sensor AUDI A5 COUPE 2011 Owner's Guide
[x] Cancel search | Manufacturer: AUDI, Model Year: 2011, Model line: A5 COUPE, Model: AUDI A5 COUPE 2011Pages: 362, PDF Size: 84.88 MB
Page 199 of 362

_______________________________________________ A_ ir_ b_ a_,,,g '--- s.:.y _s _t_ e _ m ___ ffl'II 
& WARNING  (co ntinued ) 
•  The  inflating  airbag  will  hit  the  child  safety  seat  or  infant 
carrier  with  great  force  and  will  smash  the  child  safety  seat  and 
c hild  against  the  backrest,  center  arm rest , door,  or  roof . 
•  Always install  rearwa rd-facing  child  restraints  in the  back  seat. 
•  If you  must  install  a rearward  facing  child  safety  seat  on  the 
front  passenger  seat  because  of  except ional  circumstances  and 
the  PASSENGER AIR BAG OFF light  does  not  come  on  and  stay  on , 
immediately  install  the  rear-facing  child  safety  seat  in a  rear 
seating  position  and  have  the  airbag  system  inspected  by your 
authorized  Audi dealer. 
& WARNING 
If,  in except ional  circumstances, you must  install  a forward-facing 
child  re straint  on the  front  pa ssenger's seat: 
•  Always make sure the forward-facing seat has been designed 
and  certified  by its  manufacturer  for  us e on  a front  seat  with  a 
passenger front  and  s ide  airbag. 
•  Never  put  the  forward-facing  child  restraint  up again st  or very 
near  the  instrument  panel. 
•  Always  move the  passenger  seat  into  its  rearmost  position 
in 
the  seat's fore  and  aft  adjustment  range,  as far  away  from  the 
airbag  a s po ssible,  before  installing  the  forward-facing  child 
restraint.  The  backrest  must  be  adjusted  to  an upr ight  position. 
•  Make  sure that  the  PASSENGER AIR  BAG OFF light  comes on 
and  stays on all  the  time  whenever  the  ignition  is switched  on .• 
Advanced  Airbag  System  components 
Th e front  passenger seat  i n your  ve hicle has a lot  of  very  im portant 
parts  o f th e  Ad van ced A irbag System  in  it. These parts  include  t he 
we ight-sens ing  mat,  sensors, wir ing,  brackets,  and  mo re . The func-
Controls  and  equip
ment  Safety  first  Vehicle  operation 
tion  of  the  system 
in the  front  passenger seat  is checked by the  elec
t ronic  contro l unit  whe n t he  ignit io n  is on.  The con tro l u nit mon itors 
t he Advanced A irbag  System and tu rns th e airbag  indicator  light  on 
when  a malfunction  in the  system  components  is detected.  The func
tion  of  the  a irbag indicator  light  is descr ibed  in greater  deta il below. 
Beca use the  front  passen ger  seat contains  importa nt  parts  of  the 
Advance d Ai rbag System, you mus t take  care  to p revent  i t fro m be ing 
dama ged. Damage to  the  seat may  prevent  t he Advance d Airbag  for 
t he front  p assenge r seat  fro m d oin g  its  job  in a cra sh. 
The  front  Advanced  Airbag  System  consists  of  the 
following: 
•  Cras h sensors in the  front  of  the  vehicle  t hat  measure  vehicle 
acc ele ra tio n/d ecele ration  to prov ide  info rmat io n t o the  Adva nced 
Airbag  System  about  t he severity  of  the  crash. 
•  An elec tron ic con tro l unit,  w it h i nteg rated  crash senso rs fo r front 
and side impacts . The contro l unit  " dec ides" w het her to  fire  the  front 
a irbag s base d on th e informa tion  re ceived from  t he cr ash  sensors. 
The control  unit  also "decides"  whether  the  safety  be lt  pretens ioners 
s ho uld  b e activa ted. 
•  An Advanced Airbag  with  gas generator  and cont rol  va lve for  the 
dr ive r inside t he  st eer ing whee l hub . 
•  An Advanced Air ba g  with  gas gene rator  and control  valve inside 
t he inst rume nt  pan el for the front  pass enger. 
•  A weig ht-sensing  mat  unde r the  upholste ry paddin g of  the front 
passenger seat  c ushi on that  measures the  tota l weigh t on the  seat . 
T he information  registe red is se nt  co ntin u ously to  the  electronic 
cont rol  uni t  t o reg ulate  deployment  of  t he front  Advanc ed A irbag o n 
the  passenger side . 
•  An a irbag  mon itoring  system and ind icator  light  in the inst rume nt 
cluster => 
page 201. 
