2008 AUDI TT ROADSTER light

& WARNING !continue d)
• Torn or fr ayed safety b elt s can tear and damaged b elt hard ­
ware can bre ak in an ac cident. Inspect belt s regularly . If webb ing ,
bind ings , buckles , or retra ctors are d am aged , have belts repla ced
by an authori zed Audi dealer or qualified work shop.
• Safety belt s th at have been worn and lo aded in an accident
mu st be repl aced with the correc t replacement saf ety belt by an
autho riz ed Audi de aler o r qualified work shop . Repla cement may
be nece ssary even if d amage cannot b e clea rly seen. Anchorage s
that wer e loaded must also be inspe cted .
• Never rem ove, modif y, dis ass em ble , or tr y to r epa ir the safety
belts your self .
• Alway s keep the belt s cle an. Dirty belt s may not work properly
and can impair the fun ction of the inertia reel=>
page 212 , "Safety
belts ".•
Safety belts
Fastening safety belts
Seat first -everybody buckle up!
Safety first
Fig . 126 Belt bu ckle
a nd ton gue on th e
driv er's s eat
Safety b elts
To provid e ma ximum protec tion, sa fety belts m ust always
be pos itioned c orrect ly on the wear er's bod y.
- Adjust the front seat and head restraint properly
=> page 87, "General recommend atio ns".
- Hold the belt by the tongue and pull it evenly across the
c h es t and pelvis=> &.
- Inse rt the tongue into the correct buckle of your seat
unti l you hea r it latch securely => fig. 126 .
- Pull on t he b elt t o mak e sur e tha t it is se curely l atc hed in
t h e buckle .
Automatic safety belt retra cto rs
Every safety belt is equipped with an automatic be lt retractor on the
shoulder belt . This feature locks the belt when the belt is pulled out
f ast, during hard braking and in an accident. The be lt may a lso lock
when you drive up or down a steep hill or through a sharp curve.
During norma l d riving the belt lets you move free ly .
Safety be lt pretensioners
The safety belts are equipped with a be lt pretensioner that helps to
tighten the safety belt and remove slack when the pretensioner is
activated. T he funct io n of the pretensioner is mon itored by a
warning light =>
page 19, "Airbag system
t!! (USA models)/!,~ · (Canada models)".
Swit chable locking featur e
Every safety belt except the one on the driver seat is equipped with
a switchable locking feature that
must be used when the safety be lt
is used to attach a chi ld seat. Be sure to read the important info rma-
tion about this feature =>
page 177. ._
Vehicle care I I Technical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
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 place for an infant or a child in a rearward-facing seat.
The Advanced Airbag System in your vehicle has been certified to comply with the Requirements of United States Federal Motor
Vehicle Safety Standard 208 as applicable at the time your vehicle
was manufactured.
The Standard requires the front airbag on the passenger side to be
turned off ("suppressed") if a child up to about one year of age 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 System in your vehicle was certified has
been installed on the front passenger seat. For a listing of the child
restraints that were used to certify compliance with the US Safety
Standard =>
page 170.
The PASSENGER AIR BAG OFF light in the instrument panel tells 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
PASSENGER AIR BAG OFF
light will come on for a few seconds and:
• will stay on if the front passenger seat is not occupied,
• will stay on if there is a small child or child restraint on the front
passenger seat,
• will go off if the front passenger seat is occupied by an adult as
registered by the weight -sensing mat=>
page 157, "Monitoring the
Advanced Airbag System".
The
PASSENGER AIR BAG OFF light comes on when the control unit
detects a total weight on the front passenger seat that requires the
front airbag to be turned off.
If the total weight on the front passenger seat is more than that of
a typical 1 year-old child but less than the weight of a small adult,
the front airbag on the passenger side can deploy (the
PASSENGER
AIR BAG OFF
light does not come onl. If the PASSENGER AIR BAG OFF
light does not come on, the front airbag on the passenger side
has not been turned off by the electronic control unit and can
deploy if the control unit senses an impact that meets the condi­
tions stored in its memory.
