2009 AUDI S6 sensor

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
with less grip, gradually increase the pressure on the accelerator
pedal until the car starts to move.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads on this wheel, the EDL cuts out tempo ­
rarily. The vehicle remains operational and behaves in the same way
as a vehicle without EDL.
As soon as the brake has cooled down, EDL switches on again auto ­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL working, the drive wheels can spin and reduce your
ability to control your car. Risk of crash!
• The increased safety afforded by EDL does not mean that you
can take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
If a fault occurs in the ABS, the EDL is also not functioning. This is
indicated by the ABS warning light=>
page 21. •
Ant"-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP). When the vehicle starts up and acceler ­
ates, the wheels are prevented from spinning by adjusting the engine power to match the amount of grip available from the road
surface.
How the system works
ASR
performs automatically, i.e. without the driver's intervention.
With the aid of the ABS sensors=>
page 266, ASR monitors the
speed of the driven wheels. If the wheels start to spin, the engine
torque is reduced automatically until the tires find enough grip to
lock onto the road surface. The system is active across the entire
speed range.
Th e ASR works in conjunction with the ABS. If a malfunction should
occur in the ABS, the ASR will also be out of action.
Activating
The ESP is automatically activated when the engine is started and it
performs a self -test . You can activate a deactivated ASR if required
by pressing the =>
page 262, fig. 232 button . When it is activated,
the message
ESP/ASR on appears briefly in the display. Vehicles
with front-wheel drive a deactivated ASR automatically re-activates
itself at a speed of 40 mph (70 km/h) .
Deactivating
You can deactivate the ASR if required by pressing the button (for
less than 3 seconds)=>
page 262, fig. 232. With the ASR deactivated,
the ESP check light comes on, see=>
page 18. The message ASR off
appears in the display as well. On vehicles with front-wheel drive:
deactivation is possible only up to 30 mph (50 km/h) for safety
reasons . Vehicles with all -wheel drive: the ASR can be deactivated
at any speed .
The ASR should normally be activated all the time. Only in certain
exceptional situations when some slip is desirable does it make
sense to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck .

Energy management
Starting ability is optimized
Energy management controls the distribution of electrical
energy and thus optimizes the availability of electrical
energy for starting the engine.
If a vehicle with a conventional energy system is not driven for a
long period of time, the battery is discharged by idling current
consumers (e.g. immobilizer). In certain circumstances it can resu lt
in there being insufficient energy available to start the engine .
Intelligent energy management in your vehicle handles the distribu ­
tion of electrical energy . Starting ability is markedly improved and
the life of the battery is extended.
Basical ly, energy management consists of
battery di agn osis, idling
current mana gement
and dynami c en ergy management .
Batter y diagn osis
Battery diagnosis continuously deter min es the state of the battery.
Sensors determine battery vo ltage, battery current and battery
temperature . This determines the cu rrent state of charge and the
power of the battery .
Idling c urrent man ag em en t
Idling current management reduces energy consumption while the
vehicle is standing. With the ign it ion switched off, it controls the
energy supply to the various electrical components. Data from
battery diagnos is is considered .
Depending on the battery's state of charge, individual consumers
are gradually turned off to prevent excessive discharge of the
battery and thus maintain starting capability.
Dynamic energ y managem ent
While the vehic le is being driven, dynamic energy management
distributes the energy gene rated acco rding to the needs of the indi -
Controls and equip­
ment Safety first Vehicle operation
In
te llig ent tec hn olo gy
vidual components . It regulates consumption, so that more e lec­
trical energy is not being used than is being ge nerated and ensures
an optimal state of charge for the battery.
[ i ] Tips
• But even energy management cannot negate the limits of
physics. Consider that the power and life of a battery are limited .
• I f starting ability is threatened, you are informed by a warning
=> page 270, "Drive r notifica tion i n the instrument cluster
display" .•
What you should know
The highes t pri ority is given to main tain ing starting capa ­
bility.
