display AUDI S8 2009 Workshop Manual

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& WARNING !continued)
injuries to the hands, arms and head if the driver's airbag
deploys. •
Easy entry feature
The easy entry feature makes it easier to enter and exit the
vehicle by automatically adjusting the steering wheel.
Press the button @ :::> page 128, fig. 143 to turn the easy
entry feature on or off.
When the easy entry feature is turned on (button depressed), the
steering wheel moves up to the parked position when the ignition is
turned off. After you enter the vehicle, the steering wheel moves to
the stored position as soon as you turn on the ignition. •
Ignition lock and ignition switch
Ignition key positions
The engine can be started or turned off with the ignition
key.
Con tro ls and eq uip­
ment
Fig . 144 Ignition
switch positions
Position @
The ignition key can be inserted into the ignition switch in this posi ­
tion. This automatically unlocks the steering column lock. When the
ignition key is removed, the steering column lock is automatically
locked=> &.
Ignition on G)
Turn the ignition key to this position and release it.
Starting the engine @
The engine starts with the key in this position. Major electrical loads
are temporarily turned off.
Ignition off G)
Turn the ignition key to this position and release it.
& WARNING
• Never remove the key from the ignition lock while the vehicle is
moving. The steering wheel will lock, causing loss of control.
• If you have to leave your vehicle, even for just a minute, always
remove the ignition key and take it with you. This is especially
important if you are going to leave children unattended in the
vehicle. The children could start the engine or use other vehicle
controls. Unsupervised use of vehicle controls (for example, power
windows) can cause serious personal injuries.
0 Note
• If the ~ symbol in the display blinks, there is a malfunction in the
electronic steering column lock. Follow the instructions in
=>
page 33, "Steering malfunction i".
• If the .Pc, symbol in the display blinks, there is a malfunction in
the electronic ignition lock. Follow the instructions in
=> page 33,
"Ignition lock malfunction .Pe". ..,.
Vehicle care I I irechnical data

• ..__O_ n_ t_h _ e_ r_ o_ a_ d ____________________________________________________ _
[ i J Tip s
• If you release the ignition key in positions G) , @ or G), the key
automat ically returns to pos ition @.
• If you open the driver 's door when the ignition is switched on , a
buzzer sounds and the message
Ignition i s on appears in the instru ­
ment cluster display. Please switch the ignition off .•
Ignition key safety lock
The igni tion key can only be remove d when the selector
lever is in the "P" (Park) posi tion.
After turning off the ignition , the igni tion key can only be removed
from the ignition lock when the selector lever is in the "P" (Park)
position . Af ter you have removed the key, the selector lever is locked
and cannot be moved .•
Starting and stopping the engine
Starting the engine
The engine ca n only be started with your original Audi
key.
Fig. 145 Ignitio n ke y
po sitions
Ste p on the brake.
- Move t he selector lever into P or N
~ &.
Turn the ign ition key to position 0 ~ fig . 145 -do not
depress the gas pedal when s tarting the engine .
A cold engine may sound loud after it has been started . This is due
to the hydrau lic valves building up oil pressure. This is normal and
is not a need fo r concern .
I f the engine does not start immediately, stop t rying after 10
seconds and then try to restart the engine about 30 seconds later .
& WARNING
Never sta rt or let the engine run in a confined or en clo sed are a.
Exhaust fumes from the engine contain carbon monoxide, a color ­
less and odorle ss gas. Carbon mono xide can be fatal if inhaled.
• Never leave the engine idling unattended. An unattended
vehicle with a running engine po ses a d ange r of person al injury or
theft.
0 Note
• Avoid high e ngine speeds, fast acceleration or heavy eng ine
loads while the engine is still cold. This could damage the engine.
• The eng ine cannot be s tarted by push ing or towi ng the vehicle.
c£> For the sake of the environment
To avoid unnecessary engine wear and to reduce exhaust emis ­
sions, do not let your vehic le stand and warm up. Be ready to drive
off im mediately after starting your vehicle . Maintain moderate
speed until the engine is completely warm . Remember , the engine
performs best at operating temperature. •

