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Audi adapt ive crui se c ontrol an d bra kin g guard 8 7
vehicles or obstacles that are not moving
can trigger a collision warning and if con
firmed by the video camera, an acute col lis ion warn ing.
- For safety reasons, do not use adaptive
cruise control 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 itions cou ld result in a co lli
sion .
- Switch adaptive 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
celerating to the set speed when in these
situations .
- The adapt ive cru ise control system w ill
not brake by itse lf if you put your foot on
the accelerator pedal. Doing so can over ride the speed and distance regulation .
- When approaching stationary objects such as stopped traffic, adaptive cruise
control 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
ima ls, objects crossing the road o r on
coming objects .
- The function of the radar sensors can be
affected by reflective objects such as
guard ra ils, the entra nce to a tunnel,
he avy rain or i ce.
- Never follow a veh icle so closely that you
cannot stop your vehicle safe ly. The
adaptive cruise cont ro l c anno t slow or
brake the veh icle safely when you follow
another vehicle too closely. Always re
member that the automatic braking
funct ion cannot bring the veh icle to a
sudden or emergency stop under these
condit ions .
- To prevent unintended operation, always
switch ACC off when it is not be ing 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 le r or a u
thorized Audi Serv ice Facility check their
funct ion.
In curves
Applies to vehicles: with Audi adaptive cruise control
I
F ig. 8 7 Exampl e: dri vin g in to a curve
When dr iving into a curve c:> fig. 87 and out of
a cu rve, the ad aptive cruise con trol m ay react
to a vehicle in the next lane and apply the
brakes . You can override or prevent the brak
i ng by pressing the accelerator pedal b riefly.
Stationary objects
Applies to vehicles: with Audi adaptive cruise control
Fig. 88 Ex ampl e: object chang ing l anes and s ta tio nar y
objec t
The adaptive cru ise con tro l system only reacts
to objects that a re mov ing o r th at the system
has a lready detected as moving . For examp le,
if a veh icle @, which has a lready been detect-
ed by the adaptive c ruise contro l, tu rns o r
changes lane s and another stationary vehicle .,._
Page 90 of 310

88 Audi adaptive cruise control and braking guard
@ is located in front of that vehicle, the sys
tem will not react to the stationary vehicle.
Audi adaptive cruise control
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 89 Detection range
What can adaptive cruise control do?
The adaptive cruise control system uses video,
radar and ultrasou nd. Moving vehicles ahead
can be recognized up to about 650 feet (200 m) away.
On open roads w ith no traffic, adaptive cruise
control works like a regular cruise control sys
tem. The stored speed is maintained. When
approaching a moving vehicle detected up
ahead, the adaptive cruise control system au
tomatically s lows down to match that vehi
cle's speed and then maintains the distance
that the driver previous ly stored. As soon as
the system does not detect a vehicle up
ahead, adaptive cruise control accelerates
back up to the stored speed.
In stop-and-go traffic, adapt ive cru ise control
can brake until the vehicle stops and acceler
ate again under certain conditions and if this
is possible within the system's limits and ca
pabilities¢
page 90. Adaptive cru ise control
will not make an emergency stop .
Which functions can be controlled?
When you switch adaptive cruise contro l on,
you can set the current speed as the "control
speed" ¢
page 88, Switching on and off.
When driving, you can stop cruise control
¢
poge 90 or change the speed ¢ page 89
at any time.
You can also set the distance to the object
ahead and set the adaptive cruise control driv
ing program ¢
page 90.
Switching on and off
Applies to vehicles: with Audi adaptive cruise control
Fig. 90 Se lector lever: switching on/off
Fig. 91 Instrument cluste r: adaptive cruise control
You can set any speed between 20 mph and
95 mp h (30 and 150 km/h).
Ind icator lamps and messages in the instru
ment cluster d isplay inform you about the cur
rent system status and settings.
An additional indicator appears in the Head
up D isplay*.
Switching adaptive cruise control on
.,. Pull the lever toward you into position (D
¢ fig. 90 . ACC standby appears in the in
strument cluster display.
