2008 AUDI TT ROADSTER ignition

& WARNING
To reduce the risk of injury when an airbag inflates, always wear
safety belts properly.
• If you are unrestrained , leaning forward , sitting sideways or out
of position in any way, your risk of injury is much higher.
• You will also receive serious injuries and could even be killed if
you are up against the airbag or too close to it when it inflates ·
even with an Advanced Airbag~
page 146. •
More important things to know about front
airbags
Fig . 132 Inflate d front
airbags
Safety belts are important to help keep front seat occupants in the
proper seated posit ion so that airbags can unfold properly and
provide supp lemental protection in a frontal collision.
The front airbags are designed to provide additional protection for
the chest and face of the driver and the front seat passenger when :
• safety belts are worn properly,
• the seats have been positioned so that the occupant is properly
seated as far as possible from the air bag,
• and the head restraints have been properly adjusted .
Safety first
Airbag system
Because airbags inflate in the blink of an eye with great force, things
you have on your lap or have placed on the seat could become
dangerous projectiles, and be pushed into you if the airbag inflates .
When an airbag deploys, fine dust is released . This is norma l and is
not caused by a fire in the vehicle. This dust is made up mostly of a
powder used to lubricate the airbags as they deploy. It could irritate
skin.
It is important to remember that while the supplemental airbag
system is designed to reduce the likel ihood of serious injuries, other
injuries, for example swelling, bruising and minor abrasions , can
also happen when airbags inflate. Airbags do not protect the arms
or the lower parts of the body. Front airbags only supplement the
three point safety be lts in some frontal collisions in which the
vehic le deceleration is high enough to dep loy the a irbags.
Front airbags will not deploy:
• if the ignition is switched off when a crash occurs,
• in side collisions,
• in rear -end collisions,
• in rollovers,
• when the crash deceleration measured by the airbag system is
less than the minimum threshold needed for airbag deployment as
registered by the electronic control unit.
The front passenger airbag will also not deploy:
• when the front passenger seat is not occupied,
• when the weight on the front passenger seat as sensed by the
Advanced Airbag System indicates that the front airbag on the
passenger side has to be turned off by the electronic control unit
(the
PASSENGER AIR BAG OFF light comes on and stays onl.
& WARNING
Sitting in the wrong position can increase the risk of serious injury
in cras hes. .,,_
Vehicle care
I I irechnical data

Monitoring the Advanced Airbag
System
Airbag monitoring indicator light t!
Two separate indicators monitor the function of the
Advanced Airbag System: the airbag monitoring indica tor
light and the
PASSENGER AIR BAG OFF light.
The Advanced Airbag System (including the e lectronic control unit ,
sensor circu its and system w iring) is monitored cont inuously to
make sure that it is functioning proper ly whenever the ignition is on.
Each time you turn on the ignition, the airbag monitoring in dicator
light
r~ will come on for a few seconds (self diagnostics) .
The sy stem mu st be in spe cted wh en the ind icat or
light ~:
• does not come on when the ignition is switched on ,
• does not go out a few seconds after you have switched on the
ignit ion , or
• comes on whi le driving.
I f an airbag system malfunction is detected, the indicator light will
f irst start flashing to catch the driver 's attention and then stay on
continuously to serve as a constant reminder to have the system
inspected immediately .
I f a malfunction occurs that turns the front airbag on the passenger
side off , the
PAS SEN GER AIR BAG OFF light will come on and stay on
whenever the igni tion is on .
& WARNING
An airbag system that is not fun ctioning properly cannot provide
s upplementa l p rotect ion in a front al cr ash.
• If the airbag ind icator light come s on , it mean s that ther e m ay
be something wr ong with the Adv anced Airb ag S ystem . It i s
Safety first
Airb ag sy ste m
& W ARNING !continued )
possible t hat the airbag will inflate when it is not suppo sed to , or
will not infl ate w hen it should.
• Have the airb ag sys tem in spe cted immedi ate ly b y your Aud i
de aler. •
PASSENGER AIR BAG OFF light
)
Fig . 133 S ection from
th e instrum ent pa nel:
PASS ENGER AIR BAG
OFF light
The PASSENGER AIR BAG OFF ligh t is located in the center of the
ins trumen t panel
~ fig . 133.
