2017 AUDI A6 sensor

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" N .... 0 0 <..:l ' switched on and turns the airbag indicator light
on when a malfunction in the one of the system
components is detected
c::> page 159. 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 the seat may p revent the Advanced
Airbag System for the front passenger seat from
doing its job in a crash.
The f ront Ad vanc ed Airb ag System con sists
of the following:
- Crash sensors in the front of the vehicle that
measu re vehicle accelerat ion/ decelerat io n to
provide info rmation to the Advanced Airbag
System about the severity of the crash.
- An electro nic cont rol un it, with integrated
c rash senso rs fo r front and side impacts. The
contro l unit "decides" whether to fire the fro nt
airbags based on the information received from
the crash sensors . The contro l unit a lso "de­
c ides" whether the safety be lt pretensioners
shou ld be activated .
- An Advanced Airbag with gas generator and
contro l valve for the driver ins ide the steer ing
wheel hub.
- An Advanced Airbag with gas generator and
contro l valve inside the instrument panel for
the front passenger.
- A capac itive passenger detect ion system under­
neath the front passenger seat cover. This sys­
tem measures the electrical capac itance of the
person in the seat . T he information registered
i s sent conti nuous ly to the electro nic cont rol
unit to regulate deployment of the front Ad­
vanced Airbag on the passenge r side.
- An airbag monito ring system and indicator
li gh t in the ins trument cluster
c::> page 159.
-A sensor i n each front seat registers the dis­
tance between the respective seat and the
stee ring wheel or instrument pane l. The info r­
mation reg istered is sent cont in uous ly to the
electronic control unit to regulate deployment
of the front Adv a need Ai rbags.
- The
PASSENGER AIR BAG OFF light comes on
and stays on in the center of the instrument
pane l
c::> page 159, fig. 156 and tells you when
Airb ag sys tem
the front Advanced Airbag on the passenger
side has been turned off .
- A sensor in the safety belt latch for the driver
and for the front seat passenger that senses
whether that safety be lt is latched or not and
transmits this information to the electronic
control un it.
A 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 p revent the
Advanced Airbag System from funct io ni ng
p roper ly .
- Repairs to the front passenger seat must be pe rformed by qualified a nd p roperly trained
wo rkshop personne l.
- Never remove the front passenger or driver
seat from the vehicle .
- Never remove the upholste ry from the front
passe nger seat.
- Never d isassemble or remove parts from the
s e at o r disco nnect w ire s from it.
- Never carry sharp objects in your pockets or
put them on the seat. The capacit ive pas­
senge r de tect io n 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 passenge r seat. S uch ob­
jects c an influen ce the cap aci tance reg is­
t ered by the capaci tive passenger dete ction
sys tem, so that incorrect in formation is pro ­
vided to the ai rbag control un it.
- Never store i tems unde r the front p assenger
seat . Parts of the Advanced Airbag System
under the passenger seat cou ld be dam­
aged, p reventing them and the airbag sys­
tem from working proper ly.
- Never p lace 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 A ir­
bag System from recognizing chi ld re­
stra ints or occupants on the front passenger
seat and preven t the side airbag in the seat
backrest from deploying prope rly .
155

Airbag system
A 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.
A 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 "A IRBAG" on the steering wheel, instru­
ment 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-
158
-
bag during braking or in a sudden maneu­
ver. Objects near the airbags can become
projectiles and cause injury, particularly
when the seat is reclined.
- Never place or transport objects on the
front passenger seat. Objects on the front passenger 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 different 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.
A 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 .

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Monitoring the
Advanced Airbag System
~ (USA models) /!.f (Canada models)
Airbag monitoring indicator light
Two separate indicators monitor the function of
the Advanced A irbag System: the airbag moni­
toring indicator light and the
PASSENGER AIR
BAG OFF
ligh t.
The Advanced Airbag System as we ll as the side
a ir bags and side curtain airbags with eject ion
mitigation features (including the e lectronic con­
trol unit, sensors and system w iring) are all
monitored co nti nuously to make sure that they
are funct io ni ng properly whenever the ignition is
on . Every t ime you turn on the ignition , the air­
bag system ind icator light
1B (USA models) ! E,I
(C an ada models) will come on for a few seconds
(f unction check).
