MERCEDES-BENZ B-CLASS 2012 Owners Manual

The vehicle data is sent to the Customer
Assistance center.
Depending on what the customer service
representative agreed with you, the voice
connection is re-established
after the transfer
is complete. If necessary, you will be
contacted at a later time by another means,
e.g. by E-Mail or telephone.
Further functions of the vehicle remote
malfunction diagnosis include, for example:
R transfer of service data to the Customer
Assistance center. If a service is overdue,
the COMAND display shows a message
about various special offers at your
workshop.
R monthly status information E-Mail on oil
level, air pressure, maintenance, brakes,
etc. If applicable, you will receive
information on special offers in the E-Mail.
USA only: this information can also be
called up under "Owners Online" at http://
www.mbusa.com.
Information on the data stored in the vehicle
(Y page 25).
Information on roadside assistance
(Y page 22).
Downloading routes Downloading routes allows you to transfer
and save predefined routes in the navigation
system. To
do

this, an SD memory card must
be inserted into the COMAND system. If no
SD memory card is inserted, you must insert
the card into the card slot on the COMAND
system before saving.
A route can be prepared and sent either by a
customer service representative or via the
mbrace portal on the Internet. Each route can
include up to 20 way points. When a route has
been received by the navigation system, the
'Route name' has been saved to
memory card. Do you want to start
route guidance? message appears on the
COMAND display. The route is saved to the
SD memory card. X
To start route guidance: select Yes.
An overview of the route is shown in the
display.
i If you select No, the saved route can be
called up later in the navigation menu.
X Select Start.
Route guidance is started.
i Downloaded and
saved

data can be called
up again in COMAND.
You can find further information in the
separate COMAND operating instructions.
Speed alert You can define the upper speed limit, which
must not be exceeded by the vehicle. If this
selected speed is exceeded by the vehicle, a
message will be sent to the Customer
Assistance center. The Customer Assistance
center then
forwards

this information to you.
You can select the way in which you receive
this information beforehand. Possible options
include SMS, E-Mail or an automated call.
The data which is sent to the Customer
Assistance center contains the following
information:
R the location where the speed limit was
exceeded
R the time at which the speed limit was
exceeded
R the selected speed limit which was
exceeded
Geo fencing Geo fencing allows you to select areas which
the vehicle should

not enter or leave. You will
be informed if the vehicle crosses the
boundaries of the selected areas. You can
select the way in which you receive this
information beforehand. Possible options
include SMS, E-Mail or an automated call.
The area can be determined as either a circle
or a polygon with a maximum of ten corners.
You can specify up to ten areas Features
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simultaneously. Different settings are
possible for each area.
USA only: these settings can be called up
under "Owners Online" at http://
www.mbusa.com.
Alternatively, you can trigger an MB Info call
and inform the customer service
representative that you wish to activate geo
fencing.
Currently inactive areas can be activated by
SMS.
Triggering the vehicle alarm
With this function, you can trigger the
vehicle's panic alarm via SMS. An alarm
sounds and the exterior lighting flashes.
Depending on the setting, the panic alarm
lasts five or ten seconds. Afterwards, the
alarm switches off.
Garage door opener
Important safety notes G
WARNING
When you operate or program the garage door
with the integrated garage door opener,
persons in the range of movement of the
garage door can
become trapped or struck by
the garage door. There is a risk of injury.
When using the integrated garage door
opener, always make sure that nobody is
within the range of movement of the garage
door. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases

leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
The HomeLink ®
garage door opener
integrated in the rear-view mirror allows you to operate up to three different door and gate
systems.
Only operate garage doors using the
integrated garage door opener if:
R
they are equipped with a safety stop and
reverse feature, and
R they conform to the current U.S. safety
standards.
When programming a garage door opener,
park vehicle outside the garage.
i Certain garage door drives are
incompatible with the integrated garage
door opener. If you have difficulty
programming the integrated garage door
opener, contact an authorized Mercedes-
Benz Center.
Alternatively, you can call the following
telephone assistance services:
R USA: Mercedes-Benz Customer
Assistance Center at
1-800-FOR-MERCedes
R Canada: Customer Service at
1-800-387-0100
R HomeLink ®
hotline 1-800-355-3515
(free of charge)
More information on HomeLink ®
and/or
compatible products is also available
online at http://www.homelink.com.
i Notes on the declaration of conformity
( Y

page 23).
Programming Programming buttons
Observe the "Important safety notes"
(Y page 260).260
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Integrated garage door opener in the rear-view
mirror
Garage door remote control
A is not part of
the integrated garage door opener.
X The first time before programming, clear
the integrated garage
door opener memory
(Y page 263).
X Turn the SmartKey to position 2 in the
ignition lock.
X Press and hold one of buttons ; to ? on
the integrated garage door opener.
After a short

time, indicator lamp : lights
up yellow.
i Indicator lamp
:

lights up yellow as soon
as button ;, = or ? is programmed for
the first time. If the selected button has
already been programmed, indicator
lamp : will only light up yellow after ten
seconds have elapsed.
X Release button ;, = or ?. Indicator
lamp : flashes yellow.
X Point garage door remote control A
towards buttons ; to ? on the rear-view
mirror at a distance of 2 to 8 inches (5 to
20 cm).
i The required distance between remote
control A and the integrated garage door
opener depends on the garage door drive
system. Several attempts might be
necessary. You should test every position
for at least 25 seconds before trying
another position. X
Press
and hold button
B on remote
control
A until indicator lamp : lights up green.
If indicator lamp : lights up green or
flashes, then programming has been
successful.
X Release button B on remote

control A for
the garage door drive system.
X If indicator lamp : lights up red: repeat
the programming procedure for the
corresponding button on the rear-view
mirror. When doing so, vary the distance
between remote control A and the rear-
view mirror.
i If the indicator lamp flashes green after
successful programming, the garage door
system is using a rolling code. After
programming, you must synchronize the
garage door opener integrated in the rear-
view mirror
with

the receiver of the garage
door system.
Synchronizing the rolling code
Observe the "Important safety notes"
(Y page 260).
Your vehicle must be within reach of the
garage door or exterior gate drive. Make sure
that neither your vehicle nor any persons/
objects are present within the sweep of the
door or gate.
X Turn the SmartKey to position 2 in the
ignition lock.
X Press the program button of the door or
gate drive (see the door or gate drive
operating instructions, e.g. under
"programming of additional remote
controls").
i Usually, you now have 30seconds to
initiate the next step.
X Press previously programmed button ;,
=

or ? of the integrated garage door
opener until the door closes.
The rolling code synchronization is then
complete. Features
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Notes on programming the remote
control
Canadian radio frequency laws require a
"break" (or interruption) of the transmission
signals after
broadcasting
for a few seconds.
Therefore, these signals may not last long
enough for the integrated garage door
opener. The signal is not recognized during
programming. Comparable with Canadian
law, some U.S. garage door openers also
feature a "break".
Proceed as follows:
R if you live in Canada
R if you have difficulties programming the
garage door opener (regardless of where
you live) when using the programming
steps
X Press and hold one of buttons ; to ? on
the integrated garage door opener.
After a short

time, indicator lamp : lights
up yellow.
X Release the button.
Indicator lamp : flashes yellow.
X Press button B of garage door remote
control A for two

seconds, then release it
for two seconds.
X Press button B again for two seconds.
X Repeat this sequence on button B of
remote control A until indicator lamp :
lights up green.
If indicator lamp : turns red, repeat the
process.
X Continue with the other programming
steps (see above).
Problems when programming
If you are experiencing problems
programming the integrated garage door
opener on the rear-view mirror, take note of
the following instructions:
R Check the
transmitter

frequency of garage
door drive remote control A. This can
usually be found on the back of the remote
control. The integrated garage door opener is
compatible with devices that have units
which operate in the frequency range of
280to 433
MHz.
R Replace the batteries in garage door
remote control A. This increases the
likelihood that garage door remote control
A

will transmit a strong and precise signal
to the integrated garage door opener in the
rear-view mirror.
R When programming, hold remote control
A at varying distances and angles from the
button that you are programming. Try
various angles at a distance between 2and
12 inches (5to 30 cm) or at the same angle
but at varying distances.
R If another remote control for the same
garage door drive is available, repeat the
same programming steps with this remote
control. Before performing these steps,
make sure that new batteries have been
installed in garage door drive remote
control A.
R Note that some remote controls only
transmit for a limited amount of time (the
indicator lamp on the remote control goes
out). Press button B on remote control
A again before transmission ends.
R Align the antenna cable of the garage door
opener unit. This can improve signal
reception/transmission.
Opening/closing the garage door After it has been programmed, the integrated
garage door opener performs the function of
the garage door system remote control.
Please also read the operating instructions
for the garage door system.
X
Turn the SmartKey to position 2 in the
ignition lock.
X Press button ;, = or ? which you have
programmed to operate the garage door.
Garage door system with a fixed code:
indicator lamp : lights up green.262
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Garage door system with a rolling code:
indicator lamp
: flashes green.
i The transmitter will transmit a signal as
long as the button is pressed. The
transmission is halted after a maximum of
ten seconds and indicator lamp : lights
up yellow. Press
button ;, = or ? again
if necessary.
Clearing the memory X
Turn the SmartKey to position 2 in the
ignition lock.
X Press buttons ; and ?.
The indicator lamp lights up yellow.
X Press and hold buttons ; and ?
until the
indicator lamp turns green.
i Make sure that you clear the memory of
the integrated garage door opener before
selling the vehicle. Compass
Calling up the compass The compass displays in which compass
direction the vehicle is currently traveling: N,
NE, E, SE, S, SW, W or NW.
To receive a correct display in rear-view
mirror :, the compass must be calibrated
and the magnetic field zone set. Setting the compass X
Determine your position using the following
zone maps. North America zone map
South America zone map Features
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X
Push a round pen into opening
=(Y page 263) for approximately three
seconds.
The zone currently selected appears in
compass display ;(Y page 263).
X To select the zone: push
a round pen into
opening =(Y page 263) until the desired
zone is selected.
If, after a few seconds, the display in
compass display ;(Y page 263) changes
direction, the zone has been selected.
Calibrating the compass X
Make sure that there is sufficient space for
you to drive in a circle without impeding
traffic.
In order to calibrate the compass correctly,
do the following:
R calibrate the compass in the open and not
in the vicinity of steel structures or high-
voltage transmission lines.
R switch off electrical

