check engine AUDI Q3 2018 User Guide
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Page 157 of 230

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Fuel filler  door emergency release 
If  the  central  locking  system  is faulty,  the  fuel filler  door  can  be  unlocked  manually. 
Fi g.  134 Right  si de tr im  j:>ane l in  the  luggage  compart
ment:  emergen cy  release  mechani sm 
The  emergency  opening  mechanism  is  located 
behind  the  right  side  trim  panel  in  the  luggage 
compa rtme nt. 
•  Remove  the  cover in  the  side  panel. 
•  Loosen  the  strap  from  its bracket  -arrow- and 
pull  on  it  carefully<=:> 
fig.  134 c:>(D . The  filler 
doo r is  released . 
•  Press  on  the  lef t side  of  the  fuel  fille r doo r to 
open  it 
<=:> page  153,  fig.  132 . 
(D Note 
Onl y pull  o n the  loop  until  you  feel  resi stance. 
You will  not  he ar  it  relea se.  O therwise  yo u 
co uld  d amage  the  eme rge ncy re lea se  me ch a
nism . 
Catalytic  converter 
The  vehicle  may  o nly be  dr iven  with  unleaded 
gasoline,  otherwise  the  catalyt ic converter  will  be 
destroyed . 
N ever  d rive until  the  tank  is  comp letely  e mpty . 
The  irregular  supply  of f uel  th at  resul ts from  that 
can  cause  engine  m isfires.  Uncombus ted  f uel  will 
enter  the  exhaust system,  wh ic h  can  cau se  ove r
heat ing  and  damage  to the  catalyt ic converter . 
A WARNING 
-The  temperature  in the  ex ha ust  system  is 
high,  both  when  dr iving  and  after  stopping 
the  engine. 
-
Checking  and  Filling 
- Never  touch  the  exhaust  tail  pipes  o nce they 
have  become  hot . This  cou ld  resu lt  in  burns. 
- Do not  par k your  vehicle  over  flammable 
mate ria ls s uch  as  grass  or  leaves  because 
the  high  temperature  of  the  emissions  con
trol  system  could  start  a fire. 
- Do not  app ly unde rbody  protectant  in  the 
exhaust  system  area,  because  this  increases 
the  risk  of  fire. 
Engine  compartment 
'  Working  in the  engine  compartment 
Special  care  is  required if you  are  working  in the 
engine  compartmen t 
For work  in the  engine  compartment,  such as 
checking and fill ing fluids,  there  is a risk of  in
jury,  scalding,  accident s, and  burns . For thi s 
reason, follow  all  the  warnings  and general 
s afety  pre caution s provided in the  following  in 
formation.  The engine  compartment  is a dan
gerous a rea on the  vehicle . 
<=:> .&. 
A WARNING 
-Turn  the  engine  off . 
- Sw itch  th e  ignition  off . 
- Se t the  p arking  brak e. 
- M ove  the  selec tor  lever  i nto  the  P position. 
- Never  open  the  hood  whe n th ere  is steam  o r 
coo lant  escaping  from  the  engine  comp art
men t,  bec ause  there  is  a  risk that  yo u could 
be  burned.  Wai t  until no  s te a m  o r coolan t is 
escaping . 
- Le t  t he  eng ine cool  down. 
- Keep  children  away  from  th e eng in e  com-
p ar tme nt. 
- N ever  sp ill fluid s on  a  ho t  engine . These  flu
i d s  (su ch  as  the  free ze  p ro te ct ion contained 
in  the  coolant)  c an catch fi re. 
- Avoid short  circui ts in  th e  electrical  system. 
- When  working  in  the  engine  compartment, 
remember  that  the  radiator  fan  can  swi tch 
o n  even  if t he  igni tion  i s sw itched  off,  w hich 
i n cre a ses  the  r is k  of  person al injury. 
~ 
155  
Page 158 of 230

Checking  and  Filling 
-Never open the  cap on the  coolant  expan
sion  tank  when  the  engine  is warm.  The 
cooling  system  is under  pressure. 
- To  protect  your  face,  hands,  and arms  from 
hot  steam  or  coolant,  cover the  cap with  a 
large  cloth  when  opening. 
- Do not  remove  the  engine  cover under  any  circumstances.  This increases the  risk of 
burns. 
