stop start AUDI S8 2013 User Guide
Page 43 of 318
Closing  the  windows 
• Pull  the switch  to  the first stop and  hold  it 
until  the  window  reaches the  desired  posi
tion. 
•  Pull the  switch  briefly  to  the 
second stop to 
automatically  close the  window. 
Power  window  switches 
@ Driver's door 
@ Passenger's door 
©  Left  rear door 
@  Right  rear door 
®  Safety  button  (or two  safety  buttons  in 
vehicles with  power  child  safety  locks 
¢ poge40) 
Child  safety  lock 
When  the  safety  button®¢ fig.  32 is press
ed, the  LED in the  button  lights up. The fol
lowing  features  are switched  off: 
- The power  windows  in the  rear doors, 
- The buttons  for  the  power  sun shades* in 
the  side windows, 
- The buttons  for  the  power  sun shade * in  the 
rear window, 
- Front  passenger power  seat adj ustment* 
button. 
_& WARNING 
- When  you leave your  vehicle  - even  if  on
ly  briefly- always take  the  ignition  key 
with  you. This applies  particularly  when 
children  remain  in the  veh icle. Otherw ise 
the  ch ildren  could  start  the  engine  or  op
erate  electrical  equ ipment  (e.g.  power 
w indows).  The powe r windows  are func
tional  until the driver's  door  or  passeng
er's  door  has  been opened. 
- Be  careful  when  closing the  windows. 
Check to  see that no one is  in the  way,  or 
serious  injury  could  result! 
- When  locking  the  vehicle from  outside, 
the  vehicle  must  be unoccupied  sinc e the 
windows  can no Longer be opened  in  an 
emergency. 
Opening  and  closing 
@ Tips 
-The  driver  can Lower or  raise the  power 
sun shades* in  the side windows  by using 
switches © and @. 
- After  the  ignition  has  been switched  off, 
the  windows  can still  be opened  or 
closed for  about  10 min utes. The power 
windows  are not  switched  off  until  the  dr iver's  door  or  passenger's  door  has 
been ope ned. 
What  to  do  after  a  malfunct ion 
The one-touch  open  and  close  function  must 
be reactivated  if  the  battery  hos  been  discon
nected . 
• Pull and  hold the  power  window  switch  un
til  the  w indow  is fully  closed. 
•  Release the  sw itch  and then  pull  it  again for 
at  least  one second. 
Valet  parking 
The  valet  parking  feature  protects  the  lug
gage  comportment  from  unauthorized 
ac 
cess . 
Fig. 33 Valet  parking  bu tton 
With  "valet  parking"  activated,  the  luggage 
compartment  lid  cannot  be opened. 
•  Remove the  mechanical  key¢ 
page  31. 
• Open the  glove compartment  and activate 
¢ 
fig.  33 the  "valet  parking"  feature by 
pressing  the 
! VALE TI button . The  indicator 
light  in the  sw itch  illuminates . 
.,..  Close the  glove compartment  and  lock it 
w ith  the  mechanical  key . 
liJJ,, 
41  
Page 85 of 318
the stored  position  as  soon  as  you switch on 
the  ignition. 
Starting  and  stopping 
the  engine 
Starting  the  engine 
This  button  switches  on  the ignition  and 
starts  the engine. 
Fig. 85 Center  console:  S TART ENGINE S TOP b utton 
Switching  the  ignition  on/off 
• To switch  the  ignition on/off,  press  the 
I START ENGINE STOPI button.  Do not  press 
the  brake  pedal  while  doing  this. 
Starting  the  engine 
•  Press  the  brake  pedal QA . 
• Press  the !START ENGINE STOPI button 
Q fig . 85. The  engine  will start. 
If the  engine  does  not start  immediately,  the 
starting  process  is automatically  stopped  af
ter  a short  time.  Repeat  starting  procedure. 
Start-Stop-System*: 
When  you  stop  and  the  Start -Stop -System* 
turns  off  the  engine,  the  ignition  still  remains 
switched  on. 
- If you  press  the !S TART ENGINE STOPI but
ton  now,  the ignition  will  be switched  off. 
The  engine  will  not start 
¢page  89. 
- Make  sure that  the  ignit ion  is switched  off 
before  exiting  the  vehicle. 
