stop start AUDI S8 2008 User Guide

On the road -
-----------------'
Stopping the engine
-Turn the ignition key to position®~ page 130, fig. 145.
& WARNING
• Never turn off the engine until the vehicle has come to a
complete stop.
• The brake booster and servotronic only work when the engine
is running. With the ignition turned off, you have to apply more
force when steering or braking. Since you cannot steer and stop normally, this can lead to accidents and serious injuries .
• The radiator fan can continue to run for up to 10 minutes even
after you have turned off the engine and removed the ignition key.
The radiator fan can also turn on again if the engine coolant heats
up because of intense sunlight or heat build-up in the engine
compartment.
0 Note
Do not stop the engine immediately after hard or extended driving.
Keep the engine running for approximately two minutes to prevent
excessive heat build-up.•
Contro ls a nd eq uip­
ment
Starting and stopping the engine
using the Advanced Key
A pp lies to veh ic les: with Advanced Key
Starting the engine using the [ START] button
Using this button, you can switch on the ignition and start
the engine.
0
0
Fig . 146 Advanced
Key: START button
The [ START] button has a two position feature. ~ fig. 146.
Switching on the ignition
-Press the [START] button to the first position. Only the
ig nition switches on .
Starting the engine
-Depress the foot brake.
- Move the selector lever into the P or N position
~ &.
- Press the [ START] button to the second position. The
engine starts.
Vehicle care I I irechnical data

-
On the roa d
----------------
When starting a cold engine, the engine may be a bi t noisy for a
shor t w hile. This is because the hydraulic valves are working to
bring up the oil pressure . This is norma l and no cause for concern .
If the engine does not start immediately, stop cranking the engine
after 10 seconds . Wa it 30 seconds, t hen try to restart the eng ine.
& WARNING
Ne ver sta rt the engine in an en clo sed area su ch a s in your garage
with the garage door clo sed . The exhau st fumes are poi sonous!
0 Note
• Avoid high engine speeds, full gas or heavy engine loads if the
eng ine has not warmed up to its operating temperature . You cou ld
damage the engine.
• Do not try to start the engine by pu lling or pushing .
~ For the sake of the environment
Do not let your veh ic le stand and warm up . Be ready to drive off
right away. T his way, you prevent unnecessary exhaust emissions.
[ i ] Tip s
If you open th e driver 's door when the ignition is switched on , a
buzzer sounds and the message
Ignition i s on appears in the instru ­
ment cluster display. P lease switch the ign ition off .•
A pp lies to vehicles: w it h Ad vanced Key
Stopping the engine using the [S TO P] button
0
0
- Bring t he vehicle to a complete stop.
Fi g. 14 7 Advan ced
Ke y: S TOP button
-Mov e th e s elect or in to the P or N posi tion .
- Press the [STO P]
button => fig. 14 7.
Press ing the [ STOP) butto n once sw itches o ff the engi ne and the
ignition . If you press the [STOP] button again for approximately 2
seconds, the steeri ng wi ll be locked, provided that the selector lever
is in the P position
=> & .
Em ergen cy OFF fun ction
If necessary, the engine can be switched off with the selector lever
in the R, Dor S pos it io ns. To do so, step on the foot brake and press
and ho ld the [S T O P] button (vehic le speed must be be low 6 mph/
10 km/h).
& WARNING
• Never stop the engine until the vehi cle h as c ome to a complete
stop .
• The br ake boo ster and the servotroni c onl y w ork when the
engine is running . If you turn off the engine , more force will be

