2013 AUDI S4 air condition

Intelligent technology Notice about data
recorded by vehicle
control modules
Your vehicle is not equipped with an Event Da­
ta Recorder (EDR), installed by some manu­
facturers for the express purpose of capturing
data for retrieval after an accident or crash
event. EDR's are sometimes called "crash re­
corders".
Some state laws restrict the retr ieval or down­
loading of data stored by EDR's that were in­
stalled in a vehicle for the express purpose of
retrieving data after an accident or crash
event without the owner's consent.
Although your vehicle is not equipped with an
EDR, it is equipped with a number of electron­
ic control modules for various vehicle systems
such as, for examp le, engine function, emis­
sion control, as well as for the airbags and
safety belts.
These electronic control modules also record
vehicle-related data during norma l vehicle op­
eration for diagnostic and repair purposes.
The recording capacity of the electronic con­
trol modules is limited to data (no sound is re­
corded) and only a small amount of data is ac­
tually recorded over a very limited period of
time and stored when a system fault or other
condition is sensed by a control unit. Some of
the data then stored may relate to vehicle
speed, direction, braking as we ll as restraint
system use and performance in the event of a
crash or other condition. Stored data can only be read and downloaded with special equip­
ment.
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidding and loss of veh icle control. It works
only when the engine is running. ESC detects
Intelligent technology 185
certain difficult driving situations, including
when the vehicle is beginning to spin (yaw)
out of control and helps you to get the veh icle
back under control by se lectively braking the
wheels, and/or reducing engine power and
providing steering ass istance to help hold the
vehicle on the driver's intended course. The in­
dicator light
JjJ in the instrument cluster
blinks when ESC is taking action to help you
control the vehicle.
ESC has limitations .
It is important to remem­
ber that ESC cannot overcome the laws of
physics.
It will not always be able to help out
under all conditions you may come up against.
For example, ESC may not always be able to
help you master situations where there is a
sudden change in the coefficient of friction of
the road surface. When there is a section of dry road that is suddenly covered with water,
slush or snow, ESC cannot perform the same
way it would on the dry surface. If the vehicle
hydroplanes (rides on a cushion of water in­
stead of the road surface), ESC will not be
able to help you steer the vehicle because con­
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered .
During fast cornering, particularly on winding
roads, ESC cannot always deal as effectively
with difficult driving situations than at lower
speeds. When towing a trailer, ESC is not able
to help you regain control as it would if you
were not tow ing a trailer.
A lways adjust your speed and driving style to
road, traffic and weather conditions. ESC can­
not override the vehicle's physical limits, in­
crease the available traction, or keep a vehicle
on the road if road departure is a result of
driver inattention. Instead, ESC improves the
poss ibility of keeping the vehicle under con­
trol and on the road dur ing extreme maneu­
vers by using the driver's steering inputs to
help keep the vehicle going in the intended di­
rection. If you are traveling at a speed that
causes you to run off the road before ESC can
provide any assistance, you may not experi­
ence the benefits of ESC.
•
•

A WARNING ,~ ~
After driving through water, mud, slush,
etc., the brakes may be slow to take effect
because of wet brake rotors and pads. Dry
the brakes first by braking carefully to re­
store the full brak ing effect.
([) Note
Vehicle components such as the engine,
transmiss ion, suspension or electrical sys­
tem can be severely damaged by driving
through wate r.
@ Tips
- Check the depth of the water before dr iv­
i ng through it.
- Do not stop the veh icle, dr ive in reverse
or switch the engine off when driving
th rough water.
- Keep in mind that oncoming vehicles
may create waves that raise the water
level and make it too deep for you r vehi­
cle to drive th rough safely.
- Avoid dr iving through sa lt water because
i t can ca use corrosion.
Catalytic converter
It is very important that your emission con­
trol system (catalytic converter) is function ­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
11-Always use lead-free gasoline q page 214,
Fuel supply .
"'" Never run the tank down a ll the way to
empty.
