Tow AUDI A8 2012 User Guide

86 On the road
the display is replaced with a white symbol.
The saved speed remains the same .
Presetting your speed
You con preset your desired spe ed while the
vehicle is not moving.
,.. Switc h on the ignition.
,.. Pull lever into pos ition
(D ~ page 85,
fig . 84 .
... Press the lever in the 0 or 0 direction to
increase or decrease your speed .
... Re leasethelevertosavethatspeed.
This funct ion makes it possible, for example,
to save the speed yo u want before driving on
the highway . Once on the highway, activate
the cruise contro l by pull ing the lever toward
(D .
Switching the system off
Temporary de activation
... Press the brake pedal, or
... Press the lever into pos ition @ (not clicked
into place)
~ page 85, fig . 84, or
,.. Drive for longer tha n 5 minutes at mo re
t h an 5 mph (10 km/h) above the sto red
speed.
Switching off completely
... Press leve r into posi tion @ (clicked into
place), or
,.. Swit ch the ignition off.
The system reta ins the saved speed if you de ­
activate the cru ise control temporarily . To re­
sume the saved speed, release the b rake ped­
a l and pull the lever to position
(D .
Sw itch ing the ign ition off erases the saved
speed .
A WARNING
You should only return to the saved speed
if it is not too fast for the current traffic
condi tions - risk of an accident!

Audi adapt ive crui se c ontrol an d bra kin g guard 8 7
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 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 maneuvers ¢
page 93.
Adaptive cruise control and Audi braking
guard have technica l limitations that you
must know, so p lease read this section care­
fully, 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. 86 Front of the veh icle: sensors and video came ra
The areas that conta in the radar and ultrason ­
ic sensors and the v ideo camera ¢
fig. 86
must neve r be covered by stickers or other ob­
jects or obstructed w ith dirt, insects, snow or
ice that will interfere w ith the adaptive cruise
control system and Audi braking guard. For in­
formation on cleaning , refer to ¢
page 205.
The same applies for any modifications made
in the front area.
T he function of the Adaptive cruise cont ro l
system and A udi braking guard is limited un­
der some conditions.
- Objects can on ly be detected when they are
w ith in sensor range
¢page 89, fig. 89 .
-The system has a limited ability to detect
objects that are a shor t distance ahead,
off
to the side of your vehicle or moving into
your lane.
- Some kinds of ve hicles 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 a ll.
- Stationary objects¢
page 88.
-When driving throug h curves ¢ page 88.
& WARNING
Always pay attent ion to traffic when adap ­
tive cruise contro l is switched on and brak­
ing g uard is active. As the driver, you are
still respons ible for start ing and for ma in­
taining speed and distance to other ob­
jects . Braking guard is used to assist you .
The driver must a lways take action to avo id
a collis ion. The driver is a lways responsible
for braking at the co rrect time.
- Improper use of adaptive cru ise control
can cause collisions, other acc idents and
serio us pe rsonal in jury.
- Never let the comfort and conven ience
that adaptive cruise control and Audi
braking guard offer dist ra ct you from the
need to be a lert to t raff ic condi tions and
the need to remain in full con trol of yo ur
vehicle at a ll times,
- Always remember that the adaptive
cruise contro l and Audi braking guard
have limits -they will not s low the vehi ­
cle down or maintain the set d istance
when you drive towards an obstacle or
something on or near the road that is not
mov ing, such as vehicles stopped in a
traffic jam, a stalled or disabled vehicle .
I f regis tered by the radar sensors,