• A sensor  in  each fro nt  seat  reg isters  the  distance  between  t he 
res pective  seat  and the  s teer ing whee l o r i nst rume nt  pane l. The 
information  reg iste red  is sent  co ntin uously to  the e lectro nic cont rol 
uni t to  reg ulate  dep loyment  o f the  front  Advanced Airbags . .,_ 
Vehicle  care  Do-it-yourself  service  Technical data  
Page 200 of 362

_,___A_ i_rb _ a_,g=-- s_, y:;.. s_ t_e _m  ________________________________________________  _ 
• The PASS ENGER AIR  BAG OFF light  comes  on  and  stays  on  in the 
c en ter  o f the  inst rument  panel ~ 
page 202, fig.  18 0  and tells  you 
w hen  the  front  Adva nced  Airbag  on  th e passenge r side  has  been 
t u rne d 
off. 
• A sensor  below  the  safety  belt  latch  for  the  front  seat  passenger 
t o  meas ure  the  tension  o n th e safety  be lt. T he  tens ion  on  the  s afe ty 
belt  a nd the  we ight  registered  by the  we ight -sensing  mat  help  the 
cont rol  un it  " dec ide" w hether  the  front  airbag  fo r the  front 
passenger  seat  sho uld  be  turned 
off o r not~ page 192 , "Chil d 
restra ints  on  the  front  seat  -some  impo rtant  things  to  know". 
•  A senso r in the  safety  belt  latch  for  the  d river and  for  the  fro nt 
seat  passenger  that  senses  w hether  that  safety  belt  is latched  or not 
and  transmits  this  in formation  to  the  e lec tron ic cont rol  un it . 
& WARNING 
Damage  to  the  front  passenger seat  can prevent  the  front  airbag 
from  working  properly . 
•  Improper  repair  or disassembly  of  the  front  passenger and 
driver  seat  will  prevent  the  Advanced Airbag  Sy stem  from  func 
tioning  properly. 
•  Repairs to  the  front  passenger seat  must  be performed  by qual
ified  and  properly  trained  workshop  personnel. 
•  Never  remove  the  front  passenger or  driver  seat  from  the 
vehicle. 
•  Never  remove  the  uphol stery  from  the  front  passenger seat. 
•  Never disassemble  or remove parts  from  the  seat  or disconnect 
wires  from  it. 
•  Never carry sharp  objects  in your  pockets or place them  on the 
seat.  If  the  weight-sensing  mat  in the  passenger seat  is punctured 
it  cannot  work  properly. 
•  Never carry things  on your lap or carry objects on the  passenger 
seat . Such items  can increase the  weight  registered  by the  weight· 
sensing mat  and send the  wrong  information  to  the  airbag  control 
unit. 
& WARNING  (c on tinued ) 
• Never  store  item s under  the  front  passenger seat . Parts of  the 
Advanced Airbag  System  under  the  pa ssenger seat  could  be 
damaged,  p reventing  them  and  the  airbag  system  from  working 
properly. 
•  Never  place  seat  covers or  replacement  upholstery  that  have 
not  been specifically  approved  by Audi  on the  front  seats . 
•  Seat  covers can prevent  the  Advanced Airbag  System  from 
recognizing  child  restraints  or  occupants on the  front  passenger 
se at  and  prevent  the  side airbag  in the  seat  backre st  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  accurately  registering  the 
child  restraint  or  person 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  manufacturer's  instructions  require the  use 
of  a towel,  foam  cu shion  or  something  else to  properly  po sition 
the  child  restraint , make  certain  that  the  PASSENGER AIR  BAG 
OFF light  come s on  and  stays on whenever  the  child  restraint  is 
installed  on the  front  passenger seat. 
•  If  the  PASSENGER AIR  BAG OFF light  does not  come  on and 
stay  on , immediately  install  child  restraint  in a  rear seating  posi
tion  and  have the  airbag  system  inspected by your authorized  Audi  dealer .• 
How  the  Advanced  Airbag  System 
components  work  together 
Th e fron t Advan ced  A irb ag  System  and  t he  side  airbags  supp lement 
t he  protect ion  offered  by the  front  three-po int  safety  bel ts w ith 
pretens ioners  and  load  limiters  and  the  adjustable  head  restra ints  to 
help  red uce  the  risk of  i njury in  a w ide  range  of  acciden t and  crash  .,_  
Page 201 of 362

situations.  Be sure  to  read  the  important information  about  safety 
and  heed  the  WARNINGS  in this  chapter. 
Deployment  of the  Advanced  A irbag  System  and  the activation  of  the 
safety  belt  pretensioners  depend  on  the  deceleration  measured  by 
the  crash  sensors  and  registered  by the electron ic control  unit. T he 
amount  of  inflation of  the  front  airbags  can  a lso  be  adapted  to  the 
front  seat  position,  depending  on the  distance  between  the  respec
tive  front  seat  and  the  steering  wheel  or  instrument  panel  as  regis
tered  by sensors  in the  seats.  Crash severity  depends  on  speed  and 
deceleration  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 air bag  w ill 
be  turned  off  if the  weight  on  the  passenger seat is less  than  the 
amount  programm ed in the  electronic  control  unit . The front  airbag 
on  the  passenger  side  will also  be  turned  off  if one  of the  chi ld 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 
=> page 192, "Child  rest raints  on  the  front  seat -some  important 
things  to  know". 
