2015 MERCEDES-BENZ B-CLASS HATCHBACK service

Activating the HOLD function
X
Make sure that the activation conditions are
met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until :appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first time
does not activate the HOLD function, wait
briefly and then try again.
Deactivating the HOLD function The HOLD function is deactivated automatically
if:
R you accelerate. On vehicles with automatic
transmission: only when the transmission is in
position Dor R.
R the transmission is in position P.
R you depress the brake pedal again with a cer-
tain amount of pressure until :disappears
from the multifunction display.
R you secure the vehicle using the electric park-
ing brake.
i After a short period, the vehicle is secured
by the electric parking brake, thus relieving
the service brake.
The electric parking brake secures the vehicle
automatically if the HOLD function is activated
and:
R the driver's seat belt is not fastened and the
driver's door is open
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function
R a system fault occurs
R the power supply is insufficient
The Brake immediately Brake immediately message may also
appear in the multifunction display. X
Immediately depress the brake pedal firmly
until the warning message in the multifunc-
tion display goes out.
The HOLD function is deactivated. A horn will
sound at regular intervals if you turn off the
engine, take off your seat belt or open the driv-
er's door when the HOLD function is activated.
The horn alerts you to the fact that the HOLD
function is still activated. If you attempt to lock
the vehicle, the tone becomes louder. The vehi- cle cannot be locked until you have deactivated
the HOLD function.
i Once you have switched off the engine, you
cannot restart it until you have deactivated
the HOLD function. PARKTRONIC
Important safety notes PARKTRONIC is an electronic parking aid with
ultrasonic sensors. It monitors the area around
your vehicle using six sensors in the front
bumper and six sensors in the rear bumper.
PARKTRONIC indicates visually and audibly the
distance between your vehicle and an object.
PARKTRONIC is only an aid. It is not a substitute for your attention to the immediate surround-
ings. The responsibility for safe manoeuvring
and parking remains with you. Make sure that
there are no persons, animals or objects in
range while manoeuvring and parking.
! When parking, pay particular attention to
objects above or below the sensors, such as
flower pots or trailer drawbars. PARKTRONIC does not detect such objects when they are in
the immediate vicinity of the vehicle. You
could damage the vehicle or the objects.
The sensors may not detect snow and objects which absorb ultrasonic sources.
Ultrasonic sources, such as an automatic car
wash, a lorry's compressed-air brakes or a
pneumatic drill, could cause PARKTRONIC to
malfunction.
PARKTRONIC may not function correctly on
uneven terrain. Driving systems
155Driving and parking Z

X
Select the assistance graphics display for
ATTENTION ASSIST using the on-board com-
puter (Y page 182).
The following information is displayed:
R the length of the journey since the last break
R the attention level determined by ATTENTION
ASSIST ( Attention level
Attention level), displayed in a
bar display in five levels from high to low
R if ATTENTION ASSIST is unable to calculate
the attention level and cannot issue a warn-
ing, the System suspended
System suspended message
appears. The bar display then changes the
display, e.g. if you are driving at a speed below 60 km/h or above 200 km/h.
Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer (Y page 183).
The system determines the attention level of
the driver depending on the setting selected:
If Standard
Standard is selected: the sensitivity with
which the system determines the attention level
is set to normal.
If Sensitive Sensitive is selected: the sensitivity is set
higher. The attention level detected by ATTEN-
TION ASSIST is adapted accordingly and the
driver is warned earlier.
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction dis-
play in the assistance graphic display.
When ATTENTION ASSIST has been deactivated, it is automatically reactivated after the engine
has been switched off. The sensitivity selected
corresponds to the last selection activated
(standard/sensitive).
Warning in the multifunction display If fatigue or increasing lapses in concentration
are detected, a warning appears in the multi-
function display:
ATTENTION ASSIST ATTENTION ASSIST Take a
Take a
break!
break!.
In addition to the message shown in the multi-
function display, you will then hear a warning
tone.
X If necessary, take a break.
X Confirm the message by pressing the a
button on the steering wheel.
On long journeys, take regular breaks in good
time that allow for adequate recuperation. If you do not take a break and ATTENTION ASSIST still detects increasing lapses in concentration, you
will be warned again after 15 minutes at the
earliest. This will only happen if ATTEN-
TION ASSIST still detects typical indicators of
fatigue or increasing lapses in concentration.
If a warning is output in the multifunction dis-
play, a service station search is performed in
COMAND Online. You can select a service sta-
tion and navigation to this service station will
then begin. This function can be activated and
deactivated in COMAND Online. Traffic Sign Assist
General notes Traffic Sign Assist displays the maximum speed
permitted and overtaking restrictions to the
driver in the instrument cluster. Driving onto a
section of road in the wrong direction triggers a
warning. Traffic Sign Assist detects traffic signs with multifunction camera :attached at the
top of the windscreen. The data and general
traffic regulations stored in the navigation sys-
tem are also used to determine the current
speed limit.
If a traffic sign that is relevant to your vehicle is passed, the display of the speed limits and over-
taking restrictions is updated.
The display can also be updated without a visible traffic sign if:
R the vehicle changes roads (e.g. motorway exit
or slip road)
R a village or town boundary is passed which is
stored in the digital map
R the last traffic sign detected by the camera
has not been repeated
If a sign indicating the end of a restriction (speed limit or overtaking restriction) is passed, the
sign is displayed for five seconds. The currently 166
Driving systemsDriving and parking

