2011 AUDI S8 light

90 Adapti ve crui se control and braking gu ard
- If an obstacle is detected when your ve ­
hicle starts driving, the system will
prompt you to take over~
page 90.
Your vehicle w ill drive more slow ly when
starting . This may also happe n in some
situations when there no obstacle is ap ­
parent .
Interrupting cruise control
Applies to vehicles: with adaptive cruise control
Requi rement : adaptive cruise control must be
switched on.
Overriding cruise control
... To accelerate manually, pull the lever to­
ward you into position@~
page 88, fig. 89
and hold it there . The message ACC ove rri de
appears. Or
... press the accelerator peda l.
... To resume cruise control, release the leve r
o r take your foot off the acce le rator pedal.
Canc eling cruise control while driving
... Move the lever into posit ion @. The mes­
sage
ACC standb y appears . Or
... press the brake peda l.
... 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 standb y appears .
... To resume cruise control, press the brake
peda l and pull the lever toward you into po­
sition @.
A WARNING
Improper use of the adaptive cruise con­
trol can cause collis ions, other acc idents
and ser io us personal injuries.
- Never resume the stored speed if the
speed is too high for preva iling road,
traffic or weather conditions .
-
Prompt for driver intervention
Applies to vehicles: with adaptive cruise contro l
Fig. 91 Inst ru m en t cl ust er : req ues t fo r dr ive r in te rv en­
ti on
In certa in situations, the system will p rompt
you to take action . Fo r example , braking by
the adaptive cr uise control system is not
enough to maintain enough distance to the
vehicle ahead .
T he ind ic a tor light
I and the symbol in the
display will warn you abo ut the s ituation
r::!> fig. 91 . You wi ll also hear an acoustic signal.
- Press the brake pedal to slow your vehicle
down.
Changing the speed
Applies to vehicles: with adaptive cruise control
0
f
• 0
Fig. 92 Operating leve r: c ha ngi ng the speed
... To increase or reduce the speed in incre ­
ments,
tap the lever up or down .
... To increase or reduce the speed quick ly,
h o ld
the lever up o r down un til the red LED@
reaches the desired speed
r::!> page 88,
fig. 90.

92 Adaptive cruise control and braking guard
-Your standard settings are automatically
stored and assigned to the remote con­
trol key being used .
Audi braking guard
Description
Applies to vehicles: wit h adapt ive c ru ise control
Fig. 94 Instrument cluster: approach warn ing
Audi brak ing guard uses radar sensors and a
video camera . It is active at speeds above
about 6.2 mph (10 km/h) and also works
within system limits when adaptive cruise control is switched off.
On vehicles with aAdaptive cruise control and
Audi side assist (Audi pre sense plus), system
functions also engage when a co llision is im­
minent
¢page 188.
What can Audi braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes sud­
denly or if your own veh icle is traveling at a
h igh speed and approaching a vehicle up
ahead that is moving more slowly. Audi brak­
ing guard does not react if it cannot detect
the situation.
The system advises you of various kinds situa­ tions :
- 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 coll is ion. The ind icator
light
I i n the d isplay comes on. Take imme ­
diate action to avoid the coll is ion and in­
crease the distance to the vehicle up ahead. -
The
approach warning is given when a de­
tected vehicle up ahead in your lane is mov­
ing much more slowly that you are or if it
brakes sharp ly. When this warning is given,
it may only be possible to avoid a collision
by swerving or braking sharp ly . The indicator
light
I and the symbol in the disp lay will
warn you about the danger
c:> fig. 94 . You
w ill also hear an acoustic signal.
If you do not react fast enough or do not react
at all to the situation, Aud i braking guard w ill
intervene by braking and the message
braking
guard intervention
w ill appear.
- If a coll is ion is imminent, the system will
first provide an
acute warning by brak ing
sharply .
- If you do not react to the acute warning, Au­
di braking guard will brake w ith increased
force in severa l stages to reduce the speed
in a possible collisio n. On ve hicles w ith
adaptive cruise contro l and Audi side assist
(Audi pre sense plus), the system can brake
with increasing force up to maximum decel­
eration shortly before a sensed collision
¢ page 188.
- If
the Audi braking g uard senses that you
are not braking hard enough when a colli­
sion is imminent, it can increase the braking
force.
Audi braking guard takes the driver's reaction
time into consideration in order to provide
timely warnings. The system reaction time de­ creases automatically in some situations, for
example when it detects accelerator pedal use
or steering input . The Audi braking guard in­
tervent ion stops in certa in situations, for ex­
amp le if you press the accelerato r pedal to
pass the vehicle moving ahead of you in your
lane.
Which functions can be controlled?
You can switch Audi braking guard and the
distance/approach warning on or off in the
M M I c:> page 93, Settings in the MMI.

