2018 AUDI S3 SEDAN Owners Manual

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-Yo u will also receive serious injuries and
cou ld even be killed if you are up aga inst the
airbag or too close to it when it inflates
-
even with an Advanced Airbag 9 page 269 .
More important things to know about front
airbags
F ig. 238 Inf lated fro nt a irbags
Safety belts are important to help keep front
seat occupants in the proper seated position so
that airbags can unfold prope rly and provide sup­
p lemental pro tection in a frontal collision.
The front airbags are designed to provide add i­
tional protect ion for the chest and face of the
d river 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,
- and for adjustable head restraints: the head re-
straints have been properly adjusted.
Because airbags inflate in the blink of an eye with
g reat fo rce, things you have on your lap or have
p laced on the seat cou ld become dangerous pro­
jectiles, and be pushed into you if the airbag in­
flates .
W hen an airbag deploys, fine dust is released.
This is normal and is not caused by a fire in the
veh icle. This dust is made up mostly of a powder
used to lubricate the airbags as they deploy . It
could irr itate skin .
It is important to remember that whi le the sup ­
p lemental a irbag system is designed to reduce
the likelihood of ser ious injuries, other injuries,
for example swel ling, bruising and minor abra -
Airbag system
sions, can also happen when airbags inflate . Air­
bags do not protect the arms or the lower parts
of the body. Front airbags supp lement the three ­
po int safety belts only in some frontal collisions
in which the vehicle dece leration is high enough
to dep loy the airbags .
Front airbags will not depl oy :
- if the ignition is switche d off when a crash oc-
curs,
- in side co llisions,
- in rear -end co llisions,
- in rollovers,
- when the crash decele ration measured by the
airbag system is less than the m inimum thresh­
old needed for airbag dep loymen t as registe red
by the electronic con trol un it.
The front passenger airbag also w ill not
deploy:
- when the fron t passenger seat is not occupied,
- when the e lectr ica l capacitance measured by
the capacit ive passenger detection system for
t he front passenge r seat ind icates that the pas­
senger side frontal airbag must be switched off
by the e lectronic control unit (the
PASSENGER
AIR BAG OFF
light c::> page 281 and how they
work comes on and stays on).
A WARNING
Sitting in the wrong position can increase the
risk of ser ious injury in crashes.
- To reduce the r isk o f injury when the airbags
inflate, the driver and passengers must al­
ways sit in an upright posit ion, m ust not
lean aga inst or place any part of their body
too close to the area where the airbags are located.
- Occupants who are unbelted, out of position
or too close to the airbag can be serio usly
i n jur ed by an airbag as it unfolds with g reat
for ce in the blink of an eye
c::> page 2 70. jll,,,
279

Airbag syste m
A WARNING
A child in a rearward-facing child seat instal­
led o n the front passenger seat will be ser i­
ously injured and can be k ille d if the front air­
bag in flate s - even with an Advanced Airbag
System.
- The inflating a irbag w ill hit the child seat or
infant carrier w ith great force and will
smash the ch ild seat and child against the
backrest, cente r arm rest, door or roof.
- Always install rear-facing child seats on the
rea r seat.
- If you must install a rearward fac ing ch ild
seat on the front passenger seat because of
exceptional c ircumstances and the
PASSEN­
GER AIR BAG OFF
light does not come on
and stay on, immediately insta ll 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 a irbag w ill in­
crease the risk of in jury in a crash by interfer­
ing w ith the way the airbag unfolds or by be­
ing pushed into you as the a irbag inflates.
- Never hold th ings in your hands or on your
lap when the vehicle is in use .
- Never transport items on or in the area of
the fron t passenger seat . Objects could
move into the area of the front airbags du r­
ing bra king or other sudden maneuve rs and
become dangerous projec tiles that c an
ca use serious pe rsonal injury if the a irbags
inflate.
- Never pl ace or attach accessor ies or o ther
objects (such as cup ho lders, te lephone
brackets, large, heavy or bulky objects) on
the doors, over or nea r the area marked
"AIRBAG" on the steering wheel, instru­
ment pane l, seat backrests or between
those areas and yourself. These objects could cause injury in a crash, especially
when the airbags infla te.
