2022 MERCEDES-BENZ B-CLASS HATCHBACK Owners Manual

Vehicles with KEYLESS-GO

Press locking button 2 on t he tailgate.
If a key is detected outside the vehicle, the
tailgate will close and the vehicle will be
locked. 
Press and hold the p butt
on on the key.
The key must be in the vicinity of the vehicle.
Vehicles with HANDS-FREE ACCESS 
Make a kicking movement with your foot
belo
w the bumper ( page 94).
Automatic reversing function for the tailgate
The t
ailgate is equipped with automatic blockage
detection with a reversing function. If an obstacle
obstructs the tailgate during the automatic closing
process, it will automatically open again slightly.
Automatic blockage detection with the reversing
function is only an aid and is not a substitute for
your attentiveness. 
During the closing process, make sure that no
body par
ts are in the closing area. &
WARNING Risk of becoming tr
apped
despite reversing function
The reversing function will not react:
= t

o sos, light and thin objects, e.g. Nngers
= towards the end of the closing procedure
In these situations in particular, the reversing
function cannot prevent someone being trap-
ped. 
Ensure that no body parts are in the
closing ar
ea.
If someone is trapped, either: = Pr

ess the p button on the key.
= Press or pull the remote operating switch
on the driver's door.
= Press the closing or locking button on the
tailgate.
= Pull the tailgate handle. HANDS-FREE ACCESS function
With HANDS-FREE ACCESS you can open, close
or s

top the closing process of the tailgate by per-
forming a kicking movement under the rear
bumper.
The kicking movement triggers the opening or
closing process alternately. 94
Opening and closing

Observe the notes when opening (
 pag e 91)
and closing ( page 92) the tailgate.
% Two warning tones sound when the tailgate is
opening or closing. &
WARNING Risk of bur
ns caused by a hot
exhaust system
The vehicle exhaust system can become very
ho
t. If you use HANDS-FREE ACCESS, you
could burn yourself by touching the exhaust
system. 
Always ensure that you only make a kick-
ing mo

vement within the detection range
of the sensors. *
NOTE V
ehicle damage due to uninten-
tional opening of the tailgate =
when using an aut
omatic car wash
= when using a high pressure cleaner 
Deactivate the function of the key in
t

hese situations.
or 
Make sure that the key is at a minimum
dis

tance of 3 m away from the vehicle. When making the kicking movement, make sure
t

hat you are standing Nrmly on the ground. You
could otherwise lose your balance, e.g. on ice.
Observe the following notes: = The key is behind the vehicle.
= Stand at least 30 cm away from the vehicle
while performing the kicking movement.
= Do not come into contact with the bumper
while making the kicking movement.
= Do not carry out the kicking movement too
slowly.
= The kicking movement must be towards the
vehicle and back again. 1
Detection range of the sensors
If several consecutive kicking movements are not
successful, w
ait ten seconds.
System limits
The system may be impaired or may not function
in the following cases:
= The sensors are dirty, e.g. due to road salt or
snow.
= The kicking movement is made using a pros-
thetic leg. Opening and closing
95

The tailgate can open or close unintentionally in
t he following situations:
= A person's arms or legs are moving in the sen-
sor detection range, e.g. when polishing the
vehicle or picking up objects.
= Objects are moved or placed behind the vehi-
cle, e.g. the hose of a fuel dispenser, a charg-
ing cable or luggage
= Clamping straps, tarpaulins or other coverings
are pulled over the bumper.
= A protective mat with a length reaching over
the boot sill down into the detection range of
the sensors is used.
= The protective mat is not secured correctly.
= Work is being done on the trailer hitch, trailers
or rear bicycle racks.
Deactivate the function of the key (  page 84) or
do not carry the key about your person in such
situations. Limiting the opening angle of the tailgate
Activating the opening angle limiter
Y

ou can limit the opening angle of the tailgate in
the top half of its opening range up to a point
shortly before the end position. 
Stop the opening procedure of the tailgate at
t

he desired position. 
Press and hold the closing button on the tail-
g

ate until you hear a short acoustic signal.
The opening angle limiter will be activated. The
tailgate will then stop in the stored position
when opened.
To open the tailgate fully, pull the handle on the
outside of t
he tailgate again aser it has stopped
automatically.
Deactivating the opening angle limiter 
Press and hold the closing button on the tail-
g

ate until two short acoustic signals sound. Unlocking the tailgate with the emergency key
Requirements:
= The r

ear seat backrest has been folded
forward.
= The load compartment cover has been
removed. 
Remove the emergency key (  pag
e 85).96
Opening and closing


