2021 MERCEDES-BENZ A-CLASS SALOON radio

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
#
Stop vehicle Leave engine
running *T
he 12 V battery charge leve l is too lo w. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Leavetheve hicle running #
Ifth e display message disappears: drive on. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop. T T
yr
yr e pr
e pr essur
essur e monit
e monit or
or Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being received. The tyre pressure monitoring system is temp orarily una vailable.
The tyre pressure monitoring system will restart au tomatically as soon as the cause has been recti/ed. #
Drive on.
Tyre press. monitor inoper-
ative *T
he tyre pressure moni toring system is malfunctioning. &
W WARNI NG
ARNI NGThere is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
Ty res with insu1cient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring system checked at a quali/ed specialist workshop. 458
458
Displ
aymessages and warning/indicator lamps

To
pping up............................................ .328
ERA
ERA -GL
-GLON
ONASS tASS t es
est modet mode
St arting/ending.................................... .317
Err
Err or message
or message
see Display message
ESC (Electr
ESC (Electr onicSt
onic Stability Contr
ability Contr ol)
ol)
see ESP ®
(Elect ronic Stability Prog ram)
ESP
ESP ®
®
Crosswind Assis t.................................... 217
Tr ailer stabilisatio n................................. 217
ESP
ESP ®
®
(Electr
(Electronic St
onic Stability Pr
ability Pr ogr
ogram)
am)
Ac tivating/deactivating.......................... 218
Fu nction/no tes...................................... 216
EU type appr ov
EU type appr oval number
al number ............................. 384
Ext
Ext er
erior lighting
ior lighting
Care..................................................... .336
Ext
Ext er
erior lighting
ior lighting
see Lights F
F
F
F atigue det
atigue det ection
ection
see ATTENTION ASSIST F
F
ir
ir e e
e e xtinguisher
xtinguisher.......................................... 341
F
F irs
irst-aid kit t-aid kit (soT
(soTsided)
sided)................................. 341
Flat to
Flat towing
wing
see Tow- bar system
Flat tyre
Flat tyre MOExtended tyres................................. 342
No tes..................................................... 342
TIREFIT kit.............................................. 344
Wheel chang e........................................ 373
Floor mats
Floor mats................................................... 129
F F oil cov
oil cov er
ering
ing
Ra dar and ultrasonic sensor s................. 214
Fr
Fr ee
ee soTw
soTw are
are................................................. 45
Fr
Fr eq
eq uencies
uencies
Mobile phone......................................... 382
Tw o-w ayradio........................................ 382
Fr
Fr ont airbag (dr
ont airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er).............. 52
Fr
Fr ont passeng
ont passeng er seat
er seat
see Seat
Fr
Fr ont wheel ar ch
ont wheel ar ch
Fi tting/removing the co ver..................... 140 F
F
r
ront wheel arc
ont wheel arc h cov
h cover
er
Fi tting/removing.................................... 140
F
F uel
uel
Additives................................................ 388
Diesel.................................................... 388
E10........................................................ 387
Fu elreser ve........................................... 389
Low outside temp eratures...................... 388
Pe trol..................................................... 387
Quality (diesel )....................................... 388
Quality (petrol)....................................... 387
Re fuellin g.............................................. .182
Sulphur content..................................... 387
Ta nk content.......................................... 389
F F uel consump
uel consump tion indicat
tion indicator
or
Calling up.............................................. 175
F
F unction seat
unction seat
see Door cont rol panel
F
F uses
uses
Before replacing a fuse.......................... 360
Fu se assignment diag ram...................... .360
Fu se box in the boo t.............................. .362
Fu se box in the engine compartment......3 61 Index
499
499