- If  tests  need to  be performed  with  the  en
gine  running,  there  is additional  danger  due 
to  moving  components  (such as the  ribbed  belt,  alternator  and  radiator fan)  and from 
the  high-voltage  ignition  system. 
- Do not  under any circumstances  give gas in
advertently  (for  example,  by hand from  the 
engine  compartment)  if  the vehicle  is sta
tionary  but  the  engine  is running  and  a gear 
is engaged.  Otherwise, the  vehicle  will  start 
to  move immediately  and this  could  result 
in an accident. 
- Pay attention  to  the following  warnings  list
ed when  work  on the  fuel  system  or  on the 
electrical  equipment  is  required. 
- Do not  smoke . 
- Never work  near open flames. 
- Always  have a working  fire  extinguisher 
nearby. 
- All  work  on the  battery  or  electrical  system 
in your  vehicle  can result  in  injuries, chemi
cal burns,  accidents  or  burns.  Because of 
this,  all  work  must  be performed 
only by an 
authorized  Audi  dealer  or authorized  Audi 
Service Facility. 
- To  reduce  the risk  of  electric  shock and in
jury,  never touch  the  following  components  when  the  engine  is running  or  is being  start
ed: 
- Ignition  cable 
- Other  components  in the  electronic  high-
voltage  ignition system 
- If  you  must  check or  perform work  on the 
engine  while  it is  running: 
- Set the  parking  brake and  place the  selec
tor  lever  in the  P (park)  position  first . 
- Always  proceed with  extreme  caution  so 
that  clothing,  jewelry  or  long hair  do  not 
156 
become  caught  in the  radiator  fan,  fan 
belt  or  other  moving  components  or  do 
not  come into  contact  with  hot  compo
nents.  Tie back long  hair before  beginning 
work  and do not  wear  clothing  that can 
hang  down  into  the  engine . 
- Limit  your  exposure to  exhaust  and  chemi cals to  as short  a time  as possible 
¢ &, . 
A WARNING 
California  Proposition  65 Warning: 
- Engi ne exhaust,  some of  its  constituents, 
and certain  vehicle  components  contain  or 
emit  chemicals  known  to the  State  of  Cali
fornia  to  cause cancer and  birth defects  and 
reproductive  harm . In  addition,  certain  flu
ids  contained  in  vehicles and certain  prod
ucts  of  component  wear  contain  or  emit 
chemicals  known  to  the  State  of  California 
to  cause cancer and birth  defects  or  other  reproductive  harm . 
- Battery  posts,  terminals  and  related  acces
sories contain  lead and lead  compounds, 
chemicals known  to  the  State  of  California 
to  cause cancer and reproductive  harms. 
Wash  hands after  handling. 
@ Note 
When  filling  fluids, be sure  not  to  mix  the  flu
ids  up.  Otherwise  severe malfunctions  and en
gine  damage will  occur . 
@ For the  sake of  the  environment 
You should  regularly  check the  ground  under 
your  vehicle  in order  to  detect  leaks quickly.  If  there  are visible  spots  from  oil  or  other  fluids, 
bring  your  vehicle  to an authorized  Audi  deal
er or  authorized  Audi  Service Facility  to  be 
checked.  
Page 159 of 230

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Opening/closing  the  hood 
The hood  is released  from  inside  the  vehicle. 
Fig. 135  Driver footwell:  release  lever 
Fig.  136  Rocker switch  under  the  hood 
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Make sure  the  wiper  arms  are  not  raised  up from 
the  windshield.  Otherwise  the  paint  could  be 
damaged. 
Opening  the  hood 
..  With  the  driver's  door  open,  pull  the  lever be
low the  instrument  panel  in the  direction  of the 
arrow¢fig.135. 
Checking  and  Filling 
.. Raise  the  hood  slightly¢,& . 
..  Press  the  rocker  switch  under  the  hood  upward 
¢fig. 136. This  releases  the  catch  . 
..  Open  the hood. 
Closing the  hood 
.. Push  the  hood  down  until  you  override  the 
force  of the  strut  . 
..  Let  the  hood  fall  lightly  into the latch. 
Do not 
press  it in. 
c> ,&. 
