2009 AUDI S8 check engine light

Table of contents
Table of contents
Vehicle literature ........ .
About this Owner's Manual .............. ...... . .
Controls and
equipment .. .. .... ..... ... . .
Inst rumen ts and con trols ..... .
Genera l ill ustration ............. .
Instruments and
warning/indica tor lig hts ....... .
Instruments .............. ..... .
Warning/indicator lights ........ .
Driver in forma tio n d isplay ..... .
Introduct ion ............... .... .
On-Board Diagnostic system (OBD)
Auto Check Control ............ .
Speed warning system ... .... .. .
Trip computer ..... ... .. ..... .. .
Tire pressure monitoring system ..
Opening and closing .......... .
Keys ...... ...... ... .. . ··· ·· ··· ·
Powe r locking system .......... .
Rear lid/Trunk lid ............. .. .
Ch ild safe ty lock . ... ..... ... ... . 5 Convenience key
.............. .
Anti-theft a larm system ..... ... .
Power w indows ... ... ... .... . .
S lid ing/ti lt ing power sunroof ... .
6 Clear vision ... .... .. ... .. .... . .
9
11
1 1
12
12
1 6
24
2 4
27
28
37
38
41
47
47
49
54
57 Lights
... ............. .. .. .. .. .
Interior lights ...... ... .. ... ... .
V is ion ................. .... ... .
W iper and washer system ...... .
Mirrors .... ... ......... ..... . . .
Seats and sto rage ..... .... ... .
Genera l recommendat ions ..... .
Powe r seat . ... ... ......... ... .
Head restraints ....... ....... . .
Arm rest .................... . .
Seat memory ... .. ... ... ... ... .
Rear sea ts . ... ... . .. ... ... .. .. .
Ind ividua l rear seats ........ ... .
Luggage compartment ..... •.. .
Roof rack ........... .... ... ... .
Cupho lder .................... .
As htray . ... ... ... ......... ... .
Cigarette lighter/socket ........ .
Long center console ........... .
Storage . ... ..... ... ... .. ... .. .
Warm and cold ............... .
Climate controls .............. .
W indshield defogging/defrosting .
Rear climate controls .. .. ... ... .
Basic settings .............. ... .
On the road ... ... . .. ... .. ... .. .
Stee ring . ...... .... ........ ... .
Ignition lock and ignition switch .
Starting and stopping the engine 58
Starting and stopping the engine
60 using the Conven ience key ... .. .
61 Electromechanical parking brake .
65 Cru ise control ....... ... ....... .
69
Adapt ive Cruise Control ....... .
131
134
137
139
69 Speed and distance control system 139
74 Drive r informat ion . . . . . . . . . . . . . . 146
77 System limita tions . . . . . . . . . . . . . . 150
80
Audi lane assist . . . . . . . . . . . . . . . . 153
83 Lane assist . . . . . . . . . . . . . . . . . . . . 153
86
A udi side assist . . . . . . . . . . . . . . . . 156
86
87
91
93
9 4
96
97
100
103
105
106
107
108
109
1 14
11 4
123
125
126
128
128
129
130 Lane Change
Assistant ......... .
No tes ........ ...... ........ .. .
Automatic transmission ....... .
tiptron ic® (6-speed automatic
transm ission) ................. .
Advanced Parking System .... .
Advanced Parking System with rear
v iew camera .................. .
Specia l parking situations .... .. .
Towing hitch ......... ... ...... .
Settings in the MM I .. ... .. .... . .
Safety t ips .............. ...... .
Adaptive Air Suspension ...... .
Adaptive Air Suspension and
Damping ..... ................ .
Homelink® .................. .. .
Universa l remote control ....... . 156
163
166
166
173
173
181
183
183
186
188
188
19
4
19 4

Safety first ........ ... ... .. .
Driving Safely ................. .
General notes ... .............. .
Proper occupant seating positions
Driver and passenger s ide footwell
Peda l area ..... ..... ....... ... .
Stowing luggage .............. .
Reporting Safety Defects ..... .. .
Safety belts .............. ... .. .
Genera l notes ....... .......... .
Why safety be lts? .. ...... ..... .
Safety belts .. .. .. .... ... .. ... .
Safety belt pretensioners ...... .
Airbag system ..... ... ... .. ... .
