2011 AUDI R8 SPYDER sensor

Active rollover protection system
Function
The active rollover protect ion system helps
protect vehicle occupants in the event of a
rollov er.
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Fig. 108 Rollbar depl oyment range
Fig. 109 Rollbar dep loyed
The active rollover protection system consists
of:
- two rollbars
- the safety belts with belt tensioners
- the windshield frame
- the rollover sensors .
The active rollover protection system provides
additional safety in the event of a rollover.
W ith in mill iseconds, sensors deploy two roll­
bars located behind the headrests
¢fig . 109 .
The rollbars, reinforced windshield frame and
belt tensioners help protect vehicle occupants
in the event of a rollover.
T he rollover protection system functions
when the convertible top is both open and
closed.
Driving Safely 107
A WARNING
Do not use the area behind the headrests
¢ fig. 108 as a storage area . This is the
area where the rollbars deploy .
If the roll­
over protection system is triggered, ob­
jects placed there can be propelled
through the vehicle and make it more diffi­
cult for the rollbars to deploy. This increas­
es the risk for serious or life -threatening
in juries.
When is rollover protection deployed?
Rollover protection deploys in a collision or
rollover .
Depending on the collision, sensors through­
out the vehicle and the control module trigge r
the rollover system to deploy.
For safety reasons, rollover protection also de­
ploys during front , side and rear collisions
above a certa in level of severity.
Retracting rollover protection
Fig. 110 Dep loyed roll bar w ith re lease loop
Fig . 1 11 Dep loyed rollb ar with conve rtible top fram e
facing upwar d
If the rollbars deployed but the vehicle was
not involved in a collision or rollover, you can .,.

~ Never permit anyone to assume an incorrect
sitting position in the vehicle while traveling
¢A .
A WARNING
Improperly worn safety belts increase the
risk of serious personal injury and death
whenever a vehicle is being used .
- Always make sure that all vehicle occu­
pants are correctly restrained and stay in
a correct seating position whenever the
vehicle is being used .
- Always read and heed all WARNINGS and other important information
¢page 110.
Safety belt preten­
sioners
How safety belt pretensioners work
In front, side and rear end collisions and in a
rollover above a particular severity, safety
belts in use are tensioned automatically.
The safety belts for the front seating positions
are equipped with safety belt pretensioners.
The system is activated by sensors in front,
side and rear-end collisions and in a rollover of
great severity . This tightens the belt and takes
up be lt slack ¢&.
in Service and disposal of
safety belt pretensioner on page 115.
Taking
up the slack helps to reduce forward occupant
movement during a collision .
(D Tips
The safety belt pretensioner can only be
activated once.
- In minor frontal and side collisions in
,
rear-end collisions and in accidents in­
volving very little impact force, the safe­
ty belt pretensioners are not activated.
- When the safety be lt pretensioner is ac­
tivated, a fine dust is released . This is
normal and is not caused by a fire in the
vehicle.
- The relevant safety requirements must
be observed when the vehicle or compo-
Safety belts 115
nents of the system are scrapped. An au­
thorized Audi dealer is familiar with
these regulations and will be pleased to
pass on the information to you.
- Be sure to observe all safety, environ­
mental and other regulations if the vehi­
cle or individual parts of the system, par­
ticularly the safety belt or airbag, are to
be disposed . We recommend you have
your authorized Audi dealer perform this
service for you.
Service and disposal of safety belt
pretensioner
The safety belt pretensioners are parts of the
safety belts on your Audi. Installing, remov­
ing, servicing or repairing of be lt pretension­
ers can damage the safe ty belt system and
prevent it from working correctly in a colli­
sion .
There are some important things you have to know to make sure that the effectiveness of
the system will not be impaired and that dis­
carded components do not cause injury or pol­
lute the environment.
A WARNING
Improper care, servicing and repair proce­
dures can increase the risk of personal in­
jury and death by preventing a safety belt
pretensioner from activating when needed
or activating it unexpectedly :
- The belt pretensioner system can be acti­
vated only once. If belt pretensioners
have been activated, the system must be
replaced.
- Never repair, adjust, or change any parts
of the safety belt system.
- Safety belt systems including safety belt
pretensioners cannot be repaired. Spe­
cial procedures are required for removal,
installation and disposal of this system.
