
M N <( I.J "". rl I.O
"' N I.O rl
Audi adapt ive crui se cont rol and bra king gu ard
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 vehi cle speed and helping to
maintain a set distance to the vehicle ahead,
within the limits of the system.
If the system de
tects a moving vehicle up ahead, adaptive cruise
control can brake and then accelerate your vehi
cle. This helps to make driving 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 maneu
vers¢
page 91.
Adaptive cruise control and braking guard have
technica l limitations that you m ust know, so
p lease read this section carefu lly, understand
how the system works and use them properly at
all times.
General information
General information
Applies to vehicles: with Audi adaptive cruise control
Fig. 89 Front of th e veh icle: sensors and video camera
The areas that contain the radar and ultrason ic
sensors and the video camera ¢
fig. 89 must nev
e r be covered by stickers or other objects or ob
structed with dirt, insects, snow or ice that will
interfere with the adaptive cruise contro l system
and braking guard . For information on cleaning, refer to
¢
page 205. The same applies for any
modif ications made in the front area.
T he function of the adaptive cru ise contro l sys
tem and braking guard is limited unde r some
conditions:
- Objects can only be de tected when they are
w ith in sensor range
¢page 87, fig. 92.
- The system has a limited ability to detect ob
jec ts that are a shor t distance ahead, off to the
side of yo ur vehicle or mov ing into your lane .
- Some kinds of veh icles are hard to detect; for
examp le motorcycles, vehicles with high
ground clear ance or overhanging loads may be
detected when it is too late o r they may not be
detected at all.
-When driving through curves
¢page 86 .
- Stat iona ry objec ts ¢ page 86.
_& WARNING
Always pay a ttent ion to traffic when adap tive
cr uise control is switched on and braking
guard is active. As the driver, you are sti ll re
sponsib le for starting and for maintaining
speed and distance to other objects. Braking
guard is used to assist you. The driver must
a lways take action to avo id a col lision . The
d river is always responsible for brak ing at the
correct t ime.
- Improper use of adaptive cruise control can cause collisions, other accidents and serious
pe rsonal inj ury.
- Never let the comfort and conve nience that
adapt ive cr uise control and b rak ing guard
offer distrac t you from the need to be alert
to traffic condit io ns and the need to remain
in full control of your veh icle at all times,
- Always remember tha t the adaptive cruise
con trol and bra king guard have limits -they
will no t slow the vehicle down or maintain
the set distance when you dr ive towards an
obstacle or something on or near the road
that is not moving, s uch as vehicles stopped
in a traffic jam, a stalled or disabled vehicle.
If registered by the radar sensors, vehicles
or obstacles that a re not moving can trigger
a collision wa rning and if confirmed by the
video came ra, an acute collision warning.
~
85

Audi adapt ive cru ise control and brak ing gu ard
• You must also press the brake pedal when the
vehicl e is stopped .
Switch ing adaptiv e cruis e co ntrol off
• Push the lever away from you into position @
unt il it clicks into place. T he message ACC off
appears.
@ Indicator light s
• • Adaptive cruise control is switched o n. No
vehicles are detected up ahead . The stored speed
is mainta ined .
• • A moving vehicle i s detected up ahe ad . T he
adapt ive cru ise control system regulates the
speed and distance to the moving vehicle ahead
and accelerates/brakes automatically.
( - )·Adaptive cruise contro l is switched on . A
mov ing vehicle up ahead was detected. Your veh i
cle remains stopped .
• • When automa tic braking is not able to keep
enough d istance to a prev iously detected moving
veh icle up ahead, you must take control and
brake
~ page 90, Prompt for driver interven
tion .
© Displa y
If adap tive cr uise control i s no t shown in the dis·
play, you can call it up with the multifunction
steer ing wheel buttons
~ page 23 .
Based on the symbols in the d is play, you can de·
termine if the system is ma inta ining a di stance to
the vehicle ahead and what that di stance is .
No v ehicl e· No vehicle ahead was dete cted.
W hite vehicle · A vehicle ahead was detected .
Red veh icle· Prompt for the driver to take action
c::>page 90.