Audi lane assist Lane assist
De scription
App lies to vehicles: with la ne ass ist
Lane assist helps you keep your vehicle in your
lane.
Lane assist uses a camera to detect lane boun ­
dary lines . If the system detects that your ve­
hicle is about to cross a detected lane boun­
dary line, the steering wheel
vibrates to alert
the driver . Lane assist is operable when the
line marking the lane is detected on at least
one side of the veh icle. This is ind icated by a
g reen indicator light. in the instrument
cluster.
If the system is in active standby mode and
the turn signal is activated before driving over
the bounda ry line, the warn ing does not occur
since the system allows for intentional lane
changes.
The system is designed for driv ing on free­
ways and expanded highways and thus works
only at speeds of 40 mph (65 km/h) or more.
A WARNING
- Lane assist will not keep your vehicle in
your lane . The system only warns the
driver when the vehicle is leaving the
lane . The driver is always responsible for
keeping the vehicle in the lane .
- The camera is not able to detect all lane
boundary lines and in some cases might
also detect lane structures or objects as
boundary lines . This can lead to incorrect
warnings or wa rnings tha t fail to go off
at all.
- The camera's visibility can be impaired by
vehicles ahead of you, for instance, or by
rain, snow, heavy spray o r light sh in ing
into the camera lens. Th is can cause lane
assist to fa il to detect boundary lines.
Audi lane a ssis t 95
Act ivating and deactivating
App lies to vehicles: wit h lane assist
Fig. 95 Turn sign al lever: Lane assist button
Fig . 96 W inds hield: La n e ass ist camera vi ewing w in­
dow
"' Press the Q fig . 95 button to activate or de­
ac tivate the system . The/: indicator light
on the instr ument cluster will illuminate or
go out.
Instrum ent clu ster ind icat or light
• Rea dy:
The green indicator light shows
that the system is ready to use.
A warning
alerts the driver when the vehicle drives over
detected lane bounda ry lines.
• Not r ea dy: The yellow indicator light
shows that the system is turned on but unable
to send a warning. This can be due to the fol­ low ing :
- There is no lane boundary line .
- The boundary lines are not detected (e.g .
due to snow, d irt, wet conditions or l ight
shin ing into the camera lens) .
- The vehicle 's speed is below the speed need ­
ed to activate it, which is about 40 mph (65
km/h).
- The lane is narrower than about 8
ft. (2 .5
m) .
-The curve is too sharp .

Audi lane assist: currently not available. no
sensor vision
This message appears if the camera is unable
to detect the lines. This could happen if:
- The camera field of view
c::> page 95, fig . 96
is dirty or covered in ice. Clean the area on
the windshield.
- The camera field of view is fogged over. Wait
until the fog has cleared before switching
lane assist on.
- The system has been unable to detect the
lanes for an extended period of time due to
road conditions such as lanes covered in
snow. Switch lane assist back on when the
lines are more visible.
Audi lane assist: currently not available
There is a temporary lane assist malfunction.
Try switching lane assist on again later.
Audi lane assist: system fault
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected.
Setting the warning point and steering
wheel vibration
App lies to vehicles: with lane ass ist
You can adjust individual settings in the MMI.
~ Select : ICARI function button> Car systems
control button > Driver assist > Audi lane
assist.
Setting the warning point Early:
With this setting, a warning is provided
before a wheel touches the detected lane
boundary line. The warning depends on the
angle in which the vehicle is approaching the
line. The distance at which the warning is giv­
en increases as the angle becomes sharper. If
you drive toward a boundary line at a very sharp angle, the warning will come just before
a wheel touches the line.
Medium: With this setting, the warning point
is adapted to the course of the road, the lane
width and the speed. You will still be warned
Audi lane assist 97
if you cross slightly over a dotted line when
driving on curves.
Late: This setting has the same properties as
medium. You will only be warned once a
wheel crosses a detected line.
Setting the steering wheel vibration
The steering wheel vibration can be set to
Low, Medium or Strong. Selecting each of the
settings will cause the steering wheel to vi­
brate so you can check the strength of the vi­
bration in that setting.
(D Tips
Your settings are automatically stored and
assigned to the remote control key being
used.

