2021 MERCEDES-BENZ A-CLASS SALOON steering wheel

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
T
!
÷
inoperative See Owner's
Manual *
EBD, ABS and ESP ®
are malfunctioning.
Other driving systems and driving saf ety systems (e.g. BAS) may also be malfunctioning. &
W WARNING
ARNING Risk of skidding if EBD, ABS and ESP ®
are malfunctioning
The wheels may block during braking and ESP ®
does not per form any vehicle stabilization.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addi-
tion, other driving saf ety sy stems are swit ched o.. #
Drive on carefull y. #
Have the brake system checked immediately at a quali/ed specialist workshop. Active Brake Assist Func-
tions currently limited See
Owner's Manual *V
Vehicles wit
ehicles wit h t
h the Dr
he Dr iving Assist
iving Assist ance P
ance Pack
ackag
age:
e: Ac tive Brake Assist with cross-t ra1c function, Evasive Steering Assist or
PRE‑SAFE ®
PLUS are temp orarily una vailable or only partially available.
V
V ehicles wit
ehicles wit hout t
hout the Dr
he Driving Assist
iving Assist ance P
ance Pack
ackag
age:
e: Ac tive Brake Assist is temp orarily una vailable. #
Drive on
As soon as the ambient conditions are within the system limits, the system will become available again.
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra1c conditions and restart
th eve hicle. 454
454
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Tyre press. monitor inoper-
ative No wheel sensors *T
he wheels /tted do not ha vesuitable tyre pressure senso rs. The tyre pressure monitoring system is deactivated. #
Fit wheels with suitable tyre pressure sensors.
h
Wheel sensor(s) missing *T
here is no signal from the tyre pressure sensor of one or more wheels. No pressure value is displa yedfo rth e a.ected
tyre. #
Have thefa ulty tyre pressure sensor replaced at a quali/ed specialist workshop.
h
Check tyre(s) *T
he tyre pressure in one or more tyres has dropped signi/cantl y.
The wheel position is displa yed. A warning tone also sounds. &
W WARNI NG
ARNI NGRisk of an accident due toinsu1cient tyre pressure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyre pressure (/ page 364) andthe tyres. Display messages and
warning/indicator lamps
459
459

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h
Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the di.erence in tyre pressure between the individual
wheels is toogr eat. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitoring system (/ page 367).
h Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenl y.The wheel position will be displa yed. &
W
WARNING
ARNING Risk of an accident from driving with a 0at tyre
R The tyres can overheat and be damaged.
R The driving characteristics as well as the steering and braking characteristics may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive with a 0at tyre. #
Do not exceed the maximum permissible driving distance in emer gency mode and the maximum permissible
speed with a 0at MOExtended tyre. #
Obser vethe no tes on 0at tyres. No
tes in theev ent of a 0at tyre (/ page 342). #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyres. 460
460
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es
es
ç - - - km/h..................................... 441
È - - - km/h..................................... 441
h - - - km/h..................................... 440
# 12 V battery See Owner's Man-
ual......................................................... 456
ò Acoustic presence indicator
inoperative............................................ .415
: Active Light System inoperative..... 409
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 465
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 464
¯ AdBlue system fault Engine
start not possible................................... 465
¯ AdBlue system fault See Own-
er's Manual............................................ 464
5 Add 1 litre engine oil when next
re fuelling ............................................... 466 é
ATTENTION ASSIST inoperati ve..... 440
é ATTENTION ASSIS T:Take a
break!.................................................... 440
: Automatic driving lights inoper-
ative...................................................... 409
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 417
û Before starting the engine, turn
th e steering wheel.................................. 424
J Brake immediately ........................ 438
Á Change key batteries .................... 406
è Charger cable connected .............. 415
J Check brake 0uid le vel.................. 439
ï Check trailer hitch lock (white
display message) .................................... 421
h Check tyre(s) ................................ 459
! Clean the fuel /lter....................... 429
ÿ Coolant Stop vehicle Switch
engine o............................................... 428 !
currently una vailable See Own-
er's Manual............................................4 51
÷ currently una vailable See Own-
er's Manual............................................4 52
5 Engine oil le vel cannot be meas-
ured....................................................... 467
5 Engine oil le velRe duce oil le vel..... 466
5 Engine oil le velSt op vehicle
Switch engine o.................................... 466
5 Engine oil pressure Stop Switch
o. engine.............................................. 467
ä Fault Drive at max. 80 km/h ......... 450
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 03
& inoperative Battery low................. 412
& inoperative Char geHV battery...... 413
& inoperati veHigh-voltage battery
ch arging inco mplete ............................... 413
& inoperative Refuel vehicle............. .413
& inoperative See Owner's Man........ 412 492 492
Index

