brake AUDI S6 2015 Owner's Manual

86 Audi adaptive cruise control and braking guard
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.
Audi adaptive cruise control
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 88 Detection range
What can adaptive cruise control do?
The adaptive cruise control system uses video,
radar and ultrasou nd. Moving vehicles ahead
can be recognized up to about 650 feet (200 m) away.
On open roads w ith no traffic, adaptive cruise
control works like a regular cruise control sys­
tem. The stored speed is maintained. When
approaching a moving vehicle detected up
ahead, the adaptive cruise control system au­
tomatically s lows down to match that vehi­
cle's speed and then maintains the distance
that the driver previous ly stored. As soon as
the system does not detect a vehicle up
ahead, adaptive cruise control accelerates
back up to the stored speed.
In stop-and-go traffic, adapt ive cru ise control
can brake until the vehicle stops and acceler­
ate again under certain conditions and if this
is possible within the system's limits and ca­
pabilities¢
page 88. Adaptive cru ise control
will not make an emergency stop .
Which functions can be controlled?
When you switch adaptive cruise contro l on,
you can set the current speed as the "control speed" ¢
page 86, Switching on and off.
When driving, you can stop cruise control
¢
poge 88 or change the speed¢ page 87
at any time.
You can also set the distance to the object
ahead and set the adaptive cruise control driv­
ing program ¢
page 88.
Switching on and off
Applies to vehicles: with Audi adaptive cruise control
Fig. 89 Se lector lever: switching on/off
Fig. 90 Instrument cluste r: adaptive cruise control
You can set any speed between 20 mph and
95 mp h (30 and 150 km/h).
Ind icator lamps and messages in the instru­
ment cluster d isplay inform you about the cur­
rent system status and settings.
An additional indicator appears in the Head­
up D isplay*.
Switching adaptive cruise control on
.,. Pull the lever toward you into position (D
¢ fig. 89. ACC standby appears in the in­
strument cluster display.
Setting the speed and activating
regulation
.,. To set the current speed, press the ISETI but­
ton¢
fig. 89. The set speed is shown in the 1111-

Audi adaptive cruise control and braking guard 87
tachometer @and is also shown briefly in
the display @
c::> fig. 90.
.. You must also press the brake pedal when
the vehicle is stopped.
Switching adaptive cruise control off
.. Push the lever away from you into position
@ until it clicks into place. The message
ACC off appears.
@ Indicator lights
II-Adaptive cru ise contro l is switched on.
No vehicles are detec ted up ahead. The stored
speed is ma intained.
• -A moving vehicle is detected up ahead.
The adaptive cruise control system regulates
the speed and distance to the moving vehicle
ahead and acce lerates/brakes automatical ly.
fit -Adaptive cruise contro l is switched on. A
mov ing vehicle up ahead was detected. Your
vehicle remains stopped.
• -When automatic brak ing is not able to
keep enough distance to a previously detected
moving vehicle up ahead, you must take con­
trol and brake
c::> page 89, Prompt for driver
intervention.
© Display
If adaptive cruise control is not shown in the
d isp lay, you can call it up with the multifunc­
tion steering wheel buttons
c::> page 24.
Based on the symbols in the d isplay, you can
determine if the system is maintaining a dis­
tance to the vehicle ahead and what that d is­
tance is.
No vehicle -No veh icle ahead was detected .
White vehicle -A vehicle ahead was detected.
Red vehicle -Prompt for the driver to take ac­
tion
c::> page 89.
Both arrow s on the scale© indicate the dis­
tance to the vehicle ahead. No arrow appears
~ when the vehicle is on an open road and there
0
~ is no object ahead . If an object is detected
:;, ahead , the arrow moves on the scale .
"' ,....,
"' ,....,
The green zone on the scale shows the stored
distance. For information on changing the
stored distance, refer to
c::> page 88 . If the
distance selected is too close or may soon be­
come too close, the arrows move into the red
zone on the sca le .
A WARNING
Improper use of the adaptive cruise con­
trol can cause collisions, other accidents
and serious personal injur ies .
- Pressing the
!SET ! button when driv ing at
speeds below 20 mph (30 km/h), will au­
tomatically accelerate the vehicle to 20
mph (30 km/h), which is the minimum
speed that can be set.
