2015 AUDI TT ROADSTER warning

116 Airbag sys te m
res traints or occupants on the fr ont pas­
senger seat and prevent the sid e airbag
in t he seat backrest from deploying prop­
erly.
- Never use cushions, pillows, blankets or
similar items on t he front passenger
seat . The add itional padd ing will prevent
the weight-sensing mat in the seat from
accurately reg istering the ch ild restra int
or person on the seat and prevent the
Advanced Airbag System from function­ ing properly .
- If you mus t use a child restra int on the
front passenger seat and the ch ild re­
straint manufacturer's instructions re ­
quire the use of a towel, foam cushion or
something else to properly position the
child restraint, make certa in that the
PA SSENGER AIR BAG OFF light comes
on and stays on whenever the child re­
st raint is installed on the front passen­
ger seat .
- If the
PA SSENGER 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 Airbag System and the
side airbags s upplement the protection of ­
fered by the front three-point safety be lts
with pretensioners and load limiters and the
adjustab le head restra ints to he lp reduce the
risk of injury in a w ide range of acc ident and
crash situat ions . Be sure to read the impo r­
tant information about safety and heed the
WARNINGS i n this chapter .
Deployment of the Advanced Airbag System
and the activat ion of the safety be lt preten­
sione rs depend on t he dece le rat ion meas ured
by the c rash senso rs and regis tered by the
e lectronic control un it . Crash severity depends
on speed and dece leration as well as the mass
and stiffness of the vehicle o r object involved
in the crash. When the e
lectronic contro l unit registe rs a
low severity cras h and the safety belt is being
u sed, the airbag will not dep loy.
If the sa fety
belt is not being used, the first stage deploys,
followed by the second stage after a much lat­ er t ime in t he crash sequence.
If the electron ic contro l unit registers a crash
of medium severity, the first stage of the air­
bag deploys followed by the second stage at a
much later time in the crash sequence -re ­
gardless of whether the safety belt is be ing
u sed or not . In higher sever ity c rashes as reg­
i ste red by the elec tronic con tro l un it, bo th the
first and se con d stages dep loy almost at the
same t ime.
On the passeng er side, rega rdless of safety
belt use, t he a irbag w ill be tu rned off if the
we ight on the passenger seat is less th an the
amount programmed in the e lectronic control
u nit . The front airbag on the passenge r side
will a lso be turned off if one of the child safe ­
ty seats that has been certified under Federal
Motor Vehicle Safety Standard 208 has been
recogni zed on the seat . The
PASSENGER AIR
BAG OFF light comes on and stays on to tell
yo u when the front Advanced A irbag on the
passenge r side has been turned off
¢ page 109, Child restraints on the front seat
- some important things to know .
.&_ WARNING ~
To reduce the risk of in ju ry when an a irba g
inflates , always wear safety be lts p roperly.
- If you are unrestra ined, leaning forw ard ,
sitt ing s ideways or o ut o f position in any
way, your risk of injury is m uch higher.
- You will a lso receive se rious injuries and
could even be killed if you a re up against
the airbag or too close to it when it in­
f lates - even with an Advanced A irbag
¢page 108.

More important things to know about
front a irbags
F ig. 112 Inflated front airba gs
Safety belts are important to help keep front
seat occupants in the proper seated pos it ion
so that airbags can u nfold prope rly and pro­
v ide supp lemental protection in a fronta l co l­
lision .
The front a irbags are designed to provide ad­
d itiona l protect io n for the chest and face of
the dr iver and the fron t seat passenger whe n:
- safety belts are wor n prope rly,
- the seats have been posit ioned so tha t the
occupant is proper ly seated as far as possi­
ble from the a irbag,
- and the head restraints have been properly
adjusted .
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 dan­
gerous projectiles, and be pushed into you if
the airbag inflates .
When an a irbag deploys, fine dust is released.
This is normal and is not caused by a fire in
the vehicle . This dust is made up most ly of a
powder used to lubr icate the airbags as they
deploy. It cou ld i rritate s kin .