Important thing s to know .. •....
Front airbags .. ... ..... ..... .. .
Monitoring the Advanced Airbag
System ..... ... .. ....... .. ... .
Knee airbags ................. .
Side a irbags .... ..... ........ . .
Side curtain airbags ........... . 199
200
200
202
206
206 207
209
211
211
212
215
218
220
220
224
231
236
239
242
Child Safety . . . . . . . . . . . . . . . . . . . . 245
Impor tant things to know . . . . . . . 245
Child safety seats . . . . . . . . . . . . . . 250
Insta lling a ch ild safety seat . . . . . 255
Addit ional Information . . . . . . . . . . 258
Lower anchorages and tether for
children (LATCH) . . . . . . . . . . . . . . . . 260
Vehicle operation . . . . . . . . 269
Intelligent technology . . . . . . . . . . 270
Notice about data recorded by
vehicle control modules . . . . . . . . .
270
Elect ronic Stabilizat ion Program
(ESP) . . . . . . . . . . . . . . . . . . . . . . . . . .
270
Braking . . . . . . . . . . . . . . . . . . . . . . . . 272
Servotronic® -advanced power
steer ing system . . . . . . . . . . . . . . . . 275
Driv ing w it h your quattro® . . . . . . 275
Energy management . . . . . . . . . . . . 276
Driving and environment . . . . . . . 279
The first 1,000 mi les ( 1,500 km) and
afterwards . . . . . . . . . . . . . . . . . . . . .
279
Cata lytic converter . . . . . . . . . . . . . 280
Avoid damaging the vehicle . . . . . 281
Operate your vehicle economically
and minimize pollution . . . . . . . . . .
281
Trai ler towing . . . . . . . . . . . . . . . . . . 284
Driv ing w ith a trailer . . . . . . . . . . . . 284
Trai ler towing tips . . . . . . . . . • . . . . 286
Table of contents
Vehicle care ....... ... ... ... 289
Cleaning and protection ........ 290
General information . . . . . . . . . . . . . 290
Care of exte rior . . . . . . . . . . . . . . . . . 290
Care of inte rior . . . . . . . . . . . . . . . . . 297
Fuel supply and filling your fuel
tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Gasoline . . . . . . . . • . . . . • . . . . . . . . . 303
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . 304
Checking and filling . . . . . . . . . . . . 308
Engine hood . . . . . . . . . . . . . . . . . . . 308
Engine compartment . . . . . . . . . . . . 3 10
Engine oil . . . . . . . . . . . . . . . . . . . . . . 311
Eng ine cooling system . . . . . . . . . . 3 16
Brake fluid . . . . . . . . . . . . . • . . . . . . . 319
Battery . . . . . . . . . . . . . . . . . . . . . . . . 320
W indshield/headlight washer
container . . . . . . . . . . . . . . . . . . . . . . 325
Tires and wheels . . . . . . . . . . . . . . . 326
Tires ... ... ... .... .. ... ... .... .. 326
Vehicle care I I irechnical data

If the indicator goes all the way to the right side inside the coolant
temperature gauge, then the engine coolant temperature is too
high.
Pull off the road to safe location, turn off the engine and let it
cool down.
If the warning light comes on again after you have driven
a short distance, contact a qualified workshop.
& WARNING
• Always observe the warning in :::::, page 301, "Engine compart­
ment", before opening the hood and checking the engine coolant
level.
• Never open the engine hood if you see or hear steam, or if you
see engine coolant dripping from the engine compartment. You
could burn yourself. Let the engine cool off first so that you cannot
hear or see any steam or engine coolant.
0 Note
• Mounting additional lights or accessories in front of the air inlets
reduces the cooling effect of the radiator. At high outside tempera ­
tures or high engine load, the engine could overheat.
• The front spoiler has been designed to properly distribute the
cooling air when the vehicle is moving . If the spoiler is damaged,
this could reduce the cooling effect and the engine could then over­
heat. Ask your authorized Audi dealer for assistance. •
Tachometer (engine rev counter)
The tachometer indicates the engine RPM (revolutions per
minutes).
The tachometer 0:::::, page 12, fig . 2 is the left of the two large clock­
type displays.
The engine turns at a speed
1,000 times the single digit in the
display, e.g. if the needle is pointing at the "2" the engine is turning
at 2,000 RPM.