11-Never put too much motor oil in your en-
gine
q page 224, ~ Adding engine oil .
11-Never try to push -or tow-start your veh icle .
The catalytic converter is an efficient "clean­ up" device built into the exhaust system of
the vehicle . The catalytic converter burns
many of the pollutants in the exhaust gas be­
fore they are released into the atmosphere .
Drivin g and en vironm ent 195
The exclusive use of unleaded fuel is critically
important for the life of the catalytic convert­
er and proper funct ion ing of the engine.
A WARNING
-
- Do not park or operate the vehicle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other mate rial wh ich can
cause a fir e.
- Do not apply additional undercoating or rustp roof ing on or near the exhaust
manifold, exhaust pipes, catalytic con­
ve rter or heat shields. During driv ing, the
substance used for undercoating co uld
overheat and cause a fire.
(D Note
- Be aware that just one tank filling with
leaded fu el w il l already ser iously de­
gra de the performance of the catalytic
c onverte r.
- Do not ex ceed t he cor rect eng ine oil level
qpage 224.
- Do not drive until the fue l tank becomes
comple tely empty. The engine co uld m is­
fire . Unburned fuel could also get in to
the exhaust system and th is co uld cause
the catalytic converter to overheat .
- Do not turn off the ignition while the ve ­
hicle is moving.
- Do not continue to ope rate your veh icle
unde r these conditions, as otherwise fuel
can reach the catalytic converte r. T his
cou ld result in overheating of the con­
verter, requir ing its replacement.
- To assure efficient operation of the Emis ­
sion Control System:
- H ave you r vehicle maintained prope rly
and in accorda nce w ith the serv ice rec­
ommendat ions in yo ur Warranty &
M ain tenance boo klet.
- L ack of prope r maintenance as we ll as
improper use of the vehi cle w ill impair
the function of the em ission contro l
system and could lead to damage . ..,. •
•

(D Note
Do not leave engine idling unattended af­
ter starting . If warning lights should come
on to indicate improper operation, they
would go unheeded. Extended idling also
produces heat, which could result in over­
heating or other damage to the vehicle or
other property .
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel .
.,. Have your vehicle serv iced at regular inter-
vals .
By having your vehicle regularly serviced by an
author iz ed Audi dealer helps to ensure that it
runs properly and economically . The condition
of your vehicle not only affects its safety and
ab il ity to hold its value, it also affects
fu el
c onsump tion .
C hec k your oil each tim e you fill your t ank .
The amount of oil used is related to engine
load and speed.
It is normal for the oil consumption of a new
engine to reach its lowest value after a certain
mileage has been driven.
You must d rive yo ur vehicle about 3 ,000 miles
(5,000 kilometers) be fore you can properly
assess oi l consumption.
This a lso applies to fuel consumption and en­
g ine output .
0 Note
-Have your vehicle maintained properly
and in accordance wit h the service rec­
ommendat ions i n your Warranty
& Main­
tenance booklet . Lack of proper mainte ­
nance as well as improper use of the ve­
hicle wi ll impair the function of the
emission control system and could lead
to damage.
Dri vin g and en vironm ent 197
-Do not alter or remove any component of
the Emission Control System unless ap­
proved by the manufacturer .
- Do not alter or remove any device, such
as heat shie lds, switches, ignition wires,
valves, which are designed to protect
your vehicle's Emission Control System and other important vehicle compo­
nents .
Fewer short trips
Fuel consumption will always be rela tively
high on short trips .
.,. Try to avoid driving short distances with a
cold engine.
The engine and cata lytic converter have to
reach their opt imal
op erati ng t emper ature to
reduce fuel consumpt ion and noxious emis­
s ions effectively .
Just after starting, a co ld engine in a mid-size
car only achieves a fuel economy of 6-8 mi les
per gallon (30-40 l/100 km). After about a
half a mile, fuel economy climbs to 12 mpg
(20 l/100 km) . After about
2 .5 miles (4 km),
the e ngine is at its proper operat ing tempera­
ture and fue l economy has reached a normal
level. So you can see that you should avo id
short trips whenever poss ible.
