MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

fuel with a sulphur content less than
50 ppm.
Never refuel with one of the following fuels: = P
etrol
= Marine diesel
= Heating oil
= Pure bio-diesel or vegetable oil
= ParaPn or kerosene
If you have accidentally refuelled with the
wrong fuel: 
Do not switch on the vehicle. 
Consult a q
ualiNed specialist workshop.*
NOTE Do no
t use diesel to refuel vehicles
with a petrol engine If you have accidentally refuelled with the
wr
ong fuel:
= Do not switch on the vehicle. Otherwise
fuel can enter the engine. Even small amounts of the wrong fuel
could r

esult in damage to the fuel system
and the engine. The repair costs are high. 
Consult a q
ualiNed specialist workshop. 
Have the fuel tank and fuel lines drained
com

pletely. *
NOTE Do no
t use petrol to refuel vehicles
with a diesel engine If you have accidentally refuelled with the
wr
ong fuel:
= Do not switch on the vehicle. Otherwise,
fuel can enter the fuel system.
Even small amounts of the wrong fuel
could result in damage to the fuel system
and the engine. The repair costs are high. 
Consult a q
ualiNed specialist workshop. 
Have the fuel tank and fuel lines drained
com

pletely. *
NOTE Damag
e to the fuel system due to
overNlling the fuel tank 
Only Nll t
he fuel tank until the pump noz-
zle switches oM.
If too much fuel has been added due, for
e
xample, to a faulty Nlling pump: 
Do not switch on the vehicle. 
Consult a q
ualiNed specialist workshop. *
NOTE F
uel may spray out when you
remove the fuel pump nozzle 
Only Nll t
he fuel tank until the pump noz-
zle switches oM. Requirements:
= The v

ehicle is unlocked.
= Plug-in hybrid with petrol engine: the fuel tank
was depressurised before refuelling
(  page 199). This function is country-
dependent.
Observe the notes on operating Ouids and fuel. 198
Driving and parking

The recommended octane number for your vehi-
cle can be f
ound on the information label in the
fuel Nller Oap. 1
Fuel Nller Oap
2 Bracket for fuel Nller cap
3 Tyre pressure table
4 Fuel type
5 QR code for rescue card %
Plug-in hybrid with petrol engine: t he fuel Nller
Oap opens automatically aser the fuel tank
has been depressurised ( page 199). 
Press on the back area of fuel Nller Oap 1. 
Turn the fuel Nller cap anti-cloc
kwise and
remove it. 
Insert fuel Nller cap fr
om above into bracket
2. 
Completely insert the pump nozzle into the
t
ank Nller neck, hook in place and refuel. 
Only Nll t
he fuel tank until the pump nozzle
switches oM.
% Vehicles with a diesel engine: t
he tank Nller
neck is designed for refuelling at diesel Nlling
pumps.
% Vehicles with a diesel engine: when t
he fuel
tank is completely empty, top up with at least
5 litres of diesel.
% Vehicles with a diesel engine: use a Nller nec
k
with a large diameter for vehicles with a diesel
engine when topping up fuel from a fuel can.
Otherwise, the Nller neck cannot slide into the
tank. 
Replace the cap on the Nller nec
k and turn
clockwise until it engages audibly. 
Close fuel Nller Oap 1. Depressurising the fuel tank (plug-in hybrid with
pe
trol engine) Driving and parking
199


Pull switch 1 once br ieOy.
Indicator lamp 2 will Oash and the Please
wait Depressurising tank message will appear
on the instrument display.
When the fuel tank is depressurised, indicator
lamp 2 will light up continuously.
The Tank is depressurised Ready for refuel-
ling message will appear on the instrument
display and the fuel Nller Oap will open auto-
matically.
% Depressurising the fuel tank may take several
minut

es.
The fuel tank can be depressurised only if the
conditions descr
ibed above are fulNlled. Other-
wise, drive the vehicle at least 0.5 km and repeat
the process.
% In the following situations, there is a malfunc-
tion:
= Indicat

or lamp 2 Oashes initially and then
goes out.
= The yellow engine diagnostics warning
lamp

%
Ensure the connection between the r eNll con-
tainer and vehicle Nller neck does not drip.
Topping up AdBlue n
* NOTE Engine damag
e due to AdBluen
being in the fuel 
AdBlue n
mus
t not be used to Nll the fuel
tank. 
Only use AdBlue n
t
o Nll the AdBlue n
tank. 
Do not o
verNll the AdBluen
tank. *
NOTE Cont
amination of the vehicle inte-
rior due to AdBlue n
leakage 
Aser t
opping up, carefully close the
AdBlue n
reNll container. 
Avoid carrying AdBlue n
r
eNll containers
permanently in the vehicle. Requirements:
= The v

ehicle is unlocked. The following messages appear in order in the
Ins

trument Display when the AdBlue n
tank
requires topping up:
= Refill AdBlue See Owner

