2015 AUDI RS5 CABRIOLET sensor

90 Audi adaptive cruise control and braking guard
Audi adaptive cruise
control and braking
guard
Introduction
App lies to vehicles: with Audi adaptive cruise co ntrol
The adaptive cruise control system assists the
driver by regulating 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 he lps to make driv­
ing more comfortable on long highway
stretches.
The braking guard system can warn you about
an impending collision and initiate braking
maneuvers
c:::> page 96.
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 co ntrol
Fig. 103 Front of the vehicle: Position of radar senso r
The area that contains the radar sensor
c:::> fig. 103 must never be cove red by stickers
or other objects or obstructed with dirt, in­
sects, snow or i ce that will interfere with the
adaptive cruise control system and braking
guard. For information on cleaning, refer to
c:::> page 184. The same applies for any modifi­
cations made in the front area . T
he function of the adaptive cruise cont rol
system and braking guard is limited under
some condit ions:
- Objects can only be detected when they are
within sensor range
c:::>page 92, fig . 106.
-The system has a limited ability to detect
objects that are a short d istance ahead, off
to the side of your vehicle or moving into
your lane.
- Some kinds of vehicles 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
c:::> page 91.
-Stat ionary objects c:::> page 91 .
A WARNING
-
Always pay attention to traffic when adap-
tive cruise contro l is switched on and brak­
ing guard is active. As the driver, you are
still respons ible for starting and for main­
tain ing speed and distance to other ob­
jects. Braking guard is used to assist you.
The driver must always take action to avoid
a col lision. The driver is always responsible
for braking at the correct time.
- Im proper use of adaptive cruise con trol
can cause collisions, other accidents and
serio us personal injury.
- Never let the comfor t and convenience
that adaptive cruise control and braking
guard offer distract you from the need to
be alert to traffic conditions and the
need to remain in full control of your ve­
h icle at a ll times,
- Always remember that the adaptive
cru ise contro l and brak ing guard have
lim its -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.
If registered by the radar sensor, vehicles
or obsta cles that are not moving can
trigger a co llision warning and if

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Audi adapt ive crui se c ontrol an d bra kin g guard 91
confirmed by the video camera, an acute
collision warning.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplan ing). Using the system under
these conditions cou ld result in a co lli­
sion.
- Switch adaptive cruise control off tempo­ rar ily when driving in turning lanes, on
expressway exits or in cons truction
zones. This prevents the vehicle from ac­ celerating to the set speed when in these
situations.
- The adaptive cr uise control system wi ll
not brake by itse lf if you p ut your foot on
the accelerator pedal. Doing so can over­
ride the speed and distance regulation .
- When approaching stationary objects
such as stopped traff ic, adaptive cruise
control will not respond and braking
guard w ill have limited function.
- The adaptive cruise control system and
braking guard do not react to people, an­
ima ls, objects crossing the road or on­
coming objects.
- The function of the radar sensor can be
affected by reflective objects such as
guard rails, the entrance to a tunnel,
heavy rain or ice.
- Never follow a ve hicle so closely that you
cannot stop your vehicle safely. The
adaptive cruise cont ro l cannot slow or
brake the veh icle safely when you follow
ano ther veh icle too closely. Alway s re­
member that the automatic braking
function cannot bring 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 sensor can be disp laced by impacts or
damage to the bumper, whee l housing and
underbody . That could affect the adaptive cruise control
system and braking g uard.
Have your authorized Audi dea ler or au­
thorized Audi Service Facility chec k their
funct ion.
In curves
App lies to vehicles: with A ud i ada ptive c ruise contro l
F ig . 1 04 Examp le : driv ing into a curve
When driving into a curve ¢ fig. 104 and out
of a curve, the adaptive cru ise contro l may re­
act to a vehicle in the next lane and app ly the
brakes. You can override or prevent the brak ­
ing by pressing the accelerator pedal briefly.
Stationary objects
Applies to vehicles: wit h Audi adapt ive cr uise contro l
F ig . 1 05 Examp le: objec t chang ing la n es and stat ion­
a ry object
The adaptive cruise control system only reacts
to objects that a re mov ing or that the system
has a lready detected as moving . For examp le,
if a ve hicl e@ , which has already been detec t­
ed by the adaptive cru ise con trol , turns or
changes lanes and another stationa ry vehicle
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.

