2009 AUDI S8 ABS

-S
afe ty b elts ----=-----------------
- Make sure that your passengers also b uckle up and prop­
erly wea r th eir sa fety belts.
Protect children wit h a child restraint system appropriate
for the size and age.
The warning light i in the instrument cluster lights up when the
ignition is switched on as a reminder to fasten the safety belts. In
addition , you will hear a warning tone.
After the ignition is switched on, the warning light in the instrument cluster will a lways come on for about 6 seconds and if the driver has
not fastened the safety belt, a warning tone will also sound for
about 6 seconds . As soon as the driver has fastened the safety belt,
the warning tone will stop and the warning light will go out .
If the driver or front seat passenger have not buckled -up within
about 10 seconds after the warning tone has stopped and the
vehicle is moving faster than about 15 mph, the warning tone will
sound again for about 6 seconds and then stop for 24 seconds and
then repeat this reminder sequence for a maximum of 2 minutes. At
speeds be low 5 mph, the warning tone will not sound.
Fa sten your safe ty belt and m ake su re that your p assengers also
properl y put on th eir s afet y belts .
& WARNING
• Safety belt s are the single mo st effective mean s available to
reduce th e risk of ser ious injur y and death in a utomobile acci­
dent s. For your prote ction and th at of your pas senger s, alwa ys
c orre ctl y we ar safety belt s when t he vehicle is moving .
• Failure t o pay att ention to th e warning light that co me on,
c ould lead to per sonal injury .•
Why safety belts?
Frontal co11isions and the law of physics
Front al crashes create very strong forces for pe ople riding
in vehicles.
F ig. 222 U nbel ted
o cc up ants i n a ve hicle
he ading for a wa ll
Fi g. 223 T he vehicle
c ras hes in to t he wa ll
The physical principles are simple. Both the vehicle and the passen­
gers possess energy which varies with vehicle speed and body
we ight . Engineers cal l this energy "kinetic energy ."
T he higher the speed of the vehicle and the greater the vehic le's
we ight, the more energy that has to be "absorbed" in the crash .
Vehicle speed is the most significan t factor. If the speed doubles
from 15 to 30 mph (25 to 50 km/h), the energy increases 4 times! .,

llffl_....::S~a ~f ~e ~ty ~ b~ e~ l~ t ~s ____________________________________________ _
Safety belts protect
People think it's possible to use the hands to brace the
body in a minor collision. It's simply not true!
Fig . 22 6 Driv er is
cor rec tly r estrai ned in
a su dden b raking
m an euver
Safety belts used properly can make a big difference. Sa fety belts
help to keep passengers in their seats, gradually reduce energy
levels app lied to the body in an accident, and help prevent the
uncontrolled movement that can cause serious injuries. In addition,
safety be lts reduce the danger of being thrown out of the vehic le .
Safety belts attach passengers to the car and give them the benefit
of being s lowed down more gently or "softly" through the "give" in
the safety belts, crush zones and other safety features engineered
into today's vehicles. By "absorbing" the kinetic energy over a longer period of time, the safety belts make the forces on the body
more "tolerable" and less likely to cause injury .
Altho ugh these examples are based on a frontal co llision, safety
belts can a lso substantially reduce the risk of injury in other kinds
of crashes . So, whether you're on a long trip or just going to the
corner store, a lways buckle up and make sure others do, too. Acci­
dent statistics show that vehicle occupants properly wearing safety
belts have a lower ris k of being injured and a much better chance of
surviving an accident. Properly using safety belts also greatly
increases the abi lity o f the supplementa l airbags to do their job in a
collision . For th is reason , wearing a safety belt is legally required in
most countries including much of the United States and Canada. Although your Audi is equipped with airbags, you sti
ll have to wear
the safety belts provided . Fron t airbags, for example, are activated
only in some frontal collisions . T he front airbags are not activated in
a ll frontal col lisions, in side and rear collisions, in roll ove rs or in
cases where there is not enough dece leration through impact to the
front of the vehicle . The same goes for the other airbag systems in
your Audi . So, always wear your safety belt and make sure every ­
body in your vehic le is properly restrained! •
Important safety instructions about safety
belts
Safety belts must always be co rrectly positioned across
t he strongest bones of your body.
Always wear safety belts as illustrated and described in
th is chapter.
Make s ure tha t your safe ty belts ar e always ready for use
and are not damaged .
& WARNING
Not wearing safety belts or w earing them improperl y increase s
the risk of seriou s per sonal injury and death . S afe ty belt s can work
onl y when used corre ctl y.
• Alway s fa sten your s afety belt s correctl y before dri ving off and
make sure all p assenger s ar e correctly restrain ed.
• For m aximum protect ion , safet y belt s must always be po si­
ti oned properly on the body .
• Never strap more th an one person , includi ng sm all children ,
into any belt.
• Never pla ce a s afety belt ove r a child sitting on your lap .
• Alway s keep feet in t he foot well
in front of the seat while the
vehicle is being driven .
