given to another person, the saved settings remain as they are .
System limitations
General information
Applies to vehicles: with adaptive cruise co ntrol
The radar sensor has limits that the driver
must know to be able to use ACC properly .
The adaptive cruise control works within lim its that are also related to radar sensor range
and sight distance . In some situations ACC
may react unusually or late from the driver's
point of v iew. Therefore, always be attent ive
to what is happening around you and always
be ready to intervene, if necessary:
-when driving around curves ¢page 125
- when vehicles up front are not in line with
your vehicle ¢ page 126
- when other veh icles are changing lanes
i=> page 126
- when other vehicles are difficult to detect i=>page 126
- when vehicles up ahead are not moving or obstacles are in your travel lane i=>page 126
A WARNING
The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving veh icles up ahead may not be
prompt ly detec ted or may not be detected
a t all.
- Always pay careful att ention to the traf
fic s ituation and be ready to intervene
and be re ady to take comp lete cont rol
whenever necessary.
Ad apti ve crui se control 125
When driving around curves
App lies to vehicles: wit h adaptive cruise control
Fig. 139 Ve hicle e nter ing a curve
Fi g. 140 Ve hicle leav ing a curve
Entering a curv e
When entering a curve, the adaptive cruise
control may react to a vehicle in the next lane
and apply the brakes in your vehicle
¢ fig . 139. The braking action can be overrid·
den by depressing the accelerator pedal.
L e aving a curv e
At the end of very long curves, ACC's predic
tive lane reading can cause ACC to react to an
other vehicle in the next lane and app ly the
brakes on your vehicle¢ fig . 140. The braking
action can be overr idden by depress ing the ac
ce lerator pedal.
126 Adaptive cruise control
Vehicles offset to one side
Applies to vehicles: with adaptive cruise control
Fig. 141 Vehicle traveling a head o utside the detect ion
range of t he rada r se nsor
Vehicles mov ing up ahead but offset i n the
la ne cannot be detected by ACC until they are
in sensor range.
Lane changes by other vehicles
Applies to vehicles: with adaptive cruise control
Fig. 142 A vehicle changes lanes
Vehicles that cut into your lane a sho rt dis
tance in front of you cannot be detected by
ACC until they are in senso r range.
Vehicles that are difficult to detect
Applies to vehicles: with adaptive cruis e contro l
Fig. 143 Two -wheeled vehicle driving ahead
Some vehicles moving up ahead in your lane
of trave l are difficult to detect, for examp le
two -wheeled veh icles, vehicles w ith high
ground clearance, loads sticking out the back .
Vehicles like this are often detected late or in
some situations not at all.
Stationary vehicles
Applies to vehicles: with adaptive cruise contro l
Fig. 144 Turning and stationary ve hicle
Fig. 145 Sheering out and stat ionary veh icle
If a vehicle that has been detected by ACC ex
its the highway or sheers out into the neigh
boring travel lane, and there is a stationary
vehicle ahead of that vehicle, ACC will not de·
tect or react to that stationary vehicle
<=> fig. 144 and c> fig. 145 .
Audi braking guard
Description
Applies to vehicles: with a daptive cruise co ntrol
Audi braking guard warns you of a possible
collision with a moving vehicle up ahead .
Fig. 146 Display in the instrument cluster
The Audi braking guard is active from a speed
of approx. 20 mph (30 km/h) and works with
in the system limits¢
page 125 even when
the adaptive cruise contro l is deactivated.
A radar sensor is bu ilt into the front of the ve
hicle
¢page 114, fig. 127. The system is in
tended to measure the distance to reflective
surfaces .
If a measurement is not possible,
the system does not respond.
When the measurement has been taken, the
system can recognize a possibly hazardous sit
uation, for example, whe n a vehicle up ahead
in your lane of trave l sudden ly brakes or when
your own vehicle is moving at high speed to
wards a much slower vehicle up ahead . As
soon as the system senses that a possible col
lision with the vehicle up ahead can only be
avoided by immed iate full brake application or
by an avoidance maneuver, a warning appears.
The system has a defau lt response time to be
able to signal before a collision occurs. This
system response time is automat ica lly re
duced if you acce lerate actively, fo r example
to join a highway. Braking, transverse acceler
ation and the steering angle can lead to a re
duced system response time. The warning is
deactivated if you begin to overtake with full
acceleration .
