check engine AUDI A8 2016 Owner's Guide
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Page 232 of 302

Checking  and  Filling 
Brake  fluid 
Checking brake  fluid  level 
The brake  fluid  level  can be checked with  a quick 
glance. 
Fig. 202 Eng ine  compartment:  cove r o n  th e  brake  flu id 
r eservoi r 
Before  you  check  anything  in the  engine  compartÂ
ment, 
always  re ad  a nd  hee d all  W ARNING S 
¢ A in  Working  in  the  engine  compartment  on 
page  220. 
.,  Read  the  brake  fluid  level  from  the  brake  fluid 
reservoir 
<=> fig . 202,  ¢page  222. The  brake  flu Â
id  level  must  be  between  the  "MIN" and "MAX" 
mark ings. 
The  location  of  the  brake  fluid  reservoir  can  be  seen  in the  engine  compartment  illustration 
¢ page  222. 
The  fluid  level  may  drop slightly after  some  time 
due  to  the  automatic  adjustment  of  the  brake 
pads . This  is not  cause  for  alarm . 
If  the  brake  fluid  level  falls 
considerably below 
the  ' 'MIN" mark,  the  brake  warning/indicator 
light 
1111 (U.S.  models)/ . (Canadian  models) 
will come  on¢ 
page  14 . Do not  continue  to  operÂ
ate  the  vehicle . The  complete  brake  system 
should  be  thoroughly  checked  by an  authorized 
Aud i dealer  or  other  q ualified  facili ty and  the 
cause  corrected. 
If the  brake  f luid  level  is too 
low,  the  brake  warning/indicator  light  will  i llumi Â
nate.  Contact  an  authorized  Audi dealer 
immediÂ
at ely. 
230 
Changing  brake  fluid 
Have the  brake  fluid  changed  by an experienced 
technician . 
Brake  fluid  absorbs  moisture  from  the  air. If the 
water  content  in the  brake  fluid  is too  high,  cor rosion  in the  brake  system  may  result  after  apeÂ
riod  of  time . The  boiling  po int  of the  brake  fluid 
will a lso  decrease  considerably  and  decrease 
braking  performance. 
Therefore , the  brake  fluid  must  be  changed 
eve ry 
two  y ears . Always  use  new  brake  fluid  which  conÂ
forms  to  Feder-al Motor  Vehicle  Standard  "FMVSS  116  DO T 4". 
The  brake  fluid  reservoir  can  be  difficult  to  reach , 
therefore,  we  recommend  that  you  have  the  brake  fluid  changed  by your  author ized 
Audi 
d ea ler . Your  dealer  has  the  correct  tools,  the 
right  brake  fluid  and  the  know -how  to  do  this  for 
you. 
A WARNING 
- Brake fluid  is  po isonous.  It  must  be  stored 
only  in the  closed  original  container  out  of 
the  reach  of children! 
- Brake fai lure  can  result  from  o ld  or  inapproÂ
priate  brake  fluid . Observe  these  precauÂ
tions: 
- Use only  brake  fluid  that  meets  SAE speci ficat ion 
J 1703  and  conforms  to  Federal 
Motor  Ve hicle  Standard  116.  Always check 
with  your  authorized  Audi  dealer  to  make 
sure  you  are  using  the  correct  brake  f luid . 
The  correct  type  of  brake  f luid  is also  indiÂ
cated  on  the  brake  fluid  reservoir. 
- The  brake  fluid  must  be  new . Heavy use  of 
the  brakes  can  cause  a  vapor  lock  if the 
brake  fluid  is  left  in the  system  too  long . 
This  can  seriously  affect  the  efficiency  of 
the  brakes  as  well  as your  safety.  This 
could  result  in an  accident. 
(D Note 
Brake  fluid  will damage  the  paint  of your  vehi-
cle . 
lilJJ,  
Page 233 of 302

@ For the  sake  of  the  environment 
Because  of  the  problem  of  proper  disposal of 
brake  fluid  as  we ll as  the  special  toots  reÂ
quired  and  the  necessary  expertise,  we  recÂ
ommend  that  you  have  the  brake fluid 
changed  by your  authorized  Audi  dealer . 
Battery 
General  information 
Under normal operating  conditions,  the  battery 
in your  Audi  does  not  need  any  maint enance. 
With 
high outside  temperatures  or  long  daily 
drives  we  recommend  tha t you  have  the  electroÂ
lyte  level  checked  by a  service  facility.  The  elecÂ
trolyte  level should  also  be  checked  each  time 
the  battery  is charged  ¢ 
page  233. 
Have the  battery  checked  when  you  take  your  veÂ
hicle  in for  serv ice.  You are  well  advised  to  reÂ
place  a  battery  that  is older  than  5 years . 
