_____________________________________________ A_d_ a _.!,. p __ t __ iv _ e_ c_r _u _is _ e_ c _ o_n_ t_ r_ o _ l __ lJIII
Applies to vehic les: with adapt ive cru ise contro l
How is the distance (time interval) set?
Distance con be set in four stages .
m 0 [;; ,.: 00 a,
Fig. 128 Control lever:
Setti ng distance
-Push the s lider switch onc e to the right 0 or to the left
0 ~ fig. 128. The distance currently set is shown for 3
seconds in the inst rument cluster display.
- Push the slider switch again to the right 0 or to the left
0 to increase or to decrease the distance by one step.
Selec t d ista nce
The distance at whic h the adaptive cruise control follows a vehic le
in front is determined by
time intervals. A time interva l to a vehicle
in front is established and maintained . This produces a speed
dependent interval. The higher the speed, the greater the safety
interva l in yards (meters) =>& .
The distances provided are specified values . These distances may
exceed or fall short of these target distances, depending on the
driving situa tion and the driving style of the vehicle ahead .
Dista nce 1 e::::,_e::::, __ _
This setting is idea l for brisk driving in bumper -to-bumper traffic.
T he distance is one second. This is the equivalent of, for instance,
• a dis tance of 36 feet (1 1 meters) at a speed of 25 mph (40 km/h)
Controls and equip
ment
• a distance of 72 feet (22 meters) at a speed of 50 mph (80 km/h)
• a distance of 108 feet (33 meters) at a speed of 75 mph (120 km/h)
Distance 2 e::::, __ e::::, __
This setting is ideal for "keeping pace" comfortably in bumper-to
bumper traffic. The distance is 1.3 seconds. This is the equivalent of,
for instance,
• a distance of 46 feet (14 meters) at a speed of 25 mph (40 km/h)
• a distance of 95 feet (29 meters) at a speed of 50 mph (80 km/h)
• a distance of 144 feet ( 44 meters) at a speed of 75 mph (120 km/h)
Dista nce 3 e::::, ___ e::::,_
This sett ing is idea l for "keeping pace" in bumper -to -bumper traffic
and is the equivalent of the generally recommended distance that is
"ha lf of the speedometer speed" . The distance is 1.8 seconds . This
is the equivalent of, for instance,
• a distance of 66 feet (20 meters) at a speed of 25 mph (40 km/h)
• a distance of 131 feet (40 meters) at a speed of 50 mph (80 km/h)
• a distance of 197 feet (60 meters) at a speed of 75 mph (120 km/h)
Dista nce 4 e::::, ____ e::::,
This setting is idea l for secondary road traffic . The distance is 2.3
seconds . This is the equivalent of, for instance,
• a distance of 82 feet (25 meters) at a speed of 25 mph (40 km/h)
• a distance of 167 feet (51 meters) at a speed of 50 mph (80 km/h)
• a distance o f 249 feet (76 meters) at a speed of 75 mph (120 km/h)
You can set the way your vehicle performs in ACC mode when accel
erating and braking in the rad io or MMI*
~ page 129. Depending on
the driving program and distance you select, your vehicle's acceler
ation and braking can range from dynamic (1) to comfortable (5). .,..
I • •
• ..__A_ d_ a-'- p_t _iv _ e_ c_r _u _ i_s _e _ c_o_ n_t _r _o _l _____________________________________________ _
Driving pro
gram
Di sta nce 1
Distance 2
D ist an ce 3
& WARNING
dynamic
1
2
2
3
standard
2
3
3
4
comfort
3
4
4
5
-
When setting the distance , the driver is responsible for adhering
to the respective national and country -specific regulations.
• Following other vehicles too closely increases the risk of colli
sions and serious personal injury .
• Setting short distances to the traffic ahead reduces the time
and distance available to bring your vehicle to a safe stop and
makes it even more necessary to pay close attention to traffic .
• Always use good judgment and select a safe following distance
for the traffic , road and weather conditions.
[ i J Tips
T he di stance se tting is re set to the factory defa ult DISTANCE 3 the
next time the ignition is turned on. •
Driver information
Applies to vehic les: with adapt ive cruise contro l
Displays in the instrument cluster
Dependin g o n the driving si tuati on, driver inform ation is
dis pla yed in the i nstr umen t clus ter.
F ig . 129 Overview instrument clu ste r
© Speedome ter and indicator lig ht dis play
® Displ ay in the instru ment clus ter
© M essage in the instr ument clus ter disp lay
© Speedometer and indicator light display
Im port ant inf orm ati on c once rning v ehicle opera tion with a daptiv e
cruise control is shown in display area@. T he desired speed you
s et is in dica ted in the sp eedometer ( LED l igh ts a rou nd th e e dge).