It is important to remember that while the
supp lemental airbag system is designed to re ­
duce the likelihood of serious i njuries, other
inj uries, fo r example swell ing, bru isi ng a nd
minor abrasions, ca n also happen when air­
bags inflate. Airbags do not protect the a rms
or the lower pa rts of the body. Front airbags
only s upplement the t hree point safety be lts
in some frontal collisions in which the vehicle
A irba g sy stem 11 7
deceleration is high eno ugh to deploy the air­
bags .
Front airbags will not deploy :
-if t he ignition is sw itched off when a crash
occu rs,
- in side co llisions,
- in rear-end co llis ions,
- in rollovers,
- when the crash dece leration measured by
the airbag system is less than the minimum
threshold needed for a irbag deployment as
reg istered by the electronic con tro l unit .
The front pa ssenger airbag will also not
deploy:
- when the front passenge r seat is not occu­
pied,
- when the weight on the front passenger
seat as sensed by the Advanced Airbag Sys ­
tem ind icates that the front a irbag on the
passenger side has to be tu rned off by th e
elec tronic con trol un it (the
PASSENGER AIR
BAG OFF
li ght comes on and st ays o n).
&_ WARNING ~
Si tti ng in the wrong pos ition can inc rease
the r isk of se rious in ju ry in crashes.
- To reduce t he ris k of injury when the air­
ba gs inflate, the drive r and passenge rs
must always s it in an upr ight position,
m ust not lean against or place any part
of their body too close to the area whe re
the airbags a re located.
- Occupants who are unbe lted, out of posi­
tion or too close to the airbag can be se­ rious ly injured by an airbag as it unfolds
with g reat force in the blink of an eye
~page 109 .
&_ WARNING
-
A child in a rearwar d-fac ing ch ild safety
seat installed on th e front passe nger seat
will be ser ious ly injured a nd ca n be killed if
the front ai rb ag inflate s - even wi th an Ad-
vanced Ai rbag Sys tem.
Ill-

118 Airbag sys te m
- The inflating airba g will hit the child
safety seat or infant carri er w it h great
force and w ill smash the ch ild safety seat
and child against the backrest, cente r
arm r est, door or ro of.
- Ne ver install a r earward facing child
sa fety seat on the fro nt passenger seat
unl ess the
PASSENGER AIR BAG OFF
ligh t co me s on and stays on. If the PA S­
SENGER AIR BAG OFF
ligh t does no t
come on and stay on, the inflating airbag
will hit the child safety seat or infant car ­
rier 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
authorized Audi dealer .
A WARNING
Objects between you and the a irbag will
increase the risk of injury in a crash by in­
terfering with the way the airbag unfolds
or by being pushed into you as the a irbag
inflates.
- Never hold th ings in your hands or on
yo ur lap when the vehicle is in use.
- Never transport items on or in the area
of the front passenge r seat. Objects
c ou ld move into the area of the front air­
bags dur ing braking or other s udden ma­
neuver and become dange rous projec ­
tiles that can cause serious personal in­
jury if the airbags inflate.
- Never place o r attach accessories or oth­
er objects (such as cup ho lders, tele­
phone brackets, large, heavy or b ulky ob­
jects) on the doors, over or near the area
marked "AIRBAG" on the steering wheel,
instrument panel, seat backrests or be­
tween those a reas and yourself. These
objects co uld cause injury in a crash, es­
pecially when the airbags inflate.
- Never recline the front passenger's seat
to transport objects. Items can also
move in to the area o f the side airb ag or
the front airbag dur ing braking or in a
sudden maneuver. Objects near the air -
-
bags can become projectiles and cause
inju ry, partic ularly when the seat is re­
clined.
A WARNING
The fine dust created when airbags deploy
can cause breathing prob lems for people
with a history of asthma or other breath­
i ng cond itions.
- To reduce the risk of breath ing problems,
those with asthma o r othe r respiratory
conditions shou ld get fresh air righ t
away by getting o ut of the ve hicle or
open ing win dows or doors.
- I f you are i n a collision in which airbags
deploy, wash your hands and fa ce with
mild soap and wate r before ea ting.
