2020 AUDI A3 warning light

8V2012721BK
Safety belts

> Make sure the seatback of the rear seat bench is
in an upright position and securely latched in
place before using the belt > /\.
> Pull the safety belt evenly across the chest and
pelvis > fig. 209, > A\.
> Insert the tongue into the correct buckle of
your seat until you hear it latch securely.
> Pull on the belt to make sure that it is securely
latched in the buckle.
Automatic safety belt retractors
Every safety belt is equipped with an automatic
belt retractor on the shoulder belt. This feature
locks the belt when the belt is pulled out fast,
during hard braking and in an accident. The belt
may also lock when you drive up or down a steep
hill or through a sharp curve. During normal driv-
ing the belt lets you move freely.
Safety belt pretensioners
Safety belts with pretensioners help to tighten
the safety belt and remove slack when the pre-
tensioners are activated > page 252. The func-
tion of the pretensioner is monitored by a warn-
ing light > page 238.
Convertible locking retractor
Every safety belt except the one on the driver
seat is equipped with a convertible locking retrac-
tor that must be used when the safety belt is
used to attach a child seat. Be sure to read the
important information about this feature
=> page 289.

ZA WARNING
Improperly positioned safety belts can cause
serious injury in an accident > page 249,
Safety belt position.
— Safety belts offer optimum protection only
when the seatback is upright and belts are
properly positioned on the body.
— Always make sure that the rear seat backrest
to which the center rear safety belt* is at-
tached is securely latched whenever the rear
center safety belt is being used. If the back-
rest is not securely latched, the passenger
will move forward with the backrest during

sudden braking, in a sudden maneuver and
especially in a crash.
— Never attach the safety belt to the buckle
for another seat. Attaching the belt to the
wrong buckle will reduce safety belt effec-
tiveness and can cause serious personal in-
jury.
— A passenger who is not properly restrained
can be seriously injured by the safety belt it-
self when it moves from the stronger parts
of the body into critical areas like the abdo-
men.
— Always lock the convertible locking retractor
when you are securing a child seat in the ve-
hicle > page 290.
Safety belt position
Correct belt position is the key to getting maxi-
mum protection from safety belts.



B4H-0751



Fig. 210 Safety belt position
Standard features on your vehicle help you adjust
the position of the safety belt to match your body
size.
— belt height adjustment for the front seats*,
— height-adjustable front seats.

ZX WARNING
Improperly positioned safety belts can cause
serious personal injury in an accident.
—The shoulder belt should lie as close to the
center of the collar bone as possible and
should fit well on the body. Hold the belt
above the latch tongue and pull it evenly
across the chest so that it sits as low as pos-
sible on the pelvis and there is no pressure
on the abdomen. The belt should always fit


249

Airbag system

Always remember, a child seat or infant carrier
installed on the front seat may be struck and
knocked out of position by the rapidly inflating
passenger's airbag in a frontal collision. The air-
bag could greatly reduce the effectiveness of the
child restraint and even seriously injure the child
during inflation.
For this reason, and because the back seat is the
safest place for children - when properly restrain-
ed according to their age and size - we strongly
recommend that children always sit in the back
seat > page 278, Child safety.


Z\ WARNING
A child in a rearward-facing child seat instal-
led on the front passenger seat will be seri-
ously injured and can be killed if the front air-
bag inflates - even with an Advanced Airbag
System.
— The inflating airbag will hit the child 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 rear-facing child seats on the
rear seat.
— If you must install a rearward facing child
seat on the front passenger seat because of
exceptional circumstances and the PASSEN-
GER AIR BAG OFF light does not come on
and stay on, immediately install the rear-
facing child seat in a rear seating position
and have the airbag system inspected by
your Audi dealer.
— Forward-facing child seats installed on the
front passenger's seat may interfere with
the deployment of the airbag and cause seri-
ous personal injury to the child.
— Never put the forward-facing child restraint
up against or very near the instrument pan-
el,
— Always move the front passenger seat to the
highest position in the up and down adjust-
ment range and move it back to the rear-
most position in the seat's fore and aft ad-
justment range, as far away from the airbag
as possible, before installing the forward-
facing child restraint.
— Always make sure that the safety belt upper
anchorage is behind the child restraint and
not next to or in front of the child restraint
so that the safety belt will be properly posi-
tioned.
— Make sure that the PASSENGER AIR BAG
OFF light comes on and stays on all the time
whenever the ignition is switched on.



