2009 AUDI S8 tire pressure

Driver informati on displ ay
Ap plies to vehicles: w ith n,e pre ssu re monitoring system
Displaying tire pressures and temperatures
The current status of the tires can be displayed in MM/.
~ J '-, ' l
I
'
Tire pressure monitoring
• D isp lay tire pressures ....
I

12 :QQ AM , ·' ',!(,I:
Turn on the ignition.
Press the
!CAR) function button.
Select
Syst ems in the CAR menu.
Select
Tire pre ssure monitoring .
Fig . 27 MMI d isp lay:
T ire pressure moni­
to ring system
Fig . 28 MMI dis play:
D is play in g th e tire
p ressu re
Select Di splay tir e pr ess ures. The tire pressures and
temperatures are dis played
=> fig . 28.
Current tire pressures are shown in green and yellow numbers. The
meaning of the co lors is as fo llows:
• Green: If current tire pressure and the specified pressure are
approximately the same, the tire pressure is shown in green .
• Yellow : If current tire pressure is too low with respect to specified
pressure, the tire pressure is shown in yellow.
[ i ] Tips
• During the learning period, tire pressure and tire temperature
are not displayed . Horizontal lines --,-- are displayed for pressure
and temperature.
• The tire pressure is shown on the label located either on the
driver's side B-pil lar (visible when the door is open) or inside the fuel
filler flap.
• The tire pressure monitoring system helps the driver to keep an
eye on tire pressures. But the driver still has the responsibility for
maintaining the correct tire pressure. •
Applies to vehicles: with Tire pressure mon itor ing system
Storing tire pressures
Correct storage of specified pressure is the basic require­
men t for reliable tire pressure monitoring.
In order for the tire pressure mo nito ring system to ope rate
appropr iately, yo u have to re -save the specified pressures
whenever yo u adjust tire pressure, for example when the
load condition of your vehicle changes. Proceed as follows:
Corr ecting t ir e pres sure
- Check the pressure in the tires (including the spare tir e*). ~

-Adjust air pressure as needed in acco rdance with the
informat io n on the label located either on the driver's
side B -pillar (visible w hen the door is open), inside the
fuel filler flap and addi tionally in t he manua l.
Saving tir e pres sur es
- Tur n on the ignition.
- Press the
I CAR I funct ion button.
- Select
Systems in the CAR menu .
Selec t
Tire p ressure monitoring.
-Select Store curr. tire pres sures :::} page 44, fig. 27 .
All pressure warning indicators in the display will be canceled .
Following each intentional change in specified pressures, tire pres ­
sures must be resaved .
After the pressures are saved, the tire pressure monitoring system measures the current tire pressures and saves them as the new
specified pressures.
[ i ] Tip s
• T he t ire pressure is shown on the tire pressure label. On USA
vehic les, the tire pressure label is located on the driver's side 8 -
pillar. On Canada vehicles , the tire pressure labe l is located e ither on
the driver's side 8 -pillar or inside the fuel filler flap. The tire pressure
label lists the recommended cold tire inflation pressures for the
vehicle at its maximum capacity weight and the tires that were on
your vehicle at the time it was manufactured . For recommended tire
pressures for normal load conditions, please see chapter
=> page 330 .
• The tire pressure mon itoring system he lps the driver to keep an
eye on tire pressures. But the driver still has the responsibility for
maintaining the correct tire pressure.
Controls and equip ­
ment
Dr ive r informat ion di spl ay
• I f your vehic le is equipped with a standard spare tire *, it must be
inflated to the maximum pressure specified for the veh icle. •
Applie s to veh ic le s : with T ire pressur e mo nitoring sys tem
Changing a wheel
When you change a wheel, the new tire must be initial ­
ized.
- Turn on the ignition .
Press the
I CAR] function button.
Select
Systems in the CAR menu.
- Selec t
Tire pre ssure monitoring .
Select Initialize wh eel s:::} page 44, fig. 27.
Programming is necessary:
• After the tires have been rotated on the vehicle (inc luding use of
the spare tire*),
• I f tires with new wheel sensors are used.
A ll pressure warning and system ma lfunction indicators in the
display will be canceled.
I f a wheel change has been made, it is necessary to complete the
Initi aliz e w heel s function.
The tire pressure monitoring system is not available during the programming process and no pressure and temperature values are
displayed on the MMI display.
After you have selected the function, the new whee ls are
programmed and the actual pressures are stored. This learning
phase can take up to 20 minutes driving time. •
I • •

