2012 MERCEDES-BENZ B-CLASS Owners Manual

X
To raise: using handle :, lift up cargo
compartment floor ; in the direction of
arrow = and pull it upwards.
X Lower cargo compartment floor ; again.
To do
this,
push the trunk floor away so that
it engages in the guide on the upper level.
Cargo compartment floor ; engages in
the upper position.
i Carry out this step using both hands.
X To lower: raise cargo compartment
floor ; slightly
using

handle : and pull it
towards you.
X Lower cargo compartment floor ; again
slowly. Whilst doing so, press the trunk
floor into the lower level.
Cargo compartment floor ; engages in
the lower position. Roof carrier
Important safety notes G
WARNING
When you load the roof, the center of gravity
of the vehicle rises and the driving
characteristics change. If you exceed the
maximum roof load, the driving
characteristics, as well as steering and
braking, will be greatly impaired. There is a
risk of an accident.
Never exceed the maximum roof load and
adjust your driving style.
! Mercedes-Benz recommends that you
only use roof

carriers that have been tested
and approved for Mercedes-Benz vehicles.
This helps to prevent damage to the
vehicle.
Position the load on the roof rack in such a
way that the vehicle will not sustain
damage even when it is in motion.
Ensure that, depending on the vehicle's
equipment, you can raise the panorama
roof with power tilt/sliding panel fully and open the tailgate fully when the roof carrier
is installed.
The maximum roof load is 165 lbs((75 kg).
An incorrectly secured roof carrier or roof
load may

become detached from the vehicle.
You must therefore ensure that you observe
the roof carrier manufacturer's installation
instructions.
Attaching the roof carrier X
Open covers : carefully in
the direction of
the arrow.
X Fold covers : upwards.
X Only secure the roof carrier to the
anchorage points under covers :.
X Observe the manufacturer's installation
instructions. Features
Cup holder
Important safety notes G
WARNING
The cup holder cannot hold a container secure
whilst traveling. If

you use a cup holder whilst
traveling, the container may be flung around
and liquid may be spilled. The vehicle
occupants may come into contact with the
liquid and if it is hot, they may be scalded. You
may be distracted from the traffic conditions
and you could lose control of the vehicle.
There is a risk of an accident and injury. Features
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Only use the cup holder when the vehicle is
stationary. Only use the cup holder for
containers of the right size. Always close the
container, particularly if the liquid is hot.
G
WARNING
If objects in the passenger compartment are
stowed incorrectly, they can slide or be
thrown around and hit vehicle occupants.
There is a risk of injury, particularly in the
event of sudden braking or a sudden change
in direction.
R Always stow objects
so that they cannot be
thrown around in such situations.
R Always make sure that objects do not
protrude from stowage spaces, parcel nets
or stowage nets.
R Close the lockable stowage spaces while
driving.
R Stow and secure objects that are heavy,
hard, pointy, sharp-edged, fragile or too
large in the cargo compartment.
! Only use the cup holders for containers of
the right size and which have lids. The
drinks could otherwise spill.
The stowage compartments in the doors
provide space for bottles:
R front: capacity up to 51 fl. oz. (1.5 l)
R rear: capacity up to 17 fl. oz. (0.5 l)
Cup holder in the front-compartment
center console The cup holder and the rubber mat
underneath can be removed for cleaning.
Clean them
with

clean, lukewarm water only. X
To remove: carefully pull in upper sections
of cup holder : on the driver's and front-
passenger sides until they release.
X Lift the cup holder upwards ;

until it can
be removed. X
To install: insert the cup holder into lateral
curved sections ;

in the stowage
compartment. Insert the cup holder so that
the wedge of the upper section of cup
holder : faces forwards.
X Press the cup holder downwards until it
engages on the right and left-hand sides.
Cup holder in the rear seat armrest !
Do not sit

on or support your body weight
on the rear seat armrest when it is folded
down, as you could otherwise damage it.
! Close the cup holder before folding the
rear seat armrest up. Otherwise, the cup
holder could be damaged. 248
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X
Fold down the rear seat armrest.
X To open: press the front of cup holder :
or ;.
Cup holder
:
or ; extends automatically.
X To close: slide cup holder : or ; back
until it engages. Sun visors
Overview G
WARNING
If the mirror cover of the vanity mirror is folded
up when the

vehicle is in motion, you could be
blinded by incident light. There is a risk of an
accident.
Always keep the mirror cover folded down
while driving. :
Mirror light
; Bracket
= Retaining clip, e.g. for a car park ticket
? Vanity mirror
A Mirror cover Vanity mirror in the sun visor Mirror light : only functions if the sun visor
is clipped into bracket ; and mirror cover
A has been folded up.
Glare from the side
X
Fold down the sun visor.
X Pull the sun visor out of retainer ;.
X Swing the sun visor to the side.
X Vehicles with mirror lights: slide the
sun
visor horizontally as desired. Ashtray
Front ashtray !
The stowage space under the ashtray is
not heat resistant. Before placing lit
cigarettes in the ashtray, make sure that
the ashtray is

