2016 AUDI A5 COUPE sensor

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0 I­co .... .... A WARNING ,~
Improperly worn safety belts increase the risk
of serious personal injury and death whenever
a vehicle is being used.
- Always make sure that all vehicle occupants
are correctly restrained and stay in a correct
seating position whenever the vehicle is be­
ing used.
-Always read and heed all WARNINGS and
other important information
~ page 123.
Belt tensioners
How safety belt pretensioners work
In front, side and rear-end collisions above a
particular severity, safety belts are tensioned au­
tomatically.
The safety belts are equipped with safety belt
pretensioners. The system is activated by sensors
in front, side and rear-end collisions of great se­
verity. This tightens the belt and takes up belt
slack
~ .&. in Service and disposal of safety belt
pretensioneron page 127.
Taking up the slack
helps to reduce forward occupant movement dur­
ing a collision.
(JJ Note
Never let the belt remain over a rear seatback
that has been folded forward.
(D Tips
The safety belt pretensioner can only be acti­
vated once.
-The safety belt pretensioners do not deploy
in minor frontal, side and rear-end colli­
sions.
- 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 acti­
vated, 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 components
of the system are scrapped. An authorized
Safety belts
Audi dealer or qualified workshop is familiar
with these regulations and will be pleased
to pass on the information to you.
- Be sure to observe all safety, environmental
and other regulations if the vehicle or indi­
vidual parts of the system, particularly the safety belt or airbag, are to be disposed. We
recommend you have your authorized Audi
dealer perform this service for you.
Service and disposal of safety belt preten­
sioner
The safety belt pretensioners are parts of the
safety belts on your Audi. Installing, removing,
servicing or repairing of belt pretensioners can
damage the safety belt system and prevent it
from working correctly in a collision.
There are some important things you have to
know to make sure that the effectiveness of the
system will not be impaired and that discarded
components do not cause injury or pollute the
environment .
A WARNING
--
Improper care, servicing and repair proce-
dures can increase the risk of personal injury
and death by preventing a safety belt preten­
sioner from activating when needed or acti­
vating it unexpectedly:
- The belt pretensioner system can be activat­
ed only once. If belt pretensioners have
been activated, the system must be re­
placed.
- Never repair, adjust, or change any parts of
the safety belt system.
- Safety belt systems including safety belt
pretensioners cannot be repaired. Special
procedures are required for removal, instal­
lation and disposal of this system.
- For any work on the safety belt system, we
strongly recommend that you see your au­
thorized Audi dealer or qualified technician
who has an Audi approved repair manual, training and special equipment necessary .
127

Airbag syste m
greater detail below. Because the front passen ­
ger seat contains important parts of the Ad­
vanced Airbag System, you must take care to pre ­
vent it from being damaged. Damage to the seat m ay prevent the Advanced Airbag for the front
passenger seat from doing its job in a crash .
The front Advanced Airba g Sy stem con sists
of the follo wing :
-Crash sensors in the front of the vehicle that
measure vehicle acceleration/deceleration to
provide information to the Advanced Airbag
System about the seve rity of the crash .
- An electronic control un it, with integrated
crash sensors for front and side impacts . The
contro l unit "decides " whethe r to fire the front
airbags based on the information received from
the crash sensors. The control unit a lso "de­
cides" 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 steering
whee l hub .
- An Advanced Airbag with gas generator and
contro l valve inside the instrument pane l for
the front passenger .
- A weight -sensing mat under the upho lstery
padding of the front passenger seat cushion
that measures th e total weight on the seat . T he
information registered is sent continuously to
the e lec tronic control unit to regu la te dep loy­
ment of the front Advanced A irbag on the pas ­
senger side .
- An airbag monitoring system and indica tor
l ight in the instrument cluster
r=> page 139.
-A sensor in each front sea t registers the dis­
tance between the respective seat and the
steering wheel or instrument panel. The infor­ mation reg istered is sent continuous ly to the
electronic control u nit to regulate deployment
of the front Advanced A irbags.
- T he
PASSEN GE R AIR B AG OFF light comes on
and stays on in the center of the inst rument
pane l
c> page 139, fig . 134 and tells you when
the front Advan ced Airbag on the passenger
side has been turned off .