For example, the airbag may deploy if:
• a small child that is heavier than a typical 1 year-old child is on
the front passenger seat (regardless of whether the child is in one
of the child safety seats listed =>
page 170), or
• a child who has outgrown child restraints is on the front
passenger seat .
If the front passenger airbag is turned off, the
PASSENGER AIR BAG
OFF
light comes on in the instrument cluster and stays on .
The front airbag on the passenger side may
not deploy (the
PASSENGER AIR BAG OFF light does not illuminate and stay litl even
if a small adult or teenager, or a passenger who is not sitting upright
with their back against a non-reclined backrest with their feet on the
vehicle floor in front of the seat is on the front passenger seat
=> page 130, "Proper seating position for the driver".
If the front passenger airbag deploys , the Federal Standard requires
the airbag to meet the "low risk" deployment criteria to reduce the
risk of injury through interaction with the airbag. "Low risk" deploy­
ment occurs in those crashes that take place at lower decelerations
as defined in the electronic control unit=>
page 157, "PASSENGER
AIR BAG OFF light".
Always remember, a child safety seat or infant carrier installed on
the front seat may be struck and knocked out of position by the rapidly inflating passenger's airbag in a frontal collision. The airbag
could greatly reduce the effectiveness of the child restraint and
even seriously injure the child during inflation.
For this reason, and because the back seat is the safest place for
children -when properly restrained according to their age and size
- we strongly recommend that children always sit in the back seat
=>
page 168, "Child Safety" . .,

__________________________________________________ A_ i_ r _b _a...; g::- s_ y=--- s_t _e _m __ lllll
& WARNING
A child in a rearward-facing child safety seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates -even with an Advanced Airbag System .
• 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. • If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not come on and stay on, immediately install the rear -facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer .
• Forward-facing child safety seats installed on the front
passenger's seat may interfere with the deployment of the airbag
and cause serious personal injury to the child.
& WARNING
If , in exceptional circumstances, you must install a forward-facing
child restraint on the front passenger's seat:
• Always make sure the forward-facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag .
• Never put the forward -facing child restraint up against or very
near the instrument panel.
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range, as far away from the
airbag as possible before installing the forward -facing child
restraint. 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 .
Controls and equip­ ment Safety first
Vehicle operation
& WARNING
To reduce the risk of serious injury , make sure that the PASSENGER
AIR BAG OFF light will be displayed whenever a child restraint is installed on the front passenger seat and the ignition is switched
on .
• If the PASSENGER AIR BAG OFF light does not stay on , perform
the checks described=>
page 157, "Monitoring the Advanced
Airbag System ".
• Take the child restraint off the front passenger seat and install
it properly at one of the rear seat positions if the PASSENGER AIR
BAG OFF light does not stay on.
• Have the airbag system inspected by your Audi dealer immedi­
ately. • Always carefully follow instructions from child restraint manu­
facturers when installing child restraints .
& WARNING
If, in exceptional circumstances, you must install a forward or
rearward-facing child restraint on the front passenger's seat :
• Improper installation of child restraints can reduce their effec­
tiveness or even prevent them from providing any protection.
• 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 manufacturer's instructions
provided with the child safety seat or carrier .
• Never place additional items on the seat that can increase the
total weight registered by the weight -sensing mat and can cause
injury in a crash . •
Vehicle care Do-it-yourself service Technical data

Airbag syst em -----------------=~-
& WARN ING (co ntinued)
is he avier tha n the t ypi ca l o ne -yea r old child i s on the front
p asse nger seat and the othe r con dition s for airba g deploym ent
a re met .
• Accident stat istic s have shown that children are gen era lly safer
i n th e rea r seat ar ea th an in the front se ating posit ion .
