MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

take control of vehicle
messag e prompt you to
take control of the vehicle.
The vehicle is not automatically braked and can
roll away. You have to accelerate, brake, steer and
change gear yourself again. Manoeuvring assistant
Function of Drive Away Assist
%
Drive Away Assist is only available for vehicles
wit
h automatic transmission.
Drive Away Assist can reduce the severity of an
im
pact when pulling away. If an obstacle is detec-
ted in the direction of travel, the vehicle's speed
is brieOy reduced to approx. 2 km/h. If a critical
situation is detected, the É symbol appears in
the media display.
Drive Away Assist can be deactivated or activated
in the Manoeuvring assistance menu
(  page 279).
% You can cancel an intervention by Drive Away
Assis
t at any time by deactivating Parking
Assist PARKTRONIC ( page 272). &
WARNING Risk of accident caused b
y limi-
ted detection performance of Drive Away
Assist
Drive Away Assist cannot always clearly iden-
tify objects and tr

aPc situations. 
Always pay careful attention to the tr
aPc
situation; do not rely on Drive Away
Assist alone. 
Be prepared to brake or swerve as nec-
essar

y, provided the traPc situation per-
mits and that it is safe to take evasive
action. Drive Away Assist is only an aid. It is not a substi-
tut

e for your attention to the surroundings. The
responsibility for safe manoeuvring and parking
remains with you. Make sure that no persons, ani-
mals or objects etc. are in the manoeuvring
range.
A risk of collision may occur in the following situa-
tions, forexample:
= If the accelerator and brake pedals are inter-
changed. =
If an incor
rect transmission position is
engaged.
Drive Away Assist is active under the following
conditions:
= If Parking Assist PARKTRONIC is activated.
= If you shis the transmission position to k or
h when the vehicle is stationary.
= If the detected obstacle is less than approx.
1.0 m away.
= If the manoeuvring assistance function is acti-
vated in the multimedia system.
System limits
The performance of Drive Away Assist is limited
on inclines.
When driving with a trailer, Drive Away Assist is
not available.
% Also observe the system limits of Parking
Assis

t PARKTRONIC ( page 269).
Function of Cross T
raPc Alert
% Cross T
raPc Alert is only available for vehicles
with Blind Spot Assist or Active Blind Spot
Assist. 278
Driving and parking

Cross
TraPc Alert can warn drivers of any cross-
ing traPc when reversing and manoeuvring out of
a parking space. The radar sensors in the bumper
also monitor the area adjacent to the vehicle. If a
critical situation is detected, the / symbol
appears in the media display and the vehicle can
be braked automatically.
If the radar sensors are obstructed by vehicles or
other objects, detection is not possible.
Cross TraPc Alert is active under the following
conditions:
= if the vehicle is reversing at a walking pace.
= manoeuvring assistance is activated
( page 279).
% Also observe the instructions on Blind Spot
Assis
t and Active Blind Spot Assist
(  page 258).
System limits
Cr
oss TraPc Alert is not available on inclines.
Cross TraPc Alert is not available when driving
with a trailer. Activating/deactivating manoeuvring assistant
Multimedia sy

stem:
4 © 5
Settings 5
Assistance
5 Camera & parking 
Activate/deactivate Manoeuvring assistance.
% Manoeuvring assistant must be active for the
function of Dr

ive Away Assist (  page 278)
and Cross TraPc Alert (  page 278). Trailer hitch
Notes on trailer operation
*
NOTE The oper
ating permit may be invali-
dated due to the illegal installation of
trailer hitches The installation !

In the event of increased rear axle load, the car/
tr
ailer combination must not exceed a maximum
speed of 100 km/h for reasons concerning the
operating permit. This also applies in countries in
which the permissible maximum speed for car/
trailer combinations is above 100 km/h. Folding the ball neck out and in
&
WARNING Risk of accident due t
o the ball
neck not being engaged
If the ball neck is not engaged, the trailer may
come loose. 
Always engage the ball neck as descri-
bed. &
WARNING Risk of injur
y from ball neck
swinging outwards
The ball neck may swing outwards when
unloc
king or when it has not been properly
engaged.
There is a risk of injury within the ball neck's
range of movement! 
Unlock the ball neck only when its range
of mo

vement is unobstructed. 
Always be sure the ball neck is engaged
when f

olding inwards. *
NOTE Incr
eased risk of damage to prop-
erty due to folded-out ball neck 
When the trailer is not coupled or the
bicy
cle rack is attached, fold in the ball
neck or, in the case of a fully electric
trailer hitch, retract the ball neck. *
NOTE Damag
e to the vehicle due to incor-
rect use of the trailer hitch When a trailer hitch is used to recover a vehi-
cle, t
he vehicle may be damaged in the proc-
ess. 
Use the trailer hitch only for pulling a
tr

ailer or attaching approved carrier sys-
tems (e.g. a bicycle rack). Requirements:
= The v

ehicle is secured against rolling away. =
The swiv
el range is clear.
= The trailer cables or adapter plugs have been
removed.
Folding the ball neck out 
Pull switch 2 until t
he ball neck unlocks.
The ball neck will fold out from under the rear
bumper.
Indicator lamp 1 will Oash.280
Driving and parking


