2012 AUDI A3 weight

114 Safety belts
-Failure to pay attention to the warning
light that come on, could lead to person­
al injury.
Why safety belts?
Frontal collisions and the law of physics
Frontal crashes create very strong forces for
people riding in vehicles.
Fig. 121 Unb elted occupants in a ve hicle heading for a
wall
Fig. 122 Th e vehicle c rash es into the wall
The physical principles are simple. Both the
vehicle and the passengers possess energy
which varies w ith veh icle speed and body
weight . Engineers call this energy "kinetic en­
e rgy ."
T he higher the speed of the vehicle and the
greater the vehicle's weight, the more energy
that has to be "absorbed" in the crash .
Vehicle speed is the most significant factor.
If
the speed doubles from 15 to 30 mph (25 to
50 km/h), the energy increases 4 times!
Because the passengers of this vehicle are not
using safety belts
c::;, fig. 121, they will keep
moving at the same speed the vehicle was
mov ing just before the crash, until something
stops them - here, the wall ¢
fig. 122 .
The same principles apply to people sitting in
a vehicle that is involved in a frontal collision .
Even at city speeds of 20 to 30 mph (30 to 50
km/h), the forces acting on the body can
reach one ton (2,000 lbs. or 1,000 kg) or
more . At greater speeds, these forces are even
higher .
Peop le who do not use safety belts are also
not attached to their vehicle. In a frontal colli­
s ion they will also keep moving forward at the
speed their vehicle was travell ing just before
the crash . Of course, the laws of physics don't
just apply to frontal collisions, they determine
what happens in all kinds of accidents and col­
lisions .
What happens to occupants not wearing
safety belts?
In crashes unbelted occupants cannot stop
themselves from flying forward and being in­
jured or killed. Always wear your safety belts!
Fig. 123 A d river not wea ring a safety b elt is viol en tly
thrown fo rwa rd
Fig . 124 A rear passe nge r not wearing a safety belt
w ill fl y forward and strike the dr iver
Unbelted occupants are not able to resist the
tremendous forces of i mpac t by holding tight
or bracing themselves. Without the benefit of
safety restraint systems , the unrestrained
ll-

124 Airbag system
Even though your vehicle is equipped with an
Advanced Airbag System, make certain that
all chi ldren, especially those 12 years and
younger, a lways ride in the back seat properly
restrained for their age and size. The airbag
on the passenger side makes the front seat a potentially dangerous place for a ch ild 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 child in a rearward-facing seat.
The Advanced Airbag System in your veh icle
has been certified to comply with the require­
ments of United States Federal Motor Vehicle
Safety Standard 208 as applicable at the time
your vehicle was manufactured.
The Standard requires the front a irbag on the
passenger side to be turned off ("sup­
pressed") if a child up to about one year of
age restrained in one of the rear-facing or for­
ward -facing infant restraints listed in Federal
Motor Vehicle Safety Standard 208 with which
the Advanced Airbag System in your vehicle
was certified has been installed on the front passenger seat . For a listing of the child re ­
strai nts that we re used to certify compliance
with the US Safety Standard
r=v page 145.
The PASSENGER AIR BAG OFF light in the in­
strument panel te lls you when the front Ad­
vanced A irbag on the passenger side has been
turned off by the e lectronic control unit.
Each t ime you turn on the ignition, the
PAS ­
SENGER AIR BAG OFF
light will come on for a
few seconds and:
- will 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,
- wi ll go off if the front passenger seat is oc ­
cupied by an adult as registered by the
weight-sensing mat
r=v page 133, Monitor­
ing the Advanced Airbag System .
The PASSENGER AIR BAG OFF light comes on
when the control un it detects a total weight
on the front passenger seat that requires the
front airbag to be turned off.
