Safety belt preten
sioners
How safety belt pretensioners work
In fron t, side and rear-end collisions above a
parti cular severi ty and in a rollover, safety
b e lts ar e te nsion ed automatically .
Reversible safety belt tensioners
The safety belts on the front seats are equip
ped wit h power reve rsible tensioners . T he fo l
l ow ing f un ct ions are available w hen the dr iv
e r' s/fron t passenger 's sa fety bel ts are fas
tened :
- Automatic tensioners: at the start of a d rive,
the safety be lts automatically adjust to the
passenge r aft er a certai n time period o r ve
hicle speed. To switch the automa tic ten
s ioners off, select the fo llow ing in the M MI:
I CAR I funct ion button > (Car )* systems > Ve·
hide sett ings
> Seats > Driver 's seat or Pas
senger's seat
> Automat ic belt tensione r >
Off.
-In certa in driving situations, the safety belts
may t ighten with a reversib le tensioning
function
¢ page 192.
-The safety belts may also tighten w ith this
r evers ible tension ing funct ion in mino r colli
s ions .
Pyrotechnic safety belt pretensioners
The safety be lts are equipped with safety be lt
pretensioners. The system is activated by sen
s o rs in fron t, side and rear-end collisions of
great severity and in a rollover . Th is tightens
the bel t and takes up be lt slack ¢&.
in Service
and disposal of safety belt pre tensioner on
page 146.
T aking up the s lack helps to redu ce
forward occup ant movemen t during a colli
sion.
A WARNING
- It is possib le for the pre tensioners to de
ploy i ncor rect ly .
- T he pyrotechnic sys tem can only provide
protection for one co llision. If the pyro -
Safety belts 145
technic pretensioners deploy, the preten
sioning system must be replaced .
(D Tips
The pyro technic safety be lt pretensioners
ca n only deploy once .
- T he safety bel t pretensioners do not de
ploy in minor frontal and s ide collisions,
in rear-end co llisions, i n rollovers and in
co llisions involving very little impact
f o rce.
- A fine dust is released w hen the py ro
technic safety be lt pretensioners dep loy.
Th is is normal and is not caused by a fire
in the vehicle.
- The re levant safety requi rements must
be observed when the vehicle or compo
nents of the system are scrapped . A
qualified dealership is fam iliar with
these regulations and will be please d to
pa ss o n the information to yo u.
- Be sure to observe all safety, env iron
ment al and ot her regu la tio ns if t he ve hi
cle or ind ividu al p ar ts of t he system, par
t ic ular ly the s afe ty belt or airbag, are to
be disposed. We recommend you have
your authorized A udi dealer perform this
service fo r you .
Service and disposal of safety belt
pretensioner
The safety belt pretens ione rs are parts of the
saf ety be lts on your Aud i. Insta lling, remov
i ng, se rv ici ng o r repair ing of be lt pre tension
ers can dam age the safe ty belt sy stem and
prevent it from working correctly in a co lli
sio n.
T he re a re some impo rtan t thi ngs you have to
kn ow to m ake su re th at the effectiveness o f
t h e sys tem w ill not be impaired and tha t dis
ca rded components do not cause injury o r pol -
lu te the environment . ..,_ •
•
148 Airbag sys tem
Since the cir cumstances will vary considerab ly
between one collision and anot her, it is not
possib le to def ine a range of vehicle speeds
that will cover every possible k ind and angle
of impact t hat will always trigger the a irbags.
Important factors include, for example, the
nature (hard or soft) of the object which the
car h its , the ang le of impact, vehicle speed ,
etc. The front airbags will also not inflate in
side or rea r collisions, or in ro ll-overs .
Always remember : Airbags will deploy only
once, and only in certa in k inds of co llisions .
Your safety belts are always there to offer pro
tection in those s ituations in which airbags
a re not supposed to deploy, or when they have
a lready deployed ; for example , when your ve
hicle strikes or is struck by another vehicle af
te r the first co llision .
This is jus t one of the reasons why an a irbag is
a supplementary restra int and is not a substi
tute fo r a safety belt . The airbag system
works most effect ively when used with the
safety belts. There fore, always properly wear
your safety belts¢
page 138.
A WARNING
Sitting too close to the steer ing whee l or
instrument panel will dec rease the effec
t iveness of the airbags and will increase
the risk of personal injury in a collision .
- Never sit closer than 10 inches (2S cm)
to the stee ring wheel or instrument pan
el.
