MERCEDES-BENZ A-CLASS SALOON 2021 Owners Manual

#
Screw disposable hose 3onto the opening
of Ad Blue ®
re/ll canis ter4 until hand-tight. #
Screw disposable hose 3onto the /ller neck
of theve hicle until hand-tight. #
LiT up and tip AdBlue ®
re/ll canis ter4.
The /lling process stops when theAd Blue ®
ta nk is comple tely full.
Ad Blue ®
re/ll canis ter4 can be remo ved
when it has been only partial lyem ptied. #
Unscr ewand close disposable hose 3and
Ad Blue ®
re/ll canis ter4 inreve rse order. #
Replace AdBlue ®
/ller cap 2and turn it
clo ckwise until it audibly engages. #
Close fuel /ller 0ap 1.#
Switch on theve hicle for at least 60 seconds.
% Ifth eve hicle could not be star ted as the
Ad Blue ®
tank was em pty, it can take up to
60 seconds forth ere /ll tobe de tected. #
Start theve hicle.
% Avoid storing AdBlue ®
re/ll con tainers perma-
nently in theve hicle. Char
Char
ging t
ging t he high-v
he high-v olt
oltag
age batt
e batt er
ery (plug-in
y (plug-in
h
h ybr
ybr id)
id) N
No
ot
tes on c
es on c har
harging t
ging t he high-v
he high-v olt
oltag
age batt
e batt ery
ery *
N
NOOTE
TE High-voltage battery damage due to
leaving theve hicle idle for lengt hyperiods
of time Lithium-ion batteries
experience a natural self-
dischar ge.
Exhausti vedischarging can therefore occur if
th eve hicle is idle for se veral months. This can
damage the high-voltage batter y. #
Toavo id damage, please obser vethefo l-
lowing recommendations when handling
th e high-voltage batter y. *
N
NO
OTE
TE Accelerated ageing of the high-volt-
age battery As a
result of its basic characteristics, the
storage capacity of and the amount of energy
av ailable from the high-voltage battery
decrease over the course of its life. Due to th
is, bo th the maximum electrical range that
can be achie vedby theve hicle and its maxi-
mum elect rical output can be impaired.
The following factors could accelerate the age-
ing of the high-voltage batter y:
R a high le vel of charge , especially if the
ve hicle is idle for a lengt hyperiod of time
R frequent rapid charging with direct cur rent
(mode 4)
R leaving theve hicle idle for lengt hyperiods
at high ambient temp eratures #
Toavo id accelerated ageing, please
obser vethefo llowing recommendations
when handling the high-voltage batter y. Re
commendations when handling the high-voltage
batter y:
R Only charge the high-voltage battery with
direct cur rent (mode 4) if necessar y.
R If leaving theve hicle idle for lengt hyperiods,
park up theve hicle with a high- voltage battery
ch arge leve l between 25% and 30%. Do not 188
188
Driving and parking

ke
ep the high-voltage battery continuously
connected topowe r supply equipment.
R If leaving theve hicle idle for lengt hyperiods of
time avoid, if possible, high ambient temp era-
tures.
R Check the high-voltage battery's charge level
ev ery six weeks (/ page 205).
R Char gethe high-voltage battery if thech arge
le ve l is below 15%.
R Do not disconnect the 12 V battery even if the
ve hicle is leT idle for a lengt hyperiod. Other-
wise, the condition of theve hicle's high- volt-
age battery cannot be monitored.
Depending on the equipment and national ver-
sion, your vehicle is equipped with one of thefo l-
lowing vehicle soc kets:
R Type 1 forch arging with alternating cur rent
(mode 2/3)
R Type Combo 1 forch arging with alternating
cur rent (mode 2/3) and charging with direct
cur rent (mode 4)
R Type 2 forch arging with alternating cur rent
(mode 2/3) R
Type Combo 2 forch arging with alternating
cur rent (mode 2/3) and charging with direct
cur rent (mode 4) Combo 1
vehicle soc ket Combo 2
vehicle soc ket
1 Type 1 or type 2 connection forch arging with
alternating cur rent
2 Socketex tension forch arging with direct cur-
re nt Driving and parking
189
189

