2008 AUDI S6 differential

Instruments and warning/indicator lights
ately in order to prevent damage to the underbody. The two
warning/indicator 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
low -lying vehicle parts can bottom out as you drive over uneven
ground and be damaged as a result.•
High beam ~D
The ~Dwarning/indicator light illuminates when the high beams are
on or when you use the headlight flasher. For more information
about using the high beams, see:::::,
page 74. •
Cruise control
CRUISE (USA models) lvf (Canada models)
The warning/indicator light illuminates when the cruise control is
activated. •
Anti-lock brake system (ABS )
, (USA models ) / (Canada models)
This warning/indicator light monitors the ABS and the
electronic differential lock (EDL).
The warning/indicator light will come on for a few seconds when the
ignition is switched on . The light will go out after an automatic
check sequence is completed.
There is a malfunction in the ABS when:
• The warning/indicator light does not illuminate when you switch
on the ignition .
• The warning/indicator light does not go out after a few seconds.
• The warning/indicator light illuminates while driving.
The brake system will still respond even without the assistance of
the ABS system. See your authorized Audi dealer as soon as
possible to restore full braking performance.
For more information
regarding the ABS=>
page 262.
The ABS warning light and the brake warning light come on
together. The ABS will not work and you will notice a change in
braking response and performance.
Malfunction in the brake system
If the brake warning light=> page 23 and the ABS warning illuminate
together there may be a malfunction in the ABS, and there may also
be a malfunction in the brake system itself=>& .
In the event of a
malfunction in the brake system the warning/indi ­
cator light
BRAKE (USA models)/ ((j) (Canada models) in the instrument
cluster flashes. By pressing the [
CHECK] button, you can bring up a
driver message which explains the malfunction in more detail.
Please note =>
page 32.
Malfunction in the electronic differential lock (EDL)
The EDL works together with the ABS. The ABS warning light will
come on if there is a malfunction in the EDL system=>
page 259. See
your authorized Audi dealer as soon as possible.
& WARNING
• If the -. (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 brakes (without ABS). You will not have the protec­
tion ABS provides. Contact your Audi dealer as soon as possible. _,,

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Intelligent technology
Notice about data recorded by
vehicle control modu les
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders" .
Some state laws restrict the retrieva l or downloading of data stored
by EDR's that were insta lled in a vehicle for the express purpose of
retrieving data after an accident or crash event without the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehicle-related data during norma l vehicle operation for diagnost ic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehicle speed, direction, braking as well as restraint system use and performance in the
event of a crash or other condition . Stored data can only be read and
down loaded with special equipment .•
Electron ic Stabilizat ion Program (ESP)
General =nformation
The ESP improves the vehicle stability.
(
Fi g. 225 C ente r
co nso le w it h ES P
swi tch
ESP is designed to he lp you maintain vehic le control in situations
where the car approaches the limits of "grip", especia lly when
accelerating and cornering. ESP reduces the risk of skidding and
improves stabil ity under all road conditions .
T he system operates across the entire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP wil l also shut down .
How th e sys te m w ork s
The Anti -Lock Brake System (ABS) , Electronic Differential Lock (EDU
and the Anti-Slip Regulation System (ASR) are integrated in the e lec­
tronic stabi lization program . In addition to the data provided by
these functions, the ESP control unit requires additional measure­ ment data provided by high performance sensors . The rotational
speed of the vehic le about its vertical axis, vehicle acce leration in
the fore-and-aft and lateral directions, the brake pressure and the steering angle are al l measured .

The direction in which the driver wishes to travel is determined with
t he aid of the steering angle and vehicle speed and is continua lly
compared with the actual behavior of the vehicle. If the two do not
match, for example, when the vehic le starts hydrop laning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the prob lem.
The vehicle is then stab ilized by the forces acting on the whee l
during braking. If the vehicle is
oversteering (rear tends to skid out
of the turn), the brakes are mainly app lied on the wheel that is on
the outside of the curve. In the case of a vehicle that is
understeering
(tendency to sl ide out of the curve), the brakes are applied at the
rear wheel that is on the inside of the curve . An acoustic signal indi­
cates when ESP brake application cuts in
~ & .
The system operates across the entire speed range in combination
with the ABS system
~ page 262 . If the Anti -Lock Brake System
(ABS) malfunctions, the ESP wi ll be out of action as well.
Ac tivat ing
When you turn on the eng ine, ESP will automatically be activated
and will perform a se lf -test . As soon as the test is comp leted, the
system is in norma l operating mode.
You can activate a deactivated ESP or deactivated ESP/ASR if required by pressing the~
page 258, fig. 225 button . When they are
activated, the message
E S P/AS R on appears briefly in the display.
D eactiv ating
The ESP should normally be activated al l the time . If necessary, you
can deactivate An ti- Slip Regulation (ASR) or the E lectronic Stabiliza ­
tion Program (ESP) by pressing the button~
page 258, fig. 225.
• Dea ct ivat ing A SR: Tap the button . In certain exceptional situa ­
tions (e.g. driving with t ire chains) , the Anti-Sl ip Regulation (ASR)
can be deactivated ~
page 260. The message ASR off appears in the
display as we ll.
• Dea ctiv at ing E SP/ASR Press the button for more than 3 seconds.
With the ESP/ASR deactivated, the ESP check light comes on, see
Controls and equip­
ment Safety first Vehicle operation
In
te llig ent tec hn olo gy
~ page 19 . The message ES P sw itched off appears in the disp lay as
we ll.
& WARNING
The Electroni c Stabili zation Program i s never thele ss subject to the
la ws o f physics . It is p articularl y import ant t o pay a ttent ion t o th is
f a ct on wet and slippery road s. It is ther efore important tha t y ou
a lw ays a dapt your dr iving to the c ondit ion of th e ro ad and t raffi c
c ondition s. Do n ot allow the inc rea sed safety pro vided b y th e Elec ­
tr on ic S ta bili zatio n Pr ogram sys tem to lull you in to acc epting
add iti onal safet y risk s. C
Electronic differential tock (EDL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
Gener al note s
The electronic differential lock (EDU helps the car to start moving,
accelerate and c limb a gradient on surfaces providing poor or
almost no grip . Without EDL, this would be difficult, if not impos ­
sib le .
How th e sys te m wo rk s
The EDL operates automatical ly . It monitors the rotational speed of
the drive wheels on an axle with the he lp of the ABS sensors
~ page 262 . If a noticeable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground
on
one side),
the spinning wheel is braked, thereby transferring power
to the other drive wheel or whee ls (a ll -whee l drive) . Th is is done up
to a speed of about 60 mph ( 100 km/h). Noises from the brake
system signal that wheel spin is being control led .
Dr iving off
When driving off , always be sure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface
Iii>
•
Vehicle care Do-it-yourself service Technical data

