2014 MERCEDES-BENZ B-CLASS SPORTS Owners Manual

Problem Possible causes/consequences and
000B Solutions
The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 299).
or
X Jump-start the vehicle (Y page 303).
or
X Consult aqualified specialist workshop. The engine cannot be
started using the
SmartKey. The steering lock is mechanically blocked.
X
Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions. Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is arisk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
You should preferably place luggageorl oads
in the cargo compartment. Observe the
loading guidelines (Y page 250). Unlocking and opening doors from
the inside Doors
79Opening and closing Z

X
To unloc kafrontdoor: pull door
handle 0010.
Locking knob 001Apops up.
The door is unlocke dand can be opened.
X To ope nafrontdoor: pull door
handle 0010.
X To unloc karear door: pull up locking
knob 001A.
The door is unlocke dand can be opened.
X To ope narear door: pull door handle 0010.
Yo uc an open adoorfrom insid ethe vehicle
eve nifith as been locked. You can open the
rear door sfromi nside th evehicle unless they
are secured by th echild-proof lock
(Y page 62).
If th evehicle has previously been locke dwith
th eS ma rtKey, opening adoor from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Y page 70).Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. This can be useful if you wish
to lock the vehicle before pulling away,f or
example. X
To unlock: press button 001A.
X To lock: press button 0010.
The vehicle locks when all the doors and
the tailgate are closed.
Meanwhile, the fuel filler flap will not be
locked or unlocked. You cannot unlock the vehicle centrally from
the inside if the vehicle has been locked with
the SmartKey.
You can open
adoor from inside the vehicle
even if it has been locked. You can open the
rear doors from inside the vehicle unless they
are secured by the child-proof lock
(Y page 62).
If the vehicle has previously been locked with
the SmartKey, opening adoor from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Y page 70).
If the vehicle has been locked using the
lockin gbutton for the central locking, or has
been locked automatically, and adoor is
opened from the inside:
R the vehicle will be fully unlocked if it had
previously been fully unlocked
R only the door which has been opened form
the inside is unlocked if only the driver's
door had been previously unlocked Automatic locking feature
X
To deactivate: press and hold button 001A
for about five seconds until atones ounds.
X To activate: press and hold button 0010for
about five seconds until atones ounds.
i If you press one of the two button sand
do not hear atone, the relevant setting has
already been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning. 80
DoorsOpening and closing

You could therefore lock yourself out if:
R the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is on aroller dynamometer.
You can also switc hthe automatic locking
function on and off using the on-board
computer (Y page 205). Unlocking th
edriver' sdoor
(mechanical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unloc kand
open the driver's door, the anti-thef talarm
system will be triggere d(Ypage 70).
X Take the mechanical key out of the
SmartKey (Y page 75).
X Insert the mechanical key int othe lock of
the driver's door as far as it will go. X
Turn the mechanical key counter-clockwise
to position 000C.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key int othe
SmartKey. Locking th
evehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey, use the mechanical key. X
Open the driver's door.
X Close the front-passenger door, the rear
doors and the tailgate.
X Press the locking button (Y page 80).
X Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs manually, if necessary ( Ypage 79).
X Close the driver's door.
X Take the mechanical key out of the
SmartKey (Y page 75).
X Insert the mechanical key int othe lock of
the driver's door as far as it will go. X
Turn the mechanical key clockwise as far
as it will go to position 000C.
X Turn the mechanical key back and remove
it.
X Make sure that the doors and the tailgate
are locked.
X Insert the mechanical key int othe
SmartKey.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed. Cargo compartment
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide .Ifthe tailgate
is open when the engine is running, Cargo compartment
81Opening and closing
Z