(D Tips
-If you switch the ignit ion or the adaptive
cruise control off, the set speed is erased
from the system memory.
- Th e elec tronic stab ilization control (ESC)
and the anti-slip-regulation (ASR) are au­
tomatically turned on when the adaptive
cruise control is turned on. Both systems
cannot be turned off if the adaptive
cruise contro l is turned on.
Changing the speed
Applies to veh icles: with Audi adaptive cruise control
0
f
• 0
Fig. 91 Selector lever: chang ing the speed
.. To increase or reduce the speed in incre­
ments,
tap the lever up or down.
.. To increase or reduce the speed quickly,
hold
the lever up or down until the red LED @
reaches the desired speed
c::> page 86,
fig .90.
~

88 Audi adaptive cruise control and braking guard
Following any changes, the new stored speed
will be disp layed briefly in the disp lay @
r::!) page 86, fig. 90 .
Driving in stop-and-go traffic
Applies to vehicles: with Audi adaptive cruise control
The adaptive cruise control system also as­
sists you in stop-and-go traffic. If a previous
detected vehicle ahead stops, your vehicle will brake to a stop, within the limits of the sys­
tem.
• To resume driv ing with adaptive cruise con­
trol, tap the accelerator pedal or
• Pull the lever toward you into posit ion @
r::!) page 88, fig. 92 .
(D Tips
-If adaptive cru ise control is active and
your vehicle does not start driving as ex­
pected after pulling the lever once, you
can start out again by tapping the accel­
e rator pedal.
- If an obstacle is detected when your ve­
hicle starts driving, the system w ill
prompt you to take over¢
page 89.
Your vehicle will drive more slow ly when
starting. This may a lso happen in some
s ituations when no obstacle is apparent.
Interrupting cruise control
App lies to vehicles: with Audi adaptive cruise co ntrol
Fig. 92 Se lector leve l
Requirement: adaptive cruise control must be
switched on.
Overriding cruise control
• To accelerate manually, pull the lever to­
ward you into position@and hold it there.
The message
ACC override appears. Or
• press the acce lerator pedal.
• To resume cruise contro l, re lease the lever
or take your foot off the accelerator pedal.
Canceling cruise control while driving
• Move the lever into position @. The mes­
sage
ACC standby appears. Or
• press the brake pedal.
• To resume the stored speed, move the lever
into position @.
Canceling cruise control when stopped
• Push the lever away from you into position
@ . The message
ACC standby appears .
• To resume cruise contro l, press the brake
pedal and pu ll the lever toward you into po­
sition @.
_&. WARNING ~ -
Never resume the stored speed if the
speed is too high for prevailing road, t raf­
fic or weather condit ions.
Setting the distance
Applies to vehicles: wit h Audi adapt ive cruise control
Fig. 93 Selecto r lever : setting the distance
• Tap the switch to display the current set dis­
tance
<=> fig. 93.
• To increase or reduce the distance by incre­
ments, tap the switch again to the left or
r ight. The distance between the two vehicles
w ill change in the instrument cluster dis-
play .
IJII>

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Audi adaptive cruise control and braking guard 89
When approaching a moving vehicl e up ahead,
the adaptive cruise contro l system automati­
cally brakes to match that object's speed and
then maintains the stored distance.
If the ve­
hicle ahead accelerates, adaptive cruise con­
trol will also accelerate up to the stored
speed .
The higher the speed, the greater the distance
in yards (meters) ¢.&. . The
Distance 3 setting
is recommended .
The distances prov ided are specified values .
Depending on the driving situation and the
how the vehicle ahead is driving, the actual
distance may be more or less than these tar ­
get distances.
The various symbols for the time increments appear briefly in the information line @
¢
page 86, fig . 90 when you change the set ­
tings .
,::::::,_,::::::, ___ Distance 1: This setting corre-
sponds to a distance of 92 feet/28 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1 second.
,::::::, __ ,::::::, __ Distance 2: This setting corre­
sponds to a distance of 118 feet/36 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1.3 seconds .
