
• .___H_ o_m _ e_ L_ i_ n _k_ ®_R  __________________________________________________  _ 
App lies  to vehicles:  w ith  Homelin k®  un ive rsal  remote  contro l 
Programmi ng  th e Hom eLink ® transmitt er 
The transmitter  is  programmed  in  two  phases.  For  rolling 
code  transmitters,  a  third  phase  is  also  necessary . 
Fig. 151  Overhead 
console : Homelink® 
keypad 
Fig.152  Frontbumper, 
driver  side: location  of 
transmitter  unit 
Phase  1:  programming  the  overhead  keypad 
1.  Make  sure  your  vehicle  is w ithin  operat ing  range  o f the 
remote  controlled  garage  door  opener . 
2.  Set  the  parking  brake=> 
& in  "General  information"  on 
page  139. 
3.  Turn  the  ignit ion  on.  Do  not  sta rt  the  engine!  4.  Press  and  ho
ld the  two  outside  Homelink®  buttons 
(D 
and  @for app roximately 20 seconds  until  indicator 
light ©=:> fig. 
151 beg ins to  flash.  Then  release  both 
buttons . Do  not  hold  the  buttons  for  longer  than 
30 
seconds. 
This  procedure  only  needs  to  be  performed 
once. It 
erases  the  factory-set  default  codes  and  does  not  have to 
be  repeated  to  program  additional  remote  controls. 
5. Press and  hold  the  Homelink ® button (D, ® or @ until 
the  indicator  light © starts  flashing 
slowly. Release  the 
button. 
- The system  will  remain  in  programming  mode  for  5 
minutes. 
Go to  the  front  of  the  v ehicle  and  proceed  w ith 
phase  2. 
Phase  2: 
programming  the  bumper  mounted  transmitter 
6.  Hold  the original  remote  control at  a distance  between 0-
6 in. (0-15 cm)  from  the  b umper  below  the  appropriate 
headlight  for  your  vehicle => fig. 
152 (use  the  shortest 
distance  possible) . 
7.  Aim  the  remote  control  just  below  the 
driver  side head
lig ht. 
8.  Press  and  hold  the  act ivation  button  on  the  remote 
control. 
- May  be  different  in  Canada . If so,  press  and re-press 
(cycle)  the  activation  button  on your  remote  control  every 
two  seconds.  -.,  

& WARNING  (c ont in u ed) 
ext ra sa fe ty a fforded  by the  ABS tempt  you into t ak in g  ex tr a risks . 
The  ABS cannot  overco me th e law s of  ph ysics. 
[ i J Tips 
•  If ABS  is  not  funct ioning  properly,  a warning  light  will  come  on. 
See 
=> page 20. 
•  If  a fau lt  occurs  in the  ABS, the  EDL is also  not  funct ion ing . This 
is  indicated  by  the  ABS warning  light. 
Brake  assistant 
T he  brake  assistant  is  designed  to  achieve  the  optimum 
braking  effect. 
The  brake  assistant  helps  to  increase  the effective braking  power 
and  thus  to  achieve  a shorter  stopping  distance . If the  driver 
presses  the brake  pedal  very  quick ly, the  brake  assistant  automati 
cally  boosts  the  braking  force  to  the  maximum  level,  up to  the  point 
where  the  anti -lock  brake  function  (ABS) intervenes  to  stop  the 
wheels  from  locking.  You should  then  keep  the  brake  pedal  pressed  until  the vehicle  has  braked  to  the  required  speed.  The  brake  assis
tant  switches  itself  off  as soon  as you  re lease the  brake  peda l. 
The  brake  assistant  will  not  be operative  if  there  is a malfunction  in 
the  ABS . 
& WARNING 
Please remembe r that  the  accident  risk  always  in cre a se s  if you 
dri ve to o fa st,  e spe cially  in cor ner s o r on a slipp ery road , or  if  you 
follow  th e vehicle  ahead  of you too  clos ely. An increased  a ccident 
ri sk  ca nnot  be  comp en sa ted  even  b y the  brake  assista nt , s o 
alwa ys maintain  a  safe spe ed . • 
Controls  and  equip ment  Safety  first  Vehicle  operation 
Int
ellig ent  tec hnol ogy 
Servotronic®  -advanced  power 
steering  system 
The power  steering  systems  uses  the  power  of  the 
running  engine  to  allow  precise  steering  with  little  effort. 
