2010 AUDI S8 Owners Manual

If the electronic control unit reg isters a crash of medium severity, the
first stage of the airbag deploys follo wed by the second stage at a
much later t ime in the crash sequence -regardless of whether the
safety belt is being used or not. In higher severity crashes as regis­
tered by the electronic control unit, both the first and second stages
deploy almost at the same time .
On the passenger side, regardless of safety belt use, the airbag will
be turned off if the weight on the passenger seat is less than the
amount programmed in the electronic control unit. The front airbag
on the passenger side w ill also be turned off if one of the child seats
that has been certified under Federal Motor Vehicle Safety Standard
208 has been recognized on the seat . The
PASSENGER AIR BAG OFF
light comes on and stays on to tell you when the front Advanced
Airbag on the passenger side has been turned off~
page 208, "Child
restraints on the front seat -some important things to know".
& 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 injuries 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 206. •
Safety first Vehicle OP-eration
Airbag system
More important things to know about front
airbags
Fig. 214 Inflated
front airbags
Safety belts are important to help keep front seat occupants in the
proper seated position so that airbags can unfold properly and
prov ide supplemental protection in a frontal collision.
Th e front airbags are designed to provide additiona l protection for
the chest and face of the driver and the front seat passenger when:
• safety belts are worn properly ,
• the seats have been positioned so that the occupant is properly
seated as far as possible from the airbag ,
• and the head restraints have been properly adjusted .
Because airbags inflate in the blink of an eye with great force, things
you have on your lap o r have placed on the seat could become
dangerous projectiles, and be pushed into you if the airbag inflates .
When an airbag deploys, fine dust is released. This is normal and is
not caused by a fire in the vehicle. This dust is made up mostly of a
powder used to lubricate the airbags as they deploy . It could irritate
skin .
It is important to remember that while the supplemental airbag
system is desig ned to reduce the likelihood of serious injur ies, other
injuries, for example swell ing, bruising and m inor abrasions, can also
happen when airbags inflate. Airbags do not protect the arms or the •
Vehicle care Do-it-yourselt service iTechnical data

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lower parts of the body . Front airbags supplement the th ree-point
sa fety belts o nly in some fron tal co llis io ns in whi ch the vehicl e decel­
eratio n is h igh enough to d eploy the a irbags .
Front airbags will not deploy:
• if the ignition is sw itched off when a cras h occ urs,
• in s ide collisions,
• in rea r-end collisions,
• in rollovers,
• when the cras h deceler ati on me asured by t he airba g sy st em is le ss
than t he m in imum thres hold needed for airbag dep loyment as regis­
t ere d by the e lectro nic cont rol uni t.
The front passenger airbag also will not deploy:
• when the front pas se ng er s eat is not occupi ed,
• when the we ight on the front passenge r seat as sense d by the
Adv anced Air bag Sy stem indicat es th at t he fron t a irbag on the
passenger s ide has to be turned off by the e lec tron ic cont rol u nit (the
PASSENGER AIR BAG OFF ligh t com es o n an d st ay 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 208 .
& WARNING
A child in a rearward-facing child 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 seat or infant carrier with
great force and will smash the child seat and child against the
backrest, center armrest, door or roof.
• Always install rear-facing child seats on the rear seat .
• If you must install a rearward facing child 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 ch ild seat in a rear seating
position and have the airbag system inspected by your Audi
dealer .
& WARNING
Objects between you and the airb ag will increase 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 se rious 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 , especially
when the airbags inflate. ..,.

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& WARNING (co nti nued )
• Never recline the front p assenger 's seat to transport objects.
It em s can also move into the area of the side airbag or the front
airbag during braking or in a sudden maneuver. Objects near the
airbag s can become projectiles and cause injury, particularly when
the seat is reclined.
& WARNING
The fine dust created when airbag s deploy can cause breathing
problem s for people with a hi story of asthma or other breathing
conditions .
