service AUDI S8 2009 User Guide

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Warm and cold
Climate controls
Description
The air conditioner is fully automatic and is designed to
maintain a comfortable and uniform climate inside the
vehicle.
We recommend the follow ing settings:
- Set the temperature to 75 °F (+23 °C).
- Press the !AUTO
I button.
With this setting, you attain maximum comfort in the least amount
of time. Change this setting, as desired, to meet your personal needs.
The climate controls are a combination of heating, ventilation and cooling systems, which automatically reduce humidity and cool the
air inside your vehicle.
The air temperature, air flow and air distribution are automatically
regulated to achieve and maintain the desired passenger compart­
ment temperature as quickly as possible.
The system automatically compensates for changes in outside
temperature and for the intensity of the sunlight entering the
vehicle. We recommend you use the
Automatic mode=> page 117
for year-round comfort.
Please note the following:
Turn on the air conditioner to reduce humidity in the vehicle. This also prevents the windows from fogging up.
When the outside temperature is high and the air is very humid,
condensation from the evaporator may drip under the vehicle. This
is normal and does not indicate a leak. If the outside temperature is low,
the fan normally only switches to
a higher speed once the engine coolant has warmed up sufficiently.
The air conditioner temporarily switches off when you drive off from
a standstill using full throttle to save engine power.
The compressor also switches off if the coolant temperature is too
high, so that the engine can be adequately cooled under extreme
loads.
Air pollutants filter
The air pollutants filter (a combined particle filter and activated
charcoal filter) reduces or prevents outside air pollution (dust, or
pollen) from entering the vehicle.
The air pollutants filter must be changed at the intervals specified
in your Warranty
& Maintenance booklet, so that the air conditioner
can properly work.
If you drive your vehicle in an area with high air pollution, the filter
may need to be changed more frequently than specified in your
Audi Warranty
& Maintenance booklet. If in doubt, ask your autho­
rized Audi Service Advisor for advice.
Key coded settings
The air conditioner settings selected are automatically stored and
assigned to the key being used. When the vehicle is started, the air
conditioner automatically selects the settings assigned to that key.
This way every driver will maintain his/her own personal settings
and does not have to reset them manually.
If a different driver uses your key and changes the air conditioner
settings, the latest adjustments will erase and replace the settings
you have stored.
Energy management
To prevent the battery from being discharged and to restore the
balance of energy, components which require large amounts of

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Important things to do before driving
Safety is everybody's job! Vehicle and occupant safety
always depends on the informed and careful driver.
For your safety and the safety of your passengers, before
driving always:
-Make sure that all lights and signals are operat ing
correctly.
- Make sure that the tire pressure is correct.
- Make sure that all windows are clean and afford good
visibility to the outside.
- Secure all luggage and other items carefully~
page 109.
-Make sure that noth ing can interfere w ith the pedals.
- Adjust front seat, head restraint and mirrors correctly for your height .
- Instruct passengers to adjust the head restraints
according to their height.
- Make sure to use the right ch ild restraint correctly to
protect children ~
page 245, "Child Safety ".
- Sit properly in your seat and make sure that your passen ­
gers do the same~
page 86, "General recommenda ­
tions".
- Fasten your safety belt and wear it p roperly. Also instruct
your passengers to fasten the ir safety belts properly
~ page 217. •
Controls and equip­
ment Safety first
Vehicle operation
What impairs driving safety?
Safe driving is directly related to the condition of the
vehicle, the driver as well as the driver's ability to concen­
trate on the road without being distracted.
The driver is responsible for the safety of the vehicle and all
of its occupants. If your ability to drive is impaired, safety
risks for everybody in the vehicle increase and you also
become a hazard to everyone else on the road ~& .There ­
fore:
Do not let yourself be distracted by passengers or by
using a cellular telephone .
NEVER drive when your driving ability is impaired (by
medications, alcohol, drugs, etc.).
- Observe all traffic laws, rules of the road and speed limits
and plain common sense .