- A sensor below the safety belt la tch fo r the
front seat passenger to meas ure the tension on
136
the safety belt. The tension on the safety belt
and the weight reg istered by the weight-sens­
ing mat help the contro l unit "decide" whether
the front airbag for the front passenger seat
should be turned
off or not c> page 130, Child
restraints on the front seat -some important
things to know .
-A sensor 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 e lectronic
cont rol u nit.
_&. WARNING
Damage to the front passenge r seat can pre­
vent the front airbag from work ing properly .
- Improper repair or disassembly of the front
passenger and driver seat will prevent the
Advanced Airbag System from f unctioning
proper ly.
- Repairs to the front passenger seat mus t be
performed by qualified and proper ly trained
wo rkshop personne l.
- Never remove the front passenger or driver
seat from the vehicle.
- Never remove the upholstery from the front
passenger seat.
- Never d isassemble or remove pa rts from the
seat o r disconnect wi res from it.
- Never carry sharp objects in your pocke ts or
place them on the seat. If the weight-sens­
ing mat in the passenger seat is p unctured
it cannot work proper ly.
- Never carry things on your lap or carry ob­ jects on the passenger seat. Such items can increase the weight reg istered by the
weight-sensing mat and send the wrong in­
formation 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 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 child

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restraints or occupants on the front passen­
ger seat and prevent the side airbag in the
seat backrest from deploying properly.
- 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 accu­
rately registering the child restraint or per­
son on the seat and prevent the Advanced
Airbag System from functioning properly .
- 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 authorized Audi dealer .
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 with pretensioners
and load limiters and the adjustable head re­
straints to help reduce the risk of inju ry 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 act ivation of the safety be lt pretensioners de­
pend on the deceleration measured by the crash
sensors and regis tered 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 airbag will be turned off if the weight on
the passenger seat is less than the amount pro­ grammed in the elect ronic control unit. The front
Airbag system
airbag on the passenger side will also be turned
off if one of the child safety seats that has been
certified under Federal Motor Vehicle Safety
Standard 208 has been recognized on the seat.
The
PASSENGER AIR BAG OFF light comes on
and stays on to tell you when the front Advanced
Airbag on the passenger side has been turned off
q page 130, Child restraints on the front seat -
some important things to know .
_&. 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
airbag or too close to it when it inflates -
even with an Advanced Airbag
qpage 129.
More important things to know about front
airbags
Fig. 133 Inflated front airbags
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~
Safety belts are important to help keep front
seat occupants in the proper seated position so
that airbags can unfold properly and provide sup­
plemental 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 as far as possible
from the airbag, ..,.
137

Airbag system
The PASSENGER AIR BAG OFF light is located in
the center of the instrument panel
r::;, fig. 134.
The PASSENGER AIR BAG OFF light will come on
and stay on to tell you when the front Advanced
Airbag on the passenger side has been turned off
by the electronic control unit. Each time you turn
on the ignition, the
PASSENGER AIR BAG OFF
light will flash for a few seconds and:
- will stay on if the front passenger seat is not
occupied,
-will stay on if there is a small child or child re­
straint on the front passenger seat,
- will go out if the front passenger seat is occu­
pied by an adult as registered by the weight­
sensing mat.
The
PASSENGER AIR BAG OFF light must come
on and stay on
if the ignition is on and
- a car bed has been installed on the front seat,
or
- a rearward-facing child restraint has been in­
stalled on the front passenger seat , or
- a forward-facing child restraint has been instal­
led on the front passenger seat, or
- the weight registered on the front passenger
seat is equal to or less than the combined
weight of a typical 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.
If the front passenger seat is not occupied, the
front airbag will not deploy, and the
PASSENGER
AIR BAG OFF
light will stay on. Never install a
rearward-facing child restraint on the front pas­
senger seat, the safest place for a child in any
kind of child restraint is at one of the seating po­
sitions on the rear seat
r::;, page 130, Child re­
straints on the front seat -some important
things to know
and <=> page 151, Child safety.