Adaptive cruise control 127
The system can make you aware o f two differ
ent hazardous situations:
Distance
The distance warning is given if the system
calculates that there is not enough distance
to the vehicle up ahead a period of more than
S seconds . If the distance is less than 30 feet
(9 meters) at SO mph (80 km/h), for examp le,
an optical display comes on in the instrument
cluster¢
fig. 146.
If the vehicle ahead brakes sharp ly, Audi brak
ing guard cannot help you to avoid a collision,
even in the case of an immediate response.
Take immed iate action to avoid the co llision
and increase the distance to the vehicle up
ahead.
Speed
If there is a much slower vehicle moving up
ahead in your lane, or if the vehicle ahead
brakes sharply, the Aud i brak ing guard calcu
lates the po int from which a collision can only
be avoided by full braking or by an avoidance
maneuver. If a warning does sound, a poss ible
collision with the ve hicle in front can on ly be
avo ided through an evasive maneuver or by
braking.
The warning is given in two stages :
-Pre-warning: A visual display appears in the
instrument cluster and a warning tone
sounds.
- Acute warning: If you do not respond to the
pre-warn ing, the second stage warning is
given. A quick brake application helps to di
rect your attention to the road and traffic
situation.
Under heavy braking, the brake ass istant
¢
page 114 also helps you benef it from maxi
mum brak ing efficiency.
A WARNING
Inatt ention can cause collisions, other ac
cidents and serious personal injuries.
128 Adapti ve crui se co ntrol
-Always pay close attenti on to t he traffic,
even w hen the Aud i brak ing guard is
switched on. The Aud i b rak ing guard pro
vides a warning but does no t brake the
car for you . You m ust apply t he brakes
yours elf!
- Always ke ep the sa fe and legal distance
betwe en your vehicle and veh icles up
ahead.
-Audi braking guard works within limits and w ill not respond outs ide the system
limits, for examp le when approaching a
stopped vehicle or s tationary obstacle
(end of a traff ic jam or veh icle that has
broken down in traffic).
- Always remember th at the radar sensor
f or the A udi braking guard wo rks within
defined detection and range limits that
may prevent the proper detection of oth
er veh icles.
- 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.
- Always pay careful attention to the traf
fic s ituation and be ready to intervene
and be ready to take comp lete control
whenever necessary.
- Reflective surfaces includ ing crash barri
ers or tunnel entrances may impair the
function of th e radar sensor .
Settings in the MMI
Applies to vehicles: with adaptive cruise control
The settings of the Audi braking guard are
performed in the MMI.
.. Se lect :
ICARI fu nct ion button> Systems *
control button > Audi braking guard . Or
.. Se lect:
I CARI funct ion button > Car sys
tems *
control button > Driver assist > Audi
braking guard .
- System -
the Audi braking guard system can
be switched
On and Off .
-Early warning -the acoustic warning and
the messages can be switched
On and Off .
(D Tips
When handing ove r the keys to another
person, the p revious settings are adopted
i f the Audi braking g uard is activated
¢ page 43.
Driver's information in the instrument
cluster display
Applies to vehicles: with adaptive cruise contro l
Braking guard activated
Th is message appears when the Aud i b ra ki ng
guard applies the brakes du ring a second
st age (a cute) war ning .
Braking guard off
This message appears when the system has
been deac tivated via the MMI. This message
also appea rs br iefly at each beginn ing of a t rip
i f t he sys tem is swi tched off .
This message also appears when the system is not available because of a malfunct ion or if
E SC is switched to the Off road
mode ¢ page 225. The system can no longe r
war n of an impending coll is io n.
Audi side assist Lane Change Assistant
Description
App lies to vehicles: with side assist
The side assist helps you when changing
lanes .
AUDl Q7
Fig. 147 Rear b umper: Pos it ion of radar sensors (not
v isib le on outside)
Fig . 148 Signal light on the outside mirror -driver 's
s ide
~ -..:, .. (D
Side assist uses radar sensors (not visib le on
outside) ¢
fig. 147 to help the driver check
b lind spots, and see what is happen ing in traf
fic beh ind the veh icle
¢ page 130, fig. 150.
Signal lights are bu ilt into both outside m ir
r ors ¢
fig. 148. The signal light on the left
outside mirror assists when moving over into
the left lane and the signal light on the r igh t
ou tside mirror assists when moving over in to
the right lane .