- Be ca reful not to get the dust into your
eyes, o r into any c uts or s cratches.
- If the res id ue should get into your eyes,
flush them w ith wate r.
Monitoring the
Advanced Airbag System
tii Airbag monitoring indicator light
Two separate indicators monitor the function
of the Advan ced Airbag Sy stem: the airbag
monitoring indicator light and the
PASSEN­
GER AIR BAG OFF
light.
T he Advanced A irbag Sys tem ( incl uding the
ele ctron ic cont rol unit, sensor circ uits and sys ­
tem wir ing) is monitored continuously to
make sure that it is functioning properly
whenever the ignition is on. Eac h time you
turn on the ignition, the a irbag monitoring in­
dicator light . will come on for a few sec­
onds (self diagnostics).
The system must be inspected when the
i ndicator light•=
-does not come on when the ignition is
sw itched on,
- does not go out a few seconds after you
have switched on the ignit ion, or

- comes on while driving.
I f an airbag system malfunct io n is dete cted ,
the ind icator light will firs t start flashing to
catch the driver 's attention and then stay on
continuously to serve as a constant reminder
to have the system inspected immed iately.
If a malfunction occurs tha t tur ns the fron t
ai rbag on the passenger side off, the
PA SSEN­
GER AIR BAG OFF
li ght wi ll come on and stay
on wheneve r the ignition is on.
A WARNING
An airbag system that is not funct ioning
properly cannot provide supplemental pro­
tection in a frontal crash.
- If the airbag indicator light comes on, it
means that the re may be somet hing
wrong with the Adva nced Airbag System .
It is possible that the airbag will inflate
w hen it is not s upposed to, or w ill not in­
flate when it should.
- Have the airbag system inspected imme­
diately by your Aud i dealer .
PASSENGER AIR BAG OFF light
Fig. 11 3 Section fr om the inst ru men t pa nel: PASS EN­
G ER AIR BAG O FF light
The PASSENGER AIR BAG OFF light is located
i n the cen ter of the instrument panel
c:> fig. 113 .
The PASSENGER AIR BAG OFF light will come
on and stay on to tell you when the front Ad ­
vanced A irbag on the passenger side h as been
turned off by t he e lectronic control u nit. Each
time you tu rn on the ign ition, the
PASSEN­
GER AIR BAG OF F
light will flash for a few
seconds and:
A irba g sy stem 119
- will stay on if the front passenger seat is not
occupied,
-w ill stay on i f there is a small ch ild or child
restraint on the front passenger seat,
- will go out if the fron t passenger seat is oc­
cupied by an adult as registered by the
weight-sensing mat .
T he
PAS SENGER AIR BAG OFF light must
com e on and sta y on
if t he igni tion is on and
- a car bed has been installed on the front
seat , or
- a rearward-facing child restraint has been installed on the front passenger seat, or
- a forward -fac ing ch ild restra int has been in ­
stalled on the front passenger seat, or
- the weight reg istered on the front passen ­
ger seat is equal to or less than the com­
bi ned weight of a typical 1 year-old restra in­
ed in one of the rear-facing or forward-fac­
ing infant restra ints listed in Federal Motor
Ve hicle Safety Standa rd 208 wi th which the
Advanced Airbag System in you r veh icle was
certified.
If t he fron t passenger seat is not occupied,
the fro nt airbag will not deploy, and the
PAS­
SENGER AIR BAG O FF
light will stay on . Nev ­
er install a rearward-facing child restraint on
the front passenger seat
c:> page 109 , Child
res train ts on the front sea t-some important
things to know
and c:> page 129, Child Safe ty .
If the PASSENGER AIR BAG OFF light come s
o n
when one of the cond itions listed above is
met, be sure to check the light regularly to
make certain that the
PASSENGER AIR BAG
OFF
light stays on continuously wheneve r the
ignition is on .
If the PASSENGER A IR BAG
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 turn ing the ign ition
off and then turn ing it on again;
- remove and reinstall the ch ild restra int .
