2015 AUDI S8 fuel pump

220 Fuel supply and filling your fuel tank
Fuel supply and filling
your fuel tank
Gasoline
Fuel supply
Appl ies to vehicles: with gasoline engine
Using the right fuel helps keep the environ­
ment clean and prevents engine damage .
Fuel recommendation
The fuel recommended for yo ur vehicle is un ­
l e aded premium
grade gasoline . Audi recom­
mends using TO P TI ER D ete rgent Gaso line
wi th a m inimum octane ra ting o f 91 A KI ( 95
RO N). Fo r more informa tio n o n TOP TIER De­
tergent Gasoline, p lease go to the o fficia l
websi te (www. topt iergas .com) .
The re commended gasoline octane rati ng for
your engine can a lso be fo und o n a label loc at­
ed on the ins ide of the fuel filler flap . This ra t­
ing may be specif ied as AK I or RO N.
Your veh icle may also be operated using un­
l eaded regular gasoline with a minimum oc ­
tane rating of 87 AKI/91 RO N. However, using
87 A KI/91 RON octa ne fue l wi ll slightly re ­
d uce eng ine perfo rmance .
Use unleaded ga soline only. U nleaded g aso­
l ine is available th rougho ut the USA, Canada,
a nd i n most E uropean countries . We recom ­
mend that you do not ta ke yo ur vehicle to
areas or co untries where unleaded gasoline
may not be ava ilable.
F or mo re informat io n on refue ling your ve hi­
cle, see~
page 222.
Octane rating
Octane rating ind icates a gaso line's abili ty to
res ist eng ine dam ag ing "knoc k" ca use d by
premature ign ition and detona tion. Therefore,
buy ing the correct grade of gaso line is very
important to he lp prevent possible engine
damage and a loss of engine performance.
Gasoline mos t commonly used in the Unite d
States and Canada has the following octane r
atings t hat can usu a lly be found on the fi ller
pump:
- Premium Gra de: 91 -96 A KI
- Regular Grade : 87 -90 AKI
Explanation of the abbreviations:
AKI = Anti K nock In d ex = (R+M )/2 = (RON
+ MON)/2
R ON= Resear ch Octane Numb er
MON = Motor Octane Num ber .
(D Note
-Do not use a ny fue l w it h o ctane rat ings
lower tha n 87 A KI or 91 RO N othe rwise
expensive engi ne damage w ill occur.
- Do
not use leaded gasoli ne. The use of
leaded gasoline w ill severely damage
yo ur v ehicle's cata lytic co nve rter and its
ability to co ntrol exha ust em issions .
Blended gasoline
Applies to vehicles: with gasoline engine
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether )
You may use unleaded g asoline blende d wi th
alcohol o r MTBE (commonly referred to as
oxygenates) if the blende d mixture meets t he
f o llow ing criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
- Anti -kno ck index must be 87 A KI or higher.
- Blend must contain no more t han 3% meth-
anol.
- Blend must contain more than 2% co -sol -
vents.
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
- Anti -knock index must be 87 AKI or higher .
- Blend must not conta in mo re tha n 10%
ethanol.
Blend of ga soline and MTBE
- Anti-knock index must be 87 AKI or higher. IJll,

