2009 AUDI S8 ECU

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If necessary, retighten the mountings and check the entire system
from time to time.
• After mounting a roof rack system, or when you transport
objects on the roof of your vehicle, the height of the vehicle is natu­
rally increased . Be careful when driving under low bridges or in
parking garages for examp le. This cou ld cause damage to the load
and even the vehicle itself. •
Mounting locations
Safe installation of a roof rack requires that the rack
supports are m ounted between the small arrows marked
inside the door frames on all four doors .
Mounting
Fig. 109 Front and r ear
ma rkings
Th e roof r ack sy stem mu st be in sta lled exactly according to th e
i n struct ion s pr ovid ed .
Mount the roof racks suppo rts in the side roof moldings. Make sure
to position the supports on
all four doors between the points
marked by small arrows~ fig . 109. The markings can only be seen
when the doors are open .•
Loading the roof rack
Always distribute loads evenly. Make sure anything on the
r o of rack is securely tied down .
Always distribute the loads on the roof rack evenly.
- Always attach items to the roof rack securely before you
drive off.
T he maximum permissible roo f weight is 220 lb 1100 kg ). The roof
we ight is made up o f the weight of the roo f rack system and the
weight of the object being transported .
When using a roof rack system which has a lower load carrying
capacity , you must not use up the total maximum permissible load
carrying capacity specified above . Instead, you should load the roof
r ack system only to the maximum capacity specified by the manu ­
facturer of the roof rack system .
& WARNING
Weak, damag ed or improper straps u sed to secur e item s to the
roof rack can fail during hard b rak ing o r in a colli sion and c ause
s eriou s per son al injury .
• Make sure the roof ra ck i s in stalled exactly as s pecifi ed abo ve
~ page 104 .
• Alway s use suitable m ounting st rap s for se c uring it ems t o the
r o of ra ck to h elp prevent ite ms from shifting or flying for ward.
• Items on th e ro of rack must alw ays be se curely m ou nted .
• The u se of a roof r ack can n egatively affect th e way a v ehicle
ha nd les . C arg o th at is large , heav y, bulky , long or fl at w ill h ave a
greater ne gative influence on the vehicle' s aerodyn amics, center
of grav it y and o verall h andli ng. Al way s dri ve slowl y, avoi d s udd en
braking and maneuver s when transp ort ing carg o on the roof of
y our vehicle . .,_

