check engine AUDI A7 2015 User Guide
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Page 78 of 316

76  On  the  road 
column  will  continue  moving  as long  as you 
are pressing  the  switch. 
There must  be at  least  10  inc hes (25  cm)  be
tween  you r chest  and the  center  of  the  steer 
ing whee l. 
If you  cannot  sit  more  than  10  in
ches (25  cm) from  the  steering  whee l, see if 
adapt ive equipment  is available  to  help you 
reach the  pedals  and increase the  distance 
from  the  steer ing wheel. 
F or  detai led information  on how to  adjust  the 
driver's  seat,  see 
<::> page 54 . 
In vehicles with  the  memory  f unction* , the 
steering  column  settings  are stored  together 
with  the  seat  position. 
A WARNING 
Improper  use of  steering  wheel  adjust
ment  and  improper  seating  position  can 
cause se rious  personal  injury. 
- Adjust  the  steer ing whee l column  on ly 
when  the  vehicle  is not  moving  to  pre
vent  loss of  veh icle cont rol. 
-
- Adjust  the  driver's  seat  or steering  wheel 
so that  the re is a min imum  of  10 inches 
(25  cm)  between  your  chest and the 
steering  wheel ¢ 
page  129,  fig.  148. If 
you can not  maintain  this  min imum  dis
tan ce, the  airbag  system  cannot  protect 
yo u properly. 
- If  p hys ica l limi tations  prevent  y ou from 
sitting  10  in ches (25  cm)  o r more  from 
the  steering  wheel,  check with  yo ur au
tho rized Aud i dealer  to  see  if adaptive 
equipment  is availab le . 
- If  the  steerin g wheel  is aligned  wi th you r 
face,  the  supp lemental  drive r's airbag 
cannot  prov ide as much  protect ion  in an 
acc ident.  A lways make sure that  the 
steering  wheel  is aligned  with  your 
chest. 
- Always  hold  the  steering  wheel  with  your 
hands at  the  9 o'clock  and  3 o'clock  posi
t ions to  reduce the  risk  of  pe rsonal  injury 
if  the  d river 's airbag  deploys. 
- Never hold  the  steer ing whee l at  the  12 
o'clock  posit ion or w it h  your  hands  i nside  the  steering  wheel  rim  or  on the  steering 
wheel  hub.  Hold
ing the  steer ing wheel 
the  wrong  way can cause serious  injuries 
to  the  hands, arms  and  head  if the  driv
er 's airbag  deploys. 
Easy entry  feature 
Applies  to  vehicles:  with  electrically  adjustable  steering 
wheel 
The easy  entry  feature  makes  it easier  to  en
ter and  exit  the  vehicle by automatically  ad
justing  the steering  wheel. 
..  Select in  the MM I: ICAR I fu nction  button> 
(Car )*  sys tem s control  b utton  > V ehicle  set
ting s 
> Seat s > Driver 's seat > Easy entry > 
On . 
When  the  easy ent ry feature  is turned  on, the 
steering  wheel  moves up to  the  park  position 
when you switch 
off the  ignition.  After  you  en
ter  the  veh icle, the  steering  wheel  moves to 
the  stored  position  as soon as you  sw itch  on 
the  ignit ion. 
Starting  and  stopping 
the  engine 
Starting  the  engine 
This button  switches  on the  ignition  and 
starts  the  engine. 
Fig . 81 Ce nter  console:  S TART ENGINE S TOP b utto n 
Switching  the  ign ition  on /off 
•  To switch  the  ign ition  on/off,  press the 
I  STAR T ENGINE ST OPI button . Do not  p ress 
the  brake pedal while  doing  this . Diesel 
veh icles are preheated  while  the  ignit ion  is 
sw itched  on .  ..,.  
Page 84 of 316

82  On  the  road 
lever  position  and  take  your  foot  off  the  brake 
pedal. 
If  you  select  the R position  during  a  Stop 
phase,  the  eng ine  will  start  aga in. 
Shift  from 
D to P quickly  to  prevent  the  engine 
from  starting  unintentionally  when  shifting 
through 
R. 
You can  determ ine  for  yourself  if the  eng ine 
will  stop  or  not  by reduc ing  or  increasing  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  traff ic 
or  when  turning,  the engine  will  not  switch  off 
when  the  vehicle is stationary . As soon  as  you 
press  the  brake  down  harder,  the  eng ine  will 
switch  off. 
General  information 
Applies  to  vehicles:  with  Start-Stop-System 
The standard  Start-Stop-mode  can be cancel
led  for  different  system-related  reasons . 
