2017 AUDI A5 CABRIOLET sensor

Driving safety
-the safety belts with belt tensioners
- the windshield frame
- the rollover sensors
The active rollover protection system provides
additional safety in the event of a rollover. With­
in milliseconds, sensors deploy two rollbars lo­
cated behind the headrests in the rear seats
¢fig. 132 .
The rollbars, reinforced windshield frame and
belt tensioners help protect front and rear pas­
sengers in the event of a rollover.
The rollover protection system functions when
the power top is both open and closed.
A WARNING
Do not use the area behind the rear seat
headrests
¢fig. 131 as a storage area. This is
the area where the rollbars deploy.
If the roll­
over protection system is triggered, objects
placed there can be propelled through the ve­
hicle and make it more difficult for the roll­
bars to deploy. This increases the risk for seri­
ous or life-threatening injuries.
When is rollover protection deployed?
Rollover protection deploys in o collision or roll­
over.
Depending on the collision, sensors throughout
the vehicle and the control module trigger the
ro llov er system to deploy.
Fo r safety reasons, rollover protection also de­
ploys during front, side and rear collisions above
a certain level of severity.
120
Retracting rollover protection
Fig. 133 Deployed rollbar wit h release loop.
Fig. 134 Deployed rollbar wit h power top frame facing up­
ward .
If the rollover protection has triggered but the
vehicle was not involved in an accident, you can
retract the rollover protection yourself in an
emergency. Drive to your authorized Audi dealer
or qualified repair facility immediately to have
the malfunction corrected.
With the power top open
... Pull the loop upward in the direction of the ar­
row and hold it in place~
fig. 133.
... Slide the rollbar down.
... Release the loop just before the rollbar reaches
its end position by approximately 1-2 in. (3-5
cm) .
.,. Press the rollbar down until it stops .
.,. Make sure the rollbar is secure before releasing
it .
.,. Close the cover @¢
fig. 134 .
.,. Repeat the procedure on the other rollbar.
With the power top closed
... Switch the ignition on .
.,. Press the convertible switch to adjust the con-
vertible frame until it is vertical¢
fig. 134. .,._

Safe ty belts
Unfastening safety belts
Unbuckle the safety belt with the red relea se
button only after the vehicle has stopped .


Fig. 145 Rele asing th e to ngu e fro m the buck le
.. Push the red release button on the buckle
Q fig. 145 . The belt tongue will spring out of
the buckle
Q ,& .
.. Let the belt wind up on the retractor as you
guide the belt tongue to its stowed position.
A WARNING
Never unfasten safety belt while the vehicle is
moving . Doing so will increase your risk of be­
ing injured or k il led.
Improperly worn safety belts
a
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Incorrectly positioned safety belts can cause se­
vere injuries .
Wearing safety belts improperly can cause seri­
ous injury or death . Safety belts can only work
when they are correctly positioned on the body .
Imp roper seating positions reduce the effect ive­
ness of safety belts and wi ll
even i ncrease the
risk of injury and death by mov ing the safety bel t
to cr it ica l areas of the body. Imp roper seating
positions a lso increase the risk of se rio us inj ury
and death when an airbag deploys and strikes an
occupant who is not in the correct seating pos i­
tion . A
drive r is responsible fo r the safety of all
veh icle occupants and especially for children.
Therefore:
.. Never permit anyon e to assume an incorrect
sitting position in the vehicle whi le traveling
Q A .
128
A WARNING
Improperly worn safety belts increase the risk
of ser ious personal injury and death whenever
a veh icle is being used .
- Always make sure that all veh icle occupants
are cor rectly restrained and stay in a correct
seating position whenever the vehicle is be­ ing used.
- Always read and heed all WARNINGS a nd
other impo rtant informat ion
Q page 124 .
Belt tensioners
How safety belt pretensioners work
In front, side and rear-end collisions above a
particular sev erity, saf ety belts are tensioned au­
tomatically .
The safety belts are eq uipped w ith safety belt
pretensioners. The system is activa ted by sensors
in front, side and rear -end collisions of great se­
verity. This tightens the be lt and takes up belt
s lack
Q .&. in Service and disposal of safety belt
pretensioner on page 129 .
Taking up the slack
helps to reduce forward occupant movement dur­
i ng a collis ion .
@ Note
Never let the belt remain over a rear seatback
that has been folded forward.
@ Tips
The sa fety belt pretensioner can only be acti­
vated once .
- The safety belt pretensioners do not deploy
in minor frontal, side and rear -end coll i­
sions.
- When the safety belt pretensioners are acti­
vated, a f ine dust is released. This is normal
and is not caused by a fire in the veh icle.
- The relevant safety requirements must be
observed when the vehicle or components
of the system are scrapped. An authorized
Audi dealer or qua lified workshop is familiar
w ith these regu lations and will be pleased
to pass on the information to you. .,._