& WARNING 
To reduce  the  risk  of  injury  when  an  airbag inflates,  always  wear 
safety  belts  properly. 
•  If you  are unrestrained,  leaning  forward,  sitting 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=> 
page 190. • 
Safety  first  Vehicle OP-eration 
Airbag  system 
More  important  things  to  know  about  front 
airbags 
Fig.  17 9  Inflated 
front  airbags 
Safety  belts are  important  to  help  keep  front  seat  occupants in the 
proper  seated position  so  that  airbags  can  unfold properly  and 
prov ide  supplemental  protection  in a frontal  collision. 
Th e front  airbags  are designed  to provide  additiona l 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  occupant  is  properly 
seated  as far  as  possible  from  the  airbag , 
•  and  the  head  restraints  have  been  properly  adjusted . 
Because  airbags  inflate  in the  blink of  an  eye with  great  force,  things 
you  have  on  your  lap  o r have  placed  on  the  seat  could become 
dangerous  projectiles,  and  be  pushed  into you  if the  airbag  inflates. 
When  an airbag  deploys,  fine  dust  is released.  This is  normal  and is 
not  caused  by a fire  in the  vehicle.  This dust  is made  up  mostly  of  a 
powder  used to  lubricate  the  airbags  as  they  deploy . 
It could  irritate 
skin. 
It is important  to  remember  that  while  the  supplemental  airbag 
system  is  desig ned  to  reduce  the likelihood  of serious  injur ies,  other 
injuries,  for  example  swell ing,  bruising  and  m inor  abrasions,  can also 
happen  when  airbags  inflate.  Airbags  do  not  protect the arms  or the  • 
Vehicle  care  Do-it-yourselt service  iTechnical data  
Page 204 of 362

_,___A_ i_rb _ a_,g=-- s_, y:;.. s_ t_e _m  ________________________________________________  _ 
PASSENGER AIRBAG OFF  light 
Fig. 180  Sec tion from 
the  in strume nt  panel : 
PASSENGER AIRBAG 
OFF light 
The PASSENGER  AIRBAG  OFF light  is  located  in the  center  of  the 
ins trumen t panel => fig. 180 . 
T he 
PASSENGER  AIRBAG  OFF light  w ill come  o n and  stay  on  to  tell 
you  when  the  front  Advanced  Airbag  on  the  passenger  side  has  been 
t u rn ed  off  by the  ele ct ronic  contro l unit.  Each t ime  you  t urn on  t he 
ignition,  the 
PASSENGER  AIRBAG  OFF light  w ill flash  for  a few 
se conds  and: 
•  will stay  on  if the  front  passenger  seat  is  not  occupied, 
•  will s tay on  if t here  is  a small  ch ild  or  child  res trai nt  on  the  fron t 
passenger  seat, 
•  will go  out  if t he front  passenger  seat  is oc cupied  by a n ad ult  as 
registered  by the  weight-sensing  mat. 
Th e 
PASSENGER  AIRBAG  OFF light  must  come  on  and  stay  on if  the 
ignition  is o n and 
•  a  car  bed  has  been  installed  o n the  front  seat,  or 
•  a  rearward-facing  child  restraint  has  been  insta lled  on  the  front 
passenger  seat,  o r 
•  a forward-fac ing  chi ld  restraint  has  bee n installed  on  the  front 
passenge r seat,  o r 
•  the  weight  registered  on  t he front  passenger  seat  is equal  to  o r 
less  th a n  the  com bined  we ight  of  a typic a l 1  year-o ld  rest rained  in  one  of  the  rear-faci
ng  or  forward-facing  infant  restraints  listed  in 
F e d era l Mo tor  Ve hicle Safe ty St and ar d  2 08  w ith which  th e Adv anced 
Airbag  System  in your  vehicle  was  cert ified. 
If  the  front  passenger  seat  is not  occupied,  the  front  airbag  will  not 
dep loy,  and  t he 
PASSENGER  AIRBAG  OFF ligh t will  s tay o n. N ever 
install  a  rearward -facing  child  restraint  on  the  f ront  passenger  seat, 
t he s afest  pla ce fo r a  child  in any k ind of child  rest rain t  is a t one  o f th e 
seating  pos it ions  on  the  rear  seat::::;, 
page 192, "Child  restraints  on 
t he  fro nt  sea t- some  im port an t  things  to  kno w" and => 
page 215, 
"Ch ild  Safety". 