Fig. 85 Instrum ent  cluster:  engine -Stop  tempo ra ril y 
u navailab le 
Engine will  not  switch  off 
Before each  stop  phase,  the  system  checks  i f 
certain  cond it ions  have  been  met.  For exam · 
p le,  the  engine  will 
not be  switched  off  in the 
following  situations: 
- T he  eng ine has  not  reached  the  minimum 
required  temperature  for Start-Stop-mode . 
- The  inter ior temperature  selected  by  the  A/C 
system  has  not  been  reached . 
- T he outside  temperature  is extremely  high/ 
low . 
- T he w indshield  is  being  defrosted 
¢page 71, ¢ page  73. 
- The  parking  system*  is  switched on. 
- The  battery  charge  level is too  low. 
- The  steering  wheel  is sharply  turned  or 
there  is a steering  movement. 
- After  engaging  the  reverse  gear . 
- On sharp  inclines. 
The 
fjJ indicator  light  appears  in the  informa
tion  line  in the  instrument cluster display 
¢fig . 85. 
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  windshie ld is being  defrosted 
<:!;>page  71, ¢page  73. 
-The  brake  pedal  is  pressed  several  times  in  a 
row . 
- The  battery  charge  level becomes  too low. 
- High  power  consumption. 
Switching  the  ignition  off  automatically 
To prevent  the  battery  from  drain ing,  the  igni
tion  w ill switch  off 
automatically when  all  of 
the  following  conditions  have  been  met : 
- The  vehicle  has  already  been  driven. 
- The  engine  has  been  turned  off  by the  Start-
Stop -System*. 
- 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  afte r approxi 
mately 
30 minutes  o r when  you  lock the  veh i
cle. 
If  the  Start-Stop  System  has 
not turned  off 
the  engine  or if you  have  sw itched  the Start
Stop  system  off  manually,  the  ignition  will 
not 
be  automat ically  switched  off  and the  eng ine 
will  continue  to  ru n 
c:!;> ,& .  ...,  
Page 114 of 316

112  Automatic  Tran sm iss ion 
-Never  leave  your  vehicle  with  the  engine 
running  while  in  gear.  If you  must  leave 
your  vehicle  when  the  engine  is running,  act ivate  the  park ing  brake  and  move  the 
selector  lever  to  P. 
- Power  is st ill transmitted  to  the  wheels 
when  the  eng ine  is  running  at  idle . To 
prevent  the  vehicle  from  "creeping",  you 
must  keep  your  foot  on  the  brake  when 
the  engine  is  runn ing  and  the  selecto r 
lever  is  in  D/S or  R or  "tiptronic"  mode  is 
selected . 
- Do not  press  the  accelera tor  pedal  when 
changing  the  selector  lever  pos ition 
whi le the  vehicle  is stationary  and  the 
engine  is running. 
- Never  shift  into 
R or  P whi le  driving. 
- Before  driv ing  down  a steep  slope , re-
duce  you r speed  and  shift  into  a  lower 
gear  with  "tiptronic". 
- Do not  ride  the  brakes  or  press  the  brake 
peda l too  often  or  too  long  when  dr iving 
down  a  hill.  Constant  braking  causes  the 
brakes  to  overheat  and  substant ially  re
duces  braking  per formance,  increases 
braking  distance  or  causes  complete  fail
ure  of  the  brake  system. 
- To prevent  the  veh icle from  rolling  back 
when  stopping  on  inclines,  always  hold  it  in  place  with  the  brake  peda l or  parking 
brake . 
- Never  hold  the  veh icle  on  an  incline  with 
a slipping  clutch . The  clutch  opens  auto 
matically  when  it  becomes  too  hot  from 
the  overload . An indicator  lamp@] illu
minates  and  a  dr iver  message  appears 
9 page  114 when  the  clutch  is overload
ed. 
- If  the  engine  must  remain  running,  never 
have  any  driv ing  pos ition  eng aged  when 
check ing  under  the  hood.  Make  sure  the 
selector  lever  has  secure ly engaged  and 
is  locked  in  P with  the  parking  brake  set 
9 page  225. Otherwise,  any  increase  in 
engine  speed  may  set  the  vehicle  in  mo
t io n, even  with  the  park ing  brake  ap 
plied . 
(D Note 
-When  stopping  on  an  incline,  do  not  try 
to  hold  the  vehicle  in  place  by press ing 
the  acce lerator  pedal  while  a  driving  gear 
is se lected.  This can  cause  the  transmis
sion  to  overheat  and  can  damage  it .  Acti 
vate  the  parking  brake  or  press  the  brake 
peda l to  prevent  the  vehicle  from  roll ing . 
