2013 AUDI A4 belt

144 Safety belts
safety belt pretensianer on page 144. Taking
up the slack helps to reduce forward occupant
movement during a collision.
{[) Note
Never let the belt remain over a rear seat­
back that has been folded forward.
(D Tips
The safety belt pretensioner can only be activated once.
- In minor frontal and side collisions, in
rear-end collisions, in a rollover and in
accidents involving very little impact
force, the safety belt pretensioner are
not activated.
- In the case of a side crash, the safety
belt pretensioners will activate on the
driver's or front passenger's sides only,
depending on which side of the vehicle
the crash occurs .
- When the safety belt pretensioners are
activated, 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 ­
nents of the system are scrapped . An au­
thorized Audi dealer or qualified work­
shop is familiar with these regulations
and will be pleased to pass on the infor­
mation 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 authori zed 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 belt pretension­
ers can damage the safety 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 belt system,
we strongly recommend that you see
your authorized Audi dealer or qualified
technician who has an Audi approved re­
pair manual, training and special equip­
ment necessary.
@ For the sake of the environment
Undeployed airbag modules and preten­
sioners might be classified as Perchlorate
Material -special handling may apply, see
www .dtsc.ca.gov/hazardouswaste/per­
chlorate. When the vehicle or parts of the restraint system including airbag modules
safety belts with pretensioners are scrap­ ped, all applicable laws and regulations
must be observed . Your authorized Audi
dealer is familiar with these requirements
and we recommend that you have your
dealer perform this service for you.

Airbag system Important things to know
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints. For
airbags to do their job , occupants must al­
ways properly wear their safety belts and be
in a proper seating position.
For your safety and the safety of your passen­
gers, before driving off, always:
"" Adjust the driver's seat and steering wheel
properly ¢
page 128,
"" Adjust the front passenger's seat properly
¢page 59,
"" Wear safety be lts properly ¢ page 140,
"" Always properly use the proper child re-
straint to protect chi ldren ¢
page 166.
In a collision airbags must inflate within th e
blink of an eye and with considerable force.
The supplemental airbags can cause injuries if
the driver or the front seat passenger is not
seated properly . Th erefore in order to help the
a ir bag to do its job, it is important, both as a
driver and as a passenger to s it properly at all
times.
By keeping room between your body and the
steering wheel and the front of the passenger
compartment, the airbag can inflate fully and
comp letely and provide supplemental protec­
tion in certain frontal collisions ¢
page 128,
Proper occupant seating positions.
F or details
on the operation of the seat adjustment con­
trols ¢
page 60.
It's especially important that children a re
properly restrained ¢
page 166.
There is a lot that the driver and the passen­
gers can and must do to help the individual
safety features installed in your Aud i work to­
gether as a system.
Proper seating pos ition is important so that
the front airbag on the driver side can do its
job. If yo u have a physical impa irment or con-
Airbag system 145
dition that prevents you from sitting properly
on the driver seat with the safety belt properly
fastened and reach ing the peda ls, spec ial
modifications to your vehicle may be necessa­
ry.
Contact your authorized Audi dea ler, or call
Audi Customer Re lations at 1-800-822-2834.
When the airbag system dep loys, a gas gener­
ator will fi ll the airbags, break open the pad ­
ded covers, and inflate between the steering
whee l and the driver and between the instru­
ment panel and the front passenger. The air­
bags will deflate immediately after deploy­
ment so that the front occupants can see
through the windshield aga in without inter­
ruption .
All of th is takes place in the blink of an eye, so
fast that many people don 't even realize that
the air bags have deployed . The airbags also
inflate with a great deal of force and noth ing
shou ld be in their way when they deploy.
Front airbags in combination with properly
worn safety belts slow down and limit the oc ­
cupant's forward movement. Together they
help to prevent the driver and front seat pas­
senge r from hitting parts of the inside the ve­
hicle while reducing the forces acting on the
occupant dur ing the crash. In this way they
help to reduce the risk of injury to the head
and upper body in the crash . A irbags do not
protect the arms or the lower parts of the
body .
Both front air bags w ill not inflate in all frontal
collisions . The triggering of the air bag system
depends on the vehicle deceleration rate
caused by the collision and registered by the
electron ic control unit.
If this rate is below
the reference value programmed into the con­
trol unit, the airbags will not be triggered,
ev en though the car may be bad ly damaged as
a resu lt of the co llision . Vehicle damage, re­
pair costs or even the lack of ve hicle damage
is no t necessarily an indication of whether an
airbag should inflate or not .
It is not possib le to define a range of vehicle
speeds that w ill cover every possib le kind and ..,.
•
•