If  the  PASSENGER  AIRBAG  OFF  light  comes  on when  one  of  the 
c onditions  lis ted  above  is  met,  be  sure  to  check  the  lig ht  reg ularly  to 
ma ke certain  that  the 
PASSENGER AIRBAG  OFF light  stays  on  conti n
uously  w henever  the  ignition  is o n. If the 
PASSENGER  AIRBAG  OFF 
light  does  not  appear  and  not  stay  on  a ll the  time,  stop  as  soon  as  it 
is safe  to  do  so  and 
•  reactivate  the  system  by turn ing the  ig nition  off  and  then  turn ing 
it on again; 
•  remove  and  reinstall  the  child  restraint.  Make  sure  that  the  c hild 
restrain t  is  properly  insta lled  and  that  the  sa fety  belt  for  the  fron t 
passenger  seat  has  been  correctly  ro uted  around  the  child  restraint  as 
described  in the  child  res trai nt  ma nufactu rer's  instr uctions; 
•  make  sure  that  the  convertible  lock ing  feature  on  t he safety  belt 
f or  the  front  passenger  sea t has  been  act ivate d an d that  the  safe ty 
belt  has  bee n pulled  tight.  The  belt  m ust  not  be  loose  or  have  loops 
of  slac k so  that  t he senso r be low the  safety  belt  latc h on the  seat  can 
do  its  job::::;, 
page 225. 
•  make  s ure tha t things  that  may  in crease  the  weight  o f the  chi ld 
and  child  safety  seat  are  not  be ing  transported  on  t he  front 
passenge r seat; 
•  make  sure  that  the  safety  belt  tension  sensor  is  not  blocked. 
Shake  the  safety  belt  la tch on  the  front  passenger  seat  back  and 
forth; 
•  If a st rap  o r te ther  i s be ing  u sed  t o tie  the  c hild  safety  sea t  to the 
front  passenger  seat,  make  sure  that  it  is  not  so  tig ht  that  it  causes  .,_  
Page 207 of 362

______________________________________________ ___:.A:::::.:.: ir:....: b~ a~g !....= s:ly '..:s~ t~ e~ m~ ---
& WARNING  (co ntinued ) 
• Always  make  sure that  the  side  airbag  can inflate  without 
interference: 
-Never install  se at  covers or  replacement  upholstery  over the 
front  seatbacks that  have not  been specifically  approved  by 
Audi . 
- Never  use additional  seat  cushions that  cover the  areas 
where  the  side airbags  inflate . 
- Damage  to  the  original  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. 
•  The  airbag  sy stem  can be activated  only  once. After  an  airbag 
has inflated,  it  must  be replaced  by an  authorized  Audi  dealer  or 
qualified  technician  who  has the  technical  information , training 
and  special equipment  necessary. 
•  The  airbag  sy st e m  can be deployed  only  onc e. After  an airbag 
has been  deployed,  it  must  be replaced  w ith  new  replacement 
parts  de signed  and  approved  es pecially  for  your Audi  model 
version . Replacement  of  complete  airbag  systems or airbag 
components  must  be performed  by qualified  workshops  only. 
Make  sure that  any  airbag  service action  is entered  in your Audi 
Warranty 
& Maintenance  booklet  under AIRBAG REPLACEMENT 
RECORD. 
•  In  accidents when  an  airbag  is deployed,  the  vehicle  battery 
separates the  alternator  and the  starter  from  the  vehicle electrical 
system  for  safety  reason s with  a  pyrotechnic  circuit  interrupter. 
- Work  on the  pyrotechnic  circu it  interrupter  must  only  be 
performed  by a qualified  dealer  -risk of  an a ccident! 
- If  the  vehicle  or the  circu it  interrupter  is scrapped,  all  appli
cable safety  precautions  must  be followed . 
Controls  and  equip ment  Safety  first  Vehicle  operation 
'£' For the  sake of  the  environment 
U
ndeployed  airbag  modules  and  pretens io ners  mig ht  be  classified  as 
Perch lorate  Material  -special  handling  may  app ly,  see 
www.d ts c. ca.gov/ha za rdouswaste/pe rchlorate . W he n t he  vehicle  or 
parts  of  the  restraint  system  includi ng  a irbag  modules  safety  belts 
w ith  pretens io ners  are  s crappe d,  all  ap plic abl e  laws  and  reg ulat ion s 
must  be  observed.  Your author ized  Aud i dealer  is familiar  with  these 
req uir ements  and  we  recommen d that  yo u have  yo ur dea le r  pe rform 
this  service  for  you .• 
Other  things  that  can  affect  Advanced 
Airbag  performance 
Chang ing  the  ve hicle's  suspension  system  can  change  the  way that 
t he  Adv anced  Airbag  System  pe rforms  in a  crash . For  example,  using 
tire-r im  combinations  not  approved  by Aud i,  lower ing  the  veh icle, 
c hang ing  the  st iffness  o f the suspe nsio n,  incl uding  the  s prings, 
s u spension  str uts,  shoc k absorbe rs etc.  can  change  the  forces  that 
are  meas ured  by the  airb ag sensors  and  sen t to  the  ele ctron ic con trol 
uni t. Some  suspension  changes  ca n, for  examp le,  increase  the  force 
levels  measu red  by t he sensors  and  ma ke  the  airbag  system  dep loy in 
crashes  in which  it  wou ld  not  deploy  if the  changes  had  not  bee n 
made . Other  kin ds of  changes  may  re duce  the  force  levels  meas ured 
by the  senso rs and  p revent  the  airbag  from  dep loyi ng when  it  should . 