Audi adaptive cruise control and braking guard 89
@ is located in front o f that veh icle, the sys ­
tem wi ll not react to the stationary vehicle.
Audi adaptive cruise
control
Description
Applies to vehicles: with Audi adaptive cruise co ntrol
Fig . 8 9 Detection ra nge
What can adaptive cruise control do?
The adaptive cruise co ntrol system uses video,
radar and ultrasound . Mov ing vehicles ahead
can be r ecognized up to about 650 fe et
(200 m) away.
On ope n roads w ith no traff ic, adaptive cruise
contro l works like a reg ular cruise control sys­
tem. The stored speed is ma in tained . When
approaching a moving veh icle detected up
ah ead, the adap tive cr uise control sys tem au­
tom atically s lows dow n to matc h that vehi­
cle's speed and the n main tains t he d istance
that the driver p revio usly sto red. As soon as
the system does not detect a vehicle up
ahead, adaptive cruise control acce lerates
back up to t he stored speed.
I n stop-an d-go t raffic, adapt ive cr uise contro l
can bra ke until the vehicle stops and acce le r­
ate again under certain conditions and if this
is poss ible within the system's limits and ca­
pabilit ies
c> page 91. Adaptive cru ise cont ro l
will not make a n emerge ncy stop .
Which functions can be controlled?
When you switch adaptive cruise contro l on,
you can set the current speed as the "control speed"
c> page 89, Switching on and off.
When driving, yo u can stop cruise cont ro l
c> page 91 or change the speed c> page 90
at any time .
You can also set the dis tan ce to the object
ahead and se t the adapt ive cr uise control d riv ­
ing program
c> page 91 .
Switching on and off
Applies to vehicles: with Audi adaptive cruise control
Fig. 90 Selector lever: switching o n/off
Fig . 91 Instrument cluste r: adaptive cru ise control
You can set any sp eed between 20 mp h and
9 5 mp h (3 0 and 150 km/h).
Ind icator lamps a nd messages in the i nstru ­
ment cluster d isp lay inform yo u about t he cur­
r ent syst em stat us and sett ing s.
Switching adaptive cruise control on
... Pull the lever toward you into position (D
c> fig. 90. ACC standby appears in the in­
strument cluster display.
Setting the speed and a ctivating
regulation
... To set the current speed, press the ISETI
button c> fig . 90. The set speed is shown in
t he tachome ter @ and is also shown briefly
in th e display @
c> fig. 91 . ..,..

Audi adaptive cruise control and braking guard 91
Driving in stop-and-go traffic
Applies to vehicles: with Audi adaptive cruise control
The adaptive cruise control system also as­
sists you in stop-and -go traffic. If a previous
detected vehicle ahead s tops, yo ur vehicle will
brake to a stop, within the limits of the sys ­
tem .
.,. To resume driv ing with adap tive cruise con ­
tro l, tap the accelerator peda l or
.,. Pull the lever toward you into position @
¢ page 89, fig. 90.
(D Tips
-If adaptive cru ise contro l is active and
your vehicle does not start driving as ex­
pected after pulling the lever once, you
can start out aga in by tapping the accel­
erator pedal.
- If an obstacle is detected when your ve­
hicle starts dr iv ing, the system w ill
prompt you to take over
¢ page 92.
Your vehicle w ill drive more slowly when
starting. This may also happen in some
s ituations when there no obstacle is ap­
parent.
Interrupting cruise control
Ap plies to vehicles: with Audi adaptive cruise control
Fig. 93 Selecto r level
Requirement: adaptive cruise control must be
switched on .
Overriding crui se control
.,. To accelerate manua lly, pull the lever to­
ward you into position @and hold it there.
The message
ACC override appears. Or
.,. press the accelerator pedal. .,.
To resume cruise contro l, release the lever
or take your foot off the accelerator pedal.
Canceling cruise control while driving
.,. Move the lever into position @. The mes­
sage
ACC standby appears . Or
.,. press the brake pedal.
.,. To resume the stored speed, move the lever
into position @ .
Canceling cruise control when stopped
.,. Push the lever away from you into pos ition
@ . Th e message
ACC standby appears.
.,. To resume cruise control, press the brake
pedal and pu ll the lever toward you into po­
sition @.
A WARNING
-
Never resume the stored speed if the
speed is too high for prevailing road, traf­
fic or weather conditions.
Setting the distance
App lies to vehicles: with Audi adapt ive cr uise contro l
Fig. 94 Selector lever: setting th e dista nce
.,. Tap the switch to display the current set dis­
tance
¢ fig. 94 .
.,. To increase or reduce the distance by incre­
ments, tap the switch again to the left or
right. The distance between the two vehicles
w ill change in the instrument cluster dis ­
play.
When approaching a moving vehicle up ahead,
the adapt ive cruise control system automati­
cally brakes to match that object's speed and
then maintains the stored distance . If the ve-
hicle ahead accelerates, adaptive cruise ..,.

