wheel AUDI A6 2018 Service Manual

Airbag system
Airbag system
Important information
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints . For
airbags to do their job, occupants must always
properly wear their safety belts and be in a prop­ er seating position.
For your safety and the safety of your passen­
gers, before driving off, always:
.,. Adjust the dr iver's seat and steering wheel
properly~ page 126,
.,. Adjust the front passenge r's seat properly
~page 47 ,
.,. Wear safety belts p roperly ~page 136,
.. Always properly use the proper child restraint
to protect chi ldren
~page 166 .
In a coll is ion, airbags must inflate within the
blink of an eye and with considerable force. The
supp lemental airbags can cause injuries if the
driver or the front seat passenger is not seated
properly. Therefore in order to he lp the airbag to
do its job, it is important, both as a dr iver and as
a passenger to sit properly at all t imes.
By keeping room between your body and the
steering whee l and the front of the passenger
compartment, the air bag can inflate fully and
completely and provide supplemental protect ion
in certain frontal
coll isions¢ page 126, Correct
passenger seating positions .
For details on the
operation of the seat adjustment controls
¢ page 47.
It's especially important that children are proper­
ly restrained
¢pag e 166.
There is a lot that the driver and the passengers
can and must do to help the ind iv idual safety fea­
tures installed in your Audi work together as a
system.
Proper seating posit ion is important so that the
front airbag on the driver side can do its job. If
you have a physical impairment or cond ition that
prevents you from s itting properly on the driver
seat with the safety be lt properly fastened and
142
reaching the pedals, or if you have concerns with
regard to the function or operation of the Ad­
vanced Airbag System, please contact your au­
thorized Audi dea ler or qualified workshop, or
ca ll Audi Customer Relations at 1-800-822-2834
for poss ible modifications to your vehicle .
When the airbag system dep loys, a gas generator
will fill the airbags, break open the padded cov­ ers, and infla te between the steering wheel and
the driver and between the instrument panel and
the front passenger. The a irbags w ill deflate im­
med iate ly after deployment so that the front oc­
cupants can see through the windsh ield aga in
without interruption.
All of th is takes place in the blink of an eye, so
fast that many people don't even realize that the
a irbags have deployed. The airbags also inflate
with a great deal of force and nothing should be
in the ir way when they deploy. Front airbags in
combination with properly worn safety belts slow
down and limit the occupant's forward move­
ment. Together they help to prevent the driver
and front seat passenger from hitting parts of
the ins ide of the vehicle while reduc ing the forces
acting on the occupant dur ing the crash . In th is
way they help to reduce the risk of injury to the
head and upper body in the crash . Airbags do not
protect the arms or the lower parts of the body.
Both front airbags will not inflate in all frontal
collisions. The triggering of t he a irbag system de­
pends on the veh icle deceleration rate caused by
the collis ion and registered by the electronic con­
trol unit. If this rate is be low the refe rence value
programmed into the control unit, the airbags
will not be triggered, even tho ugh t he car may be
badly damaged as a resu lt of the co llision . V ehi­
cle damage, repair costs or even the lack of vehi­
cle damage is not necessarily an indication of
whether an a irbag should inflate or not.
Since the circumstances wi ll vary considerab ly
between one co llision and another, it is not possi ­
ble to define a range of veh icle speeds that will
cover every poss ible kind and angle of impact
that w ill always trigger the airbags. Important
factors include, for example, the nature (hard or
soft) of the object which the ca r hits, the angle of
im pact, vehicle speed, etc. The front airbags will
..,.

a co .... N
" N .... 0 0 \.J ' also not inflate in side or rear co llisions, or in
ro llovers .
Always re memb er: Airbags will deploy only o nce,
and on ly in ce rtain k inds of coll is ions. Yo ur safety
be lts are always there to offer protection in those
situations in which airbags are not supposed to
deploy, or when they have already deployed; for
examp le, when your vehicle str ikes or is struck by
another vehicle after the first coll is ion.
This is just one of the reasons why an airbag is a
supp lementary restraint and is not a substitute
for a safety belt. The airbag system works most
effect ively when used with the safety belts.
