steering wheel AUDI TT ROADSTER 2018 Owner's Manual

Cl 00 .-< N r--­N .-< 0 r--­Vl 00
also not inflate in side or rear co llisions, or in
ro llovers .
Alwa ys re memb er: Airbags will deploy only o nce,
and on ly in ce rtain k inds of coll is ions. Yo ur safety
be lts are always there to offer protection in those
situations in which airbags are not supposed to
deploy, or when they have already deployed; for
examp le, when your vehicle str ikes or is struck by
another vehicle after the first coll is ion.
This is just one of the reasons why an airbag is a
supp lementary restraint and is not a substitute
for a safety belt. The airbag system works most
effect ively when used with the safety belts.
Therefore, always properly wear your safety belts
<=:> page 187 .
A WARNING
Sitting too close to the steer ing whee l o r i n­
st rument panel w ill decrease the effe ct ive­
ness of the airbags and will inc rease the risk
of persona l injury in a co llision.
- Never si t close r than 10 in (25 cm) to t he
steering wheel o r inst rument pane l.
- If you cannot sit mo re than 10 in (25 cm)
from the steer ing whee l, invest iga te wheth­
er adaptive eq uipme nt may be avai lab le to
held you reach the pedals and increase you r
seating distance from the steering wheel.
- If you are unrestrained, leaning fo rwa rd, s it ­
ting sideways or o ut of position in any way,
your risk of inj ury is much higher .
- Yo u will also receive serious injuries and
cou ld even be killed if you are up against the
airbag or too close to it when it inf lates -
even with an Advanced Airbag.
- To reduce the risk of inj ury when an airbag
inflates, a lways wear safety be lts proper ly
¢ page 190, Safety belts.
- If children are not properly restrained, they
may be severely in jured or killed when an
airbag inflates.
- Never let children ride unrestrained or im­ properly restrained in the veh icle. Adjust the
front seats properly.
- Always sit as far as poss ible from the steer­
ing w heel or the inst rument panel
¢ page 180.
-
Airbag syste m
- Always sit upright w ith your back against
the backrest of your seat .
- Never p lace your feet on the instrument
panel or on the seat. Always keep bot h feet
on the floor in front of the seat to help pre­
vent ser ious injuries to the legs and hips if
the airbag inflates.
A WARNING
-
A irbags that have deployed in a cras h must be
r eplaced.
- Use o nly orig inal equipment airbags ap­
proved by Audi and installed by a trained
technicia n who has the necessary tools and
d iagnost ic equipment to prope rly replace
a ny a irbag i n yo ur vehicle and ass ure system
effe ct iveness in a crash .
- Neve r pe rmit salvaged or recycled airbags to
be inst alled in you r vehicle.
Child restraints on the front seat - some
important things to know
.,. Be sure to read the important information and
head the WARNINGS for important detai ls
about ch ildren and Advanced A irbags
¢page 216 .
The airbag on the passenger side makes the front
seat a potent ially dangerous place for a child to
ride. The front seat is not the safest place for a
child in a forward -fac ing child safety seat . It can
be a very dangerous place for an infant or a ch ild
in a rearward-fac ing seat.
The Advanced A irbag System in your vehicle has
been certified to comply with the requirements
of United States Federal Motor Ve hicle Safety
Standard (FMVSS) 208, as we ll as Canada Moto r
Vehicle Safety Standard (C MVSS) 208 as appl ica­
ble at the time you r vehi cle was manuf actured.
According to requirements , the front Advanced
Airbag System on the passenger side has been
certified for "suppression" for infants of abo ut
12 month o ld and younger and for " low risk de­
ployment" for chi ldren aged 3 to 6 years old (as
defined in the standard).
Iii>
195

Airbag system
Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat occu­
pants.