- If you cannot sit more than 10 inches
( 2 5 cm) from the s teer ing whee l, investi
gate whethe r adap tive equipmen t may
be available to help you reach the pedals
and increase your seating distance from
the steering wheel.
- If you are unrestrained, lean ing fo rward,
sitting sideways or out of position in any
way, your risk of in jury is much higher.
- You will also receive serio us injuries and
cou ld even be killed if you are up against
the airbag or too close to it when it in
flates - even with an Advanced Airbag. -
To reduce the risk of injury when an a ir
bag inflates, always wear safety be lts
properly ¢
page 141, Safety belts.
-Always make certain that ch ildren age 12
or younger always ride in the rear seat. If
children are not properly restrained, they
may be severe ly injured or killed when an
ai rbag inflates .
- Never let children ride unrestrained or
improperly restrained in the vehicle. Ad
just the front seats prope rly .
- Never ride with the back rest reclined .
- Always sit as far as possible from the
steer ing whee l or the instrument pane l
¢page 129.
-Always sit upright with your back against
the backrest of your seat .
- Never p lace your feet on the instrument
panel or on the seat. Always keep both
feet on the floor in front of the seat to
help prevent serio us in ju ries to the legs
and h ips if the airbag inflates.
- Never recline the front passenger 's seat
to transport objects , Items can a lso
move into the a rea of the s ide airbag or
the front a irbag du ring bra king or in a
sudden maneuve r. Objects nea r the air
bags can become projectiles and cause
in jur y when an airbag inflates.
A WARNING ~
Airbags that have deployed in a crash must
be replaced.
- Use on ly orig ina l equipment airbags ap
proved by Aud i and installed by a trained
technician who has the necessary too ls
and d iagnost ic equipment to properly re
p lace any airbag in your vehicle and as
sure system effectiveness in a crash .
- Never permit salvaged or recycled air
bags to be installed in your vehicle .
Child restraints on the front seat - some
important things to know
.. Be sure to read the important informat ion
and heed the WARNINGS for important de
tai ls about chi ldren and Advanced Airbags
~ page 173.
Even though your vehicle is equipped with an
Advanced Airbag System, make certain that
a ll chi ldren, especially those 12 years and
younger, a lways ride in the back seat properly
restra ined for their age and si ze. The airb ag
on the passenger side makes the front seat a potentially dangerous place for a child to r ide .
The front seat is not the safest place fo r a
chi ld in a fo rward-facing chi ld seat. It can be a
very dange ro us p lace for an infant or a ch ild in
a rearward -facing seat.
The Advanced Airbag System i n your veh icle
h as been cert ified to comp ly with the require
men ts of Uni ted States Federa l Mo to r Veh icle
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 turne d off ("sup
p ressed") if a chi ld up to about one year of
age restrained in one of the rear -facing or for
ward -facing infant restraints listed i n Federal
Motor Vehicle Safety Standard 208 with wh ich
the Advanced Airbag System in your vehicle
was certified has been installed o n the front
passenger seat . For a listing of the child re
straints that we re used to certify compliance
with the US Safety Standard ~
page 175.
The PASS ENGER 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 u nit.
Each t ime you sw itch on the ignit ion, the
PAS
SENGER AIR BAG OFF
l ight w ill come on for a
few seconds a nd:
- will stay on if the front passenger seat is not
occup ied ,
- will stay on if the electrical capacitance
measured by the capacitive passenger de
tection system for the front passenge r seat
A irbag sys tem 149
equa ls the combined capacitance of an in
fant up to about one year of age and one of the rearwa rd-facing o r forward-fac ing ch ild
restraints listed in Federal Motor Vehicle
Safety Standard 208 with which the Ad
vanced Airbag System in your ve hicle was
cert ified . Fo r a listing of the child restraints
that were used to certify your vehicle's com p lia nce w ith the U.S. Safety Standard
~ page 175.
-w ill stay on if t he re is a small ch ild or child
restrai nt on the front passenge r seat,
- w ill go off if the front passenger seat is oc
cupied by an adult as registered by the ca
pacitive passenger det ection sys tem
~ page 159, Monitoring the Advanced Air
bag System.
T he PASSENGER AIR BAG OFF lig ht comes on
when e lec tric al capacitan ce registe red on the
fron t passenger seat is eq ua l to or less than
the combined capacitance of a typical 1 year
o ld infant and one of the rearward-facing or
f orward -facing chi ld restraints listed in Feder
al Motor Vehicle Safety Standard 208 with
which the Advanced Airbag System in your ve
hicle was certified .
