2011 AUDI S8 warning light

176 Child Safety
than 20 lbs (9 kg) up to 40 lbs. (18 kg) must
a lways be properly restrai ned in a chi ld safety
seat certified for the ir s ize and wei ght
¢
fig. 159 and ¢ fig. 160.
The airba g on the passen ger side makes the
front seat a potentially dangerous place for a
chi ld to r ide. The front seat is not the safest
place for a child in a forward-facing child safe­
ty seat. It is a very dan gerous plac e for an in­
fant or a larger child in a rearward-fac ing seat.
A WARNING
Not using a ch ild safety seat, using the
wrong ch ild safety seat or improperly in­
stall ing a child restraint increases the risk
of serious personal injury and death in a
co llision or other eme rgency s ituation.
- Children on the front seat of any car,
even w ith Advanced A irbags, can be seri­
o usly inju red or even killed when an a ir­
bag inflates. A child in a rearward-facing
child safety seat installed on the front
passenger seat w ill be seriously injured
and can be k illed if the front a irbag in­
flates -even with an Advanced Airbag
System.
- The inflating a irbag will hit the child
safety seat or infant car rier with great
force and w ill smash the ch ild safety seat
and child against the backrest, cente r
arm rest, door o r roof.
- Always install rear-facing child safety
seats on the rear sea t.
- If you must install a rearward facing
child safety seat on the front passenger
sea t because of excep tional circ ums tan­
c es and the
PASSENGER AIR BAG OFF
light does not come on and stay on, im­
mediately install the rea r-facin g child
safety seat in a rear seating position and
have the airbag system inspected by your
Audi dealer.
- Always read and heed all WARNI NGS
whenever using a child restrained in ave­
hicle is being used¢
page 137, Safety
belts,¢ page 145, Airbag system
and
¢ page 169, Important things to know.
A WARNING
If exceptional circumstances require the
use of a fo rward-facing child restraint on
the front passenge r's seat, the child's safe­
ty and well-being require t hat the follow­
i ng spe cial preca utions be ta ken:
- Make sure t he forward-facing seat has
been designed and cert ified by its man u­
facturer fo r use on a front seat with a
p assenger front and side airbag.
- Always follow the manufacturer' s in­
s truc tions prov ided with t he ch ild safety
seat o r infant ca rr ier.
- Always move the front passenger seat in­
to the rearmos t position of the passen­
ge r seat's fore and aft adjustment range,
and as far away from the airbag as possi­
b le before installing the ch ild restraint.
- Always ma ke sure that no thing prevents
the front passenger 's seat from being
moved to the rea rmost pos ition in its
fore and aft ad justment range.
- Always make sure the bac krest is in an
upright pos ition.
- Make sure that the
PASSENGER AIR BAG
OFF
li ght comes on and stays on all the
time whenever the ignit ion is switched
on.
- I f the light does not stay on, perform the
checks¢
page 156, Monitoring the Ad­
vanced Airbag System.
- Ta ke the chi ld restraint off the front pas­
senger seat and install it properly at one
of the rear seat positions if the
PASSEN ­
GER AIR BAG OFF
l ight does not stay on
wheneve r the ignit ion is switched on.
-

178 Child Safety
the child's body and the front of the passen­
ger compartment, the airbag can inflate com­p lete ly and provide supp lemental protection
in certain fronta l collisions .
A WARNING
Not using a booster seat, us ing the boos­
ter seat improperly, incorrect ly install ing a
booster seat or using the vehicle safety
belt improperly increases the risk of seri­
ous personal injury and death in a col lision
or other eme rgency s ituation. To help re­
duce the risk of ser ious persona l injury
and/or death:
- Always make su re to position the should­
er portion of the three -point belt over
the midd le of child's sho ulder.
- Never le t the shoulder port ion of the belt
rest against or across the neck, face,
chin, or throat of the child.
- Always make su re the lap belt portion of
the three-po int be lt is worn sn ug and
passes as low as possib le across the
child's pelvis. Never let the belt pass over
the soft abdomen.
