2013 AUDI A8 stop start

88 On the road
switched on during this stop phase. The en ­
gine will be automatically restarted when
needed.
The last Sta rt-Stop -System setti ng (on/off us­
ing the button
l(A) ,.,I) wi ll be restored when the
ignition is turned on. The LED in the
l(A) "'I but­
ton turns on when the Start-Stop -System is
switched off manua lly.
Basic requirements for the Start-Stop
mode
- The driver's door is closed .
- The driver' seat be lt is latc hed.
- T he hood is closed.
- T he veh icle must have been driven faster
than 2.5 mph (4 km/h) since the last stop.
- A trai ler is not hitched to the vehicle.
A WARNING
-Never let the vehicle roll with the engine
switched off. You could lose cont rol over
the vehicle . This can lead to a coll ision
and serious injuries .
- Th e brake booster and the steer ing sup­
port do not work while the eng ine is
switched off. More force is required to
stop and to steer the vehicle.
- To reduce the risk of injuries, make sure
that the Start-Stop-System is turned off
when working in the engine compart­
ment¢
page 89.
(D Note
Always switch off the Start-Stop -System
when driv ing th rough water~
page 89.
Starting/stopping the engine
Applies to vehicles: w ith Start -Stop -System
Fig. 88 Instrument clus ter: engine sw itche d off (s top
phase)
.. Slow the veh icle to a stop using the brake
and keep pressing the brake pedal. The en­
g in e will sw itch off. The
D] indicator light
appears in the information line in the instru­
ment cluster display.
.. When you take your foot off the brake ped ­
al, the engine restarts. The indicator light
turns off.
Additional information
The engine will switch off in the P, D, N and S
positions as well as in manual mode . In the P
pos ition, the engine wi ll also remain off if you
take yo ur foot off the brake pedal. The engine
starts again when you select another selector lever position and take your foot off the brake
pedal.
If you select the R position during a Stop
phase, the engine will start again.
Shift from D to P quickly to prevent the engine
from starting un intentionally when sh ifting
through R.
You can determine for yourself if the engine
will stop or not by reducing or increasin g the
amount of force you use to press the brake
pedal. For example, if you only lightly press
on the brake pedal in stop-and and-go traffic
or when turning, the engine will not switch off
when the veh icle is stationary. As soon as you
press the brake down ha rder, the engine wi ll
swit ch off. ..,

@ Tips
When you stop and the start-stop-system
turns the engine off, the ignition remains on. Make sure that the ign ition is switched
off before exiting the vehicle.
General information
App lies to vehicles: with Start-Stop-System
The standard Start-Stop-mode can be cancel·
led for different system-related reasons.
Fig. 89 Instrument cluster : eng ine-Stop temporar ily
u navailable
Engine will not switch off
Before each stop phase, the system checks if
certain cond itions have been met . For exam­
p le, the engine will
not be switched off in the
following situations:
- The engine has not reached the minimum
required temperature for Start -Stop-mode .
- The interio r temperature selected by the A/C
system has not been reached.
- Th e outside temperature is extremely h igh/
low.
- The windshield is being defrosted
9page 81.
- The parking system* is switched on.
- The battery charge level is too low .
- The steering wheel is sharply turned or there is a steer ing movement.
- After engaging the reverse gear.
- On sharp inclines .
The
(jj indicator light appears in the informa­
tion line in the instrument cluster display
9fig. 89.
On the road 89
Engine automatically restarts
The stop phase is interrupted in the following
situations, for example. The engine restarts
without any action by the driver.
- The interior temperature varies from the
temperature selected in the A/C system.
- The windsh ield is being defrosted
9page 81.
-The brake pedal is pressed severa l times in a
row.
- The battery charge level becomes too low .
- High power consumpt ion.
@ Tips
If you shift into the D, Nor S positions af­
ter sh ifting into
reverse, the vehicle must
be driven faster than 6 mph (10 km/h) in
order for the engine to sw itch off aga in.
Switching the Start-Stop-System on/off
manually
App lies to vehicles: wi th Start-Stop-Sys te m
If you do not wish to use the system, you can
switch it off manually.
Fig. 90 Center console: Start-Stop-System button
.,. To switch the Start-Stop-System off/on
manually, press the
l "'I button. The LED in
the button turns on when the system is
sw itched off.
@ Tips
If you switch the system off during a stop
phase, the engine will start again auto­
matically.