Fig. 161 location of driver airbag: in steering wheel
Fig. 162 location of front passenger's airbag: in the in­
strument panel
Your vehicle is equipped with an "Advanced Air­
bag System" in compliance with Un ited States
Federal Motor Vehicle Safety Standard
(FMVSS) 208, as well as Canada Motor Vehicle
Safety Standard (CMVSS) 208 as applicable at
the time your vehicle was manufactured.
The airbag for the driver is in the steer ing whee l
hub
~ fig. 161 and the airbag for the front pas­
senger is in the instrument panel
~fig. 162. The
general location of the airbags is marked "AIR­
BAG" .
There is a lot you need to know about the airbags
in your vehicle. We urge you to read th e detailed
information about airbags, safety belts and child
safety in this and the other chapters that make
up the owner's literature. Please be sure to heed
the WARNINGS - they are extremely important
198
for your safety and the safety of your passengers,
especially infants and small children.
A WARNING -
Never rely on airbags alone for protection.
- Even when they deploy, airbags provide only
supplemental protection.
- Airbag work most effectively when used with proper ly worn safety belts.
- Therefore, always wear your safety be lts and
make sure that everybody in your veh icle is
properly restrained.
- Always hold the steering wheel with both hands on the outside of the steering wheel
rim at the 9:00 o'clock and 3:00 o'clock po­
sitions to help reduce the risk of personal in­
jury if the driver's airbag inflates.
- Never hold the steering wheel at the 12
o'clock position or with your hands any­
where inside the steering wheel or on the
steering wheel hub. Holding the steering
wheel the wrong way increases the risk of
severe injury to the arms, hands, and head if
the dr iver airbag deploys .
.&_ WARNING
Objects between you and the airbag will in­
crease the r isk of injury in a crash by interfer­
ing with the way the airbag unfolds and/or by
being pushed into you as the airbag inflates.
-Always make sure nothing is in the front air-
bag deployment zone that cou ld be struck
by the airbag when it inflates.
-
- Objects in the zone of a deploying airbag
can become projectiles when the airbag de­
ploys and cause serious personal injury.
- Never hold things in your hands or on your
lap when the vehicle is in use.
- Never p lace accessories or other objects
(such as cup holders, telephone brackets,
note pads, navigation systems, or things
that are large, heavy, or bulky) on the doors;
never attach then to the doors or the wind­
shield; never place them over or near or at­
tach them to the area marked ,,AIRBAG" on the steering wheel, instrument panel or the
.,..

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seat backrests; never place them between
these areas and you or any other person in
the vehicle.
- Never attach objects to the windshield
above the passenger front airbag, such as
accessory GPS navigation units or music
players. Such objects could cause serious in ­
jury in a collision, especially when the air­ bags inflate .
A WARNING
A person on the front passenger seat, espe­
cially infants and small children, will receive
serious injuries and can even be killed by be­
ing too close to the airbag when it inflates.
- Although the Advanced Airbag System in
-
your vehicle is designed to turn off the front
passenger airbag if an infant or a small child
is on the front passenger seat, nobody can
absolutely guarantee that deployment un­
der these special conditions is impossible in
all conceivable situations that may happen
during the useful life of your vehicle.
- The Advanced Airbag System can deploy in accordance with the "low risk" option under
the U .S . Federal Standard if a child that is
heavier than the typical one-year old child is
on the front passenger seat and the other
conditions for airbag deployment are met.
- For its own safety, a child should always ride
properly restrained for its age and size.
Advanced front airbag system
Your vehicle is equipped with a front Advanced
Airbag System in compliance with United States
Federal Motor Vehicle Safety Standard (FMVSS)
208, as well as Canada Motor Vehicle Safety
Standard (CMVSS) 208 as applicable at the time
your vehicle was manufactured.
The front Advanced Airbag System supplements
the safety belts to provide additional protection
for the driv er's and front passenger's heads and
upper bodies in frontal crashes . The airbags in­
flate only in frontal impacts when the vehicle de­
celeration is high enough.