Insert emergency key 2 int o opening 1 in
the trim and push it in.
The tailgate will be unlocked. Side windows
Opening and closing the side windows
&
WARNING Risk of becoming tr
apped when
opening a side window
When you open a side window, parts of the
body could be dr
awn in or become trapped
between the side window and window frame. 
When opening, make sure that nobody is
t
ouching the side window. 
If someone is trapped, release the but-
t
on immediately or pull it in order to
close the side window again. &
WARNING Risk of becoming tr
apped when
closing a side window
When closing a side window, body parts could
be tr
apped in the closing area in the process. 
When closing, make sure that no body
par

ts are in the closing area. 
If someone is trapped, release the but-
t
on immediately or press the button in
order to reopen the side window. &
WARNING Risk of becoming tr
apped when
children operate the side windows
Children could become trapped if they operate
t
he side windows, particularly when unatten-
ded. 
Activate the child safety lock for the rear
side windo
ws. 
When leaving the vehicle, always take the
k
ey with you and lock the vehicle. 
Never leave children unattended in the
v
ehicle. Requirements:
= The po

wer supply or the vehicle has been
switched on. 1
Closing
2 Open
The buttons on the driver's door take precedence. 
To start automatic operation: pr ess the b
button beyond the point of resistance or pull
and release it. 
To interrupt automatic operation: pr
ess or pull
the b button again. Opening and closing
97

When the vehicle is switched
oM, y ou can con-
tinue to operate the side windows.
This function is available for around four minutes
or until a front door is opened.
Automatic reversing function of the side windows
If an obstacle impedes a side window during the
closing process, the side window will open again
automatically. The automatic reversing function is
only an aid and is not a substitute for your atten-
tiveness. 
During the closing process, make sure that no
body par
ts are in the closing area. &
WARNING Risk of becoming tr
apped
despite there being reversing protection
on the side window
The reversing function does not react: = t

o sos, light and thin objects, e.g. Nngers.
= during resetting.
The reversing function cannot prevent some-
one from becoming trapped in these situa-
tions. 
During the closing process, make sure
t
hat no body parts are in the closing
area. 
If someone becomes trapped, press the
b butt

on to open the side window
again. Automatic function of the side windows
In the following cases, the side windows will be
closed aut

omatically when the vehicle is switched
oM:
= if it starts to rain
Rain is detected by a rain sensor on the wind-
screen.
= in extreme temperatures
= aser a certain time (depending on the on-
board electrical system voltage)
= if there is a malfunction in the power supply
The side windows will be closed as far as the ven-
tilation position. Vehicles with a panorama sliding sunroof:
t
he side
windows will be closed completely if the sliding
sunroof is open.
If the side windows are obstructed during auto-
matic closing, the side window concerned will
open again slightly. Aser another automatic clos-
ing process, the automatic function may be deac-
tivated. Aser about ten seconds, the automatic
function is active again. Convenience opening (ventilating the vehicle
bef

ore starting a journey) &
WARNING Risk of entr
apment when open-
ing a side window
When opening a side window, parts of the
body could be dr
awn in or become trapped
between the side window and window frame. 
When opening, make sure that nobody is
t
ouching the side window. 
Release the button immediately if some-
body becomes tr

apped.98
Opening and closing

Requirements:
= The k
ey is in the immediate vicinity of the vehi-
cle. 
Press and hold the Ü butt
on on the key.
The following functions are performed:
= The vehicle is unlocked.
= The side windows are opened.
= The panoramic sliding roof is opened.
= The seat ventilation of the driver's seat is
switched on.
% If the roller sunblind of the panoramic sliding
sunr

oof is closed, the roller sunblind is
opened Nrst. 
To interrupt convenience opening: r
elease
Ü the button. 
To continue convenience opening: pr
ess and
hold the Ü button again. Convenience closing (closing the vehicle from out-
side)
&
WARNING Risk of entr
apment due to not
paying attention during convenience clos-
ing
When the convenience closing feature is oper-
ating, par
ts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. 
When the convenience closing feature is
oper
ating, monitor the entire closing
process and make sure that no body
parts are in the closing area. Requirements:
= The k

