AUDI A6 2011 Owners Manual

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Adaptive Cruise Control
Speed and distance control system
App lies to veh icles: wi th Ad aptive Cruise Cont ro l
Descr iption
Th e Adaptive Cruis e Control driv er assistance pro gram is
a c omb in ed spe ed an d dista nce contr ol syst em .
Fig . 107 Front
bumper: Po sition of
radar sensor
Adaptive Cruise Control can help make driving more relaxed and less
t irin g, particular ly d uring long trips on inters tates or o ther highways
that are genera lly straight.
S et ACC to maintain a constant, legal travel speed between 20 and 95
mp h (3 0 -150 km/h) t hat is a pprop riate for prev ailing traffic co ndi­
tions. Select a following distance to the vehicle ahead and ACC w ill
adjus t you r speed t o mai ntain that dist an ce.
Adaptive Cruise Control has technical limitations that you must k now,
so p lease read this sectio n carefully, un de rstand how t he sys tem
wor ks and use it pro perly at all times.
How does it work?
You ca n operate the Adaptive Cruise Control using the lever on the
st eerin g wheel column=>
page 122, "H ow is the s peed stored ?" and
=>
page 125, " H ow is the distance (time inte rval) set?" .
Contro ls a nd e quip ­
m en t Vehicle
OP-eration
Driver information
Important information is bro ught up in the speedometer and in the
ins trumen t clus ter d is pla y as the ve hicle is be ing dr ive n=>
page 127,
"D river information" .
What is important for you to know
The Adaptive Cru ise Contro l is set with system-spec ified limits; that
is, as a driver, you will have to a djus t the s pee d and dis tan ce to t he
vehicle ahead in some in stances =>
page 130, "Driver intervention
promp t" and =>
page 131, "System lim itat ions".
ln. WARNING
Improper use of the Adaptive Cruise Control can cau se collisions,
other accidents and serious personal injury .
• Always remember that the Adaptive Cruise Contro l 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 mo ving, such as vehicles stopped in a traffic jam, a
stalled or disabled vehicle .
• Always remember that the Adaptive C rui se 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 bicy ­
cles .
• 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 powe r
that is only about 30% of the vehicle 's maximum braking ability .
Always be prepared to b rake and ta ke e vasive action to a void colli-
sions and other accident situations . .,
Vehicle care Do-it-yourselt service iTechnical data

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& WARNING (conti nu ed )
• Never allow the closing speed between you and other vehicles
to be so high that the Adaptive Cruise Control may not b e able to
slow your vehicle safely.
If closing speed is too high , you must
appl y the brake s yourself to r educe the risk of a rear-end crash.
• Never re st your foot on the accelerator pedal , especially when
the Adaptive Crui se Control is being used . Pre ssure on the acceler ­
ator will o verride the ACC braking fun ction and prevent the brakes
from being applied when ACC detects a situation when the brakes
must be applied .
• Never use Adaptive Cruise Control when you cannot drive safely
at a steady speed, including on city streets , on winding roads or
when road conditions are poor (for example, on ice, gravel, in fog,
heavy rain or on wet roads that incre ase the risk of hydroplaning ).
• The radar sensor's
vision can be reduced by rain, snow and
heavy road spray. These and simila r conditions can p revent vehi­
cles up ahead from b eing accurately detect ed and in some cases
they may not be detected at all. Do not use ACC when the rad ar
sen sors cannot ac curately detect vehicle s moving ah ead of you in
traff ic.
• Alway s turn off Adaptive Cruise Control when ente ring turn
lanes, exit lanes and construction zones or in similar situations
becaus e the vehicle will automatic ally a ccelerate to the stored
speed when the road ahead is clear .
• To prevent unintended operation, always switch ACC off when
it is not being used.
[ i ) Tips
• For safety reasons, the stored speed is deleted when the ignition
is tu rned off.
• The Electronic Stabilization Program (ESP) and the Anti-Slip Regu­
la tion (ASR) cannot be dea ct iv a te d w he n t he A dapt ive Cruise Co ntr ol
is switched on. If the ESP and the Anti -S li p Reg ulation (ASR) has been deactivated and yo
u then sw itch on the Adapt ive Cr uise Contro l, th e
ES P fu nction w ill als o be a ct iv a te d a utom atically.
• Damage caused by accidents and some minor collisions can affect
t he rad ar sensor settings and c ause the system to malfunction o r
switch off completely .
• Th e radar s ensor cover is heate d. In w in ter cond itions, you sho uld
st ill check befo re dr iv ing to make sur e it is free of ice and snow. If
neces sary, cle an the area ne ar the r ad ar sensor carefull y::::>
page 119,
fig. 107 .
• T o ensure th at th e radar sensor i s not bl ocke d , fo reign obje cts
(e .g. stickers, larger license plate mounts, add-on parts) must not
cover the area near the r ada r senso r::::>
page 119, fig. 1 07. Th e area
near the radar sensor must not be painted, either.
• F or Decla ration o f Compli ance to Uni te d Stat es FCC and I ndustry
Canada regulations::::>
page 349. •
Applies to vehicles : w ith Adaptive Cruise Control
How does Adaptive Cruise Control work?
Vehicles trav eling ahead are det ect ed with the aid of a
radar sensor.
Fig . 108 Basic prin­
cipl e dia gram : Radar
s en sor me asurement
rang e
Adaptive Cr uise Cont rol uses a radar sensor in the fron t of t he vehicle
::::> fig. 108 . The system has limitations::::>
page 131. Things that are
no t moving in yo ur lane and in your dire ct io n of trave l will not be
~

