2009 AUDI S8 warning

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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

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Vehicles moving in you r direction can be detected up to a dis tance
of about 140 yards (130 meters) bu t the Adaptive Cruise Control
cannot detect vehicles that are stopped or sta lled, obs tacles that do
not move or narrow vehic les like motorcyc les and bicycles .
Open road
When the road is c lear, Adap tive Cruise Con trol works like cruise
control. It maintains a constant target speed specified by the driver .
Driving in traffic
If a slow er vehicle driving ahead is detected, the Adaptive Cruis e
Contr ol dece lerates (within the limits of the system) ::::,
page 150 to
its spe ed and after adjusting, tries to maintain the set distance from
t he veh ic le ahead. The vehicle may temporar ily d rive slower tha n
the set speed while adjusting ::::,
& in "Description" on page 139.
If the vehicle in front accele rates, Adaptive Cruise Control also accel ­
erates up to the speed that you have set.
Situations requiring driver intervention
I n some situations you w ill have to use the foot brake and slow the
veh icle down in order to keep a sa fe distance from vehicle in front
of you or to avoid a rear -end collision. In this situation, a symbol
appears and a warning tone sounds::::,
page 146.
Passing another vehicle
If you move int o the pa ssing lane and no vehicle is detecte d ahead,
Adaptive Cruise Contro l accelerates to the speed you have set and
maintains it .
Overriding ACC
You can increase your speed a t any time by stepping on the acceler ­
ator pedal. After you re lease the accelerator pedal, the system
adjusts back down to the speed you previously set .
Contro ls and eq uip­
ment
& WARNING
• Never rely on the distan ce control feature of ACC alone to
prevent rear -end collisions. Always be prepared to brake and take
evasive action to avoid colli sio ns and other accident situation s.
• Never allow the closing speed between you and other vehicle s
to be so high that the Adaptive Cruise Control may not be able to
slow your vehicle safely . If clo sing speed i s too high , you must
apply the brakes yourself to reduce the risk of a rear -end cra sh .
[ i ] Tips
Please note that the amount of acceleration the Adaptive Cruise
C o ntro l use s depends on the Distance setting selected . DISTA NCE 1
gives you acceleratio n that is dynamic a nd sporty. D IS TA NCE 4, on
the other hand, gives more moderate acceleration . For more infor ­
mation about the ti me inte rvals ::::,
page 144, "How is the distance
set?". •
Applies to veh ic les : wi th Ad aptive Cr uise Co ntro l
Switching the system on and off
Switching the system on
- Pull the le ver t o positi on G) .
Vehicle care I I
Fig . 15 3 Contr ol le ver:
Sw itch ing on an d off
irechnical data

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After releasing the control switch, the system regulates the speed to
the value just set.
& WARNING
Improper use of the Adaptive Cruise Control features and inatten­
tion can lead to an accident causing serious personal injury.
• It is dangerous to use the "RESUME" feature when the previ­
ously set speed is too high for existing road, traffic or weather
conditions.
• Always read and heed the information and WARNINGS =>
& in
"Description" on
page 139.
[ i] Tips
You can increase your speed at any time by stepping on the acceler­
ator pedal. After you release the accelerator pedal, the system auto ­
matically adjusts back down to the speed you previously set . A new
desired speed can be stored at any time by pressing the [SET)
button =>
page 142, fig. 154. •
Contro ls and eq uip­
ment
A pp lies to veh icles: w it h A dapt ive Crui se Contro l
Turning Adaptive Cruise Control off
temporarily
In some situations it makes sense to turn Adaptive Cruise
Control off temporarily.
Turning control off temporarily
Step on the brake pedal or
Fig. 156 Control lever:
Turning Adaptive
Cruise Control off
temporarily
Press the control lever in the direct ion of the arrow 0
(not latched) => fig. 156.
Reactivating control
To resume the stored speed, release the brake pedal and
press the control lever in the direction of the arrow
G) .
& WARNING
Improper use of the Adaptive Cruise Control can cause collisions,
other accidents and serious personal injuries.
• Never resume the stored speed if the speed is too high for
prevailing road, traffic or weather conditions. ..
Vehicle care I I irechnical data

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DISTANCE 1
Symbol c:::, _ c:::,_ --
Time interval 1 second
Dynamics Sporting
Distance at 25 mph (40 km/h) 36 Feet (11 Meters)
Distance at
50 mph (80 km/h) 72 Feet (22 Meters)
Distance at 75 mph (120 km/h) 108 Feet (33 Meters)
& WARNING
Following other vehicles too closely increases the risk of a crash
and serious personal injury .
• Following other vehicles too closely, particularly at higher
speeds increases the risk of collisions and serious personal injury .
• Setting short distances to the traffic ahead reduces the time
and distance available to bring your vehicle to a safe stop and
makes it even more necessary to pay close attention to traffic.
• Always select a speed and distance to traffic ahead that is safe
and appropriate under the prevailing traffic, road, weather and
lighting conditions.
• Never rely on the distance control feature of ACC alone to
prevent rear-end collisions. Always be prepared to brake and take
evasive action to avoid collisions 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 slow your vehicle safely .
If closing speed is too high, you must
apply the brakes yourself to reduce the risk of a rear-end crash.
• Always select a greater following distance to the vehicle ahead
on wet roads than on dry roads.
• Always read and heed the information and
WARNINGS ~ & in
"Description" on page 139.
Controls and equip ­
ment
DISTANCE 2 DISTANCE 3 DISTANCE 4
~ __ c:::, __ c:::,
___ c:::,_
c:::, ____ c:::,
1.3 seconds 1.8 seconds 2.3 seconds
Standard Standard Comfortable
46 Feet ( 14 Meters)
66 Feet (20 Meters) 82 Feet (25
Meters)
95 Feet (29 Meters) 131 Feet (40 Meters) 167 Feet (51 Meters)
197 Feet (60 Meters) 249 Feet (76 Meters)
[ i] Tips
• Distance can be adjusted using the slider switch on the lever and
through Adaptive Cruise Control in the MMI menu~ page
150. The
settings in the MMI menu are stored automatically and allocated to
the remote control key.
• If the distance was not set in the MMI menu Adaptive Cruise
Control , it is reset to the factory setting DISTANCE 3 when the igni­
tion is turned on. •
I • •

-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. .,

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• "°" ""° 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