2009 AUDI S6 brakes

• .___A_ d_a_ p:- t_iv _ e_ C_ r_u _is _ e_C_ o_ n_ t_ r_ o_ l --------------------------------------------
How your vehicle responds when accelerating and fol lowing other
veh ic les w ith ACC operat ing can be a dapt ed to your persona l wishes
through different driving programs. Depending on which driving prog ram a nd whic h dis tance you choose, your vehicle will respond
Settings DISTANCE 1
Symbol for time interval
~ -~---
more dynamica lly or more comfortably when accelerating and
b raki ng. T he setting is selecte d throug h the MM I menu Adaptive
Cruise Control =>
page 139, "M M I settings".
DISTANCE 2 DISTANCE 3 DISTANCE4
~-- ~-- ~--- ~- ~---- ~
Support for: Bumper -to-bumper Bumper -to-bumper Bumper -to -bumper Secondary roads,
traffic, brisk driving
Response in "dynamic " driving program
1
Response in "standard " driving program 2
Response in "comfort " driving program 3
(dynamic) 1 ----2 ----- 3 ----- 4 ----- 5 (comfortable)
& WARNING
Following other veh icles too clo sely increases the risk of a crash
and serious personal injury .
• Following other vehicles too closely , parti cularly at h igher
speeds increases the risk of collisions and serious personal injury.
• Setting short distan ces 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 distan ce control feature of ACC alone to
p revent rear-end collisions . Alw ays 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 traf
fic, "keeping pace" traffic, "kee ping pace" trai ler operation
co mfortably comfortably
2
2 3
3 3 4
4 4
5
&, WARNING !continued )
slow your vehicle safely . If closing speed is too high, you must
apply the brakes your self to reduce the risk of a rear -end crash.
• Always select a greater following distance to the vehicle ahead
on wet road s than on dry roads.
• Always read and heed the information and WARNINGS =>
& in
" De script ion " on
page 127 .
[ i ] Tips
The distance setting is reset to the factory default DISTANCE 3 the
n ext t ime the ign ition is turne d on.•

• ..__A_ d_a...: p:,..._ ti_v _ e_ C_ ru_ is_ e_ C_ o_n_ t_ r_ o _ l ___________________________________________ _
• <0111,c::::, Driv ing in traffi c: The indicator light '°"'''° shows that a
ve hicle moving in your lane of travel has been de tec ted up front in
your lane of travel. Your speed is adjusted according to the speed of
the vehic le up front . ACC accelerates and brakes automatically
within the system's capabilities.
• -011 ,,-0 Dr iv e r intervention prompt : The red flashing warning
light
-011 .. ~ means Request for dri ver to as sume contr ol. You as the
driver must slow the vehic le with the foot brake . The symbol
<0 1111<0
tel ls you that the Adaptive Cruise Control is not able to slow the
vehic le down enough to keep a enough distance to the vehicle in
front of you. A warning tone will also sound when the symbo l
appears . For more information about the driver intervention prompt
::;, page 138.
& WARNING
Improper use of the Adap tive Crui se Contro l features and inatten ­
tion can lead to an crash and serious personal injury .
• Never allow the closing speed betw een you and other veh icles
to be so high that the Adapt ive Cruise Control may not be able to
slow you r vehi cle saf ely . If clo sing speed is too high , you mu st
apply the brake s yourself to reduce the ri sk of a re ar-end cra sh .
• Always sele ct a greater follo wing dist ance to the vehi cle up
ahead on wet roads than on dry road s.
• Alway s re ad and heed the information and WARNINGS::;,
& in
"De scription " on
pag e 127 .
[ i ] Tips
• If you use the acce lerato r 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 w ill sw itc h off. •
App lies to vehic les: w ith Ad apt ive Cruise Contro l
Display in the instrument cluster
Fig. 1 32 D isplay i n the
i n strum ent c lust er
Scroll through the availab le in formati on displays by briefly tapping
the (RESET] button at the end of the windshie ld wiper lever. You can
se lect information from the trip computer, navigation system* or
Adaptive Cruise Control.
© Vehicle symbol
® Distance
© Status
© Vehi cle s ymbol
The vehicle symbo l indicates whether the system has detected an
object traveling in front .
• Vehicle outline : Open road, no vehicle ahead .
• Wh it e v ehi cle: A vehic le is detected ahead.
• Red vehicle: Request for driver to assume co ntrol.
® Distance
Using the arrows and scale, you can detect how far it is to the
vehic le in front of you.
• Open road : No arrow appears when the vehicle is on a n open
road and there is no vehic le ahead .