• To reduce the risk of br eathing problems, those with asthma or
other re spiratory conditions should get fre sh air right away b y
getting out of the vehicle
or opening windows or doors .
• If you are
in a collision in which airbags deploy , wa sh your
hands and face with mild soap and water before eating.
• Be careful not to get the dust into your eyes, or into any cuts or
scratches.
• If the residue should get into your eyes, flush them with
water .•
Monitoring the Advanced Airbag
System
Airbag monitoring indicator light~~
Two sep arate indic ato rs m onito r the fu nctio n of the
Adva nce d A irbag Syst em: the ai rbag monito ring in di cator
light and the
PASSENGER AIR BAG OFF light.
The Advanced A irbag System ( including the elect ronic contro l unit,
senso r cir cuits and syst em wi ring) is monitored co ntinu ously to make
sure that it is f unction ing p roperly w henever the ignition is on. Eac h
Controls and equip­
ment Safety first Vehicle operation
time you t
urn on the ign ition , the airbag mo nitoring ind icator lig ht ti
w ill come on fo r a few seconds (se lf di agnos tics).
The system must be inspected when the indicator light ~:
• does not come on when t he ignit ion is switched on,
• does not go out a few seconds after you hav e switched on the igni­
tion, or
• comes o n wh ile d riving.
If an a irbag system malfunction is detected, the ind icator light will
fir st s tar t flashing to ca tch t he dr ive r's a tten tion and then st ay on
cont inuous ly to serve as a constant rem inder to have the system
inspec ted immed ia tely .
If a ma lfunct io n occ urs t hat t urns the front a irbag on the passenger
side o ff, the
PASSENGER AIR BAG OFF li ght will come on and stay on
w henever the igni tion is on .
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protection in a frontal crash.
• If the airbag ind icator 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 Audi
dealer. •
Vehicle care Do-it-yourself service Technical data

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PASSENGER AIR BAG OFF light
( ~ I :."!l.t.~A I ~
1~ J,
i
)
Fig . 215 Section from
the in strume nt panel :
PASSENGER AIR BAG
OFF light
The PASSENGER AIR BAG OFF ligh t is located in the center of t he
ins trumen t panel => fig. 2 15 .
T he
PASSENGER AIR BAG OFF ligh t will com e on and stay on to te ll
you when the front Advanced Airbag on the passenger side has been
t u rn ed off by the ele ct ronic contro l uni t. Each t ime you t urn on t he
ignition, the
PASSENGER AIR BAG OFF light will flash fo r a few
se conds and:
• will stay on if the front passenger seat is not occupied,
• will s tay on if t here is a small ch ild or child res trai nt on the fron t
passenger seat,
• will go out if t he front passenger seat is oc cupied by a n ad ult as
registered by the weight-sensing mat .
Th e
PASSENGER AIR BAG OFF light mu st come on and stay on if the
ignition is o n and
• a ca r bed has been installed o n the front seat, or
• a rearward -facing child restraint has been insta lled on t he front
passenger seat, o r
• a forward-fac ing ch ild restraint has bee n installed on the front
passenge r seat, o r
• the weight registered on t he front passe nger seat is equal to o r
less th a n the co mb ined we ight of a typic al 1 year-o ld rest rained in one of the rear-faci
ng or forward-facing infant restraints listed in
F e d era l Mo tor Ve hicle Safe ty St anda rd 2 08 w ith which th e Adv anced
Airbag System in your vehicle was cert ified.
If the front passen ger seat is not occupied, the front airbag will not
dep loy, and t he
PASSENGER AIR BAG OFF ligh t will stay on. Never
install a rearward -facing c hild rest raint on the f ront passenger seat,
t he s afest pl ace fo r a child in any k ind of child re stra in t is a t one o f th e
seating pos it ions on the rear seat::::;,
page 208, "Child restraints on
t he fro nt sea t - so me im port an t things to kno w" and =>
page 231,
"Ch ild Safety" .