Pull the ball neck in the direction of the arrow
until it eng
ages audibly in a vertical position.
Indicator lamp 1 on the ball neck release
switch will go out.
If the ball neck is not securely locked in place,
the Trailer coupling Check lock message will
appear on the instrument display. 
Remove the cover cap from the ball head and
s

tore it in a safe place. Make sure that the ball on the ball neck is clean.
Chec
k that it is either greased or dry (grease-
free), depending on the instructions for the trailer.
Folding the ball neck in 
Pull switch 2 until t
he ball neck unlocks.
The ball neck will fold up under the rear
bumper.
Indicator lamp 1 will Oash. 
Push the ball neck in the direction of the
ar
row until it engages audibly behind the
bumper.
Indicator lamp 1 will go out and the message
on the instrument display will disappear.
Observe the information about the displays on the
ins
trument cluster:
= Indicator and warning lamps (  page 488)
= Display messages ( page 420) Coupling up/uncoupling a trailer
Requirements:
= The ball nec

k is extended and engaged in a
securely locked position. Trailers with a 7-pin plug can be connected to the
v
ehicle with the following adapters:
= Adapter plug
= Adapter cable
The trailer will be correctly detected by the vehi-
cle only if the following conditions are met:
= The trailer is connected correctly.
= The trailer lighting system is in working order.
The functions of the following systems will be
aMected by a correctly connected trailer:
= ESP n
trailer stabilisation
= Active Lane Keeping Assist
= Parking Assist PARKTRONIC
= Active Parking Assist
= Blind Spot Assist or Active Blind Spot Assist
= Drive Away Assist
= Cross TraPc Alert
= Reversing camera
= 360° camera Driving and parking
281

Coupling up a trailer
* NOTE Damag e to the starter battery due
to full discharge Charging the trailer battery using the power
suppl

y of the trailer can damage the starter
battery. 
Do not use the vehicle's power supply to
c

harge the trailer battery. 
Remove the cover cap from the ball head and
s

tore it in a safe place. 
Position the trailer on a level surface behind
t

he vehicle and couple it up to the vehicle. 
Open the socket cap. 
Insert the plug with lug 1 int
o groove 3 on
the socket. 
Turn bayonet coupling 2 t
o the right as far as
it will go. 
Let the cap engage. 
Secure the cable to the trailer with cable ties
(onl
y if you are using an adapter cable). 
Make sure that the cable is always slack for
ease of mo
vement during cornering.
In the following circumstances, a message may
appear on t
he instrument display even if the
trailer has been connected correctly:
= LEDs have been installed in the trailer lighting
system.
= The current has fallen below the trailer lighting
system's minimum current (50 mA).
% Accessories can be connected to the perma-
nent po

wer supply up to 180 W and to the
power supply that is switched on via the igni-
tion lock. Uncoupling a trailer &
WARNING Risk of being cr
ushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
iner
tia-activated brake, your hand may
become trapped between the vehicle and the
trailer drawbar. 
Do not uncouple trailers with an engaged
o
verrun brake. *
NOTE Damag
e during uncoupling with an
engaged overrun brake The vehicle may be damaged if you uncouple
wit
h an engaged overrun brake. 
Do not uncouple trailers with an engaged
o
verrun brake. 
Secure the trailer against rolling away. 
Disconnect the electrical connection between
t

he vehicle and the trailer. 
Uncouple the trailer. 282
Driving and parking


Place the cover cap on the ball head.
% Trailers with LED lighting: aser uncoupling t he
trailer, switch the vehicle on and then oM
again. Bicycle rack function
&
WARNING Risk of an accident if t
he bicy-
cle rack is used incorrectly
The bicycle rack may become detached from
t
he vehicle in the following cases:
= the permissible load capacity of the trailer
hitch is exceeded.
= the bicycle rack is used incorrectly.
= the bicycle rack is secured to the ball neck
beneath the ball head.
Observe the following for your own safety and
that of other road users:
= always adhere to the permissible load
capacity of the trailer hitch. =
alw
ays observe the permissible rear axle
load of the towing vehicle.
= use the bicycle rack only to transport bicy-
cles.
= always properly secure the bicycle rack by
attaching it to the ball head.
= use only bicycle racks approved by
Mercedes-Benz.
= always observe the bicycle rack operating
instructions. *
NOTE Damag
e to or breakage of the trailer
hitch due to unsuitable or improperly used
bicycle rack. 
Only use bicycle racks approved by
Mer
cedes-Benz properly as described
below. *
NOTE Incr
eased risk of damage to prop-
erty due to folded-out ball neck 
When the trailer is not coupled or the
bicy
cle rack is attached, fold in the ball neck or, in the case of a fully electric
tr
ailer hitch, retract the ball neck. *
NOTE The oper
ating permit may be invali-
dated due to the illegal installation of
trailer hitches The installation !

