2015 MERCEDES-BENZ B-CLASS HATCHBACK engine

Observe the information on warning lamps
(Y page 218) and display messages which may
be shown in the instrument cluster
(Y page 190).
Only use wheels with the recommended tyre
sizes. Only then will ESP ®
function properly.
Characteristics of ESP ®Characteristics of ESP
®
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP ®
is automatically
active.
If ESP ®
intervenes, the ÷ESP®
warning lamp
flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any circum-
stances.
X When pulling away, only depress the acceler-
ator pedal as far as is necessary.
X Adapt your driving style to suit the prevailing
road and weather conditions.
Deactivating/activating ESP ®Important safety notes
You can select between the following statuses
of ESP ®
:
R ESP ®
is activated
R ESP ®
is deactivated G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the follow-
ing situations:
R when using snow chains
R in deep snow
R on sand or gravel
i Activate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilise the vehicle
if the vehicle starts to skid or a wheel starts to
spin. Deactivating/activating ESP
®
You can deactivate or activate ESP ®
via the on-
board computer (Y page 182).
ESP ®
deactivated:
The å ESP®
OFF warning lamp in the instru-
ment cluster lights up.
ESP ®
activated:
The å ESP®
OFF warning lamp in the instru-
ment cluster goes out.
Characteristics when ESP ®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the ÷ESP®
warning lamp in the
instrument cluster flashes. In such situations,
ESP ®
will not stabilise the vehicle.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability
R Engine torque is no longer limited and the
drive wheels are able to spin
The spinning of the wheels results in a cutting
action for better traction on loose surfaces.
R Traction control is still activated
R COLLISION PREVENTION ASSIST is no longer
available; nor is it activated if you brake firmly
with assistance from ESP ®
R PRE-SAFE ®
is no longer available; it is also not
activated if you brake firmly with assistance
from ESP ®
R ESP ®
still provides support when you brake
firmly EBD (electronic brake force distribu-
tion)
General notes EBD monitors and controls the brake pressure
on the rear wheels to improve driving stability
while braking.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 61). G
WARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the risk of skidding and an accident. 66
Driving safety systemsSafety

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). Key
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. G
WARNING
If you attach heavy or large objects to the key, the key could be unintentionally turned in the
ignition lock. This could cause the engine to
be switched off. There is a risk of an accident.
Do not attach any heavy or large objects to the
key. Remove any bulky keyrings before insert-
ing the key into the ignition lock. !
Keep the key away from strong magnetic
fields. Otherwise, the remote control function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the 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
Vehicles with KEYLESS-GO start function: do
not keep the key in the luggage compartment.
Otherwise, the key may not be detected, e.g.
when starting the drive system using the Start/
Stop button.
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
If the vehicle has been locked from the outside, the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate the
double lock function by deactivating the interior
motion sensor (Y page 69). The doors can then
be opened from the inside after the vehicle has
been locked from the outside. You can open the rear doors from inside the vehicle if they are not
secured by the child-proof locks (Y page 60).
The anti-theft alarm system is triggered if the
door is opened from the inside. Switch off the
alarm (Y page 68). 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. Key
71Opening and closing Z

Mirrors
Rear-view mirror
X
Anti-dazzle mode: pivot anti-dazzle
switch :forwards or back. Exterior mirrors
Adjusting the exterior mirrors G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the vehicle's drive system. G
WARNING
The exterior mirrors reduce the size of the
image. Objects visible in the mirrors are
closer than they appear. You could misjudge
the distance from road users driving behind
you when changing lanes, for instance. There is a risk of an accident.
You should therefore always look over your
shoulder to determine the actual distance
from road users driving behind you. X
Turn the key to position 1or 2in the ignition
lock (Y page 126).
X Press button :for the left-hand exterior mir-
ror or button ;for the right-hand exterior
mirror.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected mirror using
adjustment button =as long as the indicator
lamp is lit.
X Press adjustment button =up, down, or to
the left or right until you have adjusted the
exterior mirror to the correct position. You
should have a good overview of traffic condi-
tions.
The convex exterior mirrors provide a larger field
of vision.
After the engine has been started, the exterior
mirrors are automatically heated at low outside temperatures. Heating takes a maximum of ten
minutes.
i The exterior mirrors can also be heated
manually by switching on the rear window
heating. Mirrors
93Seats, steering wheel and mirrors Z

X
To switch on the parking lamps: the key
should not be in the ignition lock or it should
be in position 0.
X Turn the light switch to W(left-hand side of
the vehicle) or X(right-hand side of the
vehicle).
Adjusting the headlamp range (halogen
headlamps) g
Driver's seat and front-passenger seat
occupied
1 Driver's seat, front-passenger seat and rear
seats occupied
2 Driver's seat, front-passenger seat and rear
seats occupied, luggage compartment
laden
3 Driver's and front-passenger seat occupied
and maximum permissible rear axle load uti-
lised
The headlamp range control allows you to adjust
the cone of light from the headlamps to suit the
vehicle load.
X Start the drive system.
X Turn the headlamp range control to the posi-
tion which corresponds to the load in your
vehicle. Combination switch
Turn signals :
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left
X To indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
X To indicate: press the combination switch
beyond the pressure point in the direction of
arrow ;or?.
Main-beam headlamps X
To switch on the main-beam headlamps:
turn the key in the ignition lock to position 2
or start the drive system.
X Turn the light switch to LorÃ.
X Press the combination switch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the main-beam head-
lamps are only switched on when it is dark and the engine is running.
The blue Kindicator lamp in the instru-
ment cluster lights up when the main-beam
headlamps are switched on.
X To switch off the main-beam headlamps:
move the combination switch back to its nor-
mal position.
The blue Kindicator lamp in the instru-
ment cluster goes out.
Vehicles with Adaptive Highbeam Assist: when
Adaptive Highbeam Assist is active, it controls
activation and deactivation of the main-beam
headlamps (Y page 101). Exterior lighting
99Lights andwindscreen wipers Z

Never fold a windscreen wiper arm without a
wiper blade back onto the windscreen/rear
window.
Hold the windscreen wiper arm firmly when
you change the wiper blade. If you release the
wiper arm without a wiper blade and it falls
onto the windscreen/rear window, the wind-
screen/rear window may be damaged by the
force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
Replacing the windscreen wiper blades (variant 1) Removing the wiper blades
X Vehicles without KEYLESS-GO: remove the
key from the ignition lock.
X Vehicles with KEYLESS-GO: switch off the
engine.
X Fold the wiper arm away from the windscreen. X
Press both release clips ;.
X Fold wiper blade :in the direction of
arrow =away from wiper arm ?.
X Remove wiper blade :in the direction of
arrow A. Fitting the wiper blades X
Position new wiper blade :with recess B
on lug A.
X Fold wiper blade :in the direction of arrow
= onto the wiper arm until retaining clips ;
engage in bracket ?.
X Make sure that wiper blade :is seated cor-
rectly.
X Fold the wiper arm back onto the windscreen.
Replacing the windscreen wiper blades (variant 2) Removing the wiper blades
X Vehicles without KEYLESS-GO: remove the
key from the ignition lock.
X Vehicles with KEYLESS-GO: switch off the
engine.
X Fold the wiper arm away from the windscreen. X
Hold onto the wiper arm with one hand. With
the other hand, turn the wiper blade in the
direction of arrow :away from the wiper arm
as far as it will go.
X Slide catch ;in the direction of arrow =
until it engages in the removal position with a noticeable click. 110
Windscreen wipersLights and windscreen wipers

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

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