2016 AUDI S8 fuel pump

Fuel and Refueling
Fuel and Refueling
Gasoline
Fuel supply
Applies to: vehicles with gaso line engine
Using the right fuel helps keep the environment
clean and prevents engine damage.
Fuel recommendation
The fuel recommended for your vehicle is unlead­
ed premium
grade gasoline . Audi recommends
using TOP TIER Detergent Gasoline with a mini­
mum octane rating of 91 AKI (95 RON). For more
information on TOP TIER Detergent Gasoline,
p lea se go to the offic ial website
(www.toptiergas .com).
The recommended gasoline octane rating for
your engine can also be found on a label located
on the ins ide of the fuel filler flap . This rating
may be specified as AKI or RON.
Your vehicle may also be operated using unlead­
ed regular gasoline with a minimum octane rat­
ing of 87 AKl/91 RON . However, using 87 AKI/91
RON octane fuel wil l slightly reduce engine per­
formance.
Use unleaded gasoline only. Unleaded gasoline
is availab le throughout the USA, Canada, and in
most European countries . We recommend that
you do not take your vehicle to areas or countries
where un leaded gaso line may not be available.
For more information on refueling your vehicle,
see
¢ page 214.
Octane rating
Octane rating indicates a gasoline's ability to re­
sist engine damaging "knock" caused by prema­
ture ignit ion and detonation . Therefore, buying
the correct grade of gasoline is very important to
he lp prevent possible engine damage and a loss
of eng ine performance.
Gasoline most commonly used in the United
States and Canada has the following octane rat­
i n gs that can usually be found on the filler pump:
- Premium Grade: 91 - 96 AKI
212
- Regular Grade: 87 - 90 AKI
Explanation of the abbreviations:
AKI = Anti Knock Index = (R +M)/2 = (RON +MON)/
2
RON = Research Octane Number
MON= Motor Octane Number.
{[) Note
-Do not use any fuel with octane ratings low­
er than 87 AKI or 91 RON otherwise expen­
sive engine damage wi ll occur .
- Do
not use leaded gasoline. The use of lead­
ed gasoline will severely damage your vehi­
cle's catalytic converter and its ability to
control exhaust emissions .
Blended gasoline
Applies to: vehicles with gasoline engine
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al­
cohol or MTBE (commonly referred to as oxygen ­
ates) if the blended mixture meets the following
criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
-Anti -knock index must be 87 AKI or h igher.
- Blend must contain no more than 3% metha-
nol.
- Blend must contain more than 2% co-solvents.
Blend of gasoline and ethanol (grain alcohol or
ethyl alcohol)
- Anti-knock index must be 87 AKI or h igher .
- Blend must not contain more than 15% etha-
nol.
Blend of gasoline and MTBE
-Anti-knock index must be 87 AK I or higher .
- Blend must contain not mo re than 1S% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform es­
pecially well for winter or summer dr iv ing . Dur-
i ng seasonal change-over, we suggest that you .,..

fill up at busy gas st ations where the season al
adjustment is more likely to be made in time .
(D Note
-Me thanol f uels which do not mee t these re­
quirements may ca use corros ion and dam­
age to plastic and rubber components in the
fuel system .
- Do not use fuels that fai l to meet the speci­
fied criter ia in this chapter.
- If you are unable to determine whether or not a particular fuel blend meets the speci­
ficat ions, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identif ied.
- Fuel system damage and performance prob­
lems resulting from the use of fue ls differ­
ent from those specified are not the respon­
s ibility of Audi and are not covered under
the New Veh icle or the Emiss ion Control
System Wa rrant ies.
- If you experience a loss of fue l economy or
driveability and performance prob lems due
to the use of one of these fuel b lends, we
recommend that you switch to unblended
fuel.
Gasoline additives
Applies to: vehicles with gasol ine engine
A majo r concern among many au to manufactur ­
ers is carbon deposit build- up caused by the type
of gasoline yo u use.
A lthough gasoline grades d iffer from one manu­
f a cturer to ano ther, they have cer tain things in
common . A ll gasoline grades contain substances
that can cause deposits to collect on vita l engine
pa rts, such as fue l injectors and intake valves . Al ­
though most gaso line brands include additives to
keep engine and fuel systems clean, they are not
equally effective.
