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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
- 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 hydrop lan
ing). Using the system under these condi
t ions could resu lt in a col lision.
- Switch adaptive cruise control off tempora
rily when driving in turn ing lanes, on ex
pressway exits or in construction zones. This
prevents the vehicle from accelerating to
the set speed when in these situat ions.
- The adapt ive cr uise control sys tem wi ll not
brake by itself if yo u put you r foot on the ac
celerator pedal. Doing so can ove rride the
speed and distance regulation.
- When approach ing stationary objects such
as stopped traffic, adaptive cruise control
will not respond and braking g uard will have
limited function.
- The adapt ive cr uise control system and brak
ing guard do not react to people, animals,
objects cross ing the road or oncoming ob
jects .
- The function of the radar sensors can be af
fected by reflective objects such as guard
rails, the entrance to a tunnel , heavy rain or
ice.
- Never follow a veh icle so closely that you
cannot stop your vehicle safe ly . The adap
t ive cru ise control cannot s low or brake the
vehicle safely when you fo llow another veh i
cl e too close ly. Always remembe r that the
automa tic brak ing funct ion c annot bring the
vehicle to a sud den or emergency stop un
der these conditions.
- To prevent unin tended operation, always
switch ACC off when it is not be ing use d.
(D Note
The sensors can be displac ed by impacts or
damage to the bum per, whee l hou sing and
unde rbody. That could affe ct the adap tive
cruise contro l system and braking guard . Have
your authorized A udi dealer or authorized
Audi Service Facility c heck their function.
86
In curves
App lies to vehicles: wi th Aud i adapt ive cru ise contro l
Fig. 90 Examp le: dr iv in g in to a curve
When dr iving into a curve c:::> fig. 90 and out of a
curve , the adaptive cruise control may react to an
object in the neighboring lane and apply the brakes . You ca n prevent that by pressing the ac
ce lerator pedal b riefly.
Stationary objects
App lies to vehicles: wi th Aud i adap tive cr uise con tro l
Fig .
91 Exa mple: object chang ing la nes a nd stat ion ary ob ·
j e ct
The adaptive cruise contro l system only reacts to
ob jects that are moving or that the system has
already detected as moving. For example, it can
react when a vehicle that has already been de
t ec ted @ turns or changes lanes, but adapt ive
cruise control does not react to a stationary vehi
cle @.
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
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- 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 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.
Audi active lane assist
White line(s)
Active lane assist is activated
and ready to provide warn ings.
Red line(s) Active lane assist warns you
(left or right) before leav ing a lane
¢fig . 102 . In addit ion, the
steering wheel vibrates lightly .
Gray line(s) Active lane assist is activated, but not ready to give warning
¢fig. 103.
Messages in the instrument cluster display
If the active lane assist switches off automatical
ly, the indicator light in the display turns off and
one of the following messages appears:
Audi active lane a ssist: Currently unavailable .
No camera view
This message appea rs if the came ra is unab le to
detect the lines . Thi s co uld happen if:
- The camera field of view ¢
page 95, fig. 101 is
dirty or covered in ice. Clean this area o n the
winds hield.
- The camera field of view is fogged over. Wait
until the fog has cleared before switching the
active lane assist on again.
- T he system has been unable to detect the lanes
for an extended period of time due to road con
ditions. Switch the active lane assist back on
when the lines are more visible.
Audi active lane assist : currently unavailable
There is a temporary active lane ass ist malfunc
tion . Try switching the active lane assist on again
later .
Audi active lane assist : system fault!
Drive to an a uthorized Aud i dea ler or authorized
Audi Service Faci lity immediately to have the
malfunct ion corrected.
Audi active lane assist: Please take over steering
This message appears if you are not steering by
yourse lf. If this is the case, active lane assist does
not swi tch off, but it is "not ready" to provide a
warn ing. The system can help you keep the vehi
cle in the lane. However, yo u are responsible for
driving the vehicle and must steer it yourself.
96
· Adjusting the vibration warning
Applies to veh icles: with Audi active lane assist
.,. Select: the I CARI function button > (Car) * Sys
tems
control button > Driver assistan ce > Audi
ac tive lane assist .
You can switch the add itiona l vibrating war ning
in the steering wheel on or off.
(D Tips
Your settings are automat ical ly stored and as
signed to the remote control key being used.
Audi side assist
General information
App lies to vehicles: with sid e assist
®
@
©
Fig. 106 Driving s itua tions
~ AUD I
• 0 0 •
Fig. 107 Rear of the ve hicle: pos it io n of t he sensors
Side assist functions at speeds above approx i
mately 19 mph (30 km/h).