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greater detail below. Because the front passen­
ger seat contains important parts of the Ad­
vanced A irbag System, you must take care to pre ­
vent it from being damaged. Damage to the seat
may prevent the Advanced Airbag for the front
passenger seat from doing its job in a crash .
The front Ad vanced Airb ag S ystem con sis ts
of the follo wing :
-Crash sensors in the front of the vehicle that
measure vehicle acceleration/decelerat io n 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
contro l 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 be lt pretensioners
shou ld be activated.
- An Advanced Airbag with gas generator and
contro l valve for the driver inside 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 the total weight on the seat . The
information registered is sent continuously to
the electron ic control unit to regulate deploy­
ment of the front Adva need A irbag on the pas­
senger side.
- An airbag monitoring system and indicator
light i n the instrument cluster
¢page 140.
-A sensor in each front seat registers the dis­
tance between the respective seat and the
steering wheel or instrument panel. The infor­
mation reg istered is sent cont inuous ly to the
electronic control unit to regulate deployment
of the fro nt Adv a need A irbags.
- T he
PASS EN GE R AIR BAG OFF light comes on
and stays on in the center of the instrument
pane l¢
page 140, fig . 149 and tells you when
the front Advanced Airbag on the passenge r
side has been turned off.
- A sensor below the safety belt latch fo r the
front seat passenger to meas ure the tension on
Airb ag sys tem
the sa fety belt. The tension on the safety belt
and the weight registered by the weight-sens­
ing mat help the control unit "decide" whether
the front airbag for the front passenger seat
should be turned off or not¢
page 131, 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 t he electronic
cont rol un it.
_& WARNING
Damage to the front passenge r seat can pre­
vent the front airbag from working properly.
- Imp roper repair or disassembly of the front
passenger and driver seat will p revent the
Advanced Airbag System from f unctioning
properly.
- Repairs to the front passenger seat must be
performed by qualified and properly trained
workshop 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 o r remove par ts from the
seat o r disconnect w ires from it.
- Never carry sh arp objects in your pocke ts or
p lace them on the seat. If the weight-sens­
ing mat in the passenger seat is punctu red
it cannot work proper ly.
- Never carry things on your lap or carry ob­
jects on the passenger seat. S uch 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, p reventing them and the airbag sys­
tem from working p roper ly.
- Never p lace seat covers or replacement up­
holstery that have not been specifically ap­
p roved by A udi on the front seats.
- Seat covers can prevent the Advanced A ir­
bag System from recognizing chi ld
137

Airbag syste m
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-sens ing mat in the seat from accu­
rately reg istering the ch ild restraint or per­
son on the seat and prevent the Advanced
Airbag System from funct ioning prope rly.
- If you must use a child restraint on the front
passenge r seat and the child restraint man­
ufact urer's instructions require the use of a
towel, foam cushion or something else to properly position the chi ld restraint, make
certain that the
PASSENGER A IR BAG OFF
light comes on and stays on whenever the
child restraint is installed on the front pas­
senger seat.
- If the
PAS SENGER AIR BAG O FF 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
you r authorized Aud i deale r.
How the Advanced Airbag System
components work together
The front Advanced Airbag System and the side
ai rbags supplement the protection offered by the
front three-point safety belts with pretensioners and load limiters and the adjustable head re ­
stra ints to help reduce the r isk 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 th is 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 we ll as the mass and stiffness of the
vehicle or object involved in the crash.
On the passenger s ide, regardless of safety belt
use, the a irbag will be t urned off if the weight on
the passenge r seat is less than the amount p ro­
g rammed in the e lectron ic cont rol unit . T he front
1 38
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 recogn ized on the seat.
The
PAS SEN GER AI R BA G OFF light comes on
and stays on to te ll you when the front Advanced
Airbag on the passenger side has been turned off
¢ page 131, Child restraints on the front seat ­
some important things to know .
.&_ WARNING
To reduce the risk of injury when an airbag in­
f lates, always wear safety belts properly.
- I f you are unrestrained, leaning forward, sit­
ting sideways or ou t of position in any way,
your ris k of injury is much highe r.
- You will a lso receive ser ious injuries and
could even be killed if yo u are up against the
airbag or too close to i t when it inflates -
even with an Advanced Airbag
r::!;>page 130.
More important things to know about front
airbags
Fig. 14 8 Inflated front a irbags
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Safety be lts are important to help keep front
seat occupants in the proper seated position so
that airbags can unfo ld properly and prov ide sup­
plemental protection in a fronta l co llision.
The front airbags a re 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,
- t he seats have been positioned so that the oc-
cupant is properly seated as far as possib le
from the airbag,
Ill-