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T he selector lever must be in Nor P. If one of the driving positions
is engaged a safety switch w ill preven t the eng ine from being
started. See also=>
page 130.
Before you move the selector lever from the P position, you must
a lways apply the brake pedal before and while depressing the
button in the hand le of the se lector lever .
_& WARNING
• Unintended v ehicle movement c an cause serious injury .
- When the selector lever i s in a driving po sition , the vehicle
may creep, even at idle speed . Therefore do not release the
parking brake or foot brake until you are ready to move ,
be cau se power is tran smitted to the wheel s as soon as a
driving po sition i s engaged.
- Do not accelerate while selecting a driving pos ition . At this
time the engine must be at idle speed so that undue stress is
not placed on the clut che s in the t ransmission .
-Remember : - even when stopped briefly with the automatic
transmi ssion in "D" or "R ", engine po wer is being tr ansmitted
to the wheels. Your vehicle could "creep " forward or ba ckward .
When stopped , keep the brake pedal fully depres sed and u se
the parking brake if ne ces sary to keep the vehicle from rolling.
• If the selecto r leve r is unintentionally mo ved into N whi le you
are dr iving, take your foot off the accelerator pedal and wait for
the eng ine to return to idle speed before sele cting a dr iving posi ­
tion .
• Never shift into "R " or "P " when the ve hicle is in motion .
• Never get out of the driver 's seat when the eng ine i s running .
• If you must get out of the vehicle , move the selector lever
s ecurely into the P po sition and apply the park ing brake firmly.
• If the engine must remain running , never have any driving po si­
tion engaged when che cking under the hood . Make sure the
selector lever has securely engaged and is locked in "P" with the
p ark ing br ake firmly set =>
page 301 , "E n gine compart ment ".
Controls and equip ­
ment
& W ARNING (continued )
Otherwise , any in crease in engine speed may set the vehi cle in
motion , even with the parking brake applied. •
Selector lever positions
This section describes the selector lever positi ons and
drivi ng ra nges .
Fig . 18 6 D ispl ay in the
in strument cluste r:
s elec tor lev er in po si­
tion D
The selector leve r posi tion engaged appears next to the selec tor
lever as wel l as in the instrument c luster display . A lso, the current
gear engaged is sh own in positi ons D and S .
P -Park
In this selector leve r pos it ion the transmission is mechanica lly
locked . Engage
P on ly when the vehicle is completely stopped=> &
in "Driving the automatic transm ission" on page 166 .
To shift in or out of position P, you must first press and hold the
brake peda l
and then press the re lease bu tton in t he se lecto r leve r
handle while moving the selector lever to or from
P . You can shift
out of this position only with the ignit ion on.
R -Re ver se
The transmission wi ll au tomatically select the lowest gear ratio
when you shift into reverse .
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Adaptive Air Suspension
Adaptive Air Suspension and
Damping
Description
Adaptive Air Suspension and damping can be regulated and they adapt automatically t o a request from the driver
and the driving situation at the time.
Adaptive Air Suspension is an electronica lly controlled springing
and damping system. This chassis system makes it easier on the
driver by adapting to the particular situation through imperceptible
control processes.
The
Ad aptiv e Ai r Suspen sion component regulates ground clear ­
ance depending on vehic le speed, load condition and driver input.
Accelerating to a speed above a predetermined limit wil l make the
vehic le lower itself. On the other hand, driving more slowly results
in the vehicle raising aga in at specific speeds.
The
damping component provides individual control of the
damping forces . For example, with damping c haracteristics set to
provide greater comfort, damping is set somewhat harder for a brief period only as required, for example, when going around a curve or
over rough road surfaces as well as when braking.
Settings
Adaptive Air Suspension provides the driver w ith the opportunity to
set the chassis characteristics also to their individual preference .
With the driving modes
standard, automatic and dynamic the driver
has three chassis settings available, ranging from comfort to sporty.
In addition,
lift provides a fourth mode which can be selecting for
driving over poor stretches of road=>
page 189, "Chassis Controls".
The modes are set in MMI =>
page 191.
On vehicles equipped with the s port su spen sio n Adaptive Air
Suspension -Sport*, there is generally more emphasis on a sporty
chassis setting. Settings range from comfortable to firm
=>
page 190, "Sport Chassis Contro ls".
0 Note
• Whenever you park your vehicle, always make sure there is
adequate c learance
above and below the vehic le . The height of the
parked vehicle can change as the result of temperature fluctuations,
changes in load conditi on and changes in the driving m ode (gro und
clearance).
• Mount the tie -down chains/cables over the running surface
(circumference) of the tires . Never secure the vehicle by the axle, the
suspension stru ts or the front or rear towline eye. For technical
reasons, the pressure in the suspension struts may change during
the transport and this wi ll adversely affect vehicle handling.
• To prevent damage to the vehicle underbody, remember that
you r veh ic le is not an off -road vehicle, even in the lift mode. The
ground c learance is insufficient for this type of operation.
• If you are going to tow a trai ler, you must activa te the trai ler oper ­
ation mode=>
page 792.
[ i ] T ip s
Before you can raise your vehic le using the vehicle jack (for
example, when changing a flat tire) you must activate the jacking
mode=>
page 191 . •

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- Press the appropriate programmed button G),@ or @
to activate the desired remote control function~
& in
"General information" on
page 194. •
Applies t o ve hicl es: wit h Hom elin k® universal re mote co nt ro l
Reprogramming a single button
A Homelink ® button can be reprogrammed individually
without affecting the other button a/locations.
Programming the overhead keypad
- Press the appropriate Homelink® button unt il the indi ­
cator light begins flashing slowly.
Programming the bumper mounted transmitter
1. Hold the original remote control at a distance between 0-
5 in. (0-13 cm) from the bumper below the appropriate
headlight for your vehicle (use the sho rtest distance
possible) .
2. Aim the remote control just below the
driver side head­
light.
3. Press and hold the activation button on the remote control.
4. The emergency flashers will flash
three times (after
about
15-60 seconds) when the programm ing is
successful. Now release the button on the remote
control.
- If the device ut ilizes a rolling code, please follow phase 3
of ~
page 195, "Programming the Homelink® trans ­
mitter" for rolling code programming.
Controls and equip ­
ment This procedure
will cause
the existing programming on the
Homelink ® button to be erased! •
App lies t o ve hicles : with Homeli nk® universa l re m ote contro l
Erasing the programming of the Homelink ®
transmitter
When you erase the programming , the programming on
all three of the transmitter channels with be lost!
- Perform steps 1 to 4 as descr ibed on~ page 195, "Phase
1: programm ing the overhead keypad ".
When completed , the Homelin k® system will be in the program­
ming mode and is then ready to learn the cod es for remote
controlled devices.
(I) Tips
• Programmed buttons cannot be erased individually.
• For security reasons you ar e advis ed to erase the programming
of the Homelink ® system befo re you sell your vehicle. •
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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. •
Vehicle care Do-it-yourself service Technical data