Therefore, always properly wear your safety belts
<=:> page 134 .
A WARNING
Sitting too close to the steer ing whee l o r i n­
st rument panel w ill decrease the effe ct ive­
ness of the airbags and will inc rease the risk
of persona l injury in a co llision.
- Never si t close r than 10 inches (25 cm) to
the stee ring w heel or instr ument panel.
- If you cannot sit mo re than 10 inches
(25 cm) from the s teeri ng wheel, invest i­
gate whethe r adaptive equipment may be
availab le to he lp you reach the pedals and
increase your seating distance from the
steering wheel.
- All ve hicle occupants and especia lly children
must be restrained proper ly whenever riding
in a vehicle. An unrestrained or improperly
restra ined child could be injured by striking
the interior or by being ejected from the ve­
hicle during a sudden maneuver or impact.
An unrestra ined o r imp roperly restrained
c hild is also at greate r risk of inju ry o r death
t h rough contact with an inflating airbag.
- If you are unrestrained, lean ing fo rwa rd, s it­
ti ng s ideways or o ut of pos it ion in any way,
yo ur risk of i njury is m uch higher.
- Yo u will also receive se rious injur ies and
c ou ld eve n be killed if you are up aga inst the
air bag o r too close to it w hen it in flates -
even with an Advanced Airbag.
-
Airbag syste m
-To reduce the r is k of injury when an airbag
inf lates, always wear safety belts prope rly
r=;, page 137, Safety belts.
- Always make certain that children age 12 or
younge r always ride in the rear seat. If chil­
dren are not properly restrained, they may be severely injured or killed when an airbag
i n flates.
- Never let c hildren r ide unrestra ined or im­
properly restrained in the vehicle . Ad just the
front seats properly.
- Never ride w ith the backrest recl ined .
- Always sit as far as possible from the steer-
ing wheel or the instrument pane l
r=;, page 126.
-Always sit upright w ith your back against
the backrest of your seat .
- Never p lace your feet on the instrument
panel or on the seat. Always keep bot h feet
on the floor in front of t he seat to help pre­
vent ser ious injur ies to the legs and hips if
the airbag inflates.
- Never recl ine t he fron t passenger's seat to
transpo rt objects . Items can also move into
the area of the s ide airbag or the front air­
b ag d uring brak ing o r in a sudden ma neu ­
ve r. Obje cts near the a irbags can be come
p rojecti les and cause injury when an airbag
inf lates .
A WARNING ,..__ -
Airbags that have deployed in a cras h m ust be
replaced.
- Use on ly original eq uipment airbags ap ­
proved by A udi and insta lled by a trained
technician who has the necessary tools and
d iagnostic equipment to properly replace
any airbag in yo ur vehicle and assure system
effect iveness in a crash.
- Never permit salvaged or recycled airbags to
be installed in you r vehicle.
Child restraints on the front seat - some
important things to know
.. Be s ure to read the impo rtant info rmat io n and
heed the WARN INGS for important deta ils
143

Airbag system
-An improperly installed child restraint can
interfere with the airbag as it deploys and
seriously injure or even kill the child
-even
with an Advanced Airbag System .
-Always carefully follow the manufacture r's
instructions provided with the child seat or
carrier .
-Always make sure that there is nothing on
the front passenger seat that will cause the
capacit ive passenger detection system in
the seat to signal to the Airbag System that
the seat is occupied by a person when it is
not, or to signa l that it is occupied by some­
one who is heav ier than the person actually
sitting on the seat. The presence of addi­
tional objects could cause the passenger
front airbag to be turned on when it should be off, or could cause the airbag to work in a
way that is different from the way it would
have worked without the object on the seat .
Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat occu­
pants.
Fig. 151 L ocation of d river airbag : in stee ring w heel
146
Fig. 152 Locat io n of fro nt passenge r's airbag : in th e in ·
s trumen t pan el
Your vehicle is equipped with an "Advanced Air­
bag System" in compliance with United States
Federal Motor Vehicle Safety Standard
(FMVSS) 208, as well as Canada Motor Vehicle
Safety Standard (CMVSS) 208 as applicable at
the time your vehicle was manufactured .