The  advanced Servotronic ® power  steering  system  senses  the  road 
speed  and  electronically  adjusts  power  assistance  to  provide 
comfortab le and  safe  steering  response  exactly  matched  to  the 
vehicle  speed. 
Power  steering  will  not  work  if  the  engine  is  off.  As  a result,  the 
steering  whee l wil l be  hard  to  turn . 
The  power  steering  fluid  level  is checked  during  the  schedu led 
maintenance  services. 
0 Note 
If there  is an  electronic  ma lfunction, servotronic will  still  function 
like  a conventional  power  steer ing  system,  providing  a constant 
steering  support  force  that  is no  longer  proportionate  to  the  vehicle 
speed.  This  is  most  noticeable  when  tu rning  the  steering  whee l at 
low  speeds  (for  examp le when  parking),  -more  effort  wil l be 
requi red than  usual. 
•  Be aware  of  the  different  than  usual  steering  response  and 
adjust  you r steering  force  accordingly . 
•  Have the  problem  checked  and  set  right  by  an Audi  dealer  as 
soon  as  possible . 
[ i J Tips 
•  When  the  engi ne  is  running,  never  hold  the  steering  whee l 
turned  all  the way  to  the  right  or  to  the  left  for longer  than  15 
seconds.  The power  steering  pu mp will  overheat  the  hydraulic  fluid 
if  you  keep  holding  the  steering  wheel  turned  a ll the  way.  This  is 
likely  to  damage  the  power  stee ring  system. 
~ 
Vehicle  care  Do-it-yourself  service  Technical  data  
![AUDI S4 CABRIOLET 2009  Owners Manual [ i ] Tip s 
• Do  not  tow  a  trailer  during  the  break-in  period  of  your  vehicle. 
•  If  you  tow  a trailer,  your  Audi  may  require  more  frequent  mainte 
nance  due  to  the  ex AUDI S4 CABRIOLET 2009  Owners Manual [ i ] Tip s 
• Do  not  tow  a  trailer  during  the  break-in  period  of  your  vehicle. 
•  If  you  tow  a trailer,  your  Audi  may  require  more  frequent  mainte 
nance  due  to  the  ex](/manual-img/6/57654/w960_57654-228.png)
[ i ] Tip s 
• Do  not  tow  a  trailer  during  the  break-in  period  of  your  vehicle. 
•  If  you  tow  a trailer,  your  Audi  may  require  more  frequent  mainte 
nance  due  to  the  ex tra  load=> 
page  316 . • 
Parking  on  a  slope 
---'--------------------
Do  not  park  with  a  trailer  on  a  slope.  If  it  cannot  be 
avoided,  do  so  only  after  doing  the  following: 
Wh en  p arking : 
-Apply  the  foot  brake. 
- Have someone  p lace  chocks  under  both  the  veh ic le and 
the  trailer  wheels . 
- Wit h chocks  in  p lace,  s low ly  release  t he brakes  until 
wheel  blocks  absorb  t he load. 
- T urn t he wheels  towards  the  curb . 
- Apply  the  parking  brake . 
- Place  an  automatic  transmission  in 
P , respect ively  a 
manual  transmission  in  first  or  reverse  gear. 
Wh en  restarting  after  p arking : 
- Start  the  e ngine . 
- Shift  transmiss ion  into  gear. 
- Re lease  the  parking  brake  and  slowly  pull  out  and  away 
from  the  w heel  blocks. 
- Stop  and  have  someone  retr ieve t he wheel  blocks. 
Controls  and  equip
ment  Safety  first  Vehicle  operation 
Tr
aile r to wing 
[ i ] Tip s 
If  you  move  the  selector  lever  of  the  automatic  transmission  to P 
before  applying  the  parking  brake  and  before  blocking  the  wheels, 
you  may  have  to  use  more  force  later  to  move  the  lever  out  of  the 
P 
position .• 
Vehicle  care  Do-it-yourself  service  Technical  data  

-~_C_ h_e _c _ k_ i_ n ...:::g:;..._ a_n_ d_ f_ i_ll _in ....;g:::;.._  ___________________________________________  _ 
Closing  the  engine  hood 
-Pull  t he  hood  down  until the  pressure  from  the  strut  is 
reduced. 