If the total weight on the front passenge r
seat is more than that of a typica l 1 year -old
chi ld but less than the weight of a small
adult, the front airbag on the passenger side
can deploy (the
PASSENGER AIR BAG OFF
light does not come on). If the PASSENGER
AIR BAG OFF
light does not come on, the
front airbag on the passenger side has not
been turned off by the electronic con trol unit
and can deploy if the control unit senses an
impact that meets the cond itions stored in its
memory .
For example, the airbag may deploy if:
-a small ch ild that is heav ier than a typical 1
year-old ch ild is on the front passenger seat
( re gard less of whether the child is in one of
the child safety seats listed
r=v page 145), or
- a child who has outgrown ch ild restraints is
on the front passenger seat.
If the front passenger airbag is turned off, the
PASSENGER AIR BAG OFF light comes on in
the instrument cluster and stays on.
The front airbag on the passenger s ide may
not deploy (the PASSENGER AIR BAG OFF
light does not illum inate and stay lit) even if a
small adult or teenager, or 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
r=v page 104, Proper seating
position for the driver.
If the front passenger airbag deploys, the
Federal Standard requires the airbag to meet
the "low risk" deployment criteria to reduce
the risk of injury t hroug h interaction with the
airbag. "Low risk" deployment occurs in those
crashes that take place at lower dece lerat ions
as defined in the electronic control unit
r=v page 133, PASSENGER AIR BAG OFF light .
Always remember, a child safety seat or infant
carr ier installed on the front seat may be
struck and knocked out of posit ion by the rap­
idly inflat ing passenger's airbag in a frontal
collision . The air bag could greatly reduce the
effectiveness of the ch ild restraint and even
seriously injure the child during inflation .

126 Airbag system
-Never place additiona l items on the seat
that can increase the total weight regis­
tered by the weight-sensing mat and can
cause injury in a crash.
Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat
occupants.
F ig . 131 Location of driver airbag: in steer ing whee l
Fig. 132 Location of front passenger's airbag: in the in ­
strument panel
Your veh icle is equipped with an "Advanced
A irbag System" in compliance with United
States Federal Motor Vehicle Safety Standard ( FM VSS) 208 as app licab le at the time your
ve hicl e was manufac tured. The safe ty belts
for the front seats have "pretensioners" that
he lp to take slack out of the belt system. The
pretensioners are also activated by the elec­
tronic control unit for the airbag system.
The front safety be lts a lso have load limiters
to help reduce the forces applied to the body
i n a crash.
The airbag fo r the driver is in t he s teer ing
wheel hub¢
fig. 131 and the airbag for the front passenger is in the
instrument panel
¢
fig. 132 . The general location of the airbags
is marked "AIRBAG".
T here is a lot you need to know about the a ir­
bags in your vehicle. We urge you to read the
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 for your safety and
the safety of you r passengers, especially in­
fants and small children.
_&. WARNING
Neve r rely on airbags a lone for p rotection.
- Even when they deploy, airbags provide
only supplemental protect ion.
- Ai rbag work most effectively when used
with properly worn safety belts.
- Therefore, always wear your safety belts
a nd make sure that eve rybody in your ve­
h icle is p roperly restrained.
_&. WARNING
=
A pe rson on the front passenger seat, es-
pe cial ly infants and sma ll children, w ill re­
ce ive ser io us in ju ries and can even be kil­
l ed by being too close to the airbag when
it inflates .
- Altho ugh the Advanced Airbag Sys tem in
your vehicle is designed to tur n off the
front passenger airbag if a n in fant or a
sma ll child is on the front passenger
seat, nobody can absolutely guarantee
that deployment under these special
conditions is imposs ible in all conceiva­
b le si tua tions that may happen during
the useful life of your v ehicle.
- The Advanced Airbag System can dep loy
i n acco rdance with the "low risk" option
unde r the U.S. Fede ral Standa rd if a child
t hat is heav ie r th an the typical o ne-year
old ch ild is on the front passenger seat
and the other conditions for ai rbag de ­
p loyment are met .

-Accident statistics have shown that chil­
dren are generally safer in the rear seat
area than in the front seating posit ion.
