wheel MERCEDES-BENZ B-CLASS 2012 Repair Manual

Backing up straight into a parking space
without turning the steering wheel
:
White lane with steering wheel straight
; Yellow guide line at a distance of
approximately 3 ft (1.0 m ) from the rear
of the vehicle
= Red guide line at a distance of
approximately
10 in (0.25 m) from the
rear of the vehicle
X With the help of white lane :

, check
whether the vehicle
will fit into the parking
space.
X Using the white lane as a guide, carefully
reverse until you reach the end position.
Red guide line = is then at the end of the
parking space. The vehicle is almost
parallel in the parking space.
Reverse perpendicular parking with the
steering wheel at an angle
X Drive past the parking space and bring the
vehicle to a standstill. Turning the steering wheel
:
Red lane indicating the route the vehicle
will take with the steering wheel in its
current position
; Parking space marking
X While the vehicle is at a standstill, turn the
steering wheel in the direction of the
parking space until the red lane reaches
parking space marking ;.
X Keep the steering wheel in that position
and back up carefully. Backing up with the steering wheel turned
:
Red lane indicating the route the vehicle
will take with the steering wheel in its
current position
X Stop the vehicle when it is almost exactly
in front of the parking space.
The white lane

should be as close to parallel
with the parking space marking as
possible. Driving systems
179
Driving and parking Z
ProCarManuals.com

Driving to the final position
:
White lane at current steering wheel angle
; Parking space marking
X Turn the steering wheel to the center
position while the vehicle is stationary. :
Red guide line at a distance of
approximately 10 in (0.25 m
) from the
rear of the vehicle
; White lane with steering wheel straight
= End of parking space
X Back up carefully until you have reached
the final position.
Red guide line :
is
then

at end of parking
space =. The vehicle is almost parallel in
the parking space. ATTENTION ASSIST
General notes ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways.
It is active in the range between 50 mph
(80 km/h) and 112 mph (180 km/h). If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take 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.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
R your personal driving style, e.g. steering
characteristics
R journey details, e.g. time of day and length
of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
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
acceleration
R if you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
R if you are currently using COMAND or
making a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed180
Driving systems
Driving and parking
ProCarManuals.com

Keeping Assist is merely an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
The Lane Keeping Assist does not keep the
vehicle in the lane.
The system may be impaired or may not
function if:
R
there is poor visibility, e.g. due to
insufficient illumination of
the road, or due
to snow, rain, fog or spray
R there is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
R the windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
R there are no, several or unclear lane
markings for a lane, e.g. in areas with road
construction work
R the lane markings are worn away, dark or
covered up, e.g. by dirt or snow
R the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
R the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
R the road is narrow and winding
R there are strong shadows cast on the lane
A warning may be given if a front wheel
passes over a lane marking. It will warn you
by means of intermittent vibration in the
steering wheel for up to 1.5 seconds.
Switching on Lane Keeping Assist X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard or Adaptive (Y page 195).
Symbol : appears in the multifunction
display.
If you drive at speeds above 40 mph
(60 km/h
) and lane markings are detected,
symbol : is highlighted. Lane Keeping
Assist is ready for use.
When Standard is selected, no warning
vibration occurs if:
R you switch on

the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
When Adaptive is selected, no warning
vibration occurs if:
R you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend.
R the road has very wide lanes, e.g. a
freeway.
R the system recognizes solid lane markings.
The warning vibration occurs later if:
R the road has narrow lanes.
R you cut the corner on a bend.184
Driving systems
Driving and parking
ProCarManuals.com

!
A display message
is shown if the coolant
temperature is too high.
If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolant temperature gage is in the
instrument cluster on the right-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †). Tachometer
! Do not drive in the overrevving range, as
this could damage the engine.
The red band

in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay special attention to road
conditions when temperatures are around
freezing point.
The outside temperature display is in the
multifunction display.
Changes in the outside temperature are
displayed after a short delay. Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated ( Y page 157):
The segments light up from the stored
speed to the maximum speed.
R DISTRONIC PLUS activated (Y page 159):
One or two segments in the set speed
range light up.
R DISTRONIC PLUS detects

a vehicle in front:The segments between the speed of the
vehicle in front and the stored speed light
up. Operating the on-board computer
Overview :
Multifunction display
; Switches on the Voice Control System;
see the separate operating instructions
= Right control panel
? Left control panel
A Back button
X To activate the on-board computer: turn
the SmartKey to position 1 in 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. Displays and operation
187
On-board computer and displays Z
ProCarManuals.com