On the road -----------------
& W AR NIN G (c ontinu ed )
re qu ir e d to ste er or br ake the vehicle . If you are n ot prep ared , this
c ould r esult in a colli sion and serious per sonal injur y.
• For y our safet y, move the sele cto r lever to the P po sition , then
turn off the engine. Oth erw ise the vehi cle could inad vertently roll
away.
• After tu rning off the engin e, the r adi ato r fa n ca n co me on and
ru n for up to 10 minute s
-even if the ignition is sw itched off . Like­
wise , the fan could com e on if the temper ature in the engine
c omp artm ent r ais e s du e to he at build up or if you le ave the vehicle
s tanding in direc t sunligh t.
0 Note
After driving at high engine load, heat can bu ild up in the engine
compartment after you have turned off the engine. This can damage
t he engine . Let the veh icle stand and run in id le for about 2 minutes
before turning off the engine .•
Applies to vehicles: with Advanced Key
Driver's messages in the instrument cluster
Messages appear in the instrument cluster to let the
driver know if something is missing or if some thing must
be done.
No ke y identified
This message appears when you press the [ START ] button, but
t here is no remote control key insi de the vehicle or i f the system
does not recognize the key . For example, if your key is
shielded by
an object or
encased, i.e . ins ide an a lum in um br iefcase, the sig nal
from the key cannot be detected. E lectronic devices such as cell
phones can also interfere with t he rad io signa l.
Controls and equip­
ment P
re ss bra ke pedal to start engine
This message appears when you press the [ S TART] button when
starting the engine but you have not depressed the brake pedal.
En gage N or P to start engine
This message appears when you start the engine but the selector
lever is not in t he P or
N pos ition. The e ng ine can be started o nly if
the selector lever is in one of these two positions .
-.?. Key not in vehicle
This message appears together with the -:?e symbol when the
remote con trol key is removed from t he ve hicle whi le the engine is
running . This is to remind you that you should not continue your trip
without you r key .
I f the key is no longer inside the veh ic le when you turn o ff the
engine, you will not be able to switch on the ignition or restart the
eng ine. Also, you w ill not be ab le to loc k the veh icle from the
outside.
S hift t o P, other wise vehi cle ca n roll away. Doors d o not lo ck if le ver
i s not in P.
This message appears for your safety together wit h an aud ib le
warning signa l when you press the [S TO P] button but the selector
lever is not in the P posit ion and you open the driver's door. Move
the selector lever into P, otherwise the vehic le could rol l away. In
addit ion, you will not be able to lock the vehicle with either the lock
button located on the door handle or the remote control.
To engag e steering lo ck, pre ss a nd hold S TOP button
This message appears for your personal safety if you switch off the
engine and the ignition by pressing the [ S TOP ] button and then
open the driver's door. In this case, the steering will sti ll not be
locked. The stee ring wheel wi ll lock :
• If you press the [ STOP] button for longer than 1 second.
• If you lock the vehicle fr om the outside .•

On the road -----------------
Parking
To prevent a parked vehicle from rolling away, there are a
few things you should do.
When you park your vehicle, do the following
- Stop the vehicle using the brake pedal.
- Pull the switch to apply the electromechanical parking
brake.
- Move the selector lever into the
P position => &.
- Switch off the engine and remove the ignition key from
the ignition lock.
When you park your vehicle on hills, do the
following
- Stop the vehicle using the brake pedal.
- Pull the switch to apply the electromechanical parking
brake.
- If you are parking headed
downhill, turn the front wheels
toward the curb.
- If you are parking headed
uphill, turn the front wheels
awayfrom the curb.
- Move the selector lever into the
P position.
- Switch off the engine and remove the ignition key from
the ignition lock.
& WARNING
This is how you can reduce the risk of injury when leaving your
vehicle.
Controls and equip­ ment
&, WARNING (continued)
• Never park the vehicle where it can come in contact with dry
grass, spilled fuel or any other flammable materials.
• When parking on hills, always turn the wheels so that the front
wheels will first roll into the curb, if the vehicle should start to roll.
• Never allow anyone -especially small children -to remain
in the
vehicle when it is locked. Locked doors make it more difficult for
rescuers to access the passenger compartment in the event of an
emergency. Danger to life!
• Never leave children unsupervised in the vehicle. Children
could release the parking brake or move the gearshift lever out of
gear. The vehicle could start to roll away and cause an accident.
• No matter what the season is, the temperature in a parked
vehicle can reach dangerous levels.
0 Note
• Please exercise care when you park your vehicle in parking areas
with parking barriers or curbs . Parking barriers and curbs vary in
height and could damage your bumper and related components as
the front of your vehicle moves over a barrier or curb that is too high, as you park or as you back out of a parking spot. In order to be
sure that no such damage can occur, you may wish to stop short of
having the front tires of your car touch the parking barrier or curb.
• Please also exercise exceptional care when you drive up or down
steep ramps or drive over curbs or other obstacles, for which the
vehicle is not designed , because components of the vehicle close to
the ground, such as bumper covers, spoilers and suspension and
exhaust system components, may become damaged. •