,....,
N ,....,
N
0 J:
'SI: ,...., \!) ..,.,
,...., ..,., ,....,
-Blend must contain not more than 1S%
MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform
espec ially we ll for winter or summer driving.
During seasonal change-over, we suggest that
you fill up at busy gas stat ions where the sea­
sonal adjustment is more likely to be made in
time .
(D Note
-Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compo­
nents in the fuel system.
- Do not use fue ls that fail to meet the
specified criter ia in this chapter.
- If you are unable to determine whether
or not a particular fue l blend meets the
specifications, ask your service station or
its fuel supp lier.
- Do not use fuel for which the contents
cannot be identified.
- Fuel system damage and performance
problems resulting from the use of fuels
different from those specified are not
the responsibility of Audi and are not
covered under the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fuel economy
or driveability and performance prob­ l ems due to the use of one of these fuel
blends, we recommend that you switch
to unblended fuel.
Gasoline additives
Appl ies to vehicles : wit h gasoli ne e ng in e
A majo r concern among many auto manufac­
ture rs is carbon deposit build-up caused by
the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another , they have certain
things in common. All gasoline g rades contain
substances that can cause deposits to collect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline
Fuel supply and filling your fuel tank 221
brands include additives to keep engine and
fuel systems clean, they are not equally effec­
tive .
Audi recommends using TOP TIER Detergent
Gasoline . For more information on TOP TIER
Detergent Gasoline, please go to the official
webs ite (www.toptiergas.com).
After an extended per iod of using inadeq uate
fuels, carbon deposit build-ups can rob your
engine of peak performance.
(D Note
Damage or malf unct ion due to poor fuel
quality is not covered by the Audi New Ve­
hicle Limited Warranty.
Diesel fuel
Applies to veh icles : w ith diese l en gine
Always use ULSD (Ultra Low Sulfur Diesel)
No. 2. The ULSD No. 2 meets the ASTM D97S.
Diesel fuel with concentrations of biodiesel
highe r than S % such as Bll, B2O or BlOO are
strictly prohib ited .
Se rv ice stat ion fuel pumps are labeled with
the cor rect fuel informat ion for easy recogn i­
tion by the user. If the diesel fuel pump is not
labeled ask the station operator what fuel is
being dispensed before filling up your vehicle.
ULSD No. 2 may not be available outside the
USA and Canada. Be sure to check before trav­
eling to other countries .
Winter operation
ULSD No. 2 can become thicker in the winter .
Because of this, gas stations sell ULSD No. 2
with imp roved flow when cold during the win­
ter. Ask the gas stat ion attendant if the diesel
sold is winterized sufficient ly for the current
and the predicted temperatures.
If not winterized o r insuff icient ly w interized
ULSD No. 2 has already thickened to the ex­
tent that the engine will not start, warm the
vehicle up by leaving it in a heated garage.
Ill-
•
•

Refuelling
Fig. 190 Right rear vehicle sid e: Opening t he fuel filler
flap
Fig. 191 Fu el filler flap with attached fuel cap
When activating the central locking, the fuel
filler flap is automatically unlocked or locked.
Refuel the vehicle with the ignition switched
off.
Taking the fuel cap off
• Press the left side of the fuel filler flap to
open it¢
fig. 190 -arrow- .
• Unscrew fuel filler cap counter-clockwise
and hang it on the fuel filler flap
r;, fig. 191.
• Check the label on the inside of the fuel fill­
er flap to determine if the vehicle must be
fueled with gasoline or diesel fuel.
Refuelling procedure
• Insert the fuel nozzle from the gasoline
pump into the fuel 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 cap back on
• After filling your tank, twist the fuel filler
cap clockwise as far as it will go.
• Close the fuel filler flap.
Fuel supply and filling your fuel tank 223
To avoid fuel spilling or evaporating from the
fuel tank always close fuel filler cap properly
and completely. An improperly closed fuel fill­
er cap may also cause the MIL lamp¢
page 29
to come on (only vehicles with gasoline en­
gine).
A WARNING
-
Improper refueling or handling of fuel can
cause fire, explosion and severe burns.
- Fuel is highly flammable and can cause
severe burns and other injuries.
- Failure to shut the engine off while refu­
eling and/or to insert the pump nozzle
fully into the fuel filler neck could cause
fuel to spray out of filler neck or to over­
flow. Fuel spray and overflowing fuel can
cause a fire.
- Never use a cellular telephone while re­
fueling. The electromagnetic radiation
can cause sparks that can ignite fuel va­
pors and cause a fire.
- Never get back into your vehicle while re­
fueling. If in exceptional circumstances
you must get back in your vehicle while
refueling, make certain that you close
the door and touch metal to discharge
static electricity before touching the fill­
er nozzle again. Static electricity can
cause sparks that can ignite fuel vapors
released during refueling .
- Never smoke or have an open flame any­
where in or near your vehicle when refu­
eling or filling a portable fuel container.
- For your safety, we strongly recommend
that you do not travel with a portable
fuel container in your vehicle. The con­
tainer, full or empty may leak and could
cause a fire, especially in a crash.
- If, under exceptional circumstances, you
must transport a portable fuel container,
please observe the following:
- Never fill a portable fuel container
while it is anywhere in or on the vehicle
(for example, in the luggage compart­
ment, or on the trunk). Static electrici­
ty can build up while filling and can ig-
nite fuel vapors causing a fire. .,.
'------------=---------

