2015 AUDI TT ROADSTER sensor

Audi magnetic ride
Applies to vehicles: with magnetic ride
Damping can be adjusted to the driver's pref­
erence and it adapts automatically to the cur­
rent driving situation.
Fig. 87 Ce nter console : Switc h for Au di magnet ic ride
• Press the sw itch Q fig . 87 to tu rn sport set-
t ing on or off.
Aud i magnetic ride is an electronically con­
trolled damping system. This chassis system
assists the dr iver by adapting to the particular
situation through imperceptible control proc­
esses. The
da mping provides individua l modu­
lation of damping forces. For example, with
damping characteristics set to provide greater
comfort, damping is set somewhat harder for
a brief period only
as required, when rounding
a curve and when braking.
St andard setti ng
Select the standard sett ing if you prefer a sus­
pension setting emphasizing comfort .
Sport setting
Select the sport setting if you prefer a sporty
suspens ion setting . The LED in the switch
R
comes on to indicate sport setting.
@ T ips
The warning/indicator light R in the in­
strument cluster comes on in the event of
a ma lfunction. Drive to the closest author ­
ized Audi dealer as soon as possible and
have the malfunction repaired.
On th e road 7 9
Sport mode
Applies to vehicles: wit h Sport button
Fig . 88 Butto n in the center console
.,. To switch sport mode on, press the button
in the center console . The indicator light
turns on.
• To switch sport mode off, press the button
in the center console again. The indicator
light turns on .
A more agile and sporty driving style is possi­
ble when driving the vehicle in "sport mode".
T his mode affects throttle response and the
sound of the engine and the damping charac­
teristics of the Audi magnetic ride for dynamic
suspension tuning .
(1} Tips
If there is a malfunction in the retractable
rear spoiler* or the Audi magnetic ride*, it
may not be poss ible to activate sport
mode.
Acoustic parking system
Rear acoustic park assist
Applies to vehicles: with 4-channe l acoustic park assist
Acoustic park assist gives a warning about
obstacles behind the vehicle.
D es cription
The rear acoustic park assist (4-channel
acoustic park assist) determines the distance
of the vehicle from an obstacle using ultra­
sonic sensors. The sensors are in the rear
bumper. The volume and the pitch of the

80 On the road
chimes can be adjusted through the menu dis­
p lay
~ page 24 .
The range at which the sensors start to meas­
ure is
a b ou t:
To the side 2 feet (0.60 m)
Center rea r 5 feet (1.60 m)
Activation
The parking assist
is activated when r ev erse
ge ar is engaged . A b rief tone confi rms that
the system is activated .
Backing up
Distance warning when back ing up starts
when an obstacle is detected in the range of
the park assist system . As the d istance de­
creases, the time i nterva l between the audible
tones becomes shorter.
When the d istance is less than 1 foot (0.30
m), the tone becomes cont inuous . At this
poi nt you should stop backing up.
Please note that low objects already signalled
by a warning can disappear from the system 's
detection range and w ill not continue to be
signalled.
Potenti al malfunction s
If a warning buz zer sounds for a few seconds
when the ignition is sw itched on, there is a
system malfunction w ith the acoustic park as­
sist . If the malfunction persists unti l the igni­
tion is switched off , there will be no acoustic
warn ing at the next attempt to activate the
system . Have the problem corrected.
There is no confirmation tone when reverse
gear is engaged if there is a system ma lfunc­
tion .
For the park ing ass ist to operate, the sensors
must be kept clean and free of ice.
_& WARNING
- Sensors have blind spots in which objects
cannot be detected . Pay special attention
to sma ll children and animals. They can- not a
lways be detected by the sensors -
danger of an accident!
- The parking assist cannot rep lace the
driver's attention. The driver alone is re­
sponsible for parking and similar driving maneuvers. Always watch where you are
driving.
(D Note
Low obstacles already signa lled by a warn­
i ng can d isappear from the system's detec­
tion range as they are approached and w ill
not continue to be signalled. Objects such
as barrier chains, trailer draw bars, th in
painted vertical poles, o r fences may not
be detected by the system - risk of dam­
age .
@ Tips
For the parking assist to operate, the sen­
sors must be kept clean and free of snow
and ice.