A
Drive program (Y page 141)
B Transmission position ( Y page 141)
X To show menu bar ?: press the =
or ; button on the steering wheel.
Menu bar ? disappears after a few seconds.
Text field = shows the selected menu or
submenu as well as display messages.
i You can set the time using the audio
system or COMAND; see the separate
operating instructions.
The following messages may appear in the
multifunction display:
XjY Active Parking Assist (Y page 172)
CRUISE Cruise Control (Y page 157)
è Rear window wiper ( Y page 112)
_ Adaptive Highbeam Assist
(Y page 102)
À ATTENTION ASSIST (Y page 180)
à Lane Keeping Assist (Y page 183)
ë HOLD function ( Y page 167)
Ä Distance warning function
(Y page 233) Menus and submenus
Menu overview
Operating the on-board computer
(Y page 187).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip menu (Y page 189)
R Navi menu (navigation instructions)
(Y page 191)
R Audio menu (Y page 192)
R Tel (telephone) menu ( Y page 193)
R DriveAssist (Assistance) menu
(Y page 194)
R Serv menu (Y page 196)
R Sett menu (Y page 196) The
Audio, Navi and
Tel
menus differ slightly
in vehicles with Audio 20 and in vehicles with
COMAND. The examples given in this
Operator's Manual apply to vehicles
equipped with COMAND. Trip menu
Standard display X
Press and hold the % button on the
steering wheel until the Trip menu with
trip odometer : and odometer ; is
shown.
Trip computer "From Start" or "From
Reset" Example: trip computer "From Start"
:
Distance
; Time
= Average speed
? Average fuel consumption
X Press the = or ; button on the
steering wheel to select the Trip menu.
X Press the 9 or : button to select
From Start or From Reset.
The values in the From Start submenu are
calculated from the start of a journey, while
the values in the From Reset submenu are
calculated from the last time the submenu
was reset ( Y page 190). Menus and submenus
189
On-board computer and displays Z
ProCarManuals.com

The From Start trip computer is
automatically reset when:
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.
If the value exceeds 9,999 hours or
99,999 miles, the From Reset trip computer
is automatically reset.
ECO display Example: ECO display
X
Press the = or ; button on the
steering wheel to select the Trip menu.
X Press 9 or : to select ECO
DISPLAY.
If the ignition remains switched off for longer
than four hours, the ECO display will be
automatically reset.
Further information on the ECO display
(Y page 153).
Displaying the range and current fuel
consumption X
Press the = or ; button on the
steering wheel to select the Trip menu.
X Press the 9 or : button to select
current fuel consumption ; and
approximate range :. Approximate range : is calculated
according to
the
current driving style and the
amount of fuel in the tank. If there is only a
small amount of fuel left in the fuel tank, the
display shows a vehicle being refueled C
instead of range :.
Digital speedometer X
Press the = or ; button on the
steering wheel to select the Trip menu.
X Press the 9 or : button to select
digital speedometer :.
Resetting values Example: resetting the trip computer "From Start"
You can reset the values of the following
functions:
R
Trip odometer
R "From Start" trip computer
R "From Reset" trip computer
R ECO display
X Press the = or ; button on the
steering wheel to select the Trip menu.
X Press the 9 or :
button to select the
function that you wish to reset.
X Press the a button.
X Press the : button to select Yes and
press a to confirm. 190
Menus and submenus
On-board computer and displays
ProCarManuals.com

i
When you reset the values in the "ECO
display", the values in the trip computer
"From start" are likewise reset. When you
reset the values
in the trip computer "From
start", the values in the "ECO display" are
likewise reset. Navigation system menu
Displaying navigation instructions X
Switch on Audio 20 with Becker ®
MAP
PILOT or COMAND (see the separate
operating instructions).
X Press the = or ; button on the
steering wheel to select the Navi menu.
In the Navi menu, the multifunction display
shows navigation instructions. For more
information, see the separate operating
instructions.
Route guidance not active :
Direction of travel
; Current road
Route guidance active No change of direction announced
:
Distance to the destination
; Distance to the next change of direction =
Current road
? "Follow the road's course" symbol
Change of direction announced without a
lane recommendation :
Road into which the change of direction
leads
; Distance to change of direction and visual
distance display
= Symbol for change of direction
When a change of direction is announced, you
will see
symbol =

for the change of direction
and distance graphic ;. The distance
indicator shortens towards the top of the
display as you approach the point of the
announced change of direction.
Change of direction announced with a
lane recommendation :
Road into which the change of direction
leads
; Distance to change of direction and visual
distance display
= Lane recommendation
? New lane during a change of direction
A Uninterrupted lane
B Symbol for change of direction
On multilane roads, the system can display
lane recommendation
=

for the next change
of direction. During the change of direction,
additional lanes may be displayed. Menus and submenus
191
On-board computer and displays Z
ProCarManuals.com

