service AUDI S3 2011 Repair Manual

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Airbag system
Important things to know
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints. For airbags to
do their job, occupants must always properly wear their
safety belts and be in a proper seating position.
For your safety and the safety of your passengers, before
driving off, always:
- Adjust the driver's seat and steering wheel properly
=>
page 126,
- Adjust the front passenger's seat properly=> page 74,
-Wear safety belts properly=> page 138,
-Always properly use the proper child restraint to protect
children=>
page 167.
In a collision, airbags must inflate within the blink of an eye and with
considerable force. The supplemental airbags can cause injuries if the
driver or the front seat passenger is not seated properly. Therefore in
order to help the airbag to do its job, it is important, both as a driver
and as a passenger to sit properly at all times.
By keeping room between your body and the steering wheel and the
front of the passenger compartment, the airbag can inflate fully and
completely and provide supplemental protection in certain frontal
collisions =:,
page 126. For details on the operation of the seat
adjustment controls=>
page 75.
It 's especially important that children are properly restrained
=:,
page 167.
Controls and equip­ ment Safety first Vehicle operation
There
is a lot that the driver and the passengers can and must do to
help the individual safety features installed in your Audi work
together as a system .
Proper seating position is important so that the front airbag on the
driver side can do its job. If you have a physical impairment or condi­
tion that prevents you from sitting properly on the driver seat with
the safety belt properly fastened and reaching the pedals, or if you
have concerns with regard to the function or operation of the
Advanced Airbag System, please contact your authorized Audi dealer
or other qualified workshop , or call Audi Customer CARE at 1-800-
822-2834 for possible modifications to your vehicle.
When the airbag system deploys, a gas generator will fill the airbags,
break open the padded covers, and inflate between the steering
wheel and the driver and between the instrument panel and the front
passenger . The airbags will deflate immediately after deployment so
that the front occupants can see through the windshield again
without interruption.
All of this takes place in the blink of an eye, so fast that many people don't even realize that the airbags have deployed . The airbags also
inflate with a great deal of force and nothing should be in their way
when they deploy . Front airbags in combination with properly worn
safety belts slow down and limit the occupant's forward movement .
Together they help to prevent the driver and front seat passenger
from hitting parts of the inside of the vehicle while reducing the
forces acting on the occupant during the crash. In this way they help to reduce the risk of injury to the head and upper body in the crash .
Airbags do not protect the arms or the lower parts of the body.
Both front airbags will not inflate in all frontal collisions . The trig­
gering of the airbag system depends on the vehicle deceleration rate
caused by the collision and registered by the electronic control unit.
If this rate is below the reference value programmed into the control
unit, the airbags will not be triggered, even though the car may be
badly damaged as a result of the collision . Vehicle damage, repair
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Child restraints on the front seat - some
important things to know
- Be su re to re ad t he i mpo rt a nt i nfo rmation a nd head the
WA RNINGS fo r i mporta nt details about chil dre n and
Advanced Airbags ~
page 167.
Even t hough your ve hicle is eq uipped with an Advanced Airbag
System, ma ke ce rtain that a ll chi ld ren, especia lly those 12 years an d
younger, always r ide in the back seat prope rly rest rained fo r th eir age
and si ze. The airbag on the passenger side makes the front seat a
po tentially da ngerous place fo r a child to r ide. The fro nt seat is not
the safest place for a ch ild in a forward-facing child safety seat. It can
be a very dange rous place fo r an i nfan t or a child in a rearward-fac ing
seat.
Th e Advanced Ai rbag System in your vehicle has been cer tified to
comply with the req uirements of Un ited States Federa l Moto r Veh icle
Sa fety Standard 208 as applicable at the time your vehicle was manu­
factured.
