2013 AUDI A8 sensor

48 Clear vis ion
instrument cluster illuminates when the
high beams are on.
- T he
headlight flash er works only as long as
yo u hold the lever -even if there are no
li ghts turned on . The indicator light
El in
the instrument cluster i llum inates when you
use the headlight flasher.
A WARNING
Do not use the hig h beam or headlight
flasher if you know that these could blind
oncoming traffic.
High beam assist
App lies to vehicles: with high beam assist
The high beam assist au tomatically swi tches
the high beams on or off, depending on the
surroundings and traffic conditions .
Fig. 40 Turn sig na l an d high beam leve r: T urnin g on
an d off the high be am assist
Act ivating h igh beam a ssis t
8
9 :r ... (0
Requirement: The light sw itch must be in the
AUTO position, the low beam headlights must
be on and the high beam assis t must be
switched on in the Infotainment <=>
page 47.
.. Press the leve r into position @ in order to
act ivate the high beam assist . The indicator
li ght
ml turns on in the instrument cluster
display and the h igh beams switch on or off
automat ically. The indicato r light
El turns
on if the high beams were switched on .
Switching the high beams on /off
manually
Requi rement : Hig h beam ass ist is activated .
If the high beams d id not switch on/off a uto­
matically when expected, you may instead
switch them on/off manually:
.. To swi tch the hig h beams o n manually ,
press the lever into position
(D . The indica ­
to r li ght
II turns on. To switch the high
beams off again, pull the lever into pos ition
@ .
.. To switch the hig h beams off man ually after
they have turned on automat ica lly, pull the
lever i nto pos it io n @ .
Oper ating the headlight flasher
.. To operate the flashers while the h igh beam
assist is act ive, pu ll the lever into position
@ . The high beam assist will remain act ive.
Messages in the in strument clu ster
di splay
Headlight assist: System fault
D rive to your authori zed A udi dealer immedi ­
ately to have the ma lfunction corrected. Yo u
can still switch the high beams on or off man­
ually.
Headlight assi st: Unavailable. No camera
view
T he came ra v iew is b locked, for examp le by a
sticker or deb ris .
T he sensor is loca ted between the inter io r
r earview mirror a nd the w indshield. There­
f ore , do no t place any s tickers in this a rea o n
t h e windshie ld .
Service setting
The re is a different sens it iv ity sett ing for serv­
ic ing . Thi s sett ing can be activat ed by pressing
and holding the b utton on the in ter io r r ear­
view m irror for mo re th an 18 seconds. The
LE D next to the button blinks three times.
If
yo u have accidentally se lected this service
funct ion, the orig inal sensitivity will be a uto­
matically restored the next t ime yo u sw itch
t h e ignit ion on. ..,.

_& WARNING
High beam assist is only i ntended to assist
the driver . The driver is sti ll responsible for
cont ro lling the h eadlights and switching
the high beams on and off manually de­ pen ding on traffic, ligh ting and visibili ty
condi tions. Failure to interve ne manually
may lead to r isk o f accident . It m ay be nec­
essary to operate the high beams man ual ­
ly in the following sit uat ions, e .g .:
- For adverse wea ther conditions such as
fog, heavy rain, blowing snow or s praying
water .
- On roads where oncoming traffic may be partia lly obsc ured s uch as exp ressways .
-If there are in dividuals on the road wi th
no light ing or poor lightin g, such as cy ­
cli sts .
- In tight c urves and on steep slopes .
- In po orly lit areas.
- With stro ng re flecto rs su ch a s signs.
-If the area of t he wind shie ld nea r th e
sensor is fogg ed over, d irty, icy or cov­
ered w it h a st icker.
(D} Tips
- The high beam ass ist is active above a
speed of approx . 25 mph (40 km/h).
- If afte r activation, you r speed falls below
approx . 15 mph (24 km/h), the hig h
beams w ill automa tica lly be switched
off .
Interior lights
Front and rear interior lighting
Fig. 41 Headl iner: Front in te ri or l ights
Clear vi sion 49
Fig . 4 2 Rea r headliner: Read ing l ig ht
Press the appropriate button r::;, fig . 41:
El-Inte rior light ing on/off
~ -Door contact swi tch. The interio r ligh ting
turns o n automatically when yo u unl ock the
v e hicle, open a door or sw itch the ignition
off .
The inter ior light ing turns off s evera l seconds
after you close the doors, when you lock the
vehicle or when you switch the ignition on .
When a doo r is open, the l ight turns off after
a few minutes.
~ -Read ing lights on/off
@[I -Switching the rear read ing lights on/off
from the cockpit.
I REAR MODE i* -Sw itch ing the rea r reading
li gh ts on/off from the cockpit: press the
I REAR MODE i bu tton and then the appropriate
button ~ in the cockpit.
Ambience lighting
App lies to vehicles : wit h ambience lig hting
You can select a color profile and br ightness
for t he ambie nce lighting in various areas of
the veh icle, called zones .
Turning ambience lighting on
.. Select in the MMI: ICAR lfunction button>
Car systems control button > Vehicle set­
t ings > Interior light ing > On .
Adjusting /turning off the brightne ss
.. Select in the MMI: ICAR lfunction button>
Car systems control b utton > Vehicle set­
tings
> Inte rior lighting > Brightness .

