ignition AUDI S3 2009 Repair Manual

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
as defin ed i n th e el ectron ic contro l u n it=> page 159, "PASSE NGER
AI R BA G OFF lig ht".
A lways rem em ber, a c hild safet y se at or infant carr ier installe d on
the front seat may be struck and k nocked o ut of po sition by t he
rap id ly in fla ting passe nger's air bag in a fron tal colli sion . The airb ag
cou ld great ly re duce the effectivene ss of the ch ild restrain t and
e ve n seri ous ly injure the chi ld dur ing in flatio n.
For th is reason, and beca use the bac k seat is the safest plac e for
chi ldren -wh en prop erl y rest rained acc ording to th eir age and size
- we strong ly recommend that ch ildren a lways sit in the bac k se at
=> p age 169, "Ch ild Safe ty ".
& WARNING
A child in a rearward -facing child safety seat installed on the front
passenger seat will be ser iously 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 ba ckrest , center arm rest , door or roof .
• Always install rear -facing child safety seats on the rear 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 ,
immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
authorized Audi dealer.
• Forward-facing child safety seats installed on the front
passenger's seat may interfere with the deployment of the airbag
and cause serious personal injury to the child .
& WARNING
If, in exceptional circumstances, you must install a forward-facing
child restraint on the front passenger's seat:
& WARNING (continued)
• Always make sure the forward-facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag .
• Never put the forward-facing child restraint up against or very
near the instrument panel.
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range, as far away from the
airbag as possible before installing the forward-facing child
restraint. 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
To reduce the risk of serious injury , make sure that the PASSENGER
AIR BAG OFF light will be displayed whenever a child restraint is
installed on the front passenger seat and the ignition is switched
on.
• If the PASSENGER AIR BAG OFF light does not stay on , perform
the checks described
=> page 158 , "Monitoring the Advanced
Airbag System" .
• Take the child restraint off the front passenger seat and install
it properly at one of the rear seat positions if the PASSENGER AIR
BAG OFF light does not stay on.
• Have the airbag system inspected by your authorized Audi
dealer immediately.
• Always carefully follow instructions from child restraint manu ­
facturers when installing child restraints .
& WARNING
If, in exceptional circumstances, you must install a forward or
rearward-facing child restraint on the front passenger's seat :

___ A_ ir_ b_ a-g _ s_y _ s_ t_ e_ m _________________________________________________ _
& WARNING (continued)
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.
& WARNING
If, in exceptional circumstances, you must install a forward-facing
child restraint on the front passenger's seat:
• Always make sure the forward -facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag.
• Never put the forward-facing child restraint up against or very
near the instrument panel .
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range, as far away from the
airbag as possible, before installing the forward-facing child
restraint . 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. •
Advanced Airbag System components
The front passenger seat in your vehicle has a lot of very important
parts of the Advanced Airbag System in it. These parts include the
weight-sensing mat, sensors, wiring, brackets, and more. The func­
tion of the system in the front passenger seat is checked by the elec ­
tronic control unit when the ignition is on. The control unit monitors
the Advanced Airbag System and turns the airbag indicator light on
when a malfunction in the system components is detected. The
function of the airbag indicator light is described in greater detail
below. Because the front passenger seat contains important parts
of the Advanced Airbag System, you must take care to prevent it from being damaged.
Damage to the seat may prevent the
Advanced Airbag for the front passenger seat from doing its job in
a crash .
The front Advanced Airbag System consists of the
following: • Crash sensors in the front of the vehicle that measure vehicle
acceleration/deceleration to provide information to the Advanced
Airbag System about the severity of the crash.
• An electronic control unit, with integrated crash sensors for front
and side impacts. The control unit "decides" whether to fire the
front airbags based on the informa tion received from the crash
sensors. The control unit also "decides" whether the safety belt
pretensioners should be activated.
• An Advanced Airbag with gas generator for the driver inside the
steering wheel hub .
• An Advanced Airbag with gas generator inside the instrument
panel for the front passenger.
• A weight-sensing mat under the upholstery padding of the front
passenger seat cushion that measures the total weight on the seat.
The information registered is sent continuously to the electronic
control unit to regulate deployment of the front Advanced Airbag on
the passenger side.
• An airbag monitoring system and indicator light in the instru ­
ment cluster => page 158.