- Failure to properly route safety belts
over a ch ild's body will cause severe inju­
ries in an acc ident or other emergency
situation
c;,page 137.
-Children on the front seat of any car,
even w ith Advanced A irbags, can be seri­
ous ly injured or even killed when an a ir­
bag inflates.
- Never let a child stand or knee l on any
seat, for example the front seat.
- Never let a child ride in the cargo area of
your vehicle.
- Always remember that a ch ild lean ing
forward, sitt ing s ideways or out of posi­
t ion i n any way during an acc ident can be
struck by a deploying airbag . This will re­
sult in serious personal injury o r death.
- If you must install a booster seat on the
front passenger seat because of excep­
tional circumstances the
PASSENGER
AIR BAG OFF
light must come on and
stay on, whenever the ignition is sw itch ­
ed on .
-
-If the PASSENGER AIR BAG OF F light
does not come on and stay on, perform
the checks described
c;, page 156, Moni­
toring the Advanced Airbag System.
- Take the child restraint off the front pas­
senger seat and install it properly at one
of the rear seat positions if the
PA SSEN ­
GER AIR BAG OFF
light does not stay on
whenever the ignit ion is switched on.
- Always read and heed all WARNINGS
whenever us ing a child restrained in ave­
hicle is being used
¢ page 137, Safety
belts,
c;, page 145, Airbag system and
c;, page 169, Important things to know.
Installing a child safety
seat
· Securing a child safety seat using a
safety belt
Safety belts for the rear seats and the front
passenger can be locked with the convertible locking retractor to properly secure child
safety seats.
The safety belts emergency locking retractors
for the rear seats safety belts and for the
front passenger's seat safety be lt have a con­
vertib le locking retractor for child restraints .
The safety belt must be locked so that be lt
webbing cannot unreel. The retractor can be
activated to lock the safety belt and prevent
the safety belt webbing from loosening up
during normal dr iving . A child safety seat can
o n ly be properly instal led when the safety belt
is locked so that the chi ld and child safety
seat w ill stay in place .
Always remember : Even though your vehicle is
equipped with an Advanced Airbag system, all
child ren, especially those 12 years and young­
er, shou ld always r ide in the back seat prope r­
ly restrained for the ir age and size.
A WARNING
Improperly installed chi ld safety seats in ­
crease the risk of serious personal injury
and death in a co llision. -

-Always make sure that the safety belt re­
tractor is locked when installing a child
safety seat. An unlocked safety belt re­
tractor 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 collision.
- Always make sure that the rear seat
backrest to which the center rear safety
belt is attached is securely latched when­
ever the rear center safety belt is being
used to secure a child restraint.
- If the backrest is not securely latched,
the child and the child restraint will be
thrown forward together with the back­
rest and will strike parts of the vehicle
interior. The child can be seriously in­
jured or killed.
- Never install rear-facing child safety
seats or infant carriers on the front pas­
senger seat. A child will be seriously in­
jured and can be killed when the passen­ ger airbag inflates .
- The inflating airbag will hit the child
safety seat or infant carrier with great
force and will smash the child safety seat
and child against the backrest, center
armrest, door or roof.
- Always install rear-facing child safety
seats or infant carriers on the rear seat.
- Forward-facing child safety seats or in­
fant carriers installed on the front pas­
senger's seat may interfere with the de­
ployment of the airbag and cause serious
injury to the child.
- It is safer to install a forward-facing
child safety seat on the rear seat.
- Always read and heed all WARNINGS
whenever using a child restrained in ave­
hicle is being used
¢page 169. Special
precautions apply when installing a child
safety seat on the front passenger seat
¢ page 147, Child restraints on the front
seat -some important things to know.
Child Safety 1 79
A WARNING
-
Always take special precautions if you
must install a forward or rearward -facing
child restraint on the front passenger's
seat in exceptional situations:
- Whenever a forward or rearward -facing
child restraint is installed on the front
passenger seat, the
PASSENGER AIR
BAG OFF
light must come on and stay on
whenever the ignition is switched on.