- Never recline the front passenger's seat to
transport objects . Items can also move into
the a rea of the side airbag o r the front a ir-
280
bag du ring brak ing o r in a sudden maneu­
ver. Objects near the airbags can become pro jecti les and cause injury, part icularly
when the seat is reclined .
- Never p lace 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 ai rbag system
that the seat is occ upied by a person when it
in fact is no t, or that the pe rson on the seat
is he avie r th an he or she act ually is. The
change in electric capacitan ce beca use of
such objects can cause the passenge r front
airbag to be turne d 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
wo rked without objects on the seat.
- Always make sure that there is noth ing on
the front passenger seat that will cause the
capacitive passenger detection system in
the sea t to signal to the Airbag System that
the seat is occup ied by a person when it is
not, or to signal that it is occupied by some­
one who is heavier th an the person actu ally
si tting on the sea t. The presence of an o b­
ject could ca use the passenger front air bag
to be turned on when it should be off, or
could cause the airbag to work in a way that is diffe rent 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 prob lems for people with a
h istory of asthma or othe r breath ing cond i­
tions .
- To reduce the r isk of breathing p roblems ,
those wi th asthma o r other respiratory con­
ditions sho uld get fresh a ir rig ht away by
getting out of the vehi cle or opening win­
dows or doors.
- If you are in a co llision in which airbags de­
ploy, w ash yo ur hands and f ace with m ild
soap and water be fore eating.
- Be ca refu l not to get the dust into your eyes,
or into any cuts or scratches.
- If the residue sho uld get into your eyes,
flush them w ith wate r.

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Monitoring the
Advanced Airbag System
Airbag monitoring indicator light
Two separate indicators monitor the fun ction of
the Advanced Airbag System : the
El ligh t and
t he
PASSENGER AIR BAG OFF light.
The Advanced Airbag System as we ll as the side
a ir bags and side curta in airbags with ejec tion
m it iga tion feat ures ( incl udi ng t he e lectro nic con­
tro l unit, sensors and system wiring) are all
monitored co nti nu ously to ma ke sure that they
are funct ion ing prope rly whenever the ignition is
on. Every t ime yo u turn on the ignition, the air ­
bag system ind icator
light E,lwill come on for a
few seconds (function check).
The system mu st be inspected when the
indicator light
E,I:
- does not come on when the ignit ion is switched
on,
- does not go out a few seconds after you have
switched on the ign ition, o r
- comes on w hile driving.
If an airbag sys tem malf unct ion is de tected, the
indicator light w ill come on to serve as a co nstant
rem inder to have the system inspected immedi­
ately .
If a mal function occurs t hat turns the front air ­
bag on the passenger si de
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 funct ion ing prop­
er ly cannot provide supplemental p rotection
in a frontal crash .
- If the airbag indicator light¢
page 26
comes when the vehicle is be ing used, have
the sys te m inspect ed immed iate ly by yo ur
au tho riz ed Au di dealer.
It is possible that
t h e air bag will in flate w hen it i s n ot su p­
p osed to, o r will not infla te whe n it s hou ld.
Airbag system
PASSENGER AIR BAG OFF light
Fi g. 239 Center con so le : p asse nger a irbag off wa rning
light
T he PASSENGER AIR BAG OFF lig ht is loc ated in
t h e cente r of the instrume nt
panel ¢ fig. 239.
T he PASSENGER AIR BAG OFF light w ill come o n
and st ay on to te ll yo u when the front Adv anced
Airbag on the passenger sid e has bee n turned o ff
by the e lec tronic contro l unit. If the b ulb for the
PASSENGER AIR BAG OFF light bur ns o ut, the
airbag indicato r light
El will come on to signal a
malfunction in the Advanced A irbag System. Al ­
t h ough the burned-out bu lb w ill not change the
way the front passenger's fronta l airbag works, it
will no longer be possible to use the
PASSENGER
AIR BAG OFF
light to ma ke sure that the a irbag
o n/off status is cor rec t for the oc cupan t on the
front pas senge r seat. Have the air bag system in­
spe cted imme dia tely by your au thori zed A udi
dealer.
