display MERCEDES-BENZ A-CLASS SALOON 2021 Owners Manual

Chec
Chec
king t
king t he coolant lev
he coolant lev el
el &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. &
W
WARNING
ARNING Risk of scalding from hot cool-
ant
If yo u open the cap, you could be scalded. #
Let the mo tor cool down before opening
th e cap. #
When opening the cap, wear pr otective
glo ves and saf ety glasses. #
Open the cap slo wlytorelease pressure. #
Park theve hicle on a le vel sur face. #
Check the coolant temp erature display in the
inst rument cluster.
The coolant temp erature must be below 70°C. #
Slowly turn cap 1anti-clockwise torelease
ove rpressure. #
Continue turning cap 1anti-clockwise and
re mo veit. The coolant le
vel is cor rect in thefo llowing cases:
R Ifth e engine is cold, the coolant is up to
mar ker bar 2.
R Ifth e engine is warm,th e coolant is up to
1.5 cm overth e mar ker bar 2. #
If necessar y,top up with coolant that has
been appr ovedfo r Mercedes-Benz.
% Further information on coolant (/ page 393) T
T
opping up t
opping up t he windscr
he windscreen w
een washer syst
asher syst em
em &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. 330
330
Maintenance and care

Seat belts
Seat belts
R Clean wi thluk ewa rmand soapy water.
R Do not use chemical cleaning agents.
R Do not dry byheating them toove r 80°C or
ex posing them todirect sunlight.
Display
Display
R Switch o. the display and let it cool down.
R Clean the sur face carefully with a micro/bre
clo thand a suitable displ aycare product (TFT-
LC D).
R Do not use any other agents.
Head-up displ ay
Head-up display
R Clean with a soT, non-static, lint-free clo th.
R Do not use cleaning agents.
Plas
Plastic tr tic tr im
im
R Clean with a damp micro/bre clo th.
R For heavy soiling: Use a cleaner recommen-
ded for Mercedes-Benz.
R Do not attach stic kers, /lms or similar materi-
als. R
Do not allow cosmetics, insect repellent or
sun cream tocome in contact with the plastic
trim.
R
R eal w
eal w ood and tr
ood and tr im elements
im elements
R Clean with a micro/bre clo th.
R Blackpiano-lacquer look: Clean with a damp
clo thand soapy water.
R For heavy soiling: Use a cleaner recommen-
ded for Mercedes-Benz.
R Do not use sol vent-based cleaning agents, pol-
ishes or waxes.
R
R oof lining
oof lining
R Clean with a brush or dry shampoo.
Car
Car pet
pet
R Use a carpet and textile cleaning agent recom-
mended for Mercedes-Benz.
St
St eer
eer ing wheel made of g
ing wheel made of g enuine leat
enuine leather or DINA-
her or DINA-
MICA
MICA
* NO
NOTE
TEDamage caused bywrong cleaners #
Do not use sol vent-based cleaning
agents such as tarre mo ver or wheel cleaner; neither should
you use polishes
or wa xes. Otherwise you may damage
th e /nish. R
Clean with a damp clo thand 1% soapy water
solution and then wipe with a dry clo th.
R For heavy soiling: Use a cleaner recommen-
ded for Mercedes-Benz.
R Leather care: Use a leather care agent that
has been recommended for Mercedes-Benz.
R Do not allow the leather tobecome too damp.
R Do not use a micro/bre clo th.
% Leather is a natural product. It has natural
surface properties, such as di.erences in
st ru cture, mar kscaused bygrow thand injury
or subtle colour di.erences. These sur face
properties are characteristics of leather and
not material faults. What's more, leather is
subject toa natural ageing process during
which the sur face properties change.
Genuine leat
Genuine leat her seat cov
her seat cov ers ers
R Clean with a damp clo thand then wipe with a
dry clo th. 338
338
Maintenance and care

