MERCEDES-BENZ B-Class 2017 W246 Owner's Manual

(200 km/h) range. If ATTENTION ASSIST
detects typical indicators of fatigue or increas-
ing lapses in concentration on the part of the
driver, it suggests taking a break.
Important safety notes ATTENTION ASSIST is only an aid to the driver. It
might not always recognize fatigue or increasing inattentiveness in time or fail to recognize them
at all. The system is not a substitute for a well-
rested and attentive driver.
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or not
occur at all:
R if the length of the journey is less than approx-
imately 30 minutes
R if the road condition is poor, e.g. if the surface
is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration
R if you are predominantly driving slower than
37 mph (60 km/h) or faster than 125 mph
(200 km/ h)
R if the time has been set incorrectly
R in active driving situations, such as when you
change lanes or change your speed
ATTENTION ASSIST is reset when you continue
your journey and starts assessing your tiredness
again if:
R you switch off the engine
R you take off your seat belt and open the driv-
er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level You can have current status information dis-
played in the assistance menu (Y
page 162) of
the on-board computer.
X Select the Assistance display for Attention
Assist using the on-board computer
(Y page 162).
The following information is displayed: R Length of the journey since the last break.
R The Attention Attention Level
Leveldetermined by ATTEN-
TION ASSIST, 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 output a warn-
ing, the System Passive System Passive message appears.
The bar display then changes the display,
such as when you are driving at a speed below 37 mph (60 km/h) or above 124 mph
(200 km/h).
Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer (Y page 163).
The system determines the attention level of
the driver depending on the setting selected:
Standard Standard selected: the sensitivity with which
the system determines the attention level is set to normal.
Sensitive
Sensitive selected: the sensitivity is set
higher. The attention level detected by Attention
Assist is adapted accordingly and the driver is
warned earlier.
When ATTENTION ASSIST is deactivated, the
00D7 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 stopped. The sensitivity selected cor-
responds to the last selection activated (stand-
ard/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. Driving systems
149Driving and parking Z

X
If necessary, take a break.
X Confirm the message by pressing the 0076
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. 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.
Vehicles with the COMAND multimedia sys-
tem: if a warning is output in the multifunction
display, a service station search is performed in the multimedia system. You can select a servicestation and navigation to this service station will
then begin. This function can be activated or
deactivated in the multimedia system; see the
Digital Operator's Manual. Blind Spot Assist
General notes Blind Spot Assist monitors the areas on either
side of the vehicle that are not visible to the
driver with two lateral, rear-facing radar sen-
sors. A warning display in the exterior mirrors
draws your attention to vehicles detected in the
monitored area. If you then switch on the cor-
responding turn signal to change lane, you will
also receive an optical and audible warning.
Blind Spot Assist supports you from a speed of
approximately 20 mph (30 km/h).
Important safety notes G
WARNING
Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance. Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
i USA only:
This device has been approved by the FCC as a "Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removing, tampering with, or
altering the device will void any warranties,
and is not permitted by the FCC. Do not tam-
per with, alter, or use in any non-approved
way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
Radar sensors The radar sensors for Blind Spot Assist are inte-
grated into the rear bumper. Make sure that the
bumpers are free from dirt, ice or slush. The
sensors must not be covered, for example by
cycle racks or overhanging loads. Following a
severe impact or in the event of damage to the
bumpers, have the function of the radar sensors
checked at a qualified specialist workshop.
Blind Spot Assist may no longer work properly.
Monitoring range of the sensors In particular, the detection of obstacles can be
impaired if:
R there is dirt on the sensors or anything else
covering the sensors
R there is poor visibility, e.g. due to fog, heavy
rain or snow
R a narrow vehicle traveling in front, e.g. a
motorbike or bicycle
R the road has very wide lanes
R the road has narrow lanes
R you are not driving in the middle of the lane
R there are barriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to 10 ft
(3 m) behind your vehicle and directly next to it.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the 150
Driving systemsDriving and parking

