2021 AUDI A4 airbag off

Sitting correctly and safely

within milliseconds. Inflated airbags reduce the
movement of passengers wearing safety belts in
the direction of the impact and thus help to re-
duce the risk of injury. They can help to protect
the head, upper body, and lap, for example. How-
ever, there is the possibility that airbag deploy-
ment can cause injuries.
The airbag system only works when the ignition
is turned on.
If you or other vehicle passengers have physical
limitations that prevent sitting in a correct posi-
tion, modifications to the vehicle may be neces-
sary. For more information, contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty, or call Audi customer support at
1-800-822-2834.
@) Tips
The side curtain airbags in your vehicle have
ejection mitigation functions. This reduces
the risk of being ejected from the vehicle inte-
rior during an accident, especially in the event
of a vehicle rollover.
Advanced airbag system

Fig. 69 Headliner: indicator light to display the status of
the front passenger's airbag
The Advanced Airbag System in your vehicle has
been certified to comply with the requirements
of the United States Federal Motor Vehicle Safety
Standard (FMVSS) 208, as well as Canada Motor
Vehicle Safety Standard (CMVSS) 208 as applica-
ble at the time your vehicle was manufactured.
According to these requirements, the front Ad-
vanced Airbag System on the passenger’s side
has been certified for “suppression” for infants
approximately 12 months old and younger, and
74
for “low risk deployment” for children aged 3 to
6 years old (as defined in the standard).
The advanced airbag system will activate or deac-
tivate the front passenger's airbag based on the
occupancy of the seat. If a front airbag deploys
during an accident, the deployment force will
adapt to the passenger.
Components
The advanced airbag system consists of the fol-
lowing components:
— Front airbags in the steering wheel and in the
instrument panel on the front passenger's side:
these can protect the front passengers during
an accident
— Passenger occupant detection sensor in the
front passenger's seat: this detects if the front
passenger's seat is occupied (for example, by a
person or asmall child in a child safety seat)
— Seat position sensors on the front seats: these
determine the distance between the seat and
the steering wheel or instrument panel
— Sensors in the front seat belt latch: these de-
tect if the safety belts are fastened
— PASSENGER AIR BAG OFF ; ON ® indi-
cator light in the headliner:this indicates if the
front passenger's airbag is activated or deacti-
vated
- ka indicator light in the instrument cluster:
this monitors the function of the Advanced Air-
bag System components to ensure they are
functioning correctly
How the components function together
The passenger occupant detection sensor in the
front passenger's seat detects if the front pas-
senger's seat is occupied. The passenger occu-
pant detection sensor measures the electrical ca-
pacity on the front passenger’s seat. The pas-
senger's airbag is activated or deactivated de-
pending on the electrical capacity that is meas-
ured.
The passenger's airbag is activated if:
— The electrical capacity is higher than the
threshold stored in the control module

8W1012721BC
Sitting correctly and safely

— The electrical capacity is the same as or greater
than the electrical capacity of a typical adult
The passenger's airbag is deactivated if:
— The electrical capacity is lower than the thresh-
old stored in the control module
— The electrical capacity is the same as or less
than the electrical capacity of a typical one-
year-old child in a child safety seat that has
been used for certification in accordance with
FMVSS 208
If the front passenger's airbag is activated, the
PASSENGER AIR BAG ON @ indicator light
will turn on. If the front passenger's airbag is de-
activated, the PASSENGER AIR BAG OFF #;
indicator light will turn on.
The deployment force of the front airbags adapts
based on whether or not the safety belt is used
and the distance between the seat and the steer-
ing wheel/instrument panel. For example, if a
person is too close to the front airbag, the front
airbag will deploy with less force to help reduce
the risk of injury.
Meaning of PASSENGER AIR BAG OFF 3; ON
® indicator light
When the ignition is switched on, the system de-
tects whether the front passenger's seat is occu-
pied. PASSENGER AIR BAG OFF #; ON @
will turn on for several seconds during this proc-
ess. Then it will indicate whether the front pas-
senger's airbag is activated or deactivated.
— PASSENGER AIR BAG OFF #%%;: the front
passenger's airbag is deactivated and will not
deploy in the event of an accident.
— PASSENGER AIR BAG ON ®:: the front pas-
senger's airbag is activated and could deploy in
the event of an accident.
If a change to the occupancy status of the front
passenger's seat is detected
PASSENGER AIR BAG OFF #, ON @ will
flash for several seconds and will then display the
status of the front passenger's airbag.
Always make sure the indicator light corresponds
to the occupancy of the front passenger's seat.
— An adult or individual of similar size in the
front passenger's seat: the front passenger's
airbag must be activated, therefore
PASSENGER AIR BAG ON @ must remain
turned on.
— An individual of smaller size (for example, an
adolescent or small adult) in the front pas-
senger's seat: the front passenger's airbag
must be activated, so
PASSENGER AIR BAG ON @ must stay on.
— Child in a child safety seat on the front pas-
senger's seat: the front passenger's airbag
must be deactivated, so
PASSENGER AIR BAG OFF #¥; must stay on.
— Front passenger's seat not occupied: the front
passenger's airbag must be deactivated, so
PASSENGER AIR BAG OFF %; must stay on.

