ECU AUDI S4 2021 Repair Manual

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

8W1012721BC

Removing the caps (wheel bolts)......... 264
ROP alts sass 2 2 mais o eaten w & wee we ONC oe 281
Replacement key........ cece eee eeee eens 37
Replacement parts’ « exw « « ques yo eawes x oe 283
Replacing bulbs a. = ssws st eee ee ewes ees 276
Reporting Safety Defects................ 283
Reverse gear
WEfEF LO GESTS savas sy euaw co wees co wee a 97
Reversible cargo floor..............0000e 88
RIMS 2... eee ee 250
Cleaning = « sss + © seovs 3 & sees to ews ee oe 257
ROUING’s = wanes « ween os woe eo Ree ee BeeE Ye 96
Rolling ability
Electromechanical parking brake........ 106
Transmission idley. . 5 sso + saene oo siecaun oa an 98
Roof
refer to Panoramic glass roof............ 47
Roof load. ...........2.. 020222 e eee eee 287
ROO FAG cece sxcuens ao manor a w amante « oxewemnce «ate 88
also refer to Roof rack..........-...0-4. 88
Route guidance
StOPPING swe = ones ¢ ¥ Hee se carey o 2 SOS 185
also refer to Navigation............... 181
Running direction (tires)..............-. 266
S
Safety beltSies x » saws x 2 uae ¢ ¢ mew 2» REwH 6 2 68
Cleaning.......... 0. ec eee eee eee 258
LOCKING... 6.6.6 c cece eee eee 79
Securing child safety seats.............. 79
Satellite Map seve ss wees 2 o ees 7 e owe es 188
Saving fuel
Energy CONSUMEeMSisscs so sxe v waar a 9 were 16
Recuperation........ 00. c eee eee eee ee 16
Screen
refer to Touch display...............-.. 17
Screwdriver ........ 0.00. cece eee eee 261
Search function
refer to Free text search............... 206
Seat heating............. ee eee eee eee 92
Seats
ACJUStING as: « 2 ems « 2 weaw § § see FE wR Fe 64
Cleaning « « cia se even eo one oo ae oo os 258
Folding the rearseats............... 85, 86
Head feStraints): « sass ¢ « maven ss sane ¢ ¢ ners 67
Memory function « ses + 2 vei se eens see 71

Resetting the position.................. 65
Storing a seat profile...............000. 71
Seat ventilation....................000. 92
Securing the vehicle...............0.-00. 96
Selecting a source (media).............. 203
Selector lever. « o svvne 2 x wos 2 x ames w a anes & 97
Selector lever position
WEPFEPTOLGCATS « sere ao ammraye «a sma omens © 97
Sensors
Coverage areaS... eee eee eee 118
LOGatiOnS =< < sacs ¢ + seem & s wows ey eee 2 119
Service interval display................. 233
SET REAR (button).............00000000e 92
Setting measurement units.............. 212
SettingS ..... 0... eee eee eee eee eee 212
Announcements and tones............. 212
BlUGtOOthis « 2 sss + wese s + wow x 5 Hern gee 213
Daterand time < s ecine « 2 ovens w 5 xneee 3 3 212
Language
Measurement units.................-. 212
Media... .. eee eee eee eee 207
Navigation...........0..0..0.002 eee 191
RadiGiecy: x » swe sv mee 4 e cow & yee £ ee 199
SOUMG rsx « & ssexine 6 1 aveveus wo ecicens o eneN Bo 212
SysteM . 2... ee eee 212
TiMe/ZONCcas « x mewe 7 2 aoe ¢ Hom ae BERR 212
WiItFi OtSPOt eneves oo coevene oe cress wo creer vo 176
Setting the language................... 212
Setting the time's « « saws ve ees ve cee vo 212
Shift paddles-sies < y esas ¢ weeew y ween ss ewe 99
SHGprs « s seams © o EtOH 7c REGS FOE ROR EE ese = 175
Shuffle... 2... eee eee eee 205
Side assist... 0.6... eee eee eee ee 147
Cleaning the sensors...............-.. 256
SIMiGard's sasan 3 4 case ¢ s BGG Te Rew FB eR 174
Sliding/tilting sunroof...............005- 46
Emergency closing...........--+eeeeeee 46
SUMSH AGES swims wa ssanave ox somcene @ x aeauawe ww sean 46
also refer to Panoramic glass roof........ 47
Smart Favorites
pefer to Presets ex « « ewan se een ce eee ee 196
Smartphone
refer to Telephone...........-seeee0e: 162
STOW CHAINS): « 2 qs a 2 ews a @ eee a x ReE x 251
Socket
refer to Power sourceS..........--.20-05 82
297