• Th e PASSENGER AIR BAG OFF light comes on and stays on in the
center of the instrument panel=> page 159, fig. 146 and tells you
when the front Advanced Airbag on the passenger side has been
turned off.
• A sensor below the safety belt latch for the front seat passenger
to measure the tension on the safety belt . The tension on the safety
belt and the weight registered by the weight -sensing mat help the
control unit "decide" whether the front airbag for the front
passenger seat should be turned off or not=> page 149, "Child
restraints on the front seat -some important things to know". .,_

Airbag system ""' -------------------------------------------- -=---='------
or the lower parts of the body. Front airbags suppl em ent the three ­
poi nt s afet y be lts o nly in s ome fro ntal c oll isi ons i n whi ch the v ehicl e
deceleration is hi gh enough to d eploy the airbags .
Front airbags will not deploy:
• if the ignition is switched off when a crash occurs,
• i n sid e collisi ons,
• in r ear- e nd collisions ,
• in ro llovers,
• when the cras h de celer ation me asured b y th e a ir bag sy stem i s
l ess than the minimum threshold nee ded for airbag dep loyment as
r egi stere d by t he ele ctronic control un it.
The front passenger airbag also will not deploy :
• when the front pa ssen ger s eat i s not o cc up ied,
• wh en the weig ht on th e front pass enger seat as se nsed by t he
Advan ced A irb ag System indi cate s that the fr ont air b ag on the
p as se n ge r sid e h as to be turned off b y the e lectronic cont rol unit
(the PASSENGER AIR BAG OFF l ig ht co me s on and sta y s on ).
& WARNING
Sitting in the wrong position can increase the risk of serious injury
in crashes .
• To reduce the risk of injury when the airbags inflate , the driver
and passengers must always sit in an upright position , must not
lean against or place any part of their body too close to the area
where the airbags are located .
• Occupants who are unbelted , out of position or too close to the
airbag can be seriously injured by an airbag as it unfolds with
great force in the blink of an eye~ page
149 .
Controls and equip­
ment Safety first
Vehicle operation
& 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 .
• 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 on the rear 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, immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
authorized Audi dealer .
& WARNING
Objects between you and the airbag will in crease the risk of injury
in a crash by interfering with the way the airbag unfolds or by
being pushed into you as the airbag inflates .
• Never hold things in your hands or on your lap when the vehicle
is in use.
• Never transport items on or in the area of the front passenger
seat. Objects could move into the area of the front airbags during
braking or other sudden maneuvers and become dangerous
projectiles that can cause serious personal injury if the airbags
inflate .
• Never place or attach accessories or other objects (such as cup
holders, telephone brackets , large, heavy or bulky objects) on the
doors , over or near the area marked "AIRBAG " on the steering
wheel , instrument panel , seat backrests or between those areas
and yourself . These objects could cause injury in a crash , espe-
cially when the airbags inflate . ...
Vehicle care Do-it-yourself service Technical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
& WARN ING (continued )
• Never recline the front passenger' s seat to transport obje cts.
Item s can als o move into the area of the side airbag or the front
airbag during br aki ng or in a sudden maneuver . Objects near the
airbags can become projectiles and cause injury , particularly when
the seat is re clined .
& WARNING
The fine dust created when airbags deploy can cause breathing
problems for people with a histo ry of asthma or other breathing
c onditions.
• To reduce the ri sk of breathing p roblems , tho se with asthma or
other respiratory conditions should get fresh air right away by
getting out of the veh icle or opening windows or door s.
• If you are in a collision in which airbags deploy , wash your
hands and face w ith mild soap and water before eat ing.
• Be careful not to get the dust into your eyes, or into any cuts or
s crat ches .
• If the residue should get into your eyes , flush them with
water .•
Monitoring the Advanced Airbag
System
Airbag monitoring indicator light t:Ji
Two sepa ra te indi cator s mon itor t he function of the
Ad vanc ed A irba g Sy stem: th e ai rbag moni to rin g in dicator
ligh t and the
PASSENGER AIR BAG OFF light .
The Advanced Airbag System (including the electronic control unit,
sensor c ircuits and system w irin g) is mon itored continuously to
make su re that it is functioning proper ly whenever the ignition is on. E
ach time you turn on the ignition, the airbag monitoring indicator
li ght
I wi ll c om e on fo r a few sec onds (sel f diag nos tics).