The
PASSENGER AIR BAG OFF l ight will come on and stay on to tel l
you when the front Advanced Airbag on the passenger side has
been turned off by the electronic control unit. Each time you turn on
the ignition, the
PA SSE NGER AIR BAG OF F light wi ll flash for a few
seconds and :
• will stay on if the fron t passenger seat is not occupied,
• will stay on if there is a small child or child restraint on the front
passenger seat,
• will go out if the front passenger seat is occupied by an adult as
registered by the weigh t-sensing mat .
The
PA SSENGER AIR BAG OFF light mu st come on and stay on if the
ign ition is on and ._
Vehicle care I I irechnical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
• a car bed has been installed on the front seat, or
• a rearward-facing child restraint has been installed on the front
passengerseat,or
• a forward-facing child restraint has been insta lled on the front
passenger seat, or
• the weight registered on the front passenger seat is equal to or
less than the combined weight of a typical 1 year -old restrained in
one of the rear-facing or forward-facing infant restraints listed in Federal Motor Vehicle Safety Standard 208 with which the Advanced
Airbag Sys tem in your vehicle was certified.
If the front passenger seat is not occupied, the front airbag wi ll not
deploy, and the
P ASS ENGER AIR B AG OFF light will stay on. Never
install a rearward -facing child restraint on the front passenger seat,
the safest place for a chi ld in any kind of child restraint is at one of
the seating positions on the rear seat=>
page 147, "Child restraints
on the front seat -some important things to know" and=>
page 168,
"Chi ld Safety" .
If the PA SS ENG ER A IR BAG OFF l ight com es on when one of the
conditions listed above is met, be sure to check the light regularly
to make certain that the
P ASSE NG ER AIR BAG OFF light stays on
continuously whenever the ignition is on. If the
PASSENGER AIR
B AG OFF
light does not appear and not stay on all the time, stop as
soon as it is safe to do so and
• reactivate the system by turning the ignition off and then turning
it on again;
• remove and re install the child restraint. Make sure that the chi ld
restraint is properly insta lled and that the safety belt for the front
passenger seat has been correct ly routed around the ch ild restraint
as described in the child restraint manufacturer's instructions;
• make sure that the convertible locking feature on the safety belt
for the front passenger seat has been activated and that the safety
belt has been pulled tight. The be lt must not be loose or have loops
of slack so that the sensor below the safety belt latch on the seat can
do its job=>
page 177 .
• make sure that things that may increase the weight of the child
and child safety seat are not being t ransported on the front
passenger seat;
• make sure that the safety belt tension sensor is no t blocked.
Shake the safety belt latch on the front passenger seat back and
forth;
• If a strap or tether is being used to tie the chi ld safety seat to the
front passenger seat, make sure that it is no t so tigh t that it causes
the weight -sensing mat to measure more weight than is actually on
t he seat .
If the PA SSEN GER AIR BAG OFF lig ht still doe s no t c om e on and does
not stay on continuously (when the ignition is switched on),
• t ake the child restraint off the front passenger seat and install it
proper ly at one of the rear seat positions. Have the airbag system
inspected by your Audi dealer immediately.
• move the child to a rear seat position and make sure that the
child is properly restrained in a child restra int that is appropriate for
its size and age .
T he
PASSENGER AIR BAG OFF light shou ld NOT come on when the
ignition is on and an adult is sitting in a proper seating position on
the front passenger seat . If the
PASSENGER AIR BAG O FF light
comes on and stays on or flashes for about 5 seconds wh ile driving,
under these circumstances, make sure that:
• the adu lt on the front passenger seat is properly seated on the
center of the seat cushion with his or her back up against the back­
rest and the backrest is not reclined=>
page 130, "Proper occupant
seating positions",
• t he adu lt is not taking weight off the seat by holding on to the
passenger assist handle above the front passenger door or
supporting their weight on the armrest,
• the safety belt is being proper ly worn and that there is not a lot
of slack in the safety belt webbing,
• accessory seat covers or cushions or other things that may cause
an incorrect reading or impress ion on the weight-sensing mat ...