The system must be inspected when the
indicator light
II ( USA models) Jfll
( Canada models) :
-does not come on when the ignition is switched
on,
- does not go out a few seconds after you have switched on the ign ition, or
- comes on w hile d riving .
I f an airbag system malf unct ion is detected, the
i ndicator lig ht w ill c ome on to se rve as a consta nt
reminder to h ave the system inspected immedi­
a tely .
I f a malfunction occurs that turns the front air­
bag on the passenger side off , the
PASSENGER
AIR BAG OFF
light will come on and stay on
whenever the ignit io n is on .
A WARNING
An airbag system that is not functioning prop­
er ly cannot provide supp lemental protection
in a frontal crash .
- If the airbag indicator l ight
c:::> page 17
comes when the vehicle is be ing used, have
the system inspected immed iate ly by your
authorized Aud i dealer. It is possible that
Airbag system
the airbag will inflate when it is not sup­
posed to, or w ill not inf late w hen it should.
PASSENGER AIR BAG OFF light
F ig . 1 56 Sect io n from t he inst ru m en t panel: PASSENGER
AIR BAG O FF light
The PASS ENG ER AIR BAG OFF light is located in
the center of the inst rument panel
c:::> fig . 156 .
The PASSENGER AIR BAG OFF light w ill come on
and stay on to tell you when the front Advanced
Airbag on the passenger side has been turned off by the electronic contro l unit. If the b ulb for the
PASSENGER AIR BAG OFF light bur ns out, the
airbag indicato r ligh t
fl (USA models) Q (Can­
ad a mode ls) will come on to signa l a mal func tion
i n the Advanced Airbag Sys tem. Although the
burned -out bulb will not change the way the
front passenger 's fronta l airbag works, it wi ll no
l onger be poss ible to use the
PASSENGER AIR
BAG OFF
light to make sure that the a irbag on/
off status is correct for the occupant on the front
passenger seat . Have the airbag system inspect ­
ed immediately by your author ized Audi dealer.
The PASSENGER AIR BAG OFF light will blink
for about
S seconds when:
- the ignit ion is switched on and
- the capacit ive passenger detection system,
which switches the front seat passenger's fron­
tal Advanced Airbag on and off, detects a
change in the status of the front passenger
seat .
As soon as the
PASSENGER AIR BAG OFF light
stops blinking, always make sure that the airbag
status (on or off) as shown by the
PASSENG ER
AIR BAG OFF
lig ht is proper for the age, size and
electrical capacitance of the person occupying
liJJ>
159

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must be performe d by qualified workshops
only. Make sure that any airbag service ac­
tion is entered in your Audi Warranty
&
Maintenance booklet under AIRBAG RE­
PLACEMENT RECORD.
- For safety reasons in severe accidents, the
alternator and starter are separated from
the vehicle battery with a pyrotechn ic circuit
interrupter.
- Work on the pyrotechnic circ uit interrupt­
er must only be performed by a qualified
technicians who have the experience, in­
formation and special tools necessary to
perform the work safely.
- If the veh icle or the c ircuit interrupter is
scrapped, all app licable safety precautions
must be followed .
@) For the sake of the environment
Undeployed airbag modu les and pretension­
ers might be classified as Perch lorate Materi­
al - special handling may apply, see
www.dtsc .ca.gov/hazardouswaste/perchlo­
rate. When the veh icle or parts of the re­
strai nt system including airbag modules and
safety bel ts wit h pretensione rs are scrapped,
all a ppli cable laws and regulations mus t be
observed. Your a uthorized Audi dealer is fa­
m iliar with these requirements and we recom ­
mend that you have your dealer perform this
service for you.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that t he Advanced Airbag System
pe rforms in a crash. For examp le, using tire-r im
comb inat ions no t approved by Audi, lowering the
ve hicle, changing the s tiffness of the suspens ion,
includ ing the springs, suspension struts, shock
absorbers etc . can change the forces that are
measured by the airbag sensors and sent to the
e lectronic contro l unit . Some suspens ion changes
can, for example, increase the force levels meas­
ured by the sensors and make the airbag system
deploy in crashes in wh ich it would not dep loy if
the changes had no t been made. Other kinds of
Airb ag sys tem
changes may red uce the force levels measured by
the sensors and prevent the airbag from deploy­
i ng when it sho uld.