• ..__A_ d_a...: p:,..._ ti_v _ e_ C_ ru_ is_ e_ C_ o_n_ t_ r_ o _ l ___________________________________________ _
tained. The ACC system is not switched off, and increased attention
to the traffic situation is absolutely necessary. The following may be
reasons why the message
ACC functionality limited appears:
• The ACC sensor is dirty . The ACC system is not reacting, or is not
reacting correctly, to moving vehicles up ahead in your lane of
travel.
• There may be very light traffic on and there is nothing that marks
the side of the road (for example, guard rails, traffic signs, trees). As
soon as a moving vehicle up ahead is detected again, ACC becomes
active again and the message disappears .
The ACC sensor is located in the area under the front license plate.
If the ACC sensor is dirty or blocked, clean the area to restore system
operation.
ACC not available
The text message ACC not available appears, for example, if the
temperature of the brakes is excessive . Adaptive Cruise Control is
temporarily not available. A warning tone sounds as a reminder.
ACC not available!
The text message ACC not available! appears in the event of a
malfunction. Adaptive Cruise Control is turned off. A warning tone
sounds as a reminder. Have the system inspected by a qualified
dealership .
ACC sensor blocked !
The text message ACC sensor blocked ! appears when the ACC
System can no longer accurately detect vehicles moving up ahead
in your lane of travel. Adaptive Cruise Control is turned off. A
warning tone a lso sounds as a reminder.
To decide whether it is necessary to switch off the ACC (ACC sensor blocked
!) or if it is only a temporary condition (ACC Functionally
limited), the system will also takes into consideration the outside
temperature and/or the windshield wiper operation.
The ACC sensor is dirty or blocked (e.g. leaves, snow) . The
ACC sensor is located in the area under the front license plate .
If the ACC sensor is dirty or blocked, clean the area to restore system
operation.
EPB activation
Th e text message EPB activation appears if emergency braking was
manual ly initiated with the Electromechanical Parking Brake (EPB).
The Adaptive Cruise Con trol is turned off . This is accompanied by a
warning tone.
Speed
The set speed in mph (Canada km/h) always appears when saving or
changing the speed in Adaptive Cruise Control~
page 130 , "How is
the speed stored?" and~
page 131 , "Changing stored speed".
Selector lever position!
The text message Selector lever position! appears when the
selector lever is moved to position
N. In this position, Adaptive
Cruise Control is not available. •
Applies to vehicles : with Ada ptive Cruise Cont rol
Driver intervention prompt
The driver intervention prompt calls on the driver to take
over the situation.
Fig . 134 Instrument
cluster: Driver inter-
vention prompt
~

• ..__A_ d_ a-:.. p_t _iv _ e_ C_r_ u_ i _s _ e_ C_ o_n_ t_ r_ o_ l _____________________________________________ _
Sav ing s etting s
Your individual settings are automa tically saved and assigned to the
remote control key being used {remote key storage). If the key is
given to another person, the saved settings remain as they are. •
System limitations
Applies to vehic les : with Adapt ive Crui se Co ntro l
General information
The radar sensor has limits that the driver must know to
b e able to use AC C properly.
The Adaptive Cruise Control works within limits that are also re lated
to radar sensor range and sight d istance. In some situations ACC
may react unusually or late from the driver's point of view. There ­
fore, always be attentive to what is happening around you and
a lways be ready to in tervene, if necessary:
• when driving around curves=>
page 140
• whe n vehicles up front are not in line with y our vehicle
=>
page 141
• when other vehicles a re changing lanes => page 141
• when other vehicles are difficu lt to detect => page 141.
• when vehicles up ahead are not moving or obstacles are in your
travel lane=>
page 141
& WARNING
The radar sensor's function and range can be r educed by rain ,
sn ow and he avy spray. Moving vehicles up ahead may not be
promptly det ected or ma y not be det ected at all.
• Alway s pay careful attention to the traffi c situatio n a nd be
ready to intervene and be ready to take complete contr ol when ­
e ver ne ces sary . •
Ap plies to veh ic les: with Ad apt ive Crui se Contro l
When driving around curves
k::;=========== =,!
~
[J
Ent ering a cur ve
Fi g. 13 6 Veh icle
e nteri ng a curv e
Fig. 137 Ve hicle
l ea ving a curv e
When entering a curve, the Adaptive Cruise Control may react to a
vehicle in the next lane and apply the brakes in your vehicle
=> fig. 136. The braking action can be overridden by depressing the
acce lerator pedal.
Lea vin g a c urve
At the end of very long curves, ACC 's predictive lane reading can
cause ACC to react to another vehicle in the next lane and apply t he
brakes on your vehicle=> fig. 137 . T he braking action can be over ­
ri dden by depressing t he accelerator peda l.•

