2017 AUDI TT ROADSTER steering

Airbag syste m
Front airbag s will not deploy:
- if the ignit ion is switched off when a crash oc -
curs,
- in s ide collisions,
- in rear-end collisions,
- in rollovers,
- when the crash deceleration measured by the
airbag system is less than the minimum thresh­
old needed for airbag deployment as registered
by the electronic contro l unit.
Th e front p asse nger airb ag w ill also not
depl oy:
- when the front passenger seat is not occupied,
- when the electrical capacitance 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
AIR B AG OFF ~;
light~ page 208 and how
they work comes on and stays on) .
A 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 place 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 blin k of an eye~
page 197.
A 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 inf lates - even with an Advanced Airbag
System.
- T he inflating a irbag w il l 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.
206
-
- Never install a rearward facing chi ld safety
seat on the front passenger seat unless the
PAS SEN GER AIR BA G OFF ~; light comes
on and stays on . If the
PA SSE NGER 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 with 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 .
A WARNING
Objects between you and the airbag will in­
crease the risk 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 vehicle 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 accessories o r other
objects (such as cup holders, telephone
brackets, large, heavy or bulky objects) 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 inf late.
- Never recline 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 sea t. Objects on the front
p assenger sea t could ca use the capaci tive
sensor in the seat to signal to ai rbag system
that the seat is occ upied by a person when it ..,

Airbag syste m
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.
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
straint that has not been properly 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 ­
G ER AIR BAG OFF,;;
light does not appear
and stay on, have the airbag system inspect­
ed by your Audi dealer.
- If, in exceptional 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 s ure that the PASSENGER AI R BAG
OFF ,;;
light comes on and stays on a ll the
t ime whenever the ignition is switched on.
A WARNING
If the PAS SENGER AIR BAG OFF~; light does
not go out when an adult is s itting on the
front passenger seat afte r 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 BA G OFF ~;
light will stay on.
Repair, care and disposal of the airbags
Parts of the a irbag system are installed at many
d ifferent places on your Aud i. Instal ling, remov-
210
ing, servicing or repairing a part in an area of the
vehicle can damage a part of an airbag system
and prevent that system from 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
dures can increase the risk of personal injury
and death by preventing 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
strumen t panel or modify them in any way.
- Never attach any objects such as cup ho lde rs
or telephone mountings to the surfaces cov­
ering the a irbag un its.
- For cleaning the horn pad 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 st iffness or strength of the material so
that the airbag cannot deploy and protect proper ly.
- Never repair, ad just, or change any parts of
the airbag system.
- All work on the steering wheel, inst rument
panel, front seats or e lectr ica l system (in­
cluding the installation of audio equ ipment,
cellular te lephones and CB radios, etc.)
m ust be perfo rmed 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. 167 Driver's knee airbag
The driver knee airbag is in the instrument panel
underneath the steering wheel¢
fig. 167, 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 205, More important things to know
about front airbags.
In addition to their normal safety function, safe­
ty belts help keep the driver or front passenger in
position in a frontal collision so that the airbags
can 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 . This is why you should
always wear your safety belt, not just because
the law requires you to do so ¢
page 189, Gener­
al notes.
212
Remember too, airbags will deploy on ly 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 co llisions
- 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 205.
-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 wi ll not inflate when it should.

CD
CD
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How knee airbags work
The risk of injury to the leg area can be reduced
by fully inflated kn ee airbags.
Fig . 168 Inflated airbags protecting in a fronta l 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 dep loy, the knee ai rbags also
deploy in fronta l co llisions when the dep loyment
threshold stored in the contro l unit is met.
When the sys tem dep loys, the airbags fill with a
propellan t gas, and inf late between the lowe r
part of the instrument panel and the driver and
the lower pa rt of the instrument panel and the
front passenger ¢
page 205, fig. 165.
Although they are not a soft pi llow, they can
"c ushion" the impact and in this way they can
he lp to reduce the risk of injury to the lower ex­
tremities.
All of this ta kes place in t he b lin k of an eye, so
fast that many people don't even realize that the
airbags have dep loyed . 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 .
F u lly 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 r isk of injury.
Airb ag sys tem
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 yo ur passenger must
know and do to help the safety belts and ai rbags
to provide supp lemental protect ion.
A WARNING ~
An inflat ing knee a irbag can cause se rious in-
jury. Wearing safety be lts 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 yo u
proper ly if yo u are seated too close to any of
the airbag locations. When adjusting t heir
seat pos itions, it is important that both the
driver and the front passenger keep their
uppe r bodies and knees at the fo llow ing
m inim um safe d istan ces:
- at least 10 in (25 cm) between the chest
and t he steering wheel/instrument panel.
- at least 4 in (10 cm) between the knees
and t he lower part of the instrument pan­
el.
- The risk of personal inj ury 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 a irbag can
inflate w ithout interference. Objects be­
tween you and the airbag can increase the risk of injury in an accident by inte rfe ring
wit h the way the airbag deploys or by bei ng
pushed into yo u as the ai rbag deploys.
- Never let anybody, especially children or
anima ls r ide in the footwell in front of the
passenger seat. If the airbag deploys, this
can result in serious or fatal i njuries .
- Never carry objects of any kind in the foot­
well a rea in front of the driver's or pas­
senger's seat. Bulky objects (shopp ing
bags, fo r example) ca n in terfere with or
~
213

