ESP MERCEDES-BENZ B-CLASS HATCHBACK 2015 Service Manual

Further information on situations where an indi-
cator lamp either fails to go out after starting the drive system or lights up while driving
(Y page 215).
If Start/Stop button :has not yet been
pressed, this corresponds to the key being
removed from the ignition.
X To switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now activate the windscreen wipers, for example.
The power supply is switched off again if:
R the driver's door is opened and
R you press Start/Stop button :twice when in
this position
X To switch on the ignition: press Start/Stop
button :twice.
The ignition is switched on.
If you press Start/Stop button :once when
in this position, the ignition is deactivated
again.
Removing the Start/Stop button
You can remove the Start/Stop button from the
ignition lock and start the vehicle as normal
using the key.
You can only switch between Start/Stop button
mode and key operation when the vehicle is sta- tionary.
You must also engage park position P.
X Remove Start/Stop button :from ignition
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, always take the
key with you when leaving the vehicle. As long as
the key is in the vehicle:
R the vehicle can be started using the Start/
Stop button
R the electrically powered equipment can be
operated Starting the vehicle
Important safety notes G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion by, for example:
R releasing the parking brake
R shifting the transmission out of park posi-
tion P
R starting the vehicle's drive system
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 and animals unattended in the vehi-
cle. Keep the keys out of the reach of children.
Vehicles with an electric motor generate signif- icantly less noise than vehicles with internal
combustion engines. As a result, your vehicle
may not be heard by other road users in certain
situations. This can happen, for example, when
you are parking and your vehicle is not seen by
other road users. This requires you to adopt a
particularly anticipatory driving style, as it is
necessary to allow for the possibility that other
road users may behave unpredictably.
The vehicle can be equipped with a sound gen-
erator. The sound generator is activated so that other road users can hear your vehicle better.
The sound generator is activated at speeds
under 30 km/h and switches off automatically
at higher speeds.
Starting procedure using the Start/
Stop button The Start/Stop button can be used to start the
vehicle manually without inserting the key into
the ignition lock. The key must be in the vehicle
and the Start/Stop button must be inserted in
the ignition lock. Driving
127Driving and parking Z

You can start the drive system if a valid key is in
the vehicle. Switch off the drive system and
always take the key with you when leaving the
vehicle, even if you only leave it for a short time. Pay attention to the important safety notes.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 126).
The drive system is started. Once the vehicle
is ready to be driven, the Ready
Ready display
(Y page 172) appears in the lower part of the
multifunction display.
Starting procedure with the key To start the drive system using the key instead
of the Start/Stop button, pull the Start/Stop
button out of the ignition lock.
X Turn the key to position 3(Y page 126) in the
ignition lock and release it.
The drive system is started. Once the vehicle
is ready to be driven, the Ready Readydisplay
(Y page 172) appears in the lower part of the
multifunction display. Pulling away
The vehicle can be equipped with a sound gen-
erator. At low speeds, an electric vehicle makes
less noise than a vehicle with a combustion
engine. The sound generator is activated so that
other road users can hear your vehicle better.
The sound generator is activated at speeds
under 30 km/h and switches off automatically
at higher speeds.
X Depress the brake pedal and keep it
depressed.
X Move the DIRECT SELECT lever to position D
or R.
X Release the brake pedal.
X Carefully depress the accelerator pedal.
The electric parking brake is automatically
released (Y page 146).
The red !indicator lamp in the instrument
cluster goes out.
The vehicle locks centrally once you have pulled
away. The locking knobs in the doors 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 deactivated and
the electrical parking brake is released auto-
matically. 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 cables are connec-
ted. The parking lock cannot be released if a
charging cable is connected. 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 away. G
WARNING
After a while, hill start assist no longer holds
the vehicle and it may 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 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 sta-
tionary on uphill gradients (Y page 131). 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 auto-
matically. 128
TransmissionDriving and parking

If the DIRECT SELECT lever cannot be engaged
in park position P, the parking brake is engaged
automatically.
Observe the important safety notes on switch-
ing ESP ®
on and off (Y page 66). 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 posi- tion P,R, Nor Dappears in the transmission
position display in the multifunction display
(Y page 129).
Transmission position and drive pro-
gram display The current transmission position and drive pro-
gram appear in the multifunction display. :
Transmission position display
; Drive program display The arrows in the transmission position display
show how and into which transmission positions
you can shift using the DIRECT SELECT lever.
If the transmission position display in the mul-
tifunction display is not working, you should pull
away carefully to check whether the desired
transmission position is engaged. Ideally, you
should select transmission position D.
Engaging park position P j
Park position with parking lock
k Reverse gear
i Neutral
h Drive
X Push the DIRECT SELECT lever in the direction
of arrow P.
Transmission position display Pis shown in
the multifunction display.
When you have engaged park position P, make
sure that the transmission position display
shows Pin the multifunction display.
You can only engage park position Pwhen the
vehicle is stationary.
The transmission shifts into park position P
automatically if you open the driver's door when
the vehicle is stationary or when driving at very
low speed with the transmission in position Dor
R.
In addition, a warning tone sounds and a display message is shown.
Depressing the brake and pushing the DIRECT
SELECT lever up or down disengages the park-
ing lock. The transmission is in neutral N.
In order to shift from park position Pdirectly into
R or D:
R depress the brake pedal and
R push the DIRECT SELECT lever up or down
past the first point of resistance Transmission
129Driving and parking Z

Transmission positions
B Parking lock
This prevents the vehicle from rolling
away when stopped. Only move the
DIRECT SELECT lever to Pwhen the
vehicle is stationary.
The key can only be removed when
the DIRECT SELECT lever is in posi-
tion P. When there is no key in the
ignition lock, the DIRECT SELECT
lever is locked in position P.C Reverse gear
Only move the DIRECT SELECT lever
to
Rwhen the vehicle is stationary. A Neutral
No power is transmitted from the
drive system to the drive wheels.
Releasing the brakes will allow you to
move the vehicle freely.
If ESP ®
is faulty: only move the
DIRECT SELECT lever to Nif the vehi-
cle is in danger of skidding, e.g. on icy
roads. 7 Drive
For driving forwards
Driving tips
Holding the vehicle stationary on uphill
gradients Do not hold the vehicle stationary on uphill gra-
dients by depressing the accelerator pedal.
Instead, only ever hold the vehicle stationary on
uphill gradients by:
R depressing the brake pedal
R engaging the electric parking brake
Kickdown Use kickdown for maximum acceleration:
X Depress the accelerator pedal beyond the
pressure point.
The needle in the power display points to the
boost area (Y page 173).
X Ease off the accelerator pedal once the
desired speed is reached. i
Maximum acceleration is available for a limi-
ted time. Program selector button
The program selector button allows you to
choose between drive programs with different
driving characteristics. X
Press program selector button :.
The selected drive program appears in the
multifunction display.
The transmission switches to automatic drive
program Eeach time the drive system is started. E
Economy Comfortable, economical
driving style
S
Sport Sporty driving style
E+
Economy
Plus Comfortable, particularly
economical driving style
Drive programs
Drive program E (Economy) Drive program
Eis characterised by the follow-
ing:
R the vehicle pulling away more gently in
forward gear unless the accelerator pedal is
depressed fully.
R reduced power on the accelerator pedal
increases sensitivity. This supports an even
and economical driving style.
R the wheels are less likely to spin.
R full power output by using kickdown. Transmission
131Driving 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

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

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

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

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

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