2021 AUDI A8 key battery

4N0012721BF
High-voltage system

If the driver's door is opened while the ignition is
switched off, the current battery charge level and
the high-voltage battery range will be displayed
in the instrument cluster. If charging is in prog-
ress, the remaining charging time will also be
displayed.
Immediate charging and timer charging
You can switch between the immediate charging
@ and charging timer @) options during the
charging process if a charging timer is set
=> page 136. Press the corresponding button to
do this.
Ending the charging process
You can interrupt the charging process at any
time.
— Unlock the vehicle or press the @/@) button
when the vehicle is unlocked, and the LED will
turn on.
— Remove the charging connector. If the charging
connector is not removed within 30 seconds, it
will automatically relock and the charging proc-
ess may continue.
— Put the cap back on the charging port.
— Close the charging port door.
— Disconnect the charging cable from the power
supply if necessary or return it securely to the
charging station.
— Install the protective caps on the charging ca-
ble again.
— If you are transporting the charging cable in
the vehicle, store it securely > page 139.
If the charging connector cannot be removed,
you must unlock it manually > page 137.
If you cannot disconnect the charging connector
from the charging station, authenticate yourself
again at the charging station and then try again
to disconnect the charging connector. If you still
cannot disconnect the charging connector from
the charging station, contact the charging sta-
tion operator.

A WARNING
— Do not disconnect the charging cable from
the socket or the vehicle charging port while
the vehicle is charging. End the charging
process before removing the charging cable
from the socket in order to reduce the risk of
damaging the connector contacts from
sparks.
—If the charging unit is damaged, do not
charge using the charging port to reduce the
risk of injury.
— If the charging unit is damaged or the
charging port door cannot close or is miss-
ing, drive immediately to an authorized Audi
dealer or authorized Audi Service Facility
and have the malfunction corrected to re-
duce the risk of injury.
() Note
If you drive with the charging unit open, both
the charging port door and the electronics in-
stalled behind it could be damaged. Check
each time after charging if the port door is
locked before you start driving the vehicle.
@) Tips
— If the parking brake is set, it could create
noises when the charging connector is con-
nected.
— Remove ice and snow in the charging unit
using a hand brush and solvent-free deicing
spray.
— The vehicle radio and TV systems may have
limited reception when charging the vehicle.


Charging display
Applies to: vehicles with plug-in hybrid drive
The charging display is an LED light on the charg-
ing unit @) > page 134, fig. 100 that indicates
the charging status. The key for the LED light is
explained in the following table.
135

4N0012721BF
Parking and maneuvering


the vehicle is too far. Make sure the connec-
tion is sufficient, and when in doubt, resume
parking the vehicle yourself.
— Blocking notifications, tones, and vibrations
increase the risk of an accident. The myAudi
app can only warn you if dangers are detect-
ed if you make sure that your mobile device
allows all notifications, tones, and vibra-
tions for the myAudi app.

@) Note
— Do not use remote controlled parking when
transporting cargo that projects outside of
the vehicle or when snow chains are mount-
ed.
— Remote controlled parking may guide the
vehicle either away from curbs or onto them
if other vehicles are parked on the curb.
Make sure that your vehicle's tires and rims
are not damaged. Resume control of the ve-
hicle in time or stop the parking process if
needed to prevent damage.
— In parking spaces without curbs, maintain a
distance of at least 19 inches (50 cm) from
walls and buildings in order to reduce the
risk of vehicle damage.
@) Tips
— Follow the legal regulations in the country
where you are operating the vehicle when
using remote controlled parking. Remote
controlled parking may be prohibited in
some countries. The system may be unavail-
able in countries where it has been deacti-
vated in order to comply with legal regula-
tions. Data will not be transmitted to Audi.
The driver is always responsible for adhering
to the regulations applicable in the country
where the vehicle is being operated.
— Any individual that uses the mobile device
for remote controlled parking is considered
the driver and is participating in traffic. The
driver is always responsible for adhering to
the regulations for using remote controlled