Int
Int
er
erior lighting
ior lighting
Ad justing............................................... 138
Ambient lighting.................................... .138
Re ading lamp......................................... 138
Switch-o. delay time.............................. 139
Int
Int er
erior pr ot
ior pr otection
ection
Fu nction................................................ 103
Priming/deactivating............................. 103
Int
Int er
erne
ne t r
t radio
adio
see TuneIn
iPhone
iPhone ®
®
see Smartphone integ ration
ISOFIX c
ISOFIX c hild seat anc
hild seat anc hor
hor
Seats suitable for attaching...................... 68
ISOFIX c
ISOFIX c hild seat secur
hild seat secur ing syst
ing system
em
Fi tting...................................................... 70 J
J
Jack
Jack Declaration of conformity......................... 36
Storage location.................................... .372
Jum Jum p-st
p-st ar
art connection
t connection
General no tes....................................... .350 K
K
K
K e
ey
y
Ac oustic locking veri/cation signal.......... .83
Ac tivating/deactivating pre-entry cli-
mate control.......................................... 150
Battery..................................................... 84
Deactivating a function............................ 83
Emer gency key......................................... 84
Energy consum ption................................ 83
Fu nction overview.................................... 82
Ke yring attachment................................. 84
Problem................................................... 85
Unlocking setting..................................... 83
KEYLESS-GO KEYLESS-GO Deactivating a function............................ 83
Locking/unlocking theve hicle................. 87
Problem................................................... 88
Unlocking setting.................................... .83
Kic Kic kdo kdo wn
wn
Using..................................................... 180
Knee airbag
Knee airbag.................................................... 52 L
L
Lamp
Lamp see Interior lighting
Lam
Lam p (ins
p (instr trument displa
ument displa y)
y)
see Warning/indicator lamp
Lane det Lane det ection (aut ection (aut omatic)
omatic)
see Active Lane Keeping Assist
Lane K
Lane K eeping Assist
eeping Assist
see Active Lane Keeping Assist
Language
Language Notes..................................................... 291
Setting................................................... 291
Light adjus
Light adjustment tment
Low beam (d riving abroad).................... .130
Light switch
Light switch Overview................................................ 130
Lighting
Lighting see Interior lighting
see Lights
Lights Lights Active headlamps................................... 133
Ad aptive Highbeam Assis t...................... 135
Ad aptive Highbeam Assist Plu s............... 136 502
502
Index

see Map
see
Route
N N eutr
eutr al
al
Engaging................................................ 178
N
Noise oise
Wheels and tyres................................... 363
Wheels/tyres......................................... 363 O
O
Occupant safe
Occupant safe ty
ty
see Airbag
see Automatic co-driver airbag shuto.
see Automatic measures aTer an accident
see Child seat
see Pets in theve hicle
see Post-collision brake
see PRE-SAFE ®
(anticipa tory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
see Restraint system
see Seat belt
Oil
Oil
see Engine oil On-boar On-boar
d com
d comput
puter
er
Displa yingthe service due dat e.............. 324
Head-up display menu............................ 277
Instrument displa y................................. 276
Menu overview.......................................2 73
Operating.............................................. 273
On-boar
On-boar d diagnos
d diagnostics int tics interf
erface
ace
see Diagnostics connection
On-boar
On-boar d electr
d electrical syst
ical syst em batt
em batter
ery (12 V)
y (12 V)
Charging................................................ 352
Re placing.............................................. .353
St arting assis tance............................... .352
On-boar On-boar d electr
d electronics
onics
Engine electronics................................. 381
No tes..................................................... 381
Tw o-w ayradios...................................... 381
on-demand f on-demand f eature
eature
Ac tivating................................................. 26
No tes...................................................... .26
Online ser
Online ser vices
vices
Data storag e............................................ 44
Online ser
Online ser vices
vices
see In-Car O1ce
Open-sour
Open-sour ce
cesoTw
soTw are
are................................... .45Opening t
Opening t
he boo
he boot lid using y
t lid using y our f
our foot
oot
HANDS-FREE ACCESS............................. 92
Oper
Oper ating
ating 0uids
0uids
Ad Blue ®
................................................ .390
Ad ditives (fuel)....................................... 388
Brake 0uid............................................. 393
Coolant (engine).................................... 393
Engine oil............................................... 391
Fu el (diesel)........................................... 388
Fu el (petrol)........................................... 387
No tes..................................................... 385
windsc reen washer 0uid........................ .394
Oper
Oper ating safe ating safe ty
ty
Declaration of conformity (electro-
magnetic compatibility)............................ 29
Declaration of conformity (jack)...............36
Declaration of conformity (TIREFIT kit)...... 37
Declaration of conformity (wireless
ve hicle components)................................ 29
Informatio n..................................... ......... 27
Oper
Oper ating syst ating syst em
em
see On-boa rdcomputer
Output
Output see Powe r me ter 506
506
Index