The s ignal light comes on to tell you that side
assis t has detec ted a vehicle on tha t side and
that t he position of this othe r vehicle should
be taken into account if yo u were to change
lanes . This is called the
informatio nal st age
sign al¢
page 131. The informat ional stage
Aud i side assist 129
signal is designed so that you notice it on ly
when you are looking in the outside mirror.
When yo u activate the turn signal and side as
s ist de tects a vehicle in a no table location, the
corresponding signal on the outside mi rror
flashes briefly and brightly several times. This
is the
a lert stage signal ¢ page 131 .
Activating and deactivating
Applies to vehicles: wit h side assist
Fi g. 14 9 Drive r's doo r: Side assist button
Activating
.,. Press the ¢
fig. 149 button. The ind icator
on the b utton lights up.
Deactivating
.,. Press the button again. The indicator light
on the button goes out .
The system works at speeds faster than
19 mph (30 km/h) .
A WARNING
-Imp roper reliance on the side assist sys
tem can cause collis ions and serio us pe r
sonal injury:
- Never rely on ly on side assist when
changing lanes.
- Always check rear view mirrors to make
su re that it is safe to change lanes.
- Side assist canno t detect all veh icles un
de r all conditions- danger of accident!
- Side assist cannot detect vehicles in time
to a lert you w hen they app roac h from
behind at very hig h speed, or fall drop
back very qu ickly.
~
130 Audi side assist
-The radar sensor's vision can be reduced
or entirely blocked by rain, snow, and
heavy spray . This can result in side assist
not adequately detecting vehicles or, in
some cases, not detecting them at all.
Always keep an eye on the direction you
are traveling and the relevant area
around the vehicle.
- 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).
- Side assist signal does not work around
tight corners (turning radius less than
328 feet, or 100 m).
- Side assist is no replacement for the driv
er's full attention. The driver alone is re
sponsible for lane changes and similar
driving maneuvers. Always keep an eye
on the direction you are traveling and the relevant area around the vehicle.
- To ensure that you do not adversely af
fect side assist, do not block the area on
the rear bumper where the radar sensors
are located with foreign objects (such as
stickers or bicycle racks).
- Make sure that the signal light on the
outside mirror is not blocked by stickers
or other items.
(Di Tips
- Side assist automatically deactivates if it
detects that the radar sensors are
blocked ¢
page 135. The indicator light
on the button goes out .
- The area on the bumper where the radar
sensors are located must consistently re
main free of snow, ice, and heavy soiling
so that side assist can function properly.
Follow the additional notes on
¢page 136.
-For vehicles with a factory installed tow
ing hitch* or a trailer hitch* that was in
stalled later according to factory specifi
cations, side assist is automatically deac- tivated
as soon as the electrical connec
tion to the trailer electrical socket is made
¢ page 135.
-For vehicles with a trailer hitch that was
not installed according to factory specifi
cations, switch off the side assist when
towing a trailer .
- Additional tinting on the front side win
dows can make it harder to see and cor
rectly understand the signal light on the
outside mirror.
- For Declaration of Compliance to United
States FCC and Industry Canada regula
tions¢
page 328.
Sensor detection area
Applies to vehicles: with side assist
-----··· .... ·--·--
@ / ,
--
ill b''T -
Fig. 150 Sc hematic illustration: Sensor detectio n area
The detection ¢ fig. 150 of the radar sensor
detection area is made up of:
-
- the approach area (light red area) (D, about
230 feet (70 m) behind the vehicle, and
- the "blind spot" (dark red area) @.
The radar sensors cover the adjacent left and
right lanes. Other lanes are
not covered by the
radar sensors.
(D Tips
Side assist does not measure actual lane
width. The system assumes a fixed lane
width . Detection in the left and right lanes
is based on this assumed lane width.
When driving on narrow roads or when
driving to the left or right of the center of
a travel lane, it is possible that vehicles
will be detected that are
not in the lane
next to the lane you are using
¢page 135.
Operation
Applies to vehicles: with side assist
Side assist compares the distance and differ
ence in speed of detected vehicles with the
speed of your vehicle . Whenever the differ
ence in speed and d istance is registered as no
table if you were to change lanes, a signal l ight appea rs on the respective mirror.
The signal can light up if you are passed by a
vehicle or if you are pass ing another vehicle.
