warning AUDI A8 2012 Manual PDF

88 Audi adapti ve cruise control and bra king gu ard
vehicles or obstacles that are not moving
can trigger a collision warning and if con­
firmed by the v ideo camera, an acute col­
lis ion warn ing .
- For safety reasons, do not use adaptive
cruise co ntrol when driving on roads with
many curves, when the road surface is in
poor condit ion and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplan ing) . Using the system under
these cond it ions cou ld result in a co lli ­
sion .
- Swi tch adap tive c ruise control off tempo­
rar ily when driv ing in turning lanes, on
expressway exits or in construction
zones . This prevents the vehicle from ac­
celerat ing to the set speed when in these
situations.
- The adapt ive cruise control system wi ll
not brake by itse lf if you put your foot on
the accelerator pedal. Doing so can over­
ride the speed and d istance regulation .
- When approaching stationary objects such as stopped traff ic, adaptive cruise
co ntrol will not respond and braking
guard w ill have limited function.
- The adapt ive cruise control system and
braking guard do not react to people, an­
imals, objects c rossing the road or on­
coming objects .
- The function of the radar senso rs can be
affected by reflective objects such as
guard rai ls , the entrance to a tunnel,
heavy rain or ice.
- Never follow a ve hicle so closely that you
cannot stop your vehicle safe ly. The
adaptive cruise contro l canno t slow or
brake the vehicle safely when you follow
another vehicle too closely. Always re­
member that the automatic braking
function cannot br ing the vehicle to a
sudden or emergency stop under these condit ions.
- To prevent unintended operation, always switch ACC off when it is not being used. (D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. That cou ld affect the adaptive
cruise control system and brak ing guard.
Have your authorized Aud i dea ler or au ­
thorized Audi Service Facility check their
funct ion .
In curves
Applies to vehicles: with Audi adaptive cru ise contro l
I
Fig. 87 Ex ampl e: dri ving in to a curve
When d riving into a curve c> fig. 87 and out of
a curve, the ad aptive cruise control may react
to a vehicle in the next lane and apply the
brakes. You can override or prevent the brak­
i ng by pressing the acce lerator pedal b riefly .
' Stationary objects
Applies to vehicles: with Audi adaptive cruise control
Fig. 88 Exampl e: objec t ch anging l anes and sta tio nar y
object
T he adaptive cru ise control system only reacts
to objects that a re mov ing o r that the system
has already detected as moving . For examp le,
if a vehicle @, which has already been detect-
ed by the adaptive c ruise contro l, tu rns off o r
ch anges lane and ano ther stationary veh icle .,.

90 Audi adaptive cruise control and braking guard
• 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 p lace. The message
ACC off appears.
@ Indicator lights
II-Adaptive cruise control is switched on . No
vehicles are detected up ahead. The stored
speed is maintained.
I-A moving vehicle is detected up ahead .
The adaptive cruise control system regulates
the speed and d istance to the moving vehicle
ahead and acce lerates/bra kes automatica lly.
f§ . Adaptive cru ise control is switched on . A
mov ing vehicle up ahead was detected. Your
vehicle remains stopped .
I -When automatic braking is not able to
keep enough distance to a p reviously detected
mov ing vehicle up ahead, you must take con­
trol and brake¢
page 92, Prompt for driver
intervention.
© Display
If adap tive cruise control is not shown in the
d isplay, you can call it up with the multifunc ­
tion steering wheel buttons~
page 23.
Based on the symbols in the display , you can
determ ine if the system is maintaining a dis­
tance to the vehicle ahead and w hat that dis ­
tance is.
No vehicle -No vehicle ahead was detected.
White vehicle -A vehicle ahead was detected .
Red vehicle -Prompt for the driver to take ac­
tion ¢
page 92.
Both
arrows on the scale © indicate the dis­
tance to the vehicle ahead . No arrow appears
when the vehicle is on an open road and there 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 d istance. For information on changing the stored distance, refer to
¢
page 91. If the
distance se lected is too close or may soon be­
come too close, the arrows move into the red
z one 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 driving at
speeds below 20 mph (30 km/h), w ill 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.
- You cannot switch the Electron ic Stabili­
ty Control (ESC) to the SPORT mode
when adaptive cruise control is switched
on .
Changing the speed
Applies to vehicles: with Audi adaptive cru ise control
0
f
• 0
Fig. 92 Selecto r lever : chang ing t he spee d
• To increase or reduce the speed in incre ­
ments,
tap the lever up or down.
-
-a)
N
q :r
~
"' To increase or reduce the speed qu ickly,
hold the lever up or down until the red L ED
@ reaches the desired speed ¢ page 89,
fig . 91.
Following any changes, the new stored speed
will be displayed briefly in the display @
¢page 89, fig. 91.

