2017 MERCEDES-BENZ B-Class window

Forward-facing child restraint system
If it is absolutely necessary to install a forward-
facing child restraint system on the front-
passenger seat, always move the front-
passenger seat as far back as possible. Fully
retract the seat cushion length. The entire base of the child restraint system must always rest on
the seat cushion of the front-passenger seat.
The backrest of the child restraint system must lie as flat as possible against the backrest of the
front-passenger seat. The child restraint system must not touch the roof or be subjected to a loadby the head restraint. Adjust the angle of the
seat backrest and the head restraint position
accordingly. Always make sure that the shoul-
der belt strap is correctly routed from the vehi-
cle belt outlet to the shoulder belt guide on the
child restraint system. The shoulder belt strap
must be routed forwards and downwards from
the vehicle belt outlet. If necessary, adjust the
vehicle belt outlet and the front-passenger seat
accordingly.
Always observe the child restraint system man- ufacturer's installation and operating instruc-
tions. Child-proof locks
Important safety notes G
WARNING
If children are traveling in the vehicle, they
could:
R open doors, thus endangering other people
or road users
R exit the vehicle and be caught by oncoming
traffic
R operate vehicle equipment and become
trapped
There is a risk of an accident and injury.
Always activate the child-proof locks and
override feature if children are traveling in the vehicle. When leaving the vehicle, always take
the key with you and lock the vehicle. Never
leave children unattended in the vehicle.
Override feature for:
R the rear doors (Y page 58)
R the rear side windows (Y page 58) G
WARNING
If you leave children unsupervised in the vehi- cle, they could set it in motion by, for example:
R release the parking brake.
R shift the transmission out of park position
P.
R start the vehicle's drive system.
They could also operate the vehicle's equip-
ment. There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle. G
WARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle. G
WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight. Pro- tect it with a blanket, for example. If the child
restraint system has been exposed to direct
sunlight, let it cool down before securing the
child in it. Never leave children unattended in the vehicle. Children in the vehicle
57Safety Z

Child-proof locks for the rear doors
You secure each door individually with the child-
proof locks on the rear doors. A door secured
with a child-proof lock cannot be opened from
inside the vehicle. When the vehicle is unlocked,
the door can be opened from the outside.
X To activate: press the child-proof lock lever
up in the direction of arrow 0043.
X Make sure that the child-proof locks are work-
ing properly.
X To deactivate: press the child-proof lock
lever down in the direction of arrow 0044.
Override feature for the rear side win-
dows X
To activate/deactivate: press button0043.
If indicator lamp 0044is lit, operation of the rear
side windows is disabled. Operation is only
possible using the switches in the driver's
door. If indicator lamp 0044is off, operation is
possible using the switches in the rear com-
partment. Pets in the vehicle
G
WARNING
If you leave animals unattended or unsecured in the vehicle, they could press buttons or
switches, for example.
As a result, they could:
R activate vehicle equipment and become
trapped, for example
R activate or deactivate systems, thereby
endangering other road users
Unsecured animals could also be flung around
the vehicle in the event of an accident or sud- den steering or braking, thereby injuring vehi-
cle occupants. There is a risk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box. Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
R ABS (Anti-lock BrakingSystem)
(Y page 59)
R BAS (Brake AssistSystem) (Y page 59)
R Active Brake Assist (Y page 60)
R ESP ®
(E lectronic StabilityProgram)
(Y page 62)
R EBD (Electronic Brake forceDistribution)
(Y page 63)
R ADAPTIVE BRAKE (Y page 64)
R STEER CONTROL (Y page 64) Important safety notes
If you fail to adapt your driving style or if you are inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override
the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the 58
Driving safety systemsSafety