Airbag system
The front Advanced Airbag System for the front
seat occupants is not a substitute for your safety
belts. Rather, it is part of the overall occupant re­
straint system in your vehicle. Always remember
that the airb ag system can only help to protect
you, if you are sitting upright, wearing your safe­
ty belt and wearing it properly . This is why you
and your passengers must always be properly re­
strained, not just because the law requires you to
be.
The Advanced Airbag System in your vehicle has
been certified to meet the "low risk" require­
ments for 3 and 6 year-old children on the pas­
senger side and very small adults on the driver
side. The low risk deployment criteria are intend­
ed to help reduce the risk of injury through inter­
action with the front airbag that can occur, for
example, by being too close to the steering wheel
and instrument p anel when the airbag inflates.
In addition, the system has been certified to
comply with the "suppression" requirements of
the Safety Standard, to turn off the front airbag
for infants 12 months old and younger who are
res trained on the front passenger seat in child re­
straints that are listed in the Standard
~page 218, Child restraints and Advanced front
airbag system .
"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 restraints listed in Federal Motor Vehicle Safety Standard 208
with which the Advanced Airbag System in your
vehicle was certified . For a listing of the child
restraints that were used to certify your vehi­
cle's compliance with the US Safety Standard
~page 218,
- When a person is detected on the front passen­
ger seat that has an electrical capacitance that
is more than the total electrical capacitance of
a child that is about 1 year old restrained in one
of the rear-facing or forward-facing infant re­
straints (listed in Federal Motor Vehicle Safety
Standard 208 with which the Advanced Airbag
System in your vehicle was certified), the front
.,,.
199

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adjustment range, as far away from the air­
bag as possib le, before insta lling the for­
ward-facing child restra int.
- Always make sure that the safety belt upper
anchorage is beh ind the child restraint and
not next to or in front of the chi ld restraint
so that the safety belt will be properly pos i­
t ioned.
- Always make sure that there is nothing on
the front passenger seat that w ill cause the
capacit ive passenger detection system in
the seat to signa l to the Airbag System that
the seat is occupied by a person w hen it is
not, or to sign al that it is occ upied by some­
one who is heavier than t he pe rson actua lly
sitting on the seat . The presence of addi­
tiona l objects could ca use the passenge r
front airbag to be turned on when it shou ld
be off, or could cause the airbag to work in a
way that is different from the way it would
have worked wi tho ut the object on t he seat .
- Make sure that the
PASSENGER AIR BAG
OFF ~; light comes on and stays on all the
t ime w henever the ignition is sw itc hed on.
Advanced Airbag System components
The front passenger seat in you r vehicle has a lot
of very impo rtant parts of the Advanced Airbag
Sys tem in it. These pa rts in cl ude the capaci tive
passenger detection system, w iring, brac kets,
and more. The control unit monitors the system
on the front passenger seat when the ignition is
switched on and turns the airbag indicator light
on when a malfunct ion in the one of the system
components is detected
¢ page 206. Because
the front passenger seat contains important
pa rts of the Advanced Airbag System, you must
take ca re to prevent it from be ing damaged .
D amage to the seat may p reve nt the Advanced
A irbag System fo r the fron t passenger seat from
doi ng its job in a crash.
The front Advanced Airbag System consists
of the following :
-Cr ash sensors in the front of the vehicle t hat
measure vehicle accelerat ion/dece lerat ion to
Airbag syste m
prov ide information to the Advanced A irbag
System about the severity of the cras h.
- An electronic contro l uni t, with integrated
cras h sensors for front and side impacts . The
control unit "decides" whether to fire the front
airbags based on the information rece ived from
the crash sensors . The control unit also "de­
cides" whether the safety belt pretensioners
should be activated.
- An Advanced A irbag w it h gas generator for the
driver inside the steering wheel hub .
- An Advanced A irbag w ith gas generator inside
the instrument panel for the front passenger.