If you pass another vehicle s lowly (difference
in speed less than 9 mph, or 15 km/h), the
signal light will come on as soon as the other
vehicle is in your blind spot and is detected by
side assist . When the difference in speed is
g reater, the signal light will not come on.
Informational and alert stage signals
Applies to vehicles: with side assist
Side assist has two signal stages:
- the informational stage signal, and
- the alert stage signal.
Side assist he lps you by using the appropriate
signal stage, depending on whether or not
you have activated the turn signal, and thus have indicated that you are or are not chang
in g lanes .
Informational stage signal
As long as you have not activated the turn sig
nal, side assist informs you of detected
vehicles that are registered as being in a nota
b le location if you were to change lanes.
Whenever the detected vehicle's difference in speed and distance is registered by side assist
as notable, the signal light on the respective
mirror produces muted illuminat ion.
The br ightness of the informat ional stage sig
nal is designed not to be as intense, so that it
does not interfere with your view of the road
when yo u are driving and have no intention of
changing lanes. When you look i n the outside
Aud i side assist 131
mirror, you can clearly see the informational
stage signal.
Alert stage signal
When you activate the turn signal, and s ide
ass ist has detected a vehicle in a notable loca
t ion on that part icular s ide, the signa l light on
this side mirror flashes brightly. The repeated
brief and bright flashing of the alert stage
signal reminds you to carefully check traffic to
the rear in the outside mirror and over your
shoulder, so that you can safely complete the lane change
¢ A in Safety tips on page 136 .
@ Tips
The brightness of the signal light on the
outside mirrors can be adjusted with the
MMI ¢page 134.
Driving situation: Fast approaching
vehicles
Applies to vehicles: with side assist
Fig. 151 Side assist : Fast app roaching vehicles
@ Signal on outside mirror does not light
up
No vehicle was detected by the sensors. The
signal on the outside mirror does not light up
¢ A in Safety tips on page 136. IJJ,,
Lane width
Applies to vehicles: with side assist
-· Fig. 155 Lan es o f a norma l wid th a re in detect ion area
Fig . 156 Narrow lanes: Side ass ist may detect vehicles
two la nes away
Side assist's detection area is designed to cov
e r l anes of standard w idth to the left and
r ight of your travel lane, depending on wheth
er you dr ive in the center of your lane or closer
to the edge.
I f you drive in narrow lanes, s ide ass ist's de
tec tion a rea may a lso incl ude other lanes -es
pec ia lly if you tend to drive on the edge of
your lane
c:::> fig. 156 . Under these cond it ions,
ve hicles can also be detected that are two
lanes away, and side assist then could switch
between the informat ional and warn ing stage
signals.
When driving in very wide lanes, vehicles in
the adjacent lane may not be detected be
cause they are not inside the detection area.
Notes
Messages in instrument cluster display
Applies to vehicles: with side assist
If s ide ass ist t urns off automa tically, the ind i
cator l igh t on the button wi ll go ou t and you
Aud i side assist 135
will see a message in the instrument cluster
display:
Audi side assist not available: sensors
bloc ked
The side assist sensors are built into the rear
bumper on the left and r ight (not visible on
the outside)
c:::> page 129, fig . 147. To ensure
that you do not adversely affect the way side
ass ist functions, foreign objects (such as stick
ers or bicycle racks) should not be attached to
the area on the rear bumper where the sen
sors a re located . If side ass ist functions are
adverse ly affec ted, you w ill see th is message
in the instrument cluster disp lay . Remove any
th ing t hat may be blocking the sensors.
If no vehicle is detected for a longer per iod of
t ime wh ile dr iv ing, s ide ass ist w ill also switch
off automatically.
Audi s ide as sist cu rrentl y not available
If there is a temporary problem (such as the
vehicle 's battery charge be ing low), side assist
cannot be act ivated temporar ily .
Audi side assis t: sy stem fault
Have the system checked by an author ized
Audi dealer or qualified workshop.
Audi side assist not availabl e when
towing
The radar sensor's view is limited when tow
ing a tra iler. For vehicles with a factory instal
led tow ing hitch or a trailer hitch that was in
stalled later according to facto ry specifica
tions, s ide ass ist is automatically deact ivated
as soon as the ele ctrical connection to the
trailer's e lectrical socke t is made, and this sta
tus message appears in the instrument clus
ter display. Deactivation cannot be guaran
teed when using a retrofitted towing hitch
that was
not installed according to factory
specifications.