particularly if the vehicle is moving, exhaust
fumes could enter the passenger
compartment .There is arisk of poisoning.
Turn off the engine before opening the
tailgate. Never drive with the tailgate open. G
WARNING
If persons, particularly children are subjected
to prolonged exposure to extremeh eat or
cold, there is arisk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i The opening dimensions of the tailgate
can be found in the "Vehicle data" section
(Y page 353).
You should preferably place luggage or loads
in the cargo compartment. Observe the
loading guidelines (Y page 250).
Do not leave the SmartKey in the cargo
compartment. You could otherwise lock
yourself out.
The tailgate can be:
R opened and closed manually from outside
R unlocked from inside with the mechanical
key Opening/closing from outside
Opening X
Press the 0009button on the SmartKey. X
Pull handle 001A.
X Raise the tailgate.
Closing X
Pull the tailgate down using handle 001A.
X Allow the tailgate to drop into the lock.
X If necessary, lock the vehicle with the
0010 button on the SmartKey. Tailgate emergency release
If the tailgate can no longer be opened from
outside the vehicle, use the emergency
release on the inside of the tailgate.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i The opening dimensions of the tailgate
can be found in the "Vehicle data" section
(Y page 353). 82
Cargo compartmentOpening and closing

You can reach the emergenc
yrelease via the
carg ocompartment. Fold the rear backrests
forward (Y page 254).
X Take the mechanical key out of the
SmartKey (Y page 75). X
Insert mechanical key 0010intot he opening
in paneling 001A.
X Turn mechanical key 001090° clockwise.
X Push mechanical key 0010in the direction of
the arrow and open the tailgate.
i When you lock the vehicle ( Ypage 81),
the carg ocompartmen tisalso locked. Side windows
Important safety notes
G
WARNING
While opening the side windows ,body parts
in the closing area could become trapped.
There is arisk of injury.
Make sure that no body part sare in close
proximit ydurin gthe closing procedure. If
somebody becomes trapped, release the
switc horp ress the switc htoopen the side
window again. G
WARNING
If children operat ethe side windows they
could become trapped, particularly if the yare
left unsupervised. There is arisk of injury.
Activate the override feature for the rear side
windows .When leaving the vehicle, always take the SmartKey with you and lock the
vehicle. Never leave children unsupervised in
the vehicle.
Side window reversing feature
The side windows are equipped with an
automatic reversing feature. If asolid object
blocks or restrictsas ide window during the
closing process, the side window opens again
automatically .However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing aside window. G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small
fingers
R over the last 1/6 in(4 mm) of the closing
movement
R during resetting
R when closing the side window again
manually immediately after automatic
reversing
This means that the reversing feature cannot
prevent someone being trapped in these
situations. There is arisk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again. Opening and closin
gthe side
windows
The switches for all side windows are located
on the driver's door. There is also aswitch on
each door for the corresponding side window.
The switches on the driver's door take
precedence. Side windows
83Opening and closing Z

001A
Front left
0010 Front right
0023 Rear right
0021 Rear left
i Whe nthe override feature for the side
windows is activated (Y page 62), the side
windows cannot be operated from the rear.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X To open: press the corresponding switch.
X To open fully: press the corresponding
switch beyond the point of resistance.
Automatic closing is started.
X To close: pull the corresponding switch.
X To close fully: pull the corresponding
switch beyond the pressure point.
Automatic closing is started.
X To interrupt the automatic opening/
closing: press/pull the corresponding
switch again.
i If you press the switch beyond the point
of resistance, an automatic opening/
closing process is started in the
corresponding direction. You can stop
automatic operation by operating the
switch again.
i You can continue to operate the side
windows after you switch off the engine or
remove the SmartKey. This function is
available for up to five minutes or until the
driver's or front-passenger door is opened. Convenienceo
pening
You can ventilate the vehicle before you start
driving. To do this, the SmartKey is used to
carry out the following functions
simultaneously:
R unlock the vehicle
R open the side windows
R open the panorama roof with power tilt/
sliding panel and the roller sunblinds
i The convenience opening feature can
only be operated using the SmartKey. The
SmartKey must be close to the driver's
door handle.
X Point the tip of the SmartKey at the driver's
door handle.
X Press and hold the 0009button until the
side windows and the panorama roof with
power tilt/sliding panel are in the desired
position.
If the roller sunblinds of the panorama roof
with power tilt/sliding panel are closed, the
roller sunblinds are opened first.
X Press and hold the 0009button again until
the panorama roof with power tilt/sliding
panel is in the desired position.
X To interrupt convenienceo pening:
release the 0009button. Conveniencec
losing feature G
WARNING
When the convenience closing feature is
operating, parts of the body could become
trapped in the closing area of the side window
and the sliding sunroof. There is arisk of
injury.
Observe the complete closing procedure
when the convenience closing feature is
operating. Make sure that no body parts are
in close proximity during the closing
procedure. 84
Side windowsOpening and closing