__________________________________________________ A_ i_ r _b _a...; g::- s_ y=--- s_t _e _m __ lffl!III
under the upho lstery of the seat have been removed from th e front
p assenge r sea t,
• a safety belt extender has not been left in the safety be lt latch for
the fr ont pass enge r se at .
I n addition to the PASSENGER AIR BAG OFF l ight in the center of the
instrument pane l, the message PASSENGER AIR BAG OFF or
PASSENGER AIR BAG ON will br iefly appear in the instrument c luster
display . Thi s is to inform the drive r of the current front passenger
a ir b ag status .•
Important safety instructions on monitoring
the Advanced Airbag System
& WARNING
An airbag system that is not functioning prope rly cannot prov ide
supplemental protection in a frontal crash.
• If the airbag ind icator light comes on , it means that there may
be something wrong with the Advanced Airbag System . It is
possible that the airbag will inflate when it is not supposed to , or
will not inflate when it should.
• Have the airbag system inspected immediately by your Audi
dealer.
& WARNING
If the front airbag inflates , a child without a child restraint, in a
rearward-facing child safety se at or in a forward-facing child
restraint that has not been properly installed will be seriously
injured and can be killed.
• Even though your vehicle is equipped with an Advanced Airbag
System , make certain that all ch ildren , especially 12 years and
younger, always ride on the back seat properly restrained for their age and size .
Controls and equip­ ment Safety first
Vehicle operation
& WARNING (continued )
• If you must in stall a rearward-facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not appear and stay on ,
immediately install the rear -facing child safety seat in a rear
seating posit ion and have the airbag system inspected by your
Audi dealer .
• A tight tether or other strap on a rearward-fa cing child restraint
attached to the front passenger seat can put too much pressure
on the weight-sensing mat in the seat and reg ister more weight
than is actually on the seat. The heavier weight registered can make the system work as though an adult were on the seat and
deploy the Advanced Airbag when it must be suppressed causing
serious or even fatal injury to the child .
• If, in exceptional circumstances, you must in stall a forward ­
fac ing child restra int on the front passenger seat , always move the
seat into its rearmost position in the seat's fore and aft adjust ­
ment 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 .
& 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, have the airbag system inspected by your Audi
dealer before transporting anyone on the front passenger seat .
[ i ] Tips
I f the wei ght -sens ing mat in the front passenger seat detects an
empty seat, t he fron t airbag o n the pa ssenge r sid e wil l be tu rne d
o ff , and PASSENGER AIR BAG OFF will stay on .•
Vehicle care Do-it-yourself service Technical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
If the front airbags deploy, the knee airbags also deploy in frontal
collisions above a certain severity=:>
page 155, "More important
things to know about front airbags".
Besides their normal safety function, safety belts work to help keep
the driver or front passenger in position in case of a frontal collision
so that the airbags can provide protection.
The airbag system is not a substitute for your safety belt. Rather, it
is part of the overall occupant restraint system in your vehicle .
Always 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 137, "Gene ral notes" .
The safety belt buckle for the driver and front seat passenger have
switches that tell the airbag control module if the safety belt is
being used or not. If the safety belt is being used, the front airbag
will deploy at a slightly higher rate of deceleration than if the belt is
not being used. Therefore, in a particular collision, it is possible that
an airbag will not deploy at a seating position where the safety belt
is being used but will inflate at the position where the safety belt is
not being used .
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 supplemental 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 airbags . The knee airbag system basically consists of:
• The electronic control module
• Two inflatable airbags (airbag and gas generator), one for the
driver and one for the front passenger
• Th e airbag indicator light in the instrument panel
The knee airbag system will not deploy:
• when the ignition is turned off
• in front-end 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 illu­
minated) =:>
page 19.
&, WARNING
• Safety belts and the airbag system can only provide protection
when occupants are in the proper seating position=:>
page 155.
• If the airbag indicator light comes 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
acceleration in a side collision is high enough to deploy the airbag.