(D Vehicles that are approaching
In certain cases, a vehicle will be classified as
critical for a lane change even if it is still some
what far away . The faste r a vehicle approaches,
the sooner t he d isplay in the exter io r mirro r will
turn on.
@Vehicles traveling with you
Vehicles traveling w ith you are indicated in the
exterior mirror if they are classified as critical for
a lane change. All vehicles detected by side assist
98
are indicated by the time they enter your "blind
spot", at the latest.
@ Vehicles left behind
If you slowly pass a veh icle that side assist has
detected (the difference in speed between the ve
hicle and your vehicle is less than 9 mph or 1S
km/h), the display in the exterior mirror turns on
as soon as the vehicle enters your blind spot.
T he display will not turn on if you quickly pass a
vehicle that side ass ist has detected (the differ
ence in speed between the vehicle and your vehi
cle is greater than 9 mph or 15 km/h).
Functional limitations
The radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width. In certain s ituations, the dis
play in the exterior mirror may turn on even
though there is no vehicle located in the area that
i s 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 anoth
er lane that is
not adjacent to your current lane.
- if yo u are driving through a c urve . Side assist
may react to a vehicle that is one lane over from
the adjacent lane.
- if side assist reacts to other objects (such as
high or displaced guard rails).
- In poor weather conditions . The side assist
functions are limited.
Do not cover the radar sensors
q fig. 107 with
stickers, deposits, bicycle wheels or other ob
jects, because this will affect the function . Do not
use side assist when towing a trailer . For infor
mation on cleaning, refer to
q page 205 .
A WARNING
-Always pay attention to traffic and to the
area around your veh icle. S ide ass ist cannot
replace a dr iver's attention . The driver alone
is always responsible for lane changes and
sim ila r driv ing maneuvers.
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Audi drive select Driving settings
Introduction
Drive select makes it possible to experience dif
ferent types of vehicle settings in one vehicle.
The driver can select
Comfort, Auto and Dynamic
modes in the Infotainment system to switch be
tween a sporty and a comfortable driving mode.
In the
Individual mode, the settings can be ad
justed to your personal preferences. This makes it possible to combine settings such as a sporty en
g ine tun ing with light steering.
_&. WARNING
Improper use of the Audi drive select can
cause collisions, other acc idents and serious
personal injury.
Description
-
The follow ing systems are affected by drive se
lect:
Engine and transmission
Depending on the mode, the eng ine and the
transmission respond quicker or in a more bal
anced manner to acce lerator pedal movements.
I n the sporty dynamic mode, the transmission
shifts at higher RPMs.
Air suspension*
The adaptive air suspension/adaptive air suspen
sion sport*
(Air suspension in the MMI) is an
e lectronically controlled a ir suspension and
damping system. They are adjusted depending on
the selected driving mode, the driver's steering,
b raking and acce leration input and the road sur
face, vehicle speed and load. A sporty setting is generally used in vehicles with adaptive air sus
pension sport*.
The vehicle clearance varies depending on these lected mode and the speed.
The highway setting is activated automatically
when you drive above 75 mph (120 km/h) for
more than 30 seconds in the
Auto or Dynamic
Audi drive select
mode. The ground clearance is increased auto
matically if the speed drops below 44 mph (70
km/h) for more than 120 seconds.
Steering
T he steering adapts in terms of steer ing effort
and steering ratios . Indirect steering that moves
easily, like the steering in comfort mode, is best
suited to long drives on a highway. In contrast,
dynamic mode provides sporty, direct steering.
T he following applies to vehicles with dynamic
steering*: the steering ratio changes based on ve
hicle speed in order to maintain optimum steer
ing effort for the driver at all times. This sets the
steering to be less sensitive at higher speeds in
order to provide improved vehicle control. At re
duced speeds, however, steering is more direct in
order to keep the steering effort as minimal as
poss ible when the driver is maneuvering the vehi
cle. At low and average speeds, dynamic steer ing
additionally provides more responsive steering
performance.
Sport differential*
As a component of the all wheel dr ive system
(quattro)
¢ page 192, the Sport differential* dis
tributes the driving power to the rear axle de
pending on the sit uation. The distribution of
power varies depending on the selected mode,
from balanced (comfort) to agile (dynamic) . The
goal is a high level of agility and ability to accel
erate on curves. The vehicle is very responsive to
steering.
Curve light*
T he curve light adapts to driving on curves. The
pivoting action and the lighting are also adapted
to the mode.
Adaptive cruise control*
T he behav ior when accelerating can be adjusted
from comfortable to sporty, depending on the
drive select mode. Adaptive cruise control a lso
responds to the driving behavior of the vehicle
ahead in a more conservative or sporty manner. ..,_
101