MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

Towing eye storage location
The towing eye is under the load compartment
Ooor
.
Depending on the vehicle equipment, the towing
eye may be located at a diMerent position in the
load compartment. Fitting and removing the towing eye 
Press the mark on cover 1 in
wards and
remove. 
Screw in the towing eye clockwise as far as it
will go and tight

en.
Vehicles with a trailer hitch: v
ehicles with a trailer
hitch do not have a rear bracket for the towing
eye. Fasten the tow bar to the trailer hitch. 
Make sure that cover 1 eng
ages in the
bumper when you remove the towing eye.
* NOTE Damag
e to the vehicle due to incor-
rect use of the towing eye or trailer hitch When a towing eye or trailer hitch is used to
r
ecover a vehicle, the vehicle may be damaged
in the process. 
Only use the towing eye or trailer hitch to
t

ow away or tow start the vehicle. 
Do not use the towing eye or trailer hitch
t

o tow the vehicle during recovery. Tow-starting the vehicle
Vehicles with automatic transmission
* NOTE Damag
e to the automatic transmis-
sion due to tow-starting The automatic transmission may be damaged
in t
he process of tow-starting vehicles with
automatic transmission. 
Vehicles with automatic transmission
mus

t not be tow-started. 
Vehicles with an automatic transmission must
no

t be tow-started.
Vehicles with manual transmission 
Observe the notes on towing away
( pag
e 375). 
If necessary, allow the engine and exhaust
sy

stem to cool down. 
Switch on the ignition. 
Engage second gear. 
Release the electric parking brake. 378
Breakdown assistance


Tow-start the vehicle while the clutch pedal is
full y depressed. 
Slowly release the clutch pedal. 
Immediately shis t
o neutral if the engine
starts. 
Stop the vehicle in accordance with the tr
aPc
conditions. 
Remove the tow bar. 
Remove the towing eye. 
Have the vehicle checked at a q
ualiNed spe-
cialist workshop. Electrical fuses
Notes on electrical fuses
&
WARNING Risk of accident and injur
y due
to overloaded lines
If you manipulate or bridge a faulty fuse or if
y
ou replace it with a fuse with a higher amper-
age, the electric line could be overloaded.
This could result in a Nre. 
Always replace faulty fuses with speci-
Ned ne

w fuses containing the correct
amperage. *
NOTE Damag
e due to incorrect fuses Using incorrect fuses can result in damage to
electr
ical components or systems or their
functions being considerably restricted. 
Use only fuses approved for Mercedes-
Benz wit

h the respective speciNed fuse
rating. Blown fuses must be replaced with fuses of the
same r

ating, which you can recognise by the col-
our and the label. The fuse ratings and further
information to be observed can be found in the
fuse assignment diagram.
Fuse assignment diagram: on the fuse box in the
engine compartment ( page 380). *
NOTE Damag
e or malfunctions caused by
moisture Moisture may cause damage to the electrical
sy
stem or cause it to malfunction. 
When the fuse box is open, make sure
t

hat no moisture can enter the fuse box. 
When closing the fuse box, make sure
t

hat the seal of the lid is positioned cor-
rectly on the fuse box. If the newly inserted fuse also blows, have the
cause tr
aced and rectiNed at a qualiNed specialist
workshop.
Ensure the following before replacing a fuse:
= The vehicle is secured against rolling away.
= All electrical consumers are switched oM.
= The vehicle is switched oM.
The electrical fuses are located in various fuse
boxes: = Fuse box in the engine compartment on the
les-hand side of the vehicle, when viewed in
the direction of travel (  page 380) Breakdown assistance
379

=
F use box in the front passenger footwell
( page 380)
= Fuse box in the centre of the load compart-
ment ( page 381) Opening and closing the fuse box in the engine
com

partment Requirements:
= A dr

y cloth and a screwdriver are available.
Observe the notes on electrical fuses
( page 379).
Open &
WARNING Risk of injur
y from using the
windscreen wipers when the bonnet is
open
If the windscreen wipers start moving when
t
he bonnet is open, you could be trapped by
the wiper linkage. 
Always switch oM t
he windscreen wipers
and vehicle before opening the engine
bonnet. 
Open the bonnet. 
Remove any existing moisture from the fuse
bo

x using a dry cloth. 
Loosen screws 1. 
Press clamps 2 and lis t
he fuse box lid up
and out. The fuse assignment diagram is in a recess on the
side of t

he fuse box.
Closing 
Check whether the seal is positioned correctly
in t
he lid. 
Place the lid on the fuse box. 
Make sure that clamps 2 eng
age. 
Tighten screws 1. 
Close the bonnet. Opening and closing the fuse box in the front
passeng

er footwell Observe the notes on electrical fuses
(
 pag

e 379). 380
Breakdown assistance

Opening

Lis carpet 1 in the direction of the arrow. 
Loosen screws 2 and r
emove the fuse box
lid from the top.
Closing 
Place the lid on the fuse box. 
Tighten screws 2. 
Fold back the carpet. Opening and closing the fuse box in the load com-
par

tment Observe the notes on electrical fuses
(
 pag

e 379). 
Open the load compartment Ooor
. Fuse box
1 is locat
ed underneath the load com-
partment Ooor. Breakdown assistance
381