The system must be inspected when the indicator light ~:
• does not come on when the ignition is switched on,
• does not go out a few seconds a fter you have switched on the
ignition, or
• comes on w hile driving.
I f an airbag system malfunction is detected, the indicator light will
fir st star t fl ashin g to catc h the drive r's at tention an d then stay o n
continuously to serve as a constant reminder to have the system
ins pec te d imm edi ately.
I f a malfunction occurs t hat turns the front airbag on the passenger
side off, the PASSENGER AIR BAG OFF light will come on and stay on
whenever the ignition is on.
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protection in a front al crash.
• If the a irbag indicator light comes on , it means that there may
be something wrong with the Advanced Airbag System. It is
possible that the airbag will inflate when it is not supposed to , or
will not inflate when it should.
• Have the airbag system inspected immediately by your autho ­
rized Audi dealer. •

__________________________________________________ A_ i_ r _b _a...; g::- s_ y=--- s_t _e _m __ lffl!III
PASSENGER AIR BAG OFF light
I, Q
--
&I Ii u ,, , u
I I J' J
Fig. 1 46 Sectio n from
t h e ce nte r co nso le :
PA SS ENGER AIR B AG
OFF light
The PA SSENGER AIR BAG OFF light is located in the center console
=>fig.146 .
The
PA SSENGER AIR BAG OFF light wil l come on and stay on to te ll
you when the front Advanced Airbag on the passenger side has been turned off by the electron ic control unit. Each time you turn on
the ign it ion, the
PA SS ENGER AIR BA G OFF light will flash for 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 chi ld restraint on the front
passenge r seat,
• will go out if the front passenger seat is occupied by an adult as
registered by the we ight-sensing mat .
T he
PA SS ENGER AIR BAG OFF light mu st co me on and sta y on if the
ign ition is on and
• a car bed has been insta lled on the front seat, or
• a rearward -facing chi ld restraint has been installed on the front
passenger seat, or
• a forwa rd -facing child restra int has been installed on the front
passenger seat, or
• t he we ight registered on the front passenger seat is equa l to or
less than the combined weight of a typica l 1 year -old restrained in
Controls and equip­
ment Safety first
Vehicle operation
one of the rear-facing or forward -facing infant restraints listed in
Federa l Motor Veh icle Safe ty S tandard 208 with which the Advanced
Airbag System in your vehicle was certified.
I f the front passenger seat is not occupied, the front airbag will not
deploy, and the
PA SS ENGER AIR BAG OFF light will stay on . Never
insta ll a rearward -facing child restraint on the front passenger seat,
the sa fest place for a child in any kind of child restraint is at one of
the seating posi tions on the r ear seat =>
page 149, "Child restraints
on the front seat -so me important things to know" and=>
page 169,
"Chi ld Safety ".
If the PASSENGER AIR BAG OFF light com es on when one of the
conditions listed above is met, be sure to check the light regu lar ly
to make certa in that the
PA SS ENGER AIR BAG OFF light stays on
continuously whenever the ignition is on . If the
PA SSENGER AIR
BAG OFF
light does not appear on and does not stay on all the tim e,
stop as soon as it is safe to do so and
• reactivate the system by turning the ignition off and then turning
it on aga in;
• remove and reinstall the child restraint. Make sure that the child
restrain t is proper ly installed and t hat the safety be lt for the front
passenger seat has been correctly routed through the child restraint
as described in the chi ld restraint manufacturer's instructions;
• make sure that the convertible locking feature on the safety belt
for the front passenger sea t has been activated a nd that the safety
belt has been pulled tight . The belt must not be loose or have loops
of slack so that the sensor be low the safety belt latch on the sea t can
do its job =>
page 179.
• make sure that things that may inc rease the we ight of the child
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 belt latch on the front passenger seat back and
forth;
• I f a strap or te ther is being used to tie the child sa fety seat to the
front passenger seat , make sure that it is not so tight that it causes .,
Vehicle care Do-it-yourself service Technical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
the weight-sensing mat to measure more weight than is actual ly on
th e seat .
If the PASSENGER AIR BAG OFF light still does not come on and does
not stay on continuous ly (when the ignition is switched on),
• t ake the c hild res traint off t he front passe ng er seat a nd ins tall it
properly at one of the rear seat pos it ions. Have the a irbag system
ins pect ed by y our aut horize d Au di d eale r im me dia te ly.
