ECU AUDI S6 2009 Service Manual

What do I do now? 111111 _______________________________ ....:..:..:..:..:.:..:--=.:..::....:.....:.:...::..___;__ _ __,J
& WARNING !continued)
• Never start or run the engine while the vehicle is supported by
the jack.
• If you must work under the vehicle, always use safety stands
specifically designed for this purpose.
• Never use the hexagonal socket in the handle of the screw­
driver to loosen or tighten the wheel bolts.
• Always make sure the spare tire and even a flat tire are secured
in place and not loose, otherwise they could fly forward, causing
personal injury to passengers in the vehicle in an accident or
sudden maneuver. •
Tools
The vehicle tools are stored in the luggage compartment
behind the right-side trim panel.
-
-
The onboard tool kit includes:
• Hook for removing wheel covers *
• Wheel bolt wrench
• Alignment pin for changing wheels
• Screwdriver with reversible blade
Fig. 257 Luggage
compartment: vehicle
tool kit
• Towing eye
[ i] Tips
Some of the on board items listed above are provided on certain
models only or are optional extras.•
Spare wheel
The spare wheel is stored in the wheel well underneath
the floor panel in the luggage compartment.
Fig. 258 Luggage
compartment spare
wheel
Your vehicle is equipped with a regular spare wheel. It is
held in place by plastic retaining knurled screw.
Taking out the spare wheel
- Raise the floor panel at the plastic handle.
- Securely engage the handle in the luggage compartment
seal as illustrated to keep the floor panel up.
Unscrew the knurled retainer bolt in the wheel center
=> fig. 258. Turn it counter-clockwise.
- Take out the spare wheel.
Vehicle care Do-it-yourself service irechnical data

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- Disengage and lower the floor panel before you close the
luggage compartment lid again.
Storing the replaced wheel
- Place the replaced wheel inside the spare wheel well in
the luggage compartment .
Tighten the knurled retaining screw clockwise to secure the wheel in place.
- Disengage and lower the floor panel before you close the
luggage compartment lid again.
& WARNING
Loose items in the passenger compartment can cause serious
personal injury during hard braking or in an accident .
• Never store the spare wheel or jack and tools in the passenger
compartment.
• Always store all jacking equipment, tools, and the spare wheel
in the luggage compartment.
• Tighten the knurled retaining screw for the spare wheel
securely.
[ i] Tips
Check the inflation pressure of the spare tire periodically to keep the
tire ready for use. •
Changing a wheel
Before changing a wheel
Observe the following precautions for your own and your
passenger's safety when changing a wheel.
- After you experience a tire failure, pull the car well away
from moving traffic and try to reach level ground before
you stop :::;. & .
- All passengers should leave the car and move to a safe
location (for instance, behind the guardrail) :::;,& .
- Engage the parking brake to prevent your vehicle from
rol ling unintentionally :::;.& .
- Move selector lever to position P :::;. & .
-If you are towing a trailer: unhitch the trailer from your
vehicle.
- Take the jack and the spare tire out of the luggage
compartment:::;.
page 342.
& WARNING
You or your passengers could be injured while changing a wheel if
you do not follow these safety precautions:
• If you have a flat tire, move a safe distance off the road. Turn off
the engine, turn the emergency flashers on and use other warning
devices to alert other motorists.
• Make sure that passengers wait
in a safe place away from the
vehicle and well away from the road and traffic.
• To help prevent the vehicle from moving suddenly and possibly
slipping off the jack, always fully set the parking brake and block
the wheel diagonally opposite the wheel being changed. When one ...

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•
& WARNING (continued)
front wheel is lifted off the ground, placing the Automatic Trans­
mission in "P" {Park) will
not prevent the vehicle from moving.
• Before you change a wheel , be sure the ground is level and firm.
If necessary, use a sturdy board under the jack.
• After installing the spare wheel, make sure that you replace the
flat tire/wheel in its storage area properly and tighten the knurled
retaining screw securely. •
Changing a vvheel
When you change a wheel, follow the sequence described
below step-by-step and in exactly that order.