T he
outs ide t emp erature is also cr itical in th is
regard. Your car consumes more fue l in the
winter than in the summer.
allroad : Driving offroad
General information
App lies to vehicles : allroad
When d riving offroad, the functions for the
electron ic stabilization control (ESC) are ex­
panded. The ESC -Offroad -Mode can be act ivat ­
ed in driving situations in which a whee l lock
o r a d iffe rential lock function is needed
~ page 188. In addition , you r Audi p rov ides
continuous all wheel drive.
Your Audi i s ho wever, no t an offroad vehicl e.
Nev er drive the vehicle in terrain which i s not
lilJJ,,
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•

200 Trailer towing
Tire pressure
When towing a trai le r, inflate the tir es of your
vehicle to the cold tire pressure listed under
"Full load" on the label located on the driver 's
side B-pillar (visible when the door is open).
Inflate trailer tires to trailer and tire manufac ­
turers' specifications.
Lights
The headlight settings should be checked with
the trailer attached before dr iving off. Check
to make sure both vehicle and tra iler lights
are working properly.
Safety chains
Be sure trailer safe ty cha ins are properly con­
nected from the trailer to the hitch on the ve­
hicle. Leave eno ugh slack in the chains to per ­
mit turning corners. When you install safety
cha ins, make sure they w ill not drag on the
road when you are driving.
The chains shou ld cross under the trai ler
tongue to prevent it from dropping in case of
separation from the hitch.
Driving instructions
Driving with a trailer always requires extra
care and consideration.
To obtain the best possible handling of vehicle
and trai ler, p lease note the following:
.,. Do not tow a loaded trailer when your car it ­
self is not loaded .
.,. Be especia lly careful when passing other
vehicles .
.,. Observe speed limits .
.,. Do not drive at the maximum permissible
speed.
.,. Always apply brakes early.
.,. Monitor the temperature gauge.
Weight distribution
Towing a loaded trai ler with an empty car re­
sults in a highly unstable distribution of
weight . If this cannot be avo ided, drive at very
low speeds only to avoid the risk of losing
steering control. A "ba
lanced'' rig is easier to operate and con­
trol. This means that the tow vehicle should be loaded to the extent possible and permissi­
ble, while keep ing the trailer as light as possi­
ble under the c ircumstances. Whenever poss i­
ble, transfer some cargo to the luggage com ­
partment of the tow veh icle while obse rving
tongue load requ irements and vehicle load ing
considerations.
Speed
The higher the speed, the more d iff icu lt it be­
comes for the driver to control the rig. Do not
drive at the maximum permissible speed. Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -pa rticularly
whe n going downhill.
Reduce veh icle speed
immediately if the trail­
er shows the slightest s ign of sway ing.
Do not
try to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds
for vehicles tow ing trailers are lower than for
regular vehicles .
Always apply brakes early. When driving
downh ill, shift into a lower gear to use the en ­
gine braking effect to slow the vehicle . Use of
the brakes alone can cause them to overheat
and fail.
Coolant temperature
The coolant temperature gauge c> page 10
must be observed carefully . If the needle
moves close to the upper end of the scale, re­
duce speed immediately and/or turn off the
air conditioner.
If the coolant temperature warning light •
in the in strument cluster starts flashing, pull
off the road, stop and let the engine
idle for
abo ut two minutes to prevent heat build-up .
_& WARNING
Anyone not properly restrained in a mov­
in g vehicle is at a much greater risk in an
accident. Never let anyone ride in your car
who is not p roperly wea ring the restraints
provided by Audi.
-

202 Cleaning and protection
Cleaning and protect ion
General information
Regular core preserves vehicle value .
Any automobile is exposed to industrial
fumes, corrosive road salt, etc. A well cared
for Audi can look like new many years after
purchase . Regular and correct care w ill con­
tr ibute to maintaining the beauty and value of
your Aud i.