Aud i recommends using TOP TIER Detergent Gas­
oline. For more informat ion on TOP TIER Deter­
gent Gasoline, please go to the official website (www.toptiergas .com) .
Fuel and R efueling
After an extended period o f using inadeq uate
fuels, carbon deposit bui ld-ups can rob your en­
gine o f peak performance.
(D Note
Damage or ma lf u nction due to poo r fue l qual ­
ity is not covered by the A udi New Vehicle
Limited Warranty .
Diesel fuel
Applies to: vehicles with diesel engine
Always use ULSD (Ultra Low Sulfur Diesel) No. 2 .
The ULSD No . 2 meets the ASTM 0975.
Diesel f uel w it h concen tratio ns of b iod iesel h igh­
er than 5 % such as Bl 1, B20 or BlOO are strict ly
prohibited .
Se rvice station fuel p umps are labe led with the
correct f uel i nfo rmat ion for e asy recog nition by
the user.
If the d iesel f ue l pump is no t labeled
ask the station operator what fuel is being dis­
pensed before fil ling up your vehicle .
UL SD No . 2 m ay not be available ou tside the USA
and Canada . Be su re to check befo re t raveling to
other countries .
UL SD No . 2 c an become thic ke r i n ve ry cold tem­
peratures, and this can imp air the engine's s tart ­
ing and running. Depend ing on the sea son, gas
stations provide ULSD No . 2 that flows better in
cold temperatures so that you can continue oper ­
at ing your vehicle as usual.
@ Note
- Your vehicle's diese l engine was designed
sole ly for use with ULSD No . 2 . Therefo re,
neve r use gasoline, heating oil, other fuels
or flow improvers. These contain substances
that will severely damage the fuel system
and the engine . Such damage will not be
cove red by your New Vehicle Limited War-
r a nty.
- If you put a ny amo unt of incorrect fuel in
the fuel tank, do not sta rt the eng ine under
any circumstances. Imme diately contact the
II>-
213

Fuel and Refueling
nearest authorized Audi dealer or author­
ized Audi Service Facility for assistance.
These fuels contain substances that can se­
verely damage the fuel system and the en­
gine if the engine is started.
Refueling
Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel filler flap.
If the power locking system should fail, you can
still open the flap manual ly -for detailed instruc­
tions see
c;> page 216.
You can find the fuel tank capac ity of your vehicle
In .
The label on the inside of the fuel filler flap tells
you the correct fuel for your vehicle. For more in­
formation about fue l specifications, see
c;> page 212.
Your vehicle fuel tank has an onboard refuelling
vapor recovery system. This feature helps to pre­
vent fuel vapors from escaping from the tank and
pollut ing the environment while you refuel your
veh icle. In order to fill the tank properly while
protecting the environment, please follow this
refueling procedure carefully.
_& WARNING
Under normal operating conditions, never car­
ry additional fuel containers in your car. Gas
canisters and other containers used to trans­
port fuel can be dangerous. Such containers,
full or empty, may leak and could cause a fire
in a collision. If you must transport fuel to
use for you r lawn mower, snow blower, etc.,
be very careful and always observe local and
state laws regarding the use, transportation
and storage of such fuel containers. Make cer­
tain the container meets industry standards
(ANSI/ASTM F852 -86).
(D Note
Never drive your vehicle until the fuel tank is
completely empty. The ir regular supply of
fuel can cause m isfiring. Gasoline could enter
214
the exhaust system and damage the catalytic
converter.
Refuelling
Fig. 188 Right rear vehicle side: Opening the fuel filler flap
Fig. 189 Fuel fille r flap with attached fuel cap
When activating the central locking, the fue l fill­
er flap is automatically unlocked or locked. Re­
fuel the vehicle with the ignition switched
off.
Taking the fuel cap off
.,. Press the left side of the fuel fil ler flap to open
it
c;>fig. 188- arrow- .
.,. Unscrew f uel filler cap counter-clockwise and
hang it on the fuel filler flap¢
fig. 189.
.,. Check the label on the inside of the fuel filler
flap to determine if the vehicle must be fueled
with gasoline or diesel fuel.
Refuelling procedure
.,. Insert the fuel nozz le from the gasoline pump
into the fue l filler neck as far as it will go.
.,. Select a medium refuelling rate so that the
nozzle switches off automatically when the
tank is full.