90 On the road
Messages in the instrument cluster
display
Applies to vehicles: with S ta rt-Stop-System
Start-S top sy stem de activated: Pl ea se re­
s ta rt engine manually
This message appears when specific condi­
tions are not met dur ing a stop phase and t he
Start -Stop -System will
not be ab le to restart
the engine.
If the D or R se lector lever posi­
t ions were engaged,
P will be selected auto ­
m atica lly. The engine must be started with
the
! START ENGIN E STOPI button .
Start-Stop system : Sy stem fault! Function
un available
There is a malfunc tion in the Sta rt-Stop-Sys­
tem . Dr ive the vehicle to an au thorized repair
fac ility for servicing as soon as possible to cor­
rect the malfunction.
Speed warning system
Introduction
The speed warning system helps you to stay
under a specified maximum speed .
The speed warning system warns you if you
are exceeding the maximum speed that you
have set . You will hear a warn ing tone when
your speed exceeds the stored value by ap­
p rox imately 3 mph (3 km/h) . An indicato r
l ig ht . (USA models)/ . (Canada mode ls) i n
the ins trumen t clus ter display also t urns on at
the same time . The ind icator light
a;m
turns off when the speed decreases below the
stored maximum speed.
Se tting a thresho ld is re commended if yo u
wo uld like to be reminded when you reach a
certain maximum speed. Situations where you may want to do so include driv ing in a country
with a general speed Limit or if there is a
specified max imum speed for winter tires .
@ Tips
Even though your vehicle is equipped with
a speed warning system, you should st ill watch the speedome
ter to ma ke s ure you
are not dr iving faster than the speed limit .
Setting the threshold
You can set, chang e and delet e the threshold
in the MMI.
• Select: I CAR I func tion button > Car sy stem s
contro l but to n > Driver a ssist > Speed warn­
ing .
You can set any threshold betwee n 20 mph
(30 km/h) and 150 mph (2 40 km/h). Se tting s
can each be adj usted in incremen ts of
5 mph
(10 km/h).
Cruise control
Switching on
The cruise con trol sys tem makes it possible to
drive at a constant speed starting at 20 mph (30 km/h) .
Fig. 91 Contro l leve r wit h set b utton
Fi g. 92 D isp lay : Se lecte d sp ee d
• Pull the lever to position@~ fig. 91 to
s w itch the system on.
• Dr ive at the speed you w is h to set .
.,. Press button @to set that speed.

Audi adapt ive crui se c ontrol an d bra kin g guard 9 3
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. This helps 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 99.
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. 93 Front of the vehicle: sensors and video came ra
The areas that contain the radar and ultrason ­
ic sensors and the v ideo camera ¢
fig. 93
must neve r be covered by stickers or other ob­
jects or obstructed with dirt, insects, snow or
ice that will interfere with the adaptive cruise
control system and braking guard. For infor­
mation on cleaning, refer to ¢
page 218. The same applies for any modifications made in
the front area.
T he function of the adaptive cru ise contro l
system and braking guard is limited under
some conditions:
- Objects can on ly be detected when they are
w ith in sensor range
¢page 95, fig. 96 .
-The system has a limited ability to detect
objects that are a shor t distance ahead,
off
t o 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 all.
- When driving through curves
¢page 94 .
- Stationary objects¢ page 94.
& WARNING
Always pay attent ion to traffic when adap ­
tive cruise control is switched on and brak­ ing g uard is active. As the driver, you are
still respons ible for starting and for ma in­
taining speed and distance to other ob­
jects . Braking guard is used to assist you .
The driver must always take action to avo id
a collision. The driver is always responsible
for braking at the co rrect time.
- Improper use of adaptive cru ise control
can cause collisions, other acc idents and
serious pe rsonal in jury.
- Never let the comfort and conven ience
that adaptive cruise control and braking
guard offer d istract you from the need to
be alert to traffic condit ions and the
need to rema in in full control of your ve­
hicle at all times,
- Always remember that the adaptive
cruise control and braking guard have
limits -they will not s low 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
mov ing, such as vehicles stopped in a
traffic jam, a stalled or disabled vehicle .
I f registered by the radar sensors,

