lock MERCEDES-BENZ B-CLASS 2012 Owners Manual

Problem Possible causes/consequences and
M SolutionsX
Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant (Y page 269). Observe
the warning notes.
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At
coolant temperatures under 248 ‡ (120 †),
drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. Driving systems
Problem Possible causes/consequences and
M Solutions·
The red distance
warning lamp lights up
while the vehicle is in
motion. A
warning

tone
also sounds. You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
X
Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action. Warning and indicator lamps in the instrument cluster
233
On-board computer and displays Z
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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).Loading guidelines
G
WARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be

flung around and thereby hit vehicle
occupants. There is a risk of injury,
particularly in the event of sudden braking or
a sudden change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey. G
WARNING
Combustion engines emit poisonous exhaust
gases such as

carbon monoxide. If the tailgate
is open when the engine is running,
particularly if the vehicle is moving, exhaust
fumes could enter the passenger
compartment. There is a risk of poisoning.
Turn off the engine before opening the
tailgate. Never drive with the tailgate open.
The handling characteristics of a laden
vehicle are dependent on the distribution of
the load within the vehicle. For this reason,
you should observe the following notes when
transporting a load:
R Never exceed the maximum permissible
gross vehicle weight or the gross axle weight rating of the vehicle (including
occupants). The
values

are specified on the
vehicle identification plate on the B-pillar of
the driver's door.
R The cargo compartment is the preferred
place to carry objects.
R Position heavy loads as far forwards as
possible and as low down in the cargo
compartment as possible.
R The load must not protrude above the
upper edge of the seat backrests.
R Always place the load against the rear or
front seat backrests. Make sure that the
seat backrests are securely locked into
place.
R Always place the load behind unoccupied
seats if possible.
R Use the cargo tie down rings and the parcel
nets to transport loads and luggage.
R Use cargo tie-down rings and fastening
materials appropriate for the weight and
size of the load.
R Hook in the cargo net when loading.
R The maximum load capacity of the stowage
well under the cargo compartment floor is
55 lbs (25 kg).
R Secure the load with sufficiently strong and
wear-resistant tie-downs. pad sharp edges
for protection.
! Do not position the load on one part of the
folding cargo compartment floor only. The
maximum load capacity of the folding cargo
compartment floor is 220 lbs (100 kg).
Distribute the weight evenly to avoid
damaging the cargo compartment floor.
Place a solid board under the load if
necessary. Please note that the load on the
cargo compartment floor will be increased
when the load is lashed down. 236
Loading guidelines
Stowage and features
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Stowage areas
Stowage space
Important safety notes 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.
Observe the loading guidelines (Y page 236).
Stowage compartments in the front Glove box
X
To open: pull handle :
and open glove box
flap ;.
X To close: fold glove box flap ; upwards
until it engages.
i There is a pen holder at the top of the
glove box flap. Eyeglasses compartment
X
To open: press marking :.
Make sure that the eyeglasses compartment
is always closed

while the vehicle is in motion.
Stowage compartment in the center
console X
To open: press the marking on cover :.
i Depending on the vehicle's equipment,
there is an open instead of a closed
stowage compartment or

an ashtray in the
center console. Stowage areas
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Stowage and features Z
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X
To open: fold down seat armrest :.
X Pull the cover, which can now be seen,
forwards by the grip until it lies on
armrest :.
X Pull the center head restraint on the rear
bench seat into the uppermost position
(Y page 89). X
Slide locking mechanism = in the
direction of the arrow.
X Swing flap ; fully to the side.
Flap ; is held open by a magnet.
X To close: swing flap ; in the cargo
compartment back until it engages.
X Fold the cover forwards until it engages into
armrest :.
X Fold armrest : up fully if necessary. Cargo compartment enlargement
Important safety notes G
WARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold
forwards, e.g. when
braking suddenly or in the
event of an accident.
R The vehicle occupant would thereby be
pushed into the seat belt by the rear bench
seat/rear seat or by the seat backrest. The
seat belt can no longer offer the intended
level of protection and could even cause
injuries.
R Objects or loads in the trunk/cargo
compartment cannot be restrained by the
seat backrest.
There is an increased risk of injury.
Before every trip, make sure that the seat
backrests and the rear bench seat/rear seat
are engaged.
! Before folding the backrest in the rear
compartment forwards, make sure that the
rear compartment armrest and the
cupholder are folded in. They may
otherwise be damaged.
Observe the loading guidelines (Y page 236).
Vehicles without the EASY-VARIO-PLUS
system Folding the rear seat backrest forward
The left-hand and right-hand rear seat
backrests can be folded forwards separately
to increase
the