___ o_ n_ t_
h _e _ ro_ a_d __________________________________________________ _
Starting off with a trailer To prevent rolling back unintentionally on an incline, do
the following:
- Keep the switch pulled and depress the accelerator. The
parking brake stays applied and prevents the vehicle
from rolling backward.
- You can release the switch once you are sure that you are
developing enough forward momentum at the wheels as
you depress the accelerator.
Depending on the weight of the rig (vehicle and trailer) and the
severity of the incline, you may roll backwards as you start. You can
prevent rolling backwards by holding the parking brake switch
pulled out and accelerating -just as you would when starting on a
hill with a conventional hand brake. •
Emergency braking
In the event that the conventional brake system fails or
locks.
- Pull the switch and continue to pull it to slow your vehicle
with the parking brake in an emergency.
- As soon as you release the switch or accelerate, the
braking process stops.
If you pull the switch and hold it above a speed of about 5 mph (8
km/h), the emergency braking function is initiated . The vehicle is
braked at all four wheels by activating the hydraulic brake system.
Brake performance is similar to making an emergency
stop~ &.
So that emergency braking is not activated by mistake, an audible
warning tone (buzzer) sounds when the switch is pulled . As soon as the switch is released
, or the accelerator pedal is depressed, emer­
gency braking stops.
& WARNING
Emergency braking should only be used in an emergency, when
the normal foot brake has failed or the brake pedal is obstructed .
Using the parking brake to perform emergency braking will slow
your vehicle as if you had made a full brake application. The laws
of physics cannot be suspended even with ESP and its associated
components (ABS, ASR, EDS). In corners and when road or
weather conditions are bad, a full brake application can cause the
vehicle to skid or the rear end to break away -risking an
accident. •
Driver messages in the instrument cluster
Caution: Vehicle parked too steep
This message appears when the parking brake is applied on an
incline that exceeds about 30%.
In this case the braking power of the parking brake may
not be
adequate
to prevent the vehicle from rolling unintentionally.
Please release parking brake
This message appears, when a gear is selected and the accel erator
pedal is depressed -release the parking brake.
Press brake pedal to release parking brake
This driver message appears when the switch to release the parking
brake was pressed. The parking brake can only be released if you
press the brake or accelerator pedal and press the switch at the
same time .
~ Parking brake malfunction !
This driver message appears together with the yellow 'Jlf symbol
when there is a parking brake malfunction.
~

_________________________________________________ O_ n_ t_h _e _ ro_ a_d _ ___._
0 Note
If the warning/indicator light (U.S. models : BRAKE, Canadian models:
) flashes in the instrument cluster, there is a brake system
malfunction. By pressing the
I CHECK] button , you can bring up a
driv er m essage which explains the malfunction in more detail. If the
message
Parking brake! Please contact workshop appears, there is
a parking brake malfunction which you should have r epaired imme­
diately by an authorized
dealership => page 30. •
Cruise control
Switching the system on
The cruise control system makes it possible to drive at a
constant speed starting at 20 mph (30 km/h).
rr- -- ...--,,-~------ -~ ----,-~
Contro ls a nd eq uip­
ment
.... S? w ;f,
Fig . 149 Control lever
with set button Fig
. 150 Display:
Selected speed
Pull the lever © to position G) ~ fig. 149 to switch the
system on.
Drive at the speed you wish to set.
- Press button
® to set that speed.
The display => fig. 150 will show the set speed . The display may vary
depending on the type of display in your vehicle. The indicator light
CRUISE (US model)/ 0 (Canadian model) will also ligh t up in the
instrument cluster .
The speed is kept constant via an engine output adjustment or active brake intervention .
& WARNING
• Always pay attention to traffic even when the cruise control is
switched on. You are always responsible for your speed and the
distance between your vehicle and other vehicles.
• For safety reasons, the cruise control should not be used in the
city, in stop-and-go traffic, on twisting roads and when road condi­
tions are poor (such as ice, fog, gravel, heavy rain and hydro­
planing) -risk of accident.
• Turn off the cruise control temporarily when entering turn
lanes, highway exit lanes or in construction zones.
Vehicle care
I I irechnical data