In
thefo llowing situations, only transporting the
ve hicle is permitted:
R the multifunction display is not working
or
R theá Towing not permitted See Owner's
Manual display message appears
Ex
Ex cep
cep tion:
tion: ifth eve hicle is located in a danger
zone, it can be reco vered from the danger zone
despite the display message or the display not
wo rking.
It must not be towe d fur ther than 50 m with bo th
axles on thegr ound. A towing speed of 10 km/h
must not be exceeded. Be yond these limits, only
transporting is permitted. T
T
o
o wing t
wing t he v
he vehicle wit
ehicle wit h bot
h both axles on t
h axles on t hegr
he ground
ound #
Obser vethe no tes on the permitted towing
me thods (/ page 354). #
Plug-in hybrid: obser vethe no tes on the per-
mitted towing me thods (/ page 355). #
Make sure that the battery is connected and
ch arge d. Obser
vethefo llowing points when the battery is
dischar ged:
R theve hicle cann otbe star ted
R the electric parking brake cannot be released
or applied
R V
V ehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
transmission cannot be shiTed toposition i
or j.
% V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: ifthe
transmission cannot be shiTed toposition i
or if the display does not show anything,
transport theve hicle (/ page 357). A towing
ve hicle with liTing equipment is requ ired for
ve hicle transpo rtation.
* NO
NOTE
TE Damage due to towing away at
ex cessively high speeds or over long dis-
ta nces The driv
etra in could be damaged when towing
at excessively high speeds or over long distan-
ces. #
Atowing speed of 50 km/h must not be
ex ceeded. #
Atowing dis tance of 50 km must not be
ex ceeded. &
W
WARNING
ARNING Risk of accident when towing a
ve hicle which is too heavy
If th eve hicle tobe tow- star ted or towe daway
is heavier than the permissible gross mass of
yo ur vehicle, thefo llowing situations can
occur:
R theto wing eye may become de tach ed.
R theve hicle/trailer combination may
swer veorove rturn. #
Before tow- starting or towing away,
ch eck if theve hicle tobe tow- star ted or
to we dawa yex ceeds the permissible
gr oss mass. If a
vehicle must be tow- star ted or towe dawa y,its
permissible gross mass must not exceed the per-
missible gross mass of theto wing vehicle. 356
356
Breakdown assis
tance

If one or more tyre sizes precede a tyre pressure,
th efo llowing tyre pressure information is only
va lid forth ose tyre sizes and their respecti veload
condition.
If th e preceding tyre sizes are complemented by
th e+ symbol, the tyre pressure information
fo llowing sho wsalternative tyre pressures. Fuel
consum ption may then increase slightl y.
The load conditions "pa rtially laden" and "fully
laden" are de/ned in theta ble for di.erent num-
bers of passengers and amounts of luggage. The
actual number of seats may di.er from this. T T
yr
yr e pr
e pr essur
essur e monit
e monit or
oring syst
ing syst em
em F
F
unction of t
unction of t he tyr
he tyre pr
e pressur
essur e monit
e monit or
oring syst
ing syst em
em
The system checks the tyre pressure and the tyre
te mp erature of the tyres /t tedtotheve hicle by
means of a tyre pressure sensor.
The tyre pressure and the tyre temp erature
appear in the on-board computer (/ page 366).
If th ere is a substantial pressure loss or if the tyre
te mp erature is excessive, you will be warned with
display messages (/ page 458) ortheh wa
rning lamp in the inst rument cluster
(/ page 482).
The tyre pressure monitoring system is only an
aid. It is the driver's responsibility toset the tyre
pressure tothere commended cold tyre pressure
suitable forth e operating situation.
In most cases, the tyre pressure monitoring sys-
te m will automatically update the new refere nce
va lues aTer you ha vechanged the tyre pressure.
Yo u can, ho wever, also update there fere nce val-
ues byrestarting the tyre pressure monitoring
system manually (/ page 367).
Syst
Syst em limits em limits
The system may be impaired or may not function
particular lyin thefo llowing situations:
R incor rect refere nce values were ta ught in
R sudden pressure loss caused byafo re ign
object penetrating the tyre, forex ample
R there is a malfunction caused byano ther radio
signal source Chec
Chec king t
king t he tyr
he tyr e pr
e pressur
essur e wit
e with t
h the tyr
he tyr e pr
e pressure
essure
monit
monit or
oring sy
ing sy st
stem
em
R
R eq
eq uir
uir ements:
ements:
R The vehicle is switched on.
On-board computer: 4 Service 5
Tyres
One of thefo llowing displa ysappears:
R Current tyre pressure and tyre temp erature of
th e individual wheels: R
Tyre pressures will be displayed after a few
minutes of driving 366 366
Wheels and tyres