ZA WARNING
If, in exceptional circumstances, you must in-
stall 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 manu-
facturer for use on a front seat with a pas-
senger front and side airbag.

ZA\ WARNING
To reduce the risk of serious injury, make sure
that the PASSENGER AIR BAG OFF light will
be displayed whenever a child restraint is in-
stalled on the front passenger seat and the ig-
nition is switched on.
— If the PASSENGER AIR BAG OFF light does
not stay on, perform the checks described
= page 265, Monitoring the Advanced Air-
bag System.
— Take the child restraint off the front passen-
ger seat and install it properly at one of the
rear seat positions if the PASSENGER AIR
BAG OFF light does not stay on.
— Have the airbag system inspected by your
Audi dealer immediately.
— Always carefully follow instructions from
child restraint manufacturers when instal-
ling child restraints.


ZA, WARNING
If, in exceptional circumstances, you must in-
stall a forward or rearward-facing child re-
straint on the front passenger's seat:
— Improper installation of child restraints can
reduce their effectiveness or even prevent
them from providing any protection.

256

8V2012721BK
Airbag system

The front Advanced Airbag System for the front
seat occupants is not a substitute for your safety
belts. Rather, it is part of the overall occupant re-
straint system in your vehicle. Always remember
that the airbag system can only help to protect
you, if you are sitting upright, wearing your safe-
ty belt and wearing it properly. This is why you
and
your passengers must always be properly re-
strained, not just because the law requires you to
be.
The Advanced Airbag System in your vehicle has
been certified to meet the “low risk” require-
ments for 3 and 6 year-old children on the pas-
senger side and very small adults on the driver
side. The low risk deployment criteria are intend-
ed to help reduce the risk of injury through inter-
action 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 re-
straints that are listed in the Standard
=> page 280, Child restraints and Advanced front
airbag system.
“Suppression” requires the front airbag on the
passenger side to be turned off if:
—achild up to about one year of age is restrained
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 Advanced Airbag System in your
vehicle was certified. For a listing of the child
restraints that were used to certify your vehi-
cle's compliance with the US Safety Standard
=> page 280,
—a person is detected on the front passenger
seat that has an electrical capacitance 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 re-
straints (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
deploy.
The PASSENGER AIR BAG OFF light comes on
when the electronic control unit detects a total
electrical capacitance on the front passenger 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 conditions stored in its memory.
If the total electrical capacitance registered 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).
For example, the airbag may deploy if:
—asmall child that is heavier than a typical 1
year-old child is on the front passenger seat (re-
gardless of whether the child is in one of the
child seats listed S page 280),
—a child 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 will come on and stay on.
If the front passenger airbag deploys, the Federal
Standard requires the airbag to meet the “low
risk” deployment criteria to help reduce the risk
of injury through interaction with the airbag.
“Low risk” deployment occurs in those crashes
that take place at lower decelerations as defined
in the electronic control unit > page 265.
Always remember: 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 important infor-
mation in the sections that follow and be sure to
heed all of the WARNINGS.

ZA\ WARNING
To reduce the risk of injury when an airbag in-
flates, always wear safety belts properly. >

259

Airbag system


— If you are unrestrained, leaning forward, sit-
ting sideways or out of position in any way,
your risk of injury is much higher.
— You will also receive serious injuries and
could even be killed if you are up against the
airbag or too close to it when it inflates -
even with an Advanced Airbag > page 253.