If the total e lectr ica l capacitance registered
on the front passenger seat is more than that
of a typical 1 year-o ld child but less than the
weight of a small adu lt, the front airbag on
the passenger side can deploy (the
PASSEN
GER AIR BAG OFF
light does not come on) .
If the
PASSENGER AIR BAG OFF light does
not come on, the front airbag on the passen
ger side has not been turned off by the e lec
tron ic cont ro l unit and ca n deploy if the con
t rol unit senses an impact tha t mee ts the co n
di tions s to red in its memo ry.
For example, th e airbag may deploy if:
- a small ch ild that is heav ier than a typical 1
year-old chi ld is o n the fron t passenger seat
(regard less of whether the child is in one of
the ch ild seats listed~
page 175), or
- a child who has outgrown child restraints is
on the front passenge r seat. .,,. •
•
150 Airbag sys te m
If the front passenger airbag is turned off, the
PASSENGER AIR BAG OFF light comes on in
the instrument cluster and stays on.
I f the front passenger airbag deploys, the
F ederal Standard requires the airbag to meet
the " low risk" deployment criteria to reduce
the r isk of injury through interaction with the
a irbag. "Low risk" deployment occurs in those
crashes that take place at lower decelerations
as defined in the electronic control unit
c::> page 160, PASSENGER AIR BAG OFF light.
A lways remember, a chi ld seat or infant carri
er installed on the front seat may be struck
and knocked out of position by the rap idly in
flating passenger's a irbag in a frontal colli
sion . The airbag could greatly reduce the ef
fectiveness of the ch ild restraint and even se
rio usly inju re the child during inflat ion.
For this reason, and because the back seat is
the safest place for chi ldren - when properly
restra ined accord ing to their age and size - we
strongly recommend that children always sit in the back seat
c::> page 173, Child Safety.
_& WARNING
-
A child in a rearward -facing child seat in
stalled on the front passenger seat will be
seriously injured and can be killed if the
front airbag inflates - even with an Ad
vanced Airbag System.
- The inflating a irbag will hit the child seat
or infant carrier with great force and w ill
smash the ch ild seat and child against
the backrest, center armrest, door or roof.
- Always install rear-facing child seats on the rear seat.
- If you must install a rearward facing
child seat on the front passenge r seat
because of exceptiona l circumstances
and the
PASSENGER AIR BAG OFF light
does not come on and stay on, immedi
ately install the rear-f acing chi ld seat in a
rear seating position and have the ai rbag
system inspected by your Aud i dealer. -
Forward-facing child seats installed on
the front passenger's seat may interfere
with the deployment of the a irbag and
cause serious persona l injury to the
child.
_& WARNING
-If, i n except ional circumstances, you must
i nsta ll a forward-facing child restraint on
the front passenge r's sea t:
- Always make sure the forward-facing
seat has been designed and certified by
its manufacture r fo r use on a fron t seat
with a passenger fron t and s ide a irbag.
- Never p ut the fo rward -facing child re
s tra int up against or very near the instru
men t panel.
- Always move the passenge r seat into its
rearmost pos ition in the seat's fore and
aft ad justment range, as fa r away from
the airbag as possible before installing
the forward-facing ch ild restra int . The
backrest must be ad justed to an upright
position.
-Make sure that the PASSENGER AIR BAG
OFF
li ght comes on and stays on all the
time whenever the ignition is switched on .
_& WARNING
-To reduce the risk of serious injury, make
sure that the
PASSENGER AIR BAG OFF
light w ill be displayed whenever a child re
straint is installed on the front passenger
seat and the ignition is sw itche d on .
- If the
PASSENGER AIR BAG OFF light
does not s tay on, perform the checks de
scribed
<> page 159, Monitoring the Ad
vanced Airbag System.
- Ta ke the chi ld restraint off the front pas
senger sea t and install it prope rly at one
of the rear seat positions i f the
PASSEN
GER AIR BAG OFF
light does not stay on.
- Have the airbag system inspected by
your Aud i dea ler immediately.
-Always carefully follow instru ctions from
c hild restraint manufacturers when in
sta lling child restraints.
A WARNING
If, in exceptional circumstances, you must
install a forward or rearward-facing child
restraint on the front passenger's seat:
- Improper installation of child restraints
can reduce their effectiveness or even
prevent them from providing any protec
tion.