Controls and equip ­
ment
Instruments and warning/indicator lights
If engine RPM drops below 1,500, you should downshift to the next
lower gear. The red area at the end of the scale indicates maximum
permissible engine RPM after the break-in period. Before reaching
this area, move the selector lever to position "D (Drive)" or ease your
foot off the accelerator pedal.
0 Note
The tachometer needle should not move into the red range . If it
does, then only for a very short period of time. You could damage
your engine by driving at high RPM.
<£> For the sake of the environment
Upshifting early saves fuel and reduces engine noise .•
Digital clock with date display
Date and time of day can be set in MM/.
Fig . 3 Instrument
cluster with digital
clock
The date, time of day, and time and date format can be set in MMI.
You can find out more in the MMI manual. ..,.
I • •

There is still approximately 2.4 gallons (9 liters) of fuel left. This
message is meant to remind you to
refuel.
(D Note
Never run the tank completely dry. An irregular supp ly of fuel can
cause engine misfiring and fuel could enter the exhaust system . The
cata lytic converter could then overheat and be damaged. •
[ CHECK] button
You can perform different functions with this button .
Fig. 5 CHECK button in
the instrument cluster
Th e [ CHECK] button performs the following functions:
Switching on the clock and odometer
With the ignition turned off, the odometer reading and the digital
clock with date display can be sw itched on for about 30 seconds by
pressing the
I C HE CK I button ~ fig. 5 .
Starting the Auto-Check sequence
The Auto -Check system ~ page 28 constantly monitors certain indi­
vidual functions and components of the vehicle when the ignition is
turned on and when the vehicle is moving.
With the ignition turned on, you can start the "Auto -Check
sequence" by pressing the !CHECK] button. You can perform an
Contro ls and eq uip­
ment
Instruments and warning /indicator lights
Auto-Check sequence when the vehicle is stationary and the ignition
is turned on or when the vehicle is moving not faster than 3 mph
(5 km/h).
Calling up the driver information
A yellow or red symbol appears in the instrument cluster disp lay,
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 !CHECK ] button .
Setting the speed warning
By pressing the [ CHECKJ but ton briefly , you can set threshold 1 of
the speed warning while you are driving~
page 37. By maintaining
pressure on the [ CHECK] button, you delete the warning
threshold. •
Instrument cluster illumination
The basic brightness of the illumination for the instru­
ments, the center console and the display can be
adjusted.
Fig . 6 Instr ument
c luster illumination
Press the"+" button to increase the brightness during
the hours of darkness.
~
Vehicle care I I irechnical data

tl~ Airbag system
--
/: Lane assist (system is ready)
Lane assist (system is not ready)
¢
D
-
Left turn signal
High beam
Fog lights
Rear fog lights
Tire pressure monitoring system*
Malfunction Indicator Lamp (MIU
Safety belt
Adaptive Air Suspension
~ Adaptive Air Suspension
--
CRUISE
Right turn signal
USA models :
Cruise control activated
Canada models:
Cruise control activated
USA models:
Anti-lock brake system (ABS) defec­
tive
Controls and equip ­
ment
=> page 19
=> page 19
=> page 19
=> page 19
=> page 19
=> page 19
=> page 19
=> page 20
=> page20
=> page20
=> page20
=> page 21
=> page 19
=> page 21
=> page 21
=> page 21
-
-
-
-
Instruments and warning/indicator lights
PARX
BRAKE
(® )
-
Canada models:
Anti-lock brake system (ABS) defec­
tive
USA models :
Electromechanical parking brake
Canada models: Electromechanical parking brake
BRAKE USA models:
Brake malfunction
--((D) Canada models:
Brake malfunction
=> page 21
=> page22
=> page 22
-
=> page 22
=> page22
Vehicles with the Adaptive Cruise Control* have the follow ing addi ­
tional check lamps:
II II c;:;:::::::, Open road
c;:;:::::::, 11 11 c;:;:::::::, D r i vi n g i n t raff i c
c;:;:::::::, 11 11 c;:;:::::::, R e q u e st f o r d r i v e r to
assume control
& WARNING
=> page 146
=> page 146
=> page 146
• Failure to heed warning lights and other important vehicle
information may result in serious personal injury or vehicle
damage.