___ A_ d_a_ p_ ti_v _ e_ C_ ru_ is_ e_ C_ o_n_ t_ r_ o _ l ___________________________________________ _
&, WARNING (continued )
appl ied b y the s ystem when it det ects a situation when the brakes
mu st be applied.
• Alway s remember th at Ad aptive Cru ise Control has limits - it
doe s not rea ct when you dri ve toward s an ob stac le or something
e lse on or near the road th at is not mov ing , such as ve hic le s
s topped in a traffic jam , a sta lled or di sabled vehicle.
• Alway s remember th at the Ad aptive Cru ise Control cannot
detect a vehicle that i s driving to wards you in your tr affi c la ne and
that it cannot det ect narrow veh icles su ch a s motor cycles and
bicycle s.
[ i] Tips
• For sa fety reasons, the stored speed is deleted when the ign it ion
is turned off .
• When Adaptive Cru ise Control is switched on, the Electronic
Stabilization Program (ESP) is also automatically activated.
• Damage caused by accidents (e.g . if the vehic le is damaged
when parking) can affect the radar sensor settings. This can cause
the system to malfunct ion or switch off completely.
• In winter conditions, you should check the radar sensor cover
before driving to make sure it is free of ice and snow. If necessary ,
clean the area near the radar sensor
carefully => page 139, fig. 151.
• To ensure that the radar sensor is not blocked, foreign objects
(e.g. stickers, larger license plate mounts, add -on parts) must not
cover the area near the radar
sensor=> page 139, fig . 151. The area
near the radar sensor must not be painted, either .•
Ap plies to vehicles: with Ad aptive Crui se Co nt rol
How does Adaptive Cruise Control work?
Vehicles traveling ahead are detected with the aid of the
radar sensor.
Fi g. 152 Ra dar sens or
me asuremen t range
A forward -look ing radar sens or in the fro nt b umper monitors the
traffic situation ahead . Vehicles moving in your direction can be
de tec ted up to a distance of a bout 140 yards ( 130 meters) but the
Adaptive Cruise Contro l cannot detect vehicles that are stopped or
stal led, obstac les that do not move or narrow vehic les like motorcy ­
cles and
bicycles.=> fig. 152 .
Open road
When the road is clear, Adaptive Cruise Contro l works like cruise
co ntrol. The stored speed requested is main tained .
Driving in tr affi c
If you start to catch up with a vehic le in front of you, Adap tive Cruise
Control automatically slows your vehic le to a speed that will he lp
you stay a safe distance back .
If the vehicle in front acce lerates, Adaptive Cruise Control a lso accel -
erates up to the speed that you have set . .,_

_____________________________________________ A_ u_t _o _m_ a_ t_ i_c _ t_ r_ a_ n_ s_m _ is_ s_ io_ n _ ___.11111
Automatic transmission
tiptronic ® (6-speed automatic
transmission)
Gener al information
Your vehicle is equipped with an electronically controlled 6-speed
automatic transmission. Upshifting and downshifting takes place
automatically.
The transmission is also equipped with tiptronic®. It allows the
driver to shift gears
manually if desired ~ page 167. •
Driving th e autom ati c transmission
Starting the engine
- The selector lever must be in Nor P.
Starting off
-Press and hold the brake pedal.
Contro ls a nd eq uip­
ment
Fig . 183 Shift gate on
the center console:
selector lever with
release button
- Press and hold the release button in the selector lever
handle and move the selector lever from
P or N to D and
release the button
=> & .
- Wait briefly until the transmission has shifted (you will
feel a slight movement).
- Remove your foot from the brake pedal and accelerate.
Rocking back and forth to become unstuck
- Shift only between D and R when the vehicle is at a full
stop and the engine is running at idle speed.
Stopping
- Press and hold the brake pedal until the vehicle has come
to a complete stop.
Keep the brake pedal depressed so that the vehicle
cannot roll forward or backward while it is
idling=>& .
-Once stopped, do not depress the accelerator pedal to
rev up the
engine=> &.
Parking
- Press and hold the brake pedal until the vehicle has come
to a complete stop.
- Set the parking brake
firmly=> page 135, "Parking".
- Press and hold the release button in the selector lever
handle, move the selector lever into
P and then let go of
the release button
=> &. ._
Vehicle care I I irechnical data