properly engaged. Otherwise,
the stowage space could be damaged. Example: vehicles with a cover over the stowage
compartment
X
To open: push the lower section of
cover :.
The stowage compartment opens.
X To remove the insert: lift insert =
up ; and out.
X To re-install the insert: press insert =
into the holder until it engages. Features
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i
If you remove the ashtray insert, you can
use the resulting compartment for
stowage.
Rear-compartment ashtray X
To open: pull cover = out by its top edge.
X To remove: pull insert ; by recess : in
the direction of arrow ? until it audibly
releases.
X Lift insert ; up and out.
X To install the insert: place
insert ;
from
above into the holder and press down until
it engages. Cigarette lighter
G
WARNING
You can burn yourself if you touch the hot
heating element or

the socket of the cigarette
lighter.
In addition, flammable materials can ignite if:
R the hot cigarette lighter falls
R a child holds the hot cigarette lighter to
objects, for example
There is a risk of fire and injury.
Always hold the cigarette lighter by the knob.
Always make sure that the cigarette lighter is
out of reach of children. Never leave children
unsupervised in the vehicle.
Your attention must always be focused on the
traffic conditions. Only use the cigarette lighter when road and traffic conditions
permit.
Example: vehicles with a cover over the stowage
compartment
X
Turn the SmartKey to position 2 in the
ignition lock (Y page 135).
X To open: push the lower section of
cover :.
The stowage compartment opens.
X Press in cigarette lighter ;.
Cigarette lighter ; will pop out
automatically when the heating element is
red-hot. 12 V sockets
Points to observe before use X
Turn the SmartKey to position 1 in the
ignition lock (Y page 135).
The sockets can be used for accessories with
a maximum draw of 180 W (15 A).
Accessories include such items as lamps or
chargers for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
i An emergency cut-out ensures that the
on-board voltage does not drop too low. If
the on-board voltage is too low, the power
to the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine. 250
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Socket in the front-compartment center
console
Vehicles with a cover over the stowage
compartment
X
To open: push the lower section of
cover :.
The stowage compartment opens.
X Lift up the cover of socket ;.Vehicles without a cover over the stowage
compartment
X
Lift up the cover of socket :.Socket in the rear-compartment center
console X
Pull cover : out by its top edge.
X Lift up the cover of socket ;.
Socket in the cargo compartment X
Lift up the cover of socket :. mbrace
Important safety notes !
You must have a license agreement to
activate the mbrace service. Make sure
that your system
is activated and ready for
use. To register, press the ï MB Info call
button. If any of the steps mentioned are
not carried out, the system may not be
activated. Features
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If you have questions about the activation,
contact one of the following telephone
hotlines:
R
USA: Mercedes-Benz Customer
Assistance Center at
1-800-FOR-MERCedes
(1-800-367-6372) or 1-866-990-9007
R Canada: Customer Service at
1-888-923-8367
Shortly after
successfully registering with the
mbrace service (Canada: TELEAID), a user ID
and password will be sent to you by post. USA
only: you can use this password to log onto
the mbrace area under "Owners Online" at
http://www.mbusa.com .
The mbrace system is available if:
R it has been activated and is operational
R the corresponding mobile phone network
is available for transmitting data to the
Customer Center
R a service subscription is available
R the starter battery is sufficiently charged
i Determining the location of the vehicle on
a map is only possible if:
R GPS reception is available.
R the vehicle position can be forwarded to
the Customer Assistance Center.
The mbrace system To adjust the volume during an mbrace call,
proceed as follows:
X
Press the W or X button on the
multifunction steering wheel.
or
X Use the volume controller of the audio
system/COMAND.
The mbrace system provides various
services, e.g.:
R automatic and manual emergency call
R Roadside Assistance call
R MB Info call USA only: you can find information and a
description of all available features under
"Owners
Online" at
http://www.mbusa.com.
System self-test After you have switched on the ignition, the
system carries out a self-diagnosis.
A malfunction in the system has been
detected if one of the following occurs:
R
The indicator lamp