92 Audi adaptive cruise control and braking guard
Audi adaptive cruise
control
Description
Applies to vehicles: with Audi adap tive cruise co ntrol
Fig. 106 Detect ion range
What can Audi adaptive cruise control do?
The adaptive cruise control works in conjunc­
tion with a radar sensor installed in the front
of the vehicle¢
page 90, fig . 103, which is
subject to designated system limits
¢page 92. Stationary objects are disregard­
ed .
On open roads w ith no traffic, adaptive cruise
control works like a regular c ruise control sys­
tem. The stored speed is maintained. When
approaching a moving vehicle detected up
ahead, the adaptive cruise control system au ­
tomatically slows down to match that vehi­
cle's speed and then maintains the distance
that the driver previously stored . As soon as
the system does not detect a vehicle up
ahead, adaptive cruise control accelerates
back up to the stored speed.
Which functions can be controlled?
When you switch adaptive cruise contro l on,
you can set the current speed as the "control speed"
¢ page 92, Switching on and off.
When driving, you can stop cruise control
¢
page 94 or change the speed ¢ page 93
at any time.
You can also set the distance to the object
ahead and set the adaptive cruise control driv­ ing program
¢page 94.
Switching on and off
Applies to vehicles: with A udi adapt ive cruise contro l
Fig. 107 Selector lever : switc hing on/off
Fig. 108 Instrumen t cluster: Audi adaptive cruise con ­
tro l
You can set any speed between 20 mph and
95 mph (30 and 150 km/h).
Indicator lamps and messages in the instru­
ment cluster disp lay inform you about the cur­
rent system status and settings.
Switching Audi adaptive cruise control on
.,. Pull the lever towa rd you into position@
¢
fig. 107. 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 ¢
page 11, fig. 4. The set speed is .,..

96 Audi adaptive cruise control and braking guard
Audi braking guard
Descript ion
Applies to vehicles: with Audi adaptive cru ise control
Fig . 11 3 Instrumen t cl uste r: approach warn ing
Braking guard uses a radar sensor. It also
functions within the limits of the system
when adaptive cruise cont ro l is switched off .
What can Audi braking guard do? When detected i n time, the system ca n assess
situations when a vehicle ahead brakes sud­
denly or if your own veh icle is traveling at a
hi gh speed and approachi ng a ve hicle up
a head that is moving more slowly . Brak ing
guard does not react if i t can not detect the
situation.
The system advises you of various situations :
- The distance warning is given if you are too
close to t he vehicle ahead for a long time . If
the vehicle ahead b rakes sharply, you w ill
not be ab le to avoid a c oll is io n. The indicator
li ght . i n the disp lay comes o n.
- The approach warning is given when a de ­
tected vehicle up ahead in your lane is mov­ i ng much more slowly tha n you are or if it
brakes sha rply . W hen th is w arning is given,
i t may only b e possib le to avoid a collision
b y swerving or braking s harply . Th e in dicator
l igh t. and indic ator in the di sp la y w ill
warn you about the danger
i:> fig . 113. Yo u
will a lso hear a n acoustic signa l.
I f yo u do not reac t fas t enoug h or do not reac t
a t all to the situ ation , Br aking gu ard will i n-
ll This is not ava ilable in some co untri es .
tervene by b rak ing and the message braking
guard intervention will appea r.
- If a coll is ion is imm inent, the sys tem wi ll
fi rst provi de an acute warning by br iefly an d
sharply a pplying the brakes.
- If you do not re act to the acu te w arn ing,
bra king g uard can brake w it hi n the lim its of
the system . T his red uces the vehicle speed
in the event of a collision .
- At speeds un der 20 m ph (3 0 km/h), t he sys ­
tem can initiate a comp lete deceleration
short ly before a co llision
ll .
- If the bra king g uard senses that yo u are not
bra king hard enough w hen a co llision is im ­
m inent, it can inc rease the brak ing force.
Which functions can be controlled?
You can swi tch braki ng gu ard and t he dis­
tance/ap proa ch warn ing on or off in the rad io
o r MM I
r:!;>page 97, Settings in the radio/
MMI.
A WARNING
-Lack of attention can cause collisions, oth­
er accidents and serio us pe rsonal injuries.
The braking gua rd is an assist system and
ca nnot preve nt a collision by itself. The
dr ive r must alway s intervene. Th e dr ive r is
al ways res po nsib le fo r braking a t the co r­
r e ct ti me.
- Always pay clos e attent io n t o traffic,
eve n when the br aking gu ard is swi tched
o n . B e rea dy t o int erve ne and be re ad y to
t ake com plete control w he never nece ssa­
ry. Always keep the safe and legal dis ­
tance between your ve hicle an d veh icles
up ahead.
- Braking gua rd wo rks within limits and
will not res po nd outside the system lim­
its, for examp le w hen approachi ng a
sto pped veh icle o r stationary o bstacle
(end of a traffic jam or ve hicle that has
b roken dow n in t ra ffi c).