Notes on noise or unusual handling characteris-
tics
Mak
e sure there are no vibrations, noises or
unusual handling characteristics when the vehicle
is in motion. This may indicate that the wheels or
tyres are damaged. Hidden tyre damage could
also be causing the unusual handling characteris-
tics.
If you suspect that a tyre is defective, reduce your
speed immediately and have the tyres and wheels
checked at a qualiNed specialist workshop. Notes on regularly inspecting wheels and tyres
&
WARNING Risk of injur
y due to damaged
tyres
Damaged tyres can cause tyre pressure loss. 
Check the tyres regularly for signs of
damag
e and replace any damaged tyres
immediately. &
WARNING Risk of aq
uaplaning due to
insuPcient tyre tread
*nsuPcient tyr
e tread will result in reduced
tyre grip.
The risk of aquaplaning is increased on wet
roads, especially when the speed of the vehi-
cle is not adapted to suit the conditions. 
Thus, you should regularly check the
tr

ead depth and the condition of the
tread across the entire width of all tyres.
Minimum tread depth for:
= Summer tyr

es: 3 mm
= M+S tyres: 4 mm 
For safety reasons, replace the tyres
bef
ore the legally-prescribed limit for the
minimum tread depth is reached. Carry out the following checks on all wheels regu-
lar
ly, at least once a month or as required, for
example, prior to a long journey or driving oM-
road:
= Check the tyre pressure (  page 383).=
V
isually inspect wheels and tyres for damage.
= Check the valve caps.
= Visual check of the tyre tread depth and the
tyre contact surface across the entire width.
The minimum tread depth for summer tyres is
3 mm and for winter tyres 4 mm. Notes on snow chains
&
WARNING Risk of accident due t
o incor-
rectly Ntted snow chains
If you have Ntt
ed snow chains to the rear
wheels, they may drag against the vehicle
body or chassis components. 
Never Nt sno
w chains on the rear
wheels. 
Only Nt sno
w chains on the front wheels
in pairs. 382
Wheels and tyres

*
NOTE Damag e to vehicle body or suspen-
sion components caused by Ntted snow
chains On 4MATIC vehicles, if you
Nt sno
w chains on
the rear wheels, you can damage vehicle body
or suspension components. 
On 4MATIC vehicles, only Nt sno
w chains
on the front wheels. *
NOTE Damag
e to the wheel trim from Nt-
ted snow chains If snow chains are
Ntt
ed to steel wheels, the
wheel trims can be damaged. 
Remove the wheel trims of steel wheels
bef
ore Ntting snow chains. Observe the following notes when using snow
c

hains:
= Snow chains are only permissible for certain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Centre. =
F
or safety reasons, only use snow chains that
have been speciNcally approved for your vehi-
cle by Mercedes-Benz, or snow chains with
the same quality standard.
= If snow chains are Ntted, the maximum per-
missible speed is 50 km/h.
= Vehicles with Active Parking Assist: do not use
Active Parking Assist when snow chains are
Ntted.
% You can permanently limit the maximum
speed f

or driving with winter tyres
(  page 240).
% You can deactivate ESP n
t
o pull away
( page 233). This allows the wheels to spin,
achieving an increased driving force. Tyre pressure
Notes on tyre pressure
&
WARNING Risk of accident due t
o insuP-
cient or excessive tyre pressure
UnderinOated or o
verinOated tyres pose in par-
ticular the following risks:
= The tyres can burst.
= The tyres can wear excessively and/or
unevenly.
= The driving characteristics as well as the
steering and braking characteristics may
be greatly impaired. 
Comply with the recommended tyre
pr

essure and check the tyre pressure of
all tyres, including the spare wheel, regu-
larly:
= mont
hly
= when the load changes
= before embarking on a longer journey Wheels and tyres
383

=
if oper ating conditions change, e.g. oM-
road driving 
Adjust the tyre pressure, if necessary. Tyre pressure which is too high or too low can:
= Shor

ten the service life of the tyres.
= Cause increased tyre damage.
= Adversely aMect driving characteristics and
thus driving safety, e.g. due to aquaplaning. &
WARNING Risk of accident due t
o repea-
ted pressure drop in the tyres
The wheels, valves or tyres could be damaged.
T
oo low a tyre pressure can lead to the tyres
bursting. 
Examine the tyres for foreign objects. 
Check whether the tyre has a puncture
or t

he valve has a leak. 
If you are unable to rectify the damage,
cont

act a qualiNed specialist workshop. Information on the recommended tyre pressure
f

