2009 AUDI S3 service

-------------------------------------------~C::._! h~ i~ ld ~ S~ a~ f~e :_!t tY ~--
restraints and for the different models of the same kind of child
restraint offered by child restraint manufacturers.
The weight ranges for the individual types, makes and models of
child restraints that the NHTSA has specified in the Safety Standard
together with the weight ranges of typ ical infants and typical 1 year­
old child have been stored in the control unit of the Advanced
Airbag System. When a child restraint is being used on the front
passenger seat with a typical 1 year -old child, the Advanced Airbag
System compares the weight measured by the weight sensing mat
with the information stored in the electronic control unit.
The electronic control unit also registers the tension on the front
passenger safety belt. The tension on the safety belt for the front
passenger seat will be different for an adult who is properly using
the safety belt as compared to the tension on the belt when it is
used to attach a child restraint to the seat. The sensor below the
latch for the safety belt for the front seat passenger measures the
tension on the belt . The input from this sensor is then used with the
weight to "decide" , whether there is a child restraint with a typical 1
year-old child on the front passenger seat and whether or not the airbag must be turned off.•
Child restraints and Advanced Airbags
Regardless of the child restraint that you use, make sure that it has
been certified to meet United States Federal Motor Vehicle Safety
Standards and has been certified by its manufacturer for use with
an airbag. Always be sure that the chi ld restraint is properly
installed at one of the rear seating positions. If in exceptiona l
circumstances you must use it on the front passenger seat, carefully
read all of the information on child safety and Advanced Airbags
and heed a ll of the applicable WARNINGS. Make certain that the
child restraint is correctly recognized by the weight -sensing mat
inside the front passenger seat, that the front passenger airbag is
turned off and that the airbag status is always correctly signaled by
th e
PASSENGER AIR BAG OFF light .
Controls and equip­
ment Safety first Vehicle operation
Many
types and models of child restraints have been available over
the years, new mode ls are introduced regularly incorporating new
and improved designs and older mode ls are taken out of produc­
tion. Child restraints are not standardized . Child restraints of the
same type typically have different weights and sizes and different
'footprints,' the size and shape of the bottom of the chi ld restraint
that sits on the seat, when they are installed on a vehicle sea t. These
differences make it virtual ly impossible to certify comp liance with
the requirements for advanced airbags with each and every child
restraint that has ever been sold in the past or will be sold over the
course of the usefu l life of your vehic le.
For this reason, the United States National Highway Traffic Safety
Administration has pub lished a list of specific type, makes and
models of child restraints that must be used to certify compliance
of the Advanced Airbag System in your vehicle with the suppression
requirements of Federal Motor Vehicle Safety Standard 208. These
child restraints are:
A. Car beds, manufactured on or after September 1,
2004:
• Cosco Dream Ride 02-719
B. Rear facing child restraint systems, manufactured
on or after September 1, 2004:
(When the restraint system comes equipped with a removable base,
compliance has to be certified with or without the base) .
• Britax Handle with Care 191
• Century Assura 4553
• Century Smart Fit 4543
• Cosco Arriva 02727
• Evenflo Discovery Adjust Right 212
• Evenflo First Choice 204
• Graco lnfant8457
Vehicle care Do-it-yourself service Technical data

Child Safety -
--------------------''---
& WARNING
Not using a child safety seat, using the wrong child safety seat or
improperly installing a child restraint increases the risk of serious
personal injury and death .
• All vehicle occupants and especially children must always be
restrained properly whenever riding in a vehicle .
- An unrestrained or improperly restrained child can be injured or killed by being thrown against the inside of the vehicle or by
being ejected from it during a sudden maneuver or impact.
- An unrestrained or improperly restrained child is at much
greater risk of injury or death by being struck by an inflating
airbag.
• Commercially available child safety seats are required to
comply with U .S . Federal Motor Vehicle Safety Standard (FMVSS l
213 (in Canada CMVSS 213).
-When buying a child restraint , select one that fits your child
and the vehicle .
- Only use child restraint systems that fully contact the flat
portion of the seat cushion. The child restraint must not tip or
lean to either side . Audi does not recommend using child safety
seats that rest on legs or tube -like frames . They do not provide
adequate contact with the seat .