Putting the fuel c ap back on
"' After filling your tank , tw ist the f uel fi ller cap
clockwise as far as it wi ll go .
"' Close the fuel filler flap.
To avoid fuel spill ing o r evaporating from the f uel
tank always close fuel filler cap properly and
comp let ely. An improperly closed fue l filler cap
may a lso caus e the MIL lamp ¢
page 28 to come
on (only vehicles with gasoline engine).
A WARNING
Improper refueling or handling of fuel can
cause fire, explosion and severe burns .
- Fuel is highly f lammable and can cause se­
vere burns and other injur ies.
-
- Failure to shut the engine off wh ile refuel ­
ing and/or to insert the pump no zzle fully
into the fuel filler neck could cause fuel to
spray out of filler neck or to overflow . Fuel
spray and overflowing fue l can cause a fire .
- Never use a cellular telephone wh ile refuel­
ing . The electromagnetic radiation can
cause spa rks that can ignite fuel vapors and
cause a fire.
- Never get back into your vehicle while refu­
eling .
If in except io na l circumstances you
must get back in you r vehicle while refue l­
ing, make certain tha t you close the door
and touch meta l to discharge static electric­
ity before touchi ng the filler nozz le again.
Static electricity can ca use spa rks that can
ignite fuel vapors released during refueling .
- Never smoke o r have an open flame any­
where in or near your vehicle when refueling or filling a portable f uel container.
- For yo ur safety , we strongly recommend
that you do not travel with a portable fue l
conta iner in your vehicle. The conta iner, full
or empty may leak and could cause a fire,
especially in a crash .
-If, under exceptional c ircumstances, you
must transport a portable fuel container,
please observe the follow ing :
- Neve r fi ll a portable fuel containe r wh ile i t
is anywhere in or on the vehicle (for exam ­
p le, in the luggage compartment, or on
the trunk) . Static e lectr icity can build up
Fuel and R efueling
whi le filling and can ignite fuel vapors
caus ing a fire .
- Always place a portab le fue l container on
the ground before f illing.
- Always keep the fi ller nozzle comp lete ly
inside the po rtable container before and
during f illing.
- If filling a portable container made of
metal, the filler nozz le m ust always be in
contact with the container. This will he lp
prevent stat ic electricity from discharging
and cause a fire .
- Never spill fue l inside the vehicle or lug­
gage compartment. F uel vapors are highly
flammable .
- Always observe local and state/prov incial
laws regarding the use, storage and trans ­
po rtation of fuel co nta iners.
- Make ce rtain t he f uel container meets in­
dust ry standards (ANSI/ ASTM F852-86) .
(0 Note
If any fuel has sp illed onto the car, it should
be removed immed iately to p revent damage
to the pa int.
@ For the sake of the environment
As soon as the correctly operated noz zle
switches off automatically for the first time,
the tank is fu ll. Do not try to add more fuel
because f uel may sp ill out . In add it ion, the
expans ion space in the fuel tank will be fi lled -
causing the fue l to overflow when it becomes
warm and po llute the environment.
(D Tips
- Runn ing your engine while refuelling may
cause vapors to escape or even ca use fue l to
spill out of the tank. This wo uld then shut
off the f uel no zzle befo re t he t ank is f ull.
- Do not ref ue l your veh icle with the ignition
switched on . The fuel gauge m ay o therwise
no t indicate the co rrect fuel leve l after refu­
elling.
- Diesel vehicles* are equ ipped wi th a die sel
m isf ueli ng pro tector . It a llows the vehi cle
to be fuele d only with a d iesel fue l pump .,.
215

Fuel and Refueling
nozzle. A worn or damaged nozzle or a noz ­
zle that is too small may not be ab le to open
the diesel m isfueling protector. If th is is the
case, try turning the nozzle before inserting
i t in the fuel f iller neck, use a different fuel
pump or see your authorized Audi dealer or
authorized repair facility for ass istance.
- The fuel filler flap of your vehicle is not
locked when you lock the veh icle from the
i nside .
Fuel filler flap emergency release
You can open the fuel filler flap by hand if the
power locking system should fail.