- Let t he  hood 
drop  down and  latch  in  place. Do  not  try  to 
push  it  shut; 
it  may  fai l to  engage ~& . 
& WARNING 
A  hood  that  is  not  completely  latched  could  fly  up  and  block  your 
view  while  driving. 
•  When  you  close  the  engine  hood,  check  it to  make  sure the 
safety  catch  has  properly  engaged.  The  hood  should be flush  with 
the  surrounding  vehicle  body  parts. 
•  If  you notice  while  driving  that  the  hood  is  not  secured prop
erly,  stop  at once  and  close it. • 
Working  in  the  engine  compartment 
Be especially  careful whenever  you  work  in  the  engine 
compartment. 
Whenever  you  must  perform  any  work in  the  engine  compartment, 
for  example  checking  and  filling  different  fluids,  there  is  a  risk  of  injury,  burns and  accidents.  To prevent  personal  injury  always 
observe  the  following  WARNINGS.  The  engine  compartment of  any 
vehicle  is  a  hazardous  area 
~ 6 . 
& WARNING 
To  help  avoid  injury,  before  you  check anything  under  the  hood : 
•  Turn  off  the  engine. 
•  Remove  the  ignition  key. 
•  Apply  the  parking  brake. 
& WARNING  (continued) 
•  Move  selector  lever  of  automatic  transmission  to  "P" (Park); 
put  manual  transmission  in Neutral. 
•  Always  let  the  engine  cool  down.  Hot  components  will  burn 
skin  on contact. 
•  To reduce  the  risk  of being  burned,  never  open  the  hood  if  you 
see  or  hear steam  or coolant  escaping  from  the  engine  compart
ment.  Wait  until  no  steam  or  coolant  can  be  seen or  heard  before 
carefully  opening  the  hood . 
•  Keep  children  away  from  the  engine  compartment. 
•  Never  spill  fluids  on  hot  engine  components. They  can cause a 
fire. 
•  Never  touch  the  radiator  fan.  The  auxiliary  electric  fan  is 
temperature  controlled  and  can  switch on suddenly. 
•  Never  open  the  coolant  reservoir  cap  when  the  engine  is  still 
warm.  The  coolant  system is  pressurized  and  hot  coolant  could 
spray  out. 
•  Protect  your  face,  hands  and  arm  from  steam or  hot  engine 
coolant  by  placing  a thick  rag  over  the  cap when  you  open  the 
coolant  reservoir. 
•  If work  on  the  fuel  system  or  the  electrical  system is  necessary : 
- Always  disconnect  the  battery . 
- Never  smoke or  work  near  heaters  or  open  flames.  Fluids  in 
the  engine  compartment  could  start  a fire. 
- Keep  an  approved  fire  extinguisher  immediately  available. 
•  To avoid  electrical  shock  and personal  injury while  the  engine 
is  running  or  being  started, never  touch : 
- Ignition  cables 
- Other  components  of  the  high  voltage  electronic  ignition 
system. 
•  If  you must  perform  a check  or repair  with the  engine  running: 
~  

_____________________________________________ C_h_ e.::...::. c.:..k .:..in ;..:.:= g:.....:.; a.:..n :....:d ::....:. f.:.:il .:.:li .:..n :.::g:!-- ----J-
& WARNING  (conti nued ) 
-First , fully  apply  the  parking  brake , move  selector  lever  of 
automatic  transmis sion  to  "P "  (Park) ; put  manual  transmiss ion 
in  Neutral. 
- Always  u se extreme  caut ion  to  prevent  clothing,  jewelry , or 
long  hair  from  getting  caught  in  the  radiator  fan,  V-belts  or 
other  moving  parts , or  from  conta cting  hot  parts.  Tie  back  hair 
before  starting , and  wear  no  cloth ing  that  will  hang  or  droop 
into  the  engine. 
•  Minimize  exposure  to  emission  and  chemical  hazards 
~ & . 
& WARNING 
California  Proposition  65 Warning : 
•  Engine exhaust , some  of  its  constituents , and  certa in vehicle 
components  contain  or emit  chemicals  known  to  the  State  of Cali 
fornia  to  cause cancer and  birth  defects  and reproductive  harm . In 
addition , certain  fluids  contained  in vehicles  and  certain  produ cts 
of  component  wear  contain  or emit  chemicals  known  to  the  State 
of California  to  cause  cancer  and  birth  defects  or  other  reproduc 
tive  ha rm . 