%
When using a CCS (Combined Charging Sys-
te m) charging cable tocharge with direct cur-
re nt at a combo vehicle soc ket, bo thvehicle
soc ket connections 1and 2are used for
ch arging.
Charging options forth e high-voltage battery
(mode 2, 3 or 4):
R Charging through recuperation while theve hi-
cle is in motion
R Charging with alternating cur rent when sta-
tiona ry:
- at a mains soc ket (mode 2)
- at a wallbox or charging station (mode 3)
R Charging with direct cur rent when stationary
(vehicles with combo vehicle soc kets):
- at a fast charging station (mode 4)
Depending on the count ry-speci/c vehicle equip-
ment and your vehicle's charging cable, single
phase ACcharging is also possible.
Obser vethe di.erent grid requ irements of your
cur rent location when charging. Only use charging
cables which conform tothegr id requiremen ts.Consult a
quali/ed elect rician or your local grid
operator if you ha veany questions.
It is recommended that youch arge the high-volt-
age battery at a wallbox or charging station due to
th e impr ovedch arging per form ance and better
ch arging e1ciency o.ered.
S
S t
to
o wing t
wing t he c
he char
harging cable
ging cable
Alw ays st owtheve hicle charging cable in the
ch arging cable bag pr ovided and secure it in the
boot or load compartment of your vehicle.
Otherwise, thech arging cable is not su1ciently
secured.
Syst Syst em limits
em limits
The po wer output of the high-voltage battery may
be impaired bythefo llowing:
R High or low outside temp eratures
R Electrical auxiliary consumers in theve hicle
being switched on, e.g. operating the air con-
ditioning system
R Extended periods without charging The
charging time of the high-voltage battery may
be increased bythefo llowing:
R High or low outside tempe ratures
R Extended periods without charging
R The maximum available charge cur rent of the
ch arging facility
R The charging cur rent set (mode 2) in the multi-
media system (/ page 292) N
No
ot
tes on c
es on c har
harging t
ging t he high-v
he high-v olt
oltag
age batt
e batt er
ery at t
y at t he
he
mains soc ke
mains soc ket (mode 2)
t (mode 2) &
D
DAN
AN GER
GER Risk of fatal injury from incor-
re ctly ins talled component parts
Connecting thech arging cable toa mains
soc ket using incor rectly ins talled component
parts could cause a /re or an electric shoc k,
fo rex ample. #
Only connect thech arging cable to a
mains soc ketth at:
R Has been proper lyinstalled and 190
190
Driving and parking

R
Has been inspec tedby aqu ali/ed elect ri-
cian #
For saf etyre asons, only use thech arging
cable supplied with theve hicle or an
original Mercedes-Benz charging cable. #
Purchase these parts at a Mercedes-
Benz Service Centre and obtain advice
th ere.
Mercedes-Benz thoroughly tests these original
ch arging cables forth eir suitability for high-
vo ltage charging of your vehicle. #
Never use a damaged charging cable. #
Do not use:
R Extension cables
R Extension reels
R Multiple soc kets #
Never use soc ket ada pters toconnect
th ech arging cable tothe mains soc ket.
The only exception being if the adap ter
has been tested and appro vedby the manufacturer
forch arging the high-volt-
age battery of an electric vehicle. #
Obser vethe saf ety no tes in the operat-
ing inst ructions forth e soc ket ada pter. Only
thefo llowing charging cables may be used:
R The charging cable supplied with theve hicle.
R Ach arging cable that has been appr ovedfor
th eve hicle.
The charging process can vary depending on the
po we r supply equipment.
Shor terch arging times can be achie ved in thefo l-
lowing ways:
R Charging at a wallbox.
R Charging at a charging station.
When doing so, alw ays obser vethe local informa-
tion.
Do not lea vethech arging cable cont rols hanging
loose from a mains soc ket. Do not liT
the controls bythefo llowing compo-
nent parts:
R The charging cable connector.
R The mains plug.
When charging, pr otect thech arging cable cont rol
element from excessive heat such as direct sun-
light. Otherwise, thech arging process may be
cancelled. N No
ot
tes on c
es on c har
harging t
ging t he high-v
he high-v olt
oltag
age batt
e batt er
ery at a
y at a
w
w allbo
allbo x or c
x or c har
har ging st
ging st ation (mode 3)
ation (mode 3) &
D
DAN
AN GER
GER Risk of fatal injury from incor-
re ctly ins talled component parts
Connecting thech arging cable toawa llbox
using incor rectly ins talled component parts
could cause a /re or an electric shoc k,for
ex ample. #
Only connect thech arging cable to a
wa llbox that:
R Has been proper lyinstalled and Driving and parking
191
191