The Standard requires the front airbag on the passenger side to be
tu rne d off ("s uppressed") if a c hild up to abou t one ye ar of age
restra ined in o ne of the rear -facing or forward -fac ing infant
restra ints listed in Federa l Moto r Vehicle Safety Standard 208 with
whic h the Advanced Airbag System in yo ur vehicle was cert ified has
been installed on the front passenger seat. For a listing of the ch ild
restra in ts that were used to certify compliance with the US Saf ety
Standard =>
page 169.
The PASSENGER AIR BAG OFF ligh t in th e in st rume nt p anel t ells you
when the front Advanced A irbag on the passenger side has been
tur ned off by the ele ct ronic con trol uni t.
Each time you t urn on the ignition, t he
PASSENGER AIR BAG OFF
light will come on for a few seconds and:
• will stay on if th e front passenger se at is no t oc cupie d,
Controls and equip­
ment Safety first
Vehicle operation
• will stay on if there is a small ch ild or child restra int on the front
p assenge r se at,
• will go off if the front passenger seat is occup ied by an adult as
reg iste red by t he weight -sens ing mat =>
page 156, "M oni tor ing t he
Advanced Airbag System" .
T he
PASSENGER AIR BAG OFF light comes o n when t he control unit
de tects a total weight on t he front passenger seat that req uires the
front airbag to be t urned off .
If th e total weight o n the front passenger seat is more than th at of a
typical 1 year-o ld child but less than the weight of a small adult, the
fr on t a ir bag on the passenge r si de c an deploy (t he
PASSENGER AIR
BAG OFF
light does not come on) . If the PASSENGER AIR BAG OFF
light does not come on, the front airbag on the passenger side has
not been turned off by the electronic co ntrol unit and can deploy if
the control unit senses an impact t hat meets the conditions stored in
its memory.
For example, the airbag may deploy if:
• a small child that is heavier than a typical 1 year -old child is on the
front passenger seat (regard less of whether the chi ld is in one of the
child safety seats listed =>
page 169), or
• a child who has outgrown child restraints is on the front passenger
sea t.
If the fro nt passenger a irbag is tur ned off, the
PASSENGER AIR BAG
OFF
lig ht comes on in the instr ument cluster an d stays on.
Th e fron t airbag on t he pa sse nger side may
not dep loy (t he
PASSENGER AIR BAG OFF light does not illum inate and stay lit) even
if a small a dult or teenager, o r a passenger who is no t sitti ng upright
with their back against a non-reclined backrest w ith the ir feet on the
vehicle floor in front of the seat is on the front passenger seat
=>
page 126, " P roper seat ing pos itio n for the dr iver".
If the front passenger ai rbag dep loys, the Federal Standard requires
t he a irbag to mee t the "low risk" deployme nt cr iter ia to reduce the
risk of inj ury through interaction with the a irbag. "Low r isk" deploy­
me nt o ccurs in those cras hes t hat tak e pla ce a t lower decelerat io ns as
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Vehicle care Do-it-yourself service Technical data

& WARNIN G (con tinued )
• Imprope r in stall ation of child re straints can redu ce their effec·
tiveness or even prevent them from providing any protection.
• An improperl y installed child restraint c an interfere with the
airbag a s it deploy s and seriously injure or even kill the child - even
with an Advanced Airbag Sy stem.
• Always carefully follow the manufacturer 's instruct ions
provided with the child safety seat or carrier.
• Never place additional items on the seat that can increase the
total weight regi stered by the weight-sen sing mat and can cause
injury in a crash .•
Front airbags
Description of front airbags
T he airbag system can p rovide supplemental protection
to properly r estrained front se at oc cupants .
Safety first
Fig . 136 Locatio n of
drive r airb ag : in
s tee ring whee l
Vehicle OP-eration
'l
-- -
Airbag system
Fig . 1 37 Locati on of
fr on t pass enge r's
a ir bag: in the instru ­
me nt pa nel
Yo ur vehicle is equi pped with an "Advanced A irbag Syst em" in compli ­
ance with United States Fe dera l Moto r Vehicle Safety Sta ndard
(FMVSS) 2 08 as a pplicable at t he time your vehi cle was manufac­
t u red . The safety belts fo r th e front seats have "p retensioners" t hat
help to ta ke slack out of the bel t sy ste m. The pre tension ers are also
act ivated by the electronic control unit for the airbag system .
