2011 AUDI S8 airbag off

158 Airbag sys te m
the message PA SSENGER AIR BAG OFF or
PASSENGER AIR BAG ON will briefly appear
in the instrument cluster display. Th is is to in ­
form the driver of the current front passenger
a irbag status .
Important safety instructions on
monitoring the Advanced Airbag System
& WARNING
An airbag system that is not functioning
properly cannot provide supplemental pro­
tect ion in a frontal crash.
- If the airbag indicator light comes on, it
means that there may be someth ing
wrong with the Advanced A irbag System .
It is possible that the airbag will inflate
when it is not supposed to, or w ill not in­
flate when it should.
- Have the airbag system inspected imme­ diately by your Aud i dealer.
& WARNING
If the front airbag inflates, a ch ild without
a child restra int, or in a rearwa rd-fac ing
child safety seat, or in a forward-facing
child restrain t that h as not been properly
installed will be serious ly injured and can
be killed.
- Even though your ve hicle is equipped
with an Advanced Airbag System, make certain that a ll children, especially 12
years and younger, a lways ride on the
back seat properly restrained for t heir
age and size.
- Always insta ll forward or rear-facing
child seats on the rear seat -even w ith
an Advanced Airbag System .
- If you must install a rearward-facing
child seat on the front passenger seat
because of except iona l circumstances
and the
PASSENGER AIR BAG OFF light
does not appea r and stay on, immediate­
ly install the rea r-faci ng chi ld seat in a
re ar se ating position and have the ai rbag
system inspected by your Aud i dealer.
-
- A t ight tether or other strap on a rea r­
ward-facing child restraint attached to
the front passenger seat can put too muc h pressure on the weight-sensing
mat in the seat and reg iste r more weight
than is actually on the seat . The heav ie r
weight regis tered can make the system
wo rk as tho ugh an adult we re on the seat
and deploy the Advanced Airbag when it
m ust be suppressed causing serious or
even fata l injury to t he ch ild .
- If , in exceptiona l circumstances, you
m ust install a forward-facing c hild re­
straint on the front passenger seat, al­
ways move the seat into its rearmost po­ sition in the seat's fore and aft adjust­
ment range, as fa r away from the a irbag
as poss ible . The backrest must be ad just ­
ed to an upright pos ition . Make s ure that
the
PASSENGER AIR BAG OFF light
comes on and stay s on all the time when­
eve r the ignit ion is switched on.
& WARNING
-
- If the PASSENGER AIR BAG OFF light
does not go out when an a dult is sitting
on the front passenger seat after taking
the steps described above, make sure the
ad ult is prope rly seated and restra ined at
one of the rear seat ing pos itions.
- Have the airbag system inspected by
your Audi dea ler before transporting
anyone on the front passenger seat.
{D Tips
If the weight-sensing mat in the front pas ­
senger seat detects an empty seat, the
front airbag on the passenger side will be
turned off , and the
PASSENGER AIR BAG
OFF
light will stay on .
Repair, care and disposal of the airbags
Parts of the airbag system a re i nstalled at
many d ifferent p laces o n your Aud i. Insta lling,
removing, servicing or repa iring a p art i n a n
area o f the veh icle can damage a par t of an .,..

Knee airbags
Description of knee airbags
The knee airbag system can provide supple ­
mental protection to properly restrained
front seat occupants.
Fi g. 1 52 Driver's a irbag
The drive r knee airbag is in the instr ume nt
panel underneath the steeri ng wheel
¢ fig . 152, th e ai rbag for the passenger is at
about the same height in the instrument pan ­
e l underneath the g love compartment.
The knee a irbag offers add itiona l pro tect io n
to the driver's and passenger 's knees and up­
per and lower thigh areas as a supp lements
the protect ion provided by the safety belts.
If the front airbags deploy, the knee airbags
a lso deploy in frontal collisions when the de­
p loyment thresho ld stored in the contro l unit
is met
r::!;> page 154, More important things to
know about front airbags.