,::::::, ___ ,::::::,_ Distance 3: This setting corre-
sponds to a distance of 164 feet/SO meters
when traveling at 62 mph (100 km/h), or a
time interval of 1.8 seconds .
,::::::, __ __ ,::::::, Distance 4: This setting corre-
sponds to a distance of 210 feet/64 meters
when traveling at 62 mph (100 km/h), or a
time interval of 2.3 seconds .
A WARNING
Following other vehicles too closely in­
creases the risk of collisions and serious
personal injur y.
- 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 obey applicable traffic laws, use
good judgment, and select a safe follow­
ing d istance for the traff ic, road and
weather conditions .
(D Tips
-Distance 3 is set automatically each time
you switch the ignition on.
- Your standard settings are automatically
stored and assigned to the remote con­
trol key being used.
Selecting the driving mode
Applies to vehicles: with Audi adaptive cruise control
.. Select the desired driving mode in dr ive se­
lect <=;>
page 100.
(D Tips
Your settings are automat ically stored and
assigned to the remote control key being
used.
Prompt for dr iver intervention
Applies to vehicles: with Audi adaptive cruise contro l
Fig. 94 Instrument cluster: req ues t fo r drive r inte rven­
tio n
In certain situations, the system will prompt
yo u to take action . This could happen, for ex­
amp le, if braking by the adaptive cruise con­
trol system is not enough to maintain enough
distance to the veh icle ahead .
The indicator light . and the symbol in the
display will warn you about the situation
<=;> fig. 94. You wi ll also hear an acoustic signal.
- Press the brake pedal to slow your vehicle
down.

90 Audi adaptive cruise control and braking guard
Audi braking guard
Descript ion
Applies to vehicles: with Audi adaptive cruise control
Fig. 95 Instrument cluster: approach warn ing
Braking guard uses radar sensors and a video
camera . It also functions within the limits of
the system when adapt ive cruise control is
switched off .
What can braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes sud­
denly or if your own vehicle is traveling at a
high speed and approaching a vehicle up
ahead that is moving more slowly . Brak ing
guard does not react if it cannot detect the
situation .
The system advises you of various situations:
- The
distance warning is given if you are too
close to the vehicle ahead for a long time. If
the vehicle ahead brakes sharply, you will not be able to avoid a collision . The indicator
light. in the display comes on .
- The
approach warning is given when a de­
tected vehicle up ahead in your lane is mov ­
i ng much more slowly than you are or if it
brakes sharply . When this warning is given,
it may only be possible to avoid a collision
by swerving or braking sharply . Th e indicator
light. and indicator in the display will
warn you about the danger
c::> fig. 95. You
will also hear an acoustic signa l.
ll This is not ava ilable in some co un tri es .
If you do not react fast enough or do not react
at all to the situation, braking guard will inter·
vene by braking.
- If a coll is ion is imminent, the system will
first provide an
acute warning by briefly and
sharply applying the brakes.
- If you do not react to the acute warning,
braking guard can brake wit h increasing
force w ith in the limits of the system . This
reduces the vehicle speed in the event of a
collision.
- The system can initiate maximum braking
short ly before a collision
1l . Full deceleration
at high speeds occurs only in vehicles with
adapt ive cruise control and side assist (pre
sense plus).
- If the braking guard senses that you are not
braking hard enough when a collision is im·
m inent, it can increase the braking force.
- The pre sense functions also engage when a
collision is imminent
c::> page 190.
Which functions can be controlled?
You can switch braking guard and the dis­
tance/approach warning on or off in the MMI
c::> page 91, Settings in the MMI.
A WARNING
Lack of attention can cause collisions, oth­
er accidents and serious personal injuries.
The braking guard is an assist system and
cannot prevent a collision by itself. The
driver must always intervene. The driver is
always respons ible for braking at the cor­
rect time.
- Always pay close att ent ion to traffic,
even when the braking guard is switched
on. Be ready to intervene and be ready to
take comp lete control whenever necessa­
ry . Always keep the safe and legal dis­
tance between your vehicle and vehicles up ahead.
- Braking guard works within limits and
will not respond outside the system lim· its, for example when approaching a ..,.