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Driver seat
See Seating position . . . . . . . . . . . . . . 194
Driver's seat . . . . . . . . . . . . . . . . . . . . . . . . 88
Driver's seat memory . . . . . . . . . . . . . . . . . 91
Activating remote control key .. ... .. 92
Recalling a seat posit ion ...... .... . 91
Storing a seat position . ........ .... 91
Driving messages ...... .... .... .... .. 30
Driving safely .... .... .... ...... .... 192
Driving time . ...... .. .... .... .... .... 40
Dup licate key ........... .... ... .... .. 48
DVD player for navigation system . . . . . . 99
Dynamic shift program .............. 163
E
Easy entry feature 124
Electric seat adjustment
S ee Power seat . . . . . . . . . . . . . . . . . . . 88
Electromechanica l parking brake
Emergency braking .. ...... ...... . 131
Malfunction ...... .... .... ....... 131
Operation . . . . . . . . . . . . . . . . . . . . . . . 129
Parking . . . . . . . . . . . . . . . . . . . . . . . . . 130
Rel easing and app lying .... ... .... 129
Starting off with a trailer ... ..... .. 131
Warning /indicator ligh ts ... .... .... 23
Electronic differential lock (EDU
How the system works . . . . . . . . . . . . 259
Warning /indicator lights ....... .... 22
Electronic immobilizer . ... .... .. . .. 15, 51
Electronic power contro l
(EPC) warning/indicator light ...... .. 19 Electronic stabili
zation program (ESP)
How the system works . ...... ..... 258
Wa rning/indicator lights ......... .. 19
Emergency braking . . . . . . . . . . . . . . . . . 131
Emergency closing Power sunroof ......... .... ... . 68, 69
Emergency flasher . . . . . . . . . . . . . . . . . . . 73
Wa rning/indicator lights ..... ...... 20
Emergency locking of doors ....... ... . 57
Emergency starting .. ... .... .... .... 351
Emergency towing ..... .... .... ... .. 354
Energy management ... .. .... .... ... 265
Battery power . . . . . . . . . . . . . . . . . . . 266
Driver notification 266
Engine Compartment . .... .... .... .... .. 298
Coolant ......................... 303
Hood ... .. .... .... .... .... .... .. 296
Starting ...... ........ .... .. 124, 125
Starting with jumper cables .. ..... 351
Stopping ........................ 126
Engine compartment Safety instructions .... ...... ..... 297
Working the engine compartment .. 297
Engine coolant system ........ .... ... 303
Adding coolan t ..... ........ .... . 305
Checking coo lant level .. ....... ... 304
Check ing the engine coolant level .. 304
Malfunction ......... .... .. .. .... . 33
Radiator fan ...... .. .. .... .... ... 306
Engine coolant temper .ature
Temperature gauge ...... ...... ... 13
Engine data .. ... ... .. .... .... ...... 363 Engine hood
Clos ing ... .... ... ... ... .. .... ... 297
How to release the hood . . . . . . . . . . 296
Engine oi l ..... ... .... .... .. .. ..... . 299
Adding ... .... .... .... .... ... ... 302
Additiv es .. ...... ..... .. .. .... ... 302
Changing . ....... .... ... .. ...... 302
Checking the engine oil level . .... .. 301
Indications and conditions requiring extra
checking .. ...... .... .......... 301
Oil consumption ... .... .... .... .. 300
Oil grades . ...... ... ... .... ..... . 299
Recommended oil che ck in tervals .. 301
Specif ication and viscosity .. .. .. ... 299
Engine oil leve l ... .... .... .. .. ..... .. 37
Engine oil pressure Malfunction .. .. .. .... .... .... .... 34
Eng ine oi l sensor defective .... .... .... 37
Environment Break -in period ........ ..... ..... 267
Catalytic converter .... .... ..... .. 268
Disposing of your vehicle battery .. . 311
Driving a t high speeds ............ 269
Driv ing to minimize pollution and noise .
269
Fuel .... .. .... .... .............. 293
Fuel economy ...... .... .. .. .... .. 269
Leaks under your vehicle ....... ... 297
Letting the vehicle stand and warm up ..
270
Proper disposal of drained brake fluid 307
P roper disposal o f drained engine
coo lant ..... .. .. .... .... ....... 305