2015 AUDI S3 SEDAN engine

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If th is indicator light turns on and stays on and
this message appears, the power steering may have failed .
Do
not continue driving. See an authorized Aud i
dea ler or autho rized Audi Service Facility for as­
sistance.
• Do not drive vehicle: steering defective
There is a malfunction in the electron ic steering
l ock. You cannot turn the ignition on .
Do
not tow your vehicle because it cannot be
steered. See an authorized Aud i dealer or author­
ized Audi Service Fac ility for assistance .
'-:r,ij Steering malfunction: you can continue driv­
ing
If the indicator light turns on, the steering whee l
may be more difficult to move or more sensitive
than usual. The steering wheel may also be at an
angle when dr iving straight.
Drive slow ly to an authorized Audi dealer or au­
thor ized Audi Se rvice Facility to have the ma l­
function corrected.
!II Steering lock: system fault! Please contact
Service
There is a malfunct ion in the electron ic steering
l oc k.
Drive to an authorized Aud i dealer or authorized
Aud i Service Facility immediately to have the
malfunction corrected.
_& WARNING
-
Have the system malfunction corrected as
soon as possible by an authorized Audi dealer
or authorized Audi Service Faci lity, as th is in­
creases the risk of an accident .
(D Tips
If
the . or ,-:r-n indicator light only stays on
for a short time, you may continue driving.
Intelligent Technology
All wheel drive (quattro)
Applies to vehicles: with all w heel drive
In all wheel drive, all four wheels are powered.
General information
In all wheel dr ive, the dr iv in g power is divided be­
tween all four whee ls . T his happens automatical­
ly depending on your driving behavior as well as
the current road conditions . Refer to¢
page 123,
Electronic stabilization control (ESC).
The all wheel drive concept is designed for high
engine power. Your vehicle is exceptionally pow ­
erfu l and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre­ cautions
q ,& .
Winter tires
By using all wheel drive, your vehicle has good
forward motion with standard tires in winter con­
ditions. However, in winter we recommend using
winter or all season tires on
all four wheels, be­
cause this will improve the
braking effect .
Snow chains
If
there are snow chain laws, snow chains must
also be used on vehicles with all wheel drive
q page 230, Snow chains.
Replacing tires
For vehicles with all wheel d rive, only wheels wi th
the same rolling circumference should be used.
Avoid wheels with different tread depths
qpage 221.
Offroad vehicle?
Your Audi is not an offroad vehicle -there is not
enough ground clearance. For this reason, avoid
difficult terra in. Refer to¢
page 259.
_& WARNING ~
-Also, in vehicles with a ll wheel drive, adapt
your driving style to the current road and
traffic cond itions . Do not let the increased
safety provided tempt you into taking risks.
- The braking ability of your veh icle is limited
to the tract ion of the wheels. In th is way, it
127

