2021 AUDI A4 oil level
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8W1012721BC
Index
Battery
Charging (12 Volt vehicle battery)....... 232
Vehicle battery (12 Volt)............... 230
Winter operation (12 Volt vehicle battery) . 231
BLOCK POU cei: «x were: oo ceamewe oo semen 2 o seems 187
BLOWN: sess: ¢ = seene « x wanes g 2 meee 5 2 ee 4 ee 92
Bluetooth
Audio playen snus « 2 sassws ae suesens ov srw 9 2 3 201
Connecting adevice..............0000- 214
Connecting a mobile phone............ 162
Deleting a device
Device overvieW............00-.0 eee
Disconnecting a device................ 214
Displaying profiles..................0. 215
Selecting adevice.............0..000. 214
Specifying a favorite.................. 215
Boost... 6... eee eee eee 15
Boost pressure indicator................. 15
Brake fluid
Checking the brake fluid level........... 229
BrakeS.. 0... eee eee 104
Brak@fluid(: = = sams = « eam = woven se pee as 229
Emergency braking function............ 106
0) 107
New brake pads............. 00s e eee 104
Braids « savay » © aaiwa & Raeoe ¢ & SanDR ES Se ES 216
Break-in security feature............00005 36
Breaking in
New brake pads..............----000- 104
NeWetiresis « wcuin as maces a meme a 2 emma ee 242
Browser
refer to Media center...............00. 204
Businessiaddressis i s, svessns sc scan a a veamiws a aa 187
c
California Proposition 65 Warning........ 222
Battery specific...............00-0 00 231
GALLUISE sacsse + ogsiese 0 9 axons 0 4 exexeus 4 2 anneew a 166
Cameras
Coverage areaS............-.0. 000000. 118
LOGAUIONS a: « ¢ apes ¢ nates 3 paee 5 x PEER GE 119
Capacities
Puelitankss sss so somes a sess @ o aves ¥ 0 ond 287
Washer fluid reservoir................. 287
Garwashh x 5 sews « onsmeus © scagens os ayers «6 @ some 255
Gatalytic converter « sis 2 weve eo wee ee cree 220
Cell phone
refer to Telephone............00 eee eee 162
Cell phone compartment
refer to Audi phone box............... 164
Central locking...... cece eee cree eee 33
AULOILOGK « coos 2 5 seme 5 5 ete so wows Go eG 33
Convenience key sie © « socsais 2 6 srvoem + 6 voese 38
Convenience opening and closing......... 46
Luggage compartment lid............... 4l
Mechanically unlocking and locking....... 36
MessageS ......--. 0c cece eects 35
Remote control key........:0ee eee ee eee 38
SEUNG’: © wave: s 2 wecems ve arene @ aetna ¥ ewee 34
Vehicle key... 0... cece eee ee eee ee 38
Central locking switch..............0000. 35
Ceramic Drakesinis © «cassie © x seve ¥ @ suena # ane 104
Certification): « . cee: ss wean ov enw os eee « 284
Charging
refer to Power sourceS..........-.000005 82
Charging the battery
Mobile devices..................00005 202
USB': « meme 2 ¢ anus © naueu & x REINS & ¥ ORE & 165
Witelessis «secs x x woos 2 v cervaue a x stone 2 9 oon 165
Child safety lock
Climate control system controls in the rear. 44
POWEr WINDOWS! si: = © xsnas 4 § Seen & & Maram 4 es 44
Rear dOOrsis + o omc sc sami oo me oases 44
Child safety seats..............---.00005 76
Securing to the top tether anchor........ 80
Securing with a safety belt.............. 79
Securing: with LATCH s « sw « & nome « ¢ sans « 78
ClEATIAG saves 5 x nore 5 2 wows ot eee xe eee 255
Cleaning Alcantara.............-.00000. 258
Cleaning artificial leather............... 258
Cleaning carbon components........ 257, 258
Cleaning controls..................005. 258
Cleaning decorative parts andtrim........ 257
Cleaning exhaust tail pipes.............. 257
Cleaning plastic parts...........00 eee 257
Cleaning textiles = cass ¢ & exes ¢ cae se ees 258
Climate control system ............00000- 90