- A capacit ive passenger detection system under ­
neat h the front passenger seat cover. This sys­
tem meas ures the e lectr ica l capacitance of the
person in the seat. The informat ion registered
is sent cont inuously to the elect ronic contro l
un it to reg ulate dep loymen t of the front Ad­
vance d Airbag on the p assenger side.
- An airbag monitor ing system and ind icator
ligh t
El in the inst rument cl uste r.
- A sensor in each front seat registe rs the d is­
t ance betwee n the respective seat and the
s teer ing whee l o r i nst rument p anel. The infor­
mation registered is sent con tinuous ly to the
elect ronic contro l unit to regu late dep loyment
of the front Advanced Airbags .
- The
PASSENGER AIR BAG OFF ~; lig ht comes
on and stays on in the
headliner¢ page 206,
fig. 164 and tells you when the front Advanced
Airbag on the passenger side has been turned
off.
- A sensor in the safety be lt latch for the driver
and for the front seat passenger that senses
whether that safety be lt is latched or not and
transmits this information to the e lectronic
control un it .
A WARNING
-
Damage to the front passenge r seat can pre­
vent the front airbag from wo rk ing prope rly.
- Imp roper repair or d isassembly of the front
passenger and driver seat will p reve nt the
Advanced A irbag Sys tem from f unct io ni ng
p roperly .
201

Airbag syste m
Front airbag s will not d eploy:
- i f the ig nition is switched off whe n a cr ash oc-
cu rs,
- i n s ide collisions,
- in rear-end collisions,
- in rollovers,
- when the crash decelerat ion measured by the
airbag system is less than the minimum thresh ­
old needed for airbag deployment as registered
by the electronic contro l unit .
The front p assenger airb ag will also not
deploy:
- when the front passenger seat is not occup ied,
- whe n the electrical capac itance measured by
the capacitive passenger detect ion system for
the front passenger seat indicates that the pas­
senger side frontal airbag must be switched off
by the electronic contro l unit (the
PASSENGER
A IR BAG
OFF ~; ligh t~ page 206 and how
they work comes on and stays on) .
.&_ WARNING
Sitting in the wrong position can increase the
risk of serious injury in crashes.
- To reduce the risk of injury when the airbags inflate, the driver and passengers must al­
ways sit in an upright position, must not
lean against or p lace any part of their body
too close to the area where the airbags are located.
- Occupants who are unbelted, out of position
or too close to the a irbag can be seriously
injured by an airbag as it unfolds with great
force in the b link of an
eye <=;> page 195.
.&_ WARNING
A child in a rearward-facing chi ld seat insta l­
led on the front passenger seat will be ser i­
ously inju red and can be killed if the front air­
bag inflates
-even with an Advanced Airbag
System.
- T he inflating a irbag w ill hit the child seat or
infant carrier with great force and will
smash the chi ld seat and child against the
backrest, center armrest, door or roof.
204
-
- Never install a rearward facing chi ld safety
seat on the front passenger seat unless the
PAS SEN GER AIR B AG OFF ~; light comes
on and stays on . If the
PA SSENGER AIR
BAG
OFF ~; light does not come on and stay
on, the inflat ing airbag will hit the chi ld
safety seat or infant carrie r wi th great force
and will smash the child safety seat and
child against the bac krest, door or roof .
Have the airbag system inspected immedi­
ately by your authorized Audi dealer .
.&_ WARNING
Objects between you and the airbag will in­
crease the r isk of injury in a crash by interfer­
ing with the way the airbag unfolds or by be­
ing pushed into you as the airbag inflates.
- Never hold things in your hands or on your lap when the veh icle is in use.
- Never transport items on or in the area of
the front passenger seat. Objects could
move into the area of the front airbags dur­
ing braking or other sudden maneuver and
become dangerous projectiles that can
cause serious persona l injury if the airbags
inflate.
- Never place or attach accesso ries o r othe r
objects (such as cup holders, telephone brackets, large, heavy or bulky ob jects) on
the doo rs, ove r or near the area ma rked
"AIRBAG" on the steering wheel, instru ­
ment panel, seat backrests or between
those areas and yourself. These objects
could cause injury in a crash, especially
when the a irbags inflate.