Setting the speed and activating
regulation
.,. To set the current speed, press the ISETI
button ¢ fig. 90. The set speed is shown in 1111-
Page 91 of 310

Audi adaptive cruise control and braking guard 89
the tachometer @and is also shown briefly
in the display @¢
fig. 91 .
.. You must also press the brake peda l when
the vehicle is stopped.
Switching adaptive cruise control off
.. Push the lever away from you into position
@ until it clicks into place. The message
ACC off appears.
@ Indicator lights
ra 1 -Adaptive cruise control is switched on. No
vehicles are detected up ahead . The stored
speed is ma intained.
I -A moving vehicle is detected up ahead .
The adaptive cruise control system regulates
the speed and distance to the moving vehicle
ahead and acce lerates/brakes automatical ly.
fa) -Adaptive cruise control is switched on. A
moving vehicle up ahead was detected. Your
ve hicl e remains stopped.
I -When automat ic braking is not able to
keep enough distance to a previously detected
moving vehicle up ahead, you must take con
trol and brake¢
page 91, Prompt for driver
intervention.
© Display
If adaptive cruise control is not shown in the
disp lay, you can call it up with the multifunc
tion steering wheel buttons ¢
page 23.
Based on the symbols in the d isplay, you can
determine if the system is maintaining a dis
tance to the vehicle ahead and what that d is
tance is.
No vehicle -No veh icle ahead was detected .
White vehicle -A vehicle ahead was detected.
Red vehicle -Prompt for the driver to take ac
tion ¢
page 91.
Both arrow s 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
distance. For information on changing the
stored distance, refer to ¢
page 90 . If the
distance selected is too close or may soon be
come too close, the arrows move into the red
zone 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 driv ing at
speeds below
20 mph (30 km/h), will 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 Electronic Stabili
zation Control (ESC) to the SPORT mode
when adaptive cruise control is switched
on.
Changing the speed
Applies to vehicles: with Aud i adapt ive crui se control
0
f
• 0
Fig. 92 Selector lever: changing the speed
.. To increase o r reduce the speed in incre
ments,
tap the lever up or down.
-0:, N 0 ± ... a)
.. To incr ease o r reduce the speed quickly,
hold the lever up or down until the red LED
@ reaches the desired speed
¢fig. 91.
Following any changes, the new stored speed
will be displayed briefly in the display @
¢fig. 91.
Page 92 of 310

90 Audi adaptive cruise control and braking guard
Driv ing in stop-and-go traff ic
App lies to vehicles: with Audi adaptive cruise control
The adaptive cruise co ntro l system a lso as
sis ts you in stop- and -go traff ic. If a previo us
detec ted veh icle ahead s tops, yo ur vehicle will
brake to a stop, within the limits o f the sys
tem .
,,. To resume driv ing wi th adap tive cruise con
t ro l, tap the accelerator pe dal or
,,. Pu ll the lever toward yo u in to posit ion @
¢fig. 93.
@ Tips
-If ada ptive cruise con trol is a ctive an d
you r vehicle does not start driving as ex
pected after pulling the lever once, you
can start out aga in by tapp ing the accel
erato r pedal.
- If an obstacle is detected when yo ur ve
h icle starts dr iv ing, the system w ill
prompt you to take over
¢ page 91.
Your veh icle w ill drive more s low ly when
star ting . This may a lso happe n in some
s ituation s whe n no obstacle is apparent .
Interrupting cruise control
Applies to vehicles: with Audi adaptive cruise control
Fig. 9 3 Se lecto r leve l
Requ irement : adaptive cruise control must be
sw itched on.
Overriding crui se control
,,. To accelerate ma nually, pull the lever to
ward you into position @and hold it there .
The message
ACC override appears . Or
,,. press the accelerato r peda l. ,,.
To res ume cruise cont ro l, re lease the lever
or take your foot off the accelerato r pedal.
Canceling cruise control while driving
,,. Move the lever in to posi tion @. The mes
s a ge
ACC standby ap pears. Or
,,. press t he br ake pedal.