Th e front sa fe ty bel ts also have lo ad limi ters to help red uce the fo rces
applied to the body in a crash.
Th e airbag for the driver is in t he steering whee l hub ~ fig .
136 and
t h e airbag for th e front pass enger is i n the inst rum ent pa nel
~ fig. 13 7 . The general locat ion of the airbags is marked "AIRBAG".
Th ere is a lo t you nee d to know abo ut the air bags in your vehicle. We
urge yo u to read the detai led information about airbags , safety be lts
and c hild s afety in this and the other chap ters that make up the
own er's literature. Please be sure to heed the WAR NIN GS· they are
extremely importan t for your safety an d the sa fe ty of your p asse n­
gers, es pecially infants a nd sma ll ch ildre n.
& WARNING
Never rely on airbags alone for protection.
• Even when they deploy, airbags provide only supplemental
protection.
Vehicle care Do-it-yourselt service iTechnical data

Airbag system -----------------=--=---
re stra ined in o ne of th e re a r-f acing or forward-fac ing inf ant
res traints (listed in F ed era l M oto r V ehicl e Sa fe ty Stand ard 2 08 wi th
w hich t he Adva nced Ai rbag System in your ve hicle was c ert ifi ed), th e
front a irbag on the passen ge r side may o r may not dep loy.
Th e
PASSENGER AIR BAG OFF ligh t com es on whe n the ele ctronic
cont rol u nit detects a tota l wei ght on t he front passenger seat that
re qui res th e fr ont a irbag to b e turned off.
If the PASSENGER AIR
BAG OFF
lig ht does not come on, the fro nt airbag o n the passenger
s ide has not bee n turned off by th e c ontro l un it an d can d ep loy i f the
cont rol unit senses an impact that meets t he conditions stored in its
memory.
I f th e tota l w eight on th e fro nt passenger sea t is mor e t han that of a
ty pical
1 yea r-o ld, but less tha n th e weight of a sma ll adult, t he front
a ir bag o n the pa ssenge r si de m ay de ploy (t he
PASSENGER AIR BAG
OFF
lig ht does not come on).
For example, the airbag may deploy if:
• a small child tha t is heav ier th an a typi cal 1 year-old child is on the
front passenger seat (regard less of whet he r the c hild is in o ne o f th e
c hild safe ty seats listed~
pag e 169),
• a child who has outgrown child rest raints is on the front passenger
seat .
If the front passe nger a irbag is turned off, the
PASSENGER AIR BAG
OFF
ligh t in the center of the i nstru me nt pan el will co m e on an d sta y
on .
Th e f ront a irba g on the passenger side may
not dep loy (the
PASSENGER AIR BAG OFF li ght does no t illum inate and s tay lit) if:
• a small adult or teenager is on the front passenger seat
• a pass enger w ho is no t si tting upri ght w it h t heir ba ck again st a
non-recline d backrest with their feet on t he vehicle floo r in front of
t he seat i s on the fro nt pa ssenge r seat .
If the fro nt passenger airbag deploys, the Federa l Standard req uires
t he a irbag to mee t the " low r is k" deployme nt crit er ia to hel p r educe
the risk of injury through interaction with t he a irbag. "Low r isk"
Controls and equip­
ment Safety first Vehicle operation
dep
loyme nt occ urs in those c rashes that ta ke place at lowe r decele r­
at ions as de fined in t he ele ct roni c cont rol uni t~
page 15 6.
Always remember: Even t hough your veh icle is equip ped with
Advanced Airbags, t he sa fest place for children is properly restraine d
on the ba ck sea t. Ple ase be sure to rea d the impor tant in forma tion i n
t he sections that follow and be su re to heed all of the WAR NINGS .