- For any work on the safety be lt system,
we strongly recommend that you see
your authorized Audi dealer or qualified
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124 Airbag sys te m
- Always move the passenger seat into its
rearmost position in the seat's fore and
aft adjustment range, as far away from
the a irbag as poss ible, before insta lling
the forward-facing child restraint. The backrest must be adjusted to an upr ight
posit io n.
- Make sure that the
PASSENGER AIR BAG
OFF
light comes on and stays on all the
t ime w henever the ignition is switched
on.
Advanced Airbag System components
The fron t passenger sea t in your vehicle h as a
lot of very important par ts of the Advanced
Airbag System in it. These parts include t he
weight -sensing mat, sensors, wiring, brack­
ets, and more. The function of the system in
the front passenger seat is checked by the
e lectronic control u nit when the ignit ion is on.
The control unit mon itors the Advanced Air­
bag System and turns the airbag indicator
l ight on when a ma lfunction in t he system
components is detected. The func tion of the
a ir bag ind icator light is described in greater
detai l be low . Because the fro nt passenger
seat contains important parts of the Ad­
vanced A irbag System, you m ust take care to
prevent it from be ing damaged. Damage to
the seat may prevent the Advanced Airbag for
the front passenger seat from doing its job in
a crash .
The front Advanced Airb ag System
consists of the following:
- Crash sensors in the front of the veh icle that
measure veh icle acceleration/decele ration
to provide information to the Advanced Air­
bag System abou t the seve rity of the crash.
- An e lectron ic co ntrol unit, with integ rated
c rash sensors for front and side impacts .
T he cont rol unit "dec ides " w het her to fire
the front airbags based on the information
received from the crash senso rs . The contro l
unit a lso "decides" whethe r the safety be lt
pretensioners should be activated . -
An Advanced Ai rbag w ith gas generator for
the driver inside the steering w heel hub.
- An Advanced A irbag w ith gas gene rato r in­
side the inst rument panel for the front pas­
senger.
- A we ight -sensing mat unde r th e upho lstery
pa dding of the front passenger seat cushion
that measures the total weight on the seat .
The informat ion registered is sent continu­
ously to the electronic control unit to regu­ late deployment of the front Advanced Air­
bag on the passenger side .
- An airbag monitoring sys tem and indicator
light in t he instrument cluster
c:> page 128 .
-The PASSENGER AIR BAG OFF light comes
on and stays on in the center of the instru­
ment panel
c::> page 128, fig. 125 and tells
you when the front Advanced Airbag on the passe nger side has been tu rned off.
- A sensor below the safety be lt latch fo r the
front seat passenger to measure the t ension
on t he safety be lt. T he tension o n the safety
be lt a nd the weight regis tered by the
weigh t-sensing mat he lp the cont rol uni t
"decide" whether the front airbag for the
front passenger seat should be turned off or
not
c:> page 119, 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 t hat safety belt is latched or
not and transmits this information to the
electronic control un it .
_&. WARNING
D amage to the fron t passenger seat can
p revent t he fro nt airbag from wor king
proper ly.
- I mp roper repai r or d isassembly of the
front passenge r and dr ive r sea t w ill pre­
vent the Advanced Air bag System from
functioning p roperly.
- Repairs to the front passenge r seat m ust
be pe rformed by qualifie d and p roperly
trained workshop person nel.
- Never remove the front passenger o r
d river seat from t he vehicle .
-

-Never remove the upholstery from the
front passenger seat.
- Never disassemble or remove parts from
the seat or disconnect wires from it.
- Never carry sharp objects in your pockets
or place them on the seat. If the weight­
sensing mat in the passenger seat is
punctured it cannot work properly.
- Never carry things on your 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 control
unit.
- Never store items under the front pas­
senger seat. Parts of the Advanced Air­
bag System under the passenger seat
could be damaged, preventing them and
the airbag system from working proper­ ly.
- Never place seat covers or replacement
upholstery that have not been specifical­
ly approved by Audi on the front seats.
- Seat covers can prevent the Advanced
Airbag System from recognizing child re­
straints or occupants on the front pas­
senger seat and prevent the side airbag in the seat backrest from deploying prop­
erly.
- Never use cushions, pillows, blankets or
similar items on the front passenger
seat. The additional padding will prevent
the weight-sensing mat in the seat from
accurately registering the child restraint
or person on the seat and prevent the
Advanced Airbag System from function­ ing properly.