• move the chi ld to a rear seat position and make sure that the
c h ild is pro pe rly restrai ned in a c hild restraint that is app ropriat e for
its size and age.
The
PASSENGER AIR BAG OFF l igh t sho uld NOT come on when the
ignition is on and an adult is sitt ing in a proper seating position on
the front passenge r seat . If the
PASSENGER AIR BAG OFF light
comes on a nd s tays o n or fl ashes for about 5 seco nds whi le d riving,
under these ci rcumstances, make sure that:
• the adu lt on the fron t pass enger sea t is pro perly seate d on the
cent er of the seat cushion with his or her back up against the back ­
rest an d the back res t is n ot recline d=> page 128, "Proper seati ng
position for the driver",
• t he ad ult is not ta king w eig ht o ff the sea t by hol ding o n to the
passenger assist hand le above the front passenger door or
su ppo rting their w eigh t on the arm res t,
• the safety be lt is being proper ly worn and that there is not a lot
o f sla c k in the sa fe ty b elt webbi ng,
• accessory seat covers or cushions or other things that may cause
an incorrect read ing o r impression on t he w eight -s e nsin g mat
under the upho lstery of the seat have been removed from the front
pass enger seat,
• a safety be lt extender has not been left in the safety be lt latc h for
th e fro nt passenger sea t.
In addition to the
PASSENGER AIR BAG OFF l ight in the center of the
instrument pane l, the mes sage
PASSENGER AIR BAG OFF o r
PASSENGER AIR BAG ON will br iefly appear in the instrument cluster display. This is to inform the driver of the curren
t front passenger
air bag status .•
Important safety instructions on monitoring
the Advanced Airbag System
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protect ion in a frontal crash .
• If the airbag indicator l ight comes on , it means that there may
be something wrong with the Advanced Airbag System . It is
possible that the airbag will inflate when it is not supposed to, or
will not inflate when it should .
• Have the airbag system inspected immediately by your autho­
rized Audi dealer.
& WARNING
If the front airbag inflates, a child without a child restraint , or in a
rearward-facing child safety seat , or in a forward-facing child
restraint that has not been properly installed will be seriously
injured and can be killed .
• Even though your vehicle is equipped with an Advanced Airbag
System , make certain that all children , espec ially 12 years and
younger, always ride on the back seat properly restrained for their
age and si ze .
• Always install forward or rear -facing child safety seats on the
rear seat -even with an Advanced Airbag System .
• If you must install a rearward -facing child safety seat on the
front passenger seat be cause of exceptional cir cumstances and
the PASSENGER AIR BAG O FF light does not appear and stay on ,
immediately install the rear -facing child safety seat in a rear
~

__________________________________________________ A_ i_ r _b _a...; g::- s_ y=--- s_t _e _m __ lflll
& W ARNING (continued )
seating position and have the airbag system inspected by your
authorized Audi dealer.
• A tight tether or other str ap on a rearward-fac ing child restr aint
attached to the front pas senger seat can put too much pressure
on the weight-sensing mat in the seat and reg ister more weight
than i s actually on the seat. 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
s erious or even fatal injury to the child .
• If, in exceptional circumstances , you mu st in stall a forward ­
fac ing child restra int on the front passenger seat , always move the
seat into its rearmost position in the seat's fore and aft ad just ­
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 stay s on all the time
whenever the ignition is switched on .
& WARNING
• If the PASSENGER AIR BAG OFF light does 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 weight -sensing mat in the front passenger seat detects an
e mp ty seat, the fro nt air b ag on the pa ssenge r sid e will be t urned
off, and the PASSENGER AIR BAG OFF l ight will stay on .
a
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 Au di. In stal lin g, re moving, ser vic in g or re pair in g a part in an
area of the vehicle can damage a part of an a irbag system and
pre ven t that system from wo rki ng p rope rly in a co llision .
There are some important things you have to know to make sure
that the effectiveness of the system will not be impai red an d that
d iscarded co mponents do not cause inju ry or po llute t he e nv iron ­
ment .
& WARNING
Improper care , servicing 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 obje cts su ch 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 moi stened with plain water . Solvents or cleaners
c ould 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 parts of the airbag system.