- Never recl ine the front passenger's seat to
transport objects. Items can also move into
the area of the side a irbag or the front air­
bag during brak ing or in a sudden maneu­
ver. Objects near the airbags can become projecti les and cause injury, part icularly
when the seat is reclined.
- Never p lace or t ransport objects on the
-
front passenger seat. Objects on the front
passenger seat could ca use the capaci tive
sensor in the seat to signal to airbag system
that the seat is occ upied by a person when it
..,

Airbag syste m
the system inspected immediately by your
authorized Aud i dealer. It is possible that
the a irbag will inflate when it is not sup­
posed to, or will not inflate when it should.
A WARNING
If the front airbag inflates, a child without a
child restra int, or in a rearward-facing child
safety seat, or in a forward-facing child re­
st raint that has not been p roperly installed
w ill be seriously injured and can be killed.
- If you must install a rearward-fac ing child
seat on the front passenger seat because of
exceptional c ircumstances and the
PA SSEN­
GER AIR BAG
OFF ,;; light does not appear
and stay on, have the airbag system inspect­
ed by your Audi dealer.
- If, in exceptiona l circumstances, you must
install a forward-facing chi ld restraint on
the front passenger seat, always move the
seat into its rearmost pos ition 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 posit ion .
Make sure that the PASSENGER AIR BAG
OFF ,;; light comes on and stays on a ll the
t ime whenever the ignition is switched on.
A WARNING
If the PASSENGER AIR BAG OFF ~; ligh t does
not go o ut when an adult is s itting on the
front passenger seat after taking the steps described above, have the airbag system in­
spected by your Audi dealer before transport­
ing 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 w ill be turned off, and the
PA SSENGER
AIR BAG
OFF ~; light will stay on.
Repair , care and disposal of the airbags
Parts of the a irbag system are installed at many
d ifferent p laces on your Aud i. Insta lling, remov-
208
ing, servicing or repair ing a part in an area of the
vehicle can damage a part of an airbag system
and prevent that system from work ing properly
i n a coll is ion.
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
du res can increase the risk of personal in jury
and death by p reventing an airbag from de­
p loying when needed or deploy ing an a irbag
unexpectedly:
-
- Never cover, obstruct, or change the steer­
ing wheel ho rn pad or airbag cover or the in­
s trumen t panel or modify them in any way.
- Never attach any objects s uch as c up ho lde rs
or telephone mountings to the surfaces cov­
ering the a irbag un its.
- For cleaning the horn p ad or instr ument
panel, use only a soft, dry doth or one mois­
tened w ith plain water . Solvents or cleaners
could damage the airbag cover or change
the stiffness o r strength of the material so
that the airbag cannot deploy and protect properly.
- Never repair, ad just, or change any parts o f
the airbag system.
- All work on the steering wheel, instrument
panel, front seats or e lectr ica l system ( in­
cluding the installation of a udio eq uipment,
cellular te lephones and CB radios, etc.)
m ust be performed by a qualified techn ician
who has the training and spec ial equipment
necessary.
- For any work on the airbag system, we
strong ly recommend tha t you see you r au­
thori zed A udi dealer or qualified wo rkshop.
- Never modify the front bumper or pa rts of
the vehicle body.
- Always make sure that the side a irbag can
inflate w ithout interfe rence:

Airbag system
Knee airbags
Description of knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants .
Fig. 165 Driver's k nee a irbag
The driver knee airbag is in the instrument panel
underneath the steering
wheel ¢ fig. 165, the
airbag for the passenger is at about the same
height in the instrument panel underneath the
glove compartment.
The knee airbag offers additional protection to
the driver's and passenger's knees and upper and
lower thigh areas and supplements the protec­
tion provided by the safety belts.