With  certain  types  of airbag  deployment,  the  batte ry  is  disconnected  from  the  vehicle  electriÂ
cal  system  for  safety  reasons¢ 
& in Repair,  care 
and  disposal  of  the  airbags  on page  159 . 
Disconnecting  the  battery  terminals 
Some  vehicle  functions  (power window  regu laÂ
tors,  for example)  are  lost  if the  battery  te rmi Â
nals  are  disconnected.  These  functions  have  to  be 
relearned  after  the  battery  terminals  are  conÂ
nected  again.  To prevent  th is,  the  battery  should 
only  be  disconnected  from the vehicle  e lectr ica l 
system  when  abso lutely  necessary  for repairs. 
Vehicles  not  driven  for  long  periods 
If  you  do  not  drive  your  vehicle  over  a  period  of 
several  days  or weeks,  electrical  components  are 
gradually  cut  back  or  sw itched  off.  This  reduces 
ene rgy consumption  and  ma inta ins  starting  caÂ
pability  over  a  longer  period ¢ 
page  195. Some 
of  the  convenience  functions may  not operate, 
such  as  the  interior  lights or the  power  seat adÂ
justment.  The convenience  funct ions  will  be 
ava ilable  again  when  you  switch  on  the  ignition 
and  start  the  engine. 
Checking  and Filling 
Winter  operation 
During  the  winter months,  battery capacity  tends 
to  decrease  as  temperatures  drop . This  is beÂ
cause  more  power  is also  consumed  while  startÂ
ing,  and  the  headlights,  rear  window  defogger, 
etc.,  are  used  more  often. 
Avo id  unnecessary  power  consumption,  particuÂ
larly  in  city traffic  or  when traveling  only  short 
distances . Let  your  authorized  Audi  dealer  check 
the  capacity  of the  vehicle  battery  before  winter 
sets  in  ¢ 
page  233. A well  charged  battery will 
not  only  prevent starting  problems  when  the 
weather  is  cold,  but  will also  last  longer . 
(D Tips 
If  your  vehicle  is  left  standing  for  several 
weeks  at extremely  low temperatures,  the  veÂ
hicle  battery  should  be  removed and  stored 
where  it  w ill not  freeze . This  will  prevent  it 
from  be ing damaged  and  having  to  be reÂ
placed. 
Working  on  the  battery 
Be  especially  careful  when  working  on  or near 
the  battery. 
The  battery  is  located  in the luggage  compartÂ
ment  under  the  floor . Before  you  check  anything 
in the  luggage  compartment, 
read and heed all 
WARNINGS ¢ 
&-
Always  heed  the safety warnings, when  working 
on  the  vehicle  battery  or the  veh icle  electrical 
system  to  prevent  injury. 
The following  WARNINGS  are  very important 
when  working  on the  battery: 
Always  heed the  following  WARNING  SYM· 
BOLS  and safety  precautions  when working  on 
the  battery. 
® 
Always wear  eye protection. 
~ 
Battery acid contains  sulfuric acid. Al-
ways wear gloves and  eye protection. 
231  
Page 234 of 302

Check ing  and  F illing 
@ 
No 
- spark s 
- fl ame s 
- smokin g. 
~ 
Wh en a  b att ery  is  ch arg ed , it  produc es 
h yd ro ge n ga s which  i s explosive and 
could  cau se per sonal  injury. 
® 
Always  keep  the  b atter y well  out  of 
r each  of  child ren. 
A WARNING 
Whenever  work ing  on  the  battery  or  on  the 
elect rical  system,  there  is the  risk of  injury, 
accident  and 
even fire.  Read  and  heed  the  folÂ
lowing  WARN INGS : 
- Always wear  eye  protection.  Do not  let  batÂ
te ry acid  or  any  lead  particles  get  on  your 
sk in or  cloth ing . Sh ield  your  eyes.  Explosive 
gases  can  cause  blindness  or  other  injury . 
- Battery  acid  con tains  su lfu ric acid.  Sulfur ic 
acid  can  cause  blindness  and  severe  b urns. 
- Always wear  gloves  and  eye  protection.  Do 
no t tilt  the  battery  because  acid  could  leak 
out  of the  ventilat ion  open ings . 
- If  you  get  battery  ac id  in your  eyes  or  on 
your  skin,  immediately  rinse  with  cold  waÂ
ter  for  several  minutes  and  get  medical  at tention . 
- If  you  should  ingest  any  battery  acid,  seek 
medical  attention  immediately . 
- Do not  expose  the  battery  to  an  open  flame, 
electric  sparks  or  an  open  light . 
- Do not  smoke. 