146 Airbag sys te m
angle of im pact that will always trig ger the
airbags, since the circumstances wi ll vary con­
siderably between one collision and another.
Important factors include, for example, the
nature (hard or s oft) of the object which the
car h its, the angle of impact, vehicle speed,
etc. The front airbags will also not inflate in
side or re ar collisions, or in roll-overs .
Always remember : Airbags will deploy only
once, and only in certa in kinds of collisions .
Your safety belts are always there to offe r 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 yo ur ve­
h icle strikes or is st ruck by another after the
first collision .
This is just one of the reaso ns why an a irbag is
a supplementary restra int and is not a s ubst i­
tute for a safety be lt. The airbag system
works most effective ly when used with the
safety be lts. Therefore, always properly wear
you r safety belts ¢
page 137 .
A WARNING
Sitting too close to the steer ing wheel or
instrument panel will decrease the effec­
tiveness of the airbags and will increase
the risk of pe rsonal injury in a collision .
- Never sit closer than 10 inches (25 cm)
to the stee ring wheel or instr ument pan­
el.
- If you cannot sit more than 10 inches
(25 cm) from t he steer ing wheel, investi­
gate whethe r adaptive equipment may
be available to help you reach the pedals
and incre ase your sea ting dis tance from
the steering wheel.
- If you are unrestr ained, lean ing fo rward,
s itting sideways or out of posi tion in any
way, your risk of injury is much higher.
- Yo u w il l a lso receive serio us in juries and
co uld 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 r is k of i njury when an air ­
bag inf lates, a lways wear safety belts
properly
c::> page 140, Safety belts .
-Always make certain that ch ild ren 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
airbag inflates .
- Never let c hildren 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 128.
-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
he lp prevent serious 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 i nto the a rea of the s ide airbag or
the front a irbag d uring br akin g or in a
sudden maneuve r. Obje cts ne ar the air ­
bags can become projec tiles and cause
inj ury when an airbag inflates.
.&, WARNING
A irbags that have deployed in a crash must
be replaced.
- Use on ly original eq uipment airbags ap ­
proved by Audi 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 i n 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 su re to read t he importa nt information
and head the WAR NINGS for important de­
t ails about children and Advanced A irbags
c::> page 166. ..,.

-Never place additional 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 o ccupan ts.
F ig . 153 Location of driver airbag: in steer ing whee l
Fig. 154 Location of front passenger's airbag: in the in ­
st rument panel
Your veh icle is equipped w ith an "Advanced
Ai rbag System" in compliance with United
States Federal Motor Vehicle Safety Standard (F MVSS) 208 as app licab le at the time your
ve hicle w as manufac tured. The system senses
the position of the front seats and controls
front airbag inflation with a va lve, depending
on the distance between the respect ive seat
and the steering wheel or instrument panel.
The safety belts for the seats have "preten­
sioners" that he lp to take slack out of the belt
system . The pretensioners are also activated
by the electron ic contro l unit for the airbag
sys tem.
A irba g sy stem 149
The front sa fety belts also have load limiters
to help reduce the forces applied to the body
in a crash .
T he airbag for the drive r is in the stee ring
whee l hub
q fig. 153 and the airbag for the
front passenger is in the instrument panel
~fig. 154 . The general locat ion of the a irbags
is marked "AIRBAG".
There is a lot you need to know about the ai r­
bags in your vehicle . We urge you to read t he
detailed information about airbags, safety
belts and child safety i n 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 yo ur passengers, especially in­
fants and small children.
_&. WARNING
N ever rely on airbags alone for protec tion.
- E ven w hen they deploy, airbags provide
only s uppleme nta l pro tect ion .
- Airbag work most effective ly when used
wit h properly wor n safety belts.
- Therefore, always wea r you r safe ty belts
and make sure that eve rybody i n your ve­
hicle is p rope rly res trained.
_&. WARNING
A pe rson on the fron t passe nger seat, es­
pe cial ly infants and sma ll children, will re­
ceive serious injuries and can even be kil­ l ed by being too close to the airbag when
it inflates .
- Altho ugh the Advanced Airbag System in
your veh icle is designed to tur n off the
front passenge r airbag if an infant or a
small child is on the front passenger
seat, nobody can absolutely guarantee
that deployment under these specia l
conditions is imposs ible in all conceiva­
b le sit uat ions that may happen during
t he useful life of your vehicle.
- The Advanced Airbag System can dep loy
in acco rdance with t he "low risk" option
un der the U.S. Fede ral Standa rd if a child
that is he avie r than the typical one-year
-
..