If the front airbags deploy, the knee airbags also
deploy in frontal collisions when the deployment
threshold stored in the control unit is met
¢ page 203, 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
posi tion in a frontal collision so that the airbags
can prov ide 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 . T his is why you should
always wear your safety belt, not just because
the law requires yo u to do so ¢
page 187, Gener­
al notes.
210
Remember too, airbags will deploy only once and
on ly 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
abras ions 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 warning light in the instrument clus-
ter
The knee airbag system will not deploy:
-when the ignition is switched off
- in frontal collisions when the decelerat ion
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/
ind icator light is on)
¢ page 14 .
.&, WARNING
-Safety belts and the airbag system can only
provide protection when occupants are in
the proper seating position
¢page 203 .
-If the airbag ind icator light ¢ page 14
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.

Cl co .... N ,....
N .... 0 ,....
Vl co
How knee airbags work
The risk of injury to the leg area can be reduced
by fully inflated knee airbags.
Fig. 166 Inflated airbags protecting in a frontal collision
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 203, fig. 163.
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 lower ex­
tremities.
All of this takes place in the blink of an eye, so
fast that many people don't even realize that the
airbags have deployed. The airbags also inflate
with a great deal of force and it is important for
occupant safety that nothing should be in their
way when they deploy .
Fully inflated airbags in combination with proper­
ly worn safety belts slow down and limit the oc­
cupant 's forward movement and help to reduce
the risk of injury.
Airbag system
Important safety instructions on the knee
airbag system
Airbags are only supplemental restraints . Always
wear safety belts correctly and ride in a proper
seating position .
There is a lot that you and your passenger must
know and do to help the safety belts and airbags
to provide supplemental protection.
_& WARNING
-
An inflating knee airbag can cause serious in-
jury. Wearing safety belts incorrectly and im­ proper seating positions increase the risk of
serious personal injury and death whenever a
vehicle is being used.
-The knee airbag system cannot protect you properly if you are seated too close to any of
the airbag locations. When adjusting their
seat positions, it is important that both the
driver and the front passenger keep their
upper bodies and knees at the following minimum safe distances:
-at least 10 in (25 cm) between the chest
and the steering wheel/instrument panel.
-at least 4 in (10 cm) between the knees and the lower part of the instrument pan­
el.
-The risk of personal injury increases if you
lean forward or to the side, or if the seat is
improperly positioned and you are not wear­
ing your safety belt. The risk increases even
more should the airbag deploy .
- Always make sure that the knee airbag can
inflate without interference. Objects be­
tween you and the airbag can increase the risk of injury in an accident by interfering
with the way the airbag deploys or by being pushed into you as the airbag deploys.
-Never let anybody, especially children or
animals ride in the footwell in front of the
passenger seat. If the airbag deploys, this
can result in serious or fatal injuries .
-Never carry objects of any kind in the foot­
well area in front of the driver's or pas­
senger's seat. Bulky objects (shopping bags, for example) can interfere with or
~
211

Child sa fety
Advanced front airbag system and children
Your veh icle is equipped w ith a front "Advanced
A irbag System" in comp liance w it h United States
F edera l Motor Vehicle Safety Standard ( FMVSS)
208, as well as Canada Motor Vehicle Safety
Standard (CMVSS) 208 as applicable at the time
your vehicle was manufactured.
The Advanced Airbag system in your veh icle has
been certified to meet the " low-risk" require ­
ments for 3- and 6-year old children on the pas­
senger side and small adults on the driver side.
The low risk deployment criteria are intended to
reduce the risk of injury through interaction with
the airbag that can occur, for example, by being
too close to the steering wheel and instrument
panel when the a irbag inflates. In addit ion, the
system has been certified to comply w ith the
" su ppress io n" req uirements of the Safety S tand­
ard, to tu rn off the front airbag for infants up to
12 months who are restrained on the front pas­
senger seat in child restraints that are listed in
the Standard.
