2021 AUDI A8 door lock

4N0012721BF
Checking and Filling

Fuel filler door emergency release
Applies to: vehicles with manual fuel filler door release

If the central locking system malfunctions, the
fuel filler door can be unlocked manually.



Fig. 177 Right cover in the luggage compartment: remov-
ing the cover



Fig. 178 Luggage compartment: fuel filler door emergency
release
The emergency opening mechanism is located
behind the right cover in the luggage compart-
ment.
> Remove the screwdriver from the vehicle tool
kit > page 317.
> Carefully insert the flat side of the screwdriver
from below into the center of the top slot in the
cover > fig. 177.
> Use the screwdriver to pull the cover toward the
center of the vehicle and remove the cover.
> To unlock the fuel filler door, loosen the red
loop from the retainer and then pull on the
loop carefully > fig. 178 > ©.
> Press on the left side of the fuel filler door to
open it > page 271, fig. 175.
® Note
Only pull on the loop until you feel resistance.
You
will not hear it release. If you continue to
pull, you could damage the emergency re-
lease mechanism.
@ Tips
Applies to: vehicles with plug-in hybrid drive
— The tank will not be vented if the emergency
release function was used on the fuel filler
door. You can only fill a small amount of
fuel in the tank. Fill only until the fuel pump
nozzle turns off for the first time. Drive to
an authorized Audi dealer or authorized
Audi Service Facility immediately to have
the malfunction corrected.
— Pressure can escape if you open the tank cap
after using the emergency release. This can
create noises.
Emissions control
system
General information
ZA\ WARNING
The temperature of the exhaust system is
high, both when driving and after stopping
the engine.
— Never touch the exhaust tail pipes once they
have
become hot. This could result in burns.
— Do not park your vehicle over flammable
materials such as grass or leaves because
the high temperature of the emissions sys-
tem could start a fire.
— Do not apply underbody protectant in the
exhaust system area, because this increases
the risk of fire.
Catalytic converter
Observe the safety precautions > page 273, Gen-
eral information.


The vehicle may only be driven with unleaded
gasoline, or the catalytic converter will be de-
stroyed.
Never drive until the tank is completely empty.
The irregular supply of fuel that results from that
can cause engine misfires. Uncombusted fuel
could enter the exhaust system, which could >
273

Checking and Filling


Opening and closing the hood
The hood is released from inside the vehicle.



RAZ-0016|


Fig. 180 Unlocked hood: lever
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
> Applies to: vehicles with plug-in hybrid drive:
Switch the ignition off before releasing the
hood so that the gasoline engine does not start
automatically.
> With the door open, pull the lever <> below
the instrument panel in the direction of the ar-
row > fig. 179.


D_ The & symbol is not available in all countries.
276
>» Raise the hood slightly > page 274.
> Press the lever > fig. 180 in the direction of the
arrow. This releases the hooks.
> Open the hood.
Closing the hood
> Push the hood down until you override the
force of the strut.
> Let the hood fall lightly into the latch. Do not
press it in. > /\.
Messages
B Warning! Hood is not locked. Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop im-
mediately and close the hood.

Z\ WARNING
— Never open the hood when there is steam or
coolant escaping from the engine compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
— For safety reasons, the hood must always be
latched securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ed.
— If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.

4N0012721BF
Fuses and bulbs


This can cause damage to the electrical sys-
tem and increases the risk of fire.

Fuse panel (2) (brown)


() Note
If a new fuse burns out again shortly after you
have installed it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili-
ty.
@ Tips
— The following table does not list fuse loca-
tions that are not used.
— Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.
Fuse assignment - left footwell
Fig. 209 Left footwell: fuse panel with plastic clip

Fuse panel @ (brown)
No. | Equipment

Engine ignition coils

Engine start, electric drive clutch

Windshield wiper control module

Left headlight electronics


Ul
WIN)
eR
Climate control system blower

6 | Instrument panel

Windshield wipers

Zz
8 |High-voltage heating, compressor
9 Panoramic glass roof

Fuse panel (2) (black)
No. | Equipment

1 |Engine mount

N Left rear door control module

Windshield washer system/headlight
washer system




4 |Right headlight electronics
5 | Front seat heating
6 |Right rear door control module
7 |Sockets
8 | Left front door control module
9 |Parking heater
Fuse panel @) (red)

