2009 AUDI S6 brake

___ C_ le_ a _ n_i_n ~g _ a_ n_ d __ p_r _o _t _e _c_ t_ i_o _n ___________________________________________ _
brake dust is also corrosive. If left on for too long, brake dust can
cause pitting.
Use on ly specia l
acid-free cleaners formulated for a lloy r ims . Safe
products are available at your Audi dealer. Never leave the cleaner
on the ri ms longer than specified on the label. If not rinsed of f
promptly, the acid contained in some c leaners can attack the
threads o n the wheel bo lts .
Never use abrasive or metal po lishing c leaning agents. If the protec ­
tive coating has been chipped, e.g . by kicked up road dirt, touch i t
up as soon as poss ible .
& WARNING
• Moisture and i ce on b rake s may affe ct b raking effi cien cy
~ page 26 5, "General information ". Te st the brake s carefully ea ch
t ime you wa sh the vehi cle .
• Always read and heed all WARNINGS and other information
~ pag e 282. •
Body cavity sealing
T he body cavity sealing does not nee d to be checked .
All body cavities which could be affected by corrosion have been
t horoughly pr otected a t the factory .
This sealing does not require any inspection or additional treat ­
ment . If any wax should seep out of the cavity when the ambient
temperature is high, it can be removed with a plastic scraper and a suitable solvent .
& WARNING
Solvents can be dangerous.
• Ben zine is fla mmab le and to xic . If you use be nzine fo r removing
the wax , keep sparks, f lame and lighted cigarettes away . Never
& W ARN ING (continued )
dump benz ine on the ground , into open streams or down sewage
dra in s.
• Be sure to observe all safety and env ironmental regulat ions .
Follow all in struction s on the cont ainer .
• Alway s read and heed all WARNINGS and other inform ation
~ page 282 .•
Chassis
Have the u nderc oating c hecked for dama ge from tim e to
time.
T he lower body shell of your Audi is also thoroughly protected
aga inst corrosion .
Any damage to the undercoat ing caused by road hazards shou ld be
repaired promptly.
& WARNING
Too much undercoating in the wrong place s can cau se a fire .
• Do not app ly addition al und ercoating or rustproofing on or
near the exhaust manifold , exhau st pipe s, catalytic converter or
he at shield s. While dr iving , the sub stance used for underco ating
could overhe at and cau se a fire .
• Alwa ys read and heed all WARNINGS and other info rm ation
=> page282 .•

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•
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced .
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage => &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake .
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment .
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm . The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open flames . Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever to "P"
(Park). .,
Vehicle care
I t •

--~C~h.!. e~ c~k ~in ~ g~ a~n ~d~ f~il ~li~ n~gL ___________________________________________ _
& WARNING (continued )
• Antifreeze is poi sonous. Alway s store antifreeze in its original
container and well out of the rea ch of children.
• If you drain the coolant , it must be caught and safely stored in
a proper container clea rly marked "poi son ".
0 Note
• Coo lant po llutes the env ironment and could cause an engine
fire . Excess coolant will be forced out through the pressure relief
valve in the cap when the engine becomes hot.
• If, in an emergency, on ly wa ter ca n be added, the correc t rati o
between water and antifreeze=>
page 307 must be restored as soon
as possible .
~ For the sake of the environment
Drained coolant should not be reused. Always dispose of used
co olant whi le observ ing all e nvir o nmen tal regula tions .•
Radiator fan
The radi ator fan s wit ches on automa tically by i tsel f.
The radiator fan is driven by t he engine v ia the V -belt. The v iscous
clutch regulates the speed of the fan according to the temperature
of the coo lant .
An aux iliary e lectric radiator fan* switches on and off depending on
c oo lant temperature and other vehicle opera tin g co ndi tions.
After you switch the engine off, the aux iliary fan can continue
running for up to 10 minutes -even with the ignition off. It can even
switc h on again later by itself=>&, if
• the temperature of the engine coolant rises due to the heat
bui ld-up fr om the eng ine in the engine c ompartmen t, or •
the engine compartment heats up because the vehicle is parked
in in tense s un ligh t.
& WARNING
• To reduce the ri sk of personal injury never touch the radiator
fan .
• The auxiliary e lectric fan is temperature controlled and can
switch on suddenly even when the engine is not running .
• The au xiliary radiator fan switches on automatic ally when the
engine coolant reaches a ce rtain temperature and will continue to
run until the coolant temperature d rops .•
Brake fluid
Checking brake fluid level
T he brak e fluid level can be checked wit h a quick glance.
F ig . 243 Engine
c o mp artment : B ra ke
fluid re servoir
Befo re you c heck anything in the e ngi ne compartme nt,
always read and heed all WARNINGS=> & in "Working in
t h e e ngin e com part ment" on
page 30 1. ~