also refer to Automatic climate control sys-
GNA. 2 execs © 2 ceeueve = ueueat © + steams © meme = © 90
Climate control system controls in the rear
Child safety lock........... 0. cece eee 44
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8W1012721BC
Drive select
refer to Audi drive select.............0. 110
Drive system... 1.2... cee ee eee 101
AUdi drive Select sais s & news < ¢ says & 3 ve 110
Drive system (message) ........... eee eee 103
Driving down hills............ 00.000 eee 107
DFIVIMGJPFOGFAMM:. « wnaceos % 0 spesine 6 & axonese on mune 137
Driving through water...............0.. 108
Driving CIM: « cescues & a ssanees vw ones vv orn a 8 a 16
Driving tips
Driving through water...............-- 108
Efficient driving...............-00000- 102
Offroad GriWitG cows sc caws se pean es ewan 108
Uphill and downhill................00. 107
Driving:up Wills: « ssc s 2 wave 6 o sree wv sew 107
Dust filter
refer to Pollutant filter................. 90
DYMAMMIGIStEORIAG, cxsieos ov secre © « soneers © ¥ soaser Lill
E
EFimailss os i: cwcsan oa ncewios ow sesnin @ ononans wa wretnon 4 T/1,
Settings............. 0.00. e eee eee ee 171
EDL
refer to Electronic Differential Lock...... 113
EDR
refer to Event Data Recorder (EDR)...... 277
Efficiency ASSISE: s wes » x ows & a ews 8 6 ow 128
Predictive :comtro lin: « cxvim x 0 sensawe oo swowane 133
Electrical system ........ 2... cee eee eee 230
Electromechanical parking brake......... 106
Electronic Differential Lock.............. 113
Electronic immobilizer................5-. 38
Electronic Stabilization Control........... 113
Embedded SIM card............--.00005 174
Emergency assistance...............00. 261
Emergency braking function............. 106
Emergency call... «ccc. 2 mwa ve ewe 169,178
Emergency flashers..............--0000- 53
Emergency modéw
Emergency operation
DOONS eves ov comme a a same ao omnes vv om x
Fuel filler door
Luggage compartment lid............... 43
Panoramic glass roof................005 47
Sliding/tilting sunroof...............00. 46
Emissions control system..............- 220
EnergyCOnsSUMErSi. & & sive a 2 wasn ao mare oes 16
Energy management...............0005 102
Engine
Breakingiin « sss c= cee = 2 aves ov ere a ee 101
Coolant..... 0.0... cece eee eee ee eee 227
EMe@ngenty StOpis « = ewes 5 2 sees ¢ 2 wees Fs me 95
JUMp'StARtING & vesi% « 6 war % 6 senens & ewes 268
Start/Stop system ......... 0. eee ee eee 102
Starting/Stopping:: « « seme os ews 5 wen s « 95
Engine compartment
Opening and closing the hood.......... 222
OVERVIEW cscssiic xo ciueins xo anette 6H atetaaie © ooetts 223
Safety precautions..................0. 221
Engine oil
AGQING = ex ¢ = seem « = ress « ¢ ee § pe 224
GhANGING sis «sess ss rena « waver 2» omen © 226
Checking oil level.............00-.000- 224
CONSUMPtIONs « 2 was s 2 ene x eee 5 oe 224
Indicator light « sss + «owes sw ssweenn ow vase 224
Replacement interval................. 233
Temperature display............0.e00e 15
Engine sound
Audi driveselect’s osx. < + sx » x come © ee 110
Engine Start/Stop mode
refer to Start/Stop system............. 102
Engine startsystem sce 3 5 seu o 9 was o 9 som 96
Engine stop
refer to Start/Stop system............. 102
Entry/exit. IQhtingie: + scsi as essen & © wonvme a v6 53
Entryiassistanee:: 2 coca 2s acim os eee 2 o were 65
also refer to Exit assistance............. 65
Environment
Unleaded gasoline.................00. 217
ESC
refer to Electronic Stabilization Control... 113
ESC Offroad... 2.1... eee eee ee 114
ESC Sport........... 000.000.0000 0000- 114
eSIM
refer to Embedded SIM card............ 174