- Do not  interchange  the  positive  and  nega-
t ive cables. 
- When  working  on  the  battery,  be  sure  not  to 
short-circuit  the  terminals  with  tools  or  oth Â
er  metal  objects.  Th is wou ld  cause  the  batÂ
tery  to  heat  up 
very quickly,  which  could 
lead  to  damage  or  explosion  and  personal 
injury . 
- When  a  battery  is charged,  it  produces  hy Â
drogen  gas  which  is  explosive  and  could 
ca use  personal  injury. 
- Always  keep  the  battery  well  out  of  the  reach  of  ch ildre n. 
232 
-
-Before  work  is done  on  the  electrical  sysÂ
tem,  disconnect  the  negative  gro und  cable. 
- Before  performing  any  work  on  the  e lectriÂ
cal  system,  switch  off  the  engine  and  ign iÂ
tion  as  well  as  any  electrical  equ ipment . The 
negat ive cab le  on  the  battery  must  be  disÂ
connected . If  you  are  just  going  to  replace  a 
light  bulb,  then  it  is enough  to  switch  off 
the  lights. 
- Before  d isconnecting  the  battery,  switch  off 
the  anti-theft  alarm  system!  Otherwise  you 
will  set  off  the  alarm. 
- When  disconnecting  the  battery,  first  disÂ
connect  the  negative  cab le  and  then  the 
positive  cable. 
- Before  reconnect ing  the  battery,  make  sure 
all  electr ica l consume rs a re switched  off . 
Reconnect  the  positive  cable  first  and  then 
the  negative  cable . Never  in terch ange  t he 
cables  -this  could  sta rt  a fire! 
- Never  cha rge  a frozen  or  a thawed-out  batÂ
tery . It  cou ld  explode ! If  a  ba ttery  has  froÂ
zen,  then  it  must  be  replaced.  A discharged 
battery  can  freeze  over  at  32  ° F (0 °C). 
- Make sure  the 
vent hose  is always  attached 
to  the  opening  on  the  side  of  the  battery . 
- Never  use  batter ies  which  are  damaged. 
There  is the  danger  of  an  exp losion!  Always 
replace  a  damaged  battery . 
A WARNING 
Califo rnia  Proposition  65  Warning : 
- Batte ry posts,  te rm inals  and  related  accesÂ
sories  contain  lead  and  lead  compounds, 
chemicals  known  to  the  State  o f Cali fornia 
to  cause  cancer  and  reproductive  problems. 
Wash  hands  after  handling. 
(D Note 
- Do not  disconnect  the  vehicle  battery  when 
the  ignition  is on  or  when  the  engine  is runÂ
ning,  otherwise,  you  w ill damage  electronic 
components  in the  electrical  system. 
- If your  veh icle  is  go ing  to  stand  for  a  long 
period  of  time  w ithout  being  driven,  protect 
the  battery  from  "freezing",  otherwise  it  ..,.  
Page 235 of 302

will  be  damaged and will then  have  to  be  reÂ
placed. 
Battery  charging 
Starting  the engine  requires a  well charged  batÂ
tery. 
Fig.  203 Engine co mpa rtment:  connectors  fo r a c harger 
and  jump  start  cables 
Always  read  and heed  all  WARNINGS below 
~ &. and 
¢ A in  Working on the  battery  on 
page  232. 
•  Switch  off the  ignition  and  all  electrical  conÂ
sumers . 
•  Make  sure  the  area  is well  ventilated  when  you 
charge  the  battery. 
•  Open  the  engine  hood 
~ page  220. 
• Remove  the  cover (D by pressing  on  the  arrow 
¢ fig . 203. 
•  Open  the  cover @on  the  positive  terminal. 
•  Connect  the  charger  connectors  according  to 
the  instructions  to  the 
jump  start  bolts. (Bolts 
under  the  red  cover=  "positive" , Bolts  with  hex 
head 
= "negat ive"). 
•  Only now  plug  the  mains  lead for  the  charging 
equipment  into the  wall  outlet  and  turn  it on 
¢&,, . 
• Make  sure the charging  rate is not over 
30  amps/14.8  Volt. 
•  When  the  battery  is fully  charged:  Turn the 
charging  equipment  off  and  remove  the  mains 
lead  from  the  wall  outlet . 
•  Now  remove  the  clamps  for  the  charging  equip-
ment. 
~ •  Close  the  red  cover  on  the  positive  pole. 0 
~ • Close the  hood~ page 221. 
rl I.Cl U"I 
rl I.Cl rl 
Checking  and  Filling 
A discharged  battery  can freeze at  temperatures 
of only  32  F
0 (0  °C). Allow a  frozen  battery  to 
thaw  completely  before  attempting  to  charge  it 
¢ &. However , we  recommend  not  using  a 
thawed  battery  again  because  the  battery  casing  can  be  cracked  due  to  ice formation  and  can  leak 
battery  acid. 