The airbag for the driver is in the steering wheel
hub
q fig. 151 and the airbag for the front pas­
senger is in the instrument panel
q fig. 152 . The
general location of the airbags is marked
"AIR·
BAG".
There is a lot you need to know about the airbags
in your vehicle . We urge you to read the detailed
information about airbags, safety belts and child
safety in this and the other chapters that make
up the owner's literature. Please be sure to heed
the WARNINGS
-they are extremely important
for your safety and the safety of your passengers,
especially infants and small children.
A WARNING
-Never rely on airbags alone for protection.
-Even when they deploy, airbags provide only
supplemental protection.
- Airbag work most effectively when used
with properly worn safety belts.
- Therefore, always wear your safety belts and
make sure that everybody in your veh icle is
properly restrained.
- Always hold the steering wheel with both
hands on the outside of the steering wheel
rim at the 9:00 o'clock and 3:00 o'clock po·
sitions to help reduce the risk of personal in-
jury
if the dr iver's airbag inflates. ~

a co .... N
" N .... 0 0 \,;J ' -Never hold the steering wheel at the 12
o'clock position or with your hands any­
where inside the steering wheel or on the steering wheel hub . Holding the steering
wheel the wrong way increases the risk of severe injury to the arms, hands, and head if
the driver airbag deploys.
A WARNING
Objects between you and the airbag will in­
crease the risk of injury in a crash by interfer­
ing with the way the airbag unfolds and/or by
being pushed into you as the airbag inflates.
- Always make sure nothing is in the front air-
bag deployment zone that could be struck
by the airbag when it inflates.
-
- Objects in the zone of a deploying airbag
can become projectiles when the airbag de­
ploys and cause serious personal injury.
- Never hold things in your hands or on your
lap when the vehicle is in use.
- Never place accessories or other objects
(such as cup holders, telephone brackets,
note pads, navigation systems, or things
that are large, heavy, or bulky) on the doors;
never attach then to the doors or the wind­
shield; never place them over or near or at­
tach them to the area marked
,,AIRBAG" on
the steering wheel, instrument panel or the seat backrests; never place them between
these areas and you or any other person in
the vehicle.
- Never attach objects to the windshield
above the passenger front airbag, such as
accessory GPS navigation units or music
players. Such objects could cause serious in­
jury in a collision, especially when the air­ bags inflate.
- Never recline the front passenger seat to
transport objects. Items can also move into
the deployment area of the side airbags or
the front airbag during breaking or in a sud­ den maneuver. Objects near the airbags can
fly dangerously through the passenger com­ partment and cause injury, particularly
when the seat is reclined and the airbags in­
flate.
Airbag system
A WARNING
r--
A person on the front passenger seat, espe-
cially infants and small children, will receive
serious injuries and can even be killed by be­ ing 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 un­
der these special 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 for 3-
and 6-year-old children under the U.S. Fed­
eral Standard if a child with electrical capac­ itance greater than the combined capaci­
tance of a typical one-year old infant re­
strained in one of the forward facing or rear­
ward-facing child seats with which your ve­ hicle was certified is on the front passenger
seat and the other conditions for airbag de-
ployment 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 vehicle is equipped with a front Advanced
Airbag System in compliance with United States Federal Motor Vehicle Safety Standard 208, as
well as Canada Motor Vehicle Safety Standard (CMVSS) 208 as applicable at the time your vehi­
cle was manufactured.
The front Advanced Airbag System supplements
the safety belts to provide additional protection
for the driver's and front passenger's heads and
upper bodies in frontal crashes . The airbags in­
flate only in frontal impacts when the vehicle de-
celeration is high enough.
.,.
147

Airbag syste m
The front Advanced Airbag System for the front
seat occupants is not a substitute for your safety
be lts. Rather, it is part of the overa ll occupant re­
stra int system in your vehicle. Always remember
that the airbag system can on ly help to protect
you, if you are sitting upr ight, wearing your safe ­
ty belt and wearing it properly . This is why you
and your passengers must always be properly re­
stra ined, not just because the law requ ires you to
be.
