MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

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

1
Raise
2 Open
3 Close/lower
Use the W butt on to operate the panorama
sliding sunroof and the roller sunblind.
The panorama sliding sunroof can be operated
only when the roller sunblind is open. 
Check whether the sliding sunroof can be
r

aised or opened when a roof luggage rack is
Ntted. 
To start automatic operation: pr
ess or pull the
W button beyond the point of resistance
and release it. 
To interrupt automatic operation: br
ieOy press
the W button in any direction.
The opening/closing process will be stopped.
Automatic reversing function of the sliding sun-
r
oof
If an obstacle obstructs the sliding sunroof during
the closing process, the sliding sunroof will open
again automatically. The automatic reversing func-
tion 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 the reversing function being active
In particular, the reversing function does not
r
eact:
= to sos, light and thin objects, e.g. Nngers.
= towards the end of the closing procedure.
= during resetting. 
During the closing process, make sure
t
hat no body parts are in the closing
area. 
Release the button immediately if some-
body becomes tr

apped.
or 
BrieOy pr
ess the button in any direction
during automatic operation.
The closing process will be stopped. Automatic reversing function of the roller sunblind
If an obs
tacle obstructs the roller sunblind during
the closing process, the roller sunblind will open
again automatically. The automatic reversing func-
tion is only an aid and is not a substitute for your
attentiveness. 102
Opening and closing


When closing the roller sunblind, make sure
t
hat no body parts are in the range of move-
ment. &
WARNING Risk of becoming tr
apped
despite reversing function
In particular, the reversing function does not
r
eact to sos, light and thin objects, e.g. Nn-
gers. 
When closing the roller sunblind, make
sur

e that 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 the automatic closing process.
The closing process will be stopped. Automatic functions of the sliding sunroof
%
The term "sliding sunroof" also refers to the
panor

ama sliding sunroof. The sliding sunroof will be closed automatically
when t
he vehicle has been switched oM in the fol-
lowing situations:
= 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 sliding sunroof will rise at the rear in order to
continue ventilating the vehicle interior.
If the sliding sunroof is obstructed during an auto-
matic closing procedure, the roof will be opened
again slightly. The automatic function for the slid-
ing sunroof and the side windows will then be
deactivated.
Rain closing function when driving
Vehicles with a panorama sliding sunroof: if it
starts to rain, the raised sliding sunroof will auto-
matically be lowered while the vehicle is in
motion. Automatic lowering function
V
ehicles with a panorama sliding sunroof: if the
sliding sunroof is raised at the rear, it will auto-
matically be lowered slightly at higher speeds. At
low speeds, it will be raised again automatically. &
WARNING Risk of becoming tr
apped by
automatic lowering of the sliding sunroof
At higher speeds, the raised sliding sunroof
will aut
omatically be lowered slightly at the
rear. 
Make sure that nobody reaches into the
sliding sunr

oof's range of movement
while the vehicle is in motion. 
If somebody becomes trapped, br
ieOy
push the sliding sunroof button forwards
or backwards. %
By pushing or pulling the W butt
on, you
can interrupt the automatic functions "Rain
closing function when driving" and "Automatic
lowering". Opening and closing
103

Rectifying problems with the sliding sunroof
&
WARNING Risk of becoming tr apped or
fatal injuries when the sliding sunroof is
closed again
If the sliding sunroof is closed again immedi-
at
ely aser it has been blocked or reset, it will
close with increased force. 
Make sure that no parts of the body are
in t

he closing area. 
Release the button immediately if some-
body becomes tr

apped.
or 
BrieOy pr
ess the button in any direction
during the automatic closing process.
The closing process will be stopped. The sliding sunroof cannot be closed and you can-
no

t see the cause.
% The term "sliding sunroof" also refers to the
panor

ama sliding sunroof.
If the sliding sunroof is obstructed during closing
and r
eopens again slightly: 
Immediately aser aut
omatic reversing, pull
and hold the W button down again to the
point of resistance until the sliding sunroof is
closed.
The sliding sunroof will be closed with
increased force.
If the sliding sunroof is obstructed again and
opens ag
ain slightly: 
Repeat the previous step.
The sliding sunr
oof will be closed again with
increased force.
Vehicles with a panorama sliding sunroof: the slid-
ing sunr
oof or the roller sunblind is not operating
smoothly. 
Reset the sliding sunroof and the roller sun-
blind.
Resetting the sliding sunroof and the roller sun-
blind 
Pull and hold the W butt
on little by little
until the sliding sunroof is fully closed. 
Pull and hold the W butt
on little by little
until the roller sunblind is fully closed. 
Use automatic operation to fully open and
t