In addition to t heir normal safety function,
safety be lts he lp keep the driver or front pas­
se nger in posit ion in a frontal coll is ion so that
the airbags ca n prov ide supplemental protec­
tion .
T he airbag system is not a s ubst itute for yo ur
safety be lt. Rather, it is part of the overall oc­
cupa nt restraint system in your veh icle. Al­
ways remember that the airbag system ca n
only help to pro tect you if you are wea ring
your safety belt and wear ing it prope rly. Thi s
i s w hy you sho uld always wea r yo ur safety
be lt, not just because the law requires yo u to
do so
¢ page 137, General notes .
Airbag system 161
The safety belt buckle fo r the driver a nd front
seat passe nger have switches that tell the air­
bag control module if th e safety belt is being
u sed or not . If the safety belt is being used,
the knee airbag w ill deploy at a s light ly higher
rate of deceleration t han if t he be lt is not be ­
i ng used. Therefore, in a pa rticular co llision, it
is possible that an airbag will not dep loy at a
seat ing pos ition w he re t he safety be lt is being
u sed b ut w ill infl ate a t the po sition where the
safety belt is no t being used.
Remember too, a irbags wi ll deploy o nly once
and on ly in certa in kin ds of ac ciden ts -yo ur
sa fe ty belts a re a lw ay s there t o offer p rotec ­
t ion in those accide nts in which airbags are
not supposed to dep loy o r when they have al ­
ready dep loyed, for example when your vehi­
cle strikes or is struck by another after the
first collision.
This is just one of the reasons why an airbag is
not a s ubstitute fo r th e safety be lt . T he airbag
system works most effect ively when used with
the safety be lts. Therefore, always wea r your
safety belts correct ly.
It is important to remember that while the
supplementa l knee airbag system is designed
to reduce the li kelihood of ser ious injuries ,
other injur ies, for example, swelling, bru is ing,
minor abras ions and frict ion bu rns can a lso
occur when an airbag in flates.
The knee airbag system basically consists
of:
- The electronic control module
- Two inflatable a irbags (a irbag an d gas gen-
erator), one for the d river and one fo r the
front passenge r
- The a irbag indicator lig ht in t he i nstrument
pane l
The knee airbag system will not deploy :
-when the ignit io n is switched off
- in frontal collisions when the de celera tion
meas ured by the contro l unit is too low
- in side co llisions
- in rear-end col lis ions
- in rollove rs

164 Airbag system
is another reason why you should always wear
your safety belts, not just because the law re­ quires 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, swelling, bruising,
and minor abrasions can also be associated
with deployed side airbags . Remember too,
side airbags will 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 necessar ily an indi­
cation of over-sensitive or failed airbag activa­
tion. In some collisions, both front and side
airbags may inflate . Remember too, that air­
bags will deploy only once and only in certain
kinds of collisions -your safety belts are al­
ways there to offer protection in those acci­
dents in which airbags are not supposed to
deploy or when they have already deployed.
The side airbag system will not deploy:
- when the ignition is switched off
- in side collisions when the acceleration
measured by the sensor is too low
- in front-end collisions
- in rear-end collisions
- in rollovers .
In some types of accidents the front airbags,
side curtain airbags and side airbags may be
tr iggered together.
A WARNING ,.
- Safety belts and the airbag system will
only prov ide protection when occupants
are in the proper seating position
~page 165.
-If the airbag indicator light comes on
when the vehicle is being used, have the
system inspected immediately by your
authorized Audi dealer. The airbag may
not work properly when the vehicle ac­
celeration in a side collision is high
enough to activate the airbag.
-
How supplemental side airbags work
Side airbags deploy instantly and can help re­
duce the risk of upper torso injuries for occu­
pants who are properly restrained.
Fig. 155 Inflated side airbags on left side of veh icle,
rear side a irbag
When the system is triggered, the airbag is
filled with propellant gas and breaks through a seam in the seat surface area marked "AIR­
BAG ".