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detected. The senso r measures the distance to reflective s urfaces
t h at m ust have a cert ain s ize. T he sys tem res ponds only aft er t he
dis tance measurement has been made.
If a measureme nt is not
poss ible, t he system cannot res pond and w ill not react to a vehicle o r
something else u p ahead.
Open road
When th e road is clear, t he Adaptive Cruise Con trol works like cru is e
co ntrol.
It m ainta in s a c onst ant ta rg et spee d sp ecif ie d by the dr ive r.
Driving in traffic
If a sl ower ve hicle dr iv ing ahead is detec ted, the A dap tive Cr uise
Control decele rates (within t he lim its of the system)=>
page 130,
"Driver interven tion promp t" and => page 131, "System lim itatio ns"
t o its speed and af ter adjus ting, tries to maintain the set d istance
from t he ve hicle ahe ad. Th e vehicle m ay temporari ly dr ive slower
t han the set s peed wh ile adjus ting=>
& in " Descr ipt io n" on
page 119 .
If th e vehicle in front acc ele ra tes, Ad aptive Cru ise Contr ol also a ccel­
erates up to the speed t hat you have set.
Situations requiring driver intervention
In some situat ions you will have to use the footbra ke to slow the
vehicle down in order to keep a sa fe distance from vehi cle in fro nt of
you or to avo id a rear -end co llision. I n this s ituation, a symbo l
a ppe ars and a war ning t one soun ds =>
page 13 0.
Passing another vehicle
If you move in to the passing lane and no ve hicle is detected ahea d,
the Adaptive Cruise Control accelerates to the speed you have set and
mai ntains it.
Overriding ACC
You ca n increase your spee d at a ny ti me by steppi ng on t he acceler­
ato r pedal. After you release the accelerator peda l, t he system
adju sts bac k dow n to the s peed yo u previously se t.
Controls and equip ­
ment Safety first
Reducing stopping distance
If the radar sensor de
tects tha t the dis tance to the vehi cle ahea d is
less than defined minim um distance, the brakes a re au toma tically
pre pare d fo r emer gency b rak ing by the driver . The brake pads are
moved very close to t he b rake discs wi thou t ac tually b rak ing t he
vehicle . This bra ke ass istant feature reacts more quickly to t he
dr iv er 's brak ing, and a lso wo rks wh en Ada ptiv e Cr uise Contro l is off .
T he stopping distance is reduced as a result of this advance b rak e
pre par at ion. Th is fu n ction does n ot p erform a ny eme rgency brak ing
maneuve rs by itself; t he d river must always app ly the brakes.
& WARNING
• 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 C ru ise Control m ay 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.
[I) Tips
Please note that the amo unt o f acce leration the Ada ptive Cr uise
C on trol uses depe nds on t he Dist ance se tt ing se lec ted . DIS TA NCE 1
gives you accelerat io n that is dynamic and spo rty . DISTANCE 4, on the
o th er h an d , gives more mo derat e accelera tion. Fo r mo re info rm at ion
about the time intervals=>
page 125, "H ow is the distance (time
interva l) set ?".
• Please note that if the Adapt ive Cru ise Control has begun b raking
t he vehi cle and t he dr ive r ch oose s to brake the vehicle additi onally,
t he brakes may fe el "hard". Thi s is s imply due to the press ure build ­
up of the initia l bra king .
• Adaptive Cr uise Contro l is sw itched off afte r pressing the foot­
br ak e. Th e speed saved up this poin t ca n be resu med. T o resume the
saved speed, release t he brake pedal and p ull the control lever _.,
Vehicle care Technical data