cargo compartment capacity.240
Stowage areas
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X
Fully insert the backrest head restraints
(Y page 90).
X Move the driver's or front-passenger seat
forward if necessary.
X Pull left-hand or right-hand release
handle ; of the seat backrest forwards.
Corresponding seat backrest : is
released.
X Fold backrest : forwards.
X Move the driver's or front-passenger seat
back if necessary.
Folding the rear seat backrest back X
Move the driver's or front-passenger seat
forward if necessary.
! Make sure that the seat belt does not
become trapped when
folding the rear seat
backrest back. Otherwise, it could be
damaged.
X Fold seat backrest : back until
it engages.
Red lock status indicator ; is no longer
visible. X
Adjust the head restraints if necessary
(Y page 90).
X Move the driver's or front-passenger seat
back if necessary.
Vehicles with the EASY-VARIO-PLUS
system Folding the rear seat backrest forward
The left-hand and right-hand rear seat
backrests can be folded forwards separately
to increase
the

cargo compartment capacity. X
Fully insert the backrest head restraints
(Y page 90).
X Move the rear seat as far back as possible
(Y page 243).
X Move the driver's or front-passenger seat
forward if necessary.
X Pull right or left loop ; on the backrest in
the direction of the arrow.
Corresponding seat backrest : is
released.
X Fold down backrest : fully.
X Move the driver's or front-passenger seat
back if necessary. Stowage areas
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Stowage and features Z
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Always close the cargo compartment floor
before a journey.
! The maximum load capacity of the
stowage well under
the cargo compartment
floor is 55 lbs (25 kg).
Opening/closing the cargo
compartment floor A bracket for TIREFIT, the vehicle tool kit, etc.
is located underneath the cargo
compartment floor.
X
To open: open the tailgate.
X Press down handle : on ribbing ;.
Handle : folds up.
X Swing the cargo compartment floor
upwards using handle : until it rests
against the cargo compartment cover. X
Fold out hook = on the underside of the
cargo compartment floor. X
Attach hook = to the cargo
compartment's upper seal ?.
X To close: detach hook = from seal ?.
X Fasten hook = to the bracket on the
underside of the

cargo compartment floor.
X Fold the trunk floor down.
X Press the trunk floor down until it engages.
Setting the height of the trunk floor The stowage well under the cargo
compartment floor can be increased or
decreased in size as necessary. To do this,
you can
lock

the floor at two different heights.
The upper catch gives a flat load surface when
the rear bench seat is folded forward. 246
Stowage areas
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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
Features
Stowage and 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
Features
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i
Information on specific commands such
as "Address entry" or "Sending" can be
found on the website.
Calling up destination addresses
X Switch on the ignition.
The destination address is loaded into the
vehicle's navigation system.
A display message appears, asking
whether navigation should be started.
X Select Yes by sliding XVY and turning
cVd the COMAND controller and press
W to confirm.
The system calculates the route and
subsequently starts the route guidance
with the address entered.
i If you
select No
, the address can be stored
in the address book.
i If you have sent more than one
destination address, each individual
destination must be confirmed separately.
i Destination addresses are loaded in the
same order as the order in which they were
sent. If you have multiple Mercedes-Benz
vehicles with mbrace and active mbrace
accounts:
if multiple vehicles are registered under the
same e-mail address, the destination will
be sent to all the vehicles.
Vehicle remote opening You can use the vehicle remote opening if you
have unintentionally locked your vehicle and
a replacement
SmartKey