The PASSENGER AIR BAG OFF light will blink
for about 5 seconds when:
- the ignition is sw itched on and
- the capacit ive passenger detection system,
which switches the front seat passenger 's fron­
t al Advanced Airbag on and
off, detects a
change i n the status of the front passenger
seat.
As soon as the
PASSENGER AIR BAG OFF light
stops blinking, always ma ke sure that the a irbag
status (on or off) as shown by the
PASSENGER
AIR BAG OFF
l ight is p roper for the age, si ze and
ele ctri cal c ap aci tance of the pe rso n oc cupying
t h e front passenger sea t. A lways make s ure that
the safety be lt fo r the front passe nger seat is
prope rly faste ned.
..,.
281

Airbag system
The PASSENGER AIR BAG OFF light will show the status of the front seat passenger 's frontal
Advan ced Airbag a few seconds after the igni­
tion is switched on and the airbag indicator
light goes off. The PASSENGER AIR BAG OFF
light:
- will stay on if the front passenge r seat is not
occupied;
- will stay on if the elect rical capac itance meas­
u red by the capac itive passenger detection sys ­
tem fo r the front passenger seat equals the
combined capacitance of a n infant up to about
o n e year of age and o ne of the rearward -facing
o r fo rwa rd-facing chi ld restra in ts lis ted in Fed­
era l Mo to r Ve hicle Safety Sta ndar d 208 w it h
w hich the Advance d Airbag Syste m in your ve hi­
cl e w as c ertified; Fo r a listing o f the chi ld re ­
st rain ts that were use d to ce rtify you r ve hicl e's
com pliance with t he U.S . Safety Sta ndar d
¢page 297 .
-will go out if the front pas senge r seat is occu ­
p ied by an adult as reg istere d by the capacitive
passenger detection system.
- The
PASSENGER AIR BAG OFF lig ht must come
o n an d stay on if the ignition is on and ...
- a ca r bed has been insta lled on t he fron t pas ­
senger seat, o r
- a rearwar d-faci ng child res train t h as been in ­
sta lled on t he front passe nger seat, or
- a f orwar d-f acing child res trai nt ha s bee n in sta l­
l e d on the front passenge r seat,
- and if the elec trical c apac it a nc e regis tered on
t h e fron t pa ssenger sea t is eq ual t o or le ss than
the comb ined ca pacitan ce of a typica l 1 yea r­
o ld infant a nd one of the rearwar d-fac ing o r
f o rwa rd-facing chi ld restraints listed in Federal
Motor Vehicle Safety Sta ndard 208 w ith w hich
the Advanced A irbag System in yo ur vehicle was
ce rtified.
I f th e front passenger seat is not occ upied, the
front a irbag w ill not dep loy, and the
PASSENGER
AIR BAG OFF
light will stay o n. Never install a
rearward -fac ing c hild rest raint on the front pas­
senge r sea t, the safes t place for a child in any
kin d of c hild r estrai nt is a t one of the sea ting po­
si tions on the re ar sea t
¢page 270, Child re-
282
s traints on the front sea t - some important
things to know
and ¢ page 294 , Child safety.
If the PASSENGER AIR BAG light comes
on ...
If th e PASSENGER AIR BAG OFF light comes on
whe n one of t he conditions listed above is met,
b e su re to c heck the light regular ly to make cer ­
ta in that the
PASSENGER AIR BAG OFF li ght
stays on continuously wheneve r the ignition is
o n. If the
PASSENGER AIR BAG OFF lig ht does
not appea r on and does no t stay on a ll the time,
stop as soon as it is safe to do so a nd
- reactivate the system by tur ning the ignit io n
off for more than 4 seconds and the n tu rni ng it
on again;
- remove and re install the ch ild restraint. Make
sure that the child restra in t is prope rly insta l­
l e d and tha t th e safe ty belt for the fro nt pas­
senge r sea t has been corre ct ly rou ted t hrough
t he child r estra int as d escribe d in th e child r e­
s tra int manufac tur er's in st ru cti ons ;
- mak e sure th at t he convert ible lo cki ng re trac ­
to r o n the
sa fety belt for t he fro nt passe nge r
seat h as been a ctivat ed a nd t hat t he s afety bel t
h as bee n pu lled tigh t.
