Airbag system
Monitoring the
Advanced Airbag System
:~ (USA models) /!f (Canada models)
Airbag monitoring indicator light
Two separate indicators monitor the function of
the Advanced Airbag System : the airbag moni
toring indicator light and the
PASSENGER AIR
BAG OFF
ligh t.
The Advanced Airbag System as well as the side
airbags and side curtain airbags with eject ion
mitigation features (including the e lectroni c con
trol unit, sensors and system wiring) are all
monitored continuously to make sure that they
are funct ion ing prope rly whenever the ignition is
on . Every time you turn on the ignition, the air
bag system indicator light
II (USA models) 1fll
(Canada models) will come on for a few seconds
(function check).
The system must be inspected when the
indicator light
II (USA models) tfll
(Canada models):
-does not come on w hen the ignition is switched
on,
-does not go out a few seconds after you have
switched on the ign ition, or
-comes on wh ile driving .
If an airbag system ma lf u nction is detected, the
ind icator light wi ll come on to serve as a constant
reminder to have the system inspected immedi
ately.
If a malfunction occurs that turns the front air
bag on the passenger side off, the
PASSENGER
AIR BAG OFF
light will come on and stay on
whenever the igni tion is on .
A WARNING
An airbag system that is not funct ioning prop
erly cannot provide supplemental protection
in a frontal crash .
-If the airbag indicato r light ¢page 16
comes when the vehicle is being used, have
the system inspected immediate ly by your
authorized Audi dealer . It is possible that
154
the airbag will inflate when it is not sup
posed to, or will not inflate when it should.
PASSENGER AIR BAG OFF light
Fig. 154 Sect io n fro m t he inst rume nt panel: PASSENGER
AIR BAG O FF lig ht
The PASSENGER AIR BAG OFF light is located in
the center of the instrument panel ¢
fig. 154.
The PASSENGER AIR BAG OFF light will come on
and stay on to tell you when the front Advanced
Airbag on the passenger side has been turned off
by the electronic contro l unit . If the bulb for the
PASSENGER AIR BAG OFF light burns out, the
airbag indicator light
II (USA models) a (Can
ada models) will come on to signal a malfunction
i n the Advanced A irbag System. Although the
burned-out bulb will not change the way the
front passenger's frontal airbag works, it wi ll no
l onger be poss ible to use the
PASSENGER AIR
BAG OFF
lig ht to make sure that the a irbag on/
off status is correct for the occupant on the front
passenger seat . Have the airbag system inspect
ed immediately by your author ized Audi dealer .
The PASSENGER AIR BAG OFF light will blink
for about 5 seconds when:
-the ignition is switched on and
- the capacit ive passenger detection system,
which switches the front seat passenger's fron
tal Advanced Airbag on and off, detects a
change in the status of the front passenger
seat.
As soon as the
PASSENGER AIR BAG OFF light
stops blinking, always make sure that the airbag
status (on or off) as shown by the
PASSENGER
AIR BAG OFF
light is proper for the age, size and
electrical capacitance of the person occupying
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the safety belt for the front passenger seat is
properly fastened .
The PASSENGER AIR BAG OFF light will show
the status of the front seat passenger's frontal
Advanced Airbag a few seconds after the igni
tion is switched on and the airbag indicator
light goes off. The PASSENGER AIR BAG OFF
light:
- wi ll stay on if the front passenger seat is not
occupied;
- wi ll stay on if the electrical capacitance meas
ured by the capacitive passenger detection sys
tem for the front passenger seat equals the
combined capacitance of an infant up to about
one year of age and one of the rearward-facing
or forward-facing ch ild restraints listed in Fed
eral Motor Vehicle Safety Standard 208 w ith
wh ich the Advanced Airbag System in your veh i
cle was certified; Fo r a listing of the child re
straints that were used to certify your vehicle 's
compliance with the U.S. Safety Standard
¢page 168.
-will go out if the front passenger seat is occu
pied by an adult as registered by th e capacitive
passenger detection system.
- T he
PASSENGER AIR BAG OFF light must come
on and stay on if the ignition is on and ...
- a car bed has been insta lled on the front pas
senger seat, or
- a rearward -facing child rest raint has been in
sta lled on t he front passenger seat, or
- a fo rwa rd -facing child restra int has bee n in stal
l ed on the front passenger seat,
- and if the e lectr ical capacitance reg istered on
the front passenger seat is eq ual to or less th an
the combined capacitance of a typica l 1 year
o ld infant and one of the rearward-facing or
forward-facing chi ld restraints listed in Federal
Motor Vehicle Safety Standard 208 with which
the Advanced Airbag System in your vehicle was certified.