The battery is severe ly taxed in short-distance driving, in city traffic
and during the co ld time of year. Abundant electrical energy is
required, but only a little is generated. It is also critical if the engine
is not running and elect rica l components are turned on. In this
instance energy is being consumed but none is being generated .
I t is in precisely these situations that you will notice energy manage ­
ment active ly regula ting the distr ibut ion of energy.
Vehicle stands fo r an extended period
If you do not drive your vehicle over a period of several days or
weeks, electrical components are gradually cut back or switched off.
This reduces energy consumption and maintains starting capability
over a longer period.
Take into considerat ion that when you un lock your veh icle, some
convenience functions, such as the remote key or power seat
adjustment, may not be availab le . T he conven ience functions will be
available again when you turn on the ignition and start the engine.
Vehicle care Do-it-yourself service Technical data

_____________________________________________ C_h_ e_ c_k _in ~ g_ a_n _d_ f_il _li _n ~g __ lfflll
•
T o obtain an accurate reading, the engine must be switched off .
The expansion tank in your vehic le is equipped with an e lectric
coolant level sensor.
When the coolant level is too low, the warning light in the Auto ­
Check System ~
page 37 will blink until you add coo lant and the
level has been restored to normal. Even though there is an electric
coolant level sensor, we still recommend you check the coo lant level
from time to time .
Coolant loss
Coolant loss may indicate a leak in the cooling system. In the event
of coolant loss, the cooling system should be inspected immedi­
ately by your authorized Audi dealer . It is not enough merely to add
coo la nt.
In a sealed system, losses can occur only if the boiling point of the
coolant is exceeded as a result of overheating .
0 Note
Do not add any type of radiator leak sealant to your vehicle's engine
coolant . Adding radiator repair fluid may adversely affect the func­
tion and performance of your cooling system and could result in
damage not covered by your New Vehicle Limited Warranty. •
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engine compartment,
always read and heed all WARNINGS~ & in "Working in
the engine compartment" on
page 301.
- Turn off the engine.
- Let the engine cool down. Place
a thick rag over the coolant expansion tank
~ page 308, fig. 242 and carefully twist the cap counter­
clockwise ~& .
Add coolant.
- Twist the cap on again
tightly .
Replacement engine coolant must conform to exact specifications
~ page 307, "Coolant". Even in an emergency, if coolant additive
G12++ , G12 + or G12 is not availab le, do not use a different additive .
Use plain water instead until you can get the correct add itive and
can restore the correct ratio. This shou ld be done as soon as
possible.
If you have lost a considerab le amount of coolant, then you should
add cold antifreeze and cold water only when the engine is cold .
A lw ays use
new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Excess coolant will be
forced out through the pressure relief valve in the cap when the
eng ine becomes hot.
& WARNING
• The cooling system is under pressure and can get very hot.
Reduce the risk of scalding from hot coolant by following these
steps.
-Turn off the engine and allow it to cool down .
- Protect your face , hands and arms from escaping fluid and
steam by covering the cap with a large , thick rag.
- Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light , downward pressure on the top
of the cap.
- To avoid being burned, do not spill antifreeze or coolant on
the exhaust system or hot engine parts. Under certain condi-
tions , the ethylene glycol in engine coolant can catch fire . ...
Vehicle care
I t •

Tires and wheels -
----------------------
Tire pressure indicator appears
The tire pressure indicator in the instrument cluster
informs you if the tire pressure is too low or if there is a
sys tem malfunc tion.
en
~ 0 ..:, ;g
0 g 0 ..:, ;g
F ig . 25 2 Displa y:
underinflation warning
Fig . 253 Displ ay :
Sy stem malfunction
Using th e ABS sensors , th e t ire pr essur e monitoring system
c o m pares the tire tread ci rcu mference and vi bration character istics
of the individua l tires . If the pressure decreases in one or mor e tires,
th is is ind icated in the inst rumen t cl uster w ith a warning symbol,
and a message=> fig. 252. The driver message in the display goes
ou t af ter 5 sec onds. T he driver message can be dis pl ayed again by
pressing the [ CH ECK ] button. If only on e tire is affected, the display
will indicate its position . T
he tire pressure monitoring must be reset via MMI each time the
press ures are adjus ted (e .g . when swi tchi ng between par tial and
fu ll load pressu re) or after changing or replacing a tire on your
veh icle =>
page 338. You ca n find the recom mended tir e pres sures
for your vehicle on the label on the driver's door pillar=>
page 32 1.