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0 <.J 'SI: ,...., \!) 1.1"1 ,...., 1.1"1 ,....,
Audi adaptive cru ise control and brakin g guar d 91
stopped vehicle or stationary obstacle
(end of a traff ic jam or veh icle that has
broken down in traffic).
- Always remember that the radar sensor
for the braking guard works only within
defined detection and range limits that
may prevent the proper detection of oth ­
er vehicles .
- The radar sensor's function and range
can be reduced by rain, snow and heavy
spray . Moving vehicles up ahead may not
be promptly detected or may not be de­
tected at al l.
- Reflective surfaces in cl ud ing crash barr i­
ers or tunnel ent rances may impair the
function of the radar sensor.
(D Tips
- You can ca ncel the braking w ith increas­
i ng force that is initiated by the system
by b raking yo urself, by accelerating no­
ticeab ly or by swerving.
- Bra king guard error messages
¢ page 91.
-Keep in m ind that braking guard can
brake unexpectedly . Always secure any
c ar go or objec ts that you are transpor t­
i ng to reduce the risk of damage or in­
ju ry.
Settings in the MMI
App lies to vehicles: with Audi adaptive cruise co ntrol
... Se lect: I CAR I function button > (Car )* sy s­
tems
control button > Dri ve r assi st > Audi
bra king guard .
System -
Switch braking g uard On and Off .
When you sw itch the ignition on, the message
Audi b raking guard off appears if the system
is switched off.
Early w arning -The d istance and approach
warn ings in the disp lay can be switched
On /
Off .
@ Tips
- Your settings are automatica lly stored
and ass igned to the remote control key being used at the time the settings are
made
.
-If you res trict the ESC, the braking gua rd
also sw itches itself off¢
page 195 .
-Swi tch braking guard off when you a re
loading the vehicle onto a veh icle carrier,
t rain, ship or other type of transporta­
tion . This can prevent undesired warn­
ings from the braking guard system.
Messages
App lies to vehicles: wi th Audi ada ptive c ruise con tro l
Braking gu ard : off
T his dr iver message appears if the system is
turned off via the infotainment . Otherwise , if
the system is turned off, the information ap ­
pears every time shortly after the start of the
trip.
T he driver message a lso appears if the system
is not ava ilable d ue to a malfunction or if the
ESC is not switched on¢
page 195 . If this is
the case, the system w ill not provide warnings
about a poss ible collision.
B ra king guard : ac tiv ated
This dr iver message appears if sharp b rake
pressure was applied due to an acu te warning.
ACC: Unavailable!
ACC and Audi braking guard: not a vailable
The system cannot detect mov ing vehicles up
ahead correctly and is switched off . The sen­
sors have been displ aced or are not working
proper ly. The Audi pre sense functions may a l­
so be affected . Drive to your authorized Aud i
dealer or author ized Audi serv ice facility im ­
med iate ly to have the malfunction cor rected .
ACC: currently unavailable. No senso r vis ion
ACC and b rak ing guide: cu rrentl y una vaila­
ble . No sensor vis ion
T h is mess age appears if the senso r view is ob­
structed, for examp le by leaves, snow, heavy
spray or dirt. Clean the sensors
i=:> page 84,
rg .85 . ~

92 Audi adaptive cruise control and bra king guard
ACC : Currently unavailable . Gradient too
steep
T he road ex ceeds the maxim um poss ible an­
g le for proper adaptive cruise co ntrol opera ­
tion . Adaptive cruise control is sw itched off .
ACC: Only available in D, Sor M
Select the D/S or M selector lever position .
ACC: currently unavailable. Parking brake
appl ied
T he adaptive c ruise co ntro l system swi tc hes
off a utomat ica lly if t he pa rking brake is set.
ACC : Currently unavailable . Stability control
(ESC) input .
This message appea rs if the Elect ron ic Stabili­
z ation Cont ro l (ES C) is wo rking to help stabi­
l iz e the vehicle. In thi s case, a dap tive cru ise
con tro l sw itches o ff autom atically .
ACC off: Manual control!
This message appears whe n adapt ive cr uise
control can not set the par king b rake. Press
the brake peda l to prevent the vehicle from
rolling .