It expands between the side trim panel
and the passenger. In order to help provide
this addit ional protection, the side airbag
must inflate within a fraction of a second at
very high speed and with great force. The sup­
plemental side airbag could injure you if your
seating position is not proper or upright or if
items are located in the area where the sup­
plemental side airbag expands. This applies
especially to children
q page 169, Child Safe­
ty . Supplemental side airbags inflate between
the occupant and the door panel on the side of the vehicle that is struck in certain side col­
lision
q fig. 155.
Although they are not a soft pillow, they can "cushion" the impact and in this way they can
help to reduce the risk of injury to the upper
part of the body.
A fine dust may deve lop when the airbag de­
ploys. This is normal and does not mean there
is a fire in the vehicle.

166 Airbag system
larger, unclosed openings in the door
panel.
- Never drive with interior door trim pan­
els removed.
- Never drive when parts have been re­
moved from the inside door panel and
the openings they leave have not been
properly closed.
- Never drive when loudspeakers in the
doors have been removed unless the
speaker holes have been properly
closed.
-Always make certain that openings are
covered or filled if additional speakers
or other equipment is installed in the
inside door panels.
- Always have work on the doors done by
an authorized Audi dealer or qualified
workshop.
Side curtain airbags
Description of side curtain airbags
The side curtain airbag system can provide
supplemental protection to properly restrain ­
ed occupants.
Fig . 156 Side curtain a irbags, d river 's side: s ide curta in
airbag location
The side curtain airbags are located on both
sides of the interior above the front and rear
side windows
c:.> fig. 156 . They are identified
by the word "AIRBAG" on the windshield
frame and the center roof pillar.
The side curtain airbag system supplements
the safety belts and can help to reduce the risk of injury for occupants' heads and upper
torso on the side of the vehicle that is struck in a side collision.
The side curtain airbag in­
flates in side impacts and only when the vehi­ cle acceleration registered by the control unit
is high enough . If this rate is below the refer­
ence value programmed into the control unit,
the side airbags will not be triggered, even
though the car may be badly damaged as a re­ sult of the collision .
It is not possible to de­
fine an airbag triggering range that will cover
every possible angle of impact, since the cir­
cumstances 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 .
c:.> page 167, How side cur­
tain airbags work .
Aside from their normal safety function, safe­
ty belts work to help keep the driver or front
passenger in position in the event of a colli­
sion so that the side curtain airbags can pro­
vide protection .
The airbag system is not a substitute for your
safety belt . Rather, it is part of the overall oc­
cupant restraint system in your vehicle. Al­
ways remember that the airbag system can
only help to protect you if you are wear ing
your safety belt and wearing it properly . This
is another reason why you should always wear
your safety belts, not just because the law re­
quires you to do soc:.>
page 137, General
notes .
It is important to remember that while the
side curtain airbag system is designed to help
reduce the likelihood of ser ious injuries, other
injuries, for example, swelling, bruising, and
minor abrasions can also be associated with
these airbags upon deployment. Remember
too, these airbags will deploy only once and
only in certain kinds of accidents -your safety
belts are always there to offer protection .
The side curtain airbag system basically
consists of:
- The electronic control module and external
side impact sensors
- The side curtain airbags above the front and
rear side windows

-The airbag indicator light in the instrument
pane l
The airbag system is moni tored ele ct ro ni ca lly
t o make certain it is f unct ion ing properly a t all
times. Each time you switch on the ignition,
the airbag system indicator light wi ll come on
for a few seconds (se lf d iagnost ics) .
The side curt ain airbag is not activated:
- if the igni tion is switched off,
- i n s ide collisions when the acce lerat ion
measu red by the sensor is too low,
- i n rear-end collisions,
- in rollovers.