R
Tyre pressure monitor active :th ete ach-in
process of the system is not yetcomple te. The
tyre pressures are already being monitored. #
Compare the tyre pressure with there com-
mended tyre pressure forth e cur rent ope rat-
ing condition (/ page 365).Additionall y,
obser vethe no tes on cold tyres
(/ page 364).
% The values displa yed in the on-board com-
puter may deviate from those of the tyre pres-
sure gauge as they referto sea le vel.At high
ele vations, the tyre pressure values indicated
by a pressure gauge are higher than those
shown bythe on-board computer. In this case,
do not reduce the tyre pressure.
R
R est
est ar
arting t
ting t he tyr
he tyr e pr
e pressur
essur e monit
e monit or
oring syst
ing syst em
em
R
R eq
eq uir
uir ements:
ements:
R The recommended tyre pressure is cor rectly
set forth ere specti veoperating status on all of
th e wheels (/ page 364).
Re start the tyre pressure monitoring system in the
fo llowing situations:
R The tyre pressure has changed. R
The wheels or tyres ha vebeen changed or
ne wly /tted.
On-board computer: 4 Service 5
Tyres #
Swipe down wards on Touch Control on the
leT-hand side of the steering wheel.
The Use current pressures as new reference
values? message is shown in the Instrument
Displa y. #
Torestart, press Touch Control on the leT-
hand side of the steering wheel.
The Tyre press. monitor restarted message is
shown in the Instrument Displa y.
Cur rent wa rning message s are deleted and
th eye llow h warning lamp goes out.
ATer you ha vebeen driving for a few minutes,
th e system checks whe ther the cur rent tyre
pressures are within the speci/ed range. The
cur rent tyre pressures are then accep ted as
re fere nce values and monitored.
Be sure toalso pay attention tothefo llowing rela-
te dto pic:
R Notes on tyre pressure (/ page 364) T
T
yr
yr e pr
e pr essur
essur e loss w
e loss w ar
arning syst
ning syst em
em F
F
unction of t
unction of t he tyr
he tyre pr
e pressur
essur e loss w
e loss w ar
arning syst
ning syst em
em
The tyre pressure loss warning system warnsthe
driver bymeans of display messages when there
is a se vere tyre pressure loss.
Syst
Syst em limits
em limits
The system may be impaired or may not function
particula rly in thefo llowing situations:
R incor rect refere nce values were ta ught in
R sudden pressure loss caused byafo re ign
object penetrating the tyre, forex ample
R aneven pressure loss on more than one tyre
occurs
The system has a restric ted or dela yed function
particular lyin thefo llowing situations:
R poor ground conditions, e.g. snow or grav el
R driving with snow chains
R when adopting a very sporty driving st yle with
high cornering speeds or sudden acceleration
R driving with a very heavy or lar getrailer
R driving with a high load Wheels and tyres
367
367