- ALWAYS adjust your speed to road, traffic and weather
conditions.
- Take frequent breaks on long trips. Do not drive for more
than two hours at a stretch.
- Do NOT drive when you are tired, under pressure or when
you are stressed .
& WARNING
Impaired driving safety increases the risk of serious personal
injury and death whenever a vehicle is being used. •
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& WARNING (continued)
• Always adjust the driver's seat and the steering wheel so that
there are at least 4 inches (10 cm) between the knees and the
lower part of the instrument panel.
• Always hold the steering wheel on the outside of the steering
wheel rim with your hands at the 9 o'clock and 3 o'clock positions
to help reduce the risk of personal injury if the driver's airbag inflates .
• Never hold the steering wheel at the 12 o'clock position or with
your hands at other positions inside the steering wheel rim or on
the steering wheel hub. Holding the steering wheel the wrong way
can cause serious injuries to the hands, arms and head if the
driver's airbag inflates
• Pointing the steering wheel toward your face decreases the
ability of the supplemental driver's airbag to protect you in a colli­
sion .
• Always sit in an upright position and never lean against or
place any part of your body too close to the area where the airbags
are located.
• Before driving, always adjust the front seats and head
restraints properly and make sure that all passengers are properly
restrained .
• Never adjust the seats while the vehicle is moving. Your seat
may move unexpectedly and you could lose control of the vehicle.
• Never drive with the backrest reclined or tilted far back! The
farther the backrests are tilted back, the greater the risk of injury due to incorrect positioning of the safety belt and improper
seating position.
• Children must always ride in child seats
=> page 245. Special
precautions apply when installing a child seat on the front
passenger seat
=> page 220. •
Controls and equip­
ment Safety first
Vehicle operation
Proper seating position for the front
passenger
The proper front passenger seating position is important
for safe, relaxed driving.
For your own safety and to reduce the ris k of injury in the
event of an accident, we recommend that you adjust the
seat for the front passenger to the following pos ition:
- Move the front passenger seat back as far as possible.
There must be a minimum of 10 inches (25 cm) between
the breastbone and the instrument panel =>
&.
- Adjust the angle of the seatback so that it is in an upright
position and your back comes in full contact with it
whenever the vehicle is moving.
- Adjust the head restraint so that the upper edge is as
even with the top of your head as possible but not lower
than eye level and so that it is as close to the back of your
head as possible =>
page 205.
-Keep both feet flat on the floor in front of the front
passenger seat.
- Fasten and wear safety belts correctly=:>
page 215.
For detailed information on how to adjust the front passenger's
seat, see => page 86.
& WARNING
Front seat passengers who are unbelted, out of position or too
close to the airbag can be seriously injured or killed by the airbag
as it unfolds. To help reduce the risk of serious personal injury : .,
Vehicle care Do-it-yourself service Technical data

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Proper adjustment of head restraints
Correctly adjusted head restraints are an important part
of your vehicle's occupant restraint system and can help
to reduce the risk of injuries in accident situations.
Fig. 220 Correctly
adjusted head restraint
viewed from the side
The head restraints must be correctly adjusted to achieve
the best protection.
-Adjust the head restraint so that the upper edge of the
restraint is level with the top of your head, but no lower
than eye level and so it is as close to the back of your
head as possible ~ fig. 220.
Adjusting head restraints=> page 91.
& WARNING
Driving without head restraints or with improperly adjusted head
restraints increases the risk of serious injuries in a collision . To
help reduce the risk of injury :
• Always drive with the head restraints in place and properly
adjusted.
• Every person in the vehicle must have a properly adjusted head
restraint.
Controls and equip­ ment Safety first Vehicle operation
& WARNING (continued)
•
Always make sure each person in the vehicle properly adjusts
their head restraint. Each head restraint must be adjusted
according to occupants' size so that the upper edge is as even
with the top of the person's head, but no lower than eye level and
so it is as close to the back of to the head as possible .