Both arrows on the sc ale © indicate the distance
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 is
tance . For information on chang ing the stored
d istance, refer to
c::> page 89 . If the distance se-
88
lected is too close or may soon becom e too close,
t h e arrows move into the red zone on the scal e.
A WARNING
Improper use of the adaptive cruise contro l
can cause collisions, other acc idents and seri
ous persona l injuries.
- Pressing the
!SET ! button when driving at
speeds be low 20 mph (30 km/h), will auto·
mat ically acce lerate the vehicle to 20 mph
(30 km/h), which is the min imum speed
that ca n be set .
@ Tips
-If you switch the ign it ion or the adaptive
cruise control off, the set speed is erased
from the system memory .
- The electronic stabilizat ion control (ESC)
and the anti -slip -regulation (ASR) are auto·
matically turned on when the adaptive
cruise contro l is turned on. Both systems
canno t be turned off if t he adaptive cruise
cont ro l is turned o n.
Changing the speed
Appl ies to vehicles: with Audi adap tive cruise control
0
f
JJ
0
Fig. 95 Oper atin g leve r: Cha nging t he s pee d
• To increase or reduce the speed in increments,
tap the lever up or down.
;;; N 9 :c .., m
• To inc rease or dec rease the speed q uic k ly, ho ld
t he lever up o r down until the red LED @ reach·
es the desi red speed
c::> page 87, fig . 94.
After each change, the new stored speed appears
briefly i n the informa tion line
c::> page 87, fig . 94
@ .

M N <( I.J "". rl I.O
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Audi adapt ive crui se cont rol and bra king gu ard
Driving in stop-and-go traffic
App lies to vehicles: with Audi adaptive cruise co ntrol
The adaptive cruise control system a lso ass ists
you in stop-and-go traff ic. If a p revious detected
veh icle ahead stops, your veh icle will brake to a
stop, within the limits of the system.
.. To resume dr iv ing with adaptive cruise co ntrol,
tap the ac celerato r pedal or
.. Pull the lever toward you into posit ion @
¢page 89, fig. 96.
@ Tips
-If adaptive cru ise contro l is active and your
vehicle does not start driving as expected
after pu lling the lever once, you can start
out again by tapping the acce lerator pedal.
- If an obstacle is detected when your vehicle starts driving, the system will prompt you
to take over ¢
page 90. Your vehicle will
drive more slowly when start ing. Th is may
also happen in some situations when no ob
stacle is apparent.
Interrupting cruise control
A ppl ies to vehicles: with Audi adaptive cruise co ntrol
Fig. 96 Selector lever
Requirement: The adaptive cruise control is
sw itched on.
Overriding c ruise control
.. To accelerate manua lly, pull the lever towa rd
yo u into position @and hold it there. The mes
sage
ACC: Ov erride appears. Or
.. press the accelerator peda l.
.. To resume cruise control, release the lever or
take you r foot off the accelerator pedal.
Cance ling crui se contro l while driving
.. Move the lever into position @. The message
ACC : Standb y appears. Or
.. press the brake pedal.
.. To resume the stored speed, move the lever in
to position @.
Cance ling crui se control when stopped
.. Push the lever away from you into posit ion @ .
The message
ACC : S ta ndb y appears.
.. To resume cru ise contro l, press the brake pedal
and pu ll the lever toward you into position @.
A WARNING
-It is dangerous to activate cruise control and
r esume the stored speed when the current
road, traffic or weather conditions do not per
mit this. Th is could result in a crash.
Setting the distance
A pp lies to vehicles: wit h Audi ada ptive c ruise contro l
Fig. 9 7 Selecto r lever : setting t he distance
.. Tap the switch to display the current set dis
tance ¢
fig. 97 .
.. To increase or reduce the d istance by incre
ments, tap the switch again to the left o r right .
The distance between the two veh icles will
change in the ins trument cluster display .
When app roach ing a mov ing vehicle up ahead,
the adaptive cruise control system automatically brakes to mat ch that obje ct's speed and then
mai ntains the s tored d istance.