A WARNING 
-
-Never open  the hood  when  there  is steam  or 
coolant  escaping  from  the  engine  compart
ment,  because  there  is a  risk that  you  could 
be  burned.  Wait  until no  steam  or  coolant  is 
escaping. 
- If the  hood  is  not latched  completely,  it 
could  fly up  while  you  are  driving  and  ob
struct  your  vision. 
- For safety  reasons,  the hood  must  always  be 
closed  securely  while  driving.  Because  of 
this,  always  check  the hood after closing  it 
to  make  sure  it is  latched  correctly.  The 
hood  is latched  if the  front  corners  cannot 
be  lifted. 
- If  you  notice  that  the  hood  is not  latched 
while  you  are  driving,  stop  immediately and 
close  it,  because  dr iving when  the  hood  is 
not  latched  increases  the risk  of an  accident  . 
157  
Page 160 of 230

Checking  and  Filling 
Engine compartment  overview 
The most  important  check points. 
Fig.  137 Typical  location  of the  rese rvoir and  the  engine  o il fil le r open ing 
(D Coolant  reservoir ( - L) ¢ page  162 
@  Oil dipstick ¢ page  160 
® Engine  oil filler  opening ('t:::r.) ¢page  160 
© Eng ine  oil  label*  w ith  VW standard 
evpage  158 
® Brake  f luid  reservoir  ((0)) ¢ page  163 
® Vehicle  battery(+) ¢ page  164, evpage  203 
(?) Jump  start  point( -) w ith  hex  head  screw 
ev page  164,  ev page  203 
@ Washer  fluid  reservoir (O) ev page  165 
® Fuse  housing c:::> page  199 
The  oil  dipstick  (item @) and  the  engine  oil fi ller 
open ing  (item @) can  be  located  in  different  po
sitions  depend ing  on  the  engine  version. 
_& WARNING 
Read  and  follow  all  WARN INGS before  check
ing  anything  i n the  engi ne  compa rtment¢ &. 
in Working in the  engine  compartment  on 
page  155 . 
158 
Engine  oil 
Engine  oil  specifications 
The engine  oil used  must  conform  to exact  speci
fications. 
The  serv ice  interval  d isplay  in the  inst rumen t 
cluster  of your  vehicle  will  inform  you  when  it  is 
time  for  an  o il change . We  recommend  that  you 
have  your  oi l changed  by a n authorized  Audi Se rv
i ce  Advisor. 
If you  must  add  oil  betwee n oil changes,  use  an 
oi l that  matches  the  Audi  oil quality  standard 
li sted  on  the  sticker.  The  sticker  is  located  at  the 
front  of  the  eng ine  compartment ¢ 
page  158, 
fig.  137 . 
Audi  re commend s 
~Castrol /fg/j;Sf.g;fg f'r
eng ine oil from  Aud i Genuine  Pa rt s 
liJI,  
Page 161 of 230

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Using the  prope r engine  oil is important  for  the 
functionality  and  s ervice life of the  engine.  Your 
engine  was  factory-filled  with  a high -quality  oil 
which can  usually  be  used  throughout  the  entire 
year . 
Note 
Your Limited  New Vehicle Warranty  does  not 
cover damage  or  malfunctions  due  to  failure 
to  follow  recommended  maintenance  and  use 
requirements  as  set  forth  in the  Audi Owner's Manual  and  Warranty  & Maintenance  booklet . 
- Use only a high  quality  engine  oil that  ex-
pressly  complies  with  the  Aud i oil quality 
standard  specified  for your  vehicle's  engine. 
Using any o ther  oil can  cause  serious  engine 
damage. 
- Do not  mix any lubricants  o r other  additives 
into  the  engine  oil.  Doing so can  cause  en
gine  damage. 
@ Tips 
If you  need  to  add  oil and  there  is none  availa
ble  that  meets  the  Audi o il quality  standard 
your  eng ine  requ ires,  you may  add  a total  of 
no  more  than  0 .5 quart/li ter  of a  h igh-quality 
"synthet ic"oil that  meets  the  following  speci 
fications. 
- ACEA A3 or  API SM with  a v iscosity  grade  o f 
SAE OW-30, SAE SW -30  or  SAE SW-40. 