224 Fuel supply and filling your fuel tank
-Always place a portable fuel container
on the ground before filling.
- Always keep the fi ller nozzle complete­
ly inside the portable conta iner before
and during filling.
- If filling a portable container made of
metal , the filler nozz le must always be
in contact with the container. This will
help prevent static electricity from dis­
charging and cause a fire .
- Never spill fuel inside the vehicle or
luggage compartment. Fuel vapors are
highly flammable .
- Always observe local and state/provin­
cial laws regarding the use, storage
and transportation of fuel conta iners .
- Make certain the fuel container meets
industry standards (ANSI/ ASTM
F852 -86) .
Q) Note
If any fuel has spilled onto the car, it
should be removed immediately to prevent
damage to the paint.
@ For the sake of the environment
As soon as the correctly operated nozzle
sw itches off automatically for the first
time, the tank is full. Do not try to add
more fuel because fuel may spill out. In
add ition, the expansion space in the fuel
tank will be filled -caus ing the fue l to
overflow when it becomes warm and pol­
lute the env ironment.
@ Tips
- Running yo ur engine while refuelling
may cause vapors to escape or
even
cause fue l to spill out of the tank. This
would then shut off the fuel nozzle be­
fore the tank is full.
- Do not refuel your vehicle with the igni­
tion switched on . The fuel gauge may
otherwise not indicate the correct fuel
level after refuelling.
- Diesel vehicles* are equipped with a die­
se l m isfueling protector.
It allows the vehicle to be
fueled only with a diesel
fuel pump nozzle . A worn or damaged
nozzle or a nozzle that is too small may
not be ab le to open the diesel misfueling
protector. If this is the case, try turning
the nozzle before inserting it in the fuel
filler neck, use a different fuel pump or
see your authorized Aud i dealer or au­
thorized repair facility for assistance.
- The fuel filler flap of your vehicle is not
locked when you lock the vehicle from
the inside .
Fuel filler flap emergency release
You can open the fuel filler flap by hand if the
power locking system should fail.
Fig. 192 V ehicl es with sele cti ve catalytic re d uc tion :
Right s ide tri m pan el
Fig. 19 3 Right s ide trim pan el in th e luggage compart·
m ent: em erg enc y re le ase m echani sm
The emergency release mechanism is located
behind the right side trim panel in the lug­
gage compartment. In vehicles with selective
catalyt ic re duction* , re move th e vent gr ill e
first :
... Press both tabs@q
fig. 192 and tilt the
vent gr ille downward. You can then remove
the grille upward . ..,_

.... N .... N
0 J:
'SI: .... \!) 1.1'1
.... 1.1'1 ,....,
No. Equ ipment
6 R
ight headlight (headlight
with adaptive light)
7 ESC control module
8
Sound actuator, AEM control
module
9 Adaptive cruise control
10 Transmiss
ion control mod-
ule
11 Climate control
system sen-
sors
Fu se pan el© (bro w n)
No. Equipment
1 E
lectromechanical parking
brake
2 Suspension control system
sensor
3 Rear
Infotainment control
system controls
4 Smart modul tank
5 Front
climate control system
contro ls
6 Rear climate control
system
controls
7 Networking gateway
8 Cooler
9
I nterface for specia l func-
tions
10 Cell phone
adapter, Blue-
tooth handset
11 AEM control modu le
1 2 Selector lever
13 Ambient lighting
14 Rear exterior lighting
15 Fuel
pump
16 Electromechanical parking
brake
Amps
10
5
7,5 10
5
5
Amps
5
5
5
5
15
10
s
15
s
5
15
10
10
20
25
30
Fu ses and bulb s 2 79
Fus e pan el@ (bla ck)
•
No. Equipment Amps •
1 Automatic luggage com
-
5
partment lid
3 Rear sockets 20
5 adaptive air suspension
15
6 115-Vsocket 25
7 E
lectromechanical parking
30
brake
8 Rear seat heating 25
9 Rear exterior lighting
20
10 Rear climate control system
20
blower
Rear sun shade, closing aid,
11 luggage
compartment lock,
20
convenience key, fue l filler
door
12 Luggage compartment
lid
30
control module
Fuse panel ® (red)
No. Equipm ent Amps
1 Rear
seat adjustment but-
tons 5
3 Left rear seat (pneumatics) 7,5
5 Tra
iler hitch control module* 25
6 Left rear seat 30
7 Right rear seat 30
8 Trailer hitch contro l modu le*
25
9 Tra ile r hitc h control modu le* 15
10 Right rear
seat (pneumatics) 7,5
Fuse pan el® (brown )
No. Equipment Amps
1 Start-Stop-System,
Radio re-
30
ceiver/sound amplifier
2 Sound amplifie r 30
Start-Stop-System, Rear
3 Seat
Entertainment, radio 7,5
receiver/sound amplifier
5
Automatic dimming interior 5
rearview mirror
6 DVD changer 5