98 Audi lane assist
Setting the warning point and steering
wheel vibration
Applies to vehicles: with lane assist
You can adjust individual settings in the MMI.
.. Se lect: ICARI funct ion button> Car systems
control button > Driver assist > Audi lane
assist .
Setting the warning point
Early: With this setting, a warning is provided
before a wheel touches the detected lane
boundary line . The warning depends on the
angle in which the veh icle is approaching the
line. The distance at which the warning is giv­
en increases as the angle becomes sharper. If
you dr ive towa rd a bounda ry line at a very
sha rp angle, the warning will come just before
a wheel touches the line.
Medium : With this setti ng, the warn ing po int
is adapted to the course of the road, the lane
width and the speed. You wi ll sti ll be warned
if you cross slightly over a dotted line when
driving on curves.
Late : This setting has the same properties as
medium. You will only be warned once a
wheel crosses a detected line.
Setting the steering wheel vibration
The steering wheel v ibration can be set to
Low , Medium or Strong . Selecting each of the
settings will cause the steering wheel to vi­
b rate so you can check the strength of the vi­
bration in that setting.
(D Tips
Your settings are automatically stored and
assigned to the remote contro l key being
used .

Audi side assist Lane Change Assistant
Description
App lies to vehicles: with si de assist
Fig . 10 1 Sensor detection range
Fig. 102 Disp lay on the exterior mirror
Side assist he lps you monitor yo ur blind spot
and traffic behind your veh icle. W ith in the
limits of the system, it warns you about vehi­
cles that are coming closer or that are travel­
i n g with you with in sensor range
(D
c::, fig . 101: if a lane change is class ified as crit­
ical, the display @ in the exterior mirror
c::> fig. 102 turns on.
The display in the left exterior mirror provides
assistance when making a lane cha nge to t he
l eft, while the display in the right exter ior mir­
r or p rov ides assistance when making a lane
change to t he 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 crit ica l. The display
i n the respec tive mirro r turns o n, but is d im .
Aud i side assist 99
The display remains d im intentionally in the
information stage so that your view toward
the front is not disturbed .
Warning st age
If you activate the turn signal, s ide assist
warns you about veh icles that are detected
and classified as critical. The display in the re ­
spective mirror blinks brightly . If this hap­
pens, check traff ic by glancing in the rearview
mirror and over your shoulder¢
A in General
information on page 100.
@ Tips
- You can adjust the brightness of the dis­
play @¢
page 101.
-Please refer to the instructions fo r tow­
ing a trailer located in¢
page 100.

