engine AUDI S8 2009 Owner's Guide

Clear vision
Lights
Switching the headlights on and off ·'t!-·
In the "AUTO " position, a light sensor automatically
s w itches t he head- and tailligh ts on and off in response to
l ight con ditio ns.
Fig . 56 Instrument
p an el: light switch
Switching on automatic headlight control
- T urn th e lig ht switch to AUTO => fig. 56 .
Switching on the side marker lights
- T urn the light switch to ~oo~.
Switching on the headlights and high beam
- T urn th e li ght swit ch to fD.
- Pu sh the high beam leve r forw ard towa rds t he instru -
m ent panel
=> page 73 .
Switching off the lights
- T urn t he light switch to 0 .
Con tro ls and eq uip­
ment
Clear vision
The headlights only work when the ignition is switched on . While
starting the engine or when switching off the ignition, the head ­
lights will go off and only the side marker lights will be on.
After starting the engine, the xenon headlights are automa tically
adjus ted to the load and a ngle of the vehic le (for example, during
acceleration , braking) . This prevents oncoming traffic from exper i­
encing unnecessary headl ig ht g la re from your xenon head ligh ts .
If the system is not operating properly, a warning symbol in the
Auto -Check Contro l is displayed => page
36.
With the side marke r lights or head ligh ts switched on, the sym bol
next to the light switch illuminates
:oo:.
Daytime running lights
• USA models : The daytime running lights wi ll come on automati­
ca lly when the ig nition is turned on and the ligh t swi tch => fig. 56 is
in the
O position or the AUTO position (only in daylight conditions).
The
Daytime running lights func tio n can be tur ned on and off in the
MMI menu
E xterior lighting => page 70 => & .
• Canada models: The dayti me ru nn ing lights wi ll come on au to ­
matically when the ignition is turned on and the light switch
=> fig. 56 is i n the
O po sitio n or the AUTO po siti on (only in dayligh t
condi tions) => & .
Automatic headligh t control
In the switch posi tion AUTO the automatic headlight cont ro l is
t urned on . The low beams are turned on automa tica lly through a
light sensor as soon as ambient brightness (e .g . when driving into a
t unnel) fa lls below a value preset at the factory . When ambient
brightness increases again, the low beams are turned off again
aut omatically =>& .
I n the
AUTO posit io n the low beams are switched off automatically
when the ignition is turned off. If the high beams were switched on,
they w ill come o n again the ne xt time the a utomatic head ligh t
~
Vehicle care I I irechnical data

Clear vision
To ensure the system works properly in winter, keep the washer jets
free of snow and remove any ice using a de-icing spray. •
Service position
The wiper blades can only be changed in the service posi­
tion.
Fig . 77 MMI display :
Windshield wipers
-At below freezing outside temperatures, make sure first
that the wiper blades are not frozen to the windshield.
- Press the
I CAR I function button.
Select
Systems in the CAR menu.
Select
Windshield wipers. The Windshield wipers menu
appears~ fig. 77.
- Select
Service position on to turn the service position on
or
off to return the windshield wiper to its original posi­
tion.
You must only attempt to change the wiper blades when the service position is activated. This way, when you are working on the wind­
shield wipers, you can avoid damaging the paint on the engine
hood.
[ i ] Tips
• You can also turn on the service position, for example, if you
want to protect the windshield from icing, using a cover.
• The service position turns itself
off, whenever you use the wind­
shield wiper lever. •
Installing new wiper blades
Wiper blades in good condition help keep the windshield
clear.
Fig . 78 Removing the
wiper blades
Fig. 79 Installing
wiper blades

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-Plug in applian ce to be u se d.
The soc ket of t he ci gare tte l ighter may be used for 12 -vo lt appli ­
ances with maximum cons umption of u p to 100 watts, such as a
fl as h lig ht, small vacuum c leane r, etc .
Before you purchase any accessories , always read and fo llow th e
i nfo rm ati on in
=> p age 384 , "Add itio nal ac ce ssor ies a nd pa rts
replacement".
& WARNING
Improper use of the cigarette lighter can cause serious injury or
start a fire .
• Be careful when us ing the cigarette lighter . If you do not pay
attention to what you are doing when you are u sing the cigarette
lighter you can burn yourself .
• The cigarette lighter and socket remain functional even if the
ignition is switched off or the ignition key is removed . Never leave
children inside the vehicle without supervision.
0 Note
• To av oid damagi ng the so ck et, o nly u se p lug s th at fit pr oper ly.
• Only use the cigarette lighter socket as a power source for elec ­
tr ical acc esso ries f or s hor t durations. Use the s ock ets in the vehi cle
when a power source is needed for longer durations .
[ i J Tips
When the engine is off and accessories are sti ll plugged in and are
on, th e vehi cle battery ca n still be draine d.•
Long center console
Ap plies to veh icles : w it h lon g cen ter co nso le
Overview
F ig . 116 Long rear
center con sole
T here a re thre e storage co mpartments in th e lon g center co nsole in
t he rear :
Left storage compartment
The lef t st orage c om partm ent co ntain s two 12 -v o lt so cke ts . The 12 -
volt sockets can be used for elect rica l accessories . T he power
co nsump tion a t a sing le plug mu st no t exceed 100 wa tts.
Center storage compartment
The ce nter st orag e compa rtmen t i s s uita ble fo r hol ding small it em s.
Right storage compartment
The right st orage co mpart ment is s uit a bl e for hold ing sma ll items.
& WARNING
The socket plus any appliances plugged into it remain functional
even if the ignition is switched off or the ignition key is removed.
Never leave children inside the vehicle without supervision. ..

