2008 AUDI S6 engine

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Ap plies to vehicl es: wi th Adap tive Ai r Su sp ension
Chassis controls
Four different driving modes can be set by the driver.
The automatic contro l processes are speed -and time -dependent.
For example, it is not possib le to raise the suspension to the lift
mode above certain speeds.
L ev el a djustment
automatic
dynamic
aut om ati c Ground clearan
ce
about 4.7 - 4 .1 inches
(120 -105 mm)
about 4.7 inches (120 mm)
about 4.1 inches (105 mm)
a bo ut 5.3 inches ( 135 mm)
Se lect the automatic mode i f you p refer suspension and damping
settings emphasizing comfort .
• Low ering : When a speed of about 75 mph (120 km/h) is exceeded
for more than 30 seconds, the vehicle is automatically lowered by about 0.6 inch (15 mm) to the dynamic level which is more suitable
for highway speeds. Road holding is optimized as a result of the lower center of gravity and fuel consumption is reduced as a result
of reduced wind res istance.
• Rais ing : The vehicle is automatically raised again if the speed
falls below about 44 mph (70 km/h) for a period of 2 minutes . The
vehic le is raised immediate ly when speed falls below about 22 mph
(35 km/h).
s ta nd ard
Select the standard mode if you desire a suspension setting with a
special emphasis on comfort. In the standard mode there is
no
lowering of the suspension. Even a t high speeds, the vehicle stays
at the same level. Damping characteristics with a decided emphasis
on comfort are selected in this mode.
Controls and equip ­
ment d
y n ami c
Select the dynamic mode if you prefer a sporty suspension setting .
In this mode, the vehicle is lowered whi le it is still stationary and
spo rty damping characteristics are selected . The warn ing light
c.::i
in the instrument cluster will come on for a few seconds just to
remind you of the reduced ground clearance .
If y ou switch off the engine wh ile the ve hicle is in the dynamic mode
and then switch on the ignition once again, the
c.::i warning light
wi ll also come on again f or a few seconds as a reminder .
lift
Select the lift mode when you have to travel over poor sect ions of
road (e .g. trails). In the lift mode, the vehic le is raised by 0.6 inch (15
m m) compared to norma l leve l while it is stil l stationary and
damping characteristics are adjusted to emphasize comfort .
The lift mode can be activated only at speeds below 50 mp h (80
km/h) . When a speed of about 62 mph (100 km/h) is exceeded, the
system automatical ly leaves lift mode and the mode set previously
(standard, automat ic, dynam ic) is activated aga in. •
App lies to v ehic les : with Ada ptive Air Suspens io n
Setting the driving modes
The driving modes are set in MM/.
Fig . 18 2 MMI di splay:
Settin gs _,.
I • •

• ..__H_ o_ m_ e_ L_in _ k_® ____________________________________________________ _
Homelink®
Universal remote control
Applies to vehicles: w ith Home Link® universal remote control
General information
The Homelink® feature can learn the up to three radio
frequency codes for most current transmitters used for
operating garage doors, estate gates, home or outdoor
lighting systems, and other devices.
You must first program the Homelink® transmitter before you can
use the system=>
page 186, "Programming the Homelink® trans­
mitter".
In order to program the Homelink® transmitter for devices utilizing
rolling code, a second person on a ladder who can safely reach the
garage door opener motor is recommended. It is also necessary to
locate the "learn" button on your garage door opener motor. Refer
to the operating instructions for the opener, as the location and
color of this button may vary by manufacturer.
You can still use the original remote control for the device at any
time .
& WARNING
• Never use the Homelink"" transmitter with any garage door
opener that does have not the safety stop and reverse feature as
required by federal safety standards. This includes any garage
door opener model manufactured before April 1, 1982.
• A garage door opener which cannot detect an object, signaling
the door to stop and reverse does not meet current federal safety
standards . Using a garage door opener without these features
increases risk of serious injury or death .
& WARNING (continued)
• For safety reasons never release the parking brake or start the
engine while anyone is standing in front of the vehicle.
• A garage door or an estate gate may sometimes be set in
motion when the Homelink ® remote control is being
programmed . If the device is repeatedly activated, this can over­
strain motor and damage its electrical components -an over­
heated motor is a fire hazard!
• To avoid possible injuries or property damage, please always
make absolutely certain that no persons or objects are located in
the range of motion of any equipment being operated. •
Applies to vehicles: wit h Home link® universal remote contro l
Programming the Homelink ® transmitter
The transmitter is programmed in two phases. For rolling
code transmitters, a third phase is also necessary.
Fig . 185 Overhead
console: Homelink ®
keypad ...