• Never attempt to adjust head restraint while driving. If you
have driven off and must adjust the driver headrest for any reason,
first stop the vehicle safely before attempting to adjust the head
restraint.
• Children must always be properly restrained in a child restraint
that is appropriate for their age and size
=> page 245. •
Examples of improper seating positions
The occupant restraint system can only reduce the risk of
injury if vehicle occupants ore properly seated.
Improper seating positions can cause serious injury or
death . Safety belts can only work when they are properly
positioned on the body. Improper seating positions reduce
the effectiveness of safety belts and will even increase the
risk of injury and death by moving the safety belt to critical
areas of the body. Improper seating positions also increase
the risk of serious injury and death when an airbag deploys
and strikes an occupant who is not in the proper seating
position. A driver is responsible for the safety of all vehicle
occupants and especially for children. Therefore:
- Never allow anyone to assume an incorrect seating posi­
tion when the vehicle is being used~& .
The following bulletins list only some sample positions that will
increase the risk of serious injury and death. Our hope is that these .,_
Vehicle care Do-it-yourself service Technical data

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& WARNING
Pedals that cannot move freely can cause loss of vehicle control
and increase the risk of serious injury.
• Never place any objects in the driver's footwell . An object could
get into the pedal area and interfere with pedal function. In case
of sudden braking or an accident, you would not be able to brake
or accelerate!
• Always make sure that nothing can fall or move into the
driver's footwell. •
Floor mats on the driver side
Always use floor mats that can be securely attached to
the floor mat fasteners and do not interfere with the free
movement of the pedals.
- Make sure that the floor mats are properly secured and
cannot move and interfere with the pedals =>& .
Use only floor mats that leave the pedal area unobstructed and that
are firmly secured so that they cannot slip out of position . You can
obtain suitable floor mats from your authorized Audi Dealer.
Floor mat fasteners are installed in your Audi.
Floor mats used in your vehicle must be attached to these fasteners .
Properly securing the floor mats will prevent them from sliding into
positions that could interfere with the pedals or impair safe opera­
tion of your vehicle in other ways.
& WARNING
Pedals that cannot move freely can result in a loss of vehicle
control and increase the risk of serious personal injury.
• Always make sure that floor mats are properly secured.
Controls and equip­ ment Safety first Vehicle operation
& WARNING
(continued)
• Never place or install floor mats or other floor coverings in the
vehicle that cannot be properly secured in place to prevent them
from slipping and interfering with the pedals or the ability to
control the vehicle.
• Never place or install floor mats or other floor coverings on top
of already installed floor mats. Additional floor mats and other
coverings will reduce the size of the pedal area and interfere with
the pedals.
• Always properly reinstall and secure floor mats that have been
taken out for cleaning.
• Always make sure that objects cannot fall into the driver foot­
well while the vehicle is moving. Objects can become trapped
under the brake pedal and accelerator pedal causing a loss of
vehicle control. •
Stowing luggage
Loading the luggage compartment
All luggage and other objects must be properly stowed
and secured in the luggage compartment.
Loose items in the luggage compartment can shift
suddenly, changing vehicle handling characteristics. Loose
items can also increase the risk of serious personal injury in
a sudden vehicle maneuver or in a collision.
- Distribute the load evenly in the luggage compartment.
- Always place and properly secure heavy items in the
luggage compartment as far forward as possible.
- Secure luggage using the tie-downs provided
=>
page 100, "Luggage compartment ".
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Tie-downs
The lugg age compa rtme nt is eq uippe d with f our tie ­
downs to secure luggage and othe r items .
Use the tie -downs to secure your cargo properly~ page 207,
"Loadi ng the luggage compartme nt".
I n a col lision, the laws of physics mean that even smaller items that
are l oos e in the veh ic le will become heavy missiles t hat can cause
serious injury. Items in the vehicle possess energy wh ich vary with
vehicle speed and the we ight of the item . Veh ic le spee d is the m ost
significant factor.