Furthermore, good care may be a condition
for substantiating a warranty claim should
corrosion damage or paint defects occur.
Your author ized Audi dealer has a variety of
dedicated vehicle-care products and can ad­
vise which ones to use for cleaning the exter i­
or and interior of your vehicle .
Whether you use products recommended by
Audi or other commercially available clean ing
agents, please make sure you apply them cor­
rectly .
A WARNING
-Cleaning agents may be poisonous. Keep
them out of the reach of children.
- Heed all caut ion labels.
- Always read directions on the container
before using any product . Follow the di­
rect ions carefu lly.
- Most chemical cleaners are concentrated
and have to be diluted.
- Use spot removing fluids only in well
ventilated areas.
- Do not use gasoline, kerosene, d iesel
fuel, nail pol ish remover or other volatile
fluids. They may be toxic, flammable or
hazardous in other ways. Do not wash,
wax or dry the vehicle with the ignit ion
on or the engine running.
- Do not clean the undersides of chassis,
fenders, wheel covers, etc. without pro­
tecting your hands and arms. You may cut yourself on sharp-edged metal parts. -
Moisture and ice on brakes may impair
brak ing eff ic iency
c::> page 188. Test the
brakes carefully each time you wash the
veh icle.
@ For the sake of the environment
Select on ly environ mentally friendly clean­
ing products. Leftover cleaning products
should not disposed of in the household
waste .
Care of exterior
Washing
Frequent washing protects the vehicle .
The best p rotection against environmental in ­
fluences is
frequent washing and waxing . How
often this is required depends on:
- How much the veh icle is used
- Where the vehicle is parked (garage, in the
open under trees, etc.)
- The seasona l and weather conditions
- Environmental influences
T he longer b ird droppings, insects, tree resin,
road and industria l gr ime, tar, soot, road salt
and other materials remain on the vehicle body, the more lasting their destructive ef­
fects will be . High temperatures caused by ex­
posure to intense sunlight intensify the corro­
sive effect, particularly when humidity is high as well.
Under certain circumstances,
weekly washing
may be necessary. Under other conditions, a
monthly washing and waxing may be ade­
quate .
After the winter, the underside of the vehicle
should be thoroughly washed, preferably in a
professional car wash.
Vehicles with matte finish paint
c::> page 204.
A WARNING
-A lways read and heed all WARNINGS and
other information
c::> page 202.

222 Check ing and filling
Modern engine lubrication has taken a quan­
tum leap in the last few years. Many synthetic
oils ava ilable today provide better engine lu­
brication that can outlast traditional petrole­
um-based oils, making them a smart choice
for use throughout the life of your Audi .
Whether you use synthetic or petroleum ­
based engine oil, the oil that you use must
conform to Audi 's oil quality standard
VW 502 00 to he lp keep your vehicle's engine
running smoothly and help prevent the for­
mat ion of harmfu l deposits, sometimes called
"sludge ", that ove r time can lead to expensive
repairs .
At the time of pr int ing , engine o ils available in
the U .S . and Canada that meet the exacting
specifi cations of Audi oi l standard VW 502 00
a re synthetic engine oils. This does not mean,
however, that every syn thetic engine oil will
meet Audi oil standard VW 502 00. So always
be sure that you use an approved oil.
To help prevent the format ion of harmful de ­
posits use only oi l with the fo llowing specifi­
cations printed on the oil container :
Audi oil standard VW 502 00
O il container labe ls may carry the specif ica ­
tion s ingly or in comb inat ion with other des ig­
nations and oil qua lity standards .
Viscosity
Engine oi ls are graded according to their vis­
cosity. The proper viscosity grade oil for your
engine depends on cl imactic or seasonal con­
d itions where you drive. You can use oil with a
viscosity grade of SA E SW40 across all tem ­
pe ratu re ranges for normal driving conditions .
However, if eng ine o il viscos ity grade SA E
SW40 is not avai lab le, you can also use viscos­
ity grade SAE SW -30 or SAE OW-40 as long as
it meets Audi o il quality standard VW 502 00
specif ications .