HomeLink®
------------------------------------
Fig. 186 Front bumper ,
passenger side: loca­
tion of transmitter unit
Phase 1: programming the overhead keypad
1. Make sure your vehicle is within operating range of the
remote controlled garage door opener.
2. Set the parking brake::::>
& in "Genera l information".
3. Turn the ignition on. Do not start the engine!
4. Press and hold the two outside Homelink® buttons
(D
and @for approxim~tely 20 sec_onds until indicator
light ©::::>
page 186, fig. 185 begins to flash. Then
r elease both buttons. Do not hold the buttons for longer
than
30 seconds.
- This procedure only needs to be performed
once . It
erases the factory-set default codes and does not have to
be repeated to program additional remote controls.
5. Press and hold the Homelink® button
(D, ® or@ until
the indicator light © starts flashing
slowly. Release the
button .
-The system will now remain in programming mode for 5
minutes. Go to the front of the vehicle and proceed with
phase 2.
Contro ls and eq uip­
ment
Phase 2:
programming the bumper mounted transmitter
6. 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::::> fig.
186 (use the shortest
distance possible).
7. Aim the remote control just below the
passenger side
headlight.
8. Press and hold the activation button on the remote control.
- May be different in Canada. If so, press and re-press
(cycle) the activation button on your remote control every
two seconds .
9. The emergency flashers will flash
three times (after
about
15-60 seconds) when the programming is
successful. Release the button on the remote control.
-To program more devices, repeat steps 4 to 9.
10. Press and hold the trained Homelink® b utton and
observe the indicator light© ::::>
page 186, fig. 185.
If the indicator ligh t is solid/continuous, programming is
complete and your device should activate when you press and release the trained Homelink® button.
- If the indicator light blinks rapidly for 2 seconds and is
th en a solid/continuous light, proceed with phase 3 to
program a rolling code device.
Phase 3: rolling code programming
-A second person on a ladder who can safely reach the
garage door opener motor is recommended. .,_
Vehicle care I I irechnical data

- Make sure that your passengers also buckle up and prop­
erly wear their safety belts.
- Protect children with a child restraint system appropriate
for the size and age.
The warning light 4,-in the instrument cluster lights up when the
ignition is switched on as a reminder to fasten the safety belts . In
addition , you will hear a warning tone .
After the ignition is switched on, the warning light in the instrument cluster will always come on for about 6 seconds and if the driver has
not fastened the safety belt , a warning tone will also sound for
about 6 seconds. As soon as the driver has fastened the safety belt,
the warning tone will stop and the warning ligh t will go out .
If the driver or front seat passenger have not buckled -up within
about 10 seconds after the warning tone has stopped and the
vehicle is moving faster than about 15 mph, the warning tone will
sound again for about 6 seconds and then stop for 24 seconds and
then repeat this reminder sequence for a maximum of 2 minutes . At
speeds below 5 mph, the warning tone will not sound.
Fasten your safety belt and make sure that your passengers also
properly put on their safety belts.
& WARNING
• 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.
• Failure to pay attention to the warning light that come on,
could lead to personal injury. •
Safety first
Safety belts
Why safety belts?
Frontal collisions and the law of physics
Frontal crashes create very strong forces for people riding
in vehicles.
Fig . 193 Unbelted
occupants in a vehicle
heading for a wall
Fig. 194 The vehicle
crashes into the wall
The physical principles are simple. Both the vehicle and the passen­
gers possess energy which varies with vehicle speed and body
weight . Engineers call this energy "kinetic energy."
The higher the speed of the vehicle and the greater the vehicle's
weight, the more energy that has to be "absorbed" in the crash.
Vehicle speed is the most significant factor . If the speed doubles
from 15 to 30 mph (25 to 50 km/h) , the energy increases 4 times!
~
Vehicle care I I Technical data