- If you must use a child restraint on the
front passenger seat and the child re­
straint manufacturer 's instructions re­
quire the use of a towel, foam cushion or
something else to properly position the
child restraint, make certain that the
PASSENGER AIR BAG OFF light comes
on and stays on whenever the child re­
straint is installed on the front passen­
ger seat .
Airbag system 125
-If the PASSENGER AIR BAG OFF light
does not come on and stay on, the inflat­
ing airbag will hit the child safety seat or
infant carrier with great force and will
smash the child safety seat and child
against the backrest, door or roof. Have
the airbag system inspected immediately by your authorized Audi dealer .
How the Advanced Airbag System
components work together
The front Advanced Airbag System and the
side airbags supplement the protection of­
fered by the front three-point safety belts
with pretensioners and load limiters and the
adjustable head restraints to help reduce the
risk of injury in a wide range of accident and
crash situations. Be sure to read the impor­
tant information about safety and heed the
WARNINGS in this chapter.
Deployment of the Adv a need Airbag System
and the activation of the safety belt preten­
sioners depend on the deceleration measured
by the crash sensors and registered by the
electronic control unit. Crash severity depends
on speed and deceleration as well as the mass
and stiffness of the vehicle or object involved in the crash.
When the electronic control unit registers a
low severity crash and the safety belt is being
used, the airbag will not deploy. If the safety
belt is not being used, the first stage deploys,
followed by the second stage after a much lat­ er time in the crash sequence.
If the electronic control 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 being
used or not . In higher severity crashes as reg­
istered by the electronic control unit, both the
first and second stages deploy almost at the
same time .
On the passenger side, regardless of safety
belt use, the airbag will be turned off if the
weight on the passenger seat is less than the
IJII,-
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128 Airbag system
Monitoring the
Advanced Airbag
System
I Airbag monitoring indicator light
Two separate indicators monitor the function
of the Advanced Airbag System: the airbag
monitoring indicator light and the
PASSEN­
GER AIR BAG
OFF light.
The Advanced Airbag System (includ ing the
electronic control unit, sensor circuits and sys­
tem wiring) is monitored continuously to
make sure that it is functioning properly
whenever the ignit ion is on. Each time you
turn on the ignition, the airbag monitoring in­
dicator light
I will come on for a few seconds
(self diagnostics) .
The system must be inspected when the
indicator light
I :
- does not come on when the ignit ion is
switched on,
- does not go out a few seconds after you
have switched on the ignition, or
- comes on while driving.
If an airbag system malfunction is detected,
the indicator light will first start flashing to
catch the driver's attention and then stay on
continuously to serve as a constant reminder
to have the system inspected immediately.
If a malfunction occurs that turns the front
a ir bag on the passenger side off, the
PASSEN­
GER AIR BAG
OFF light will come on and stay
on whenever the ignition is on.
_& 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 there may be something
wrong with the Advanced Airbag System.
It is possible that the airbag will inflate
when it is not supposed to, or will not in­
flate when it should.
-
- Have the airbag system inspected imme­
diately by your authorized Audi dea ler.
PASSENGER AIR BAG OFF light
Fig. 125 Sect ion from the instrument panel: PASSEN ­
GER AIR BAG O FF light
The PASSENGER AIR BAG OFF light is located
in the center of the instrument panel
<=> fig . 125.
The
PASSENGER AIR BAG OFF light will come
on and stay on to tell you when the front Ad­
vanced Airbag on the passenger s ide has been
turned off by the electron ic control unit. Each
t ime you turn on the ignition, the
PASSEN­
GER AIR BAG
OFF light will flash for a few
seconds and:
- w ill stay on if the front passenger seat is not
occupied,
- will stay on if there is a small child or child
restraint on the front passenger seat,
- will go out if the front passenger seat is oc­
cupied by an adult as registered by the
weight-sensing mat.
The
PASSENGER AIR BAG OFF light must
come on and stay on
if the ignition 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-facing chi ld restraint 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
bined weight of a typical 1 year-o ld restrain­
ed in one of the rear-facing or forward-fac-
ing infant restraints listed in Federal Motor ..,.

Vehicle Safety Standard 208 with which the
Advanced Airbag System in your vehicle was
certified.