• All work on the steering wheel , instrument panel , front seats or
electrical system (including the installation of audio equipment ,
c ellular telephones and CB radios , etc .I must be performed by a
qualified technician who has the training and special equipment
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_ ir_b _a_ g;:::;_ s--:.. y_s _t _e _m _________________________________________________ _
enough. If this rate is below the reference value programmed into
t he control 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 define an airbag triggering range that wi ll cover every
possible angle of impact, since the circumstances will vary consid­
erably 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 165, "Impor ­
tant safety instructions on the side 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 provide protection .
The airbag system is
not a substitute for your safety belt . Rather, it
is part of the overa ll occupant restraint system in your vehicle .
Always remember that the side airbag system can on ly help to
protect you if you are wearing your safety be lt and wearing it prop­
erly . This is another reason why you should always wear your safety
belts, not just because the law requires you to do so=>
page 137,
"General notes" .
It is important to remember that while the supplemental side airbag
system is designed to reduce the likelihood of serious injuries, other
injuries, for example, swel ling, bruising, and minor abrasions can
a lso be associated with deployed s ide airbags. Remember too, side
airbags wil l deploy only once and only in certain kinds of accidents
- your safety belts are always there to offer protection.
Vehicle damage, repair costs or even the lack of vehicle damage are not necessari ly an indication of over -sensitive or failed airbag acti ­
vation. In some collisions , both front and side airbags may inflate.
Remember too, that airbags will deploy only once and only in
certain kinds of collis ions - your safety belts are always there to
offer protection in those accidents in which airbags are not
supposed to deploy or when they have already dep loyed.
The sid e a irba g sy stem w ill not deploy :
• when the ignition is turned off •
in side collisions when the acceleration measured by the sensor
is too low
• in front -end collisions
• in rear-end co llisions
• in ro llovers .
In some types of accidents the front airbags, side curtain airbags
and side airbags may be triggered together .
& WARNING
• Safety b elt s and the airbag sy stem will only prov id e prot ection
whe n occ upant s are in the prop er se ating posit io n=>
page 1 65 .
• If the airb ag indic ator light come s on w hen the v ehicl e is bei ng
u sed , h av e the syste m inspe cte d immedi ate ly by y our authoriz ed
Audi de aler . Th e ai rbag m ay not w ork properly when the vehicle
a ccel erat ion in a side collision is high e nough to ac tivate th e
a ir bag .•
Hovv supplemental side airbags vvork
Side airbags deploy instantly and can help reduce the risk of upper torso injuries for occupants who are properly
restrained.
(
.• . , ......... ~ ~---
F ig . 14 8 Inf late d sid e
a ir bags o n left side of
v ehi cle, rea r sid e
a ir bag opti on al eq uip-
m ent .,

angle of impact, s inc e the ci rcumstanc es w ill vary considerably
bet ween one collisi on and another. Important factors include, for
example, the nature (hard or soft) of the impacting object, the ang le
of impact, vehicle speed, etc.=>
page 167.
Aside from the ir norma l safety func tion, sa fety be lts work to help
keep the driver or front passenger in position in the event of a colli ­
s ion so that the s ide curtain a irbags can provide protection.
T he airbag system is not a substitute for your safety belt. Rather, it
is part of the overall occupant restraint system in your veh icle .
A lways remember that the airbag system can only help to protect
you if you are wea ring your safety belt and wearing it proper ly . This
is another reason why you should a lways wear your safety belts, not
just because the law requires you to do so=>
page 137, "General
notes".
I t is important to remember that while the side curtain airbag
system is des igned to help reduce the likelihood of serious injuries,
other injuries, for examp le, swelling, bruising, and minor abrasions
can a lso be associated with these airbags upon de ployment .
Remember too, these airbags will dep loy only once and only in
certa in kinds of accidents -your safety be lts a re a lways there to
offer protection.
The side curtain airbag system basically consists of :
• The electronic control module and externa l side impact sensors
• The side curtain airbags above the fron t and rear s ide windows
• T he airbag indicator light in the instrument panel
The airbag system is moni tore d electronically to make c ertain it is
functioning properly at a ll times . Each time you turn on the ignition,
the ai rbag system indicator light w ill come on for a few seco nds
(self diagnostics).