Tire tread circumference and vibration characteristics can change
and cause a tire pressure war ning if:
• the tire pressu re in one or more t ires is too low,
• t he tire has st ructura l damage,
• the tire pressure was changed, wheels rotated or replaced but
t he TP MS was no t r eset =>
pag e 338 .
Warning symbols
• ~ Loss of pressur e in at le ast one tire=>&. Check the tire or tires
and replace or repair if necessary . T he indicator light in the
i nstrument cluster also illu mi nat es =>
page 16 . Che ck/cor rect th e
p ressures of al l four t ires and reset TPM S via MMI.
T (Ti re Pre ssure Mo nitorin g System)
Tire pressure! System
malfunction .
If appears after switch ing the ign it ion on or
w hi le drivi ng => fig . 253 an d the i ndica tor lig ht in th e in stru ment
c luster blinks for approximately one minute and the n stays on, there
i s a sy stem malfunction . See your authorized Au di d ealer as soon a s
possible .
& WARNING
• If the tire pressure indicator appears in the instrument cluster
display, one or more of your tires is significantly under -inflated.
Reduce your speed immediately and avoid any hard steer ing or
braking maneuvers. Stop as soon as possible and check the tires
and their pressures. Inflate the tire pressure to the proper pressure
as indicated on the vehicle's tire pressure label =>
page 321.
Driving on a significantly under-inflated tire causes the tire to over­
heat and can lead to tire failure . Under- inflation also is l ikely to
impair the vehicle's handling and stopping ability .
~
Vehicle care I I irechnical data

11111.___W_ h_ a _ t_d_ o_ l _d _o_ n_ o_ w_ ? ______________________________________________ _
• 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. •

-Fuses and bulbs Pffl..._ _____________________ _
[ i J Tip s
You are wel l advised to keep a supply of spare fuses in your vehicle .
Fuses with the proper ampere ratings are availab le at your Audi
dea ler. •
Fuse Location , Instrument Panel left
Fig . 267 Fuse pa nel
l ayo ut
Some of the equipment items listed are optional or only ava ilable on
certain model configurations .
Note th at t he fo llo wi ng t able i s acc urat e at th e time of goin g to
pr ess and is subject t o ch ang e. In th e eve nt of d iscrep ancie s, th e
labe l on th e in side of th e cover always ta kes prece de nce .
The power seats are protected by cir cuit br eaker s, which automati­
cally reset after a few seconds after the overload has been reme ­
died.
N o. Equipm ent
1 Not used
2
3
4
Not used
Engine management
Oil level sensor Amps
5
5
No
.
5
6
..
7
8
9
10
1 1
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Equipm ent
Climate cont rol , tire pressure monitoring sys ­
tem
Electronic Stabilization Program (ESP), clutch
sensor
Diagnostic connector
Homelink control unit
Automa tic dimming interior mirror
Adaptive Cruise Control
Not used
Diagnostic connector
Switch modu le steering column
Not used
I nstrument c luster, control module Ga teway
Telephone, cell phone E lectronic Stabilization Program (ESP)
Headlight electronics, left -side
Rain sensor
Heated washer nozzles
Seat adjustment (driver)
MMI display
E lectromechanica l parking brake
Not used
Not used
Not used
N ot used
Not used Amps
5
5
5
5
5
5
10
10
10
5
10
5
5
5
10
5
5
-

-Alphabetical index
---=--------------------------------
A
A . ccessones . . . . . . . . . . . . . . . . . . . . . . . . 374
Adapter for cupholder . . . . . . . . . . . . . . . . 95
Adaptive Air Suspension .. .... ... .... 184
Automatic mode . . . . . . . . . . . . . . . . . 185
Description . . . . . . . . . . . . . . . . . . . . . 184
Dynamic mode . . . . . . . . . . . . . . . . . . 185
Jacking mode when changing a flat tire .
