2021 AUDI A8 open gas tank

Checking and Filling

corrosion damage and damage to plastic or
rubber components in the fuel system.
— Do not use gasoline that does not meet the
specifications.
— If you are unable to find out if a specific gas-
oline mixture meets the specifications, ask
the gas station operator or their fuel suppli-
er.
— Do not use any gasoline mixture whose
composition cannot be identified.
— Audi does not assume any responsibility for
damage to the fuel system or for perform-
ance problems caused by using gasoline
mixtures different from those specified.
This type of damage also does not fall under
the New Vehicle Limited Warranty or under
the emissions control system warranty.
— If you notice a higher fuel consumption or
poor handling or performance problems due
to such gasoline mixtures, Audi recom-
mends fueling with unblended gasoline.
Gasoline additives
An important issue for many automobile manu-
facturers is combustion residue in the engine
that results from the use of certain fuels.
Although types of gasoline differ depending on
the manufacturer, there are similarities. Certain
substances in the gasoline may cause deposits in
the engine. Additives in the gasoline that should
keep the engine and fuel system clean do not all
function equally.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
If you use incorrect fuels over a long period of
time, the maximum engine performance may be
impaired by combustion residue.
@) Note
— Damage or malfunctions caused by the use
of incorrect types of gasoline are not cov-
ered by the New Vehicle Limited Warranty.
— Only gasoline additives that have been ap-
proved by Audi may be used.
270
Refueling
Messages
A Tank system: malfunction! Please contact
Service
There is a malfunction in the fuel tank system.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
Messages
Applies to: vehicles with plug-in hybrid drive
A Fuel filler door: malfunction! Unlock fuel
filler door manually. See owner's manual
There is a malfunction. You must manually un-
lock the fuel filler door > page 273.
Al Warning! Vehicle performance may be limit-
ed
The fuel tank is almost empty. You must antici-
pate a significant power loss. Refuel immediate-
ly.
& Please refuel and charge battery. Total
range: x mi (km)
or
f& Tank system: please refuel immediately and
charge battery. Total range: x mi (km)
If this indicator light turns on and this message
appears, refuel as soon as possible. Otherwise,
the high-voltage battery is drained > page 131.
AY Fuel filler door open. Please press button
again to refuel
Fueling is possible for a little while after pressing
the G) button. You must press the A button
again if the time limit is exceeded.

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

4N0012721BF
Index

Engine sound
Audi drive select.......... 0.00 eee eee 124
Engine start system..................0. 108
Engine stop
refer to Start/Stop system............. 117
Entry/exit lighting. ..............0eeee ee 61
Entry assistance.................-0 020s 73
also refer to Exit assistance............. 73
Environment
Unleaded gasoline................200. 269
ES@
refer to Electronic Stabilization Control... 129
ESG:SPOltis ss wees es serow so ens x e ewe ze 130
eSIM
refer to Embedded SIM card............ 223
Event Data Recorder (EDR).............. 333
EVimOde » wes s pasa 3 wuss os wee 6 = see 5 115
EXit:aSSiStani@Giis « x comm « < ems « RGERS eS 73
Exit Warning’: « s sos © ¢ wea © i eews oy Rees 184
Exterior antenna...............0..000. 212
Exterior lighting................0022-00. 58
Exterior mirrors... ........0..0.00000005 64
FOLGING'SELtINGSi: + x sams ¢ s sue x eee Ya: 42
External voice operation..............0.5 35
F
Factory default settings
Multi Media Interface................. 264
Factory settings
Rear:Seat: Remote .. seices és iiss oo ones oo 263
Fast rOUtC sess + eeu 2 2 gow sv cere oe ee 231
Favorites: < 2 vw ¢ 2 esis < ¢ dees + enews oon 22
Bluetooth « « scons 2 a swavwne x 2 awaene © event we © oe 266
Navigation... ........ 00. c cece eee eee 232
Telephoti@s:s: = « aae¢ = oven & s seem os ree 215
Federal Communications Commission (FCC) . 341
File formats (media drives).............. 258
Fog (windows) ...........00ee ee ee ee eee 102
Folding
tray table............0....000 00. 96
FOOCHEATIAG sioncase x 0 veces: + 6 asians «a seman © Hane 102
Footrests initeat's « + sesscea 0 2 omen a 2 own 9 w one 77
Footwell temperature.................. 103
For the sake of the environment
Disposing of engine oil................ 280
FUGUING:: < = sews 2 2 wows x o eee ge eee Fo ee 271
L@AKS boxe smansos x samen ow menos we aun a 275
FAQKaNG@rsces 2 o sce 2 o sees oo sR oo 102, 103
Free text search
Mediai. 2 2 sssxass a 0 sananis wo oreness 6 H emeneen & a1 ene 257
Radio... 2.2.2... eee eee eee eee eee 245
also refer to Intelligent search.......... 231
Freeze protection
COOLANE scsnis av aaneiss 6 4 insunse aw aves & 8 eswIEHE 281
Windshield washer system............. 287
Frequency band...............--000 ee 242
also refer to Frequency band........... 242
Front center armrest...............0.00. 73
Front collision warning
refer to Audi pre sense front............ 178
Front passenger's seat adjustment
R@ar : saws ¢ + eae ¢ » ews so meee st se es oe 75
Front passenger’s seat adjustment
PrOmtis 2 2 soveas 2 a ravens oe awe 2 a mee 2 x eNO 73
Rear... eee eee 73
Front wiper blades
Changing................0.00 ee eee eee 67
ClOANiNG’s « = seas a o ses + o sews so ews ev Ge 67
FUl@ls aguas 3 = imue x 2 eae ¢ EEE FE BEE ea 269
INAGIEIVE Se cecscics ow casi 2 ws amano © ctawais We oe 270
Current consumption...............000. 16
Fuel QaUg@ asx ¢ < oes « v ness sp rere se ee 12
Fueltankicapacity’ « s scsi «6 meow © waco « 344
Gasoline. 0.1... cece eee 269
Reducing fuel consumption............ 116
Fueling
Fuel filler GOOF ox « « cawy 6 ewes 2s yews ss 2 271,
Fuel filler door emergency release....... 273
Fuel tank capacity... ...... eee eee eee 344
G
Garage door opener............--000000- 55
Garment hooks ..............0000eee eee 97
GaSOL Meise ue a sxsweme 1 = anemaine = 5 onetime ws cemntene fe 3 269
Additives... 0.0.0.0... cc cece eee ee eee 270
Gasoline MIRCUNE wee 2» yew 2 o sews + same 269
GAWR
refer to Gross Axle Weight Rating (GAWR) . 344
GeaTsis « o scsn +s men 2 2 neon 2 rece Y oe 349