See also =:>
page 19. •

belts, not just because the law requires 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 airbag .s. Remember too, side
airbags wil l deploy only once and on ly in certain kinds of accidents
- your safety belts are a lways there to offer protection.
Vehicle damage, repair costs or even the lack of vehicle damage are not necessarily an indication of over -sensitive or failed airbag acti­
vation. In some collisions, both front and s ide airbags may inflate .
Remember too , that airbags will deploy only once and only in
certain kinds of collisions - 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 .
The s ide a ir ba g sy stem will not dep loy:
• when the ignition is turned off
• in side coll isions when the acce leration 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 and side airbags may
be triggered together.
& WARNING
• Safet y belt s a nd the airbag sy stem will only provid e prote ct ion
w hen o ccupants ar e in the proper s eating p osition
=> page 16 6.
• If the airbag indicat or light come s on when the vehicle i s being
u sed , have the system in sp ec ted imm ediatel y by your authori zed
Audi de aler . Th e airb ag m ay not work properly when the vehicle
a ccel era tion in a side c olli sio n is high enough to a ctiv ate th e
airb ag .•
Safety first
Airbag sy ste m
How supplemental s ide airbags work
Side airbags deploy instantly and can help reduce the risk
of upper torso injuries for occupants who are properly
restrained .
Fig. 137 Infl ate d side
airb ags on left sid e o f
ve hicle
When the system is triggered , the airbag is fi lled with propellant gas
and brea ks through a seam in the seat surface area marked
"AIRBAG" . It expands between the side trim pane l and the
passenger. In order to help provide this additional protection, the
s ide a irbag must inflate within a fraction of a second at very h igh
speed and with great force. The supp lemental side airbag could
injure you if your seat ing position is not proper or upright or if items
are located in the area where the supplemental side airbag expands.
This applies especially to children =>
page 168, "Child Safe ty" .
Supp lemental side airbags inflate between the occupant and the
door panel on the side of the vehicle that is struck in certain side
collision=> fig. 137.
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 deploys . This is normal
and does not mean there is a fire in the vehicle. •
Vehicle care I I Technical data

_____________________________________________ C_ h _ il_d _S_ a _ fe_t.....: y'----""
& WARNING
If , in e xceptional circum sta n ce s, y ou mu st in stall a forward -fa cing
c hild re straint on the front pa ssenger' s seat:
• Always m ake sure the forw ard-f acing se at has b een de signed
and cert ified by it s manufa cturer for use on a front seat with a
p ass eng er fro nt and side airbag .
• Alwa ys follow the manufacturer' s instruc tion s provided with
the child s afet y seat or carrier .
• Alway s move the p assenger sea t into it s rearmo st po sition in
the seat's fore and aft adjustme nt r ange , as far a way from the
airbag as po ssible before in stalling the child restraint. The ba ck­
rest must be adju sted to an upr ight p osition .
• Alway s m ake sure th at the PASSEN GER AIR BA G OFF l ight
c ome s on and stay s on all the time wheneve r the ignition is
s witched on. •
Advanced front airbag system and children
Your vehicle is equipped with a dual-stage front "Advanced Airbag
System" in comp liance with United States Federal Motor Vehicle
Safety Standard (F MVSS) 208 as applicab le at the t ime your vehic le
was manufactured .
The Advanced Airbag sys tem in yo ur vehicle has been cer tified to
meet the "low -risk" requirements for 3 and 6 year -old children on
the passenger side and small adults on the d river side. The low risk
deployment criteria are intended to reduce the risk of injury through
interaction with the airbag that can occur, for examp le, by being too
close to the steering wheel and instrument pane l when the airbag
inflates . In addition, the system has been certified to comp ly with
the "suppression" requirements of the Safety Standa rd, to turn off
the front airbag for infants up to 12 months who are restrained on
the front passenger sea t in child restraints that are listed in the
Standard .