~

Airbag system -----------------=~-
& WARNING (continued )
• Airbag work most effectively when used with properly worn
safety belts.
• Therefore , always wear your safety belts and make sure that
everybody in your vehicle is properly restrained.
& WARNING
A pe rson on the front passenger seat , especially infants and small
children , will receive serious injuries and can even be killed by
being too close to the airbag when it inflates .
• Although the Advanced Airbag System in your vehicle is
designed to turn off the front passenger airbag if an infant or a
small child is on the front passenger seat, nobody can absolutely
guarantee that deployment under these spe cial conditions is
impossible in all conceivable situations that may happen during
the useful life of your vehicle.
• The Advanced Airbag System can deploy in accordance with
the "low risk" option under the U .S . Federal Standard if a child that
is heavier than the typical one -year old child is on the front
passenger seat and the other conditions for airbag deployment
are met.
• Accident statistics have shown that children are generally safer
in the rear seat area than in the front seating position .
• For their own safety , all children , especially 12 years and
younger , should always ride in the back properly restrained for
their age and size. •
Advanced front airbag system
Your ve hicle is equipped with a front Advanced Airbag System in
c o mp lia nce wi th United States Fede ral Moto r Vehicle Sa fety Stan ­
dard 208 as appl icab le at the time your vehicle was manufactured.
Controls and equip­
ment Safety first Vehicle operation
T
he front Advanced Airbag System supplements the safety bel ts to
p ro v id e ad ditional p rotecti on for t he dr iver's an d fro nt p assenger's
heads and upper bodies in fronta l cras hes . The ai rbags inflate only
in fro ntal im pac ts whe n the vehic le dece le ra tio n is h igh enoug h.
T he fron t Adva nced Airbag System for the fron t seat occ upa nts is
not a substitute for your safety belts . Rather, it is part of the overa ll
occupa nt rest rai nt syste m in you r veh icle. A lways r em emb er that
the ai rbag system can only help to protect you, if you are sitting
u pr igh t, w ear ing yo ur safety b elt and w earin g it p ro perly . This is w hy
you and your passeng ers must a lways be prop erly r estrained, not
ju st beca use the law req uires y ou to be .
The Ad va nced A irbag System in you r ve hicle has been certi fied t o
meet the " low risk" req uirements f or 3 a nd 6 yea r-o ld child ren on the
p asse nger sid e and very s mall adu lts on t he dr iver s ide. The l ow risk
dep loyment crite ria are intended to he lp reduce t he ris k of in jury
th rough interac tion w ith the front a irb ag that can occur, for
examp le, by being too close to the stee ring whee l and instrument
p a nel wh en the a irbag i nflates.
I n add ition, the s yst em has been cert if ied to comply with the
"su ppressio n" re quir emen ts of the Sa fe ty Standa rd, to tu rn off th e
fr ont a irba g for in fa nts 12 months old and youn ger who a re
rest rained on the front passenger seat in child restraints that are
li ste d i n the Sta ndard:::::,
page 247 , "Child r estrai nts and Adva nced
A irbags".
"S upp ression" req uires the fron t airb ag on th e pas se nger s ide to be
turned off if:
• a child up to a bout one yea r of age is restrained on the front
passen ger seat in on e of the re ar -faci ng or forward -fac in g i nfa nt
restra ints listed in Federal Motor Vehicle Safe ty Standard 208 with
whi ch the A dvanc ed A irbag Sys tem in your vehic le w as c ertifi ed. For
a listing of the child rest raints that were used to cert ify your
v ehi cle's c om plia nce w ith the US S afet y Standar d:::::,
pag e 24 7,
• weight le ss than a threshold leve l stored in the cont ro l u nit is
d etected on the fr ont passe ng er sea t. .._
Vehicle care Do-it-yourself service Technical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
When a person is detected on the front passenger seat, weighing
m ore tha n the to tal weigh t of a c hild that is ab out 1 year old
restra ined in one of the rear -fac ing or forward -facing infant
r es traints (listed in Fede ra l M oto r Vehicle Safe ty S ta ndard
208 with
which the Advanced Airba g System in your ve hic le was certified),
the fro nt airbag on the pas se nge r si de may o r may not dep loy .
The
PASSENGER AIR BAG OFF li gh t com es o n when the elect ro ni c
contro l unit detects a total weight on the front passenger seat that
requ ires th e front ai rbag to be tur ned off. If th e
PASSENGER AIR BAG
OFF
light does not come on, the front airbag on the passenger side
h as not been tu rned off by the c ontrol unit and can depl oy if the
control unit senses an impact that meets the conditions stored in its memo ry .
If t he to tal we ight on the fro nt passen ge r seat is more t han t hat of
a typical
1 year -old, but less than the weight of a small adult, the
fro nt a irba g on t he passen ger side may dep loy (the
PASSENGER AIR
BAG OFF
li ght does not come onl.