The side curtain airbag is not activated :
• if the ignition is turned off,
• in side coll isions when the acce leration measured by the senso r
is too low,
Safety first
Airb ag sy ste m
• in front -end collisions,
• in rear-end co llisions,
• in ro llove rs.
& WARNING
• Safety belt s and the airbag sy stem will only prov ide protection
when oc cupant s are in the proper seating position
=> page 74 ,
"General recommendations".
• If the airbag indicator light comes on when the veh icle is being
u sed , have the system in spected immediately by your authori zed
Audi deale r. The side curt ain airbag may not work prope rly even
when the vehicle acceleration in a side coll ision is high enough to
act ivate the air b ag. •
How side curtain airbags work
S ide c urt ain air bags ca n work together with side air bags
to hel p redu ce the risk of he ad a nd up p er torso injuries for
occupants who are prope rly re stra ined.
Fig . 15 0 Ill ustra tio n of
pri nciple : In fl ated side
c u rt a in airb ag s on th e
left side
The side curtain airbags inflate between the occupant and the
wind ows on the side of the ve hicle that is struck in a side collis io n
=> fig . 150. jll-
Vehicle care I I irechnical data

-Child Safety ------=---------------------------------
& WARNING (continued )
• Always install rear-facing child safety seats on the rear seat .
• If you must install a rearw ard fa cing child safety seat on the
front passenger seat in exceptional circumstances and 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 posit ion and have the airbag system inspected immedi ­
ately by your authorized Audi dealer .
& WARNING
If, in exceptional circumstances, you must install a forward -facing
child restraint on the front passenger's seat :
• Always make sure the forward -facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag.
• Always follow the manufacturer's instructions provided with
the child safety seat or carrier.
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range , as far away from the
a irbag as possible before installing the child restraint . The back­
rest must be adjusted to an upright position.
• Always make sure that the PASSENGER AIR BAG OFF light
comes on and stays on all the time whenever the ignition is
switched on . •
Advanced front airbag system and children
Y our vehicle is equipped with an " Advanced Airbag Syste m" in
co mplia n ce wi th Unit ed States F edera l Moto r Veh icle Saf ety S tan­
dard ( FMVSS) 208 as appl icable at the time your vehicle was manu ­
f actu re d . T
he Advanced Airbag system in your vehicle has been certified to
m eet the " lo w -ris k" req uiremen ts for 3 and 6 year -ol d c hildren on
the passenger side a nd smal l adults on the driver side . The low risk
de ploymen t criteria a re i ntended to reduce the risk of i nju ry t hroug h
interaction with the airbag that can occur, for example, by bei ng too
close to the s tee rin g w heel and instrume nt panel whe n the ai rbag
i n fl ates. In add it ion, t he sys tem has been cer tified to co mply wi th
the "suppre ssion" req uirement s of the Safety Standa rd, to turn off
the front a irbag f or infants up to 12 month s who ar e restrai ned on
the front passenger seat in child restraints that are listed in the
S tan dard.
E ven though your vehicle is equipped with an Advanced Airbag
sy stem , a ll ch ildr en, especia lly those 12 yea rs and yo unge r, should
a lways ride i n the back seat prop erly re stra ined for t heir a ge and
s ize . The ai rbag on the pas se nger side make s th e fr on t sea t a poten­
t ia lly dangero us p lace for a c hild to r ide. The front seat is no t the
safest p lace for a child in a forward -facing child safety seat. It can be
a ve ry da nger ous place for a n inf ant or a la rg er c hild i n a rea rward ­
facing seat. •
Advanced Airbags and the weight-sensing
mat in the front seat
Th e Ad vanced Ai rbag Sys te m in your vehic le de tec ts the prese nce
o f an inf ant or c hild in a chi ld rest raint on the front pass eng er s eat
us ing the weight -sensing mat in the seat cushion and the senso r
b elow t he safety be lt latch on t he front pass enger s eat that
measures the tension on the safety belt.
T he weig ht-se nsin g m at m easu res total weig ht of th e chi ld an d th e
c h ild safety s eat and a ch ild bl anket on the front passen ger seat . T he
w eig ht on th e front p assenge r seat is re la te d to th e des ig n of t he
c h ild re straint and its "footpr int", t he size and shap e of the bottom
of t he child restraint a s it sits on the seat . Th e w eight of a child
r e stra int and its "footprint" vary for diff ere nt k inds of c hild ..,.