is not available. The
vehicle can be opened by the Mercedes-Benz
Customer Assistance Center.
The vehicle can be immediately opened
remotely within four days of the ignition being
turned off. After this time, the remote opening
may be delayed by 15 to 60 minutes. After
30 days the vehicle can no longer be opened
remotely.
X 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
You will be asked for your password.
X Return to your vehicle at the time agreed
upon with the Mercedes-Benz Customer
Assistance Center.
USA only: alternatively, the vehicle can be
opened via:
R the Internet, under the "Owners Online"
section
R the telephone application (e.g. iPhone ®
,
Blackberry)
To do this, you will need your identification
number and password.
i Vehicle remote
opening

is only possible if
the corresponding mobile phone network
is accessible.
Vehicle remote closing The remote closing feature can be used when
you
have
forgotten

to lock the vehicle and you
are no longer nearby. The vehicle can then be
locked by the Mercedes-Benz Customer
Assistance Center.
The vehicle can be immediately remotely
locked within four days of the ignition being
turned off. After this time, the remote closing
may be delayed by 15 to 60 minutes. After
30 days the vehicle can no longer be closed
remotely.
X 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
You will be asked for your PIN.
The next time you are inside the vehicle and
you switch on the ignition, the Doors Features
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Stowage and features Z
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Locked Remotely message appears in the
multifunction display.
USA only: alternatively, the vehicle can be
locked via:
R
the Internet, under the "Owners Online"
section
R the telephone application (e.g. iPhone ®
,
Blackberry)
To do this, you will need your identification
number and password.
i The vehicle remote closing feature is
available when the relevant mobile phone
network is
available
and data connection is
possible.
Stolen vehicle recovery service If your vehicle has been stolen:
X
Notify the police.
The police will issue a numbered incident
report.
X This number will be forwarded to the
Mercedes-Benz Customer Assistance
Center together with your PIN.
The Mercedes-Benz Customer Assistance
Center then attempts

to locate the mbrace
system. The Mercedes-Benz Customer
Assistance Center contacts you and the
local law enforcement agency if the vehicle
is located. However, only the law
enforcement agency is informed of the
location of the vehicle.
i If the anti-theft

alarm system is activated
for longer than 30 seconds, the Mercedes-
Benz Customer Assistance center is
automatically informed.
Vehicle remote malfunction diagnosis With the vehicle remote malfunction
diagnosis (Vehicle Health Check), the
Customer Assistance center can provide
improved support for problems with your
vehicle. During an existing call, vehicle data
is transferred to the Customer Assistance
center. The customer service representative can use the received data to decide what kind
of assistance is required. You are then, for
example, guided to the nearest Mercedes-
Benz Service center or a recovery vehicle is
called.
If
vehicle
data

needs to be transferred during
an MB Info call or a Roadside Assistance call,
this is initiated by the Customer Assistance
center. You will see the Roadside
Assistance Connected message in the
COMAND display. If the vehicle remote
malfunction diagnosis is able to be started,
the Request for vehicle diagnosis
received. Start vehicle diagnosis?
message appears in the display.
X Press Yes to confirm the message.
X If the Vehicle Diagnosis: Please
switch on ignition. message appears:
turn the key to position 2 in the ignition
lock.
X If the Please follow the
instructions received
by

phone and
move your vehicle to a safe
position. message appears: follow the
instructions of the customer service
representative.
The message in the display disappears.
If you select Cancel, the vehicle remote
malfunction diagnosis is canceled
completely.
The vehicle operating state check begins.
Meanwhile, the Vehicle diagnosis
activated message appears.
When the check is finished, the Sending
vehicle diagnosis data...(Voice
connection may be interrupted
during data transfer.) message
appears. The
vehicle

data can now be sent to
the Customer Assistance center.
X Press OK to confirm the message.
The voice connection with the Customer
Assistance center is terminated.
The Vehicle Diagnosis:
Transferring data... appears.258
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