A WARNING
=
Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance a nd in­
crease the risk of serious personal injury in a
crash.
- Never install suspension components that do not have the same performance charac­
ter istics as the components origina lly instal­
led on you r vehi cle.
- Never use tire-rim combinations that have
not been approved by Audi.
Knee airbags
Description of knee airbags
Applies to: vehicles wi th knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants .
Fig. 1 57 Dr iver 's k nee a irbag
The driver knee airbag is in the instrument panel
underneath the s teer ing whee l~
fig . 157, the
airbag fo r the passenger is at abou t the same
heig ht in the i nstr ume nt p ane l underneath the
glove compa rtment.
The knee airbag offers add itiona l protection to
t h e d river's and passenge r's knees and uppe r and
l ower thigh areas a nd supplements the p rotec­
t ion prov ided by the safety bel ts .
If the front airbags deploy, the knee a irbags also
deploy in frontal coll is ions when the deploymen t
Iii--
163

Airbag system
The side airbags are located in the sides of the
front seat backrests¢
fig. 159 and the rear back­
rest facing the doors. They are identified by the
word "AIRBAG".
The side airbags installed for the front seating
positions have been designed and certified to
he lp reduce the risk of injury that can be caused
by airbags when they inflate, particularly when
the occupant sitting next to it is not seated prop­
erly. The side a irbag for the front passenger seat
can be used with properly installed child re­
stra ints . Please be sure to read the important in­
formation and warnings whenever using a child
rest raint in a veh icle: Safety belts¢
page 139,
Airbag system ¢page 147, Child safety
¢ page 171.
The side airbag system basically consists of:
-the electronic control modu le and external side
impact sensors
- the two airbags located in the sides of the front
backrests and the two airbags* located in the
rear backrest
- the a irbag warning light in the instrument clus-
ter.
The airbag system is monitored electronically to make certain that it is functioning properly at all
times. Each time you switch on the ign ition, the
airbag system indicator light will come on for a
few seconds (self diagnostics).
The s ide air bag system supplements the safety
belts and can help to reduce the risk of injury to
the dr iver's, front and rear passenger's upper tor­
so on the side of the vehicle that is struck in a
side collision. The a irbag dep loys only in side im­
pacts and only when the vehicle acceleration reg­
istered by the control unit is high enough. If this
rate is below the reference value programmed in­
to the control unit, the side airbags wi ll not be
triggered, even though the car may be bad ly
damaged as a result of the collision. It is not pos­
sible to def ine an airbag tr igger ing range that
will cover every possible angle of impact, since
the circumstances will vary cons iderably between
one collision and another. Important factors in­
clude, for example, the nature (h ard or soft) of
the impacti ng object, the angle of impact, vehicle
166
speed, etc. ¢ page 167, Important safety in­
structions on the side airbag system .
Aside from their normal safety function, safety
belts work to help keep the driver or front pas­
senger in position in the event of a side collision
so that the side airbags can provide protection .
The airbag system is
not a substitute for your
safety belt . Rather, it i s part of the overall occu­
pant res traint system in your vehicle . Always re ­
member that the side airbag system can only
help to protect you if you are wear ing your safety
belt and wearing it properly. This is another rea­
son why you should a lways wear your safety
belts, not just because the law requires you to do
so¢
page 139, General information .
It is important to remember that while the sup­
plemental side airbag system is designed to re­
duce the likelihood of ser ious injuries, other inju­
ries, for example, swelling, bru is ing, friction
burns and minor abrasions can also be assoc iated
with deployed side airbags. Remember too, side
a irbags w ill deploy only once and only in certa in
kinds of accidents -your safety belts are always
there to offer protection.
Vehicle damage, repair costs o r even the lack of
vehicle damage are not necessarily an ind icat ion
of over-sens itive or fa iled airbag activation. In
some collisions, both front and side airbags may
inflat e. Remember too, that airbags w ill deploy
on ly once and only in certain kinds of collisions -
your safety be lts are always there to offer protec­
tion in those accidents in which airbags are not
supposed to deploy or when they have already
deployed .