No. | Equipment

Anti-theft alarm system

Engine control module

Horn

Parking brake

Diagnostic interface

Roof electronics control module

WOlLOINI
DI
WIN]
rR
Driver assistance systems control module

10 | Airbag control module

Electronic Stabilization Control (ESC), An-
LL
ti-Lock Braking System (ABS)

Rear climate control unit, diagnostic con-
12
nector, light/rain sensor


Climate control system, vehicle electrical
13
system control module

14 | Right front door control module

Climate control system compressor, vehi-
15
cle electrical system control module

16 | Brake system pressure reservoir

Fuse panel (@) (black)

No. | Equipment


1 |Engine components

329

4N0012721BF
Fuses and bulbs





















































Fuse panel () (black) Fuse panel @) (brown)
Luggage compartment lid central locking, 15 |Left rear seat adjustment
11 | fuel filler door, sunshade, luggage com- Front belt tensioner on front passenger's
partment cover 16 side
12 | Luggage compartment lid control module
— Fuse panel (4) (black)
Fuse panel (2) (red) No. | Equipment
No. | Equipment Seat ventilation, rear seat heating, rear-
1 | Rear climate control system blower 1 |view mirror, refrigerator, diagnostic con-
2 | Exterior antenna nection
3 | Exhaust treatment, sound actuator 2 | Gateway control module (communication)
4 |Rear climate control system control panel 3 [Sound actuator
5 | Right trailer hitch light 4 |Transmission heating valve
6 |Trailer hitch positioning motor 5 |Engine start, electric drive
7 |Trailer hitch release 7 |Active accelerator pedal
8 | Left trailer hitch light 8 | Night vision assist, active suspension
9 |Trailer hitch socket 9 _|Adaptive cruise assist
10 |Allroad sport differential 1 Intersection assistant, driver assist sys-
11 | Exhaust treatment tems, radar systems, camera systems
12 |48 V drivetrain generator 2 || Exteriorsoundigenerator
13 | USB input
Fuse panel (3) (brown) 14 [Right headlight
No. | Equipment 15 |Left headlight
1 |Driver assistance systems control module :
2 |Rear Audi phone box Fuse panel () (red)
3 | Rear seat adjustment No:.| Equipment
4 |Side assist 1 | Active suspension
5 |Sereensinthe rear 2 |Service disconnect switch
6 |Tire pressure monitoring system 3_|Refrigerator
7 [Emergency call system 4 | Electric drive system
Auxiliary heating radio receiver, tank mod- 5 |/Brake-system
8 ule 6 | High-voltage battery water pump
9 | Automatic transmission selector lever 7 |Auxiliary climate control
0 TV tuner, data exchange and telematics 8 |Climate control system compressor
control module 9 |Auxiliary battery control module
rT Convenience access and start authoriza- 10 | High-voltage battery
tion control module 11 | High-voltage charger
12 | Garage door opener 14 | Thermal management
13 | Rearview camera, peripheral cameras 15 | Thermomanagement control module
Convenience system control module, right -
14 | Vil light Fuse panel 6) (white)
No. | Equipment
1 |Rear center armrest heating