- mak e sure th at no e lec trical device (s uch as a
lap to p, C D playe r, e lectro nic games dev ice,
power inverte r o r seat heater fo r chi ld seats) is
placed o r used o n the fro nt passen ger seat if
the device is connected to the 12-vo lt soc ket or
the c igarette lighter socket;
- make sure that no seat hea ter has bee n ret ro ­
fitted o r othe rw ise ad ded to t he front passen­
ger seat;
- make sure that not hing can inte rfere with t he
safety belt buckles and that they are not ob­
st ructed;
- make sure that t here are no wet o bjects (such
as a wet towe l) and no water or ot her liquids on
the front passenge r seat c ushion .
If the PASSENGER AIR BAG light still does
not come on . ..
If the PASSENGER AIR BAG OFF light still does
not come o n an d does not stay o n continuously
(whe n the ign ition is sw itched on) ,
.,.

u. 00 .-< N l'­ N .-< 0 N > 00
-take the child restraint off the front passenger seat and install it properly at one of the rear
seat positions. Have the a irbag system inspect­
ed by your Audi dealer immediately .
-move the child to a rear seat position and make
sure that the child is proper ly restrained in a
child restraint that is appropriate for its size
and age.
Th e PASSENGER AIR BAG light should NOT
come on ...
The PASS ENGER AIR B AG OFF light shou ld NOT
come on whe n the ignition is on and an adult is
sitting in a proper seating position on the front passenger seat . If the
P A SSENGER AIR B AG OFF
light comes on and stays on or flashes for about
S seconds while d rivi ng, under these c ir c umstan­
ces, make s ure that:
- the adult on the front passenger seat is proper­
ly seated on the center of the seat cushion with
his or her back up aga inst the bac krest and the
back rest is not recl ined,
-the ad u Lt is not ta king weig ht off t he seat by
hold ing on to the passenger
assist handle
above t he fron t passenger door o r su pporting
their weight on the armrest,
-the safety be lt is be ing properly wo rn and that
there is not a lot of slack in the sa fety be lt web ­
bing,
-there are no aftermar ket seat covers or c ush ­
ions or other things (such as blankets) on the
front passenger seat that might cause the ca ­
pacitive passenger detection system to miscal ­
cu late electrical capac itance.
Important safety instructions on
monitoring the Advanced Airbag System
.&_ WARNING
-If the status of the Adv a need Airbag System
has changed while the vehicle is moving, the
PA SSENGER AIR BAG OFF light blinks for
about S seconds to catch the driver's atten­
t ion. If th is happens, a lways stop as soon as
it is safe to do so and check the steps descri­
bed above.
-
Airbag syste m
- If the PASSENGER AIR BAG OFF light does
not go off when an adult who is not very
small is sitting on the front passenger seat
after taking the steps described above,
make sure the adu lt is properly seated and
rest rained at one of the rear seating posi­
tions. Have the a irbag system inspected by
your author ized Audi dealer befo re t rans­
port ing anyone on the front passenger seat .
.&_ WARNING
= -
An airbag system that is not functioning prop­
erly cannot provide supplemental protection in a fronta l crash .
-If the ai rbag ind icator light ~page 26
comes when the vehicle 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 when it should.
.&_ WARNING
--If the front a irbag inflates, a ch ild witho ut a
chi ld restraint, or in a rearward-facing child
safety seat, or in a forward-fac ing child re­
stra int that has not been properly insta lled
will be serious ly injured and can be killed.
- Even though you r vehicle is equipped with
an Advanced A irbag System, make certain
that all children, espec ially 12 years and
younger, always ride on the back seat prop­
erly restrained for their age and size.
-Always install fo rwa rd or rea r-f acing child
seats on the rear seat -even w ith an Ad ­
vanced Airbag System.
-If you must install a rearward-facing child
seat on the front passenger seat because of
exceptional circumstances an d the
PASSEN­
GER AIR BAG OFF
light does not appear and
stay on, immed iate ly install the rea r-facing
child seat in a rear seat ing pos ition and have
the airbag system inspected by your Audi
deale r.