Checkin g and fillin g Ill
--------------~-
•
-Read the brake fluid level from the brake fluid reservoir
~ fig. 243. 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 302.
The fluid level may drop slightly after some time due to the auto ­
matic 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 l ight (U.S. models:
BRAKE , Canadian models:
CCD> l will come on=> page 22 and=> page 30. Do not continue to
operate the vehicle . The complete brake syste m shou ld be thor ­
oughly checked by an authorized Audi dealer or other qualified
facility and the cause corrected. If the brake fluid level is too low, the
brake warning/indicator light will illuminate . Contact an authorized
Audi dea ler
immedi ately. •
Changing brake fluid
Have the brake fluid changed by an experienced techni ­
cian.
Brake fluid absorbs moisture from the air. If the water content in the
brake fluid is too high, corrosion in the brake system may result
after a period of time . The boiling po int of the brake fluid will also
decrease considerably and decrease braking performance.
T herefore, the brake fluid must be changed
ever y two yea rs. Always
use new brake fluid which conforms to Federa l Motor Veh ic le Stan­
dard "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 autho­
rized
Audi deal er. Your dealer has the co rrect tools, the right brake
fluid and the know-how to do this for you.
& WARNING
• Bra ke fluid i s poi sonou s. It m ust be stor ed only in the closed
or iginal container out of the reach of children!
• Brake f ailur e can result fr om old or in approp riat e bra ke fluid .
Ob serve the se pre cauti ons:
- Use o nly br ake fluid that me ets SAE specifi cation
J 1703 and
c onfo rm s t o Fed eral Mo to r V ehicle Standard 116 . Alway s check
w ith your auth oriz ed A udi de aler t o m ake sure you are usin g
the correct b rake flu id . The corre ct ty p e of brake flu id i s al so
indi cate d on the br ake fl uid r eservo ir .
- The brake f luid mu st be new . Heav y use of the brake s can
ca us e a va por lo ck if the brake fluid is left in the sy stem too
long. Thi s ca n seriou sly affect th e effic iency of the brake s as
well as your safe ty. T his co uld r esult i n an a ccide nt.
0 No te
Brake fluid wil l damage the paint of your vehicle .
'£> For the sake of the environm ent
Because of the problem of proper disposal of brake fluid as well as
the special too ls required and the necessary expertise, we recom ­
mend that you have the brake fluid changed by your authorized Audi
dea ler. •
Battery
General information
Under norm al 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 electrolyte level ._
Vehicle care I t •