- For their own safety, all children, espe­
cially 12 years and younger, sho uld al­
ways ride in the back properly restrained
for their age and size.
Advanced front airbag system
Your veh icle is equipped w ith a front Advanced
A irbag System in compliance with Un ited
States Federal Motor Vehicle Safety S tanda rd
208 as applicab le a t the time your vehicle was
manufac tured .
The front Advanced Airbag System supple­ ments the safety belts to provide add it iona l
p rotection fo r the driver's and fron t passeng­
e r' s heads and upper bodies in fronta l crashes.
The airbags inflate only in frontal impacts
when the vehicle dece leration is high enough .
The fron t Advanced A irbag Sys tem for the
front seat occ upants is no t a substi tute for
your safety bel ts. Rather, it is part of the over ­
a ll occupa nt restraint system in your vehicle.
A lways remember that the airbag system can
only help to protect you, if you are s itting up­
right, wearing your safety belt and wearing it
properly . This is w hy you and your passenge rs
must always be properly restrai ned, not just
because the law requires you to be .
The Advanced Airbag System i n your veh icle
has been certified to meet the " low r isk" re ­
qu irements for 3 and 6 year-o ld childre n on
the passenger s ide and very small adu lts on
the dr iver side. The low ris k dep loymen t cr ite­
ria are intended to he lp red uce the risk of i n­
j ury thro ugh in teraction with the front airbag
that can occ ur, fo r example, by being too
close to the steering whee l and instrument
panel when the airbag inflates.
I n addition, the sys tem has been certif ied to
comp ly with the "suppression" requirements
of the Safety Standard, to turn off the front
airbag for infants 12 months old and younger
who are restra ined on the front passenger
A irbag system 127
seat in child rest raints that are listed in the
Standard
¢ page 145 .
"Supp ress ion" requi res the fron t airbag on t he
passenge r sid e to be turned off if:
- a child up to abo ut one year of age is re­
strained on the front passenger seat in one
of t he rear-fa cing o r fo rward -f a cing infan t
res traints listed in Federal Motor Vehicle
Safety Standard 208 with which the Ad ­
vanced Airbag System in your ve hicle was
cert ified. For a listing o f the chi ld restraints
that were used to certify your vehicle's com­
pliance w ith the US Safety Standard
¢page 145,
- weight less than a thresho ld level stored in
the control unit is detected on the front pas­
senge r seat.
When a person is detected on the front pas­
senger seat, weighing more than the total
weight of a chi ld that is about 1 year old re­
stra ined in one of the rear -fac ing or forward ­
facing infant restraints ( listed in Fede ral Mo­
tor Vehicle Safety Standard 208 with whic h
t h e Advanced A irbag Sys tem in yo ur vehicle
was certified), the fron t airbag on the passen­
ger side may or may not dep loy .
T he
PASSENGER AIR BAG OFF lig ht comes o n
whe n the elect ro nic cont ro l unit de tects a to ­
ta l we igh t on the front p assenger sea t that re­
quires the front airbag to be t urned off .
If the
PASSENGER AIR BAG OFF light does not
come on, the front ai rbag on the passenger
s ide has not been t urned off by the contro l
u nit and can dep loy if the control un it senses
an impact that meets the cond itions stored i n
its memory .
If the total weight on the front passenger
seat is more than that of a typical 1 year-old,
but less than the we ight of a small adu lt, the
front a irbag on t he passenger side may dep loy
(the
PASSENGER AIR BAG OFF light does not
come on) .
For example, the airbag may deploy if:
-a small chi ld that is heav ie r than a typical 1
year-old ch ild is on the front passenger seat ..,. •
•

the forward-facing child restraint. The backrest must be adjusted to an upr ight
posit ion.
- Make sure that the
PASSENG ER AI R BA G
OFF
light comes on and stays on all the
t ime whenever the ignition is switched
on.