Audi adaptive cruise control and braking guard 91
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 s tops, yo ur vehicle will
brake to a stop, within the limits of the sys ­
tem .
.,. To resume driv ing with adap tive cruise con ­
tro l, tap the accelerator peda l or
.,. Pull the lever toward you into position @
¢ page 89, fig. 90.
(D Tips
-If adaptive cru ise contro l is active and
your vehicle does not start driving as ex­
pected after pulling the lever once, you
can start out aga in by tapping the accel­
erator pedal.
- If an obstacle is detected when your ve­
hicle starts dr iv ing, the system w ill
prompt you to take over
¢ page 92.
Your vehicle w ill drive more slowly when
starting. This may also happen in some
s ituations when there no obstacle is ap­
parent.
Interrupting cruise control
Ap plies to vehicles: with Audi adaptive cruise control
Fig. 93 Selecto r level
Requirement: adaptive cruise control must be
switched on .
Overriding crui se control
.,. To accelerate manua lly, pull the lever to­
ward you into position @and hold it there.
The message
ACC override appears. Or
.,. press the accelerator pedal. .,.
To resume cruise contro l, release 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 pos ition
@ . Th e message
ACC standby appears.
.,. To resume cruise control, press the brake
pedal and pu ll the lever toward you into po­
sition @.
A WARNING
-
Never resume the stored speed if the
speed is too high for prevailing road, traf­
fic or weather conditions.
Setting the distance
App lies to vehicles: with Audi adapt ive cr uise contro l
Fig. 94 Selector lever: setting th e dista nce
.,. Tap the switch to display the current set dis­
tance
¢ fig. 94 .
.,. To increase or reduce the distance by incre­
ments, tap the switch again to the left or
right. The distance between the two vehicles
w ill change in the instrument cluster dis ­
play.
When approaching a moving vehicle up ahead,
the adapt ive cruise control system automati­
cally brakes to match that object's speed and
then maintains the stored distance . If the ve-
hicle ahead accelerates, adaptive cruise ..,.

92 Audi adaptive cruise control and braking guard
control will also accelerate up to the stored
speed.
The higher the speed , the greater the distance
in yards (meters)¢ .&.. T he
Distance 3 setting
is recommended .
The distances p rov ided are spec ified values.
Depending on the driving situation and the
how the vehicle ahead is dr iving, the actual
distance may be more or less than these tar­
get distances .
The various symbols for the time increments
appear briefly in the info rmation line @
¢ page
89, fig. 91 when you change the set­
tings .
c:::,_c:::, ___ 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.
c:::, __ c:::, __ Distan ce 2: Thi s setting corre­
sponds to a dis tance of 118 feet/36 meters
when traveling at 62 mph ( 100 km/h), or a
time interva l of 1.3 seconds.
c:::, ___ c:::,_ 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 interva l of 1.8 seconds.
c:::, ____ c:::, 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.
.&_ WARNING
Following other vehicles too closely in­
creases the risk of collisions and serious
personal injury.
- Setting short distances to the traffic ahead reduces the t ime and distance
available to br ing 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 distance for the traffic, 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
tro l key being used.
Selecting the driving mode
Applies to veh icles: w ith Audi adapt ive cr uise contro l
.,. Select the desired driving mode in dr ive se­
lect
¢ page 103 .
@ Tips
Your settings are automatically stored and
assigned to the remote control key being
used.
Prompt for driver intervention
Applies to vehicles : w it h Audi ada ptive cr uise cont ro l
Fig. 95 Instrument cluster: request for driver inte rven ­
tio n
In certa in s ituations, the system will prompt
yo u to take action . Thi s 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
I and the symbol in the
display will warn you about the situa tion
¢fig.
95. You w ill also hear an acoustic signal.
- Press the brake pedal to slow your vehicle
down.

Audi adaptive cruise control and braking guard 93
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 96 Instrument cluster: approach warning
Audi braking guard uses radar sensors and a
video camera. It also functions within the lim­
its of the system when adaptive cruise control
is switched off.
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 vehicle is traveling at a
high 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 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 collis ion. The indicator
light
I i n 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. The indicator
light
I and indicator in the display will warn
you about the danger
c::> fig . 96. You will a lso
hear an acoustic signal.
If you do not react fast enough or do not react
at all to the situation, Aud i braking guard will
11
This is not ava ilable in som e coun tri es.
intervene by braking and the message braking
guard intervention
will appear.
- If a coll is ion is imminent, the system wi ll
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 with increas ing
force within the limits of the system. This
reduces the vehicle speed in the event of a
collision.
- The system can initiate complete dece lera­
tion shortly before a collision
1>. Full deceler­
ation at high speeds occurs only in vehicles
with adaptive cruise control and side assist
(pre sense plus).
- If the Audi braking guard senses that you
are not braking hard enough when a colli­
sion is immi nent, it can increase the braking
force.
- The pre sense functions also engage when a
collision is imm inent
c::> page 185 .
Which function s can be controlled?
You can switch Audi braking guard and the
distance/approach warning on or off in the
MMI c::> page 94, Settings in the MMI.
A WARNING
Lack of attention can cause collisions, oth­
er accidents and serious personal injuries .
The Audi braking guard is an assist system
and cannot prevent a collision by itself.
The driver must always intervene. The driv­
er is always responsib le for braking at the
correct time.
- Always pay close attention to traffic,
even when the Audi braking guard is
switched on. Be ready to intervene and
be ready to take complete control when ­
ever necessary. Always keep the safe and
legal distance between your veh icle and
veh icles up ahead.
- Audi brak ing guard works within limits
and will not respond outside the system
lim its, for example when approaching a