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Tires and wheels
Tires
General notes
Tires may be the least appreciated and most abused parts
of a motor vehicle.
Tires may be the least appreciated and most abused parts of a
motor vehicle. Tires are, however, one of the most important parts
of a vehicle, particularly considering the comparative ly sma ll patch
of rubber on each tire that assures that all- important contact
between you, your vehicle and the road .
Maintaining the correct tire pressure, making sure that your vehicle
and its tires do not have to carry more weight than they can safely
handle, avoiding damage from road hazards and regu lar ly
inspecting tires for damage inc luding cuts , slashes irregular wear
and overa ll condition are the most important things that you can do
to help avoid sudden tire failure including tread separation and
b lowouts .
Avoiding dama ge
If you have to drive over a curb or similar obstacle, drive very slow ly
and as close as possible at a right angle to the curb.
A lways keep chemica ls includ ing grease, oil, gasoline and brake
f luid off the tires.
I nspec t the tires regularly for damage (cuts, cracks or blis ters, etc.l.
Remove any foreign bodies embedded in the treads.
Storing tires
Mark tires when you remove them to indicate the direction of rota ­
tion . This ensu res you to be ab le to mount them correctly when you
reinstal l them. When removed, the wheels or tires shou
ld be stored in a coo l, dry
and preferably dark place.
St ore t ires in a vertical posit ion if they a re not mounted on rims, in
a horizontal position if they are mounted on rims.
New tire s
New tires have to be broken in~&.
The tread dep th of new tires may va ry, according to the type and
make of tire and the tread pattern.
Hidden d ama ge
Damage to tires and rims is often not readily visible. If you notice
unusua l vibration or the vehicle pul ls to one side, this may indicate
that one of the tires has been damaged . The tires must be checked
immed iately by an authorized Audi dealer or qualified workshop .
Unidire ction al tir es
A unidirectio nal tire can be iden tif ied by arrows on the s idewa ll, that
point in the direction the tire is designed to rotate. You must follow
the specified direction of ro tation . This is necessary so that these
tires can deve lop their optimum characteristics regarding grip, road
noise, wear and hydroplaning resistance . For more information
~ page 349.
in. WARNING
Ne w tire s or tire s that are old , worn or damaged cann ot pro vide
m aximum cont rol and braking ability.
• New tire s tend to be slippe ry and m ust be broken in . To redu ce
the risk of losing control, a colli sion and seriou s per sonal injurie s,
drive with speci al care for t he fi rst 350 m ile s ( 560 km l.
• Driving with worn or damaged t ire s can lead to lo ss of co ntrol ,
s udd en tire failure , in clu ding a blowout a nd sudden deflation , .,,_
Vehicle care
I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
& WARNING (continued)
crashes and serious personal injuries . Have worn or damaged tires
replaced immediately.
• Tires age even if they are not being used and can fail suddenly,
especially at high speeds. Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
low speed.
Glossary of tire and loading terminology
Accessory weight
means the combined weight (in excess of those standard items
which may be replaced) of automatic transmission, power steering,
power brakes, power windows, power seats, radio, and heater, to
the extent that these items are available as factory-installed equip­
ment (whether installed or not).
Aspect ratio means the ratio of the height to the width of the tire in percent.
Numb ers of 55 or lower indicate a low sidewall for improved
steering response and better overall handling on dry pavement.
Bead
means the part of the tire that is made of steel wires, wrapped or reinforced by ply cords and that is shaped to fit the rim.
Bead separation means a breakdown of the bond between components in the bead.
Cord
means the strands forming the plies in the tire.
& WARNING (continued)
• Never mount used tires on your vehicle if you are not sure of
their "previous history." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control.
• If you notice unusual vibration or if the vehicle pulls to one side
when driving, always stop as soon as it is safe to do so and check
the wheels and tires for damage . •
Cold tire inflation pressure
means the tire pressure recommended by the vehicle manufacturer
for a tire of a designated size that has not been driven for more than
a couple of miles (kilometers) at low speeds in the three hour period
before the tire pressure is measured or adjusted .
Curb weight means the weight of a motor vehicle with standard equipment
including the maximum capacity of fuel, oil, and coolant, air condi­
tioning and additional weight of optional equipment.
Extra load tire
means a tire designed to operate at higher loads and at higher infla ­
tion pressures than the corresponding standard tire . Extra load tires
my be identified as "XL",
"xi", "EXTRA LOAD", or "RF" on the side ­
wall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capacity of a single axle system, measured
at the tire -ground interfaces .
Gross Vehicle Weight Rating ("GVWR"l
means the maximum total loaded weight of the vehicle.