& WARNING
To reduce the risk of injury when an airbag inflates, always wear
safety belts properly .
• If you are unrestrained, leaning forward, sitting sideways or
out of position in any way, your risk of injury is much higher .
• You will also receive serious injurie s and could even be killed if
you are up against the airbag or too close to it when it inflates -
even with an Advanced Airbag~
page 145.
& WARNING
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 .
• Although the Advanced Airbag System in your vehicle is
designed to turn off the front airbag when a rearward-facing child
restraint has been installed on the front passenger seat, nobody
can absolutely guarantee that deployment is impossible in all
conceivable situations that may happen during the useful life of
your vehicle .
• The inflating airbag will hit the child safety seat or infant
c arrier with great force and will smash the child safety seat and
child against the backrest, center armrest , door, or roof.
• Always install rearward-facing child restraints in the back seat.
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and the PASSENGER AIR BAG OFF light does not come on and stay on , _,.
Vehicle care Do-it-yourself service Technical data

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• A se nsor in the safety belt latch for the d river a nd fo r th e front
sea t passenge r that senses w heth er that sa fe ty bel t is la tched or no t
and tra nsmits this information to t he e lectron ic co ntrol un it.
& WARNING
Damage to the front passenger seat can prevent the front airbag
from working properly.
• Imprope r repair or disassembly of the front passenger and
driver seat will prevent the Advan ced Airbag System from func­
tioning properly.
• Repairs to the front passenger seat must be performed by qual­
ified and properly trained workshop personnel.
• Never remove the front passenger or driver seat from the
vehicle.
• Never remove the upholstery from the front passenger seat.
• Never disassemble or remove parts from the seat or disconnect
wires from it .
• Never carry sharp objects in your pockets or place them on the
seat. If the weight-sensing mat in the passenger seat is punctured
it cannot work properly .
• Never carry th ings on your lap or carry objects on the passenger
seat . Such items can increase the weight regi stered by the weight­
sensing mat and send the wrong information to the airbag control
unit.
• Never store items under the front passenger seat. Parts of the
Advanced Airbag System under the passenger seat could be damaged, preventing them and the airbag system from working
properly.
• Never place seat covers or replacement upholstery that have
not been specifically approved by Audi on the front seats .
• Seat covers can prevent the Advanced Airbag System from
recognizing child restraint s or occupants on the front passenger
seat and prevent the side airbag in the seat backrest from
deploying properly .
Controls and equip­ ment Safety first Vehicle operation
& WARNING
(co ntinued )
• Never use cushions , pillows, blankets or similar items on the
front passenger seat . The additional padding will prevent the
weight-sensing mat in the seat from accurately registering the
c hild restraint or person on the seat and prevent the Advanced
Airbag System from functioning prope rly.
• If you must use a child restraint on the front passenger seat
and the child restraint manufacturer's instructions require the use
of a towel, foam cushion or something else to properly pos ition
the child restraint, make certain that the PASSENGER AIR BAG
OFF light come s on and stays on whenever the child re straint is
installed on the front passenger seat.
• If the PASSENGER AIR BAG OFF light does not come on and
stay on, immediately install child restraint in a rear seating posi­
tion and have the airbag system inspe cted by your authorized Audi
dealer. •
How the Advanced Airbag System
components work together
T he front Advanced A irbag System and the side airbags sup plement
t he p ro tect io n offered by the front three-po int safety belts w ith
pretens io ners and load limiters and t he adjustable head restra ints to
help red uce the risk of injury in a w ide range of acci den t and cras h
sit uat ions. Be sure to read the important informat ion about safety
and hee d the WAR NINGS in this ch ap ter.