Driver informati on displ ay
Ap plies to vehicles : w ith n,e pre ss ure monito ring syst em
Malfunctions
A malfunction can have various causes.
Fi g. 2 9 Dis p lay :
S ystem m alfun ction
If the l · warning light in the instrument cluster flashes for approxi ­
mately one minute and then remain continuously il luminated and
additional ly the
-r J ~ fig . 29 symbo l appears in the display, the
tire pressure monitoring system is not ava ilable . Th is can have
various causes.
• If the message appears at the end of the learning process, the
system cannot recognize the wheels installed on the vehicle. This
can be because one or more wheels without a wheel sensor were
installed.
• A wheel sensor or other componen t may have failed.
• The system has detected more than 5 whe els with wheel sensors
in the vehicle, for example when carrying snow tires.
• A tire was changed but the
Initiali ze wheels function was not
activated
=:> page 45.
• Audi replacemen t parts were not used .
• If snow chains are being used, system function can be compro­
mised due to the shielding properties of the chains.
• The tire pressure monitoring system may not be available
because of a radio malfunction . • T
ransmitters with the same frequency, such as radio head­
phones in the vehicle or radio equipment, can cause a temporary
disruption of the system through excessive electromagnetic fields .
• Eliminate the interference i f possible/if you can and then re-start
the
I n itia lize w heel s function . If the warning light comes on again,
you shou ld contact your authorized Audi dealer immediately to have
the problem corrected .
• Do not use commercial ly availab le tire sealants . Otherwise, the
electrical components of the tire pressure monitoring system will
n o l onger work properly and the sensor for the tire p ressure moni ­
toring system wi ll have to be replaced by a qua lified workshop .•

ture on the windshield. The rain sensor wiper intervals depend on
t he sensi tivi ty setting as well as vehic le speed . Dur ing brief s tops,
wiper motion wil l adjust in re lation to the amount of rain on the
windsh ield .
During br ief stops, e.g. at a red ligh t, wiper mot ion wil l automa ti­
cal ly be reduced to the next lower speed . Wipers a lready turning at
low speed. cha nge to i ntermittent w ip ing.
When the ignition is turned on, the washer jets are heated .
With the low beam headlights switched on, p ull the wiper lever
towards you only
briefly t o clean the windshield. Ho lding the wiper
lever wou ld a lso engage the headlight washer system each time you
clean the w indsh ie ld and wou ld dra in the washer fluid reservoir
pr ematurely.
& WARNING
• Wiper blades are crucial for safe driving! Only when they are in
good condition are they able to clear the windows properly to
provide uncompromising visibilit y. Worn or damaged wiper blades
are a safety hazard
=> page 82 , "In stalling new wiper blade s"!
• The rain sensor is only designed to assist and support the
driver . It remains entirely the driver' s respon sibility to monitor
out side weather condit ions and to manually acti vate the wipers as
soon as rain or drizzle reduces visibility through the windshield.
• The windshield must not be treated with water-repellent mate­
rial s. They can increa se glare under poor visibility conditions such
as wetness , darkness , or when the sun is low on the horizon. In
addition , they can cau se the wind shield wipers to chatter.
0 Note
In freezi ng or near freezing conditions:
• Always check that the wiper blades are not frozen to the glass
be fore you turn the w ipe rs on. Loose n a wiper b lade wh ich is fro zen
Controls and equip ­
ment
Cl ea r vision
in place before operating the wipers to prevent damage to the wiper
blade or the wiper motor.
• Do not use the wipers to clear a frosted window. Using the
wipers as a convenient ice scraper will des troy the wiper blades .
• Before you take your vehic le to an automatic car wash, make sure
you have the w indshield w iper system switched o ff (lever in p ositi on
Ol, otherwise the windshield wiper system could get damaged in the
car was h if it should suddenly co me on .
[ i ] Tips
• Make sure th e washer fluid reservoir in the engin e compart men t
is topped off before going on a long trip . Look up=>
page 325 for
check ing and fi lling t he washer conta iner.
• I f you switch off the ignition with the windshield wiper lever still
in the inte rval wi pe positio n and t hen come ba ck a while la ter and
drive off, the rain sensor will reactivate itself after the vehicle speed
has exceeded
4 mph (6 km/h) .
• Worn or dirty windshie ld wiper b lades cause smearing which
can aff ect t he opera tion of the rai n senso r. Check the c ondi tion of
your windshield wiper b lades regu lar ly . •
Headlight washer system
The hea dligh t washer s ys tem cle ans the he adlig hts.
Opera te the win dshi eld w iper/was her sy stem @wit h th e
h eadl igh ts t urned o n by ho ld in g the lev er fo r lo nge r than
one s eco nd
~ page 80, fig. 76 .
The washer je ts extend forward out of the fron t bumper driven by
water pressure to spray the front head lights with water .
You should inspect the head lights regu lar ly (for examp le when refu -
e ling) a nd c lean o ff any solid dirt or insects from the lenses. _,.
I • •

