MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

&
WARNING Risk of accident due t o mis-
judgement of distance when using the
outside mirror
The outside mirrors r
eOect objects on a
smaller scale. The objects in view are in fact
closer than they appear. 
Therefore, always look over your shoul-
der in or

der to ensure that you are aware
of the actual distance between you and
the road users driving behind you. 
To fold in or out: br
ieOy press button 2. 
To set: pr
ess button 1 or 3 to select the
outside mirror to be adjusted. 
Use button 4 t
o adjust the position of the
mirror glass.
% If the battery has been disconnected or com-
ple

tely discharged, you will have to reset the outside mirrors. Only then will the automatic
mir
ror folding function work properly. 
To reset: br
ieOy press button 2.
An outside mirror that has been pushed out of
position can be eng aged in position again as fol-
lows: 
Vehicles without electrically folding outside
mir

rors: manually move the outside mirror into
the correct position. 
Vehicles with electrically folding outside mir-
r
ors : press and hold button 2.
You will hear a click and the mirror will audibly
click into place. The outside mirror will now be
set to the correct position. Automatic anti-dazzle mirrors function
&
WARNING Risk of acid bur
ns and poison-
ing due to the anti-dazzle mirror electro-
lyte
Electrolyte may escape if the glass in an auto-
matic anti-dazzle mir
ror breaks.158
Light and sight

The electrolyte is hazardous to health and cau-
ses ir
ritation. It must not come into contact
with your skin, eyes, respiratory organs or
clothing or be swallowed. 
If you come into contact with electrolyte,
obser
ve the following:
= Immediately rinse the electrolyte
from your skin with water and seek
medical attention.
= If electrolyte comes into contact with
your eyes, immediately rinse them
thoroughly with clean water and seek
medical attention.
= If the electrolyte is swallowed, imme-
diately rinse your mouth out thor-
oughly. Do not induce vomiting. Seek
medical attention immediately.
= Immediately change out of clothing
which has been contaminated with
electrolyte.
= If an allergic reaction occurs, seek
medical attention immediately. The inside rearview mirror and the outside mirror
on t
he driver's side will automatically go into anti-
dazzle mode if light from a headlamp hits the sen-
sor on the inside rearview mirror.
System limits
The system will not go into anti-dazzle mode if:
= The vehicle is switched oM.
= Reverse gear is engaged.
= The interior lighting is switched on. Front-passenger outside mirror parking position
function
The parking position makes parking easier.
The fr
ont-passenger outside mirror will swivel
downwards in the direction of the rear wheel on
the front passenger's side when:
= the parking position is stored (  page 160).
= the front-passenger mirror is selected.
= reverse gear is engaged. The front-passenger outside mirror will move back
t

o its original position when:
= you shis the transmission to another transmis-
sion position.
= you are travelling at a speed greater than
15 km/h.
= you press the button for the outside mirror on
the driver's side. Light and sight
159

Storing the parking position of the front-
passeng
er outside mirror using reverse gear Storing

Press button 1 t
o select the front-passenger
outside mirror. 
Engage reverse gear. 
Move the front-passenger outside mirror into
t

he desired parking position using button 2.Calling up 
Press button 1 t
o select the front-passenger
outside mirror. 
Engage reverse gear.
The fr
ont-passenger outside mirror will move
into the stored parking position. Activating/deactivating the automatic mirror fold-
ing function
Multimedia system:
4 © 5
Settings 5
Vehicle 
Activate or deactivate Automatic fold-in.160
Light and sight

Overview of climate control systems
Notes on climate control
For the air-conditioning system, pollution level
monit
oring and air Nltration to function correctly,
an interior air Nlter must always be used. Make
sure that the Nlter is installed correctly. Use Nlters
recommended and approved by Mercedes-Benz.
Always have maintenance work carried out at a
qualiNed specialist workshop. Overview of the air conditioning control panel
The indicator lamps on the buttons indicate that
t
he corresponding function is activated. THERMATIC air conditioning control panel with sta-
tionar
y heater (example)
1 | Se
ts the temperature on the driver's
side
2 Vehicles with THERMATIC or THERMOTRONIC
oper
ating unit with stationary heater: &
calls up the air conditioning menu
Vehicles with THERMOTRONIC operating unit
wit
hout stationary heater:

A
Vehicles with THERMATIC operating unit
(wit
h/without stationary heater):

Setting the air distribution
Multimedia system:
4 Climate menu 
Call up the air conditioning menu
( pag e 162). 
Select a row of seats. 
To set the air distribution: select a, P
or O. 
Set the airOo
w.
% Several air distributions can be selected at
t

he same time, e.g. to air-condition both the
windscreen and the footwell.
The a climate control for the windscreen
can only be selected for the Nrst seat row. Switching the synchronisation function
on/oM via
t
he air conditioning control panel Climate control can be set centrally using the syn-
c

hronisation function. The temperature and air
distribution settings for the driver's side will be
adopted automatically for the front passenger
side. 
Press the  butt
on.
The synchronisation function will be deactivated if
t
he settings for one of the other climate zones are
changed. Switching the synchronisation function
on/oM via
t
he multimedia system Multimedia system:
4 Climate menu 5
First row of seats
Climat

e control can be set centrally using the syn-
chronisation function. The driver's settings for
temperature, air quantity and air distribution will
be adopted automatically for all climate zones. 
Select SYNC and switc
h on or oM. Demisting the windows
Windows misted up on the inside

Press the X butt
on. 
If the windows remain misted up: press
t

he d button. Windows misted up on the outside 
Switch on the windscreen wipers. 
Press the X butt
on. Switching air-recirculation mode
on/oM 
Press the r butt
on.
The interior air will be recirculated.
Air-recirculation mode automatically switches to
fr
esh air mode aser a while.
% If air-recirculation mode is switched on, the
windo

ws may mist up more quickly. Switch on
air-recirculation mode only brieOy. Switching residual heat
on/oM Requirements:
= t

he vehicle is parked.
% Only vehicles with a diesel engine can use
r

esidual heat.
It is possible to make use of the residual heat
fr
om the engine to continue heating or ventilating
the front compartment of the vehicle for approx- Climate control
163

imately 30 minutes, depending on the tempera-
tur
e set. 
To activate: pr
ess the V button.
Residual heat will be switched oM aut
omatically.Pre-entry climate control via the key (plug-in
h

ybrid) Function of pre-entry climate control via the key
(plug-in h
ybrid)
Before entering the vehicle, the driver's side or
the whole vehicle interior can be brieOy pre-
warmed or pre-cooled.
When pre-cooling, the following functions are acti-
vated as needed:
= Automatic climate control
= Blower
= Seat ventilation
When pre-heating, the following functions are acti-
vated as needed:
= Automatic climate control
= Blower =
Seat heating
= S

teering wheel heater
= Mirror heater
= Rear window heater
Setting pre-entry climate control via the key (plug-
in hybrid)
Multimedia system:
4 Climate menu 5
Pre-entry climate ctrl
Switching on/oM 
Select =. 
Select Pre-entry climate control via key.
Activating/deactivating pre-entry climate control
via t
he key (plug-in hybrid)
Requirements: = The high-voltage battery is charged suP-
ciently.
= The function has been activated via the multi-
media system. 
To switch on: unloc
k the vehicle.
The climate control functions are activated for
up to Nve minutes for pre-heating and pre-
cooling.
Pre-entry climate control via the key cannot be
activ
ated more than twice when the vehicle is
switched oM. 
To switch oM: push t
he ; button up or
down.
The following functions will remain active once the
v
ehicle has been started:
= Seat heating
= Seat ventilation 164
Climate control

Pre-entry climate control for departure time (plug-
in h
ybrid) Function of pre-entry climate control for depar-
tur
e time (plug-in hybrid) &
WARNING Risk of f
atal injury due to expo-
sure to extreme heat or cold in the vehicle
If persons, particularly children, are subjected
t
o prolonged exposure to intense heat or cold,
there is a risk of severe injury or even death. 
Never leave persons, particularly chil-
dr
en, unattended in the vehicle. The vehicle interior can be air conditioned when
t