The side airbag system will not deploy:
- when the ignition is switched off
- in side co llisions when the acceleration meas -
ured by the sensor is too low
- in front-end collisions
- in rea r-end collisions
- in rollovers.
In some types of accidents the front airbags, side
curta in airbags and side a irbags may be triggered
together .
Iii>

Airbag syste m
-Damage to the origina l seat covers or to
the seam in the area of the side airbag
module must always be repaired immedi­
ately by an authorized Audi dealer.
- Objects between you and the airbag can in­
crease the risk of injury in an accident by in­
terfering with the way the airbag unfolds or by being pushed into you as the a irbag in­
flates.
- Never place or attach accessories or other
objects (such as cup holders, telephone
brackets, or even large, bulky objects) on
the doors, over or near the area marked
"AIRBAG" on the seat backrests.
- Such objects and accessories can become
dangerous projectiles and cause injury
when the supplemental s ide airbag de­
ploys.
- Never carry any objects or pets in the de­
ployment space between them and the
a irbags or allow chi ldren o r othe r passen­
gers to travel in th is posit ion.
- Always use the built-in coat hooks only for
lightweight cloth ing . Never leave any heavy
or sharp-edged objects in the pockets that
may interfere w ith side airbag dep loyment
and can cause personal in jury in an accident .
- Always prevent the side airbags from being
damaged by heavy objects knoc king agains t
or hitting the sides of the seatbacks.
- T he airbag system can only be triggered
once . If the a irbag has been triggered, the
system must be replaced by an authorized
Audi dealership.
- Damage (cracks, deep scratches etc.) to the
original seat covers or to the seam in the
area of the side airbag modu le must always
be repaired immediately by an authorized
Audi dealer.
- If children are seated improper ly, their risk
of injury increases in the case of an acc ident
¢ page 171, Child safety.
- Never attempt to modify any components of the a irbag system in any way.
- In a side collision, side airbags w ill not func­
t ion properly if sensors cannot correctly
measure increasing a ir pressure ins ide the
168
doors when air escapes through larger, un­
closed openings in the door panel.
- Never dr ive with inte rior door trim panels
r emoved.
- Never dr ive when parts have been re­
moved from the inside door pa nel and the
openings they leave have not been proper­
l y closed.
- Never dr ive when loudspeakers in the
doo rs have been removed unless the
speaker holes have been properly closed .
- Always make ce rtain that open ings are
cove red or filled if additional speakers or
othe r equipment is installed in the inside
door panels .
- Always have wor k on the doors done by an
authorized Aud i dea ler or q ualified work ­
shop .
Side curtain airbags
Description of side curtain airbags
The side curtain airbag system can provide sup­
plemental protection to properly restrained oc­
cupants .
Fig. 16 1 Sid e curta in airbags , driver 's side: side curtain air­
bag location
The side curtain airbags are located on both sides
of the inter ior above the front and rear side win­
dows ¢ fig . 161. They are identified by the word
"A IRBAG" on the windshield frame.
The side curtain airbags contain features that provide ejection mitigation to help prevent ve hi­
cle occupants or parts of the ir bodies from be ing
completely or part ially ejected from the veh icle
i nterior in certain side impacts and vehicle roll­
overs .

The side curtain airbag system supplements the
safety belts and can help to reduce the risk of in­
jury for occupants' heads and upper torso. The
side curtain airbag inflates in side impacts and
only when the vehicle acce leration registered by
the control unit is high enough . If this rate is be ­
l ow the reference value programmed into the
control unit, the side curtain airbag will not be
tr iggered, even thoug h the car may be bad ly
damaged as a resul t of the collision.
It is not pos­
sib le to define an airbag triggering range that
will cover every possible angle o f impact, since
the circumstances wi ll vary considerably between
one co llision and another. Important factors in­
clude, for example, the nature (hard or soft) of
the impacting object, the angle of impact, vehicle speed, etc.
c> page 169, How side curtain air ­
bags work.
Aside from their normal safety function, safety
be lts work to help keep the driver or front pas­
senger in posit ion in the event of a collision so
that t he side curta in airbags can provide protec­
tion .