-L~A~d~a~ p~ t~iv~ e~A~ ir~ S~u~ s ~p~ e~n~ s~io~n ~-------------------------------------------
Adaptive Air Suspension
Adaptive Air Suspension and
Damping
Description
Adaptive Air Suspension and damping can be regulated and they adapt automatically t o a request from the driver
and the driving situation at the time.
Adaptive Air Suspension is an electronica lly controlled springing
and damping system. This chassis system makes it easier on the
driver by adapting to the particular situation through imperceptible
control processes.
The
Ad aptiv e Ai r Suspen sion component regulates ground clear ­
ance depending on vehic le speed, load condition and driver input.
Accelerating to a speed above a predetermined limit wil l make the
vehic le lower itself. On the other hand, driving more slowly results
in the vehicle raising aga in at specific speeds.
The
damping component provides individual control of the
damping forces . For example, with damping c haracteristics set to
provide greater comfort, damping is set somewhat harder for a brief period only as required, for example, when going around a curve or
over rough road surfaces as well as when braking.
Settings
Adaptive Air Suspension provides the driver w ith the opportunity to
set the chassis characteristics also to their individual preference .
With the driving modes
standard, automatic and dynamic the driver
has three chassis settings available, ranging from comfort to sporty.
In addition,
lift provides a fourth mode which can be selecting for
driving over poor stretches of road=>
page 189, "Chassis Controls".
The modes are set in MMI =>
page 191.
On vehicles equipped with the s port su spen sio n Adaptive Air
Suspension -Sport*, there is generally more emphasis on a sporty
chassis setting. Settings range from comfortable to firm
=>
page 190, "Sport Chassis Contro ls".
0 Note
• Whenever you park your vehicle, always make sure there is
adequate c learance
above and below the vehic le . The height of the
parked vehicle can change as the result of temperature fluctuations,
changes in load conditi on and changes in the driving m ode (gro und
clearance).
• Mount the tie -down chains/cables over the running surface
(circumference) of the tires . Never secure the vehicle by the axle, the
suspension stru ts or the front or rear towline eye. For technical
reasons, the pressure in the suspension struts may change during
the transport and this wi ll adversely affect vehicle handling.
• To prevent damage to the vehicle underbody, remember that
you r veh ic le is not an off -road vehicle, even in the lift mode. The
ground c learance is insufficient for this type of operation.
• If you are going to tow a trai ler, you must activa te the trai ler oper ­
ation mode=>
page 792.
[ i ] T ip s
Before you can raise your vehic le using the vehicle jack (for
example, when changing a flat tire) you must activate the jacking
mode=>
page 191 . •

__________________________________________________ D _r_iv _ in_ g~ S_ a_f _e _l_ y __ llll
Important things to do before driving
Safety is everybody's job! Vehicle and occupant safety
always depends on the informed and careful driver.
For your safety and the safety of your passengers, before
driving always:
-Make sure that all lights and signals are operat ing
correctly.
- Make sure that the tire pressure is correct.
- Make sure that all windows are clean and afford good
visibility to the outside.
- Secure all luggage and other items carefully~
page 109.
-Make sure that noth ing can interfere w ith the pedals.
- Adjust front seat, head restraint and mirrors correctly for your height .
- Instruct passengers to adjust the head restraints
according to their height.
- Make sure to use the right ch ild restraint correctly to
protect children ~
page 245, "Child Safety ".
- Sit properly in your seat and make sure that your passen ­
gers do the same~
page 86, "General recommenda ­
tions".
- Fasten your safety belt and wear it p roperly. Also instruct
your passengers to fasten the ir safety belts properly
~ page 217. •
Controls and equip­
ment Safety first
Vehicle operation
What impairs driving safety?
Safe driving is directly related to the condition of the
vehicle, the driver as well as the driver's ability to concen­
trate on the road without being distracted.
The driver is responsible for the safety of the vehicle and all
of its occupants. If your ability to drive is impaired, safety
risks for everybody in the vehicle increase and you also
become a hazard to everyone else on the road ~& .There ­
fore:
Do not let yourself be distracted by passengers or by
using a cellular telephone .
NEVER drive when your driving ability is impaired (by
medications, alcohol, drugs, etc.).
- Observe all traffic laws, rules of the road and speed limits
and plain common sense .
- ALWAYS adjust your speed to road, traffic and weather
conditions.
- Take frequent breaks on long trips. Do not drive for more
than two hours at a stretch.
- Do NOT drive when you are tired, under pressure or when
you are stressed .
& WARNING
Impaired driving safety increases the risk of serious personal
injury and death whenever a vehicle is being used. •
Vehicle care Do-it-yourself service Technical data

