2015 AUDI S3 SEDAN fuel pump

Checking and F ill in g
Checking and Filling
Gasoline
Fuel supply
App lies to veh icles: w ith gaso line engine
Using the right fuel helps keep the environment
clean and prevents engine damage.
Fuel re co mm en da tion
The fuel recommended for your vehicle is unl ead­
e d prem ium
grade gaso line. 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,
please go to the official 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 gasol ine with a minimum octane rat ­
ing of 87 AKl/91 RON. However, using 87 AKI/
91 RON octane fue l wi ll sli ght ly reduce engine
pe rformance.
U se un leade d ga solin e only . Unleaded gasoline
is available throughout the USA, Canada, and in
most European countries. We recommend that
you do not ta ke you r vehicle to areas or countr ies
where unleaded gasoline may no t be ava ilable.
For more informat ion on refueling your veh icle,
see
¢page 192.
Octan e rat ing
Octane rating indicates a gasoline's ability to re­
sist engine damaging "knock" caused by prema­
ture ignition and detonation . Therefore, buying
the correct grade of gasoline is very important to
he lp prevent possible eng ine damage and a loss
of eng ine performance.
Gasoline most commonly used in the Un ited
States and Canada has the following octane rat­
i n gs that ca n usually be found on the filler pump:
- Prem ium Grade : 91 - 96 AKI
190
- Regular Grade: 87 -90 AKI
Explanation of the abb reviations:
AKI = Anti Knock Index = (R +M)/2 = (RON+MON)/
2
RON= Research Octane Number
MON = Motor Octane Number.
{[) Note
-Do not use any fue l w ith o ctane rat ings low­
er than 87 AKI or 91 RON otherwise expen­
sive engine damage w ill occur .
- Do
not use leaded gasoline. The use of lead­
ed gasoline will severely damage your veh i­
cle's catalytic converter and its abi lity to
control exha ust em issions.
Blended gasoline
App lies to vehicles: wit h gaso line e ngi ne
U se of g aso lin e cont aining alcohol or MTBE
( meth yl tert iary butyl ethe r)
You may use unleaded gasoline blended with al­
cohol or MTB E (commonly referred to as oxygen­
ates) if the ble nded mixture meets the following
criteria:
Blend of gasoline methano l (wood alcohol or
m eth yl alcoho l)
-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 ga solin e and ethan ol (grain alcoh ol or
ethyl alcohol )
- Anti-knock index must be 87 AKI or h igher.
- Blend must not conta in more than 15% etha-
nol.
Blend of ga soline a nd M TBE
- Anti-knock index must be 87 AK I or h igher.
- Blend must contain not more tha n 1S % MTB E.
S eas onall y adjust ed 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 tha t you .,..

fill up at busy gas stations where the seasonal
adjustment is more likely to be made in time.
(D Note
- Methanol f uels which do not meet these re­
quirements may cause corrosion and dam ­
age to plastic and rubber components in the
fuel system.
- Do not use fue ls that fail to meet the speci­
fied criteria in this chapter.
- If you are unable to determine whethe r o r
not a particular fue l blend meets the speci­
fications, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identified.
- 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 Vehicle or the Emission Control
System Warranties.
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel b lends, we
recommend that you sw itch to unb lended
fuel.
Gasoline additives
A ma jor concern among many auto manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use.
Although gasol ine grades differ from one manu­
facture r to another, they have certa in things in
common . All gasoline grades contain substances
that can cause deposits to collect on vita l engine
parts, such as fue l injectors and intake valves. A l­
though most gasoline brands include additives to
keep engine and fuel systems clean, they are not
equally effective .
Audi recommends using TOP TIER Detergent Gas ­
oline. For more information on TOP TIER Deter-
"' gent Gasoline, please go to the off icial webs ite
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~ (www .toptiergas.com).
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Checking and Fillin g
After an extended period o f using inadeq uate
fuels, carbon deposit build-ups can rob your en­ gine of peak performance .
(D Note
Damage or malf u nction due to poor fuel qual ­
ity is not cove red by the Audi New Vehicle
Limited Wa rranty.
Diesel fuel
Applies to vehicles: with diesel engine
Always use ULSD (Ultra Low Su lfur Diesel) No. 2 .
The ULSD No. 2 meets the ASTM 0975.
Diesel fuel w ith concen tra tions of biodiese l hig h­
er than 5
% such as Bl 1, B20 or 8100 are strictly
prohibited .
Se rv ice stat io n fue l pumps a re labe led with the
correct fue l information for easy recognit ion by
the user .
If the diese l fue l pump is not labe led
ask the station operator w hat fue l is being dis­
pensed before fi lling up your vehicle.
UL SD No. 2 may not be available outside the USA
and Canada . Be sure to check before traveling to
other countr ies .
UL SD No. 2 can become thicke r in very cold tem­
pera tures, and th is can impa ir t he engine's start­
ing and running. Depending on the season, 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
- Yo ur vehicle's diesel engine was designed
soley for use with ULSD No. 2. Therefore,
never use gasoline, heating oil, other fuels
or flow improvers. These conta in substances
that will severe ly damage the fuel system
and the engine . Such damage will not be
covered by you r New Veh icle Limited War­
ranty.
- If you put any amount of incorrect fuel i n
the fuel tank, do not start the eng ine under
any circumstances. Immediate ly co ntact t he
nearest authori zed Aud i dealer or autho r­
ized Aud i Service Fac ility for assistance .
191

