check engine AUDI S6 2008 User Guide

If the ABS system malfunctions, the ABS warning/indicator light illu­
minates together with the brake system malfunction warning/indi ­
cator light~
&-
& WARNING
• Always observe the warnings in ~ page 289, "Engine compart­
ment", before opening the hood and checking the brake fluid.
• Driving with low brake fluid is a safety hazard . Stop the car and
get professional assistance.
• USA models: If the
BRAKE warning light and the c~ warning
light come on together, the rear wheels could lock up first under
hard braking . Rear wheel lock-up can cause loss of vehicle control
and an accident. Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models : If the brake warning light
«D> and the ABS
warning light come on together, the rear wheels could lock up
first under hard braking. Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme­
diately by your authorized Audi dealer or a qualified workshop .
Drive slowly and avoid sudden, hard brake applications. •
Engine cooling system malfunction -L
A malfunction in the engine cooling system must be
repaired as soon as possible.
When the -t symbol in the display blinks, then either the
engine coolant
temperature is too high, or the coolant level
is too low. An additional driver message can also be
displayed by pressing the [ CHECK] button:
Switch off engine and check coolant level
-Pull off the road .
Controls and equip ­
ment
Driver information display
Stop the vehicle.
- Turn off the engine.
Check coolant level
=> page 304 .
Add coolant if necessary=> page 305.
Continue driving only after the engine coolant
warning/ind icator light goes out.
Contact your authorized Audi dealer for assistance if necessary.
If the engine coolant level is correct, then the radiator fan may be
the cause of the malfunction.
If the generator warning/indicator light should also illuminate
~ page 79, then the fan belt may be damaged.
& WARNING
• If your vehicle should break down for mechanical or other
reasons, park at a safe distance from moving traffic, turn off the
engine and turn on the hazard warning lights
~ page 73, "Emer­
gency flasher
A".
• Never open the hood if you see or hear steam or coolant
escaping from the engine compartment -you risk being scalded.
Wait until you can no longer see or hear steam or coolant
escaping.
• The engine compartment of any vehicle is a dangerous area.
Before you perform any work in the engine compartment, turn of
the engine and allow it to cool. Follow the warning stickers
~ page 289, "Engine compartment" . .,_
I • •

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.

& 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.
On vehicles wi th Advanced Key *, the engine should not be switched
off using the
I STOP I button because the engine cannot be started
again after the ignition is switched off .•
Controls and equip ­
ment
Driver information display
Yellow symbols
A yellow symbol means WARNING.
Fig. 19 Display: low
fuel level warning
(priority 2)
Yellow symbols indicate a priority 2 malfunction -Warning!
When a yellow warning symbol appears , one warn ing tone sounds.
A driver message appears as well to explain the malfunction in more
detail. The driver warning goes out after about 5 s econds, but it can
be brought up again at any time by pressing the I 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 .
Y ellow symbols mean :
Advanced Key* Key not in vehicle
l[usA models:
Defective brake light
Canada models:
Defective brake light
]f Defective light bulb
Light/rain sensor defective
I • •
~ page 128
~ page27
-
~ page27
~ page27
-
~ page36

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

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 • •

Child safety lock
Power child safety lock for the rear doors t
The power child safety lock prevents the rear doors from
being opened from the inside.
Fi g. 4 2 Sec tio n fro m
dr ive r's door: co ntrols
T he rear doors ar e equip ped with a power child safe ty lock .
It is operated with t he two safety buttons(!) in the driver's
door=} fig. 42 .
- Press the left and/or right safety button to disable t he
rear p ower window(sl and preve nt the respective rear
door from being opened from t he inside. The LED in the
button will light up when the chi ld safety lock is tur ned
on .
- Press the ill umina ted butt on aga in t o turn the child
safety f eatures
off .
When the chi ld safe ty lock is activated, the interior door opening
lever is inoperative; the door can only be opened from the ou tside .
In addi tion, the window regulator for that door is a lso inoperative
when the child safety lock is activated.
Con tro ls and eq uip­
ment
Op ening and clo sing
[ i ] Tip s
• In order to activate the child safety lock on the left and the righ t
side, you have to press the two safety buttons in succession.
• Make certain that the check light comes on in the corresponding
safety switch when the child safety lock is activated. •
Advanced Key
Applies to veh ic les: wit h Ad vanced Key
Description
Access and vehicle operation based on: Master key remains in driver's pocket.
The Advanced Key vehicle authori zation system allows keyless
unlocking, locking and starting of the vehicle . You only have to carry
t he master key on your person .
It makes no difference whether the master key is in your jacket
pocket or in your brief case . As soon as you approach your vehicle ,
the Advanced Key recogni zes the request for access, checks for
authori zation and enab les th e following functions :
• Unlocking the vehicle:::::,
page 60.
• Locking th e vehicle :::::, page 61.
• Switching on ignition and starting the engine by pressing the
I STAR T] button; the master key does not have to be in the igni tion
sw itch:::::,
page 126 .
& WARNING
• Whe n you lock your veh icle from o uts id e, nobod y -espe cia lly
c hildren -sh ould re main in side the vehic le. Reme mber , when you
lock the vehicle fr om the out side th e windo ws cannot be open ed
from the inside. .,,.
Vehicle care
I I Technical data