- Allowing  the  vehicle  to  roll  when  the  en 
gine  is stopped  and  the  selecto r lever  is 
in  N will  damage  the  transmission  be
cau se  it  is  not  l ubricated  unde r th ose  cir
c umstances. 
(D Tips 
Fo r safety  reasons,  the  pa rking  brake  is  re
l eased  automatically  o nly when  t he d riv
er's  safety  belt  is eng aged  in the  buckle. 
Hill descent  control 
The hill descent  control  system  assists  the 
driver when  driving down  declines. 
Hill descent  cont rol  is activated  when  these
lector  lever  is in  D/S  and  yo u press  the  brake 
peda l. The  transmission  automa tical ly selects 
a  gear  tha t is suitable  fo r the  incline.  H ill de 
scent  cont ro l tries  to  ma inta in the  speed  ach 
ieved  at  the  time  of  braking,  within  physica l 
and  tec hnical  lim itations.  If  may  sti ll be  nec
essary  to  ad just  the  speed  with  the  brakes. 
Hill descent  cont ro l sw itches  off  once  the  de 
cline  leve ls  o ut  or  yo u press  the  acce lerator 
pedal. 
On vehicles  with  the  cru ise  cont ro l system * 
9 page  84 , hill  descent  control  is also  activa t
ed  when  the  speed  is  set. 
A WARNING ,____ -
Hill descent  control  cannot  overcome 
physica l lim itations,  so  it  may  not  be  ab le 
to  maintain  a  constant  speed  under  all 
conditions . A lways  be  ready  to  apply  the 
brakes .  
Page 200 of 316

198  Intelligent  technology 
-Automatic  retraction : When  speed  drops be
l ow  about  SO mph  (80  km/h),  the  rear spoil
er retracts  automatically. 
Manual  mode 
- Manual  deployment:  Tappi ng briefly  on the 
switch 
¢ fig.  183 dep loys the  rear spoiler. 
- Manua l retraction:  At  speeds  up to  about 
10  mph  (20  km/h), ret ract  the  rear spoiler 
by  pressing  and holding  the switch 
¢fig.  183 . At  speeds  between  10  mph  (20 
km/h)  and 80  mph  (130  km/h),  retract the 
rear  spoiler  by tapping  on the  switch 
¢fig . 183. 
Indicator  lights 
1,1  /. Rear  spoiler:  system malfunction! 
The rear  spoiler  may  not  have extended  due to 
a malfunction.  This could  change the  vehicle's 
driving  characteristics  at  high  speeds.  Do  not 
exceed  85 mph  (140  km/h).  Drive to  your  au
thorized  Audi  dealer  immediate ly to  have the 
malfunction  corrected . The co lor  of the  indica
tor  light  depend s on the  veh icle speed. 
A WARNING 
Dr iv ing  at  higher  speeds w ithout  the  rear 
spoiler  deployed  can impair  handling  char
acteristics,  making  the  veh icle  harder  to 
control. 
-Always  make sure that  the  spoiler  is de
ployed  when  driving  at  speeds over 
85  mph  (140  km/h).  If th e  rear spoiler 
wa rning/ind icator  light  in the instru
ment  cluster  comes on, the  rear  spoiler 
may not  have  deployed. 
- Never  drive at speeds higher  than 
85  mph  (140  km/h)  if  the  spoiler is not 
dep loyed.  Have  the spoiler  inspected  as 
soon as  possible  by an authorized  A udi 
dealer  or  qualified  workshop. 
- Always obey speed  limits  and other  traf
fic  laws. 
A WARNING 
Improper  operation  of  the  rear spoiler  can 
cause crushing  injuries.  -
Always make sure  that nobody,  especially 
children,  is in the  way when  the  rear 
spoiler  is deployed  or  retracted. 
(D Note 
- Never  push  the  vehicle  or apply  force  to 
the  rear spoiler  -it  could  be damaged. 
- To prevent  damage  to  the  rear  spoiler  do 
not  lean  or  place anything  on  it . 
- Only  operate  the  rear spoiler  man ually 
when  the  rear  lid is closed and the  rear 
spoiler  moving  parts  are not  blocked. 
Otherw ise, damage  co uld occur. 
(D Tips 
Clean the  spoiler  compartment  every  2 to 
3  months.  The spoiler  compartment  must 
always  be free  of  ice, snow,  leaves or  other 
debris. 
Braking 
General  information 
What  affects  braking  efficiency? 