I f the front passenger seat is not occ upied,
the front airbag will not deploy, and the
PA S­
SENGER A IR BAG OF F
light will stay on. Nev­
er insta ll a rearward-fac ing ch ild restra int on
the front passenger seat
c:> page 119, Child
restraints on the front seat -some important
things to know
and c:> page 138, Child Safety.
If the PASSENGER AIR BAG OFF light c om es
on
when one of the conditions listed above is
met, be sure to check the light regularly to
make certa in that the
PA SS ENG ER AIR BAG
OFF
light stays on cont inuously whenever the
ign it ion is on. If the
PA SSENGER AIR BA G
OFF
l ight does not appear on and stay on a ll
the t ime, stop as soon as it is safe to do so
and
- react ivate the system by turning the ignition
off and then tu rning it on again;
- remove and reinstall the chi ld restraint .
Make sure that the child restraint is properly
insta lled and that the safety be lt fo r the
front passenger seat has been correct ly
ro uted through the child restraint as descri­
bed in the chi ld restraint man ufacturer's in ­
structions;
- make su re 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
t h at the sensor below the safety belt latch
on the seat can do its job
c:> page 146;
- make sure that th ings that may increase the
weight of the ch ild 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 b locked. Shake the safety belt
latch on the front passenge r seatbac k and
forth;
- If a st rap or tether is being used to tie the
c hild safety seat to t he fro nt passenger
seat, make s ure t hat i t is no t so tight that it
A irbag system 129
causes the weight -sensing mat to measure
more weight than is act ually on the seat.
If th e PASSENGER AIR BAG OFF li ght s till
d oes not come on
and does not stay on con ­
tin uous ly (when the ignition is switched on),
- take the child rest ra int off the front passen-
ge r seat and have the a irb ag sys tem inspect ­
ed by yo ur authorized Aud i dealer. Do not
transport children witho ut a c hil d safety
seat.
T he
PASSENGER AIR BAG OFF lig ht sho uld
NOT come on when the ignit ion is on and an
adult is s itting in a proper seating position on
the front passenger seat . If the
PASSENGER
AIR BAG OFF
light comes on and stays on or
flashes for about 5 seconds wh ile driving, un­
der these c ircumstances, make sure that:
- the adult on the front passenger seat is
properly seated on the center of the seat
cushion with his or her back up aga inst the
backrest and the backrest is not recl ined
c:> page 100, Proper occupant seating posi­
tions,
- the adult is not tak ing weight off the seat by
holding on to the passenger assist handle
above the front passenger door or support­
ing their weight on the armrest,
- the safety belt is be ing properly worn and
that there is not a lot of s lack in the safety
be lt webbing,
- accesso ry seat covers or cushions or other
things that may cause an inco rrect reading
or impression on the weight-sensing mat
under t he upho ls tery of the sea t have been
removed from the front passenger sea t,
- a safety belt extender has not been left in
the sa fe ty belt latch for the fron t passenger
seat.
In add ition to the
PASSENGER AIR BAG OFF
l igh t in the center of the instrument panel,
the message
PASSENGER AIR BAG OFF or
PASSENGER AIR BAG ON w ill briefly appear
i n the instrument cluster disp lay. This is to in­
form the dr iver of the current front passenger
airbag status.
•
•

132 Airbag system
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced Airbag Sys ­
tem performs in a crash. For example, using
tire-r im combinations not approved by Aud i,
lowering the vehicle, changing the stiffness of
the suspension, including the sp rings, suspen­
sion struts, shock absorbe rs etc. can change
the forces that are measured by the a irbag
sensors a nd sent to the electron ic control
un it. Some suspension changes ca n, for exam­
p le, increase the force levels measured by the
sensors and make the airbag system deploy in
crashes in which it would not dep loy if the
changes had not been made . Other kinds of
changes may reduce the force levels meas­ ured by the sensors and prevent the airbag
from deploying when it should .
The sensors in the safety belt buckle for the driver and front passenger seat tell the elec­
tronic con trol module if the safety bel t is
latched or not .
If the safety belt is being used,
the front a irbag will deploy at a slightly high­
e r rate of vehicle deceleration than if the safe­
ty belt i s not being used. Therefo re, i n a par­
ticular co llision, it is poss ible that an a irbag
will not deploy at a seati ng position where the
safety be lt is being used but will inflate at the
position where the safety belt is not being
used. It is important that nothing interfere
with the safety belt buckles so that the sen­
sors can send the correct information about
safety belt use to the electron ic control unit .
