2015 AUDI A3 light

84 Audi adaptive cruise control
Adaptive cruise control
Description
Applies to vehicles: with Audi adaptive cruise co ntrol
)
Fig. 73 Detect ion range
What can ad apti ve crui se contr ol do ?
The adaptive cruise contro l system uses radar
and a video camera. The radar is subject to
designated system limits¢
page 82.
On open roads with no traffic, it functions like
a cruise contro l system. The stored speed is
maintained. When approaching an object
ahead and the system detects it, the adapt ive
cru ise control system automatically brakes to
match that object's speed and then maintains
the stored d istance. As soon as the system
does not detect an object ahead, adaptive
cr uise contro l accelerates up to the stored
speed.
Applies to vehicles w ith an automatic trans­
miss ion*: Within the limits of the system,
adap tive cr uise control ca n bra ke in stop-and­
go traffic until t he vehi cle is station ary and
then begin driving again under cer tain condi­
tions ¢
page 86, Driving in stop-and-go
traffic .
Which functions can be controlled?
When you sw itch adaptive cru ise con tro l on,
you can set the cu rren t speed as the "control
speed"
¢ page 84, Switching on and off .
When driving, you can stop cruise co ntrol
¢
page 86 or change the speed ¢ page 85
at any t ime.
l ) Speed lim its depend on t he cou ntry and t he speedom ­
eter .
You can also adjust the following settings:
- Distance
¢ page 87
-Dr iv ing program¢ page 88
-Dr iving mode ¢ page 88.
Switching on and off
App lies to vehicles: wit h Audi adapt ive cr uise contro l
Fig . 74 Operating lever: switc hing on and off
Fig. 75 Instrument cluster: adaptive cruise control
You can set any speed ll betwee n 20 mph and
95 mp h (30 and 150 km/h).
In dicator lights and mess ages in the ins tru­
ment cluster d isp lay inform yo u about t he cur­
r en t situation and settings.
Switching adaptive cruise control on
"' Pull the lever towa rd you into position (D
¢ fig. 74 . ACC: standb y appea rs in the in­
s trumen t cluster display.
Saving the speed and activating
regulation
"' To save the current speed, press the !SETI
¢fig. 74 butto n. The stored speed is show n
in the tachometer L ED line @and appears
briefly in the information line@¢
fig. 75 . .,..

.. Automa tic transmission: To activate the reg ­
ulation while stationary , you must press the
brake pedal.
Switching adaptiv e cruise control off
.. Push the lever away from you into position
@ until it cl icks into p lace. The message
A CC: off appears.
The stored speed in the L ED line is erased.
@ Indicato r lights
II -adaptive cruise contro l is switched on . No
objects are detected ahead. The sto red speed
is ma inta ined .
• -An object ahead was detected . The adap­
tive cruise control system regulates the speed
and distance to the object ahead and brakes/
accelerates automatica lly.
fai -Automatic transmission: The adapt ive
cr uise control is switched on . An object ahead
was detected. Your vehicle remains stopped
and will not start driving automatically .
• -The automatic brak ing is not eno ugh to
maintain a sufficient d istance to an object
ahead . Yo u must intervene
¢ page 88, Re­
quest for driver intervention.
© Instrument cluster display
I f adap tive cruise contro l is not shown in the
instr ument cluster disp lay, you ca n call it up
using the mu ltifunction steering wheel but ­
tons
¢ page 2 7 .
B ased on t he g raphics in the display, you can
dete rmine if the system is maintaining a dis­
tance to a veh icle ahead and what that dis ­
tance to this vehicle is:
N o vehicle -No object ahead was detec ted .
White vehicle -An object ahead was detected .
Red vehicle -Request for the dr iver to take ac­
t ion ¢
page 88 .
Both arrows on the scale © indicate the dis­
tance to the object ahead. No arrow appears
when the vehicle is on an open road and there
Audi ad apti ve crui se control 85
is no object ahead. If an object is detected
ahead, the ar row moves on t he scale.
T he green zone on t he sca le indicates the
store dis tance . Fo r informa tion on chang ing
the distance, refe r to ¢
page 87. If the dis ­
tance selected is exceeded or not reached, the
arrow moves into the red zone on the scale.