114 Airbag sys te m
- a small adu lt or teenager is on the front pas­
senger seat
- 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.
I f the front passenger airbag deploys, the
Federal Standard requires the airbag to meet
the " low risk" deployment criteria to help re­
duce the risk of in jury through interaction
with the airbag . "Low risk" deployment occurs
in those cr ashes that take place at lower de­
celerations as defined in the electronic control un it
Q page 118 .
Always rem ember : Please be sure to read the
impor tant informa tion in the sections tha t
follow and be sure to heed all of the WARN ­
INGS .
A WARNING
To reduce the r isk of injury when an airbag
inf lates , a lways wear safety belts prope rly.
- If you are unrestrained, lean ing forward,
sitting sideways or out of position in any
way, your risk of in jury is much higher.
- You w ill also receive serious inju ries and
cou ld even be killed if you are up against
the a irbag or too close to it whe n it in­
flates - even with an Advanced Airbag
Q page 108.
A WARNING
-
A child in a rearward-facing child safety
seat insta lled on the front passenger seat
w ill be seriously injured and can be k illed if
the front a irbag inflates - even with an Ad­
vanced Airbag System .
- Although the Advanced A irbag System in
your vehicle is designed to turn off the
front a irbag when a rearward -fac ing
child restraint has been installed on the
front passenger seat, nobody can abso­ l u te ly guarantee that deployment is im ­
poss ible in a ll conce ivable situations th at
may happen d uring the useful life of your
vehicle. -
The inflating airbag will h it the ch ild
safety seat or infant carrier with great
force and will smash the child safety seat and child aga inst the backrest, door, or
roof.
- If you must install a rearward fac ing
child safety seat on the front passenger
seat because of exceptiona l circumstan­
ces and t he
PASSENGER AIR BAG OFF
light does not come on and s tay on have
the airbag system inspecte d by your Audi
dealer.
A WARNING
--=
If, in exceptiona l circumstances, you m ust
i nstall 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
wit h a passenger front and s ide a irbag.
- Never p ut the fo rward-facing chi ld re ­
straint up against or very near the instru­
ment panel.
- Always move the passenger seat into its
rea rmost pos ition in the seat's fore and
aft ad justment range, as far away from
the airbag as possible, before install ing
the forward-fac ing ch ild restra int . The
backrest must be ad justed to an up right
position.
- Make sure that the
PASSENGER AIR BAG
OFF
li ght comes on a nd stays o n all the
time wheneve r the ignit ion is switched
on .
Advanced Airbag System components
The front passenge r seat in yo ur vehicle has a
lot of very important parts of the Advanced
Airbag System in it . These parts i nclude the
weight-sensing mat, sensors, wiring, brack­ ets, and more. The funct ion of the system in
the front passenger seat is checked by the electron ic control unit when the ignition is on .
The cont rol unit monito rs the Advanced A ir­
bag System and turns the airbag indicato r
li ght on w hen a malfun ct io n in t he system

components is detected . The function of the
airbag indicator light is described in greater
deta il below . Because the front passenger
seat contains important parts of the Ad­
vanced Airbag System, you must take care to
prevent it from being damaged. Damage to
the seat may prevent the Advanced A irbag for
the front passenger seat from doing its job in
a crash.
The f ront Ad vanc ed Airb ag S ystem
consists of the following:
- Crash sensors in the front of the veh icle that
measu re ve hicle acceleration/deceleration
to provide information to the Advanced Air­
bag System about the severity of the crash.
- An electronic control unit, with integrated
c rash sensors for front and side impacts.
T he contro l unit "decides" whether to fire
the front airbags based on the information
received from the crash sensors . The control
unit also "decides" whether the safety belt
pretensioners should be activated.
- An Advanced Airbag with gas generator for
the driver ins ide the steer ing wheel hub.
- An Advanced Airbag with gas generator in­
side the instr ument panel for the front pas­
senger.
- A weight-sensing mat under the upholstery
padding of the front passenger seat cushion
that measures the total weight on the seat.
The information registered is sent continu­
ously to the electron ic control unit to regu­
late dep loyment of the front Advanced Air­
bag on the passenger side.
- An a irbag monitoring system and indicator
li ght in the instrument cluster
¢page 118.
-The PASSENGER AIR BAG OFF light comes
on and stays on in the center of the instru­
ment pane l
¢page 119, fig. 113 and te lls
you when the front Adv anced Airbag on the
passenge r side has been turned off.
- A senso r below the safety belt latch for the
front seat passenger to me asure the tension
on the safety belt . The tens ion on the safety
belt and the weight registered by the
weight-sensing mat help the control unit
"dec ide" whether the front airbag for the
Airbag system 11 5
front passenger seat should be turned off or
not
¢ page 109, Child restraints on the
front seat -some important things to
know.
- A sensor in the safety belt latch for the driv­
er and for the front seat passenger that
senses whether that safety belt is latched or
not and transmits this information to the
electronic control unit .
.&, WARNING
Damage to the front passenger seat can
prevent the front airbag from wor king
properly.
- Improper repai r or d isassembly of the
front passenge r and dr iver seat will pre­
vent the Advanced Airbag System from
functioning properly.
- Repairs to the front passenge r seat must
be pe rformed by qualified and p roperly
trained workshop personne l.
- Never remove the front passenger o r
driver seat from the vehicle .
- Never remove the upholstery from the
front passenger seat.
- Neve r d isassemble o r remove parts from
the seat or disconnec t wires from it.
- Never carry sharp objects in you r pockets
or place t hem on the seat. If the weight­
sens ing ma t in the passenge r seat is
punctured it cannot work properly .
- Neve r carry things on you r lap or carry
objects on the passenger seat. Such
items can increase the weight registered
by the weight-sensing mat and send the
wrong information to the airbag co ntrol
un it.
- Never store items under the front pas­
senger seat. Parts o f the Advanced Air­
bag System under the passenger seat
could be damaged, preventing them and
the airbag system from working proper­ ly.
- Never p lace seat covers or rep lacement
upholstery that have not been specifica l­
ly approved by Audi on the front seats.
- Seat covers can prevent the Advanced
Airbag System from recognizing chi ld
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

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.
-

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