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0 Note
To avoid damaging the socket, only use plugs that fit properly.
[ i] Tips
When the engine is off and accessories are still plugged in and are
on, the vehicle battery can still be drained. •
Storage
General overview
There are numerous places to store items in your vehicle.
Glove compartment
Storage compartment
Pockets in the front seats*
Compartments in the door trim panels
Compartments in the rear doors* :::::,
page 109
=:> page 11 O
=:> page 110
=:> page 111
Left side storage compartment in the :::::, page 112
trunk
- -Right side storage compartment in the :::::, page 113
trunk
Emergency warning triangle
Umbrella holder
& WARNING
=:> page 350
• Always remove objects from the instrument panel. Any items
not stored could slide around inside the vehicle while driving or
Controls and equip ­
ment
& WARNING (continued)
when accelerating or when applying the brakes or when driving
around a corner.
• When you are driving make sure that anything you may have
placed in the center console or other storage locations cannot fall
out into the footwells. In case of sudden braking you would not be
able to brake or accelerate.
• Any articles of clothing that you have hung up must not inter­
fere with the driver's view. The coat hooks are designed only for lightweight clothing . Never hang any clothing with hard, pointed
or heavy objects in the pockets on the coat hooks. During sudden
braking or in an accident -especially if the airbag is deployed -
these objects could injure any passengers inside the vehicle. •
Glove compartment
Your Owner's Literature and the media player are stored
in the lockable glove compartment.
t--------------. l
i
I • •
Fig. 117 Glove
compartment

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Warm and cold
Climate controls
Description
The air conditioner is fully automatic and is designed to
maintain a comfortable and uniform climate inside the
vehicle.
We recommend the follow ing settings:
- Set the temperature to 75 °F (+23 °C).
- Press the !AUTO
I button.
With this setting, you attain maximum comfort in the least amount
of time. Change this setting, as desired, to meet your personal needs.
The climate controls are a combination of heating, ventilation and cooling systems, which automatically reduce humidity and cool the
air inside your vehicle.
The air temperature, air flow and air distribution are automatically
regulated to achieve and maintain the desired passenger compart­
ment temperature as quickly as possible.
The system automatically compensates for changes in outside
temperature and for the intensity of the sunlight entering the
vehicle. We recommend you use the
Automatic mode=> page 117
for year-round comfort.
Please note the following:
Turn on the air conditioner to reduce humidity in the vehicle. This also prevents the windows from fogging up.
When the outside temperature is high and the air is very humid,
condensation from the evaporator may drip under the vehicle. This
is normal and does not indicate a leak. If the outside temperature is low,
the fan normally only switches to
a higher speed once the engine coolant has warmed up sufficiently.
The air conditioner temporarily switches off when you drive off from
a standstill using full throttle to save engine power.
The compressor also switches off if the coolant temperature is too
high, so that the engine can be adequately cooled under extreme
loads.
Air pollutants filter
The air pollutants filter (a combined particle filter and activated
charcoal filter) reduces or prevents outside air pollution (dust, or
pollen) from entering the vehicle.
The air pollutants filter must be changed at the intervals specified
in your Warranty
& Maintenance booklet, so that the air conditioner
can properly work.
If you drive your vehicle in an area with high air pollution, the filter
may need to be changed more frequently than specified in your
Audi Warranty
& Maintenance booklet. If in doubt, ask your autho­
rized Audi Service Advisor for advice.
Key coded settings
The air conditioner settings selected are automatically stored and
assigned to the key being used. When the vehicle is started, the air
conditioner automatically selects the settings assigned to that key.
This way every driver will maintain his/her own personal settings
and does not have to reset them manually.
If a different driver uses your key and changes the air conditioner
settings, the latest adjustments will erase and replace the settings
you have stored.
Energy management
To prevent the battery from being discharged and to restore the
balance of energy, components which require large amounts of

