
156 Airbag system
www.dtsc.ca.gov/hazardouswaste/per
chlorate. When the vehicle or parts of the
restraint system including airbag modules
and safety belts with pretensioners are
scrapped, all applicable laws and regula
tions must be observed. Your authorized
Audi dealer is familiar with these require
ments and we recommend 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 Sys
tem performs in a crash. For example, using
tire-rim combinations not approved by Audi,
lowering the vehicle, changing the stiffness of
the suspension, including the springs, suspen
sion struts, shock absorbers etc. can change
the forces that are measured by the airbag sensors and sent to the electronic control
unit. Some suspension changes can, for exam
ple, increase the force levels measured 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
changes may reduce the force levels meas ured by the sensors and prevent the airbag
from deploying when it should.
A WARNING
Changing the vehicle's suspension includ
ing use of unapproved tire-rim combina
tions can change Advanced Airbag per
formance and increase the risk of serious
personal injury in a crash.
- Never install suspension components
that do not have the same performance characteristics as the components origi
nally installed on your vehicle.
- Never use tire-rim combinations that
have not been approved by Audi.
Knee airbags
Description of knee airbags
Applies to vehicles: with knee airbags
The knee airbag system can provide supple
mental protection to properly restrained
front seat occupants .
Fig. 163 Driver 's knee airbag
The driver knee airbag is in the instrument
panel underneath the steering wheel
¢ fig. 163, the airbag for the passenger is at
about the same height in the instrument pan
el underneath the glove compartment.
The knee airbag offers additional protection
to the driver 's and passenger's knees and up
per and lower thigh areas and supplements
the protection provided by the safety belts.
If the front airbags deploy, the knee airbags
also dep loy in frontal collisions when the de
ployment threshold stored in the control unit
is met
<=> page 149, More important things to
know about front airbags .
In addition to their normal safety function,
safety belts help keep the driver or front pas
senger in position in a frontal collision so that
the airbags can provide supplemental protec
tion.
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 wearing
your safety belt and wearing it properly. This
is why you should always wear your safety
belt, not just because the law requires you to
do so
¢ page 130 , General notes. ..,.

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Remember too, airbags will deploy only once
and only in certain kinds of accidents -your
safety belts are a lways there to offer protec
tion in those acc idents in which airbags are
not supposed to deploy or when they have al
ready deployed, for example when your vehi
cle str ikes or is struck by another afte r the
fi rst coll is ion.
This is just one of the reasons why an a irbag is
not a substitute for the safety belt . The airbag
system wo rks most effectively when used with
the safety belts . Therefore, always wear your
safety bel ts correctly .
It is important to remember that while the
supplemental knee a irbag system is des igned
to reduce the like lihood of serious injur ies,
o ther in juries, fo r example, swel ling , bruising
and minor abras io ns and frict ion bu rns ca n al
so occur when an airbag in flates.
The knee airbag system basically consists
of :
-The elec tronic control mod ule
- T wo inf latab le airbags (airbag and gas gen-
erato r), one for the driver and one for the
front passenger
- T he airbag ind icator light in the instrument
pane l
The knee airbag system will not deploy:
-when the ign ition is switc hed off
- in frontal collisions w hen the decelerat ion
measured by the control unit is too low
- in s ide collisions
- in rear-end collisions
- in ro llovers
- in the event of a system malfunct io n (wa rn -
i ng/indicator ligh t is on)
r::!>page 18.
& WARNING
- Safety belts and the airbag system can
only p rov ide protection when occ upants
are in the proper seating posit ion
c::>page 149.
-If the airbag indicator light c::> page 18
comes when the vehicle is be ing used,
have the system inspected immediately
A irba g sy stem 15 7
by your authorized A udi dealer. It is pos
sib le that the airbag will inflate when it
is not supposed to , or will not inflate
when it should .
How knee airbags work
Applies to vehicles: with knee airbags
The risk of injury to the leg area can be re
duced by fully inflated knee airbags.
~ N 0 :..c---0
i::....---ali
Fi g. 164 In flated a irbags protect ing in a fronta l coll i·
s ion
The knee airbag system has been designed so
that the airbags for the driver and front pas
senger deploy in certain but not all frontal
collisions.
If the front airbags dep loy, the knee airbags
also dep loy in fronta l collisions when the de
ployment th resho ld stored in the control unit
is met.
When the system deploys, the ai rbags fill
with a propellant gas, and inflate between the l ower part of the instrument pane l and the
driver and t he lower part of the instrument
panel and the front passenger
c::> page 149,
fig . 161 .
Although they are not a soft pi llow, they can
"cushion" the impact and in t his way they can
help to reduce the risk of injury to the lower
extremit ies .
A ll of th is takes place in the blink o f an eye, so
fast that many people don't even realize that
the a irbags have deployed. The airbags a lso
i nfla te with a g reat dea l of fo rce and i t is im
po rtant for occupant safety t hat nothing
sho uld be in their way whe n they deploy. ..,.