1. Act ivate the vehicle jack mode (only vehicles with Adap ­
tive Air Suspension) ~
page 186.
2. Remove the decorative wheel cover*. For more details
see also ~
page 346, "Decorative wheel covers".
3. Loosen the
wheel bolts ~ page 346.
4. Locate the proper mounting point for the jack and align
the jack below that point~
page 347.
5. Lift the car with the jack~ page 347.
6. Remove the wheel with the flat tire and then install the
spare
~ page 348.
7. Tighten all wheel bolts lightly.
8.
Lower the vehicle with the jack.
9. Use the wheel bolt wrench and
firmly tighten all wheel
bolts
~ page 346.
10. Replace the decorative wheel cover*.
11. Deactivate the veh icle jack mode (only vehicles with
Adaptive Air Suspension)~
page 186.
& WARNING
Always read and follow all WARNINGS and information => & in
"Raising the vehicle" on
page 347 and => page 349. •
After changing a vvheel
A wheel change is not complete without the doing the
following.
- Store and secure the wheel you replaced in the spare
wheel well.
- Replace the tools and the jack in their proper location.
-Check the tire pressure on the spare wheel immediately
after mounting it.
- As soon as possible, have the
tightening torques on all
wheel bolts checked with a torque wrench. The correct
tightening torque is 90 ft lb (120 Nm).
- Have the flat tire
replaced as soon as possible.
[ i] Tips
• If you notice that the wheel bolts are corroded and difficult to
turn while changing a tire, they should be replaced before you check
the tightening torque.
• Drive at reduced speed until you have the tightening torques
checked. a
Do-it-yourself service

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& WARNING
• You or your passengers could be injured while changing a
wheel if you do not follow these safety precautions:
- Positioning the jack under the vehicle at any other place than
those indicated above may damage the vehicle or may result in
personal injuries.
- A soft or unstable surface under the jack may cause the
vehicle to slip off the jack. Always provide a firm base for the
jack on the ground.
If necessary, use a sturdy board under the
jack.
- On hard, slippery surface (such as tiles) use a rubber mat or
similar to prevent the jack from slipping.
• To help prevent injury to yourself and your passengers: -Do not raise the vehicle until you are sure the jack is securely
engaged.
- Passengers must not remain in the vehicle when it is jacked
up.
- Make sure that passengers wait in a safe place away from
the vehicle and well away from the road and traffic.
- Make sure jack position is correct, adjust as necessary and
then continue to raise the jack.
[ i ] Tips
Before changing the wheel, you must activate the jacking mode, so
that the automatic controls for the Adaptive Air Suspension do not
make it more difficult to lift the vehicle with the jack =>
page 186. •
Taking the wheel off /installing the spare
Follow these instructions step-by-step for changing the
wheel
Fig . 263 Changing a
wheel: using the
screwdriver handle
(with the blade
removed) to turn the
bolts
Fig . 264 Changing a
wheel: alignment pin
inside the top hole
After you have loosened all wheel bolts and raised the
vehicle off the ground, remove and replace the wheel as
follows:
Removing the wheel Use the hexagonal socket in the screwdriver handle to
completely remove the topmost wheel bolt and set it
aside on a
clean surface ~ fig. 263. .,_

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• Have the wheel bolt tightening torque checked with a torque
wrench as soon a s possible by your authorized Audi dealer or a
qualified service station .
• With steel and alloy wheel rims , the wheel bolts are correctly
tightened at a torque of 90
ft lb (1 20 Nm ).
• If you notice that the wheel bolts are corroded and difficult to
turn while changing a tire , they should be repla ced before you check
the tightening torque .
• Replace the flat tire with a new one and have it installed on your
vehicle as soon as possible . Remount the wheel cover.
Until then , drive with extra care and at redu ced speeds .
& WARNING
• If you are going to equip your vehicle with tires or rims which
differ from those which were factory installed , then be sure to read
the information
=> page 329 , "New tires and replacing tires and
wheels" .
• Always make sure the damaged wheel or even a flat tire and
the jack and tool kit are properly secured in the luggage compart ­
ment and are not loose in the passenger compartment .
