2009 AUDI S8 fuel

Driver information display
If the light illuminates, the electronic speed limiter may also be
malfunctioning. For more information~
page 28, "Electronic speed
limiter".
An improperly closed fuel filler cap may also cause the MIL light to
illuminate
~ page 305. •
On-Board Diagnostics
Fig. 15 Location of
Data Link Connector
(DLCl
On-Board Diagnostics monitors the components of your emission
control system . Each monitored component in your engine system
has been assigned a code. In case of a malfunction, the component
will be identified and the fault stored as a code in the control
module memory.
The MIL light may also illuminate if there is a leak in the on-board
fuel vapor recovery system. If the light illuminates after a refuelling,
stop the vehicle and make sure the fuel filler cap is properly closed
~ page 305.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnostic equipment (generic scan tool for
OBD).
In order to connect the special diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is located to the right of
the hood release
~ fig. 15. Your authorized Audi dealer or a qualified service station can inter­
pret the code and perform the necessary repair. •
Electronic speed limiter
Your vehicle may be factory equipped with tires that are rated for a
maximum speed of 130 mph (210 km/h). This is less than the
maximum speed of your vehicle. To reduce the risk of sudden tire
failure and loss of control if the vehicle is operated at excessive
speeds, your vehicle also has an electronic speed limiter. The elec ­
tronic speed limiter prevents your vehicle from going faster than the
tire speed rating. For more information ~
page 338.
If the vehicle approaches the tire speed rating, the engine control
unit will turn off the fuel injectors. You will notice an immediate loss
of engine power and a drop in road speed.
If the engine control unit receives faulty vehicle road speed signals ,
the Malfunction Indicator Lamp (MIU will illuminate. If this
occurs , contact the nearest authorized Audi dealer for assistance.
& WARNING
Always observe the posted speed limits and adjust your speed to
suit prevailing road, traffic and weather conditions. Never drive
your vehicle faster than the maximum speed rating of the tires installed. •
Auto Check Control
Introduction
The Auto -Check control monitors the function of certain vehicle
features and components. It simply makes sure these features and
components are working properly . The Auto -Check control works as
long as the ignition is on, as well as whenever the vehicle is driven .....

Dipstick reading checks OK
-If the oil pressure warning symbol "t=:7: starts flashing
again even though the engine oil level checks OK on the
dipstick,
do not continue driving and do not let the
engine run in idle.
Instead, contact your authorized Audi
dealer for assistance.
[ i] Tips
• The engine oil pressure symbol ~ is not an indicator for a low
engine oil level. Do not rely on it . Instead, check the oil level in your
engine at regular intervals, preferably each time you refuel, and
always before going on a long trip .
• The yellow oil level warning indication .: requires oil refill or
workshop service without delay. Do not wait until the red oil pres­
sure warning
~ starts to flash before you respond to the low oil
level warning . By then, your engine may already have suffered
serious damage. •
Steering malfunction i
If there is a malfunction in the electronic steering column
lock, the steering cannot be unlocked.
If the i symbol in the display blinks, there is a malfunction
in the electronic steering column lock. An additional driver
message can also be displayed by pressing the [
CHECK]
button:
Do not drive vehicle: Steering defective
- Contact your nearest authorized repair facility.
- Do
not tow your vehicle.
Controls and equip ­
ment
Driver information display
& WARNING
Your vehicle must not be towed in the event of a malfunction in the
electronic steering column lock because it cannot be steered due
to the locked steering. If it is towed with the steering locked, there
is the risk of an accident. •
Ignition lock malfunction ~
A malfunction in the ignition lock must be repaired imme­
diately.
If the -Pe symbol in the display blinks, there is a malfunction
in the electronic ignition lock. An additional driver message
can also be displayed by pressing the [
CHECK] button:
Ignition lock defective. Contact workshop !
- Do not turn the engine off.
-Drive immediately to an authorized Audi dealer to have
the malfunction corrected.
If there is a malfunction in the electronic ignition lock, the ignition
cannot be turned off. Drive immediately to an authorized Audi
dealer to have the cause of the malfunction corrected.
If your vehicle has a Conv eni enc e key *, th e n you should not use the
I STOP I button to shut off the engine. You will not be able to start the
engine again once th e ignition is switched off. •
I • •