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Audi adaptive cru ise control and brakin g guar d 97
-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 includ ing crash barr i­
ers or tunnel ent ran ces may impair the
function of the radar sensor.
- You can cance l the braking that is initiat­
ed by the system by braking yourself, by
accelerating noticeab ly or by swerving.
- Bra king guard error messages
<> page 97.
-Keep in mind that braking guard can
brake u nexpectedly . Always secure any
ca rgo or objects that you are transport­
i ng to reduce the risk of d amage or in ­
ju ry.
Settings in the radio/MM!
Applies to vehicles: with Audi adaptive cruise co ntrol
~ Se lect: ICARI f u nction button> Car system s*
control button > Dri ver assist > Audi brak­
ing guard .
Or
~ Select : I CARI funct ion button > A udi braking
guard .
System -
Switch Audi braking g uard On and
Off . When you switch the ignition on, the
message
Aud i braking guard off appears if
the system is sw itched off .
Early warning -The distance and app roac h
warn ings in the display can be switched
On /
Off .
(D Tips
-Your settings are automatica lly stored
and ass igned to the remote control key
being used at the t imes the settings are
made. -
If you restrict or sw itch off the ESC, the
braking gua rd also switches itself off
<> page 173.
-Switch braking guard off when you a re
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
App lies to vehicles : wit h Audi ada ptive c ruise contro l
Braking guard : Off
This driver message appears if the system is
turned off via the radio/MMI *. Otherwise, if
the system is turned off, the informat ion ap ­
pears every t ime shortly after the start of the
trip.
The driver message a lso appears if the system
is not ava ilable d ue to a malfunct ion or if the
ESC is not switched
on <> page 173. If this is
the case, the system w ill not prov ide warnings
about a poss ible collision.
Braking guard : Acti vated
T h is dr iver message appears if sharp b rake
pressure was applied due to an acute warning.
•••
Three white dots appear if a sett ing cannot be
selected w ith the operating lever . For exam­
ple, this happens if you want to raise/lower
the speed even thoug h there was no previous ­
l y saved speed.
ACC: S ensor blo cked
This message appears if the sensor v iew is ob­
structed, for examp le by leaves, snow, heavy
spray or d irt. Clean the sensor<>
page 90,
fig. 103 .
ACC: not a vailable
The driver message appears if there is a mal ­
functio n. The adaptive cruise contro l tu rns off .
A chime sounds as a reminder . Have the sys­
tem checked by an authori zed Aud i dea ler or
authorized Aud i Service Fac ility.
ACC: unavailable ll-

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Audi side assist Lane change assistant
Description
Applies to vehicles: with Audi side assist
Fig. 114 Sensor dete ction ra n ge
Fig. 115 Disp la y on the exterio r mirro r
Side assist he lps you mon itor your blind spot
and traffic behind you r veh icle. With in the
limits of the system, it warns you about
vehicles that are coming closer or that are
traveling w ith you within sensor range
(D
c::, fig . 114 : if a lane change is class ified as crit­
ical, the display@ in the exterior mirror
c::>
fig. 115 turns on.
The display in the left exterior mirror provides
assistance when making a lane change to the
le ft, while the display in the right exterior mir­
r or provides assistance when making a lane
change to the right.
Information stage
As long as you do not activate the turn signal,
side assist
informs you about vehicles that are
detected and classified as crit ical. The display
in the respective mirror turns on, but is d im.
Audi side assist 99
The display remains dim intentionally in the
information stage so that your view toward
the front is not disturbed .
Warning stage
If you activate the turn signal, side assist
warns you about vehicles that are detected
and classified as critical. The display in the re ­
spective mirror blinks brightly . If this hap­
pens, check traff ic by glanc ing in the rearview
mirror and over your shoulder
c::> A in General
information on page 100 .
@ Tips
-You can adjust the brightness of the dis­
play @c::>
page 101.
General information
Applies to vehicles: with A ud i side ass ist
®
®
©
Fig. 116 D riving s it u atio ns
Fig . 117 Rea r of th e ve hicl e: pos it io n of the senso rs