- An improperly installed child restraint
can interfere with the airbag as it de
ploys and seriously injure or even kill the
child - even with an Advanced Airbag
System.
- Always carefully follow the manufactur
er's instructions provided with the child
seat or carrier .
- Always make sure that there is nothing
on the front passenger seat that will
cause the capacitive passenger detection
system in the seat to signal to the Airbag
System that the seat is occupied by a
person when it is not, or to signal that it
is occupied by someone who is heavier
than the person actually sitting on the
seat. The presence of additional objects
could cause the passenger front airbag
to be turned on when it should be off, or
could cause the airbag to work in a way
that is different from the way it would
have worked without the object on the
seat .
Airbag system 151
Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat occupants.
Fig. 157 Loc ation of driver airbag: in steering w heel
Fig. 158 Loc ation of front passenger's a irbag: in the in·
strument panel
Your vehicle is equipped with an "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 system senses
the position of the front seats and controls
front airbag inflation with a valve, depending
on the distance between the respective seat
and the steering wheel or instrument panel.
The safety belts for the seats have "preten
sioners" that help to take slack out of the belt
system. The pretens ioners are also activated
by the electronic control unit for the airbag
system .
The front safety belts also have load limiters
to help reduce the forces applied to the body
in a crash.
The airbag for the driver is in the steering
wheel hub
q fig. 157 and the airbag for the
front passenger is in the instrument panel
-The Advanced Airbag System can deploy
in accordance with the .,low risk" option
for 3- and 6-year-old children under the U.S. Federal Standard if a child with elec
trical capacitance greater than the com bined capacitance of a typical one-year
old infant restrained in one of the for
ward facing or rearward-facing child seats with which your vehicle was certi
fied is on the front passenger seat and
the other conditions for airbag deploy ment are met.
- Accident statistics have shown that chil
dren are generally safer in the rear seat
area than in the front seating position.
- For their own safety, all children, espe
cially 12 years and younger, should al
ways ride in the back properly restrained
for their age and size.
Advanced front airbag system
Your vehicle is equipped with a front Advanced
Airbag System in compliance with United
States Federal Motor Vehicle Safety Standard
208 as applicable at the time your vehicle was manufactured.
The front Advanced Airbag System supple ments the safety belts to provide additional
protection for the driver's and front passeng
er's heads and upper bodies in frontal crashes.
The airbags inflate only in frontal impacts
when the vehicle deceleration is high enough.
The front Advanced Airbag System for the
front seat occupants is not a substitute for
your safety belts. Rather, it is part of the over all occupant restraint system in your vehicle.
Always remember that the airbag system can
only help to protect you, if you are sitting up right, wearing your safety belt and wearing it
properly . This is why you and your passengers
must always be properly restrained, not just
because the law requires you to be .
The Advanced Airbag System in your vehicle has been certified to meet the "low risk" re
quirements for 3 and 6 year-old children on
the passenger side and very small adults on
Airbag system 153
the driver side. The low risk deployment crite
ria are intended to help reduce the risk of in
jury through interaction with the front 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 Standard, to turn off the front
airbag for infants 12 months old and younger
who are restrained on the front passenger
seat in child restraints that are listed in the
Standard
¢ page 175, Child restraints and
Advanced front airbag system.
"Suppression " requires the front airbag on the
passenger side to be turned off if:
- a child up to about one year of age is re
strained on the front passenger seat in one
of the rear-facing or forward-facing infant
restraints listed in Federal Motor Vehicle
Safety Standard 208 with which the Ad
vanced Airbag System in your vehicle was
certified. For a listing of the child restraints
that were used to certify your vehicle's com
pliance with the US Safety Standard
¢page 175,
-When a person is detected on the front pas
senger seat that has an electrical capaci
tance that is more than the total electrical
capacitance of a child that is about 1 year
old restrained in one of the rear-facing or
forward -facing infant restraints (listed in
Federal Motor Vehicle Safety Standard 208
with which the Advanced Airbag System in
your vehicle was certified), the front airbag on the passenger side may or may not de
ploy.
The
PASSENGER AIR BAG OFF light comes on
when the electronic control unit detects a to
tal electrical capacitance on the front passen
ger seat that requires the front airbag to be
turned off. 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 control unit and can deploy if the control unit senses an impact that meets the condi -
tions stored in its memory .
IJJ,,
•
•
154 Airbag sys te m
If the tota l electrical capacitance registe red
on the front passenger seat is more than that
of a typ ica l 1 year-old, but less than the
weight of a small adult, the front a irbag on
the passenger side may deploy (the
PA SSE N
GER AIR BAG OFF
li ght does not come on).