Driver information display
Yellow symbols
A yellow symbol means WARNING.
Fig. 18 Display: low
fuel level warning
(priority 2)
Yellow symbols indicate a priority 2 malfunction -Warning!
When a y ellow warning symbol appears,
one warn ing ton e sounds.
A driver message appears as well to explain the malfunction in more
detail. The dr iver warning goes out after about
5 s e conds, bu t it can
be brought up again at any time by pressing the [
CHECK I button .
Check the displayed function as soon as possible . If
more than one
priority 2 malfunction is detected, all symbols will appear one after
the other for about
2 seconds .
Yellow symbols mean :
Worn brake pads
Electromechanical
parking brake
=> page 34
=> page 136
Check engine oil level => page 35
=> page 313
Engine oil sensor malfunction => page 35
Low fuel level => page 35
Windshield washer fluid => page 35
level low
Battery voltage
=> page 36
-
II Battery in remote control key => page 48
Convenience key * => page 133
Key not in vehicle
USA models: => page26
Defect ive brake light
Canada models: => page26
Defective brake light
Defective light bulb
=> page26
Engine speed limitation* => page 35
-
IIAdaptive Light* defective => page 36
Dynamic headlight range => page 36
control defective
Defect ive light -/rain sensor
=> page 36
Tire pressure monitoring sys-=> page 43
tern*
Loss of air pressure
-Tire pressure monitoring sys -=> page 46
tern*
ll system not ava ilable
•
Worn brake pads r
Brake pads!

If the warning light illuminates, immediate ly contact your autho ­
ri zed Aud i dealer or qualified workshop to have a ll brake pads
inspected . On USA models the warning light
.1 comes on together
with the warni ng light
BRA KE. Both set s of brake pads on an axle must
a lways be replaced at the same time .
& WARNING
Driving with bad brakes can cau se a colli sion and serious personal
injury.
• If the warning light and the warning light
BRAKE11 with the
mes sage Brake pads ! come s on in the in strument clu ster display ,
immediately conta ct your authorized Audi dealer or qualified
workshop to have all brake pads checked or replaced if nece ssary .•
Checking the engine oil level ~
.... ,. Plea se check oil le vel
When the symbo l illuminates, chec k the eng ine oi l leve l as so on as
possible=>
page 313 . Add oil if necessary=> page 374 . •
Engine oil sensor defective
~ Oil level ! sen sor defective
If the symbo l il luminates, contact your authorized Audi dea ler and
have the oi l sensor inspecte d. Until you have this done, check the o il
level each time you refuel just to be on the safe side=>
page 373. •
11 BRAK E: USA mode ls on ly
Controls and equip ­
ment
Driv er information display
Ap plies to vehic les: wit h eng ine s peed limita tio n
Engine speed limitation
!-1 Engine speed maximum XXXX RPM
The _-symbo l illuminates when there is an engine control malfunc ­
t io n. The indica to r light "in the instrument clus te r also illumi ­
nates . The engine speed is limited to the speed displayed in the
driver info rmation system . Keep in mind that the engine speed wil l
not e xceed the va lue d isplayed in the dr ive r info rm ation system, fo r
examp le when downshifting.
Please go to an au thorized Audi deale r or other qua lif ied workshop
to have the ma lfunction repaired .•
Fuel supply too low l
A Please refuel
When the symb ol i llu minates, this means there are abo ut 2.4
gallons
(9 l itres) of fuel left in the fuel tank . Time to refuel.
=>
page 304 .
If the symbo l lig hts up, eve n w hen there is ample fuel in th e tank,
and the text
Tank system malfunction ! Conta ct workshop appears
i n the d isp lay, t here is a fault in th e sys tem. C ontac t a q ua lified work ­
shop to have the fault rectified .•
' Windshield washer fluid level too low ~
Plea se top up washe r fluid
If t he symbo l illum inates, add windshie ld washe r fluid to the washe r
system and a lso to the headlight washer system=>
page 325. •
I • •

Driver informati on displ ay
The speed warning symbol 8 (USA models)/ 0 (Canada models) will
appear briefly in the display when you release the button to indicate
that the maximum speed has been stored successful ly .
The maximum speed remains stored until it is changed by pressing
t he button again briefly or unti l it is deleted by a lengthy push on the
button. •
Speed warning 2: setting a speed limit
Warning threshold 2 is set, changed and deleted in MM/.
t _i•,,( '1
Instrument cluster
• Speed warning
I .