)_ System availability may be limited depending on the mar-
ket.
2) In preparation at the time of printing.
parking that are applicable in the country
where the vehicle is being operated.
— Do not endanger any other road users when
using remote controlled parking. Testing re-
mote controlled parking in a parking lot
with minimal traffic is recommended.
— Your mobile device should have a sufficient
battery charge level. If necessary, charge
the mobile device before starting to drive.
— Do not use the remote controlled parking
function with devices that are faulty or dam-
aged or whose function is impaired. Only
use the operating systems approved by the
mobile device manufacturer.
— When using remote controlled parking, al-
ways pay attention to the areas where your
vehicle can be accessed. Check that no one
can enter your vehicle and if the vehicle has
been locked after parking is completed.
Take the vehicle key with you when leaving
the vehicle.
Applies to: vehicles with remote park assist plus
The following steps must be completed before
using for the first time:
> Create a myAudi account by registering in the
myAudi app or at my.audi.com, depending on
your country.
> Add your vehicle to your myAudi account.
> Set the key user > page 38.
> Install the myAudi app on your mobile device
and log in with your access information.
Device compatibility
The mobile device will be checked at the start of
a parking procedure. If an incompatibility is de-
tected, it will be displayed in the myAudi app.
Audi does not recommend using the function if
an incompatibility is detected > A\.
A selection of supported Bluetooth devices can
be found in the database for tested mobile devi-
ces at www.audi.com/bluetooth. Compatibility
203
>

Index

Battery
Charge levelindicator...............00. 12
Charging (12 Volt vehicle battery)....... 286
High-voltage battery.................. 131
Vehicle battery (12 Volt)............... 284
Winter operation (12 Volt vehicle battery) . 285
Battery (vehicle)
refer to High-voltage battery........... 131
Blinds
refer to Panoramic glass roof............ 53
BlOGk rote circus so ieee 2 ase 29 mem > wom 236
BlOWED's + sews x x wees & 2 maw x 2 se ge ewe F 101
Bluetooth
Audio player « scenes: 6s scenix <5 wens ¥ 0 eee © 2 251
Connecting adevice...............000- 265
Connecting a mobile phone............ 209
Deleting adevice vss si esas es eae ee ewe 266
Device overvieW.... 0.62... ee eee eee eee 265
Disconnecting adevice................ 265
Displaying profiles..................0. 266
Selecting adevice...............-.00. 265
Specifying a favorite...............00. 266
Boost... 2... eee eee eee 16
Boost function.................0 eee ee 112
Boost pressure indicator................. 16
Brake fluid
Checking the brake fluid level........... 283
Brakes... 2... cee eee 119
Brakeifllids: « + sawex x = yew 2 2 eee 2 2 cee 283
Emergency braking function............ 121
Hot... eee eee 122
New brake pads.........-. 00 eee eee ee 119
Brands..............00000 0 cece eee eee 268
Break-in security feature................. 44
Breaking in
New brake pads............0.--000 eee 119
New tires. 5s sccm so moa vo meen yo so oe 296
Browser
refer to Mediacenter.................. 254
Bulb replacement.............-.020-00. 332
Business. addresses. < win. < aan oa same oo 236
Cc
California Proposition 65 Warning........ 275
Battery specific...............0.-.00. 285
CaLLLISE,. ssccane x avons w os awawees vw aoe octave 215
346
CaMONAS csciaics i o cairns o & cnwcuns vo somes x a seco 151
Locations..... 6... eee eee eee 152
Capacities
FUGUTANKS ¢ i wasn 2b imaae o anon Gs RoE GE a 344
Washer fluid reservoir................. 344
GCarGO Nets s = weg s were ss were © = Heme & x Be 98
Gariwashi« « « wey: «2 ewes = 2 wats bo ee oe oe 310
Catalytic converter........... 0. eee eee 273
Cell phone
refer to Telephone..............--.05- 209
Cell phone compartment
refer to Audi phone box.............4. 211
Central lOckinG'es « a saves x ame a e cows 2 e pow Al
FNUEOMLOGRE. « scvswen x exectzeim x serene a x iceman oa eet 41
Convenience key....... 0... cece eee e eee 46
Convenience opening and closing......... 53
Luggage compartment lid............... 49
Mechanically unlocking and locking....... 44
M@SSAG6S « see = « mews ¢ x eee so eee § Re 43
Remote control: keys. so cies es eee ae eee 46
Setting. ........ 0.0.02 eee eee eee eee 42
Vehicle-Kéy sce < » seu so sews + ¢ ees + vee 46
Central locking switch...............0005 43
Ceramic brakes....................00005 119
Certification... .....................00. 341
Changing light bulbs................... 332
Charging
refer to Power sourceS.........--0e ee eee 94
Charging clip
refer to Wall mount clip............... 145
Charging display................--0000- 135
Charging the battery
Mobilevdevices:: « « sissy 2 x xewe 2 2 eee 2 oo 252
SBia s+ sestos x comsene © x umsens & cuseane 1 w oeeosts a 212
Wireless ............ 0.0000 c cece eee 213
Charging time.......... 0... cee eee eee ee 132
Child safety lock
Climate control system controls inthe rear. 51
PoWer WING OWS cuse x 2 gece a 2 awe 4 & gaan as SL
Rear doorsten «ose <0 wane < oamstee « citenest = Si
Child-safety seats’... cscs v5 cme ve eco se one 88
Securing to the top tether anchor........ 92
Securing with a safety belt.............. 91
Securingiwith LATCH: « 2 ssse © « ccoswes v x nose 91
GIGANIING « crv: vo same ao arms « eee oo BA 310
Cleaning Alcantara.............-.00000. 313
Cleaning artificial leather............... 313