X
Pull the tailgate down using handle 0043.
X Allow the tailgate to drop into the lock.
X If necessary, lock the vehicle with the 0037
button on the SmartKey or with KEYLESS-GO. Tailgate emergency release
General notes !
The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 286).
If the tailgate can no longer be unlocked:
R using the SmartKey, or
R using the remote operating switch in the door
control panel:
Use the emergency release on the inside of the tailgate.
You can reach the emergency release via the
cargo compartment.
Opening X
Remove cargo compartment cover
(Y page 213).
X Fold the rear seat backrest forwards
(Y page 211).
X Take the mechanical key out of the SmartKey
(Y page 68).
X Insert mechanical key 0044into opening 0043in
the trim and push it in.
X Open the tailgate.
X Insert the mechanical key into the SmartKey
(Y page 68). Side windows
Important safety notes
G
WARNING
While opening the side windows, body parts
could become trapped between the side win- dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or pull the switch to close the side window again. G
WARNING
While closing the side windows, body parts in the closing area could become trapped. There is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or press
the switch to open the side window again. G
WARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle. Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a side window from traveling
upwards during the automatic closing process,
the side window opens again automatically. Dur-
ing the manual closing process, the side window only opens again automatically after the corre-
sponding switch is released. The automatic
reversing feature is only an aid and is no substi-
tute for your attention when closing a side win-
dow. Side windows
75Opening and closing Z

G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R while resetting
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk 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 closing the side win-
dows
The switches for all side windows are located on the driver's door. There is also a switch on each
door for the corresponding side window.
The switches on the driver's door take prece-
dence. 0043
Front left
0044 Front right
0087 Rear right
0085 Rear left
X Turn the SmartKey to position 1or 2in the
ignition lock (Y page 109).
X To open manually: press and hold the cor-
responding switch.
X To open fully: press the switch beyond the
point of resistance and release it.
Automatic operation is started.
X To close manually: pull the corresponding
switch and hold it. X
To close fully: pull the switch beyond the
point of resistance and release it.
Automatic operation is started.
X To interrupt automatic operation: press/
pull the corresponding switch again.
i If you press/pull the switch beyond the
point of resistance, automatic operation is
started in the corresponding direction. You
can stop automatic operation by pressing/
pulling the switch again.
i You can continue to operate the side win-
dows after switching off the drive system or
removing the SmartKey. This function is avail- able for up to five minutes or until the driver's
or front-passenger door is opened.
i When the override feature for the side win-
dows is activated (Y page 58), the side win-
dows cannot be operated from the rear. Convenience opening
Vehicles with KEYLESS-GO or the Exclusive package: you can ventilate the vehicle before
you start driving.
The SmartKey can also be used to carry out the following functions simultaneously:
R unlock the vehicle
R open the side windows
The convenience opening feature can only be
operated using the SmartKey.
The "convenience opening" feature is also avail-
able when the vehicle is unlocked.
X Vehicles with the Exclusive package but
without KEYLESS-GO:
for the following
operations, point the tip of the SmartKey at
the door handle on the driver's door. The
SmartKey must be close to the driver's door
handle.
i Vehicles with KEYLESS-GO:
the SmartKey
must be in close proximity to the vehicle.
X Press and hold the 0036button until the side
windows reach the desired position.
X To interrupt convenience opening: release
the 0036 button. 76
Side windowsOpening and closing

Convenience closing feature
Important safety notes G
WARNING
When using the convenience closing feature,
parts of the body could be trapped in the clos- ing area when a side window is being closed. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
Vehicles with KEYLESS-GO or the Exclusive package: when you lock the vehicle, you can
close the side windows at the same time.
i Notes on the automatic reversing feature for
the side windows (Y page 75).
Using the SmartKey X
Vehicles with the Exclusive package but
without KEYLESS-GO: for the following
operations, point the tip of the SmartKey at
the door handle on the driver's door. The
SmartKey must be close to the driver's door
handle.
i Vehicles with KEYLESS-GO:
the SmartKey
must be in close proximity to the vehicle.
X Press and hold the 0037button until the side
windows are fully closed.
X To interrupt convenience closing: release
the 0037 button.
Using KEYLESS-GO The driver's door and the door at which the han-
dle is used, must both be closed. The SmartKey
must be outside the vehicle. The gap between
the SmartKey and the corresponding door han-
dle should not be greater than 3 ft (1 m). X
Touch recessed sensor surface 0043on the
door handle until the side windows are fully
closed.
i Make sure you only touch recessed sensor
surface 0043.
X Make sure that all the side windows are
closed.
X To interrupt convenience closing: release
recessed sensor surface 0043on the door han-
dle. Resetting the side windows
If a side window can no longer be closed fully,
you must reset it.
X Close all the doors.
X Turn the SmartKey to position 1or 2in the
ignition lock (Y page 109).
X Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed (Y page 76).
X Hold the switch for an additional second.
If the side window opens again slightly: X Immediately pull the corresponding switch on
the door control panel until the side window is completely closed (Y page 76).
X Hold the switch for an additional second.
X If the respective side window remains closed
after the button is released, then it has been
set correctly. If this is not the case, repeat the
steps above again. Side windows
77Opening and closing Z

