2008 AUDI S6 power steering

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 ..
Op ening and closing .......... .
Keys ... ......... ... .. . ··· ·· ····
Powe r locking system .......... .
Rear lid ....................... .
Ch ild safe ty lock . ... ..... ... ... . 5 Advanced Key
..... ........ ... .
Ant i-theft a larm system ........ .
Power w indows ...... ... ... .. .
S lid ing/ti lt ing power sunroof ... .
6 Clear vision ... .... .. ... .. .... . .
9
11
1 1
1 3
1 3
17
25
25
29
30
38
40
42
48
48
52
58
59 Lights
................ ... ... .. .
Interior lights ...... .. ... .... .. .
V is ion ... .. ............. ... ... .
W iper and washer system ...... .
Mirrors .... ... ......... ..... . . .
Digital compass ............... .
Seats and sto rage .. ... ..... .. .
Genera l recommendat ions ..... .
Power seat ...... . .. ....... ... .
Seat memory .... ..... ........ .
Rear seats .. ... .......... .... . .
Head restrain ts ........ ..... .. .
Arm rest ..................... .
Luggage compartment ..... •.. .
Roof rack ....... .. ... ... ....• ..
Cupho lder .................... .
As htray . ... ... ... ......... ... .
Cigarette lighter/socket ......• ..
Storage ... .... .......... ..• ...
Wa rm and cold ............ ... .
Climate control .. .. ... .. .. .. .. .
Basic settings .... .... ...... ... .
O n t he road .... ...... .... ... .. .
Steering ... ..... .. ... ... .. ... . .
Ignition lock and ignition switch .
Sta rting and stopping the engine
Sta rting and stopping the engine
w it h Advanced Key ............ .
Elect romec hani cal pa rking b rake .
Cru ise control ......... ........ . 59
Adap
tive Cruise Contr ol . . . . . . . . 135
61 Speed and distance control system 135
63 Driver information . . . . . . . . . . . . . . 142
66 System limitations . . . . . . . . . . . . . . 147
7 0
Aud i lane assist . . . . . . . . . . . . . . . . 150
7 0
75
76
7 8
82
85
87
87
88
91
92
93
96
96
101
103
104
105
107
1 10
1 10
119
122
122
12 4
125
126
129
132 Lane assist
. . . . . . . . . . . . . . . . . . . . 150
Automatic transm ission ...... . .
tiptronic® (6 -speed automatic
transm ission) ................. .
multitron ic® .... ..... ...... ... .
A udi Parking Sy stem ......... . .
Park Assist Systems .......... . .
Audi Parking System (rear) .... .. .
Audi Parking System (rear, with rear -
view camera) .. .. ... ... .... ... .
Specia l parking situations ..... . .
Settings in the MM I ........... . .
Safety t ips .................... .
Adaptive Air Suspe nsion .. .. .. .
Adaptive Air Suspension and
Damp ing ...... ............... .
Homelink® ......... ..... ..... . .
Unive rsa l remote control ....... . 153
153
159
167
167
167
169
176
1
7 8
1 7 9
182
182
186
186