Z\ WARNING
— An adult or a person with a small stature
(such as a young person or small adult) seat-
ed on the front passenger's seat will not be
protected by the passenger's airbag in the
event of a collision if the passenger's airbag
is deactivated. This increases the risk of in-
jury and death. Always make sure that
PASSENGER AIR BAG ON @ remains on
while driving. If
PASSENGER AIR BAG ON @ does not
turn on, make sure the front passenger is
sitting correctly in the seat > page 63 and
that there is nothing covering the front pas-
senger's seat (such as blankets or pillows).
If PASSENGER AIR BAG ON ®@ still does
not turn on, the front passenger's seat must
not be used. Drive to an authorized Audi
dealer or authorized Audi Service Facility
and have the airbag system inspected.
—Achild ina child safety seat on the front
passenger's seat - especially in a rear-facing
child safety seat - can receive a severe im-
pact if the front passenger's airbag deploys,
which increases the risk of serious or fatal
injury. Always secure child safety seats on
the rear seats. If special circumstances re-
quire the use of a child safety seat on the
front passenger's seat, always make sure

75

Sitting correctly and safely


that PASSENGER AIR BAG OFF #; stays
on while driving. If
PASSENGER AIR BAG OFF #¥; does not
turn on, remove the child safety seat and in-
stall it again according to the child safety
seat manufacturer instructions. If
PASSENGER AIR BAG OFF &%; still does
not turn on, the front passenger's seat must
not be used. Drive to an authorized Audi
dealer or authorized Audi Service Facility
and have the airbag system inspected.
— Fluids, electronic devices, or mechanical
damage on the front passenger's seat may
cause the front passenger seat occupant de-
tection to malfunction. The system may
then incorrectly detect if the front passeng-
er's seat is occupied. As a result, it could de-
ploy the front passenger’s airbag incorrectly
or fail to deploy it, which increases the risk
of serious or fatal injury. Make sure that no
wet objects (such as a wet hand towel) and
no fluids come into contact with the front
passenger's seat cushion. If the front pas-
senger's seat becomes wet, dry it immedi-
ately. Make sure no electronic devices (such
as a laptop or a retrofitted seat heater) are
on the front passenger's seat. Do not trans-
port any objects on or under the front pas-
senger's seat.
— Seat covers or protective covers may prevent
the advanced airbag system from correctly
detecting child safety seats or passengers in
the front passenger's seat. You must not use
seat covers or protective covers on the front
passenger's seat that are not specifically ap-
proved for use on Audi seats with an ad-

vanced airbag system.

Child safety seats
General information
When installing and using child safety seats, fol-
low the information in this Owner's Manual, the
applicable state and federal regulations, and the
manufacturer instructions for the child safety
seat.
76
You can also obtain useful and current informa-
tion from the following sources:
U.S. National Highway Traffic Safety Adminis-
tration
http://www.nhtsa.gov
http://www.safercar.gov
National SAFE KIDS Campaign
http://www.safekids.org
SafetyBeltSafe U.S.A.
http://www.carseat.org
Transport Canada Information Centre
http://www.tc.gc.ca/roadsafety
Audi Customer Experience Center
https://www.audiusa.com/help/contact-us
https://www.audi.ca/ca/web/en/models/layer/
contact.html

Z\ WARNING
To reduce the risk of serious or fatal injuries,
children must always be secured in the vehicle
with a child safety seat that is appropriate for
their body size, weight, and age.
— Children ages 12 and under must be trans-
ported using the appropriate child safety
seat. Note differences in regulations be-
tween states and countries.
— Child safety seats secured incorrectly in the
vehicle may cause serious or fatal injuries in
the event of an accident. Always secure the
child safety seat according to the manufac-
turer instructions.
— Children or babies must not under any cir-
cumstances be held on the lap of the driver
or other passengers while driving.
— Do not secure more than one child in a child
safety seat.
— Never allow a child to sit in a child safety
seat unsupervised.
— Never allow children to ride unsecured in the
vehicle or to stand or kneel on the seats
while driving. In the event of an accident, a
child could be propelled through the vehicle.
This can cause serious or fatal injuries for
the child and passengers.
— If children use an incorrect seating position