Lane recommendations are only displayed if
the relevant data is available on the digital
map.
Other status indicators of the
navigation system
R
O: you have
reached the destination or an
intermediate destination.
R New Route... or Calculating Route:
calculating a new route
R Off Map or Off Mapped Road : the vehicle
position is outside the area of the digital
map (off-map position).
R No Route : no route could be calculated to
the selected destination. Audio menu
Selecting a radio station :
Waveband
; Station frequency with memory position
i The memory position is only displayed
along with station ; if this has been
stored.
X Switch on the audio system or COMAND
and select Radio; see the separate
operating instructions.
X Press the = or ; button on the
steering wheel to select the Audio menu.
X To select a stored station: briefly press
the 9 or : button. X
To select a station from the station
list: press and briefly hold the 9
or : button.
If no station list is received:
X To select a station using the station
search: press and briefly hold the 9
or : button.
i For information on changing waveband
and storing stations, see the separate
operating instructions.
i SIRIUS XM satellite radio functions like a
normal radio.
For more information on satellite radio
operation, see the separate operating
instructions.
Operating an audio player or audio
media CD changer display (example)
:
Current CD in the CD changer
; Current title
Audio data from various audio devices or
media can be played, depending on the
equipment installed in the vehicle.
X Switch on the audio system or COMAND
and activate audio CD/DVD mode or MP3
mode; see the separate operating
instructions.
X Press the = or ; button on the
steering wheel to select the Audio menu.
X To select the next/previous track:
briefly press the 9 or : button.
X To select a track from the track list
(rapid scrolling): press and hold the
9 or : button until desired
track ; has been reached.192
Menus and submenus
On-board computer and displays
ProCarManuals.com

If you press and hold
9 or :, the
rapid scrolling speed is increased. Not all
audio drives or data carriers support this
function.
If track information is stored on the audio
device or medium, the multifunction display
will show the number and title of the track.
The current track does not appear in audio
AUX mode (Auxiliary audio mode: external
audio source connected).
Video DVD operation DVD changer display (example)
:
Current DVD in the DVD changer
; Current scene
X Switch on COMAND and select video DVD;
see the separate operating instructions.
X Press the = or ; button on the
steering wheel to select the Audio menu.
X To select the next/previous scene:
briefly press the 9 or : button.
X To select a scene from the scene list
(rapid scrolling): press and hold the
9 or : button until desired
scene ; has been reached. Telephone menu
Introduction G
WARNING
If you operate information systems and
communication equipment integrated in the
vehicle 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
equipment when the vehicle is stationary.
When telephoning, you must observe the
legal requirements for the country in which
you are currently driving.
X Switch on your mobile phone and audio
system or COMAND, see the separate
operating instructions.
X Establish a Bluetooth ®
connection to the
audio system or COMAND; see the
separate operating instructions.
X Press the = or ; button on the
steering wheel to select the Tel menu.
You will see one of the following display
messages in the multifunction display:
R Phone READY or the name of the network
provider: the mobile phone has found a
network and is ready to receive.
R Phone No Service: there is no network
available or the mobile phone is searching
for a network.
Accepting a call Example: incoming call
X
Press the 6 button on the steering
wheel to accept an incoming call.
If someone calls you when you are in the
Tel menu, a display message appears in the
multifunction display.
If you are not in the Tel menu, you can still
accept a call. Menus and submenus
193
On-board computer and displays Z
ProCarManuals.com

Rejecting or ending a call
X
Press the ~ button on the steering
wheel.
If you are not in the Tel menu, you can still
reject or end a call.
Dialing a number from the phone book X
Press the = or ; button on the
steering wheel to select the Tel menu.
X Press the 9, : or a button to
switch to the phone book.
X Press the 9
or : button to select the
desired name.
To start scrolling rapidly, press and hold the
9 or : button for longer than one
second.
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 6 or a button
to start dialing.
or
X If there is more than one number for a
particular name: press the 6 or a
button to display the numbers.
X Press the 9
or :
button to select the
number you want to dial.
X Press the 6 or a button to start
dialing.
or
X If you do not want to make a call: press
the ~ or % button.
Redialing The on-board computer saves the last names
or numbers dialed in the redial memory.
X
Press the = or ; button on the
steering wheel to select the Tel menu.
X Press the 6 button to switch to the
redial memory.
X Press the 9 or :
button to select the
desired name or number. X
Press the 6 or a button to start
dialing.
or
X If you do not want to make a call: press
the ~ or % button. Assistance menu
Introduction In the
DriveAssist menu, you have the
following options:
R showing the distance display
R activating/deactivating ESP ®
R activating/deactivating the distance
warning function
R activating/deactivating ATTENTION
ASSIST
R activating/deactivating Blind Spot Assist
R activating/deactivating Lane Keeping
Assist
Showing the distance display X
Press the = or ; button on the
steering wheel to select the DriveAssist
menu.
X Press the 9 or : button to select
Distance Display.
X Press the a button.
The DISTRONIC PLUS distance display
appears in the multifunction display
(Y page 163).
Deactivating/activating ESP ® Further information about ESP
®
(Y page 62). 194
Menus and submenus
On-board computer and displays
ProCarManuals.com