Switching  the  ignition/engine  off 
automatically* 
The  follow ing  applies  to  vehicles  with  Start
Stop-System*:  to prevent  the  battery  from 
On  the  road  83 
draining,  the  ignition  and  the engine  will 
switch  off  automatically  under  the  following 
cond itions: 
- The  vehicle  has  already been driven. 
- The  driver's  door is opened. 
- The  driver's  seat  belt  is removed . 
- The  brake  pedal  is not  pressed  down. 
- The  vehicle  is stationary. 
In this  case,  the  activated  low  beam  will  be  re
placed  by the  side  marker  lights. The  side 
marker  lights  will switch  off  after  a  certain  pe
riod  of time  or  when  you  lock the  vehicle . 
A WARNING 
-Never allow  the  engine  to  run  in conf ined 
spaces  -danger  of asphyx iation. 
- Never turn  off  the  engine  until  the  vehi
cle  has  come  to  a  complete  stop. 
- The  brake  booster  and  power  steering 
only  work  when  the  engine  is running.  If 
the  engine  is off,  you  have to  use  more 
force  when  steering  or  braking.  Because 
you  cannot  steer  and brake  as  you usual
ly would,  this  could  lead to crashes  and 
serio us  injuries. 
(D Note 
- Avo id  h igh  engine  rpm,  full  throttle and 
heavy  engine  loads  until the  engine  has 
reached  operating  temperature - other
w ise  you  risk engine  damage. 
- The  engine  cannot  be  started  by pushing 
or towing  the  vehicle. 
@ Tips 
-After  a  co ld engine  is started,  there  may 
be  a  brief  period  of inc reased  noise be
cause  oil pressure  must  first  build  up in 
the  hydraulic  valve adjusters.  This is nor
ma l and  not  a  cause  for  concern. 
-If you  leave  the  vehicle  with  the  ignition 
switched  on, the  ignition  w ill switch  off 
after  a  certain  period of time.  Please 
note  that  electrical  equipment  such  as 
exterior  lights  will  sw itch  off  as  well 
when  that  happens.  
Page 86 of 318
84  On  th e road 
Stopping  the  engine 
• Bring your  vehicle  to  a complete  stop. 
•  Move the  selecto r lever to  the  P or  N posi
t ion . 
• Pre ss the I START ENGINE STOP I button 
¢ page 83, fig. 85. 
When  you s top  and the  Sta rt- Stop -Sys tem* 
turns  off  the  engine,  the  ignit ion  remains  on . 
Press the 
I STAR T ENGINE ST OP I button  to 
switch  the  ignition  off  during  a stop  phase. 
Steering  lock 
The stee ring  lo cks w hen you t urn the  engine 
off  using the 
I S TART ENGINE STOP I button 
and open  the  dr iver's  door . The locked  steer
ing  helps  prevent  vehicle  theft . 
Emergency  off 
If  necessary, the  eng ine ca n be sw itched  off 
with  the  selector  lever  in the  R, Dor  S pos i
tions . The eng ine stops  if  you press the 
I START ENGINE STOP ! button  at  speeds be low 
6  mph  (10  km/h) . 
A WARNING 
-Never turn  off  the  engine  before  the  ve
hicle  has come to  a complete  stop.  The 
full  function  of  the  brake  booster  and the  power  steering  is not  quara nteed.  You 
must  use more  force  to  turn  or  b rake if 
necessary. Because you cannot  stee r and 
brake as you  usua lly would,  th is could 
lead to  c rashes and  serious  injur ies. 
- For safety  reasons, you  shou ld always 
par k your  vehicle  with  the  se lector  lever 
in  P. Otherwise,  the  ve hicle co uld  i nad
vertent ly roll  away . 
- After  the engine  has been switched  off, 
the  radia tor  fan can continue  to run fo r 
up to  10  min utes  -even with  the  ign it ion 
switched  off.  It  can a lso switch  on  again 
after  some  time  if the  coolant  tempera
ture  rises as the  result  of  a heat  buildup 
or  if  the  engine  is hot  and the  engine 
compartment  is addit ionally  heated  by 
the  su n's  rays. 
(D Note 
Do not  stop  the  eng ine immediately  after 
hard or  extended  driving . Keep the  eng ine 
runn ing for  approximate ly two  minutes  to 
prevent  excess ive  heat  bu ild-up. 