• In an accident or sudden maneuver they could fly forward ,
injur ing anyone in the vehicle .
• Always store damaged wheel , jack and tools securely in the
lugg age compartment . Otherwise , in an accident or sudden
maneuver they could fly forward, cau sing injury to passengers in
the vehi cle .
0 Note
Do not use commercially available ti re sealants . Otherwise, the elec ­
t rical components of the tire pressu re monitor ing sys tem* will no
longer work properly and the sensor for the tire pressure moni ­
to ring system wi ll hav e to be r eplace d by a qua lifi ed wo rkshop. •

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•
Conn ect POSITIVE (+ ) to PO SITIVE (+ ) (r ed )
- Open the red cover on the pos itive pole => page 358,
fig. 270.
1. Connect one end of the positive cable (red) on the
jump
start bolt=>
page 358, fig. 27 1 G) (Bolts under red cover
= "positive") of the vehicle to be started @.
2. Connect the other end to the positive terminal@ of the
booster battery ®·
Conn ect NEGATIVE (- ) to NEGATIVE (-) (black )
3. Connect one end to the negat ive termi nal 0 of t he
boos ter battery ®·
4 . Connect the other end of the negative cable (black) to the
jump sta rt bolt 0 (Bolts with hex head = "n egative") of
the vehicle to be s tarted @.
Startin g th e e ngin e
-Start the engine of the veh icle w ith the booster battery .
Run t he engine at a moderate speed .
- Start engine with discharged ve hicle battery in the usual
ma nner.
- If the engine fails to s tart: do not keep the star ter
cranking for longer than 10 seconds. Wait f or about
30 seconds and then try again.
- With engine running, remove jumper cables from both
vehicles in the exact reverse order.
- Close the red cover on the positive pole.
The battery is vented to the outside to prevent gases from entering
the vehic le interior . Make sure that the jumper clamps are well connected with their
metal parts in full contact with the battery
t erminals .
& WARNING
To avoid seriou s per sonal in jur y a nd d amage to the vehicle , heed
a ll wa rning s and in stru ction s o f th e jum per ca ble man ufa cturer . If
in doubt , call for ro ad serv ice.
• Jump er c able s must b e lo ng eno ugh so that the vehi cle s d o not
touch .
• When conne cting jumpe r cable s, ma ke sure th at the y cann ot
g et caught in an y mo ving p arts i n the engine comp art m ent .
• Before you che ck anyth ing in the en gin e com partm ent , a lwa ys
r ea d and h eed all W ARNIN GS~ pag e 293, "E ngine compa rtm ent ".
0 Note
Improper hook -up of jumper cables can ruin the generato r.
• Always connect POSITIVE(+) to POS ITIVE( +), and NEGATIVE( -) to
NEGATIVE( -) ground post of the battery manager control unit.
• Check that al l screw p lugs on the battery ce lls are screwed in
firm ly . If not, tighten plugs prior to connecting clamp on negative
battery termi nal.
• Please note that the procedure for connecting a jumper cab le as
described above applies specifical ly to the case of your vehicle
being jump started. When you are giving a jump start to another
vehicle, do
not connect the negative(-) cable to the negative (-1
terminal on the discharged battery©~
page 358, fig. 271. Instead,
securely connect the negative ( -1 cable to either a solid metal
component that is firmly bolted to the engine b lock or to the engine
block itself . If the battery that is being charged does not vent to the
outside, escap ing battery gas could ignite and exp lode! •
Do-it-yourself service

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- Attach the winch hook to the rear towline eye previously
installed.
[ i ) Tips
Check carefully to make sure the hook -up is secure before moving
the ca r up the flatbed t ruck ramp. •
Lifting vehicle
Lifting with workshop hoist and with floor
jack
The vehicle may only be lifted at the lifting points illus ­
trated.
~ ~
\ ======== ======= ~ ;,
Fig. 276 Front lifting
point
- Read and heed WARNING::::,& .
Fig. 277 Rear lifting
point
-Locate lifting points::::, fig. 276 ::::, fig. 277.