158 Airbag system
Fully inflated airbags in combination w ith
properly worn safety belts slow down and lim
it the occupant's fo rward movement and help
to reduce the risk of injury.
Important safety instructions on the
knee airbag system
Applies to vehicles: with knee airbags
Airbags are only supplemen tal res traints. Al
ways 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
a irbags to provide supplemental protection .
A WARNING
An inflating knee airbag can cause serious
injury. Wearing safety belts incorrectly and
improper 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 ad
justing their seat positions, it is impor tant that both the driver and the front
passenger keep their upper bodies and
knees at the following minimum safe
distances:
- at least 10 inches (25 cm) between the
chest and the steering wheel/instru
ment panel.
- at least 4 inches (10 cm) between the
knees and the lower part of the instru
ment panel.
- T he risk of personal injury increases if
you lean forward or to the side, or if the
seat is improperly positioned and you are
not wearing your safety belt. The risk in
creases even more should the airbag de
ploy.
-Always make sure that the knee airbag
can inflate without interference. Objects
between you and the airbag can increase
the risk of injury in an accident by inter
fering with the way the airbag deploys or by being pushed
into you as the airbag
deploys .
- Never let anybody, especially children
o r anima ls ride in the footwell in front
of the passenger seat. If the airbag de
ploys, this can result in serious or fatal
injuries.
- Never carry objects of any kind in the
footwell area in front of the dr iver's or
passenger's seat. Bulky objects (shop
ping bags, for example) can interfere
with or prevent proper deployment of
the airbag. Small objects can be
thrown through the vehicle if the air bag deploys and injure you or your pas
sengers .
- Make sure there are no cracks, deep
scratches or other damage in the area of
the instrument panel where the knee air
bags are located.
- If ch ildren are incorrectly seated, their
risk of injury increases in a collision
~ page 165, Child Safety.
Side airbags
Description of side airbags
The airbag system can provide supplemental
protection to properly restrained occupants.
Fig. 165 Sid e air bag locat io n in the driver's seat
The side airbags are located in the sides of the
front seat backrests
¢ fig . 165 and the rear
backrest facing the doors. They are identified
by the word "AIRBAG".
The side airbags installed for the fron t seating
positions have been designed and certified to
help reduce the risk of injury that can be .,_

M N
0:: <.J 'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
caused by airbags when they inflate, particu
l arly when the occupant sitting next to it is
not seated properly. The s ide a irbag for the
front passenger seat can be used with proper ly installed chi ld restraints. Please be sure to
read the important information and warnings
whenever us ing a child restraint in a veh icle :
Safety belts
c::;, page 130, A irbag system
c::;, page 139, Child safety ~ page 165.
The side airbag system basically con sists of:
- the e lectronic control module and external
s ide impact sensors
- the two airbags located in the sides of the
front backrests and the two airbags* located
in the rear backrest
- the airbag warning light in the instrument
cluster.
The airbag system is monito red elect ron ica lly
to make certain that it is functioning properly
at all times. Each time you switch on the igni
tion, the airbag system indicator light will
come on for a few seconds (self diagnostics) .
T he side airbag system supplements the safe
ty belts and can help to reduce the risk of in
jury to the driver's, front and rear passenger's upper torso on t he side of the vehicle that is
struck in a side collision . The airbag deploys
only in s ide impac ts and on ly when the veh icle
acceleration registered by the control u nit is
hi gh enough . If this rate is below the refer
e nce va lue progr ammed i nto the con trol un it,
the side airbags will not be triggered, even
though the ca r may be badly damaged as a re
sult of the collision . It is not possible to de
f ine an a irbag trigger ing range that will cover
eve ry possible angle of impact, since the cir
cumstances will vary considerably between
one co llision and another . Important facto rs
in clude, for examp le, the natu re (hard o r soft)
of the impacting objec t, the ang le of impact ,
ve hicl e speed, etc. ~
page 1 60, Impor tan t
safety instructions on the side airbag sy stem.
Aside from the ir no rmal safety function, safe
ty belts wor k to he lp keep the d river or front
passenger in posi tion in the event of a side
Airbag system 159
collision so that the side airbags can provide
protection.
T he airbag system is
not a substi tute fo r your
s af ety belt . Ra ther, it is part o f the over all oc
cupant restra int system in you r vehicle . A l
ways remember that the side airbag system
can on ly help to protect yo u if you are wearing
your safety be lt and wearing it proper ly. This
is another reason why you should always wear
your safety be lts, not just because the law re
quires you to do so c::;,
page 130, General
notes.
It is important to remember that wh ile the
suppleme nta l side airbag system is desig ned
to r educe the likelihood of ser ious injuries,
othe r injur ies, for exampl e, swelling, bru is ing ,
friction bur ns and m ino r abrasions can a lso be
associ ated w ith dep loye d side airbags. Re
member too, si de a irbags w ill dep loy o nly
once an d only in ce rtain kinds of accidents -
yo ur safety be lts a re a lways there to offer p ro
tection .
Vehicle damage, repair costs o r even the lack
of ve hicle damage are not necessarily a n indi
cation of ove r-sensitive or failed airbag activa
tion. In some coll is ions, both front and side
a irbags may inflate. Remember too, that air
bags will deploy only once a nd only in certain
ki nds of col lisions - you r safety belts a re a l
ways t he re to offe r protection in those acc i
dents i n which a irbags are not supposed to
deploy or when they have a lready deployed .
The side airbag system will not deploy:
-when the ignit io n is switched off
- in side co llisions whe n the acceleration
meas ured by t he sensor is too low
- in front-end collisions
- in rear -end co llisions
- in rollove rs .
In some types of accidents the front airbags,
s ide cu rtain airbags and s ide a irbags may be
t rigge red together. .,,. •
•