- Fo r more  information  abou t engine  o il  t ha t 
has  been  approved  for  your  vehicle,  please 
contact  either  your authorized  Audi dea ler 
or  Audi Custome r Relat ions  at 
1 (800)  822-2834  or visit  our web  site  at 
www .audiusa.com  or www .aud icanada .ca. 
Engine  oil  consumption 
T he engine  in your  vehicle  depends on an ade
qua te amoun t of  oil  to  lubricate  and  cool  all  of 
i t s moving  par ts. 
In  order  to  provide  effective  lub rication  and  coo l
ing of  in te rnal  engine  components,  a ll internal 
combustion  engines  consume  a cer tain  amount 
of  oil. Oil consumption  varies  from  engine  to  en 
g ine and  may  change  sign ificantly  over the  life of 
the  eng ine . Typically, eng ines  with  a spec ified 
Ch eck ing  and  Filling 
break-in  period  (see ¢ page 57) consume  more 
oi l during  th e break-in  period  than  they  consume 
after  oil consumption  has  stabilized. 
Under  normal  cond itions,  the  rate  of  oil con
sumption  depends  on the  q uality  and  viscos ity  o f 
the  oil , the  RPM (revolutions  per  minut e) at 
which  the  engine  is operated,  the  amb ient  tem
perature  and  road  condit ions.  Further  factors  are 
the  amount  of  oil dilution  from  w ater  condensa
tion  or fuel  resid ue and  the  oxidation  level of  the 
o il. As any engine  is subject  to  wear  as  mileage 
builds  up,  the  oi l consumption  may  increase  ove r 
t ime  unt il repla cement  of worn  components  may 
become  necessary. 
With  al l these  variables  coming  into  play,  no 
standard  rate  of  o il consumption  can  be estab
l ished  or  spec ified . T he re is no alte rnative  to  reg
u la r and  fre quent  chec king of  the o il level , see 
Note . 
If the  yellow engine  oil level warning  symbo l II 
in the  instrument  cluster  lights  up , you  sho uld 
check the  o il level as  soon  as  possible 
¢ page  160. Top off  the  o il at  your  earliest  con
venience. 
A WARNING 
Before you  check anything  in the  engine  com
partment,  always  read  and  heed  all WARN 
INGS¢ .&. 
in  Working  in  the  engine  compart
ment  on page  155. 
(D Note 
D riving wit h an  insufficient  oil level is likely to 
cause  severe  damage  to  the  engine . 
(D Tips 
- The oil  pressure  warn ing display.  i s not 
an indicato r of  the  o il le vel.  Do not  rely  on 
it . Instead,  check the  oil  level  in  your en 
gine  at  regular intervals , pre fe rabl y each 
time  you  refuel,  and alw ays  befo re  go ing 
on  a long  trip . 
-If you  have the  impression  your  engine  con
sumes  excessive  amounts  of oi l, we  recom
mend  that  you consult  an  author ized  Audi 
dea ler  to  have the  cause  of your  concern 
159  
Page 162 of 230

Checking  and  Filling 
properly  diagnosed.  Keep  in mind  that  the 
accurate  measurement  of  oil consumption  requires  great  care  and  may  take  some 
time.  An author ized  Audi  dealer  has  instruc
tions  about  how  to  measure  oil  consump
tion  accu rately. 
Checking the  engine  oil  level and  adding 
engine  oil 
F ig.  138 Oil d ipstick (example): c hecki ng  the  engine oi l 
level 
F ig.  139 Engine compartment:  eng ine o il filler  opening 
cove r 
Observe  the  safety  precautions c:> page 155, 
Working  in  the  engine  compartment . 
Checking the  engine  oil  level 
- Park  the vehicle  on a level  surface. 
- Shut  the  engine 
off when  it is warm.  Wait  ap-
0 N 
-N ~ a, (D 
prox imately  two  m inutes  so  that  the  engine oil 
can  flow  back  into  the  oil  pan. 
- Open  the  hood 
c:> page  157. 
-Remove  the  oi l dipstick <=> page  158,  fig . 137, 
wipe  it  off  with  a  clean  cloth  and  insert  it all the 
way  in  again. 
- Remove  the  oil  dipstick  again  and  then  read  the 
oil  level 
c:> table  on page  160. 
-Add  engine  oil if  necessary. 
160 
Areas  on  the  o il dipstick c::> fig.  138. 