4N0012721BF

Interior lighting © ssc ve snes vo ene oo oe 62, 63
Interior MONITONING & & sis so ese oe eee oo 44
Intermittent mode (windshield wipers) ..... 66
International travels « wow» ss eau 4 a worms & 225
Internet
refer toCOnnect « sews «wien oo ewes eo oe 222
Internet radio
refer to Online radio.............. 246, 247
Intersection assistanteoes « scsi so sien oo one 185
TOMIZEPS < sce oo case w % esorm 6 > oom sw OTR 102
iPhone
refer to Audi music interface........... 252
J
JUMMPEStartin gions 6 o sess + a sane oo secu vo ave 323
K
ROY, cassis oe emia oo mee 6 © arenas oo ene F 8 41,45
Convenience opening and closing......... 53
Key replacement..........:ceeeee eens 45
Mechanical key icc 2 saunas s ave «2 emiee eee 45
Not recognized...............0 eee eae 108
PANIC button.....................0005 45
Replacing the battery.................. 47
Unlocking and locking...............005 46
Vehicle code... 2.0... 0... eee eee eee 45
Key user... 2... eee eee 39
Kick-down .. eee eee eee ee 112
L
Lane assist
refer to Lane departure warning......... 176
refer to Lane guidance.............45- 176
Lane departure warning...............-. 176
Cleaning the camera area.............. 311
Lane :qQuidanee:s « sssvise s ¢ siveine os eres ae wes 169
Laptimer’s sess « = new a ¢ eee + + neres oe nes 158
Laser lighting): ¢ sees ¢ ¢ sews se eee a e eee « 60
LaSerSeaniners » mew: + 2 meme 5 2 eeeS Xe a 151
Cleaning « « css «= sewn ee sone oo ae wo os 312
LATCH (securing child safety seats)......... 91
Leather care andcleaning............... 313
Legal information
License subscriptions................. 266
Software information...............05 266
Software licensesinis ss swcvsie « 0 sane © savers © 266
Version information.............-.00- 266
Legsupport....................000000. 75
License plate bracket................0.. 340
Lifting points (vehicle jack).............. 321
Light/rain sensor
Headlights .......... 6... cece eee eee 58
Intermittent mode (windshield wipers) .... 66
Lighting
Exterior’: = ess ss eee sy eee eo ee ee pees 58
FM GONIOR sesius ow susie 0 v aces 6 o eawaue 9 w aeneand wa 62
LIQHES « issssns so aeiwies ow mene + wan © ¥ MERITS oa 8 58
Lights on the charging port
refer to Charging display............... 135
Listening to music
referto Media................-.. 250, 253
Load... 2... eee 344
GOGALUSETS iin «a secnene « rains oo cuesems @ 2 osmeee wo « 38
Locking and unlocking
By remote control... 2.2... cece eee eee 46
Using the lock cylinder................. 44
With the convenience key............... 46
Low beam headlights.................... 58
LTE
refer to Exterior antenna.............. 212
Luggage compartment................-. 97
Power SOUrCES .... eee eee eee eee 94
Valet Parking’: s » asec: seme x : xeuu « t eae & 55
also refer to Luggage compartment...... 97
Luggage compartment lid................ $1
Closing button.............. 0000000005 49
Generalinformation...............0005 48
Mechanically unlocking...............-- 51
Opening. and Closing ecco s 0 sissies sss so 49
Opening and closing with foot motion..... 50
Opening from the inside in an emergency.. 51
Power opening and closing.............. 49
Lumbar’supports sisicn se esova 2 maces eo a 71,74
M
Maintenances. « cmos s 2 eos 9 2 aes 4 e eee 338
Maintenance intervals.................. 287
Malfunction Indicator Lamp (MIL)........ 274
Maneuver assist........-..0 0000s ee eens 207
Manually releasing the charging connector. 137
Manually releasing the charging port door.. 137
351

