2010 AUDI S8 technical data

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& WARNING (continued)
• Make sure that the PASSENGER AIR BAG OFF light comes on
and stays on all the time whenever the ignition is switched on.
• If the PASSENGER AIR BAG OFF light does not come on and
stay on, immediately install the rear-facing child safety seat in a
rear seating position and have the airbag system inspected by
your Audi dealer. •
Activating the convertible locking retractor
Use the convertible locking retractor to secure a child
restraint.
Always heed the child safety seat manufacturer 's instruc­
tions when installing a child restraint in your vehicle. To acti­
vate the convertible locking retractor:
- Place the child restraint on a seat, preferably on the rear
seat .
- Slowly pull the belt
all the way out.
- Route it around or through the child restraint belt path
=>& .
- Push the child safety seat down with your full weight to
get the safety belt really tight.
- Insert the belt tongue into the buckle for that seating
position.
- Guide the safety belt back into the retractor until the belt
lies flat and snug on the child safety seat.
Controls and equip­
ment Safety first Vehicle operation
-
You should hear a "clicking" noise as the belt winds back
into the inertia reel. Test the convertible locking retractor
by pulling on the belt. You should no longer be able to pull
the belt out of the retractor. The convertible lock ing
retractor is now activated.
- Make sure that the red release button is facing away from
the child restraint so that it can be unbuckled quickly.
- Pull on the belt to make sure the safety belt is properly
tight and fastened so that the seat cannot move forward
or sideways more than one inch (2.5 cm).
& WARNING
Using the wrong child restraint or an improperly installed child
restraint can cause serious personal injury or death in a crash.
• Always make sure that the safety belt retractor is locked when
installing a child safety seat. An unlocked safety belt retractor
cannot hold the child safety seat in place during normal driving or
in a crash.
• Always buckle the child safety seat firmly in place even if a
child is not sitting in it. A loose child safety seat can fly around
during a sudden stop or in a crash.
• Always make sure the seat backrest to which the child restraint
is installed is in an upright position and securely latched into place
and cannot fold forward. Otherwise, the seat back with the child
safety seat attached to it could fly forward in the event of an acci­
dent or other emergency situation.
• Always read and heed all WARNINGS whenever using a child
restrained in a vehicle is being used
=> page 231. Special precau­
tions apply when installing a child safety seat on the front passenger seat =>
page 208, "Child restraints on the front seat -
some important things to know". •
Vehicle care Do-it-yourself service Technical data

& WARNING (co ntinued )
• Always follow the instructions provided by the manufa ctu rer
of the child restraint you intend to install in your vehicle.
• Never install a child re straint without a prope rly a ttached top
tether strap if the child r estraint manufacturer's in structions
require the top tether strap to be used.
• Improper use of child restraint LATCH lower anchorage points
can lead to injury in a collision . The LATCH lower anchorage points
are designed to withstand only those loads imposed by correctly
fitted child restraints .
• Never mount two child rest raint s ystems on one LATCH lower
an chorage point.
• Never secure or attach any luggage or other item to the LATCH
lower anchorages.
[ i ) Tips
• In Canada, the terms "top tether " with " lowe r universa l anchor­
ages" (or "lower universal anchorage bars") are used to describe the
system.
• In other countries, the term "ISO FIX" is used to describe the lower
anchorages . •
Safety first Vehicle OP-eration
Location Child Safety
Fi
g. 22 6 Sc hematic
o ve rvi ew : LATCH
anc hora ge poin t lo ca ­
ti ons
T he illustrat io n shows the seat ing locations in your vehicle whic h are
equipped wi th the lower anc horages system .•
Description
T h e lower anchorag e positions ar e marked for quick
loc ating.
Vehicle care
Fig. 22 7 Rear se at­
b ack s: loc ato r buttons
for low er anchorag es ..
Do-it-yourselt service iTechnical data

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Fig. 230 Close-up:
fitting the guidance
fixture over the lower
anchorage bracket
The lower anchorage attachment points are located on the
rear seats between the seatback and the seat cushion.