case if the vehicles are driving on the inner side
of their lane.
Due to the nature of the system:
R warnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
R warnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Warning display 0043
Warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
When Blind Spot Assist is activated, indicator
lamp 0043in the exterior mirrors lights up yellow
at speeds of up to 20 mph (30 km/h). At speeds
above 20 mph (30 km/h), the indicator lamp
goes out and Blind Spot Assist is operational.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp 0043on the correspond-
ing side lights up red. This warning is always
emitted when a vehicle enters the blind spot
monitoring range from behind or from the side.
When you overtake a vehicle, the warning only
occurs if the difference in speed is less than
7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Blind Spot Assist is no longer active.
The brightness of the indicator/warning lamps
is adjusted automatically according to the ambi-
ent light. Collision warning If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds. Red warning lamp 0043flashes. If the turn
signal remains on, vehicles detected are indica-
ted by the flashing of red warning lamp 0043.
There are no further warning tones.
Switching on Blind Spot Assist X
Make sure that Blind Spot Assist is activated
in the on-board computer (Y page 163).
X Turn the SmartKey to position 2in the ignition
lock.
Warning lamps 0043in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow. Driving systems
151Driving and parking Z

Important safety notes
G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle while driving, you will be distracted from
traffic conditions. You could also lose control of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the on-board computer. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
The on-board computer only shows messages or
warnings from certain systems in the multifunc- tion display. You should therefore make sure
your vehicle is operating safely at all times.
If the operating safety of your vehicle is
impaired, pull over as soon as it is safe to do so. Contact a qualified specialist workshop.
For an overview, see the instrument panel illus-
tration (Y page 32). Displays and operation
Instrument cluster lighting
The light sensor in the instrument cluster auto-
matically controls the brightness of the multi-
function display. In daylight, the displays in the
instrument cluster are not illuminated.
The lighting in the instrument cluster, in the dis-
plays and the controls in the vehicle interior can be adjusted using the brightness control knob. The brightness control knob is located on the
bottom left of the instrument cluster
(Y
page 32).
X Turn the brightness control knob clockwise or
counter-clockwise.
If the light switch is set to the 0058,0060or
0058 position, the brightness is dependent
upon the brightness of the ambient light. READY indicator
When the drive system is started and the vehicle
is ready to drive, READY indicator 0043appears in
the multifunction display. This indicates that the vehicle is operational. Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the temperature measured and
does not record the road temperature.
The outside temperature display is in the multi-
function display (Y page 155).
There is a short delay before a change in outside
temperature appears in the multifunction dis-
play. E-CELL display
G
WARNING
There is a risk of an accident if you accelerate or overtake when the power output of the
drive system is reduced.
You should therefore adapt your driving style
and drive particularly carefully. Charge the
high-voltage battery at a charge station imme- diately. 152
Displays and operationOn-board computer and displays

X
Start the drive system (Y page 111).
E-CELL display 0043shows the available power
of the drive system.
Under normal operating conditions, E-CELL dis-
play 0043is in the maximum range.
The power output available may deviate from
the maximum range in the event of:
R very high or low outside temperatures
R very high performance requirements for a lon-
ger period of time
R very low condition of charge of the high-volt-
age battery
R a malfunction in the drive system
The reduced power output can be improved by
charging the high-voltage battery (Y page 117).Power display
Power display
0043contains two areas:
R Area above 0
Here, the current amount of power that the
drive system is feeding to the wheels is dis-
played.
R Area below 0
Here, the vehicle's recuperative power in
overrun mode is displayed. If the needle for the power display is in the
OFF
position, the vehicle is not ready to drive
because:
R the drive system has not yet started
R the charging cable is still connected to the
vehicle socket
R there is insufficient power available from the
high-voltage battery
R the vehicle's high-voltage electrical system is
malfunctioning
When the drive system is started, the needle in
the power display moves to position 0. The dis-
play Ready Ready appears in the lower multifunction
display. The vehicle is ready to drive.
The boost area for maximum acceleration can
be reached using kickdown (Y page 114).
The braking performance of the electric motor
using recuperative braking is, in some operating
modes, either reduced or not effective:
R when the condition of charge of the high-volt-
age 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 necessary, counteract the reduced regenera-
tive braking effect by applying the brake your-
self. Condition of charge display
Condition of charge display
0043shows the con-
dition of charge of the high-voltage battery.
The charge value is shown as a percentage in the
Energy Flow Energy Flow menu in the instrument cluster
(Y page 157). Displays and operation
153On-board computer and displays Z