160 Airbag system
& WARNING
-Safety belts and the airbag system will
only provide protection when occupants
are in the proper seating position
<=>pag e 160.
- If the airbag indicator light c::> page 18
comes when the vehicle is being used,
have the system inspected immediately
by your authorized Audi dealer. It is pos
sible that the airbag will inflate when it
is not supposed to, or will not inflate
when it should.
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. 166 Inflated side airbags o n left side of vehicle,
rear s ide airbag
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 additional 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
c::> page 165, Child Safe
ty.
Supplemental side airbags inflate be
tween the occupant and the door panel on th e
side of the vehicle that is struck in certain side
coll ision
c::> fig. 166 .
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 develop when the airbag de ploys. This is normal and does not mean there
is a fire in the vehicle.
Important safety instructions on the
side airbag system
Airbags ore only supplemental restraints. Al
ways properly wear safety bel ts and ride in a
proper seating position .
There is a lot that you and your passengers
must know and act accord ingly to help the
safety belts and airbags do their job to pro
vide supplementa l protection .
& WARNING
-An inflating side airbag can cause serious
or fatal injury . Improperly wearing safety
belts and improper seating positions in
crease the risk of serious personal injury
and death whenever a vehicle is being
used.
- In order to reduce the risk of injury when
the supplemental side airbag inflates:
- Always sit in an upright position and
never lean against the area where the
supplemental side airbag is located .
- Never let a child or anyone else rest
their head against the side trim panel in the area where the supplemental
side airbag inflates.
-Always make sure that safety belts are
worn correctly,
- Do not let anyone sitting in the front
seat put their hand or any other parts
of their body out of the window .
- Always make sure that the side airbag
can inflate without interference.
- Never install seat covers or replace
ment upholstery over the front seat
backs that have not been specifically
approved by Audi.