R
Has been inspec tedby aqu ali/ed elect ri-
cian #
For saf etyre asons, only use charging
cables that ha vebeen tested and
appro vedby the manufacturer forch arg-
ing the high-voltage battery in an electric
ve hicle. #
Never use damaged charging cables. #
Do not extend thech arging cable. #
Do not use adap ters. #
Obser vethe saf ety no tes in the operat-
ing inst ructions forth ewa llbox. If
ch arging at a wallbox without pre-ins talled
cable, use the optionally available charging cable
fo rwa llbox and charging station (mode 3). The
ch arging cable is st owed in a bag in the boot/
luggage compartment.
Only use charging cables that ha vebeen tested
and appro vedby the manufacturer forch arging
th e high-voltage battery in an electric vehicle. &
D DAN
AN GER
GER Risk of fatal injuries due todam-
aged components
Connecting thech arging cable toach arging
station using a damaged component part
could cause a /re or an elect ric shoc k,for
ex ample. #
Forch arging stations with a preinstalled
ch arging cable:
R Perform a visual check of thech arg-
ing station for obvious faults, such as
massive damage tothe housing or
ch arging cable. #
Forch arging stations without a preinstal-
led charging cable:
R For saf etyre asons, only use charging
cables that ha vebeen tested and
appro vedby the manufacturer for
ch arging the high-voltage battery in
an electric vehicle.
R Never use damaged charging cables.
R Do not extend thech arging cable.
R Do not use adap ters. #
Make sure toobser vethe saf ety in form a-
tion on thech arging station. Most
charging stations must be activated before
th ech arging process, e.g. using an RFID card.
Obser vethe on-site operator's inst ructions forthe
ch arging station.
The amount of ene rgy dispensed forth ech arging
process, shown bythech arging station, may be
higher than the amount of energy actually absor-
bed bythe high-voltage batter y.This is there sult
of di.erent le vels of charging losses and is descri-
bed as rech arge e1ciency. Charging losses occur,
fo rex ample, due toheat that builds up when
ch arging or from auxiliary consumers that are
switched on. Further information on rech arge e1-
ciency can be obtained at a quali/ed specialist
wo rkshop. 192
192
Driving and parking

N
N
o
ot
tes on c
es on c har
harging t
ging t he high-v
he high-v olt
olt ag
age batt
e batt er
ery at a
y at a
f
f as
ast c t c har
har ging st
ging st ation (mode 4)
ation (mode 4) &
D
D AN
AN GER
GER Risk of fatal injuries due todam-
aged components
Connecting thech arging cable toach arging
station using a damaged component part
could cause a /re or an elect ric shoc k,for
ex ample. #
Forch arging stations with a preinstalled
ch arging cable:
R Perform a visual check of thech arg-
ing station for obvious faults, such as
massive damage tothe housing or
ch arging cable. #
Forch arging stations without a preinstal-
led charging cable:
R For saf etyre asons, only use charging
cables that ha vebeen tested and
appro vedby the manufacturer for
ch arging the high-voltage battery in
an electric vehicle.
R Never use damaged charging cables.
R Do not extend thech arging cable. R
Do not use adap ters. #
Make sure toobser vethe saf ety in form a-
tion on thech arging station. Most
charging stations must be activated before
th ech arging process, e.g. using an RFID card.
Obser vethe on-site operator's inst ructions forthe
ch arging station.
The charging cable forth eve hicle must not be
lon gerth an 30 m due tothe legal requ irements in
some countries. This is toprev ent the inter fer-
ence of signals being received byradio communi-
cation devices in theve hicle or in close pr oximity
to thech arging station. Be awarethat parts of the
ch arging cable may be routed under ground. If in
doubt, ask thech arging station operator if this is
th e case before charging the high-voltage batter y.
The amount of energy dispensed forth ech arging
process, shown bythech arging station, may be
higher than the amount of energy actually absor-
bed bythe high-voltage batter y.This is there sult
of di.erent le vels of charging losses and is descri-
bed as rech arge e1ciency. Charging losses occur,
fo rex ample, due toheat that builds up when ch
arging or from auxiliary consumers that are
switched on. Further information on rech arge e1-
ciency can be obtained at a quali/ed specialist
wo rkshop. Se
Se
tting t
tting t he maximum per
he maximum per missible c
missible char
harging cur-
ging cur-
r
r ent f
ent f or c
or char
harging at a mains soc ket
ging at a mains soc ket *
N
NO
OTE
TE Overloading the mains soc ket due
to excessive charging cur rent If
th ech arging cur rent is too high, the fuse
could be tripped or theex tern al mains supply
could overheat. #
Make sure that theex tern al mains supply
has been designed tohandle the set
ch arging cur rent. #
If necessar y,reduce the set charging
cur rent or use a di.erent mains soc ket. #
For saf etyre asons, only use thech arging
cable supplied with theve hicle or an
original Mercedes-Benz charging cable.
Mercedes-Benz thoroughly tests these
original charging cables forth eir suitabil- Driving and parking
193
193