Driver  message  in  the  instrument 
cluster  display 
Ignition  i s on 
This message appears  and a warning  tone 
sounds  if you open  the  driver's  door  when  the 
ignition  is sw itched  on. 
Press brake pedal to  start  eng ine 
This message appears  if  you  press the 
I START ENGINE STOPI button  to  start  the  en
gine  and do  not  depress the  brake  pedal.  The 
engine  can only  be started  if  the  brake  pedal 
is depressed . 
!!I Is  key in the  vehicle ? 
If  the  indicator  ligh t turns  on  and  the mes
sage appears, the  remote control key was re
moved from  the  vehicle  whi le the  engine  was 
runn ing . If  the  ignition  key is not  in the  veh i
cle you will  not  be able  to  switch  on the  igni
tion  or  restart  the  engine  after  it  has bee n 
switched  off . You will  also  not  be able to  lock 
the  ve hicle from  the  outs ide . 
Shift  to  P , othe rwise v ehicle can  roll  away. 
Doors do not  lock if  le ver is not  in P . 
This driver  message appears for  safety  rea 
sons if  the  transmission  has not  been shifted 
to  the  P position  when  you switc h the  ignition 
off . Move the  selector  lever to  the  P position. 
O therwise  the  vehicle  is not  p rotected  from 
r o ll ing a nd ca nnot  be locked. 
rJl Ke y i s not  recognized . Hold  back of ke y 
aga inst marked  area.  See owner's  manual. 
If  the  indicator  light  turns  on  and this  mes
sage appears,  there  is a malfunct ion 
¢ page 85. 
Tu rn off  ignition  before  leaving c ar  
Page 87 of 318
This  message  appears if the  driver's  door  is 
opened  while  the  ignition  is switched  on . Al
ways  sw itch 
off the  ignition  if you  are  leaving 
the  vehicle . See  also 
<=:> page  83. 
Shift  to  P  and  turn off ignition  before  leav
ing car , otherwise  vehicle  can roll away 
This message  appears  if the  driver's  door  is 
opened  while  the  ignition is  sw itched  on  and 
the  selector  lever  is not in the  P position.  Shift 
the  selector  lever  into the  P position  and 
sw itch 
off the  ign ition  when  you  ex it  the  vehi
cle . Otherwise  the  vehicle  could  ro ll. See  al so 
¢page  83. 
Starting  the  engine  if  there  is a 
malfunction 
It  may  not  be possible  to start  the  engine  un 
der certain  circumstances,  for  example if  the 
battery  in  the vehicle  key is  drained, if inter
ference  has  affected  the  key or if there  is a 
system  malfunction . 
I 
----- ~ 
Fig . 86 Ce nter  conso le /maste r key:  starting  th e en gine 
if  th ere  is a  malfunction 
Requirement : The  message Key not  recog
nized.  Hold  back  of key against  marked  area. 
See owner's  manual. 
must appear  and  the  in
d icato r 
light m) must  switch  on. 
•  Hold  the  master  key vert ical ly in the  loca
t ion  indicated 
y>l) c::> fig.  86. 
•  Press  the  brake  pedal c::> &. in Starting  the 
engine  on page  83. 
... press  the ""I s=-= T,,.,A -= R=-= T =- E= N ,-,..,= G=I  '""' N -=E '""'s=-= T,,., O""' P""' I button  . 
The  engine  will  start . 
•  Drive to  your  authorized  Audi  dealer  imme
diately  to  have the  malfunction  correc ted . 
On  the  road  85 
@ Tips 
You can  view  the  message  again  by  press
i ng  the 
I START  ENGINE  STOP! button. 
Electromechanical 
parking  brake 
Operation 
The electromechanical  parking  brake  replaces 
the  hand  brake. 
Fig. 87  Center co nsole: Parking  b rake 
•  Pull  on  the  switch  C®l ¢ fig.  87 ® to  apply 
the  parking  brake.  The  indicator  light  in the 
switch  illuminates. 
•  Step  on  the  brake  pedal  or  the  accelerator 
pedal  and  press  the switch  ©lat  the  same 
time  to  release  the  park ing  brake.  The  indi
cator  light  in  the  switch  goes  out. 