_______________________________________________ A_ u_t _o _m_ a_ t_ i_ c _ t_r _ a _n _s_ m_ i_ s _ s_ i_ o _ n _ ___._
R -Reverse
The transmission will automatically select the lowest gear ratio
when you shift into reverse .
Select
R only when the vehicle is at a full stop and the engine is
running at idle speed=>
& in "Driving the automatic transmission"
on
page 155 .
Before you move the selector lever to R, press both the button in the
handle of the selector leve r
and the brake pedal at the same time .
When the ignition is on , the backup lights illuminate when the
selector lever is moved into
R.
N -Neutral
The transmission is in neutral in this position . Shift to this position
for standing with the brakes applied=>
page 157.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake befor e and while moving the
lever out of
N.
D -Normal position for driving forward
Position Dis for normal city and highway driving. It ranges from zero
to top speed and all gears shift automatically , depending on engine
load , driving speed and automatically selected shift programs.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the foot brake before and while moving the
lever to
D out of N.
In certain circumstances it may be advantageous to temporarily
switch to the manual shift program to manually select gear ratios to
match specific driving conditions=>
page 159.
S -Sport position
Select this position for sportier performance . In this position, the
transmission will not upshift as soon, allowing the vehicle to use the
increased power available at higher engine speeds to achieve live­
lier acceleration.
Con tro ls and eq uip­
ment
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the foot brake before and while moving the
lever to
S out of N.
& WARNING
Read and follow all WARNINGS => & in "Driving the automatic
transmission" on
page 155.
0 Note
Coasting downhill with the transmission in N and the engine not
running will result in damage to the automatic transmission and
possibly the catalytic converter. •
Applies to vehi cle s: with 6 -speed automati c tra nsm is si on
Automatic Shift Lock (ASL)
The Automatic Shift Lock safeguards you against acciden ­
tally shifting into a forward or the reverse gear and
causing the vehicle to move unintentionally.
Fig. 159 Shift gate:
selector lever lock
positions and interlock
button highlighted
The selector lever lock is released as follows:
- Turn the ignition on.
Vehicle care I I irechnical data

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Before you move the selector lever to R, press both, the button in the
handle of the selector lever
and the brake pedal at the same time .
When the ignition is on, the backup lights illuminate when the
selector lever is moved into R.
N -N eutr al
Sh ift to this position for standing with brakes applied=> page 164.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake before and while moving the
lever out of
N .
Do not use N for coasting downhill.
D -Normal dr iving po sition f or forward
Depending on the load on the engine, vehicle speed and the
dynamic control program, the transm ission will select the
optimal
gear ratio.
In certain circumstances it may be advantageous to temporarily
switch to the manua l shift program to manually select gear ratios to
match specific driving conditions=>
page 166.
When the vehicle is s tationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake before and while moving the
lever to
D ou t of N.
S -Spor t p osition
Select this position for sportier performance. In this position, the
transmission wil l not upshift as soon, allowing the vehicle to use the
increased power avai lable at higher engine speeds to achieve live ­
lier acceleration.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the foot brake before and whi le moving the
lever to
S out of N .
& WARNING
Re ad a nd follo w all WARNIN GS=> & in "Dr iv ing th e multitr oni c®"
on
page 16 2.
0 Note
Coasting downhill with the transm ission in N and the engine not
operating will result in damage to the automatic transmission and
possibly the catalytic converter. •
Applies to vehicles: with multitronic® Continuous ly Variable Transmission (CVT)
Automatic Shift Lock (ASL)
The Automatic Shift Lock safeguards you against acciden­
tally shifting in to a forward or the reverse gear and
causing the vehicle to move unintentionally.
F ig . 167 S hift gate:
se lect or l ever loc k
pos it ions a nd int erl ock
butt on high lighted
The selector lever l ock is rel eased as f ollows :
T u rn the ignition on .
Step on the brake peda l.
At the same time press and hold
the interlock button on the side of the gear selector knob
=> fig. 167 with your thumb until you have moved the
selector lever to t he desired position.
~