Safety belts protect
People think it's possible to use the hands to brace the
body in a minor collision . It's simply not true!
Fig . 19 7 Driv er is
co rre ctl y r est rai ned in
a sud den braki ng
m an eu ver
Safety belts used pr operly can make a b ig di fference . Safety belts
help to keep passengers in their seats, gradually reduce energy
levels app lied to the body in an accident, and help prevent the
uncontrolled movemen t that can cause serious injuries . In addition ,
safety belts reduce the danger of being thrown out of the vehicle .
Safety belts attach passengers to the car and give them the benefit
of being s lowed down more gent ly or "softly" through the "give" in
the safety belts, crush zones and other safety features engineered into today's vehicles. By "absorbing" the kinetic energy over a
longer period of time, the safety belts make the forces on the body
more "tolerable" and less likely to cause injury .
Although these examples are based on a fro ntal co llision, sa fety
belts can also substantially reduce the risk of injury in other kinds
of crashes . So, whether you're on a long trip or just going to the
corner s tore , a lways buckle up and make sure others do , too . Acci­
dent statistics show that vehic le occupants properly wearing safety
belts have a lower risk of being injured and a much better chance o f
surviving an accident. Properly using safety belts also greatly
increases the ability of the supplemen tal airbags to do their job i n a
collision . For this reason, wearing a safety belt is legally required in
most coun tries including much of the United States and Canada.
Safety first
Safety b elts
Although your Audi is equipped with airbags, you sti ll have to wear
t he safety belts provided. Front airbags, for examp le, are activa ted
only in some fronta l collisions . The front airbags are not ac tiva ted in
a ll fron tal collisions, in side and rear collisions, in roll overs o r in
cases where there is not enough deceleration through impact to the
front of the vehicle. The same goes for the other airbag systems in
your Audi. So, always wear your safety belt and make sure every­
body in your vehic le is properly restrained! •
Important safety instructions about safety
belts
Safety belts must always be correctly posi tioned across
the strongest bones of your body.
Always wear safety be lts as illustrated and described in
th is chapter .
Mak e su re that your s afety belts ar e always r eady for use
a n d a re not damaged .
& WARNING
Not wearing safety belt s or wear ing them improperl y increases
the ri sk of ser ious per so nal injury a nd de ath . S afety belt s ca n work
only when used corre ctl y.
• Alway s fasten your safety belts correctly before dri ving off and
make sure all passengers are correctly restrained .
• For ma ximum prote ction , safety belts mu st always be posi ­
tioned properly on the body .
• Never str ap more than one pe rson, includ ing small ch ildr en ,
into any belt .
• Never pla ce a safety belt over a child sitting on your lap .
• Alway s keep feet in the footwell in front of the seat while the
vehicle is being driven . .,
Vehicle care
I I irechnical data

llffl __ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
Intelligent technology
Notice about data recorded by
vehicle control modu les
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders" .
Some state laws restrict the retrieva l or downloading of data stored
by EDR's that were insta lled in a vehicle for the express purpose of
retrieving data after an accident or crash event without the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehicle-related data during norma l vehicle operation for diagnost ic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehicle speed, direction, braking as well as restraint system use and performance in the
event of a crash or other condition . Stored data can only be read and
down loaded with special equipment .•
Electron ic Stabilizat ion Program (ESP)
General =nformation
The ESP improves the vehicle stability.
(
Fi g. 225 C ente r
co nso le w it h ES P
swi tch
ESP is designed to he lp you maintain vehic le control in situations
where the car approaches the limits of "grip", especia lly when
accelerating and cornering. ESP reduces the risk of skidding and
improves stabil ity under all road conditions .
T he system operates across the entire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP wil l also shut down .
How th e sys te m w ork s
The Anti -Lock Brake System (ABS) , Electronic Differential Lock (EDU
and the Anti-Slip Regulation System (ASR) are integrated in the e lec­
tronic stabi lization program . In addition to the data provided by
these functions, the ESP control unit requires additional measure­ ment data provided by high performance sensors . The rotational
speed of the vehic le about its vertical axis, vehicle acce leration in
the fore-and-aft and lateral directions, the brake pressure and the steering angle are al l measured .