Make s ure that the ch ild restraint is proper ly
installed and that the safety belt for the
front passenge r seat has been correc tly
rou ted aro und t he chi ld restraint as

120 Airbag sys te m
described in the child restraint manufactur­
er 's instructions;
- make sure that the convertible locking fea­
ture on the safety be lt for the front passen­
ger seat has been activated and that the
safety belt has been pulled tight. The belt
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
c> page 13 7.
- make sure that things that may increase the
weight of the child and child safety seat are
not being transported on the front passen­
ger seat;
- make sure that the safety belt tension sen­ sor is not blocked . Shake the safety belt
latch on the front passenger seat back and
forth;
- If a strap or tether is bei ng used to tie the
child safety seat to t he front passenger
seat, make sure t hat it is no t so tight that it
ca uses the we ight -sensing mat to meas ure
more weight than is actua lly on the seat .
If the PASSENGER AIR BAG OFF light still
doe s not come on and does not stay on con­
tinuously (when the igni tion is sw itched on),
- take the ch ild restraint off the front passen-
ger seat and have the ai rbag system inspect­
ed by you r A udi dealer immediate ly .
The PASSEN GER AIR BAG OFF light should
NO T come on when the ign ition is on and an
adult is sitt ing in a p rope r seating pos it ion on
the front passenger seat. If the PASSENGER
AIR BAG OFF ligh t comes on and stays on or
flashes for about 5 seconds whi le driving, un ­
der these circumstances, make s ure that:
- the ad ult on the front passenger seat is
properly seated on the center of the seat
c u shion with his or her back up against the
backrest and the backrest is not reclined
c> page 92, Prop er occupant seating posi­
tions,
- th e ad ult is not taking weight off the seat by
ho lding on to the passenger assist handle
above the front passenger door, - the sa
fety belt is being properly wo rn and
that there is not a lot of s lack in the safety
be lt webb ing,
- accessory seat covers or cushions or other
things that may cause an incorrect reading
or impression on the weight-sensing mat
under the upho lstery of the seat have been
removed from the fron t passenger seat,
- a safety belt extender has not been left in the safety belt latch for the front passenger
seat .
In addition to the PASSENGER AIR BAG O FF
li ght in the center of the instr ument panel,
the message PASSENGER AIR BAG OFF or
PASSENGER AIR BAG ON will briefly appear
i n the i nstr ument cluster d isplay. This is to i n­
form the dr iver of the current front passenge r
airbag status.
Important safety instructions on
monitoring the Advanced Airbag System
A WARNING
An a irbag system that is not functioning
p roperly cannot p rovide supplemental pro­
tection in a frontal c rash.
- If the airbag ind icator light comes on, i t
means that there may be something
wrong with t he Advanced Airbag System.
It is poss ible that the ai rbag w ill inflate
when it is not supposed to, or will not in­
f late when it sho uld .
- Have the airbag system inspected imme­
d iate ly by yo ur Audi dealer.
A WARNING
If the front airbag inflates, a child without
a child restraint, in a rea rward-facing child
safety seat or in a forward-facing child re­
straint that has not been properly installed
will be serious ly injured and can be killed.
- Even tho ugh your vehicle is equipped
with an Advanced A irbag System, make
certain that all children, espec ially 12
yea rs and younger, always ride properly
restrained fo r their age and size.
-

-If you must install a rearward facing
child safety seat on the front passenger
seat because of exceptional circumstan­ ces and the
PA SSE NGER AI R BAG OFF
light does not appear and stay on have
the a irbag system inspected by your Audi
dealer.
- A tight tether or other strap on a rear­
ward-fac ing child restra int attached to
the front passenger seat can put too much pressure on the weight-sens ing
mat in the seat and register more weight
than is actually on the seat. The heavier
weight registered can make the system
work as though an adu lt were on the seat
and deploy the Advanced Airbag when it
must be suppressed caus ing serious or
even fatal injury to the child .