F ig . 190 Vehicles w ith se lect ive cata lytic reductio n: Right
side tr im pane l
Fig. 191 Right side trim panel in the lu ggage compart ·
ment: e mergency release mechan is m
...,
"' 9 ::i: ... (D
The emergency release mechanism is located be­
hind the right side trim panel in the luggage
compartment. In vehicles with selective catalytic
reduction*, remove the vent grille first :
.. Press both tabs@¢
fig. 190 and tilt the vent
gri lle downward. You can then remove the
grille upward.
.. Loosen the loop¢
fig. 191 from the retainer
and then pull on the loop carefully ¢(D.
216
.. Press on the left side of the fuel filler door to
open
¢ page 214, fig. 188.
(D Note
Only pull on the loop until you feel resistance .
You wi ll not hea r it re lease . Otherwise you
could damage the emergency release mecha­ nism.
Selective catalytic reduction (Ad Blue)
General information
Applies to: vehicles with selective catalytic reduction (SCR)
In vehicles with selective catalytic reduction, a
urea solution (AdBlue) is injected into the ex­
haust system before a nitrogen oxide catalytic
converter to reduce nitrogen emissions .
The Ad Blue is carried in a separate tank in the ve­
hicle. The AdBlue usage accounts for approxi­
mately 0.5% to 1.2% of the diesel fuel that is
used.
When a message about Ad Blue appears in the in­
strument cluster display, you must refill the
Ad Blue yourself or have it refilled by an author­ ized Audi dealer or author ized Audi Service Facili­
ty
¢ page 217.
@ Tips
-The instrument cluster display indicates the
distance remaining that can be driven
¢page 216. If the AdBlue tank is com­
pletely empty , the eng ine will not start
again after the ign ition is switched off.
- Ad Blue is required by law to operate th is ve­
hicle.
Messages in the instrument cluster display
Applies to: vehicles with selective catalytic reduction (SCR)
The display indicates if the Ad Blue level is Low or
if there is a system malfunction .
AdBlue level low
You will be informed if the AdBlue in the tank
drops below a certain level.

Fuses an d bulb s
Fuse p anel @ (red ) Fuse panel@ (black )
3 Starter diagnosis, DC/DC converter (with
Start/Stop system) 8 Rear
seat heating
9 Rear exterio r lighting
4 DC/DC converter (with Start/Stop system)
10 Rear
climate contro l blower
5 Image processing
Rear sun shade, closing aid, luggage com-
6 Right headl
ight (headlights with adaptive
light) 11 partment lid
lock, convenience key, fue l
filler doo r
7 ESC control module 12 Luggage compartment lid control module
8 Sound actuator, AEM control modu le
9 Adapt ive cru ise control
10 Transmission
control module
Fuse panel © (red )
No . Equ ipm en t
1 Rear seat adjustment buttons
1 1 Climate control system sensors
3 Left rear
seat (pneumatic)
Fuse panel © (br own ) 5 Trai
ler hitch control module
No. Equipm ent 6 L
eft rear seat
1 Electromechanical parking
brake
7 Right rear seat
2 Suspension control system sensor
8 Traile r hitc h control module
3 Rear Infotainment system control
panel
9 Trailer hitch control module
4 Smart module (tank) 10 Right rear seat (pneumatic)
5 Front climate contro
l system controls
6 Rear climate control system control panel
7 Networking gateway
8 Refrige rator
Fuse panel ® (brown )
No. Equipm en t
1 Start/Stop
system, radio receiver/sound
amplifier
9 Special functions interface
2 Sound amplifier
10 Cell phone adapter, Bluetooth handset
11 AEM control module 3 Start/Stop
system, Rear Seat Entertain-
ment, radio receiver/sou nd amplifier
12 Selector lever
5 Automatic dimming
rearview mirror
13 Ambient lighting 6 DVD changer (glove compa rtment)
14 Rear
exterior lighting
7 TV tuner
15 Fuel pump
8 Infotainment system control panel/drives
16 Electromechanica l parking brake
9 Instrument cluster, analog clock
Fuse panel @ (bl ack ) 10 Infotainment system d isp lay
N o. Equi pm en t 11 Radio receiver
1 Luggage compartment lid movement-acti-
vated openi ng 12
Rearview camera, pe
ripheral cameras
(parking system)
2 Luggage compartment sockets
3 Rear socket
4 Front cigarette lighter
5 adapt ive a ir suspension
6 115 V
socket
7 Electromechan ica l park ing brake
269