Opening and closing
H ow is th e a nti-th eft alarm s yste m swi tched off ?
The anti -theft alarm sys tem is switched off only whe n you un lock
your vehicle. If you do not open a door within 60 seconds after you have un locked with the remote control , the vehicle will lock itself
again automatically.
When will the anti -th eft alarm syst em be trigg ered ?
When the vehicle is locked, the alarm system monitors and protects
the following parts of the vehic le:
• engine compartment
• luggage compartment
• doors
• vehicle incline
• ignition
When the system is activated, the alarm will be trigge red if one of
the doors, the engine hood or the rear lid are opened, or if the igni­
t ion is turned on or if the veh icle incline has been changed. The an ti­
theft a larm system will also go off when the battery is disconnected.
You can also trigger the alarm by pressing the PA NIC button on your
remote control. This w ill alert other people in case of emergency.
Press the
PANIC button again to turn off the alarm.
H ow i s th e ant i-th eft al arm swit ch ed off whe n
tr igg ered ?
The alarm system is switched off when you unlock the vehic le or
when the ignition is switched on . T he alarm will a lso switch itself off
when it comes to the end of its cycle .
Emergency flasher and horn
The emergency flasher wi ll blink briefly and the horn sounds when
the doors, engine hood and rear lid are properly closed.
If the emergency flashers do not blink, or the horn does not sound ,
check the doors, engine hood and rear lid to make sure they are
properly c losed . If you close a doo r, the hood or the rear lid w ith the anti
-theft a larm switched on, the emergency flashers will blink and
t he horn will sound only af ter you have closed the door or l id .
Ii ] Tips
Fo r the anti -theft a larm system to function proper ly, make sure a ll
vehic le doors and windows are closed before leaving the vehicle .•
Tilt sensors 1Q
The tilt sensors trigger an alarm if they detect vehi cle
movement.
F ig . 4 5 Driver 's doo r:
tilt sensor swit ch
Sw itch o ff th e til t sensors if you ar e go ing to have your
vehic le transporte d.
Switch off the tilt sensors Press the switch
~ located in the driver's door~ fig. 45.
Lock the ve hicle .
When you turn off the tilt sensors, the diode in the switch~ will illu ­
minate. Also, the indicator light in the door trim will illuminate for
about three seconds. After you lock the vehicle, the indicator light
in the door t rim wil l bl ink quick ly for about three seconds . After that,
the blinking s lows down. .,.

The next time t he vehicle is locked, the ti lt sensors a re automaticall y
tu rn ed on again.•
Power windows
Controls
Switches for front door windows
@ o per ates th e wi ndow in th e d river 's d oor.
Fig . 46 Driver 's door:
power window
switches
@ ope ra tes th e window in the fr ont passe nger's door.
Switches for rear windows
© operates the left r ear window .
@ operates the right rear window .
Safety switch
© S afety switch fo r rear window operation.
& WARNING
• Do not leave children unattended in the vehicle , especially with
access to vehicle keys. Unsupervised use of the keys can result in
starting of the engine and use of vehicle systems su ch as power
windows, etc. which could result in serious injury.
Con tro ls and eq uip­
ment
Opening and closing
& WARNING !continued)
• Remember -you can still open or close the power windows for
about ten minutes after the ignition is switched off . Only when
either of the front doors are opened are the power windows
switched off .
• Be careful when closing the windows . Check to see that no one
is in the way , or serious injury could result!
• Always remove the ignition key whenever you leave your
vehicle .
• If you lock your vehicle from the outside, no one , especially chil ­
dren , should remain in the vehicle .
• Do not stick anything on the windows or the windshield that
may interfere with the driver 's field of vision .
[ i ] Tips
In addition to the switches in the driver 's door there is a separate
sw itc h in eac h do or f or the po wer window in th at do or =::> page 64,
fi g . 4 7 .
a
Switches in the driver's door
The dr iver can operate all windows .
If th e re spect ive sw itc h is pu shed or pull ed the w ind ow will
ope n or clos e. T he powe r w in dow swi tc hes ha ve a two-posi­
tion function:
Opening the vvindovvs
P u sh the s wit c h to the first stop and hold it there un til the
w ind ow has l ow ered t o th e desired position.
Pu sh the s witch brie fly to the second stop : the win dow
w ill a uto maticall y open a ll the way. _.
Vehicle care I I irechnical data