Intelligent Technology
is not different from a two wheel drive vehi­
cle. Do not be tempted to accelerate to a
high speed when the road is slippery th is in­
creases the r isk of an accident.
- Note that on wet streets, the front wheels
can "hydrop lane" if driving at speeds that
are too high . Unlike front whee l drive
vehicles, the engi ne does not rev higher sud­
denly when the vehicl e begins hyd rop laning.
Fo r th is r easo n, pay a ttent ion to the road
co ndi tions regardless of your speed.
Energy management
The starting ability is optimized
The en ergy management system manages the
electrical energy distribution and optimizes the
availability of electrical energy for starting the
engine.
When a ve hicle with a co nventional energy sys­
tem is not driven for a long time, the battery is
drained by equipment (for example the immobil­
izer) . In certa in circumstances , there cou ld may
not be eno ugh energy to start the engine .
Your vehicle is equipped w it h an intelligent ener­
gy management system for distr ibut ing electric i­
ty . T his sign ificantly improves the starting ability
and inc reases the battery life .
The energy management system Is made up of
battery diagnos is , idling cu rrent management
and dynamic energy management.
Battery diagnosis
The batte ry diagnosis determines the batte ry
charge leve l. The sensors determine the batte ry
voltage, the battery current , and the battery
t emperature . The current cha rge level and the
pe rformance of t he battery a re dete rmined based
on this .
Idling current management
The idling cu rrent management decreases the
energy used while parked. W it h the engine
sw itched off, it manages the energy d istribution
to the different electrical components . Date from
battery diagnosis is taken into account for this .
128
Depend ing on the ba tte ry charge leve l, electrical
equipment is switched off one item after the oth­
er, to prevent the battery from dra ining and to
retain the start ing ability.
Dynamic energy management
While driv ing, dynam ic ene rgy management dis­
tribu tes the appropriate amount o f energy to the
e lectrica l equ ipment. It control s the battery
charge level so that more ene rgy is not used then
i s be ing generated in order to maintain an opti­
mal battery charge level.
(D Tips
'
- Energy management cannot overcome the
laws of p hys ics. Note that the charge level
and length of the battery life a re limited.
- When the sta rting ability is endangered, the
(•) indicator light t urns on
c:> page 19 .
What you should know
Maintaining the starting ability is the highest
priority.
A lot of st ress is placed on the battery when dr iv ­
ing sho rt distances, in traffic, and at cold t imes
of the year. A lot of energy is used but little is
generated.
It is also critical when the engine is
not ru nning but e lectr ica l equipment is sw itched
o n. In th is case, energy is used but none is gener ­
ated.
In sit uat ions like this, e nergy ma nagement w ill
active ly regu lated the distribution of energy .
Long periods without use
If you do not drive your vehicle for several days or
weeks, e lectr ica l cons umers are grad ually scaled
back or sw itched off. This reduces energy use and
ensures the ve hicle w ill be able to start after long
per iods of time . Some conven ience functions
suc h as opening w it h the remote co ntrol key may
not be available. These conve nience f unct ions
will be ava ila ble aga in once you swi tch the igni-
tion on and st art the eng ine . .,_

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With the engine switched off
The battery will dra in if you use functions s uch as
listening to the radio while the engine is switched
off.
The vehicle 's ability to start may be impaired by
the energy use, a message w ill appear in the In­
fotainment system disp lay.
The message ind icates that the system will
switch off automatically soon.
If you would like
to continue using the functions, you must start
the eng ine.
With the engine running
Although electrical energy is generated wh ile
driving, the batte ry can drain. This can happen
when little energy is gene rated, and much is used
and the charge level of the battery is not optima l.
To restore the balance of energy, components
that require large amounts of energy are tempo­
r ar ily sca led back or switched off. Heating sys­
tems in particular require a great deal of energy.
If you notice, for example, that the seat heating*
or rear window defroster is not working, then it
has been temporari ly reduced or switched off .
These systems are avai lab le aga in as soon as the
energy balance has been restored.
In addition, you may notice that the idle speed
has slightly increased . That is normal and no
cause for concern. Due to the increased idling
speed, the add itional required energy w ill be gen­
erated and the battery will be charged .
Intelligent Technology
129

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
N
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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