Telephone menu
Introduction G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
When telephoning, you must observe the legal
requirements for the country in which you are
currently driving. X Switch on the mobile phone (see the manu-
facturer's operating instructions).
X Switch on Audio 20 or COMAND Online; see
the separate operating instructions.
X Insert the mobile phone into the bracket
(Y page 236).
or X Establish a Bluetooth ®
connection to Audio
20 or COMAND Online; see the separate oper- ating instructions.
X Press the =or; button on the steering
wheel to select the Tel
Tel menu.
You will see one of the following display mes-
sages in the multifunction display:
R Telephone ready Telephone ready or the name of the net-
work provider: the mobile phone has found a network and is ready to receive.
R Telephone
Telephone No
Noservice
service: there is no network
available or the mobile phone is searching for
a network.
i You can obtain further information about
suitable mobile phones and connecting
mobile phones via Bluetooth ®
:
R at any Mercedes-Benz Service Centre
R on the Internet at http://www.mercedes-
benz.com/connect Accepting a call If someone calls you when you are in the
Tel Tel
menu, a display message appears in the multi-
function display.
You can accept a call at any time, even if you are
not in the Tel
Tel menu.
X Press the 6button on the steering wheel
to accept an incoming call.
Rejecting or ending a call You can reject or end a call any time even if you
are not in the Tel Telmenu.
X Press the ~button on the steering wheel
to reject or end an incoming call.
Selecting an entry in the phone book X
Press the =or; button on the steering
wheel to select the Tel
Telmenu.
X Press the 9,:ora button to
switch to the phone book.
X Authorise access to the phone book on the
phone.
X Press the 9or: button to select the
desired name.
or
X To begin rapid scrolling: press and hold the
9 or: button for longer than one sec-
ond.
Rapid scrolling stops when you release the
button or reach the end of the list.
X If only one telephone number is stored for
a name: press the 6ora button to
start dialling.
or
X If there is more than one number for a
particular name:
press the6ora
button to display the numbers.
X Press the 9or: button to select the
number you want to dial.
X Press the 6ora button to start dial-
ling. Menus and submenus
181On-board computer and displays Z

Service menu
Depending on the equipment fitted in the vehi-
cle, you have the following options in the Serv.
Serv.
menu:
R Calling up display messages in the message
memory (Y page 189)
R Checking the tyre pressure electronically
(Y page 270)
R Calling up the service due date
(Y page 242) Settings menu
Introduction Depending on the equipment fitted in the vehi-
cle, In the Settings Settings menu you have the follow-
ing options:
R Changing the E-CELL settings
R Changing the instrument cluster settings
R Changing the light settings
R Changing the vehicle settings
R Changing the convenience settings
R Restoring the factory settings
E‑CELL menu Departure time
In the E-CELL
E-CELL menu you can choose to cool
down or heat the vehicle interior for a prede-
fined departure time. If you have selected position
Pand the charging
cable is connected, the on-board computer dis- plays:
R the expected high-voltage battery charge
time or
R the RANGE PLUS charge status for the depar-
ture time set.
Changing the departure time
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press 9or: on the steering wheel to
select the E‑CELL E‑CELLmenu.
X Press 9or: to select Depart.
Depart. time
time.
X Press ato confirm.
You will see the selected setting.
X Press the :or9 button to select A
A, B
B
or Change C
Change C.
X Press ato confirm.
X Press =or; to select Depart.
Depart. time
time
Hours
Hours.
X Press the 9or: button to set the
hour.
X Press =or; to select Depart.
Depart. time
time
Minutes
Minutes.
X Press 9or: to set the minutes.
X Press ato confirm.
After changing from one menu to another, the departure time setting is stored.
Selecting the departure time
X Press the =or; button on the steering
wheel to select the Settings
Settings menu.
X Press 9or: on the steering wheel to
select the E‑CELL
E‑CELLmenu.
X Press 9or: to select Depart.
Depart. time
time.
X Press ato confirm.
X Press the :or9 button to select one
of the three departure times or Timer
Timeroff
off (no
timer active).
X Press ato confirm.
Charging with RANGE PLUS If you have selected position Pand the charging
cable is connected, the on-board computer dis- plays:
R the expected high-voltage battery charge
time or
R the RANGE PLUS charge status for the depar-
ture time set. 184
Menus and submenusOn-board computer and displays