For example, the airbag may deploy if:
• a small ch ild that is heav ie r th a n a typ ical 1 yea r-old ch ild is o n
the front passenger seat (regardless of whether the child is in one
o f th e c hild seats listed
~ page 24"11,
• a ch ild wh o ha s ou tg rown chi ld re strain ts is on the fron t
passen ger seat.
If the front passenge r airbag is turned off, the
PASSENGER AIR BAG
OFF
lig ht in the ce nter of t he inst rument panel wi ll co me on a nd stay
on.
The fron t airb ag o n the passenger side may
not deploy (the
PASSENGER AIR BAG OFF lig ht does not i llu m ina te and s ta y lit) i f:
• a small adu lt or teenager is on the front passenger seat
• a passenger who is no t sitt ing up rig ht with the ir back aga inst a
non -reclined bac krest with their feet on the vehicle f loor in front of
t h e seat is on th e fro nt pass enger se at.
If the front passenger airbag deploys, the Federa l Standard requires
t he a irbag to m eet th e "low ri sk" deploy ment criter ia to he lp reduce the risk of injury through interaction with the airbag. "
Low risk"
d eployme nt occ urs in those cras hes that ta ke place a t lower de ce l­
erations as defined in the electronic contro l unit~
page 231 .
Always remember :
Even though your vehicle is equipped with
A dva nced Air bags , th e sa fes t place fo r chi ldren is properly
r estra ined on the back seat. Please be sure to read the important
i nf orm atio n in t he sect ions t hat follow and b e sur e to hee d all of the
WARN INGS.
& 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 posit ion 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 220 .
& 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 .
• Although the Advanced Airbag System in your vehicle is
de signed 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 dur ing the useful life of
your vehicle.
• The inflating airbag will hit the child seat or infant carrier with
great force and will smash the child seat and child against the
ba ckrest , center arm rest , door , or roof .
• Always install rearward -facing child restraints on the rear seat . ..,.

Airbag system -----------------=~-
& WARNING (continued )
-Never install seat covers or replacement upholstery over the
front seatbacks that ha ve not been specifically approved by
Audi .
- Never use additional seat cush ions that cover the areas
where the side airbags inflate.
- Damage to the or iginal seat covers or to the seam in the area
of the s ide airbag module must always be repaired immedi ­
ately by an authorized Audi dealer .
• The airbag system 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 nece ssary .
• The airbag system can be deployed only once . After an airbag
has been deployed , it must be replaced with new replacement
parts designed and approved especially 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 you r 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 pyrotechnic
c ircuit interrupter .
- Work on the pyrotechnic circuit interrupter must only be
performed by a qualified dealer -risk of an accident!
- If the vehi cle or the circuit interrupter is scrapped , all appli ­
cable safety precautions must be followed .
For the sake of the environment
Undepl oyed airbag m odu les a nd preten sioners m ig ht b e class if ied
as Perchlorate Material -specia l handling may apply, see
www .dtsc.ca.gov/hazardouswaste/perchlorate. When the vehicle or
Controls and equip­
ment Safety first Vehicle operation
parts of the restraint system inc
luding a irbag modules and safety
be lts with p re tensione rs are sc rapped, a ll a ppl icable laws an d regu ­
lations must be observed . Your authorized Audi dea ler is fami liar
wi th the se requi rements and we recomme nd that you have y our
dea ler perform this service for you. •
Other things that can affect Advanced Airbag
performance
Changing the veh ic le 's suspens ion s ystem can change th e way that
t he Adva nced Air bag Sys tem perfo rm s in a crash. F or e xam ple,
using tire -r im combinations not approv ed by Audi, lower ing the
ve hic le, c hangi ng th e st iffne ss of the su spen sion , inclu ding the
springs, suspension struts, shock absorbers e tc . can change the
forc es that are measu re d b y th e a irbag sens ors and sent to the elec ­
t ron ic control u nit. Some sus pensio n chan ges can , for examp le ,
inc rea se the f orce le v els mea sured by the senso rs and make the
a irb ag sys te m de plo y in cras hes in whi ch it wo uld not de p loy i f the
changes had not been made . Other kinds of changes may reduce
t he force le v e ls measured by t he se nso rs a nd preve nt t he a irba g
from deploying when it should .
T he se nsor s in th e safe ty bel t buckl e f or th e d river a nd front
passen ger seat te ll the e lectronic control module if the safety belt is
l a tc h e d or n ot. If t he safety belt i s being use d, th e fr ont ai rbag w ill
dep loy at a s lightly h ig her rate of v eh ic le dec elerat ion t han if the
safet y belt is not being used . Ther efore, in a partic ular collision, it is
poss ible that an airba g w ill not deplo y at a seati ng pos itio n wh ere
the safety be lt is be ing used but wi ll inflate at the position where the
sa fe ty be lt is no t being used . It i s im porta nt that n othi ng i nterfe re
with the safety belt b uckles so that the sensors can send the correct
i n fo rm ati on about sa fety belt use t o th e el ectronic con trol unit. _..
Vehicle care Do-it-yourself service Technical data