consumers such as the
climate control, windshield wipers or rear
window defroster.
R close all doors and the tailgate.
X Switch on the ignition.
X Push a round pen into opening
=(Y page 263) for approximately six
seconds, until symbol C is shown in
compass display ;(Y page 263).
X Drive your vehicle in a full circle at
approximately 3 mph (5 km/h) to 6 mph
(10 km/h

).
When the calibration has successfully been
completed, the current direction is shown
in compass display ;(Y page 263).Floormat on the driver's side
G
WARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct a depressed pedal. The operating and road safety of the vehicle
is jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance
for

the pedals. Do not use
loose floormats. X
Slide the seat backwards.
X To install: place the floormat in the
footwell.
X Press safety catch knobs : onto
retainers ;.
X To remove: pull the floormat off
retainers ;.
X Remove the floormat.264
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Useful information ............................
266
Engine compartment ........................ 266
Maintenance ...................................... 270
Care .................................................... 271 265Maintenance and care
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Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note
that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: ( Y page 24).Engine compartment
Hood
Important safety notes G
WARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. G
WARNING
When opening and closing the hood, it may
suddenly fall into

the closed position. There is
a risk of injury to persons within range of
movement of the hood.
Open and close the hood only when no one is
within its range of movement. G
WARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of

the exhaust system, can become
very hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following. G
WARNING
Opening the hood when the engine is
overheated or when there is a fire in the
engine compartment could

expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department. G
WARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when

the ignition is off. There
is a risk of injury.
If you need to do any work inside the engine
compartment,
R switch off the ignition
R never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
R keep clothing away from moving parts G
WARNING
The ignition system and the fuel injection
system work under

high voltage. If you touch
components which are under voltage, you
could get an electric shock. There is a risk of
injury.
Never touch components of the ignition
system or fuel injection system when the
ignition is switched on.
Opening the hood G
WARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured
by the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood. 266
Engine compartment
Maintenance and care
ProCarManuals.com

!
Make sure that
the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood. X
Make sure that the windshield wipers are
switched off.
X Pull release lever : on the hood.
The hood is released. X
Reach into the gap between the hood and
the radiator trim and press hood catch
lever ; to the left.
X Raise the hood. X
Pull support strut ? out of bracket A.
X Lift up support strut ? and insert it into
yellow retaining clip =.
Closing the hood X
Raise the hood slightly and, at the same
time, remove support strut ? from yellow
retaining clip =.
X Swing support strut ? down and press it
into bracket A until it engages.
X Lower the hood and let it fall from a height
of approximately 8 in (20 cm).
X Check that

the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Do not press the hood
closed. Open the hood again and close it
with a little more force. Engine oil
General notes Depending on the driving style, the vehicle
consumes up to 0.9 US qt (0.8 liters) of oil
over a

distance of 600 miles (1,000 km). The
oil consumption may be higher than this when
the vehicle is new or if you frequently drive at
high engine speeds.
Depending on the engine, the oil dipstick may
be in a different location.
When checking the oil level:
R park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
R if the engine is not at normal operating
temperature, e.g. if the engine was only
started briefly: wait about 30 minutes
before carrying out the measurement. Engine compartment
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Checking the oil level using the oil
dipstick
Example
X
Pull oil dipstick : out of the dipstick guide
tube.
X Wipe off oil dipstick :.
X Slowly slide oil dipstick : into the guide
tube to the stop, and take it out again.
If the level is between MIN mark = and
MAX mark ;, the oil level is correct.
X If the oil level has dropped to MIN mark
= or below, add 1.1 US qt
(1.0 liter) of
engine oil.
Adding engine oil G
WARNING
If engine oil comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next
to the filler neck. Let the engine cool down
and thoroughly clean the engine oil off the
components before starting the engine. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Only use engine oils and oil filters that
have been approved for vehicles with a
service system. You

can obtain a list of the
engine oils and oil filters tested and
approved in accordance with the Mercedes-Benz Specifications for Service
Products at any Mercedes-Benz Service
center.
Damage to
the

engine or exhaust system is
caused by the following:
R using engine oils and oil filters that have
not been specifically approved for the
service system
R replacing engine oil and oil filters after
the interval for replacement specified by
the service system has been exceeded
R using engine oil additives.
! Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off. Example: engine oil cap
X
Turn cap : counter-clockwise and remove
it.
X Add engine oil.
If the oil level is at or below the MIN mark
on the oil

dipstick, add 1.1 US qt (1.0 liter)
of engine oil.
X Replace cap : on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
X Check the oil level again with the oil
dipstick (Y page 268).
Further information on engine oil
(Y page 332). 268
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