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
Introduction
General notes Display messages appear in the multifunction display.
Display messages with graphic symbols are simplified in the Owner's Manual and may differ from
the symbols in the multifunction display.
Please respond in accordance with the display messages and follow the additional notes in this
Owner's Manual.
Certain display messages are accompanied by an audible warning tone or a continuous tone.
When the ignition is switched off, all display messages are deleted apart from some high-priority
display messages. Once the causes of the high-priority display messages have been rectified, these
display messages are deleted as well.
When you stop and park the vehicle, please observe the notes on:
R HOLD function (Y page 154)
R Parking (Y page 145)
Hiding display messages X
Press the aor% button on the steering wheel.
The multifunction display hides the display message.
The multifunction display shows high-priority display messages in red. Some high-priority display
messages cannot be hidden.
The multifunction display shows these messages continuously until the causes for the messages
have been remedied.
Message memory The on-board computer saves certain display messages in the
message memory. You can call up
the display messages:
X Press the =or; button on the steering wheel to select the Service
Service menu.
If there are display messages, the multifunction display shows 2 messages
2 messages, for example.
X Press the 9or: button to select the entry, e.g. 2 messages
2 messages.
X Press ato confirm.
X Press the 9or: button to scroll through the display messages. Display
messages
189On-board computer and displays Z

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

If it is permitted by law to operate communica-
tions equipment while the vehicle is in motion,
you may only do so if the traffic situation per-
mits. You may otherwise be distracted from the
traffic conditions, cause an accident and injure
yourself and others.
Excessive levels of electromagnetic radiation
may cause damage to your health and to the
health of others. The use of an exterior aerial
takes into consideration the scientific discus-
sion surrounding the possible health risk posed by electromagnetic fields.
Mercedes-Benz recommends the use of an
approved exterior aerial. This ensures:
R optimal mobile phone reception quality in the
vehicle
R that mutual interference between the vehicle
electronics and mobile phones is minimised
An exterior aerial has the following advantages:
R it conducts the electromagnetic fields gener-
ated by a wireless device to the exterior
R the field strength in the vehicle interior is
lower than in a vehicle that does not have an
exterior aerial
Information on retrofitting two-way radios and
mobile phones (RF transmitters) (Y page 280).
General notes There are various mobile phone brackets that
may be fitted in your vehicle; in some cases,
these are country-specific.
More information on suitable mobile phones,
mobile phone brackets and on connecting Blue-
tooth ®
-capable mobile phones to
COMAND Online/Audio 20 can be obtained:
R at your Mercedes-Benz Service Centre
R on the Internet at http://www.mercedes-
benz.com/connect
The functions and services available when you
use the phone depend on your mobile phone
model and service provider.
Using a mobile phone To connect a mobile phone to the exterior aerial
and charge it, insert it into the mobile phone
bracket. X
Open the telephone compartment
(Y page 226).
X Place the mobile phone bracket into the pre-
installed fitting; see the separate installation
instructions for the mobile phone fitting.
X Insert the mobile phone into the mobile phone
bracket; see the separate installation instruc- tions for the mobile phone fitting.
i The mobile phone can also be operated
without being in the bracket. However, the
charging function and aerial function are not
available.
In order to use Bluetooth ®
(SAP profile) on your
telephone module, you must first insert the tele-
phone module into the pre-installed fitting. This connects it to the exterior aerial. If you wish to
charge the mobile phone, then you must con-
nect it to a USB port.
Further information on the telephone module
with Bluetooth ®
(SAP profile) can be found in the
Digital Owner's Manual.
Operating the mobile phone You can operate the telephone using the
6
and ~ buttons on the multifunction steering
wheel. You can operate other mobile phone
functions via the on-board computer
(Y page 181).
When you remove the key from the ignition lock, the mobile phone is disconnected from the vehi-cle. You can then no longer make calls using the
hands-free system.
If a call is active and you remove the key from
the ignition lock, the conversation is transferred over to the mobile phone. It is then possible to
continue the conversation on the mobile phone. Features
237Stowing and features Z