12:QQAM
i
'
@
\_:'.' '' :, ) ..
Fig. 20 MMI d ispl ay :
Set w arning thr esho ld
2
Switching sp eed warning on and off
- Press the (CARI fun ction button .
- Select
Systems in the CA R menu.
- Select
Instrument cluster . The Instrument cluster menu
appears=> fig. 20 .
- Select Speed warn ing
On to switc h on the warning
thresho ld or
Off to tur n off the warning th reshold.
Setting and adjusting the warning thr eshold
- Press the (CARI function butto n.
- Select
Systems in the CAR menu. -
Selec t
Instrument clu ster. T he In strument clu ster menu
appears.
- Selec t th e seco nd item in the
Speed warning menu. The
submenu
Speed threshold appears=> fig. 20.
- Set the warning th reshold you want.
Warning threshold 2 can only be set in a speed range from 20 to
150 mph (30 to 240 km/h). •
Trip computer
Introduction
The trip computer gives you information on current and
average fuel mileage, average speed, fuel range and
driving time.
F ig . 2 1 Trip co m pute r
d is pl ay : Ave ra ge fuel
mil eag e
The fol lowing driving information is continuously evaluated by the
trip computer and can be displayed sequentially in the instrument
cluster display .
Fuel range
The estimated cruising range in miles (km) appears in the display .
T his tells you how far your vehic le will be ab le to travel on the _.,

current tank of fuel and with the same driving style. The display
changes in increments of 6 miles (10 km).
The cruising range is calculated based on the fuel consumption for
the last 18 miles (30 kml. If you drive conservatively, the cruising
range will increase.
Average fuel mileage
The average fuel economy in MPG (1/100 km) since you last c leared
the memory appears in this display . You can use this display to
adjust your driving technique to achieve a desired mileage.
Current fuel mileage
The instantaneous fuel consumption in miles per gallon (1/100 km)
is shown in this display. You can use this display to adjust your
driving technique to achieve a desired mileage.
Fuel consumption is recalculated at intervals of 33 yards (30
metres). When the vehic le is sta tionary, the most recent fuel
consumption is displayed.
Average speed
The average speed in mph (km/h) since the last time the display was
reset appears in the display.
Elapsed time
The length of time that you have been driving since you last reset
the memory appears in this display.
[ i ] Tips
• Fuel consumptions (average and current) , range and speed are
displayed in metric units on Canad ian models .
• All stored values wil l be lost if the vehicle battery is
disconnected .•
Con tro ls and eq uip­
ment
Driver information display
Memori es
The trip computer is equipped with two fully automatic
memones.
Fig . 22 Trip computer
display: memory level 1
You can switch between the trip computer 1 and 2 by pressing the
Reset button
@ ~ page 40, fig. 23.
You can tell which memory level is currently active by the number in
the display ~ fig . 22. The data from the single -trip memory
(memory level 1) is being displayed if a
1 appears . If a 2 is shown ,
then the data from the total -trip memory is being disp layed
(memory level 2).
Single-trip memory (Trip computer 1 )
The single-trip memory stores the trip information from the time the
ignition is turned on until it is turned off. If the trip is continued
within 2 hours from the time the ignition was turned off, the new
data will be included in the calculation of the current trip informa­
tion. If the trip is interrupted for
more than 2 hours the memory is
reset automatically.
Total-trip memory (Trip computer 2)
Unlike the single -trip memory, the total -trip memory is not reset
automatically . This permits you to evaluate your driving data for the
entire period between manual resets .•
Vehicle care I I irechnical data

