fuel pressure AUDI S6 2008 Owners Manual

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. •

Driver information display
0 Note
Do not continue driving if the -F-symbo l illuminates . There is a
malfunction in the engine coo ling system -you could damage your
engine. •
Engine oil pressure malfunction ~
The red engine oil pressure warning symbol requires
immediate service or repair. Driving with a low -oil -pres ­
sure indication is likely to inflict severe damage to the
engine.
If the "l=7': symbol appears in the display and blinks, the oil
pressure is too low. An additional driver message can also
be displayed by pressing the [
CHECK] button:
Switch off engine and check oil level
Immediate actions
- Pull off the road .
- Stop the vehicle.
- Turn off the engine.
-Check the engine oil level with the dipstick:::::> page 301.
Dipstick readings checks too low
- Top off oil to the proper level :::::> page 302.
-Make sure that the oil pressure warning symbol "l=7':
appears no longer in the display before you start driving
again.
Dipstick reading checks OK
-If the oil pressure warning symbol "l=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 ~ 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
I CHECK]
button:
Do not drive vehicle: Steering defective
- Contact your nearest authorized repair facility.
- Do
not tow your vehicle.

Driver inf ormati on displ ay
Windshield washer fluid
leve l low
...
Low fue l level
-Battery voltage
Worn brake pads
-
Dynamic headlight range
control defective
Check engine oil level
=> page 301
Engine oil sensor malfunction
-
Adaptive Light* defective
-
Ignition lock malfunction
Windshie ld wiper defective
Tire pressure monitoring sys-
tern Loss of air pressure
Tire pressure monitoring sys -
tern
System not available
Ba ttery in remote control key
Electromechan ical
parking brake
=> page 36
=> page 36
-
=> page 37
=> page 37
-
=> page 37
=> page 37
=> page 37
=> page 37
-
=> page 38
=> page 38
=> page 44
:::::, page 46
=> page 49
:::::, page 131
•
Appl ies to vehic les: with Advanced Key
Key not in vehicle
,:, Key not in vehi cle
T his reminder appears a long with the -symbol if the master key is
removed from the vehic le with the engine running. It is intended to
remind you (e .g. when changing drivers) not to continue the journey
without the master key .
If the master key is no longer in the veh ic le, you cannot switch off
the ignition after stopping the engine and you also cannot start the
engine again. What is more, you cannot lock the vehicle from the
outside. •
Light/rain sensor defective )
c Automatic hea dlight s/aut oma tic w iper s def ective
If the symbo l il luminates, the light sensor has failed. For safety
reasons the low beams are turned on permanently with the switch
in
AUTO. However, you can continue to turn the lights on and off
using the light switch . In the case of a defect in the rain sensor, the
windshield wiper lever functions are still available. Have the
l ight/rain sensor checked as soon as possib le at a dealersh ip .•
Windshield washer fluid level too low
.5 Pl eas e top up w asher fl uid
If the symbol illuminates, add windshield washer fluid to the washer
system and also to the headlight washer system:::::,
page 312. •
Fuel supply too low L)
Please refuel

Driver information display
In addition, all the values in the single -trip or the total -trip memory
can be deleted simultaneously.
[ i ] Tips
All stored values will be lost if the vehicle battery is disconnected. •
MMI settings
Basic settings for the trip computer can be made in the
MM/.
Fig. 25 MMI display :
Trip computer
Setting values to zero
-Press the I CAR I function button.
- Select
Instrument cluster.
-Select Trip computer 1 or Trip computer 2.
-Select Reset to delete all the values in the memory
~ fig. 25.
Displaying and hiding driver information
-Press the I CAR I function button.
- Select
Instrument cluster.
- Selec t Trip computer 1 or Trip computer 2.
-Select, for example, Fuel range On to turn on the display
or
Off to turn the display off.
All values in the single-trip or the total-trip memory can be reset to
zero simu ltaneously in the MMI. In addition you can determine what
driving information from the trip computer shou ld be shown in the
instrument cluster display . If one of the pieces of driver information
is turned
off, that driver in formation will not be shown in the display.
The information will continue to be calculated by the trip computer
and can be turned back
on at any time. •
Tire pressure monitoring system
General notes
As an added safety feature, your vehicle has been equipped with a
tire pressure monitoring system (TPMS) that illuminates a low tire
pressure telltale when one or more of your tires is significantly
under-inflated . The TPMS on ly provides a low tire pressure warning
and does not reinflate your tires .
Accordingly, when the low tire pressure telltale illumin ates, 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 failure.
Under -inflation also reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stopping ability .
0 Note
• Please note that the TPMS is not a substitute for proper tire
maintenance, and it is the driver's responsibility to maintain correct
tire pressure, even if under-inflation has not reached the level to
trigger illumination of the TPMS low tire pressure telltale. .,,_