ey is in the immediate vicinity of the vehi-
cle. 
Press and hold the ß butt
on on the key.
The following functions are performed:
= The vehicle is locked.
= The side windows are closed.
= The panoramic sliding roof is closed. 
To interrupt convenience closing: r
elease the
ß button. 
To continue convenience closing: pr
ess and
hold the ß button again.
% Convenience closing also functions with KEY-
LESS-GO
( page 88). Resolving problems with the side windows
&
WARNING Risk of becoming tr
apped or
fatally injured if reversing protection is not
activated
If you close a side window again immediately
aser it has been bloc

ked, the side window will
close with increased or maximum force. The
reversing function is then not active and body
parts may become trapped. 
Make sure that no parts of the body are
in t

he closing area. 
To stop the closing process, release the
butt

on or press the button again to
reopen the side window. Opening and closing
99

A side window cannot be closed and you cannot
see t he cause. 
Check to see whether any objects are in the
windo

w guide. 
Adjust the side windows.
Adjusting the side windows
If a side windo
w is obstructed during closing and
reopens again immediately: 
Immediately aser t
his, pull and hold the corre-
sponding button again until the side window
has closed and hold the button for at least one
more second (re-adjustment).
The side window will be closed without the
automatic reversing function.
If the side window is obstructed again and
r
eopens again immediately: 
Immediately aser t
his, pull and hold the corre-
sponding button again until the side window
has closed and hold the button for at least one
more second (follow-up adjustment).
The side window will be closed without the
automatic reversing function. The side windows cannot be opened or closed
using t

he convenience opening feature.
Possible causes: = The key battery is weak or discharged. 
Check the battery using the indicator lamp
( pag

e 83). 
Replace the key battery, if necessary
( pag
e 85). Sliding sunroof
Opening and closing the sliding sunroof
%
The term "sliding sunroof" also refers to the
panor

ama sliding sunroof. &
WARNING Risk of becoming tr
apped when
the sliding sunroof is being opened and
closed
Body parts may become trapped in the range
of mo
vement. 
During opening and closing, make sure
t
hat no body parts are in the range of
movement. 
Release the button immediately if some-
body becomes tr

apped.
or 
BrieOy pr
ess the button in any direction
during automatic operation.
The opening or closing process will be
stopped. &
WARNING Risk of entr
apment if the slid-
ing sunroof is operated by children
Children operating the sliding sunroof could
g
et caught in the moving parts, particularly if
unattended. 
Never leave children unattended in the
v
ehicle. 
When leaving the vehicle, always take the
k
ey with you and lock the vehicle. 100
Opening and closing

&
WARNING Risk of becoming tr apped when
the roller sunblind is being opened and
closed
Body parts may become trapped between the
r
oller sunblind and frame or sliding roof. 
When opening or closing, make sure that
no body par

ts are in the roller sunblind's
range of movement. 
Release the button immediately if some-
body becomes tr

apped.
or 
BrieOy pr
ess the button in any direction
during automatic operation.
The opening or closing process will be
stopped. *
NOTE Malfunction due t
o snow and iceSnow and ice may cause the sliding sunroof to
malfunction. 
Open the sliding sunroof only if it is free
of sno
w and ice. *
NOTE Damag
e caused by protruding
objects Objects that protrude from the sliding sunroof
ma

y damage the seals. 
Do not allow anything to protrude from
t
he sliding sunroof. *
NOTE Damag
e to the sliding sunroof when
a roof luggage rack is Ntted When a roof luggage rack is
Ntt
ed, raising or
opening the sliding sunroof may be restricted. 
Check whether the sliding sunroof can
be r

aised or opened when a roof luggage
rack is Ntted. 
If in doubt, do not raise or open the slid-
ing sunr

oof. B-Class Sports Tourer B 250 e: *
NOTE Damag
e to the sliding sunroof when
a roof luggage rack is Ntted When a roof luggage rack is
Ntt
ed, raising or
opening the sliding sunroof may cause dam-
age. 
Do not raise or open the sliding sunroof. Opening and closing
101