Child safety
Advanced front airbag system and children
Your vehicle is equipped with a front "Advanced
Airbag System" in compliance with United States Federal Motor Vehicle Safety Standard (FMVSS)
208 as applicable at the time your vehicle was
manufactured.
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 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 airbag inflates. In addition, the
system has been certified to comply with the
"suppression" requirements of the Safety Stand­
ard, to turn 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 .
Even though your vehicle is equipped with an Ad­
vanced Airbag system, a child should always ride
in the seat properly 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 place for an infant or a larger child in a rearward-facing seat .
The vehicle's Advanced Airbag System has a ca­ pacitive passenger detection system in the front
passenger seat cushion that can detect the pres ­
ence of a baby or a child in a child restraint sys­
tem on this seat.
The capacitive passenger detection system regis­
ters the changes that result in an electrical field
when a ch ild, a child restraint, and a baby blanket
are on the front passenger seat. The change in
the measured capacitance due to the presence of
a child, a child restraint, and a baby blanket on
the front passenger seat is related to the child
restraint system resting on the seat. The meas­
ured capacitance of a child restraint system var­ ies depending on the type of system and specific
make and model.
220
The electrical capacitance of the various types, makes, and models of child restraints specified
by the U.5 .National Highway Traffic Safety Ad­
ministration (NHTSA) in the relevant safety
standard are stored in the Advanced Airbag Sys­
tem control unit together with the capacitances
typical of infants and a 1-year old child . When a
child restraint is used on the front passenger
seat with a typical 1 year-old infant, the Ad­
vanced Airbag System compares the capacitance
measured by the capacitive passenger detection
system with the data stored in the electronic con­
trol unit.
Child restraints and Advanced front airbag
system
Regardless of the child restraint that you use,
make sure that it has been certified to meet Unit­
ed States Federal Motor Vehicle Safety Standards
and has been certified by its manufacturer for
use with an airbag. If in exceptional circumstan­
ces you must use it on the front passenger seat,
carefully read all of the information on child safe­
ty and Advanced Airbags and heed all of the ap­
plicable WARNINGS. Make certain that the child
and child restraint are correctly recognized by the
capacitive passenger detection system in the
front passenger seat, that the front passenger
airbag is turned off, and that the airbag status is
always correctly signaled by the
PASSENGER AIR
BAG OFF~;
light.
Many types and models of child restraints 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. Child restraints are not standardized.
Child restraints of the same type typically have
different weights and sizes and different "foot­
prints", the size and shape of the bottom of the
child restraint that sits on the seat, when they
are installed on a vehicle seat. These differences
make it virtually impossible to certify compliance
with the requirements for advanced airbags with each and every child restraint that has ever been
sold in the past or will be sold over the course of
the useful life of your vehicle. ..,.

a, a, ... N
" N ... 0
" V, a:,
-Have the wheels rebalanced if an
imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear
more quickly.
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¢
fig. 189. 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 tread wear
indicators. Replace the tires with
new ones ¢.&.
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 will allow the tires to have
l) Obey any applicable regulations in your
country.
Wheels
approximately the same length of
service life.
For unidirectional tires, make
sure the tires are installed accord­
ing to the running direction indi­
cated on the tire sidewall
¢ page 278.
Hidden damage
Damage to tires and rims can of­
ten occur in locations that are hidden. Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage.
Reduce your speed immediately.
Check the tires for damage. If no
damage is visible from the out­
side, drive slowly and carefully to
the nearest authorized Audi deal­
er or authorized Audi Service Fa­ cility to have the vehicle inspect­
ed.
.&_ WARNING
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety.
This can especially have a nega­
tive effect on handling, on the risk aquaplaning when driving
through water, when driving ..
255