The  sensors  in the  safety  belt  buckle  for  the  d river and  front 
p assenger  se at  tell the  e le ct ro nic co ntro l mo dule  if  the  sa fe ty  belt  is 
latc hed  or  not . If  the  safety  be lt  is  be ing  used,  the  fron t airbag  w ill 
dep loy at  a  s ligh tly hig her  ra te  o f ve hicl e  decelerat io n t han  if the 
safety  belt  is  not  be ing  used.  T he refo re,  in a  part icular  collis io n, it  is 
poss ible that  an  a irbag  wi ll not  deploy  at  a seating  posit ion where  the 
safety  belt  is  being  used  but  wi ll inflate  at  the  posi tion  whe re the 
safety  belt  is  not  bei ng  used.  It  is important  that  not hing  interfere 
w ith  the  s afe ty be lt  bu ckles  so t hat  th e  sensor s can  sen d the  correct 
information  about  safety  belt  use  to  the  electronic  contro l unit.  .. 
Vehicle  care  Do-it-yourself  service  Technical data  
Page 208 of 362

..,. Airbag  system 
PAWi-- --=------------------------------
& WARNING 
Changing  th e vehicle 's su sp en sion  including  use  of  unappro ved 
tire -rim  c ombination s can  change  Advan ced  Airbag  performan ce 
and  increas e the  risk  of  serious  personal  injury  in a  cra sh . 
•  Never  install  suspension  component s that  do  not  have  the 
same  performance  characteristics  as  the  components  or iginally 
installed  on  your  veh icle. 
•  Never  u se tir e-rim  combinations  that  have  not  been  approved 
b y  Audi. 
& WARNING 
Item s stored  b etween the  safety  belt  buckl e and the  center 
console  can cause  the  sensors  in the  buckle to  send  the  wrong 
information  to  the  ele ctroni c control  module  and  prevent the 
Advanced Airbag System  from  w orking properl y. 
•  Always make sure that  nothing  can  interfere with  the  safety 
belt  buckles  and that  they  a re not  obstru cted . 
<£> For the  sake of  the  environment 
Undeployed  airbag  modu les  and  pretensioners  might  be  class ified  as 
Perch lorate  Mate rial -special  handling  may  app ly, see 
www.dtsc.ca.gov/hazardouswaste/pe rchlorate . When  the  vehicle  or 
p arts  of t he  rest raint  sys tem  including  a irbag  mod ules  safe ty belts 
w ith  pretens ioners  are  scrapped,  all  applicable  laws  and  regulat ions 
must  be  observed.  Your authorized  Audi dealer  is familiar  with  these 
requ irements  and  we  recommend  that  you  have  your  dealer  perform 
this  se rvice for  yo u.• 
Knee  airbags 
Applies  to  veh icles: w ith  knee a irbags 
Description  of  knee  airbags 
The airbag  system  can provide  supplemental  protection 
to  properly  restrained  front  seat  occupants. 
.... 
! 00 m 
Fig. 181  D riv er's  kn ee 
a ir ba g 
The knee  airbag  for  the  driver  is  located  in the  instrume nt  panel 
unde rneath  the  steering  whee l:::>  fig.  181,  the  knee  airbag  for  the 
passenge r is at  about  the  same  he ight  in the  instrument  panel  u nder
neath  the  g love  compartment . 
Th e  knee  airbag  offers  addit ional  protec tion to  the  dr ive r's  and 
passenger's  knees  and  upper  and  lower  thigh  areas  as  a supplement 
t o  the  sa fety  bel ts. 
If the  front  a irbags  dep loy, the  knee  airbags  a lso  deploy  i n frontal 
co llisions  above  a certain  severity=> 
page 199, "More  importan t 
things  to  know  about  front  airbags" . 
Besides  the ir normal  safety  function,  safety  be lts  work  to  help  keep 
t he  drive r o r front  passenger  in po sit ion  in c ase  o f a frontal  collision 
so  that  the  a irbags  can  provide  protection . 