,,. To res ume the stored spee d, move the lever
into position @.
Canceling cruise control when stopped
,,. Push the leve r away from yo u into pos it io n
@ . Th e message
ACC standby appe ars.
,,. To res ume cruise cont ro l, press the brake
pedal an d pull th e lever toward you into po
sition @.
A WARNING
• -
Never resume the stored speed if the
sp eed is too high for p revailing r oad, traf
f ic or weat her condit io ns .
Setting the distance
Applies to vehicles: with Aud i adapt ive cru ise contro l
Fig. 94 Se lecto r lever : setting t he distance
,,. Tap the switch to display the current set dis
tance
¢ fig. 9 4.
,,. To increase or reduce the d istance by incre
ments, tap the switch again to the left or
r ight. The d istance between the two vehicles
w ill change in the instrument cluste r dis
p lay .
When approac hing a mov ing vehicle up ahead,
the adaptive cruise control system automati
ca lly brakes to match th at object's speed and
Ill>
Page 93 of 310

Audi adaptive cruise control and braking guard 91
then maintains the stored distance. If the ve
hicle ahead accelerates , adaptiv e cr uis e con
trol will also accelerate up to the stored
speed.
The higher the speed, the greater the distance
in yards (meters)
Q .&. . The Distance 3 setting
is recommended .
The distances prov ided are spec ified values.
Depending on the driving situation and the
how the vehicle ahead is driving, the actual
d istance may be more or less than these tar
ge t distances.
The various symbols for the time increments
appear briefly in the information line @
¢ fig. 91 when you change the settings.
~-~ --- 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 .
~-- ~-- Distan ce 2: This setting corre
sponds to a distance of 118 feet/36 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1.3 seconds .
~--- ~-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 interval of 1.8 seconds .
~---- ~ 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 co llisions 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 .
@ 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
trol key being used.
Selecting the driving mode
Applies to vehicles : wit h Audi adapt ive cr uise contro l
.,. Select the desired driving mode in drive se
lect
¢ page 102 .
@ Tips
Your settings are automatically stored and
assigned to the remote control key being
used.
Prompt for driver intervention
Applies to vehicles: with A ud i ada ptive cr uise contro l
Fig. 95 Ins trumen t cluster: req ues t fo r drive r inte rven
t io n
In certain situations, the system will prompt
you 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 vehicle ahead .
T he ind icator light
I and the symbol in the
display will warn you about the s ituation
¢ fig. 95. You w ill also hea r an acoustic signal.
- Press the brake pedal to slow your vehicle
down.
Page 94 of 310

92 Audi adaptive cruise control and braking guard
Audi braking guard
Descript ion
App lies to vehicles: with Audi adap tive cruise control
Fig. 96 Instrument cluster: approach warn ing
Braking guard uses radar sensors and a video
camera . It also functions within the limits of
the system when 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 your own vehicle is traveling at a
high speed and approaching a vehicle up
ahead that is moving more slowly . 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 collision . The indicator
light
I in the display comes on .
- The
approach warning is given when a de
tected veh icle 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. Th e indicator
light
I and indicato r in the display will warn
you about the danger¢
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, braking guard will inter-
ll This is not ava ilable in some co un tri es .
vene by braking and the message braking
guard intervention
wi ll appear.
- If a coll is ion is imm inent, the system wi ll
fi rst prov ide 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 maximum braking
short ly before a co llision
1l . Full deceleration
at high speeds occurs only in vehicles with
adaptive cruise control and side assist (pre
sense plus) .
- If the braking guard senses that you are not
braking hard enough when a collision is im
m inent, it can increase the braking force .
- The pre sense functions also engage when a
collision is imminent¢
page 194.
Which function s can be controlled?
You can switch braking guard and the dis
tance/approach warning on or off in the MMI
i=> page 93, Settings in the MMI.
A WARNING
-
Lack of attention can cause collisions, oth-
er accidents and serious personal injuries.
The braking guard is an assist system and
cannot prevent a collision by itself . The
driver must always intervene. The dr iver is
a lways respons ible for braking at the cor
rect time.