If the front passenger seat is not occupied, the
front airbag wi ll not dep loy, and the
PASSENGER
AIR BAG OFF
light will stay on. Never install a
rearward-fac ing c hild restraint on the front pas
senger seat, the safest place for a child in any
Airbag system
kind of child restraint is at one of the seating po
sitions on the rear
seat ¢ page 143, Child re
straints on the front seat -some important
things to know
and ¢ page 166, Child safety.
If the PASSENGER AIR BAG light comes
on ...
If the PASSENGER AIR BAG OFF light comes on
when one of the conditions listed above is met,
be sure to check the light regularly to make cer
ta in that the
PASSENGER AIR BAG OFF light
stays on continuously whenever the ignition is
on . If the
PASSENGER AIR BAG OFF light does
not appear on and does not stay on all the time,
stop as soon as it is safe to do so and
- reactivate the system by turning the ignit ion
off for more than 4 seconds and then turning it
on again;
- remove and re install the ch ild restraint. Make
sure that the chi ld restraint is properly insta l
led and that the safety belt for the front pas
senge r seat has been correct ly routed through
the child restraint as described in the child re
straint manufacturer's instructions;
-ma ke sure that the convertible lock ing retrac
tor on the safety belt for the front passenger
seat has been activated and that the safety belt
has been pulled tight.
- make sure that no electrica l device (such as a
laptop, CD p layer, e lectronic games device,
power inverter or seat heater for chi ld seats) is
placed or used on the front passenger seat if
the device is connected to the 12-volt socket or
the cigarette lighter socket;
- make sure that no seat heater has been retro
fitted or otherw ise added to the front passen
ger seat;
- make sure that not hing can interfere with the
safety belt buckles and t hat they are not ob
structed;
- make sure that there are no wet objects (such
as a wet towel) and no water or other liquids on
the front passenger seat cushion .
.,.
155
Airbag syste m
If the PA SSENGE R AIR BAG light still do es
not c om e on ...
If the PASSENGER AIR B AG OFF light still does
not come on and does not stay on continuously
(when the ignition is switched on),
- take the child restraint off t he front passenger
seat and install it properly at one of the rear
seat positions. Have the airbag system inspect ed by your Audi dealer immediately .
- move the chi ld to a rear seat position and make
sure that the child is properly restra ined in a
child restraint that is appropriate for its size
and age .
The PASSENG ER AIR BAG light should NOT
come on ...
The PA SSENGER AIR B AG OFF light shou ld NOT
come on whe n the ignition is on and an adult is
sitt ing in a proper seating position on the front
passenger seat . If the
PASSENGER AIR BAG OFF
light comes on and stays on or flashes for about
S seconds wh ile d riving, under these circ umstan
ces, make s ure that:
- the adult on the front passenger seat is proper
ly seated on the center of the seat cushion with
his or her back up ag ainst the ba ckrest and the
ba ckrest is not re clined,
- the adu lt is not ta king weig ht off t he seat by
hold ing on to the passenger assist handle
above the front passenger door or s upporting
their weight on the armrest,
- the safety be lt is be ing p roperly wo rn and that
the re is not a lot of slack in the sa fety be lt web
bing,
- the re are no aftermarket seat covers or cush
ions or other things (such as blankets) on the
front passenger seat that might cause the ca
pacitive passenger detection system to miscal
cu late electrical capacitance.
Important safety instructions on
monitoring the Advanced Airbag System
A WARNING
- If the status of the Adv a need Airbag System
has changed while the vehicle is moving, the
PA SSENGER AIR BAG OFF light blinks for
156
about S seconds to catch the driver's atten
tion. If this happens, always stop as soon as it is safe to do so and check the steps descri
bed above .
- If the
PA SS EN GER AIR BAG OFF light does
not go off when an adult who is not very
small is sitting on the front passenger seat
after taking the steps described above, make sure the adu lt is properly seated and
restrained at one of the rear seating posi
tions. Have the a irbag system inspected by
your author ized Audi dealer befo re trans
porting anyone on the front passenger seat .
A WARNING
An airbag system that is not functioning prop
erly cannot provide supplemental protection in a fronta l crash.
- If the airbag indicator light ¢
page 16
comes when the vehicle is being used, have
the system inspected immediately by your
author ized Audi dealer.
It is possib le that
the airbag will inflate when it is not sup
posed to, or will not inflate when it should.
A WARNING
If the front a irbag inflates, a ch ild without a
chi ld restraint, or in a rea rwa rd-facing child
safety seat, or in a forward-fac ing ch ild re
stra int that has not been prope rly insta lled
will be ser iously injured and can be killed.
- Even tho ugh you r vehicle is equipped with
an Advanced A irbag System, make certain
that a ll children, espec ia lly 12 years and
younger, always ride on the back seat prop erly rest rained for thei r age and size.
-Always install forward or rear -facing child
seats on the rear seat -even with an Ad
vanced Airbag System.