_& WARNING
Improper use of the adaptive cruise con­
trol can cause collisi ons, other accidents
a nd se rious personal injur ies.
- Automatic transmission: If you press the
ISETI butto n when dr iv ing at speeds be­
low 20 mph (30 km/h) , the veh icle accel ­
erates au tomatically up to 20 mph
(30 km/h), which is the mi nimum speed
th at can be set.
{i) Tips
- If you switch the ignit ion or the adaptive
cruise cont rol system off, the set speed
is e rased fo r safety reason.
- With the adaptive cruise control activat­
ed the ESC spo rt mod e cannot be activat­
ed.
- The e lectronic stab ilizat ion cont ro l (E SC)
and the anti-slip-regulat ion (ASR) are a u­
t oma tic a lly turned on w hen the adapt ive
c ruise cont ro l is turned on. Bot h sys tems
canno t be turned off if the a daptive
cruise cont rol is turned on .
Changing the speed
Applies to vehicles: with Audi adaptive cru ise control
0
f
jJ
0
Fi g. 76 Operat ing leve r: c ha ng in g the spee d
0)
"' 0 i.
" a,

88 Audi adaptive cruise control
you can have the adaptive cruise control
me nu extende d I enabled from an autho r­
ized re pair faci lity.
Setting the driving program
Applies to vehicles: with Audi adaptive cruise control
A adaptive cru ise control driving program is
adjustab le on vehicles without Aud i drive se­
lect* .
.. Se lect in the MMI:
!MENUI button> Systems
or Car systems > Driver assistance > Adap·
tive cru ise control
> Driving program >
comfort /standard /dynamic .
Selecting the driving mode
App lies to vehicles: with Audi adaptive cruise control
The adaptive c ruise co ntro l dr iv ing prog ram is
ad justa ble for ve hicles w ith Au di drive se lect
usi ng the dr iv ing mode.
.. Se lect t he des ired driv ing mod e
comfort ,
auto , dynamic
or individual* with the knob
¢ page 10 2.
Request for driver intervention
App lies to vehicles: with Audi adaptive cruise control
Fig . 7 9 In st rum ent clus ter : d river interve ntio n re qu est
In some s ituations, the braki ng from the
adapt ive cr uise control system is not enoug h
to maintain enoug h distance to the object
a head . In these situations, the system will re­
q ues t yo u to take action .
The . indicator light and the graphic in the
d isplay w ill wa rn you about the danger
¢
fig. 79. You will a lso hear a n aud io signa l.
P ress the br ake pedal to s low y our veh icle
do wn .
Driver messages
Applies to vehicles: wit h Aud i adapt ive c ru ise control
IIJ ACC : unavailable
The system cannot gu arantee that it will de­
tect o bject s cor rectly and i s switched off. The
sens or was m ove d or is fa ulty. Drive to your
autho rize d Audi dea le r or a uth ori zed Audi
service facility immediately to have the ma l­
f unct ion corrected .
Ill ACC: currently unavailable . No sensor vi·
sion
fl ACC and Audi pre sense : currently un ­
available. No sen sor vision
T h is message appears if the senso r view is ob·
structe d, for examp le by l eaves, snow, heavy
s pr ay or d irt . C lean t he sensor ¢
page 82,
fig. 70 .
ill ACC: currently unavailable. Gradient too
steep
The road exceeds t he max imum possible an­
gle fo r safe adaptive cruise control operation.
T he adapt ive cr uise control cannot be switch­
ed o n.
ill ACC: only available in D, Sor M
Se lect the D/S or M selector leve r position .
ill ACC: parking brake applied
The adapt ive cr uise control system switch es
off automa tically if th e parki ng br ake is set.
T he adapt ive cru ise con tro l is ava ilable again
aft er re leas ing t he pa rking br ake.
ill ACC: currently unavailable. Stabilization
control input
This message appears if the Electronic Stabili ­
zation Control (ESC) is taking action to stab i·
l ize the veh icle. I n this case, adapt ive cr uise
control switches off automat ica lly .
ill ACC off: manual control!
This message a ppears if t he vehicle ro lls back
whe n start ing on a s light incline, even though
ACC is active. Press the b rake pedal to prevent
the vehicle from rolling or starting to move. .,.