For e xample , the airbag m ay deploy if :
-a small child that is heavier than a typical 1
year-o ld child is on the front passenger seat
(regardless of whether the child is in one of
the chi ld seats listed
¢ page 175),
-a chi ld who has outgrown child restraints is
on the front passenger seat.
If the front passenger airbag is turned off, the
PASSENGER AIR BAG OFF light in the center
of the instrument panel wi ll come on and stay
on.
If the front passenger airbag deploys, the
F ederal Standard requires the airbag to meet
the " low risk" deployment criteria to help re
d uce the risk of injury through interaction
with the airbag. "Low risk" deployment occurs
in those crashes that take place at lower de
celerations as defined in the electronic control un it
¢ page 159.
Alw ays rem ember : Even though your vehicle
is equipped with Advanced Airbags, the safest
place for children is properly restrained on the
back seat . Please be sure to read the impor
tant information in the sect ions that follow
and be sure to heed a ll of the WARNINGS.
.&_ WARNING
To reduce the risk of injury when an airbag
inflates, a lways wear safety belts prope rly.
- If you are unrestrained, lean ing fo rward,
sitting sideways or out of position in any
way, your risk of injury is much higher.
- You w ill also receive serio us 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 147.
.&_ WARNING
A child in a rearward-fac ing ch ild seat in
stalled on the front passenger seat will be
seriously injured and can be killed if the
front airbag inflates - even w ith an Ad
van ced A irbag System.
- Altho ugh the Advanced Airbag System in
your veh icle is designed to turn off the
front airbag when a rearward-facing
child restraint has been instal led on the
front passenger seat, nobody can abso
lutely g uarantee that dep loyment is im
possible in all conceivable situations that
may happen dur ing the usefu l life of your
veh icle.
- The inflating airbag will h it the ch ild seat
or infant carrier with great force and will
smash the child seat and child against
the backrest, center armrest, door, or roof.
- Always install rearward-facing ch ild re
straints on the rear seat .
- If you must install a rearward fac ing
child seat on the front passenger seat because of exceptional circumstances
and the
PASSENGER AIR BAG OFF light
does not come on and stay on, immed i
a tely insta ll the rear-facing child seat in a
rear seat ing pos ition and have the airbag
system inspected by your Audi dealer.
.&_ WARNING ,..___
If, in except iona l circumstances, you m ust
install 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
with a passenger front and s ide a irbag.
- Never p ut the forward-facing child re
straint up against or very near the instru
ment panel.
- Always move the passenger seat into its
rearmost 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
-
156 Airbag system
-Repairs to the front passenger seat must
be performed by qualified and properly
trained workshop personnel.
- Never remove the front passenger or
driver seat from the 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 put them on the seat. The capacitive
passenger detection mat in the front
passenger seat will not function properly
if it is punctured .
- Never carry things on your lap or carry
objects on the front passenger seat.
Such objects can influence the capaci
tance registered by the capacitive pas senger detection system, so that incor
rect information is provided 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 .
- If a seat heater has been retrofitted or
otherwise added to the front passenger
seat, never install any child restraint sys
tem on this seat.
- Never use cushions, pillows, blankets, or similar items on the front passenger
seat. The additional layers prevent the
capacitive passenger detection system
from accurately measuring the capaci
tance of the child safety seat and/or the
person on the seat and thus keep the Ad- vanced Airbag System from working
properly.
- Never place or use any electrical device
(such as a laptop, CD player, electronic
games device, power inverter or seat
heater for child seats) on the front pas
senger seat if the device is connected to
the 12-volt socket or the cigarette light
er socket . Such devices can influence the
capacitance registered by the capacitive
passenger detection system, so that in
correct information is provided to the air
bag control unit.
- 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 Audi dealer.
.&_ WARNING ~
If the front passenger seat gets wet, dry it
immediately.
- If liquid soaks into the front passenger
seat, this can keep the airbag system
from working properly and may, for in
stance, deactivate the passenger frontal
airbag. If this happens, the
PASSENGER
AIR BAG OFF
light will come on and stay
on together with the airbag indicator
light
fl in the instrument cluster .
- If liquid is pooled on the seat, but has
not soaked in, this may also keep the air
bag system from working properly and
cause the passenger frontal airbag to be
enabled (turned on), even though there
is a properly installed child restraint sys-
tem on the seat. Wet towels or other wet
~