Your vehicle  is equipped  with  an  electrome chanical  parking  brake . The  parking  brake  is 
designed  to  prevent  the  veh icle from  rolling 
unintentionally  and replaces  the  hand  brake . 
In  add ition  to  the  normal  functions  of  a  tradi
tional  hand  brake,  the  electromechanical 
parking  brake  provides  various convenience 
and  safety  functions. 
When  starting  from  rest 
-The  integral  starting  a ss ist  helps  you  when 
dr iving  by  automatically  releasing  the  park
ing  brake 
¢ page  86,  Starting  from  rest . 
-When  starting on  inclines,  the  starting  as -
sist  prevents  the  vehicle  from  unintentional-
ly  rolling  back. The  braking  force of the 
park ing  brake  is  not  re leased  until  sufficient 
1111- 
Page 88 of 318
86  On  the road 
driving  force  has  been  built  up  at  the 
wheels. 
E mergency brake function 
An emergency  brake  ensures  t hat  the  vehicle 
can  be  slowed  down  even  if the 
normal brakes 
fail 
c::> page  87,  Emergency  braking . 
Indicator  lights 
-If the  parking  b rake  is closed  w ith  the  igni
t ion 
sw itch ed  on the  indicator  lights  come 
on  - (USA models)/ . (Canada  models) 
i n the  i nstr ument  cluster  and  in the  switch . 
- If  the  par king  brake  is closed  w ith  the  igni
t ion 
s wit ched  off the  indicato r lights  come 
on  - (USA models)/ . (Canada  models) 
in the  instrument  cluster  and  in the  switch 
for  about  20  seconds. 
.&_ WARNING 
Do not  press  the  accelerator  peda l inadver
tently  if the  vehicle  is  stat ionary  but  the 
eng ine  is  running  and  a  gear  is  selected. 
Otherw ise  the  vehicle  will start  to  move 
immed iate ly and  could  result  in a  crash . 
@ Note 
If  the  symbo l.  in the  display  or  the  ind i
cator  light 
1111 (USA  models) . (Cana
da  models)  in the  instrument  cluster  flash
es,  there  is a  malfunction  in the  brake  sys
tem . Please  refer  to  the  detai led  descrip
tion  of  the  indicator  lights 
c::> page  14. 
- If  the  indicato r light - (USA mod-
els) .  (Canada  mode ls)  or 
liJ turns 
on,  there  may  be  a  malfunction  in the  parking  b rake 
c::> poge  15. 
(D Tips 
- You can  apply  the  pa rking  brake  at  any 
t ime  - even  w ith  the  ignition  switched 
off . T he  ignit ion  must  be  on  in order  to 
r elease  the  parking  brake. 
- Occ asiona l noises  when  the  par king 
brake  is applied  and  re leased  are  no rma l 
and  are  not  a  ca use  for  concern . 
- When  the  vehicle  is par ked,  the  par king 
brake  goes  through  a se lf -test  cycle  at  regu
lar  interva ls.  Any associated  noises 
are  normal. 
Parking 
Parking 
.,.  Stop  the  vehicle  with  the  foot  brake . 
.,.  Pull the  switch(®)  to  apply  the  parking 
brake. 
.,.  Select  the  P selector  lever  position 
c::>page  115. 
.,. Turn  the  engine  off c::> _&. . 
In  addit ion on inclin es and g rades 
.,.  Turn  the  steering  whee l so  that  your  vehicle 
w ill roll  aga inst  the  curb  in  ca se  it should 
start  to  move. 
.&_ WARNING 
- When  you  leave  your  vehicle  - even  if on
ly br iefly  - always  take  the  ignit io n  key 
wit h you.  This  applies  pa rticularly  when 
children  remain  in  the  vehicle.  Otherwise 
the  children  co uld  s tart  the  engine,  re
lease  the  parking  brake  or operate  elec 
trica l equipment  (e.g . power  windows) . 
There  is the  r isk  o f an  accident. 
- When  the  vehicle  is  locked,  no  one  - par
ticularly  not  children  should  rema in  in 
the  vehicle.  Locked doors  make  it  more 
d ifficult  for  emergency  workers  to  get  in
to  the  vehicle  - putting  lives  at  risk . 
·  Starting  from  rest 
The starting  assist  function  ensures  that  the 
parking  broke  is released  au tomatically  upon 
star ting. 