T he indicator lig hts show whether the system has detected a v ehic le
t rave ling ahead . ..,
Adaptiv e c ruis e co ntrol -
--------------=-----
@ Displ ay i n th e instrum ent clu ste r
In disp lay area @information from the navigation system * and the
trip computer is displayed in addi tion to informa tion about adaptive
cruise cont rol.
You can select among the different informat ion by repeated brief
taps on th e [
RESET) button on the w indshi eld wiper lever
=:> page 25 , "Operation" .
© Sta tus in dica tor
The information in area © is not displayed permanently. Informa
tion is displayed only if you set or change the sp eed setting , change
the time interval, when messages are disp layed or if the adaptive
cruise control is turned off for safety reasons. •
Applies to veh ic les: w ith ada ptive cru ise cont ro l
Speedometer and indicator light display
----
- -
- -
@ ®
Desir ed speed
- -
--
Fig . 130 I nstrum ent
c lus ter : Ind icato r ligh t
The desired speed set by the driver is displayed by a red LED in the
LED display in the speedometer.
If the desired speed was set between two lines on the speedometer
using th e
[S ET) button , the two closest light diodes will come on
=>
page 124 , fig. 129 .
Controls and equip
ment
The system al lows only speeds from 20 to 95 mph (30 to 150 km/h)
to be set. This speed range is faintly i lluminated in the speedometer
(LED ligh ts).
Indicator light s (symbols )
• © Open road : The indicator l ight shows that adaptiv e cruise
control is active and that no object is ahead o f the vehicle. A stored
speed requested is maintained .
• @ Driv ing in traffic : The indicator light indicates tha t an objec t
has been detected traveling in front. Your speed is adjusted
according to the speed of the vehicle in front . The adap tive cruise
control acce lerates and brakes automatical ly within the system's
operat ion parameters.
• ©
Driver inter venti on prompt : The red flashing warning l ight
means
Reque st for driver t o assume control. You as the driver must
slow the vehic le with the foot brake. The symbol tells you that the
adaptive cr uise control is not able to slow the vehicle down enough
to keep a enough distance to the vehicle in front of you . An warning
tone wi ll a lso sound when the symbol appears . For more informa
tion about the driver intervention prompt =>
page 128.
[ i ] Tip s
• If you use the acce lerato r to go faster than the speed of the
object ahead of you, the
dri ver intervent ion prompt wi ll not be
accompanied by a wa rning signal.
• I f the speed you previous ly set is exceeded, the indicator light in
the speedomete r wi ll switch off. •
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• ..__A_ d_ a-'- p_t _iv _ e_ c_r _u _ i_s _e _ c_o_ n_t _r _o _l _____________________________________________ _
Applies to ve hicles : w it h ada ptive c ruise cont rol
Display in the instrument cluster
F ig . 13 1 Di spl ay in the
in strum en t c luster
Scroll through the avai lab le information displays by briefly tapping
the
I RESET] button at the end of the windshield wiper lever. You can
select information from the trip computer, navigation system* or
adaptive cruise control.
@ Vehicle symbol
@ Dis tance
© Status
@ Veh icle sy mbol
The vehicle symbol indicates whether the system has detected an
object traveling in front.
• Vehicle outl in e: Open road, no vehicle ahead .
• Whit e vehi cle : A vehicle is detected ahead .
• Red vehicle: Request for driver to assume cont ro l.
@ Distance
Using the arrows and scale, you can detect how far it is to the
vehic le in front of you .
• Open road: No arrow appears when the vehicle is on an open
road and there is no vehicle ahead .
• Driving in traff ic: If a vehicle is detected ahead, the arrow moves
on the scale . The green area represents the d istance set . When
approaching s lowly, the arrow moves from the
gray zone to the
green zone on the scale .
• Reque st for driver to as sume control : When approaching rapidly,
the arrow serves as an early warning signal. If the distance selected
is exceeded or possibly not reached, the arrow
moves into the red
z one on the scale. In certain driving si tuations, you as the driver will
have to take action ::::,
page 128, "Driver interventio n promp t" .
© Status
• The tex t ACC OFF appears in white letters when adaptive cru ise
contro l is turned off.
• T he text
ACC AVAILABL E appears in white letters when the
system is turned on but no desired speed has been set .
• The text
OVE RRIDE appears in white letters when you exceed the
desired speed by accelerating .