Battery  charging  (Maximum  charging  rate  of 
30  amps/14.8  Volt) 
When  charging  at low voltages  (e.g . w ith  a trickÂ
le charger), 
the  battery  cables  do  not  have  to  be 
disconnected  first.  The  battery caps  should 
not 
be opened  when  charging  a  battery. 
It  is not  necessary  to  remove  the  battery  from 
the  luggage  compartment,  and  it  is also  not  necÂ
essary  to  disconnect  the  cables . 
Fast charging  the battery  (charging  rate 
above  14.8 Volts) 
For technical  reasons  do  not  use  a  battery  chargÂ
er that  uses  voltage  greater  than  14.8 Volts  to 
charge  your  vehicle's  battery. 
.&_ WARNING 
Charging a  battery  can  be  dangerous. 
- Always follow  the operating  instructions 
provided  by  the  battery charger manufacturÂ
e r  when  charging  your  battery. 
- Never  charge a frozen  battery.  It  may exÂ
p lode  because  of  gas  trapped  in the  ice. AlÂ
low  a frozen  battery to  thaw  out  first. 
- Do not  reuse  batteries  which  were  frozen. 
The  battery  housing  may  have cracked and 
weakened  when  the  battery  froze. 
- Charge  the  battery  in a  well  ventilated  area. 
Keep  away from  open flame  or  electrical 
spark.  Do not  smoke.  Hydrogen  gas  generatÂ
ed  by the  battery  is  explosive. 
- To  reduce  the  danger  of explosion,  never 
connect  or  disconnect  charger  cables  while 
the  charger  is operating. 
- Fast  charging  a  battery  is dangerous  and 
should  only be  attempted  by a  competent 
technician  with  the  proper  equipment. 
- Battery  acid  that  may  spill  during  charging 
should  be  washed  off  with  a so lution  of 
233  
Page 236 of 302

Check ing  and  F illing 
warm  water  and  baking  soda  to  neutralize 
the  acid. 
CD Note 
Never  use  a fast  charger  as  a  booster  to start 
the  engine . This  will serious ly damage  sensiÂ
tive  electronic  components,  such  as  control 
units,  relays,  radio, etc.,  as  well  as  the  battery 
charger. 
Battery  replacement 
T he new  battery  must  have  the same  specificaÂ
t ions and  dimensions  as  the original  equipmen t 
bat tery. 
Int elli g ent  en ergy  managem ent  in your  vehicle  is 
responsible  for  distributing  the  electrical  energy 
throughout  your  vehicle 
r=> page  195. The  intelliÂ
gent  energy  management  system  will  keep  the 
engine  battery  charged  better  than  veh icles  w ithÂ
out  this  system . To make  sure  the  addit ional 
e lectrical  energy  is  avai lab le  once  again  after  you 
have  changed  the  battery, we recommend  that 
you  install  batteries  of the  same  type  and  manu facture  on ly (the  same  as  those installed  at  the 
time  your  vehicle  was  delivered).  Specifications 
are  listed  on  the  battery  housing.  Your  authorÂ
i z ed  dealer  must  code  the  battery  in the  energy 
management  system  to  enable  you to  use  the  enÂ
ergy  management  functions  correctly  after  re Â
placing  the  battery . 
The  new  battery  must  have  the  same  capacity, 
voltage  (12  volts) , amperage,  construction  and 
plug  sealing . 
When  installing  the  battery,  make  sure  the  igniÂ
tion  and  all  electrical  consumers  are  sw itched 
off. 
CD Note 
- Make  sure  the  ventilation  hose  on  the  s ide 
of the  battery  is connected,  otherw ise 
fumes  or  battery  ac id can  leak  out. 
- Vehicles  with  the  Start-Stop-System*  are  equipped  with  a  special  cycle-proof  AGM battery . Installing  a  d ifferent  type  of  batÂ
tery  can  cause  problems  in the  vehicle  elec -
234 
trical  system. When  replacing  the  vehicle 
battery,  always  install  one  with  the  same 
specifications  as  the  original  battery . 
- Battery  mounts  and  clamps  m ust  always  be 
secured  correctly. 
- Read  and  follow  the  warnings  under 
¢ page  231,  Working  on  the  battery before 
performing  any  work  on  the  battery . 
@ For the  sake of  the  environment 
Because  of the  p roblem  of  proper  disposal  of 
a  battery,  we  recommend  your  authorized 
A udi  dealer  change  the  battery  for you . BatÂ
teries  contain  sulfur ic acid  and  lead  and  must 
a lways  be  disposed  of  properly  in  compliance 
with  all  environmental  regulations . Disposing 
of veh icle  batteries  improperly  is very  dangerÂ
ous  to the  environment . 