98 Audi side assist
Audi side assist
Lane Change Assistant
Description
App lies to vehicles: with si de assist
The side assist helps you when changing
lanes.
GID
A UDI
Fig. 99 Rear bumper: Posit ion of radar se nsors (not
vis ible on outs ide)
Fig. 100 Signal light on the outside mirror -driver's
side
ID ,._
8
i
.. a,
Side assist uses radar sensors (not visib le on
outside) ¢
fig. 99 to help the driver check
blind spots, and see what is happening in traf­
fic behind the vehicle
¢page 99, fig. 102.
Signal lights are built into both outside mir­
rors ¢
fig. 100. The signal light on the left
outside mirror assists when moving over into
the left lane and the signal light on the right
outside mirror assists when moving over into
the right lane.
The s ignal light comes on to tell you that side
assist has detected a vehicle on that side and
that the position of this other vehicle should
be taken into account if you were to change
lanes. This is called the
informational stage
signal ¢page 100.
The informational stage signal
is designed so that you notice it only
when you are looking in the outside mirror.
When you activate the turn signal and side as­
s ist detects a vehicle in a notable location, the
corresponding signal on the outside mirror
flashes briefly and brightly several times. This
is the
alert stage signal ¢ page 100.
Activating and deactivating
App lies to vehicles: wit h side assist
Fig. 101 Driver 's door: Side assist button
Activating
a,
ij
:r
" a,
"' Press the button¢ fig. 101. The indicator on
the button lights up.
Deactivating
"' Press the button again. The indicator light
on the button goes out .
The system works at speeds faster than 19 mph (30 km/h) .
A WARNING
-- Improper reliance on the side assist sys-
tem can cause collis ions and serious per­
sonal injury:
- Never rely on ly on side assist when
changing lanes.
- Always check rear view mirrors to make
sure that it is safe to change lanes.
- Side assist cannot detect all veh icles un ­
der all conditions- danger of acc ident!
- Side assist cannot detect vehicles in time
to a lert you when they approach from
behind at very high speed, or fall drop
back very quickly. ..,_

-The radar sensor's vision can be reduced
or entirely blocked by rain, snow, and
heavy spray . This can result in side assist
not adequately detecting vehicles or, in
some cases, not detecting them at all.
Always keep an eye on the d irection you
are traveling and the relevant area
around the vehicle.
- Please note that side assist indicates
there are approaching vehicles, o r vehi­
cles in your blind spot, only after your ve ­
hicle has reached a driving speed of at
least 19 mph (30 km/h).
- Side ass ist signal does not work around
tight corners (turning radius less than
328 feet or 100 m).
- Side assist is no replacement for the driv­
er's full attention . The driver alone is re­
sponsible for lane changes and similar
driving maneuvers. A lways keep an eye
on the direction you are traveling and the
relevant area around the vehicle.
(D Note
- To ensure that you do not adversely af­
fect side assist, do not block the area on
the rear bumper where the radar sensors
are located with foreign objec ts (such as
stickers or bicycle racks).
- Make sure that the signal light on the
outside m irror is not blocked by st ickers
or other items .
@ Tips
-Side assist automatically deactivates if it
detects that the radar sensors are
blocked ~
page 104. The indicator light
on the button goes out .
- The area on the bumper where the radar
senso rs are located must consistently re­
main free of snow, ice, and heavy soiling
so that side assist can function properly.
Follow the additional notes on
.:!>page 104 .
-Additional tinting on the front side win­
dows can make it harder to see and cor­
rectly understand the signa l light on the
outside mirror.
Aud i side assist 99
-For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions ¢
page 286.
Sensor detection area
Applies to vehicles: with side assist
t
Fig. 102 Sc hemat ic illu st ration : Sen sor detect io n area
The detection ¢ fig. 102 of the radar sensor
detection area is made up of:
- the approach area (light green area)@,
about 230 feet (70 m) beh ind the veh icle,
and
- the "b lind spot" (dark green area) @.
The radar sensors cover the adjacent left and right lanes. Other lanes are
not covered by the
radar sensors .
(D Tips
Side assist does not measure actual lane
width. The system assumes a fixed lane
width . Detection in the left and right lanes
i s based on this assumed lane width .
When dr iv ing on narrow roads or when
driving to the left or right of the center of
a travel lane, it is possib le that vehicles
will be detected that are
not in the lane
next to the lane you are using
.:!> page 103.
Operation
App lies to vehicles: with side assist
Side assist compares the distance and differ­
ence in speed of detected vehicles with the
speed of your vehicle . Whenever the d iffer­
ence in speed and distance is registered as no­
table if you were to change lanes, a signal
light appears on the respective m irror. ..,.