Audi adaptive cruise control and braking guard 97
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 97, fig. 100.
(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 98.
Your vehicle w ill drive more slowly when
starting. This may also happen in some
s ituations when no obstacle is apparent.
Interrupting cruise control
Applies to vehicles: with Audi adaptive cruise contro l
Fig. 100 Selector lever
Requirement : adaptive cruise control must be
switched on .
Overriding cruise control
.,. To accelerate manually, 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. 101 Selector lever: setting the distance
.,. Tap the switch to display the current set dis­
tance
¢ fig. 101 .
.,. 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 adaptive cruise control system automati­
cally brakes to match that object's speed and
Ill-

110 Audi drive select
the drive se lect mode. Adaptive cruise control
a lso responds to the driving behavior of the
vehicle ahead in a more conservative or sporty
manner.
Engine sound*
The sound of the engine is adapted to the se­
lected mode and ranges from subtle to sporty .
Q) Note
-Make sure there is enough clearance
above and below the vehicle when park­
ing. The height of the vehicle can change
once it is parked due to temperature
fluctuations, changes to the load cond i­
tions and changes to the dr iv ing modes,
which can affect clearance .
- When transporting the vehicle on a car
carr ier, tra in, ship or by other means, on­
l y tie the veh icle down at the running
surface of the tires, which is the outer
ci rcumfe rence . Securing the vehicle at
the axle components, s uspension str uts
or towing eyes is not pe rmitted because
the press ure in the air suspension s truts
can change during transport. The vehicle
may not be sec ured s ufficient ly if this
happens.
- If you are going to tow a trailer, you must activate the trailer ope ration mode
c:> page211.
(D Tips
-In some mode ls, the maxim um vehicle
speed can on ly be reached in the
auto
and dynamic modes.
- Se lecting the
dynamic mode results in
sporty shifting characteristics. The S
gear position engages automatically.
- In vehicles that have dynamic steering*,
operating noise is heard when starting or
stopping the eng ine. This does not ind i­
cate a problem. -
In vehicles w ith sport different ia l* , the
dynamic mode is deactivated when tow­
ing a tra iler.
Selecting the driving mode
You can choose between Comfort, Auto , Dy­
namic and Individual.
Fig. 11 3 MMI : Drive select
.,. To select the mode, se lect the following in
the M Ml :
I CAR I function button > Comfort ,
Auto , Dynamic
or Individual.
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 h igh ­
ways.
auto -provides an overall comfortable yet dy­
nam ic driving feel and is suited for every day
use.
dynamic -gives the vehicle a sporty driving
feel and is suited to a sporty driving style.
individual-c:> page 111.
A WARNING ,...___ -
Pay attention to traffic when operating
Audi drive select to prevent potential risk
of an acc ident.