100 Audi side assist
General information
App lies to vehicles: with side assist
®
©
Fig. 103 Driving s it u at ions
A U D I
• 0
Fig . 104 Rear of th e ve hicle: pos it io n of t he se nso rs
Side assis t fu nctions at speeds above ap prox i­
ma tely 19 mph (30 km/h).
(D V ehicles that are 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 ro aches, the sooner the disp lay 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 it ical
for a lane change. All vehicles detec ted by
side assis t are in dicated by the time they en­
ter your "blind spot", at the latest.
@ Vehicles left behind
If you s low ly pass a ve hicl e tha t sid e ass ist has
dete cted ( the difference in s peed between the
vehicle and you r vehicle is less than 9 mph or
15 km/ h), the display in the exterio r mirror
turns on as soon as the vehicle enters your blind spot.
The disp lay wi ll not t urn on if you quickly pass
a vehicle that s ide assist has detected (t he d if ­
f erence in speed between the ve hicle and your
vehicle is greater than 9 mph or 15 km/h).
Functional limitations
T he radar senso rs are designed to detect the
left and right adjacent lanes when the road
l anes a re the normal width. In certain situa­
t ions, the d isp lay in the exterior mirror may
turn on even though there is no ve hicle locat­
ed in the area that is cr itical fo r a la ne cha nge.
Fo r example:
- if the lanes are narrow or if your are driving 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
cur rent lane .
- if you a re driving through a c urve . Side assis t
may react to a vehicle that is one lane ove r
from the adjacent lane .
- if side assist reacts to other objects (such as
high or d isp laced gua rd rails) .
- In poor weather conditions. The side assist
fu nctions are limited .
Do not cover the radar sensors
c::> fig. 104 with
stickers, depos its, bicycle wheels or other ob­
jects, because this wi ll affect the funct io n. Do
not use s ide ass ist when towing a trailer . For
information on cleaning, refe r to
c::> page 205 .
&_ WARNING
-Always pay a tten tion t o traffic and to the
a rea around your ve hicl e. Side a ssist can ­
no t repla ce a driver's atte ntion. The driv ­
er a lone is always respons ible fo r lane
cha nges a nd similar driving mane uvers.

102 Audi side assist
- Side assist is not active wh ile you are
making the adjus tment.
- Your settings are automatica lly sto red
and ass igned to the remote control key
being used.
Driver messages
App lies to vehicles: with side assist
If side ass ist switches off by itse lf, t he LED in
the butto n tur ns off a nd a message will ap­
pea r in the instr ume nt cl uster d is p lay:
Audi side assist : Currently unavailable. No
sensor vision
The radar se nsors' vision is affected. Do not
cover the area in front of the senso rs wi th bike
wheels, stickers, dirt or other objects. Clean
the area in front of the sensors, if necessary
c::;, page 100, fig. 104 .
Audi side assist : Currently unavailable
Side assis t ca nno t be swi tched o n tem porar ily
beca use there is a mal function (for exam ple,
the battery cha rge leve l may be too low) .
Audi side assist: System fault!
The system cannot guara ntee that it w ill de­
t e ct ve hicl es co rrec tly a nd it is sw itche d off .
The senso rs have been displaced o r a re faulty.
H ave the sy stem che cke d by an au thor ized A u­
di d eal er o r aut horiz ed Au di Servi ce Fa cili ty
s o on.
Audi side assist : Unavailable when towing .
Side assist switches off aut omatically whe n a
factory -insta lled trailer h itch is connected to
the el ectrical connector on the trailer. There is
no guara ntee the system will switc h off whe n
usi ng a retrofi tt ed traile r h itch . Do not use
side assis t when towing a tra iler .

104 Audi dri ve sele ct
surface o f the tires, which is the outer
circumference. Securing the vehicle at
the axle components, s uspension struts
or towing eyes is not perm itted because
the pressure in the air suspension struts
can change during transport. The veh icle
may not be secured suff ic iently if this
happens .
- If you are go ing to tow a trailer, you
must activate the trailer operat ion mode
¢page 199.
@ Tips
- In some models, the maximum vehicle
speed can only be reached in the
auto
and dynamic modes.
- Selecting the
dynamic mode results in
spo rty sh ifting character istics. The S
gear position engages automati cally.
- In vehicles that have dynamic steering*,
operating noise is heard when starting or
stopp ing the eng ine . Th is does not ind i­
cate a problem.
- In vehicles with sport differential*, the
dynam ic mode is deactivated whe n tow­
i ng a traile r.
Selecting the driving mode
You can choose be tween Comfort, Auto, Dy­
namic and Individual.
Fi g. 106 MM!: D rive se lect
.,. To se lect the mode, select the following in
the MMI :
I CARI function button> Comfort ,
Auto , Dynamic or Indi vidu al.
You can change the driving mode when the ve­
hicle is stationary or while driving . If traffic
permits, after changing modes, briefly take
your foot off the accelerator pedal so that the
recently selected mode is also activated for
the engine.
comfort -provides a comfort-oriented vehicle
setup and is suited for long drives on high­
ways.
auto -provides an overall comfortable yet dy­
nam ic driving feel and is suited for every day
use.
d yna mi c -gives the vehicle a sporty driving
feel and is suited to a sporty driving style .
individual -¢ page 105.
A WARNING
Pay attention to traffic when operating Au­
d i drive select to prevent potential risk of
an accide .nt.