100 Audi side assist
Side assist functions at speeds above approxi­
mately 19 mph (30 km/h).
@ Vehicles that are approaching
In certain cases, a vehicle will be classified as
cr itica l for a lane change even if it is still
somewhat far away . The faster a vehicle ap­
proaches, the sooner the display in the exteri ­
or mirror will turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior m irror if they are classified as critica l
for a lane change. All vehicles detected by
side assist are indicated by the time they en­
ter your "blind spot", at the latest.
© Vehicles left behind
If you slowly pass a vehicle that side assist has
detected (the difference in speed between the
vehicle and your vehicle is less than 9 mph
(15 km/h)), the disp lay in the exterior mirror
turns on as soon as the vehicle enters your blind spot.
The display will not turn on if you quickly pass
a vehicle that side assist has detected (the dif­
ference in speed between the vehicle and your
vehicle is greater than 9 mph (15 km/h)).
Functional limitations
The radar sensors are designed to de tect the
l eft and right adjacent lanes when the road
lanes are the normal width. In certain situa­
tions, the display in the exterior mirror may
turn on even though there is no vehicle locat­
ed in the area that is critical for a lane change.
For 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 your
current lane.
- if you are driving through a curve. Side assist
may react to a veh icle that is one lane over
from the adjacent lane.
- if side assist reacts to other objects (such as
high or displaced guard ra ils). -
In poor weather conditions . The side assist
functions are limited.
Do not cover the rada r sensors
~ fig. 117 with
stickers, deposits, bicycle wheels or other ob­
jects, because this will affect the function . For
information on cleaning, refer to ¢
page 184.
A WARNING
-
-Always pay attention to traffic and to the
area around your vehicle. Side assist can­
not replace a driver's attention. The driv­
er alone is always responsible for lane
changes and similar dr iving maneuvers .
- Improper reliance on the side assist sys­
tem can cause coll is 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 vehicles un­
der all conditions- danger of accident!
- Please note that side assist indicates
there are approaching vehicles, or
vehicles in your blind spot, only after
your vehicle has reached a driving speed
of at least 19 mph (30 km/h).
- In certain sit uations, the system may not
function or its function may be limited.
For example:
- if vehicles are approach ing or being left
behind ve ry quickly. The d isp lay may
not turn on in time.
- in poor weather conditions such as
heavy rain, snow or heavy mist.
- on very wide lanes, in tight curves or if
there is a rise in the road surface.
Vehicles in the adjacent lane may not
be detected because they are outside
of the sensor range .
([) Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
u nderbody. This can affect the system. .,..

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Have your authorized Audi dealer or au­
thorized Audi Service Facility check their
function.
@ Tips
- If the window glass in the driver's door
or front passenger's door has been tint­
ed, the display in the exterior mirror may be misinterpreted .
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions
¢ page 267.
Activating and deactivating
Applies to vehicles: with Audi side assist
Fig. 118 Drive r's d oor : Sid e ass ist bu tton
.. Press the button ¢.&. in General informa­
tion on page 100
to switch the system on/
off . The LED in the button turns on when
side assist is switched on.
Adjusting the display brightness
Applies to vehicles: with Audi side assist
The signal brightness can be set in the radio
orMMI* .
.. Select : ICARI function button> Audi side as­
sist.
.. Select : I CARI function button > Car systems*
control button > Driver assist > Audi side
assist.
The display brightness adjusts automatically
to the brightness of the surroundings, both in
the information and in the warning stage. In
very dark or very bright surroundings, the dis­ play is already set to the minimum or maxi ­
mum level by the automatic adjustment. In
Audi side assist 101
such cases, you may notice no change when
adjusting the br ightness, or the change may
only be noticeable once the surroundings
change.
Adjust the brightness to a level where the dis­
play in the information stage will not disrupt
your view forward. If you change the bright­
ness, the display in the exterior mirror will
briefly show the brightness level in the infor­
mation stage. The brightness of the warning
stage is linked to the brightness in the infor­
mation stage and is adjusted along with the
information stage adjustment.
(D Tips
- Side assist is not active while you are
making the adjustment.
- Your settings are automatically stored
and assigned to the remote control key
being used.
Driver messages
Applies to vehicles: wit h Aud i side ass ist
If side assist switches off by itself, the LED in
the button turns off and a message will ap­
pear in the instrument cluster display:
Audi side assist unavailable: Sensors blocked
The radar sensors' vision is affected . Do not
cover the area in front of the sensors with bike
wheels, stickers, dirt or other objects. Clean
the area in front of the sensors, if necessary
¢ page 99, fig. 117 .
Audi side assist: Currently unavailable
Side assist cannot be switched on temporarily
because there is a malfunction (for example,
the battery charge level may be too low) .
Audi side assist: System fault!
The system cannot guarantee that it will de­
tect vehicles correctly and it is switched off.
The sensors have been displaced or are faulty.
Have the system checked by an authorized
Audi dealer or authorized Audi Service Facility
soon.