Event Data Recorder (EDR).............. 277
Exit assistance .... 0.2... 0.00... e eee eee 65
Exit warning ...... 0.66... e ee ee eee eee 148
Exteriomantenna «cise oo srerw wane © aecete 165
Exterior Lighting’: = = sce «= seus © x cere = 4 seus 51
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Index
Parking lock
Manually releasing.............00000- 100
also refer to Gears... 6... eee e eee eee 97
Partition W@t sca < ssces v enees s aren ase 86, 87
Pass-through... .... cc eee cence eens 86
Pedals... 2... cece eee eee eee 99
Perchlorate ....... 0. eee eee ee eee 281
Peripheral cameras............0.000085 152
Phone
Connecting a second mobile device...... 163
Disconnecting a mobile device.......... 164
SONGS ccsain » iam © © wravens a % aosmem w v soveTs 6 169
Phonebook
refer to Directory.......... 0. e ee eae 167
PIN
A-digit myAudi PIN.................00. 30
PROLECHON sev: « ¢ cee x o cares § e oem oe ee 31
Playback (media). . sss. ss sees ie cease ee 203
Podcast
refer to Online radio.............. 197,198
POLISHINGisax « ¢ eee + & eee Eee a Ree a ee 257
Pollen filter
refer to Pollutant filter................. 90
Pollutant filter’: . aces ss seee s bees ween as 90
POWEP SOUPCES:: « = seme: =v seme ee meee e 82, 202
Power WiINdOWS ......... 0 eee e eee eens 45
Malfunction ns san 2 wean es ween a 2 wees = 45
Power windows malfunction.............. 45
Predictive control.............-.00e000- 133
Predictive messages..............--005- 129
pre sense
refer to Audi presense................ 143
Presentation mode..............-+-008 192
Presets
RadiGicres s ¢ eves 5 2 neues x 5 Haus oe ROWS FB: 196
Presets list
Feferto Presetsicis <2 sais
Pressure
Tire pressure monitoring system........ 253
Tif@S': + : asvox ¢ & eaime & & eG 3 5 HORS 7 ES 245
Profile picture... . eee eee eee ee eee 30
Protecting ..... 0... 0c cece cece eee 257
Pyrotechnic elements..............000 281
296
Q
quattro... 2... eee 112
Selective wheel torque control.......... 113
R
RSGiG}: = : suse » 5 mews ¢ 2 Swe 2 a eee x eee 193
RadiOteXtiscn casi a i ance @ a anemia oo anew 196
Station list... 2.0.0... ee eee 193
Radio communications equipment........ 283
Radio‘equipment ....... eeen ee een ee eee 283
Radio Standards Specification (RSS) ....... 284
Rain/light sensor
Automatic headlights.................. 51
Intermittent mode (windshield wipers).... 58
Random
refer to Shuffle: . s sses s+ ovens peewee: 205
Range (fuel level) .................00000. 16
Reading lights.............. 2.000 eee eee 54
Rear cross-traffic assist.............0005 156
Rear lid
refer to Luggage compartment lid........ 41
Rear seatS.. 1... . cee eee eee 85, 86
Rear shelf
refer to Storage area behind the rear head
FEStrAINES wssve 2 o wawere oo esi ¥ 6 Rae @ 8 eens 83
Rearview camera... 12.1... ee eee eee eenes 152
Rear window defogger...............000 93
Rear wiper blades
Changing sec = wee ws were ov nee oo ae 8 60
Cleaning..... 2... . 6. cece eee 60
Recirculation mode..............--00005 92
RECUPERATION cesses vu suceae « & cameson ww eames ow Re 16
Refrigerant Oilivics = 5 wean eo wenn eo wwe 2 a0 287
Refueling’: ss sees 2 = saws 7 5 tees Fe ewe ro: 218
Remote access authorization (key user)..... 31
Remote control
Garage door opener..............2+-00. 48
Remote control key.............---.e eee 37
Convenience opening and closing......... 46
Key replacement...............--000-- 37
LED = suse 3 = wens = » owime oy ceeme se Rees ee 39
PANICTUMECIONS: « cscsses cs wrencce so ansnesa 3 8 arene 37
Replacing the battery.................. 39
Unlocking and locking...............005 38
also refer to Vehicle key..............-. 37