while driving, they have a higher risk of

8W1012721BC
Sitting correctly and safely



injury during a sudden braking maneuver or
accident. This especially applies to children
in the front passenger's seat or children who
have their head near the side airbag deploy-
ment area, if the airbag system is deployed
during an accident. This incorrect seating
position can cause severe or even fatal inju-
ries.
Make sure there is enough space in front of
the child in the child safety seat. If necessa-
ry, adjust the angle and position of the seat
in front of the child safety seat.
The rear side of a forward-facing child safety
seat should be positioned as close as possi-
ble to the backrest on the vehicle seat. If the
head restraints make it difficult to install a
child safety seat, adjust or remove them if
necessary > page 67. Reinstall the head re-
straints immediately once the child safety
seat has been removed.
Always make sure that the backrest on the
seat where the child safety seat is installed
is securely locked in place and cannot move
forward. Otherwise, the backrest where the
child safety seat is secured could move for-
ward in the event of an accident or other
emergency situation.
NEVER use a rear-facing child safety seat on
a seat with an ACTIVATED FRONT AIRBAG;
this could cause DEATH or SERIOUS INJU-
RIES to a CHILD.
— Always secure child safety seats on the
rear seats. If exceptional circumstances re-
quire the child safety seat to be placed on
the front passenger's seat, then the front
passenger's airbag must be deactivated.
Always make sure that
PASSENGER AIR BAG OFF %; stays on
while driving. If
PASSENGER AIR BAG OFF %; does not
turn on, remove the child safety seat and
install it again according to the child safe-
ty seat manufacturer instructions. If
PASSENGER AIR BAG OFF 4%; still
does not turn on, the front passenger's
seat must not be used. Drive to an author-
ized Audi dealer or authorized Audi Service

Facility and have the airbag system in-
spected.
— If you must use a forward-facing child safety
seat on the front passenger's seat, move the
seat as far back as possible so that it is as
far as possible from the front passenger's
airbag. While doing this, make sure the seat
can be adjusted all the way. A child in a child
safety seat on the front passenger's seat can
receive a severe impact if the front passeng-
er's airbag deploys, which increases the risk
of serious or fatal injury.
— Replace the child safety seat after an acci-
dent because there could be damage that is
not visible.
— Even if a child is not sitting in the child safe-
ty seat, the child safety seat must be se-
cured. An unsecured child safety seat may
be thrown through the vehicle interior dur-
ing sudden braking maneuvers or an acci-
dent.
(ee aca em Letitia m imate)
Always secure children in a child safety seat de-
signed for the body size, weight, and age of the
child.

You can secure child safety seats in your vehicle
using the lower LATCH anchors or the safety
belts. You can also secure child safety seats to
the top tether anchor. Depending on the child
safety seat, it may also be necessary to secure it
to the top tether anchor. In Canada, securing for-
ward-facing child safety seats to the top tether
anchors is required by law.
Always transport children in the rear seats
Accident statistics show that children that are se-
cured correctly in the rear seats are safer than in
front seats. Always transport children in suitable
child safety seats secured on the rear seats.
In exceptional circumstances: transporting
children in the front passenger's seat
If exceptional circumstances require the child
safety seat to be placed on the front passenger's
seat, then the front passenger's airbag must be
deactivated. Please note the important
77
>

Sitting correctly and safely


belt retractor lock on the safety belt is acti-
vated if the child safety seat manufacturer
instructions require it.
— Due to the risk of fatal injury, never place a
rear-facing child safety seat on the front
passenger's seat when the front passenger's
airbag is switched on.
— For the child safety seat to offer the maxi-
mum protection, it is especially important
to route the vehicle safety belt correctly. Al-
ways follow the instructions from the child
safety seat manufacturer for routing the
safety belt correctly. Incorrectly fastened
safety belts can cause injuries, even during
minor accidents.

lly securing a child safety seat to
the top tether a


RAZ-0325
Fig. 71 Version @ rear shelf / Version @) rear backrest: top
tether anchors for securing a child safety seat with an up-
per strap
80
RAZ-0093


Fig. 72 Version @ rear shelf / Version @ rear backrest: se-
curing the upper strap on the top tether anchor
Observe the safety precautions > page 76.
There is a top tether anchor behind every seat in
the rear bench seat to additionally secure a child
safety seat with an upper belt.
> Move the head restraint behind the child safety
seat upward.
> Applies to: version 1: Fold the cover for the top
tether anchor upward.
> Guide the upper belt on the child safety seat
under the head restraint or along both sides of
it and toward the rear (depending on the child
safety seat model).
> Fasten the belt to the top tether anchor
=> fig. 72. While doing this, make sure the belt
is not twisted and is not running over any sharp
edges.
> Secure the child safety seat according to the
child safety seat manufacturer instructions.
> Pull the belt tightly so that the child safety seat
rests at the top of the seat backrest.
> If necessary, move the head restraint behind
the child safety seat downward.