- Adjust lifting arms of workshop hoist or floor jack to
match vehicle lifting points.
- Insert a rubber pad between the floor jack/workshop
hoist and the lifting points.
If you must lift your vehicle with a floor jack to work underneath, be
sure the vehicle is safely supported on stands intended for this
purpose.
Front lifting point
The lifting point is located on the floor pan reinforcement about at
the same level as the jack mounting point:::::, fig. 276 .
Do not lift the
vehicle at the vertical sill reinforcement.
Rear lifting point
The lifting point is located on the vertical reinforcement of the lower
sill for the on board jack:::::, fig. 277.
Lifting with vehicle jack
Refer to :::::, page 347 .

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& WARN ING (continued )
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never rea ch into the area around or to uch the
radiator fan . It is temperature controlled and can sw itch on
suddenly -even when the engine is off and the ignition key has
been removed . The radiator fan switches on automatically when
the coolant reaches a certain temperature and will continue to run until the coolant tempe rature drops .
• Always remove the ignition key before anyone gets under the
vehi cle .
• Always support your vehicle with safety stands if it is neces ­
sary to work underneath the vehicle . The jack suppl ied with the
vehicle is not adequate for this purpose and could collap se
causing serious personal injury .
• If you must work underneath the vehicle with the wheels on
the ground, always make sure the veh icle is on level ground , that
the wheels are always securely blocked and that the engine
cannot be sta rted .
• Always make sure the tr ansmission selector lever (automatic
transmission) is in "P" (Park position ) and the p ark brake is firmly
applied.
W For the sake of the environment
• Cha ng ing the e ngin e sett ings will a dverse ly aff ect em iss ion
levels. This is detrimenta l to the environment and increases fuel
co nsump tion .
• Always observe environmenta l regu lations when disposing of
o ld eng ine oil, u sed bra ke flu id, d irty eng ine coo la nt, spent batter ies
or worn out tires.
• Undeployed airbag modul es and pretensioners might be classi ­
fied as Perchlorate Material -specia l handling may apply, see
www .d tsc.ca .gov/ hazardouswaste/pe rc h lora te . W hen t he vehicle or
parts of the restraint s ystem including airbag modules safety be lts
with pre tensio ners are sc ra p pe d, a ll ap pl ica ble laws and reg ula- tions must be observed. Your authorized Audi dea
ler is familiar with
t hese requi reme nts and we reco mmend th at you h ave your dealer
perform th is serv ice for you. •
Additional accessories,
modifications and parts replacement
Additional accessories and parts
replacement
A lways consult an author ized Audi dea ler before
pur chasin g access orie s.
Y our vehicle incorporates the latest safety design featu res ensuring
a hi gh standa rd of active a nd passive sa fety .
T his saf ety could be com promised by non -approved changes to th e
vehic le . Fo r thi s reason, i f parts have to be replaced, p lease obse rve
th e fo llow ing po ints wh en insta lling add it io na l acc essories:
Approved Audi accessories and genuine Audi parts are avai lable
from autho rized Audi dea lers .
T hese dealers also have the necessary faci lities, tools and trained
spec ia lists to ins tal l the part s and accessorie s prope rly.
& WARNING
Using the wrong spare parts or using non -approved accessories
can cause serious personal injury.
• Use only accessorie s expressly approved by Audi and genuine
Audi spare parts
• These parts and accessories have been specially designed to
be used on your vehicle .