- If, in exceptional circumstances, you must
install a forward-facing child restraint on
the front passenge r seat, always move the
283

Airbag syste m
seat into its rearmost position in the seat's
fore and aft adjustment range, as far away
from the airbag as possible. The backrest must be adjusted to an upright posit ion .
Make sure that the
P A SSEN GER AIR BAG
OFF
light comes on and stays on all the t ime
whenever the ignition is sw itched on.
A WARNING
- If the PASSENGER AIR BAG OFF light does
not go o ut w hen an ad ult is sitting on the
front passenger seat after taking the steps
described above, make sure the adu lt is
properly seated and restrained at one of the
rear seating positions .
- Have the airbag system inspected by your
Audi dealer before transporting anyone on
the front passenger seat .
(D Tips
If the capacitive passenge r detection system
determines that the front passenger seat is
empty, the fronta l airbag on the passenger
side w ill be turned off, and the
PA SSE NGER
AIR BAG OFF light will stay on.
Repair , care and disposal of the airbags
Parts of the a irbag system are installed at many
d ifferent places on your Aud i. Install ing , remov­
ing, servic ing or repa iring a part in an area of the
ve hicle can damage a pa rt of an airbag system
and p revent that system from working properly
in a co llision .
There are some important th ings you have to
know to make sure that the effect iveness of the
system w ill not be impaired and th at discarded
components do not cause injury or pollute the
environment .
A WARNING
Improper care, servicing and repair proce ­
dures can increase the r isk of personal injury
and death by preventing an airbag from de­
ploying when needed or dep loying an airbag
unexpectedly:
284
-
- Never cover, obstruct, or change the steer­
ing wheel horn pad or airbag cover or the in ­
strument panel or modify them in any way.
- Never attach any objects such as cup ho lders
or telephone mountings to the surfaces cov­
ering the a irbag un its .
- For cleaning the horn pad or instrument panel, use only a soft, dry cloth or one mois­
tened w it h plai n water . Solvents or cleaners
could damage the airbag cover or change
the st iffness or strength of the material so
that the ai rbag cannot deploy and p rotect
p roperly.
- Never repair, ad just, o r change any parts of
the airbag system.
- All work on the steer ing wheel, inst rument
pa nel, front seats o r electr ica l system ( in­
cl uding the insta llation of a udio eq uipment,
cell ular te lephones and CB radios, etc.)
m ust be performed by a qualified techn ician
who has the training and specia l equipment
necessary.
- For any work on the airbag system, we
strong ly recommend that you see yo ur a u­
thorized A udi dealer or qualified workshop .
- Never modify the front b umper or parts of
the vehicle body.
-Always make sure that the side airbag can inf late wit hout interference:
- Never install seat covers or replacement upholstery ove r the front seatbacks that
have not bee n specifica lly approved by
A udi .
- Never use additional seat c ushi ons that
cover the areas where the side airbags in­
flate.
- Damage to the orig inal seat cove rs or to
t h e seam in the area of the s ide a irbag
module mus t always be repai red immedi ­
ate ly by an authorized Aud i dealer.
- The airba g sys tem can deploy o nly on ce. Af ­
t er an airbag has been dep loyed, i t m ust be
replaced with new replaceme nt parts de ­
signed and approved especia lly for your
Aud i mode l version . Rep lacement of com­
plete airbag systems or airbag components
must be performed by qua lified workshops
only . Make sure t hat any airbag service

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action is entered in your Audi Warranty &
Maintenance booklet under
AIRBAG RE­
PLACEMENT RECORD.
- Applies to plug-in hybrid* vehicles: In the
event of a collision where the airbags de­
ploy, the electrical connection to the high
voltage battery is automatically disconnect­
ed. This prevents a short c ircuit.
@) For the sake of the environment
Undeployed airbag modules 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 and
safety belts with pretensioners are scrapped,
all applicable laws and regulations must be
observed. Your authorized Audi dealer is fa­
miliar 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 the Advanced Airbag System
performs in a crash. For example, using tire-rim
combinations not approved by Audi, lowering the
vehicle, changing the stiffness of the suspension, including the springs , suspension struts, shock
absorbers etc. can change the forces that are
measured by the airbag sensors and sent to the
electronic 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 which it would not deploy if
the changes had not been made. Other kinds of
changes may reduce the force 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-
.