When you lock the vehicle, you can
simultaneously:
R
close the side windows
R close the panorama roof with power tilt/
sliding panel
On vehicles with apanorama roof with power
tilt/sliding panel, you can then close the
roller sunblinds.
i The SmartKey must be close to the
driver's door handle.
X Point the tip of the SmartKey at the driver's
door handle.
X Press and hold the 0010button until the
side windows and the panorama roof with
power tilt/sliding panel are fully closed.
X Make sure that all the side windows and the
panorama roof with power tilt/sliding
panel are closed.
On vehicles with apanorama roof with power
tilt/sliding panel:
X Press and hold the 0010button again until
the roller sunblinds of the panorama roof
with power tilt/sliding panel close.
X To interrupt convenienc eclosing:
release the 0010button. Resetting the side windows
You must reset each side window if:
R the side window opens again slightly after
being closed fully.
R the side window can no longer be fully
opened or closed.
X Close all the doors.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X Pull the correspondin gswitch on the door
control panel until the side window is
completely closed (Y page 83).
X Hold the switch for an additional second. If the side window opens again slightly:
X
Immediately pull the correspondin gswitch
on the door control panel until the side
window is completely closed (Y page 83).
X Hold the switch for an additional second.
X If the correspondin gside window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again. Problems with the side windows
G
WARNING
If you close aside window again immediately
after it has been blocked or reset, the side
window closes with increased or maximum
force. The reversin gfeature is then not active.
Parts of the body could be trapped in the
closing area in the process. This poses an
increased risk of injury or even fatal injury.
Make sure that no parts of the body are in the
closing area. To stop the closing process,
release the switch or push the switch again to
reopen the side window.
Problem: aside window cannot be closed
because it is blocked by objects, e.g.
leaves in th ewindow guide.
X Remove the objects.
X Close the side window.
Problem :aside window cannot be closed
and you cannot see th ecause. Ifas ide
window is obstructed during closin gand
reopen sagain slightly:
X Immediately afte rthe window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed with increased
force. Side windows
85Opening and closing Z

If
as ide window is obstructed again during
closing and reopens again slightly:
X Immediately after the window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed withou tthe anti-
entrapment feature. Panoramar
oof with power tilt/sliding
panel Important safety notes
In th efollowing section, th eterm" sliding
sunroof" refers to th epanorama roo fwith
power tilt/slidin gpanel. G
WARNING
While opening and closing the slidin gsunroof,
body part sinclosep roximit ycould become
trapped. There is arisk of injury.
Make sure that no body part sare in close
proximit ydurin gthe opening and closing
procedures.
If somebody becomes trapped:
R release the switc himmediately, or
R durin gautomatic operation, push the
switc hbriefly in any direction
The opening or closing procedure will be
stopped. G
WARNING
If children operat ethe slidin gsunroof they
could become trapped, particularly if the yare
left unsupervised. There is arisk of injury.
When leavin gthe vehicle, always tak ethe
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Only open the slidin gsunroof if it is free
of sno wand ice. Otherwise, malfunctions
may occur.
Do not allow anything to protrude fro mthe
sliding sunroof. Otherwise, the seals could
be damaged. !
The weather can change abruptly. It could
start to rain or snow. Make sure that the
sliding sunroof is closed when you leave the
vehicle. The vehicle electronicsc an be
damaged if water enters the vehicle
interior.
i Resonance noises can occur in addition
to the usuala irflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open aside window slightly to reduce or
eliminate these noises. Sliding sunroof reversing feature
The sliding sunroof is equipped with an
automatic reversing feature. If asolid object
blocks or restrictst he sliding sunroof during
the closing process, the sliding sunroof opens
again automatically .However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing the sliding sunroof. G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small
fingers
R over the last 1/6 in(4 mm) of the closing
movement
R during resetting
R when closing the sliding sunroof again
manually immediately after automatic
reversing
This means that the reversing feature cannot
prevent someone being trapped in these
situations. There is arisk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
R release the switch immediately, or
R during automatic operation, push the
switch briefly in any direction
The closing process is stopped. 86
Panoram
aroof with power tilt/sliding panelOpening and closing