Audi adaptive cruise control and braking guard 107
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 . Th is 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 113.
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. 113 Front of the vehicle: Position of radar sensor
The area that contains the radar sensor
c::;, fig. 113 must never be covered by stickers
or other objects or obstructed with dirt, in
sects, snow or ice that will interfere with the
adaptive cruise control system and braking
guard. For information on cleaning, refer to
c::;, page 217. The same applies for any modifi
cations made in the front area . The
function of the adaptive cruise control
system and braking guard is limited under
some cond itions:
- Objects can only be detected when they are
within sensor range
.:!>page 109 , fig. 116.
-The system has a limited ability to detect
objects that are a short distance 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 108.
-Stationary objects c::;, page 108.
A WARNING
-Always pay attention to traffic when adap-
tive cruise control is switched on and brak ing guard is active. As the dr iver, you are
still respons ible for start ing 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 collision. The driver is always responsible
for braking at the correct time.
- Improper use of adaptive cruise control
can caus e collisions, other accidents and
serious personal inj ury .
- Never let the comfort and convenience
that adap tive cruise control and braking
guard offer d istract you from the need to
be alert to traffic conditions and the
need to remain in fullcontrolofyourve
hicle at all times,
- Always remember that the adaptive
cru ise contro l and braking guard have
limits -they will not slow 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
moving, such as vehicles stopped in a
traffic jam, a stalled or disabled vehicle.
If registered by the radar sensor, vehicles
or obstacles that are not moving can
trigger a collision warning and if .,.
108 Audi adaptive cruise control and braking guard
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 could result in a colli
sion.
- Switch adaptive cruise control off tempo
rar ily when driv ing in turning lanes, on
expressway exits or in construc tion
zones. This prevents the vehicle from ac
celerating to the set speed when in these
situations.
- Th e adaptive cruise 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 adaptive cr uise 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 vehicle so closely that you cannot stop your vehicle safely. The
adaptive cruise control cannot slow or
brake the vehicle safely when you follow
ano ther vehicle too closely . Always re
member that the automatic braking
function cannot bring the vehicle to a sudden or emergency stop under these
conditions.
- To prevent unintended operation, always
switch adaptive cruise control off when it
is not being used.
QJ Note
The sensor can be disp laced by impacts o r
damage to the bumper, whee l housing and underbody.
That could affect the adaptive
cruise control system and braking guard. Have yo ur authorized Aud i dea ler or a u
thorized Audi Service Facility check their
function.
In curves
Applies to vehicles: with Audi adaptive cruise contro l
Fig. 114 Examp le: driv ing into a curve
When driving into a curve¢ fig. 114 and out
of a curve, the adaptive cruise control 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: with Aud i adapt ive cru ise contro l
Fig. 115 Example: object changing lanes and station
a ry object
T he adaptive cru ise control system only reacts
to objects that are moving or that the system
has a lready detected as moving. For examp le,
if a vehi cle@ , which has al ready been detect
ed by the adaptive cruise control, turns or
changes lanes and another stationary vehicle
® is located in front of that vehicle, the sys
tem will not react to the stat ionary veh icle.
Audi adaptive cruise control and braking guard 109
Audi adaptive cruise
control
Description
A pp lies to vehicles: with Audi adaptive cruise control
Fig. 116 Detect ion range
What can adaptive cruise control do?
The adaptive cruise control works in conjunc
tion with a radar sensor installed in the front
of the vehicle
¢page 107, fig. 113, which is
subject to designated system limits
¢page 109. Stationary objects are disregard
ed .
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 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 control on,
you can set the current speed as the "control speed" ¢
page 109, Switching on and off.
When driving, you can stop cruise control
¢
page 111 or change the speed ¢ page 11 0
at any time.
You can also set the distance to the object
ahead and set the adaptive cruise control driv ing program
¢ page 111.
Switching on and off
Applies to vehicles: wi th Aud i adap tive crui se contro l
Fig. 117 Selector lever: switch ing on/off
Fig. 118 Instrument cluster: adapt ive c ruise control
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 display inform you about the cur
rent system status and settings.
Switching adaptive cruise control on
.,. Pull the lever toward you into position (I)
¢fig. 117 . 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 ¢
fig. 117. The set speed is shown in the
tachometer @and is a lso shown briefly in
the display @¢fig.118.
Switching adaptive cruise control off
.,. Push the lever away from you into position
@ until it clicks into place. The message
ACC: Off appears. ..,.
Audi adaptive cruise control and braking guard 113
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 123 Instrument cluste r: approac h warn ing
Braking guard uses a radar sensor. It also
functions within the limits of the system
when adaptive 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 . Braking
gua rd 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 wi ll
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 vehicle up ahead in your lane is mov
ing 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. The indicator
light
I and indicator in the display will warn
you about the danger
c:> fig. 123. You will al
so 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 Th is is not ava ilable in som e coun tri es.
vene by braking and the message Braking
guard: Activated
will appear.