• Whenever stalled or stopped for repair, move the vehicle a safe
distance off the road, stop the engine, and turn on the emergency
flasher
=> page 73 .
• The engine compartment of any motor vehicle is a potentially
hazardous area. Before you check anything in the engine compart-
ment, stop the engine and let it cool down. Always exercise _..
I • •

Inst rum ents and w arnin g/indi cat or li ghts
& WARNI NG (con tinu ed)
ex treme ca ution whe n wo rki ng und er the hood => page 301,
" Engin e comp artment"
[ i ] Tips
Many functions are monitored by the Auto -Check system
=>
page 28 . Malfunctions or faults wil l be identified either with a red
symbol (pr iority 1 -Danger!) or with a yel low symbol (priority 2 -
Warning). •
Electronic power control
,._
This warning/indicator light monitors the electr onic
power control.
The warning/indicator light (Electronic Power Control) i llumi -
nates when you turn on the ignition as a function check.
[ i ] Tips
If this warning/indicator light illuminates whi le you are driving, then
there is a malfunction in the engine electronics . Have the malfunc­
tion corrected as soon as possible by your authorized Audi dea ler or
qualified repair facility .•
Generator D
This warning/indicator light detects a malfunction in the
generator or in the vehicle's electrical system.
The O warning/indicator light i lluminates when you switch on the
ignition and must go out after the engine has started.
If the O warning/indicator light illuminates while you are driving,
you should contact your authorized Audi dealer . Since the vehic le battery is discharging, you should switch off any unnecessary elec
­
t rical consumers (for example, the air conditioner) .
0 Note
If the _f_ warning/indicator light (malfunction in the engine coo ling
system) in the instrument cluster should illuminate=>
page 31, stop
the vehicle and turn off the engine . The water pump is not working
- this can cause engine damage. •
Electronic stabilization program (ESP) This warning/indicat or light monitors the electr onic stabi ­
lization program .
The warning/indicator light has the following functions:
• It blinks while you are driving when the ESP is working .
• It illuminates when you switch on the ignition for approximate ly
2 seconds as a function check .
• It illuminates when there is a malfunction in the ESP. The
message
E S P f ault ! Se e owner 's manual also appears in the instru ­
ment cluster display and a warning tone sounds .
• It illuminates continuously when the ESP is switched off .
• It illuminates if there is a malfunction in the ABS, since the ESP
is part of the ABS system.
If the battery terminals were disconnected and re-connected , the
vehic le was jump started or the batte ry is very weak, the ESP sensor
system goes through a learning process for the first few yards. The
warning/indicator light illuminates . The warning/indicator light
goes out as soon as the learning process is complete.
If the ESP warning/indicator light illuminates and stays on after you
have started the engine, this may mean that the control system has
temporarily switched off the ESP . If this is case, you can reactivate
the ESP by turning the ignition off and then on again . The .,_

Instruments and warning/indicator lights
Ap plies to vehi cles : wi th n re pressu re monitor in g system
Significant loss of air pressure l
The warning/indicator light appears in the event of a
significant loss of air pressure.
The 'warning/ indicator light illum inates when you switch on the
ign ition and must go out after the engine has started .
If the
I symbo l appears, pressure is too low in at least one tire.
For more information
~ page 43. •
Malfunction Indicator Lamp (MIL) ....;
The Malfunction Indicator Lamp (MIU is part of the On-Board Diag ­
nostic (OBD II) system. The symbol lights up when the ignition is
turned on and will turn off after the engine has started and has sett led at a constant id le speed. This indicates that the MIL is
work ing proper ly .
The warning light illuminates 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 305.
For more information ~ page 27. •
Safety belts 4i-
This warning/indicator light reminds you to put on your
safety belt.
The 4,_ warning/indicator light illuminates when the ignition is
switched on to remind the driver and any front passenger to put on
the safety belt. Additionally, an acoustic warning (gong) will also
sound. For more
Information~
page 211, "Safety belt warning light t". •
Adaptive Air Suspension
The warning/indicator light illuminates, when the jacking mode
has been activated ~ page 191. This warning/indicator light has the
following functions:
• It illuminates for a few seconds after the ignition is turned on as
function check and then goes out .