A WARNING
-
- Safety belts and the a irbag system will
o nly p rov ide protection whe n occ upants
are in t he pro per sea ting posit io n
c::> page 54, Gener al recommendations.
- If the airbag indicato r ligh t comes on
w hen the veh icle is be ing u sed, have the
system inspected immedia tely by your
au thorized Audi dealer. T he side curta in
air bag may not work properly even whe n
the vehicle acceleration in a side coll ision
is h igh enough to act ivate the airbag .
How side curtain airbags work
Side curtain airbags con work together with
side airbags to help reduce the risk of head
and upper torso injuries for occupants who
are properly restrained.
Fi g. 1 57 Ill ust rat ion of p rincip le: In fl ated side cu rt a in
air bags on t he left side
The side curtain air bags inflate between the
occ upant and the windows on the side of the
"' N ;g
±
"" ID
A irbag system 167
vehicle that is s truck in a side col lision
c::> fig. 157 .
When the system is t rigge red, the side curta in
a irbag is filled w ith propellant gas and breaks
th ro ugh a seam above the front and rear side
w in d ows identified by the AIRBAG labe l. In or ­
der to he lp provide this additional protection,
t h e side curtain a irbag m ust inflate within the
blink of an eye at very high speed and with
great fo rce . The side curtain a irbag could in ­
jure you if your seating pos it io n is not prope r
o r upright or if items ar e located in the area
whe re the supplemen tal side curta in a irbag
i nfl ates. This applies espe cially to ch ild ren
c::> page 1 69 .
Although they are not a soft p illow, side cur­
ta in a irbags can "cushion" the impact and in
th is way they can hel p to reduce the risk of in­
j u ry to the head a nd the upper part o f the
body.
A fine dust may deve lop w hen the a irbag de­
ploys . Th is is qui te no rm al and does not mean
t h ere is a fire in the vehicle .
Important safety instructions on the
side curtain airbag system
Airbags are only supplemental restraints. Al­
ways properly wear safety belts and ride in a
proper seating position .
There is a lot that yo u and your passengers
must know a nd do to he lp the safety belts and
airbags do t heir job to provide supplemental
protection .
A WARNING
Improperly wearing safety belts and im­
p roper seating pos it io ns increase the risk
of ser ious personal inju ry and death when­
eve r a vehicle is being used .
- Never let occupants place any pa rts of
thei r bod ies in t he area from which the
side curta in a irbags inf late.
- Always ma ke s ure that the s ide curtain
a irbags can infla te witho ut interference.
-
Unsui table a ccessor ies fitted inside the ..,

170 Child Safety
-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 in exceptiona l circumstances and
the
PASSENGER AIR BAG OFF light does
not come on and stay on, immed iately
install the rear-facing child safety seat in
a re ar seating posit ion and have the air­
bag system inspec ted immediately by
yo ur Audi dealer.
_& WARNING
If, in exceptional circumstances, you must
install a forward -facing child restraint on
the front passenger's seat:
- Always make su re the forward-fac ing
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 man ufacturer's in­
struct ions 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 poss ible before installing
the ch ild restraint. The backrest must be
adjusted to an upr ight 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
Your vehicle is equipped with a front "Ad ­
vanced A irbag System" in compliance wit h
United States Federal Motor Vehicle Safety
Standard (FMVSS) 208 as app licab le at the
time your veh icle was manufactured.
The Advanced Airbag system in your vehicle
has been certified to meet the " low-risk" re­
qu irements for 3- and 6-year old ch ildren on
the passenger s ide and small adults on the
driver side . The low risk deployment criter ia are intended
to red uce the risk of in jury
thro ugh interaction with the airbag that can
occur, for examp le, by being too close to the
steering wheel and instrument panel when
the a irbag inflates. In addition, the system
has been certified to comply with the "sup ­
pression" requirements of the Safety Stand­
ard, to turn off the front a irbag for infants up
to 12 months who are restrained on the front
passenge r seat in child restra ints that are list­
ed in the Standard .