The Advanced Airbag System in your veh icle has
been cert ified to meet the " low r isk" requ ire­
ments for 3 and 6 yea r-o ld children o n the pas­
senge r side and very sma ll adul ts on the d river
side . The low r isk dep loymen t cr iteria are intend ­
ed to he lp reduce t he risk of injury through inter­
action with the front airbag that can occur, for
examp le, by being too close to the steering wheel
and instrument panel when the airbag inflates .
I n addition, the system has been certified to
comp ly with the "suppression" requirements of
the Safety Standard, to turn off the front airbag
for infants 12 months old and younger who are
restrained on the front passenger seat in ch ild re­
stra ints that are listed in the Standard
c::> page 168, Child restraints and Advanced front
airbag system.
"Suppression" requ ires the front a irbag on the
passenger side to be turned off if:
- a chi ld up to about one year of age is restra ined
on the front passenger seat in one of the rear­
facing or forward-facing infant restraints listed
in Federal Motor Vehicle Safety Standard 208
with wh ich the Advanced Airbag System in your
vehicle was ce rt ified . For a listing of the ch ild
r estra ints tha t were used to certify your veh i­
cle's compl ian ce with the US Safety Standard
c::> page 168,
-When a person is detected on the fron t passen ­
ger seat th at has an electr ica l capacitance t hat
is mo re than the tota l electrical capac itance of
a chi ld that is about 1 year old restrained in one
of the rear -facing or forward-facing infant re­
straints (listed in Federal Motor Vehicle Safety Standard 208 with w hich the Advanced A irbag
System in your veh icle was certified) , the front
148
airbag on the passenger side may or may not
dep loy.
The
PASSENGER AIR BAG OFF lig ht comes o n
whe n the ele ct ronic control unit detec ts a t otal
e lectrica l capacitance on the front passenger seat
that requires the front airbag to be turned off. If
t h e
PASSENGER AIR BAG OFF light does not
come on, the front airbag on the passenger side
has not been turned off by the contro l unit and
can deploy if the contro l unit senses an impact
that meets the cond itions stored in its memory .
If the total e lectr ica l capacitance registered on
the front passenger seat is more than that of a
typ ica l 1 year-old, but less than the weight of a
small adult, the front a irbag on the passenger
s ide may deploy (the
PASSENGER AIR BAG OFF
li ght does not come on).
For e xample, th e airb ag may deploy if :
- a small ch ild that is heav ier than a typica l 1
year-old child is on the front passenger seat (regard less of whether the child is i n one of the
child seats listed
c::> page 168),
-a child who has outgrown c hild restraints is on
the front passenger seat .
If the front passenger airbag is turned off, the
PAS SENGER AIR BAG O FF light in the center of
the instrument panel will come on and stay on.
If the front passenger airbag dep loys, the Feder ­
al Standard requires the airbag to meet the "low
risk" dep loyment criteria to help reduce the r isk
of injury t hrough interaction with the airbag.
"Low risk" deployment occurs in those crashes
that take p lace at lower decelerations as defined
i n the elect ronic co ntrol unit
c::> page 154 .
Always remember : Even though your vehicle is
equipped with Advanced Airbags, the safest place
for ch ildre n is properly restra ined on the back
seat. Please be su re to read the impo rtant info r­
mation in the sect ions that fo llow and be sure to
heed all of the WARNINGS.
_&. WARNING
T o redu ce the r is k of injury when an air ba g i n-
flates, always wear safety be lts prope rly.
II)>

Airbag syste m
Airbag System for the front passenger seat from
doing its job in a crash.
The front Advanced Airbag S ystem con sists
of the follo wing :
-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 information received from
the crash sensors . The control unit also "de ­
c ides" whether the safety belt pretens ioners
shou ld be activated .
- An Advanced Airbag with gas generator and
contro l valve for the driver ins ide the steer ing
whee l hub.