331

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

Detailsts » swccu © x wweove ox seivean a x seme 2 2 wees 233)
Determining correct load limit........... 303
Digital compass ..............0 eee eee 68
DIMENSIONS): « : wees « « wees sg eas ge eR ae 343
Dimming the exterior mirrors............. 64
Dimming the rearview mirror............. 64
Directory .... 2... eee cee eee eee 216
BUSINGSS;Card wen = waam 2 2 weien x > mane a o 216
SeOttiNQS: css « serene ¢ v suewas ev ere Sw eee & 219
Display
CLEARTITG Ae = «: susnens a oi urea ao cieeie « 0) anetine 0 i 313
DispOSalecie «+ sssoee a 0 ensues wo mezess vv arate @ 338
DistamC@ enc o «vse ov wasen a a oawe 2 a wm ¥ os 16
Distance warning sews so ssc + awson 9 & secon 175
Doors
Ghildisafiety lOGk seccas x 0 neue x cnemen « 0 aseasin 3 51
Door contact switch...............200-. 62
Mechanically unlocking and locking....... 44
Power closing/closing aid............... 41
Driver information system................ 13
Drives
refer to Media...............0-4- 250, 253
Drive select
refer to Audi drive select............... 124
Drive systeM.... 0.0... ee eee eee eee 114, 118
Audi drive select .............0.000008 124
Driving down hills.............2.-00 eee 122
Driving program........ see e eens 110,174
Driving through water.................. 122
Drivingueiime’, so sxeusie «i coissen © a onmvire © eaten wo 2 16
Driving tips
Driving through water...............-- 122
Efficient driving : see: sy esse ss ores 5 ces 116
Uphill and downhill................... 122
Driving UpHillsss « » sess x = wavs a & saws 2 5 wee 122
DVDidfivein: « « saves 2 = cms 5 2 ewes & ese Fe 251
Dynamic all-wheel steering.............. 127
E
| 220
S@CtiNGS news « woes © s woos 4 & ween & 3 rane 220
EDL
refer to Electronic Differential Lock...... 129
EDR
refer to Event Data Recorder (EDR)...... 333
348
Efficiency assiStccc «sows 6 = meee ow eeaee ¥ o 164
Predictive control...............00005 170
Electrical system ..... 0.0... 0. eee eee ee 284
Electric range... . 2... eee eee eee 238
Electromechanical parking brake......... 121
Electronic Differential Lock.............. 129
Electronic immobilizer sss. 5 s een so mayen 4 os 46
Electronic Stabilization Control........... 129
Embedded SIM card s « saga « ¢ secon ae was ¢ 3 223
Emergency assist. ..........00-.0ee eee 186
Emergency assistance.................. 317
Emergency braking function............. 121
Emergency call...............-00. 218, 227
Emergency flashers.............---000-- 61
Emergency Mode w icies saw es cee ee een 112
Emergency operation
DOORS iss secwous « os exewans = x caamene = exanems = > wR & = 44
Fuel filler door... ..... 00... eee eee eee 273
Luggage compartment lid............... 51
Panoramic:glass rOOF sre. 6 2 sree «2 severe o oe 54
Emissions control system.........-.0005 273
Eneroy COnsUMMersios se neww + wen a s eee a sg 16
Enéroy flow display’: sce: ss swam + s aes vee 115
Energy management............--...0- 117
Energy recovery.............0..0.0000. 114
Engine
Breakinigniti's « seus « segues x ¢ awe 3 eee Ze 114
Coolant. ascvons vs acne wo awcvces 0 a semana w stamese 281
Emergency stop.......--..00-.ee eee 107
JUMP StACING « ¢ gems + a eee gy eS 8s ee 323
Start/Stop system « secs so sews oe enews ¥ oo 117
Starting/stopping.............0.-000 107
Engine braking effect
refer to Recuperation................. 114
Engine compartment
Opening and closing the hood.......... 276
OVERVIEW « cscs +o soeces «a sserens wo aewens © a ow 277
Safety precautions..............0000 0 274
Engine oil
AGING « xsins < = cevan ¢ § Sates 7 5 Ee FS ESR 277
CHANGING ie: @ 2 ween 2s eee sa ee oe ewe 2 280
Checking oil level... .. 0... . cee ee eee eee 277
Consumption....................200- 277
Indicator lights. 5 ws s ewes » s wwe as eens 278
Replacement interval................. 287
Temperature display................0-. 1s