Airbag system
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 instal­ led on your vehicle.
- Never use tire-rim combinations that have
not been approved by Audi.
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. 240 Driver 's knee airbag
The driver knee airbag is in the instrument panel
underneath the steering
wheel¢ fig. 240, the
airbag for the passenger is at about the same
height in the instrument panel underneath the
glove compartment.
The knee airbag offers additional protection to
the driver's and passenger's knees and upper and
lower thigh areas and supplements the protec­
t ion provided by the safety belts.
If the front airbags deploy, the knee airbags also
deploy in frontal collisions when the deployment
threshold stored in the control unit is met
¢ page 2 79, More important things to know
about front airbags .
In addition to their normal safety function, safe­
ty belts help keep the driver or front passenger in
posit ion in a frontal collision so that the airbags
can provide supplemental protection .
..,.
285

Airbag system
The airbag system is not a substitute for yo ur
safety belt. Rather, it is part of the overa ll occu­
pant restraint system in your vehicle. 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 . This is why you should
always wear your safety belt, not just because
the law req uires you to do so
q page 260, Gener­
al notes.
Remember too, airbags will deploy only once and
only in ce rtain k inds of accidents
-yo ur safety
be lts are always there to offer protect ion in those
accidents in wh ich airbags a re not suppose d to
deploy or w hen they h ave already deployed, fo r
examp le when your vehicle str ikes or is str uck by
another after the firs t collision .
T his is jus t one of the reasons why an airbag is
not a subs titut e for the safety belt. The airbag
sys tem works most effec tively when used with
the safety belts. Therefore, a lways wear your
safety belts correct ly.
It is important to remember th at whi le the sup­
p lemen tal knee a irbag system is des igned to re­
duce the like lih ood of se rious injuries, other inju ­
ries, for example, swe lling, b ruising an d minor
ab rasions and friction burns can also occur when
an airbag inf lates .
The knee airbag system basically consists of :
- The elec tronic control module
- T wo infl atab le airbags (airbag a nd gas genera-
t or), one for the driver an d one fo r the fron t
passenger
- T he airbag indic ato r ligh t in the ins trumen t
pane l
The knee airbag system will not deploy:
-whe n the ignition is switched off
- in frontal collisions when the decele ration
measured by the control u nit is too low
- in s ide collisions
- in rear -end collisions
- in rollove rs
- in the eve nt o f a sys tem ma lf u nct ion (wa rning/
indicator light is on)
q page 26 .
286
A WARNING
,-
- Safety belts and the airbag system can only
provide protect io n when occupa nts ar e in
the prope r seat ing pos ition
~ page 2 79 .
-If the a irbag ind icator light ¢ page 26
comes when the veh icle is being used, have
t he system inspected immedia tely by your
author ized A udi de aler.
It is possib le th at
the air bag will i nfl at e w hen i t is no t sup ­
po sed to , or w ill no t in fla te w hen it sho uld .
How knee airbags work
Applies to: vehicles wi th knee airbags
The risk of injury to the leg area can be reduced
by fully inflated knee airbags.
Fig. 241 Inflated a irbags protec ting in a fro nta l co llis io n
The knee airbag system has been designed so
that the airbags for the driver and front passen­
ger dep loy in ce rtain but not all fronta l collisions .
If the front airbags deploy, the knee airbags also
deploy i n frontal col lisions when the dep loyment
th reshold stored in the cont rol unit is met.
When the system deploys , the a irbags f ill with a
compressed pro pellant gas, and inflate between
the lowe r part of the instrument panel and the
driver and the lower part of the instrument panel
and t he front
passenger¢ page 2 79, fig. 238 .
Althoug h they are not a soft pillow, they can
"cushion" the impact and in this way they ca n
help to red uce the risk of in jury to the lower ex­
trem ities.
A ll of th is takes p lace in the b link of an eye, so
fast that many people don 't even rea lize that the
airbags have deployed. The airbags a lso inflate
with a g reat deal of force and it is important fo r
Ill-