- If you must install a rearward-facing child
seat on the front passenger seat because of
except ional circumstances and the
PA SSEN
GER AIR BAG OFF
light does not appear and
stay on, immediate ly install the rear-facing
child seat in a rear seat ing pos ition and have
the airbag system inspected by your Audi
dea le r.
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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
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threshold stored in the control unit is met
¢ page 152, More important things to know
about front airbags.
In addition to their normal safety function, safe
ty belts help keep the driver or front passenger in position in a frontal collision so that the airbags
can provide supplemental protection.
The airbag system is not a substitute for your safety belt. Rather, it is part of the overall occu
pant restraint system in your vehicle. Always re
member 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 134, Gener
al information.
Remember too, airbags will deploy only once and
only in certain kinds of accidents -your safety
belts are always there to offer protection in those
accidents in which airbags are not supposed to
deploy or when they have already deployed, for
example when your vehicle strikes or is struck by
another after the first collision.
This is just one of the reasons why an airbag is
not a substitute for the safety belt. The airbag
system works most effectively when used with
the safety belts. Therefore , always wear your
safety belts correctly.
It is important to remember that while the sup
plemental knee airbag system is designed to re
duce the likelihood of serious injuries, other inju
ries, for example, swelling, bruising and minor
abrasions and friction burns can also occur when
an airbag inflates.
The knee airbag system basically consists of:
- The electronic control module
- Two inflatable airbags (airbag and gas genera-
tor), one for the driver and one for the front
passenger
- The airbag indicator light in the instrument
panel
The knee airbag system will not deploy:
- when the ignition is switched off
Airbag system
- in frontal collisions when the deceleration
measured by the control unit is too low
- in side collisions
- in rear-end collisions
- in rollovers
- in the event of a system malfunction (warning/
indicator light is on)
¢ page 16 .
.&_ WARNING
-Safety belts and the airbag system can only
provide protection when occupants are in
the proper seating position
¢page 152.
- If the airbag indicator light ¢page 16
comes when the vehicle is being used, have
the system inspected immediately by your
authorized Audi dealer. It is possible that
the airbag will inflate when it is not sup
posed to, or will not inflate when it should.
How knee airbags work
App lies to: vehicles wi th knee airbags
The risk of injury to the leg area can be reduced
by fully inflated knee airbags.
Fig. 156 Inflated airbags protecting in a fro ntal coll is ion
The knee airbag system has been designed so
that the airbags for the driver and front passen
ger deploy in certain but not all frontal collisions .
If the front airbags deploy, the knee airbags also
deploy in frontal collisions when the deployment
threshold stored in the control unit is met .
When the system deploys, the airbags fill with a
propellant gas, and inflate between the lower
part of the instrument panel and the driver and
the lower part of the instrument panel and the
front
passenger ¢ page 152, fig. 153. .,.
159
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front seat backrests
c:!;>fig . 157 and the rear back
rest facing the doors . They are identified by the
word "AIRBAG".
The side airbags installed for the front seating
positions have been designed and certified to
he lp reduce the risk of injury that can be caused
by airbags when they inflate, particularly when
the occupant sitt ing next to it is not seated prop
erly. The s ide airbag for the front passenger seat
can be used with properly installed child re
stra ints. Please be sure to read the important in
formation and wa rnings whenever us ing a child
rest raint in a ve hicle: Safety belts
¢page 134,
Airbag system <:!;>page 142, Chi ld safety
¢page 166.
Th e s ide airbag system ba sically con sis ts of :
-the electron ic control module and externa l side
i mpact sensors
- the two airbags located in the sides of the front
backrests and the two airbags* located in the
rear back rest
- the a irbag warning light in the instrument cl us-
ter .
The airbag system is monitored electronically to make certain that it is functioning properly at all
times . Each time you switch on the ign ition, the
a irbag system indicator light will come on for a
few seconds (self diagnostics).
The s ide airbag system supp lements the safety
belts and can help to reduce the risk of in jury to
the dr iver's, front and rear passenger's upper tor
so on the side of the veh icle t hat is struck in a
side coll is io n. T he a irbag dep loys only i n side im
pacts and o nly when the veh icle accelerat ion reg
istered by the contro l un it is high enough. If this
rate is below the reference value programmed in
to the control unit, the side airbags wi ll not be
tr iggered, even though the car may be bad ly
damaged as a result of the collision. It is not pos
sib le to define an airbag tr igger ing range that
will cover every possib le ang le of impact, s ince
the c ircumsta nces will vary cons iderably between
one co llision and another. Important facto rs in
clude, for example, t he natu re (hard or soft) of
the impact ing object, t he a ngle of impact, vehicle
Airbag syste m
speed, etc. ¢ page 16 2, Important safety in
structions on the side airbag system .