150 Airbag system
old child is on the front passenger seat
and the other conditions for airbag de­
ployment 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
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 168, Child restraints and
Advanced Airbags .
"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 168,
-weight less than a threshold level stored in
the control unit is detected on the front pas­
senger seat.
When a person is detected on the front pas­
senger seat, weighing more than the total
weight of a child that is about 1 year old re­
strained in one of the rear-facing or forward­
facing infant restraints (listed in Federal Mo­
tor Vehicle Safety Standard 208 with which
the Advanced Airbag System in your vehicle
was certified), the front airbag on the passen­ ger side may or may not deploy.
The
PASSENGER AIR BAG OFF light comes on
when the electronic control unit detects a to­
tal weight on the front passenger seat that re­
quires 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 conditions stored in
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 weight of a small adult, the
front airbag on the passenger side may deploy
(the
PASSENGER AIR BAG OFF light does not
come on).
ll-

Fo r exa mple, the airbag may depl oy 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 safety seats listed
¢ page 168),
-a ch ild who has outgrown child rest raints is
on the front passenger seat.
I f the front passenger airbag is turned off , the
PA SSENGER AIR B AG OFF light in the center
of the inst rument panel w il l come on and stay
on.
The front a irbag on the passenger side may
not deploy (the PASSENGER AIR BAG OFF
light does not illuminate and stay lit) if:
- a small adult or teenager is on the front pas­
senger seat
- a passenger who is not sitt ing upr ight w ith
their back against a non-reclined backrest
with their feet on the veh icle floo r in front
of the seat is on the front passenge r seat.
If 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 inj ury through in teraction
with the airbag . "Low risk" deployment occurs
in those crashes that take place at lower de ­
celerations as defined in the electronic control unit.
¢ page 156
Alway s remember : Even though you r vehicle
is equipped with Advanced Airbags, the safest
p lace 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 all of the WARNINGS.
_&. 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 highe r.
- You w ill also receive serious injuries and
could even be killed if you are up against
the a irbag or too close to it when it in-
A irbag system 15 1
flates - even with an Advanced Ai rbag
¢page 145.
_&. WARNING
A child in a rearward-fac ing ch ild safety
seat installed on the front passenger seat
will be ser ious ly injured and can be killed if
the front airbag inflates - even with an Ad­
vanced A irbag System .
-Although 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 guarantee that dep loymen t is im ­
possible in all conceivable situations that
may happen during the usefu l life of your
veh icle.
- The inflating 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, center
armrest, door, or roof .
-Always install rearward -facing chi ld re ­
straints in the back seat.
- If you must install a rearward fac ing
child safety seat on the front passenger
seat because of exceptional c ircumstan­
ces and the
PASSENGER AIR BAG OFF
light does not come on and stay on, im­
mediately insta ll the rear-fa cing ch ild
safety seat in a rear seating position and
have the airbag system inspected by your
author ized Audi dealer .
A WARNING
-=
If, in exceptiona l circumstances, you must
install a forward-facing child restraint on
the front passenger's seat:
- Always make s ure 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 put the forward-facing child re­
straint up against or very near the instru-
ment panel.
~
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152 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 ion.
- 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 un it 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 front 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 Sy stem
consists of the following:
- Crash sensors in the front of the veh icle that
measure veh icle acceleration/deceleration
to provide information to the Advanced Air­
bag System abou t the seve rity of the crash.
- An electron ic co ntrol unit, with integ rated
crash sensors for front and side impacts .
T he cont ro l 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 A irbag w ith gas generator and
cont ro l valve for the d river inside the steer­
ing wheel h ub.
- An Advanced A irbag with gas ge nerator and
contro l valve inside the instrument pane l for
the front passenger.
- A weight-sensing mat under the up ho lstery
pad ding 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 contro l unit to regu­
late deployment of the front Advanced Air­ bag on the passenger side .
- An airbag monitor ing system and i ndicator
light in the i nstr ument cluster ~
page 156 .
-A sensor in each front seat registers the dis­
tance between the respective seat a nd the
steer ing whee l o r i ns trument panel. The i n­
formation registered is sent cont inuously to
t he ele ctr onic cont ro l uni t to regula te de­
p loyment o f the front Advance d Airbags .
- The
PASSENGER AIR BAG OFF ligh t comes
on and st ays on in the cen ter o f the instr u­
ment panel
~ page 156, fig . 156 and tells
you whe n the front Advanced Airbag on the
passenger side has been tu rned off .
- A sensor below the safety be lt latch for the
front seat passenger to measure the tension on the safety be lt . The tension on the safety
be lt and the weight registered by the
weight-sensing mat he lp the control unit
"decide" whether the front airbag for the
front passenger seat should be turned off or
not ~
page 146, Child restraints on the
front seat -some important things to
know.
- A senso r in the safety belt latch fo r th e d riv­
er and fo r the front sea t passenger tha t
senses w het he r th at safety bel t is latched or
not and transmi ts this information to the
electronic control unit.
A WARNING
Damage to the front passenger seat can
p revent the front airbag from work ing
properly.
-

-Improper repair or disassembly of the
front passenger and driver seat will pre­
vent the Advanced Airbag System from
functioning properly .
- 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 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-
Airbag system 153
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 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. The amount of infla­
tion of the front airbags can also be adapted
to the front sea t position, depending on the
distance between the respective front seat
and the steering wheel or instrument panel as registered by sensors in the seats . Crash se­
verity depends on speed and deceleration as
well as the mass and stiffness of the vehicle
or object involved in the crash.
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
recogni zed on the seat . The
PASSENGER AIR .,,.
•
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