2008 AUDI S6 fuel cap

Inst rum ent s a nd warning /indi cato r li ghts
gallons (7 -9 liters) of fuel left . This message is meant to remind you
t o
r e fu el.
The to tal tank capacity of your vehicle is listed in:::, page 363.
0 Note
Never run the tank completely dry . An irregular supply of fuel can
cause engine misfiring and fuel could enter the exhaust system . The
cata lytic converter could then overheat and be damaged .•
[ C HECK] button
You can perform different functions with this button.
Fig . 5 C HECK b utton in
th e i nstru ment cluste r
The [ CHECK I button performs the following functions :
Swit c h in g on the c lock a nd odom ete r
With the ign ition turned off, the odometer reading and the digital
clock with date display can be switched on for about 30 seconds by
pressing the
( CHECK ] button~ fig . 5.
St arting th e Auto -C hec k seq uen ce
The Auto-Check system:::, page 30 constantly monitors certain ind i­
vidual functions and compon ents of th e vehicle when the ignition is
turned on and when the vehicle is mov ing. With the ignition turned on, you can start the
"Auto-Check
sequence" by pressing the
I C HECK ] button. You can perform an
Auto-Check sequence when the vehic le is s tationary and the igni tion
is turned on or when the vehicle is moving not faster than 3 mph
(5 km/hl.
Ca lling up th e dri ver inform atio n
A yellow or red symbo l appears in the instrument cluster display,
usually with a driver message. The driver message display disap ­
pears after about 5 seconds. The driver message can be displayed
again by briefly pressing the
( C HECK ] button.
Settin g th e s pee d w arn in g
By pressing the [ CHECK] button briefly, you can set threshold 1 of
the speed warning while you are driving:::,
page 39. By maintaining
pressure on the
[ CHECK] button, you de lete the warning
threshold. •
Instrument cluster illumination
The basic brigh tness of the illumination for the instru ­
ments, the center console and the display can be
adjusted.
F ig . 6 Inst rum ent
c luste r illumin ati on
Press the"+" button to increase the brightness d uring the
hours of darkness . ..,.

Instruments and warning/indicator lights
For more information about the ESP=> page 258. •
Airbag system
~ (USA models) / !_q· (Canada models)
This warning/indicator light monitors the airbag and the
tensioner systems.
The I (USA mode ls) t!l (Canada models) warning light illuminates
for a few seconds each time you switch on the ignition .
If the m (USA models)
t!.! r (Canada models) warning light does not
go out, or if it illuminates while you are driving, or if it starts to blink,
then there is a malfunction somewhere in the system. If the light
does not illuminate when you switch on the ignition, this also
means there is a malfunction.
& WARNING
If you have a malfunction in the airbag system, contact your autho­
rized Audi dealer immediately. Otherwise the airbag or the belt
tensioner may not work properly in an accident . •
Tire pressure monitoring system -telltale
indicator lamp
J
The warning/indicator light appears in the event of a
significant loss of air pressure.
The i warning/indicator light il luminates for a few seconds after
the ignition is turned on as function check and then goes out.
If the .., symbol appears, pressure is too low in at least one tire.
When the system detects a malfunction, the warning/indicator light
wil l flash for approximately one minute and then remain continu­
ously illuminated . This sequence wi ll continue upon subsequent vehicle starts up as long as the malfunction exists. Contact your
authorized Audi dealer and have the malfunction corrected.
For more information =>
page 44. •
Turn signals ¢ ¢
The indicator light blinks when you use either turn signal.
Whenever you use the left¢ or the right¢ turn signal, the indicator
light blinks . When you use the emergency flashers, both indicator
lights flash.
If one of the turn signa l light bu lbs burn out, the turn signal wil l
blink twice as fast as normal. •
Malfunction Indicator Lamp (MIL) U
The Malfunction Indicator Lamp (MIL) is part of the On-Board Diag­
nostic (08D Ill system . The symbo l lights up when the ignition is
turned on and will turn off after the engine has started and has
settled at a constant idle speed. This indicates that the MIL is
working properly.
The warning light il luminates when there is a malfunction in the
engine electronic system. Contact your authorized Audi dealer and
have the malfunction corrected.
An improperly closed fuel filler cap may also cause the MIL light to
illuminate
=> page 293 .
For more information => page 29. •