Deployme nt of the Adva nced A irbag System and the act ivation of t he
safety belt pretens ione rs depen d on the dece le ration measure d by
the crash sensors a nd reg istered by the e lectro nic contro l un it . Crash
sever ity depends on speed and decele ration as well as the mass and
st iff ness of t he ve hicle or object invo lved in the cras h.
Whe n the electronic contro l unit registers a low sever ity crash and
t he safety be lt is being used , the air ba g w ill not dep loy . If the safety
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lower parts of the body . Front a irbags s upplement the t hree-poi nt
sa fety belts o nly in some fro ntal collis ions in which the vehicle decel­
eration is high enough to dep loy the a irbags .
Front airbags will not deploy:
• if the ignition is switched off when a crash occurs,
• in s ide collisions ,
• in rea r-end collisions,
• in rollovers,
• when the crash decelerat io n me asured by the a irbag system is less
than the min imum threshold needed for a irbag deployment as reg is­
tered by the e lectron ic con trol un it.
The front passenger airbag also will not deploy:
• when the fron t passe nger seat i s not oc cupied,
• when the weight on the front passenger seat as sensed by the
Advanced Ai rbag System in dicates that the front airbag o n the
passenger side has to be turned off by the e lectronic control unit (the
PASSENGER AIR BAG OFF li ght comes on and stays on).
& WARNING
Sitting in the wrong position can increase the ri sk of ser iou s injury
in crashes.
• To redu ce the risk of injury when the airbags inflate, the driver
and pas sengers mu st always sit in an upright position , mu st not
lean against or place any part of th eir body too close to the area
where the airbags are lo cated.
• Occupants who are unbelted, out of position or too close to the
airbag can be seriou sly injured by an airbag a s it unfolds with
great force in th e blink of an eye =>
page 147 .
Controls and equip­ ment Safety first Vehicle operation
& WARNING
A child in a rearward-facing child
safety se at installed on the front
pa sseng er seat will be seriously injured and can be killed if the
front airbag inflat es - ev en with an Ad van ced Airbag System .
• The inflating airbag will hit the child safety seat or infant
c arrier with great force and will smash the child safety s eat and
c hild against the backre st, center armre st, d oor or roof .
• Always install rear -facing child safet y seats on the rear seat.
• If you must install a rearward facing child safety seat on the
front passenger se at because of e xceptional circumstances and
the PASSENGER AIR BAG OFF light do es not come on and stay on ,
immediately install the rear -facing child s afety seat in a rear
s eating po sition and h ave the airbag system inspe cted by your
authoriz ed Audi d ealer.
& WARNING
Object s between you and the airbag will increase th e risk of inju ry
in a cra sh by int erfering with the way the airb ag unfold s or by
being pushed into you as the airbag inflates.
• Never hold things in your hand s or on your lap when the vehicle
i s in use.
• Never tran sport items on o r in the are a of the fr ont pa ssenger
seat. Obje ct s c ould move into the area of the front ai rbag s during
braking or other sudden maneu ver s and become dang erous
projectiles that can c au se se rious per sonal injury if the ai rb ags
infl ate.
• Never pla ce o r atta ch acce ssorie s or other objects (such as cup
holder s, telephone brac ket s, large, hea vy or bulky objects ) on th e
doors , ov er or near the are a marked "AIRBAG" on the stee ring
wheel, in strum ent panel , se at ba ckre sts or between th ose ar ea s
and yourself . These objects could cause injur y in a crash , especially
when the airbags infl ate .
9"'
Vehicle care Do-it-yourself service Technical data

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PASSENGER AIR BAG OFF light
Fig. 139 Section from
the center console:
PASSENGER AIR BAG
OFF light
The PASSENGER AIR BAG OFF light is located in the center console
=> fig. 139.