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& WARNING (continued)
• Passengers must always sit in an upright position and never
lean against or place any part of their body too close to the area
where the airbags are located.
• Passengers who are unbelted, out of position or too close to the
airbag can be seriously injured by an airbag as it unfolds with
great force in the blink of an eye .
• Always make sure that there are at least 10 inches (25 cm)
between the front passenger's breastbone and the instrument
panel.
• Always make sure that there are at least 4 inches (10 cm)
between the front passenger's knees and the lower part of the
instrument panel .
• Each passenger must always sit on a seat of their own and
properly fasten and wear the safety belt belonging to that seat .
• Before driving, always adjust the front passenger seat and
head restraint properly.
• Always keep your feet on the floor in front of the seat. Never
rest them on the seat, instrument panel, out of the window, etc .
The airbag system and safety belt will not be able to protect you properly and can even increase the risk of injury in a crash .
• 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. •
Proper seating positions for passengers in
rear seats
Rear seat passengers must sit upright with both feet on
the floor consistent with their physical size and be prop­
erly restrained whenever the vehicle is in use.
To reduce the risk of injury caused by an incorrect seating
position in the event of a sudden braking maneuver or an
accident, your passengers on the rear bench seat must
always observe the following:
- Adjust the head restraint so that the upper edge is as
even with the top of your head as possible but no lower
than eye level
=> page 205.
- Keep both feet flat in the footwell in front of the rear seat.
Fasten and wear safety belts properly =>
page 215.
Make sure that children are always properly restrained in
a child restraint that is appropriate for their size and age
=>
page 245.
& WARNING
Passengers who are improperly seated on the rear seat can be
seriously injured in a crash.
• Each passenger must always sit on a seat of their own and
properly fasten and wear the safety belt belonging to that seat.
• Safety belts only offer maximum protection when the safety
belts are properly positioned on the body and securely latched. By
not sitting upright , a rear seat passenger increases the risk of
personal injury from improperly positioned safety belts!
• Always adjust the head restraint properly so that it can give
maximum protection. •

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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 ".
Vehicle care Do-it-yourself service Technical data

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& WARNING
Improperly stored luggage or other items can fly through the
vehicle causing serious personal injury in the event of hard braking or an accident. To help reduce the risk of serious personal injury:
• Always put objects, for example, luggage or other heavy items
in the luggage compartment.
• Always secure objects in the luggage compartment using the
tie-down hooks and suitable straps.
& WARNING
Heavy loads will influence the way your vehicle handles. To help
reduce the risk of a loss of control leading to serious personal
injury :
• Always keep in mind when transporting heavy objects, that a
change in the center of gravity can also cause changes in vehicle
handling:
-Always distribute the load as evenly as possible.
- Place heavy objects as far forward in the luggage compart-
ment as possible.
• Never exceed the Gross Axle Weight Rating or the Gross
Vehicle Weight Rating specified on the safety compliance sticker on the left door jamb. Exceeding permissible weight standards
can cause the vehicle to slide and handle differently.
• Please observe information on safe driving
~ page 200.
& WARNING
To help prevent poisonous exhaust gas from being drawn into the
vehicle, always keep the rear lid closed while driving.
• Never transport objects larger than those fitting completely
into the luggage area because the rear lid cannot be fully closed.
& WARNING (continued)
• If you absolutely must drive with the rear lid open, observe the
following notes to reduce the risk of poisoning :
- Close all windows,
- Close the power roof,
- Open all air outlets in the instrument panel,
- Switch off the air recirculation,
- Set the fresh air fan to the highest speed.
& WARNING
Always make sure that the doors, all windows , the power roof and
the rear lid are securely closed and locked to reduce the risk of
injury when the vehicle is not being used.
• After closing the rear lid, always make sure that it is properly
closed and locked .
• Never leave your vehicle unattended especially with the rear lid
left open. A child could crawl into the vehicle through the luggage
compartment and close the rear lid becoming trapped and unable
to get out . Being trapped in a vehicle can lead to serious personal
injury.
• Never let children play in or around the vehicle.
• Never let passengers ride in the luggage compartment. Vehicle
occupants must always be properly restrained in one of the
vehicle's seating positions.
[ i] Tips
Air circulation helps to reduce window fogging. Stale air escapes to
the outside through vents in the trim panel, on the left side of the
luggage compartment. Be sure to keep these slots free and open. •