If the PASSENGER AIR BAG OFF light comes on when one of the
c onditions lis ted above is met, be sure to check the lig ht reg ularly to
ma ke certain that the
PASSENGER AIR BAG OFF lig ht stays on
c ont inuo usly 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 so on a s it is safe to do so and
• reactivate the system by turn ing the ig nition off and then tur ning
it on again ;
• remove and reinstall the child restraint. Make sure that the c hild
restrain t is properly inst alled and that the sa fety belt for the fron t
passenger seat has been correct ly routed th rough the chi ld restra int
as desc ribe d in the ch ild restrain t manufacture r's ins tructions;
• make su re that the convertib le lock ing feature on t he safety belt
f or the front passenger sea t has been act ivate d an d that the safe ty
belt has bee n pulled tight. The belt m ust not be loose or have loops
of slac k so that t he senso r be low the safety belt latc h on the seat can
do its job::::;,
page 241.
• make s ure tha t things tha t may in crease the weight o f the chi ld
and c hild seat a re not be ing transported o n the front passe nger seat;
• mak e s ure th at th e s afety bel t tension se nso r is not blocked.
Shake the safety belt latch o n the front passenger seat back and
f orth;
• If a strap or tether is being used to t ie the child seat to the front
pass en ge r sea t, mak e sure that it is not s o tight t hat it cau ses t he ...

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weight-sens ing mat to measure mo re weig ht than is actually on t he
se at.
If the PASSENGER AIR BAG OFF light still does not come on and
does not stay on cont in uou sly (when the ignition is sw itched on),
• t ake the child re st raint o ff the fr ont pa ssenge r seat and in stall i t
prope rly at one of t he rear seat pos itions. Have t he a irbag system
i n sp ec ted by you r A udi d eal er i mmedi ately.
• move the child to a rear seat posit io n and make sure that the child
is prop erly restra ined in a chi ld restr aint t hat is a ppropr iate f or its
size and age .
Th e
PASSENGER AIR BAG OFF light sho uld NOT come on when t he
ign ition is on and an adult is sitt ing in a proper seating pos it io n on the
front passenge r seat. If the
PASSENGER AIR BAG OFF light comes on
and stays on or flashes for abou t 5 seco nds w hile driving, under these
circumstances, make sure that:
• t he adult on t he fr on t p asse nger sea t is prope rly se ate d on the
center of the seat cushion with his or her back up against the backrest
and the bac krest is not recline d=> page 188, "Proper occ upant
seating posit ions",
• t he adult is n ot tak ing weig ht off t he se at by h olding on to t he
passenger assist handle above the fro nt passenger doo r or
s u pp orting their weight on the armrest,
• the safety belt is be ing properly worn and t hat there is not a lot of
s la ck in t he safe ty be lt webb ing ,
• accessory seat cove rs or cushions o r othe r th ings that may cause
an in cor rect re adin g or impress io n o n the weight -sen sing m at under
the upholstery of the seat have been removed from the front
pas senge r sea t,
• a safety be lt extender has not been left in the safety belt latch fo r
t he fr ont p asse n ge r se at.
In addition to the
PASSENGER AIR BAG OFF light in t he center of the
instrument pa nel, the message
PASSENGER AIR BAG OFF or
PASSENGER AIR BAG ON w ill b riefly appear in th e inst rume nt clus ter
Controls and equip­
ment Safety first Vehicle operation
display. This
is to inform the dr iver of the current front passenger
a ir bag s tatus. •
Important safety instructions on
monitoring the Advanced Airbag System
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protection in a frontal crash.
• If the airbag 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 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 i s equipped with an Advanced Airbag
System, make certain that all children, especially 12 years and
younger , always ride on the back seat properly restrained for their
age and size .
• Always install forward or rear-facing child seats on the rear
seat -even with an Advanced Airbag System .