or the vehicle's factory-Ntted tyres can be found
on the tyre pressure table on the inside of the fuel
Nller Oap ( page 384).
Use a suitable pressure gauge to check the tyre
pressure. The outer appearance of a tyre does not
permit any reliable conclusion about the tyre pres-
sure.
Only correct tyre pressures when the tyres are
cold. Conditions for cold tyres:
= The vehicle has been parked with the tyres out
of direct sunlight for at least three hours.
= The vehicle has travelled less than 1.6 km.
The vehicle's tyres heat up when driving. As the
temperature of the tyres increases, so too does
the tyre pressure.
Vehicles with a tyre pressure monitoring system:
you can also check the tyre pressure using the
on-board computer ( page 385).
Notes on trailer operation
Always inOate the rear axle tyres to the recom-
mended tyre pressures on the tyre pressure table
for increased load. Tyre pressure table
The tyre pressure table is on the inside of the fuel
Nller Oap. The tyre pressure table shows the recommended
tyr

e pressure for all tyres approved for this vehi-
cle. The recommended tyre pressures apply for
cold tyres under various operating conditions, i.e.
loading and/or speed of the vehicle. 384
Wheels and tyres

If one or more tyre sizes precede a tyre pressure,
t he following tyre pressure information is only
valid for those tyre sizes and their respective load
condition.
If the preceding tyre sizes are complemented by
the

=
Tyre pressure monitor active : t
he teach-in
process of the system is not yet complete. The
tyre pressures are already being monitored. 
Compare the tyre pressure with the recom-
mended tyr
e pressure for the current operat-
ing condition ( page 384). Additionally,
observe the notes on cold tyres
( page 383).
% The values displayed in the on-board com-
put

er may deviate from those of the tyre pres-
sure gauge as they refer to sea level. At high
elevations, the tyre pressure values indicated
by a pressure gauge are higher than those
shown by the on-board computer. In this case,
do not reduce the tyre pressure.
Restarting the tyre pressure monitoring system
R
equirements:
= The recommended tyre pressure is correctly
set for the respective operating status on all of
the wheels (  page 383).
Restart the tyre pressure monitoring system in the
following situations: = The tyre pressure has changed. =
The wheels or tyr
es have been changed or
newly Ntted.
On-board computer: 4 Service 5
Tyres 
Swipe downwards on Touch Control on the
les-hand side of t

he steering wheel.
The Use current pressures as new reference
values" message is shown in the Instrument
Display. 
To restart, press Touch Control on the les-
hand side of t

he steering wheel.
The Tyre press. monitor restarted message is
shown in the Instrument Display.
Current warning messages are deleted and
the yellow w warning lamp goes out.
Aser you have been driving for a few minutes,
the system checks whether the current tyre
pressures are within the speciNed range. The
current tyre pressures are then accepted as
reference values and monitored.
Be sure to also pay attention to the following rela-
t
ed topic:
= Notes on tyre pressure ( page 383) Tyre pressure loss warning system
Function of the tyre pressure loss warning system
The tyr
e pressure loss warning system warns the
driver by means of display messages when there
is a severe tyre pressure loss.
System limits
The system may be impaired or may not function
particularly in the following situations:
= incorrect reference values were taught in
= sudden pressure loss caused by a foreign
object penetrating the tyre, for example
= an even pressure loss on more than one tyre
occurs
The system has a restricted or delayed function
particularly in the following situations:
= poor ground conditions, e.g. snow or gravel
= driving with snow chains
= when adopting a very sporty driving style with
high cornering speeds or sudden acceleration
= driving with a very heavy or large trailer
= driving with a high load 386
Wheels and tyres

The tyre pressure loss warning system is only an
aid. It is t he driver's responsibility to set the tyre
pressure to the recommended cold tyre pressure
suitable for the operating situation and to check
it.
Be sure to also observe the following further rela-
ted subjects:
= Notes on tyre pressure (  page 383)
= Display messages about the tyres
( page 478)
Restarting the tyre pressure loss warning system
Requirements: = The recommended tyre pressure is correctly
set for the respective operating status on all
wheels.
Restart the tyre pressure loss warning system in
the following situations:
= The tyre pressure has changed.
= The wheels or tyres have been changed or
newly Ntted. On-board computer:
4 Service 5
Tyres 
Swipe downwards on Touch Control on the
les-hand side of t

he steering wheel.
The Run Flat Indicator active Restart mes-
sage is shown in the display. 
To begin restart, press Touch Control on the
les-hand side of t

he steering wheel.
The Tyre pressure now OK" message is
shown in the display. 
Select Yes . 
To conNr
m restart, press Touch Control on the
les-hand side of the steering wheel.
The Run Flat Indicator restarted message is
shown in the display.
Aser you have driven for a few minutes, the
tyre pressure loss warning system monitors
the set tyre pressures of all the tyres.
Be sure to also pay attention to the following rela-
t
ed topic:
= Notes on tyre pressure ( page 383) Wheel change
Notes on selecting,
Ntting and r
eplacing tyres &
WARNING Risk of accident due t
o incor-
rect wheel and tyre dimensions
If wheels and tyres of the wrong size are Ntt
ed,
the service brakes or components in the brake
system and in the wheel suspension may be
damaged. 
Always replace wheels and tyres with
t

hose that fulNl the speciNcations of the
original part.
For wheels, pay attention to the following:
= Designation
= T

ype
For tyres, pay attention to the following: = Designation
= Manufacturer
= Type Wheels and tyres
387