& WARNING
-Never engage R or P wh ile driving. It
cou ld cause a crash .
-
-Power is sti ll transmitted to the whee ls
when the engine is running at idle. To prevent the vehicle from "creeping", you
must keep your foot on the brake in all
selector lever positions except P and N
when the engine is running. Do not inad­
vertent ly press the accelerator pedal
when the veh icle is stationary . Otherwise
the vehicle will start to move immediate­ ly. This cou ld happen even if the parking
brake is activated.
- Before opening the hood, select the P se­
lector lever position and set the par king
brake. This reduces the risk of a crash. A l­
ways read and follow the applicable
warnings
¢page 226, Engine comport­
ment.
- Never get out of the driver's seat when
the engine is running.
- If you must get out of the vehicle, move
the se lector lever securely into the P po­
sit ion and apply the park ing brake .
@ Tips
-If you un intentionally shift into the N se­
l ector lever position while dr iving, take
your foot off the accelerator pedal and
wait for the engine to slow down until it is idling before you shift into Dor S.
Driving tips
The gears shift outomoticolly .
Starting from a stop
"' Press and ho ld the brake pedal.
.,. Start the eng ine
q page 83.
"' Press the button on the se lector lever and
select the D, S or R selector lever position
¢ page 115.
"' Wait a moment until the transmission
shifts. You w ill not ice a slight movement
when the gear engages .
"' Re lease the brake pedal and press the accel ­
erato r peda l¢ _& .
Aut omat ic Tr ans missio n 11 7
Stopping temporarily
"' Press the b rake pedal to stop the veh icle,
for examp le at a traffic light . Do not press
the acce lerator pedal when doing this .
"' To prevent the vehicle from rolling when
you start driving, set the parking brake
when stopp ing on large inclines¢_& .
"' The parking brake will release automat ically
and the vehicle will start mov ing once you
press the acce lerator pedal.
Parking
If the selector lever is not in the P position
when you open the driver's door, the veh icle
could roll. The message
Transmission: Car
may roll! Shift to park !
appears.
"' Press and hold the brake pedal¢ _& .
"' Set the park ing brake.
"' To engage the P se lector lever position,
press the button on the selector lever and
shift into the P posit ion ¢
page 115 .
Under certa in conditions such as dr iv ing in the
mountains or when towing a trailer, it may be
helpful to switch to manual mode temporarily
to shift
manually to adapt to the dr iving con­
ditions
¢ page 118.
On slopes, activate the parki ng brake first and
then move the selecto r leve r to the P position .
T his prevents too much st ress from be ing
placed on the locking mechanism.
& WARNING
Read and follow all WARNINGS ¢ .&. in Se­
lecting o selector lever position on
page 117.
- The vehicle can also roll when the engine
is stopped.
- Do not press the accelerator pedal when
changing the selec tor lever position
while the vehicle is stationary and the engine is running . This could result in a
crash.
- Never engage R or P while driving . It
could cause a crash.
- Power is still transmitted to the wheels
when the engine is running at idle. To ..,.

A WARNING 1=
Please note that the wheels could spin on
slick or slippery roads when kick-down is
act ive.
Transmission malfunction
[O] Transmission: please pre ss the brake ped­
al and select the position again
Press the brake pedal and select the des ired
selector lever pos it ion again. You can then
continue dr iv ing .
[O] Transmission hot: please modify driving
style
The transmission temperature has increased
significantly due to the sporty driving manner. Drive in a less sporty manner until the tem­
perature returns to the normal range and the
in dicator light switches of .
[O] Gearbox malfunction: you can continue
driving
There is a system ma lfunction in the transmis­
sion. You may continue driving. Drive to your
authorized Audi dealer or qualified repair fa­
cility soon to have the malfunction corrected.
l'§J/1;1 Gearbox malfunction: you can contin­
ue driving in D only until engine is off
There is a system malfunction in the transmis­
sion. The transmission is switching to emer ­
gency mode. If you turn the engine off, you
will not be able to select any other selector
lever positions after start ing the engine again.
Drive to your authorized Aud i dealer or quali­
fied repair facility immediately to have the
malfunction corrected.
[O] Gearbox malfunction: you can continue
driving (limited functionality)
There is a system ma lfunction in the transmis­
sion. The transmission is switching to emer­
gency mode. This mode only shifts into cer­
tain gears or will not longer shift at all. The
engine may stall. Dr ive to your authorized
Aud i dealer or qualified repair facility immedi ­
ately to have the malfunction corrected.
Automatic Transmission 119
[o];ffl Gearbox malfunction: no reverse gear
(you can continue driving)
The re is a system malfunction in the transmis­
s ion. The transmission is switching to emer­
gency mode. This mode on ly shifts into cer ­
tain gears or will not longer shift at a ll. You
cannot engage the reverse gear . Dr ive to your
authorized Aud i dea ler immediately to have
the malfunction corrected.
[O] Vehicle may roll! Cannot shift to P. Please
apply parking brake
-The parking lock was released using the
emergency release ¢
page 120. Or
- The parking brake cannot engage automati­
cally . Drive to your authorized Audi dea ler o r
qualified repair facility immediately to have
the malfunction corrected.
[O] Gearbox malfunction: Stop and shift to P
Do not continue dr iving . Select the P selector
lever position and see your authorized Audi
dealer or qualified repair facility for assis­
tance.