Sliding the roof open all the way
- Turn the rotary switch to position
0-Airflow over the
fully opened sunroof may cause increase d wind noise.
Tilting the roof open - Turn the rotary switch to position @.
- In position @, briefly
press the control to tilt the roof up
completely.
To tilt the roof open to any intermediate position
press
and hold
the switch until the roof reaches the desired
position.
In position ©, the switch jumps back to position G) again as soon
as the switch is released.
When the glass roof opens, the sun visor, which is designed to ward
off strong sunlight, opens along with it. The visor can be closed
manually when the sunroof is closed.
[ i] Tips
• Be aware that the sunroof may actually be open when the sun
visor is closed. Check and make sure that the sunroof is shut when
parking the car or if it suddenly starts raining.
• If the sunroof is not fully closed but you have pressed and held
the switch for the tilt position, the sunroof will not tilt. •
Appl ies to vehicles: with sliding/tilt ing power sunroof
Closing the power sunroof
Sliding the roof shut
- Turn the rotary switch to position
0 => page 66, fig. 49
=>& .
Controls and equip ­
ment
Opening and closing
Tilting the roof shut Briefly
pull the rotary switch to close the roof.
To tilt the roof down to any intermediate position
pull and
hold
the switch until the roof reaches the desired posi­
tion.
& WARNING
Improper use of the power sunroof can cause serious personal
injury.
• Be careful when closing the power sunroof . Not paying atten­
tion could cause you or others to be trapped and injured as the roof closes.
• Always take the key with you when you leave the vehicle to
prevent injuries caused by the roof closing
• Never leave children or persons requiring assistance alone in
the vehicle, especially when they could access the vehicle keys. Unsupervised use of the keys can result in the engine being
started or use of vehicle systems such as the power windows. etc .
which could result in serious injury. The doors could be locked
with the remote key, delaying help in an emergency.
• The power sunroof will continue to operate until the ignition
key has been removed and one of the front doors has been
opened. •
Applies to veh icles: with sliding/t ilting power sunroof
Convenience closing feature
The power sunroof can be closed from outside with the
key in the driver's door lock.
-Insert the key into the driver's door lock.
I • •

Clear vision
Clear vision
Lights
Switching the headlights on and off ·t/.·
In the "AUTO" position, a light sensor automatically
s w itches the head- and taillights on an d off in resp onse to
l igh t co nditio ns.
Fig . 54 In strument
p anel: light swit ch
T he lig ht switc h must no t be overt urned pas t the stops in
either direc tion .
Switching on automatic headlight control
-Tur n t he light switch to AUTO =:> fig. 5 4.
Switching on the side marker lights
- Turn t he lig ht s witch to ~oo~.
Switching on the headlights and high beam
- Turn t he lig ht switch to ~D.
- Pu sh th e high beam l ever f orwar d tow ards t he ins tru-
m en t panel =:>
page 74 .
Switching off th e lights
- T urn the light switch to 0.
The head lights only work when the ignition is swi tched on. Whi le
starting the engine or when switching off the ignition, the head ­
l ights wi ll go off and only the side marker lights wi ll be on.
After starting the engine, the headlights are automatically adjusted* to the load and angle of the vehicle (for example, dur ing
acce leration, braking) . T his prevents oncoming traffic from experi­
encing unnecessary head ligh t glare from your headligh ts .
If the system is not ope rating properly, a warni ng sy mbol in the
Auto -Check Control is displayed =>
page 37.
With the side marker lights or headlights switched on, the symbol
next to the light switch illuminates
coo:.
Daytime running light s
• USA models : On vehicles with xenon lights the daytime running
l ights wil l come on a utomatica lly when th e ignition is t urned on an d
the light switch => fig. 54 is in the
O position or the AUTO position
(on ly in day light co nditions). The
Daytime running lights func tion
can be turned on and off in the MMI menu
Exterior lighting
=> page 71. On vehicles with halogen lights there is no daytime
running lights function=> &.
• Canada models: The daytime running lights wil l come on auto ­
matical ly when the ignition is turned on and the ligh t switch
=> fig. 54 is in the
O position or the AUTO position (only in day ligh t
conditions)=> &.
Automatic headlight control
In the switch position AUTO the automatic h eadlight control is
turned on . The low beams are tu rned on automatically through a
l ight sensor as soon as ambient brightness (e .g. when driving into a
tunnel) falls below a value preset at the factory . When ambient ...