Z\ WARNING
A child in a rearward-facing child seat instal-
led on the front passenger seat will be seri-
ously injured and can be killed if the front air-
bag inflates - even with an Advanced Airbag
System.
— Although the Advanced Airbag System in
your vehicle is designed to turn off the front
airbag when a rearward-facing child re-
straint has been installed on the front pas-
senger seat, nobody can absolutely guaran-
tee that deployment is impossible in all con-
ceivable situations that may happen during
the useful life of your vehicle.
— The inflating airbag will hit the child 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 child re-
straints on the rear seat.
— If you must install a rearward facing child
seat on the front passenger seat because of
exceptional circumstances and the PASSEN-
GER AIR BAG OFF light does not come on
and stay on, immediately install the rear-
facing child seat in a rear seating position
and have the airbag system inspected by
your Audi dealer.

Z\ WARNING
If, in exceptional circumstances, you must in-
stall 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 manu-
facturer for use on a front seat with a pas-
senger front and side airbag.

260
— Never put the forward-facing child restraint
up against or very near the instrument pan-
el,
— Always move the front passenger seat to the
highest position in the up and down adjust-
ment range and move it back to the rear-
most position in the seat's fore and aft ad-
justment range, as far away from the airbag
as possible, before installing the forward-
facing child restraint.
— Always make sure that the safety belt upper
anchorage is behind the child restraint and
not next to or in front of the child restraint
so that the safety belt will be properly posi-
tioned.
— 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 some-
one who is heavier than the person actually
sitting on the seat. The presence of addi-
tional objects could cause the passenger
front airbag to be turned on when it should
be off, or could cause the airbag to work ina
way that is different from the way it would
have worked without the object on the seat.
— Make sure that the PASSENGER AIR BAG
OFF light comes on and stays on all the time
whenever the ignition is switched on.
Advanced Airbag System components
The front passenger seat in your vehicle has a lot
of very important parts of the Advanced Airbag
System in it. These parts include the capacitive
passenger detection system, wiring, brackets,
and more. The control unit monitors the system
on the front passenger seat when the ignition is
switched on and turns the airbag indicator light
on
when a malfunction in the one of the system
components is detected > page 265. Because the
front passenger seat contains important parts of
the Advanced Airbag System, you must take care
to prevent it from being damaged. Damage to

>

8V2012721BK
Airbag system

the seat may prevent the Advanced Airbag Sys-
tem for the front passenger seat from doing its
job ina crash.
The front Advanced Airbag System consists
of the following:
— Crash sensors in the front of the vehicle that
measure vehicle acceleration/deceleration to
provide information to the Advanced Airbag
System about the severity of the crash.
— An electronic control unit, with integrated
crash sensors for front and side impacts. The
control unit “decides” whether to fire the front
airbags based on the information received from
the crash sensors. The control unit also “de-
cides” whether the safety belt pretensioners
should be activated.
— An Advanced Airbag with gas generator for the
driver inside the steering wheel hub.
— An Advanced Airbag with gas generator inside
the instrument panel for the front passenger.
— A capacitive passenger detection system under-
neath the front passenger seat cover. This sys-
tem measures the electrical capacitance of the
person in the seat. The information registered
is sent continuously to the electronic control
unit to regulate deployment of the front Ad-
vanced Airbag on the passenger side.
— An airbag monitoring system and indicator
light in the instrument cluster > page 265.
—Asensor in each front seat registers the dis-
tance between the respective seat and the
steering wheel or instrument panel. The infor-
mation registered is sent continuously to the
electronic control unit to regulate deployment
of the front Advanced Airbags.
— The PASSENGER AIR BAG OFF light comes on
and stays on in the center of the instrument
panel > page 304 and tells you when the front
Advanced Airbag on the passenger side has
been turned off.
—Asensor in the safety belt latch for the driver
and for the front seat passenger that senses
whether that safety belt is latched or not and
transmits this information to the electronic
control unit.