Th e
PASSENGER AIR BAG OFF light will come on and stay on to tell
you when the front Advanced Airbag on the passenger side has been turned
off by the electronic control unit. Each time you turn on the
ign ition, the
PASSENGER AIR BAG OFF light will flash fo r a few
seconds and:
• will stay on if the front passenger seat is not occupied,
• will stay on if there is a small child or child restraint on the front
passenge r seat,
• will go out if the front passenger seat is occupied by an adult as
registe red by the weight-sens ing mat.
The
PASSENGER AIR BAG OFF light must come on and stay on if the
ign ition is on and
• a car bed has been installed on the front seat, or
• a rearward-facing child restraint has been installed on the front
passengerseat,or
• a forward-facing child restraint has been insta lled on the front
passenger seat, or
• the weight registe red on the front passenger seat is equal to or
less than the combined weight of a typical 1 year-o ld restrained in
Controls and equip­
ment Safety first
Vehicle operation
one of the rear-facing or forward-facing infant restraints listed in
Federal Motor Vehicle Safety Standard 208 with w hich the Adva nced
Airbag System in your vehicle was certified .
If the front passenger seat is not occupied, the front airbag wi ll not
dep loy, and the
PASSENGER AIR BAG OFF light will stay on. Never
install a rearward-facing child restraint on the front passenger seat,
the safest pla ce fo r a child in any kind of chi ld restraint is at one of the
seating positions on the rear seat=>
page 147, "Child restraints on
t he front seat -some impo rtan t things to know" and=>
page 167,
"Child Safety" .
If the PASSENGER AIR BAG OFF light comes on when one of the
condit ions listed above is met, be sure to check the light regu larly to
make certain that the
PASSENGER AIR BAG OFF lig ht stays on
continuously whenever the ignition is on.
If the PASSENGER AIR BAG
OFF
light does not appear on and does not stay on all the t ime, stop
as soon as it is safe to do so and
• reactivate the system by turning the ignition
off and then turning
it on again;
• remove and reinstall the ch ild restraint. Make sure that the child
restraint is properly installed and that the safety belt fo r the front
passenger seat has been correctly routed through the child restraint
as described in the child restraint manufacturer's instructions;
• make sure that the convertible locking feature on the safety belt
for the front passenge r seat has been activated and that the safety
belt has been pulled t ight. The belt must not be loose or have loops
of slack so that the senso r be low the safety belt latch on the seat can
do its job=>
page 177.
• make sure that things that may increase the weight o f the chi ld
and child safety seat are not being transported on the front
passenger seat;
• make sure that the safety belt tension sensor is not blocked.
Shake the safety be lt latch on the front passenger seatback and forth;
• If a strap or tether is being used to t ie the child safety seat to the
front p assenger seat, make sure that it is not so tight that it causes •
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& WARNING (co ntinued )
seating position and have the airbag system inspected by your
authorized Audi dealer.
• A tight tether o r other strap on a rearward -facing child
restraint attached to the front pa ssenger seat can put too much
pressure on the weight -sensing mat in the seat and register more
weight than i s actually on the seat . The heavier weight regi stered
can make the system work as though an adult were on the seat
and deploy the Advan ced Airbag when it mu st be suppre ssed
causing serious or even fatal injury to the child .
• If , in exceptional circumstanc es, you must install a forward­
facing child restraint on the front passenger seat, always move
the seat into its rearmost po sition in the seat' s fore and aft adjust­
ment range, as far away from the airbag as possible . The backrest
must be adjusted to an upright position. Make sure that the PASSENGER AIR BAG OFF light comes on and stays on all the time
whenever the ignition is switched on.
& WARNING
• If the PASSENGER AIR BAG OFF light doe s not go out when an
adult is sitting on the front passenger seat after taking the steps
described above, make sure the adult is properly seated and
restrained at one of the rear seating positions.
• Have the airbag system inspected by your authorized Audi
dealer before transporting anyone on the front passenger seat .