186
Lift mode . . . . . . . . . . . . . . . . . . . . . . . 185
Setting the driving modes .. .... ... 185
Standard mode . . . . . . . . . . . . . . . . . . 185
Trailer towing mode ... .... .... ... 186
Warning/indicator lights ........... 20
Adaptive Cruise Control . . . . . . . . . . . . . . 127
Changing speed .. ........... .... 131
D. . f . river in ormat1on . . . . . . . . . . . . . . . 135
Driver interven tion prompt ........ 138
Driving in traffic ...... .... ...... . 128
Driving program ...... .... .... ... 139
Error messages . . . . . . . . . . . . . . . . . . 137
Open road . . . . . . . . . . . . . . . . . . . . . . 128
Override 128
Request for driver to assume control 128
Save speed . . . . . . . . . . . . . . . . . . . . . . 130
Setting distance . . . . . . . . . . . . . . . . . 133
Setting time interval .. .. ....... ... 133
Settings . . . . . . . . . . . . . . . . . . . . . . . . 139
Specia l driving situations .. .. .. ... 140
Status messages . . . . . . . . . . . . . . . . . 137
Switching on and off .. .... .... ... 130
System limits ...... .... .......... 140
Temporarily turning off ... ..... ... 132
warning/indicator lights .... ..... .. 135
Adaptive Light . . . . . . . . . . . . . . . . . . . . . . . 66
defective ......................... 36
Adding
Engine coolant ................ ...
309
Engine oil ... .. ...... ....... ..... 306
Windshield washer fluid .. ...... ... 316
Additional accessories .... .... .... ... 374
Additives
Engine oil
Adjusting
. .. .. ..... .. .... .... ... 306
Instrument cluster i llumination ...... 16
Steering column electrically .. ... .. 115
Steering column manually ......... 114
How many airbags does my vehicle have?
222
How the Advanced Airbag System compo -
nents work together . . . . . . . . . . . . .
223
Important things to know ... .... ... 215
Indicator light .... .... ........... 226
Monitoring .... .... .... ...... .... 226
PASSENGER AIR BAG OFF light ..... 227
Repairs ..... .. .... .... .......... 229
Safety instructions .. ...... .... ... 228
Side airbags . .... .... ............ 231
Side curtain airbags .. ....... .. ... 234
Weight -sensing mat .... ... .... ... 239
When must the system be inspected? . ..
226
All Wheel Drive ... .... .... .. . .... .. . 268
Ad' . f Justing ront seats .. .... .... .... ... 80 All h 1 oy w ee s ....................... 287
Air conditioning
See Climate controls ... ...... ... . .
102
Airbag
Warning/indicator lights ..... ......
18
Airbag system . ... .... ........ .. 215, 232
Advanced Airbag System .......... 219
Advanced Airbag System components ..
222
Care ...... .... .... .... .... .... .. 229
Child restraints .................. 240
Children .. .... ..... .. .... .... ... 239
Components (front airbags) .. ... ... 222
Danger of fitting a child safety seat on the
front passenger seat . .... .... ...
217
Disposal . . . . . . . . . . . . . . . . . . . . . . . . 229
Front airbags ....... .... ... .. 219,220
How do the front aiirbags work? .... 224
All- whee l drive
Winter tires
A lternator
333
Malfunction ......... ... .. .... .... 30
Anti -freeze
See Engine coolant system ...... ..
307
Anti-glare inside day-night mirror .... .. 75
Anti -lock brake system
How the ABS system works . .... ...
266
Warning/indicator lights ...... ... ... 21
Anti -Slip Regulation System (ASR)
How the system works . . . . . . . . . . . .
264
Anti-theft systems
Anti -theft alarm system .. ...... ....