F or example, in a frontal co llision at a speed of 30 mph ( 48 km/h),
th e for ces act ing on a 10 -lb (4 .5 kg) o bject are about 20 tim es t he
normal weight of the item. This means that the weight of the item
w ould s udde nly be a bout 2 00 lb s. (90 kg). Yo u ca n imagi ne th e inju ­
ries that a 200 lbs. (90 k g) item flying free ly throu gh the pass enger
c o mp art ment co uld cause in a co llision lik e this.
& WARNING
Weak , damaged or improper straps used to secure items to tie ­
downs can fa il during hard braking or in a collision and cause
serious personal injury.
• Always use suitable mounting straps and properly secure
items to the tie -down s in the luggage compartment to help
prevent items from shifting or flying forward as dangerous
missiles .•
Reporting Safety Defects
Applicable to U.S.A.
If you believe that your vehicle has a defect
which could cause a crash or could cause
Controls and equip­ ment Safety first Vehicle operation
injury or death
, you should immediately inform
the National Highway Traffic Safety Adminis ­
tration (NHTSA) in addition to notifying Audi of
America , Inc.
If NHTSA receive s similar complaints , it may
open an investigation, and if it finds that a
safety defects exists in a group of vehicles , it
may order a recall and remedy campaign.
However , NHTSA cannot become involved in
individual problems between you, your dealer,
or Audi of America, Inc.
To contact NHTSA , you may call the Vehicle
Safety Hotline toll -free at:
Tel.: 1-888 -327-4236 (TTY: 1-800-424-9153)
or write to:
Admini strator
NHTSA 1200 New Jersey Avenue, SE
Washington, D.C. 20590
You can also obtain other information about
motor vehicle safety from:
http:/ /www.safercar.gov
Vehicle care Do-it-yourself service Technical data

Safety belts -----------------=------
Safety belts
General notes
Always wear safety belts!
Wearing safety belts correctly saves lives!
This chapter explains why safety belts are necessary, how
they work and how to adjust and wear them correctly.
- Read all the information that follows and heed all of the
instructions and WARNINGS.
& WARNING
Not wearing safety belts or wearing them improperly increases
the risk of serious personal injury and death.
• Safety belts are the single most effective means available to
reduce the risk of serious injury and death in automobile acci­
dents. For your protection and that of your passengers, always
correctly wear safety belts when the vehicle is moving.
• Pregnant women, injured, or physically impaired persons must
also use safety belts . Like all vehicle occupants, they are more
likely to be seriously injured if they do not wear safety belts. The
best way to protect a fetus is to protect the mother -throughout
the entire pregnancy. •
Number of seats
Your Audi has a total of five seating positions: two in the front and
three in the rear . Vehicles with power individual rear seats* have
seating for four: two in the front and two in the rear. Each seating
position has a safety belt.
Controls and equip­ ment Safety first
Vehicle operation
& WARNING
Not wearing safety belts or wearing them improperly increases
the risk of serious personal injury and death.
• Never strap more than one person, including small children,
into any belt. It is especially dangerous to place a safety belt over
a child sitting on your lap.
• Never let more people ride in the vehicle than there are safety
belts available.
• Be sure everyone riding in the vehicle is properly restrained
with a separate safety belt or child restraint. •
Safety belt warning light ~
Your vehicle has a warning system for the driver and front
seat passenger to remind you about the importance of
buck/ i ng-u p.
Before driving off, always:
Fig. 221 Safety belt
warning light in the
instrument cluster -
enlarged
- Fasten your safety belt and make sure you are wearing it
properly.
1J,,
Vehicle care Do-it-yourself service Technical data

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Adjusting safety belt height
Use the safety belt height adjustment to change belt posi ­
tion on the shoulder.
Fig . 231 Adjusting
shoulder belt height
The safety belt height adjustors for the front seats can be
used to adjust the height of the shoulder portion of the
safety belt so that it is positioned correctly.