• If the warning/indicator light illuminates steadily, there is a
system fault in the Adaptive Air Suspension . A system fault can
r esult in lim ited ride comfort and
low ground clearance . The fault
should be corrected as soon as possib le by an authorized Audi
dea ler .
• If the warning/indicator light flashes, you should not drive the
vehic le . The flashing warning/indicator light points to an extreme
High level. A very pronounced lifting of the vehicle (extreme High
level) can resu lt, for examp le, when a heavy load is removed from
the vehic le . As soon as the level has returned to normal, the
warning/indicator light stops flashing , and you can drive away .
• If the warning/indicator light flashes in conjunction with the~
warning/indicator light, you should not drive off immediately in
order to prevent damage to the underbody . The two warning/indi­
cator lights flashing together points to an extreme Low level. A very
pronounced lowering of the vehicle (extreme Low level) can result,
for example , from a heavy load. As soon as the level has returned to
normal, the warning/indicator lights stop flashing, and you can
drive away .
0 Note
If the warning/indicator light flashes in conjunction with the~
warning/indicator light, you should not drive the vehicle because
l ow -lying vehicle parts can bottom out as you drive over uneven
ground and be damaged as a result.•

Instruments and warning/indicator lights
Malfun cti on in the ele ctronic differ ential lo ck (EDL )
The
ED L works t oget her with the ABS. T he ABS warning light w ill
come on if there is a ma lfunction in the
ED L system=> page 271 . See
your au thorized A ud i dea ler as soon a s possible.
& WARNING
• If the ,..,1 (USA models )/;:_,,. (Canada models) warning light
does not go out , or if it comes on while driving , the ABS system is
not working properly. The vehicle can then be stopped only with
the standard b rake s (w ithout ABS ). You will not have the p rotec ­
tion ABS provides . Contact your Audi de aler a s soon as po ssible .
• USA model s: If the BRAKE warning l ight , the < warning light and
the warning light come on together , the rear wheels could
lock up first under hard braking . Rear wheel lock -up can cause lo ss
of vehicle control and an accident . Have your vehicle repaired
immediately by your authorized Audi dealer or a qualified work ­
shop . Drive slowly and avoid sudden , hard brake applications .
• Canada models : If the brake warning light (CD), the ., warning
light and the ABS warning light come on together , the rear
wheels could lock up fir st under hard br aking. Rear wheel lock -up
c an 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 br ake
appli cation s.•
Electromechanical parking brake
~[ (USA models)
/(®) (Canada models)
T he warnin g/in dic ator l igh t m on it ors the electromech an­
i c a l p arking brake.
With the parking brake applied and the ignition turned on, the
war ning/ ind icator lig ht illu min a te s. After the ig nition has been
turned off, the warning/indicator light continues to i llum inate for
abo ut 3 0 seconds. If the parking bra ke is applied with the ignition turned off,
the warning/indicator light i lluminates for about 30
s e co nd s.
Th e warning/ind icator light wi ll go out when the parking brake is
r eleased .
I f the warn ing/indica tor l ight flas hes con tinuously
after applying the
par king brake, bra king force is not sufficient to prevent the vehicle
from rol ling uni nten tional ly . T h is can h appen if the brak es bec ome
too hot . Please note the fol lowing :
• I f the slope of the g round is too steep to pa rk the ve hicle, the
addi tiona l dr ive message a ppears
Caution: Vehicle parked too
steep.
• I n the event of a parking brake malfunction , the yel low symbol
appea rs in the instrument c luster display and the driver mes sage
Parking brake malfunction ! is d isplayed . Have the mal fu nct io n
r epaired as soon as poss ib le by a qualified Audi deale rship .•
Brake system BRAKE (USA models) / ((J)) (Canada
models)
The warning/indicator light fl ash es if bra ke fluid level is
low, if there is an A BS sys tem mal function or a parking
brake malfun ctio n.
T he li ght illu minates w hen t he ignitio n is tur ned on. It goes out afte r
the engine has been started . T his indicates that the brake warning
li ght is fu nctioni ng prope rly.
If the brake warning light does not light up when the engine is
cranking , there may be a malfunction in the electrical system. In this
case , contact your Audi dealer.
If the brake system warning/indicator light flashes, there is a brake
syste m malfunct ion . By press ing the
!CHECK ] button, you can bring
up a driver message which exp lains the ma lfunction in more detail
=>
p age 30. ~