Driver informati on displ ay
Operation
The trip computer is controlled by two switches on the
windshield wiper lever.
N co
"' w ;g
F ig . 23 W inds hield
w ip er l ever : c on trol s
fo r the t rip com puter
Push the function selecto r switch up or down @
=> fig . 23. This will cause t he five distinct trip c ompu ter
functions to be displayed o ne after another.
The trip computer only operates when the ignition is on. When you
turn on the ignition , the function that was in use when you last
turned the ignition off will be displayed .
In addition to the trip computer information (memory level 1 or 2),
navigation information and Adaptive Cruise Control * information
can be displayed. To switch the display between the different
systems, tap the Reset button
© briefly.
S ett ing values t o ze ro
To delete
o ne current value from the trip computer , se lect the
desired funct ion and press the Reset button
@ for at least one
second. The following values can be set to zero
indi vidu ally using
t he Reset button:
• elapsed time
• average fuel mi leage
• average speed In addition
,
all the values in the single-trip or the total -trip memory
can be de leted simultaneous ly .
Ii ] Tips
All stored values will be lost if the vehicle bat tery is disconnected .•
MMI settings
Basic settings for the trip computer can be made in the
MM/.
F ig . 2 4 MMI display :
Trip co m put er
Setting values to zer o
- Pressthe (CAR )function button.
- Select
Syst em s in the CAR me nu.
- Select
Instrum ent clust er.
- Select Trip computer 1 or Trip computer 2.
- Select Reset to delete all the values in the memory
~ fig. 24 .
Displaying and hiding driver information
- Pressthe (CAR )fu nct io n butto n.

-Select System s in the CAR menu .
- Selec t
Instrument cluster .
-Select Trip computer 1 or Trip computer 2 .
-Select, for examp le, Fuel range On to turn on the display
or
Off to turn the disp lay off.
All values in the single -trip or the total -trip memory can be reset to
zero simultaneously in MMI. In addition you can determine what
driving information from the trip computer should be shown in the
instrument cluster display. If one of the pieces of driver information
is turned off, that driver information will not be shown in the display .
The information will continue to be calcu lated by the trip computer
and can be turned back
on at any time. •
Tire pressure monitoring system
Applies t o vehi cle s: with n re pre ss ure moni toring sys te m
General notes I)
Each tire, including the spare (if provided}, should be checked
month ly when cold and inflated to the inflation pressure recom­
mended by the vehicle manufacturer on the vehicle placard or tire
inflation pressure label. (If your vehicle has tires of a different size
than the size indicated on the vehicle placard or tire inflation pres ­
sure label, you should determine the proper tire inflation pressure
for those tires.}
As an added safety feature, your vehicle has been equipped with a
tire pressure monitoring system (TPMSl that illuminates a low tire pressure tellta le when one or more of your tires is significantly
under-inflated . Accordingly, when the low tire pressure te lltale i llu ­
minates, you should stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving on a significantly
under -inflated tire causes the tire to overheat and can lead to tire
Controls and equip ­
ment
Dr ive r informat ion di spl ay
failure . Under -inflation also reduces fuel efficiency and tire tread
life, and may affect the vehicle's handling and s topping ability.
Please note that the TPMS is not a substitute for proper tire mainte ­
nance, and it is the driver 's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the leve l to trigger
illumination of the TPMS low tire pressure te lltale.
Your vehic le has a lso been equipped with a TPMS malfunction indi­
cator to indicate when the system is not operating proper ly. The
TPMS ma lfunction indicator is combined w ith the low ti re p ressure
tel ltale . When the system detects a malfunction , the telltale wil l
flash for approximately one minute and then remain continuously
il luminated . This sequence will cont inue upon subsequent vehicle
start -ups as long as the malfunction exists.
When the ma lfunction indicator is illuminated, the system may not
be able to detect or signal low tire pressure as intended . TPMS
mal functions may occur for a variety of reasons, including the
insta llation of replacement or alternate tires or wheels on the
vehic le that prevent the TPMS from funct ioning properly. A lways
check the TPMS malfunction tellta le after replacing one or more
tires or whee ls on your vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to continue to function
properly. •
Applies t o vehic les : w ith Tire press ure mon itoring sy stem
Introduction
The tire pressure monitoring system moni tors air pressure
in all four roa d wheels and the spare tire* while the
vehicle is moving.
As soon as the tire pressure monitoring system senses a significant loss of air pressure in one o r severa l tires, text messages and yellow
symbo ls appear in the instrument cluster display to alert the driver.
The L warni ng light in the instrument cluster comes on when the
tire is significantly underinflated
=> page 20. _,,
I • •