8W1012721BC
Driver assistance

steering correction cannot be set, the steering
correction will function in the Late setting.
— Vibration warning - You can select if you would
also like to be warned using a vibration in the
steering wheel.
@) Tips
Certain settings are automatically stored and
assigned to the remote control key being
used.
Applies to: vehicles with Audi active lane assist
iff or is displayed when there is a malfunc-
tion, the active lane assist functions may be un-
available or limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or the cam-
era may be covered. Clean the area in front of the
camera > page 119 and try to turn on the sys-
tems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
Audi pre sense
Introduction
Applies to: vehicles with Audi pre sense
Within the limits of the system, the Audi pre
sense functions can initiate measures in certain
driving situations to protect the vehicle occu-
pants and other road users. Depending on the ve-
hicle equipment, various Audi pre sense systems
may
be installed:
— Audi pre sense basic can react during emergen-
cy and dangerous braking maneuvers and un-
stable driving situations (such as oversteering
or understeering).
— Audi pre sense city and Audi pre sense front
can detect an impending frontal impact and re-
act with warnings, braking interventions, and
preemptive safety measures for the vehicle oc-
cupants.
— Audi pre sense rear monitors the rear traffic
behind your vehicle and can react to an impend-
ing rear impact.
— The swerve assist can help you to steer the ve-
hicle around an obstacle during an evasive ma-
neuver that is detected as critical.
— The turn assist can detect vehicles in the oppo-
site lane as critical during a turning maneuver
and react with braking maneuvers.
Audi pre sense safety measures
Applies to: vehicles with Audi pre sense
Depending on the vehicle speed and the vehicle
equipment, the following functions may be initi-
ated in certain situations:
— Visual and audio warnings
— Reversible tensioning of safety belts
— Closing the windows and panoramic glass roof
— Adjusting the seats
— Other preemptive safety measures by individual
systems

ZA\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
G) Tips
— Depending on the risk situation that is de-
tected and the selected Audi drive select*
mode, not all preemptive safety measures
may be initiated under certain circumstan-
ces. Certain functions can be adjusted or
skipped if necessary.
— Audi pre sense may also be limited or un-
available under certain circumstances, for
example if:

— There are passengers with unfastened
safety belts
— After turning on the ignition, as long as
the FJ or indicator light is on.
— When driving in reverse.
— The front passenger's airbag is switched
off
— There is an airbag control module mal-
function

143

Fuses and bulbs






Fuse panel @) (brown) Fuse panel (© (black)
14 | Fuel injectors, engine control module 11 Left rear door control module, left rear
15 |Ignition coils, heated oxygen sensors power window
16 | Fuel pump 12 | Parking heater
Fuse panel (®) (red) Fuse panel (0) (black)
No. | Equipment No. | Equipment

Anti-theft alarm system

Front seat electronic, seat ventilation,
rearview mirror, rear climate control sys-

































tem control panel, windshield heating, di-
agnostic connection
2 Diagnostic interface, vehicle electrical sys-
tem control module
3 |Sound generator
4 |Clutch position sensor
5S |Engine start, emergency shut-off
6 Diagnostic connection, traffic information
antenna (TMC)
7 |USB input
8 |Garage door opener
9 Audi adaptive cruise control, distance reg-
ulation
11 | Front camera
12 | Right headlight
13 | Left headlight
14 | Transmission fluid cooling
Fuse panel (©) (red)
No. | Equipment
1 {Ignition coils
2 |Climate control system compressor
S |Left headlight
6 |Automatic transmission
7 |Instrument panel
8 | Climate control system blower
9 |Right headlight
10 | Dynamic steering
11 | Engine start



2 | Engine control module
3 Left front seat electronics, lumbar sup-
port, massaging seat
4 | Automatic transmission selector lever
5 |Horn
6 |Parking brake
7 | Diagnostic interface
8 | Roof electronics control module
9 |Emergency call module
10 | Airbag control module
11 Electronic Stabilization Control (ESC), An-
ti-Lock Braking System (ABS)
12 | Diagnostic connection, light/rain sensor
13 | Climate control system
14 | Right front door control module
15 | Climate control system compressor
16 | Brake system pressure reservoir
Fuse panel (©) (black)
No. | Equipment
Front seat heating
2 |Windshield wipers
Left headlight electronics
4 Panoramic glass roof / sliding/tilting sun-
roof
5 |Left front door control module
6 | Sockets
7 Right rear door control module, right rear
power window
All wheel drive control module
9 | Right headlight electronics
10 Windshield washer system/headlight

washer system control module

274