Special guidance fixtures increase the convenience of the
lower anchorages and help protect the seat material from
possible damage when installing child restraints.
Installing the guidance fixtures
-Push down on the seat cushion so that the lower anchor­
ages are visible.
- Hold the guidance fixture with the part number facing
downward and push it in the direction of the arrow onto
the anchorage ~ fig. 230.
- Make sure that each of the two guidance fixtures per seat
snaps into place.
Removing the guidance fixtures
- Remove the child restraint according the child restraint
manufacturer's instructions.
- Push down on the seat cushion so that the lower anchor­
ages are visible.
- Pull off the guidance fixtures from the lower anchorages.
Controls and equip­
ment Safety first Vehicle operation
-
Always remove the guidance fixtures and keep them in a
safe place when not in use.
You may find it easier to install child restraints equipped with hooks
attached to straps without the guidance fixtures in place. If this is the
case, remove the guidance fixtures by pulling them off the anchor­
ages. However, the guidance fixtures can help you to locate the
LATCH anchorages.
& WARNING
Improper use of tether anchorages or lower anchorages can cause
serious personal injury in a crash.
• Always carefully follow the child restraint manufacturer's
instructions for proper installation and use of child restraint
systems.
• Never use the
LATCH or tether anchorages to attach safety
belts or other kinds of occupant restraints.
• Child restraint tether attachments and lower attachments are
only designed to secure a child restraint that has been equipped to
use these anchorages.
• Tether anchorages and lower anchorages are designed to with­
stand only those loads imposed by correctly fitted child restraints.
Under no circumstances can they be used safely for adult or child
safety belts or harnesses.
• Never mount more than one child restraint to a single tether or
to a lower anchorage point. Attaching two child restraints to a single anchorage point can cause the anchorage to fail and cause
serious personal injury in a crash.
0 Note
• Remove the guidance fixtures before folding the rear seatback to
prevent damaging the seat cushion .
• If you leave the guidance fixtures installed for several days, they
could leave a mark on the upholstery on the seat cushion and backrest _.,
Vehicle care Do-it-yourself service Technical data

0 Note
On vehicles with power ind iv id ual rear seats * some criteria mu st be
observed when attaching the child restraint using the
LATCH system:
• To attach the c hild restraint secu rely, the seat must be moved to
the farthest rear position, the seat heig ht set to the lowest pos it io n
and the head res tra int must be adj usted to the ve rt ica l posit io n
=> page 87.
• If a ch ild safe ty seat is attached to one of the rear seats, th is seat
must not be adjusted using the powe r contro ls under a ny circum ­
st ances. The easy en try fu nction for this se at must a lso be dea cti­
vated i n th e M MI
=> page 89. The c hild safety seat as well as the rear
se at can be dam aged by the adjus tment proce ss. •
Tether anchors and tether straps
Fig . 232 Tethe r
anc hors : recess flaps
behind the rear seat ­
backs
Th e te ther anchors for t he t hree rear se ating p osit io ns a re loca ted in
recesses in the rear window shelf=> fig. 232. Vehicles with power
ind iv id ual rear sea ts* are equippe d wit h two te ther anchors .
A tethe r is a straight o r V-s ha ped strap that att aches the top part of
a ch ild rest raint to special anchorage points in the vehicle .
Th e purpose of the te th er is to reduce the fo rw ar d move men t of the
child rest raint in a crash, in order to help reduce the risk of head injury
th at could be cause d by strik in g th e ve hicle in ter io r.
Safety first Vehicle OP-eration
Child Safety
Forward fac ing ch ild restraints manufactured after September 1,
1 999, are required by U.S. feder al regul ations to comp ly wi th new
child head moveme nt pe rformance requ ireme nts . These new per for­
mance re quirements ma ke a tether necessary on most new child
safety seats.
& WARNING
Improper installation of child restra ints will increase the risk of
injury and death in a crash.