90 Audi pre sense
Audi pre sense
Introduction
Applies to vehicles: with Audi pre sense basic or Audi pre
sense front
Within the limits of the system, pre sense ba­
sic and pre sense front can initiate steps to
protect vehicle occupants in certain danger ­
ous situations.
Critical driving situations can be recognized by
the pre sense front via a network of different
vehicle systems and can take steps to prepare
the vehicle occupants for a potential collision.
The pre sense front works with a radar sensor
and a video camera*.
It also functions within
the limits of the system when adaptive cruise
control* is switched
off.
General information
General information
App lies to vehicles: with Audi pre sense front or Audi
adaptive cruise control
A WARNING
Also follow the general information found
on
~ page 82, General information.
Audi pre sense basic
Descript ion
Applies to vehicles: with Audi pre sense basic
The function of the pre sense basic is activat­
ed at a speed of 10 mph (30 km/h) or higher.
The following functions can be triggered un­
der certain conditions within the limits of the
system:
- Tensioning of the safety belts (for example,
during heavy braking) : The front safety belts
have reversible belt pretensioners. If a colli­
sion does not occur, the safety belts loosen
slightly and are ready to trigger again .
- Closing the windows and the sunroof* (for
example, when over- or understeering): The
windows and the sunroof" close until there is only a small gap open. Audi drive select:
The deployment time is
adapted in dynamic mode.
A WARNING
-The pre sense basic cannot overcome natu- ral physical laws.
It is a system designed to
assist and it cannot prevent a collision. Do not let the increased safety provided
tempt you into taking risks. This could in­
crease your risk of a collision.
- The system can deploy incorrectly due to system-specific limits .
(D Tips
-Certain pre sense basic functions switch
off when ESC is switched off (sport
mode) or when driving in reverse .
- The pre sense basic functions may not be
available if there is a malfunction in the
ESC system or the airbag control mod­
ule .
- Note that with pre sense basic, the rever­
sible safety belt pretensioner on the
front passenger's side deactivates when
the front passenger's a irbag is deactivat­
ed.
Audi pre sense front
Description
Applies to vehicles: with Audi pre sense front or Audi
adapt ive cru ise control
Pre sense front informs you if the distance to
the vehicle ahead falls below the safe distance
for an extended period of time. It can warn of a possible collision and initiate braking ma­
neuvers, within the limits of the system .
When detected in time, the system can assess
dangerous situations where an object ahead
brakes suddenly or if your own vehicle is trav­
eling at a high speed and approaching an ob ­
ject that is moving more slow ly . If detection is
not possible, then pre sense front does not re ­
act.

Warnings
Applies to vehicles: with Audi pre sense fro nt or Audi
adaptive cruise control
Fig . 80 Instrument cluster: approach warning
The system recognizes various dangerous sit­
uations:
- Vehicles with adaptive cruise control: The
distance warning occurs if you drive too
closely to the object ahead for a long period
of time.
If the object ahead brakes strongly,
you would not be able to avoid a collision.
The ind icator light . indicates this.
- The
approach warning occurs when an ob­
ject ahead is traveling more slowly or brakes
strongly. When this warning occurs, it may only be possible to avoid a collision by
swerving or braking strongly. The message
Audi pre sense. Distance c::> fig . 80 and a
warning tone will warn you about the dan­ ger. For vehicles with adaptive cruise con­
trol, the. indicator light also turns on.
If you do not react enough or not at all to a
dangerous s ituation that was detected by the
system, pre sense front provides assistance by
applying the brakes .
- If a collision is imminent, the system will
first provide an
acute warning by braking
sharply. You will also be made aware of the
danger by the instrument cluster display
c::> fig. 80. For vehicles with adaptive cruise
control, the. indicator light also turns on .
-If you do not react to the acute warning, pre
sense front can brake with increasing force
within the limits of the system
l)_ This re­
duces the vehicle speed in the event of a col-
l l This is not available in some countries .
Audi pre sense 91
lision. The message Audi pre sense -Input
also appears.
- At low driving speeds, pre sense front can
begin complete deceleration shortly before
a collision
l) .