Index

Pollutant filter. ccs 2 2 comes 2 wee 2 eure 100
Power closing (doors) « . oiccs as saves oe ones ae 41
Power Meter: esas ss mean se eee se owas 12, 15
PoWerSOUICeS. ss eiws eevee ee wees ee 94,252
Power window malfunction............... 52
Power Windows ....... 0.0. e cee eee eens 52
MAlfUNCtION . ecaea ware & s ware o ¥ ws 52,53
Predictive Controls « was « « emws ¢ ¢ eee ¢ 2 we 170
Predictive messages.............4. 111,165
pre sense
refer to Audi presense................ 178
Presentation mode............ee eee aee 241
Presets
RadiGiccns « 2 mee oo came oo oe oo see 8 245
Presets list
refer to Presets... 0.0... cece eee eee 245
Pressure
Tire pressure monitoring system........ 308
Nicer ee eee eee ee 299
Profile picture... 2.2... eee eee eee 38
Protecting............... 0.0... e eee 312
Pyrotechnic elements................0- 338
Q
quattro... eee eee 128
Selective wheel torque control.......... 129
Quick charging.................0e ee eee 131
R
Radio... 2... eee eee eee 242
Radid t@Xtxx « = xces « s nomen 2 e weme so eee 246
Station lists « e sswess s © waves 6 2 were 6 & eens 242
Radio communications equipment........ 340
Radio’ GquipMentens « aes x 2 neue 4 + nwa s & 340
Radio Standards Specification (RSS)....... 341
Railcarrier... 2.2... eee eee eee eee 125
Rain/light sensor
HeadlightSiens + o awn < gauus s gen 5 3 aoe o 58
Intermittent mode (windshield wipers).... 66
Random
refer to Shuffle.................0000. 255
RANGES. « crn « x examen # # somes A eee oo eT wo 16
RaNGeHNONitOl's + wcciene © vecwees a vues wo wmemne 116
Range potential «0... 2 seve ee oven ee ene 116
Ratige (Clectric)icn + » sews # x game 2 eam o we 238
354
Reading lights: <2 csi Rear cross-traffic assist . cic... ci ae sees 195
Rear fog lights + mcus si sees se sees se eee ve 58
Rear lid
refer to Luggage compartment lid........ 49
Rear Seat Remote ovis « o ssiwca oo wea so wena 26
Device setup .. 0... 0... eee eee eee eee 27
Legalinformation.................005 266
Menusiandisymbols « sce ev aime s 2 ann sa 28
Operating. ........ 00... eee eee eee 18, 28
Software information................. 266
Rear Seats... 0... cece 74
Rear shelf
refer to Storage area behind the rear head
PESERAINES css ao areeine & aseoies @ 8 arom Te oneSe 96
Rearview: Cameras: ss sivas i sew sa eens es 191
Rear window defogger...............555 102
REAR (climate control system) ........... 101
Recirculation mode..............-..05- 102
Reclining position. .......... 0c eee eee eee 76
Reclining seat system. ...........0.-000. 76
REGUPCFALION srccces + x wares ao mecnene ao onmenee 16,114
RefrigerantiOi serie © = scoscs « 2 sae ¥ veneer © He 344
Refrigerator
Cleaning ....... 2... cece eee eee eee 314
Refieling?. x 2 ccs: wx snes 2 smmnene an apipene 2 8 8 270
Remote access authorization (key user)..... 39
Remote control
Garage door opener..........--.000000- 55
Remotercontrol-key*s siccse = a ainnne «a cus 6 ae 45
Convenience opening and closing......... 53
Key replacement.........-....--0000-5 45
LED 2 iviseos 4 & ori & oessye a 8 tenia © W dassiice 6 8 ais 47
PANIC function............ 0.000 e ee eee 45
Replacing the battery.................. 47
Unlocking and locking............-...-- 46
also refer to Vehicle key...........0000. 45
Remote controlled parking.............. 202
Remote park assist plus
refer to Remote controlled parking...... 202
Remote park assist plus with garage function
refer to Remote controlled parking...... 202
Removing the caps (wheel bolts)......... 320
Repairs... 2.2.6... eee eee eee 338
Replacement key...........0 0c see e eee 45
Replacement parts...............000005 340