Operating  conditions  and  driving  habits 
The brakes on  today's  automobiles  are still 
subject  to  wear,  depending  largely  on  operat
ing  condit ions and driving  hab its 
r:::;, ,& . On 
vehicles  that  are either  dr iven mostly  in  stop
and-go  city  traff ic or  are dr iven hard,  the 
brake  pads should  be  checked by your author
ized Audi  dea ler  more  often  than  specified in 
the 
Warranty & Maintenance booklet. Failure 
to  have your  brake pads inspected  can result 
in  reduced  brake performance. 
On  steep  slopes , you  sho uld  use  the braking 
effect  o f the  engine . This way, you  prevent  un
necessary wear  on the  brake system . If  you 
must  use your  brakes, do  not  hold  the  brakes 
down  cont inuous ly.  Pump the  brakes at  inter
vals. 
Moisture  or  road salt 
Under  certain  conditions,  for  example,  when 
driving  through  water  or very  heavy rain, or 
even after  washing  your  vehicle,  the  braking .,..  
Page 206 of 316

204  Driving  and  en vir onm ent 
Avoid  damaging  the 
vehicle 
When  you  are driving  on  poor  roads,  or over 
curbs,  steep ramps,  etc .,  make  certain  that 
low-lying  parts  such  as  spoilers  and  exhaust 
system  parts  do  not  bottom  out  and  get  dam
aged. 
This  is especially  true  for  vehicles  with  low
slung  chassis  (sports  chassis) * and  fully  load
ed  veh icles . 
Driving  through  water 
on  roads 
Note  the  following  to  avoid  vehicle  damage 
when  driving  through  water,  for  example  on 
flooded  roads: 
- T he water  must  not  be  any  higher  tha n the 
bottom  o f the  vehicle  body. 
- Do not  d rive faster  than  wa lking  speed. 
_& WARNING 
After  d riving  through  water,  m ud,  slush, 
etc.,  the  brakes  may  be  slow  to  take  effect 
because  o f wet  brake  rotors  and  pads . Dry 
the  brakes  first  by braking  carefully  to  re
store  the  full  braking  effect. 
(])  Note 
-Vehicle  components  such  as  the  eng ine, 
transmission,  suspension  or  e lectr ica l 
system  can  be  severe ly damaged  by driv
ing  through  water. 
- Always switch 
off the  Start-Stop-System 
when  driving  through  water¢ 
page  81. 
(D Tips 
-Check the  depth  o f the  water  before  driv 
ing  through  it. 
- Do no t stop  the  veh icle,  dr ive  in  reverse 
or  switch  the  engine 
off when  driving 
through  water. 
- Keep  in  mind  that  oncoming  vehicles 
may  create  waves  that  raise  the  water 
level  and  make  it  too  deep  fo r your  vehi
cle  to  drive  through  safely. 
-
- Avoid driving  through  salt  water  because 
it  can  cause  corrosion . 
Catalytic  converter 
Applies  to  vehicles : w ith  gasoli ne e ngi ne 
It  is very important  that  your  emission con
trol  system  (catalytic  converter)  is function
ing properly  to ensure  that your  vehicle  is run
ning  in  on environmentally  sound  manner. 
..  Always use  lead-free  gasoline ¢ page  217, 
Fuel supply  . 
.. Never  run  the  tank down  all  the way  to  emp
ty. 
..  Never  put  too  much  motor  o il in your  eng ine 
¢ page 229, Adding  engine  oil~-
.. Never  try  to  push- or  tow-sta rt  your  vehicle. 
The  catalytic  converter  is  an  efficient  "clean
u p"  dev ice  built  into  the  exhaust  system  of 
the  ve hicle.  The  cata lytic  conve rter  bu rns 
many  of the  pollutants  in the  exha ust  gas  be
f ore  they  are  re leased  into  the  atmosphere. 
The  exclusive  use  of  unleaded  fuel  is c rit ically 
important  fo r the  life  of the  catalyt ic convert
er  and  prope r fu nct ion ing  of  the  engine. 
A WARNING 
-
The temperature  of the  exhaust  system  is 
h igh,  both  when  driving  and  after  stopping 
the  engine. 
- Never  touch  the  exhaust  tail  pipes  once 
they  have  become  hot . This  could  result 
in burns . 
- Do not  park  or  operate  the  vehicle  in 
areas  where  the  hot  exha ust  system  may 
come  in  contact  with  dry  grass,  brush, 
fue l spill  or  other  material  which  can 
cause  a fire . 
- Do not  app ly additional  undercoating  or 
rustproofing  on  or  near  the  exhaust 
manifold,  exhaust  pipes,  catalytic  con
verter  or  heat  shields.  Dur ing  driv ing,  the 
substance  used  fo r undercoating  could 
overheat  and  cause  a fire. 