Because engine oil that meets the Audi oil
standard may not be available everywhere
when you need it, we strongly recommend
that you always carry with you an ext ra quart (
li te r) of oil that exp ress ly con forms to the
VW 502 00 spec ification, in case you have to
top
off the oil while on the road.
Only if the level of the o il is a t or be low the
min imum mark -and no oi l that expressly
conforms to Audi oil standard VW 502 00
specifications is available - may you top
off
with a high quality engine o il, preferab ly syn ­
thet ic-based, tha t mee ts ACEA A3 or API SM
specifications, but even then , only in v iscosity
grades SAE SW-40 , SAE SW-30, o r SA E
OW-40. However, dur ing the entire time be­
tween oil change inte rva ls , never top
off with
more than a total of 0.5 q t/ liter engine o il
t h at does not con form to Audi oi l specification
vw 502 00.
For more informa tion about eng ine oi l tha t
has been approved for your veh icle, please
contac t either yo ur authorized Aud i deale r or
Audi C ustome r Re lations at 1 (800) 822 -2834
or visit our web site at www .audiusa.com or
www.aud icanada .ca. Here you w ill also find a
current list of oils (manufacturers, brand
names e tc.) tha t conform to Audi oil s tanda rd
vw 502 00 .
Changing the engine oil
The eng ine oi l and oil fi lter must be changed
according to the mileage (kilometers) and
time intervals specified in your ve hicle's War­
ranty
& Maintenance booklet. Do not exceed
these intervals -harmful deposits from old
engine oil ca n reduce eng ine performance and
can lead to expensive engine repa irs .
Changi ng the oil at the recommended inter­
vals is so very important because the lubricat­ ing proper ties of oil decrease gradually during
norma l veh icle use . If you are not sure when
you have your oil changed, ask your author­ ized Audi Serv ice Adv isor.
Under some circumstances the engine oil
shou ld even be cha nged more frequent ly .
Change oil more often if you drive mostly
sho rt distances, operate the ve hicle in dusty
areas o r most ly unde r stop-and-go t raff ic con-
di tions, o r when you use your vehi cle where .,..

Tires an d wheel s 239
you have stored. The system does not recog ­
nize the load condition of your vehicle.
The effectiveness of the ti re pressu re monitor­
ing sys tem* will be impaired if you store nor ­
mal load pressures but then operate the vehi ­
cle at its maximum load¢,& .
See the illustration ¢
fig. 191 for the location
of the label on dr iver's side B-pillar (co lor of
the actual labe l and exact location on the ve­
hicle wi ll vary slig htly) .
Note that the fo llowing tab le is accurate a t
the t ime o f go ing to press and is subject to
I Model II Tire designation
c h ange. In the event of discrepancies, the ti re
pressure label is located on the driver's side B­
pillar always takes precedence .
T he table below lists the recommended cold
ti re inflation pressures for the Audi mode l
covered by your Owner's Literat ure at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as orig inal
equipment, or as a factory option.
Tire pressure
Engine normal load condition full load condition
A4 S edan:
2.0 liter
4-cylinder
all road:
2.0 liter
4-c ylinder 225
/55 R16 95H
All S eason
245 /45 Rl 7 95H
All Season
245 /40 R18 93Y
High Performan ce
225 /50 Rl 7 94H
All Season
245 /40 R18 93H
All Season
1 255 /35 R19 96Y XL
High Performance
225 /55 Rl 7 97H
All Season
245 /45 Rl8 l00H
All Season
245 /45 R18 96Y
High Performance
245 /40 R19 98V XL
High Performance (up to 3 occupants
)
front rear front rear
I
PSI j[ kPA PSI j[ kPA PSI Jl kPA PSI I[ kPA
32 220 29 200 33 230 35 240
32 220 29 200 33 230 35 240
32 220 29 200 33 230 35 240
•
33 230 30 210 35 2
40 36 250
I
33 230 32 220 36 250 38 260
'
32 220 30 210 35 2
40 35 240
I
30 210 30 210 33 230 36 250
32 220 32 220 33 230 36 250 30 210 30 210 33 230 36 250
32 220 29 200 35 2
4 0
38 260
-• - -. -
•
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...