4N0012721BF
Index

Tightening specification
Wheel bolts ......... 0... c cece eee 323
Tightening specification (wheel bolts) ..... 323
THING sscsnirs so secenis w sneer ow emmers 3m etme wo a 16
Timer (high-voltage battery)............. 136
tiptronic
refer to Manual shifting............... 111
Tire Mobility System (tire repair set)....... 317
THROS cesses x oi ores wu enews woo cranes + areas aw SK 289
Loose wheel warning...........0+e00ee 304
Low-profile tires.............02..000- 306
REPalnisetis sccm 2 3 mow @ & wemew & wasn ao one 317
Replacing.......... 0... c eee eee eee 319
SOPVICE lif@ns = s eee ¢ x eae 3 vawed HawH 298
TIRE PKESSUNE iiss so somes oo ase ov Reem we woKs 299
Tire pressure monitoring system.... 307, 308
Tire pressure table...........-..00000- 300
Tire pressure (trailer mode)............ 147
Treadwear indicators... . 0.0.6.0 ee 298
Unidirectional..................0. 291, 322
Uniform tire quality grading............ 306
Tires and wheels
Glossary of tire and loading terminology .. 292

Tires and vehicle load limits............ 302
Toll Module
refer to Integrated Toll Module......... 161
oo) Ca 317
Tool tipS.... 2... eee eee eee eee ee 20
Top tether anchor (securing the child safety
SGat) ¢ suche 7 § See od SOBRE Fo See sD ed 92
Touch display
Adjusting feedback............---..00-5 20
QPeKating « « ssessie 2 x care oo cea o seauew we > were 18
TOWING §: & & sxise @ & aves @ & aeawein & o wean @ & waK 325
TOWING OOP sves « & wave x e waves ¢ @ wow 2 2 327
Towing protection monitoring............. 44
TPMS
Tire pressure monitoring system........ 308
Traffic incidents
refer to Online traffic information....... 239
Traffic information « sic. <6 cane v weve wo eee 240
Online traffic information.............. 239
Traffic light information................ 157
Traffic sign recognition................. 155
Traffic SiQMScsic 2% arcu oa axeueve x a oeeneve w+ oer 158
Trailer mode
Air suspension ..........000ec cence eee 147
Trailer towing...........-.. cee eee eee eee 147
Tongue weight............eeceeeeeeee 147
Trailer load « « seas + + sewn 2 2 ees vo ew ve 147
TUNM@ASSISE « esc s sree: & s eevem ¢ 2 ene s x Be 181
Turtsignals = sess <2 wee = 2 eee s = HeieR gx oes 59
U
Uniform tire quality grading............. 306
Unlocking and locking................5-5 41
By remote control.............--e0eeee 46
Using the lock cylinder..............005 44
With Audi connect vehicle control........ 47
With the central locking switch.......... 43
With the convenience key............... 46
Update (software) ........ 0. cece ee eee 264
Upright positions « scsi se ess s cows s 6 vere 76
USB
Adapters « s escciis « eoasane 2 wasire a eases @ 2% 212
USB charging ports. « secs ¢ « sores & o arenes ¥ « ave 94
USB drive
Supported types/formats.............. 258
USB stick
refer to Audi music interface........... 252
Users
LOCALUSEtS sas x s anwe ¢ § earee FE Sates GS eae 38
MYAUGPUSEDSiscs: «osm oo ees oo een eo oer 38
Using residual heat.................-.. 103
V
Valet parking sxc ¢ s exes ze wewu 2 e owen 2 ee 55
Vanity MOF ccs < = seas + nen & ¥ axes ¢ ¢ Rees 65
Vehicle
Care/cleaning . es: : sesee s seeeaseewnas 310
DIMeNSIONS asco « 2 meses « 2 msn + 6 oom @ Ho 343
Identification data................... 343
Out Of S@FVICE cares sy ces sv ees ve eee ee 316
RaiSigss « cassis x 0 senxie 9 v aaeniue 6 9 cxsee @ nave 321.
Starting.......... 06. c eee ee eee eee 107
TRANS POFt wes s x eee su eeee o Bee 2 REE 125
Unlocking and locking............-...-- 46
Vehicle:car@ssiox «msn os ean oo wenn = # oes 310
Vehicle control services..............--- 224
Vehicle data label............. eee eee ee 343
Vehicle identification number............ 343