~  
Page 208 of 316

206  Driving  and  en vir onm ent 
The consumption  estimates  as  published 
by ENVIRONMENTAL PROTECTION AGENCY 
(EPA) and Transport  Canada  may not  corre
spond  to  your actual  consumption  on the 
road, which will vary depending  upon  vehi 
cle load and  speed,  road and weather  con
ditions,  tr ip  length,  etc . 
Drive  smoothly  and  keep a  lookout 
ahead 
Vehicles use  the  most  fuel  when  they  are  ac
celerating. 
•  Avoid unnecessary  accelerating  and  braking. 
Vehicles use  the  mo st fuel  when  they are  ac
celerating . If you anticipate  what  is go ing to 
happen  next,  you will need  to  brake  less and, 
thus , accelerate  less.  Let the  vehicle coast 
wheneve r poss ible  -for  example  when you see 
that  the  next traffic  l ight  is red. 
Avoid  full  throttle 
Driving at  moderate  speeds  saves  fuel  and 
improves your  mileage. 
•  Try and  keep well below your car 's max imum 
speed . 
Accelerating  gently  reduces  fuel  consump
tion,  engine  wear,  and  does  not  disturb  the 
environment . 
Fuel consumption,  exhaust  emissions  and  en
g ine  no ise  increase  d isproportionately  at  high 
speeds.  If you dr ive at  approximately  three 
quarters  of top  speed,  fue l consumption  will 
be  reduced  by one  half.  Neve r dr ive faste r 
than  the  posted  speed  limit and  wea ther  con
d itions  permit. 
Reducing  unnecessary  idling 
Even when your  car is just  idling it burns  up 
fuel. 
•  Shut  the  engine  off when you are  not  dr iv ing 
the  vehicle.  • 
Do not  warm  up the  vehicle by letting  the 
engine  run  at  id le . 
T he  id ling  phase  is automatically  red uced for 
vehicles with the  Start -Stop -System . It  is effi
cient  to  switch  off the  engine  in vehicles with 
out  the  Start-Stop -System  when  stopp ed at 
railroad  crossings  and  long  red  lights.  Tu rning 
the  engine  off for jus t 30-40  seconds  saves 
more  fuel  than  is burned  by starting  the  en-
. . gme  again . 
It takes  a  long time  for  the  eng ine to  warm  up 
fully when  i t is running  at  idle. However, wear 
and  noxiou s emissions  are  espec ially high 
when  the  eng ine  is warm ing up . So you should 
drive away as  soon  as you start  the  engine  and 
avo id  running  at  high rpms  while the  engine  is 
still warming  up. 
W Note 
Do not  leave engine  idling  unattended  af
ter  start ing . If wa rning  lights  should  come 
on to  indicate  improper  operation,  they 
wo uld  go unheeded . Ex tended  idling  also 
produces  heat,  wh ich could  result  in ove r
heating  or other  damage  to  the  ve hicle or 
other  property . 
Regular  maintenance 
A badly  tuned  engine  unnecessarily  wastes  a 
lot  of fuel. 
•  Have your veh icle serviced  at  reg ular  in ter -
vals . 
By having your ve hicle regu la rly se rviced by an 
Audi dealer  he lps to  ensu re tha t  it  runs  p rop 
erly and  economically . The condition  of your 
vehicle not  only affects  its safety  and  ability to 
ho ld  its va lue,  it also  affects 
fuel  con sump
tion . 
Check  your  oil e ach time  you 
fill y our tank. 
The  amount  of o il used  is re lated  to  engine 
load and  speed. 
It  is normal  for the  oil consumption  of a new 
engine  to  reach  its  lowest  value  after  a certa in 
mileage  has  bee n driven .  ..,.  
Page 210 of 316

208  Trailer towing 
Trailer  towing 
Driving  with  a  trailer 
General  information 
Your  Audi  was designed  primarily  for passen
ger  transportation . 
If  you  plan  to  tow  a trailer,  p lease  remember 
that  the  additional  load  will  affect  durability, 
economy  and  performance . 
Trailer  towing  not  on ly places  more  stress  on 
the  vehicle,  it  also  calls  for  more  concentra
tion  from  the  driver. 
For  this  reason,  always  follow  the  operating 
and  driving  instructions  provided  and  use 
common  sense. 
@ Note 
If  you  are  going  to  tow  a trai ler,  you  must 
activate  the  trailer  operation mode 
c:::> page  208,  Operating instructions. 