Depending on the bicycle rack's design, up to
t hree bicycles can be transported on the bicycle
rack.
When mounted by attaching to ball head 1, the
maximum load capacity is 75 kg.
The maximum load capacity is calculated from the
weight of the bicycle rack and the bicycle rack
load. Observe the notes on driving with a roof load,
tr

ailer or fully laden vehicle ( page 177).
When using a bicycle rack, set the tyre pressure
for increased load on the rear axle of the vehicle.
Further information on the tyre pressure can be
found in the tyre pressure table ( page 384).
Notes on loading
The larger the distance between the load's centre
of gravity and the ball head, the greater the load
on the trailer hitch.
Therefore, observe the following notes:
= mount heavy bicycles as close to the vehicle
as possible
= always distribute the load on the bicycle rack
as evenly as possible across the vehicle's lon-
gitudinal axis
Mercedes-Benz recommends removing all detach-
able parts from bicycles (e.g. baskets, child seats,
rechargeable batteries) before loading them onto
the bicycle rack. This will improve the aerody-
namic resistance and centre of gravity of the bicy-
cle rack. Always secure the bicycles to prevent them from
mo
ving around and check them at regular inter-
vals to ensure that they are secure.
Do not use tarpaulins or other covers. The driving
characteristics and rear view may be impaired. In
addition, aerodynamic resistance and the load on
the trailer hitch will increase. Load distribution on the bicycle rack
1 Vertical distance between centre of gravity
and ball head
2 Horizontal distance between centre of gravity
and ball head
3 The centre of gravity is on the vehicle's centre
axis 284
Driving and parking

Observe the following information when you are
loading t he bicycle rack with up to three bicycles:
Loading the bicycle rack Total weight
of bicy

cle
rack and load Max. distance
1
Max. distance
2
Up to 75 kg 420 mm 300 mm Vehicle towing instructions
The v
ehicle is not suitable for the use of tow bar
systems that are used for Oat towing or dinghy
towing, for example. Attaching and using tow bar
systems can result in damage to the vehicle.
When you are towing a vehicle with tow bar sys-
tems, safe driving characteristics cannot be guar-
anteed for the towing vehicle or the towed vehicle.
The vehicle-trailer combination may swerve from
side to side.
Observe the following information:
= Permitted towing methods (  page 373)
= Plug-in hybrid: permitted towing methods
( page 374) =
The no
tes on towing the vehicle with both
axles on the ground (  page 375) Driving and parking
285

Notes on the instrument display and on-board
com puter &
WARNING Risk of accident if t
he instru-
ment display fails
If the instrument display has failed or is mal-
functioning, function r
estrictions in systems
relevant to safety cannot be detected.
The operating safety of your vehicle may be
impaired. 
Drive on carefully. 
Have the vehicle checked immediately at
a q

ualiNed specialist workshop. Plug-in hybrid:
&
WARNING Risk of accident if t
he instru-
ment display fails
In the event of a failure or malfunction of the
ins
trument display, you will not recognise limi-
tations in the functions of systems relevant to
safety. This may impair operating safety. 
Park the vehicle safely as soon as possi-
ble and no

tify a qualiNed specialist work-
shop. &
WARNING Risk of dis
traction from infor-
mation systems and communications
equipment
If you operate information systems and com-
munication de
vices integrated in the vehicle
when driving, you could be distracted from the
traPc situation. This could also cause you to
lose control of the vehicle. 
Only operate this equipment when the
tr

aPc situation permits. 
If you cannot be sure of this, stop the
v
ehicle whilst paying attention to road
and traPc conditions and operate the
equipment with the vehicle stationary. You must observe the legal requirements for the
countr

y in which you are currently driving when
operating the on-board computer.
The on-board computer shows only display mes-
sages and warnings from speciNc systems on the instrument display. You must therefore ensure
t

hat your vehicle is always safe to operate.
If the operating safety of your vehicle is impaired,
park the vehicle immediately and in accordance
with the traPc conditions. Contact a qualiNed
specialist workshop. 286
Instrument display and on-board computer

Overview of instrument display
1
Les display area of the instrument display
(example: speedometer): speedometer /
time / date / trip computer From start and
From reset / range / audio
The segments on the speedometer indicate
t
he statuses of the following systems: cruise
control/limiter/Active Distance Assist
DISTRONIC 2
Outside temperature
3 Digital speedometer
4 Time
5 Right display area of the instrument display
(e xample: tachometer): tachometer / average
fuel consumption / ECO display /naviga-
tion / G-meter / assistant display / power meter / power availability display of the elec-
tr
ic motor (equipment-dependent)
The fuel supply will be interrupted to protect
t
he engine when the red mark on the rev
counter (overrevving range) is reached.
6 Index points
These show the selected display or menu con-
t
ent. Instrument display and on-board computer
287