he vehicle is parked.
When the vehicle is connected to power supply
equipment, priority is given to charging the high-
voltage battery to a speciNed minimum charge.
The running time of pre-entry climate control may
be reduced under the following conditions:
= The vehicle is not connected to power supply
equipment. =
The high-v
oltage battery is not charged suP-
ciently.
With active pre-entry climate control, the charge
level of the high-voltage battery may be reduced,
even if the charging cable connector is connec-
ted.
For cooling, the following functions are activated
as needed:
= Automatic climate control
= Blower
= Seat ventilation
For heating, the following functions are activated
as needed:
= Automatic climate control
= Blower
= Seat heating
= Steering wheel heater
= Mirror heater
= Rear window heater Setting pre-entry climate control for departure
time (plug-in h
ybrid)
Multimedia system:
4 Climate menu 5
Pre-entry climate ctrl
Setting a single departure time 
Select ONCE. 
Set a departure time.
Changing the active departure time 
Select the pen icon next to the displayed
depar
ture time. 
Set a departure time.
Setting the week pr
oNle 
Select WEEK PROFILE . 
Set the desired departure times, e.g. every
da
y at 08:00.
Selecting the zone 
Select =. Climate control
165


Select Driver's seat only.
If t he Driver's seat only setting is deactivated,
pre-entry climate control will take place for
the entire vehicle.
Activating/deactivating pre-entry climate control
f
or departure time (plug-in hybrid)
Requirements: = The high-voltage battery is charged suP-
ciently.
= The function has been activated via the multi-
media system. 
To activate: se
t the departure time
( page 165).
Pre-entry climate control for departure time
switches on a maximum of 55 minutes before
the selected departure time. It will remain
active for another Nve minutes if the departure
is delayed. 
To deactivate: pr
ess the ; button up or
down.
The following functions will remain active once the
v
ehicle has been started:
= Seat heating =
Seat v
entilation Activating/deactivating immediate pre-entry cli-
mat

e control &
WARNING Risk of f
atal injury due to expo-
sure to extreme heat or cold in the vehicle
If persons, particularly children, are subjected
t
o prolonged exposure to intense heat or cold,
there is a risk of severe injury or even death. 
Never leave persons, particularly chil-
dr
en, unattended in the vehicle. Air conditioning of the vehicle interior can con-
tinue f

or up to 50 minutes, e.g. if the journey is
interrupted. The colours of the indicator lamp have the follow-
ing meanings:
= Blue: cooling is activ

ated.
= Red: heating is activated.
= Yellow: the departure time has been preselec-
ted. 
Set the desired temperature using the


Press button 1 .
The r ed or blue indicator lamp on button 1
will light up or go out. Stationary heater/ventilation
Stationary heater/ventilation function
%
The following function is equipment-depend-
ent.
= The air inside t
he vehicle is heated or ventila-
ted to the set temperature.
= The air inside the vehicle cannot be cooled
down to temperatures below the outside tem-
perature.
= If the outside temperature changes, ventilation
mode will automatically switch to heating
mode or heating mode will automatically
switch to ventilation mode.
The stationary heater and the exhaust gas outlet
are situated in front of the right front wheel. Switching the stationary heater/ventilation
on/oM
via t
he operating unit &
DANGER Risk of f
atal injury due to poison-
ous exhaust gases
If the tailpipe is blocked or suPcient v
entila-
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter the vehi-
cle. This is the case in enclosed spaces or if
the vehicle gets stuck in snow, for example. 
Always switch the stationary heater oM in
enclosed spaces wit
hout an air extrac-
tion system, e.g. in garages. 
Keep the tailpipe and the area around
t

he vehicle free from snow when the
engine or the stationary heater is run-
ning. 
Open a window on the side of the vehicle
f

acing away from the wind to ensure an
adequate supply of fresh air. &
WARNING Risk of Nr
e due to hot station-
ary heater components and exhaust gases
Flammable materials such as leaves, grass or
twigs ma
y ignite. 
When the stationary heater is switched
on, mak

e sure that:
= hot vehicle parts do not come into
contact with Oammable materials.
= the exhaust gas can Oow out of the
stationary heater exhaust pipe unhin-
dered.
= the exhaust gas does not come into
contact with Oammable materials. *
NOTE Batt
ery discharge caused by sta-
tionary heater or stationary ventilation
operation Operating the stationary heater or stationary
v

entilation drains the battery. 
Aser heating or v
entilating the vehicle
twice, drive for a longer period of time. Climate control
167