power steering MERCEDES-BENZ B-CLASS HATCHBACK 2015 Owners Manual

You should therefore adapt your driving style
to the different handling characteristics. Have the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps (Y page 216) as well as display
messages (Y page 192). ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety and
offers increased braking comfort. In addition to
the braking function, ADAPTIVE BRAKE also has
the HOLD function (Y page 154) and hill start
assist (Y page 128). STEER CONTROL
General notes STEER CONTROL helps you by transmitting a
noticeable steering force to the steering wheel
in the direction required for vehicle stabilisation.
This steering support is provided in particular if:
R both right wheels or both left wheels are on a
wet or slippery road surface when you brake
R the vehicle starts to skid
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 61).
No steering support is provided from STEER
CONTROL, if: R ESP ®
is malfunctioning
R the steering is faulty
If ESP ®
is malfunctioning, you will be assisted
further by the electrical power steering. Recuperative Brake System
G
WARNING
In the event of malfunctions in the Recupera- tive Brake System, the following may occur: R
the braking performance of the electric
motor may be either reduced or not effec-
tive
R brake pedal resistance may be lower than
usual
R pedal travel may be longer than usual
If you do not make an additional effort to apply the brake yourself, the braking effect may not
be sufficient. There is a risk of an accident.
In the event of a malfunction, depress the
brake pedal further. The brake system is still
fully functional.
Observe the important safety notes on driving
safety systems (Y page 61).
The Recuperative Brake System converts the
kinetic energy when braking into electrical
energy. The electric motor is used as an alter-
nator during braking. This electrical energy is
then stored in the high-voltage battery.
You can find information about manually adjust- able recuperation under "Steering wheel gear-
shift paddles" (Y page 132).
If the warning light in the instrument cluster is lit up, there is a motor malfunction or a brake mal-
function.
Observe information regarding indicator and
warning lamps (Y page 215) as well as display
messages (Y page 190). Protection against theft
Immobiliser
The immobiliser prevents your vehicle from
being started without the correct key.
X To activate with the key: remove the key
from the ignition lock.
X To activate with KEYLESS-GO start func-
tion or KEYLESS-GO:
switch the ignition off
and open the driver's door.
X To deactivate: switch on the ignition.
When leaving the vehicle, always take the key
with you and lock the vehicle. Anyone can start
the drive system if a valid key has been left
inside the vehicle.
i The immobiliser is always deactivated when
you start the drive system. Protection against theft
67Safety 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

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

Parking
Important safety notes
G
WARNING
If you release the parking brake on uphill or
downhill gradients, the vehicle can begin to
move when in park position P. There is a risk
of an accident.
To avoid hazardous situations:
R prevent the parked vehicle from rolling on
uphill or downhill gradients by always
applying the parking brake.
R do not park the vehicle on uphill or downhill
gradients if the parking brake is malfunc-
tioning. G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion, for example, if they:
R release the parking brake
R shift the transmission out of park position P
R start the vehicle's drive system
In addition, they may operate vehicle equip-
ment. There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
! while the vehicle is rolling, do not shift the
transmission directly from Dto R, from Rto D
or directly to P.
Do not open the driver's door while the vehi-
cle is in motion. Otherwise, at low speeds in
transmission position Dor R, park position P
is engaged automatically and the electrical
parking brake is applied.
The transmission could be damaged.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is safeguarded
against rolling away unintentionally: R the electric parking brake must be applied.
R the transmission must be in position P.R
the key must be turned to position 0in the
ignition lock and then removed from the igni-
tion lock or the Start/Stop button must be
pressed
R on uphill or downhill gradients, turn the front
wheels towards the kerb. Switching off the drive system
G
WARNING
If you switch off the ignition while the vehicle
is in motion, safety-relevant functions are
restricted or not available. This can affect the power steering function and the brake boost-
ing effect, for example. You will then require
considerably more force to steer and brake.
There is a risk of an accident.
Do not switch off the ignition while the vehicle is in motion.
X Shift the DIRECT SELECT lever to position P.
X With the key: turn the key to position 0in the
ignition lock and remove it.
The immobiliser is activated.
X With the Start/Stop button: press the
Start/Stop button (Y page 126).
The drive system and all the indicator lamps in
the instrument cluster go out.
When the driver's door is closed, this corre-
sponds to key position 1. When the driver's
door is open, this corresponds to key position
0: "key removed".
If you switch the drive system off with the trans- mission in position Ror D, the transmission
automatically shifts to N.
With the key: if you then open the driver's door
or the front-passenger door or remove the key
from the ignition, the transmission automati-
cally shifts to P.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the transmission automatically shifts to P.
If you want the transmission to remain in neutral
N, e.g. when having the vehicle cleaned in an
automatic car wash with a towing system: Parking
145Driving and parking Z