ity
for high-voltage charging of your vehi-
cle. Pur chase these parts at a Mercedes-
Benz Service Centre and obtain advice
th ere. #
Check the setting of the maximum
ch arge cur rent using thech arging capa-
city shown in the Instrument Displa y.Before
charging at a mains soc ket, ha vethe maxi-
mum permissible charging cur rent forth ere leva nt
mains soc ket or the building inspected byaqu ali-
/ed elect rician. The charging cable supplied is set
to a countr y-speci/c maximum charging cur rent
va lue. When charging abroad, the maximum value
may exceed the permitted value forth at countr y.
When abroad, obser vethe count ry-speci/c la ws
when charging. If you ha vequestions concerning
setting thech arging cur rent or if there is a mal-
function, please contact a quali/ed specialist
wo rkshop. #
Set the maximum permissible charging cur-
re nt in the multimedia system menu
(/ page 292). If
th eex act value of the maximum permissible
ch arging cur rent cannot be set, select the next
smaller adjustable value.
% Ifth eve hicle requ ires more time than usual to
ch arge the high-voltage batter y,ch eck the
maximum charging cur rent settings in the
multimedia system menu. Ov Ov
er
ervie
vie w of t
w of t he c
he char
harging cable contr
ging cable contr ol panel
ol panel The
charging cable cont rol panel sho ws the cur-
re nt status of thech arging process. 1
Supply voltage indicator
2 Charging process indicator 3
Temp erature monitor indicator
4 Safety sy stem indicator
Suppl
Suppl y v
y volt
oltag
age indicat
e indicat or
or1
1 Display
Display
Meaning
Meaning
Lights up whit eThe supplyvoltage is
connected. Char
Char
ging pr
ging pr ocess indicat
ocess indicat or
or2
2 Display Display
Meaning Meaning
Flashes green The high-voltage bat-
tery isch arging. 194
194
Driving and parking

T
T
em
em per
per atur
atur e contr
e contr ol indicat
ol indicat or
or3
3 Display
Display
Meaning
Meaning
Lights up redT hegreen LED 0ashes
simultaneousl y:ove r-
te mp erature – the
ch arging per form ance
is reduced.
The green LED does
not 0ash: overtemper-
ature – thech arging
process is stopped.
Flashes redO vertemperature at
th e mains plug – the
ch arging process is
stopped. Safe
Safe
ty syst
ty syst em indicat
em indicat or
or4
4 Displ
ay
Display Meaning
Meaning
Flashes redC harging cable mal-
function – cann ot
car ryout thech arging
process, reset the
ch arging cable operat-
ing unit.
Lights up redW hite LED is o.:
po we r supply malfunc-
tion – cannot car ry
out thech arging proc-
ess, replace the mains
soc ket.
White LED is on: vehi-
cle malfunction – can-
not car ryout the
ch arging process,
re set thech arging
cable operating unit. When all
four displa yslight up, thech arging cable
operating unit per form s a self-test. If
te mp erature monitor 3indicates a malfunc-
tion, it may help toprotect thech arging cable
from direct sunlight.
T T o r
o r ese
ese t t
t the c
he c har
harging cable oper
ging cable oper ating unit:
ating unit:if
saf ety sy stem 4indicates a charging cable mal-
function or a vehicle malfunction, /rst reset the
ch arging cable operating unit. Todo this, discon-
nect thech arging cable from theve hicle and from
th e mains soc ket and waitfor appr oximately /ve
seconds. If the malfunction persists aTer the
ch arging cable is reconnected, charging at the
mains soc ket is not possible. The charging cable
must be replaced or theve hicle plug must be
ch ecked at a quali/ed specialist workshop,
depending on the indicator. F
F
unctions of t
unctions of t he indicat
he indicator lam
or lamps on t
ps on t he v
he vehicle
ehicle
soc ket
soc ket %
Depending on the national version, your vehi-
cle is equipped with one of thefo llowing vehi-
cle soc kets.
The soc ket 0ap is centrally loc ked and unloc ked
to get her with theve hicle. Driving and parking
195
195