shop. The new wheel must ha
vethe cor-
re ct dimensions. %
The emer gency spa rewheel is secured in the
emer gency spa rewheel bag in the boot.
Obser vethefo llowing no tes on removing an emer-
ge ncy spa rewheel:
R Before st owing the emer gency spa rewheel,
make sure there is no air leT in the tyre.
If necessar y,allow the air toescape.
R T
T o r
o r elease air fr
elease air fr om t
om the tyr
he tyr e:
e:remo vetheva lve
cap of the tyre.
R Press down the me tal insert in theva lve using
a pointed object, e.g. a pen.
R Screw theva lve cap onto theva lve.
Obser vethefo llowing no tes on /tting an emer-
ge ncy spa rewheel:
R The maximum permissible speed with an
emer gency spa rewheel /tted is 80 km/h.
R Do not /t the emer gency spa rewheel with
snow chains. R
Replace the emer gency spa rewheel aTer six
ye ars at the latest, rega rdless of wear.
R Check the tyre pressure of the emer gency
spa rewheel /tted. Cor rect the pressure as
necessar y.
% The speci/ed tyre pressure is stated on the
label of the emer gency spa rewheel.
% V
V ehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e loss w
e loss w ar
arning
ning
syst
syst em:
em: if an emer gency spa rewheel is /tted,
th e tyre pressure loss warning system cannot
function reliabl y.Only restart the system
again when the emer gency spa rewheel has
been replaced with a new wheel.
V
V ehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: if an emer gency spa rewheel is /tted, the
tyre pressure monitoring system cannot func-
tion reliabl y.Fo r a few minutes aTer an emer-
ge ncy spa rewheel is /tted, the system may
still display the tyre pressure of there mo ved
wheel. Only restart the system again when the
emer gency spa rewheel has been replaced
with a new wheel. Be sure
toalso obser vethefo llowing fur ther rela-
te d subjects:
R Notes on tyre pressure (/ page 364)
R Tyre pressure table (/ page 365)
R Notes on /tting tyres (/ page 368)
R Fitting an emer gency spa rewheel
(/ page 373) In0ating In0ating
t
the emerg
he emerg ency spar
ency spar e wheel
e wheel *
N
NOOTE
TE Overheating due tothe tyre in0ation
compressor running too long #
Do not runth e tyre in0ation compressor
fo r longer than ten minutes without inter-
ru ption. R
R
eq
eq uir
uir ements:
ements:
Comply with the manufacturer's saf ety no tes on
th e stic ker of the emer gency spa rewheel and on
th e tyre in0ation compressor. #
Remo vethe stic ker with the label 80 km/h
from the tyre in0ation compressor housing Wheels and tyres
379
379

any ammonia
vapours that may be released. Only
/ll theAd Blue ®
tank in well-ventilated areas.
A
A dBlue
dBlue ®
®
/lling
/lling capacity and consump
capacity and consump tion
tion
Tot
Tot al capacity of A
al capacity of A dBlue
dBlue®
®
t
tank
ank Model
Tot
Mode lT otal capacity
al capacity
All model s2 3.8 litresA
A
dBlue
dBlue ®
®
consump
consump tion
tion
The average AdBlue ®
consu mption is between 1%
and 5% of fuel consum ption. Like fuel consump-
tion, AdBlue ®
consu mption is high lydependent
upon driving style and operating conditions. For
th is reason, your vehicle's actual consu mption /g-
ures under da y-to -day operating conditions may
di.er from the consum ption /gures calculate d.
The frequency at which you will ha veto to p up
Ad Blue ®
will also vary. Ha vetheAd Blue ®
supply
ch ecked at a quali/ed specialist workshop before
making jou rney s outside of Europe. Before a lon-
ge r st ayoutside of Europe, consult a quali/ed
specialist workshop. A
A
dBlue
dBlue ®
®
r
rang
ang e and
e and /ll
/lllev
level
el
The AdBlue ®
/ll le vel and range can be displa yed
via the on-board computer. The AdBlue ®
range
sh ow n depends strongly on the driving style and
operating conditions. The actual range can there-
fo re deviate from thera nge cur rently displa yed in
th e on-board computer. The information supplied
in the operator's manual rega rding there ser ve
qu antity at the /rst display warning and on the
minimum top-up quantity when the fuel tank is
em pty is also tobe understood as guide values. Engine oil
Engine oil
N
No
ot
tes on engine oil
es on engine oil
Obser vethe no tes on operating 0uids
(/ page 385). *
N
NOOTE
TE Engine damage caused byan inco r-
re ct oil /lter, incor rect oil or additi ves #
Do not use engine oils or oil /lters other
th an those which meet the speci/cations
necessary forth e prescribed service
inter vals. #
Do not alter the engine oil or oil /lter in
order toachie velonger change inter vals
th an prescribed. #
Do not use additives. #
Have the engine oil changed aTer the
prescribed inter vals. Te
ch nical data
391
391