Instruments and controls
General illustration
G)
0
©
©
©
©
0
©
Power window switches .. ...... .... ... .. ...... . .
Door handle
Memory buttons (driver's seat)
Power locking switch ................ .......... .
Adjuster control for outside mirrors .. .... .. .. ... . .
Air outlets ..... .. .. . ... .... .... .. . ..... ... .... .
Light switch ...... ....... .. .... .... .... .... ... .
Control lever for :
- Turn signal and high b eam .......... ...... ... .
- Lane assist .... .... ... .... .... .... ... .... ... .
G) Control lever for:
-Cruise control .... ... .. .. ... ... .. .... .... ... .
- Adaptive Cruise Contro l .. .. .... .... .......... .
@ Multifunction steering wheel with:
- Horn 63
91
56
83
118
70
74
150
132
135
- Driver's airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
- Shift buttons ..................... ... .... .... 158, 165
- Button for steering wheel hea ting . . . . . . . . . . . . . . 115
@ Instrument cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
@ Switches for
@
@
-Windshield wiper /washer ....... .... .... ... ... .
- Trip computer ..... .. .... .... ...... ....... .. .
St eering lock/ignition /starter sw itch
Buttons for
Reset button for trip odometer ... .. .... .... ... .
- !CHECK] .. ... ... ..... ...... ........ ... .. ... .
78
40
124
15
16
- Instrument lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Controls and equip ­
ment
Instruments and controls
@ MMI Display
@ Depending on equipment , switches for:
- Elect ronic Stabilization Program (ESP)
- Emergency flashers .. ..... .... ... ... ... .... .. .
- Power sunshade ... ..... .... .... ... .... .. . ... .
- Valet key function . .... .... ..... ..... ... .. ... .
@ Buttons for
- Switching MMI display on/off
- Unlocking glove compartmen t
@ Glove compartment .. .... ... ... .. ..... ..... ... . .
@ Front passenger's a irbag ...... .... .... ... ..... . .
@ Climate controls .... . ... .... ... .. .... .... ...... .
@ Ashtray ... .. .... ................... .... ...... .
@ Shift lever for automatic transmission
- 6-speed automatic transmission .... .... ..... .. .
I .
.
® -mu t1trornc ... .. ... .... ... .... .... ... .. .. .. .
@ MMI Terminal
@ Storage with cupholder ... ..... .. .... .... ... .. .. .
@ Elec tromechanical parking brake ......... .. ...... .
@ ISTART ]-~STOP ] button .. ... .... .... .... .... ... .
@ Adjustable steering wheel, depending on equipment:
- mechanical .. .... .. .... ... .... .... .... .. .. .. .
- electrica l ... ...... ... .... ...... ...... .... ... .
@ Data Link Connector for On Board Diagnostics (OBD II)
@ Hood release ... .. .... ... .. .. .... .... .... .. . ... .
@ Switch for
- unlocking the fuel filler door ... ..... ... .... ... .
- unlocking the trunk lid ....... ...... .......... .
I • •
258
73
77
51
107
107
216
112
104
153
161
103
129
126
122
122
29
296
293
58 ...

__________________________________________ ...;A::::::..:: d::..: a~ p~t :..:iv ::_:e:::._: C~ ru~ is~e::....:: C:::.: o~ n:.!t :.'...ro ~ I _ _Jl'II
Adaptive Cruise Control
Speed and distance control system
Applies to vehic les : with Adaptive C ruise Cont rol
Description
The Adaptive Cruise Control driver assistance program is
a combined speed and distance control system.
Fig. 129 Front
bumper: Position of
radar sensor
Any speed between about 20 mph (30 km/h) and about 95 mph
(150 km/h) can be set and he ld with the Adaptive Cruise Con trol. The
system also regulates a pre-set distance from the vehicle ahead
within the limits of the system described.
Driving can be more relaxed, particularly on long trips on interstates
or on other highways that are generally straight.
How does it work?
You can operate the Adaptive Cruise Control using the lever on the
steering wheel column::::> page 137, "How is the speed stored?" and
=> page 140, "How is the distance (time interval) set?".
Con tro ls and eq uip­
ment
Driver information
Important information is brought up in the speedometer and in the
instrument cluster display as the vehicle is being driven
=> page 142, "Driver information" .
What is important for you to know
The Adaptive Cruise Control is set with system -specified limits, that
is, as a driver, you will have to adjust the speed and distance to the
vehic le ahead in some instances=> page 146, "Driver intervention
prompt" and=> page 147, "System limita tions".
& WARNING
Improper use of the Adaptive Cruise Control can cause collisions,
other accidents and serious personal injury .
• Never drive at speeds that are too high for traffic , road and
weather conditions.
• Never follow the vehicle in front so closely that you cannot stop
your vehicle safely. The Adaptive Cruise Control cannot brake the
vehicle safely when you follow another vehicle too closely. Always
remember that the Adaptive Cruise Control has a braking power
that is only about 25% of the vehicle's maximum braking ability,
the automatic braking function cannot bring the vehicle to a stop.
• Never use Adaptive Cruise Control on roads where you cannot
drive safely at a steady speed, including city, stop-and-go or heavy
traffic, on winding roads or when road conditions are poor (for
example, on ice, gravel , in fog , heavy rain or on wet roads that
increase the risk of hydroplaning).
• The radar sensor's
vision can be reduced by rain, snow and
heavy spray. This can result in vehicles driving ahead being inade ­
quately detected or, in some circumstances, not detected at all. If
necessary , take action yourself! ._
Vehicle care I I irechnical data