• For its ow n sa fet y, a c hild should always ride pr operly
re str ai ned f or it s a ge a nd si ze . •
Advanced front airbag system
Your vehicle is equipped with a front Advanced Airbag System in
compliance with United States Federal Motor Vehicle Safety Stan­
dard 208 as applicab le at the time your vehicle was manufactured.
Th e 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 inflate only
in frontal impacts when the vehicle deceleration is high enough .
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 restraint system in your vehicle. A lways remember that
the airbag syste m can only help to protect you, if you a re sitting
upright, wearing your safety be lt and wearing it proper ly. This is why
you and your passengers must a lways be proper ly restrained, not
just because the law requires you to be .
The Advanced Airbag System in your vehicle has been certified to meet the " low risk" requirements for 3 and 6 year-old children on the
passenger side and very small adults on the driver side . The low risk
deployment cr iteria are intended to help reduce the risk of injury
through interaction with the front airbag that can occur, for
examp le, by being too c lose to the steering wheel and instrument
panel when the airbag inflates .
Controls and equip­
ment Safety first Vehicle operation
I
n addition, the system has been certified to comply with the
"suppression" requirements of the Safe ty Standard, to turn off the
front airbag for infants 12 months old and younger who are restrained on the front passenger seat in child restraints that are
listed in the Standard=>
page 170, "Child restraints and Advanced
Airbags" .
"Suppression" requires the front airbag on the passenger side to be
turned off if:
• a child up to about one year of age is restrained on the front
passenger seat in one of the rear-facing or forward-facing infant
res traints listed in Federal Motor Vehicle Safety Standard 208 with
wh ich the Advanced Airbag System in your vehicle was certified. For
a listing of the child rest raints that were used to certify your
vehic le's compliance with the US Safety Standard=>
page 170,
• weight less than a threshold leve l stored in the cont rol unit is
detected on the front passenger seat.
When a person is detected on the front passenger seat, weighing more than the total weight of a child that is about 1 year old
restrained in one of the rear-facing or forward -facing infant
restraints (lis ted in Federal Motor Vehicle Safety Standard 208 with
which the Advanced Airbag System in your vehicle was certified),
the front airbag on the passenger side may or may not deploy .
The
PA SS EN GER AIR BA G OFF light comes on when the e lectronic
control unit detects a total weight on the front passenger seat that
requires the front airbag to be turned off. If the
PAS SEN GER AIR BAG
OFF
light does not come on, the front airbag on the passenger side
has no t been turned off by the con trol un it and can deploy if the
control unit senses an impact that meets the conditions stored in its
memory .
If the total weight on the front passenger seat is more than that of
a typical 1 year -o ld, but less than the weight of a small adult, the
front a irbag on the passenger side may dep loy (the
PA SS ENGER AIR
BAG OFF
light does not come onl.
For e xample , the airb ag may deplo y if:
Vehicle care Do-it-yourself service Technical data

-Airbag system ----------------
•
a sma ll ch ild th at is heavi er than a typ ica l 1 ye ar-o ld child is on
th e front p assenger s eat (regar dle ss of whet her the child is in on e
of th e child saf ety seats listed~
page 1 70),
• a chil d w ho h as outgrow n chi ld re str ain ts is on the fr ont
passen ger seat.
I f the fr ont passe nge r ai rbag is tu rned off, the
PASSENGER AIR BAG
OFF
light in the cent er o f the instrum ent pan el wi ll come on and stay
o n.
The front airb ag o n the passenger si de may
not depl oy (the
PASSENGER AIR BAG OFF light does not illuminate and stay l it) if:
• a small ad ult or t eenage r is on the fr ont passenger sea t
• a passenger who is not sitting upright with their bac k against a
n o n-re clined back res t w it h th e ir fe et on th e ve hicle flo or in fr ont of
th e se at is on th e front pass enger s eat.