If the veh icle
ahead accelerates, adaptive cru ise con trol w ill al-
so accelerate up to the stored speed .
Ill>-
89

Audi adapt ive cru ise control and brak ing gu ard
The higher the speed, the greater the distance in
yards (meters)
c::;, .,& . The Dista n ce 3 setting is
recommended.
The distances provided are specified values. De
pending on the d riving situat ion and the how the
vehicle ahead is driving, the actual distance may
be more or less than these target distances.
The various symbols for the time increments ap
pear briefly in the information line@q
page 87,
fig. 94 when you c hange the settings.
c::::,_c::::, ___ Distan ce 1 : This set ting co rresponds
to a distance o f 92 feet/28 meters when trave l
ing at 62 mph (100 km/h), or a time interval of 1
second.
c::::, __ c::::, __ Distan ce 2: T his sett ing corresponds
to a distance o f 118 feet/36 meters when travel
ing at 62 mph (100 km/h), or a time interval of
1.3 seconds.
c::::, ___ c::::,_ Distanc e 3: This setting corresponds
to a distance o f 164 feet/SO me ters when travel
ing at 62 mph (100 km/h), or a time interval of
1.8 seconds.
c::::, ____ c::::, Distanc e 4: This setting corresponds
to a distance o f 210 feet/64 me ters when travel
ing at 62 mph (100 km/h), or a time interval of
2.3 seconds.
A WARNING
Following other vehicles too closely increases
the risk of collisions and ser ious personal in
jury.
- Setting short distances to the traffic ahead
reduces the time and d istance availab le to
br ing your vehicle to a safe stop and makes
i t even more necessary to pay close atten
t ion to traffic.
- Always obey applicable traffic laws, use
good judgme nt, and select a safe following
distance for the traffic, road and weather
condit ions.
(0 Tips
- Distanc e 3 is set automatically each time
you sw itch the ignit ion on.
90
- Your standard settings are automatically
stored and assigned to the remote control
key be ing used .
Selecting the driving mode
Applies to vehicles: wit h Aud i adapt ive c ruise contro l
.,. Select the desired driving mode in drive select
c::;,page 101.
@ Tips
Your settings are automatica lly stored and as
signed to the remote control key being used.
Prompt for driver intervention
Applies to vehicles: with A udi adapt ive c ru ise contro l
Fig . 98 Instrument cluster: req uest fo r dr ive r interve ntion
In certain situations, the system will prompt you
to take action. This could happen, for example, if
braking by the adaptive cruise control system is
not enough to maintain enough distance to the
vehicle ahead .
The indicator light. and the symbol in the dis
play will warn you about the situation
c::;, fig . 98.
You w ill also hear an acoustic sig nal.
- Press the brake peda l to slow your vehicle
down.

Audi adaptive cruise control and braking guard
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise co ntrol
F ig. 99 Instrument cluster : approach warning
Braking guard uses radar sensors and a video
camera. It also functions within the lim its of the
system when adaptive cruise control is sw itched
off.
What can braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes suddenly
or if your own veh icle is traveling at a high speed
and approaching a vehicle up ahead that is mov
ing more slow ly . Braking guard does not react if it
cannot de te ct 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 avo id a collision. The indicator light.
in the d isplay comes on .
- The
approach warning is g iven when a detected
vehicle up ahead in your lane is moving much
more slowly than you are or if it brakes sharply .
When this warning is g iven, it may only be pos
sible to
avoid a co llis ion by swerving or braking
sharp ly. The indicator light. and indica tor in
the display will warn yo u about the danger
¢
fig. 99. You will also hear an acoustic signal.
If you do not react fast enough or do not react at
all to the situation, braking guard will intervene
M N by braking. <( I.J "". rl I.O
"' N <.0 ll This is not a vailable in some coun tri es. rl
- If a collision is imminent, the system wi ll first
provide an
acute warning by briefly and sharply
app ly ing the brakes.
- If you do not react to the acute warning, brak
ing guard can brake with increasing force within
the limits of the system. This reduces the vehi
cle speed in the event of a collision.