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Groove
means the space between two adjacent tread ribs.
L oad ra ting (code)
means the maximum load that a tire is rated to carry for a given
inflation pressure. You may not find this information on all tires
because it is not required by law.
M ax im um l oad ra tin g
means the load rating for a tire at the maximum permissib le infla­
tion pressure for that tire.
Ma ximum l oaded v ehi cle weigh t
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehic le capacity weight, and
(ct) Production options weight
M ax im um (p er mi ssibl e) infl ati on pr essur e
means the maximum cold inflation pressure to wh ich a tire may be
inflated. Also ca lled "maximum inflation pressure."
Normal occ upa nt wei ght
means 150 lbs. (68 kilograms) times the number of occupants
seated in the vehicle up to the to tal seating capacity of your vehicle.
O ccupant di stributi on
means distribution of occupants in a vehicle .
Outer di am eter
means the overall diameter of an inflated new tire.
O ve rall wi dth
means the linear distance between the exteriors of the sidewa lls of
an inflated tire, includ ing elevations due to labeling, decorations, or
protective bands or ribs.
Pl y
means a layer of rubber -coated para lle l cords.
P rodu ction opt io ns wei ght
means the combined weight of those installed regular production
options weighing over 5 lbs . (2.3 kg) in excess of those standard
i t ems wh ich they replace, not previously considered in curb weigh t
or accessory weight, including heavy duty brakes, ride levelers, roof
rack, heavy duty battery, and specia l trim .
Radi al p ly tire
means a pneumatic tire in which the ply cords that extend to the
beads are laid at substantially 90 degrees to the centerline of the
tread .
Reco mm ended infl ati on pr essu re
see => page 318, "Cold tire inflation pressure".
Rein force d tir e
means a tire designed to operate at higher loads and at higher infla ­
tion pressures than the corresponding standard tire. Reinforced
t ires my be identified as "XL", "xi", "EXTRA LOAD", or "RF" on the
sidewall.
R im
means a metal support for a tire or a tire and tube assembly upon
wh ich the t ire beads are seated.
Rim di amet er
means nominal diameter of the bead seat. If you change your whee l
size, you wi ll have to purchase new tires to match the new rim diam ­
eter .
Rim siz e de sig nation
means rim diameter and width.
Rim wid th
means nominal distance between rim flanges.
Vehicle care I t •

Tires and wheels -
----------------
•
The correct tire pressure for the spare wheel is located on a label on
the driver's side 8 -pillar.
Because technical changes may be made to vehicle equipment
during the mode l year, always compare the tire size designation on
the tire pressure label on your vehicle with the tires on your vehicle.
Make sure that the tire size information on the vehicle label is the
same as the size of the tires on the vehicle. This is especially impor­
tant if the vehicle belongs to someone else or you bought the
vehic le with different rims/tires or you bought the vehicle as a previ ­
ously owned vehicle.
Remember, your safety and that of your passengers also depends
on making sure that load l imits are not exceeded. Vehicle load
includes everybody and everything in and on the vehicle . These load
limits are techn ically referred to as the vehicle's Gross Veh icle
Weight Rating ("GVWR"l. The Gross Axle Weight Rating ("GAWR"l is
the maximum load that can be applied at each of the vehicle's two
axles. The Gross Vehicle Weight Rating and the Gross Axle Weight
Rating are listed on the safety compliance sticker label located on
the driver's side 8-pillar. The tire pressure label on your Audi lists
the maximum comb ined weight of all of the occupants and luggage
or other cargo that the vehicle can carry. For the location of the tire
pressure label =>
page 327, fig. 247.
& WARNING
Overloading a vehicle can cause loss of vehicle control, a crash or
other accident , serious personal injury, and even death .
• Carrying more weight than your vehicle was designed to carry
will prevent the vehicle from handling properly and increase the
risk of a loss of vehicle control.
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehicle within a safe distance.
• Tires on a vehicle that has been overloaded can fail suddenly
causing loss of control and a crash.
& WARNING (continued)
• Always make sure that the total load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
vehicle's Gross Vehicle Weight Rating .
& WARNING
• Incorrect tire pressures and/or underinflation can lead to a
serious or fatal accident.
• Incorrect tire pressures and/or underinflation cause increased
tire wear and can affect the handling of the vehicle.
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control. •
Checking tire pressure
The correct tire pressure for the tires originally installed
on your vehicle is listed on the tire pressure label located
on driver's side 8-pillar.
The recommended tire pressures are on the tire pressure label and
in the table=>
page 327, "Cold tire inflation pressure". This means
that the pressure must be checked and adjusted when the tire has
not been driven for more than a couple of mi les (kilometers) at low
speeds during the previous three hours. Air in the tires expands
when the tire heats up as a result of internal friction as it flexes in
use. The tire pressure is higher when the tire has warmed up than
when it is "cold ."
It is the inflation pressure in a "cold" tire that counts. Therefore, you
should never let air out of a warm tire to match "Cold tire inf lation
pressure" recommendations=>
page 327. The tires wou ld then be
underinflated and could fail suddenly. .,_
Vehicle care I t •