-On th
e roa d --------------------
When s tarting a cold engine, the engine may be a bit noisy for a
s h or t while. This is because the hydraulic valves are working to
bring up the oil pressure. This is norma l and no cause for concern .
If the engine does not start immediately, stop cranking the engine
af ter 10 seconds . Wa it 30 seconds, then try to restart the eng ine .
& WARNING
Ne ver sta rt the en gine in an en clos ed area su ch a s in your gar age
with th e garage door clo sed . The exhau st fum es are poisonous!
0 Note
• Avoid high engine speeds, full gas or heavy engine loads if the
eng ine has not warmed up to its operating temperature. You cou ld
damage the engine.
• Do not try to start the engine by pulling or pushing .
<£> For the sake of the environment
Do not let your veh ic le stand and warm up . Be ready to drive off
right away. This way, you prevent unnecessary exhaust emissions .
[ i J Tip s
If you open th e driver 's door when the ignition is switched on , a
buzzer sounds and the message
Ignition i s on appears in the instru ­
ment clust er display. Pl eas e switch the ign ition off .•
Ap plies to vehicles: w it h C onve nience key
Stopping the engine using the [STOP] button
0
0
- Bring t he vehicle to a complete stop.
Fi g. 14 7 Co nve nie nce
key: S TOP butt on
Move t he s elect or in to the P or N posi tion .
Press the [STO P) button ~ fig. 147 .
Pressing the [ STOP) but ton once sw itches off the engine and the
ignition . If you press the [
STOP] button again for approximately 2
seco nds, the steering wi ll be locked, provided that the selector lever
is in the P position
=> & .
Emergen cy OFF fun cti on
I f necessary , th e engine can be switched off with the selector lever
in the R, Dor S pos it ions . To do so, step on the foot brake and press
and hold the [
ST OP] button (vehicle speed must be be low 6 mph/
10 km/h) .
& WARNING
• Never stop the engine until the vehi cle h as c ome to a c omplete
stop .
• The bra ke booster and the se rv otronic only work when the
engine i s running .
If you turn off the engine , more force will be

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0 Not e
If the warning/indicator light (U.S. models : BRAKE, Canadian models:
CCD) ) flashes in the instrument cluster, there is a brake system
malfunction. By pressing the
I CHECK] button, you can bring up a
driver m essage which explains the malfunction in more detail. If the
message
P arking br ake ! Plea se contact work shop appears, there is
a parking brake malfunction which you should have repaired imme ­
diate ly by an au thorized dealership ~
page 30. •
Cruise control
Switching the system on
The cruise control system makes it possible to drive at a
constant speed starting at 20 mph (30 km/h).
Con tro ls and eq uip­
ment
F ig . 149 Contro l le v er
w ith set butt on F
ig . 150 D ispla y:
Se lecte d sp ee d
Pull the lever to positi on G) => fig. 149 to swi tc h the
system on .
Drive a t th e speed yo u w ish to set .
Press button
© to set that speed.
The display ~ fig. 150 will show the set speed. The display may vary
depe nding on the type of display in your vehic le. The indicator light
CRUISE (US model)/ 0" (Canadian model) will a lso light up in the
instrument cluster.
The speed is kept constant via an engine output adjustment or active brake intervention .
& WARNING
• Alway s pa y attention to traffic even when the crui se control is
s w itched o n. You are alwa ys respo nsible f or your speed and the
d is tan ce bet ween your vehicl e and other vehi cle s.
• For safety reason s, the cruise con trol s hould not be used in the
c ity , in stop -and -go tra ffi c, o n twi sting road s and when road condi ­
tion s are po or (s uch a s ice, fog, gr avel , he avy rain and h ydro ­
pl anin g) -ris k of a ccident.
• Turn off the crui se co ntro l te mpo rarily whe n ente rin g turn
lan es, highwa y exit la ne s or in con stru ction zon es.
Vehicle care
I I irechnical data

