
A WARNING ,~
- The cooling system is under pressure and
can get very hot. Reduce the risk of scald ing
from hot coolant by following these steps.
- Turn
off the engine and allow it to coo l
down.
- Protect you r face, hands and arms from
escaping fluid and steam by cover ing the
cap with a large, thick rag.
- Turn the cap slowly and very carefully in a
counter-clockwise d irection while applying
light, downward p ressure on the top of
the cap.
- To avoid being burned, do not spill anti
freeze or coolant on the exhaust system or
hot engine parts. Under certa in cond i
tions, the ethylene glycol in eng ine cool
ant can catch fire.
- Antifreeze is poisonous. Always store anti
freeze in its orig inal container and well out
of the reach of children.
- If you dra in the coolant, it must be caught
and safely stored in a proper conta iner
clearly marked "poison".
- Do not add coolant if the expansion tank is
empty. Air cou ld enter the cooling system
and damage the eng ine. If this is the case,
do not continue driving . Seek professional
ass istance.
- Coolant pollutes the env ironment and could
cause an eng ine fire. Excess coolant will be
fo rced o ut through the pressure relief valve
i n the cap when the e ng ine be comes hot.
- If, in an emergency, only wate r can be add
ed, the co rrect r atio betwee n wate r and an
tifree ze
Q page 183 must be res to red as
soon as possib le.
{® For the sake of the environment
Dra ined coolant sho uld not be reused. Always
disp ose of used coolant while obse rving all
....
"' environment al regulat ions. ci ::, co ....
Ch eck ing and Filling
Rad iator fan
The radiator fan switches on automatically by it
self .
The radiator fan is driven by the engine via the V
belt. The viscous clutch regulates th e speed of
the fan accord ing to the temperature of the cool
ant .
An auxiliary e lectr ic radiator fan* switches on and
off depending on coo lant temperature and other
vehicle operating conditions.
After you switch the engine
off, the auxiliary fan
can continue running for up to 10 m inutes -even
with the ignition
off. It can even switch on aga in
later by itself
Q .& , if
- the temperature of the engine coolant rises due
to the heat build-up from the engine in the en
gine compartment, or
- the engine compartment heats up beca use the
veh icle is parked in intense sunlight.
A WARNING
- To reduce the r isk of persona l injury neve r
touch the radia to r fan .
- The auxiliary e lectr ic fan is temperature
controlled and can switch on s uddenly even
when the engine is not ru nning .
- The a uxiliary radiator fan sw itches on auto
mat ically when the eng ine coolant reaches a
certa in temperature a nd will continue to run
until the coolant temperature d rops.
185

Checking and Filling
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a quick
glance.
Fig. 153 Eng ine compartment: Cover on the brake fluid
r eservoir
Before you check anything in the engine compart
ment,
always read and heed all WARNINGS
¢ A in Working in the engine compartment on
page 177.
., Read the brake fluid level from the brake fluid
reservoir
<=> fig . 153, ¢page 179, fig . 149 . The
brake fluid level must be between the
" MIN"
and "MAX " markings.
The brake fluid reservoir is located at the rear
partition of the engine compartment on the left
side ¢
page 179 .
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 (USA models:
1111 , Canada models:. )
will come on¢
page 13 . Do not continue to oper
ate the vehicle . The complete brake system
should be thoroughly checked by an authorized
Aud i dealer or qualified workshop and the cause
corrected. If the brake fluid level is too low, the
brake warning/indicator light w ill illuminate.
Contact an author ized Audi dealer
immediately.
(D} Tips
The brake fluid reservoir is located under
neath the cover.
186
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 ape
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
every
two years .
Always use new brake fluid which con
forms to Feder-al Motor Vehicle Standard "FMVSS
116 DOT 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
dealer .
Your dealer has the correct tools, the
right brake fluid and the know-how to do this for
you.
A WARNING
- Brake fluid is poisonous. 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 inappro
priate brake fluid. Observe these precau
tions:
- Use only brake fluid that meets SAE speci
fi cation
J 1703 and conforms to Federal
Motor Veh icle Standard 116. Always check
with your authorized Audi dealer to make
sure you are using the correct brake fluid .
The correct type of brake f luid is also indi
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,