100 Audi side assist
The signal can light up i f you are passed by a
vehicle or if yo u are passing another vehicle.
If you p ass another vehicle slowly (difference
in speed less than 9 mph, or 15 km/h), the
signal light will come on as soon as the other
ve hicle is in your blind spot and is detected by
side assist . When the difference in speed is
greater, the signa l light will not come on.
Informational and alert stage signals
App lies to vehicles: with side assist
Side assist has two s ignal stages:
- the informationa l stage signal, and
- the a le rt stage signa l.
Side assist helps you by using the appropriate
signal s tage, depending on whether or not
you have activated the turn signal, and thus
have indicated that you are or are not chang­
ing lanes.
Informational stage signal
As long as you have not activated the turn sig­
nal, side assist informs you of detected vehi ­
cles that are registered as being in a notable
l ocat ion if you were to change lanes. Whenev ­
er the detected vehicle's difference in speed
and distance is registered by side assist as no­
table, the signal light on the respective m irror
produces muted illum ination.
The brightness of the informational stage sig­
na l is designed not to be as intense, so that it
does not interfere with your view of the road
when you are driving and have no intention of
changing lanes. When you look in the outside
mirror, you can clearly see the informat ional
stage signa l.
Alert stage signal
When you activate the turn signal, and side
assist has detected a vehicle in a notable loca­
tion on that part icular side, the signal light on
this side mirror flashes bright ly. The repeated
brief and bright flashing of the alert stage
signal reminds you to carefully check traffic to
the rea r in the outs ide mir ror and over you r shou
lder, so that you can safely comp lete the
lane change ¢.&.
in Safety tips on page 104.
(D Tips
The brightness of the s ignal light on the
outside mirrors can be adjusted with the
MMI ¢page 103.
Driving situation: Fast approaching
vehicles
Applies to vehicles: with side assist
Fig . 103 Side assist: Fast approac hing veh icles
(!) Signal on outside mirror does not light
up
No vehicle was dete cted by the sensors. The
signal on the outside mirror does not light up
¢ .&. in Safety tips on page 104.
@ Informational stage signal lights up
A fast approach ing vehicle - in the left-hand
l ane fo r example - was detected by the sen­
sors. Although th is vehicle is still fa r away, it
shou ld be taken into account if you were to
change lanes, due to the considerable differ­
ence in speed. The informationa l stage signal
on the outside mirror lights up
¢ page 100. ..,.

@ Alert stage signal flashes
If you activate your turn signal in driving sit­
uation @, the signa l briefly f lashes repeated­
ly. Side assist is a lerting you to a vehicle that
you may not have noticed.
@ Tips
- The faster a vehicle approaches from the
rear, the sooner the signa l on the outside
mirror lights up. Side assist will signa l,
at the latest, when a detected vehicle en­
ters your "blind spot".
- When vehicles approach very quickly,
changing lanes can be dangerous even if
the signal on the outside mirror does not
light up.
Driving situation: Slowly approaching
vehicles
Appl ies to vehicles : wit h side ass ist
®
Fig. 104 Side assist: Slowly approaching veh icles and
veh icles in you r b lin d spot
@ Signal on outside mirror does not light
up
A vehicle approaching slowly -in the left-hand
lane for examp le -was detected by the sen­
sors. Because of the small difference in speed
and the considerab le distance from your vehi-
Audi side assist 101
cle, the signal on the outside mirror will not
light up¢.&
in Safety tips on page 104.
@ Informational stage signal lights up
The distance between your veh icle and that of
the slowly approaching vehicle has narrowed.
T he informational stage signal on the outside
mirror lights up.
As soon as the difference in speed and dis­
tance is registered as notable if you were to
change lanes, a signal on the m irror lights up.
Side assist will signal at the latest when a de­
tected vehicle enters your "blind spot".
@ Alert stage signal flashes
If you activate your turn signal in driving sit­
uation @, the signal light briefly flashes re­
peatedly. Side assist is alert ing you of a vehi­
cle that you may not have noticed.
(D Tips
- Th e faster a vehicle approaches from the
rear, the sooner the signal on the outside
mirror lights up. Side assist will signal,
at the latest, when a detected vehicle en­
ters your "blind spot".
- When vehicles approach very quickly,
changing lanes can be dangerous even if
the signal on the outside mirror does not
light up.