•••
Three w hite dots appear if a settin g can not be
se lected with the se lecto r lever. For example,
this happens if adapt ive cr uise control cannot
resume driv ing in stop-and-go traff ic because
one o f the conditions required for ACC to wor k
i s not present .
Door open
The adaptive c ruise control system c annot
switch on whe n a doo r is open .
Stationary object ahead
This message appea rs if you would like to
sw itch adaptive cru ise cont rol on and ther e is
a stat io na ry ve hicle o r obstacle directly ahead
of yo ur vehicle .

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Automatic Transmission
multitronic, S tronic,
tiptronic
Introduction
The automatic transmission is controlled elec­
tronically . The transmission upsh ifts or down­
shifts automatically depending on which drive
program is se lected .
When a
moderate driving style is used, the
transmission selects the most economical
driving mode . It will then change up early and
delay the downshifts to give better fuel econ­
omy.
The transmission switches to a sporty mode
after a kick-down or when the driver uses a
sporty driving style characterized by quick ac­
celerator pedal movements, heavy accelera­
tion, frequent changes in speed and traveling
at the maximum speed.
If desired, the driver can als o se lect the gears
manually (tiptronic mode) q page 111.
Various automatic transmissions may be in­
stalled , depending on the model:
multitronic transmission
The multitron ic transmission is a continuously
variable transmission. Power is transferred us­
ing a multidisk clutch . In contrast to conven­
tional automat ic transm iss ions using shift ing
ope rat ions, the transmiss ion ratio in the con­
tinuously variab le transmission is changed
continuously. This optimizes the comfort level
and conserves fuel.
S tronic transmission
The S tronic is a dual-clutch transmission .
Power is transferred using two clutches that
work independently from one another. They
replace the torque converter used in conven­
tional automatic transm issions and allow the
vehicle to accelerate without a noticeable in­
terruption in traction.
Automatic Transmission 107
tiptronic transmission
In the tiptronic transmission, power is trans­
ferred by a torque converter.
Selector lever positions
Fig. 114 Disp lay in the instrument cluster: selector
l ever positio n
The selector lever position engaged appears
next to the se lector lever as we ll as in the in­
strument cluster display.
P- Park
In this selector lever position the transmis­
sion is mechanically locked. Engage P on ly
when the vehicle is
completely stopped q .&.
in Driving the automatic transmission on
page 110.
To shift in or out of positio n P, you must first
press and hold the brake pedal and then press
the re lease button in the selector lever handle
while moving the selector lever to or from P.
You can shift out of this position only with the
ignition on.
R - Reverse
Select R only when the vehicle is at a full stop
and the engine is running at idle speed i:> & in
Driving the automatic transmission on
page 110 .
Before you move the se lector 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 illu­
minate when the selector lever is moved into
R. ..,.

108 Automatic Transmission
N -N eutr al
The transmission is in neutral in this position.
Shift to this position for stand ing with the
brakes applied
q .&. in Driving the automatic
transmission on page 11 O.
When the ve hicle is stationary o r at speeds
be low 1 mph (2 km/h), you must always apply
the footbrake befo re and while moving the
l ever out of N.
D IS -Normal position for driving forward
In the D/S position, the transmiss io n can be
operated e ither in the normal mode Dor i n
the sport mode S. To select the sport mode S,
pu ll the se lector lever back briefly . Pulling the
lever back aga in will select the normal mode
D. The instrument cluster display shows the
selected driving mode.
In the normal mode D, the transmission a uto ­
mat ica lly selects the suitab le gea r ratio.
It de­
pends on engine load, veh icle speed and driv­
ing style.
Select the sport mode S for sporty driving .
The vehicle makes fu ll u se of the engine's
power. Shifting may become noticeable when
accelerating.
When the ve hicle is stationary o r at speeds
be low 1 mph (2 km/h), you must always apply
the foot brake before and while moving the lever to D/S out of N.
A WARNING
Read and follow all WARNINGS q .&. in
Driving the automatic transmission on
page 110.
(D Note
-
Coast ing downh ill with the transmission in
N and the e ngine not r unning w ill result in
damage to the automatic transm iss io n
and possib ly the catalyt ic converter.