Technical requirements 
Trailer  hitch 
Use a  weight-carrying  hitch  conforming  to  the 
gross  trailer  weight.  The  hitch  must  be  suita ble  for  your  vehicle  and  trailer and must  be 
mounted  securely on the  vehicle's  chassis  at  a 
technically  sound location . Use  only  a  trailer 
hitch  with a  removable  ball mount.  Always 
check  with  the  trailer  hitch  manufacturer to 
make  sure  that you  are  using the  cor rect 
hitch. 
Do  not use a bumper  hitch. 
The  hitch  must  be  installed  in such  a way  that 
it  does  not  interfere  with  the impact-absorb
ing  bumper  system.  No modifications  should 
be  made  to  the  vehicle  exhaust  and  brake  sys
tems . From  time to  time,  check  that  all hitch 
mounting  bolts  remain  securely  fastened. 
When  you are not  towing  a  trailer, remove  the 
trai ler  hitch  ball mount.  This  prevents  the 
hitch  from  causing damage  should  your vehi
cle  be struck  from  behind 
c:::> A. 
Trailer  brakes 
If your  trailer  is equipped  with  a brakin g  sys
tem,  check  to be  sure  that  it  conforms  to  all 
regulations. 
T he  trailer  hydraulic  brake  system must not be 
directly  connected  to  the vehicle's  hydraulic 
brake  system . 
Safety  chains 
Always  use  safety  chains  between  your  veh icle 
and  the  trailer. 
Trailer  lights 
Trailer lights must  meet  all  regulations.  Be 
sure  to  check  with  your  Audi  dealer  for  correct 
wiring,  switches  and  relays. 
Mirrors 
If you  are  unable to  see  the  traffic  behind  you 
using  the  regular  outside  mirrors,  then  you 
must install  extended  mirrors. It is important 
that  you 
always have  clear  v is ion  to  the  rear . 
A WARNING 
--
After removing  the trailer  hitch,  do  not 
store  it  in your  vehicle . In  case  of  sudden 
braking,  the  hitch  could  fly forward  and  in
jure  you or your  passengers. 
Operating  instructions 
Maximum  trailer  weight 
A  trailer  for  your  vehicle  is limited  to  a typical 
class  1 or  class 2  trailer. 
Trailer  load  distribution 
Be sure  the  load  in the  trailer  is  held securely 
in  place  to  prevent it  from  shift ing  forward, 
backward  or  sideways. 
Never allow a  passenger to ride  in a trailer 
c:::> A in Driving  instructions  on page 210. 
Engine  cooling  system 
Towing  a trailer  makes  the  engine  work  hard
er . It  is important  that  the  cooling  system 's 
performance  is up  to  the  additional  load.  
Page 220 of 316

218  Fuel supply  and  filling  your  fuel  tank 
-Blend  must  contain  not  more  than  15% 
MTBE. 
Seasonally  adjusted  gasoline 
Many  gasoline  grades  are  blended  to  perform 
espec ially  we ll for  winter  or  summer  driv ing. 
During  seasonal  change-over,  we  suggest  that 
you  fill  up  at  busy gas  stat ions where  the sea
sonal  adjustment  is  more  likely to  be made  in 
time. 
(CT) Note 
- Methanol  fuels  which  do not  meet  these 
requirements  may  cause corrosion and 
damage  to  plastic and  rubber  compo
nents  in the  fuel  system . 
- Do  not  use  fuels that  fai l to  meet  the 
specified  criteria  in this  chapter. 
- If yo u are  unable  to  determine  whether 
or  not  a  particular  fuel blend  meets  the 
specifications,  ask  your  service  station  or 
its  fuel  sup plier. 
- Do not  use  fuel  for  which  the  contents  cannot  be  identified. 
- Fuel  system  damage  and  performance 
problems  resulting  from  the  use  of fuels 
different  from  those  specified  are  not 
the  respons ibility  of  Audi  and  are  not 
covered  under  the  New Vehicle  or  the  Emission  Control  System  Warranties. 
- If you  experience  a  loss of  fuel  economy 
or  driveability  and  performance  prob l ems  due  to  the  use  of  one  of  these fuel 
blends,  we recommend  that  you  switch 
to  unblended  fuel. 
Gasoline additives 
A  major  concern  among  many  auto manufac 
turers  is  carbon  deposit  build- up caused  by 
the  type  of  gasoline  you  use. 
A lthough  gasoline  grades  differ  from  one 
manufacturer  to  another, they  have  certain 
things  in  common.  All gasoline  g rades  contain 
substances  that  can  cause  deposits  to  co llect 
on  vital  engine  parts,  such  as  fuel  injectors 
and  intake  valves.  Although  most  gasoline 
brands  include  additives  to  keep  engine  and  fuel 
systems  clean,  they  a re  not  equally  effec
tive . 