Windshield  washer 
system 
Fig.  204 En gin e  compa rt ment:  washer  fluid  rese rvoir  cap 
The w indshield  washer  fluid  reservo ir Q conta ins 
the  cleaning  solution  for  the  w indshield  and  the 
headlight  washe r system ¢ 
fig. 204, ¢ page 222. 
The  reservoir  capacity  is found  in 
r=> page  2 78 . 
To reduce  the  risk  of  lime  scale  depos its  on  the 
spray  nozzles,  use clean  water  with  low  amounts 
of  calcium.  Always  add  w indow  cleaner  to the  waÂ
ter . When  the  outside  temperat ures  are  cold , an 
anti-freez ing  agent  shou ld be  added  to  the  water 
so  that  it  does  not  freeze.  ..,.  
Page 261 of 302

Replacing  wheels 
Before  changing  a wheel 
Observe the  following  precautions  for your  own 
and your  passenger's  safety  when changing  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,  beh ind the 
guardrail) ¢.,&.  . 
.,.  Engage  the 
parking  brake to  prevent  your  vehiÂ
cle  from  rolling  unintentionally ¢.,&. . 
..  Move 
selector  lever to  position  P ¢ .,&. . 
1> lfyou  are  towing  a trailer,  unhitch  the  trailer 
from  your  vehicle. 
.,.  Take  the 
jack and  the spare tire out  of  the  lugÂ
gage  compartment, 
¢page  257. 
..&, WARNING 
You or  your  passengers  could be  injured  wh ile 
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  flashers  on  and use other  warnÂ
ing  devices  to  alert  other  motorists. 
- Make  sure that  passengers  wa it in  a safe 
place  away  from the  vehicle  and well away 
from  the road  and  traffic. 
- T o  help  prevent  the  vehicle  from  moving 
sudden ly and  possibly  slipping  off the  jack, 
always  fully set  the  parking  brake  and  block 
the  wheel  diagonally  opposite  the  wheel beÂ
ing  changed.  When one  front  wheel  is lifted 
off  the  ground,  plac ing  the  Automatic 
Transmission  in  "P" (Park)  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 . 
- Always  store  the  vehicle  tool  k it,  the  jack 
and  the  replaced  tire  in the  luggage comÂ
partment ¢ 
page 135. 
Emergency  assistance 
{!) Tips 
Before  changing  the  wheel,  you  must activate 
the  jacking  mode,  so  that  the  automat ic conÂ
tro ls for  the  Adaptive  Air Suspension  do  not 
make  it  more  difficult  to  lift the  vehicle  with 
the  jack ¢ 
page  261 . 
Changing  a wheel 
When you  change  a wheel , follow  the  sequence 
described  below  step-by-s tep and  in  exactly  tha t 
order . 
l. Activate  the  vehicle  jack mode  ¢ page  261 . 
2.  Remove  the decorative  wheel cover*. For 
more  details  see  also¢ 
page  260,  Decora Â
tive  wheel  covers 
or¢ page  260,  Wheels 
with  wheel  bolt  caps  . 
3.  Loosen  the wheel bolts¢ page 260. 
4.  Locate  the  proper  mounting  point  for  the 
jack  and align  the jack  below  that  point 
¢ page  261 or¢ page  262. 
5. Raise the  car  with  the  jack¢ page  261 or 
¢page  262. 
6.  Remove  the wheel  with  the  flat  tire and  then 
install 
the  spare ¢ page  263. 
7.  Tighten  all  wheel  bolts  lightly . 
8. 
Lower the  vehicle  with  the  jack . 
9.  Use  the  wheel  bolt  wrench  and 
firmly tighten 
all wheel  bolts<=> 
page  260. 
10. Replace  the  decorative wheel  cover*. 
11.  Deactivate  the  vehicle jack mode  in  the  MMI : 
I CAR! function  button > Car systems contro l 
button 
> Servicing & checks > Air  susp.:  jack 
mode > Off. 
The  vehicle  jack  mode  switches  off  automatically 
at  speeds  above  10  km/h . 
..&, WARNING 
Always  read and  follow  all  WARNINGS and  inÂ
formation 
¢ .&. in AB:  Raising  the  vehicle on 
page  262 
and  ¢ page  264. 
259  
Page 273 of 302

Emergency  situations 
General 
This chapter  is intended  for  trained  emergency 
crews  and working  personnel  who  have the  necÂ
essary tools  and  equipment  to  perform  these 
ope rations. 