• Never install accessories such as telephone cradles or
beverage holders on airbag covers or within the airbag deploy-

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Climate controls
Air distribution ... .... .... ........ 107
Air outlets ..... .. .... .... .... .... 108
Air outlets (rear) .... ...... ... ..... 109
Air recirculation .. .... .... ... .... . 107
AU TO (standard setting) ........ .. . 105
Basic se ttings ... .. ... .... .. .. .... 111
Center ai r vent .... .... ... ... ..... 112
Contro ls ..... .... ... .. .... .. .... 104
Defrosting/defogging ..... ... .... . 107
Descr iption ... ... .... .... ...... .. 102
ECON operation .. ..... .. .... .... . 112
Fan . .... ...... .. .... ..... .. ... .. 106
Heated seats , front ..... .. ...... .. 110
Key coded set ting ................ 102
Recircu lation mode (automatic) ..... 112
Recommended settings ... ... .... . 102
Residual heat .... .... .... ...... .. 105
Setting the temperature ..... . .... . 106
SETUP . ......... .... .... ... .... . 112
Solar operat ion ...... .... .. . .... . 113
Switching on and off ...... .. . .... . 105
Synchronization ...... .... ... .... . 112
Using climate contro l economically . 109
Clock ... .... .... .... .... ... .... .... . 13
Closing Pow er sunroof .... ... ... ... .. ..... 59
Coat hooks . . . . . . . . . . . . . . . . . . . . . . . . . 101
Co ld tire inflation pressure .... ...... . 321
Compass m irror . .... .... ... .... .... . 78
Comp liance ... .. ........ ... .. ...... 375
Consumer Information .. ........ . 203, 372
Contacting NHTSA ....... ... .. .. .... 203
Controls and equip­
ment Safety first
Continuously Variable
Transmission (CVTJ D
See multitronic® . ........... ..... 16 1
Conven ience key ... .. .... .... ... .... . 52 Damping
Driver messages ...... .... .... ... 1 20
See Adaptive Air Suspension ...... . 184
Locking vehicle ... .... .... .... .... . 53 Data .. ... .... .... .... ... .... .... ... 369
STAR T button . ..... ........ ...... 118
Data reco rder . ... .... .... .. . .... .. .. 262
Star ting engine .. ... .... ... .. .... 118
Date display ....... .... ........ ... ... 13
STO P button ... .. .... ..... .. ..... 1 19
Switching engine off . ....... .... .. 119
Switching on ignition . ...... .. .... 118
Un lock ing vehic le ........ .... .... . 53 Dayti
me runn ing lights ... .... .... .. 63, 64
Dec laration of compliance
Adaptive Cruise Control .... ....... 375
Audi side ass ist ... .... ...... ... .. 375
Convertible chi ld s eats
Cell phone package ... .... .... .. . . 375
How do I prop erly install a convertible
chi ld sea t in my vehicle? .. ...... . 244 Conve
nience key ...... ... .... .. .. 375
E lec tronic immobil izer . ... .... .. .. 375
Safety instruct ions ... .. ....... .... 244
Homelink® universal remote control 375
Conver tible locking re trac tor
Activating .... ...... .... ..... .... 250 Remote control key ..
.... . .... .. .. 375
de f
Deactivati ng . .... ... .... .... .... . 251
Using to secure a chi ld sa fety seat . 248,
250
Co olan t system ..... .. .. .... .... .... 307
Coo ling System
E xpans ion tank .... ..... .. .... .... 308
Cru ise control What does this mean when it appea
rs in
t he trip odomet er disp lay? .. ... .... 14
De fect ive light bu lb warning ...... ... .. 25
D efrosting/defogging the windows ... . 107
Defrosting /defogging windows ....... . 108
Dete rmin ing cor rec t load li mit .. ...... . 3 26
Changing sp eed .. .... ...... ... ... 125
P resetting your speed ....... .... .. 125 Digita
l clock ...... ..... .... .... ...... 13
Digi ta l compass ... .. .... .... .... .. .. . 78
Switching off .................... 125 D
igita l speedometer . ...... .. .... ..... 25
Switching on .... ... .... ... .. .... 124 D
imensions .. .... .... ... .... .... ... 368
Warning/indicato r lights .. .... .... .. 20 Dipstick
See also Adaptive Cruise Control ..
.. 127 Readi
ng th e dipstick p roper ly ..... . 305
Cruising range ... .... .... .... .... ... . 38 Distance control sys
tem
Cupholder ...... ..... .. .... .... .. 95, 96
See Adaptive C ru ise Contro l ..... ... 127
Vehicle operation Vehicle care Do-it-yourself service Technical data

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quattro®
See All Wheel Drive ... .... ........ 268
Question
R
What happens to unbelted occupants? .