Stopping  a nd applying  parking  brak e 
.,.  Pull the  switch(®)  to  apply  the  parking 
brake. 
St arting  and  automatically  releasing  the 
parking  brake 
.,.  When  you  start  to  drive  as  usual , the  park
ing  brake  is a utomatically  rel eased  and  your 
vehicle  beg ins  to  move.  ..,..  
Page 89 of 318
When  stopping  at  a traffic  signal or stopp ing 
i n  city traffic,  the  parking  brake  can be ap
p lied . The vehicle does  not  have to  be  held 
with  the  footbrake.  The park ing brake elimi
nates  the  tendency  to  creep with  a drive range 
engaged.  As soon  as you dr ive off as usual, 
the  park ing brake  is released  automatically 
and  the  vehicle starts  to  move . 
Starting  on  slopes 
When  starting  on inclines, the  start ing ass ist 
prevents  the  vehicle from  unintentionally  roll
i ng back. The braking force  of the  parking 
brake is not  released  until  sufficient  dr iv ing 
force  has  been  bu ilt  up at  the  whee ls. 
O') Tips 
For safety  reasons,  the  park ing brake  is re
leased  automatically  only when  the  dr iv
er's  safety  belt  is engaged  in  the  buck le. 
Starting  off  with  a trailer 
To prevent  rolling back unintentionally  on an 
incline, do the  following: 
..  Keep the  switch(®)  pulled  and  depress  the 
acce lerator.  The park ing brake stays  applied 
and  prevents  the  vehicle from  rolling  back
ward . 
..  You can release  t he sw itch  C®l once you are 
s u re that  yo u are develop ing eno ugh f or
wa rd  momentum  at  the  wheels  as you de
press  the  accelerator. 
D epending  on the  weight  of the  r ig  (veh icle 
and  trai le r) and  the  severi ty of the  in cli ne, you 
may roll backwards  as you sta rt.  Yo u can pre 
ve nt  roll ing backwards  by holding  the  parking 
brake switch C®) p ulled  out  and  acce lerating  -
just  as you would when  starting  on a hill with 
a conventional  hand  brake. 
On  th e ro ad  87 
Emergency braking 
In  the  event  that  the  conventional  brake sys
tem  fails  or locks . 
..  In an  emergency,  pull the  sw itch(®) and 
cont inue to  pull  it to  s low your ve hicle down 
w ith  the  park ing brake. 
..  As soon  as you release  the  switch  C®> or ac-
celerate,  the  b ra ki ng process  stops. 
If you pu ll the  switch  C®> and  hold it above  a 
speed  of about  5  mph  (8 km/h),  the  emergen
cy brak ing f unction  is  initia ted . T he ve hicle is 
braked  at  all fou r whee ls by activating  the  hy
d raulic  brake sys tem.  The brake  pe rform ance 
is simila r to  making  an  emergency  stop~ .&.. 
In order  not  to  act ivate  the  emergency  brak
ing by mis take, an  audib le wa rn ing tone  (buz
z er) so unds whe n the  switch(®)  is pulled . As 
soon  as the  sw itch<®> is  re leased,  or the  accel
erator  peda l is depressed,  emergency  braking 
stops. 
_& WARNING 
Emergency braking  should  only be used  in 
an  emergency,  when  the  normal  foot  bra ke 
has fa iled  or the  brake  pedal  is obstructed. 
Using the  parking  brake to  pe rform  emer
gency  b rak ing will slow your vehicle down 
as  if you had  made  a full bra ke application . 
T he  laws of physics  cannot  be  su spended 
even wi th ESC and  i ts  asso ciated  compo
nents  (ABS, ASR , ED L) . In corners  and 
when  road or weather  con ditions  are  bad, 
a full  brake application  can ca use  the  vehi
cle to  sk id or the  rear  end  to  break  away  -
risking an accident. 
Start-Stop-System 
Description 
Applies to  veh icles:  w ith  Start -Stop-System 
The  Sta rt -Stop -Sys tem  can help  incre ase  fuel 
e conomy and  redu ce CO2 emissions. 