- The system can initiate maximum braking
short ly before a collision
1l . Full dece leration at
high speeds occurs only in vehicles with adap
tive cruise control and s ide ass ist (pre sense
plus).
- If the braking guard senses that you are not
braking hard enough when a collis ion is imm i
nent, it can increase the braking force .
- The pre sense functions also engage when a
collision is imm inent ¢
page 185 .
Which functions can be controlled?
You can switch braking guard and the distance/
approach warning on or off in the MMI
¢ page 92, Settings in the Infotainment sys
tem .
A WARNING
--
Lack of attention can cause collisions, other
accidents and ser ious personal injuri es. The
braking guard is an ass ist system and cannot
prevent a collision by itself. The driver must
always intervene . The driver is always respon
sib le for braking at the correct time.
- Always pay close attent ion to traffic,
even
when the braking guard is switched on . Be
ready to intervene and be ready to take com
p lete control whenever necessary. Always
keep the safe and legal distance between
your veh icle and vehicles up ahead.
- Braking guard works within limits and will
not respond outside the system limits, for
example when approaching a stopped vehi
cle or stationary obstacle (end of a traffic
jam or vehicle that has broken down in traf
fic).
-Always remember that the radar sensor for
the braking gua rd works on ly w ithin defined
liJ,,
91

Audi adaptive cru ise control and b ra king guard
detection and range limits that may prevent
the proper detect ion of other 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 detected
at all.
- Reflective surfaces includ ing crash barr iers
or tunnel entrances may impair the function
of the radar senso r.
@ Tips
- You can cance l the braking with increasing
force that is initiated by the system by brak
i ng yourself, by accelerating noticeably or by
swervrng .
- Braking guard error messages
c> page 92.
- Keep in mind that braking guard can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to reduce
the r isk of damage or injury.
Settings in the Infotainment system
Applies to vehicles: with Audi adaptive cruise control
~ Se lect : the ICARI function button > (Car )* Sys
t e m s
control button > Dr iver a ssistan ce > Audi
bra king gua rd.
S yste m -
Sw itch the braking guard On/ Off. When
you switch the ign ition on, the message
Br akin g
g uard : Off
appea rs if the system is switched off.
Pr ew arni ng -The distance and approach warn
i n gs in the display can be sw itched
On/ Off.
(D Tips
-Your settings are automat ically stored and
assigned to the remote control key being
used.
- If you restrict or switch off the ESC, the braking guard also switches itself off
c>page 189.
- Switch brak ing guard off when you are load
i ng the veh icle onto a vehicle carr ier, tra in,
sh ip or other type of transportation. This
can prevent undesired wa rnings from the
braking guard system.
92
Messages
Applies to vehicles: with Audi adaptive c ru ise control
B ra king gu ard : off
This dr iver message appears if the system is
tu rned off via the infotainment. Otherw ise, if the
system is t urned off, the information appears ev
ery time short ly after the start of the trip.
The driver message a lso appea rs if the system is
not available due to a malfunction or if the ESC is
not sw itched on
c> page 189 . If th is is the case,
the system wi ll not provide warnings about a
possible collision .
Braking guard : ac tiv ated
This dr ive r message appears if sharp brake pres
sure was applied due to an acute warn ing .
ACC : Un available !
A CC and Audi b raking gua rd: not av ailable
The system cannot detec t mov ing vehicles up
ahead correc tly and is sw itched off. The sensors
have been displaced or are not working proper ly .
T he Audi pre sense functions may a lso be affect
ed. Drive to your authorized Audi dealer or au
thorized Audi service facility immediately to have
the malfunction corrected.
A CC: currentl y unav ailable. No sen so r v ision
A CC and b rakin g g uid e: currentl y un available .
No s ensor vis ion
This message appears if the sensor v iew is ob
structed, for examp le by leaves, snow, heavy
spray or d irt . Clean the sensors
c> page 85,
fig. 89.
AC C: C urrentl y un availabl e. Gradi ent t oo ste ep
The road exceeds the max imum possible angle
for proper adapt ive cruise control operation.
Adaptive c ruise control is sw itched off .