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

& WARNING
Although the ABS is very effective, always remember that braking
capability is limited by tire traction. Always adjust your driving
speed according to the road and traffic conditions. Do not let the
extra safety afforded by the ABS tempt you into taking extra risks.
The ABS cannot overcome the laws of physics.
[ i] Tips
• If ABS is not functioning properly, a warning light will come on .
See
=> page 22.
• If a fault occurs in the ABS , the EDL is also not functioning. This
is indicated by the ABS warning light. •
Brake assistant
The brake assistant is designed to achieve the optimum
braking effect.
The brake assistant helps to increase the effective braking power
and thus to achieve a shorter stopping distance . If the driver
presses the brake pedal very quickly, the brake assistant automati ­
cally boosts the braking force to the maximum level, up to the point
where the anti-lock brake function (ABS) intervenes to stop the
wheels from locking. You should then keep the brake pedal pressed
until the vehicle has braked to the required speed. The brake assis ­
tant switches itself off as soon as you release the brake pedal.
The brake assistant will not be operative if there is a malfunction in
the ABS.
In vehicles with Adaptive Cruise Control* (ACC), the distance to the
vehicle ahead is continuously calculated using a radar sensor,
within the limits of the system=>
page 135. If the radar system
detects a short distance to the vehicle ahead, the brake system
exerts a small braking force to reduce the brake response time in
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
case of braking. In this way, the brake application can be quickened
and
the stopping distance reduced.
& WARNING
Please remember that the accident risk always increases if you
drive too fast, especially in corners or on a slippery road, or if you
follow the vehicle ahead of you too closely. Increased risk of an accident cannot be compensated for even by the brake assistant,
so always maintain a safe speed.
n
Servotronic® -advanced power
steering system
The power steering systems uses the power of the
running engine to allow precise steering with little effort.
The advanced Servotronic ® power steering system senses the road
speed and electronically adjusts power assistance to provide
comfortable and safe steering response exactly matched to the
vehicle speed.
Power steering will not work if the engine is off. As a result, the
steering wheel will be hard to turn.
The power steering fluid level is checked during the scheduled
maintenance services.
0 Note
If there is an electronic malfunction, servotronic will still function
like a conventional power steering system, providing a constant
steering support force that is no longer proportionate to the vehicle
speed. This is most noticeable when turning the steering wheel at
low speeds (for example when parking), -more effort will be
required than usual.
II-
Vehicle care Do-it-yourself service Technical data

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
• Be aware of the different than usual steering response and
adj ust you r steer ing for ce accordingly.
• Have the problem checked and set right by an Audi dealer as
s o on as possible .
[ i ] Tip s
• When th e engine is running, never hold the steering whee l
turned all the way to the right or to the left for longer than 15 seconds. The power steering pump will overheat the hydrau lic
fluid if you keep ho lding the steering wheel turned all the way. This
is like ly to damage the power steering system.
• If the power steering system should fail entirely, or if the engine
is not running (for example, while being towed), you wil l still be able
to steer the vehicle . However,
considerably more effort will be
required to do so.
• If the power steering system should have a leak, or is not func ­
tioni ng properly, contact your authorized Audi dealer immediately.
• The power steering system requires a specially formulated
hydraulic fluid . The power steering reservoir is the one located most
forward on the left side of the engine compartment~
page 298. The
correct fluid level in the reservoir is important for proper func ­
tioning of the power steering.
App lies to vehic les: with A ll Wheel Dr ive
Dr iving with your quattro®
With All Wheel Drive, all four wheels are driven.
Gen era l i nfo rm ati on
With All Wheel Drive, power is d istr ibuted to all four whee ls. Th is
happens automatica lly depending on your driving style and the
road conditions at the time. See also ~
page 259, "Electronic differ ­
entia l lock (EDU".
Wint er tir es
When driving in the winte r, your vehicle with All Wheel Drive has an
advantage, even with regular tires. In winter road conditions it may
be advisable to mount winter tires (or all -season tires) for improved
driveability and braking: these tires must be mounted on
a ll fou r
wh eel s.
See also ~ page 329, "Winter tires".
Tire chains
Where tire chains are mandatory on certain roads, this normally
a lso app lies to veh icles with A ll Wheel Drive~
page 330, "Snow
chains".
R epl acing w hee ls/t ires
Vehicles with All Wheel Drive must always have tires of the same
size. Also avoid tires with different tread depths . For details see
page ~
page 325, "New tires and replacing tires and wheels" .
Off-R oa d dri ving?
Your Audi does no t have enough ground c learance to be used as an
off -road vehic le. It is therefore best to avoid rough tracks and
uneven terrain as much as possible . Also refer to~
page 269.
& WARNING
Always a djust yo ur driving to r oad and traffi c condition s. Do not
let the e xtr a s afet y affor ded b y All Whee l Dri ve tempt you into
taking extr a risks.
• Although the All Wheel Dr ive i s very effe ct ive , a lwa ys
r e member that braking capacity i s limited b y tire trac tion. You
s hould therefore not d riv e at e xcess iv e speed s on icy or slipp ery
road surfaces .
• On we t road surf aces, be care fu l no t to d riv e t oo fas t beca use
the front whe els could b egin to slid e on top of the w ater (aqu a­
planing ). If t his sho uld occ ur, you will h ave no warn ing from a
s udden incr ease in engine sp eed a s with a front -wh eel drive
v ehicl e. Alwa ys dri ve at spee d s w hic h are s uited to th e road condi ­
tion s - risk of cra sh.
;:i