Even though your veh icle is equipped with an
Advanced Airbag system, a ll children, espe­
cially those 12 years and younger, should al­
ways ride in the back seat properly res trained
for their age and size . The airbag on the pas­
senger side makes the front seat a potentially
dangerous place for a ch ild to ride . The front
seat is not the safest p lace for a child in a for­
ward-fac ing ch ild safety seat. It can be a very
dangerous place for an infant or a larger child
in a rearward-fac ing seat .
Advanced Airbags and the weight­
sensing mat in the front seat
The Advanced Airbag System in you r vehicle
detects the presence of an infant or child in a
child restraint on the front passenger seat us ­
ing the weight-sens ing mat in the seat cush­
ion and the sensor below the safety belt latch
on the front passenger seat that measures the
tens ion on the safety belt .
The weight-sensing mat measures total
weight of the child and the child safety seat and a ch ild blanket on the front passenger
seat. The we ight on the front passenger seat
is related to the design of the ch ild restraint
and its "footp rint", the s ize and shape of the
bottom of the child res traint as it sit s on the
seat. The weight of a ch ild restra int and its
"footprint" vary for different kinds of child re­
straints and for the different mode ls of the
same kind of chi ld restraint offered by ch ild
restraint manufacturers.
T he weight ranges fo r the individual types,
makes and models of child restraints that the .,._

NHTSA has specified in the Safety Standard
together with the weight ranges of typical in­
fants and typical 1 year-o ld child have been
stored in the control unit of the Advanced A ir­
bag System. When a child restraint is being
used on the front passenger seat with a typi­
cal 1 year-old ch ild, the Advanced Airbag Sys­
tem compares the we ight measured by the
weight sens ing mat with the informat ion s to r­
ed i n the electron ic cont rol unit.
The electron ic control unit a lso registers the
tension on the front passenger safety be lt .
The te nsio n on the safety be lt fo r the front
passenger seat will be d iffe rent for an ad ult
who is properly using the safety belt as com­
pa red to the tension on the be lt when it is
used to attach a child restraint to the seat.
T he sensor below the latch for the safety be lt
for the front seat passenger measures the t ension on the be lt. The input from this sen­
sor is then used with the we ight to "decide",
whether there is a ch ild restrai nt with a typ ica l
1 year-o ld child on the front passenger seat
and whether or no t the airbag mus t be turned
off.
Child restraints and Advanced Airbags
Regard less o f the chi ld res traint that you use,
make sure that it has been certified to meet
United States Federal Motor Vehicle Safety
Standards and has been certified by its manu­
facturer for use with an airbag. Always be sure
that the child restraint is properly insta lled at
one of the rear seat ing pos itions .
If in excep­
tional c ircumstances you must use it on the
fr ont passenge r seat, caref ully read all of the
information on c hild safety and Adv ance d Air­
b ags and heed a ll of the app licable WAR N­
I NGS . Ma ke certai n that the child restraint is
correctly recognized by the weig ht-sensing
mat inside the front passenger seat, that the
front passenger airbag is turned off and that
t he airbag status is always correctly signaled
by the
PASSENGE R AIR BAG OFF light .
Many types and models of child restraints
h ave been ava ilable over the years, new mod­
els are introduced regularly incorporating new
Child Sa fet y 1 71
and imp roved des igns and o lde r models a re
taken out of production . Chi ld restraints are
not standard ized. Child rest raints of the same
type typically have d ifferent weights and si zes
and different 'footpr ints,' the size and shape
of the bottom of the ch ild restrai nt that sits
o n the sea t, when they a re installed on a veh i­
cle seat . These diffe ren ces make it v irtually
i mpossible to certify complian ce with t he re­
quiremen ts for advanced airbags with eac h
and every ch ild restraint tha t h as eve r been
so ld in the past or wi ll be so ld over the course
of the useful life of your vehicle.
