
means that the vehicle is braked more power-
fully.
If necessary, counteract the reduced regenera-
tive braking effect by applying the brake your-
self.
Information on the Recuperative Braking Sys-
tem (Y page 67).
X To decrease recuperation: pull right-hand
steering wheel gearshift paddle ;.
X To increase recuperation: pull left-hand
steering wheel gearshift paddle :.
The various recuperation levels are shown in the
transmission position display once Dhas been
selected (Y page 129).
The following recuperation levels are available in
overrun mode:
R no recuperation (D +
, coasting mode)
R moderate recuperation ( D)
R high recuperation ( D-
)
R recuperation depending on the traffic situa-
tion (D AUTO
, radar-based)
You can see the intensity of recuperation in
overrun mode by reading the recuperation per-
formance value shown in the power display
(Y page 173).
Every time drive position Dis selected, the
transmission switches into recuperation level
D AUTO
automatically.
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 maximum
possible amount of kinetic
energy. D
Normal driving132
TransmissionDriving and pa
rking

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 in D.
Energy use when decelerating is
considerably higher than when
the vehicle is braked with the
brake pedal. D
AUTO
(radar-
based) The intensity of recuperation is
automatically adjusted to the cur-
rent traffic situation.
Default setting In levels
Dand D-
, deceleration can be control-
led 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 effective:
R when the charge status of the high-voltage
battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
R when driving close to the maximum design
speed
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.
Radar-based recuperation The vehicle uses the sensors of COLLISION PRE-
VENTION 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 vari-
able 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:
R Approaching a slower vehicle, a decelerating
vehicle or when following a vehicle downhill.
Your vehicle decelerates slightly and increa-
ses recuperation.
R Driving when no vehicle is detected in front or
when a vehicle is detected in the far distance or an accelerating vehicle is detected. Your
vehicle switches to overrun mode at higher
speeds.
R Driving on a steep downhill slope. Accelera-
tion downhill is reduced and recuperation is
increased. This is comparable with shifting
down when driving downhill.
X To activate radar-based recuperation: pull
steering wheel gearshift paddle :or;
towards you and hold for about one second.
X To deactivate radar-based recuperation:
briefly pull steering wheel gearshift paddle
:
or ; towards you.
If you change between radar-based and manual
recuperation, the following levels are activated
depending on the selection via the steering
wheel gearshift paddles: :
Steering wheel
gearshift paddle - selects
D-
(maximum
recuperation) ;
Steering wheel
gearshift paddle + selects
D+
(overrun) In particular, the function of the radar sensors
can be impaired in the case of:
R
dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R strong radar reflections, for example, in multi-
storey car parks
R a narrow vehicle travelling in front, e.g. a
motorcycle
R a vehicle travelling in front on a different line
Following damage to the front end of the vehicle, have the radar sensor settings and operation
checked at a qualified specialist workshop
immediately. This also applies to collisions at
slow speeds where there is no visible damage to the front of the vehicle.
If the radar sensors are not available, the system
switches automatically to level Dwith moderate Transmission
133Driving and parking Z

recuperation. Have the radar sensors checked
at a qualified specialist workshop immediately.
Automatic adjustment of recuperation
on downhill gradients The vehicle can detect steep downhill gradients.
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 gradient.
Automatic adjustment of recuperation on down-
hill gradients is available in level DAUTO
or on
vehicles without steering wheel gearshift pad-
dles 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 ( DAUTO
). The rate of
recuperation is then automatically adjusted to
the current traffic situation, taking 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.
Do not touch any high-voltage components
after an accident and never modify the vehi-
cle'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 could exceed a critical value. In this case, flammable gas
escapes through a vent valve in the vehicle's
underbody. The gas can ignite. There is a risk of injury.
Leave the danger area immediately. Secure
the danger area at a suitable distance, whilst
observing legal requirements. G
DANGER
Connecting the charging cable to the mains
supply via incorrectly installed mains sockets or by means of adapters, extension cables or
similar could cause a fire or an electric shock. There is a risk of fatal injury.
To avoid such risks, observe the following:
R Only connect the charging cable to mains
sockets:
- which have been properly installed and
- which have been inspected by a qualified
electrician
R For safety reasons, only use charging
cables which have been supplied with the
vehicle or which have been approved for
this vehicle.
R Never use a damaged charging cable.
R Do not use:
- extension cables
- extension reels
- multi-outlet sockets
R Never use socket adapters 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 of an
electric vehicle.
R Observe the safety notes in the operating
instructions for the socket adapter. G
DANGER
Connecting the charging cable to the wallbox via an incorrectly installed wallbox or adapter,
extension cable or similar could cause a fire or an electric shock. There is a risk of fatal injury. 134
High-voltage batteryDriving and parking