¸
temp orarily una vailable Sensors
dirty....................................................... 448
Ú Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 463
+ Top up coolant See Owner ’s
Manual.................................................. 427
¥ Top up washer 0uid...................... .426
u Towing not permitted See Own-
er's Manual ............................................ 415
d Trans. oil overheated Drive on
with care................................................ 432
! Turn on the ignition torelease
th e parking brake ................................... 438
Ú .................................................... 463
d Vehicle is operational Switch o.
ignition before exiting............................. 421
h Warning tyre defect....................... 460
h Wheel sensor(s) missing ................ 459Ú
XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 464
"Electric" drive prog ram cur rently
una vailable............................................. 417
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 446
Ac tive Blind Spot Assist inoperative........ 446
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual.................................................. 447
Ac tive bonnet malfunction See Own-
er's Manual............................................ 424
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........454
Ac tive Brake Assist Functions limi ted
See Owner's Manual.............................. 455
Ac tive Distance Assist available again ..... 443
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 442Ac
tive Distance Assist inoperative.......... 442
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 447
Ac tive Lane Keeping Assist inoperative... 447
Ac tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 444
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 444
Ac tive Steering Assist inoperative...........4 44
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 410
Ad aptive Highbeam Assist inoperative ....4 11
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 411
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .411
Anti-theT alarm system Malfunction ....... 426
Apply brake todeselect Park (P) posi-
tion....................................................... .430 494 494
Index

Seat — Calling up stored settings...........
.117
Seat — Storing settings........................... 117
Menu (on-boar
Menu (on-boar d com
d comput
puter)
er)
Head-up display..................................... 277
Overview................................................ 273
Mer
Mer cedes me app
cedes me app
Information............................................ 311
No tes...................................................... .26
on-demand feature................................... 26
Mer
Mer cedes me calls
cedes me calls
Ar ranging a service appointment............ 307
Calling the Mercedes-Benz customer
centre.................................................... 306
Calling the Mercedes-Benz Customer
Centre aTer automatic accident or
breakdown de tection............................. 307
Consenting todata transfer.................... 308
Information............................................ 306
Making a call via theove rhead control
panel..................................................... 305
Tr ansfer red data..................................... 308
Mer
Mer cedes me connect cedes me connect
Ac cident and Breakdown Managemen t...3 10
Information............................................3 09Tr
ansfer red data..................................... 311
Mer
Mer cedes-
cedes- AMG v
AMG vehicles
ehicles
No tes..................................................... 156
Mer
Mercedes-Benz emerg cedes-Benz emerg ency call sy st
enc y call sy stem
em
Au tomatic emer gency call...................... 314
Information........................................... .314
Information about data transfer.............. 316
Manual emer gency call.......................... 315
Overview................................................ 314
Self-diagnosis........................................ 316
St arting/ending ERA-GLONASS test
mode..................................................... 317
Mer Mercedes-Benz ser cedes-Benz ser vice centre
vice centre
see Quali/ed specialist workshop
Messag
Messag e (ins
e (instr
trument displa
ument displa y)
y)
see Displ aymessage
Messag
Messag e memory
e memory ......................................... 401
Mirr
Mirr ors
ors
see Outside mir rors
Mobile phone
Mobile phone Frequencies........................................... 382
No tes on wireless chargin g.................... 126
Tr ansmission output (maximum )............. 382 Mobile phone
Mobile phone
see Smartphone integ ration
see Telephone
Model type
Model type see Vehicle identi/cation plate
MOExt
MOExt ended tyr
ended tyr es
es....................................... .342
Mot
Mot orwa
or wa y mode
y mode .......................................... .134
MUL
MUL TIBEAM LED
TIBEAM LED.......................................... 133
Multifunction st
Multifunction st eer
eer ing wheel
ing wheel
Overview of buttons............................... 273
Multifunction st
Multifunction st eer
eering wheel
ing wheel
see Steering wheel
Multimedia syst
Multimedia syst em
em
see MBUX multimedia system N
N
N
N a
avig
vig ation
ation
Ac tivating............................................... 294
No tes..................................................... 293
Overview................................................ 295
Sh ow ing/hiding the menu...................... 294
Na Na vig
vigation
ation
see Destination entry Ind
ex
505
505