207
Why safety belts? ... .... .... .... .. 205
Radiator fan .. . .... .. .. .... ....... .. 310
Rain sensor ... .... .... .... .......... 71
Rain sensor defective 34
Reading lights
Front .... ... .... .... .... ..... ... .
68
Rear ..... .. .. ...... .. ... .. ... ... . 69
Rear ashtray . .... .... .... ... .... ... .. 97
Rear fog ligh ts .... .... ... .... ..... ... 65
Rear lid
Escape handle .... .... ... .... ....
342
Open ing and c losing . .... ... ..... .. 50
Valet key function .. ..... .... .... .. 44
Rear light
Defective . .... .... ... .... .. .. .... .
25
Rear seat bench ...... .... ..... .... ... 88
Rear View
See Rear-view camera . ... .... .... . 171
Rear view mirror
Inside rear view mirror . ............
75
Rear window blind
Settings ..... .... .... ... .. .. .... .
71
Rear window defogger .. .... .... .... . 108
Rear window shelf ... .... ...... ...... 86
Controls and equip­
ment Safety first
Rear
-view camera .. . .. .. .... .. .. 171, 173 Safety belt position . ... .. .... .. .. .... 210
Parking mode 1 .. .... ...... ..... . 175 Safety belt height adjustment . .... . 212
Parking mode 2 .. .. ........ .... .. 177 Safety belts worn by pregnant women
Red symbols .... .... .... .... .... ... .
29 21
1
Refuel ling ... .... .... .... .... .... ... 297 Safety belt prete nsioner
Release lever for hood .. ... ......... .
300 Service and disposal . ...... .... ... 214
Remote control garage door opener Sa
fety b elt pretensioners . .... .... .... 213
(Homelink®) ...... .... .... ... .. 188 Safety belt warning light ... .. .... . 19,205
Remote control key ... .... .... .... .... 42 Safety belts . .... .... .... ... .... .... 209
Un locking and locking ... .... .... .. 46 clea ning .. .... .... ... .... .... ... 293
Remote rear lid re leas ,e ... .... .... .... . 50 Danger to passengers who do not wear a
Repair manua ls .... ... ............ ..
372
Repa irs
Airbag system .. ...... .... .... ...
229
Replacing a fuse .... .... .... .... .... 351
safety belt .. ........ .... .... ... 207
Fastening ...... ..... .. .. ... ... .. 209
height adjustment . .... ... .... .... 212
Improper ly worn ..... ... . .. .. .... 213
Not worn . .... .... .... .... ...... . 207
Replacing light bulbs ...... ... ... .... 355 Safety belt position ... .... .... .... 210
Replaci ng tires and wheels . ...... .... 329 Safety instructions .... .... .... ... . 208
Reporting Safety Defe cts . ........ 203, 204 Securing child sa fety sea ts ..... ... . 248
Reset button . ...... .. .. .... .... .... . 14 Specia l considera tions fo r preg nant
Res idual heat . .... .... ... .... .... ...
104 women . ........ .... .. .... .... . 211
Retractor .. ... ... .. ...... .... .... .. 209 Unfastening ........ ........ ..... 212
Rims Warning/indicator light
....... ... .. 205
Cast alloy .. ...... .... .... ... .... 287
Roof rack .. ..... ... .... ... ... ... ... . 93
Why YOU MUST wear them . ..... .. 205
Worn properly . .... ... ... .. ...... 208
Loading ... ... .... .... .... ... .... . 94 Safety comp liance sticker .... .... .... 366
Mounting locat ions . ...... .... .... . 94 Safety equipmen t ... .... .... .... ... . 194
Roof weight .... .... ... ..... .... ... .. 94 Safety features for occupant restraint and
protection ...... .... .... .... ... .
194
s Sa fety guide lines
Seat adjus tment ...... .... .... .. . ..
80
SA FE .... ... .... ...... ...... .... ... . 14
Safe driving hab its ...... .... .... .... 194
Vehicle operation Vehicle care Do-it-yourself service Technical data