Digital speedometer
Fig. 11 Display: Digital
speedometer
Current speed appears in the display . Speed is shown in 1 mph
measures (USA models) or 1 km/h measures (Canada models).
You can switch the display from miles to kilometers and vice versa
via the MMI. •
Open door or trunk lid warning
The pictogram alerts you when doors or the rear lid have
been left open.
., ., N N t1. ;g
Fig . 12 Display: open
door or rear
lid
warning
With the ignition switched on, the open door or rear lid warning illu ­
minates when at least
one door or the hood or the trunk lid is not
Con tro ls and eq uip­
ment
Driver information display
closed. The symbol also shows you which door(s) or lid is not
closed.
In the illustration=> fig. 12 it is the driver's door, the left rear door
and the rear lid. As soon as all the doors, the hood, the rear lid and
the fuel filler cap are properly closed, the door and rear lid warning
turns off and the Driver Information System functions selected are
displayed again .•
Defective light bulb warning
The defective light bulb warning tells you when a vehicle
light bulb has become defective.
Fig. 13 Display: defec­
tive light bulb warning
The defective light bulb warning monitors the function of the light
bulbs . If a defective light bulb is detected, or if a light bulb has
burned out, a yellow symbol appears as well as a pictogram in which
the defective light bulb is shown=> fig. 13.
Defective brake light
(USA models)/ (Canada models)
If the symbol illuminates, a brake light has failed. The burned out
light is shown in the pictogram.
Defective bulb L.
If this symbol 'illuminates, a turn signal (front or rear), a headlight,
the backup light, a fog light or a rear fog light has failed . _,,
Vehicle care I I Technical data

0 Note
If you disconnect the battery terminals, no calculations can be
made for the service interval display during this time and no service
reminder will appear. Remember that observing the proper service
intervals is vitally important to extending the life of your vehicle,
particularly the engine , and maintaining its value. Even if the
mileage driven is low, the maximum period of one year from one
service to the next must not be exceeded. •
On-Board Diagnostic system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIU -in the instrument cluster
=> page 17, fig. 7 is part of the On-Board Diagnostic (OBD II) system.
The warning/indicator light illuminates when the ignition is
switched on and goes out after the engine starts and the idle has
stabilized. This indicates that the MIL is working properly.
If the light does not go out after the engine is started, or illuminates
while you are driving , a malfunction may exist in the engine system .
If the light starts flashing, the catalytic converter could be damaged.
Continue driving
with reduced power (avoiding sustained high
speeds and/or rapid accelerations) and have the condition
corrected. Contact your authorized Audi dealer.
If the light illuminates , the electronic speed limiter may also be
malfunctioning . For more information =>
page 30, "Electronic speed
limiter".
An improperly closed fuel filler cap may also cause the MIL light to
illuminate
=> page 293. •
Contro ls and eq uip­
ment
Driver information display
On -Board Diagnostics
Fig. 16 Location of
Data Link Connector
(DLC)
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 293.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnostic equipment (generic scan tool for
OBDl.
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. 16.
Your authorized Audi dealer or a qualified service station can inter ­
pret the code and perform the necessary repair .•
Vehicle care I I irechnical data