(D If the  engine  oil  leve l is  just  before  the 
mark ing 
(D , then  engine  oil  must  be added . 
See 
c:> @ . 
@  Do no
t add  engine  oil. 
Adding  engine  oil 
- Unscrew  the  cap 
't=:rl c:> fig.  139 for  the  engi ne 
oil fil ling  open ing 
c:>page  158,  fig.  137. 
- Carefully  add  0 .5 quart  (0.5  lite r) of  the  correct 
oil 
<=> page  158. 
-Check  the  oil  level  again  after  two  minutes . 
- Add  a  smaller  amount  of  engine  oil  if  necessa-
ry . The  mark ing @ c:> 
fig.  138 must  not  be  ex
ceeded  c:>Cl) . 
- Screw  the  eng ine  oil filler  cap 
't=:rl and  slide  the 
dipstick  all  the  way  in  . 
.&, WARNING 
-When  adding  eng ine  oi l, do  not  let  o il d rip 
on to  hot  engine  components.  Th is  increases 
t he  risk  of  a fire. 
- You must  sea l the  cap  on  the  oi l filler  open
ing  correct ly so  that  oi l does  not  leak  ou t 
onto  the  hot  engine  and  exha ust  system 
when  the  engine  is  running,  beca use  this  is 
a fire  hazard . 
- Always  clean  skin  thoro ughly  if it  comes  into 
contact  with  engine  oi l. 
(D Note 
- The  engine  o il level  mus t not  be  under  the 
marking 
(D , because  this  increases  the  risk 
of  engine  damage . 
- After  add ing  engi ne  oil,  the  oil  leve l must 
not  be  above  the  mar king @, because  this 
increases  the  risk  of  catalytic  converte r and/ 
or  engine  damage . Do not  start  the  engine. 
Contact  an  authorized  A udi  dealer  or  au
thorized  Aud i Service  Facility  to  have  excess 
engine  oil  extracted  if necessary. 
- Do not  mix  any  addit iona l lubr icants  into 
the  engine  oil.  Damage  caused  by such  addi-
t ives  is not  covered  by  the warranty.  .,_  
Page 163 of 230

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@ Fo r the  sa ke of  the  env ironment 
- Engine  oi l should  never  enter  the  sewer  sys
tem  or  come  into  contact  with  the  ground 
under  any  circumstances. 
- Pay attention  to  legal  requirements  when 
disposing  of  empty  oil  containers. 
The  engine  oil consumption  may  be  up  to  0.5  quart/600  m iles  (0.5  liter/1,000  km),  de
pending  on  driving  style  and  operating  condi
tions.  Consumption  may  be  higher  during  the 
first  3,000  miles  (5,000  km).  The  engine  oil 
level  must  be  checked  regularly . It  would  be 
best  to  check  each  time  you  refuel  your  vehi
cle  and  before  long  dr ives. 
Changing  the  engine  oil 
We recommend  that  have your  oil changed  by an 
authorized  Audi dealer or a qualified  service sta
tion. 
Before  you  check  anyth ing  in the  eng ine  compart
ment, 
alw ays r ea d and heed all  WARNINGS Q .&. 
in Working in the  engine  compartment  on 
page  155. 
The  engine  oil  must  be  changed  according  to  the 
intervals  specified  in your  Warranty 
& Mainte
n ance  booklet.  This  is very  important  because  the 
l ubri cat ing  propert ies  of  o il diminish  gradually 
d ur ing  normal  vehicle  use. 
Under  some  c ircumstances  the  eng ine  o il should 
be  changed  more  frequently . Change  oil  more  of
ten  if yo u drive mostly  short  distances,  ope rate 
the  vehicle  in d usty  areas  or  under  predominant ly 
stop-and -go  traffic  conditions,  or  have  your  vehi
cle  where  temperatures  remain  below  freezing 
for  extended  periods. 
Detergent  additives  in the  oil will  make  fresh  oil 
l ook  da rk after  the  engine  has  been  running  for  a 
short  time.  This  is  normal  and  is  not  a  reason  to 
change  the  oil  more  often  than  recommended. 
Because  of  the  problem  of  p roper  disposal,  along 
with  the  special  tools  and  necessa ry expertise  re
qu ired,  we  strong ly recommend  that  you  have 
Ch eck ing  and  Filling 
your  oi l changed  by an  authorized Audi dealer or 
a qualified  service  station . 