- Always pay close attention to traffic,
even when the braking guard is switched
on. Be ready to intervene and be ready to
take complete control whenever necessa
ry. Always keep the safe and legal dis
tance between your veh icle and vehicles
up ahead.
- Braking guard works within limits and
will not respond outside the system lim
its, for example when approaching a
stopped vehicle or stationary obstacle ..,.
Page 95 of 310

Audi adaptive cru ise control and brakin g guar d 93
(end of a traffic jam or veh icle t hat has
br oken down in traffic).
- Alw ays remember that the radar sensor
for the b raking guard works only within
defined detection and ra nge limits that
may prev ent the proper det ection of oth
er ve hicles.
- The ra dar 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 rances may impair the
function of the radar sensor.
(0 Tips
- You can cance l the braking w ith increas
i ng fo rce that is initiated by the system
by braking yo urself, by accelerating no
ticeab ly or by swerving.
- Brak ing guard error messages
<=> page 93.
-Keep in mind that braking guard can
brake unexpectedly. Always secure any
ca rgo or objec ts that you are transport
i ng to reduce t he risk of d amage o r in
Ju ry.
Settings in the MMI
Appl ies to vehicles: with Audi adaptive cruise co ntrol
~ Se lect: ICARlf unct ion button> ( Car )* sys
tems
contro l button > D river assi st > Audi
braking guard .
System -
Switch braking g ua rd On and Off .
When you sw itch the ignition on, the message
Audi braking guard off appears if the system
is switched off.
Early warning -The distance and approac h
warn ings in the display can be switched
On /
Off .
(D Tips
- Your settings are automatically stored
and assigned to the remote control key being used at the time the settings
are
ma de.
- If you switch the ES C to spo rt mode,
braking g uard switches off a utomatica lly
<=>page 198.
- Switch braking guard off when you a re
loading the vehicle onto a vehicle carrier,
t rain, ship o r other type of transporta
t ion. 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
ACC unavail able
ACC and braking guard: unavailable
T he system cannot detect mov ing vehicles up
ahead co rrec tly and is switched off. The sen
sors have been displaced or a re not worki ng
properly . The Audi pre sense func tions may a l
so be affected. Drive to yo ur autho rized Audi
dealer or authorized A udi se rvice facility im
med iate ly 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
Th is message appears if the senso r view is ob
structed, for examp le by leaves, snow, heavy
sp ray or d irt. C lean the sensors<=>
fig. 86 .
ACC: unava ilabl e at this time . Inclin e too
steep
The road exceeds the max imum possible an
gle for proper adaptive cru ise control opera
tion. Adaptive cru ise con tro l is switched off .
ACC: only selector lever positions D , S or M
available
Se lect t he D/S or M selector leve r pos ition.
ACC: unavailabl e at this time . Parking brake
s et
The adaptive cr uise cont rol system switches
off automatically if the park ing b rake is set. ..,.
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94 Audi adaptive cruise control and bra king guard
ACC : Currently unavailable . Stabilizat ion
cont rol (ESC ) input .
This me ssage appears if the Ele ct ron ic St abili
z at ion Con trol (E SC) is wo rking to help st abi
li ze the vehicle. In this case, adaptive cruise
contro l sw itches
off automatically.
ACC : Please take over
This message appea rs whe n adapt ive cr uise
con trol can not set t he parki ng b ra ke . Press
the b ra ke peda l to preve nt the vehicle from
r olling .
•••
Three w hite dots appear if a setting cannot be
se lected with the se lector lever. Fo r example,
this happens if adapt ive cr uise control can not
r es ume dr iv ing in stop-and-go traff ic because
one of t he conditions required fo r ACC to wor k
i s not p resent.
Door open
The adaptive c ruise co ntro l system ca nnot
switch on when a d oor is open.
Stationary object ahead
This message appea rs if you wou ld li ke to
sw it ch a dapti ve cr uise con trol o n and there is
a sta ti onar y veh icle o r obstacl e direc tly ahe ad
of yo ur vehicle .