- Push the latch=:, fig. 231 up or down so that the shoulder
portion of the safety belt is positioned nearly midway
over the shoulder =:, & in "Safety belt position" on
page 216.
& WARNING
Always read and heed all WARNINGS and other important informa­
tion
=> page 214. •
Improperly worn safety belts
Incorrectly positioned safety belts can cause severe inju­
ries.
Wearing safety belts improperly can cause serious injury or
death. Safety belts can only work when they are correctly positioned on the body. Improper seating
positions reduce
the effectiveness of safety belts and will even increase the
risk of injury and death by moving the safety belt to critical
areas of the body . Improper seating positions also increase
the risk of serious injury and death when an airbag deploys
and strikes an occupant who is not in the correct seating
position. A driver is responsible for the safety of all vehicle
occupants and especially for children. Therefore:
- Never permit anyone to assume an incorrect sitting posi­
tion in the vehicle while traveling=:,& .
& WARNING
Improperly worn safety belts increase the risk of serious personal
injury and death whenever a vehicle is being used.
• Always make sure that all vehicle occupants are correctly
restrained and stay in a correct seating position whenever the
vehicle is being used.
• Always read and heed all WARNINGS and other important infor­
mation
=> page 214. •
Safety belt pretensioners
How safety belt pretensloners work
In front, side and rear-end collisions above a particular
severity, safety belts are tensioned automatically.
The safety belts are equipped with safety belt pretensioners . The
system is activated by sensors in front, side and rea r-end collisions
of great severity . This tightens th e belt and takes up belt slack=>
&
in "Service and disposal of safety belt pretensioner" on page 219.
Taking up the slack helps to reduce forward occupan t movement
during a collision. _.,

_______________________________________________ S_a _f _e _t -=-y _ b_ e_lt _s __ ffllll
[ i ] Tip s
The safety be lt pretensioner can on ly be activated once.
• I n minor frontal and side collisions, in rear -end coll isions, in a
rollover and in accidents involving very litt le impact force, the safety
belt pretensioner are not activated .
• When the safety be lt pretensioner is activated, a fine dust is
released . This is normal and is not caused by a fire in the vehicle.
• T he relevant safety requirements must be observed when the
vehic le or componen ts of the system are scrapped . A qua lified deal ­
ership is familiar with these regulations and wil l be p leased to pass
on the information to you .
• Be sure to observe all safety, environmental and other regula ­
tions if the veh ic le or individual parts of the system, particu larly the
safety belt or airbag, are to be disposed . We recommend you have
your au thorized Audi dea ler perform this service fo r you .•
Service and disposal of safety belt
pretensioner
The safety bel t pretensio ners are parts of the safety be lts on your
Audi . Installing, removing, servicing or repairing of belt preten ­
sioners can damage the safe ty be lt system and preve nt it from
working correctly in a collision .
There are some important things you have to know to make su re
that the effectiveness o f the system w ill not be impaired and that
discarded components do not cause inju ry or po llute the environ ­
ment.
& WARNING
Improper car e, s ervicing and repair pro cedures can increa se the
ri sk of personal injury and death by preventing a safety belt
p ret ension er from activating when needed or activating it unex ­
pectedly :
Controls and equip­
ment Safety first
Vehicle operation
& WAR N ING (continued )
• The belt pretens ioner system can be activated only once. If belt
preten sioner s ha ve bee n acti vated , the sy ste m mu st be replaced .
• Never repair , adjust , or change any part s of the safety belt
s y stem .
• Safety belt systems including safety belt preten sioner s ca nnot
be repai red. Speci al pro ced ures a re required for r emoval , in stalla ­
tion and di sposal of this system .
• For any work on the safety belt system , we str ong ly re com ­
mend that you see your authorized Audi dealer or qualified te chni ­
ci an who ha s an Audi approved repa ir m anual , train ing and spe cial
equipment nece ssary .