A udi  recommends  using  TOP TIER Detergent 
Gasoline.  For  more information  on TOP  TIER 
Detergent  Gasoline,  please  go  to  the  official 
website  (www.toptiergas.com). 
After  an extended  period of using  inadequate 
f uels,  carbon  deposit  build-ups  can  rob  yo ur 
engine  of  peak  performance. 
CD Note 
Damage  or  malf u nct ion  due  to  poor  fuel 
quality  is  not covered  by the  Aud i New  Ve
hicle  Limited  Warranty. 
Diesel  fuel 
Applies  to veh icles: w ith  diesel engine 
Always  use ULSD (Ultra  Low Su lfu r Diesel) 
No.  2.  The  U LSD  No.  2  meets  the  ASTM  D975. 
Diesel  fuel  with  concentrations  of  biodiese l 
higher  than  5  %  s uch as  Bl  1,  B2O or BlOO  are 
strictly  prohib ited. 
Serv ice  stat ion  fuel  pumps  are  labeled  with 
the  correct  fuel  information  for  easy  recogn i
t io n  by the  user. If  the  diesel  fuel  pump  is not 
labeled  ask the  station  operator  what  fue l is 
being  dispensed  before  filling  up your vehicle. 
ULSD No.  2  may not be  available  outside  the 
USA  and  Canada.  Be sure  to  check  before  trav
eling  to  other  countries. 
ULSD No.  2  can  become  thicker  in very  cold 
temperatu res,  and  this can  impair  the  en
gine's  start ing  and  running.  Depending  on the 
season,  gas  stat ions  provide  ULSD  No. 2 that 
flows  better  in cold  temperatures  so  that you 
can  continue  operating  your  vehicle  as  usua l. 
CD Note 
-Yo ur  vehicle's  diesel  engine  was  de
signed  soley  for  use  with  ULSD  No.  2. 
Therefore,  never  use  gasoline,  heating 
oil,  other  fuels  or  flow  improvers.  These 
conta in substances  that  will  severely 
damage  the  fuel  system  and  the  engine. 
II>  
Page 221 of 316

M N <( I.J "". rl I.O 
"' rl 
"' rl 
Such damage  will not  be covered  by your 
New Vehicle Limited Warranty . 
- If you p ut  any amount  of  incorrect  fue l in 
t h e fue l tank,  do not  start  the  engine  un
der  any circumstances.  Immediately  con
tact  the  nearest  author ized Audi dealer 
or authorized  Audi Service Facility for as
s istance.  These fuels  contain  substances 
that  can severely damage  the  fuel  sys
tem  and  the  engin e if the  engine  is start
ed. 
Fuel  tank 
Fuel filler  neck 
The fuel  filler  neck is located  on the  r ight  rear 
side  panel  behind the  fuel  f iller flap. 
If the  power loc king system  should  fail,  you 
can st ill open  the  flap  manually -for  detai led 
instructions  see ¢ 
page 221. 
You can find  the  fue l tank capacity o f you r ve 
hicle in 
¢ page 292. 
The  label  on  the  inside  of the  fuel  filler flap 
tells  you the  cor rec t f uel  for yo ur vehicle . For 
more  in formation  about  fuel  specificat ions, 
see 
¢ page 217 . 
Your veh icle  fuel  tank  has  an on board  refue l
ling vapor  recove ry system . T his feature  he lps 
to  p revent  fuel  vapo rs from  escaping  from  the 
tank  and  polluting  the  environment  whi le you 
refuel your ve hicle. In order  to  fill the  tank 
properly whi le protect ing the  e nv ironment, 
p lease  follow t his refueling  procedure  careful
ly . 
& WARNING 
Under no rma l operating  condi tions, neve r 
car ry add itiona l fuel  containe rs  in your car. 
G as can iste rs a nd other  c ontaine rs used  to 
t ran sport  fue l can  be  dange rous.  Such con
t ainers,  full or empty,  may  lea k and  co uld 
cause  a fi re  in a co llision . If you must 
transport  fue l to  use for yo ur lawn mower, 
snow blower, etc.,  be very ca refu l and  al
ways observe  local and  state  laws  regard
ing the  use,  transportat io n  and  storage  of 
Fu el suppl y and  filli ng  your  fuel  t ank  219 
such  fuel  containe rs . M ake certa in the  con
tainer  meets  industry  standa rds  (ANSI/ 
ASTM F852  -86). 