Interior..................................................
.139
Sync
Sync hr
hronisation function
onisation function
Ac tivating/deactivating (control panel)... 149
Ac tivating/deactivating (MBUX multi-
media system)....................................... 149
Syst
Syst em se
em se ttings
ttings
Overview of the system settings menu.... 288
Re set function (MBUX multimedia sys-
te m)....................................................... 292
Syst
Syst em se
em se ttings
ttings
see Language T
T
T
T ailpipes (car
ailpipes (car e)
e)............................................. 336
T
T ak
ak e-bac
e-bac k of end-of-lif
k of end-of-lif e v
e vehicles
ehicles
Pr otection of the environment.................. 24
T
T ank cont
ank cont ent
ent
Ad Blue ®
................................................ .391
Fu el....................................................... 389
Re ser ve(fuel)........................................ .389
T
T ec
ec hnical data
hnical data
Axle load (trailer operation).................... 399
Component-speci/c information............ 383 Fa
stening points (t railer hitch)................ 397
Information............................................ 381
Mounting dimensions (trailer hitch)........ 397
No tes (trailer hitch)................................ 397
Overhang dimension (trailer hitch)......... .397
Re gula tory radio identi/cation (Indo-
nesia).................................................... 383
Re gula tory radio identi/cation of
small component s.................................. 383
To ngue weight........................................ 399
To wing capacity (trailer operation ).......... 398
T T elephone
elephone
Connecting a mobile phone (Passke y).... 305
Connecting a mobile phone (Secure
Si mp lePa iring)....................................... 305
Fu nctions in thete lephone menu............ 305
No tes..................................................... 302
No tes on wireless charging (mobile
phone)................................................... 126
Operating modes................................... 304
Te lephone menu overview...................... 304
Wi reless charging (mobile phone)........... 128
T
T elephon elephon y oper
y operating modes
ating modes
Blu etoo th®
telephony............................. 304 T
T
em
em per
per ature
ature
Setting theve hicle interior temp era-
ture....................................................... 147
Themes
Themes Fastening.............................................. .287
Thr
Thr ough-loading f
ough-loading f eature
eature
see Seat
T
T ie-do
ie-do wney
wn eyes
es.............................................. 123
TIREFIT kit
TIREFIT kit Declaration of conformity......................... 37
Storage location............................ .343, 344
Using..................................................... 344
T T o switc
o switc h on t
h on the ignition
he ignition
see Vehicle
T
T ongue w
ongue w eight
eight.............................................. 399
T
T ool
ool
see Vehicle tool kit
T
T op Tet
op Tether
her...................................................... 72
T
T opping up
opping up
Topping up AdBlue ®
.............................. .186
T
T ouc
ouc h Contr
h Contr ol
ol
On-board computer................................ 273
Operating.............................................. 281 Index
513 513

T
T
ouc
ouc hpad
hpad
Operating............................................. .281
T
T ouc
ouc hscr
hscr een
een
Operating.............................................. 281
Tow
Tow -awa
-a wa y pr ot
y pr otection
ection
Fu nction................................................ 102
Priming/deactivating............................. 102
Tow
Tow -bar syst
-bar syst em
em............................................ 270
Tow
Tow -st
-star
arting
ting................................................. 359
To
To wing away
wing away................................................. 356
To
To wing eye
wing eye
Fi tting.................................................... 359
St orage location..................................... 359
To
To wing met
wing met hods
hods................................... 354, 355
Tr
Tr a1c
a1c inf
infor
ormation
mation
Switching on the display......................... 299
Tr
Tr a1c
a1c Sign Assist
Sign Assist
Fu nction/no tes...................................... 241
Setting................................................... 243
System limits......................................... 241
Tr
Tr ailer hitch ailer hitch
Axle load................................................ 399
Bic ycle rack ........................................... 268 Care...................................................... 336
Coupling up/uncoupling a trailer............ 266
Fa stening points.................................... 397
Fo lding the ball neck out/in................... 265
General no tes....................................... .397
Mounting dimensions............................. 397
No tes..................................................... 264
Overhang dimension.............................. 397
Soc ket................................................... 266
To ngue weight........................................ 399
To wing capacity.................................... .398
T
T r railer oper
ailer oper ation
ation
Ac tive Blind Spot Assist.......................... 245
Ac tive Lane Keeping Assist..................... 246
Bicycle rack ........................................... 268
Coupling up/uncoupling a trailer............ 266
Fo lding the ball neck out/in................... 265
No tes..................................................... 264
Soc ket................................................... 266
Tr
Tr ailer st
ailer st abilisation
abilisation
Fu nction/no tes...................................... 217
Tr
Tr ansmission
ansmission
Engaging neutral.................................... 178
Tr
Tr ansmission (pr
ansmission (pr oblem)
oblem)................................ 179 T
T
r
ransmission position displ ay
ansmission position displ ay....................... 177
Tr
Tr anspor
anspor ting
ting
Ve hicle.................................................. 357
Tr
Tr im element (Car
im element (Car e)
e)...................................... 337
T
T uneIn
uneIn
Calling up.............................................. 322
T
T ur
ur n signal indicat
n signal indicat or
or
Ac tivating/deactivating.......................... 132
T
T ur
ur n signal lights
n signal lights
Changing bulbs (rear)............................. 141
Tw
Tw o-wa
o-wa y r
y radios
adios
Fr equencies........................................... 382
No tes on ins tallation.............................. 381
Tr ansmission output (maximum )............. 382
T
T ype approv
ype appr oval number (EU)
al number (EU) ........................... 384
T
T yr
yr e
ein0ation
in0ation com
compr
pressor
essor
see TIREFIT kit
T
T yr
yr e pr
e pr essure
essure
Checking (tyre pressure moni toring
system).................................................. 366
No tes..................................................... 364
Re starting the tyre pressure loss
wa rning system...................................... 368 514 514
Index