ZA WARNING
Damage to the front passenger seat can pre-
vent the front airbag from working properly.
— Improper repair or disassembly of the front
passenger and driver seat will prevent 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
put them on the seat. The capacitive passen-
ger detection mat in the front passenger
seat will not function properly if it is punc-
tured.
— Never carry things on your lap or carry ob-
jects on the front passenger seat. Such ob-
jects can
influence the capacitance regis-
tered by the capacitive passenger detection
system, so that incorrect information is pro-
vided to the airbag control unit.
— Never store items under the front passenger
seat. Parts of the Advanced Airbag System
under the passenger seat could be dam-
aged, preventing them and the airbag sys-
tem from working properly.
— Never place seat covers or replacement up-
holstery that have not been specifically ap-
proved by Audi on the front seats.
— Seat covers can prevent the Advanced Airbag
System from recognizing child restraints or
occupants on the front passenger seat and
prevent the side airbag in the seat backrest
from deploying properly.
—If a seat heater has been retrofitted or oth-
erwise added to the front passenger seat,
never install any child restraint system on
this seat.
— Never use cushions, pillows, blankets, or
similar items on the front passenger seat.
The additional layers prevent the capacitive

261

Airbag system


passenger detection system from accurately
measuring the capacitance of the child safe-
ty seat and/or the person on the seat and
thus keep the Advanced 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 passenger seat
if the device is connected to the 12-volt
socket or the cigarette lighter socket. Such
devices can influence the capacitance regis-
tered by the capacitive passenger detection
system, so that incorrect information is pro-
vided to the airbag control unit.
— If you must use a child restraint on the front
passenger seat and the child restraint man-
ufacturer's instructions require 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 restraint is installed on the front pas-
senger seat.
— If the PASSENGER AIR BAG OFF light does
not come on and stay on, immediately in-
stall child restraint in a rear seating position
and have the airbag system inspected by
your Audi dealer.


Z\ WARNING
If the front passenger seat gets wet, dry it im-
mediately.
— If liquid soaks into the front passenger seat,
this can keep the airbag system from work-
ing properly and may, for instance, deacti-
vate 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 Ea in the instru-
ment cluster.
— If liquid is pooled on the seat, but has not
soaked in, this may also keep the airbag sys-
tem from working properly and cause the
passenger frontal airbag to be enabled
(turned on), even though there is a properly
installed child restraint system on the seat.
Wet towels or other wet things on the seat

cushion can have the same effect. If the
front passenger frontal airbag is turned on,
the PASSENGER AIR BAG OFF light will turn
off.

How the Advanced Airbag System
components work together
The front Advanced Airbag System and the side
airbags supplement the protection offered by the
front three-point safety belts 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 important information about
safety and heed the WARNINGS in this chapter.
Deployment of the Advanced Airbag System and
the activation of the safety belt pretensioners de-
pend on the deceleration measured by the crash
sensors and registered by the electronic control
unit. Crash severity depends on speed and decel-
eration 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 front passenger frontal airbag will be
turned off if the electrical capacitance measured
by the capacitive passenger detection system on
the front passenger seat is less than the amount
programmed in the electronic control unit. The
front passenger frontal airbag will also be turned
off if the capacitance measured by the system for
the front passenger seat equals that of an infant
of about one year of age in one of the child seats
that was used to certify the Advanced Airbag Sys-
tem under Federal Motor Vehicle Safety Standard
208. The PASSENGER AIR BAG OFF light comes
on and stays on to tell you when the front Ad-
vanced Airbag System on the passenger side has
been turned off > page 265.

ZA WARNING
To reduce the risk of injury when an airbag in-
flates, always wear safety belts properly.
— If you are unrestrained, leaning forward, sit-
ting sideways or out of position in any way,
your risk of injury is much higher.
— You will also receive serious injuries and

could even be killed if you are up against the


262

8V2012721BK
Airbag system


airbag or too close to it when it inflates -
even with an Advanced Airbag > page 253.
TCM tee MoM dalla iol tLs
airbags