E ven tho ugh yo ur vehicle is equipped with an
Ad a
vanced Airbag system, a chi ld should a lways ride
in the seat proper ly restrained for its age and
size. The airbag on the passenger side makes the
front seat a potentially dangerous p lace for a
child to r ide . The front seat is not the safest place
for a child in a forward-facing child safety seat .
It
can be a very dange rous place for a n infant or a
larger child in a rearward-fac ing seat.
The vehicle's Advanced Airbag System has a ca­
pac itive passenger detect ion system in the front
passenger seat cush ion that ca n detect the pres­
ence of a baby or a child in a ch ild restraint sys­
tem on t his seat .
The capac it ive passenger detect ion system regis ­
ters the changes that result in an electr ical field
when a c hild, a child restra int, and a baby blanket
a re on the front passenge r seat. The change in
t he meas ured capacitance due to t he p resence o f
a child, a chi ld restraint, and a baby b lanket on
the front passenger seat is re lated to the chi ld
restraint system resting on the seat . The meas ­
ured capacitance of a ch ild restraint system var-
218
ies depending on the type of system and specific
make and mode l.
The elect rical capac ita nce of the va rious types,
makes, and models of child restra in ts speci fied
by the U.S . National Highway Tra ffic Safety Ad­
ministration (NHTSA) in the relevant safety
standard are stored in the Advanced Airbag Sys ­
tem control unit together with the capacitances
typ ica l of infants and a 1-year old child. When a
c hi ld restraint is used on the front passenger
seat w it h a typical 1 year-old infant, t he Ad­
vanced Airbag System compares the capacitance measured by the capacitive passenge r detect ion
system wi th the data stored in the e lec tronic co n­
tro l unit .
Child restraints and Advanced front airbag
system
Regardless of the ch ild restraint that you use,
make sure that it has been certified to meet Safe­
ty Standards and has been cert ified by its manu ­
factu rer for use w ith an airbag . If in exceptional
c ir cumstances you m ust use it on the front pas­
senger seat, ca refully read all of the information
o n chi ld safety and Advanced Airbags and heed
a ll of th e app licab le WARNINGS . Make certain
that the chi ld and chi ld restraint are correctly
recognized by the capacitive passenger detection
system in the front passenger seat, that the front passenger a irbag is turned off, and that the air­
bag status is always correct ly signa led by the
PASSENGER AIR BAG OFF ~; light.
Many types and models of child restra ints have
been available over the years, new models are in­
troduced regularly incorporating new and im­
proved designs and older models are taken out of
production . Ch ild rest rai nts are not standa rdized .
Child res tra ints of the same type typically have
d iffe rent weights and sizes and diffe re nt "foot ­
pr ints", the size and shape o f th e bo ttom of the
ch ild restraint that sits on the seat, w hen they
are installed on a vehicle seat . These differences
make it virtua lly impossib le to certify comp liance
with the requirements for advanced a irbags w ith
each and every child restra int that has ever been
sold in the past or will be sold over the course of
the useful life of your veh icle .
.,.

0 a, .... N
Tire wear/damage
Fig. 188 Tire profile: treadwear indica­
tor
Tire wear
Check the tires regular ly for wear.
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear.
-Have an authorized Audi dea ler
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel.
If you do not, the tire s and other
vehicle components could wear more quickly.
~ l) Obey any applicable regulations in your 0
[;:; country. 00
Wheels
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread
pattern, which are bars that are 1/16 in (1.6 mm) high and are
spaced evenly around the tire per­ pendicular to the running direc­
tion
c:> fig. 188. The letters "TWI"
or triangles on the tire sidewall indicate the location of the tread­
wear indicators.
The tires have reached the mini ­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones
c:> ..1,,. .
Tire rotation
Rotating the tires regularly is rec­
ommended to ensure the tires
wear evenly. To rotate the tires, install the tires from the rear axle
on the front axle and vice versa.
This w ill allow the tires to have
approximately the same length of
service life.
..,.
253