Checking and Fill in g
These fuels contain substances that can se ­
verely damage the fuel system and the en­
gine if the engine is started .
- If the diesel f uel quality is poor, it may be
necessary to have the water d rained from
the water separator in the
fuel filter more
often than specified in the maintenance
schedule. This can help reduce engine ma l­
funct ions
c:> page 2 3.
Refueling
Fuel filler neck
The fuel filler neck is located on the right rear
side pane l behind the fuel f iller flap.
If the power locking sys tem should fail, you can
still open the flap manua lly -for detai led instruc ­
tions see
c:> page 194.
You can find the fue l tank capacity of you r vehicle
in
c:> page 260.
The label on the inside of the fue l filler flap te lls
you t he cor rect fuel for your vehicle. For more in­
form ation abo ut fue l specifications, see
c:> page 190 .
Your vehicle fuel tank has an on board refue lling
vapor re cove ry system . This feature helps to p re­
ve nt fuel vapors from escaping from the tank and
pollut ing t he environment w hile you refue l yo ur
ve hicle. In orde r to fill the tank p roperly whi le
protecting the environment, please follow this
refueling procedure carefully.
A WARNING
Under normal operating conditions, never ca r­
ry additional fuel containers in your car . Gas
canisters and ot her conta iners used to trans­
port fuel can be dangerous . Such contai ners,
full or empty, may leak and could cause a fire
in a collision. If yo u m ust t ransport fue l to
use fo r yo ur l awn m owe r, snow b lower, etc.,
be very ca re ful and a lways observe loca l and
state laws rega rding the use, transportation
and sto rage of such fuel containe rs . Make cer­
tain the container meets industry standards (ANSI/ASTM F852 - 86).
192
(D Note
Never drive your vehicle until the fue l tank is
complete ly empty . The irregular supply of
f u el can cause misfiring. Gasoline could enter
the exhaust system and damage the catalytic converter.
Fueling procedure
F ig . 149 Righ t rea r ve hicle s ide: open ing t he fuel filler
door
Fi g. 15 0 Fuel fill er doo r wit h attac hed fuel cap
Re ad a nd fo llow the informa tion and war ning s
whe n filling AdB lue
c:> page 195 .
The fuel filler doo r is u nlocked or locked by the
cent ral lock ing system.
Opening the fuel flap
--0 ~
ffl
.,.. Press the left side of the fuel f iller door to open
it -arrow-
c:> fig. 149 .
.,.. Unscrew the tank cap counterclockw ise .
.,.. Place the cap from above on the open fue l filler
door
c:> fig . 150.
Closing the fuel cap
.,.. Turn the f uel cap clockwise until you hear it
lock .
.,.. Close fuel fi ller door until it latches.

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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

Checking and Fill in g
the expansion space in the tank will fi ll,
which can result in fuel spilling out when it
becomes warm and polluting the environ ­
ment.
(D Tips
- If
the engine is running while fueling, va­
pors can escape or the fuel can spill over.
Because of th is, the fuel nozz le switches off
before th e tank is full.
- Do not fue l the vehicle when the ignition is
switc hed on. Otherwise, the fuel gauge may
not show the correct level after fueling the
vehicle.
- Diesel vehicles are equipped with a diesel
misfueling guard
l). It allows the vehicle to
be fueled on ly w ith a diesel fuel p ump noz­
zle .
- A worn o r damaged nozzle or a nozz le that
i s too sma ll may not be able to open the die­
se l m isfue ling protector. If this is the case,
try turning the no zzle before inser ting it in
the fue l filler neck, use a different fuel
p ump or see an a uthorized Audi dea le r or
a uthorized Audi Service Facility for assis­
tance .
- The misfueling guard does not o pen whe n
adding fue l from a fuel contai ne r. Yo u can
bypass it by adding the diese l fuel s low ly .
- The fuel filler door on your vehicle does not
l ock when you lock the vehicle from the in­
side.
l l Market -spec ifi c
194
Fuel filler door emergency release
If the central locking system is faulty, the fuel
filler door can be unlocked manually .
Fig. 15 1 Rig ht rear luggage compartme nt: emergency re­
lease
The emergency release mechanism is located be­
hind the right side trim panel in the luggage
compartment.
.,. Remove the cover in the side panel.
.,. Loosen the loop from the retainer and then pull
on the loop ca refully-ar row-
c::> 0 . The fuel fill­
er door is released .
.,. To open the fue l filler door, press o n the left
side
opage 192, fig. 149 .
(D Note
Only pull on t he loop u ntil yo u feel resistance.
You will not he ar it release. O therwise you
could damage the emergency rele ase mecha­
nism.
Catalytic converter
App lies to vehicles: with gasoline e ngine
It is very important that your emission control
system (catalytic converter) is functioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner .
.,. Always use lead-free gasoline c::> page 190, Fuel
supply .
.,. Never run the tank down all the way to empty .
.,. Never put too much motor o il in yo ur engine
o page 203, Adding engine oil 'l:::11 .
.,. Never try to push- or tow-sta rt you r vehicle .