Warm and cold -
--------------------------------J
[ i J Tips
If the climate control system is operating in cooling mode, air flows
primarily from the outlets in the center console and in the door
pillars . To achieve adequate cooling, you should never close the
outlets completely. •
Using climate controls economically
Using the climate controls prudently can help save fuel.
When you use the air conditioner, engine power is reduced
and fuel consumption increases. To save fuel, you should
use the air conditione r only when necessary. Also please
n ote the following points:
- If you want to save fuel, activate ECON.
If you are going to drive with the windows open, use
ECON.
W For the sake of the environment
By reducing the amount of fuel you use, you also reduce the amount
of pollutants emitted into the air.•
Applie s to v ehicl es: with so lar slidi ng /tilt ing sunr oof
Solar blower fan /solar roof
With sufficient sunlight, the blower fan continues to
operate with solar energy to bring in fresh air after the
ignition has been switched off.
T he fan motor is operated by solar energy through the solar roof
after the ignition is turned off. Please make certain that vents ©
and © are open to achieve optimal ventilation=>
page 122, fig. 137.
Con tro ls and eq uip­
ment
The ventilation operates only with the sunroof closed or in the tilted
position .
If the vehicle was switched off in the recircu lation mode, the air
conditioning automatically switches to fresh air operation.
Solar operation is not activated at low outside temperatures. •
Windshield defogging/defrosting
Applie s to v ehic les: w ith windsh ield defogg er/defr oste r
Windshield defogger /defroster @
The windshield defogger removes humidity from the
windshield.
Fig . 138 Windshield
defogger switch
-Press the@ button to turn the windshield defogger on
and off~ fig . 138.
The windshield defogger works only when the engine is running.
The indicator light in the button illuminates when the windshield
defogger is turned on.
With a cold engine at outside temperatures below 41 °F (+5 °C) and
in !AUTO
l operation, the windshield defogger turns on automati ­
cally. Depending on outside temperature, the windshield is heated _,.
Vehicle care I I irechnical data

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for a maximum of 4 minutes. The temperature for the climate
control must be selected so that it is operating in the heating mode.
When selecting the program setting
@, the windshield
defogger/defroster is switched on automatically at outside temper ­
atures below 41 °F (+5 °C). Depending on outside temperature, the
windshield is heated from 2 up to a maximum of 4 minutes.
The windshield defogger is deactivate d in ECON mode .
[ i ] Tips
• If a crack forms in the windshie ld due to a foreign object (e .g . a
stone chip), the defogger/defroster is not turned on . This prevents
t he crack from spreading.
• We recommend that you locate an Audi dealership immediately
to have the windshield replaced. •
Rear window defogger [ml
Fig. 13 9 Sw itch for
r ea r wi ndow defo gger
Press t he (ffi] switch to turn the rear w indow defogger o n
and off=> fig. 139.
The rear window defogger works only when the engine is running .
The indicator light in the butto n illuminates when the rear win dow
defogger is turned on . T
he rear window defogger will switch off automatically after a short
t ime . The time the rear window defogger remains on wi ll vary
depending on the outside temperature.
At very low outside temperatures, the rear window defogger can be switched on continuously by push ing the
QW bu tton for more than 2
seconds. This remains stored unti l the ignition is switched off .
A rear window defogger that was switched on also remai ns stored
for 15 minutes after the ignition is switched off . If the engine is
r estar ted within these 15 minutes, the rear w indow defogger is also
activated, depending on outside temperature. With a vehic le that is
par ked for a short time, the rear window defogger does not need to
be manua lly activated again.
ci> For the sake of the environment
Turn the defo gger off when the rear w indow is clea r. When you save
electricity, you save fuel. •

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the outside air drops, fresh air is supp lied to the veh icle interior
again .
In the event that the windows fog up during automatic air recircula­
tion, you must press the@ button immediately.
Under certa in operating cond itions, automatic air recirculation is
switched off automatically. With outside temperatures below about
-8 °C and in the ECON mode, automatic air recirculation is limited to
15 seconds. •
Synchronization
One climate control setting for all seats .
With synchronization active, the driver's or the passenger's settings
are adopted for the other seats . All the other settings that were
made are transferred to the other seats. This includes all the climate
control settings right down to the heated seats .
If a different setting is selected at a "synchron ized seat", synchroni ­
zation is cancelled. •
Center air vent
The temperature of the air leaving the center vents can be
changed to differ from the temperature setting .
Controls and equip­
ment
Fig . 14 2 MMI di spl ay :
Ce nte r air ve nt
The air flow coming from the center vents can be adjusted to be
colder or warmer than the selected set temperatu re.
In this way you have the opportunity to have the a ir flow from the
center vents a little warmer or coo ler, depending on the time of year .
A litt le cooler in the summer and a little warmer in the winter. •
Applies to vehic les : with rear air condition in g
Rear seat operation
The rear climate con trols can be op erated from the
driver's area.
With active rear seat operation, the driver or the passenger can
operate the rear climate control system from
his/her controls. •
Applies to vehicles : w ith so lar roof
Solar operation
Depending on the solar irradiation in the vehicle, the fan
will run using solar power to keep fresh air circulating
inside the vehicle, even af ter you switch off the ignition.
- Switch the solar operation to on.
After you switch off the ignition, the fan is operated using solar
power from the solar roof. Make sure outlets
G) and © are open for
maximum ventilation =>
page 122, fig. 137.
The ventilation works on ly if the sunroof is closed or t ilted u p.
If you turn off the engine whi le the air recirculation is on, the air
conditioning automatically switches to fresh air mode.
Solar ope ration is not activated a t low outside tempe ratures .•
I • •