• Always follow the instructions provided by the manufacturer
of the child restraint you intend to install in your Audi.
• Improper use of child restraint anchors (including tether
an chor s) can lead to injury in a collision . The anchors are designed
to withstand only those loads imposed by cor rectly fitted child
restraints.
• Never mount two child restraint systems on one LATCH lower
an chor point .
• Never attach two child restraint systems to one tether strap or
tether anchorage .
• Never attach a tether strap to a tie-down hook
in the luggage
c ompartment.
• Never use child restraint tether anchorages to secure safety
belts or other kinds of occupant restraints .
• Never se cure or atta ch any luggage or other items to the LATCH
lower anchorages or to the tether anchors.
• If a tether or other strap is used to attach a child restraint to
the front passenger seat, make sure that it is not so tight , that it
causes the weight-sensing mat to measure more weight than is
actually on the seat .
• The heavier weight registered can make the Advanced Airbag
System work as though an adult were on the seat and deploy the
Advanced Airbag when it must be suppressed causing serious or
even fatal injury to the child .
"°
Vehicle care Do-it-yourselt service iTechnical data

Child Safety -
-------------------"'---
& WARNING (c on tinued )
• A tight tether or other strap on a rearward-facing child
restraint attached to the front pas senger seat can put too much
pressure on the weight-mat in the seat and register a heavier
weight in the Advanced Airbag System. The heavier weight regis­
tered can make the system work as though an adult were on the
s eat and deploy the Advan ced Airbag when it must be suppressed
caus ing serious or e ven fatal injury to the child.
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not come on and stay on,
immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer .•
Additional Information
Sources of information about child
restraints and their use
T here are a number of sources of addi tional information about child
restra in t selec tion , in stalla tion and use:
N HTSA a dvises t hat the best ch ild safety s eat is the one that fits you r
child and fits in your vehicle, and that yo u will use co rrectly and
consiste ntly.
Try before you buy!
U .S National Highway Traffic Safety Administration
Tel. : 1-88 8-327- 4236 (T TY: 1-800- 424 -9153)
www.n htsa .gov
National SAFE KIDS Campaign
Tel. : (202) 662-0600
www.safe kids .org
Controls and equip­
ment Safety first Vehicle operation Safety BeltSafe U
.S.A
T el. : (800 ) 74 5-SAFE ( Eng lish)
Tel. : (800) 747 -SA NO (Spa nish)
www.carseat.org
Transport Canada Information Centre
T el. : 1 (80 0) 333-037 1 or call 1 (6 13) 99 8-8 616 if you are i n the
Ottawa area
www. tc.gc.c a/ro ads afety
Audi Customer CARE
T el. : (800) 822-2834 •
Vehicle care Do-it-yourself service Technical data

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acting on the vehicle, the brake pressure and the steering angle are
all meas ured.
The direction in which the driver wishes to travel is determined with
the aid of the steering angle and vehicle speed and is continually
compared with the actual behavior of the vehicle. If the two do not
match, for example , when the vehicle starts hydroplaning on a wet
road, ESP will automatically brake the appropriate wheel to correct
the problem.
The vehicle is then stabi lized 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 main ly applied on the wheel that is on the
outs ide of the curve. In the case of a vehicle that is
understeering
(tendency to slide out of the curve), the brakes are applied at the rear
wheel that is on the inside of the curve. An acoustic signal ind icates
when ESP brake application cuts in =>
&.
Th e system operates across the entire speed range in combination
with the ABS system=>
page 256. If the Anti-Lock Brake System
(ABS) malfunctions, the ESP will be out of action as we ll.
Activation
When you turn on the engine, ESP will automatically be activated and
will perform a self-test .
The system can be activated or deactivated by pressing the button
=>
page 252, fig. 234 . The warning light comes on when the system
is switched off=>
page 16.
