2022 MERCEDES-BENZ A-CLASS SALOON Owners Manual

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. %
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. 190
Driving and parking

*
NOTE Accelerated 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 208).
= 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. 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) Driving and parking
191

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
% 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 ar
e 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 qualiNed electrician or your local grid
operator if you have any questions. 192
Driving and parking

It is recommended that you charge the high-volt-
ag e 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 increased by the following: = High or low outside temperatures
= Extended periods without charging =
The maximum a vailable charge current of the
charging facility
= The charging current set (mode 2) in the multi-
media system ( page 295) 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
= Has been inspected 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-
age 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. Driving and parking
193

=
A c harging 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 from 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-
ing the high-voltage battery in an electric
vehicle. 
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. 194
Driving and parking


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
process, 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
t
hat 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:
= 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
c

harging 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. &
DANGER Risk of f
atal injuries when carry-
ing out maintenance work during the
charging process
During the charging process, the high-voltage
on-boar
d electrical system is under high volt-
age. 
Do not perform any maintenance work
dur

ing the charging process. 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. Driving and parking
195

The charging cable for the vehicle must not be
long er than 30 m due to the legal requirements in
some countries. This is to prevent the interfer-
ence of signals being received by radio communi-
cation devices in the vehicle or in close proximity
to the charging station. Be aware that parts of the
charging cable may be routed underground. If in
doubt, ask the charging station operator if this is
the case before charging the high-voltage battery.
The amount of energy dispensed for the charging
process, 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. Setting the maximum permissible charging cur-
r
ent for charging at a mains socket *
NOTE Ov
erloading the mains socket due
to excessive charging current If the charging current is too high, the fuse
could be tr
ipped or the external mains supply
could overheat. 
Make sure that the external mains supply
has been designed t

o handle the set
charging current. 
If necessary, reduce the set charging
cur
rent or use a diMerent mains socket. 
For safety reasons, only use the charging
cable supplied wit

h the vehicle or an
original Mercedes-Benz charging cable.
Mercedes-Benz thoroughly tests these
original charging cables for their suitabil-
ity for high-voltage charging of your vehi-
cle. Purchase these parts at a Mercedes-
Benz Service Centre and obtain advice
there. 
Check the setting of the maximum
c
harge current using the charging capa-
city shown in the Instrument Display. Before charging at a mains socket, have the maxi-
mum per

missible charging current for the relevant
mains socket or the building inspected by a quali-
Ned electrician. The charging cable supplied is set
to a country-speciNc maximum charging current
value. When charging abroad, the maximum value
may exceed the permitted value for that country.
When abroad, observe the country-speciNc laws
when charging. If you have questions concerning
setting the charging current or if there is a mal-
function, please contact a qualiNed specialist
workshop. 
Set the maximum permissible charging cur-
r

ent in the multimedia system menu
( page 295).
If the exact value of the maximum permissible
c
harging current cannot be set, select the next
smaller adjustable value. 196
Driving and parking

%
If the vehicle requires more time than usual to
c
harge the high-voltage battery, check the
maximum charging current settings in the
multimedia system menu. Overview of the charging cable control panel
The charging cable control panel shows the cur-
r

ent status of the charging process. 1
Supply voltage indicator
2 Charging process indicator
3 Temperature monitor indicator
4 Safety system indicator Supply voltage indicator
1 Display
Meaning
Lights up white The supply voltage is connect
ed. Charging process indicator
2 Display
Meaning
Flashes green The high-voltage bat- t
ery is charging. Temperature control indicator
3 Display
Meaning
Lights up red The green LED Oashes simult
aneously: over-
temperature !