•  Battery  post s, terminals  and  related  acces sories  contain  lead 
and  lead  compounds , chemicals  known  to  the  St ate  of California 
to  cause  cancer  and  reproductive  harms.  Wash  hands  after 
handling. 
0 Note 
When  adding  f luids,  always  make  sure  that  they are  poured  into  the 
p roper  container  o r filler  opening,  otherwise  se rio us damage  to 
vehicle  systems  will  occur . 
W For the  sake  of the  environment 
To detect lea ks i n tim e,  inspect  t he v ehi cle floor  pa n from  u nde r
neath  regularly.  If you  see spots  from  oil  or other  vehicle  fluids,  have 
y o ur  v ehicl e inspected  by  an  author ized Au di dea ler. • 
Engine  compartment 
App lies  to  veh icles: with  2 .0  I turbo,  4-cylinder •engine 
2.0  I , 4-cylinder  turbo  engine  (200  hp ) 
The se  are th e m ost  important  items  that  you  can  check . 
Fig. 196  Engine  comp art m ent : 2 .0 I, 4-cy lind er turbo 
G) Battery  ..................................... •.. 
0 Engine  oi l fi lle r ca p ('1:::r.l  ..... ... ... ....... .... .. . 
© Bra ke fluid  reservoir  ( )  ..... ... .... ... ... ... .. . . 
© Engine  oil  dipstick  (orange)  ........ .......... ...  . 
Vehic le care 
N 
N 
I 
261 
255 
2 60 
25 4 ... 
irechnical data  

_____________________________________________ W_ h _a_t _ d_ o_ l _d _o _ n_o_ w_ ?_ .  _  ..... 19111 
• 
& WARNING  (continued) 
pressure  table  - risk  of  accident!  Use  the  highest  tire  pressure  in 
the  table. 
•  Do  not  drive  faster  than  50  mph  (80 km/h)  - risk  of  accident! 
•  Avoid  full-throttle  acceleration,  sharp  braking,  and  fast 
cornering  - risk  of  accident! 
•  Never  drive  using  more  than  one  space-saving spare  wheel -
risk  of  accident! 
•  Normal  summer  or  winter  tires  must  not  be fitted  on  the  space
saving  spare wheel  rim.  • 
Wheel  change 
Before  changing  a  wheel 
Follow these points  for your  own  and your  passenger's 
safety  when  replacing  a  wheel. 
-After  you  experience  a tire  failure,  pull  the  car  well away 
from  moving  traffic  and  try  to  reach  level ground  before 
you  stop  => & . 
- All  passengers  should  leave  the  car and  move  to  a safe 
location  (for  instance,  behind  the  guardrail)=>& . 
- Apply  the parking  brake  firmly=>&. 
- Move  selector  lever  to  position  Pon  an  automatic trans-
mission;  put  manual  transmission  in  first gear =>& . 
- If you  are  towing  a trailer:  unhitch  the trailer  from your 
vehicle. 
- Take the  tool  case  and  the spare tire=> 
page  290 out  of 
the  luggage  compartment. 
& WARNING 
You or  your  passengers  could  be  injured  while  changing  a wheel  if 
you  do  not  follow  these  safety  precautions: 
•  If you  have  a flat  tire,  move  a safe  distance  off  the  road.  Turn  off 
the  engine,  turn  the  emergency  flasher  on  and  use  other  warning  devices  to  alert  other  motorists . 
•  Make  sure  that  passengers  wait  in  a  safe  place  away  from  the 
vehicle  and  well  away  from  the  roadway  and  traffic. 
•  To help  prevent  the  vehicle  from  moving  suddenly  and  possibly 
slipping  off  the  jack,  always  fully  set  the  parking  brake  and  block 
the  wheel  diagonally  opposite  the  wheel  being  changed.  When  one 
front  wheel  is lifted  off  the  ground,  placing  the  Automatic  Trans
mission  in  "P" (Park),  or  engaging  a gear  in  a manual  transmission 
will 
not prevent  the  vehicle  from  moving . 
•  Before  you  change  a wheel,  be sure  the  ground  is  level  and  firm. 