Problems with the side windows
G
WARNING
If you close a side window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature 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, releasethe switch or push the switch again to reopen the side window. Problem
Possible causes/consequences and
0050 0050Solutions A side window cannot be
closed because it is
blocked by objects, e.g.
leaves in the window
guide. X
Remove the objects.
X Close the side window. A side window cannot be
closed and you cannot
see the cause. If a side window is obstructed 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 with increased force.
If a side 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 without the automatic reversing feature. 78
Side windowsOpening and closing

0043
Raises the backrest contour
0044 Softens the backrest contour
0087 Lowers the backrest contour
0085 Hardens the backrest contour Switching the seat heating on/off
Switching on/off G
WARNING
Repeatedly switching on the seat heating can
cause the seat cushion and backrest pads to
become very hot. The health of persons with
limited temperature sensitivity or a limited
ability to react to excessively high tempera-
tures may be affected or they may even suffer burn-like injuries. There is a risk of injury.
Therefore, do not switch the seat heating on
repeatedly. The three red indicator lamps in the button indi-
cate the heating level you have selected.
The system automatically switches down from
level 3to level 2after approximately eight
minutes.
The system automatically switches down from
level 2to level 1after approximately ten
minutes.
The system automatically switches off approx-
imately 20 minutes after it is set to level 1.
X Turn the SmartKey to position 1or 2in the
ignition lock (Y page 109).
X To switch on: press button0043repeatedly
until the desired heating level is set.
X To switch off: press button0043repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Problems with the seat heating Problem
Possible causes/consequences and
0050 0050Solutions The seat heating has
switched off prematurely
or cannot be switched
on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will switch
back on automatically. 82
SeatsSeats
, steering wheel and mirrors

Exterior mirrors
Adjusting the exterior mirrors G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the vehicle's drive system. G
WARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder. X
Turn the SmartKey to position 1or 2in the
ignition lock (Y page 109).
X Exterior mirror on the front-passenger side:
press button 0044.
Exterior mirror on the driver's side: press but- ton 0043.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected exterior mirror using button
0087as long as the indicator
lamp is lit.
X Press button 0087up, down, or to the right or
left until you have adjusted the exterior mirror
to the correct position. You should have a
good overview of traffic conditions.
The convex exterior mirrors provide a larger field
of vision.
After the engine has been started, the exterior
mirrors are automatically heated at low outside temperatures. Heating takes a maximum of ten
minutes.
i You can also heat up the exterior mirrors
manually by switching on the rear window
defroster.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position, proceed as follows:
X Move the exterior mirror into the correct posi-
tion manually. Automatic anti-glare mirrors
G
WARNING
Electrolyte may escape if the glass in an auto- matic anti-glare mirror breaks. The electrolyte
is harmful and causes irritation. It must not
come into contact with your skin, eyes, res-
piratory organs or clothing or be swallowed.
There is a risk of injury.
If you come into contact with the electrolyte,
observe the following:
R Rinse off the electrolyte from your skin
immediately with water.
R Immediately rinse the electrolyte out of
your eyes thoroughly with clean water.
R If the electrolyte is swallowed, immediately
rinse your mouth out thoroughly. Do not
induce vomiting.
R If electrolyte comes into contact with your
skin or hair or is swallowed, seek medical
attention immediately. 84
MirrorsSeats, steering wheel and mirrors