Applying automatically
When the vehicle's HOLD function is holding the
vehicle at a standstill, the electric parking brake is engaged automatically.
In addition, at least one of the following condi-
tions must be fulfilled:
R the drive system is switched off
R the driver's door is open and the seat belt is
not fastened
R there is a system malfunction
R the power supply is insufficient
R the vehicle is stationary for a lengthy period
The red !indicator lamp in the instrument
cluster lights up.
Releasing automatically The electric parking brake of your vehicle is
released automatically when all of the following
conditions are fulfilled:
R the vehicle has been started
R the transmission is in position Dor R
R the seat belt is fastened
R you depress the accelerator pedal
If the transmission is in position R, the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled to automatically
release the electric parking brake:
R the driver's door is closed
R you have shifted out of transmission position
P or you have previously driven faster than
3 km/h
Ensure that you do not depress the accelerator
pedal unintentionally. Otherwise, the parking
brake will be released and the vehicle will start
to move.
Emergency braking The vehicle can also be braked during an emer-
gency by using the electric parking brake.
X While driving, push handle :of the electric
parking brake (Y page 146).
The vehicle is braked as long as you keep
handle :of the electric parking brake
pressed. The longer the electric parking brake
handle :is depressed, the greater the brak-
ing force. During braking:
R a warning tone sounds
R the Release parking brake
Release parking brake message
appears
R the red !indicator lamp in the instrument
cluster flashes
When the vehicle has been braked to a stand-
still, the electric parking brake is applied. Parking up the vehicle
If you leave the vehicle parked up for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked up for longer than
six weeks, it may suffer from lack of use.
X Visit a qualified specialist workshop and seek
advice.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop. Driving tips
General notes
Important safety notes 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.
Your vehicle is powered by an electric motor.
The electric motor draws the energy required to
drive the vehicle from the high-voltage battery.
When braking and rolling, kinetic energy is con- verted into electrical energy by energy recovery
and stored in the high-voltage battery.
The range of the vehicle is reduced when con-
sumers are switched on, e.g. THERMOTRONIC. Driving tips
147Driving and pa rking Z

Further information on the ECO display
(Y page 148).
Energy flow Energy flow display
The energy flow display can be shown in the
multifunction display and in the COMAND/
Audio display. X Press the =or; button on the steering
wheel to select the Trip Tripmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select Energy flow
Energy flow .
The active components are highlighted in the
energy flow display.
The energy flow is indicated by arrows. The
arrows have a different colour depending on the
operating state:
R Green: energy recuperation
R White: normal energy consumption
R Red: increased energy consumption
Drive system switched on when the vehi-
cle is stationary or in overrun mode The drive system is switched on while the vehi-
cle is stationary. Alternatively, the drive system is switched on while the vehicle is in transmis-
sion position D+
or N.
There are no arrows indicating energy flow.
Drive system switched off and high-volt-
age battery being charged The drive system is switched off. The charging
cable is connected and the high-voltage battery
is being charged.
The arrows for the energy flow are shown in
green.
Normal driving The drive system powers the vehicle.
The arrows for the energy flow are shown in
white.
Boost driving mode If high power is required, the boost mode takes
effect.
The arrows for the energy flow are shown in red.
Energy recuperation mode The kinetic energy of the vehicle is converted
into electrical energy. The Recuperative Brake
System is active. The high-voltage battery is
charging.
The arrows for the energy flow are shown in
green. Menus and submenus
177On-board computer and displays Z