- If the
PASSENGER AIR BAG OFF light
does not come on and stay on, perform
the checks described
¢page 156, Moni­
toring the Advanced Airbag System.
- Take the child restraint off the front pas­
senger seat and install it properly at one
of the rear seat positions if the
PASSEN­
GER AIR BAG OFF
light does not stay on
whenever the ignition is switched on.
- Improper installation of child restraints
can reduce their effectiveness or even
prevent them from providing any protec­
tion.
- An improperly installed child restraint
can interfere with the airbag as it de­
ploys and seriously injure or even kill the
child .
- Always carefully follow the manufactur­
er's instructions provided with the child
safety seat or carrier .
- Never place additional items on the seat
that can increase the total weight regis­
tered by the weight-sensing mat and can
cause injury in a crash.
A WARNING
Forward-facing child restraints:
- Always make sure the forward-facing
seat has been designed and certified by
its manufacturer for use on a front seat
with a passenger front and side airbag.
- Never put the forward-facing child re­
straint up, against or very near the in­
strument panel.
- Always move the passenger seat into its
rearmost position in the seat's fore and
aft adjustment range, as far away from •
•

180 Child Safety
the airbag as possible before installing
the forward-facing child restraint. The backrest must be adjusted to an upr ight
posit ion.
- Make sure that the
PAS SENGER AIR BAG
OFF
light comes on and stays on all the
t ime whenever the ignition is switched
on.
A WARNING , _
Rearward-fac ing ch ild restra ints:
- A ch ild in a rearward-facing child safety
seat installed on the front passenge r
seat will be ser iously injured and can be
killed if the front airbag inflates -even
with an Advanced Airbag System.
- T he inflating a irbag will hit the child
safety seat or infant carrier with g reat
force and w ill smash the ch ild safety seat
and child against the backrest, center
armrest, door or roof .
- Always be especially caref ul if you must
install a rearward facing child safety seat
on the front passenge r seat in exception ·
al circumstances .
- A tight tether 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 reg is­
ter a heavier weight in the Advanced A ir­
bag System. The heav ier we ight regis­
tered can make the system work as
though an adult were on the seat and de­ ploy the Advanced Airbag when it must
be s uppressed causing ser ious or even
fatal injury to the child.
- Make sure that the
PASSENGER AIR BA G
OFF
light comes on and stays on all the
time whenever the ignition is switched on.
- If the
PA SSENGER AIR BAG OFF light
does not come on and stay on, immedi­
ately install the rea r-facing chi ld safety
seat in a rear seating position and have
the a irbag system inspected by your Audi
dealer.
Act ivating the convertible locking
retractor
Use the convertible locking retractor to se­
cure a child restraint.
Always heed the ch ild safety seat manufactur­
er's instructions when installing a child re­
st ra int in your vehicle. To activate the conve r­
t ible lock ing ret ractor:
.,. Place the ch ild restraint on a seat, prefera­
bly on the rear seat .
.,. Slowly pu ll the belt
all the wa y out .
.,. Route it around or through the child re­
straint belt path
¢ _& .
.,. Push the chi ld safety seat down with yo ur
full weight to get the safety be lt really tight.
.. Insert the belt tongue into the buck le for
that seating position.
.,. Guide the safety belt back into the retractor
until t he belt lies flat and snug on the child
safety seat.
.,. You should hear a "clicking" noise as the
be lt winds back into the inertia ree l. Test the
convert ible lock ing retractor by pulling on
the belt . You shou ld no longer be able to
pull the be lt out of the retractor. The con­
vertible locking retractor is now activated .
.. Make sure that the red release button is fac­
ing 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 mo re
than one inch (2.5 cm).
A WARNING
-
Using the wrong child restraint or an im­
p roperly installed chi ld restraint can cause
serious personal injury or death in a crash.
- Always ma ke sure that the safety belt re-
tractor is locked when insta lling a child
safety seat . An un locked safety belt re­
tractor cannot hold the child safety seat in place dur ing norma l dr iving or in a
crash.