• .___O_ n_ t_h _e _ r_o _a_ d __________________________________________________ _
& WARNING (continued)
• Please note that inadvertently "resting" your foot on the accel­
erator pedal causes the cruise control not to brake . This is because
the cruise control is overridden by the driver's acceleration.
[ i J Tips
The brake lights illuminate as soon as the brakes decelerate
automatically. •
Changing speed
-Press lever in the 0 or O direction => page 137, fig. 149
to increase or decrease your speed.
- Release the lever to save that speed.
Change speed in increments of 1 mph (1 km/h) by lightly pressing
the lever . If you keep the lever pressed down, you will alter your
speed in 5 mph (10 km/h) increments.
You can also press the accelerator pedal down to increase your
speed, e.g . if you want to pass someone. The speed you saved
earlier will resume as soon as you release the accelerator pedal.
If, however, you exceed your saved speed by 5 mph (10 km/h) for
longer than 5 minutes, the cruise control will turn off temporarily.
The green symbol in the display=>
page 137, fig. 150 is rep laced
with a white symbol. The saved speed remains the same. •
Presetting your speed
You can preset your desired speed while the vehicle is not
moving.
- Turn on the ignition. -
Pull lever into position
G) => page 137, fig. 149.
- Press the lever in the
0 or O direction to increase or
decrease your speed.
- Release the lever to save that speed.
This function makes it possible, for example, to save the speed you
want before driving on the highway. Once on the highway, activate
the cruise control by pulling the lever toward
(D. •
Switching the system off
Temporary deactivation
- Press the brake pedal, or
- Press the lever into position
0 (not clicked into place)
=> page 137 , fig. 149, or
- Drive for longer than 5 minutes at more than 5 mph
(10 km/h) above the stored speed.
Switching off completely
-Press lever into position 0 (clicked into place), or
- Switch the ignition off.
The system retains the saved speed if you deactivate the cruise
control temporarily . To resume the saved speed, release the brake
pedal and pull the lever to position
(D .
Switching the ignition off erases the saved speed.
& WARNING
You should only return to the saved speed if it is not too fast for
the current traffic conditions -risk of an accident! •

__________________________________________ ...;A~d~a~p~t~iv~e~C~ru~is~e~C:_:o~n~t!..ro~I _J __
Adaptive Cruise Control
Speed and distance control system
Applies to vehic les : with Adaptive C ruise Cont rol
Description
The Adaptive Cruise Control driver assistance program is
a combined speed and distance control system.
Fig. 151 Front
bumper: Position of
radar sensor
Adaptive Cruise Control can help make driving more relaxed and
less tiring, particularly during long trips on interstates or other
highways that are generally straight .
Set ACC to maintain a constant, legal travel speed between 20 and
95 mph (30 -150 km/h) that is appropriate for prevailing traffic
conditions. Select a following distance to the vehicle ahead and ACC
will adjust your speed to maintain that distance .
Adaptive Cruise Contro l has technical limitations that you must
know, so please read this section carefully, understand how the
system works and use it proper ly at all times .
How does it work?
You can operate the Adaptive Cruise Control using the lever on the
steering wheel column =>
page 142, "How is the speed stored?" and
=>
page 144, "How is the distance set?" .
Contro ls and eq uip­
ment
Driver information
Important information is brought up in the speedometer and in the
instrument cluster display as the vehicle is being driven
=> page 146, "Driver information" .
What is important for you to know
There are limits to what Adaptive Cruise Control can do as the
vehicle is being driven =>
page 150, "System limitations" .
& WARNING
Improper use of the Adaptive Cruise Control can cause collisions,
other accidents and serious personal injury.
• Always remember that the Adaptive Cruise Control has limits -
it will not slow the vehicle down or maintain the set distance
when you drive towards an obstacle or something on or near the
road that is not moving, such as vehicles stopped in a traffic jam,
a stalled or disabled vehicle.
• Always remember that the Adaptive Cruise Control cannot
detect a vehicle that is driving towards you in your traffic lane and
that it cannot detect narrow vehicles such as motorcycles and
bicycles .
• Never drive at speeds that are too fast for traffic, road and
weather conditions .
• The Adaptive Cruise Control cannot slow or brake the vehicle
safely when you follow another vehicle too closely. Always
remember that the Adaptive Cruise Control has a braking power
that is only about 30% of the vehicle 's maximum braking ability.
Always be prepared to brake and take evasive action to avoid colli­
sions and other accident situations.
• Never allow the closing speed between you and other vehicles
to be so high that the Adaptive Cruise Control may not be able to _,,,
Vehicle care I I irechnical data