162 Airbag sys tem
The side curtain airbags are located on both
sides of the interior above the front and rear
side windows ~
fig. 167. They are ident ified
by the word "AIRBAG" on the windshie ld
frame and the center roof p illar.
The side curtain airbag system supp lements
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 co llision . The side curtain airbag in
flates in s ide impacts and only when the veh i
cle acce lerat ion reg istered by the contro l unit
is high enoug h. If th is rate is below the refe r
ence va lue programmed i nto the control un it,
the side curtain airbag wi ll not be triggered,
even though the car may be badly damaged as
a result of the collision . It is not possible to
define an airbag triggering range that will
cover every possible angle of impact, since the
circumstances will vary cons iderably between
one co llision and another. Important factors
i nclude, for example, the nature (hard or soft)
of the impacting object, the ang le of impact,
vehi cle speed, etc.
~ page 163, How side cur
tain airbags work.
As ide from the ir normal safety function, safe
ty belts work to he lp keep the driver or front
passenger in position in the event of a co lli
sion so that the side curta in airbags can pro
vide protection.
The airbag system is not a subst itute for you r
safety belt. Rathe r, it is pa rt of the overall oc
cupant res traint system in your ve hicle. Al
ways remember that the airbag system can
only help to protect you if you are wearing
your safety be lt and wearing it properly. This
is another reason why you sho uld always wear
your safety belts, not just because the law re
qu ires you to do so
Q page 130, General
notes.
It is important to remember that while the
side curta in a irbag system is designed to help
reduce the likelihood of serious injuries, other
injuries, for example, swell ing, bruisi ng, fric
tion burns and m ino r abrasions can also be as
sociated with these a irbags upon deployment.
Remembe r too, these airbags w ill dep loy only once and on
ly in certain kinds of accidents -
your safety belts are always there to offer pro
tection.
The side curtain a irbag system basically
con sists of :
-The e lectronic 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 panel
T he airbag system is mon itored e lectronically
to make ce rtain i t is func tioning prope rly at all
times . Each time you switch on the ignition,
the airbag system indicator light will come on
for a few seconds (self diagnostics).
The side curtain airbag i s not activated :
-if the ignition is sw itched off,
- in side co llisions when the acceleration
measured by the se nsor is too low,
- in rear-end col lisions.
_&. WARNING
- Safety belts and the airbag system will
only provide protection when occupants
are in the proper seating posi tion
¢ page 53, General recommendations.
- If the ai rbag ind icator light Q page 18
comes when the veh icle is being used,
have the system inspected immediately
by your authorized A udi dealer. It is pos
sible that the airbag will inflate when it
is not supposed to, or will not inflate
when it should.
.

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How side curtain airbags work
Side curtain airbags can work together with
side airbags to help reduce the risk of head
and upper torso injuries for occupants who
are properly restrained.
Fig. 168 Illustration of principle: In flated side cur ta in
airbags on the left side
The side curtain airbags inflate between the
occupant and the windows on the side of the
vehicle that is struck in a side collision
¢fig. 168 .
When the system is triggered, the side curtain
airbag is filled with propellant gas and breaks
through a seam above the front and rear side windows identified by the AIRBAG label. In or
der to help provide this additional protection,
the side curtain airbag must inflate within the
blink of an eye at very high speed and with
great force. The side curtain airbag could in
jure you if your seating position is not proper or upright or if items are located in the area
where the supplemental side curtain airbag
inflates . This applies especially to children
¢ page 165.
Although they are not a soft pillow, side cur
tain airbags can ''cushion" the impact and in
this way they can help to reduce the risk of in
jury to the head and the upper part of the
body.
A fine dust may develop when the airbag de ploys . This is quite normal and does not mean
there is a fire in the vehicle .
Airbag system 163
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 you and your passengers
must know and do to help the safety belts and
airbags do their job to provide supplemental
protection.
A WARNING
Improperly wearing safety belts and im
proper seating positions increase the risk
of serious personal injury and death when
ever a vehicle is being used.
- Never let occupants place any parts of
their bodies in the area from which the side curtain airbag inflate.
- Always make sure that the side curtain
airbags can inflate without interference.
- Use the bui lt-in coat hooks only for light
weight clothing. Never leave any heavy or sharp-edged objects in the pockets that
may interfere with airbag deployment
and can cause personal injury in a colli
sion .
- Never use hangers to hang clothes on the hooks .
- Only use factory-installed sun shades or,
if shades installed after the vehicle
leaves the factory, use only genuine Aud i
sun shades .
- Never swing the sun visors over to the
side windows if things such as pens , ga
rage door openers, hands-free speakers,
etc. are attached to the sun visors. They
could come loose and cause serious in
jury if the side curtain airbag inflates.
-A deploying airbag inflates in a fraction
of a second and with great force .
- Never attach objects to the cover or in
the deployment zone of a side curtain airbag.
- The airbag deployment zones must be
kept clear at all times . Make sure there
are no objects, pets, or other persons in
-

164 Airbag sys te m
the space between any vehicle occupant
and any airbag at any time.
- Do not attach any accessories to the
doors .
.&_ WARNING
- The airbag system can deploy only once.
If the airbag has been triggered, the sys
tem must be replaced by an author ized
Audi dealer or qualified workshop .
- Always have work involving the side cur
tain airbag system, removal and installa
tion of the a irbag components, o r other
repa irs perfo rmed by a qualified dealer
ship. Othe rwise the airbag system may
not wo rk cor rectly .
- Never a ttempt to modify any compo
nents of the airbag sys tem in any way.