Wheels
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
proper ly .
If the Tire Pressure Monitoring System
indicator appears
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Using the ABS sensors, the tire pressure monitor ­
ing system compares the tire tread circumfer­
ence and vibration characteristics of the individu­
al tires. If the pressure changes in one or more
tires, this is indicated in the Infotainment system
disp lay with an indicator light
RR and a message.
If only one tire is affected , the location of that
tire will be indicated.
The tire pressures must be stored in the Infotain­
ment system again each time the pressures
change (switching between partial and full load pressure) or after changing or replacing a tire on
your vehicle ¢
page 265 . The tire pressure moni­
toring system only monitors the tire pressure you
have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
¢ page 256, fig.191.
Tire tread circumference and vibration character­
istics can change and cause a tire pressure warn­
ing if:
- the tire pressure in one or more tires is too low.
- the tire has structural damage .
- the tire was replaced or the tire pressure was
changed and it was not stored¢
page 265.
-the spare tire* is installed.
Indicator lights
RR -Loss of pressure in at least one tire ¢ ,& .
Check the tires and replace o r repair if necessary.
Check/correct the p ressures of a ll four tires and
store the pressure again in the Infotainment sys­
tem ¢
page 265.
264
mm (T ire Pressure Monitoring System) Tire
pressure: malfunction! See owner's manual -
If
mm appears after switching on the ignit ion or
while driving and then the indicator light
RR in
the instrument cluster also starts to blink for
about one minute and then stays on permanent­ ly, there is a system malfunction. Try to store the
correct tire pressures¢
page 265. If the indica­
tor light does turn off or turns on again after a
short period of time , drive to an authorized A udi
dealer or authorized Audi Service Facility immedi ­
ate ly to have the ma lfunction corrected.
_& WARNING
-If the tire pressure indicator appears in the
disp lay, reduce your speed immediately and
avoid any hard steering or brak ing maneu­
vers. Stop as soon as poss ible and check the
tires and their pressure .
- The driver is responsible for maintain ing the
correct tire pressures . You must check the
tire pressures regularly .
- Under certain cond it ions (such as a sporty
driving style, w inter condit ions or unpaved
roads), the pressure monitor indicator may
be delayed.
- Do not use run-flat tires on your vehicle . Us­
ing them when not perm itted can lead to
vehicle damage or accidents.
(D Tips
- The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function.
- Us ing snow chains may result in a system
ma lfunction.
- The tires w ith the identification "AO"
¢
page 253 have been matched w ith your
Audi t ire pressure monitoring system. We
recommend that you use these tires.

Fuses and bulbs
Interior fuse assignment
Fig. 208 Vehicle inter ior: fuse assignme nt
No. Equipment
Fl Power top control modu
le (Roadster)
F2 Power top control module (Roadster)
F3 ESC control module
F4 Central computer processor (MIB-2)
FS Gateway
F6 Anti-theft alarm system Climate control system, selector lever (au-
F7 tomatic transmission), parking heater,
rear window heater relay coil
Diagnos is, electrical parking brake switch,
F8 light swi tch, rain/light sensor, interior
lighting
F9 Steering column switch module
Fl0 Display
F ll Haldex clutch
F12 MMI area
F 13 Adaptive dampers control module
F14 Climate control system blower
FlS Electronic steering co lumn lock
F16 MMI components, safety be
lt microphone
(Roadster)
282
No . Equipment
F17 Instrument cluster
F18 Rearview camera
F19 Convenience key system control module
F20 Power lumbar support adjustment
F22 Front passenger's side neck heating (Road-
ster)
F23 R
ig ht exterior lighting, on-board compute r
(right)
F 25 Driver's s
ide door (for example power win-
dows)
F26 Seat heating
F28 AMI H igh med ia port
F29 On-board computer
F31 Left on-board computer
F32 Driver assistance systems
F33 Airbag
Socket relay, interior sound, back-up light
F34 switch, temperature sensor, oil level sen-
sor
Diagnosis, headlight range control system,
F35 air quality sensor, automatic dimming
rearview mirror
F36 Right cornering light/ r ight LED-h eadlight
F37 Left cornering light/ left LED-headlight
F38 E
ng ine control module, ESC control mod-
ul e
F39 Front passenger's side door (for example
power windows)
F40 Cigarette lighter, sockets
F41 SCR relay and delivery unit
F42 Central locking area
F43 On-board computer
F45 Power adjustable driver's side seat
F46 Driver's side neck heat ing (Roadster)
F49 Starter, clutch sensor
FS0 ESC valves
F53 Rear window defogger
The power seats* are protected v ia
circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.