Fo r thi s reason, the Uni ted S ta tes Na tional
Hig hway Traffic Safety Adm inist rat ion has
published a list o f specific type, makes and
models of child restraints that must be used
to certify comp liance of the Advanced Airbag
System in your veh icle with the suppression
requirements of Federal Motor Vehicle Safety
Standard 208 . These child restraints are :
Subpart A - Car bed child restra ints
Model
A ngel Guard A ngel
Ride AA2403FOF
Manufactured on or
after
September 25, 2007
Subpart B - Rear-facing child restraints
Model Manufactured on or
after
Century SmartF it December 1, 1999
4543
Cosco Arriva September 25, 2007
I
22-013PAW and base
22-999WHO
I
Evenflo Discovery Ad- December 1, 1999
just Right 21 2
Evenflo First Choice December
1, 1999
204
Graco Infant 8457 December 1, 1999
Graco Snug ride September 25, 2007 Peg Perego Pr imo Vi- September 25, 2007
aggio SIP IMUNOOUS
•
•
....

172 Child Safety
Subpart C - Forward-facing and
convertible child r estra in ts
Model Manufactured on or
after
Britax Roundab out September 25, 2007
E 9 L02xx
Cos co Touriva 02519 December 1, 1999
Cosco Summit Deluxe September 25, 2007
High Back Booster
22-262
Cosco High Back September 25, 2007
Booster 22-209
Evenflo Tribu te V Sep tember 25 , 200 7
379xxxx
Evenflo Medallion December 1, 1999
254
Evenflo Generations
352xxxx
Graco ComfortSport
Graco Toddler Safety
Seat Step 2 September 25, 2007
September 25, 2007
September 25, 2007
Graco Platinum Cargo September 2S, 2007
8_ WARNING
To reduce the risk of serious injury, make
sure that the
PASSENGER AIR BAG O FF
light comes on and stays on whenever a
child restraint is installed on the front pas­
senger seat and the ignition is sw itched
on .
- Take the child restraint off the front pas­
senger seat and install it properly at o ne
of the rea r seat positions if the
PASSEN­
GER AIR BAG OFF
light does not stay on.
- Have the airbag system inspected by
yo ur autho riz ed Aud i dealer immediat e­
ly.
The c hild seats listed in catego ries A to C
have been tested by A udi on ly for th e Ad­
vanced Ai rbag function .
Important safety instructions for using
child safety seats
Correct use of child safety seats substantially
reduces the risk of injury in an accident!
As the dr iver, yo u are respons ib le for the safe­
ty of everybody in the veh icle, especially ch il­
dren:
.,. Always use the right ch ild safety seat for
each child and always use it properly
~ page 174.
.,. Always carefu lly fo llow the child sa fe ty seat
manufac turer's inst ruct ions on how to ro ute
t he sa fe ty belt properly through the child
safety seat .
.,. When using the vehicle safety belt to install
a child safety seat, you must first activate
the convertib le locking retractor on the
safety belt to prevent the child safety seat
from mov ing
r=> page 178.
.,. Push the c hild safety seat down with you r
full weight to get t he safety be lt really tight
s o that t he seat ca n no t move fo rward o r
sideways more th an one inch
(2 .5 cm) .
.,. If a s trap o r tet her is being used to tie the
child safety seat to the front passenger
seat, make sure that it is not so tight that it
causes the weight-sensing mat to measure
more weight than is actually on the seat .
Always remember : Even tho ugh yo ur vehicle is
equipped with an Advanced Airbag system, all
children, especially those 12 years and young­
er, shou ld always r ide in the back seat proper­
ly restra ined fo r the ir age and size .
A WARNING
-Not usi ng a child safety seat, using t he
wrong child safety s eat o r imprope rly in­
stalling a c hild res tra int increases the risk
of ser ious perso na l in ju ry an d de ath.
- All vehicle oc cupants and espe cially chil­
d ren mu st always be res tra ine d pr operly
wheneve r rid ing in a vehicle.
-