Starting  by  pushing  or 
towing 
(D Note 
Veh icles  with  an  automatic  transmission  canÂ
not  be started  by pushing  or  towing. 
Starting  with  jumper 
cables 
If  necessary,  the  engine  can  be started  by conÂ
necting  it  to  the  battery  of  another  vehicle . 
If the  engine  shou ld  fail  to start  because  of a  dis Â
charged  or weak  battery,  the  battery  can  be  conÂ
nected  to  the  battery  of 
another vehicle,  using a 
pair of jumpe r cables to  start  the  engine. 
Jumper  cables 
Use only jumper  cables  of suffic iently  large cross 
section 
to  carry  the  starter  current  safely.  Refer 
to  the  manufacturer's  specifications. 
Use only jumper  cables  with 
insulated term inal 
clamps  which  are  dis tinct ly marked : 
plus(+)  cable in  most  cases  colored re d 
minus( -) cable 
in  most  cases  colored blac k. 
A WARNING 
Batteries  contain  electricity,  acid,  and  gas. 
Any of these  can  cause  very serious  or  fatal  inÂ
jury.  Follow  the  instructions below  for  safe 
handling  of your  vehicle's  battery. 
- Always shield  your  eyes  and  avo id  leaning 
over  the  battery whenever  poss ible. 
- A discharged  battery  can  freeze  at  temperaÂ
tures  just  below  32  °F (0 °C) . Before  conÂ
necting  a  jumper cable,  you  must  thaw the 
Emergency  situations 
frozen  battery  completely,  otherwise  it 
could  explode . 
- Do  not  allow  battery acid  to  contact  eyes  or 
skin.  Flush  any  contacted  area  with  water  immediately. 
- Improper  use  of a  booster  battery  to  start  a 
vehicle  may  cause  an  exp losion. 
- Vehicle  batteries  generate  exp losive  gases. 
Keep  sparks,  flame  and  lighted  cigarettes 
away  from  batteries. 
- Do not  try  to  jump  start  any  vehicle  with  a 
low acid  level  in the  battery . 
- The  vo ltage  of the  booster  battery  must  also 
have  a  12-Volt  rating.  The  capacity  (Ah) of 
the  booster  battery  should  not  be  lower 
than  that  of  the  discharged  battery. Use of 
batter ies  of  different  voltage  or  substantialÂ
ly different  "Ah" rating  may cause  an  exp loÂ
sion  and  personal  injury . 
- Never  charge  a frozen  battery.  Gas trapped 
in  the  ice  may  cause  an  explosion. 
- Never  charge  or  use  a  battery  that  has been 
frozen . The  battery  case  may  have  be  weakÂ
ened . 
- Use of  batter ies  of  different  voltage  or  sub Â
stantially  different capacity (Ah) rating  may 
cause  an  exp losion  and  injury. The  capac ity 
(Ah) of the  booster battery  should  not  be 
lowe r than  that  of the  discharged  battery. 
- Before  you check  anything in  the  eng ine 
compartment,  always read and  heed  all 
WARNINGS 
r::!)page  220. 
(D Note 
-Applying  a  higher  voltage  booster  battery 
will  cause  expensive  damage  to sensitive 
electronic  components,  such as  control 
units,  relays,  radio, etc. 
- Th ere  must  be  no electrical  contact between 
the  vehicles  as otherwise  current  could  alÂ
ready  start  to  flow  as soon  as  the  positive 
(+) terminals  are  connected. 
(D Tips 
- The  discharged  battery must  be  properly 
connected  to the  vehicle's  e lectrica l system.  ..,. 
271  
Page 274 of 302

Emergency situations 
When jump  starting  or  charging  the  batÂ
tery,  never  connect  the  negative  ground  caÂ
ble  to  the  battery  negative  post  because the 
battery  manager  system  must  be  able  to  deÂ
tect  the  battery's  state  of charge.  Always 
connect  the  negative ground  cable  to  the 
negative  ground  post  of  the battery  managÂ
er  contro l unit. 
Use  of  jumper  cables 
Make sure  to  connect the jumper  cable  clamps  in 
exactly  the  order described  below! 
F ig . 230 Engine  compar tment: connectors  for  jump start 
cables  and cha rger 
F ig.  231 Jump  starti ng wit h  the  battery  of  another  veh icle: 
@ -boos ter battery, @-disc harged  vehicle  battery 
The procedure  described  be low for  connecting 
jumper  cables  is  intended  to  provide  a jump  start  for  your  vehicle. 
Vehicle  with discharged  battery: 
• Turn off lights  and  accessories,  move  leve r of 
automatic  transmission  to  N (Neutral)  or  P 
(Park)  and  set  parking  brake. 