In the  Start-S top-mode,  the  engine  shuts  off 
a utomat ically when  the  veh icle is stopped, 
s u ch a s at  a t raff ic lig ht.  The  igni tion  rem ains 
lill- 
Page 90 of 318
88  On  the  road 
switched  on during  this  stop phase. The en 
gine  will  be automatically  restarted when 
needed. 
The  last  Sta rt-Stop -System  setti ng (on/off  us
ing  the  button 
l(A) ,.,I) wi ll be restored  when  the 
ignition  is turned  on. The  LED in the 
l(A) "'I but
ton  turns  on when  the  Start-Stop -System  is 
switched  off  manua lly. 
Basic  requirements  for  the  Start-Stop 
mode 
- The  driver's  door  is closed . 
- The  driver'  seat  be lt  is latc hed. 
- T he hood  is closed. 
- T he veh icle must  have been  driven  faster 
than  2.5  mph  (4 km/h) since the last  stop. 
- A trai ler is not  hitched  to  the  vehicle. 
A WARNING 
-Never  let the  vehicle  roll with  the engine 
switched  off.  You could lose cont rol over 
the  vehicle . This can  lead  to a coll ision 
and serious  injuries . 
- Th e brake  booster  and the  steer ing  sup
port  do  not  work  while  the  eng ine  is 
switched  off.  More force  is  required  to 
stop  and  to steer  the  vehicle. 
- To reduce  the  risk  of  injuries,  make sure 
that  the  Start-Stop-System  is turned  off 
when  working  in the  engine  compart
ment¢ 
page 89. 
(D Note 
Always  switch  off  the  Start-Stop -System 
when  driv ing th rough  water~ 
page 89. 
Starting/stopping  the  engine 
Applies to  vehicles:  w ith  Start -Stop -System 
Fig.  88 Instrument  clus ter: engine  sw itche d off (s top 
phase) 
..  Slow the  veh icle  to a stop  using  the  brake 
and  keep pressing  the  brake pedal.  The en
g in e will  sw itch  off. The 
D] indicator  light 
appears in the  information  line  in the  instru
ment  cluster  display. 
..  When  you take  your  foot off  the  brake ped 
al, the  engine  restarts.  The indicator  light 
turns  off. 
Additional  information 
The  engine  will  switch  off  in the  P,  D, N and S 
positions  as well  as  in manual  mode . In  the  P 
pos ition,  the  engine  wi ll also  remain  off  if you 
take  yo ur foot  off  the  brake pedal. The engine 
starts  again when you select  another  selector  lever  position and take your  foot  off  the  brake 
pedal. 
If  you select  the  R position  during  a Stop 
phase,  the  engine  will  start  again. 
Shift  from  D to  P  quickly to  prevent  the  engine 
from  starting  un intentionally  when  sh ifting 
through  R. 
You can determine  for  yourself  if  the  engine 
will  stop  or  not  by  reducing or increasin g the 
amount  of  force  you  use to  press the  brake 
pedal.  For example,  if  you only  lightly  press 
on  the  brake pedal  in stop-and  and-go  traffic 
or when  turning,  the engine  will  not  switch  off 
when  the  veh icle  is stationary.  As soon as you 
press the  brake down  ha rder, the  engine  wi ll 
swit ch off.  ..,  
Page 91 of 318
@ Tips 
When  you  stop  and the  start-stop-system 
turns  the  engine  off,  the  ignition  remains on.  Make sure that  the  ign ition  is switched 
off  before  exiting  the  vehicle. 
General  information 
App lies  to  vehicles:  with  Start-Stop-System 
The standard  Start-Stop-mode  can be cancel· 
led for  different  system-related  reasons. 
Fig. 89 Instrument  cluster : eng ine-Stop  temporar ily 
u navailable 
Engine will  not  switch  off 
Before each stop  phase, the  system  checks if 
certain  cond itions  have been met . For  exam
p le, the  engine  will 
not be switched  off  in the 
following  situations: 
- The  engine  has not  reached  the minimum 
required  temperature  for  Start -Stop-mode . 
- The interio r temperature  selected  by  the A/C 
system  has not been  reached. 
- Th e outside  temperature  is extremely  h igh/ 
low. 
- The  windshield  is  being defrosted 
9page  81. 
- The parking  system* is switched  on. 
- The battery  charge  level is too  low . 
- The steering  wheel  is sharply  turned  or  there  is a steer ing  movement. 