I f the front pas senger ai rbag depl oys, the Federa l Standard requ ires
the airb ag to me et the "low r is k" dep loy ment criter ia to h elp r educe
th e risk of in jury t hroug h in teraction w ith the a irbag. "Low risk"
de ploy ment occu rs in those c ras hes that ta ke p lace a t low er d ecel­
erations as defined in the electron ic contro l unit~
page 157.
Always remember:
P lease be sur e to r ead the i mport ant info rm ation
in th e sections that follow and b e sur e to heed all of the WARN INGS.
& 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 injur ies 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 .
& WARNING
A child in a rearward-facing child safety seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates -even with an Advanced Airbag System .
• Although the Advanced Airbag System in your vehicle is
designed to turn off the front airbag when a rearward -facing child
restraint has been installed on the front passenger seat , nobody
can absolutely guarantee that deployment is impossible in all
conceivable situations that may happen during the useful life of
your vehicle.
• 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 .
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not come on and stay on ,
immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer .
& WARNING
If, in exceptional circumstances , you must install a forward -facing
child restraint on the front passenger's seat :
• Always make sure the forward -facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag .
• Never put the forward-facing child restraint up against or very
near the instrument panel.
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range , as far away from the
airbag as poss ible , before installing the forward-facing child
restraint. The backrest must be adjusted to an upright position. ..,.

Airbag syst em -----------------=~-
& WARN ING (co ntinued)
• Make s ure th at the PA SSENGER AIR BAG OFF light come s on
a nd sta y s o n all the tim e whene ver the ign ition i s sw itched on . •
Advanced Airbag System components
The front passenger seat in your vehicle has a lot of very important
parts of the Advanced Airbag System in it. These parts inc lude the
weight -sensing mat, sensors, wiring, brackets, and more. The func ­
tion of the system in the front passenger seat is checked by the e lec ­
tronic contro l unit when the igni tion is on. The control unit monitors
the Advanced Airbag System and turns the airbag indicator light on
when a malfunction in the system components is detected . The
function of the airbag indicator light is described in greater detail
below. Because the front passenger seat contains important parts
of the Advanced Airbag System, you must take care to prevent it
from being damaged. Damage to the seat may prevent the
Advanced Airbag for the front passenger seat from doing its job in a crash.
T he front A dvance d Airb ag Syst em con sis ts of th e
following:
• Crash sensors in the front of the vehicle that measure vehicle
acceleration/dece leration to prov ide 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 contro l unit a lso "decides" whether the safety belt
pretensioners should be activated .
• A dual -stage Advanced Airbag with gas generator for the driver
inside the steering wheel hub .
• A dual -stage Advanced Airbag and gas generator inside the
instrument pane l for the front passenger .
Controls and equip­
ment Safety first Vehicle operation
•
A weight -sensing mat under the upholstery padding of the front
passenger sea t cushion that measures the total weight on the seat .
The information registered is sent continuously to the e lectronic
control unit to regula te dep loyment of the front Advanced Airbag on
the passenger side.
• An airbag monitoring syste m and indica tor l ight in the instru ­
ment cluster=>
page 157.
• The PASSENGER AIR BAG OFF light comes on and stays on in the
center of the instrument panel=>
page 157, fig. 133 and tells you
when the front Advanced Airbag on the passenger side has been
turned off .
• A sensor be low the safety belt latch for the front seat passenger
to measure the tension on the safety belt . The tension on the safety
belt and the weight registered by the weight -se nsing mat help the
control unit "decide" whether the front airbag for the front
passenger sea t should be turned off o r not =>
page 147, "Child
restraints on the front seat -some important things to know" .
• A sensor in the safety belt latch for the dr iver and for the front
seat passenger that senses whether that safety be lt is latched or not
and t ransmits this information to the electronic control unit.
& WARNING
Damage to the front pa ssenger seat can prevent the front airbag
fr om worki ng properly .
• Improper repair or di sa ssembly of the front pa ssenger and
dri ver seat will prevent th e Adv an ced Airbag Sy stem from func­
tioning properly.