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
& WARNING (continued )
-Always u se extreme caution to prevent cloth ing , jewelry, or
long hair from getting caught in the radiator fan , V-belt s or
other moving parts , or from contacting hot parts . Tie back hair
before starting , and do not wear clothing that will hang or
droop into the engine .
• Minimize exposure to emis sion and chemical hazards
::::> & .
& WARNING
California Proposition 65 W arn ing :
• Engine exhaust , some of its constituents , and certain vehicle
c omponents cont ain or emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and reproductive harm. In addition , certain fluids contained in vehi cles and certa in products
of component wear contain or emit chemicals known to the State
of California to cause cancer and birth defect s or other reprodu c­
tive harm.
• Battery posts , terminals and related ac cessories conta in lead
and lead compounds , chemicals known to the State of California
to cause cancer and reproductive harms. Wash hands after
handling.
0 Note
When adding f luids, always make sure that they are poured into the
proper container or filler ope ning, otherwise serious damage to
vehic le systems wi ll occur.
ci> For the sake of the environment
To detect leaks in time, inspect the vehicle floor pan from under ­
n eath regu larly. If you see spots fro m oil o r o th e r v eh icle flu ids, hav e
your vehicle inspected by an author ized Audi dea ler. •
Engine compartment
These are th e m ost im porta nt items th at you can ch ec k.
Fig. 231 Typical layout for containe rs, engine oi l d ipstick and engine oil filler
cap
0 Jum p star t connector( +) under a cover,( -) w ith hex
head screw .... ... .... ..... ... .. .. ........... .. 310, 351
@ B rake fluid reservoir ( ) . . . . . . . . . . . . . . . . . . . . . . . . 3 06
© Coo lant e xpansio n tank (- L ) . . . . . . . . . . . . . . . . . . . . . . 304
© Eng in e oil fill er cap ('l=:11) . . . . . • . . . . . . • . . . • . . . . . . . 30 2
© E ng ine oil d ipstick (orange) .............. ....... .
©
0
Power steering reservoir ....................... •.
Windshield/ headlight washer container( ~) ....... . 3
01
263
312 ~

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
& WARNING (continued)
crashes and serious personal injuries . Have worn or damaged tires
replaced immediately.
• Tires age even if they are not being used and can fail suddenly,
especially at high speeds. Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
low speed.
Glossary of tire and loading terminology
Accessory weight
means the combined weight (in excess of those standard items
which may be replaced) of automatic transmission, power steering,
power brakes, power windows, power seats, radio, and heater, to
the extent that these items are available as factory-installed equip­
ment (whether installed or not).
Aspect ratio means the ratio of the height to the width of the tire in percent.
Numb ers of 55 or lower indicate a low sidewall for improved
steering response and better overall handling on dry pavement.
Bead
means the part of the tire that is made of steel wires, wrapped or reinforced by ply cords and that is shaped to fit the rim.
Bead separation means a breakdown of the bond between components in the bead.
Cord
means the strands forming the plies in the tire.
& WARNING (continued)
• Never mount used tires on your vehicle if you are not sure of
their "previous history." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control.
• If you notice unusual vibration or if the vehicle pulls to one side
when driving, always stop as soon as it is safe to do so and check
the wheels and tires for damage . •
Cold tire inflation pressure
means the tire pressure recommended by the vehicle manufacturer
for a tire of a designated size that has not been driven for more than
a couple of miles (kilometers) at low speeds in the three hour period
before the tire pressure is measured or adjusted .
Curb weight means the weight of a motor vehicle with standard equipment
including the maximum capacity of fuel, oil, and coolant, air condi­
tioning and additional weight of optional equipment.
Extra load tire
means a tire designed to operate at higher loads and at higher infla ­
tion pressures than the corresponding standard tire . Extra load tires
my be identified as "XL",
"xi", "EXTRA LOAD", or "RF" on the side ­
wall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capacity of a single axle system, measured
at the tire -ground interfaces .
Gross Vehicle Weight Rating ("GVWR"l
means the maximum total loaded weight of the vehicle.