The PASSENGER AIR BAG O FF light is located in
the c enter of the instrument panel¢
fig. 149 .
The PASS ENGER 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 el ectronic control unit . Each time you turn
on the ignition, the
P ASSENGER 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 the re is a sma ll child or child re­
straint on the front passenger seat,
- wi ll go out if the front passenge r seat is occu ­
pied by an adult as registered by the weight­
sensing mat .
The
PA SSENGER AIR BAG O FF light mu st c ome
on and sta y on
if the igni tion is on and
- a car bed has been insta lled on the front seat,
o r
- a rearward-facing child restrai nt has been in­
stalled on the front passenger seat , or
- a forward -facing child restra int has been instal ­
led on the front passenger seat, or
- the weight reg istered on the front passenger
seat is equal to or less than the comb ined
weight of a typical 1 yea r-o ld restrained in one
of the rear-facing or forward-fac ing infant re­
strain ts listed in Federal Motor Vehicle Safety
Standard 208 w ith which the Advanced A irbag
System in your vehicle was certified.
I f the front passenger seat is no t occupied, the
fron t air bag w ill not deploy, and the
PASSENGER
AIR BAG OFF
light will stay on . Never install a
rearward -fac ing child restraint on the front pas ­
senger s eat, the safest p lace for a child in any
kind of child restraint is at one of the seating po­
sitions on the rear seat ¢
page 131, Child re­
s train ts on the front sea t-some impor tan t
things to know
and ¢ page 1 SO, Child safety .
If the PASSENGER AIR BAG OFF light comes on
when one of the condit ions listed above is met,
be sure to check the light regularly to make cer-
gi tain that the PASSENGER AIR BA G OFF light ......
~ stays on cont inuously whenever the ign ition is
~ on . If the PASSENGER A IR BAG OFF lig ht does
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Airb ag sys tem
not appear and not stay on all the time, stop as
soon as it is safe to do so and
- react ivate the system by tur ning t he ignit ion
off and then t urn ing it on again ;
- remove and re insta ll th e chi ld restrain t. M ake
sure that the chi ld restraint is properly ins ta l­
led and that the safety belt for the front pas­
senger seat has bee n correct ly routed around
the child restraint as desc ribed in the c hild re­
straint manufacture r's instruct ions;
- make sure that the convertible locking retrac­
tor on the safety belt for the front passenge r
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
¢ page 159.
-make sure that th ings that may increase the
weight of the child and ch ild safety seat are not
be ing transported on the front passenger seat ;
- make sure that the safety belt tens ion sensor is
not b locked . Shake the safety belt la tch on the
front passenger seat bac k 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 t hat i t causes the
weight-sensing mat to me asu re more weight
than is actua lly on the sea t.
If the PASSENGER AIR BAG OFF light still do es
not come on
and does not stay on co nti nuously
(whe n the ignition is switched on),
- take the child restraint off the front passenge r
seat and install it p roper ly at one of the rear
seat pos itions . Have the airbag system inspect­
ed by yo ur au thori zed Aud i deale r immedi ately .
- move the child to a rear seat pos ition and ma ke
sure that t he chi ld is proper ly rest rained in a
child restra int that is appropr iate for its s ize
and age .
T he
PASSENGER AIR BAG OFF lig ht should NOT
come on when the ignit io n is on and an adu lt is
s itting in a prope r seat ing pos ition on the front
passenge r seat. If the
PASSENGER AIR BAG OFF
light comes on and stays on or flashes for about
5 seconds whi le dr iv ing, under these c ircumstan-
ces, make sure that :
Ill-
141