Displa
Displa
y messag
y messag es
es Intr
Intr
oduction
oduction Inf
Inf
or
ormation about displa
mation about displa y messag
y messages
es
Display messages appear on the inst rument dis-
pla y.
Display messages with graphic symbols are sim-
pli/ed in the Owner's Manual and may di.er from
th e symbols on the inst rument displa y.The instru-
ment display sh ows high-priority display messages
in red. Cer tain display message s are accompa-
nied byawa rning tone.
Please act in accordance with the display mes-
sages and follow the additional no tes in the Own-
er's Manual.
Fo r some display messages, symbols will also be
shown:
R Õ Further information
R ¨ Hide displ aymessage
Wi th th e leT-hand Touch Control, you can select
th ere specti vesymbol byswiping tothe leT or
ri ght. Pressing Õdispla ysfur ther information on th
e media displa y.Press the¨ symbol tohide
th e display message.
Yo u can hide lo w-priority display messages by
pressing the back button Porthe leT-hand
To uch Control. The display message s willthen be
stored in the message memor y.
Re ctify the cause of a display message as quickly
as possible.
High-priority display message s cannotbe hidden.
The instrument display will show these display
messages permanently until the cause of the dis-
play message has been recti/ed.
Calling up sav
Calling up sav ed displa ed display messag
y messag es
es
On-board computer:
4 Service 5
1 message
If th ere are no display messages, No messages
will appear on the inst rument displa y. #
Scroll thro ugh the display messages byswip-
ing upwards or down wards on the leT-hand
To uch Control. #
T
To e
o e xit t
xit t he messag
he messag e memory
e memory:
:press the back
button P. Display messages and
warning/indicator lamps
401
401

Occupant safe
Occupant safe
ty
ty Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
6
Restraint sys. malfunction
Consult workshop *T
herestraint system is malfunctioning (/ page 47). &
W WARNING
ARNING Risk of injury due tomalfunctions in there straint system
Co mp onents in there straint system ma y be activated unintentionally or not deploy as intended in an accident. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. Plug-in h
Plug-in h
ybr
ybrid:
id: &
D
DAN
AN GER
GER Risk of fatal injuries due torestraint system malfunctions
Co mp onents in there straint system ma y be activated unintentionally or not deploy as planned in an accident. In
th eeve nt of an accident, the high-voltage on-board electrical system may not be deactivated as intended.
Yo u may su.er an electric shock if youto uch the damaged components of the high-voltage on-board electrical
system. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. #
ATer an accident, switch o. theve hicle immediatel y.402
402
Display message
s andwarning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
6
Front left malfunction Con-
sult workshop (examp le) *T
he cor responding restraint system is malfunctioning (/ page 47). &
W WARNING
ARNING Risk of injury due tomalfunctions in there straint system
Co mp onents in there straint system ma y be activated unintentionally or not deploy as intended in an accident. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. Plug-in h
Plug-in h
ybr
ybrid:
id: &
D
DAN
AN GER
GER Risk of fatal injuries due torestraint system malfunctions
Co mp onents in there straint system ma y be activated unintentionally or not deploy as planned in an accident. In
th eeve nt of an accident, the high-voltage on-board electrical system may not be deactivated as intended.
Yo u may su.er an electric shock if youto uch the damaged components of the high-voltage on-board electrical
system. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. #
ATer an accident, switch o. theve hicle immediatel y. Display messages and
warning/indicator lamps
403
403