-Adaptive C ruise Cont rol .J':fl..__..,____ _____________ _
toward you~ page 124, "Turning Adaptive Cruise Control off
temporari ly". •
Applies to ve hicles : w ith Adap tive Cru ise Contro l
Switching the system on and off
Switching the system on
-Pull the lever to position (D => fig. 109.
Sw itching the system off
F ig. 109 Contro l
lever: Sw itching on
and off
- Press the lever to position@ (latched) .•
A pplies to veh icles : wit h Ada ptive Cruise Control
How is the speed stored?
Fig. 110 Cont ro l
l ever: S tori ng speed
With th e syst em 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
!SETI button => fig . 110 to store the desired
speed .
After the I SET I button is released, the current speed is stored and
maintained .
The saved speed is now shown in the LED disp lay in the speedometer
by one or two illuminated red light diodes~
page 127. At the same
time, the saved speed is also shown for a short time in the Informa­
tion line~
page 129.
[I) Tips
For safety reasons, the s tored speed is erased when the ignit ion or
the ACC is turned off .•

Adaptive Cruise Control IJI ____________ ___,__ __ ____.
App lies to vehicles : with Adaptive Cruise C ont rol
Changing stored speed
The speed can b e chang ed without touc hing th e acc eler ­
ator or brake p edal.
Increasing speed
Fig . 111 C ontrol
le ver: Cha ng in g speed
- Press the lever briefly upwards 0 => fig . 111. US A
models: the speed increases by abo ut 2 .5 mph . Canada
mode ls: spee d wi ll increase by one mar k on the speedom­
eter sca le.
- Press the lever u pwards
0 and hold it . As long as you ho ld
t h e lever dow n, the light diode disp lay in the speedo meter
L E D d isp lay in the speedometer moves fo rward and t he
speed is increased.
Reducing speed
- Pres s the lev er briefly d ownwards Q . USA mod els : the
speed decreases by 2 .5 mp h. Ca nad a mo dels: sp eed will
decrease by one mark on t he speedo meter sca le .
Con trol s and equ ip­
m ent Vehicle
OP-eration
-Press the lever downwards Q and hold it. As long as you
ho ld the lever down , the ligh t dio d e d isp lay in t he speed­
ometer LE D display moves backward a nd the speed is
reduced .
After releasing the lever, the system regu la tes t he speed to the value
just set .
After each adjustment , th e newly-set sp eed is s hown fo r a sho rt tim e
in t he Informa tion line ~
page 129.
& 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 f or existing road, traffic or weather
condition s.
• Alway s read and hee d the information and WARNINGS~
& in
" Des cription " on
page 119 .
W Tips
You ca n increase your speed at any time by stepping on the acceler ­
ator pedal. After yo u re lease the acce le rator peda l, t he system
adjusts back down to the speed yo u previously set . A new desired
speed can be stored at any tim e by p ressing the [SET ) button
~ page 122, fig . 110 . •
Vehicle care Do-it-yourselt service iTechnical data

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Applies to veh icles : w ith Adapt ive C ru ise Contro l
Turning Adaptive Cruise Control off
temporarily
In some situations it makes sense to turn Adaptive Cruise
Control off tempo rarily.
Turning control off temporarily
Fi g. 112 Con trol
le ver: Turni ng Ada p·
tiv e C ruise C ontrol off
te mpor aril y
-To sh ut off t he control w it h the save funct ion, ei ther
depress the brake p edal, or
- Press the lever i n the direction of the arrow @=> fig. 112.
Reactivating control
- To resu me the speed and distance contro l, re lease t he
b ra ke pedal a nd press the lever in the directio n of t he
arrow (D.
& WARNING
Imp roper use of the Adapti ve Cruise Control can cause collisions ,
other accidents and seriou s per sonal injuries .
• Never re sume the sto red speed if the speed is too high fo r
prevailing road, traffic or weather condition s.
[I] Tips
When the system is turned off tempo rari ly , th e speed set at that time
i s sto red. •