186 Child Safet y
These new performance requirements make a
tether necessary on most new child safety
seats.
.&_ WARNING
Improper insta llation of child restraints
wi ll increase the risk of injury and death in
a crash.
- Always follow the instructions prov ided
by the manufacturer of the ch ild re­
straint you intend to install in your Audi .
- Improper use of child restra int anchors
(including tether anchors) can lead to in­
jury in a collision. The anchors are de­
signed to withstand on ly those loads im­
posed by cor rect ly fitted ch ild restraints.
- Never mou nt two ch ild restraint systems
on one LA T CH lower ancho r po int.
- Never attach two child restraint systems
to one tethe r strap or tether anchorage.
- Never attach a tether strap to a tie-down hook in the luggage compartment.
- Never use c hild restraint tether ancho­
rages to secure safety belts o r other
k inds of occ upant restra ints.
- Never secure or attach any luggage or other items to the LATC H lowe r ancho­
rages or to the tethe r anchors.
- If a tether or othe r strap is used to at­
tac h a child rest raint to the front passen­
ger seat, make sure that it is not so
t ight, that it causes the we ight-sensi ng
mat to measure more weight than is ac­
t u a lly on t he seat.
- T he heav ier we ight reg iste red can make
t he Advanced Airbag Sys tem work as
though an adult were on the seat and de­
ploy the Advanced Airbag when it must
be s uppressed causing serious or even
fatal injury to the child.
- If you must install a rearward facing
child safety seat on the front passenger
seat beca use of exceptional circ umstan­
ces and the
PASSENGER AIR BAG OFF
light does no t come on and stay on, im­
med iately install the rea r-facing child
safety seat in a rear seating position a nd
-
have the airbag system inspected by your
Aud i dea ler.
Installing the upper tether strap on the
anchorage
F ig . 1 69 Tether strap: proper ro uting and mount ing
Installing the tether strap
"' Release or deploy the tether st rap on the
child restraint according to the child re­
straint manufacturer's instructions .
"' Guide the upper tether strap
under the rear
head restra int¢
fig. 169 (ra ise the head re­
straint if necessary) .
"' Center seating position*: Guide the upper
tether strap over the rear head restra int.
"' Tilt the recess flap up to expose the an chor
b racket.
"' Att ach the tether strap ancho rage hook in to
the opening of the tethe r ancho rage.
"' Pull on the tether strap hook so that the
spring catch o f the hook engages.
"' Tighten the tether strap firmly fo llow ing the
child restraint manufacturer's instructions.
Releasing the tether strap
"'Loosen the tension fo llow ing the child re­
straint manufacture r's in str uctions.
"' Depress the spring catch on the hook and re­
lease it from the anchorage.
(D Note
If yo u leave the c hild restra int w it h the
tether strap firm ly installed for seve ral
days, this could leave a mark on the up­
ho lstery on the seat cushion and backrest

188 Audi pre sense
Audi pre sense
Preventative passenger
protection
A pp lies to veh icles: with Audi pre se nse
Aud i pre sense can ini tia te steps to help pro­
t ect veh icle occupants in certain situa tions.
The funct ions described depend on equ ipment
installed in your vehicle:
Audi pre sense basic
The following functions can be triggered in
certain driv ing situations :
- Tightening of the safety belts (for examp le,
during heavy braking) : the front safety belts
have reversible belt pretensioners. If a colli­
sion does not occur, the safety belts loosen
s lightly and are ready to be tightened again .
- Closing the w indows and the sunroof* : the
windows and the sunroof* close leaving a
small open gap .
Audi pre sense basic functions can be trig­
gered at speeds above 20 mph (30 km/h).
Vehicles with Aud i drive select*: the dep loy­
ment time is adapted in dynamic mode.