Controls and equip­
ment Safety first Vehicle operation
Even though your vehicle is equipped with an Advanced Airbag
system, a child should always ride in theseat pr operly restrained for
its age and size. The airbag on the passenger side makes the front
seat a potentially dangerous place for a child to ride. The front seat
is not the safest place for a child in a forward -facing child safety
seat . It can be a very dangerous p lace for an infant or a larger child
in a rearward -facing seat. •
Advanced Airbags and the weight -sensing
mat in the front seat
The Advanced A irbag System in your vehicle detects the presence
of an infan t or child in a chi ld rest rain t on the front passenger seat
using the weight -sensing mat in the seat cushion and the sensor
below the safety belt latch on the front passenger seat that
measures the tension on the sa fety belt.
The weight -sensing mat measures total weight of the child and the
child safety seat and a chi ld blanke t on the front passenger seat . The
weight on the front passenger seat is related to the design of the
child res tra int a nd i ts "footprin t", the size and shape o f the b ottom
of the child restraint as it sits on the seat . T he weight of a child
restra in t and its " footprint" va ry for different kinds of ch ild
restraints and for the different models of the same kind of chi ld
restraint offered by child restraint manufacturers .
The weight ranges for the ind ividual types, makes and models of
child restraints that the NHTSA has specified in the Safety Standard
t ogether with the weight ranges of typical infan ts and typica l 1 year ­
old chi ld have been stored in the control unit of the Advanced
Airbag Sys tem. When a child res traint is being used on the front
passenger seat with a typical 1 year-old chi ld, the Advanced Airbag
System compares the weight measured by the we ight sensing ma t
with the information stored in the e lectronic control unit.
The electronic contro l unit also registers the tension on the front
passenger safe ty bel t. The tension on the safety be lt for the front
passenger seat will be different for an adult who is properly using •
Vehicle care Do-it-yourself service Technical data

Child Safety -
--------------------''---
& WARNING
To reduce the risk of serious injury, make sure that the PASSENGER
AIR BAG OFF light comes on and stays on whenever a child restraint is installed on the front passenger seat and the ignition
is switched on.
• Never install a rearward facing child safety seat on the front
passenger seat unless the PASSENGER AIR BAG OFF light comes
on and stays on. If the PASSENGER AIR BAG OFF light does not
come on and stay on the inflating airbag will hit the child safety
seat or infant carrier with great force and will smash the child
safety seat and child against the backrest, door or roof. Have the
airbag system inspected immediately by your Audi dealer.
[ i] Tips
The child seats listed in categories A to C have been tested by Audi
only for the Advanced Airbag 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 driver, you are responsible for the safety of every ­
body in the vehicle, especially children:
- Always use the right child safety seat for each child and
always use it properly ::::>
page 173.
-Always carefully follow the child safety seat manufac­
turer's instructions on how to route the safety belt prop­
erly through the child safety seat.
Controls and equip­ ment Safety first Vehicle operation
-
When using the vehicle safety belt to install a child safety
seat, you must first activate the convertible locking retractor on the safety belt to prevent the child safety
seat from moving ::::>
page 177.
-Push the child safety seat down with your full weight to
get the safety belt really tight so that the seat cannot
move forward or sideways more than one inch (2.5 cml.
Always remember: Even though your vehicle is equipped with an
Advanced Airbag system, a child should always ride in the seat
properly restrained for its age and size.
& WARNING
Not using a child safety seat, using the wrong child safety seat or
improperly installing a child restraint increases the risk of serious
personal injury and death.
• All vehicle occupants and especially children must always be
restrained properly whenever riding in a vehicle.
-An unrestrained or improperly restrained child can be injured
or killed by being thrown against the inside of the vehicle or by
being ejected from it during a sudden maneuver or impact.
- An unrestrained or improperly restrained child is at much
greater risk of injury or death by being struck by an inflating
airbag.
• Commercially available child safety seats are required to
comply with U.S. Federal Motor Vehicle Safety Standard (FMVSS)
213 (in Canada CMVSS 213).
- When buying a child restraint, select one that fits your child
and the vehicle.
- Only use child restraint systems that fully contact the flat
portion of the seat cushion. The child restraint must not tip or
lean to either side. Audi does not recommend using child safety
seats that rest on legs or tube-like frames. They do not provide
adequate contact with the seat. ..
Vehicle care Do-it-yourself service Technical data