in the SOS button does
not come on during the system self-test.
R The indicator lamp in the F Roadside
Assistance button does not light up during
self-diagnosis of the system.
R The indicator lamp in the ï MB Info call
button does not light up during self-
diagnosis of the system.
R The indicator lamp in one or more of the
following buttons continues to light up red
after the system self-diagnosis:
-SOS button
- the F Roadside Assistance call
button
- the ï MB Info call button
R The mbrace Inoperative or mbrace
Service Not Activated message
appears in the multifunction display after
the system self-diagnosis.
If a malfunction is indicated as outlined
above, the system may not operate as
expected. In the event of an emergency, help
will have to be summoned by other means.
Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
R USA: Mercedes-Benz Customer Assistance
Center at
1-800-FOR-MERCedes (1-800-367-6372)
or 1-866-990-9007
R Canada: Customer Service at
1-888-923-8367 252
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Emergency call
Important safety notes
!
You must have a license agreement to
activate the mbrace service. Make sure
that your system
is activated and ready for
use. To register, press the ï MB Info call
button. If any of the steps mentioned are
not carried out, the system may not be
activated.
If you have questions about the activation,
contact one of the following telephone
hotlines:
R USA: Mercedes-Benz Customer
Assistance Center at
1-800-FOR-MERCedes
(1-800-367-6372) or 1-866-990-9007
R Canada: Customer Service at
1-888-923-8367
General notes
An emergency call is dialed automatically if
an air bag or Emergency Tensioning Device is
triggered.
i You cannot end an automatically
triggered emergency call yourself.
An emergency call can also be initiated
manually.
As soon as the emergency call has been
initiated, the indicator lamp in the SOS button
flashes. The Connecting Call message
appears in the multifunction display.
The audio output is muted.
Once the connection has been made, the
Call Connected message appears in the
multifunction display.
All important information on the emergency
is transmitted, for example:
R Current location of the vehicle (as
determined by the GPS system)
R Vehicle identification number
R Information on the severity of the accident
Shortly after the emergency call has been
initiated, a voice connection is automatically
established between the Mercedes-Benz Customer Assistance Center and the vehicle
occupants.
R
If the vehicle occupants respond, the
Mercedes-Benz Customer Assistance
Center attempts to get more information
on the emergency.
R If there is no response from the vehicle
occupants, an ambulance is immediately
sent to the vehicle.
The mbrace system has not been able to
initiate an emergency call if no voice
connection to the

Response Center has been
established. This can occur, for example, if
the relevant mobile phone network is not
available. The indicator lamp in the SOS
button flashes continuously.
The Call Failed message appears in the
multifunction display and must be confirmed.
In this case, seek assistance by other means.
Making an emergency call G
WARNING
It can be dangerous to remain in the vehicle,
even if you

have pressed the SOS button in an
emergency if:
R you see smoke inside or outside of the
vehicle, e.g. if there is a fire after an
accident
R the vehicle is on a dangerous section of
road
R the vehicle is not visible or cannot easily be
seen by other road users, particularly when
dark or in poor visibility conditions
There is a risk of an accident and injury.
Leave the vehicle immediately in this or
similar situations as soon as it is safe to do
so. Move to a safe location along with other
vehicle occupants. In such situations, secure
the vehicle in accordance with national
regulations, e. g. with a warning triangle. Features
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X
To initiate an emergency call
manually: press cover : briefly to open.
X Press SOS button ; briefly.
The indicator lamp in SOS button ;
flashes until the emergency call is
concluded.
X Wait for a voice connection to the
Mercedes-Benz Customer Assistance
Center.
X After the emergency call, close cover :.
i If the mobile phone network is not
available, mbrace is not able to make an
emergency call. If you leave the vehicle
immediately after
pressing
the SOS button,
you do not know if mbrace has successfully
made the emergency call. In this situation,
seek additional assistance by other means.
Roadside Assistance button X
Press Roadside Assistance button :.
This initiates a call to the Mercedes-Benz
Customer Assistance Center.

The indicator
lamp in Roadside Assistance button :flashes while the call is active. The
Connecting Call message appears on
the multifunction
display.

The audio output
is muted.
If a connection can be made, the Call
Connected message appears in the
multifunction display.
If a cellular phone network is available and
there is
sufficient

GPS reception, the mbrace
system transmits data to the Mercedes-Benz
Customer Assistance Center, for example:
R Current location of the vehicle
R Vehicle identification number
i The display of the audio system or
COMAND shows that an mbrace call is
active. During the call, you can change to
the navigation menu by pressing the NAVI
button on COMAND, for example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants.
From the vehicle remote malfunction
diagnosis, the Mercedes-Benz Customer
Assistance center can ascertain the nature of
the problem ( Y page 258).
The Mercedes-Benz Customer Assistance
Center either sends a qualified Mercedes-
Benz technician or arranges for your vehicle
to be transported to the nearest authorized
Mercedes-Benz Center. You may be charged
for services such as repair work and/or
towing. Further details are available in your
mbrace manual.
i The mbrace system failed to initiate a
Roadside Assistance call if:
R the indicator lamp for Roadside
Assistance call button : is flashing
continuously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This may be because the corresponding
mobile phone network is not available. 254
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