If the PASSENGER AIR BAG OFF light comes on
when one of the conditions listed above is met,
be sure to check the light regularly to make cer­
tain that the
PASSENGER AIR BAG OFF light
stays on continuously whenever the ignition is
on . If the
PASSENGER AIR BAG OFF light does
140 not appear and not stay on all the
time, stop as
soon as it is safe to do so and
- reactivate the system by turning the ignition
off and then turning it on again ;
- remove and reinstall the child restraint. Make
sure that the child restraint is properly instal­
led and that the safety belt for the front pas­
senger seat has been correctly routed around
the child restraint as described in the child re­
straint manufacturer's instructions;
- make sure that the convertible locking retrac­
tor on the safety belt for the front passenger
seat has been activated and that the safety belt
has been pulled tight. The belt must not be
loose or have loops of slack so that the sensor
below the safety belt latch on the seat can do
its job
r::;, page 160 .
-make sure that things that may increase the
weight of the child and child safety seat are not
being transported on the front passenger seat;
- make sure that the safety belt tension sensor is
not blocked . Shake the safety belt latch on the
front passenger seat back and forth;
- If a strap or tether is being used to tie the child
safety seat to the front passenger seat, make
sure that it is not so tight that it causes the
weight-sensing mat to measure more weight
than is actually on the seat.
If the PASSENGER AIR BAG OFF light still does
not come on
and does not stay on continuously
(when the ignition is switched on),
- take the child restraint off the front passenger
seat and install it properly at one of the rear
seat positions. Have the airbag system inspect­
ed by your authorized Audi dealer immediately.
- move the child to a rear seat position and make
sure that the child is properly restrained in a
child restraint that is appropriate for its size
and age.
The
PASSENGER AIR BAG OFF light should NOT
come on when the ignition is on and an adult is
sitting in a proper seating position on the front
passenger seat.
If the PASSENGER AIR BAG OFF
light comes on and stays on or flashes for about
5 seconds while driving, under these circumstan-
ces, make sure that:
1111>

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@ For the sake of the environment
Undep loyed airbag modu les and pretension­
ers might be classified as Perchlorate Materi­
al -special handling may apply, see
www.dtsc .ca.gov/hazardouswaste/perchlo­
rate . When the veh icle or parts of the re­
straint system including airbag modules safe­
ty belts with pretensioners are scrapped, all
app licable laws and regulations must be ob­
served. Your authorized Audi dealer is familiar
w ith these req uirements and we recommend
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 the Advanced Airbag System pe rforms in a crash. For examp le, using tire-r im
comb inat ions not approved by Audi, lowering the
veh icle, chang ing the stiffness of the suspens ion,
including the springs, suspension struts, shock
absorbers etc . can change the forces that are
measured by the airbag sensors and sent to the
e lectronic control unit . Some suspension 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 deploy if
the changes had not been made . Other kinds of
changes may reduce the fo rce levels measured by
the sensors and prevent the airbag from deploy­ ing when it should.
A WARNING
Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance and in­
crease the risk of serious personal injury in a
crash.
- Never install suspens ion components that
do not have the same performance charac­
teristics as the components or iginally instal­
led on your veh icle.
- Never use tire-rim combinations that have
not been approved by Audi.
Airb ag sys tem
A WARNING
-Items stored between the safety belt buckle
and the center console can cause the sensors
i n the buckle to send the w rong information
to the electronic contro l modu le and prevent
the Advanced A irbag System from wo rking
p roperly.
- Always make sure that nothing can interfe re
with the safety belt buckles and that they are not obstructed.
Knee airbags
Description of knee airbags
Appl ies to vehicles: with knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants.
Fig. 13S D river 's knee ai rbag
T he driver knee airbag is in the ins trumen t panel
u nderneath t he steer ing whee l~
fig. 135, the
knee a irbag for the passenger is at abou t the
same height in the instrument pane l underneath
the g love compartment.
T he knee airbag offers add itiona l protec tion to
the driver's and passenger's knees and uppe r and
lower thigh areas and supp lements the protec­
tio n provided by the safety belts .
If the front airbags deploy, the knee airbags also
deploy in fron tal coll is io ns when the deploymen t
th reshold stored in the cont rol un it is met
~ page 13 7, More important things to know
about front airbags.