- An Advanced Airbag with gas generator and
contro l valve inside the instrument pane l for
the front passenger.
- A capacitive passenger detect io n system under­
neath t he front passenger seat cover. This sys­
tem measures the elect rical capac ita nce of the
person in the seat. The info rm ation registe red
is sent continuous ly to the e lectronic control
unit to regulate deployment of the front Ad ­
vanced Airbag on the passenger side .
- An airbag monitoring system and indicator
light in the instrument cluster
Q page 154 .
-A sensor in each front seat registers the dis ­
tance between the respective seat and the
steering wheel or instrument pane l. The infor ­
mation reg istered is sent continuously to the
electronic control un it to regulate deployment
of the front Advanced Airbags .
- The
PASS ENGER AIR BA G OFF light comes on
and stays on in the center of the instrument
panel
Q page 154, fig . 154 and tells you when
the front Advanced A irbag on the passenger
s ide has been turned off .
- A sensor in the safety belt latch for the driver
and for the front seat passenge r that senses
whethe r th at safety belt is latched or not and
t ransm its this info rmat ion to the electronic
contro l unit.
150
_&. WARNING
Damage to the front passenger seat can pre­
vent the front airbag from work ing properly.
- Improper repair or disassembly of the front
passenger and driver seat will prevent the
Advanced A irbag System from function ing
properly.
- Repairs to the front passenger seat must be
performed by qualified and properly trained
wo rkshop personne l.
- Never remove the front passenger or driver seat from the vehicle .
- Never remove the upholstery from the front
passenger seat.
- Never d isassemble or remove parts from the
seat or disconnect wires from it.
- Never carry sharp objects in your pockets or
put them on the seat. The capacit ive pas­
senger detect ion mat in the front passenger
seat will not function p roperly if it is punc­
tured.
- Never carry things on your lap or carry ob­
jects on the front passenger seat. Such ob­
jects can influence the capacitance regis­
tered by the capaci tive passenger detection
system, so that incorrect in format ion is pro­
vided to the airbag control unit.
- Never store i tems under the front passenger
seat. Parts of the Advanced Airbag System
under the passenger seat could be dam­
aged, p reventing them and the airbag sys­
tem from working p roper ly.
- Never p lace seat covers or replacement up­
holstery that have not been specifically ap­
proved by Audi on the front seats.
- Seat covers can prevent the Advanced Air­
bag System from recognizing child re­
straints or occupants on the front passenger
seat and prevent the side airbag in the seat
backrest from deploying properly.
- If a seat heater has been retrofitted or oth­
erwise added to the front passenger seat,
never install any child res tra int system on
this seat.
- Never use cushions, p illows, blankets, or
sim ila r items on the front passenge r seat.
The additional laye rs prevent the capac it ive

a co .... N
" N .... 0 0 \,;J ' A WARNING
A child in a rearward-facing child seat instal­
led on the front passenger seat will be seri ­
ously injured and can be killed if the front air­
bag 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
PASSEN­
GER AIR BAG OFF
light does not come on
and stay on, immediately install the rear­
facing child seat in a rear seating position and have the airbag system inspected by
your Audi dealer.
A WARNING
Objects between you and the airbag will in­
crease the risk of injury in a crash by interfer­
ing with the way the airbag unfolds or by be­
ing 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 dur­
ing 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, instru­
ment panel, seat backrests or between
those areas and yourself. These objects could cause injury in a crash, especially
when the airbags inflate .
- Never recline the front passenger 's seat to
transport objects. Items can also move into
the area of the side airbag or the front air-
-
Airbag system
bag during braking or in a sudden maneu­
ver. Objects near the airbags can become projectiles and cause injury, particularly
when the seat is reclined .
- Never place or transport objects on the
front passenger seat. Objects on the front passenger seat could cause the capacitive
sensor in the seat to signal to airbag system
that the seat is occupied by a person when it
in fact is not, or that the person on the seat
is heavier than he or she actually is. The
change in electric capacitance because of
such objects can cause the passenger front
airbag to be turned on when it should be
off, or can cause the airbag to work in a way
that is different from the way it would have
worked without objects on the seat.