- If, in exceptional circ umstances, you
must install a forward-facing child re­
st raint on the front passenger seat, a l­
ways move the seat into its rearmost po­
sit ion in the seat's fo re and aft adjust­
ment range, as far away from the airb ag
as possib le . The backrest m ust be adjust­
ed to an upright position. Make sure that
the
PASSENGER AIR BAG OFF light
comes on and stays on all the t ime when­
ever 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, have the air­
bag system inspected by your Aud i deal­
er before transporting anyone on the
front passenger seat.
(Di Tips
If the weight-sensing mat in the front pas­
senger seat detects an empty seat, the
front airbag on the pa ssenge r side will be
t urned off, and
PASSENGER AIR BAG OFF
w ill stay on .
Airbag system 12 1
Repair, care and disposal of the airbags
Parts of the airbag system are i nstalled at
many diffe rent p laces o n your Aud i. Insta llin g,
removing, servicing or repa iring 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 coll is ion.
T he re a re some important t hings you have to
know to make sure that the effectiveness o f
the system wi ll not be impaired and that dis­
carded components do not cause injury or pol ­
lute the environment.
A WARNING
Improper care, serv ic ing and repair proce­
dures can increase the risk of personal in­
jury and death by preventing an a irbag
from deploying when needed or deploying
an a irbag unexpec tedly:
- Never cover, obst ruct, or change the
steer ing whee l horn pad or airbag cover
or the inst rument panel or mod ify them
in any w ay .
- Never attach any objects s uch as c up
holders or telephone mountings to the
surfaces covering the a irbag un its .
- For cleaning the horn pad or instr ument
panel, use only a soft, dry cloth or one
mo istened with pla in water. Solvents or
cleaners could damage the airbag cover
or change the st iffness or strength of the
material so that the airbag cannot de­
ploy and protect properly.
- Never repair, adjust, or change any parts
of the a irbag system.
- All work on the steering wheel, instru­
ment panel, front seats or e lectr ica l sys­
tem (including the installation of audio
equ ipment, cellular telephones and CB
radios, etc.) must be performed by a
qualified technic ian who has the training
and specia l equipment necessary.
- For any work on the airbag system, we
strongly recommend that you see your
author ized Audi dealer or qualified work-
shop.
~
•
•

122 Airbag sys te m
- Never modify t he front bumper or parts
of the veh icle body .
- Always make sure that the side airbag
can inflate without interference:
- Never install seat covers or replace­
ment upholstery ove r the front seat­
backs that have not been spec ifi cally
approved by A udi.
- Never use add itiona l seat cushions that
cover the areas whe re the side airbags
inflate .
- D amage to the o rigina l seat covers or
to the seam in the area of the side air­
bag module must always be repaired
immediately by an authorized Audi
dealer.
- The airbag system can be activated only once . Afte r an airbag has inf lated, it
must be replaced by an author ized Audi
dealer or qualified technic ian who has
the techn ica l information, tra ining and
special equipment necessary.
- The airbag system can be deployed only
once. After an a irbag has been deployed,
it must be replaced w ith new replace ­
ment parts designed and approved espe­
cially for your Aud i model version. Re­
placement of complete a irbag systems
or airbag componen ts must be per­
formed by qualified workshops only .
Make sure that any airbag service act ion
is entered in your Audi Warranty
& Main­
tenance booklet under
AIRBAG REPLACE­
MENT RECORD.
-For safety reasons in severe accidents,
the a lternator and starter are separated
from the vehicle battery with a pyrotech­
nic circuit interrupter.
- Work on the pyrotechnic cir cuit inter­
rupter must on ly be performed by a
qua lified dealer - risk of an accident !
- If the vehicle or the c ircuit interrupter
is sc rapped, all applicable safety pre ­
cautions must be followed.
{® For the sake of the environment
Undeployed airbag modules and preten­
s ioners might be classif ied as Perchlorate
Materia l -special handling may app ly, see
www .dtsc.ca.gov/hazardouswaste/per­
ch lorate . When the veh icle or parts of the
restraint system including airbag modu les
and safety belts with pretensioners are
scra pped, all applicab le laws and regu la­
tions must be obse rved. Your authorized
A udi dealer is familia r with these require­
ments and we recommend that you have
your dealer perform this service fo r you .