ACC: Onl y ava ilable in D , Sor M
Select t he D/S or M selector leve r position.
ACC: curr entl y unavailable . Parking brake ap
plied

Audi active lane assist
Audi active lane assist Lane assist
Description
A pp lies to veh icles: w ith Audi active lane assist
Active lane assist detects lane marker lines with
in 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
corrective steering. You can override this steering
at any time. If you pass over a line, the steering
wheel will vibrate lightly. In order for this warn
ing vibration to occur, it must first be switched
on in the Infotainment system. Active lane assist is operable when the lane marker line is detected
on at least one side of the vehicle.
The system is designed for driving on freeways
and expanded highways and thus works only at
speeds of 40 mph (65 km/h) or more .
Applies to vehicles with side assist*: If you acti
vate a turn s ignal when active lane assist is ready
and it classifies a lane change as critical because
of vehicles traveling alongside you or approach ing you, there will be noticeable corrective steer
ing shortly before you leave the lane. This will at
tempt to keep your vehicle in the lane.
Applies to vehicles without side assist*: the sys
tem does not warn when it is ready if you activate
the turn signal before crossing the lane marker line. In this case, it assumes that you are chang
ing lanes intentionally.
Applies to vehicles with adaptive cruise control*
or parking aid*: The corrective steering is target
ed based on the driving situation. In addition to
the lane marker lines, the system can also take
into account other objects such as guard rails. If
they are detected in close proximity to the vehi
cle, active lane assist helps prevent the vehicle
from driving too close to them. There is also
passing assistance . The system does not provide
any corrective steering if it detects that you are
passing another vehicle.
94
A WARNING
-
- The system warns the driver that the vehicle
is leaving the lane using 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. Al
ways keep your hands on the steering
wheel.
- Corrective steering may not occur in certain
situations, such as during heavy braking.
- There may be cases where the camera does
not recognize all lane marker lines. Correc
tive steering can only take place on the side
of the vehicle where lane marker lines are
detected.
- Other road structures or objects could possi
bly be identified unintentionally as lane marker lines. As a result, corrective steering
may be unexpected or may not occur.
- The camera view can be restricted, for ex
ample by vehicles driving ahead or by rain,
snow, heavy spray or light shining into the
camera. This can result in active lane assist
not detecting the lane marker lines or de
tecting them incorrectly.
- Under certain conditions such as ruts in the
road, a banked roadway or crosswinds, 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 there are poor road and/
or weather conditions such as slippery roads, fog, gravel, heavy rain, snow and the
potential for hydroplaning. Using active lane
assist under these conditions may increase
the risk of a crash.

M N <( I.J "". rl I.O
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Switching on and off
Applies to vehicles: with Audi active lane assist
Fig. 100 Turn signal lever: active lane assist button
Fig. 101 Windshield: camera w indow for active lane assis t
... Press the¢ fig. 100 button to switch the sys
tem on and off. The. or. indicator light in
the instrument 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 indicator light turns on if the
system is switched on but is inoperable . This may
be due to the following reasons :
- There is no lane marker line.
- The relevant lane marker lines are not detected
(for example, markings in a construction zone
or because they are obstructed by snow, dirt,
water or backlighting).
- The vehicle's speed is below the speed needed
to activate it, which is about 40 mph (65 km/
h).
- The lane is narrower than about 8 ft. (2.5 m) or
wider than 15
ft (4.5 m).
- The curve is too sharp.
Audi active lane assist
- The driver's hands are not on the steering
wheel.
(D Tips
Make sure the camera's field of view
¢
fig. 101 is not obstructed by stickers or any
thing else. For information on cleaning, refer
to ¢ page
205.
Lane assist display in the instrument
cluster
Applies to vehicles: wit h Audi active lane ass ist
Fig. 102 Instrument cluster: active lane assist is switched
on and providing warnings
Fig. 103 Instrumen t cluster: act ive lane assist is sw itched
on but not ready to provide warn ings
You can call up the active lane assist display using
the buttons in the multifunction steering wheel
¢ page
23.
An additional indicato r appears in the Head-up
display* .
95