- Always heed all legal requirements pertaining to the installa ­
tion and use of child safety seats and carefully follow the
instructions provided by the manufacturer of the seat you are
us ing .
• Never allow children under 57 inches {1 .5 meters) to wear a
normal safety belt . They must always be restrained by a proper
child restraint system . Otherwise , they could sustain injuries to
the abdomen and neck areas dur ing sudden braking maneuvers or
accidents.
• Never let more than one child occupy a child safety seat .
Controls and equip­ ment Safety first
Vehicle operation
& WARNING (continued )
• Never let babies or older children ride in a vehicle while sitting
on the lap of another passenger .
- Holding a child in your arms is never a substitute for a child
restraint system .
- The strongest person could not hold the child with the forces
that exist in an ac cident. The child will strike the interior of the
vehicle and can also be struck by the passenger .
- The child and the passenger can also injure each another in
an accident.
• Never install rear-facing child safety seats or infant carriers on
the front passenger seat . A child will be seriously injured and can
be killed when the passenger airbag inflates - even with an
Advanced Airbag System .
• The inflating airbag will hit the child safety seat or infant
carrier with great force and will smash the child safety seat and
child against the backrest , center arm rest , door or roof .
• Always install rear-facing child safety seats or infant carriers on
the rear seat .
• Forward -facing child safety seats installed on the front
passenger 's seat can interfere with the airbag when it inflates and
cause serious injury to the child. Always install forward -facing
child safety seats on the rear seat .
• If exceptional circumstances require the use of a forward­
facing child restraint on the front passenger's seat , the child's
safety and well-being require that the following special precau ­
tions be taken :
- Make sure the forward -facing seat has been designed and
c ertified by its manufacturer for use on a front seat with a
passenger front and side airbag.
- Always carefully follow the manufacturer's instructions
provided with the child safety seat or carrier.
Vehicle care Do-it-yourself service Technical data

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child is available. In these exceptional situations, the use of a lap
belt is bet ter than perm it t ing the chi ld to remain totally unre ­
strained . But remember: a lap be lt cannot provide the same level of
protection as a proper child restraint or a three -point lap and
shoulder belt if the child is big enough . Also, using a lap belt for
younger child ren, who should be using a chi ld restraint, may vio late
laws in your state o r Province .
Never use a lap belt a lone to res train a chi ld tha t weighs less than
about 80 lbs (36 kg) a nd who is less than 4'9" tall. A lways remember
that children do not have the pronounced pelvic structure required
for the pro per func tion of lap belts . If a lap bel t is only restrain t
system available, then the chi ld's safety absolutely requires that the
lap be lt be fas tened snugly a nd as low as possible arou nd the pe lvis
let a lap belt pass over the chi ld's stomach or abdomen .
& WARNING
Using wrong child rest raints or improperly installed child
restr aint s can cau se seriou s personal injury or death in a crash.
• Fa ilu re to properly ro ute safety belts over a child's body will
c au se severe injuries in a cra sh. The lap belt portion of the three
point belt a s well a s an y lap belt alone mu st always pas s as low a s
possible acros s the pelvi s, never over the stomach or abdomen .
• An improperly worn safet y belt will not pro vide the best protec ­
tion in a cra sh and may cause seriou s personal injury . Always
ma ke sure that children and other vehi cle occupants p rope rly
wear available restraint systems . C arefully follow the instructions
provided by the manufacturers of child re straints . •
Controls and equip­ ment Safety first
Vehicle operation
Installing a child safety seat
Securing a child safety seat using a safety
belt
Sa fety belts for the r ear seats an d the fr ont passenger con
be locked with the convertible locking retractor to prop­
erly secure child safety seats .
The safety belts eme rgency locking retractors for the rear seats
safety belts and for the front passenger's seat safety belt have a
convertible locking ret ractor for child rest raints . The safety belt
must be locked so that belt webbing cannot unreel. T he ret ractor
can be activated to lock the safety be lt and prevent the safety be lt
webbi ng fro m loosen ing up dur ing norma l driving . A child sa fety
seat can on ly be properly installed when the safety belt is locked so
that the child a nd ch ild safety seat will s tay i n place .