- After  engaging  the  reverse gear. 
- On sharp  inclines . 
The 
(jj indicator  light  appears  in the  informa
tion  line  in  the  instrument  cluster  display 
9fig. 89. 
On  the  road  89 
Engine  automatically  restarts 
The stop  phase  is interrupted  in  the following 
situations,  for  example.  The engine  restarts 
without  any action  by the  driver. 
- The  interior  temperature  varies from the 
temperature  selected  in the  A/C system. 
- The windsh ield  is being  defrosted 
9page  81. 
-The brake pedal  is pressed severa l times  in a 
row. 
- The  battery  charge level  becomes too low . 
- High  power  consumpt ion. 
@ Tips 
If  you shift  into the  D,  Nor S positions  af
ter  sh ifting  into 
reverse, the  vehicle  must 
be driven  faster  than  6  mph  (10  km/h)  in 
order  for  the  engine to sw itch off  aga in. 
Switching  the  Start-Stop-System  on/off 
manually 
App lies  to  vehicles:  wi th Start-Stop-Sys te m 
If you  do not  wish  to  use  the system,  you  can 
switch  it off  manually. 
Fig. 90 Center  console:  Start-Stop-System  button 
.,.  To  switch  the  Start-Stop-System  off/on 
manually,  press the 
l <A> "'I button.  The LED  in 
the  button  turns  on when  the  system  is 
sw itched  off. 
@ Tips 
If  you  switch  the system  off during  a stop 
phase, the  engine  will  start  again  auto
matically.  
Page 92 of 318
90  On  the  road 
Messages in the  instrument  cluster 
display 
Applies to  vehicles:  with  S ta rt-Stop-System 
Start-S top  sy stem  de activated:  Pl ea se re
s ta rt engine  manually 
This  message  appears  when  specific  condi
tions  are  not  met  dur ing  a stop  phase  and  t he 
Start -Stop -System  will 
not be  ab le  to  restart 
the  engine. 
If the  D or  R se lector  lever  posi
t ions  were  engaged, 
P will be  selected  auto 
m atica lly. The  engine  must  be  started  with 
the 
! START ENGIN E STOPI button . 
Start-Stop  system : Sy stem  fault!  Function 
un available 
There  is a  malfunc tion  in  the  Sta rt-Stop-Sys
tem . Dr ive the  vehicle  to  an  au thorized  repair 
fac ility for  servicing  as  soon  as  possible  to  cor
rect  the  malfunction. 
Speed  warning  system 
Introduction 
The speed  warning system  helps you  to stay 
under  a specified  maximum  speed . 
The speed  warning  system  warns  you  if you 
are  exceeding  the  maximum  speed  that  you 
have  set . You will  hear  a  warn ing  tone  when 
your  speed  exceeds  the  stored  value  by ap
p rox imately  3  mph  (3  km/h) . An  indicato r 
l ig ht .  (USA models)/ . (Canada  mode ls)  i n 
the  ins trumen t clus ter  display  also  t urns  on  at 
the  same  time . The  ind icator  light 
a;m 
turns  off  when  the  speed  decreases  below  the 
stored  maximum  speed. 
Se tting  a  thresho ld  is re commended  if yo u 
wo uld  like to  be  reminded  when  you  reach  a 
certain  maximum  speed.  Situations  where  you  may  want  to  do  so  include  driv ing  in a  country 
with  a  general  speed  Limit or  if there  is a 
specified  max imum  speed  for  winter  tires . 
@ Tips 
Even though  your  vehicle  is equipped  with 
a  speed  warning  system,  you  should  st ill watch  the  speedome
ter  to  ma ke s ure you 
are  not  dr iving  faster  than  the  speed  limit . 
Setting  the  threshold 
You can set,  chang e and  delet e the  threshold 
in the  MMI. 
•  Select: I CAR I func tion  button > Car sy stem s 
contro l but to n > Driver a ssist > Speed  warn
ing . 
You can  set  any  threshold  betwee n 20 mph 
(30 km/h)  and 150 mph (2 40 km/h).  Se tting s 
can  each  be  adj usted  in incremen ts of 
5 mph 
(10 km/h). 
Cruise  control 
Switching  on 
The cruise con trol sys tem  makes  it possible  to 
drive at  a constant  speed  starting  at  20  mph  (30  km/h) . 