Combo 1
vehicle soc ket
1 Socket lamp
2 Charging process indicator lamp
3 Locking status indicator lamp Combo 2
vehicle soc ket
1 Socket lamp
2 Charging process indicator lamp
3 Locking status indicator lamp
Soc ket lamp 10ashes or lights up as with indi-
cator lamps 2and 3. Ov
Ov
er
ervie
vie w of t
w of t he loc
he loc king st
king st atus
atus Loc
Loc
king st
king st a-
a-
tus
tus 3
3 Display
Display
Meaning
Meaning
% Lights up
white Ve
hicle
soc ket
unloc ked,
insert or
re mo vecharg-
ing cable
% Flashes whiteMalfunction
during locking
or unlocking Ov Ov
er
ervie
vie w of t
w of t he c
he char
harging pr
ging pr ocess st
ocess st atus
atus S
S
t
tatus of t
atus of t he
he
c
c har
har ging
ging
pr
pr ocess
ocess 2
2 Displ
ay
Display Meaning
Meaning
# Flashes
orangeConnection is
being estab-
lished
# Flashesgreen Active energy
0ow 196 196
Driving and parking

S
S
t
tatus of t
atus of t he
he
c
c har
har ging
ging
pr
pr ocess
ocess 2
2 Displ
ay
Display Meaning
Meaning
# Lights up
orangeInter
ruption in
ch arging
# Lights up
green Charging
process com-
ple
ted
# Flashesred
(for appr ox.
90 s) Ve
hicle mal-
function;
ch arging is
not possible S S
t
tar
ar ting t
ting t he alt
he alt er
ernating curr
nating curr ent c
ent char
harging pr
ging pr ocess
ocess
(mode 2/3)
(mode 2/3) &
D
DAN
AN GER
GER Risk of death when charging at a
damaged soc ket
The charging process uses high voltage. If
th ech arging cable, theve hicle soc ket or the
mains soc ket are damaged, you could receive
an elect ric shoc k. #
Only use an undamaged charging cable. #
Avoid mechanical damage such as crush-
ing, abrading or driving overth e cable. #
Have a damaged vehicle soc ketre placed
at a quali/ed specialist workshop as
soon as possible. #
Never connect thech arging cable to a
damaged vehicle soc ket. *
N
NOOTE
TE Damage due toove rheating of
ch arging cable and charging cable con-
nector During
thech arging process, thech arging
cable and charging cable connector can heat
up within their permissible limit values. The permissible limit
values are in0uenced by
th efo llowing factors:
R the po wer supply system and thech arging
cable are not damaged
R the inst ructions for handling thech arging
cable and the control element on the
ch arging cable ha vebeen obser ved #
Ifth ech arging cable or charging cable
connector becomes too hot, ha vethe
po we r supply system checked. *
N NOOTE TE Damaged or dirty vehicle soc ket
when the soc ket 0ap is open #
Alwayske ep the soc ket co ver and the
soc ket 0ap closed when there is no
ch arging cable connected. This pr otects
th eve hicle soc ket from dirt and damage. #
Make sure that the soc ket co ver is
closed proper lybefore closing the soc ket
0ap. This can otherwise result in damage
which may pr event the soc ket 0ap from
being opened again. Driving and parking
197
197