• The text
DISTANCE! appears in red letters when the interval to a
vehic le trave ling ahea d is too short and you have to slow y our
vehic le additionally with the foot brake .
• The text messages
DISTANCE 1 to DISTANCE 4 appear in green
letters to indicate the time interva l you have se t and adaptive cruise
co ntrol is in ma nagement mode .
• I f the driving program "standard" is replaced by "comfor t" or
" d ynamic" usi ng the MMI*, the a bove text message is supp le
mented by an appropriate prompt , e.g .
DI STANCE 1 DYN . •
_____________________________________________ A_d_ a __,_ p_t_iv _ e_ c_r _u _is _ e_ c _ o_n_ t_ r_ o _ l __ !II
Ap plies to vehic les: with adapt ive cruise cont rol
System status indicator
The text messages and symbols shown in this area of the
display are not displayed perm anently.
T ime in ter va ls (s uch a s c::;, __ __ c::;, }
Fig . 132 System
sta tus i ndicator
The different symbols for the time intervals appear if you change the
settings ::::> fig. 132 .
The text message ... (three whi te dots) appears if a setting cannot be
implemented with the operating lever . The following are possib le
reasons :
• If you pull the control lever towards you to resume speed but no
requested speed was set .
• If you push the lever up to increase (or down to reduce) speed
when no speed has been set previously .
• I f you push the lever up to increase (or down to reduce) speed
and this speed is outside the range from 20 to 95 mph (Canada
models : 30 to 150 km/h) .
ACC functi onal it y limited
The text message ACC fun ctio na lit y lim ited appears when the ACC
system does not detect any objects over an extended time period.
For the time being, the distance to vehicles up ahead is not being
Controls and equip
ment
controlled . The ACC system is not switched off, so increased alert
ness is required. The following may be reasons for the text message
ACC Functiona lly limited:
• The ACC sensor is dirty. The ACC system is not reacting, or is not
react ing correctly, to veh ic les traveling ahead.
• I t is possible that you are driving on a road with very light traffic
without anything at the side of the road (e.g. guard rai ls, traffic
signs, trees). As soon as a vehicle is detected by the system again,
it returns to its control range and the text message disappears .
The ACC sensor is located in the right front trim grille::::>
page 118,
fig. 122 . If there is a loss of operation due to heavy contamination,
this area should cleaned to restore proper operation .
ACC not available
The text message ACC not available appears , for example, if the
temperature of the brakes is excessive. Adaptive cruise control is
temporarily not availab le . A warning tone sounds as a reminder .
ACC not a vailable !
The text message ACC not ava ila ble! appears in the event of a
malfunction . Adaptive cru ise control is turned off . A warning tone
sounds as a reminder. Have the system inspected by a qua lified
dea lership .
ACC sensor blo cked !
The text message ACC s ensor blocked ! appears when the ACC
system can no longer guarantee safe detection of objects. Adaptive
cruise control is turned off . A warning tone sounds as a reminder.
To decide whether it is necessary to switch off the ACC (ACC sensor
b locked
!) or if it is only a temporary condition (ACC F unctionally
limited), the system wi ll a lso takes into consideration the outside
temperature and/or the windshield wiper operation.
The ACC senso r is dirty or b locked (e .g . leaves, snow).
The sensor should be cleaned to restore proper sensor function
::::>
page 118, fig. 122 .
I • •
-Adaptive
cruise contro l "----'-----------------
Fig. 141 Sheering o ut
and stationary vehicle
If a vehicle that has been detected by the ACC system turns off or
sheers out, and there is a stationary vehicle ahead of that vehicle,
the ACC system does not respond to the stationary vehicle
~ page 131, fig. 140 and~ fig. 141. •
Audi braking guard
Applies to vehicl es: wi th a dapt ive c ruise co ntrol
Description
Audi braking guard warns you of a threatening collision
with a vehicle ahead .
Fig. 142 Display in the
instrument cluster
The Audi braking guard is active from a speed of approx. 20 mph
(30 km /h) and works within the system limits~
page 130even when
the adaptive cruise control is deactivated .
A radar sensor is built into the front of the vehicle~
page 118,
fig. 122. The system is intended to measure the distance to reflec
tive surfaces. If a measurement is not possible, the system does not
respond.
When the measurement has taken place, the system can assess a hazardous situation, when a vehicle ahead suddenly brakes or when
your own vehicle is driving at high speed towards a much slower
vehicle ahead. As soon as the system assumes that a possible colli
sion with the vehicle ahead can only be avo ided by immediate all
out braking or by an avoiding maneuver, a warning appears.