Fig. 91  Contro l leve r wit h set  b utton 
Fi g.  92  D isp lay : Se lecte d sp ee d 
•  Pull the  lever  to  position@~ fig.  91 to 
s w itch  the  system  on. 
•  Dr ive at  the  speed  you  w is h  to  set . 
.,.  Press  button  @to set  that  speed.  
Page 95 of 318
Audi adapt ive crui se  c ontrol  an d  bra kin g guard  9 3 
Audi  adaptive  cruise 
control  and  braking 
guard 
Introduction 
App lies  to  vehicles:  with  Audi adaptive  cruise  control 
The  adaptive  cruise  control  system assists  the 
driver  by regu lating  vehicle  speed  and  helping 
to  maintain  a set  distance  to  the  vehicle 
ahead,  within  the  limits  of  the  system . If  the 
system  detects  a  moving  vehicle  up  ahead, 
adaptive  cruise  control  can brake  and  then  ac
celerate  your vehicle.  This  helps  to  make  driv
ing  more  comfortable  both  on long highway 
stretches  and  in stop-and-go  traffic. 
The  braking  guard  system  can  warn  you  about 
an  impending  collision  and  initiate braking 
maneuvers  ¢ 
page 99. 
Adaptive  cruise  control  and  braking  guard 
have  technical  limitations  that you  must 
know,  so please  read  this  section  carefully,  un
derstand  how  the system  works  and use them 
properly  at  all  times. 
General  information 
General  information 
Applies  to  vehicles:  with  Audi adaptive  cruise control 
Fig. 93 Front  of the  vehicle:  sensors  and  video  came ra 
The  areas  that  contain  the  radar  and  ultrason 
ic sensors  and  the  v ideo  camera ¢ 
fig. 93 
must  neve r be  covered  by stickers  or  other  ob
jects  or  obstructed  with  dirt,  insects, snow  or 
ice that  will  interfere with  the  adaptive  cruise 
control  system  and  braking  guard.  For  infor
mation  on  cleaning,  refer  to ¢ 
page 218. The  same  applies  for  any  modifications  made  in 
the  front  area. 
T he  function  of  the  adaptive  cru ise  contro l 
system  and  braking  guard  is limited  under 
some  conditions: 
- Objects  can  on ly be  detected  when  they  are 
w ith in sensor  range 
¢page 95, fig. 96 . 
-The  system  has  a  limited  ability  to  detect 
objects  that  are  a  shor t distance  ahead, 
off 
t o the  side  of your  vehicle  or  moving  into 
your  lane. 
- Some  kinds  of  ve hicles  are  hard  to  detect; 
for  examp le  motorcycles,  vehicles  with  high 
ground  clearance  or  overhanging  loads  may 
be  detected  when  it is too  late  or  they may 
not  be  detected  at all. 
- When  driving  through curves 
¢page 94 . 
- Stationary  objects¢ page 94. 
& WARNING 
Always  pay  attent ion  to  traffic  when  adap 
tive  cruise  control  is switched  on  and  brak ing  g uard  is active.  As the  driver,  you  are 
still  respons ible  for  starting  and  for  ma in
taining  speed  and  distance to other  ob
jects . Braking  guard  is  used  to  assist  you . 
The  driver  must  always  take  action  to  avo id 
a  collision.  The  driver  is always  responsible 
for  braking  at  the  co rrect  time. 
- Improper  use  of  adaptive  cru ise  control 
can  cause  collisions,  other  acc idents  and 
serious  pe rsonal  in jury. 
- Never  let  the  comfort  and  conven ience 
that  adaptive  cruise  control  and  braking 
guard  offer  d istract  you  from  the  need  to 
be  alert  to  traffic  condit ions  and  the 
need  to  rema in  in full  control  of your  ve
hicle  at  all  times, 
- Always remember  that  the  adaptive 
cruise  control  and  braking  guard  have 
limits  -they  will  not  s low  the  vehicle 
down  or  maintain  the  set  distance  when 
you  drive  towards an  obstacle  or  some
thing  on  or  near  the road  that  is  not 
mov ing,  such  as  vehicles  stopped  in  a 
traffic  jam,  a  stalled  or  disabled  vehicle . 
I f  registered  by the  radar  sensors,