When this symbol 5' illuminates for the first time, the fuel reserve
in your vehicles is still about 2 Gallons (7 to 9 liters}. Refuel as soon
as possible~
page 292.
If the symbol lights up, even when there is ample fuel in the tank,
and the text
Tank system malfunction! Contact workshop appears
in the display, there is a fault in the system . Contact a qualified work ­
shop to have the fault rectified .•
Battery voltage LJ
If battery power drops below a specified level, idling current
management starts by switching off electrical loads. The driver
message
Power-saving mode activated is shown in the display.
If the battery's state of charge is not in the optimal range, the
U
symbol is shown in the display and the driver message Low battery
charge: battery will be charged while driving
appears .
While this driver notification is displayed, you have to be prepared
for limited starting capability.
Driver message appears and goes out again
If this driver message appears after the ignition is turned on or
while driving and it goes out again after a while, the battery has
been adequately recharged.
Driver message appears and does not go out again
If this driver notification appears after the ignition is turned on or
while driving and does not go out again, the battery's state of
charge is not in the optimal range. Starting capability is restricted.
Have the battery checked by an authorized Audi dealer as soon as
possible. •
Worn brake pads ... 1
C Brake pads!
Controls and equip ­
ment
Driver information display
If the symbol illuminates, contact your authorized Audi dealer to
have the front brake pads inspected (on that occasion have the rear
brakes inspected as well to be safel. •
Headlight range control defective
, Headlight range control defective
If the symbol illuminates, the dynamic headlight range control is no
longer working properly . Have the system checked and repaired at
your Audi dealer. •
Engine oil level r.
' Please check oil level
When the symbol illuminates, check the engine oil level as soon as
possible ~
page 301. Top off the oil at your earliest opportunity
~ page 302. •
Engine oil sensor defective ~1 .•
~ Oil level! sensor defective
If the symbol illuminates, contact your authorized Audi dealer and
have the oil sensor inspected. Until you have this done, check the oil
level each time you refuel just to be on the safe side~
page 301. •
Applies to veh ic les: w ith Adaptiv e Lig ht
Adaptive Light defective 1
' Adaptive Light defective
When this symbol .... illuminates, it means that Adaptive Light is
defective. Go to an authorized dealership to have the headlights or
the control unit for the Adaptive Light repaired.•
I • •

[ i ] Tip s
• In the case of an intentional loss of air pressure, for example,
when re -adjusting tire pressure, this has to be stored again after ­
wards :::::,
page 45.
• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambient air temperature.
• The ye llow symbol disappears, when the tire pressure is
corrected and the new pressure is stored in the system=:>
page 45.
• After changing a wheel or rep lacing a wheel with the spare tire
you have to adjust the tire pressures on all wheels . In addition, you
must then initialize the new tire pressures in the tire pressure moni ­
toring system=:>
page 46. •
Storing tire pressures
Correct storage of specified pressure is the basic require ­
ment for reliable tire pressure monitoring.
Fi g. 27 Car: Tire pres ­
s ur e m onit oring
syste m
In order for the tire pressure monitoring system to operate
appropriately, you have to re -save the specified pressures in
the MMI whenever you adjust tire pressures, for example
when the load condition of your vehic le changes. Proceed
as follows :
Controls and equip ­
ment
Dr ive r informat ion di spl ay
C orr ec ting tir e pr essur e
Check the pressure in the tires.
- Adjust air pressure as needed to comp ly with t he infor­
mation on the label located either on the driver's side 8-
pillar (visible when the door is open) or inside the fuel
filler flap.
Sav ing t ire pressur es
- Turn o n the ignition .
- Press the
I CAR I function button.
Select
System s in the CAR menu.
Select
Tire pressure mon itor ing .
Select Store curr . tire press ures~ fig . 27.
All pressure warning indicators in the disp lay 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 ] Tips
• The tire pressure is shown on the tire pressure label. On USA
vehicles, the tire pressure labe l is located on the driver's side B ­
pillar. On Canada vehicles, the tire pressure label is located either on
the driver's side B -pillar or inside the fuel filler f lap . T he 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 317. .,.
I • •