Opening the AdBlue
n
Nller cap 
Press on the back area of fuel Nller Oap 1. 
Turn AdBlue n
Nller cap 2 anti-cloc kwise and
remove it.
% You can also store the AdBlue n
Nller cap in
t
he fuel Nller cap holder in the fuel Nller Oap
hinge arm. Topping up AdBlue
n
Mer
cedes-Benz recommends topping up AdBlue n
at a Nlling pump. If no AdBlue n
Nlling pump is
available, you can also top up AdBlue n
using a
canister. 
Screw on the fastener of AdBlue n
r
eNll canis-
ter 4. 
Screw the disposable hose 3 ont
o the open-
ing of AdBlue n
reNll canister 4 until hand-
tight. 
Screw the disposable hose 3 ont
o the Nller
neck of the vehicle until hand-tight. 
Lis up and tip A
dBluen
reNll canister 4.
The Nlling process stops when the AdBlue n
tank is completely full.
AdBlue n
reNll canister 4 can be removed
when it has been only partially emptied. 
Unscrew and close the disposable hose 3
and A
dBluen
reNll canister 4 in reverse
order. 
Replace AdBlue n
Nller cap 2 and tur
n it
clockwise until it audibly engages. 
Close fuel Nller Oap 1. 
Switch on the vehicle for at least 60 seconds.
% If the vehicle could not be started as the
A

dBlue n
tank was empty, it can take up to
60 seconds for the reNll to be detected. 
Start the vehicle. 202
Driving and parking

%
Avoid storing AdBlue n
r eNll containers perma-
nently in the vehicle. Charging the high-voltage battery (plug-in
h
ybrid) Notes on charging the high-voltage battery
*
NOTE High-v
oltage battery damage due to
leaving the vehicle idle for lengthy periods
of time Lithium-ion batteries experience a natural self-
disc
harge.
Exhaustive discharging can therefore occur if
the vehicle is idle for several months. This can
damage the high-voltage battery. 
To avoid damage, please observe the fol-
lo

wing recommendations when handling
the high-voltage battery. *
NOTE A
ccelerated ageing of the high-volt-
age battery due to not observing the fol-
lowing recommendations As a result of its basic characteristics, the
s
torage capacity of and the amount of energy
available from the high-voltage battery decrea-
ses over the course of its life. Due to this, both
the maximum electrical range that can be ach-
ieved by the vehicle and its maximum electri-
cal output can be impaired.
The following factors could accelerate the age-
ing of the high-voltage battery:
= a high level of charge, especially if the
vehicle is idle for a lengthy period of time
= frequent rapid charging with direct current
(mode 4)
= leaving the vehicle idle for lengthy periods
at high ambient temperatures 
To avoid accelerated ageing, please
obser
ve the following recommendations
when handling the high-voltage battery. Recommendations when handling the high-voltage
batt
ery:
= Only charge the high-voltage battery with
direct current (mode 4) if necessary.
= If leaving the vehicle idle for lengthy periods,
park up the vehicle with a high-voltage battery
charge level between 25% and 30%. Do not
keep the high-voltage battery continuously
connected to power supply equipment.
= If leaving the vehicle idle for lengthy periods of
time avoid, if possible, high ambient tempera-
tures.
= Check the high-voltage battery's charge level
every six weeks (  page 220).
= Charge the high-voltage battery if the charge
level is below 15%.
= Do not disconnect the 12 V battery even if the
vehicle is les idle for a lengthy period. Other-
wise, the condition of the vehicle's high-volt-
age battery cannot be monitored. Driving and parking
203

Depending on the equipment and national ver-
sion, y our vehicle is equipped with one of the fol-
lowing vehicle sockets:
= Type 1 for charging with alternating current
(mode 2/3)
= Type Combo 1 for charging with alternating
current (mode 2/3) and charging with direct
current (mode 4)
= Type 2 for charging with alternating current
(mode 2/3)
= Type Combo 2 for charging with alternating
current (mode 2/3) and charging with direct
current (mode 4) Combo 1 vehicle socket Combo 2 vehicle socket
1
Type 1 or type 2 connection for charging with
alt

ernating current
2 Socket extension for charging with direct cur-
r
ent 204
Driving and parking

%
When using a CCS (Combined Charging Sys-
t em) charging cable to charge with direct cur-
rent at a combo vehicle socket, both vehicle
socket connections 1 and 2 are used for
charging.
Charging options for the high-voltage battery
(mode 2, 3 or 4): = Char