52 Clear vision
Wiper and washer
system
Switching the windshield wipers on
Fig. 48 Wind shie ld wipe r lever
Move the windshield wiper lever to the corre­
sponding position:
@ - Windshield wipers off
(I) -Rain sensor mode. The windshield wipers
switch on once the vehicle speed exceeds ap­
proximately 2 mph (4 km/h) and it is raining.
The higher the rain sensor sensitivity is se t
(switch @to the right), the earlier the wind­
shield wipers react to moisture on the wind­
shield. You can deactivate rain sensor mode in
the MMI, which will then activate intermittent
mode. Select:
ICARI function button > Car sys­
tems
control button > Driver assist > Rain
sensor
> Off. In intermittent mode, you can
adjust the interval time using the switch @.
@-Slow wiping
@-Fast wiping
© -Single wipe. If you hold the lever in this
posi tion longer, the wipers switch from slow
wiping to fast wiping .
® - Clean the windshield . The wipers wipe
one time after several seconds of driving to remove water drople ts. You can switch this
function off by moving the lever to position ®
within 10 seconds after the afterwipe . The af­
terwipe function is reactivated the next time
you switch the ignition on.
Cleaning the headlights. The headlight wash ­
er system* only functions when the headlights
are on . If you move the lever to position ®, the headlights and the night vision system
camera* are washed in intervals.
.&_ WARNING
-
- The rain sensor is only designed to assist
and support the driver.
It remains entire­
ly the driver's responsibility to monitor
outside weather conditions and to man­
ually activate the wipers as soon as rain
or drizzle reduces visibility through the
windshield.
- The windshield must not be treated with
water-repellent materials. They can in­
crease glare under poor visibility condi­
tions such as wetness, darkness, or when
the sun is low on the horizon. In addi­
tion, they can cause the windshield wip­
ers to chatter.
- Properly functioning windshield wiper
blades are required for a clear view and
safe driving
q page 53, Replacing
windshield wiper blades.
(D Note
- In the case of frost, check whether the
windshield wiper blades are frozen to
the windshield. Switching on the wind­
shield wipers can damage the wiper
blades!
- Prior to using a car wash, the windshield
wiper system must be switched off (lever
in position @). This helps to prevent un­
intentional switching on and damage to
the windshield wiper system.
- Do not use the wipers to clear a frosted
window . Using the wipers as a conven­
ient ice scraper will destroy the wiper
blades .
(D Tips
-The windshield wipers are switched off
when the ignition is off . Activate the
windshield wipers after the ignition is
switched back on by moving the wind­
shield wiper lever to any position.
- Worn or dirty windshield wiper blades
result in streaking. This can affect the

rain sensor funct ion . Check your
windshield wiper b lades regularly.
- The washer fluid nozzles of the wind­
sh ield washer system are heated at low
temperatures when the ig nitio n is on .
- When stopping temporarily, e .g. at a
traffic light , the set speed of the wind­
sh ield wipers is automatically red uced by
one speed.
Replacing windshield wiper blades
Wip er blad es in good condition h elp keep the
windshield clear.
Fi g. 49 Rem ov ing wi nds hield w iper bla des
Service pos ition
.. Switc h the windshield wipers off (posit ion
@ ¢
page 52, fig . 48).
.. Se lect in the M MI:: !CAR ! function button>
Car s ystem s control button > Servicing &
che ck s > Wip er servic e po sition > On . The
wi ndshield wipe rs move into the serv ice po­
s ition.
Or
.,. Swi tch the ignition off and move the wind­
shield wipe r lever to posit io n © ¢
page 52 ,
fig . 48.
R emoving the wiper blade
.. Fold the w indshield wipe r arm away from
t h e windshie ld.
.,. Press the locking knob(!)
¢fig. 49 on t he
wiper blade . Hold the wiper blade fi rm ly.
.. Remove the w iper blade in the direction of
the arrow .
Clear vision 5 3
Installing the wiper blade
.. Insert the new w iper blade into the mount
on the wiper arm @unti l you hear it latch
i nto place .
.. Place the wiper arm back on the windshield.
.. Switch the ignit ion on.
.. Select:
I CAR ! function button > Car systems
control button > Servicing & checks > Wiper
serv ice position > Off .
Or
.. Press the windshie ld wiper lever.
.&_ WARNING
- If the windshie ld w ipers smear the w ind­
shie ld , clean the wiper b lades with wind­
shie ld washer fluid. If the w iper blades
are ex tremely dirty, you can a lso clea n
them with a so ft sponge o r clo th.
- For your safety, you should rep lace the
wiper blades once o r twi ce a year. See
your author ized Audi dealer for replace­
ment b lades.
(D Note
- T he windsh ie ld w iper blades m ust only
be folded aw ay whe n in the service pos i­
tion! Otherwise, yo u ris k damaging the
paint on the hood or the windshie ld wip ­
er motor.
- Yo u should not move your vehicle or
press the windshield wiper lever when
the wipe r arms are folded away from the
w indshield. The windsh ield wipers wou ld
move back into their or iginal position
and could damage the hood and wind­
shield .
- To help prevent damage to the w iper sys­
tem , always loosen blades wh ich are fro­
zen to the windshield before operating
w ipers .
- To help p revent damage to wiper blades,
do not use gasoline, kerosen e, paint
thinne r, or other solvents on or near the
w iper blades .
- T o help prevent damage to the w iper
arms or other components, do not at-
t empt to move the wipe rs by hand. .,._