Th e airbag  system  is not  a substitute  for  your  safety  belt . Rather,  it  is 
part  of  the  overall  occ upant  restra int  system  in your  veh icle . Always 
remember  t hat  the  airbag  system  can  on ly help  to  protect  you  if you 
~  
Page 211 of 362

Side  airbags 
Description  of  side  airbags 
The airbag  system  can provide supplemental  protection 
to properly  restrained  occupants. 
Fig.  183  Side  airbag 
location  in the  driver's 
seat 
The  side  airbags  are  located  in  the sides  of  the  front  seat  backrests 
=> 
page 209, fig.  183.  They  are  identified  by the  word  "AIRBAG" . 
The  side  airbag system basically  consists  of: 
• the  electronic  control  module  and  external  side  impact sensors 
•  the  two  side  airbags  located  in the  sides  of  the  front  backrests 
•  the  airbag  warning  light  in the  instrument cluster. 
The  airbag  system  is monitored  electronically  to make  certain  that  it 
is functioning  properly  at  all  times.  Each  time  you  turn  on  the  igni
tion,  the  airbag  system  indicator light  will  come  on for  a few  seconds 
(self  diagnostics) . 
The  side  airbag  system  supplements  the  safety  belts  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  collision.  The 
airbag  deploys  only  in side  impacts  and only when the vehicle  acceler
ation  registered  by the  control  unit  is  high  enough . If  this  rate  is 
below  the  reference  value  programmed  into  the control  unit,  the  side 
airbags  will  not  be  triggered,  even though  the  car  may  be  badly 
Safety  first  Vehicle OP-eration 
Airbag system 
damaged  as  a  result  of  the  collision.  It  is  not possible  to  define  an 
airbag  triggering  range that  will  cover every possible  angle of impact, 
since  the  circumstances  will  vary  considerably  between  one  collision 
and  another.  Important  factors  include, for  example, the  nature 
(hard  or  soft)  of  the  impacting  object,  the  angle  of  impact,  vehicle 
speed,  etc. 
=> page 210, "Important  safety  instructions  on  the  side 
airbag  system" . 
Aside  from  their  normal  safety  function,  safety  belts  work  to  help  keep  the  driver  or front  passenger  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 is 
part  of  the overall  occupant  restraint system in your  vehicle.  Always 
remember  that  the  side  airbag  system  can  only  help  to  protect  you  if 
you  are  wearing  your  safety  belt and  wearing  it  properly.  This is 
another  reason  why you  should  always  wear  your  safety  belts,  not just 
because  the law  requires  you  to  do so=> 
page 181, "General  notes". 
It  is important  to  remember  that  while  the  supplemental  side  airbag 
system  is designed  to  reduce  the  likelihood of  serious  injuries,  other 
injuries,  for  example, swelling,  bruising,  and  minor  abrasions  can 
also  be  associated  with  deployed  side  airbags.  Remember too,  side 
airbags  will  deploy  only  once  and  only  in  certain kinds  of  accidents  -
your  safety  belts are  always  there  to offer  protection . 
Vehicle  damage,  repair  costs  or  even  the lack  of  vehicle  damage  are 
not  necessarily  an  indication  of  over-sensitive  or  failed  airbag  activa
tion.  In some  collisions,  both  front  and  side  airbags  may  inflate. 
Remember  too,  that  airbags  will  deploy  only  once  and  only  in certain 
kinds  of  collisions  -your safety  belts  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 turned  off 
•  in side  collisions  when  the  acceleration  measured  by the  sensor  is 
too  low 
•  in front-end  collisions 
~ 
Vehicle  care  Do-it-yourselt service  iTechnical data  
Page 213 of 362

______________________________________________ ___::A....:..:..: i r:...: b=.= a:.;g ~ s~y :.:s:.: t:.: e:.: m~ ---
& WARNING  (continued) 
-Never  let  a child  or anyone  else  rest  their  head  against  the 
side  trim  panel  in the  area  where  the  supplemental  side  airbag 
inflates. 
- Always make  sure  that  safety  belts  are  worn  correctly, 
- Do not  let  anyone  sitting  in the  front  seat  put  their  hand  or 
any  other  parts  of their  body  out  of the  window. 
•  Always make  sure  that  the  side airbag  can  inflate  without 
interference. 
- Never install  seat  covers  or  replacement  upholstery  over the front  seat  backs  that  have  not  been  specifically  approved  by 
Audi. 
- Never  use  additional  seat  cushions  that  cover  the  areas 
where  the  side  airbags  deploy. 
- Damage  to  the  original  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  increase  the  risk of 
injury  in an accident  by interfering  with  the  way the  airbag  unfolds 
or  by being  pushed  into  you  as the  airbag  inflates.  -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  projec
tiles  and  cause  injury  when  the  supplemental  side  airbag  deploys. 