-If pre sense front determines that you are
not braking strongly enough when a colli­
sion is imminent, it can increase the braking
force.
A WARNING
--- Pre sense front cannot overcome natural
physical laws.
It is a system designed to
assist and it cannot prevent a collision .
The driver must always intervene. The driver is always responsible for braking
at the correct t ime. Do not let the in­
creased safety provided tempt you into
taking risks. This could increase your risk
of a collision.
- The system can deploy incorrectly due to
system-specific limits .
- Please note that the sensor does not al­
ways detect all objects . This increases
the risk of a collision.
- Pre sense front does not react to people
or animals or objects that are crossing
the vehicle's path or are difficult to de­
tect
c::> page 82, General Information.
- Reflective objects such as guard rails or
the entrance to a tunnel, heavy rain and
ice can affect the function of the radar
sensor and the system's ability to detect
a collision risk .
- Lack of attention can cause collisions,
other accidents and serious personal in­
juries. The pre sense front is an assist
system and cannot prevent a collis ion by
itself. The driver must always intervene.
The driver is always responsib le for brak­
ing at the correct time.
- Always pay close attention to traffic,
even when the pre sense front is switch-
ed on. Be ready to intervene and be ready .,_

94 Audi acti ve lan e assi st
Audi active lane assist
Lane assist
Description
App lies to vehicles: with Audi active lane assist
Active lane ass ist detects lane marker lines
within the limits of the system using a camera
in the windshield . If you are approaching a de­
tected lane marker line and it appears likely
that you wi ll leave the lane, the system will
warn you with corrective steering. You can
ove rride this steering at any time . If you pass
over a line, the steering wheel will vibrate lightly. In order for this warning vibration to
occur, it must first be switched on in the MMI.
Active lane ass ist is operable when the lane
marker line is detected on at least one side of
the vehicle .
The system will not warn you before cross ing
a lane marker Line if you have activated the
turn signal. In t his case, it assumes that you
a re changing lanes intent ionally.
The system is designed for driv ing on express ­
ways and h ighways and therefore only acti­
vates at speeds above app roximately 40 mp h
(65 km/h).
A WARNING
- The sys tem w arns the d river that the ve­
hicle is leaving the lane us ing corrective
steering . The driver is always responsible
for keeping the vehicle within the lane .
- The system can help you keep the vehicle
in the lane, but it does not drive by itself.
Always keep your hands on the steering
wheel.
- Co rrective stee ring may not occur in cer­
tain situations, such as d uring heavy
braking.
- There may be cases where the camera
does not recognize all lane marker lines.
Corrective steering can only take p lace
on the side of the veh icle where lane
marke r lines a re detected .
l) Thi s func tion is not available in a ll co untries.
- Other road structures or objects cou ld
possibly be identified un intent ionally as
lane marker lines. As a result, correct ive
steer ing may be unexpected or may not
occ ur.
- The camera view can be restricted, for
examp le by vehicles driving ahead or by
ra in, snow , heavy spray light shining into
the camera or by dirt on the window . T his
can result in act ive lane assist not detect­
ing the lane marke r lines or detec ting
them incorrect ly .
- I n certain sit uat ions where visibili ty is
low, the vehicle may swi tch from "early"
to "late" corrective steering
l).
-Unde r ce rtain condi tions such as ruts in
the road, an incl ined roadway or c ross­
winds, the corrective steering alone may not be enough to keep the vehicle in the
middle of the lane.
- For safety reasons, active lane assist
must not be used when the re a re poor
road and/or weather conditions such as
slippery roads, fog, grave l, heavy rain,
snow and the potential for hydroplaning .
Using act ive lane assist under these con­
d itions may increase the risk of a c rash .

Switching on and off
Applies to vehicles: with Audi active lane assist
•
Fig. 81 Turn signal lever: butto n for act ive la n e ass ist
Fig. 82 Windsh ield: ca mera w indow for act ive lane as ­
s is t
.. Press the~ fig. 81 button to switch the sys­
tem on and off. The . or. indicator light
in the instr ument cluster turns on or off.
Indicator lights
• Ready:
The indicator light turns on when
the system is ready for use. The system can
now be operated .