110 Automatic Tran sm iss ion
• You may need to release the selector lever
l ock depending on which se lector lever posi ­
t ion is selected and which one you would
Like to select ¢
page 110, Selector lever
lock.
• To engage the nearest selector lever posi ­
t ion, move the selector lever forward/back
unti l you feel the first pressure point . The
selector lever will return to its original posi ­
t ion.
• To skip over one (or two) se lector lever posi­
tions, move the selector lever past the first
(and second) pressure point into the desired
pos it ion. The selector lever will return to its
origina l position.
For example, to move directly from the D se­
lector lever position to P when stopping the
vehicle, you can shift past the N and R selector lever positions.
S ele ctor l ever lock
The selector lever lock prevents you from se ­
lecting a position unintentionally, causing the
vehicle to roll. When engaging some selector lever positions, you must press the button on
the selector lever¢
fig. 116 and/or press the
brake pedal.
You must press the brake pedal to engage a
selector lever position when the engine is run­ n ing while the vehicle is stationary. The ar­
rows¢
fig. 117 indicate when you need to
press the button on the selector lever .
The selector lever does not lock if you sh ift
from D to R w ith in one second . Th is allows
you to "rock" the vehicle to free it when it is
stuck .
P- P ark
The whee ls are locked in th is position. Only
shift into park when the vehicle is stationary
¢ & .To engage the P selector lever position,
press the button on the selector lever and
shift into the P position .
You can only shift out of park when the eng ine
is running and you are press ing the brake ped­
al. Press the button on the selector lever to r
elease the parking lock and select the desired
selector lever position.
P engages automa tica lly when you sw itch the
engine off while D, Sor R is engaged o r in
manua l mode .
If you switch the eng ine off when N is engag­
ed, the transmiss ion remains in N for approxi­
mately 30 minutes and then Pis engaged .
You must use the emergency release proce­ dure to release the parking lock before towi ng
the vehicle
¢ page 113.
R- Reverse
The reverse gear is engaged in this posit ion .
Only select reverse when the vehicle is sta­
t ionary and the eng ine is running at id le speed
¢ & -To engage the R selector leve r pos ition,
press the button on the selector lever, press
the b rake pedal and move the selector lever
into the R position.
T he back-up lights turn on when you select
the R selector lever pos it ion wh ile the eng ine
. . 1s ru nning .
N -Neutral
The transm iss ion is in idle in this pos it ion . To
engage the N selector lever posit ion, press
the button on the selector lever and sh ift into
t h e N pos it ion.
If you switch the eng ine off when N is e ngag­
ed, the transmiss ion remains in N for approxi­
mately 30 minutes and then P is engaged .
You cannot se lect the N pos ition when the ig­
nition is sw itched off. When dr iv ing th rough
an automat ic car wash, first select the N posi­
t ion and then switch the engine off
¢page 204.
The veh icle cannot be locked when the selec­
tor lever is in the N position.
D - Dri ve
In this pos ition, the transmission sh ifts up
and down automatically depending on eng ine
load, veh icle speed and the dynamic shift pro -
gram (DSP) .
ll-