i
The
Energy Flow
Energy Flow menu can also be dis-
played in the COMAND/Audio display.
The condition of charge of the high-voltage bat- tery has dropped into the reserve range if the
drive system is running and:
R the Drive Battery Reserve Level
Drive Battery Reserve Level mes-
sage appears in the display
R the indicator lamp in the instrument cluster
lights up
Charge the high-voltage battery from a condi-
tion of charge of less than 20% at:
R an electrical outlet
R a charging station
The braking performance of the electric motor
using recuperative braking is, in some operating
modes, either reduced or not effective:
R when the condition of charge of the high-volt-
age battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
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. Operating the on-board computer
Overview 0043
Multifunction display
0044 Vehicles with Audio 20: switches on voice-
operated control for navigation (see manu-
facturer's operating instructions)
Vehicles with COMAND: switches on the
Voice Control System (see the separate
operating instructions)
0087 Right control panel
0085 Left control panel
0083 Back button
X To activate the on-board computer: turn
the SmartKey to position 1in the ignition lock.
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel. 154
Displays and operationOn-board computer and displays

Left control panel
0059
0065 R
Calls up the menu and menu bar 0063
0064 Press briefly:
R Scrolls in lists
R Selects a submenu or function
R In the Audio Audio menu: selects the
previous or next station, when the
preset list or station list is active,
or an audio track or video scene
R In the Tel
Tel(Telephone) menu:
switches to the phone book and
selects a name or telephone num-
ber 0063
0064 Press and hold:
R
In the Audio Audio menu: selects a pre-
set list or a station list in the
desired frequency range or an
audio track or video scene using
rapid scrolling
R In the Tel
Tel (Telephone) menu:
starts rapid scrolling if the phone
book is open 0076 R
Confirms the selection or display
message
R In the Tel
Tel (Telephone) menu:
switches to the telephone book
and starts dialing the selected
number Right control panel
0063 R
Mute 0081
0082 R
Adjusts the volume 0076 R
Rejects or ends a call
R Exits the telephone book/redial
memory 0061 R
Makes or accepts a call
R Switches to the redial memory Back button
0038 Press briefly:
R Back
R Vehicles with Audio 20:
Switches off voice-operated con-
trol for navigation (see manufac-
turer's operating instructions)
R Vehicles with COMAND:
Switches off the Voice Control
System (see the separate operat-
ing instructions)
R Hides display messages or calls up
the last Trip
Trip menu function used
R Exits the telephone book/redial
memory 0038 Press and hold:
R
Calls up the standard display in the
Trip Trip menu Multifunction display
0043
Range
0044 Time
0087 Text field
0085 Menu bar
0083 Drive program
0084 Transmission position (Y page 112)
006B Permanent display: outside temperature or
speed (Y page 165) Displays and operation
155On-board computer and displays Z