(D Note 
Neve r drive your vehicle until  the  fuel  tank 
i s completely  empty.  T he  irreg ular s upply 
of fue l can ca use  m isfir ing. Gasoline cou ld 
enter  t he exhaust  system  and  damage  the 
catalytic  converter . 
Refuelling 
Fig. 1 84 R ig ht  rea r ve hicle s ide : Open ing  t he  fuel  filler 
flap 
F ig . 185 Fu el f ille r fla p with  attac hed  fuel  cap 
When  act ivat ing the  centra l locking, the  fuel 
filler flap  is a utomatically  unlocked o r locked . 
Ref uel the  vehicle wi th t he  ignition  switched 
off. 
Taking the  fuel  cap off 
.,.  Press the  left  side of the  fuel f iller flap  to 
open  it ¢ 
fig. 184  -arrow -. 
.,.  Unsc rew fue l filler  cap counte r-clockw ise 
and  ha ng  it  on the  fue l filler flap ¢ 
fig. 185. 
.,. Check t he  label on t he  ins ide  of the f uel fill
er f lap t o dete rm ine  if the  veh icle mus t be 
fue led with gasoline  or diese l fuel.  ..,.  
Page 227 of 316

M N <( I.J ""'. rl I.O 
"' rl 
"' rl 
Checking  and  filling Engine  hood 
Releasing  the  engine  hood 
The engine  hood  is released  from  inside  the 
vehicle . 
Fig.  191 Dr iver  footwell:  release  leve r 
Fig. 192 Rocker  switch under the  hood 
Make sure  the  wiper  arms  are  not  raised  up 
from  the  w indshield.  Otherw ise  the  paint 
could  be  damaged. 
..  With  the  driver's  door  open , pull  the  lever 
under  the  instrument  panel  in the  direction 
of the  arrow 
c::> fig.  191. 
..  Raise  the  hood  slightly c::> .&. . 
.. Press  the  rocker  switch  under  the  hood  up
ward 
c::> fig.  192. This  releases  the  catch. 
..  Open  the  hood . 
A WARNING 
Hot engine  coo lant  can  burn  you. 
- To reduce  the  risk of  being  burned,  never 
open  the  hood  if you  see  or  hear  steam 
or  coolant  escaping  from  the  engine 
compartment . Wait  until  no  steam  or 
coolant  can  be  seen  or  heard  before  care
fully  opening  the  hood. 
Checkin g and  fillin g 225 
Working  in the  engine  compartment 
Be especially  careful whenever  you work  in 
the  engine  compartment. 
Wh ene ve r y ou must  p erform  an y  wor k in  the 
en gine  com pa rtm ent , for  e xample  checking 
a nd filling  diff ere nt  fluids,  th ere  is a  risk of 
inju ry, burn s and accid ent s.  To  pr eve nt  per
so nal  injury alwa ys  observ e the  foll owing 
WARNING S. The engin e compartm ent  of  any 
v e hicle i s a h az a rdou s area 
c::> ,& . 
h WARNING 
To help  avoid  injury,  before  yo u check  any 
thing  under  the  hood: 
- Turn  off the  engine. 
- Sw itch  off  the  ignition . 
- Apply the  parki ng  brake. 
- Move selector  leve r to  P (Park) . 
- Always  let  the engine  cool  down . Hot 
components  w ill burn  skin  on  contact . 
- To reduce  the  risk of  being  burned,  never 
open  the  hood  if you  see  or  hear  steam 
or  coo lant  escaping  from  the  engine 
compa rtment.  Wait  unt il no  steam  or 
coolant  can  be  seen  or  heard  before  care
fu lly opening  the  hood. 
- Keep  ch ildren  away  from  the  engine  com
pa rtment. 
- Never  sp ill fluids  on  hot  engine  compo
nents . They  can  cause  a fire  . 
- Never  touch  the  rad iator  fan.  The  auxili
ary  electric  fan  is temperat ure  controlled 
and  can  sw itch  on  suddenly  . 
- Never  open  the  coolant  reservoir  cap 
when  the  engine  is still  warm . The  cool
a nt  system  is  p ressu rized  and  hot  cool
a nt  cou ld  spray  o ut. 
- Protect  your  face,  hands  and  arm  from 
steam  or  hot  engine  coolant  by plac ing  a 
thick  rag  ove r the  cap  when  you  open  the 
coo lant  rese rvoir. 
- Do not  remove  the  engine  cover  under 
any  circumstances.  This  inc reases  the 
ris k of  burns. 
- If  work  on  the  fue l system  o r the  elec tri -
cal  system  is necessary: 
II>-