54
Electronic immobilizer ............. 44
Tilt sensors ....................... 55

___ A_l.:,. p _h_ a_ b_e _t _ic _ a_l _in _ d_e _x ____________________________________________ _
Doors
Power child safety lock .... .... .... . 51
Power side door closer . . . . . . . . . . . . . 48
Driver information system .... .... .... . 23
Digital speedometer .. ............ . 25
Driver information messages .. .... . 28
Open door or rear lid warning ... .... 25
Outside temperature disp lay .. . .... . 24
Sound system display . .... ...... .. 24
Driver seat
See Seating position . . . . . . . . . . . . . . 196
Driver's seat . . . . . . . . . . . . . . . . . . . . . . . . 81
Driver's seat memory . . . . . . . . . . . . . . . . . 84
Activating remote control key .. ... .. 85
Recalling a seat position .. .... .... . 84
Storing a seat position ..... ... .... . 84
Driving messages .... .... .... ... .... . 28
Driving safely .. .............. ...... 194
Driving time ........ .... ... ........ .. 38
Duplicate key ........................ 41
DVD player for navigation system . . . . . . 91
Dynamic shift program ... .... ... .... 165
E
Easy entry feature 116
Electric seat adjustment
See Power seat . . . . . . . . . . . . . . . . . . . 81
Electromechanica l parking brake
Emergency braking .... ....... .... 123
Malfunction ...... .... .... ...... . 123
Operation . . . . . . . . . . . . . . . . . . . . . . . 121
Parking . . . . . . . . . . . . . . . . . . . . . . . . . 122 Releasing and app
lying ... .. .. .... 121
Starting off with a trailer .. ........ 123
Warning/indicator lights ... .... .... 21
Electronic differential lock (EDU How the system works . .... ....... 263
Warning/indicator lights ....... .... 21
Electronic immobilizer .......... ... 14, 44
Electronic power control (EPC) warning/indicator light ... .... . 18
Electronic speed limiter ..... ....... ... 27
Electronic stabi lization program (ESP)
How the system works ............ 262
Warning/indicator lights ....... .... 18
Emergency braking . . . . . . . . . . . . . . . . . 123
Emergency closing Power sunroof . ... ..... ... .... . 60, 61
Emergency flasher . . . . . . . . . . . . . . . . . . . 67
Warning/indicator lights ........... 19
Emergency locking of doors .. ........ . 50
Emergency starting ........ .... ... .. 357
Emergency towing ... .... .... .... ... 360
Energy management . ....... ... .. ... 269
Battery power . . . . . . . . . . . . . . . . . . . 270
Driver notification 270
Engine Compartment . .... .... .... .... .. 302
Coolant ....... .... ... .... ....... 307
Hood ..... .... .... .... ........ .. 300
Starting .. .... ... .... .... ... 116,117
Starting with jumper cables ... .... 357
Stopping .. .... .... .... .... ...... 118 Engine compartment
Safety instructions . ....... .... ... 301
Working the engine compartment .. 301
Engine coolant system .. ...... ....... 307
Adding coolant .... ....... ....... 309
Checking coo lant level . .... .... ... 308
Checking the engine coo lant level .. 308
Malfunction .. .. .. .. .. .... .... .. . . 31
Radiator fan . .... .... .... .... .... 310
Engine coolant temperature
Temperature gauge ....... .... .... 12
Engine data ...... .... .... ...... .... 369
Engine hood Closing .... .. ... ..... ....... .... 301
How to release the hood . . . . . . . . . . 300
Engine oi l .......................... 303
Adding ... .... .... .... .... ...... 306
Additives .. .... .... .... ... .... ... 306
Changing .. .... .... ... ........ .. 306
Checking the engine oil level ....... 305
Indications and conditions requiring extra
checking .. ...... .... ...... .... 305
Oil consumption . ...... .... .... .. 304
Oil grades .. .... .... ... .... ...... 303
Recommended oil check intervals .. 305
Specification and viscosity .. ..... .. 303
Engine oi l leve l ... .... .... .... ...... . 35
Engine oil pressure
Malfunction ....... ....... ........ 32
Engine oil sensor defective .... .... ... . 35
Engine speed limitation ... .... .... .... 36