X
To display menu bar 0085: press the0059
or 0065 button on the steering wheel.
If you do not press the buttons any longer,
menu bar 0085is faded out after a few seconds.
Text field 0087shows the selected menu or sub-
menu as well as display messages.
i Set the time using the multimedia system;
see the separate operating instructions.
The following messages may appear in the
multifunction display:
R 005D Parking Pilot (Y page 142)
R CRUISE
CRUISE Cruise control (Y page 136)
R 00D9 HOLD function (Y page 138) Menus and submenus
Menu overview
Using the 0059or0065 button on the steering
wheel, open the menu bar.
Operating the on-board computer (Y page 154).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip
Trip menu (Y page 156)
R Navi Navi menu (navigation instructions)
(Y page 158)
R Audio
Audio menu (Y page 160)
R Tel
Tel menu (telephone) (Y page 160)
R DriveAssist
DriveAssist menu (assistance)
(Y page 162)
R Serv.
Serv. menu (Y page 163)
R Sett.
Sett. menu (settings) (Y page 163)
The displays for the Audio
Audio,Navi
NaviandTel
Tel menus
may differ slightly to those in your vehicle.
The examples given in this Operator's Manual
apply to vehicles equipped with COMAND. Trip menu
Standard display X
Press and hold the 0038button on the steer-
ing wheel until the Trip Tripmenu with trip odom-
eter 0043and odometer 0044appears.
Trip computer "From Start" or "From
Reset" 0043
Distance
0044 Driving time
0087 Average speed
0085 Average electrical consumption
X Press the 0059or0065 button on the steering
wheel to select the Trip Tripmenu.
X Press the 0063or0064 button to select
From Start
From Start orFrom Reset
From Reset.
The values in the From
FromStart
Start submenu are cal-
culated from the start of a journey whilst the
values in the From Reset From Resetsubmenu are calcu-
lated from the last time the submenu was reset
(Y page 158).
In the following cases, the trip computer is auto-
matically reset From Start
From Start:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 miles have been exceeded.
When 9,999 hours or 99,999 miles have been
exceeded, the trip computer is automatically
reset From Reset From Reset.
ECO display X
Press the 0059or0065 button on the steering
wheel to select the Trip Tripmenu.
X Press the 0063or0064 button to select ECO ECO
DISPLAY
DISPLAY.
If the ignition remains switched off for longer
than four hours, the ECO display will be auto-
matically reset.
For more information on the ECO display, see
(Y page 132). 156
Menus and submenusOn-board computer and displays

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 0059or0065 button on the steering
wheel to select the Trip
Trip menu.
X Confirm by pressing 0076on the steering
wheel.
X Use 0064 or0063 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 color 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.
The arrows indicating energy flow are not
shown.
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
being charged.
The arrows for the energy flow are shown in
green. Menus and submenus
157On-board computer and displays Z

Displaying the range and current con-
sumption X
Press the 0059or0065 button on the steering
wheel to select the Trip
Tripmenu.
X Press 0063or0064 to select the display with
approximate range and current fuel consump-
tion.
The approximate range depends on the con-
dition of charge of the high-voltage battery
and your current driving style. If the high-volt-
age battery condition of charge is low, the
display shows a vehicle being charged instead
of the approximate range.
The specified values for range depend on the
driving program selected and may vary as a
result of:
R higher and lower outside temperatures
R the style of driving
R activated electrical consumers
Digital speedometer X
Press the 0059or0065 button on the steering
wheel to select the Trip Tripmenu.
X Press the 0063or0064 button to select the
digital speedometer.
Resetting values X
Press the 0059or0065 button on the steering
wheel to select the Trip
Tripmenu.
X Press the 0063or0064 button to select the
function that you wish to reset. X
Press 0076to confirm.
X Press 0064to select Yes Yesand press 0076to
confirm.
You can reset the values of the following func-
tions: R Trip odometer
R "From Start" trip computer
R "From Reset" trip computer
R ECO display
If you reset the values in the ECO display, the
values in the "From Start" trip computer are also
reset. If you reset the values in the "From Start" trip computer, the values in the ECO display arealso reset. Navigation system menu
Displaying navigation instructions In the
Navi Navimenu, the multifunction display
shows navigation instructions.
You can find further information on navigation in
the separate multimedia system operating
instructions.
X Switch on the multimedia system (see sepa-
rate operating instructions).
X Press the 0059or0065 button on the steering
wheel to select the Navi
Navi menu.
Route guidance not active 0043
Direction of travel
0044 Current road 158
Menus and submenusOn-boa
rdcompu ter and displays