Normally, the ESP should always be on, however, it may be advanta­
geous to turn off the sys tem in certain special cases when some
degree of whee l spin is desired such as:
• when driving with snow chains
• when driving in deep snow or on a loose surface (to allow the
wheels to dig in to reach firm ground)
• when trying to "roc k" the vehicle free when it has become stuck.
The system should be reactivated once you are no longer in such situ­
ations.
Controls and equip­ ment Safety first Vehicle operation
Both the ABS and
EDS systems are still functioning even if the ESP is
switched off.
& WARNING
The Electroni c Stabilization Program is nevertheless subject to the
laws of physics. It is particularly important to pay attention to
this fact on wet and slippery roads. It is therefore important that
you always adapt your driving to the condition of the road and
traffic conditions. Do not allow the increased safety provided by
the Electronic Stabilization Program system to lull you into
accepting additional safety risks. •
Electronic differential lock (EDL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The electronic differential lock (EDL) helps the car to start moving,
acce lerate and climb a gradient on surfaces providing poor or almost
no grip . Without EDL, this would be difficult, if not impossible .
How the system works
The EDL operates automatically. It monitors the rotational speed of
the drive wheels on an axle with the he lp of the ABS sensors
=>
page 256 . 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 whee l or wheels (all -wheel drive). This is done up to a
speed of about 60 mph (100 km/h) . Noises from the brake system
signal that wheel spin is being contro lled.
Driving 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 with
less grip , gradually increase the pressure on the accelerator peda l
Iii>
Vehicle care Do-it-yourself service Technical data

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On steep s lopes , you shou ld use the brak ing effect of t he e ngine. This
w ay, y ou p revent unne ce ss ary we ar o n t he bra ke sys te m . If you mus t
use your brakes , do not ho ld the brakes down conti nuously . Pump the
bra kes at intervals.
Moisture or road salt
Under cer ta in c on di tions, for ex ample, when drivin g thr ough w at er or
very heavy rain, or e ve n after was hing your veh icle, the braking effect
c an be re duced due to moi st ur e (o r in freezi ng condi tio ns ice) o n the
bra ke pads . A few care ful b rake app lica tions should dry off the bra ke
pads or
remove any ice coatings .
Th e effec tiveness of the bra ke s ca n be re d uced whe n the vehicle is
driven on a salt-covered road and the brakes are not used . He re too,
yo u sh ould clean off a ccumula ted sa lt c oat ing from brake disc s and
pads with a few caref ul app lications of the brake::::;,&.
Corrosion
The re may be a tendency fo r dirt to build up on the bra ke pads and
cor ro si on t o fo rm on the di scs if t he c ar is not driven re gularly or o nly
for short t rips w ith litt le use of the bra kes.
If the bra kes are not used fre quent ly, o r if corrosion ha s fo rme d on
t he d iscs, i t is advisable to clean off t he pads and d is cs by bra king
fi rm ly a few t imes from a mo derately high speed ::::;,& .
Faults in the brake system
If yo u shou ld no tice a sudden in cre ase in b rake ped al t ravel, t hen one
o f t he two brake circ uits may have failed::::;,&.
Low brake fluid level
Malfunctions can occ ur in the brake system if the brake fluid level is
t o o low. The bra ke f lui d level is mon itored e lectroni cally.
Brake lining wear status
Brak e lining we ar may be checked by v isual inspec tio n o f the condi­
tion of the brake pads throug h the openings in the wheel. If neces­
sa ry, t he wheel m ay be re m oved f or this in spection ::::;,
page 335,
"C hanging a w hee l" .
Controls and equip­
ment Safety first Vehicle operation
& WARNING
•
You should perform braking maneuvers for the purpose of
cleaning the brake system only if road condition s permit. Other
road users must not be put at risk -you may cause an accident!
• Before descending a steep grade, reduce speed and shift trans ­
mission into a lower gear or lower driving range. Do not ride the
brakes or hold the pedal down too long or too often. This could
cause the brakes to get hot and diminish braking efficiency.