Connect POSITIVE (+) to  POSITIVE (+) ( red) 
•  Open  the  red  cover  on  the  positive  term inal 
¢ fig.  230. 
272 
1. Connect  one  end  of the  red  positive cable  on 
the 
jump  start bolt 9 fig.  231 (D (bolt  under 
the  red  cover=  "positive")  of the  veh icle  to  be 
started @. 
2.  Connect  the other  end  to  the  positive  termi-
nal @ of the  booster  battery @. 
Connect  NEGATIVE (- )  to  NEGATIVE(-) 
(black) 
3.  Connect  one  end  of  the  black  negative  cable 
to  the  negative  term inal @ of the  booster 
battery @. 
4.  Connect  the  other  end  to  the 
jump  start  pin 
@ (bolts  with  hex  head  bolt= "negative")  of 
the  vehicle  to be  started ®· 
Starting  the  engine 
• Start  the  eng ine  of  the  vehicle  with  the  booster 
battery @. Run  the  eng ine  at  a  moderate 
speed. 
•  Sta rt engine  w ith  discharged  vehicle  ba ttery @ 
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. 
•  With  engine  running,  remove jumper  cables 
from  both  vehicles  in the  exact 
reverse order. 
•  Close  the red  cover  on  the  positive  terminal. 
The  battery  is vented  to  the  outside  to  prevent 
gases  from  entering  the  vehicle  interior . Make 
sure  that  the  jumper  clamps  are well  connected 
with  their  metal  parts  in full  contact  with  the  battery  terminals. 
&_ WARNING 
To avoid  ser ious  personal  injury  and  damage 
to  the  vehicle,  heed  all warnings  and  instrucÂ
tions  of  the  jumper cable  manufacturer.  If  in 
doubt,  call  for  road  service. 
- Jumper  cables  must  be  long  enough so  that 
the  vehicles  do  not  touch . 
- When  connecting  jumper  cables,  make sure 
that  they  cannot  get caug ht in any  moving 
parts  in  the engine  compartment. 
- Before  you check  anything  in the  engine 
compartment,  always  read and heed  all 
WARNINGS 
¢ page  220.  
Page 275 of 302

(D Note 
Im pro per  hook-u p of jum per  cables  can  ru in 
the  gene ra tor. 
- Always  connect  P OSITI VE( +) to  POS ITI VE 
( + ),  and  NEGATIVE( -) to  NEGATIVE( -) 
ground  post  of t he  battery  manager  contro l 
u nit . 
- Check that  a ll sc rew  p lugs  on  the  battery 
ce lls  a re  sc rewed  in firmly . If  not,  t igh ten 
pl ugs  p rio r to  connecting  clamp  on  negative 
batte ry te rminal. 
- Please  note  t hat  the  procedure  fo r con nectÂ
i ng  a  jumper  cab le  as  desc ribe d above  apÂ
p lies  specifica lly to  the  case  of yo ur vehicle 
being  jump  s tarte d. W hen  you  are  giv ing  a 
ju mp  s ta rt  to  an othe r vehicl e, do 
not conÂ
n ect  t he  nega tive (- )  ca b le t o t he  nega tive 
(-)  t ermin al  on the  di scharged  battery @ 
c> fig . 23 1. Instead,  securely  connec t the 
negative (-) cable  to  either  a  solid  metal 
com ponent  that  is f irm ly bolted  t o the  e nÂ
gine  block  o r to  t he  engine  bloc k itsel f. If 
the  batt ery that  is  be ing  c ha rge d  d oes  not 
vent  to  the  outs ide,  escap ing  batte ry gas 
could  ignite  and  e xplode! 
Towing  with  a  tow  truck 
General  hints 
Your Audi require s speci al handling  f or  towing. 
Th e follow ing  informat ion  is  to be  used  by  comÂ
mercia l tow  tr uck o pera tors  who  know  how  to  opÂ
e rat e the ir equip men t sa fely. 
- Never tow  your Audi.  Towing  will  cause damÂ
age to the  engine  and transmission . 
- Never wrap  the  safety  chains or winch cables 
around  the  brake  lines. 
- To prevent  unnecessary damage,  your Audi 
must  be transported  with  a flat  bed truck. 
- To load the  vehicle on to the  flat  bed,  use the 
towing  loop found  in the  vehicle tools  and atÂ
tach to  the  front  or rear anchorage 
¢page273 and ¢pag e 274 . 
Emergency  situations 
A WARNING 
-A ve hicle  being  towe d is  not  safe  for  passen-
ge rs.  Neve r allow  a nyo ne  to  ride  in  a vehicle 
b eing  towed,  for  any  reason. 
Front  towing  loop 
Only install  the front  towing  loop  when  it  is 
needed . 