-Incorrect tire pressures and/or underin­
flation can also lead to sudden tire fa il­
ure, including a blowout and sudden de­
flation, causing loss of vehicle control.
Checking tire pressure
The correct tire pressure for the tires original­
ly installed on your vehicle is listed on the tire
pressure label located on driver's side 8-pil­ lar .
The recommended t ire pressures are on the
tire pressure label and in the table
c:> page 238, Cold tire inflation pressure .Th is
means that the pressure must be checked and
adjusted when the tire has not been driven for
mo re tha n a couple of m iles (k ilome ters) at
l ow speeds during t he p revious three hours.
A ir in the tires expands when the ti re heats up
as a result of inte rna l friction as it flexes in
use. The tire press ure is higher when the tire
has warmed up than when it is "cold."
It is the i nflat ion p ressu re in a "cold" tire that
counts . Therefore, you shou ld never let air ou t
of a warm tire to match "Cold tire inflation pressure" recommendations
c:> page 238. The
tires would then be under inflated and could
fa il suddenly.
The tire press ure labe l on yo ur Audi lists the
recommended cold t ire inflat ion pressures at
maximum capacity for the new, origina l
equ ipment tires that were on your vehicle at
the time it was manufactured. For the loca­
tion of the label
<=> page 238, fig . 191 .
Most tires lose a ir naturally over time. They
can also lose some a ir if you drive
over a pot­
hole or hit a curb while parking. It is usually
not possible to see whether the radial t ires
used today are underi nflated just by looking
at them.
Therefore, be sure to check tire pressures at
least o nce a month and always before going
on a long tr ip . Make sure to take the number
of people and the amoun t of luggage into ac­
coun t when adjusting tire pressure for a t rip -
even one that you would not consider to be
Tire s an d wheel s 241
"long." See c:> page 24 2, Tires and vehicle
load limits
for more important information.
A lways use an acc urat e tire pressu re ga uge
when checking and ad justing infla tion pres ­
s ur es . Check a ll of the tires and be sure not to
forget the spare tire. If the pressure in any t ire
is too h igh when the tire is "cold", let a ir o ut
of the t ire s low ly w ith the edge of the tire
gauge and keep checking the pressure until
you reach the pressure that is correct for the load (passengers and luggage) and k ind of
driv ing you plan to do.
If the pressure in any tire is too low, note the
difference between the pressure in the co ld
t ire a nd the pressure you need and add the air
that you need to reach the correct pressure for
t h e ve hicl e load (passenge rs and luggage) for
the tires on you r veh icle as l isted on the o n
yo ur vehicle and in this ma nual and the kind
of driving you plan to do.
Never exc eed the maximum inflation pr es­
sure li ste d on the tire sidewall for any re a­
s o n.
Remember that the vehicl e manufacture r, not
t h e tire manu fact urer, de termines t he cor re ct
t ir e p ress ure fo r th e tires on your ve hicl e.
It is important to check the t ire p ressu re whe n
the tires are co ld.
- Read the required tire pressure from the t ire
pressure labe l. The t ire pressure label is lo­
cated o n the dr iver's side 8-pillar. The tire
pressure labe l lists the recommended co ld
tire inflation pressures for t he vehi cle at its
maxim um capacity weigh t and t he tires that
were on your ve hicle a t the time i t was man­
ufactured . For recommended tire pressures
for normal load conditions, p lease see chap­
ter
<=> page 238.
-Tu rn the va lve stem cap counter -clockwise
to remove it from the tire
va lve .
-Place t he ai r pressure gauge on the va lve.
- The tire pressu res should o nly be checked
and ad justed when the tires are co ld . The
slightly raised pressures of warm tires must
not be red uced.
Ill>-
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