If yo u choo se to  ch ange yo ur oil your self, please 
note  the  follow ing  important  info rmation: 
A WARNING 
= 
To reduce  the  risk  of  persona l injury  if you 
must  change  the  engine  oil  in your  vehicle 
yourself: 
- Wear  eye  protect ion . 
-
-To  redu ce the  r is k  of  burns  from  hot  eng ine 
oil,  let  the  engine  cool  down  to  the  touch. 
- W hen  remov ing  the  oil d rain  plug  w ith  your 
fingers,  stay  as  far  away  as  possib le.  Always 
keep  your  forearm  parallel  to  the  ground  to 
he lp  prevent  hot  oil from  running  down  your 
arm. 
- Drain  the  oil  into  a  container  designed  for 
this  purpose,  one  la rge  enough  to  hold  at 
least  the  tota l amount  of  oil  in your  engine. 
- Engine  oil  is  poisonous.  Keep  it well  out  of 
the  reach  of  children. 
- Continuous  contact  with  used  engine  oil is 
harmful  to  your  skin.  Always  protect  your 
skin  by washing  oil off  thoroughly  with  soap 
and  water. 
(D Note 
Never  mix  oil additives  with  your  engine  oil. 
These  additives  can  damage  your  engine  and 
adverse ly affect  yo ur Audi  Limited  New Vehi
cle  Warranty. 
@ For the  sa ke of  the  environment 
- Before  chang ing  your  oi l, first  make  sure 
you  know  where  you  can  properly  d ispose  of 
the  used  oil. 
- Always  dispose  of  used  engine  o il properly. 
Do not  dump  it  on  garden  soil,  wooded 
areas,  into  open  streams  or  down  sewage 
drains. 
- Recycle  used  engine  o il by tak ing  it  to  a  used 
eng ine  oil  collection  fac ility  in your  area,  or 
contact  a  service  station . 
161  
Page 164 of 230

Check ing  and  F illing 
Cooling  system 
Coolant 
The engine  coo ling system  is filled with a  mixture 
of pur ified wate r and coolan t addit ive at  the  fa c
t ory . T his  coo la nt  must  not  be  not  changed . 
The coolant  leve l is monito red  throug h the .  in
d icator  light 
¢ page  12. Howeve r,  we do recom
mend  occasionally chec king the  coo la nt  level 
manually. 
If you must  add  coolant,  use  a m ixt ure of wa ter 
a nd coo lant  add it ive.  Mixing  the  coolant  additive 
with d istilled  water  is recommended. 
Coolant  additive 
The coolant  additive  is made  of ant i-freezing  and 
corros ion protection  agents.  Only use  the  fo llow
ing coolant  add it ives. These addit ives  may be 
m ixed w it h  each  other. 
Coolant additive  Specification 
G13 
TL 774 J 
G12++  TL 774  G 
The amount  of coo lant  add itive that  needs  to  be 
mixed wit h water  depends  on the  climate  where 
the  vehicle will be operated . If the  coolant  addi 
tive percentage  is too  low, the  coolant  can free ze 
and  damage  the  engine. 
Coolant  Freeze protec-
additive  tion 
Warm  min . 40%  m in. -13  °F 
reg ions  max . 45%  (
- 25 °C) 
Co ld  min.  50%  max. -40  °F 
reg ions  max. 55%  (-40 °C) 
CJ) Note 
- Befo re the  start  of winter,  have an  author
i zed Audi dealer  or authorized  A udi Service 
Fac ility check if the  coolant  additive  in yo ur 
vehicle matc hes  the  percentage  approp riate 
for the  climate . Th is is especially  important 
whe n driving in co lde r clima tes. 
- If the  approp riate  coolant  additive  is  not 
available  in an  emergency,  do no t add  any 
other  addi tive . You cou ld damage  the en-
162 
gine . If this  h appens,  on ly use  wa ter and  re 
store  the  correct  m ixt ure ratio  with t he 
specified  coo lant  ad ditive as soon  as  poss i
ble. 
- Only refill w ith  new coolant . 
- Radiator  sealant  mus t  not  be  mixed wi th 
the  coolant . 