hen close the sliding sunroof. Anti-thes
pr
otection Function of the immobiliser
The immobiliser prevents your vehicle from being
s

tarted without the correct key.
The immobiliser is automatically activated when
the vehicle is switched oM, and deactivated when
the vehicle is switched on. ATA
(Anti-
Thes Alarm system) Function of the ATA system
If t

he ATA system is primed, a visual and audible
alarm is triggered in the following situations:
= when a door is opened
= when the tailgate is opened
= when the bonnet is opened
= when interior protection is triggered
( page 106) 104
Opening and closing

=
when t ow-away protection is triggered
( page 105)
The ATA system is primed automatically aser
approximately ten seconds in the following situa-
tions:
= aser locking the vehicle with the key
= aser locking the vehicle using KEYLESS-GO Indicator lamp
1 Oashes when t he ATA system is
primed.
The ATA system is deactivated automatically in the
following situations:
= aser unlocking the vehicle with the key
= aser unlocking the vehicle using KEYLESS-GO
= aser pressing the start/stop button with the
key in the stowage compartment
( page 174)
% When the Mercedes!

=
aser pr essing the start/stop button with the
key in the stowage compartment
( page 174)
= aser unlocking the vehicle using KEYLESS-GO
= when using HANDS-FREE ACCESS
Information on collision detection on a parked
vehicle ( page 227). Priming/deactivating tow-away protection
Multimedia system:
4 © 5
Settings 5
Quick access 
Prime or deactivate Tow-away protection .
Tow-away protection is primed again in the follow-
ing cases:
= The v

ehicle is unlocked again.
= A door is opened.
= The vehicle is locked again.
% If quick access is unavailable, select the Vehi-
cle submenu in t
he Settings main menu to
prime or deactivate tow-away protection. Function of interior protection
When interior protection is primed, a visual and
audible alar

m is triggered if movement is detected
in the vehicle interior.
Interior protection is primed automatically aser
approximately ten seconds:
= aser locking the vehicle with the key
= aser locking the vehicle using KEYLESS-GO
Interior protection is only primed when the follow-
ing components are closed:
= Doors
= Tailgate
Interior protection is automatically deactivated: = aser pressing the Ü or p button on the
key
= aser pressing the start/stop button with the
key in the stowage compartment
( page 174)
= aser unlocking the vehicle using KEYLESS-GO
= when using HANDS-FREE ACCESS The following situations can lead to a false alarm:
= when t

here are moving objects suchas mas-
cots in the vehicle interior
= when a side window is open
= when a panoramic sliding sunroof is open Priming/deactivating interior protection
Multimedia system:
4 © 5
Settings 5
Quick access 
Prime or deactivate Interior motion sensor .
Interior protection is primed again in the following
cases:
= The v

ehicle is unlocked again.
= A door is opened.
= The vehicle is locked again.
% If quick access is unavailable, select the Vehi-
cle menu under Settings t

o prime or deacti-
vate interior protection. 106
Opening and closing

Notes on the correct driver's seat position
&
WARNING Risk of accident due t o adjust-
ing the vehicle settings while the vehicle is
in motion
You could lose control of the vehicle in the fol-
lo
wing situations in particular:
= if you adjust the driver's seat, the head
restraint, the steering wheel or the mirror
while the vehicle is in motion
= if you fasten your seat belt while the vehi-
cle is in motion 
Before starting the vehicle: in particular,
adjus

t the driver's seat, head restraint,
steering wheel and mirror, and fasten
your seat belt. Ensure the following when adjusting the steering
wheel 1, seat belt 2 and dr

iver's seat 3:
= You are sitting as far away from the driver's
airbag as possible, taking the following points
into consideration:
= You are sitting in an upright position
= Your thighs are slightly supported by the seat
cushion =
Y
our legs are not fully extended and you can
depress the pedals properly
= The back of your head is supported at eye
level by the centre of the head restraint
= You can hold the steering wheel with your
arms slightly bent
= You can move your legs freely
= You can see all the displays on the instrument
display clearly.
= You have a good overview of the traPc condi-
tions
= Observe the notes on correctly fastening the
seatbelt (  page 49). Seats
Adjusting the front seat mechanically (without
Seat Comf

ort Package) &
WARNING Risk of becoming tr
apped if the
seats are adjusted by children
Children could become trapped if they adjust
t
he seats, particularly when unattended. Seats and stowing
107