Index


Vehicle jacks. « sie sc emcee e eww oe em ves 317
Lifting points...... 2.0.0... eee eee eee 321
Tire change Mode.... 1... eee eee sees 319
VehIClE Keys ¢ « sas x = heen ¢ o hake oP eee 41,45
Vehicle Sound... . 6... cece eee eee eee 116
Vehicle start systeM.... 2.2.0.2... eee 118
Vehicle toolkit... 0.0... 0... eee eee eee 317
VeMEILAtIOMS, « 6 cess « cnennic = 1 cena a @ ammo wa 100
VIEW DUBE OMI + 3 seco © x saouawe 2 x cameo osama oo 13
Voiceriiaibs «2 viciine 2 x owas eo snvem 2 x amin 0 3 a 217
Voice recognition system ..............065 34
BxXHOE Maly escse = mucana we wweanan x execone 6 x ena 35
Operating ....... 0... ccc eee eee eee ee 34
WwW
Wall mount clip...........0... ce eee eee 145
Warning lights
refer to Indicator lights.................. 7
Washing matte finish paint.............. 310
Wave band
refer to Frequency band............... 242
Weights ........... 0.0 cece eee eee ee 344
Wheel bolts............ 000 c cece 304
ANti-Cheft cas s nuwa & s Been & + eRS oe Sew 320
Tightening specification............... 323
Wheels x isasis a i snniss o a nauasa s & aninass wo eomnene @ 289
Cleaning 312
Glossary of tire and loading terminology.. 292
Loose wheel warning.................. 304
REPIAGIG s sxannce » seanens oo eee co sien oe o ete 319
Tire pressure monitoring system........ 308
Tires and vehicle load limits............ 302
Wheel wrench’: « seas: s + gem « x sewn 2 2 seme 317
Wi-Fi
Hotspot:settings:s. ss wie a 6 owen ae aie a 225
Using ahotspot................--000- 223
Wild animal recognition................ 159
Window and mirror heating............. 105
Windows
Child safety lock.............02-000000- 51
Cleaning and removingice............. 312
Convenience opening and closing......... 53
Defrosting ........-. 600 c eee eee eee 102
Opening and closing................... 52
POWEPWINdOWSins « 2 caves x s waves 4s eaure 4 es 52
358
Windshield
Cleaning..... 22.2... cece eee eee eee 66
also refer to Windshield................ 66
Windshield washer system..........- 66, 287
Reservoir capacityies « + sass +o wesw + 3 meen 344
Windshield wipers.................00-0- 66
Winter operation
Auxiliary climate control............... 104
Car washes ....... 0.0.00 cece cece 310
COGLIFG SYSTEM: « 2 wees s x eee ss meee ese 281
Defrosting the windows............... 102
Rear window defogger................ 102
Removing ice from windows............ 312
Seat heating. « = scr. sa wee. a eee @ © wees 102
Snow chains............ 00sec eens 305
Steering wheel heating................ 104
Surface heating «wees «sees se ewes a 4 ear 103
THRCSiis so ceontens 6 sccrees +o onemeite aw oman © 9 oom 305
Vehicle battery (12 Volt)............... 285
Windshield washer system............. 287
WINEEPEIRES 2 osu 5 ¢ ean so mem a yeaa ee 305
Wireless Apple CarPlay
refer to Audi smartphone interface...... 261
Wireless charging...............+-+05- 213