[ i ] Tips
If the we ight-sensing mat in the front passenger seat detects an
em pty seat , the front airbag on the passenge r side will be t urne d off,
and the PASSENGER AIR BAG OFF light will stay on .•
Controls and equip­ ment Safety first Vehicle operation
Repair, care and disposal of the airbags
Parts of the airbag system are
insta lled at many different places on
your Audi . Ins tall ing, remov ing, serv icing o r rep airi ng a pa rt in an
area of the vehicle ca n damage a part of a n airbag system and prevent
t ha t sys tem from working prope rly in a coll is io n.
Th ere are some importa nt things you have to know to ma ke sure t hat
the effectiveness of the system will not be impai red and that
dis ca rded compo nents do not cause injury or po llute t he e nvir on­
ment .
& WARNING
Improper care , serv icing and repair procedures can increase the
risk of personal injury and death by preventing an airbag from
deploying when needed or deploying an airbag unexpectedly:
• Never cover, obstruct, or change the steering wheel horn pad or
airbag cover or the instrument panel or modify them in any way .
• Never attach any objects such as cup holders or telephone
mountings to the surfaces covering the airbag units.
• For cleaning the horn pad or instrument panel, use only a soft ,
dry cloth or one moistened with plain water . Solvent s or cleaners
could damage the airbag cover or change the stiffness or strength
of the material so that the airbag cannot deploy and protect prop ­
erly.
• Never repair, adjust, or change any part s of the airbag system .
• All work on the steering wheel, instrument panel , front seats
or electrical sy stem (including the installation of audio equip­
ment, cellular telephones and CB radios, etc. ) must be performed
by a qualified technician who has the training and special equip­ ment necessary .
• For any work on the airbag system, we strongly recommend
that you see your authorized Audi dealer or qualified workshop.
• Never modify the front bumper or parts of the vehicle body . ..,_
Vehicle care Do-it-yourself service Technical data

........ _A_ i_rb _ a_,g,:;._ s_, y'- s_ t_e _m ________________________________________________ _
& WARNING (conti nued)
• Always make sure that the side a irbag can inflate without
interference :
- Never in stall seat covers or replacement uphol stery over the
front seatbacks that have not been specifically approved by
Audi .
- Never use addit ional se at cushions that cover the areas
where the side ai rbags inflate.
- Damage to the or iginal seat covers or to the seam in the area
of the side airbag module must always be repaired immedi­
ately by an author ized Audi dealer.
• The airbag system can be activated only on ce. After an airbag
has inflated, it must be replaced by an authorized Audi dealer or
qualified technician who has the techni cal information, t raining
and special equipment necessary.
• The airbag sy stem can be deploy ed only once. After an airbag
has been dep loyed , it must be replaced with new replacement
parts designed and approved e specially for your Audi model
version. Replacement of complete airbag systems or a irbag
components must be performed by qualified workshops onl y.
Make sure that any airbag service action is entered in your Audi
Warranty
& Maintenance booklet under AIRBAG REPLACEMENT
RECORD .a
Other things that can affect Advanced
Airbag performance
Changing the ve hicle's suspension system can change the way that
t he A dvan ced Airbag Sys tem pe rfo rms in a crash . For examp le, using
tire -rim combinations not approved by Audi, lower ing t he veh icle,
c hang ing the st iffness o f th e suspens ion, including the sp rings,
suspension str uts , shoc k absorbers etc . ca n change the forces tha t
are meas ured by the a irbag sensors and sent to the electronic control
unit. Some suspension changes ca n, for examp le, increase the force levels measured by the senso
rs and make the airbag system deploy in
c ra shes in w hich i t wo uld not deploy if the ch an g es h ad not b een
made . Other ki nds of changes may reduce the force levels meas ured
by the sensors an d prevent the airbag from dep loying when it should .