A lways remember: Even though your vehic le is equipped with an
Advanced A irbag system, all child ren, espec ially those 12 years and
younger , should a lways ride in the back seat properly restrained for
their age and size.
& WARNING
Improperly installed child safety seat s increase the risk of serious
pe rsonal injury and death i n a collision.
• Always make sure that the safety belt retractor i s locked when
in stalling a child safety seat. An unlocked safety b elt retracto r
cannot hold the child safety seat in pla ce during normal driving or
in a cr ash.
• Always buckle the child safety seat firmly in place even if a
c hild i s not sitting in it . A loo se ch ild safety seat can fly around
durin g a sudden stop or in a collision .
• Always make su re that the re ar se at ba ckrest to which the
center rear safety belt is atta ched is se curely latched wh enever
the re ar center safety belt is being u sed to se cur e a child re stra int .
9)1,
Vehicle care Do-it-yourself service Technical data

_______________________________________________ C_h _ i_ld _ S_ a_ f_ e_ t..,:c y __ lllll
& WARNING
Rearward-facing child restraints:
• A child in a rearward-facing child safety seat installed on the
front passenger seat will be seriously injured and can be killed if
the front airbag inflates -even with an Advanced Airbag System.
• The inflating airbag will hit the child safety seat or infant
carrier with great force and will smash the child safety seat and
child against the backrest, center arm rest, door or roof.
• Always be especially careful if you must install a rearward
facing child safety seat on the front passenger seat in exceptional
circumstances.
• A tight tether strap on a rearward-facing child restraint
attached to the front passenger seat can put too much pressure
on the weight-mat in the seat and register a heavier weight in the
Advanced Airbag System. The heavier weight registered can make
the system work as though an adult were on the seat and deploy
the Advanced Airbag when it must be suppressed causing serious
or even fatal injury to the child.
• Make sure that the PASSENGER AIR BAG OFF light comes on
and stays on all the time whenever the ignition is switched on.
• If the PASSENGER AIR BAG OFF light does not come on and stay
on, immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
authorized Audi dealer. •
Activating the convertible locking retractor
Use the convertible locking retractor to secure a child
restraint.
Always heed the child safety seat manufacturer's instruc ­
tions when installing a child restraint in your vehicle. To
activate the convertible locking retractor:
Controls and equip­ ment Safety first
Vehicle operation
-Place the child restraint on a seat, preferably on the rear
seat.
- Slowly pull the belt
all the way out.
- Route it around or through the child restraint belt path
~& -
- Push the child safety seat down with your full weight to
get the safety belt really tight .
- Insert the belt tongue into the buckle for that seating
position.
- Guide the safety belt back into the retractor until the belt
lies flat and snug on the child safety seat.
- You should hear a "clicking" noise as the belt winds back
into the inertia reel. Test the convertible locking retractor
by pulling on the belt. You should no longer be able to
pull the belt out of the retractor. The convertible locking
retractor is now activated.
- Make sure that the red release button is facing away from
the child restraint so that it can be unbuckled quickly.
- Pull on the belt to make sure the safety belt is proper ly
tight and fastened so that the seat cannot move forward
or sideways more than one inch (2.5 cm).
& WARNING
Using the wrong child restraint or an improperly installed child
restraint can cause serious personal injury or death in a crash.
• Always make sure that the safety belt retractor is locked when
installing a child safety seat. An unlocked safety belt retractor
cannot hold the child safety seat in place during normal driving or
in a crash. ..
Vehicle care Do-it-yourself service Technical data

_______________________________________________ C_h _ i_ld _ S_ a_ f_ e_ t..,:c y __ lllll
(The term "ISOFIX" regarding lower anchorages had been used by
Audi and other manufacturers in the past, but LATCH is now the
standard name for the new child restraint anchorage system.)
Some child restraint system manufacturers have been providing
tether straps on certain models of their child restraint systems, either as standard equipment or as a retrofit, for several years .
Check with the manufacturer of the child restraint system for tether
strap availability .