In add ition to their norma l safety fun ct ion, safe-
ty belts he lp keep the driver or front passenge r in ..,_
143

Airbag syste m
-the e lectronic contro l modu le and external side
impact sensors
- the two side airbags located in the sides of the
front backrests
- the a irbag warning light in the inst rument cl us-
ter.
The airbag system is monito red elect ronically to
make certa in that it is functioning properly at all
times. Each time you t urn on the ignit ion, the air­
bag system ind icator light will come on for a few
seconds (self diagnostics).
The s ide a irbag system supplements the safety
be lts and can help to reduce the risk of injury to
the driver's and front passenger's upper torso on
the side of the vehicle that is struck in a side col­
lision. The airbag deploys on ly in side impacts
and only when the vehicle acceleration registered
by the control unit is high enough. If this rate is
below the reference value programmed into the
control u nit, the s ide a irbags will not be tr ig­
gered, even though the car may be badly dam­
aged as a result of the collision.
It is not possib le
to define an airbag triggering range that w ill cov­
er every poss ible angle of impact, since the cir ­
cumstances will vary considerably between one
collision and another. Important factors include,
for examp le, the nature (hard or soft) of the im­
pacting object, the ang le of impact, vehicle
speed, etc. ¢
page 147, 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 pos it ion in the event of a s ide collision
so that the side a irbags can provide protection .
The airbag system is
not a substitute for your
safety belt. Rather, it is part of the overall occu­
pant restraint system in your vehicle . Always re­
member that the s ide airbag system can only
he lp to protect you if you are wearing your safety
be lt and wearing it properly. This is another rea­
son why you should always wear yo ur safety
be lts, not just because the law req uires you to do
so ¢
page 121, General information.
It is important to remember that whi le the sup­
p lemental side a irbag system is des igned to re­
duce the likelih ood of se rious injuries, other inju-
146 ries, for example, swelling, bruis
ing, and minor
abrasions can also be associated with deployed s ide a irbags . Remember too, s ide a irbags wi ll de­
ploy only once and only in certain k inds of acci­
dents - your safety belts are always there to offer
protect ion.
Vehicle damage, repair costs or even the lack of
vehicle damage are not necessar ily an ind ication
of over-sens itive or fa iled airbag activat ion. In
some collisions, both front and side airbags may i nflate . Remember too, that a irbags w ill deploy
o nl y once and only in certai n kinds of collisions -
you r safety be lts are always there to offe r protec­
tion in those accidents in wh ich airbags are no t
supposed to deploy or when they have a lready
deployed .
The side airbag system will not deploy:
-when the ign it io n is tu rned off
- in side collisions whe n the acceleration meas-
ured by the sensor is too low
- in front -end coll is ions
- in rear-end co llisions
- in rollovers .
In some types of ac cidents the front ai rbags, side
curtain airbags and side a irbags may be triggered
together.
A WARNING
- Safety belts and the airbag system will only
provide protect ion when occupants are in
the proper seat ing pos ition¢
page 147.
- If the airbag ind icator light¢ page 19
comes when the veh icle 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 will not inflate when it should.

Airbag syste m
by being pushed into you as the airbag in­
flates.
- Never p lace or attach accessories or other
objects (such as cupho lders, 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 in ju ry
when the supplemental side airbag de­ ploys.
- Never carry any objects or pets in the de­ ployment space between them and the
airbags or allow children or other passen­
gers to travel in this position.
- Always use the built-in coat hooks only for
lightweight clothing . Never leave any heavy
or sharp-edged objects in the pockets that
may interfere w ith side airbag deployment
and can cause personal i njury in an accident.
- Always prevent the side airbags from being
damaged by heavy objects knocking against
or hitting the sides of the seatbacks.
- The airbag system can only be triggered
once . If the airbag has been triggered, the
system must be replaced by an author ized
Audi dealership .
- Damage (cracks, deep scratches etc .) to the
original seat covers or to the seam in the
area of the side a irbag mod ule m ust always
be repa ired immed iate ly by an authorized
Audi dealer .
- If children are sea ted improperly, their r is k
of injury increases in the ca se of an ac cident
~ page 151, Child safety .
-Never attempt to modify any components of
the a irbag system in any way.