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

4N0012721BF
Index

Online services
refer toconnect.......... cece eee eee 222
Online system update.................. 264
Online traffic information............... 239
OPeniing sc» « swesius © o cwcwew w eeewesens vt euswens we eaewoue 41
Automatic luggage compartment lid...... 49
Convenience opening...............0405. 53
Fuel-fillerdoor's « s sve ¢ « weeoa ¢ 0 wanes ¥ ane 271
HOOd .... cece eee 276
Luggage compartment lid............... 49
Luggage compartment lid with foot motion . 50
Panoramic glass roof..............2000. 53
Rear window sunshade................. 55
Surishaden(root) « scons «a accuse 2 x emma oo ose 53
Sunshade (windows) ..............00005 52
Windows ......... 20. eee eee eee 52
Opening and closing
refer to Unlocking and locking........ 41, 46
Opening the charging port door.......... 134
Operating
Head-up display’: « « seis ie gees + eres + eo 33
Instrumenticluste tienes» « secre a sangse « = snees T3'
Multifunction steering wheel............ 13
Multi Media Interface............... 18,21
Rear Seat Remote..............0005 18, 28
Text input... 6.2... eee eee eee eee 25
Towchdisplay's = 2 sews « s sews & «ee ¢ eee 2 18
Voice recognition system.............-. 34
Operating¢mModes « sein «sows + wae w ¥ wae 114
Optional equipment number............. 343
Options
Medias a scasss i a susaas « o: anmwons 4 nmnuans 4 aseatas 257
Radio... ieee eee 248
Outside noise... eee eee eee eee 116
Overview: (GOCKpit):. « swine o « creme a simone « 0 scene 6
P
PaiMtCOde la . o sccvam aw seauewe & avevane & o voeaun a os 343
Paintdamagess « « wseas 6 www ve sees & o renee 312
PANIC BUGLON': ¢ mess ss wenu s y eens « ¥ ene 5 2 45
PANIG fUNCtION Se: = = sews = ¢ aeupe ¢ o ee 3 eee 45
Panoramic glass roof.......... eee ee eee 53:
Convenience opening and closing......... 53
Emergency closing............-..20-005 54
Quick opening and closing.............. 54
Parental control
DVD... oes 257
Rear Séat REMOtes s acaw 5 « meme ay wens 2 oe 28
Parkassist plUS « scas + < xan 4 e eee eRe 198
Parking... ... cece cece eee e eee 108
Parking aid... . 1.0... eee cece eee eee eee 188
Adjusting the volume................. 190
Automatic activation.................. 189
Cleaning the sensors and camera........ 311
Deactivating rear cross-traffic assist .... . 195
Parkcassist:plusiac ss scoaa «waa a 3 wien ooo 198
Parking aid plus...............02-.00. 188
Parking space search.................. 196
Peripheral
cameras............-0000-- 191
REARVICWHGAIMIEF Alcan x exessene so acenece a 0 eonsere 191
Remote controlled parking............. 202
Switching off maneuver assist.......... 208
Parking and maneuvering.............-- 188
Parking brake
refer to Electromechanical parking brake. 121
Parking heater
refer to Auxiliary climate control........ 104
Parking light Sie 2 o ccs + venues eo rece eo eoeneee 58
Parking lock emergency release.......... 112
Pass=through cscs x ¢ ogee y ees yo ewes so oe 98
Pédalsteius + 2 qeme = © aime < Roe 5 BURN FE HORE 111
Pedestrian detection..............-.00. 159
Perchlorate. ... 2.2.0.0... cece eee eee eee 338
Peripheral cameras............--0000-- 191
Phone
Connecting a second mobile device...... 210
Disconnecting a mobile device.......... 211
SO TEIIGS ssenosw 2 0 cmemeioe « oxsuemen © sitanems a oexints 218
Phonebook
refer to Directory............002--005- 216
PIN
A-digit myAudi PIN...............000488 38
Protection wssine s+ sce ww inne 6 6 anrsass ww anes 39
Playback (media) ..... 0... cess eee eee eee 253
Plug-inmhybrid drive’s « sss x x cages x « emcee a 114
Coolant.......... 00.0. e eee eee 281, 282
Power meter...........0 cece eee eee 15
Plug-in hybrid mode.................0.. 114
Podcast
refer to Online radio.............. 246, 247
Polishing ....... 0... c cece cece 312
353