- Never carry  any  objects  or  pets  in the  deployment  space 
between  them  and  the  airbags  or allow  children  or other 
passengers  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 
Controls  and  equip ment  Safety  first  Vehicle  operation 
& WARNING 
(continued) 
pockets  that  may  interfere  with  side  airbag  deployment  and  can 
cause personal  injury  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  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 215, "Child Safety". 
•  Never attempt  to  modify  any components  of the  airbag  system 
in  any  way. 
•  In  a side  collision,  side  airbags  will  not  function  properly  if 
sensors  cannot  correctly  measure  increasing  air  pressure  inside 
the  doors  when  air  escapes  through  larger,  unclosed  openings  in 
the  door  panel. 
- Never  drive  with  interior  door  trim  panels  removed. 
-Never  drive  when  parts  have  been  removed  from  the  inside 
door  panel  and  the  openings  they  leave  have  not  been  properly 
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 other  equipment  is installed  in the 
inside  door  panels. 
- Always  have  work  on  the  doors  done  by an  authorized  Audi 
dealer  or qualified  workshop.  • 
Vehicle care  Do-it-yourself  service  Technical  data  
Page 214 of 362

-Airbag  system -
--=---=----------------
Side  curtain  airbags 
Description  of  side  curtain  airbags 
The side curtain airbag system  can provide supplemental 
protection  to properly  restrained  occupants . 
Fig .  18 5 Side  c urta in 
sys tem,  drive r's  side: 
s ide  cu rtain ai rba g 
loc atio n 
The  side  curtain  airbags  are  located  on  both  sides  of  the  interio r 
above  the  front  and  rear  side  windows=> fig.  185.  They are  identified 
by t he word  "AIRBAG" on  the  w indshield  frame  and  t he center  roof 
pillar. 
T he  side  curta in airbag  system  s upplements  t he safety  belts  and  can 
help  to  reduce  the  risk  of  inju ry for  occupa nts'  heads  a nd  upper  torso 
on  t he side  of  the  vehicle  th at  is struck  i n a sid e collision . The  s ide 
cu rtain  airbag  inflates  i n side  im pacts  and  o nly when  the  vehicle 
acceleration  reg istered  by the  contro l unit  is high  enoug h. If this  rate 
is  below  the  reference  va lue  programmed  into  the  cont rol  unit,  the 
side  airbags  wi ll not  be triggere d,  even  though  t he car  may  be  bad ly 
damaged  as  a  resul t of  the  co llis ion . 
It is not  possib le  to define  an 
airbag  triggering  range  that  w ill cover  every  possible  angle  of  impact, 
s in ce the  circumstance s will vary  conside rably  between  one  colli sion 
and  another.  Important  factors  include,  for  example,  the  nature 
(h ard  o r soft)  of  t he  impa cti ng obje ct,  t he a ngle  of  impa ct,  vehicle 
speed,  etc.=> 
page 213, "H ow side  curta in airbags  work" .  Aside  from  the
ir normal  safety  fu nction,  safety  belts  work  to  he lp 
keep  the driver  or  fron t  passen ger  in  posit io n  in t he  even t of  a co lli
sion  so  that  the  s ide  cu rta in a irbags  can  provide  protection . 
T he airbag  system  is not  a substitute  for  your  safety  belt . Rathe r, it  is 
pa rt  of  the  ove rall oc cupant  rest ra int  system  in your  veh icle. Alway s 
remember  that  the  airbag  system  can  on ly help  to  protect  you  if yo u 
a re  wear ing you r safety  be lt and  we aring  it  p ro perly.  Thi s  is anothe r 
reason  why you  s hou ld always  wear  your  safety  be lts,  not  just  because 
t he  law  requi res  you  to  do  so=> 
page 181, "Gene ral no tes" . 
It  is important  to  remember  that  while  the  s ide curta in airbag  system 
is designed  to  he lp reduce  the  like lihood  of  ser io us  injur ies,  other 
in ju ries,  fo r example,  swe lling,  br uis ing,  and  minor  abras ions  can 
also  be  assoc iate d with  these  airbags.  Remember  too,  these  a irbags 
w ill  deploy  on ly on ce  a nd on ly in  ce rtain  kinds  of  acci den ts  -yo ur 
safety  belts  are  always  there  to  offer  p rotect ion . 
The  side  curtain  airbag  system  basically  consists  of: 
•  T he  electron ic control  mo dule  and  e xternal  side  impact  sensors 
•  The  sid e curtain  airbags  above  the  front  and  rea r side  windows 
•  Th e air bag  indic ator  ligh t  in the  ins tru men t panel 
T he  a irbag  system  is  mo nitored  e lectro nica lly to  make  certain  it  is 
functioning  prope rly at  a ll times . Each time  you  turn  on  t he  ignitio n, 
t he  a irbag  system  indica to r light  w ill come  on for  a few  secon ds (self 
diagnostics) . 
