2013 AUDI S4 gas type

216 Fuel supply and filling your fuel tank
-Inform your authorized Audi dealer that
you are operating or have operated the
vehicle with E85.
- Read and follow the information and tips
about gasoline
¢ page 214.
@ Tips
I t may take longer to start the engine
when the outside temperature is very cold.
If possible, use winterized fuel if tempera­
tures are below freezing.
Gasoline additives
A major concern among many auto manufac­
turers 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 grades contain
substances that can cause depos its to collect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline
b rands include additives to keep eng ine and
fuel systems clean, they are not equally effec­
tive.
Aud i recommends using TOP TIER Detergent
Gasoline. For more information on TOP TIER
Detergent Gasoline, please go to the official
website (www.toptiergas .com).
After an extended period of using inadequate
f u els, b uilt-up carbon deposits can rob your
engine of peak performance.
CJ) Note
-Damage or malfunct ion due to poor fuel
quality is not covered by the Audi New
Vehicle Limited Wa rranty.
- Do not add aftermarket fuel addit ive
products to your fuel tank .
Fuel tank
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 fai l, you
can still open the flap manua lly -for detailed
instructions see
¢page 218.
You can find the fuel tank capacity of your ve­
hicle in
Technical Data ¢page 277 .
T he label on the inside of the fuel filler flap
te lls you the correct fuel for your veh icle. For
more information about fuel specifications,
see ¢
page 214.
Your vehicle fuel tank has an on-board refuel­
ling vapor recovery system. This feature helps
to prevent fue l vapors from escaping from the
tank and polluting the environment while you
refuel your vehicle. In order to fi ll the tank
proper ly while protecting the environment,
please fo llow this refueling procedure careful­
ly.
A WARNING "'--
Under normal operating cond itions, never
carry addit ional fuel conta iners in your car .
Gas canisters and other conta iners used to
transport fuel can be dangerous. Such con­
tainers, full or empty, may leak and could
cause a fire in a collision . If you must
transport fuel to use for your lawn mower,
snow b lower, etc., be very careful and al ­
ways observe loca l and state laws regard­
ing the use, transportation and storage of
such fuel containers. Make certain the con­
tai ner meets industry standards (ANSI/
ASTM F852 -86).
(D Note
Never drive your veh icle until the fuel tank
i s completely empty. The irregular supply
of fuel can cause misfiring. Gasoline could
enter the exhaust system and damage the
catalytic converter.

230 Check ing and filling
Have the battery checked when you take your
vehicle in for service. You are well advised to replace a battery that is older than 5 years.
W ith certa in types o f airbag deployment, the
battery is disconnected from the vehicle elec ­
trica l system for safety reasons¢
& in Re­
pair, core and disposal of the airbags on
page 159.
Disconn ect ing the battery terminal s
Some vehicle functions (power window regu­
lators, for example) are lost if the battery ter­
minals are disconnected . These functions have
to be re learned after the battery terminals are
connected again. To prevent this, the battery
should only be disconnected from the vehicle
electrical system when absolutely necessary
for repairs .
Vehicles not dri ven fo r lo ng p eriod s
If you do not drive your vehicle over a period
of several days or weeks, electrical compo­
nents are gradually cut back or switched off.
This reduces energy consumption and main ­
tains starting capabil ity over a longer period
¢ page 192.
Some of the conven ience functions may not
operate, such as the inter ior lights or the
power seat adjustment. The conven ience
functions will be ava ilable again when you
turn on the ignition and start the eng ine.
Winter operati on
During the winter months, battery capacity
tends to decrease as temperatu res drop . This
is because more power is also consumed while
start ing , and the headlights, rea r window de­
fogger, etc., are used more often .
Avoid unnecessary power consumption, par­
ticularly in c ity traffic or when traveling on ly
short distances. Let you r authorized Audi
dea ler check the capacity of the vehicle bat ­
tery before winter sets in
¢ page 232. A well
charged batte ry w ill not only prevent sta rting
prob lems when the weather is cold, but wi ll
a lso last longer.
(D Tips
If your vehicle is left standing for seve ral
weeks at extremely low temperatures, the
vehicle battery sho uld be removed and
stored where it w ill not freeze . This will
prevent it from be ing damaged and having
to be replaced .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart­
ment under the floor. Before you check any­
t hi ng in the luggage compartment,
read and
heed all WARNINGS
¢ ,& .
Always heed the safety warnings , when work­
ing on the vehicle battery or the vehicle e lec­
trical system to prevent injury.
Th e follo wing WARNINGS are very
important when working on the battery :
Al ways heed the follo wing WARNING SYM­
BOLS and safety prec aution s when working
on the battery .
® Always wear eye protection .
,0,. Battery acid contains sulfuric acid . Al­
~ way s wear glov es and ey e prot ectio n.
~ No
\!SI -sparks
-flames
-smoking.
A Wh en a battery is charged , it produ ce s
~ hydro gen gas which is e xplosi ve and
c o uld cau se pe rson al injur y.
~ Always keep the battery well out of
'if!:11 reach of children .
_& WARNING
Whenever working on the battery or on
the electrical system, there is the risk of
injury, accident and even fire . Read and
heed the following WARNINGS:
-