• If you must install a rearward-facing child seat on the front
passenger seat because of exceptional circumstances and the
PASSENGER AIR BAG OFF light does not appear and stay on,
immediately install the rear-facing child seat in a rear seating
Vehicle care Do-it-yourself service Technical data

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& WARNING (conti nued)
position and have the airbag system inspected by your Audi
deal er.
• A tight tether or othe r strap on a rearward-facing child
restraint attached to the front passenger 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 heav ier 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 .
• If, in ex ceptional circumstances, you must install a forward·
facing child restraint on the front passenger seat, always move
the seat into i ts rearmo st 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 do es not go out when an
adult is sitting on the front passenger seat after taking the steps
de scribed above, make sure the adult i s properly seated and
restrained at one of the rear seating positions.
• Have the airbag system inspected by your Audi dealer before
transporting anyone on the front passenger seat .
[ i ] Tips
If the we ight-sens ing mat in the front passenger seat detects an
empty seat, the front a irbag on the passenger side w ill be t urne d off,
and the PASSENGER
AIR BAG OFF light w ill stay on .•
Repair, care and disposal of the airbags
Parts o f the a irbag system are installed at many different p laces on
your Audi. Install ing, remov ing, servic ing or repa iring a part in an
area of the ve hicle can damage a part of an airbag system and preve nt
t ha t system from working pro perl y in a coll is ion.
T here are some important thi ngs you have to know to make sure that
the effectiveness of the system will not be impa ired and that
discarded components do no t cause injury or poll ute the enviro n­
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 objects such as cup holders or telephone
mountings to the surfaces covering the airbag unit s.
• 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 ha s the training and special equip ·
ment necessary .
• For any work on the airbag system, we strongly re commend
that you see your autho rized Audi dealer o r qualified workshop.
• Never modify the front bumper or parts of the vehicle body.
liJ,,

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& WARNING (co ntinued )
• Always make sure that the side airbag can inflate without
interference:
-Never install se at covers or replacement upholstery over the
front seatbacks that have not been specifically approved by
Audi .
- Never use additional seat cushions that cover the areas
where the side airbags inflate .
- Damage to the original seat covers or to the seam in the area
of the side airbag module must always be repaired immedi­
ately by an authorized Audi dealer.
• The airbag sy stem can be activated only once. After an airbag
has inflated, it must be replaced by an authorized Audi dealer or
qualified technician who has the technical information , training
and special equipment necessary.
• The airbag sy stem can be deployed only onc e. After an airbag
has been deployed, it must be replaced w ith new replacement
parts de signed and approved es pecially for your Audi model
version . Replacement of complete airbag systems or airbag
components must be performed by qualified workshops only.
Make sure that any airbag service action is entered in your Audi
Warranty
& Maintenance booklet under AIRBAG REPLACEMENT
RECORD.
• For safety reasons in severe accidents, the alternator and
starter are separated from the vehicle battery with a pyrotechni c
circuit interrupter .
- Work on the pyrotechnic circu it interrupter must only be
performed by a qualified dealer -risk of an a ccident!
- If the vehicle or the circu it interrupter is scrapped, all appli­
cable safety precautions must be followed .
Controls and equip­ ment Safety first Vehicle operation
<£' For the sake of the environment
U
ndeployed airbag modules and pretens io ners mig ht be classified as
Perch lorate Material -sp ec ial handling may a pply, see
www.d ts c. ca.gov/ha za rdouswaste/pe rchlorate . W he n t he vehicle or
parts of the restraint system including airbag modules and safety
bel ts wi th prete nsio ners are scra pped, all applica ble laws an d regula­
tions m ust be observed. Your authorized Aud i dea ler is familiar with
t hese requireme nts and we recommend tha t you have you r dealer
perform this service for you. •
Other things that can affect Advanced
Airbag performance
Chang ing the ve hicle's suspension system can change the way that
t he Adv anced Airbag System pe rforms in a crash . For example, using
tire-r im combinations not approved by Aud i, lower ing t he veh icle,
c hang ing the st iffness o f the suspe nsio n, incl uding the s prings,
s u spension str uts, shoc k absorbe rs etc. can change the forces that
are meas ured by the airb ag sensors and sen t to the ele ctron ic con trol
uni t. Some suspension changes ca n, for examp le, increase the force
levels measu red by t he sensors and ma ke the airbag sys tem dep loy in
crashes in which it wou ld not deploy if the changes had not bee n
made . Other kin ds of c hanges may re duce the force levels meas ured
by the senso rs and p revent the airbag from dep loyi ng when it should .