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with less grip, gradually increase the pressure on the accelerator
pedal until the car starts to move.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads on this wheel, the EDL cuts out tempo ­
rarily. The vehicle remains operational and behaves in the same way
as a vehicle without EDL.
As soon as the brake has cooled down, EDL switches on again auto ­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL working, the drive wheels can spin and reduce your
ability to control your car. Risk of crash!
• The increased safety afforded by EDL does not mean that you
can take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
If a fault occurs in the ABS, the EDL is also not functioning. This is
indicated by the ABS warning light=>
page 22. •
Ant"-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP). When the vehicle starts up and acceler ­
ates, the wheels are prevented from spinning by adjusting the engine power to match the amount of grip available from the road
surface.
How the system works
ASR
performs automatically, i.e. without the driver's intervention.
With the aid of the ABS sensors=>
page 262, ASR monitors the
speed of the driven wheels. If the wheels start to spin, the engine
torque is reduced automatically until the tires find enough grip to
lock onto the road surface. The system is active across the entire
speed range.
Th e ASR works in conjunction with the ABS. If a malfunction should
occur in the ABS, the ASR will also be out of action.
Activating
The ESP is automatically activated when the engine is started and it
performs a self -test . You can activate a deactivated ASR if required
by pressing the =>
page 258, fig. 225 button . When it is activated,
the message
ESP/ASR on appears briefly in the display. Vehicles
with front-wheel drive a deactivated ASR automatically re-activates
itself at a speed of 40 mph (70 km/h) .
Deactivating
You can deactivate the ASR if required by pressing the button (for
less than 3 seconds)=>
page 258, fig. 225. With the ASR deactivated,
the ESP check light comes on, see=>
page 19. The message ASR off
appears in the display as well. On vehicles with front-wheel drive:
deactivation is possible only up to 30 mph (50 km/h) for safety
reasons . Vehicles with all -wheel drive: the ASR can be deactivated
at any speed .
The ASR should normally be activated all the time. Only in certain
exceptional situations when some slip is desirable does it make
sense to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck .

When the abnormal situation is over, you should activate the ASR
again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
To ensure that the ASR works properly, all four wheels must be fitted
with identical tires. Any differences in rolling radius of the tires can
cause the system to reduce engine power when this is not desired.
See also~
page 325, "New tires and replacing tires and wheels". •
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automobiles are still subject to wear,
depending largely on operating conditions and driving habits~& .
On vehicles which are driven mostly in stop-and-go city traffic or
which are driven hard, the brake pads should be checked by your
authorized Audi dealer more often than specified in the
Mainte­
nance
& Warranty booklet.
On steep slopes, you should use the braking effect of the engine.
This way, you prevent unnecessary wear on the brake system. If you
must use your brakes, do not hold the brakes down continuously.
Pump the brakes at intervals.
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
Moisture or road salt
If
you are driving faster than 50 mph (80 km/h) and the windshield
wipers are on, the brake pads will briefly touch the brake discs in regular intervals so as to improve reaction time when braking on
wet surfaces. You, the driver, will not notice anything.
Under certain conditions, for example, when driving through water
or very heavy rain, or even after washing your vehicle, the braking
effect can be reduced due to moisture (or in freezing conditions ice)
on the brake pads. A few careful brake applications should dry off
the brake pads or remove any ice coatings .
The effectiveness of the brakes can be reduced when the vehicle is driven on a salt-covered road and the brakes are not used. Here too,
you should clean off accumulated salt coating from brake discs and
pads with a few careful applications of the brake ~& .
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corrosion to form on the discs if the car is not driven regularly or
only for short trips with little use of the brakes.
If the brakes are not used frequently, or if corrosion has formed on
the discs, it is advisable to clean off the pads and discs by braking
firmly a few times from a moderately high speed~&.
Faults in the brake system
If you should notice a sudden increase in brake pedal travel, then
one of the two brake circuits may have failed~& .
Low brake fluid level
Malfunctions can occur in the brake system if the brake fluid level is
too low . The brake fluid level is monitored electronically .
& WARNING
• You should perform braking maneuvers for the purpose of
cleaning the brake system only if road conditions permit. Other
road users must not be put at risk -you may cause an accident!
Vehicle care Do-it-yourself service Technical data