___ A_ u_ t
_ o_ m_ a_ t_ i_ c _ t_r _a _n_ s_ m_ is_ s_io _ n ________________________________________________ _
The selector lever must be in Nor P. If one of the driving positions
is e ngaged a sa fe ty swit ch will preven t the eng ine from bei ng
started. See
also=:> pa ge 130 .
Before you move the selector lever from the P pos ition, you m ust
a lways apply the b ra ke pe dal be fore and wh ile depress in g th e
button in the hand le of the selecto r lever.
& WARNING
• Unintended vehicle movement can cause seriou s injury .
- When the selector lever is in a driving position , the vehicle
may creep , even at idle speed . Therefore do not release the
parking brake or foot brake until you are ready to move,
be cause power is tran smitted to the wheels as soon as a
driving position is engaged .
- Do not accelerate while select ing a driving position . At th is
time the engine must be at idle speed so that undue stress is
not placed on the clut ches in the transmi ssion .
- Remember: -even when stopped briefly with the automatic
transmission in
" D " or "R ", engine power is being transmitted
to the wheels . Your vehicle could "creep " forward or backward.
When stopped , keep the brake pedal fully depressed and use
the parking brake if necessary to keep the vehicle from rolling.
• If the selector lever is unintentionally moved into N while you
are driving , take your foot off the accelerator pedal and wait for
the engine to return to idle speed before sele cting a driving posi ­
tion.
• Never shift into
" R " or "P " when the vehicle is in mot ion .
• Never get out of the dri ver's seat when the engine is running .
• If you must get out of the vehicle , move the selector lever
securely into the P position and apply the parking brake firmly .
• If the engine must remain running , never have any driving posi ­
tion engaged when checking under the hood . Make sure the
selector lever has securely engaged and is locked in
"P" with the
parking brake firmly
set => page 299, "Engine compartment ".
& WARNING (continued )
Otherwise , any increase in engine speed may set the vehi cle in
motion , even with the parking brake applied . •
Selector lever positions
This sec tion des crib es the selec tor lever p ositions an d
driv ing rang es.
Fig . 184 Disp lay in the
in strument clu ster :
selector lever in pos i­
t ion D
T he sele cto r leve r posi tion engag ed ap pears next to the selector
l ever as we ll as in the instrument cluster disp lay . A lso, the current
gear engaged is show n in po sitions D and S .
P -Park
In this selector lever posit ion the t ra nsmi ssio n i s m ec hani cally
l ocked. Engage
P on ly when the vehicle is completely stopped=> &
i n "Dr iv ing th e auto mat ic tra nsmi ssion" on page 163 .
To shift in or out of position P , you must first press and hold the
b rake peda l
and then press the release button in th e selec tor leve r
handle wh ile movi ng the selector lever to or from
P . You can shift
ou t of this posi tion only wi th th e igni tio n on.
R -Reverse
Th e trans missi on wil l au to m atica lly select t he lowest gear ratio
when you shift into reverse .

Advan ce d Parkin g Sy ste m Ill
-------------~--
-Press the sw it c h P111! in t he cen ter console =:> page 170,
fig. 192 to activate the Aud i pa rking system manually.
Activation of the acoustic park ing system is confirmed by
a brief acknowledgement sound. The indicator light in
the switc h lights up.
De activation
-If yo u drive forwa rds faster t han approx. 6 mph (1 0 km/h},
or
-if you switc h the ignition off, the entire acoustic parking
assist is automatically deactivated, or
-you can press the switch P111A. in the center console
=:> page 170, fig. 192 to deact ivate the Audi parking
system. The indicator light in the switch goes out.
You have to turn on the acoustic parking assist manuall y if you wish
to park the vehicle forwards or if you wish to approach an obstacle
forwards and want a distance warning .
The range at whic h the sensors start to measure is about:
Front
Rear
W arn in g tone s side
cen ter
side
cen ter 3
ft
(0 .90 ml
4f t
(1 .20 ml
2 ft (0.60 ml
Dis tance wa rn ing is given by chimes which are generated by a
signal generator . The volume and the pitch of the chimes can be
adjusted in the MM I
=> page 180.
Mute
I n t he case of vehic les with automatic transmission, an acoustic
distance warning is discontinued when the transmission selector
Controls and equip­ ment lever is moved to the P position
. However, the system remains
active . As soon as the selector lever is moved fro m the
P pos it ion
and the vehicle approaches an obstacle, the acoustic distance
warning resumes.
Dr iving fo rw ard /b ac kw ard
Dista nce warn ing w hen driving fo rward/ backward is based on
detection of an obstac le in the range of the parking assist. As the
distance decreases, t he time interval betwee n the aud ible t ones
becomes shorter.
When the distance is less than approx .
1 ft (0.30 m), the tone
becomes cont inuous. At th is po int you shou ld stop backing up or
driving forward .
I f the distance to an obstacle re m ains the same, the vo lume of the
distance warning is gradua lly reduced after about
4 seconds (does
not app ly to the zone for the continuous tone). If you start to
approach the detected obstacle again, the distance warning will
sound at the norma l volume again.
P arking
When you se lect another gear when park ing (e .g . reverse/forwa rd),
the warning tones are temporarily suppressed, but the visua l
display remains on the MMI display . If you start approaching a
detected obstac le again, the distance warning wi ll sound at the
normal volume again .
Vi su a l displa y
The segments on t he MMI d isp lay indicate a change in the distance
between the vehicle and an obstacle . The number of segments
displayed depends on the obstac les in front of or behind the
vehic le. The c loser the vehic le comes to the obstacle, the closer t he
segments approach the
vehic le => page 170, fig. 193. When the
seg ment before last is d isplaye d, the ve hicle has reac hed the coll i­
sion zone. At this point you should stop backing up or driving
f orward
=> & . ~