Aside from the ir norm al safety funct ion, safety
belts work to help keep the dr iver o r front pas
senger in position in the event o f a side co llision
so that the side airbags can provide protection .
T he air bag system is
not a substitute fo r you r
sa fety be lt. Ra ther, i t is pa rt of the overall occ u
pant restraint system in your vehi cle. Always re
member that the side airbag system can only
help to protect you if you are wear ing you r safety
belt and wear ing it properly. This is another rea
son why you should a lways wear your safety
belts, not just because the law requires you to do
soc:!;> page 134, General information .
It is important to remember that while the sup
plementa l side airbag system is designed to re
duce the likelihood of ser ious injuries, other inju
ries, for example, swelling, bru is ing, friction
bur ns and m ino r abras ions can also be assoc iated
with deployed s ide airbags. Remember too, s ide
airbags will deploy only once and only in certa in
ki nds of accidents
-your safety belts are a lways
the re to offer protection .
Vehicle damage, repair costs o r even the lack of
vehicle damage a re not necessar ily an ind ic a tion
of over-sens it ive or fa iled air bag ac tiva tion . In
some collisions, both front and side airbags may
inflate. Remember too, that airbags wi ll dep loy
on ly once and only in certain kinds of collisions
-
your safety belts are always there to offer protec
t ion in those accidents in which airbags are not
supposed to deploy or when they have al ready
deployed .
The side airbag system will not deploy :
- when the ignition is switched off
- in side co llisions whe n the accele ration meas -
ured by the sensor is too low
- in front -end col lisions
- in rea r-end co llisions
- in rollovers.
In some types of accidents the front a irbags, side
curtain airbags and s ide a irbags may be tr iggered
togethe r.
..,
161
Airbag system
The s ide curtain airbag system supp lements the
safety belts and can he lp to reduce the risk of in
jury for occupants' heads and upper to rso . The
side curtain airbag inflates in s ide impacts and
only when the veh icle acce leration registered by
the co ntro l unit is h igh eno ugh . If this rate is be
low the refe re n ce value programmed in to the
con trol unit, the s ide curta in a irbag will no t be
tr iggered, even though the ca r may be bad ly
d a mage d as a r esult of the collis io n.
It is not pos
sib le to def ine an a irbag tr iggering range that
will cover every possib le ang le o f impact, since
the circumstances will vary considerably between
one co llision and another. Important factors in
clude, for example, the nature ( hard or soft) of
the impacting object , the angle of impact, vehicle
speed, etc.
¢ page 164, How side curtain air
bags work .
Aside from their normal safety function, safety
be lts work to help keep the driver or front pas
senger in pos it io n in the event of a collision so
that t he side curtai n airbags can provide protec
tion .
The a irbag system is not a substitute for your
safety belt . Rathe r, it is part of the overa ll occu
pant restrain t system i n your veh icle . Always re
membe r th at th e airbag system can only help to
p rotect yo u if you a re we aring your safety bel t
and wearing it pro perly . T hi s is anothe r reason
why you should always we ar your s afety belts,
not just because the law requires you to do so
¢ page 134, General information .
It is import ant to remember th at whi le t he s ide
curt ain ai rbag system is des igned to help reduce
the likelihoo d of serious injur ies, other injuries,
for example, swe lling, b ruising, friction burns
and minor abrasions can also be assoc iated with
these airbags upon deployment . Remember too,
these airbags will deploy only once and only in
certa in kinds of acc idents
-yo ur safety be lts are
a lways there to offer protec tion.
The side curtain a irbag system basically
consists of:
-Th e elect ronic control module and external s ide
im pact senso rs
164
-T he si de curta in ai rbags above t he front and
rear side wi ndows with ejection mitigat ion fea
tures
- The a irbag indicator lig ht in t he instr ume nt
pa nel
The airbag system is mo nitored e lectron ic all y to
make certain i t is func tioning pro perly at all
times . Each t ime yo u switch on the ignit ion, the
airba g system ind icator light will come on for a
few seconds (se lf diagnostics) .
The side curtain airbag is not activated:
-if the ignitio n is sw itched off,
-i n side co llisions whe n the acce le ra tion meas-
ured by the sensor is too low,
-in r ear-end co llisions .
.&_ WARNING
-Safety bel ts and th e air bag sys tem will only
provide pro te ct ion when occup ants a re in
t he prope r seat ing pos ition ¢
page 47,
Seats and storage.
-If the a irb ag ind ic ator light¢ page 1 6
comes w he n th e veh icle is being used, have
the system inspected immediately by your
authorized Audi dealer. It is possib le tha t
the airbag will inflate when it is not sup
posed to, or will not inflate w hen it should.
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 re
strained.
F ig. 1 60 Illustration of p rincip le: In fl ated s ide curta in air·
bags o n the le ft s ide
..,_