The system has a pre-set response time to be able to warn in good
time. This system response time is automatically reduced if you acce lerate actively, for example to join a highway. Braking, trans
verse acceleration and the steering angle can lead to a reduced
system response time. The warning is deactivated if you begin to
overtake with full acceleration .
The system draws your attention to two different hazardous situa
tions:
Distance
The distance warning is issued in the event of inadequate distance
to the vehicle ahead a period of more than 5 seconds . If the distance
is less than 30 feet (9 meters) at 50 mph (80 km/h), for example, an
optical display is faded in on the instrument cluster~ fig. 142.
If the vehicle ahead brakes sharply, a collision cannot be avoided,
even in the case of an immediate response. In this case , increase the
distance to the vehicle ahead.
Speed
If there is a much slower vehicle ahead in your lane, or if the vehicle
ahead brakes sharply, the Audi braking guard calculates the point
from which a collision can only be avoided by all -out braking or by
~
_______________________________________________ A_ d_ a.!.p _ t:.:. i_v _e___; c_ r_ u_ i_ s _ e_ c:.:. o.::..:.. n:.:.t:.:. r..:o :.:. l __ ftllll
an avoidin g maneuver. If a warni ng does sound, a possibl e col lis ion
w ith th e vehicle in fro nt can b e avo id ed thr ough a n evas ive
maneuve r or by brakin g.
T he warning is given in two stages:
• Pre-warning: A n op tica l disp lay a pp ea rs in th e in str umen t clus te r
and a warn ing tone sounds.
• Acute warning : If you do not respon d to t he pr e-war nin g, the
second stage, the acute warning, is iss ued. A brake jo lt rem inds yo u
t o conc entrat e on the road again.
U nde r heavy breakin g, brak e assist=>
page 239 also he lps you
obtain maxi mum braking efficie ncy.
& WARNING
Always pay attention to traffic , even when the Audi braking guard
is switched on . You are always responsible for your speed and the
distance between your vehicle and other vehicles .
• Always keep the legally stipulated safety distance between
your vehicle and the vehicle ahead -danger of accident!
• The Audi brak ing guard does not respond outside the system
limits , for example if you approach a stationary obstacle (end of a
traff ic jam or breakdown vehicle ).
• Please observe that the Audi braking guard is subject to restric
tions in narrow bends due to the field of vision of the radar sensor.
This may possibly lead to obstacles not being detected.
• The radar sensor's
vision can be reduced by rain , snow and
heavy spray. This can result in vehicles driving ahead being inade
quately detected or , in some circumstances , not detected at all .
Always watch where you are driving.
• Reflecting objects such as e .g . crash barriers or the entrance to
a tunnel may impair the function of the radar sensor . •
Controls and equip
ment
Ap plies to veh ic les: with a daptive c ruise control
Settings in the MMI
The sett in gs of the Audi braking gu ard a re per for med in
the
MM /*.
Fig. 14 3 MM I-Display :
Audi braking gua rd
S ettings rega rdin g th e sys te m an d the e arly wa rnin g ca n be
a djust ed to th e r espec tive u ser and saved in t he
MMI *.
Switching the system on and off
Press the(CA R]fu nction bu tton.
S elect Audi braking guard . Th e Audi braking guard menu
a ppe ars ==> fig. 143.
Sel ect System On to switc h th e sy stem on or Off to
s w itch the s ystem off.
Switching the early warning on and off
Press the I CA R I functi on bu tton.
Selec t Audi braking guard . T he Audi braking guard menu
a ppe ars.
- Select Early warning On to swi tch the aco usti c and
op tic al warni ng on or
Off to swi tc h the sy s tem off.
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• .___A_ d_ a --=- p_t_ i_v _e _ c_ r_ u_ i_ s _e_ c_ o_ n_t_r _o _l _____________________________________________ _
[ i] Tips
When handing over the keys to another person, the previous
settings are adopted if the Audi braking guard is activated
=> page 43 . •
A pplies to vehicles: wi th a dapt iv e cruise contro l
Driver's information in the instrument cluster
display
Braking guard brake jolt
This driver's information appears when a brake jolt has been carried
out due to an acute warning.
Braking guard off
This driver's information appears when the system has been deacti
vated via the MMI*. Furthermore the information appears each time shortly after the beginning of the journey when the system is
switched off.
This driver's information also appears when the system is not avail
able due to a malfunction or if you switch the ESP/ASR off
=> page 234. In this state the system no longer warns of a pending
collision. •