• Rep air s to the front p assenger seat must b e perfor med by qu al­
ified and properly tra ined work shop per sonnel .
• Never remo ve the fro nt pa ssenger or dr iver se at from the
v ehi cle.
• Nev er remove th e uphol stery from the fron t pass eng er seat.
• Never disas semble or r emove p arts from the seat or di sconne ct
wires from it . ..
Vehicle care Do-it-yourself service Technical data

_,___A_ ir_ b_ a.::g <-- s-- & WARN ING (continued )
• Never carry sharp object s in your pockets or place them on the
seat.
If the weight- sen sing mat in the passenger seat is punctured
it cannot work properly .
• Never carry things on your lap or ca rry objects on the
passenger seat. Such items can increase the weight registered by
the weight -sen sing mat and send the wrong information to the
a irbag control unit .
• Never store item s under the front pas senge r seat . Part s of the
Advanced Airbag System under the passenger seat could be
damaged , preventing them and the airbag system from working
properly .
• Never place seat covers or replacement upholstery that ha ve
not been specifically approved by Audi on the front seats.
• Seat covers can prevent the Advan ced Airbag System from
recognizing child restraints or occupants on the front pa ssenger
seat and prevent the side airbag in the seat backrest from
deploying properly .
• Never use cushions , pillows , blankets or similar items on the
front passenger seat. The additional padding will prevent the
weight -sen sing mat in the seat from accurately registering the
child restraint or person on the seat and prevent the Advanced
Airbag System from functioning properly .
• If you must use a child re straint on the front passenger seat
and the ch ild restra int manufacturer' s instructions require the use
of a towel , foam cushion or something else to properly position
the child restraint , make certain that the PASSENG ER AIR BAG OFF
light comes on and stays on whenever the child restraint is
installed on the front passenger seat .
• If the PASSENGER AIR BAG OFF light does not come on and stay
on , have the airbag system inspected by your Audi dealer. •
How the Advanced Airbag System
components work together
The front Advanced Ai rbag System and the side airbags s upplement
th e pro tec tion offered by t he fro nt three -po int safety belts w ith
pretensioners and load limite rs and the adjustab le head restraints
t o help reduce the risk o f injury in a w ide ra nge o f acc ide nt and
crash situations . Be sure to read the important information about
sa fe ty an d heed the WAR NINGS in this chapte r.
D ep loyment of the Advanced Airbag System and the activation of
th e safe ty be lt pre tens ioners depends on th e decele ra tion
measu red by the crash se nsors and regist ered by the electronic
con trol un it. Crash seve rity depe nds on speed a nd decele ra tion a s
w ell as the mass a nd st iffne ss of the ve hicle or objec t in vo lv ed in th e
crash .
When t he elect ronic control unit registe rs a low sever ity crash and
the safety belt is be ing used, the airbag wi ll not deploy. If the safety
belt is no t being used, the fir s t stage de ploy s, f ollowed by th e
second stage after a much later time in the crash sequence .
I f the electronic control unit registers a crash of medium severity,
th e first stage o f the a irba g dep loys followed by the second sta ge at
a much later time in the crash sequence -regardless of whether the
sa fe ty belt is bein g use d or not. In hig her se ver ity cras hes as r eg is­
tered by the electronic control unit, both the first and second stages
deploy al most at the same tim e.
On the passe nger s ide, regardless of safety belt use, the airbag wi ll
be tu rned off if the weight on the passenger seat is less than the
amount programmed in the e lectronic control unit. The front airbag
on the passenger side wi ll a lso be turned off if one of the child
sa fet y seats that has been cer tified under F ederal Mo to r V ehi cle
Safety Standard 208 has been recognized on the seat. The
PASSENGER AIR BAG OFF light co mes on and stays o n to tell y ou
when the front Advanced Airbag on the passenger side has been
t ur ned off ~
pag e 147, " C hi ld re stra int s on t he fro nt seat -so m e
important things to know". .,

& 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