Airbag system
@ For the sake of the environment
Undeployed 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 vehicle or parts of the re­
straint system including airbag modules safe­
ty belts with pretens ioners are scrapped, all
applicable laws and regulat ions must be ob­
served. Your authorized Audi dealer is familiar
with these requirements 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
cha nge the way that the Advanced Airbag System
pe rforms in a crash. For example, using tire-r im
comb inat ions not approved by Audi, lower ing the
veh icle, changing the stiffness of the suspens ion,
including the spr ings, suspension struts, shock
absorbers etc . can change the forces that are
measured by the airbag sensors and sent to the
electronic control 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 deploy if
the changes had not been made. Other ki nds of
changes may reduce the force levels measured by
the sensors and preven t 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 A irbag performance and in ­
crease the risk of serious personal injury in a
crash.
- Never install suspension components that
do not have the same performance charac­
teristics as the components originally insta l­
led on your veh icle .
- Never use tire-rim comb inations that have
not been approved by Audi.
144
A WARNING
Items stored between the safety belt buckle
and the center console can cause the sensors in the buckle to send the wrong information
to the electronic control module and prevent
the Advanced A irbag System from working
properly.
- Always make sure that nothing can inte rfe re
w ith the safety belt buckles and that they
are not obstructed.
Knee airbags
Description of knee airbags
Applies to: vehicles with knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants.
Fig. 150 Driver's knee a irbag
The driver knee airbag is in the instrument panel
underneath the steering whee l~
fig. 150, the
knee airbag for the passenger is at about the
same height in the instrument panel underneath
the g love compartment.
The knee airbag offers additional protection to
the driver's and passenger's knees and uppe r and
l ower thigh areas and supp lements the protec­
tion provided by the safety belts .
If the front airbags deploy, the knee airbags also
deploy in frontal collis ion s when the deployment
th reshold stored in the control unit is met
~ page 138, More important things to know
about front airbags.
In addition to their normal safety funct ion, safe-
ty belts help keep the driver or front passenger in
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-the e lectron ic control modu le and externa l side
impact sensors
- the two side airbags located in the sides o f the
front backrests
- the a irbag warning light in the inst rument cl us-
ter.
The a irbag system is monitored electronically to
make certa in that it is func tioning properly at all
times. Each time you turn on the ignit ion, the air­
bag system indicator light will come on for a few
seconds (self diagnostics).
The s ide a irbag system supp lements the safety
be lts and can help to reduce the risk of injury to
the driver's and fron t passenger 's upper torso on
the side of the vehicle that is struck in a side col­ lision. The airbag d eploys on ly in side impacts
and only when the veh icle acceleration reg istered
by the contro l unit is high enough. If this rate is
below the reference value programmed into the
control un it, the s ide a irbags w ill not be tr ig­
gered, even though the car may be badly dam­
aged as a resu lt of the collision .
It is not possib le
to define an airbag trigge ring range that w ill cov­
e r every possible angle of impact, since the ci r­
cumstances wi ll vary considerably between one
collision and another. Important factors include,
for examp le, the nature (hard or soft) of the im ­
pacting objec t, the ang le of impact, vehicle
speed, etc. ¢
page 148, Impor tant safety in­
structions on the side airbag system .
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 side collision
so that the s ide a irbags can provide protection .
T he airbag system is
not a substitute for your
safety belt. Rather, it is part of the overa ll occu­
pant restrain t system in your veh icle. Always re­
member that the s ide a irbag system can only
h elp to protect yo u if you a re wearing your safety
be lt and wea ring it properly. This is another rea­
son why you s hou ld always wear yo ur safety
be lts, not just bec ause the law req uires yo u to do
so ¢
page 122 , General information.
It is important to remember that wh ile the s up­
p lemental s ide a irbag system is designed to re­
d uce the likelih ood of serious injur ies, other inju-
Airb ag sys tem
ries, for example, swelling, bru is ing , and minor
abrasions can also be associated wit h deployed
s ide airbags . Remember too, s ide airbags will de­
ploy only once and only in certain k inds of acci­
den ts -your safety belts are always there to offer
protect io n.
Vehicle damage, repair costs or even the lack of
vehicle damage are not necessar ily an ind ication
of over-sens it ive or fa iled a irbag activation. In
some collisions, both front and side airbags may i nflate. Remember too, that a irbags w ill deploy
only once and only i n certa in kinds of collisions -
you r safety be lts are always there to offer protec­
t ion in those accidents in wh ich airbags are no t
s u pposed to deploy or when they have already
deployed .
The side airbag system will not deploy:
-when t he ignit ion is t urned 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 collisions
- in rollovers.
In some types of accidents the fron t air bags and
s ide airbags may be triggered togethe r.
.&, WARNING ~
- Safety belts and the airbag system will only
provide protect ion when occupants are in
the proper seat ing pos ition ¢
page 148 .
-If the ai rbag ind icator light¢ page 17
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 .
147

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by being pushed into you as the airbag in­
flates.
- Never place or attach accessories or other
objects (such as cupholders, 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 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 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 authorized
Audi dealership.
- Damage (cracks, deep scratches etc.) to the
original seat covers or to the seam in the
area of the side airbag module must always
be repaired immediately by an authorized
Audi dealer.
- If children are seated improperly, their risk
of injury increases in the case of an accident
~ page 150, Child safety.
-Never attempt to modify any components of
the airbag system in any way.
- In a side collision, side airbags will not func­
tion properly if sensors cannot correctly
measure increasing air pressure inside the
doors when air escapes through larger, un­
closed openings in the door panel.
- Never drive with interior door trim panels
removed.
- Never drive when parts have been re­
moved from the inside door panel and the
openings they leave have not been proper­
ly closed.
- 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
Airbag system
other equipment is installed in the inside
door panels.
- Always have work on the doors done by an
authorized Audi dealer or qualified work­
shop.
149