@ Tips
- Audi drive select : you ca n adj ust the
sporty s hift c haracte ristics in th e
Dy-
namic driving mode.Swi ll appea r in the
instrument cluster display instead of D.
-If you a cc iden tally selec t N whi le driving,
take your foot off the accelerato r pedal
immediately and wa it for the engine to
slow down to idle before select ing D/S.
- If there is a power fai lure, the selector
lever w ill not move out of the P position.
The emergency release can be used if
this happens
qpage 113.
Automatic Shift Lock (ASL)
The Automatic Shift Lock safeguards you
against accidentally shifting into a forward or the reverse gear and causing the vehicle to
move unintentionally.
0, N ! ' g
i
) ( )
-
Fig. 1 15 Shift gate: selector leve r lock positions a nd
r e lease button highl ighted
The selector lever lock is released as follows:
... Tur n the igni tion on.
... Step o n the brake pedal.
At the same time
press and hold the re lease button on the
side of the gear selector knob
¢ fig. 115
with your thumb until yo u have moved the
selector lever to the desired posit ion.
Automat ic selector leve r lo ck
The selector lever is locked in the P and N po­
sitions when the ignition is turned on. Yo u
must press the brake pedal and t he re lease
button to select another position . As a re­
minder to the driver, the following warni ng
appears in the instrument cluster display
when the selector is in P and N:
When stationary apply brake pedal while se -
lecting gear
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The Automatic Shift Lock only functions when
the vehicle is stationary or at speeds below
1 mph (2 km/h).
At speeds above about 1 mph (2 km/h) the
Automatic Shift Lock is automatically deacti­
vated in the N position.
A time delay element prevents the se lector
l eve r from locking when it is moved thro ugh
the N position (going from R to 0/5). The lock­
ing e lement will lock the selector lever if the
lever is left in N (Neutral) for more than ap­
prox imately 2 second, without the brake ped­
al being pressed.
R elease button
The release button on the selector lever pre ­
vents the lever from being accidenta lly shifted
into certain positions. Depending on the direc­
tion of the shift, the selector lever locks at d if­
ferent positions. The positions are h ighlighted
in the illustration
¢ fig . 115 .
Driving the automatic transmission
Fig. 116 Shift gate on the center conso le: selector lev ­
er w ith release button
Starting the engin e
• The selector lever must be in P or N.
Starting off
• Press and ho ld the brake pedal.
• Press and hold the release button in these­
lector lever handle, select the desired selec­
tor lever pos ition such as D/S and release
the button .
• Wait br iefly until the transmission has sh ift­
ed (you will feel a slight movement).
Automatic Tra nsmi ssi on 109
• Remove your foot from the brake pedal and
accelerate.
Stopping t emporarily
• Keep the veh icle stationa ry using the brak ­
ing pedal, for example at traffic lights.
• Do not press the accelerator peda l w hen do­
ing this .
• To prevent the vehicle from ro lling when you
start dr iving, set the parking brake when
stopping on steep inclines¢.&_ .
• The parking brake will release automat ically
and the vehicle will start mov ing once you
press the accelerator pedal.
Stopping /parking
If the selector lever is not in the P position
when you open the driver's door, the vehicle
could roll. The message
Transm ission: Car
may roll! Shift to park !
appears.
• Press and hold the brake peda l until the ve-
hicle has come to a complete stop.
• Apply the parking brake¢
page 77, Parking.
• Select the P selector lever posit ion c::> ,&. .
Stopping on a n incline
• Always press the brake pedal to ho ld the ve­
hicle in place and prevent it from "rolling
back"
c::> .&_ . Do not try to prevent the veh i­
cle from "rolling back" when a gear is en­
gaged by increas ing the engine speed
c:::, (D ,
Sta rting on an incline
• Activate the parking brake .
• With the driving gear selected, press the ac­
celerator peda l carefully. The parking brake
w ill release automatically if your seat belt is
fastened .
Under certain circumstances, such as driving
in the mounta ins, it may be useful to switch
temporarily to the manual shift program in or ­
der to ad just the gears to the driv ing cond i­
tions by han d
¢page 111.
On s lopes, activate the parking brake first and
then move the selector lever to the P position .
This prevents too much stress from being placed on the locking mechanism. .,.