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& WARNING !continued)
injuries to the hands, arms and head if the driver's airbag
deploys. •
Easy entry feature
The easy entry feature makes it easier to enter and exit the
vehicle by automatically adjusting the steering wheel.
Press the button @ :::> page 128, fig. 143 to turn the easy
entry feature on or off.
When the easy entry feature is turned on (button depressed), the
steering wheel moves up to the parked position when the ignition is
turned off. After you enter the vehicle, the steering wheel moves to
the stored position as soon as you turn on the ignition. •
Ignition lock and ignition switch
Ignition key positions
The engine can be started or turned off with the ignition
key.
Con tro ls and eq uip­
ment
Fig . 144 Ignition
switch positions
Position @
The ignition key can be inserted into the ignition switch in this posi ­
tion. This automatically unlocks the steering column lock. When the
ignition key is removed, the steering column lock is automatically
locked=> &.
Ignition on G)
Turn the ignition key to this position and release it.
Starting the engine @
The engine starts with the key in this position. Major electrical loads
are temporarily turned off.
Ignition off G)
Turn the ignition key to this position and release it.
& WARNING
• Never remove the key from the ignition lock while the vehicle is
moving. The steering wheel will lock, causing loss of control.
• If you have to leave your vehicle, even for just a minute, always
remove the ignition key and take it with you. This is especially
important if you are going to leave children unattended in the
vehicle. The children could start the engine or use other vehicle
controls. Unsupervised use of vehicle controls (for example, power
windows) can cause serious personal injuries.
0 Note
• If the ~ symbol in the display blinks, there is a malfunction in the
electronic steering column lock. Follow the instructions in
=>
page 33, "Steering malfunction i".
• If the .Pc, symbol in the display blinks, there is a malfunction in
the electronic ignition lock. Follow the instructions in
=> page 33,
"Ignition lock malfunction .Pe". ..,.
Vehicle care I I irechnical data

• ..__O_ n_ t_h _ e_ r_ o_ a_ d ____________________________________________________ _
[ i J Tip s
• If you release the ignition key in positions G) , @ or G), the key
automat ically returns to pos ition @.
• If you open the 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. Please switch the ignition off .•
Ignition key safety lock
The igni tion key can only be remove d when the selector
lever is in the "P" (Park) posi tion.
After turning off the ignition , the igni tion key can only be removed
from the ignition lock when the selector lever is in the "P" (Park)
position . Af ter you have removed the key, the selector lever is locked
and cannot be moved .•
Starting and stopping the engine
Starting the engine
The engine ca n only be started with your original Audi
key.
Fig. 145 Ignitio n ke y
po sitions
Ste p on the brake.
- Move t he selector lever into P or N
~ &.
Turn the ign ition key to position 0 ~ fig . 145 -do not
depress the gas pedal when s tarting the engine .
A cold engine may sound loud after it has been started . This is due
to the hydrau lic valves building up oil pressure. This is normal and
is not a need fo r concern .
I f the engine does not start immediately, stop t rying after 10
seconds and then try to restart the engine about 30 seconds later .
& WARNING
Never sta rt or let the engine run in a confined or en clo sed are a.
Exhaust fumes from the engine contain carbon monoxide, a color ­
less and odorle ss gas. Carbon mono xide can be fatal if inhaled.
• Never leave the engine idling unattended. An unattended
vehicle with a running engine po ses a d ange r of person al injury or
theft.
0 Note
• Avoid high e ngine speeds, fast acceleration or heavy eng ine
loads while the engine is still cold. This could damage the engine.
• The eng ine cannot be s tarted by push ing or towi ng the vehicle.
c£> For the sake of the environment
To avoid unnecessary engine wear and to reduce exhaust emis ­
sions, do not let your vehic le stand and warm up. Be ready to drive
off im mediately after starting your vehicle . Maintain moderate
speed until the engine is completely warm . Remember , the engine
performs best at operating temperature. •