The direction in which the driver wishes to travel is determined with
t he aid of the steering angle and vehicle speed and is continua lly
compared with the actual behavior of the vehicle. If the two do not
match, for example, when the vehic le starts hydrop laning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the prob lem.
The vehicle is then stab ilized by the forces acting on the whee l
during braking. If the vehicle is
oversteering (rear tends to skid out
of the turn), the brakes are mainly app lied on the wheel that is on
the outside of the curve. In the case of a vehicle that is
understeering
(tendency to sl ide out of the curve), the brakes are applied at the
rear wheel that is on the inside of the curve . An acoustic signal indi­
cates when ESP brake application cuts in
~ & .
The system operates across the entire speed range in combination
with the ABS system
~ page 266 . If the Anti -Lock Brake System
(ABS) malfunctions, the ESP wi ll be out of action as well.
Ac tivat ing
When you turn on the eng ine, ESP will automatically be activated
and will perform a se lf -test . As soon as the test is comp leted, the
system is in norma l operating mode.
You can activate a deactivated ESP or deactivated ESP/ASR if required by pressing the~
page 262, fig. 232 button . When they are
activated, the message
E S P/AS R on appears briefly in the display.
D eactiv ating
The ESP should normally be activated al l the time . If necessary, you
can deactivate An ti- Slip Regulation (ASR) or the E lectronic Stabiliza ­
tion Program (ESP) by pressing the button~
page 262, fig. 232 .
• Dea ct iv at ing A SR: Tap the button . In certain exceptional situa ­
tions (e.g. driving with t ire chains) , the Anti-Sl ip Regulation (ASR)
can be deactivated ~
page 264. The message ASR off appears in the
display as we ll.
• Dea ctiv at ing E SP/ASR Press the button for more than 3 seconds.
With the ESP/ASR deactivated, the ESP check light comes on, see
Controls and equip­
ment Safety first Vehicle operation
In
te llig ent tec hn olo gy
~ page 18 . The message ES P sw itched off appears in the disp lay as
we ll.
& WARNING
The Electroni c Stabili zation Program i s never thele ss subject to the
la ws o f physics . It is p articularl y import ant t o pay a ttent ion t o th is
f a ct on wet and slippery road s. It is ther efore important tha t y ou
a lw ays a dapt your dr iving to the c ondit ion of th e ro ad and t raffi c
c ondition s. Do n ot allow the inc rea sed safety pro vided b y th e Elec ­
tr on ic S ta bili zatio n Pr ogram sys tem to lull you in to acc epting
add iti onal safet y risk s. C
Electronic differential tock (EDL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
Gener al note s
The electronic differential lock (EDU helps the car to start moving,
accelerate and c limb a gradient on surfaces providing poor or
almost no grip . Without EDL, this would be difficult, if not impos ­
sib le .
How th e sys te m wo rk s
The EDL operates automatical ly . It monitors the rotational speed of
the drive wheels on an axle with the he lp of the ABS sensors
~ page 266 . If a noticeable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground
on
one side),
the spinning wheel is braked, thereby transferring power
to the other drive wheel or whee ls (a ll -whee l drive) . Th is is done up
to a speed of about 60 mph ( 100 km/h). Noises from the brake
system signal that wheel spin is being control led .
Dr iving off
When driving off , always be sure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface
Iii>
Vehicle care Do-it-yourself service Technical data

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
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 21. •
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 266, 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 262, fig. 232 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 262, fig. 232. With the ASR deactivated,
the ESP check light comes on, see=>
page 18. 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 .