2021 MERCEDES-BENZ A-CLASS HATCHBACK service

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
409
409

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Request service personnel from the operator of thech arging station via the emer gency call button attached tothe
ch arging station or the emer gency call numbers.
Vehicle not currently being
charged Charging station
fault *A
malfunction has occur red in thech arging station or the RFID card is not recognised. #
Start thech arging process at a di.erent charging station.
or #
Have the RFID card checkedto ensure it is functioning.
Charging method currently
unavailable Please try
again or change charging
method *A
temp orary malfunction has occur red in thech arging station. #
Wait until the malfunction has passed.
or #
Start thech arging process at a di.erent charging station.
Charging fault Please
change charging method
See Owner's Manual *A
temp orary malfunction has occur red in thech arging station. #
Wait until the malfunction has passed.
or #
Start thech arging process at a di.erent charging station.
Only electric drive availa-
ble Power limited *T
he fuel tank is em pty and the combustion engine is switched o.. The output of your vehicle is limi ted because you
are driving in elect ric mode. 424 424
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Refuel immedia tely.
Subse quentl y,there may be temp orary restrictions in theav ailability of elect ric mode over a driving distance of
50 km.
If th ere is fuel in theve hicle, there is a fault with the combustion engine. #
Consult a quali/ed specialist workshop.
"Electric" drive program
currently unavailable *T
hecharge leve l of the high-voltage battery is not su1cient forth e Electric drive prog ram.
Char gethe high-voltage battery (/ page 194).
Reduced drive system per-
formance See Owner's
Manual *T
he drive system switches toemer gency ope ration mode due toa malfunction. #
Drive on carefull y. #
Consult a quali/ed specialist workshop.
Û
Battery overheated Stop,
everybody out! Outdoors if
possible *T
he high- voltage battery has overheated. There is a risk of /re. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
If possible, stop theve hicle in the open air and ensure that all vehicle occupants getout.
% Supporting vehicle functions may activate automaticall y,e.g. the air-recirculation mode as part of climate control. #
Do not continue driving. #
If smoke is present, lea vethe danger zone and call the /re service immediatel y. #
Consult a quali/ed specialist workshop even if there are no extern al signs of a /re. Displ
aymessages and warning/indicator lamps
425 425

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ *T
here is a malfunction in the engine cooling system. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C. 436
436
Display messages and
warning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
R The engine coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theeve nt of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. #
Notethe messages on the instrument displa y.
If t If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it until the engine has cooled down. #
Check the coolant le vel (/ page 336). 482
482
Display message
s andwarning/indicator lamps

A
A
ctiv
ctiv e P
e P ar
ar king Assist
king Assist
Exiting a parking space.......................... 268
Fu nction................................................ 265
Pa rking.................................................. 266
System limitations..................................2 65
A
A ctiv
ctiv e Ser
e Ser vice Sy
vice Sy st
stem PL
em PL US
US
see ASS YST PLUS
A A ctiv ctiv e Speed Limit Assist
e Speed Limit Assist
Display................................................... 236
Fu nction................................................ 236
A
A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 240
Ac tive Emer gency Stop Assist................ 240
Fu nction................................................ 238
System limits......................................... 238
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 226
A
A dap
dap tiv
tive cr
e cr uise contr
uise contr ol
ol
see Active Distance Assist DISTRONIC
A
A dap
dap tiv
tive Highbeam Assist
e Highbeam Assist
Ac tivating/deactivating.......................... 140
Fu nction................................................ 139
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 140
Switching on/o..................................... 141 A
A dBlue
dBlue ®
®
Ad ditives................................................ 398
Capacity................................................ 399
No tes..................................................... 192
Purit y.................................................... .398
To pping up............................................ .192
A
A dditional door lock
dditional door lock ....................................... 86
A A dditiv
dditiv es
es
Ad Blue ®
................................................ .398
Engine oil............................................... 399
Fu el....................................................... 396
A A dditiv dditiv es (A
es (AdBlue
dBlue ®
®
)
)
see AdBlue ®
A
A dditiv
dditiv es (engine oil)
es (engine oil)
see Additives
A
A dditiv
dditiv es (fuel)
es (fuel)
see Fuel
A
A djus
djus ting t
ting t he headlam
he headlam p r
p range
ange ...................... 135
ATer
ATer -sales
-sales ser
service
vice
see ASS YST PLUS
Air conditioning menu
Air conditioning menu Calling up.............................................. 154 Air dis
Air distr
tribution
ibution
Setting................................................... 153
Setting (MBUX multimedia system)......... 155
Air inlet Air inlet see Air-water duct
Air pr
Air pr essure
essure
see Tyre pressure
Air v
Air v ents
ents
Ad justing (front)..................................... 160
Ad justing (rear)...................................... 161
Air v
Air v ents
ents
see Air vents
Air
Air -conditioning syst
-conditioning syst em
em
see Climate cont rol
Air
Air -r
-recir
ecir culation mode (wit
culation mode (wit h
h/ne
/ne
par
par ticle
ticle pr
pre/lt
e/lt er)
er).......................................... 155
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 337
Airbag
Airbag Activation................................................ 47
Fr ont airbag (driver, front passenger)........ 53
Installation locations................................ 53
Knee airbag............................................. 53 Index
493
493