Adding  coolant 
Fig. 140 En gine  co mpar tm ent:  coo la nt  expans io n  ta nk 
cove r 
Observe the  safety  precautions¢ page  155, 
Working in the  engine  compartment . 
Checking  the  eng ine  c oolant  level 
.,.  Park the  vehicle on a level surface . 
.,.  Sw itch  the  ignit ion off. 
-"' -"' • 
"" co a, 
.,.  Read the  coolant  level on the  coolant  expansion 
tank ¢ 
page  158 , fig.  137. T he coolant  leve l 
must  be  betwee n the  markings  when  the  en
gi ne i n cold . When  t he e ng ine  is warm  it  can be 
slightly  above  the  uppe r mar king . 
Adding  coolant 
Requirement:  there  must  be  a residual  amount  of 
coolant  in the  expansion  ta nk 
¢ (D . 
.,. Let the  engine  coo l down. 
.,.  Place a clot h over the  coolant  expansion  tan k 
cap and  unscrew  the  cap counterclockw ise 
¢ .&._ . 
.,. Add coo lant  m ixed in the  cor rect  rat io 
c;, page  162 up to  t he up per  ma rk ing  . 
.,.  Make sure  that  the  fluid level  remains  stab le. 
Add mo re coolan t  if necess ary. 
.,.  Close the  cap sec urely . 
Coo lant  loss  usually ind icates  there  is a  lea k. Im-
med iate ly dr ive you r ve hicl e to  a n author ized  .,.  
Page 165 of 230

a 
co 
...... N r-,. N 
"" 0 0 ::, co 
Audi  dealer  or authorized  Audi  Service Facility 
and  have the  cooling  system  inspected. If  the 
cooling  system  is not  leaking,  a loss can come 
from  the  coolant  boiling  through  overheating 
and  being  pushed  out  of  the  cooling  system. 
A WARNING 
- The cooling  system  is under  pressure . Do 
not  open  the coolant  expansion  tank cap 
when  the  engine  is  hot . This  increases  the 
risk of  burns . 
- The  coolant  additive  and the  coolant  can  be 
dangerous  to  your  health.  For this  reason, 
keep  the  coolant  in  the  original container 
and away from  children. There is a risk  of 
poisoning. 
- When  working  in the  engine  compartment, 
remember  that  the  radiator  fan  can switch 
on even if  the  ignition  is switched  off,  which 
increases the  risk of  injury. 
CD Note 
-
Do not  add  coolant if  the  expansion  tank is 
empty . Air  could  enter  the cooling  system  and 
damage  the engine. 
If this  is the  case, do  not 
continue  driving.  See an authorized  Audi  deal
er or  authorized  Audi  Service Facility  for  assis
tance. 
Brake  fluid 
Fig. 141 Eng ine compartment:  cap on brake flu id reservoir 
Observe  the safety  precautions ¢ page  155, 
Working  in the  engine compartment . 
Checking the  brake fluid  level 
~ Read the  brake  fluid Level on the  brake fluid 
reservoir ~ 
page  158,  fig . 13 7.  The  brake fluid 
Checking  and  Filling 
Level must  be between  the  MIN and MAX mark
ings 
~ A . 
The  brake  fluid  Level  is monitored  automatically. 
Changing the  brake fluid 
Have the  brake fluid  changed  regularly  by an au
thorized  Audi  dealer  or  authorized  Audi  Service  Facility . 
A WARNING 
- If  the  brake fluid level  is below  the  MIN 
marking,  it can  impair  the  braking  effect 
and driving  safety,  which  increase the  risk  of 
an accident.  Do not  continue  driving.  See an 
authorized  Audi  dealer  or  authorized  A udi 
Service Facility  for  assistance. 
- If  the  brake fluid  is old,  bubbles  may form 
in the  brake system  during  heavy braking . 
This would  impair  braking  performance  and  driving  safety,  which  increases the  risk  of  an 
accident . 
- To ensure the  brake system  functions  cor
rectly,  only  use brake fluids  that  comply 
with  VW standard  501  14 or 
FMVSS-116 DOT  4. 
CD Note 
- If  the  brake flu id  level  is above the  MAX 
marking,  brake fluid  may  Leak out  over the 
edge of  the  reservoir and  result  in damage 
to  the  vehicle. 