If  necessary,  use  a  sturdy  board  under  the  jack. 
•  After  installing  the  spare wheel,  make  sure  that  you  remount 
the  flat  tire/wheel  in  its  storage  area  properly  and  tighten  the 
knurled  retaining  screw  securely.  • 
Changing  a  wheel 
When  you  change  a wheel, follow  the  sequence  described 
below  step-by -step  and  exactly  in  that  order. 
1. Remove  the decorative  wheel  cover*.  For  more details 
see  also  => 
page  294, "Decorative  wheel  covers"  or 
=> 
page  295, "Wheels  with cap-covered  wheel bolts". 
2.  Loosen  the  wheel  bolts=> 
page 295. 
3. Locate  the  proper mounting  point for  the  jack  and  align 
the  jack  below  that  point=> 
page 296. 
4. Lift the car  with  the  jack=> page 296.  _,.. 
Do-it-yourself  service  

______________________________________________ E_ m_ e_r -=g :...e _ n_ c __a. y_ s_it _u_ a_ ti_o _ n_ s _ __,11111 
& WARNING  (continued) 
• Before you check anything  in the  engine  compartment,  always 
read  and  heed all  WARNINGS~ page  242, "Engine compartment". 
0 Note 
• Applying  a higher  voltage  booster  battery  will  cause  expensive 
damage  to  sensitive  electronic  components,  such  as control  units, 
relays,  radio,  etc . 
•  There  must  be  no  electrical  contact  between  the  vehicles  as 
otherwise  current  could  already  start  to  flow  as soon  as the  positive 
(+) terminals  are  connected. 
[ i] Tips 
The discharged  battery  must  be properly  connected  to  the  vehicle's 
electrical  system.  • 
Use  of  jumper  cables 
Make sure  to connect  the jumper  cable  clamps  in  exactly 
the  order  described  below! 
Fig. 225  Jump· 
starting  with the 
battery  of another 
vehicle : A  -discharged 
vehicle  battery,  B  -
booster  battery 
Vehicle  with  discharged  battery: 
- Turn  off  lights  and  accessories,  move  lever  of  automatic 
transmission  to 
N (Neutral)  or P (Park) and  set  parking 
brake. 
Connect  POSITIVE (+) to  POSITIVE (+) (red) 
1.  Connect  clamp  of  plus  cable  to  positive(+)  terminal G) 
~ fig.  225  of  discharged  vehicle  battery@. 
2.  Connect  clamp  on opposite  end  of cable to positive(+) 
terminal 
® of  booster  battery@. 
Connect  NEGATIVE  (-) to  NEGATIVE  (-) (black) 
3.  Connect  clamp  of  minus  cable  (black)  to negative( -) 
terminal 
0 of  booster  battery@. 
4.  Connect  clamp  on  opposite  end  of  negative  cable  to  the 
negative( -) terminal © of  the  discharged  vehicle  battery 
@. 
- Check  that  all  screw  plugs  on  the  battery cells  are 
screwed  in firmly.  If  not, tighten  plugs  prior to 
connecting  clamp  on  negative  battery  terminal. 
Starting  the  engine 
- Start  the  engine  of the  vehicle  with  the  booster battery. 
Run the  engine  at a moderate  speed. 
- Start  engine  with  discharged vehicle  battery  in the  usual 
manner. 
- If the  engine  fails  to  start:  do  not keep  the  starter 
cranking  for  longer  than  10 seconds.  Wait for  about  30 
seconds  and  then  try  again.  .,,. 