Audi adapt ive crui se c ontrol an d bra kin g guard 9 3
Audi adaptive cruise
control and braking
guard
Introduction
App lies to vehicles: with Audi adaptive cruise control
The adaptive cruise control system assists the
driver by regu lating vehicle speed and helping
to maintain a set distance to the vehicle
ahead, within the limits of the system . If the
system detects a moving vehicle up ahead,
adaptive cruise control can brake and then ac­
celerate your vehicle. This helps to make driv­
ing more comfortable both on long highway
stretches and in stop-and-go traffic.
The braking guard system can warn you about
an impending collision and initiate braking
maneuvers ¢
page 99.
Adaptive cruise control and braking guard
have technical limitations that you must
know, so please read this section carefully, un­
derstand how the system works and use them
properly at all times.
General information
General information
Applies to vehicles: with Audi adaptive cruise control
Fig. 93 Front of the vehicle: sensors and video came ra
The areas that contain the radar and ultrason ­
ic sensors and the v ideo camera ¢
fig. 93
must neve r be covered by stickers or other ob­
jects or obstructed with dirt, insects, snow or
ice that will interfere with the adaptive cruise
control system and braking guard. For infor­
mation on cleaning, refer to ¢
page 218. The same applies for any modifications made in
the front area.
T he function of the adaptive cru ise contro l
system and braking guard is limited under
some conditions:
- Objects can on ly be detected when they are
w ith in sensor range
¢page 95, fig. 96 .
-The system has a limited ability to detect
objects that are a shor t distance ahead,
off
t o the side of your vehicle or moving into
your lane.
- Some kinds of ve hicles are hard to detect;
for examp le motorcycles, vehicles with high
ground clearance or overhanging loads may
be detected when it is too late or they may
not be detected at all.
- When driving through curves
¢page 94 .
- Stationary objects¢ page 94.
& WARNING
Always pay attent ion to traffic when adap ­
tive cruise control is switched on and brak­ ing g uard is active. As the driver, you are
still respons ible for starting and for ma in­
taining speed and distance to other ob­
jects . Braking guard is used to assist you .
The driver must always take action to avo id
a collision. The driver is always responsible
for braking at the co rrect time.
- Improper use of adaptive cru ise control
can cause collisions, other acc idents and
serious pe rsonal in jury.
- Never let the comfort and conven ience
that adaptive cruise control and braking
guard offer d istract you from the need to
be alert to traffic condit ions and the
need to rema in in full control of your ve­
hicle at all times,
- Always remember that the adaptive
cruise control and braking guard have
limits -they will not s low the vehicle
down or maintain the set distance when
you drive towards an obstacle or some­
thing on or near the road that is not
mov ing, such as vehicles stopped in a
traffic jam, a stalled or disabled vehicle .
I f registered by the radar sensors,

94 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. 9 4 Exampl e: dri ving in to a curve
When d riving into a curve c> fig. 94 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. 95 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 or
ch anges lanes and another stationary vehicle .,.