- If a coll ision is imminent , the system will
first provide an
acute warning by briefly and
sharply applying the brakes.
- If you do not react to the acute warning,
braking guard can brake within the limits of
the system. This reduces the vehicle speed
in the event of a collision.
- At speeds under 20 mph (30 km/h), the sys
tem can initiate a complete deceleration shortly before a collision
ll.
- If the braking guard senses that you are not
braking hard enough when a collision is im
minent, it can increase the braking force .
Which functions can be controlled?
You can switch braking guard and the dis
tance/approach warning on or off in the radio/
MMI* i::!> page 114, Settings in the radio/
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 driver is
always respons ible for braking at the cor
r ect time .
- Always pay close attention to traffic,
even when the braking guard is switched
on . Be ready to intervene and be ready to
take comp lete control whenever necessa
ry. Always keep the safe and legal dis
tance between your vehicle and vehicles
up ahead.
- Braking guard works within limits and
will not respond outside the system lim
its, for examp le when approaching a
stopped vehicle or stationary obstacle (end of a traffic jam or vehicle that has
broken down in traff ic).
114 Audi adaptive cruise control and bra king guard
- Always remember t hat t he radar sens or
fo r the b raking guard wo rks only within
defined detection and range limits that
may preve nt the proper detection of oth
er v eh icles.
- The radar senso r's fu nction and range
can be reduced by rain, s now a nd heavy
spray. Mo ving v ehicle s up a head may not
b e pr omptly dete cte d or may not be de
te cte d at al l.
- Reflective surfaces in cl udi ng c ras h ba rri
ers or t unnel ent ran ces may impair the
f unc tion of the r ad ar se nso r.
(D Tips
- You can cance l th e braking tha t is initiat
ed by the system by braking you rs e lf, by
a cce lerati ng noticeab ly o r by swerving.
- Bra king guard er ror messages
¢pag e
114.
- Keep in mi nd that braking gua rd can
brake u nexpect edly . Always secure any
ca rgo or objects that you are tr ansport
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 control
• Se lect : ICAR !f u nct ion button> Audi braking
guard .
Or
• Se lect : ~I C-A-R~ I funct ion button >
Car systems*
control button > Driver assist > Audi brak
ing guard .
System -
Switch bra kin g g uard On and Off .
When you sw itch the ignition on, the message
Brak ing guard: Off appears if the system is
switched off .
Early warning -The d istance and approach
warn ings in the disp lay can be switched
On /
Off .
(D Tips
-Your settings are automatica lly sto red
and ass igned to the remote control key
being used at the t imes t he settings are
made¢ page
36.
- If you restric t the E SC, the br aking gua rd
also sw itc hes itself off~ page
198.
-Switch braking guar d off when you a re
loading the vehicle onto a veh icle car rier,
train, s hip o r othe r type of t ransporta
tion. This can prevent undesired warn
ings from the braking gua rd system.
Messages
Applies to vehicles: with Aud i adaptive cruise control
Braking guard : Off
T his dr iver mess age a ppears if t he system is
tu rned off via the radio/MM I*. Ot herw ise, if
t h e system is turned off, the information ap
pears every t ime shortly after the start of the
trip.
T he driver messa ge a lso appears if the system
is not available due to a malfunct io n or if the
ESC is not switched on¢ page
198. If th is is
t h e case, the system w ill not p rov ide warnings
about a poss ible collision.
Braking guard : Activated
T h is dr iver mess age appears if sharp b rake
pressure was applie d due to a n acu te warning.
•••
Three white dots appear if a sett ing cannot be
selected w ith the operating lever . For exam
ple, this happens if you wa nt to raise/low er
the speed even thoug h there was no previous
l y saved speed.
ACC: Sensor blocked
This message appears if the sensor v iew is ob
structed, for examp le by leaves, snow, heavy
sp ray or d irt . Clean the sensor¢ page
107,
fig .
113.
ACC: Unav ailable
The driver mess age appe ars if, for ex ample,
the b rake tempera ture is too high . The adap
tive cr uise contro l is temporar ily u nava ila ble .
A chime sounds as a reminder.
ACC: Not available
116 Audi side assist
Audi side assist
Lane change assistant
Description
App lies to vehicles: with Audi side assist
D
Fig. 124 Sensor detectio n ran ge
Fig. 125 Disp lay on the exterio r mirro r
Side assist he lps you monitor your blind spot
and traffic behind your veh icle. W ith in the
limits of the system, it warns you about
vehicles that are coming closer or that are
traveling with you within sensor range
(D
c:> fig . 124. If a lane change is classified as
critical, the display @in the exterior mirror
¢ fig.125turnson.
The display in the left exterior mirror provides
assistance when mak ing a lane change to the
le ft, while the display in the right exter ior mir·
ror 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 class ified as critical. The display
in the respective mirror turns on, but is d im. T
he 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 s ignal, s ide ass ist
warns you about vehicles that are detected
and class ified as critical. The display in the re
spective mirror blinks brightly . If this hap
pens, check traffic by glancing in the rearview
mirror and over your shoulder c:>
.&. in General
information on page 117.