• ..__A_ d_a...: p:,..._ ti_v _ e_ C_ ru_ is_ e_ C_ o_n_ t_ r_ o _ l ___________________________________________ _
Switching the system off
-Press the lever to position @(latched). •
Applies to veh icles: with Adapt ive Cruise Cont rol
Hovv is the speed stored ?
'° "' M
Fig. 154 Control lever:
Storing speed
With the system switched on the speed is stored as follows:
- Drive at the speed you want. The speed must be between 20 and 95 mph (30 and 150 km/h).
- Press the SET button to store the desired speed.
After the (SETI button is released, the current speed is stored and
maintained.
The instrument cluster display shows the stored speed with a red
indicator light~
page 146.
[ i ] Tips
For safety reasons, the stored speed is erased when the ignition or
the ACC is turned off.•
App lies to vehic les: w it h Adapt ive Cruise Contro l
Changing stored speed
Speed can be changed without touching the accelerator
or brake pedal.
Increasing speed
....
"' M ~ w .,
"'
Fig . 155 Control lever:
Changing speed
- Press the lever briefly upwards Q. USA models: Speed
increases by about 2.5 mph. Canada models: speed will
increase by one mark on the speedometer scale.
- Press the lever upwards
Q and hold it. As long as you
hold the lever up, the light diode display in the speedom­
eter LED display moves forward and the speed is
increased.
Reducing speed
- Press the lever briefly downwards Q. Speed decreases
by 2.5 mph. Canada models: speed will decrease by one
mark on the speedometer scale.
- Press the lever downwards
O and hold it. As long as you
hold the lever down, the light diode display in the speed ­
ometer LED display moves backward and the speed is reduced. ._

-Adaptive Crui se Control .._ _ ______,:,...._ _________________________________________ _
Driver information
App lies to veh icles: with Adapt ive Cruise Cont ro l
Displays in the instrument cluster
Depending on the driving situation, driver information is
displayed in the instrument cluster.
@ Primary display in the speedometer.
Fig. 158 Ove rv iew
instrument clu ste r
@ Supplementary display in the instrument c luster.
© Message in the instrument cluster display.
@ Prim ary display
Important information concerning vehic le operation with Adaptive
Cruise Control is shown in disp lay area @. T he desired speed yo u
set is highlighted in the speedometer and the warning lights show
whether adjustments are being made fo r an object ahead .
This information is always disp layed. Display area @is therefore
called the
primary display.
@ Supplementary disp lay
In display area@ infor mation fro m the navigation sys te m and the
trip computer is displayed in addition to information about Adaptive
Cruise Control. You can select among
the different information by repeated brief
t aps on the RESET b utto n on the w indshield wiper lever ~
page 40,
"Operation" .
P articularly on your first trips with Adaptive Cruise Control, the
supplementary display should be turned on.
@ Message
The information in area © is not d isp layed permanently. Informa ­
tion is displayed on ly if you change the time interva l, if there is a
malfunction or if the Adaptive Cruise Contro l is turned off. •
Applies to veh icles : w ith Adaptive Cruise Contro l
Primary display in the speedometer
Desir ed sp eed
Fig . 159 Primary
d is play in th e speed ­
omete r
The desired speed set by the driver is disp layed wi th a red LED .
The system al lows only speeds from 20 to 95 mph (30 to 150 km/h)
to be se t. This s peed range is fain tly i lluminated in the spee dometer.
Warning lights (symbols )
• ""c:::, Open road : Th e war ning lig ht ""c:::, sh ows that ACC is active
and that no moving vehicle has been detected with in range of the
ra dar senso r up ahead in yo ur l ane of travel. The se t speed is main -
tained. .,