@ For the sake of the environment
Because of the problem of proper disposal of
brake fluid as we ll as the special toots re
quired and the necessary expertise, we rec
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 maintenance.
With
high outside temperatures or long daily
drives we recommend that you have the electro
lyte level checked by an authorized Audi dealer or
qualified workshop. The electrolyte level should
also be checked each time the battery is charged
c> page 189.
Have the battery checked when you take your ve
hicle in for serv ice. You are well advised to re
place a battery t hat is older than 5 years.
With certain types of airbag deployment, the battery is disconnected from the vehicle electri
cal system for safety reasons
c> & in Repair, care
and disposal of the airbags on page 125 .
Disconnecting the battery terminals
Some vehicle functions (power window regula
tors, for example) are lost if the battery termi nals are disconnected. These functions have to be
relearned after the battery terminals are con
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
energy consumption and maintains starting ca
pability over a longer pe riod
c> page 157.
Some of the conven ience functions may not oper
ate, such as the interior lights or the power seat
adjustment. The convenience functions will be
available again when you turn 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 be
cause more power is also consumed while start
ing, and the headlights, rear window defogger,
etc., are used more often.
Avo id unnecessary power consumption, particu
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
c> page 189. 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 ve
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 re
placed.
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the engine compart
ment . Before you check anything in the engine
compartment ,
read and heed all WARNINGS
c>,& ,
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.
A
Battery acid contains sulfuric acid. Al-
ways wear gloves and eye protection .
187

Check ing and F illing
@
No
- sp ark s
- flam es
- smoking.
£
When a bat tery is charg ed, it produc es
hydr og en gas which i s ex plo sive and
could c aus e pe rs onal injury .
®
Alwa ys keep the b atter y well out of reach
of chil dren.
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 fol
lowing WARN INGS :
- Always wea r eye protection. Do not let bat
te ry acid or any lead pa rticles 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 c an cause blindness and
severe bu rns.
- 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 wa
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 term inals with tools or oth
er metal objects. Th is wou ld cause the bat
tery to heat up very quickly, which could
lead to damage or explosion and personal
injury .
- When a battery is charged, it produces hy
drogen gas which is explosive and could
ca use personal injury.
- Always keep the battery well out of the reach of ch ildre n.
188
-
-Before wo rk is done on the electrical sys
tem, disconnect the negative gro und cable.
- Before performing any work on the e lectri
cal system, switch off the engine and ign i
tion as well as any electrical equ ipment . The
negat ive cab le on the battery must be dis
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 an ti-theft alarm system! Otherwise you
will set off the alarm.
- When disconnecting the battery, first dis
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 firs t 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-ou t bat
tery . It cou ld explode ! If a ba ttery has fro
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 bat ter ies which are damaged.
There is the danger of an exp losion! Always
replace a damaged battery .
A WARNING
Califo rnia Proposition 65 Warning :
- Ba tte ry posts, te rm inals and related acces
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 switched on or when the en
gine is running, otherwise, you will damage
electronic components in the electrical sys
tem .
- If your veh icle is go ing to stand for a long
period of time w ithout being driven, protect ..,.

.... N
c:i ::J CX)
.... I.Cl U"I
N I.Cl ......
the battery from "freez ing", otherwise it
will be damaged a nd will then have to be re
placed .
Battery charging
Starting the engine requires a well charged bat
tery.
Fi g. 1S 4 Engine co mpartme nt: Connectors fo r charger and
j u mpe r cables
Alwa ys read and heed all WARNINGS be low
¢ A and ¢ A in Working on the battery on
page 188.
.. Turn off the ignition and all e lectrical consum
ers.
.. Make s ure the area is well venti lated when yo u
charge the battery.
.. Open the engine hood
¢ page 177.
.. Open the cover on the posit ive pole ¢
fig. 154.
.. Connect the charger co nnectors accord ing to
the instructions to the
jump start bolt s. (Bolts
u nder the cove r= "posit ive", Bo lts with hex
head= ''negat ive").
.,. Only now pl ug the mains lead for the charging
equipment into the wall ou tlet and turn it on
¢ .,&. .
.. Make sure the ch arging rate is not over
30 amp s/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 fo r the charging equ ip-
me nt.
.. Close the cove r o n t he posit ive pole.
.. Close the hood
¢ page 177.
A discharged ba ttery can
fre eze at temperatures
of only 32 °F (0 °C) . A llow a frozen batte ry to
Checking and Filling
thaw completely before a ttempting to charge it
¢ & . However, we recommend not using a
thawed battery aga in beca use the battery casing
can be cracked due to ice formation and can leak
battery ac id .
Battery charging (Maximum charging rate of
30 amps /14 .8 V olt)
When charging at /ow voltages (e.g. w ith a t ric k
le charge r),
the battery cables do not have to be
disco nnected f irst . The battery caps should
not
be opened when charging a battery .
It is not necessa ry to remove the battery from
the luggage compartment.
Fa st charging the batt ery (cha rging rate
above 14 .8 Volt s)
For technical reasons do not use a battery charg
er that uses vo ltage greater than 14.8 Volts to
charge your veh icle's battery .
A WARNING
-
Charging a battery can be dange rous.
- Always follow the operating instructions
provided by t he battery cha rge r manufactur
er when charging yo ur battery .
- Never charge a frozen battery. It may ex
p lode because of gas trapped in the ice. Al
low a froze n battery to thaw out first .
- Do not reuse batteries which were frozen .
The batte ry hous ing may have c racked and
weakened when the battery froze .
- Charge the battery in a well ve ntilated area .
Keep away from open flame or electrical
spa rk. Do not smoke . Hydrogen gas generat
ed by the batte ry is explos ive.
- To reduce the danger of exp losion, never
connect or d isconnect charge r cables while
t he charger is ope ra ting.
- F ast charg ing a battery is d ange rous and
should only be at tempted by a competen t
technici an with the prope r equipmen t.
- Ba ttery a cid that may spill duri ng cha rging
should be washe d off w it h a so lution of
warm water and baking soda to neutra lize
the acid.
189