- In a side collision, side a irbags w il l not fu nc­
t ion properly if sensors cannot correct ly
measure increasi ng a ir pressure ins ide the
doo rs when air escapes through larger, un­
closed openings in the door panel.
- Never drive with inter io r door tr im panels
removed .
- Never drive when parts have been re ­
moved from the inside doo r panel and the
open ings they leave have not been proper­
ly closed.
148
- Never drive when loudspeakers in the
doors have been removed unless the
speaker holes have been properly closed.
- Always make certain that openings are
covered or filled if additional speakers or
other equipment is installed in the inside
door panels.
- Always have work on the doors done by an
authorized Aud i dealer 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. 139 Sid e curt ain system , drive r's s ide : side curtai n air ­
bag loca tion
The side curtain airbags are located on both sides
of the inter ior above the fro nt and rear side win­
dows ~
fig. 139. They are identified by the word
"AIRBAG" on the windshie ld frame and the cen­
ter roof p illar .
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 on the s ide of the vehicle that is struck in a side coll i­
sion. The side curta in a irbag inf lates in side im­
pacts and only when the vehicle accelera tion reg­
iste red by the control unit is high enough. If th is
rate is be low the refere nce value prog rammed in­
to the control unit, the side airbags will no t be
trigge red, even though the car may be badly
damaged as a resu lt of the co llision .
It is not pos­
sible to define an airbag triggering range that
will cover every possible angle of impact, since ..,.

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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.
¢ page 149 , 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 the side curtain airbags can provide protec­
tion .
The airbag system is not a subst itute for your
safety belt. Rather, it is part of the overa ll occu­
pant restraint system in your veh icle . Always re ­
member that the airbag system can only help to
p rotect you if you a re wea ring your safety belt
and wear ing it properly. Th is is anot he r reason
why you should always wea r your s afety be lts ,
not just because the law requires you to do so
¢ page 121, General information.
It is important to remember that wh ile the s ide
curta in a irbag system is des igned to he lp red uce
the likelihood of ser ious injuries, other in juries,
for example, swelling, bruising, and minor abra ­
sions can a lso be associated with these airbags .
Remember too, these a irbags w ill dep loy only
once and only in certa in kinds of acc idents -your
safety be lts are always there to offer protection.
The side curtain airbag sy stem ba sically
consists of :
-The electronic contro l module and external s ide
impact sensors
- The side curtain airbags above the front and rear s ide windows
- The airbag indicator light in the instrument
panel
The airbag system is monitored e lectronically to
make certain it is f unctioning properly at all
times. Each time you turn on the ignit ion, the air­
bag system ind icator light will come on for a few
seconds (self d iagnost ics).
The side curtain a irbag is not activated:
- if t he ignition is turned off,
- in s ide collisions when the acce lerat io n meas -
ur ed by the senso r is too low,
Airb ag sys tem
-in rea r-end col lisions,
- in rollover s.
A WARNING
-- Safety belts and the airbag system will only
provide protection when occupants are in
the proper seating posit ion
¢ page 54,
Seats and storage.
- If the ai rbag in dicator light¢ page 19
comes when the veh icle is being used, have
the system inspected immediately by your
author ized Audi dealer. It is possib le that
the airbag will inflate when it is not sup ­
posed to, or w ill not inflate w hen 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 .
E
Fig. 140 Ill us tratio n of prin cip le: Inflated s ide c urtain a ir ­
bags o n the left s ide
The side curtain airbags inflate between the oc ­
cupant a nd the w indows on the side of the ve hi­
cl e that is st ruck i n a side collision ¢
fig. 140.
When the system is t riggered, the s ide curta in
airbag is filled w ith propellant gas and breaks
th rough a seam above the front a nd rear side
windows iden tified by the AIR BAG label. In o rder
to help provide this addition al pro te ct ion, the
s ide cu rtain a irb ag m ust infl ate w ith in the blink
of a n eye a t ve ry high spee d and with g reat fo rce.
The side c urtain airbag cou ld injure you if yo ur
seating position is not prope r or upright or if
items are located in the area where the supple ­
mental s ide curtain a irbag inflates. This applies
especially to ch ildren
¢ page 151. ..,.
149