• Not Ready : The indica tor light turns on if
the system is switched on but is inoperable.
This may be due to the following reasons:
- 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 obstructed by
snow, dirt, water or light ing) .
- The vehicle speed is below the activation
speed of approximately 40 mph (65 km/h)
(the speed may vary depending on your
country) .
- The lane is narrower than 8
ft (2 .5 m) or
wider than 18
ft (5.5 m).
- The curve is too narrow.
Audi active lane assist 95
-The driver's hands are not on the steering
wheel.
a) Tips
- Make sure the camera's field of view
~ fig. 82 is not obstructed by stickers or
other objects. For information on clean ­
ing, see¢
page 201 .
-Market-specific: In certain countries: If
the system is switched on, it wi ll remain
operab le each time the ignition is switch­
ed on.
lane assist display in the instrument
cluster
Applies to vehicles: with Audi active lane assist
Fig. 83 Ins trumen t cluster: monoc hrome d ispl ay
Fig. 84 Instrume nt clust er: mult icolored d isp lay
The lane assist display can be called up using
the buttons in the
multifunction steering
wheel* ¢
page 27.
Monochrome display
Refer to ~ fig. 83

96 Audi active lane assist
@ So lid lines: act ive la ne assist is sw itch-
ed on and ready to provide wa rn in gs on
t he s ide th at is indica ted.
@ B linking lines ( left or right): active lane
assist is warning you by a vibration in
t he stee ring wheel that yo u are l eaving
t h e l ane.
® Unfilled line(s): active lane assist is
switched on but is not rea dy to prov ide
warnings.
N o lines: t he active lane assist is
switched
off .
Multicolored display
Refe r to¢ fig. 8 4
@ Solid white lines : active la ne assist is
switched on and ready to provide warn-
ings on the side that is ind icated.
@ Red lin es (left or r igh t): ac tive lane as-
sis t is warning you by a vibration in t he
steering whee l th at you a re leav ing the
lane.
® Gray unfilled lines: active lane ass ist is
s witched on but is not ready to prov ide
w ar nings.
N o lines: the active lane assist is
switched
off.
Messages in the instrument cluster
display
I f the active lane ass ist has a mal func tion, the
B indicato r light in the inst rumen t cluste r
di spl ay t urn s
off and one of the followi ng
me ssages appe ars:
Audi active lane assist: currently not avai la ­
ble. No camera view
This message appears if the camera is unable
to detect the li nes . This co uld happe n if:
- The came ra field of view ¢
page 95, fig. 82
is dirty o r covered i n ice. Clean the area on
t h e windshie ld.
l ) Thi s function is not available in all cou ntr ies.
- The camera field o f view is fo gged ove r. Wa it
until the fog has cleared before switching
the act ive lane assist on agai n.
- The system has bee n una ble to detect t he
lanes for an exten ded period of t ime due to
road conditions. Switch the active lane as­
sist bac k on when the lines are more v is ible.
Audi active lane assist: currently unavailable
T he re is a te mporary a ct ive lane assis t mal­
f unc tion. Try swi tching the active lane assi st
o n again later .
Audi active lane assist: system fault!
Drive to an authorized A udi dealer or qualified
repair fac ility immediately to have the mal­
funct ion corrected.
B Audi active lane assist: Please continue
steering vehicle!
T his messa ge ap pears if yo u are not stee ring
by yoursel f. If th is is t he case, act ive lane as ­
s ist does not switch
off, but it is "not ready" to
provide a warning. The system can help you
kee p the vehicle in the lane. However, yo u are
r esponsible for dr iv ing the vehicle and must
stee r it yourse lf .
Adjusting the steering time and
vibration warning
App lies to veh icles: w ith Audi ac tive la ne ass ist
You can adju st individual active lane assis t
se ttings in the MMI.
"' Select: !ME NUI button> Systems cont ro l
but to n or
Car sy stem s > Driver assistance >
Audi active lane assist .
Steering timel)
Early :
in this setting, the correct ive steering
happens con tinuously to he lp keep the vehicle
i n t he c ent er of t he lane.
Late : in this setting, the system provides cor ­
rect ive steer ing just befo re a vehicle whee l
touches a detected lane marke r line . ..,.