Seat cov
Seat cov
er (Car
er (Care)
e)......................................... 337
Seat heating
Seat heating Activating/deactivating.......................... 113
Seat v
Seat v entilation
entilation
Switching on/o..................................... 113
Selecting a g
Selecting a g ear
ear
see Changing gears
Select
Select or lev
or lever
er
see DIRECT SELECT le ver
Self-t
Self-t est
est
Au tomatic front passenger airbag shut
o............................................................. 57
Sensor
Sensor s (car
s (care)
e)............................................. 336
Ser
Ser vice
vice
see ASSY STPLUS
Ser
Ser vice cent re
vice centre
see Quali/ed specialist workshop
Ser
Ser vice int
vice int erv
erval display
al display
see AS SYST PLUS
Se
Se tting a speed
tting a speed ............................................ 172
Se
Se tting a speed
tting a speed
see Cruise control Se
Se
tting t
tting t he map scale
he map scale
see Map
ShiT
ShiT paddles
paddles
see Steering wheel gearshiT paddles
ShiTing
ShiTing g
gears
ears
GearshiT recommendation............ .177, 180
Side airbag
Side airbag..................................................... 52
Side im Side im pact prot
pact pr otection
ection ................................. 256
Side windo ws
Side windo ws
Au tomatic function.................................. .95
Child saf ety lock in there ar..................... .80
Closing using theke y............................... 96
Co nve nience closing............................... .96
Con venience opening.............................. .95
Opening with theke y................................ 95
Opening/closing...................................... 94
Problem................................................... 96
Ra in closing function................................ 95
Sliding sunr
Sliding sunr oof oof
Au tomatic functions................................. 99
Closing................................................... .97
Closing using theke y............................... 96
Opening................................................... 97
Opening wi th theke y................................ 95 Problem................................................. 100
Ra in-closing feature................................ .99
Smar
Smar tphone tphone
see Sma rtphone integ ration
see Telephone
Smar
Smar tphone int
tphone int egr
egration
ation
Overview................................................ 313
Sno
Sno w c
w chains
hains................................................3 63
Soc ke
Soc ket (12 V)
t (12 V)
Boot/luggage compartment................... 125
Fr ont centre console.............................. 125
Soc ke
Soc ket (115 V)
t (115 V)
Re ar....................................................... 125
SoTw
SoTw are
areupdate
update
System updates.................................... .288
Sound
Sound PRE-SAFE ®
Sound................................... 59
Sound menu
Sound menu Functions overview................................ 323
Spar Spar e wheel e wheel
see Emer gency spa rewheel
Specialis
Specialis t w
t w ork
ork shop
shop
see Quali/ed specialist workshop Index
511
511

V
V
ision
ision
Demisting windo ws................................ 149 W
W
W
W ar
ar ning lamp
ning lamp
see Warning/indicator lamp
W
W ar
ar ning syst
ning syst em
em
see ATA (anti-theT alarm system)
W
W ar
ar ning tr
ning tr iangle
iangle
Re moving............................................... 340
Setting up.............................................. 341
W
W ar
ar ning/indicat
ning/indicat or lamp
or lamp
! ABSwarning lamp......................... 480
Ó Active Brake Assist warning lam p..4 79
J Brake system warning lamp (red)... 478
J Brake system warning lamp (yel-
low)....................................................... 477
ÿ Coolant warning lamp (red)........... 473
ÿ Coolant warning lamp (yellow).......4 75
! Electric parking brake indicator
lamp (red).............................................. 477 #
Electrical fault warning lamp
...................................................... 472, 476
; Engine diagnosis warning lamp...... 475
å ESP®
OFF warning lam p................ 481
÷ ESP®
wa rning lamp 0ashes........... 480
÷ ESP®
wa rning lamp lights up......... 481
æ Fuelreser vewarning lamp lights
up.......................................................... 476
Ù Powe r steering warning lamp
(red)...................................................... 472
_ Reduced warning lamp po wer....... 471
6 Restraint system warning lam p...... 469
ü Seat belt warning lamp 0ashes...... 470
ü Seat belt warning lamp lights up.... 471
Ú System er rorwa rning lam p........... 471
! The electric parking brake (yel-
low) indica tor lam p................................. 477
ï Trailer tow hitch warning lam p....... 473
h Tyre pressure monitoring sys-
te m wa rning lamp 0ashes....................... 482 h
Tyre pressure monitoring sys-
te m wa rning lamp lights up.................... 483
L Warning lamp for distance
wa rning function.................................... 479
Overview................................................ 468
PA SSENGER AIR BA G............................... 57
W
W arr arr anty
anty........................................................ 41
W
W ashing b
ashing b y hand (car
y hand (car e)
e)................................ 334
W
W at
at er t
er t ank
ank
see Air-water duct
W
W eat
eat her inf
her inf or
ormation
mation..................................... 299
W
W eb br ow
eb br owsers
sers
Overview................................................ 312
Wheel c
Wheel c hange
hange
Fi tting a new wheel................................ 377
Lo we ring theve hicle.............................. 377
Preparation............................................ 373
Ra ising theve hicle................................. 374
Re moving a wheel................................. .376
Re moving//tting hub caps..................... 373
Wheel c
Wheel c hange
hange
see Emer gency spa rewheel Index
517
517