RANGE PLUS charges when:
R you have activated RANGE PLUS via the
centre console prior to charging and
R the high-voltage battery is fully charged.
If charging is not complete by departure time,
the maximum range will notbe available. Example:
R Set departure time: 6:41 a.m.
R End time for standard high-voltage battery
charging: 6:00 a.m.
R Charge status RANGE PLUS at 6:41 a.m.: half
of the additional range
R The maximum additional range is reduced by
half.
Pre-entry climate control at time of depar-
ture
If you activate the "Rem. Climate Control at
departure time" function, the vehicle interior is
heated or cooled prior to a desired departure
time.
i To heat or cool the vehicle interior for a
desired departure time, the high-voltage bat-
tery must be sufficiently charged. Activate the climate control function primarily when the
high-voltage battery is being charged. You
must also set a departure time using the E-
E-
CELL CELL submenu (Y page 184).
Switching "Pre-entry climate control at
departure time" on/off
X Press the =or; button on the steering
wheel to select the Settings
Settingsmenu.
X Use 9 or: to select the E-CELL
E-CELL sub-
menu.
X Press ato confirm.
X Press 9or: to select Pre-entry
Pre-entry
climate control at depart. time:
climate control at depart. time:.
X Press ato activate or deactivate.
The vehicle interior will then be heated or
cooled prior to the predefined departure time. If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary heat-
ing button.
You can use the on-board computer to specify
up to three departure times in the E-CELL E-CELLsub-
menu. One of the specified departure times may
be preselected (Y page 184).
Pre-entry climate control (via key)
Pre-entry climate control via the key is switched on temporarily when the vehicle is unlocked
using the key. In order to switch on pre-entry
climate control via the key, the function has to
be activated using the on-board computer.
Activating/deactivating pre-entry climate
control via the key
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Use 9 or: to select the E-CELL
E-CELLsub-
menu.
X Press ato confirm.
X Press 9or: to select Pre-entry
Pre-entry
climate control (via key)
climate control (via key).
X Press ato activate or deactivate.
If pre-entry climate control via key is activa-
ted, pre-entry climate control using the key is switched on temporarily when you unlock thevehicle.
Setting the maximum charge current Before charging the high-voltage battery, check
the maximum permissible charge current for the relevant power socket.
You can set a maximum charge current in the E- E-
CELL
CELL menu.
It is only necessary to select the maximum
charge current if there are no charge current
settings on the charging cable.
i The maximum charge current values in the
on-board computer may deviate from the
charging cable values. Example: changing the charge current
:
Setting the maximum charge current Menus and submenus
185On-board computer and displays Z

i
This menu is not available in some coun-
tries. In this case, the maximum charge cur-
rent for the power socket is limited to a fixed
level, depending on the country concerned.
X Press the =or; button on the steering
wheel to select the Settings
Settings menu.
X Use 9 or: to select the E-CELL E-CELLsub-
menu.
X Press ato confirm.
X Press 9or: to select Maximum
Maximum
charge current:
charge current:.
X Press ato confirm.
X Press 9or: in the submenu to select
desired maximum charge current :.
X Press the abutton on the multifunction
steering wheel to confirm.
The high-voltage battery is charged with the
selected maximum charge current.
Instrument cluster Selecting the distance unit
The Display unit Speed-/odometer:
Display unit Speed-/odometer: func-
tion allows you to choose whether certain dis-
plays appear in kilometres or miles in the mul-
tifunction display.
X Press the =or; button on the steering
wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Instrument cluster Instrument cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Display unit Speed-/odometer
Display unit Speed-/odometer function.
You will see the selected setting: km
kmormiles
miles.
X Press the abutton to save the setting.
The selected unit of measurement for distance
applies to the:
R digital speedometer in the Trip
Tripmenu
R total distance recorder and the trip meter
R trip computer
R current energy consumption and approxi-
mate range
R navigation instructions in the Navi Navimenu
R cruise control
R SPEEDTRONIC
R ASSYST PLUS service interval display Switching the additional speedometer
on/off
United Kingdom: this function is unavailable.
If the additional speedometer is switched on,
the speed is shown in the status bar of the mul-
tifunction display instead of the outside tem-
perature.
The speed display is inverse to your speedome- ter.
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Instrument cluster
Instrument cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Dig. speedo [mph]
Dig. speedo [mph] function.
You will see the selected setting: on
onoroff
off.
X Press the abutton to save the setting.
Selecting permanent display
United Kingdom: this function is unavailable.
The Permanent display: Permanent display: function allows you
to choose whether the multifunction display
always shows the outside temperature or the
speed.
The speed display is inverse to your speedome- ter.
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Instrument cluster
Instrument cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Permanent display:
Permanent display: function.
The current setting, outside temperature
outside temperature
or Dig. speedo [mph]:
Dig. speedo [mph]:, appears.
X Press the abutton to save the setting.
Lights Switching the daytime driving lights
on/off
The Daytime driving lights Daytime driving lights function can
only be switched on with the drive system
turned off.
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Lights
Lights submenu. 186
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Ð
Power steering mal‐ Power steering mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The power steering assistance is faulty.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
If you are able to steer safely:
X Drive on carefully.
X Consult a qualified specialist workshop immediately.
If you are unable to steer safely:
X Do not drive on.
X Consult a qualified specialist workshop. Telephone Telephone
No
Noservice
service Your vehicle is outside the network provider's transmitter/receiver
range.
X Wait until the mobile phone operational readiness symbol appears
in the multifunction display. ¥
Top up washer fluid Top up washer fluid The washer fluid level in the washer fluid reservoir has dropped below
the minimum.
X Top up the washer fluid (Y page 241).Wiper malfunction‐
Wiper malfunction‐
ing ing The windscreen wipers are defective.
X Consult a qualified specialist workshop. Hazard warning
Hazard warning
lamps malfunction‐ lamps malfunction‐
ing ing The hazard warning lamps are faulty.
X Consult a qualified specialist workshop. î
Charger cable con‐ Charger cable con‐
nected nected The charging cable is still connected to the vehicle socket.
X Remove the charging cable from vehicle socket. Key
Display messages
Possible causes/consequences and
M
MSolutions Â
Key Key
does
does not
notbelong
belong
to vehicle
to vehicle You have put the wrong key in the ignition lock.
X Use the correct key. Â
Replace key Replace key The key needs to be replaced.
X Consult a qualified specialist workshop. 212
Display
messagesOn-board computer and displays