The  side  curtain  airbag  is  not  activated: 
• if the  ignition  is turned  of f, 
•  in side  co llisions  when  the  accelerat io n  measured  by the  sensor  is 
t oo  low, 
•  in  rear-end  co llisions , 
•  in  rollovers.  _,.  
Page 219 of 362

_________________________________________ _:C~ h~il ~d ~ S~a ..!.:fe =. t SYL _lffll 
and  for  the  different  models of  the  same  kind  of  child  restraint 
offered  by  child  restraint  manufacturers. 
The  weight  ranges  for  the  individual types,  makes  and  models  of ch ild 
restraints  that  the  NHTSA has  specified  in the  Safety  Standard 
together  with  the  weight  ranges  of  typical infants and  typical  1 year
old  child  have  been  stored  in the  control  unit of  the  Advanced  Airbag 
System.  When a  child restraint  is being used on  the  front  passenger 
seat  with  a  typical  1 year-old  chi ld,  the  Advanced  Airbag  System 
compares  the  weight  meas ured  by  the weight  sensing  mat  with the 
information  stored  in the  electronic  control  unit . 
The  electronic  contro l unit  a lso  registers  the  tension  on  the  front 
passenger  safety  belt.  The  tension  on the  safety  belt for  the  front 
passenger  seat  will  be different  for  an  adult  who  is  properly using  the 
safety  belt  as  compared  to the  tension  on  the  belt when  it  is used  to 
attach  a child  restraint  to  the  seat . The  sensor  below  the  latch  for  the 
safety  belt  for  the  front seat passenger  measures  the  tension  on  the 
belt.  The  input from  this  sensor  is then  used  with  the  weight  to 
"decide",  whether  there is a  child  restraint  with  a typical 1 year-old 
child  on  the  front  passenger  seat  and  whether  or  not the  airbag  must 
be  turned  off .• 
Child  restraints  and  Advanced  Airbags 
Regardless  of the  child  restraint  that  you  use,  ma ke  sure  that  it has 
been  certified  to  meet  United  States  Federal  Motor  Vehicle  Safety 
Standards  and has been  ce rtified  by  its manufacturer  for  use  with  an 
airbag . Always  be sure  that  the  child  restraint  is  properly  installed  at 
one  of the  rear  seating  positions.  If in exceptional  circumstances  you 
must  use  it  on  the  front  passenger  seat,  carefully  read all  of  the  infor
mation  on  ch ild safety  and  Advanced  Airbags  and  heed all  of  the 
app licab le WARNINGS.  Make certain  that  the  child restra int  is 
correctly  recognized  by  the  weight-sensing  mat  inside  the  front 
passenger  seat,  that  the  front passenger  airbag  is turned  off  and that 
the  airbag  status  is always  correctly  signaled  by the 
PASSENGER  AIR 
BAG OFF 
light. 
Controls  and  equip ment  Safety  first  Vehicle  operation 
Many  types  and  models  of  child  restra
ints  have  been  available  over 
t he  years,  new  models  are  introduced  reg ularly  incorpo rating  new 
and  improved  designs  and  older  models  are  taken  out  of  product ion. 
Chi ld  restraints  are  not  standardized.  Child  restraints of  the  same 
type  typ ically  have  d ifferent  weights  and  sizes  and  differe nt  'foot
prints,'  the  size  and  shape  of  the  bottom  of  the  child  restraint  that 
sits  on  the  seat,  when  they  are  installed  on  a vehicle  seat . These 
differences  make  it  virtually  impossib le  to  certify  compliance  with 
t he  requirements  for advanced  airbags  with  each  and every  chil d 
restra int  that  has  ever  been  sold  in the  past  or  will  be  sold  over  the 
course  of  the  useful  life  of your  vehicle. 
For this  reason, the  United  States  Nationa l Highway  Traffic  Safety 
Administration  has published  a  list  of  specific  type,  makes  and 
mode ls of  child  restra ints  that  must be  used  to cert ify  compliance  of 
the  Advanced  Airbag  System  in yo ur vehicle  with  the  suppression 
requirements  of  Federal Motor  Veh icle  Safety  Standard  208.  These 
child  restraints  are: 
Subpart  A  - Car  bed  child restraints 
Model 
Angel  Gua rd  Angel  Ride 
AA2403 FOF 
Manufactured  on  or 
after 
September  25, 2007 
Subpart  B  -Rear-facing  child  restraints 
Model 
Century  SmartF it  4543 
Cosco  Ar riva 22-013PAW  and 
base  22-999 WHO 
Evenflo  D iscovery  Ad just  Right 
21 2 
Evenflo  First  Cho ice  204 
Manufactured  on  or 
after 
December  1,  1999 
September  25,  20 07 
December  1,  1999 
December  1,  1999 
Vehicle  care  Do-it-yourself  service  Technical data