The sensors in the safety belt buckle for the d river and front
p assenger se at tell the e le ct ro nic co ntro l mo dule if the sa fe ty belt is
latc hed or not . If the safety be lt is be ing used, the fron t airbag w ill
dep loy at a s ligh tly hig her ra te o f ve hicl e decelerat io n t han if the
safety belt is not be ing us ed. T he refo re, in a part icular collis io n, it is
poss ible that an a irbag wi ll not deploy at a seating posit ion where the
safety belt is being used but wi ll inflate at the posi tion whe re the
safety belt is not bei ng used. It is important that not hing interfere
w ith the s afe ty be lt bu ckles so t hat th e sensor s can sen d the correct
information about safety belt use to the electronic contro l unit. ..
Vehicle care Do-it-yourself service Technical data

-Airbag system PHI- --=--=----------------
& WARNING
Changing th e vehicle 's su spension including use of unappro ved
tire -rim c ombination s can change Advan ced Airbag performan ce
and increas e the risk of serious personal injury in a cra sh .
• Never install suspension component s that do not have the
same performance characteristics as the components or iginally
installed on your veh icle.
• Never u se tir e-rim combinations that have not been approved
by Audi.
& WARNING
Item s stored be tween the safety belt buckl e and the center
console can cause the sensors in the buckle to send the wrong
information to the ele ctroni c control module and prevent the
Advanced Airbag System from w orking properl y.
• Always make sure that nothing can interfere with the safety
belt buckles and that they a re not obstru cted .
<£> For the sake of the environment
Undeployed airbag modu les and pretensioners might be class ified as
Perc hlorate Mate rial -spe cial ha ndling may apply , see
www.dtsc.ca.gov/hazardouswaste/pe rchlorate . When the vehicle or
p arts of t he rest raint sys tem including a irbag mod ules and safe ty
belts with pretensioners are scrapped, all applicable laws and regula­
tions must be observed . Your authorize d Audi dea ler is familiar with
these requirements and we recommend that you have yo ur dealer
perform this serv ice for you. •
Knee airbags
Description of knee airbags
The airbag system can provide supplemental protect ion
to properly re str ained f ro n t seat occupants.
0
Fig. 21 6 Driv er' s
a ir ba g
The a irbag for the dr iver is located in the inst rument pane l under­
neath the steering wheel~ fig . 216, t he airbag for the passenger is
at abo ut the same height in t he instr ument panel underneath the
glove compartment.
Th e knee airbag offers addit ional protec tion to the dr ive r's and
passenger's knees and upper and lower thigh areas as a s upplement
t o the sa fety bel ts.
If the front a irbags dep loy, the knee airbags a lso deploy i n frontal
co llisions above a certain severity~
page 215, "More importan t
t hings to know abou t front airbags ".
Besides the ir no rma l safety function , safety belts work to help keep
t he drive r o r front passenger in po sit ion in c ase of a frontal collision
so that the a irbags can provide protection .
Th e airbag system is not a substitute for your safety belt . Rather, it is
pa rt of the ove rall occ upant re st ra int system in your veh icle. Always
remember t hat the airbag system can on ly help to protect you if you
are wearing your safety be lt and wear ing it pr operly . T his is why you ..