· Other things that can affect Advanced
Airbag performance
Chang ing the veh icle's suspens io n system can
change the way that the Advanced Airbag Sys­
tem perfo rms in a c rash. For examp le, using
t ir e- rim combinat ions not approved by A udi ,
lower ing the veh icle, c hanging the st iffness of
the suspens ion, including the spr ings, suspen­
sio n struts, shock absorbers etc . can change
the forces that ar e measured by the airbag
sensors and sent to the electronic contro l
unit. Some suspension changes can, for exam­
ple, increase the force levels measured by the
senso rs and make the airbag system deploy in
c rashes in which it wou ld no t deploy if the
c h anges had not been made. Other kinds of
c h anges may reduce the fo rce leve ls meas ­
u red by the sensors and p reven t the airbag
from dep loying when it should.
A WARNING
Changing the vehicle's suspension includ­
i ng use of unapproved tire-rim combina­
tions can change Advanced Airbag per­
fo rmance and increase the r isk of serious
personal injury in a crash .
- Never install suspension components
that do not have the same performance characterist ics as the components origi ­
na lly installed on your vehicle .
- Never use tire-rim combinations that
have no t been approved by Audi.

_& WARNING
Items stored between the safety belt
buckle and the center console can cause
the sensors in the buckle to send the
wrong informat ion to the electronic con­
trol modu le and prevent the Advanced A ir­
bag System from working properly.
- Always make sure that noth ing ca n inte r­
fere w ith the safety belt buck les and that
t hey are not obstructed.
Knee airbags
Description of knee airbags
The knee airbag system can provide supple­
mental protection to properly restrained
front seat occupants.
F ig . 11 4 Drive r's a irbag
The driver knee a irbag is in the instrument
panel underneath the steering whee l
~ fig. 114, the airbag for the passenger is at
about the same height in the i nstrument pan­
e l underneath the g love compartment.
The knee airbag offers additiona l protection
to the driver's and passenger's knees and up­
per and lower thigh areas and supp lements
the protect ion by the safety be lts .
I f the front airbags deploy, the knee airbags
a lso deploy i n frontal collisions when the de­
p loyment threshold sto red in the cont ro l uni t
is met ~
page 117, More important things to
know about front airbags .
In addition to their normal safety function,
safety belts he lp keep the driver or front pas ­
senger in posit ion in a frontal coll is ion so that
A irba g sy stem 123
the ai rbags can provide supplemental protec­
tion .
T he airbag system is no t a subs tit ute for your
sa fety be lt . Rather, it is part of the overall oc­
cupant restraint system in your vehicle . A l­
ways remember that the airbag system can
only he lp to protect you if you are wearing
your safety be lt and wearing it properly. This
is why you should always wear your safety
belt, not just because the law requires you to
do so
r::;, page 100, General notes .
Remember too, airbags will deploy on ly once
and only in certain kinds of accidents -your
safety belts are always there to offer protec­
t ion in those accidents in wh ich airbags are
not supposed to dep loy o r when they have al­
r eady deployed, for example when your vehi ­
cl e strikes or is struck by another after the
f irst collision.
This is just one of the reasons why an airbag is
not a s ubstitute fo r the safety be lt. The ai rbag
system works most effect ively when used with
the safety be lts. Therefore, always wear yo ur
sa fety belts correct ly .
It is impo rtant to remembe r that wh ile the
s u pplementa l knee airbag system is designed
to reduce the likelihood of ser ious inju ries,
other injur ies, for example, swelling, bru ising,
minor ab rasions and friction burns can a lso
occur when an airbag inflates.
The knee airbag system basically consists
of:
- The e lectronic control module
- Two in flatable ai rbags (a irbag and gas gen -
erator), one for the d river and one for the
front passenger
- The ai rbag indicator light in the instrument
panel
The knee airbag system will not deploy:
- when the ignit io n is t urned off
- in frontal collisions when the deceleration
meas ured by the control unit is too low
- in side co llisions
- in rear-end collisions
- in rollovers