_____________________________________________ A_ d_a ...: p_ t_ i_ v _e_ C_ ru_ is_ e_ C_ o_n _ t_ r_o _ l _ __._
• "°" ""° D riv ing in traffi c: The warning light "°"""° shows that a
vehic le moving in your lane of travel has been de tected up front in
your lane of travel. Your speed is adjusted according to the speed of
the vehicle up front. ACC accelerates and brakes automatical ly
within the system's capabilities.
• "°" ""°
Reque st f or driver to a ssume control: The red flashing
warning light
G'.'.::> 1,.,<:Q means R equ est fo r d riv er to assume control.
You as the driver must slow the vehicle with the foot brake. The
symbo l "°""G'.'.::l tells you that the Adaptive Cruise Control is not able
to slow the vehicle down enough to keep a enough distance to the
vehicle in front of you . A warning tone signal wi ll also sound when
the symbol appears .
& WARNING
Improper use of the Adaptive Cruis e Control f eatures and inatten ­
ti on c an lead to an cra sh a nd s erio us per sonal injury .
• Never allo w the c losing speed between you and other v ehicles
to be so high t hat th e Adap tive Cru is e Control ma y not be abl e to
slow your vehi cle safel y. If closing speed i s too high , you must
apply the brake s yourself to r ed uc e the ri sk of a r ear-end cra sh .
• Alway s sele ct a greater follow ing di stance to th e vehi cle up
a he ad on w et ro ad s th an on dr y roa ds.
• Alway s read and he ed the inf ormation and WARNINGS~
& in
" De scription " on
pag e 139 .
[ i J Tips
• If the Adaptive Cruise Control initiates braking, the hydraulic
brake system is under pressure . Therefore, the brake peda l distance
is shorter and the pedal feels "harder".
• If you use the accelerator to go faster than the speed of the
vehicle ahead of you, the driver intervention prompt wi ll not be
accompanied by a warning tone.
• If the speed you previously set is exceeded, the indicator light in
the speedometer wi ll switch o ff.•
Con tro ls and eq uip­
ment
Ap plies to vehi cle s: wi th Ad apt ive Crui se Co ntro l
Display in the instrument cluster
You should hove the supplementary information
displayed here, p articularly on your first trips.
Fig. 160 D ispla y in th e
i n strum ent cl uste r
Scroll th rough the available information displays by briefly tapping
the ( RESET] button at the end of the windshield wiper lever . You can
se lect and information from the trip computer, naviga tion syste m or
Adaptive Cruise Control.
@ Veh icle symbol
@ Status
© Distance
@ V ehi cle sym bol
The vehicle symbol indicates whether the system has detected a
moving vehicle up front in your lane of travel.
• When no moving vehic le is detected up front, on ly the
outline of
the vehicle
is displayed.
• A
gra y vehicle will appear when a moving vehic le is detected up
ahead.
• A
red vehicle will appear i f the situation detected will soon lead
to a request for the driver to assume control. .,,_
Vehicle care I I irechnical data

• ..__A_ d_a...: p:,..._ ti_v _ e_ C_ ru_ is_ e_ C_ o_n_ t_ r_ o _ l ___________________________________________ _
If Adaptive Cruise Control is turned off or no speed is set, no vehicle
is shown.
@ Status
• The text OFF appears in white letters when Adaptive Cruise
Control is turned off.
• The text
AVAILABLE appears in white letters when the system is
turned on but no requested speed has been set.
• The text
OVERRIDE appears in white letters when you exceed the
requested speed by accelerating.
• The text
DISTANCE! appears in red letters when the interval to a
vehic le traveling ahead is too short and you also have to slow your
vehicle with the foot brake.
• The text messages
DISTANCE 1, DISTANCE 2, DISTANCE 3 or
DISTANCE 4
appear in green letters to indicate the time interval
(distance) you have set and ACC is active.
© Distance
A pointer (arrow) is shown in this area. When slowly approaching a
moving vehicle detected ahead in your lane of travel, this pointer
represents the distance to that vehicle . When approaching that
vehicle rapidly, it serves as early warning of an impending request
for the driver to assume ful l vehicle control. The pointer moves on a
scale from right to left.
Open road: With an open road and no moving vehicle detected up
ahead, no pointer is shown.
Driving in traffic: If a vehicle traveling up ahead in your lane of travel
is detected, the pointer moves to the center area of the scale. This
area represents the time interval (distance) set. It is shown in
green
to make it easier to see.
Driver intervention prompt: Whenever the selected time interval
(distance) to the vehicle moving up ahead in your lane of travel is
less than the time interval (distance) set, the pointer moves into the
red area of the display. When the pointer reaches the farthest posi­
tion on the left, the driver intervention prompt is disp layed to indi -cate that the driver must now assume full vehicle control in order to
prevent
a collision. •
Applies to vehicles : with Adapt ive Cru ise Contro l
Messages
The text messages and symbols shown in this area of the
display are not displayed permanently.
Time intervals
Fig. 161 Information
line
The different symbols for the time intervals (distance) appear if you
change the settings=> fig. 161. In addition, there is a disp lay if the
gong (audible warning signal) is turned off.
Three white dots ... appear if a setting cannot be made with the
operating lever. The following are possible reasons
• If you pull the control lever forward to resume speed but no
requested speed was set.
• If you push the lever up to increase (or down to reduce) speed
when no speed has been set previously.
• If you push the lever up to increase (or down to reduce) speed
and this speed is outside the 20 to 95 mph (30 to 150 km/h) speed
range. .,