- Always make sure that there is nothing on the front passenger seat that will cause the
capacitive passenger detection system in
the seat to signal to the Airbag System that
the seat is occupied by a person when it is not , or to signal that it is occupied by some­
one who is heavier than the person actually
sitting on the seat. The presence of an ob­
ject could cause the passenger front airbag to be turned on when it should be off, or
could cause the airbag to work in a way that is different from the way it would have
worked without the object on the seat.
A WARNING ...__ -
The fine dust created when airbags deploy can
cause breathing problems for people with a history of asthma or other breathing condi­
tions .
- To reduce the risk of breathing problems,
those with asthma or other respiratory con­
ditions should get fresh air right away by
getting out of the vehicle or opening win­
dows or doors.
- If you are in a collision in which airbags de­
ploy, wash 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.
153

a co .... N
" N .... 0 0 \,;J ' -If, in exceptional circumstances, you must
install a forward-facing child restraint on
the front passenger seat, always move the
seat into its rearmost position in the seat's
fore and aft adjustment 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.
A 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
Audi dealer before transporting anyone on
the front passenger seat .
(D Tips
If the capacitive passenger detection system
determines that the front passenger seat is
empty, the frontal 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 are installed at many
different places on your Audi . Installing , remov­
ing , servicing or repairing a part in an area of the
vehicle can damage a part of an airbag system
and prevent that system from working properly
in a collision.
There are some important things you have to
know to make sure that the effectiveness of the
system will not be impaired and that discarded
components do not cause injury or pollute the
environment.
A WARNING
Improper care, servicing and repair proce­
dures can increase the risk of personal injury
and death by preventing an airbag from de-
-
Airbag system
ploying when needed or deploying an airbag
unexpectedly :
- Never cover, obstruct, or change the steer­
ing wheel horn pad or airbag cover or the in­
strument panel or modify them in any way.
- Never attach any objects such as cup holders
or telephone mountings to the surfaces cov­
ering the airbag units.
- For cleaning the horn pad or instrument
panel, use only a soft, dry cloth or one mois­
tened with plain water . Solvents or cleaners
could damage the airbag cover or change
the stiffness or strength of the material so
that the airbag cannot deploy and protect properly.
- Never repair, adjust, or change any parts of
the airbag system.
-All work on the steering wheel, instrument
panel, front seats or electrical system (in­
cluding the installation of audio equipment,
cellular telephones and CB radios, etc.)
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 au­
thorized Audi dealer or qualified workshop.
- Never modify the front bumper or parts of
the vehicle body.
- Always make sure that the side airbag can inflate without interference:
- Never install seat 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 in­
flate.
- 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 system can deploy only once. Af­
ter an airbag has been deployed, it must be
replaced with new replacement parts de­
signed and approved especially for your
Audi model version. Replacement of com­ plete airbag systems or airbag components
157

Airbag system
must be performed by qualified workshops
only. Make sure that any airbag service ac­
tion is entered in your Audi Warranty
&
Maintenance booklet under AIRBAG RE·
PLACEMENT RECORD .
-For safety reasons in severe accidents, the
alternator and starter are separated from
the vehicle battery with a pyrotechn ic circuit
interrupter.
- Work on the pyrotechnic circuit interrupt­
er must only be performed by a qualified
technicians who have the experience, in­
formation and special tools necessary to
perform the work safely.
- If the vehicle or the circuit interrupter is
scrapped, all applicable safety precautions
must be followed .