Th e sensors in t he safety bel t buckle for the drive r and fro nt
passenger seat tell the e lectronic control mo dule if the sa fety belt is
la tch ed o r not. If the safety belt is being u sed, t he fron t airbag w ill
dep loy at a sl ightly h igher rate of vehicle deceleration than if the
s afety belt is not be ing use d. T herefo re, in a pa rticular collis io n, it is
possible that an a irbag w ill not deploy at a seati ng position where the
sa fety belt is being used but w ill inflate at the posit ion where the
safety belt is not be ing used . It is importa nt that nothi ng inte rfere
w ith the safety belt buck les so that t he sensors can send the co rrect
info rmation abou t safety b elt use to t he electron ic co ntro l unit .
& WARNING
Changing the vehicle 's suspension including use of unapproved
tire-rim combinations can change Advanced Airbag performance and increase the risk of serious personal injury in a crash .
• Never install suspension components that do not have the
same performance characteristics as the components originally
installed on your vehicle.
• Never use tire-rim combinations that have not been approved
by Audi.
& WARNING
Item s stored between the safety belt buckle and the center
console can cause the sensors in the buckle to send the wrong
information to the electroni c control module and prevent the
Advanced Airbag System from work ing properly.
• Always make sure that nothing can interfere with the safety
belt buckles and that they are not obstructed . ..,

<£> For the sake of the environment
Undeployed airbag modules and p retensioners might be classified as
Perchlorate Material -special handling may apply, see
www .dtsc.ca.gov/hazardouswas te/perchlorate . When the vehicle or
parts of the restraint system including airbag modules and safety
belts with pretensioners are scrapped, all applicable laws and regula­
tions must be observed. Your authorized Audi dea ler is familiar with
these requirements and we recommend that you have your dealer
perform this service for you .•
Side airbags
Description of side airbags
The airbag system can provide supplemental protection
to properly restrained occupants .
Fig. 140 Side airbag
loc ation in the driver's
seat
The side airbags are located in the sides of the front seat backrests
=> fig. 140 and the rear backrest* facing the doors. They are identi­
fied by the word "AIRBAG".
The side airbag system basically consists of:
• the electronic control module and externa l side impact sensors
• the two side airbags located in the sides of the front backrests
Safety first Vehicle OP-eration
Airbag system
• two rear side airbags (as an ordered option)
• the airbag warning light in the instrument clus ter.
The airbag system is monitored electronically to make certain that it
is funct ion ing properly at all times. Each time you turn on the igni­
tion, the airbag system indicator light w ill come on for a few seconds
(self diagnostics).
Th e side airbag system supplements the safety belts and can help to
reduce the risk of injury to the dr iver's, front and rear* passenger's
upper torso and head on the sid e of the vehicle that is struck in a side
collision . The airbag deploys only in side impacts and only when the
vehicle accelerat ion registered by the contro l unit is high enoug h. If
this rate is below the reference value programmed into the contro l
unit , the side airbags will not be triggered, even though the car may
be badly damaged as a result of the collision . It is not possible to
def ine an a irbag triggering range that will cover every possible angle
of impact, since the circu mstances will vary considerably between
one collision and another. Important factors include, for example,
the nature (hard or soft) of the impacting object, the angle of impact,
vehicle speed, etc.=>
page 163, "Important safety instructions on
the sid e airbag system".
Aside from their normal safety function, safety belts work to help keep the driver or front passenger in position in the event of a side
collision so that the side airbags can prov ide p rotection.
The airbag system is
not a substitute for your safety belt. Rather, it is
part of the overall occupant restraint system in your veh icle. Always
remember that the side airbag system can only help to protect you if
you are wearing yo ur safety belt and wearing i t properly. This is
another reason why you shou ld always wear your safety belts, not just
because the law requires yo u to do so=>
page 135, "Genera l notes" .
It is important to remember that while the supp lemental side airbag
system is designed to reduce the likelihood of serious injuries, other
injur ies, for example, swelling, bruising, and minor abrasions can
also be assoc iated with deployed side airbags. Remember too, side
airbags will dep loy only once and only in certain kinds of accidents -
your safety belts are always there to offer protection.
~
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