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Once the pump nozzle switches off, the fuel tank is "full". Do not fill the tank more. Otherwise the
expansion space in the tank will be filled.
The correct fuel type for your vehicle can be
found on a label located on the inside of the fuel
filler door. For additional information on fuel , re­
fer to ¢
page 190.
The fuel tank capacity of your vehicle is in the
Technical Data ¢ page 260.
To avoid fuel spilling or evaporating from the fuel
tank always close fuel filler cap properly and
completely. An improperly closed fuel filler cap
may also cause the MIL lamp ¢
page 25 to come
on.
A WARNING
Not paying attention when fueling or han­
dling fuel incorrectly can lead to fires, explo­
sions or serious injuries.
- Fuel ignites easily and can cause serious burns and other injuries.
- If you do not switch the engine off when fu­
eling and/or do not insert the fuel no zzle
completely into the tank opening, fuel can
leak out or run over . Leaked fuel can ignite
and start a fire.
- Do no t use the telephone while fueling. The
electromagnetic rays can cause sparks,
which can ignite fuel vapors and start a fire .
- Do not sit in your vehicle while fueling . If
you must make an exception and enter your
vehicle again while fueling , close the door
and touch metal to discharge static electric­
ity before touching the fuel nozzle. Static
electricity can create sparks, which can ig­
nite vapors when fueling.
- Do not smoke or have an open flame in the
area when fueling your vehicle or filling a
fuel container because this increases the
risk of an explosion.
- For your safety, carrying fuel containers in
your vehicle is not recommended. Whether
full or empty, the container can leak and
cause a fire in the event of an accident .
-If you must make an exception and trans­
port a fuel container, note the following:
Checking and Filling
- Never fill the fuel container with fuel
while it is in or on the vehicle . Static elec­
tricity is discharged when filling which can cause the fuel vapors to ignite and increas­
es the risk of an explosion .
- Always place a fuel container on the
ground before filling .
- Always hold the fuel nozzle completely in
the fuel container when filling .
-If the fuel container is made of metal, the
fuel nozzle must always be in contact with
the container when filling it with fuel. This prevents static electricity from discharg­
ing .
- Never spill fuel in the vehicle or the lug ­
gage compartment . Evaporated fuel is ex­
plosive and increases the risk of serious in­
jury or death.
- Follow legal requirements when using,
storing and transporting fuel containers .
- Make sure the fuel container conforms to
industry standards (ANSI/ASTM F852-86).
Q) Note
-Remove spilled fuel from vehicle paint im­
mediately , because it can damage paint .
- Never drive until the fuel tank is completely
empty. The irregular supply of fuel that re­
sults from that can cause engine misfires .
Uncombusted fuel will enter the exhaust
system and increase the risk of damage to
the catalytic converter.
- If the fuel tank runs completely empty in a
vehicle with a
diesel engine, the ignition
must remain switched on for at least 30
seconds after refueling before starting the
engine. It may take longer than usual for
the engine to start, even up to a minute.
This is because the air must first bleed out of the fuel system when starting the engine .
@ For the sake of the environment
- If
the fuel nozzle is used correctly, it will in­
dicate that the tank is full the first time it
switches off automatically. Do not try to add
more fuel, because it can spill over. Also, "'
193

Fuses and bulbs
No. Equipment
F49 Starter, clutch sensor,
headlight relay coil
F53 Rear window defogger
The power seats* are protected via
circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.
(0 Tips
Note that the following table was accurate at
the time of printing and is subject to change.
Left engine compartment fuse assignment
Fig. 187 Engine compartmen t: fuse assig nme nt
No. Equipment
Fl ESC control module
F2 ESC control module
F3 Engine control module (gasoline/diesel)
Engine cooling, engine components, auxili-
F4 ary heater coil relay (1+2), secondary a ir
injection pump relay
FS Engine components, tank system
F6 Brake light sensor
F7 Engine components, water pumps
F8 Oxygen sensor
250
No. Equipment
F9 E
ngine components, exhaust door, glow
time control module, SULEV valve
Fl0 Fuel injectors, fuel control module
Fll Auxiliary heater heating element 2
F12 Auxiliary heater heating element 3
F13 Automatic transmission control module
FlS Horn
F16 Ign ition coil
F17 ESC
control module, engine contro l mod-
ule
F18 Terminal 30 (reference voltage)
F19 Windshie
ld wipers
F20 Horn
F22 Terminal 50 diagnosis
F23 Starter
F24 Auxiliary heater heating element 1
F31 Vacuum pump
F32 L
ED headlights
(!') Tips
Note that the following tab le was accurate at
the time of printing and is subject to change.
Bulbs
Replacing light bulbs
For your safety , we recommend that you have
your authorized Audi dealer replace burned out
bulbs for you.
It i s becoming increasingly more and more diffi­
cu lt to replace vehicle light bulbs s ince in many
cases, other parts of the car must first be re­
moved before you are able to get to the bulb.
This applies especially to the light bulbs in the
front of your car which you can only reach
through the engine compartment.
Sheet meta l and bulb holders can have sharp
edges that can cause serious cuts, and pa rts
must be correctly taken apart and then properly
put back together to help prevent breakage of
parts and long term damage from water that can .,,_