Adaptive Cruise Control -
----------------
App lies to vehicl es: wi th Adaptive Cru ise Con trol
How is the distance (time interval) set?
Distance con be set in four stages.
Incre as ing dist anc e
Fig . 113 Contro l
l ever : Sett ing distance
- Push the slider switch on ce to the r ight 0 ==> fig . 113 . The
distance currently set is shown for 3 seconds in the instru ­
ment cluster display.
- Push the slider switch
again to the rightG)to increase the
distance by one step.
Symbol
Dynam ics
Distance at 25 mph (40 km /h )
Di sta n ce at 50
mph (80 km /h )
Distance at 75 mph (120 km /h)
Controls and equip ­
ment Safety first
DISTANCE 1
c::::,
_ c::::, _ - -
1 second
Sporting
36 Feet ( 11 Meters)
_ ...
72 Feet (22 Meters)
108 Feet (33 Meters)
R educing di stance
Push the slider switch onc e to the left Q. The d istance
currently set is shown for 3 seconds in the instrument
cluster display.
Push the slider switch
again to the left Oto decrease the
distance by one step.
Th e d istance at wh ic h the Adaptive Cruise Control fo llows a vehicle in
front is determined by
time intervals. A time interval to a vehicle in
front is established and maintained. This produces a speed-depen­
dent interval. The higher the speed, the greater the safety interval in
feet (meters)
=> & .
For example, if the interval DI STA NCE 3 is set, a vehicle in front is
followed at a time interval of 1.8 seconds.
For a speed of 50 mph (80 km /h ) this would be equ ivalent to a
distance of 131 feet (40 m ete rs) to the veh icle in front .
T he distances giv en here are nominal va lues. The vehicle speed may
exceed o r fall short of these target speeds , depending on the driving
situation and the d riving style of the vehicle ahead .
DISTANCE 2
~-- c::::, _ -
1.3 seconds
Standard
95 Feet (29 Meters)
144 Feet (44 Meters)
DISTANCE 3
~ ___ c::::,_
1.8 seconds
Standard
66 Feet (20 Meters)
131 Feet (40 Meters)
197 Feet (60 Meters)
DISTANCE 4
c::::,_ -- _c::::,
2.3 seconds
Comfortable
82 Feet (25 Meters)
16 7 F eet (51 Me ters)
249 Feet (76 Meters)
~
Vehicle care Technical data

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How your vehicle responds when accelerating and follow ing other
veh icles wi th AC C opera ting c an be ad apte d to you r person al wishes
through diffe rent driving programs. Depend ing o n which driving
pro gram an d which distance you choose, you r veh icle w ill respon d
Settings DISTANCE
1
Symbol for time interval c;:::::::::,_c;:::::::::, __ _
Support for: Bu mp er-t o-b um per
tra ff ic, br isk driving
Response in " dynamic " driving program 1
Response in "standard " driving program 2
Response in "comfort " driving program 3
(dy namic) 1 ----- 2 ----- 3 ----- 4 ----- 5 (comfortable)
& WARNING
Following other vehicles too closely increases the risk of a crash
and serious personal injury .
• Following other vehicles too closely , particularly at higher
s peeds increase s 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 , weathe r 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
ev asive action to avoid collisions and other accident situations .
• Never allow the closing spe ed between you and other vehicles
to be so high that the Adaptive Cruise Control may not be able to more dynamically or more com
fortab ly when accelerating a nd
bra king. The set ting is se lec ted t hrough the MMI m enu Adaptive
Cruise Control =>
page 131, "MM I sett ings" .
DISTANCE
2 DISTANCE 3 DISTANCE4
~- _ c;:::::::::,_ - c;:::::::::,_ - _ c;:::::::::,_
c;:::::::::,_ - - _c;:::::::::,
Bum p er-to- bum per Bum per -to- bum per Se co nd ary r oads, tr ail er
tra ff ic, "keep ing pace" traff ic, "k eep ing pace" o perat ion
c omf ortabl y comfort ab ly
2 2 3
3 3 4
4 4
5
&, WARNING (co ntinued )
slow your vehicle safely . If closing speed is too high, you must
apply the brakes yourself to reduce the risk of a rear-end cra sh .
• 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 119.
[I) Tips
Th e d istance sett ing is reset to the facto ry defau lt DISTANCE 3 the
next time the ignition is turned on .•