Driver inf ormati on displ ay
<£> For th e sak e of th e environm ent
Driving w ith under -inflated tires reduces fuel efficiency and tire
tread life.
[ i ] Tip s
• Each tire, incl udin g the sp are, should be checked monthly when
cold and set to the recommended inflation pressure as specified on
the tire pressure label=>
page 317.
• The factory supplied spare whee l is equipped with a sensor for
the tire pressure monitoring system. As long as the spare whee l it
not mounted, the tire pressure of this tire will not be monitored.
• The tire pressure monitoring system he lps the driver to keep an
eye on t ire pressures. But the driver stil l has the responsibility for
maintaining the correct tire pressure.
• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambient air temperature .
• When tires are replaced, the sensors and valves shou ld not be
detached or exchanged. Only the valve core needs to be rep laced
and, i f necessary, the valve and the wheel electronics replaced.
• If you should put different wheels and tires on your vehicle (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatible with the tire p ressure monitoring system.
Otherwise the system w ill register a ma lfunction and a fault
message will be displayed . For more information, contact your Audi
dea ler.
• Adjust the tire pressure and store the pressure in the tire pres­
sure monitor ing system to the load you are carry ing. •
Significant loss of air pressure ft)
The yellow symbol appears in the event of a significant
loss of air pressure .
0
"' 8
i
Fig . 26 Disp lay: ye llow
s y mbo l w ith m essage
If the warni ng l ight in the i nstrument cluster comes on
and t hen the ' ) symbol appears in the display~ fig. 26,
press ure in at least one t ire is too low.
Stop driv ing as soo n as possible without endangeri ng
yourself and other drivers o n the road .
- Inspect all tires.
- Change the tire if necessary~
page 338.
The' warning ligh t in the instrument cluster comes on when the
tire is significantly underinflated.
In addition, the tire symbol appears in the display together with
the message
Pl ease check tir e pr ess ure::::> fig. 26 .
After a few seconds, the message disappears again. If you would
like to show the message again, press the [ CH ECK] button. _.,,

[ 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.•

Operating instructions
Max im um tra iler weight
A trailer for your vehicle is limited to a typical class 1 or class 2
trailer.
T ra ile r l oa d di stributio n
Be sure the load in the trailer is he ld securely in place to prevent it
from shifting forward, backward or sideways .
Never allo w a passe nger to r ide in a tr aile r~ & in "Driving instruc­
tions" .
Engin e c oolin g sys te m
Towing a trailer makes the eng ine work harder. It is important that
the cooling system's performance is up to the additiona l load. Make
sure that the coo ling system has enough fluid .
Tire pr ess ure
When towing a trailer, inflate the tires of your vehicle to the co ld tire
pressure listed under "Full load" on the labe l located either on the
driver's side B -pil lar (visible when the door is open) or inside the fuel
filler flap . Inflate trai ler tires to trai ler and tire manufacturers' spec­
ifications.
L ig ht s
The head light settings should be checked wit h the trai ler attached
before driving off. Check to make sure both vehicle and trai ler lights
are working properly .
Safe ty c ha in s
Be sure traile r safety chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough slack in the chains to
perm it turning corners . When you i nsta ll safety chains, make sure
they will not drag on the road when you are driving.
T he chains should cross under the trailer tongue to prevent it from
dropping in case of separat ion from the hitch.
Controls and equip­
ment Safety first Vehicle operation
Tr
aile r t owing
0 Note
If you are going to tow a trai ler, you must activate the trailer opera­
tion mode ~
page 184, "Towing a trailer". •
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possible handling of veh icle and trailer,
please note t he following :
- Do not tow a loaded trailer when your car itself is not
loaded.
Be espec ia lly careful whe n passing other vehicles.
- Observe s peed limits .
Do not drive at the maximum permiss ible speed .
Always apply brakes ear ly.
Moni tor t he temperature ga uge.
Weight distr ibution
Towing a loaded trailer with an empty car results in a highly
unstable distr ibution of weight. If this cannot be avoided, drive at
very low speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that
the tow vehicle should be loaded to the extent possible and perm is ­
s ib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfe r so me cargo to t he luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considera tions . .,
Vehicle care Do-it-yourself service Technical data

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•
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced .
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage => &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake .
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment .
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm . The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open flames . Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever to "P"
(Park). .,
Vehicle care
I t •