Audi adaptive cruise control and braking guard 99
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 103 Instrumen t cl uste r: ap proac h warn ing
Braking guard uses radar sensors and a video
camera . It a lso functions within the lim its of
the system whe n 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 y our own veh icle is traveling at a
high speed and approaching a veh icle up
ahead that is moving more slowly . Bra king
g ua rd does not react if i t cannot detect th e
si tuation.
The system advises you of va rious 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 col lisio n. The indicator
light
I i n the display comes on .
- The approach warning is g iven when a de­
tected vehicle up ahead in yo ur lane is mov ­
i ng much more slowly tha n you are o r if it
b rakes sha rply . When this wa rning is given,
i t may only be possib le to av oid a collision
by swerving or br aking sh arply . Th e ind ic a tor
li gh t
I and indicator in the disp lay will warn
yo u about the danger
c::> fig . 103 . You will al­
so hear an acoustic sig na l.
If yo u do not re act fast enoug h or do not re act
at all to the situat io n, braking g uard will inte r-
11
Thi s is not ava ilable in som e coun tri es.
vene by braking and the message braking
guard intervention will appea r.
- If a coll is ion is im minen t, the sy st em w ill
first provi de an acute warning by brie fly and
shar ply a pplying the brakes.
- If you do not re act t o the acu te war ning,
bra king g uard can brake w ith increas ing
force w ith in the lim its of the system. T his
red uces the vehicle speed in the event of a
co llision.
- The system can initiate maximum brak ing
short ly before a co llision
ll. Full dece leration
at high speeds occurs only in vehicles with
adapt ive cr uise control and side assist (pre
sense plus).
- If the brak ing g uard senses that yo u are not
braki ng hard enough w hen a co llision is im­
m inent, it can inc rease t he b ra ki ng fo rce .
- The pre sense functions also engage whe n a
col lision is imm inent
c::> page 196 .
Which function s can be controlled?
You can switc h braking guard an d the dis ­
tance/approach warning on or off in the M MI
c::> page 100, Settings in the MMI.
&_ WARNING
Lack of attent ion can cause collisions, ot h­
e r accidents and serio us pe rsonal inj uries .
Th e braking gua rd is an assist system and
ca nnot pr ev en t a collisi on by its elf . T he
dr iver must always in tervene. The drive r is
al way s res pons ible f or br aki ng a t the cor­
rect t ime.
- Always pay clos e att ention to traffic ,
e v e n w hen the bra king g uard is swi tched
on. Be ready t o intervene and be ready to
take comp lete contro l whenever necessa­
ry. Always keep the sa fe and legal dis ­
tanc e between your ve hicle an d veh icles
up ahead.
- Braking guard works wi thin limits and
wi ll not respo nd outside t he system lim­
its, for e xamp le w hen approaching a
stopped vehicle o r stationary obstacle ..,.

100 Audi adaptive cruise control and braking guard
(end of a traffic jam or vehicle 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 all.
- Reflective surfaces including crash barri­
ers or tunnel entrances may impair the
function of the radar sensor.
(D Tips
- You can cancel the braking with increas­
ing force that is initiated by the system
by braking yourself, by accelerating no­
ticeably or by swerving.
- Braking guard error messages
r::> page 100.
-Keep in mind that braking guard can
brake unexpectedly . Always secure any
cargo or objects that you are transport­
ing to reduce the risk of damage or in­
jury.
Settings in the MMI
Applies to vehicles: with Audi adaptive cruise control
• Select: ICARI function button > Car systems
control button > Driver assist > Audi brak­
ing guard.
System -
Switch braking guard On and Off.
When you switch the ignition on, the message
Audi braking guard off appears if the system
is switched off.
Early warning -The distance and approach
warnings in the display can be switched
On/
Off.
Tips
- Your settings are automatically stored
and assigned to the remote control key being used at the time the settings are
made.
- If you switch the ESC to sport mode,
braking guard switches off automatically
~page 200.
- Switch braking guard off when you are
loading the vehicle onto a vehicle carrier,
train, ship or other type of transporta­
tion. This can prevent undesired warn­
ings from the braking guard system.
Messages
Applies to vehicles: with Aud i adapt ive cru ise contro l
ACC unavailable
ACC and braking guard: unavailable
The system cannot detect moving vehicles up
ahead correctly and is switched off. The sen­
sors have been displaced or are not working
properly. The Audi pre sense functions may al­
so be affected. Drive to your authorized Audi
dealer or authorized Audi service facility im­
mediately to have the malfunction corrected.
ACC: unavailable at this time. No sensor vi­
sion
ACC and braking guide: unavailable at this
time. No sensor vision
This message appears if the sensor view is ob­ structed, for example by leaves, snow, heavy
spray or dirt . Clean the sensors
r:> page 93,
fig. 93.
ACC: unavailable at this time. Incline too
steep
The road exceeds the maximum possible an­
gle for proper adaptive cruise control opera­
tion. Adaptive cruise control is switched off .
ACC: only selector lever positions D, S or M
available
Select the D, Sor M selector lever position.
ACC: unavailable at this time. Parking brake
set
The adaptive cruise control system switches
off automatically if the parking brake is set. .,.