The airbag system is not a substitute for your
safety belt . Rather, it is part of the overall occu­
pant restraint system in your veh icle . Always re­
member that the airbag system can only help to
protect you if you are wearing your safety belt
and wear ing it properly . T his is another reason
why you should always wear your safety belts,
not just because the law requires you to do so
¢ page 139, General information.
It is important to remember that while the side
curta in airbag system is designed to help reduce
the likelihood of serious injuries, other injuries,
for example, swelling, bruising, friction burns
and minor abrasions can also be associated with
these airbags upon deployment . Remember too,
these airbags will deploy only once and only in
certa in kinds of accidents -your safety belts are
always there to offer protection .
The side curtain airbag system basically
consists of:
co ~ - The electronic control module and external s ide
N ~ impact sensors
.... 0 0 <.,;) 'SI"
Airbag system
- The side curta in airbags above the front and
rear side windows with ejection mitigation fea­
tures
- The airbag indicator light in the instrument
panel
T he airbag system is mon itored electron ically to
make certain it is functioning properly at all
times. Each time you switch on the ignition, the
airbag system ind icator light wi ll come on for a
few seconds (self diagnostics) .
The side curtain airbag is not activated:
-if the ignition is switched off,
- in side collisions when the acceleration meas-
ured by the sensor is too low,
- in rear-end col lisions.
_& WARNING
- Safety belts and the airbag system will only
provide protection when occupants are in
the proper seating position
¢ page 50,
Seats and storage.
- If the airbag indicator light¢ page 17
comes when the vehicle is being used, have
the system inspected immediately
by your
author ized Audi dealer. It is possible that
the airbag will inflate when it is not sup­
posed to, or w ill not inflate when it should.
How side curtain airbags work
Side curtain airbags can work together with side
airbags to help reduce the risk of head and upper
torso injuries for occupants who are properly re­
strained.
Fig. 162 Illustration of principle: Inflated s ide cu rta in air·
bags on the left s ide
Ill>
169

Tire pressure monitoring system
Applies to: vehicles with Tire Pressure Monitoring System in­
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction .
Fig. 192 Instrument clus ter : indicator ligh t w ith message
Using the ABS sensors, the tire pressure monitor­
ing system compares the tire tread circumfer­
ence and vib ration characteristics of the individu­
al tires.
If the pressure changes in one or more
tires, this is indicated in the instrument cluster
display with an indicator light
RE and a message.
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored in the Infotain ­
ment system again each time the pressures
change (switching between partial and full load pressure) or after changing or replacing a tire on
your vehicle ¢
page 230 . The tire pressure moni ­
toring system only monitors the tire pressure you have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
¢page 220, fig.191 .
Tire tread circumference and v ibration character­
istics can change and cause a tire pressure warn­
ing if:
- the tire pressure in one or more tires is too low.
- the tire has structural damage.
- the tire was replaced or the tire pressure was
changed and it was not stored
¢ page 230.
- the spare tire* is installed.
~ Indicator lights ....
~ RE-Loss of pressure in at least one tire¢,&,. . ....
g Check the tires and replace or repair if necessary.
<.,;) 'SI"
Wheels
Check/correct the pressures of all four tires and
store the pressure again in the Infotainment sys­
tem
¢ page 230 .
fflm (T ire Pressure Monitoring System) Tire
press ure: System malfunction!.
Ifffi:m appears
after switching the ignition on or while driving
and the
RE indicator light in the instrument clus­
ter blinks for approximately one minute and then
stays on, there is system malfunction. Try to
store the correct tire pressures¢
page 230. If
the indicator light does turn off or turns on again
after a short period of time , drive to an author­
ized Audi dealer or author ized Audi Service Facili­
ty immediately to have the malfunction correct­
ed.
_& WARNING ,..___
- If the tire pressure indicator appears in the
d isplay, reduce your speed immediately and
avoid any hard steering or braking maneu­
vers. Stop as soon as possible and check the
tires and their pressure.
- The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
- Under certain conditions (such as a sporty
driving style, winter conditions or unpaved roads), the tire pressure monitoring system
indicator may be delayed .
@ Tips
-The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function .
- Using snow chains may result in a system
malfunction.
- The tire pressure monitoring system in your
Audi was calibrated with "Audi Original
Tires"¢
page 217 . We recommend that you
use these tires.
229