........ _o_ r_iv _i_ n""' g::;._ S_ a_f _e _ly =---------------------------------------------------
& WARNING
Improperly stored luggage or other items can fly through the
vehicle causing serious personal injury in the event of hard braking or an accident. To help reduce the risk of serious personal injury:
• Always put objects, for example, luggage or other heavy items
in the luggage compartment.
• Always secure objects in the luggage compartment using the
tie-down eyelets and suitable straps.
& WARNING
Heavy loads will influence the way your vehicle handles. To help
reduce the risk of a loss of control leading to serious personal
injury :
• Always keep in mind when transporting heavy objects, that a
change in the center of gravity can also cause changes in vehicle
handling:
-Always distribute the load as evenly as possible.
- Place heavy objects as far forward in the luggage compart-
ment as possible.
• Never exceed the Gross Axle Weight Rating or the Gross
Vehicle Weight Rating specified on the safety compliance sticker on the left door jamb. Exceeding permissible weight standards
can cause the vehicle to slide and handle differently.
• Please observe information on safe driving~
page 192.
& WARNING
To help prevent poisonous exhaust gas from being drawn into the
vehicle, always keep the rear lid closed while driving.
• Never transport objects larger than those fitting completely
into the luggage area because the rear lid cannot be fully closed.
& WARNING (continued)
• If you absolutely must drive with the rear lid open, observe the
following notes to reduce the risk of poisoning :
- Close all windows,
- Close the power roof*,
- Open all air outlets in the instrument panel,
- Switch off the air recirculation,
- Set the fresh air fan to the highest speed.
& WARNING
Always make sure that the doors , all windows, the power roof*
and the read lid are securely closed and locked to reduce the risk
of injury when the vehicle is not being used.
• After closing the rear lid, always make sure that it is properly
closed and locked .
• Never leave your vehicle unattended especially with the rear lid
left open. A child could crawl into the vehicle through the luggage
compartment and close the rear lid becoming trapped and unable
to get out . Being trapped in a vehicle can lead to serious personal
injury.
• Never let children play in or around the vehicle.
• Never let passengers ride in the luggage compartment. Vehicle
occupants must always be properly restrained in one of the
vehicle's seating positions.
[ i] Tips
• Air circulation helps to reduce window fogging. Stale air escapes
to the outside through vents in the trim panel, on the left side of the
luggage compartment. Be sure to keep these slots free and open.
• The tire pressure must correspond to the load -see the tire pres ­
sure sticker on the fuel filler door.•

Fuel supply and filling your fuel tank
Blend of gasoline and ethanol (grain alcohol or ethyl alcohol}
• Anti-knock index must be 87 AKI or higher.
• Blend must not contain more than 10% ethanol.
Blend of gasoline and MTBE
• Anti-knock index must be 87 AKI or higher.
• Blend must contain not more than 15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform especially well for
winter or summer driving. During seasonal change -over, we suggest
that you fill up at busy gas stations where the seasonal adjustment
is more likely to be made in time.
0 Note
• Methanol fuels which do not meet these requirements may
cause corrosion and damage to plastic and rubber components in
the fuel system.
• Do not use fuels that fail to meet the specified criteria in this
chapter.
• If you are unable to determine whether or not a particular fuel
blend meets the specifications, ask your service station or its fuel
supplier.
• Do not use fuel for which the contents cannot be identified.
• Fuel system damage and performance problems resulting from
the use of fuels different from those specified are not the responsi ­
bility of Audi and are not covered under the New Vehicle or the
Emission Control System Warranties.
• If you experience a loss of fuel economy or driveability and
performance problems due to the use of one of these fuel blends,
we recommend that you switch to unblended fuel. •
Gasoline additives
A major concern among many auto manufacturers is carbon
deposit build-up caused by the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another,
they have certain things in common. All gasoline grades contain
substances that can cause deposits to collect on vital engine parts,
such as fuel injectors and intake valves. Although most gasoline
brands include additives to keep engine and fuel systems clean,
they are not equally effective.
Audi recommends using TOP TIER Detergent Gasoline. For more
information on TOP TIER Detergent Gasoline, please go to the offi­
cial website (www.toptiergas.com).
After an extended period of using inadequate fuels, carbon deposit
build-ups can rob your engine of peak performance.
(D Note
Damage or malfunction due to poor fuel quality is not covered by
the Audi New Vehicle Limited Warranty. •
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear side panel behind the
fuel filler flap.
If the power locking system should fail, you can still open the flap
manually - for detailed instructions see=>
page 295.
You can find the fuel tank capacity of your vehicle in Technical Data
=> page 363. .,_