96 Audi la ne a ssis t
Audi lane assist
Lane assist
Description
Appl ies to vehicles: with lane assist
Lane assist helps you keep your vehicle in your
lane .
Lane assist detects lane marker lines within
the limits of the system using a camera in the
windshield. If you are approaching a detected
lane marker line and it appears likely that you
will leave the lane, the system will warn you
with a light vibration . Lane assist is operable
when the line marki ng the lane is detected on
at least one s ide of the vehicle .
The system will not warn you before cross ing
a lane ma rker line if you have activated the
turn signal. In t his case, it assumes tha t you
a re cha nging lanes intent ionally.
The system is designed for driv ing on free­
ways and expanded highways and thus works
on ly at speeds of 40 mph (65 km/h) o r more .
.&_ WARNING
-Lane ass ist will not keep your vehi cle in
yo ur lane. The system only warns the
dr iver w hen the vehicle is leaving the
lane . The driver is always responsib le 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 warnings that 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 or light shin ing
in to the camera lens. This can cause lane
a ssist to fa il to detec t bou ndary lines.
- Activating and deactivating
Applies to
vehicles: with lane assist
Fig. 9 7 Turn signal lever: Lane-ass ist button
Fig . 98 W ind shi eld: Lane assist camera viewing win­
dow
"' Press the q fig . 97 button to activate or de­
activate the system. The. or. indicator
light in the instr ument cluster w ill illumi­
nate or go out.
Instrument cluster indicator light
• Ready : The green indicator light shows
that th e system is ready to use . Th e system
can now warn you if yo u are about to cross a
known lane mar ker line.
• Not r ead y: The yellow indicator light
shows that the system is t urned on bu t unable
to send a warning . This can be due to the fol ­
lowing :
- There is no lane boundary line .
- The relevant lane marker lines are not de-
tected (for example, markings in a construc ­
tion zone or because they are obst ructed by
snow, d irt, water or backlighting) .
- The vehicle's speed is below the speed need·
ed to activate it, wh ich is about 40 mph (65
km/h).
- The lane is narrower than about 8
ft . (2.5
m) .

-The curve is too sharp.
(0 Tips
Make sure the camera's field of view
c::> fig. 98 is not obstructed by stickers, de­
posits or anything e lse . For information on
cleaning, refer to
c::> page 205.
Lane assist display in the instrument
cluster
App lies to vehicles: with la ne ass ist
Fig. 99 Instrument cluste r: lane ass ist is switched on
and is wa rning
Fig. 100 Instrument clus ter: lane assist is switched on
but not ready to provide warn ings
You can call up the lane assist display using
the buttons in the mult ifunct ion steer ing
wheel
c::> page 23.
When lane assist is switched on, the system
indicates which lines are detected by display­
ing solid lines on the left and/or right side of
your vehicle:
Audi lane assist 97
White line(s) Lane assist is switched on and
ready to provide warnings on
the side that is indicated
Red line
(left or right)
c::> fig. 99.
Lane assist is warning you
that you are about to leave
your lane
c::> fig. 99 .
Gray line(s} Lane assist is switched on but
is not ready to provide warn­
ings
c::> fig. 100 .
Messages in the instrument cluster
display
When the lane assist turns off automatically,
the instrument cluster indicator goes out and
one of the follow ing messages appears o n the
display:
Audi lane assist: currently unavailable. No
camera view
This message appears if the camera is no lon­
ger functional after the system has continous­
ly failed to detect the lane markings. This
could happen if :
- The camera field of view
c::> page 96, fig. 98
is dirty or covered in ice. Clean the area on
the windshield.
- The camera field of v iew 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 . Sw itch lane ass ist back on when the
lines are more visible .
Audi lane assist: Currently unavailable
A temporary malfunction is preventing lane
assist from operating. Try switching lane as­
sist on again later.
Audi lane assist: System fault!
Drive to your authorized Audi dealer soon to
have the malfunctio n corrected.