Wheels
"XL" "xl" "EXTRA LOAD" or "RF" I I I
on the sidewall.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated.
Rim diameter
means nominal diameter of the
bead seat . If you change your
wheel size, you w ill have to p ur
chase new tires to match the new rim diameter .
Rim size designation
means rim diameter and width.
Rim width
means nomina l distance between
rim flanges.
S idewall
means that portion of a tire be
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend
ed periods of time. The rat ings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 192.
You may not find
this information on all tires be
cause it is not requ ired by law.
196
The speed rating letter code,
where applicable, is molded on
the tire sidewall and ind icates the
maximum permissible road
speeds
¢ .&. in Winter tires on
page 206.
Tire pressure monitoring system*
means a system that detects
when one or mo re of a vehicle's
tires are underinflated and illum i
na tes a low tire pressure warning
te lltale .
Tread
means that portion of a tire that
comes into contact w ith the road .
Tread separation
means pulling away o f the tread
from the t ire carcass .
Treadwear indicators (TWI)
means the projections within the
principal grooves designed to give
a visua l indication of the deg rees
of wear of the tread. Se e
¢ page 200, Tread wear indica
tor
fo r more informa tion on
measu ring t ire wear .

different tire speeds. For this reason, in case of emergency, only
use a spare tire that has the same
circumference as the regular
tires.
&_ WARNING -
-Only use tire/rim combina tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident could result.
-For technical reasons, it is not
possible to use tires from oth
er vehicles - in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you
select have enough clearance
to the vehicle . Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif
ferent construction can differ
greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged and this can reduce driving
safety and increase the risk of
an accident.
Wheels
-Only use tires that are more
than 6 years old when abso lutely necessary and drive
carefully when doing so.
-Do not use run-flat tires on
your vehicle. Using them when
not permitted can lead to ve
hicle damage or accidents.
- If you install wheel covers on
the vehicle, make sure they al low enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 157 Ti re profi le: tread wear indica
tor
Tire wear
Check the tires regularly for wear .
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves,
rapid acceleration and heavy
braking increase tire wear. ..
199

Wheels
-Have an authorized Audi dealer or authorized Audi Service Facili
ty check the wheel alignment if
there is unusual wear .
-Have the wheels rebalanced if an
imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear more quickly.
Tread wear indicator
The original tires on your vehicle
have 1/16 inch (1.6 mm) high
wear indicators
c:::> fig. 157 run
ning across the tread. Marks on
the tire sidewall (for example
"TWI" or other symbols) indicate
the positions of the tread wear in
dicators.
The tires have reached the mini mum tread depth
l) when they
have worn down to the tread wear
indicators. Replace the tires with
new ones
c:::>,1i..
Wheel rotation
Rotating the wheels regularly is
recommended to ensure the tires
wear evenly . To rotate wheels, in
stall the wheels from the rear
1> Obey any applicable regulations in your
country.
200
axle on the front axle and vice
versa. This will allow the tires to
have approximately the same
length of service life.
For unidirectional tires, make
sure the tires are installed accord
ing to the running direction indi
cated on the tire sidewall
c:::> page 218.
Hidden damage
Damage to tires and rims can of
ten occur in locations that are
hidden. Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage .
Reduce your speed immediately .
Check the tires for damage. If no
damage is visible from the out
side, drive slowly and carefully to
the nearest authorized Audi deal
er or authorized Audi Service Fa
cility to have the vehicle inspect
ed.
WARNING
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety.
This can especially have a nega-
tive effect on handling, on the ,..