B4H-0271





Fig. 217 Inflated front airbags
Safety belts are important to help keep front seat
occupants in the proper seated position so that
airbags can unfold properly and provide supple-
mental protection in a frontal collision.
The front airbags are designed to provide addi-
tional protection for the chest and face of the
driver and the front seat passenger when:
— safety belts are worn properly,
— the seats have been positioned so that the oc-
cupant is properly seated
—and for adjustable head restraints: the head re-
straints have been properly adjusted.
Because airbags inflate in the blink of an eye with
great force, things you have on your lap or have
placed on the seat could become dangerous pro-
jectiles, and be pushed into you if the airbag in-
flates.
When an airbag deploys, fine dust is released.
This is normal 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 while the sup-
plemental airbag system is designed to reduce
the likelihood of serious injuries, other injuries,
for example swelling, bruising and minor abra-
sions, can also happen when airbags inflate. Air-
bags do not protect the arms or the lower parts
of the body. Front airbags supplement the three-
point safety belts only in some frontal collisions
in which the vehicle deceleration is high enough
to deploy the airbags.
Front airbags will not deploy:
— if the ignition is switched off when a crash oc-
curs,
— in side collisions,
—in rear-end collisions,
—in rollovers,
— when the crash deceleration measured by the
airbag system is less than the minimum thresh-
old needed for airbag deployment as registered
by the electronic control unit.
The front passenger airbag also will not
deploy:
— when the front passenger seat is not occupied,
— when the electrical capacitance measured by
the capacitive passenger detection system for
the front passenger seat indicates that the pas-
senger side frontal airbag must be switched off
by the electronic control unit (the PASSENGER
AIR BAG OFF light > page 265 and how they
work comes on and stays on).

ZA\ WARNING
Sitting in the wrong position can increase the
risk of serious injury in crashes.
—To reduce the risk of injury when the airbags
inflate, the driver and passengers must al-
ways sit in an upright position, must not
lean against or place any part of their body
too close to the area where the airbags are
located.
— Occupants who are unbelted, out of position
or too close to the airbag can be seriously in-
jured by an airbag as it unfolds with great
force in the blink of an eye > page 254.

ZA\ WARNING
A child in a rearward-facing child seat instal-
led on the front passenger seat will be seri-
ously injured and can be killed if the front air-
bag inflates - even with an Advanced Airbag
System.
— The inflating airbag will hit the child seat or
infant carrier with great force and will


263

Airbag system


smash the child 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 passenger seat because of
exceptional circumstances and the PASSEN-
GER AIR BAG OFF light does not come on
and stay on, immediately install the rear-
facing child seat in a rear seating position
and have the airbag system inspected by
your Audi dealer.


ZA WARNING
Objects between you and the airbag will in-
crease the risk of injury in a crash by interfer-
ing with the way the airbag unfolds or by be-
ing pushed into you as the airbag inflates.
— Never hold things in your hands or on your
lap when the vehicle is in use.
— Never transport items on or in the area of
the front passenger seat. Objects could
move into the area of the front airbags dur-
ing braking or other sudden maneuvers and
become dangerous projectiles that can
cause serious personal injury if the airbags
inflate.
— Never place or attach accessories or other
objects (such as cup holders, telephone
brackets, large, heavy or bulky objects) on
the doors, over or near the area marked
“AIRBAG” on the steering wheel, instrument
panel, seat backrests or between those
areas and yourself. These objects could
cause injury in a crash, especially when the
airbags inflate.
— Never recline the front passenger's seat to
transport objects. Items can also move into
the area of the side airbag or the front air-
bag during braking or in a sudden maneuver.
Objects near the airbags can become projec-
tiles and cause injury, particularly when the
seat is reclined.
— Never place or transport objects on the front
passenger seat. Objects on the front passen-
ger seat could cause the capacitive sensor in
the seat to signal to airbag system that the
seat is occupied by a person when it in fact is
not, or that the person on the seat is heavier
than he or she actually is. The change in
electric capacitance because of such objects
can cause the passenger front airbag to be
turned on when it should be off, or can
cause the airbag to work in a way that is dif-
ferent from the way it would have worked
without objects on the seat.
— 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 some-
one who is heavier than the person actually
sitting on the seat. The presence of an ob-
ject 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.


ZA\ WARNING
The fine dust created when airbags deploy can
cause breathing problems for people with a
history of asthma or other breathing condi-
tions.
—To reduce the risk of breathing problems,
those with asthma or other respiratory con-
ditions should get fresh air right away by
getting out of the vehicle or opening win-
dows or doors.
— If you are in a collision in which airbags de-
ploy, wash your hands and face with mild
soap and water before eating.
— Be careful not to get the dust into your eyes,
or into any cuts or scratches.
— If the residue should get into your eyes,
flush them with water.


264