Overview.................................................
.53
PA SSENGER AIR BAG indicator la mps...... 57
Pr otection................................................ 54
Re duced pr otection.................................. 55
Side airbag.............................................. 53
Wi ndow airbag......................................... 53
Air0 ow
Air0ow
Setting................................................... 153
Alar Alar m syst m syst em
em
see ATA (anti-theT alarm system)
All-wheel dr
All-wheel dr ive
ive
see 4M ATIC
Ambient lighting
Ambient lighting Setting (MBUX multimedia system)........ .142
Andr
Andr oid A
oid A uto
uto
see Smartphone integ ration
Animals
Animals Pets in theve hicle.................................... 80
Anti-loc
Anti-loc k br
k braking syst
aking syst em
em
see ABS (Anti-lock Braking System)
Anti-skid c
Anti-skid c hains
hains
see Sn owchains Anti-t
Anti-theT
heTprot
pr otection
ection
Ad ditional door loc k................................. 86
Immobiliser.............................................. 99
Anti-t
Anti-theT heTprot
pr otection
ection
see ATA (anti-theT alarm system)
Anticipat
Anticipat or
ory occupant pr ot
y occupant pr otection
ection
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay
Apple CarPlay ®
®
see Smartphone integ ration
Assist Assist ance syst ance syst ems
ems
see Driving saf ety sy stem
ASS YS
ASS YST PL
T PL US
US
Battery disconnection period s................ 331
Displaying the service due dat e.............. 330
Fu nction/no tes...................................... 330
Re gular maintenance work..................... 330
Special service requ irements................. 330
AT
ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alarm........................... 100
Fu nction.................................................. 99
Interior pr otection function.....................1 01Priming/deactivating interior pr
otec-
tion........................................................ 101
Priming/deactivating tow- awa y pro-
te ction................................................... 101
To w- awa y protection function................. 100
A
A TTENTION ASSIST TTENTION ASSIST
Function................................................ 227
Setting.................................................. .229
System limitations.................................. 227
A A tt tt ention assist
ention assist ant
ant
see ATTENTION ASSIST
A
A ut
ut hor
hor ised w
ised w ork
orkshop
shop
see Quali/ed specialist workshop
A
A ut
ut omatic car w
omatic car w ash mode
ash mode
Ac tivating............................................... 339
A
A ut
ut omatic co-dr
omatic co-dr iv
iver airbag
er airbag shut
shuto.
o.
Fu nction of co-driver airbag shuto........... 56
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol
see Active Distance Assist DISTRONIC
A
A ut
ut omatic dr
omatic dr iving lights
iving lights ................................ 135
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/stop function 494
494
Index

Cr
Cr
osswind Assist
osswind Assist
Fu nction/no tes...................................... 223
Cr
Cr uise contr
uise contr ol
ol
Ac tivating............................................... 230
Buttons.................................................. 230
Calling up a speed................................. 230
Deactivating........................................... 230
Fu nction................................................ 229
Maximum design speed.......................... 178
Re quirements:....................................... 230
Selecting............................................... 230
Setting a speed...................................... 230
St oring a speed...................................... 230
System limitations.................................. 229 D D
Dam
Dam ping adjus
ping adjus tment
tment.................................... 254
Dashboard
Dashboard see Cockpit
Dashcam
Dashcam Notes..................................................... 306
Selecting a USB device......................... .307
St arting/stopping a video recording...... .307 Dat
Dat a acq
a acq uisition
uisition
Ve hicle..................................................... 42
Dat
Dat a pr ot
a pr otection r
ection r ights
ights
Data storag e............................................ 45
Dat
Dat a st
a st or
orage
age
Data pr otection rights............................. .45
Electronic control units............................ 42
Online services....................................... .44
Ve hicle..................................................... 42
Deactiv Deactiv ating t
ating the alar
he alar m (AT
m (ATA)
A)........................ .100
Dealer
Dealer ship
ship
see Quali/ed specialist workshop
Declar
Declar ation of conf
ation of conf or
ormity
mity
Elect romagnetic compatibilit y.................. 29
Impor ter addresses.................................. 36
Jack.........................................................36
Speci/c absor ption rate........................... 29
TIREFIT kit................................................ 37
Wi reless vehicle component s................... 29
Decor
Decor ativ ative f
e f oil (cleaning ins
oil (cleaning instr tructions)
uctions)........... 341
DeN
DeNOx ag Ox ag ent
ent
see AdBlue ® Des
Destination entry
tination entry
Entering a POI or addres s....................... 302
Det
Det ecting inatt
ecting inatt entiv
entiveness
eness
see ATTENTION ASSIST
Diagnos
Diagnostics connection tics connection.................................. 39
Diesel
Diesel Low outside tempe ratures...................... 396
No tes..................................................... 396
Digit
Digit al Owner's Manual
al Owner's Manual.................................. 22
Dingh
Dingh yto
y to wing
wing
see Tow- bar system
Dipped beam
Dipped beam Changing bulbs..................................... .145
DIRECT SELECT lev
DIRECT SELECT lev er
er
Engageing reve rsege ar.......................... 184
Engaging drive position.......................... 185
Engaging neutral................................... .184
Engaging park position automaticall y...... 184
Fu nction................................................ 183
Selecting park position........................... 184
Displa
Displa y (car
y (care)
e)............................................... 343
Displa
Displa y (MBUX multimedia syst
y (MBUX multimedia syst em)
em)
Home sc reen.........................................2 86 Index
499
499