Advanced Airbag System components
The front passenger seat in your vehicle has a
l ot of very important parts of the Advanced
Airbag System in it. These parts include the
weight-sens ing ma t, sensors, wiring, brack­
ets, and mo re. The function of the system in
the front passenger seat is checked by the
e lectronic control unit when the ignition is on .
The control unit monitors the Advanced Air­ bag System and turns the airbag indicator
light on when a malfunction in the system
components is detected. The function of the
airbag ind icator light is described in greater
deta il below. Because the front passenger
seat contains impo rtant parts of the Ad­
vanced A irbag System, you m ust take care to
p revent it from being damaged. Damage to
the seat may prevent the Advanced Airbag for
the front passenger seat from doing its job in
a crash .
The front Advanc ed Airbag Syst em
con sis ts o f th e following :
-Crash sensors in the front of the vehicle that
measure vehicle acceleration/deceleration
to provide information to the Advanced Air­ bag System about the severity of the crash.
-An electronic control unit, with integrated
crash sensors for front and side impacts .
The cont ro l unit "decides" whether to fire
the front airbags based on the information r eceived from the c rash sensors. The control
unit a lso "dec ides" whet her the safety be lt
pretensione rs should be activated.
- An Advanced Airbag with gas generator for
the d river ins ide the steer ing whee l hub.
- An Advanced Airbag with gas generator in­
s ide t he instr ument pane l for the front pas­
senger.
A irbag system 129
- A weight-sensing mat under the upho lstery
padding of the front passenger seat cushion
that measures the total weight on the seat .
The informat ion reg istered is sent continu­
ously to the electron ic control unit to regu­
late deployment of the front Advanced Air­
bag on the passenger side.
- An airbag monitoring system and ind icator
light in the instrument cluster
¢page 133.
-The PASSENGER AIR BAG OFF light comes
on and stays on in the center of the instru­
ment panel
c:::> page 133, fig . 134 and tells
you when the front Advanced Airbag on the passe nger side has been tu rned off.
- A senso r below the safety belt latch fo r the
front seat passenger to measure the tension
on the safety be lt. T he ten sion on the safety
be lt and the weight regis tered by the
weight -sensing mat he lp the control unit
"decide" whether the front airbag fo r the
front passenger seat should be turned off or not
¢ page 123, 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 contro l un it .
A WARNING
D amage to the front passenger seat can
p revent the front airbag from wor king
properly.
- Imp roper repai r or d isassembly of the
fr on t passenge r and dr iver seat will pre­
vent the Advanced Airbag System from
functioning p roperly.
- Repairs to the front passenger seat must
be pe rformed by qualified and p roperly
trained workshop personne l.
- Never remove the front passenger or driver seat from the vehicle .
- Never remove the upho lstery from the
front passenger seat .
- Never disassemble or remove p arts from
-
the sea t or disconnect wires from it. ..,.
•
•

130 Airbag system
-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 .
- If the
PASSENGER AIR BAG OFF light
does not come on and stay on, immedi­
ately install child restraint in a rear seat­
ing position and have the airbag system
inspected 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 Adva 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
amount programmed in the electronic control
unit. The front airbag on the passenger side
will also be turned off if one of the child safe­
ty seats that has been certified under Federal
Motor Vehicle Safety Standard 208 has been
recognized on the seat. The
PASSENGER AIR
BAG OFF
light comes on and stays on to tell
you when the front Advanced Airbag on the passenger side has been turned off ..,_

¢ page 123, Child restraints on the front seat
- some important things to know .
A WARNING
To reduce the risk of injury when an airbag
inflates, always wear safety belts properly.
- If you are unrestrained, lean ing forward,
sitting sideways or out of position in any
way, your risk of injury is much higher.
- You w ill also receive serious injuries and
cou ld even be killed if you are up against
the a irbag or too close to it when it in­
flates - even with an Advanced Airbag
~ page 122.
More important things to know about
front airbags
F ig. 133 Inflated front a irbags
Safety belts are important to help keep front
seat occupants in the proper seated pos ition
so that airbags can unfold properly and pro­
vide supp lemental protection in a fronta l co l­
lision .