Recovery
Important safety notes
G
WARNING
Safety relevant functions are restricted or no
longer available if:
R the ignition is switched off
R the brake system or power steering is mal-
functioning
R there is a malfunction in the voltage supply
or the vehicle's electrical system.
When your vehicle is towed, you may require
considerably more effort to steer and brake.
There is a risk of an accident.
In such cases use a rigid towing bar. Before
towing away, make sure the steering moves
freely. G
WARNING
If the steering wheel lock is engaged, the vehi- cle can no longer be steered. There is a risk of
an accident.
Always switch on the ignition when towing
with a tow rope or a towing bar. G
WARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible gross weight of your vehicle, the:
R towing eye may be torn off
R car/trailer combination may swerve or
even overturn
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
Details on the permissible gross vehicle weight
of your vehicle can be found on the vehicle iden-
tification plate (Y page 281). !
When COLLISION PREVENTION ASSIST
PLUS or the HOLD function is activated, the
vehicle brakes automatically in certain situa-
tions. To avoid damage to the vehicle, deac-
tivate these systems in the following or simi-
lar situations:
R when towing away
R in a car wash
! Make sure that the electric parking brake is
released. If the electric parking brake is faulty, visit a qualified specialist workshop.
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose.
! Only secure the tow rope or towing bar to
the towing eyes. The vehicle may otherwise
be damaged.
! Observe the following points when towing
with a tow rope:
R secure the tow rope on the same side on
both vehicles.
R make sure that the tow rope is not longer
than legally permitted. Mark the tow rope in
the middle, e.g. with a white cloth
(30 x 30 cm). This makes other road users
aware that a vehicle is being towed.
R only secure the tow rope to the towing eye.
R observe the brake lamps of the towing vehi-
cle while driving. Always maintain a dis-
tance so that the tow rope does not sag.
R do not use steel cables or chains to tow
your vehicle. You could otherwise damage
the vehicle.
! Do not use the towing eyes for recovery pur-
poses as this could damage the vehicle. If in
doubt, recover the vehicle with a crane.
! When towing, pull away slowly and
smoothly. If the tractive power is too high, the
vehicles could be damaged.
! You may tow the vehicle for a maximum of
50km. A towing speed of 50 km/h must not
be exceeded.
For towing distances over 50 km, the front
axle or the entire vehicle must be raised and
transported.
! When towing vehicles with KEYLESS-GO,
use the key instead of the Start/Stop button. The transmission may otherwise shift to posi- tion Pwhen you open the driver's or front- 260
RecoveryBreakdown assistance