Fig. 232 Front  bumper:  cover 
Fig.  233 Front  bumper:  screwing  in  th e  towing  loo p 
The  towing  loo p fits  in to the  thre aded  hole  locatÂ
ed  o n the  r ig  ht  side  o f the  fron t bumper  a nd covÂ
ered  by a small  cover  when  not  in  use. 
"  Re move  the  towing  loo p from  the  vehi cle  too l 
ki t. 
" Press  inward  s tron gly on  the  up per  left  si de  of 
the  cap  to  remove  it from  the  bum per 
¢ fig . 232. 
" Screw  the  towing  loop  tightly  in the  threaded 
hole  as far  as  it  will go  and  tighten it  with  the 
wheel  wrench 
<=> fig . 233. 
Remove  the  towing  loop  when  you  are  done  using 
it  and  place  it  back  in the  ve hicle  too l kit.  Insta ll 
the  cover  in the  bumper . Always  keep  the  towing 
loop  in the  vehicle .  ..,. 
273  
Page 277 of 302

eye. For  technica l reasons,  the  pres sure  in the 
suspension  st ruts  may  change  during  the 
t ra nspo rt  a nd  this  will adverse ly affect  vehicle 
handling. 
Raising  the  vehicle 
Lifting  with  workshop  hoist  and  with  floor 
jack 
T he  vehicle  may  only  be  lifted  at the  lifting 
poin ts  illus trated . 
Fig . 237  Front  lift ing  point 
F ig. 238  Rear lift ing po int 
.,.  Read  and  heed  WARNING¢&_. 
...  Activate  the  vehicle  jack  mode  in the  MMI: 
I CAR I funct io n  button> Car system s control 
button  > 
Servicing & checks > Air susp .: jack 
mode > On . 
... Loc ate lift ing  po ints ¢fig.  237 and ¢ fig.  23 8  . 
.,.  Adjus t lifting  arms  of wo rkshop  hoist  or floo r 
jack  to  matc h ve hicle  lifting  points . 
...  Inse rt  a  ru bber  pad  between  t he f loor  jack/ 
workshop  hoist  and  the  lifting  points. 
T h e vehicle  jack  mode  m ust  be act ivate d so  that 
the  automatic  adjustment  of  the  Adaptive  Air 
Suspension  does  not  ma ke  it  more  diffic ult  to 
raise  the  ve hicle w it h  the  floor  jack . 
Emergency  situations 
If  you must  lift  your vehicle with  a floor  jack to 
work  unde rneath , be sure the  vehicle is safely 
supported  on stands  intended  for  this  purpose. 
Front  lifting  point 
T he  li fting  poi nt  is locate d on  the  floor  p an  reinÂ
f o rcement  about  at  the  sa me  level  as  the ja ck 
mounting  point¢ 
fig. 237 . Do not  lift  the  vehiÂ
cle at the  vertical  sill  re inforcement . 
Rear  lifting  point 
T he  lif ting  point  is locate d on  the vertical  rei nÂ
f o rcement  of  the lowe r sill for  the  on-bo ard j ack 
¢fig.  238 . 
Lifting  with  vehicle  jack 
Refer  to¢ page  261 . 
A WARNING 
-- To  reduce  the  r is k  of se rious  inju ry  and  veh i-
cle  dama ge. 
- Always  lift  the  vehicle  on ly at  the  special 
w orkshop  hoist  and  f loor  jack  lift  points 
il Â
lu strated¢ fig.  237 and¢ fig.  238. 
- Failure  to  lift  the  ve hicle  at  these  points 
could  cause  the  veh icle  to  tilt  or fall  fr om 
a  lift  if t here  is a  change  in vehicle  weight 
dist ribution  and  balance . Th is  m ig ht  hapÂ
pen , fo r e xampl e, wh en  heavy  compoÂ
n ents  such  as  the  eng in e  block  o r transÂ
mi ssion  are  removed. 
- W hen re mov ing  heavy componen ts  like 
t hese,  anchor  veh icle  to  hoist  or  add  co rreÂ
s p ondin g weig hts to  maintai n the  center  of 
g ra vity. O therw ise,  the  vehicle  mig ht  tilt  or 
slip 
o ff th e  hois t, c ausing  se rious  pe rsonal 
i njur y. 
(D Note 
- Be aw are  of  the fo ll ow ing poi nts  before liftÂ
ing  the vehicle: 
-The vehicle  should  never be lifted  or 
jacked  up from  underneath  the  engine  oil 
pan,  the  transmission  housing,  the  front 
or rear axle or the  body side members . 
This could lead to  serious damage . 
- To avoid damage  to  the  underbody  or 
chassis frame,  a rubber  pad must  be 
275