The front a irbags are designed to provide ad­
d itiona l protection for the chest and face of
the dr iver and the front seat passenger when :
- safety belts are worn properly,
- the seats have been positioned so that the occupant is properly seated as far as possi­
ble from the a irbag,
- and the head restraints have been proper ly
adjusted .
Because airbags i nflate in the blink of an eye
with great force, things you have on your lap or have placed on the seat could become dan­
gerous projectiles, and be pushed into you if
the airbag inflates.
A irba g sy stem 131
When an airbag deploys, fine dust is re leased.
This is norma l and is not caused by a fire in
the vehicle . This dust is made up mostly of a
powder used to lubricate the airbags as they
deploy. It could irritate skin .
It is important to remember that whi le the
supplementa l airbag system is designed to re­
duce the like lihood of serious injuries, other
injur ies, for example swelling, bruising and
minor abras ions, can also happen when air­
bags i nflate. A irbags do not protect the arms
or the lower parts of the body . Front a irbags
supplement the th ree -po in t safety belts only
in some fronta l co llisions in which the vehicle
deceleration is high enough to deploy the air­
bags .
Front airbags will not deploy :
-if the ignition is sw itched off when a crash
o ccu rs,
- in side co llisions,
- in rear-end collisions,
- in rollovers,
- when the crash dece leration measured by
the airbag system is less than the minimum
threshold needed for a irbag deployment as
reg istered by the electron ic contro l unit .
The f ront pa ssen ger airbag als o will no t
deplo y:
- when the front passenger seat is not occu­
pied,
- when the weight on the front passenger
seat as sensed by the Advanced Airbag Sys­
tem ind icates that the front a irbag on the
passenger side has to be tu rned off by the
electronic contro l un it (the
PASSENGER AIR
BA G OFF
light comes on and stays o n).
.&, WARNING
Sitting in t he wrong pos ition can increase
the risk of serious injury in crashes.
- T o reduce the risk of injury when the air­
bags inflate, the driver and passenge rs
m ust always s it in an upright position,
m ust not lean against or place any part

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
PAS SEN ­
GER AIR BAG OFF
light.
The Advanced Airbag System (including the
e lectronic 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 t ime you
turn on the ignition, the airbag monitor ing in­
d icator light
I will come on for a few seconds
(self diagnostics) .
t!i The syste m mus t be insp ected when the
indicato r light:
- does not come on when the ignit ion is
switched on,
- does not go out a few seconds after yo u
have switched on the ignition, o r
- comes on while d riving .
If an airbag system malfunction is detected,
the
I 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 irbag on the passenger side off, the
PASSEN­
GER AIR BA G 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 supp lemen tal p ro­
tection in a frontal crash.
- If the airbag indicator l igh t comes on, it
means that there may be something
wrong wit h the Advanced Airbag System.
It is possible that the airbag will inflate
when it is not s upposed to, or wi ll not in­
flate when it should.
-
Airba g sy stem 133
-Have the airbag system inspected imme­
diate ly by you r authorized Aud i dea ler.
PASSENGER AIR BAG OFF light
F ig . 1 34 Sect ion from th e ce nter console: PASSENGER
AIR BAG O FF light
The PAS SENGER AIR BAG OFF light is located
in the center console
c::> fig. 134.
The PA SSENGER AIR BAG OFF light will come
on and stay on to tell you when the front Ad­
vanced Airbag on the passenger side has been
turned off by the electron ic control unit. Each
time you turn on the ignit ion, the
PAS SEN­
GER A IR BAG OFF
light will flash for a few
seco nds and:
- will stay on if the front passenger seat is not
occupied,
- will stay on if there is a small ch ild 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-sensi ng mat.
The
PA SSENGER AIR BAG OFF light must
come on and st ay 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
- t he weight reg iste red on the fron t passen-
ger seat is equal to or less than the com -
bined weight of a typical 1 year-old 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 ..,_