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Driver information
Applies to veh icles: with Adaptive C ruise Cont ro l
Displays in the instrument cluster
Depending on the driving situation, driver information is
displayed in the instrument cluster .
@ Speedometer and indicator light display
@ Display in the instrument cluster
Fig. 114 O vervi ew
in strume nt clu ster
@ Speedomet er and indicator light display
Important information concerning vehicle operation with Adaptive
Cru ise Control is shown in display area @. T he desired speed you set
is indicated in the speedometer (L ED lights around the edge).
Th e ind ic ator lig hts show whether the sys tem has detec ted a ve hicle
traveling ahead.
@ Display in the instrument cluster
In d isp lay area @ information from the navigation system * and the
t rip compu ter is displayed in a ddition to info rmation abou t Ad apt ive
Cru ise Control.
You can select among the different information by repeated b rief
taps on the
I RESE T! but ton on the windshield w iper lever~ page 35,
"Operation" .
Contro ls a nd e quip ­
m en t Vehicle
OP-eration
Certain pieces of in format ion in the bottom part of the display are not
show n perm anent ly . In fo rmat ion is dis played on ly if you set or
change the speed setting, change the t ime interval, when messages
are displayed or if the Adaptive Cr uise Control is tu rned off for safety
reasons .•
App lies to v ehicle s: with Adaptive C ru ise Cont rol
Display in the speedometer
Desired speed
Fig. 1 15 Di spl ay in
th e sp eedometer
The des ired speed set by the driver is displayed by a red LED.
If the desired speed was set between two lines o n the speedometer
using the
[ SET ! button, the two closes t light em itting diodes will
come on~ fig. 115 .
The system allows on ly speeds to be set between 20 to 95 mph (30
to 150 km/h) to be set. This speed range is fa int ly ill umina ted in the
speedometer (L ED lights) .
Indicator lights (symbols)
• ""~ Open ro ad: The indicator light 11 "~ shows that ACC is active
and that no moving veh icle has been detected with in range of the
radar sensor up ahead in your lane of travel. The set speed is main-
tained. .,,_
Vehicle care Do-it-yourselt service iTechnical data

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• .::::::,,,,,.::::::, Driving in traffic: The indicator light .::::::,11 .. .::::::, shows that a
veh icle moving in yo ur lane of tr ave l has been de te cte d up fron t in
your lane o f travel. Your speed is adjusted accord ing to the speed of
the vehicle up front. ACC accelerates and brakes automatically within
the system's capabilit ies.
• .::::::,,,,,.::::::, Driver intervention prompt : The red flashing w arning
light
.::::::,11 .. .::::::, means Request for driver to as sume control. You as the
driver must slow the vehicle with the foot brake . The symbo l
.::::::,11 .. .::::::,
tells you that the Adapt ive C ruise Contro l is not able to slow the
vehicle down eno ugh to keep a enough distance to the vehicle in front
of you. A warning to ne w ill a lso sound when the symbol appea rs . For
more info rmation about t he dr iver inte rvention prompt~
page 130.
& WARNING
Improper use of the Adaptive Cruise Control feature s and inatten­
tion can lead to an crash and serious personal injury.
• 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 ri sk of a rear-end crash .
• Always sele ct a greater following dis tance to the vehicle up
ahead on w et roads than on dry road s.
• Always read and heed the information and WARNINGS ~
& in
" Description " on
page 119.
[ i ] Tips
• If you use the accelerator to go faster tha n the speed of the
vehicle ahead of yo u, the drive r intervention prompt will not be
accompanied by a warning to ne.
• If the spee d you previously set is ex ceeded, t he i nd ic ato r light in
the speedometer will sw itch off .•
A pp lies to veh ic les: with Adapt ive Cru ise C ontrol
Display in the instrument cluster
Fig . 116 Di splay in
the instrum ent cluster
Scr oll throug h the available information displays by br iefly tapping
the
I RESE T) button at the end of the windshield w iper leve r. Yo u can
select info rmation from the tr ip comp uter, naviga tion system * or
Adaptive Cr uise Contro l.
© Vehicle symbol
® Distance
© Status
© Vehicle symbol
The ve hicle symbol indi ca tes whether the system h as de te cted an
object trave ling in front.
• Vehicle outline : Open road, no vehicle ahea d.
• White ve hicle: A vehicle is detected ahead.
• Red vehicl e: Request for dr iver to assume control.
® Distance
Us ing the a rrows and scale , you can det ect how fa r it is to the v ehi cle
in front of you.
• Open road : No arrow appea rs when the veh icle is on a n open ro ad
and there is no ve hicle ahead. .,,_