• Do not "ride the brakes " by resting your foot on the pedal when
you do not intend to brake. This may cause the brakes to overheat,
premature wear and increased stopping di stan ce.
• Under certain climatic and operating conditions such as
passing through water, driving in heavy rain or after washing the
vehicle, the effectiveness of the brakes can be reduced. In winter,
ice can accumulate on the brake pads , linings, discs and drums .
Carefully apply brakes for a test . Brakes will dry and ice coatings
will be cleaned off after a few careful brake applications.
• Driving for an extended period of time on salt-covered roads
without using your brakes can also affect braking efficiency. Clean
off accumulated salt coating from brake discs and pads with a few
careful brake applications.
• If you damage the front spoiler, or if you install a different
spoiler, be sure the air flow to the front brakes is not obstructed.
Otherwise the brake system could overheat reducing the effective­
ness of the entire brake system .
• Failure of one brake circuit will impair the braking capability
resulting in an increased stopping di stance . Avoid driving the
vehicle and have it towed to the nearest Audi dealer or qualified
workshop .•
Vehicle care Do-it-yourself service Technical data

_________________________________________ I_ n_ t_ e_ ll_,igent technology ,__E~-
The brake assistant will not be operative if there is a malfunct io n in
t he ABS.
& WARNING
Plea se remember that the accident ri sk a lwa ys increa se s if you
d riv e too fast , especially in corne rs or on a slippery road , or if you
follow the vehi cle ahead of you too closely . In cre ased ri sk of an
accident cannot be compensated for e ven by the brake ass istant,
so always maintain a safe speed. •
Servotronic® - advanced power
steering system
The power steering systems uses th e power of the
running engine to allow precise steering with little effort.
Th e advanced Servotronic ® power steeri ng system senses the road
speed and electronically ad justs power assistance to provide
c omfortable and safe s teer ing response exa ctly matched to the
vehicle speed.
Powe r steering will not work if the engi ne is of f. As a resu lt, the
steer ing wheel will be hard to turn .
The power stee ring fluid level is checked during the sched uled main­
t enance se rvi ces.
0 Note
If the re is an ele ct roni c mal func tion, servotroni c will still f unction
like a conventional power steer ing system, prov iding a constant
steeri ng support force tha t is no lo nger propo rt iona te to the ve hicle
speed. This is most not iceab le when turn ing the steer ing wheel at low
speeds (for example when parking), -more effort will be required
than usual.
Controls and equip­ ment Safety first Vehicle operation
•
Be aware of the d ifferent than usual steering response and adjust
your stee rin g for ce acco rdi ng ly.
• Have the prob lem checked and set r ight by an A udi dea ler as soon
as possib le.
[ i ] Tips
• Whe n the eng ine is runni ng, neve r hold t he steering w hee l turned
all the way to the right or to t he left for longer than 15 seconds. The
powe r stee ring pump wi ll over heat the hydra ulic fluid if yo u keep
holding the steeri ng w heel tur ned all the way. This is likely to damage
the power steering system .
• If the power stee ring system shou ld fa il entire ly, or if the engine
is not r unning (fo r examp le, while being towed), you w ill still be a ble
to steer the vehicle. However,
considerably more effo rt will be
req uired to do so .
• If the power steering system s hou ld have a lea k, or is not func­
tioning properly, contact your authorized Au di dea ler immediate ly .
• The power steering system requ ires a specially formulated
hydra ulic fl uid. The power stee ring re se rvoir is t he one located mos t
forward o n the left side of the eng ine compa rtment=:>
page 290 . The
correct fluid leve l in the reservoir is important fo r proper f unctioning
of t he power steering. •
Dr"ving with your quattro®
With All Whee l Drive, all four wheels are driven .
General information
With All Wheel Drive, power is d istributed to all four wheels. This
happens au tom atically depending on you r d rivi ng style a nd the roa d
conditions at the time. See also=>
page 253, "Electronic different ial
lock (ED L)".
Vehicle care Do-it-yourself service Technical data