To provide a simpler and more practicable way to attach the child
restraint system on the vehicle seat, U.S. Federal regulations require
the phase -in of lower anchorages in vehicles and devices on new
child restraint systems to attach to the vehicle anchorages.
Child restraint system manufacturers will probably offer two kinds
of lower anchorages on their child safety seats
They could come with:
• hooks or other latches attached to adjustable straps or
• rigid latches on bars that extend out the back of the child
restraint and are released with release buttons at the bottom of the
child restraint.
In addition to the LATCH lower anchorages, both of these child
restraint systems use tether straps to help keep the child restraint
system firmly in place .•
Where can I get additional information about
child restraint application and usage?
There are a number of sources of additional information about child
restraint selection, installation and usage :
NHTSA advises that the best child safety seat is the one that fits
your child and fits in your vehicle, and that you will use correctly and
consistently.
Try before you buy!
Controls and equip­ ment Safety first Vehicle operation National Highway Traffic Safety Administration
Tel.: (888) DASH -2 -DOT
www.nhtsa .dot .gov
National SAFE KIDS Campaign
Tel.: (202) 662 -0600
www.safekids.org
Safety BeltSafe U.S.A
Tel.: (800) 745-SAFE (English)
Tel.: (800) 747 -SANO (Spanish)
www.carseat .org
Transport Canada
Tel.: (888) 333-0371
www.tc.gc.ca
Audi Client Relations
Tel.: (800) 822-2834 •
Vehicle care Do-it-yourself service Technical data

_______________________________________________ C_h _ i_ld _ S_ a_ f_ e_ t..,:c y __ JIIII
- Guide the upper tether strap under the rear head
restraint ~
page 188, fig. 162 (raise the head restraint if
necessary).
- Tilt the recess flap-detail view-~
page 188, fig. 162 up to
expose the anchor bracket.
- Slide the tether strap hook over the anchor bracket.
- Pull on the tether strap hook so that the spring catch of
the hook engages.
- Tighten the tether strap firmly following the child
restraint manufacturer's instructions.
Releasing the tether strap
- Loosen the tension following the child restraint manufac ­
turer's instructions.
-Depress the spring catch on the hook and release it from
the tether anchor .
& WARNING
Always read and heed all WARNINGS .
0 Note
If you leave the child restraint with the tether strap firmly installed
for several days, this could leave a mark on the upholstery on the
seat cushion and backrest in the area where the tether strap was
installed. The upholstery would also be permanently stretched
around the tether strap . This applies especially to leather seats .•
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

actual vehicle behavior. If the two do not match, for example when
th e vehicle begins to skid, ESP brakes the appropriate wheel auto­
matical ly .
The vehicle is stabilized again by the forces acting on the wheel
during braking. With an oversteering vehicle (tendency for the rear
end to skid out of the curve), the brake application is mainly at the
front wheel on the outside of the curve, with an
understeering
vehicle (tendency to run wide in the curve) at the rear wheel on the
inside of the curve or additionally at the other wheels as needed.
This brake application is accompanied by noises.
ESP works in conjunction with ABS=>
page 194. If there is malfunc ­
tion in the ABS, ESP is also inoperative.
Activating
The ESP is automatica lly activated when the engine is started, and
it performs a self-test. As soon as the test is completed, the system
is in normal operating mode. With ASR deactivated, or with ESP/ASR
deactivated, pressing the button=>
page 190, fig. 163 returns the
system to normal operation.
Deactivating
ESP should normally be activated at all times because this ensures
optimum vehicle stability. Only in certain exceptional cases it does
make sense to deactivate Anti-Slip Regulation (ASR) or the Elec­
tronic Stability Program (ESP) by pressing the button =>
page 190,
fig. 163. Both deactivation stages can only be activated from normal
mode .
Deactivating ASR
Tap the switch . Deactivation is indicated by slow flashing of the ESP
lamp in the instrument cluster. In certain situations (e .g. driving
with snow chains, in deep snow or on loose ground, or when
rocking the car free), it may be necessary to deactivate ASR.
Deactivating ESP/ASR
Press the button for more than 3 seconds. Deactivation is indicated
by the ESP lamp in the ins trument cluster staying on permanently .