ging through recuperation while the vehi-
cle is in motion
= Charging with alternating current when sta-
tionary:
- at a mains socket (mode 2)
- at a wallbox or charging station (mode 3)
= Charging with direct current when stationary
(vehicles with combo vehicle sockets):
- at a rapid charging station (mode 4)
Depending on the country-speciNc vehicle equip-
ment and your vehicle's charging cable, single
phase AC charging is also possible.
Observe the diMerent grid requirements of your
current location when charging. Only use charging
cables which conform to the grid requirements. Consult a
q
ualiNed electrician or your local grid
operator if you have any questions.
It is recommended that you charge the high-volt-
age battery at a wallbox or charging station due to
the improved charging performance and better
charging ePciency oMered.
Stowing the charging cable
Always stow the vehicle charging cable in the
charging cable bag provided and secure it in the
boot or load compartment of your vehicle.
Otherwise, the charging cable is not suPciently
secured.
System limits
The power output of the high-voltage battery may
be impaired by the following:
= High or low outside temperatures
= Electrical auxiliary consumers in the vehicle
being switched on, e.g. operating the air con-
ditioning system
= Extended periods without charging The charging time of the high-voltage battery may
be incr eased by the following:
= High or low outside temperatures
= Extended periods without charging
= The maximum available charge current of the
charging facility
= The charging current set (mode 2) in the multi-
media system ( page 307) Notes on charging the high-voltage battery at the
mains soc
ket (mode 2) &
DANGER Risk of f
atal injury from incor-
rectly installed component parts
Connecting the charging cable to a mains
soc
ket using incorrectly installed component
parts could cause a Nre or an electric shock,
for example. 
Only connect the charging cable to a
mains soc
ket that:
= Has been pr
operly installed and Driving and parking
205

=
Has been inspect ed by a qualiNed electri-
cian 
For safety reasons, only use the charging
cable supplied wit

h the vehicle or an
original Mercedes-Benz charging cable. 
Purchase these parts at a Mercedes-
Benz Ser

vice Centre and obtain advice
there.
Mercedes-Benz thoroughly tests these original
c
harging cables for their suitability for high-
voltage charging of your vehicle. 
Never use a damaged charging cable. 
Do not use:
= Ext
ension cables
= Extension reels
= Multiple sockets 
Never use socket adapters to connect
t

he charging cable to the mains socket.
The only exception being if the adapter
has been tested and approved by the manufacturer for charging the high-volt-
ag

e battery of an electric vehicle. 
Observe the safety notes in the operat-
ing ins
tructions for the socket adapter. Only the following charging cables may be used:
= The c

harging cable supplied with the vehicle.
= A charging cable that has been approved for
the vehicle.
The charging process can vary depending on the
power supply equipment. The charging times
when charging the high-voltage battery at the
mains socket are considerably longer than when
charging at a wallbox or charging station.
When doing so, always observe the local informa-
tion.
Do not leave the charging cable controls hanging
loose from a mains socket.
Do not lis the controls by the following compo-
nent parts:
= the charging cable connector
= the mains plug When charging, protect the charging cable control
element fr
om excessive heat such as direct sun-
light. Otherwise, the charging process may be
cancelled. Notes on charging the high-voltage battery at a
w

allbox or charging station (mode 3) &
DANGER Risk of f
atal injury from incor-
rectly installed component parts
Connecting the charging cable to a wallbox
using incor
rectly installed component parts
could cause a Nre or an electric shock, for
example. 
Only connect the charging cable to a
w
allbox that:
= Has been pr
operly installed and
= Has been inspected by a qualiNed electri-
cian 
For safety reasons, only use charging
cables t

hat have been tested and
approved by the manufacturer for charg- 206
Driving and parking

ing the high-voltage battery in an electric
v ehicle. 
Never use damaged charging cables. 
Do not extend the charging cable. 
Do not use adapters. 
Observe the safety notes in the operat-
ing ins
tructions for the wallbox. If charging at a wallbox without pre-installed
cable, use t

he optionally available charging cable
for wallbox and charging station (mode 3). The
charging cable is stowed in a bag in the boot/
luggage compartment.
Only use charging cables that have been tested
and approved by the manufacturer for charging
the high-voltage battery in an electric vehicle. &
DANGER Risk of f
atal injuries due to dam-
aged components
Connecting the charging cable to a charging
s
tation using a damaged component part
could cause a Nre or an electric shock, for
example. 
For charging stations with a preinstalled
c

harging cable:
= Perform a visual check of the charg-
ing station for obvious faults, such as
massive damage to the housing or
charging cable. 
For charging stations without a preinstal-
led c

harging cable:
= For safety reasons, only use charging
cables that have been tested and
approved by the manufacturer for
charging the high-voltage battery in
an electric vehicle.
= Never use damaged charging cables.
= Do not extend the charging cable.
= Do not use adapters. 
Make sure to observe the safety informa-
tion on t

he charging station. Most charging stations must be activated before
t

he charging process, e.g. using an RFID card.
Observe the on-site operator's instructions for the
charging station. The amount of energy dispensed for the charging
pr

ocess, shown by the charging station, may be
higher than the amount of energy actually absor-
bed by the high-voltage battery. This is the result
of diMerent levels of charging losses and is descri-
bed as recharge ePciency. Charging losses occur,
for example, due to heat that builds up when the
vehicle is charging or from auxiliary consumers
that are switched on. Further information on
recharge ePciency can be obtained at a qualiNed
specialist workshop. Notes on charging the high-voltage battery at a
r

apid charging station (mode 4) &
DANGER Risk of f
atal injuries due to dam-
aged components
Connecting the charging cable to a charging
s
tation using a damaged component part
could cause a Nre or an electric shock, for
example. 
For charging stations with a preinstalled
c

harging cable: Driving and parking
207