8W1012721BC

Repaltiseti. «. ico + 0 mass ov caw ¥ viemees ae os 261
Service life... . ee eee eee eee 244
TIVE PreSStiriws s < sews s ¢ eege & e ees ¥ Bo 245
Tire pressure monitoring system.... 252, 253
Tire pressure table.................00. 247
Tire pressure (trailer mode)............ 115
Treadwear indicators... 0000s sonia a een 244
Unidirectional................... 237, 266
Uniform tire quality grading............ 251.
Tires and wheels
Glossary of tire and loading terminology .. 238
Tires and vehicle load limits............ 248
Toll Module
refer to Integrated Toll Module......... 125
ToolS. 1... eee eee eee 261
Top tether anchor (securing the child safety
S@at) 6. eee eee 80
Touch display
Adjusting the brightness................ 19
Operating « « ses 2 6 mes 2 o waws s wawe we ¥ vrs 17
TOWING: + « sams 2 & eee 2 & emis 2 o pewE 2 & Bee 269
TOWING OOD. seavers «x omens ¢ x ees Fo ER a 2 oe 271
Towing protection monitoring............. 36
TPMS
Tire pressure monitoring system........ 253
Traffic incidents
refer to Online traffic information....... 190
Traffic information « secsia 2 2 wioww s owen ws acre 191,
Online traffic information.............. 190
Tiraffic famiassist 5 novos» sorte wo exes « + swore 138
Traffic light information................ 123
Traffic sign recognition................. L21
Traffic SIGNS ie: = ¢ sews + y saws 3 e ewes § ea 124
Trailer towing sc < = eee ¢ » meen 2s eee 2 ees 115
Tongue weights . visws ss sensu < w came + « eesue 115
Trailer load... 2... eee eee eee eee 115
TURMHASSISE
yess « os suneoe « 0 eestor 0 staneas a exo 146
TUM SIQMAlS eriiios oe evaens wo cnavene +o vara + renin 52
U
Uniform tire quality grading............. 251
Unlocking and locking................--. 33
BYsFEMMGTECONECOL,. cece os viaceue wo aussene © vane 38
Using the lock cylinder................. 36
With Audi connect vehicle control........ 39
With the central locking switch.......... 35
With the convenience key............... 38
Update (software) ..............2--000. 213
USB
Adapter... 0.2... ce eee eee eee eee eee 165
USB charging port..............00000005 82
USB drive
Supported types/formats.............. 207
USB stick
refer to Audi music interface........... 202
Users
LOCAL USERS sisi so eaume 6 o even © & swans #8 sere 30
myAudi users... 2.22... eee eee eee 30
Using residual heat..............00. 0000 93
V
Waletiparking siciss < «cosas no nests x 6 oneness « a ai 48
Vanity Mitotic o 3 wis 6 wanen 0 + acme & 6 coven 57
Vehicle
Care/cleaning............ cece eee eee ee 255
Dimensions .............000-.00 ee eee 286
Identification data...............0 000s 286
OUP ORSCNVICE coctine x 2 mses oo onesie wo aetne «6 260
Raising... 6... eee eee eee eee 264
StartiniG ce: « + aces « = wens 5 2 eee & o eee eo 95
Unlocking and locking...............05. 38
Vehiclescaresisns oo sca ee acer oo owen +o ons 255
Vehicle control services.............00.. 175
Vehicletdata labe@leys : « sw 2 «ewe 2 eames 2 2 2 286
Vehicle identification number............ 286
Vehicle jack... 22... ee eee eee ee eee 261
LITLINIG POINES: « o cews ¢ « www oo ews eo eee 264
Vehicle keys: « « see ys sees 4s sews se ews 33; 37
Vehicle starting system................. 103
Vehicle tool kit...............0000000-. 261
Ventilation...................0.0000 08 90
VIEW button... 2.6... eee eee eee eee 13
WoiGemalss x sas os snasnne ow winnsne 6 avateae ow « 168
Voice recognition system ...........ee sees 26
External... 6.0.0... cece eee eee ee 27
Operating’: « « ase < paves & HR B= ERE a oe 26
Ww
Warning lights
refer to Indicator lights...............0.. 7
299