~ehicle care  Do-it-yourse lf  service  Technical data  

Alph ab eti ca l  ind ex  --------------=-----
Convertible  locking  retractor 
Activating  ...... ... .. .... ...... ..  202 
Deactivating  .. ... ..... ..... .. ... .  203 
Using  to  secure  a child  safety  seat  200 , 
202 
Convertible  top  ........ .... .... .... ..  61 
Coolant  system 
Cooling  System  257 
Expansion  tank  ... .... ...... .... ..  258 
cornering  light  . .......... .. .... .... ..  79 
Cruise  control  .. ... ... ...... ...... ..  123 
Changing  a stored  sp eed  . .... .... . 124 
Setting  and  storing  a vehicle  speed  .  124 
Switching  off  ....................  125 
Switching  off  temporari ly  .. ........  124 
Switching  on  .... .... .... ...... ..  124 
Warning/indicator  lights  ... ... .... ..  20 
Cruising  range  .. .... .... .... ...... ...  37 
Cupholder  . ... .. ...... ..... .. .. ....  104 
D 
Data  . .... ... . ... .. ... ... .... ..... .  314 
Data  recorder  ... .... ...... ..... .... . 212 
Date  dis play  . . .  . . . .  . . . .  . .  . . . .  . . .  . . . .  .  14 
Daytime  running  lights  ... .. ... .. ... ...  78 
Declaration  of  compliance  Cell  phone  package  .. .. .... .... ...  320 
Elect ronic  immobilizer  . ..... .. ....  320 
Homelink®  universal  remote  con trol  320 
Remote  control  key  .. .... .... .... . 320 
Tire  pressure  monitoring  system  ...  320 
Controls  and  equip
ment  Safety  first 
def 
Dublicate  key ... ...... ... .. . ... .... ..  47 
What  does  this  mean  when  it  appears  in 
Dynamic  shift  program  ....... ... ... . .  136 
the  trip  odometer  display?  .. ...... . 15 
Defogging  the  windows  . ....... ..... . 116 
E 
Defrosting  the  windows  .. ... ..... ... . 116 
Determining  correct  load  lim it  ... .... .  276  ECON 
Digi tal  clock  ............. .. ... ... ....  14  When  should  I use  ECON? 
... .... .. . 113 
Setting  the time  ......... .... .... ..  14  EDL 
Digital  compass  . ... ... . ... ... .. .... ..  90  See Electronic  differential  lock  (EDU  .  213 
Dimensions  ..... .... .... .... .... ...  313  Electric  roof  .
..... ... ..... .. .... .... . 61 
Dipstick  Electrically  heated  front  seats  .
.. .... ..  116 
Reading  the  dipstick  properly  ...... 254 Electronic  differential  lock 
Distance  ... .... ... ... .. ... .... .... ..  38  Warning/indicator 
lights  ..... ... ....  20 
Doors,  power  locks  ........ ....... ....  53 
Driver  Electronic  differ
ential  lock  (EDU 
How  the  system  works  ...... .. ....  213 
See S eating  position  .. ... ... ... ...  148  Electronic  immobilizer  ..
.. .. . .. .. ..  15, 49 
Driver  information  dis play 
Miles  (kilometers)  to  empty  .. .. ... ..  26  Electronic  power  control 
EPC warning/indicator  light  .........  22 
Parking  brake  warning  ... ... ..... ..  30  Electronic  sp
eed  limiter  ..... .. .... ....  28 
D river  information  sys.tern  . .... ...... ..  24  Electronic  stabilization  program  (ESP) 
Driver  information  messages  .. .... ..  29  How  the  system  works  ...
..... .. ..  212 
Fuel  filler  cap  . .. . ........ ....... ..  27  Elec
tronic  stabiliza tion  program  (ESP) 
Menu  button  .... . .. .. .... .... .... .  40  Warning/indicator  lights 
.... ...... ..  22 
Menu  display  .... ... .... .... . ... ..  39  Emerg
ency  flasher  ... .... ... .. .......  82 
Open  door  or  rear  lid  warning  ...... . 26  Warning/indicator 
lights  .... ...... ..  21 
Outside  temperatu re  disp lay  ... .....  25 
Emergency  locking  . .... .... ... .. .. . ..  55 
Sound  system  display  .... .... .... ..  25 
Emergency  starting  ..... ....... .. ....  304 
Driver's  seat  memory  ... .... .... .....  101 
Emergency  towing  . .. ... .. .. .... ....  306 
Recalling  a seat  position  .... .... ...  102 
Engine 
Storing  a seat  position  ... ... .... ..  102 
4-cylinder  (200 hp)  . ... .. .. .... .. ..  251 
Driving  messages  ...... ........ ..... . 29 
6-cylinder  (255 hp)  . ... .. .. .... .. ..  252 
Driving  safely  . ... .. . ... .. .... .... ...  146 
Compartment  .... ... .. ...... .... . 251 
Driving  time  . .... ...... .... ... .. .... . 37  Coolant  ...
.. ... .... .... .... .....  257 
Vehicle  operation  Vehicle  care  Do-it-yourself  service  Technical  data