98 Audi lane assist
Setting the warning point and steering
wheel vibration
Applies to vehicles: with lane assist
You can adjust individual settings in the MMI.
.. Se lect: ICARI funct ion 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 veh icle is approaching the
line. The distance at which the warning is giv­
en increases as the angle becomes sharper. If
you dr ive towa rd a bounda ry line at a very
sha rp angle, the warning will come just before
a wheel touches the line.
Medium : With this setti ng, the warn ing po int
is adapted to the course of the road, the lane
width and the speed. You wi ll sti ll be warned
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 v ibration can be set to
Low , Medium or Strong . Selecting each of the
settings will cause the steering wheel to vi­
b rate 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 contro l key being
used .

Audi side assist Lane Change Assistant
Description
App lies to vehicles: with si de assist
Fig . 10 1 Sensor detection range
Fig. 102 Disp lay on the exterior mirror
Side assist he lps you monitor yo ur blind spot
and traffic behind your veh icle. W ith in the
limits of the system, it warns you about vehi­
cles that are coming closer or that are travel­
i n g with you with in sensor range
(D
c::, fig . 101: if a lane change is class ified as crit­
ical, the display @ in the exterior mirror
c::> fig. 102 turns on.
The display in the left exterior mirror provides
assistance when making a lane cha nge to t he
l eft, while the display in the right exter ior mir­
r or p rov ides assistance when making a lane
change to t he right.
Information stage
As long as you do not activate the turn signal,
side assist
informs you about vehicles that are
detected and class ified as crit ica l. The display
i n the respec tive mirro r turns o n, but is d im .
Aud i side assist 99
The display remains d im intentionally in the
information stage so that your view toward
the front is not disturbed .
Warning st age
If you activate the turn signal, s ide assist
warns you about veh icles that are detected
and classified as critical. The display in the re ­
spective mirror blinks brightly . If this hap­
pens, check traff ic by glancing in the rearview
mirror and over your shoulder¢
A in General
information on page 100.
@ Tips
- You can adjust the brightness of the dis­
play @¢
page 101.
-Please refer to the instructions fo r tow­
ing a trailer located in¢
page 100.

100 Audi side assist
General information
App lies to vehicles: with side assist
®
©
Fig. 103 Driving s it u at ions
A U D I
• 0
Fig . 104 Rear of th e ve hicle: pos it io n of t he se nso rs
Side assis t fu nctions at speeds above ap prox i­
ma tely 19 mph (30 km/h).
(D V ehicles that are approaching
In certain cases, a vehicle will be classified as
cr itical for a lane change
even if it is still
somewhat far away. The fas ter a vehicle ap­
p ro aches, the sooner the disp lay in the exteri­
or m irror will t urn on.
@ Vehicles traveling with you
Vehicles traveling w ith you are indicated in the
exterior m irror if they are classified as cr it ical
for a lane change. All vehicles detec ted by
side assis t are in dicated by the time they en­
ter your "blind spot", at the latest.
@ Vehicles left behind
If you s low ly pass a ve hicl e tha t sid e ass ist has
dete cted ( the difference in s peed between the
vehicle and you r vehicle is less than 9 mph or
15 km/ h), the display in the exterio r mirror
turns on as soon as the vehicle enters your blind spot.
The disp lay wi ll not t urn on if you quickly pass
a vehicle that s ide assist has detected (t he d if ­
f erence in speed between the ve hicle and your
vehicle is greater than 9 mph or 15 km/h).
Functional limitations
T he radar senso rs are designed to detect the
left and right adjacent lanes when the road
l anes a re the normal width. In certain situa­
t ions, the d isp lay in the exterior mirror may
turn on even though there is no ve hicle locat­
ed in the area that is cr itical fo r a la ne cha nge.
Fo r example:
- if the lanes are narrow or if your are driving on the edge of your lane. If this is the case ,
the system may have detected the vehicle in
another lane that is
not adjacent to you r
cur rent lane .
- if you a re driving through a c urve . Side assis t
may react to a vehicle that is one lane ove r
from the adjacent lane .
- if side assist reacts to other objects (such as
high or d isp laced gua rd rails) .
- In poor weather conditions. The side assist
fu nctions are limited .
Do not cover the radar sensors
c::> fig. 104 with
stickers, depos its, bicycle wheels or other ob­
jects, because this wi ll affect the funct io n. Do
not use s ide ass ist when towing a trailer . For
information on cleaning, refe r to
c::> page 205 .
&_ WARNING
-Always pay a tten tion t o traffic and to the
a rea around your ve hicl e. Side a ssist can ­
no t repla ce a driver's atte ntion. The driv ­
er a lone is always respons ible fo r lane
cha nges a nd similar driving mane uvers.