@ For the sake of the environment
Undeployed airbag modules and pretension­
ers might be classified as Perchlorate Materi­
al
-special handling may apply , see
www .dtsc.ca.gov/hazardouswaste/perchlo ­
rate . When the vehicle or parts of the re­
straint system including airbag modules and
safety belts w ith pretensioners are scrapped,
all applicable laws and regulations must be
observed . Your authorized Audi dealer is fa­
miliar with these requirements and we recom­
mend that you have your dealer perform this
service for you.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced Airbag System
performs in a crash. For example, using tire-rim
comb inations not approved by Audi, lower ing the
vehicle, chang ing the stiffness of the suspension,
including the springs, suspension struts , shock
absorb ers etc . can change the forces that are
measured by the airbag sensors and sent to the
electronic control unit . Some suspension changes
can, for example, increase the force levels meas­
ured by the sensors and make the airbag system
deploy in crashes in which it would not deploy if
the changes had not been made. Other kinds of
158
changes may reduce the force levels measured by
the sensors and prevent the airbag from deploy­
i ng when it should .
& WARNING
Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance and in­
crease the risk of serious personal injury in a
crash .
- Never install suspension components that do not have the same performance charac­
teristics as the components origina lly instal­
led on your vehicle.
- Never use tire-rim combinations that have
not been approved by Aud i.
Knee airbags
Description of knee airbags
Applies to: vehicles with knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants.
Fig . 155 Driver 's knee airbag
The driver knee airbag is in the instrument panel
underneath the steering wheel ¢
fig. 155, the
airbag for the passenger is at about the same height in the instrument panel underneath the
glove compartment.
The knee airbag offers add itional protect ion to
the driver's and passenger's knees and upper and lower thigh areas and supplements the protec­
tion prov ided by the safety belts .
If the front airbags deploy, the knee airbags also
deploy in frontal coll is ions when the deployment
..,.

Airbag system
Although they are not a soft pillow, they can
"cushion" the impact and in this way they can
he lp to reduce the risk of injury to the lower ex­
tremities .
All of this takes place in the blink of an eye, so
fast that many people don't even realize that the
airbags have deployed. The a irbags also inflate
with a great deal of force and it is important for
occupant safety that nothing should be in their
way when they deploy .
Fully inflated airbags in comb ination with proper­
ly worn safety belts slow down and limit the oc­
cupant's forward movement and help to reduce
the risk of injury.
Important safety instructions on the knee
airbag system
App lies to : ve hicles with knee a irbags
Airbags are only supplemental restraints . Always
wear safety belts correctly and ride in a proper
seating position.
There is a lot that you and your passengers must
know and do to help the safety belts and airbags
to provide supplemental protection .
,&. WARNING
An inflating knee airbag can cause serious in ­
jury. Wearing safety belts incorrect ly and im­
proper seating positions increase the r isk of
serious personal injury and death whenever a
vehicle is being used.
- The knee airbag system cannot protect you
properly if you are seated too close to any of
the airbag locations. When adjusting their
seat positions, it is important that both the
driver and the front passenger keep their
upper bodies and knees at the following
min imum safe distances:
- at least 10 inches (25 cm) between the
chest and the steering wheel/instrument panel.
- at least 4 inches (10 cm) between the
knees and the lower part of the instru­
ment panel.
- The risk of personal injury increases if you
lean forward or to the s ide, or if the seat is
160
improperly positioned and you are not wear­
ing your safety belt. The risk increases even
more should the airbag deploy.
- Always make sure that the knee airbag can
inflate without interference. Objects be­
tween you and the airbag can increase the
risk of injury in an accident by interfering
w ith the way the airbag deploys or by being
pushed into you as the airbag deploys.
- Never let anybody, especia lly children or
animals ride in the footwell in front of the
passenger seat. If the airbag deploys, this
can result in serious or fatal injuries .
- Never carry objects of any kind in the foot­
well area in front of the driver's or pas­ senger's seat. Bulky objects (shopp ing
bags, for example) can interfere with or
prevent proper deployment of the a irbag.
Small objects
can be thrown through the
vehicle if the airbag deploys and injure you
or your passengers.
- Make sure there are no crac ks, deep scratch­
es or other damage in the area of the i nst ru­
ment panel where the knee airbags are lo­
cated .
- If children are incorrec tly seated, their risk
of injury increases in a coll is io n
~ page 166, Child safety.
Side airbags
Description of side airbags
The airbag system can provide supplemental
protection to properly restrained occupants .
Fig. 157 Side a irbag locatio n in the driver 's seat