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
This
deactivates the Electronic Stability Program (ESP) in addition to
ASR. No Elec tronic Stability System operation and no Anti -Slip
Regulation is available across the entire speed range; ASR and ESP
are activated only when the brakes are used for the duration of the
braking action and remain active until a stable vehicle condition has
been reached. There is no driving situation which requires ESP to be
deactivated, so this should only be done if the driver's skill and the
traffic situation permit.
& WARNING
• The limits of physics cannot be suspended by ESP. Even in vehi­
cles with ESP. you should always adapt your driving to road and
traffic conditions. This is particularly true on a slippery and wet
road . Do not be tempted by the increased safety provided to take
risks -danger of an accident!
• Please note that when ASR or ESP /ASR is deactivated , the drive
wheels can spin on icy and slippery roads and the vehicle can
break away -danger of skidding!
[ i ] Tips
In the event of a defect in Audi magnetic ride, it can happen that
ASR and ASR/ESP cannot be deactivated, or they are activated auto ­
matically in the deactivated state.
Electronic differential lock (EDL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The electronic differential lock (EDU helps the car to start moving,
accelerate and c limb a gradient on surfaces providing poor or
a lmost no grip . Without EDL , this would be difficult, if not impos ­
sib le.
Vehicle care Do-it-yourself service Technical data

How the ABS system works
An aut omatic check is made whe n a speed of ab out 4 mph (6 km/h)
is reached. When this happens, a pumping noise can be heard.
I f an individua l wheel begins to rotate too slowly in relation to
ve hicle speed and ten ds to lock, the A BS automatical ly reduces
brake pressure to prevent that wheel from locking.
T his auto matic adjust ment p rocess wil l cause a
slight vibration o f
the brake peda l and some noises to alert you that veh ic le speed
must be ada pted to e xisting roa d and traff ic c onditions.
& WARNING
Although the ABS is very effective , always remember that braking
c apability is limited by tire tra ction . Always adjust your driving
speed according to the road and traffic conditions. Do not let the
extra safety afforded by the ABS tempt you into taking e xtra risks .
The ABS cannot overcome the laws of physics.
[ i ) Tips
• I f ABS is not functioning properly, a warning light wil l come on.
See
=> page 16.
• I f a fau lt occurs in the ABS, the E DL is als o not fu ncti onin g. This
is indicated by the ABS warning light. •
Brake assistant
The brake a ssi st ant is de sig ned to a chieve th e opti mum
b ra kin g eff ec t.
The brake assistant helps to increase the effective braking power
and thus to ac hieve a s horte r stop ping dis tance. If the drive r
presses the brake pedal very quick ly, the brake assistant automati ­
ca lly b oosts the braki ng force to the maximu m level, up to th e point
where the anti -loc k brake function (A BS) intervenes to stop the
whee ls from loc king. You should then keep the brake pedal pressed
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
until
the vehicle has braked to the required speed . The brake assis ­
t an t swi tc h es itse lf o ff as s oon as you r eleas e the b rake pe dal.
The brake assistant wi ll not be operative if there is a malfunction in
the ABS .
& WARNING
Please remember that the accident risk always increases if you
drive too fast , espe cially in corners or on a slippery road , or if you
follow the vehicle ahead of you too closely . An increased accident
risk cannot be compensated even by the brake assistant , so
always maintain a safe speed. •
ciectro-mechanical power assist
Th e e le ctr o-me ch anic al pow er assis t helps the driv e r
w hen steerin g.
The degree of powe r ass ist is electronically matched to veh icle
speed .
The power steering system assists the driver so that he can steer the
ve hicle with re d uced p hysi ca l eff ort.
Power steering w ill not work if the eng ine is off . As a result, the
stee ring whee l wi ll be ha rd to turn .
& WARNING
If the system develops a problem , you must seek qualified profe s­
sional assistance .
0 Note
If there is an electronic ma lfunction, servotronic will still function
like a conventi onal power s teer ing sy stem , pr ovi din g a constant
steerin g support force that is no longer proportionate to the vehicle
Vehicle care Do-it-yourself service Technical data