~ For the sake of the environment
Undeployed airbag modu les and pretensioners might be c lassif ied
as Pe rchlo rate Material -special handling may apply, see
www .dtsc.ca .gov /hazardouswaste/perchlorate . When the vehicle or
parts of the restraint system including airbag modules safety be lts
with pretensioners are scrapped, all applicable laws and regu la ­
t ions must be observed . Your authorized Audi dealer is familiar with
these requirements and we recommend that you have your dea ler
perfor m this service for you .•
Vehicle care Do-it-yourself service Technical data

Airbag syst em -----------------=~-
repair costs or even the lack of vehicle damage is not necessari ly an
indication of whether an airbag should inflate or not.
Since the circumstances will vary considerably between one colli­
sion and another, it is not possible to define a range of vehicle
speeds that w ill cover every possible kind and angle of impact that
will a lways trigger the airbags . Important factors inc lude, for
exa mple, the nature (hard or so ft) of the object which the car h its,
the angle of impact, vehicle speed, etc. The front airbags will also
n ot inflate in side or rear collisions, or in roll -overs .
Al way s rem ember : Airbags wi ll deploy only once, and on ly in certain
kinds of coll isions . Your safety belts are always there to offer protec­
tion in those situat ions in wh ich airbags are not supposed to deploy,
or when they have already deployed; for example, when your vehic le
strikes or is struck by a nother vehicle a fter the first collision.
T his is just one of the reasons why an airbag is a supplementary
restraint and is not a substitute for a sa fety be lt. The airbag system
works most effectively when used with the safety be lts. Therefore ,
always prope rly wea r your safety belt s => page 211 .
& WARNING
Sitting too clo se to the steering wheel or in strument panel will
de crease the effect ivene ss of the airbags and will incr ease the risk
of personal injury in a collision.
• Never sit closer than 10 in ches (25 cm) to the steering wheel or
in strument panel.
• If you c annot sit more than 10 in ches (25 cm ) from the steering
wheel , inve stiga te whether adaptive equipment may be available
to help you reach the pedal s and in crease your se ating dist ance
from the steering wheel.
• If you are unrestra ined , leaning forward , sittin g side ways or out
of position in any way , your risk of injury i s much higher .
• You will also receive serious injur ies and could even be killed if
you are up again st the airba g or too clo se to it when it infl ates -
ev en with an Advanced Airbag .
Controls and equip­ ment Safety first
Vehicle operation
& WAR N IN G ( continued )
• To reduce the ri sk of injury when an airbag inflate s, alw ays
wear safety belt s prope rly~
page 21 5, "S afet y belt s".
• Always make certain that ch ildren age 12 or younger alway s
ride in the rear seat. If children are not p rope rly re str ained , they
may be severely injured or killed when an airbag inflate s.
• Never let children ride unre str ained or impr operly rest rained in
the vehicl e. Adju st the front seat s pr operly .
• Never ride with the b ackrest r eclined .
• Alway s sit a s far as possible from the steering wheel or the
instrument p anel
~ pag e 202.
• Alway s sit upright with your back again st the backre st of your
seat .
• Ne ver pla ce your feet on the instrument panel or on the seat .
Always keep both feet on the floor in front of the seat to help
prevent seriou s injurie s to the leg s and hips if the airbag inflate s.
• Nev er r ecline th e front passenger 's seat to transpo rt obje cts .
Item s can al so mo ve into the area of the side a irbag or the front
airbag during braking or in a sudden m aneuver . Obje cts near the
a irbags can become pro je ctile s and cau se injury when an airbag
inflates .
& WARNING
Airbags that have deployed in a crash must be repla ced.
• U se only original equipment airbags approved by Audi and
in stalled by a trained technician who ha s the neces sary tool s and
diagnostic equipment to properly r epla ce any airb ag in your
vehicle and as sure sy stem effectivenes s in a crash .
• Never perm it salvag ed or re cy cled airb ag s to be i nstall ed in
your vehicle. •
Vehicle care Do-it-yourself service Technical data