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
Intelligent technology
Notice about data recorded by
vehicle control modu les
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders" .
Some state laws restrict the retrieva l or downloading of data stored
by EDR's that were insta lled in a vehicle for the express purpose of
retrieving data after an accident or crash event without the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehicle-related data during norma l vehicle operation for diagnost ic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehicle speed, direction, braking as well as restraint system use and performance in the
event of a crash or other condition . Stored data can only be read and
down loaded with special equipment .•
Electron ic Stabilizat ion Program (ESP)
General =nformation
The ESP improves the vehicle stability.
I~
"' " "'
- -
( ra I 5£ IA I -3, )
Fi g. 256 C ente r
co nso le w it h ES P
swi tch
ESP is designed to he lp you maintain vehic le control in situations
where the car approaches the limits of "grip", especia lly when
accelerating and cornering. ESP reduces the risk of skidding and
improves stabil ity under all road conditions .
T he system operates across the entire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP wil l also shut down .
How th e sys te m w ork s
The Anti -Lock Brake System (ABS) , Electronic Differential Lock (EDU
and the Anti-Slip Regulation System (ASR) are integrated in the e lec­
tronic stabi lization program . In addition to the data provided by
these functions, the ESP control unit requires additional measure­ ment data provided by high performance sensors . The rotational
speed of the vehic le about its vertical axis, the lateral acce leration
acting on the vehicle, the brake pressure and the steering angle are
a ll measured .

The direction in which the driver wishes to travel is determined with
t he aid of the steering angle and vehicle speed and is continua lly
compared with the actual behavior of the vehicle. If the two do not
match, for example, when the vehic le starts hydrop laning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the prob lem.
The vehicle is then stab ilized by the forces acting on the whee l
during braking. If the vehicle is oversteering (rear tends to skid out
of the turn), the brakes are mainly app lied on the wheel that is on
the outside of the curve. In the case of a vehicle that is understeering
(tendency to sl ide out of the curve), the brakes are applied at the
rear wheel that is on the inside of the curve . An acoustic signal indi­
cates when ESP brake application cuts in
~ & .
The system operates across the entire speed range in combination
with the ABS system
~ page 274 . If the Anti -Lock Brake System
(ABS) malfunctions, the ESP wi ll be out of action as well.
Ac tivat ion
When you turn on the eng ine, ESP will automatically be activated
and will perform a self -test.
The system can be activated or deactiva ted by pressing the button
~ page 270, fig. 256. The warning light comes on when the system
is switched off
~ page 18.
Normally , the ESP should always be on, however, it may be advanta­
geous to turn off the system in certain special cases when some
degree of wheel spin is desired such as :
• when driving with snow chains
• when driving in deep snow or on a loose surface (to allow the
wheels to dig in to reach firm ground)
• when trying to "rock" the vehicle free when it has beco me stuck.
T he system should be reactivated once you are no longer in such
situations .
Both the ABS and EDS systems are still functioning even if the ESP
is switched off .
Controls and equip­
ment Safety first Vehicle operation
In
te llig ent tec hn olo gy
& WARNING
The Ele ctron ic St abiliz ation Progr am i s ne ve rt h el ess s ubject to the
laws of ph ysics. It i s particularl y important t o pay attention t o th is
f ac t on wet an d slipp ery road s. It i s th ere fore important that you
alway s adapt your driving to the condition of the road and traffic
c onditio ns. Do n ot allow the in crease d sa fety p ro vi ded by t he El ec­
tronic Stabiliz ation Program sy stem to lu ll you into a ccepting
a dditional safety ri sk s.
c
Electronic differential lock (EDL)
The electronic differential lock monitors the rotation al
s p eed of the drive wheels.
G en era l not es
The elect ronic differential lock (EDU helps the car to start moving,
accelerate and c limb a gradient on surfaces providing poor or
a lmost no grip . Without EDL , this would be difficult, if not impos ­
s ib le.
How the system works
The EDL operates automatical ly. It monitors the rotational speed of
the drive wheels on an axle with the he lp of the ABS sensors
~ page 274. If a noticeable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground on
one side), the spinning w heel is braked, thereby transferring power
to the other drive wheel or wheels (all -whee l drivel. This is done up
to a speed of about 60 mph (100 km/h) . Noises from the brake
system signal that wheel spin is being control led .
Dri ving off
When driving off, always be sur e to ke ep road conditions in mind as
you accelerate. I f one drive wheel spins because it is on a surface
with less grip, gradual ly increase the pressure on the accelera tor
pedal unt il the car star ts to
move . The whee l less able to t ra nsfer
power spins. _.,
Vehicle care Do-it-yourself service Technical data