- Do  not  get  any brake fluid  on the  vehicle 
paint,  because  it will  corrode  the  paint. 
Battery 
General warnings  about  batteries 
Because of  the  complex  power  supp ly,  all  work 
on batteries  such as disconnecting,  replacing, 
etc.  should 
only be performed  by an authorized 
Audi  dealer  or  authorized  Audi  Service  Facility 
¢ .&,. 
The term  "vehicle  battery " refers  to  the  12 Volt 
battery  in your  vehicle. 
163 
...  
Page 166 of 230

Checking  and  Filling 
Detailed  warning s for the  vehicle  b atter y: 
® 
Wear  eye  protection . 
A 
Battery  acid  is high ly corrosive . Wear  pro-
tective  gloves  and  eye  pro tect ion. 
@ 
F ire,  spark s,  open  flame  an d smok ing  are 
forb idden . 
~ 
A highly  explosive  mix ture  of gases  can 
form  when  charging  batteries. 
® 
Keep  c hildren  away  from  battery  acid  and 
ba tteries . 
A WARNING 
All work  on  the  battery  or  electrical  system  in 
your  vehicle  can  result  in  injuries,  chemical 
burns,  accidents  or  burns.  Because  of  this,  all 
work  must  be  performed 
onl y by an  author
i z ed  Aud i dealer  or authorized  Audi Serv ice 
Facility. 
A WARNING 
California  Proposit ion  65  Warning : 
- Battery  posts,  termina ls  and  related  acces
sories  contain  lead  and  lead  compounds, 
chem icals  known  to  the  State  of  California 
to  cause  cancer  and  reproductive  problems . 
Wash  hands  after  handling . 
(D Note 
Protect  the  vehicle  battery  against  freezing  if 
the  vehicle  wilt  be  parked  for  long  periods  of 
time  so  that  it  is  not  destroyed  by  "freezing" 
9 page  164,  Charging the  vehicle battery . 
Charging the  vehicle  battery 
Fig . 14 2 Eng ine co mpartment:  con nect ors fo r a c har ger 
and  jump  start cab les 
164 
Observe  the  safety  precautions 9 pag e 155, 
Working in the  eng ine compartm ent. 
Requirement:  only  use  chargers  with  a maximum 
ch arg ing  curr ent of  30  amps /14 .8 V olt s. 
The  ve
hicle  battery  cables  remain  connected . 
The  battery  is  located  in the  engine  compart
ment . T he  ground  po int 
0 i s always  located  on 
the  veh icle  body . 
.,.  Read  the  wa rnings 
9 .&. in General warnings 
about  batteries  on page  164 
and 9 ,&. . 
.,. Switch  off  the  ig nitio n  and  all  electrica l equ ip-
men t. 
.,.  Open  the  hood 
9 page  157 . 
.,. Fold th e battery  cover  upward 9 fig.  142. 
.,. Clamp  the  terminal  clamps  on  the  charger  cor
rectly  onto  the  ground  point 
O and  the  pos it ive 
termin al(v . 
.,.  Now insert  the  power  cable  for  the  charging  de 
vice  into  the  socket  and  switch  the  device  on . 
.,.  At the  end  of the  charging  p rocess,  switch  the 
charger  off  and  pull  the  power  cable  ou t of  the 
socket. 
.,.  Now remove  the  charging  device  term inal 
clamps. 
.,.  Close the  batt ery cov er. 
.,.  Close  the  hood 
¢ page  15 7. 
A WARNING 
- A high ly explosive  mixture  of gases  can  form 
when  charg ing  batteries . Only charge  the 
veh icle  battery  in we ll-ventilated  areas . 
- A drained  vehicle  battery  can  freeze  at  tem
peratures  around  32  QF (0  QC). A frozen  or 
thawed  vehicle  battery  must  not  be  charged 
and  must  not  be  used  anymo re . T he  battery 
housing  can  crack  and  batte ry a cid  can  leak 
out  if ice  forms,  which  increases  the  risk of 
an  explosion  and  chemical  burns.  Contact  an 
authorized  Audi dealer  or  authorized  Audi 
Service  Facility for  more  information. 
- Do not  connect  or  disconnect  the  charging 
cable  wh ile  charging  because  this  increases 
the  risk of  an  explosion .