234 Tire s and wheel s
Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle . Tires are,
however, one of the most important parts of a
vehicle, particularly considering the compara­
tive ly small patch of rubber on each tire that
assures that a ll-impo rtant contact between
you, your vehicle and the road.
Maintaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry mo re weight than they can safe ly han­
d le, avoiding damage from road hazards and
reg ularly inspecting t ires for damage includ­
ing cuts, slashes irregu la r wear and ove rall
condition are the most important things that
you can do to he lp avoid sudden tire failure in­
cluding tread separat ion and blowouts.
Avoiding damage I f you have to drive over a curb or similar ob­
stacle, drive very s low ly and as close as possi ­
b le at a right angle to the curb.
A lways keep chem ica ls includ ing gre ase, o il,
gasoline and b rake fluid off the ti res .
Inspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedded in the treads.
Storing tires Mark tires when you remove them to indicate
the direction of rotation . Th is ensures you to
be ab le to mount them correctly when you re­
install t hem.
When removed, the whee ls or t ires should be
stored in a cool, d ry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on r ims, in a horizontal pos it ion if
they are mounted on rims. New tire
s
New t ires have to be broken in¢&,. .
T he tread depth of new t ires may vary, accord­
ing to the type a nd make of t ire and the tread
pa tte rn .
Hidden damage
Damage to tires and r ims is ofte n not readily
vis ible . If you notice unusual v ibrat ion or the
vehicle p ulls to one s ide, th is may ind icate
t h at one of the t ires has been damaged . Th e
t ir es m ust be checked immed iate ly by an au ­
tho rized Aud i dea le r or q uali fied wor ks hop.
Unidirectional t ires
A un idirectional tire can be identified by ar­
rows on the s id ewa ll, that po int in the direc­
t ion the t ire is desig ned to rotate. You mus t
f ol low the specified d irection of rotation . This
is necessary so that these tires can develop
their optimum characterist ics regarding grip,
road no ise, wear and hyd rop laning resistance.
For more information
¢ page 263.
A WARNING
-New tires or tires that are o ld, worn or
damaged cannot provide maximum con­
trol and braking ability .
-
-New tires tend to be slippery and must
also be broken-in. To reduce t he risk of
losing control, a collision and se rious
pe rsonal injuries, drive w it h specia l care
for the first 350 miles (560 km).
- Driving with worn or damaged tires can
le ad to loss of control, sudden tire fail­
ure, including a blowou t and sudden de­
fl ation, c rashes and seriou s personal in­
juries . Have wo rn or damaged t ires re­
p laced immediate ly .
- T ires age even if they are not being used
an d can fai l sudden ly, especially at high
speeds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith specia l care and at low
speed.

symbols) indicate the positions of the tread
wear indicators. Worn tires must be replaced.
Different fig ures may apply in other co untries
c:> .&. .
Tir e pres sure
Incorrect tire pressure causes premature wear
and can cause sudden tire blow -out. For this
reason, tire pressure must be checked at least
once a month
c:> page 241.
Driving sty le
Driving fast around curves , heavy acceleration
and hard braking increase tire wear .
Rotating tires for mo re even wear
For all four t ires on your vehicle to have the
same se rvice life, we recommend that the
fro nt and rea r tires are rotated according to
the t ire manufacture r's suggested tire rota­
tion intervals. Please remember the follow ­
ing:
- T ire rotat ion inte rva ls may differ from the
vehicle service intervals outlined in your
Maintenance and Wa rranty Booklet .
- T he longer one tire is used in one location
on the vehicle, the more it wears at certa in
points; therefore, we recommend that you
fo llow the t ire manufacturer's suggested
t ire rotation intervals .
- Vehicles with front -wheel drive experience
more tread wear on the front wheels com­
pared to all whee l drive (quattro ®).
- Please rotate tires as shown
c:> fig. 194.
-Extra care must be taken when rotating di-
rection-specific tires
c:> page 263 .
Wheel balancing
The wheels on new vehicles are balanced .
H oweve r, va rio us situations d uring eve ryday
driving can cause them to be come unbal­
anced, resu lting in vibrations you can us ually
feel through the steering wheel.
Unba lanced wheels must be rebalanced to
avoid excessive wea r on s teer ing , suspens ion
and tires. A wheel must a lso be rebalanced
when a new tire is installed.
Tire s an d wheel s 245
Incorrect wheel alignment
Incor rect wheel alignment can cause exces­
sive tire wear, impairing the sa fety of the vehi ­
cle . If tires show excessive wear, have the
whee l alignment checked by an a uthorized
Audi dealer or qualified workshop.
All wheel drive
Vehicles wi th quattro ® must a lways have tires
of the same size, construction and tread type. For details see
<=:> page 191.
_8 WARNING
Sudden tire fa ilure can lead to loss of con­
trol, a crash and serious personal injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica­
tors.
- Worn ti res are a safety hazard, they do
not grip well on wet roads and increase
your r isk of "hydroplaning" and loss of
control.
- Always keep chemicals that can cause
tire damage, such as grease, o il, gasoline
and brake fluid away from tires .
- Tires age even if they are not being used
and can fail sudden ly, especially at high
speeds. T ires that are more than 6 years
old can only be used in an emergency
and then w ith special care and at lower
speeds.
- Never mount used tires on your veh icle if
you are not sure of the ir "previous histo­
ry ." O ld used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire fai lure
and loss of vehicle control. •
•