(D Tips
- You can adjust the brightness of the dis
play @c:>
poge 118.
-Please refer to the instructions for tow·
ing a trailer located in ¢
page 117.
General information
Applies to vehicles: with Audi side assist
®
Fig . 126 Driving situations
Fi g. 1 27 Rear of t he ve hicle: Pos it ion of the sensors
M
m 0 ci: .. a,
Side assist functions at speeds above approx i
mately 19 mph (30 km/h).
@ Vehicl es th at ar e approaching
In certain cases, a vehicle will be classified as
cr itical for a lane change even if it is still
somewhat far away. The fas ter a vehicle ap
p roaches, the sooner the display in the exteri
or m irror will t urn on.
@ Vehicles traveling with you
Vehicles traveling w ith you are indicated in the
exterior m irror if they are classified as cr itical
for a lane change. All vehicles detec ted by
side assist are indicated by the time they en
ter your "blind spot", at the latest.
Audi side assist 11 7
@ Vehicle s left behind
If you s low ly pass a vehi cle that s ide assist has
detected (the difference in speed between the
vehicle and you r vehicle is less than 9 mph or
15 km/h), the display in the exterio r mir ror
turns on as soon as the vehicle enters your blind spot.
T he disp lay will not t urn on if you quickly pass
a vehicle that side assist has detected (the dif
ference in speed between the veh icle and your
vehicle is greater than 9 mph or 15 km/h).
Functi onal limitations
The radar sensors are designed to detect the
left and right adjacent lanes when the road
lanes are the normal width. In certain situa
tions, the d isp lay in the exterior mirror may
turn on even though there is no veh icle locat
ed in the area that is cr itical for a lane change.
For example:
- if the lanes are narrow or if your are dr iving
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 you r
current lane .
- if you a re driving through a curve. Side assist
may react to a vehicle that is one lan e ove r
from the adjacent lane.
- if side assist reacts to other objects (such as
high or d isp laced guard rails) .
- In poor weather conditions. The side assist
functions are l imited .
Do not
cover the radar sensors¢ fig. 127 with
stickers, depos its, bicycle wheels or other ob
jects, because this will affect the funct ion. Do
not use s ide ass ist when towing a trailer. For
i nformation on cleaning, refer to ¢
page 217.
_&. WARNING
-Always pay attention to traffic and to t he
area a round your ve hicl e. S ide assist can
not replace a driver's attention. T he driv
er a lone is always responsible fo r lane
changes and similar driving mane uvers.
118 Audi sid e as sist
- Improper reliance on the side ass ist sys
tem can cause co llisions and serious
persona l injury:
- Never rely only o n side assist when
ch anging lanes.
- Always check rear view m irrors to make
sure that it is safe to change lanes.
- Side ass ist cannot detect a ll vehicles un
der all cond it ions -danger of ac cident!
- Please note that side assist indicates
there are approachi ng veh icles, o r
vehicles in your blind spot, on ly afte r
yo ur vehicle has rea ched a driving speed
of at least 19 mph (30 km/h).
- In certain s ituations, the system may not
f unc tion o r its fun ct io n may be lim ite d.
For example:
- if veh icles are approaching or being left
behind very quick ly . The display may
not turn on in time.
- in poor weather co ndit ions such as
heavy ra in, snow or heavy m ist .
- 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.
(D Note
The sensors ca n be displaced by impacts or
damage to the bumpe r, wheel housing and
unde rbody . This can affect the system.
Have your author ized Audi dealer or au
thori zed A udi Se rvice Facility check the ir
function.
@ Tips
- If the window g lass in the driver 's door
o r fro nt passenger's door has been tin t
ed, the disp lay in the exterior mirror may
be misinterp reted.
- Fo r De clarat ion of Compliance to Uni ted
Sta tes FCC and Industry Canada regu la
tions¢
page 296.
Activating and deactivating
Applies to vehicles: with A udi side assist
F ig. 128 D river 's doo r: Side ass ist butto n
.. Press the button c> A in General informa
tion on page 117
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 con be set in the radio
or MM!* .
-"' ~ a: co a,
.. Select: I CAR I function button > Audi side a s
s ist .
Or
.. Select: l~c -A ~R~ I function button > C ar systems *
control button > Driver a ss ist > Audi sid e
a ss ist .
The display br ightness adjusts automatical ly
to the brightness of the surroundings, both in
the info rmation and in the warning stage . In
very dark or very bright su rroundi ngs, the dis
play is already se t to the m inimum or maxi
mum leve l by the automatic adjus tme nt. In
s u ch cases, you may notice no change when
adjusting the brightness, or the change may only be noticeable once the surroundings
change.
Adjust the br ightness to a leve l whe re the dis
play in the information stage wi ll not d isrupt
your view forward. If you change the bright
ness, the display in the exterior mirror will
briefly show the br ightness 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
i nformation stage adjustment.