A WARNING
Changing the vehicle 's s uspension includ­
ing use of unapproved tire-rim combina­
t ions can change Advan ced Airbag per­
formance and increase the risk of ser io us
personal in jury in a crash.
- Never install suspens io n components
that do not have the same performance
characteristics as the components origi ­
nally installed on your vehicle .
- Never use tire -rim combinat ions that
have not been approved by Audi.
A WARNING
-Items stored between the safety be lt
buckle and the center console can cause
the sensors in the buckle to send the
wrong information to the e lectronic con­
trol module and prevent the Advanced Air­
bag System from wo rking properly.
- Always ma ke sure that nothing can inter­
fere wi th the safety belt buckles a nd that
they are not obstruc ted .
@ For the sake of the env ironment
Undeployed airbag modules and preten­
s ione rs might be classified as Perchlorate
Ma teria l - specia l hand ling may apply, see
www .d tsc.ca.gov/hazardouswaste/per­
ch lorate. W hen the vehicle or parts of t he
restraint system including airbag modu les
and safety belts with pretensioners are
scrapped, all applicab le laws and regu la­
tions must be observed. Your authorized
Audi dealer is familia r with these require­
ments and we recommend that you have
your dealer perform this service fo r you.
Knee airbags
Description of knee airbags
The airbag system can provide supplemental
protection to properly restrained front seat occupants .
Fig. 1 26 D river 's ai rb ag
The airbag for the driver is Located in the in­
strument panel underneath the steering
whee l
c::> fig. 126, the airbag for the passenger
is at about the same height in the inst rument
panel underneath the g love compartment . ..,_

the passenger seat. If the airbag de­
ploys, this can resu lt in serious or fatal
injuries.
- No objects of any kind should be car­
ried in the footwell area in front of the
driver's or passenger's seat. Bulky ob­
jects (shopping bags, for example) can hamper or prevent proper deployment
of the airbag. Small objects can be
thrown through the vehicle if the ai r­
bag deploys and injure you or your pas­
sengers.
- Make sure there are no cracks, deep
scratches or other damage in the area of
the instrument pane l where the knee air­
bags are located.
- If children are incorrect ly seated, their
risk of injury increases in the case of an
accident ¢
page 138, Child Safety.
Side airbags
Description of side airbags
The airbag system can provide supplemental
protection to properly restrained front seat occupants.
F ig . 128 Side a irbag location in t he d river 's seat
The s ide airbags are located in the sides of the
front seat backrests
r::} fig . 128 facing the
doors. They are identified by the word "AIR ­
BAG".
The side airbag system basically consists of:
-the electronic control module and external
side impact sensors
- the two side airbags located in the sides of
the front backrests
Airbag system 135
- the airbag warning light in the instrument
cluster.
The airbag system is mon itored electronically
to make certain that it is functioning p roperly
at all times. Each time you turn on the igni­
tion, the airbag system indicator light will
come on for a few seconds (self diagnostics) .
The side airbag system supplements the safe­
ty belts and can help to reduce the risk of in­
jury to the driver's and front passenger 's up­
per torso and head injuries on the side of the
vehicle that is struck in a side collision. The
airbag deploys only in side impacts and only
when the vehicle acceleration registered by
the control unit is high enough .
If this rate is
below the reference value programmed into
the control unit, the side airbags will not be
triggered , even though the car may be badly
damaged as a result of the collision. It is not
possible to define an airbag triggering range
that will cover every possible angle of impact,
since the circumstances will vary considerably between one collision and another. Important
factors include, for example, the nature (hard
or soft) of the impacting object, the angle of
impact, vehicle speed, etc.
¢page 137, Im­
portant safety instructions on the side airbag
system .
Aside from their normal safety function, safe ­
ty belts work to help keep the driver or front
passenger in position in the event of a side
collision so that the side airbags can provide
protection.
The airbag system is
not a substitute for your
safety belt . Rather, it is part of the overall oc­
cupan t restra int system in your vehicle. Al­
ways remember that the side airbag system
can only help to protect you if you are wearing
your safety be lt and wearing it properly. This
is another reason why you should always wear
your safety be lts, not just because the law re­
quires you to do so¢
page 110, Why safety
belts? .
It is important to remember that while the
supplemental side airbag system is designed
to reduce the likelihood of serious injuries,
IIJ>,