Audi pre sense front (vehicles with
adaptive cruise control*)
Audi pre sense front includes the functions in
Audi pre sense basic. In addition, within the
limits of the system, the likelihood of a colli ­
sion with the vehicle immediately ahead is al­
so ca lculated . If the system senses an immi­
nent collision the follow ing functions can be
tr iggered :
-Audi braking guard
c::> page 92
- Tightening the safety be lts
- Closing the windows and the sunroof* (leav -
ing a small open gap)
Audi pre sense rear (vehicles with Audi
side assist*)
Audi p re sense rear includes the functions in
Audi pre sense basic. In addition, the likeli ­
hood of a rear -end collis ion with the vehicle
coming from behind is also calc ulated.
If the risk
of a co llision is detected, the following
functions can be triggered :
- Tig htening the safety belts
- Closing the windows and the sunroof* (leav-
ing a small open gap)
- Adjusting the seats : the settings for the
power head restrains, the upper sections of
t he backrests and the pneumatic side bol­
s ters* are optim ized for the front seats and
the outboard rea r seats*. If a collision does
not occur, the previo us seat settings are re­
stored.
Audi pre sense plus
Audi pre sense plus includes the funct ions in
A udi pre sense front and Audi pre sense rea r.
Error message
Audi pre sense: not available
Preventative passenger protection is not avail­
able. See your authorized Audi dealer immedi­
ately to have the malfunction corrected .
A WARNING
-Audi pre sense cannot overcome the laws
of physics.
It cannot prevent a collision. Do
not let the increased safety provided
tempt you to take risks. This will increase
the r isk o f a coll is ion and serio us personal
injuries.
- The sensors cannot always detect all ob­
jects . This increases the risk of a colli ­
sion.
- Aud i p re sense does not detect peop le or
animals or objects that are crossing the
vehicle's path
c::> page 86.
-The radar sensor's vis ion can be reduced
by heavy rain, ice, snow, heavy road spray
and reflections from guard rails, tunnel
entrances, etc. These and similar condi­
tions can prevent vehicles from be ing ac­
curately detected and in some cases they
may not be detected at all.
Ill>

192 Intelligent technology
-ABS and ASR on ly work correctly when
a ll four wh eels are eq uipped w ith ident i­
ca l tires. Different tire s iz es can lead to a
reduct ion in engine power.
- You may hear no ises when the systems
described are working.
- If the indicator light
DJ or m (USA
models) ;tl] (Canada models) appea rs,
there may be a malfunct ion
c::;, page 19,
c::;, page
18 .
Switching on and off
ESP turns on au toma tically when you s tar t
the engine .
Fig . 170 Cen ter con sole w it h ESP OF F button
Switching ASR off (sport mode)
In ce rtain situat io ns, yo u can switch ASR and
E SP into sport mode by pressing the button
l!I
c::;, fig. 170. The indicato r light fl comes on
and the mess age
C aution! Limit ed driving
s tability
appears . ASR deact ivates comp lete ly
and the assistance prov ided by the ESP sys ­
tem is limited. Switch to sport mod e onl y
when your d riv ing sk ills, traffic and weather
conditions permit.
In some situations, it may be useful to switc h
ASR off to let the wh eels slip. Example:
- Rocking the vehicle bac k and forth when it is
stuck
- Driv ing in deep snow or on loose ground
- Driving with snow cha ins
Sw itching ASR on
Press the button I!] aga in. The message ESP /
ASR: on appears .
A WARNING
-Drive whee ls can sp in and you can lose
control of the vehicle more eas ily when
ASR and ESP are in sport mode, especial­
ly whe n the road is slippery .
- Sw itch to sport mode only when your
d riving skills, traff ic and weather condi­
tions perm it.
@ Tips
You cannot sw itch sport mode on whe n
adaptive c ruise co ntrol* is worki ng.
Braking
General information
Wha t affe cts braking effi cien cy?
-
Operating conditions and driving habits
The brakes o n today's automobiles are still
s u bjec t to wear, depending largely on operat­
ing cond it ions and driving hab its
c::;, &. . On ve­
hicles that a re e it h er dr iven most ly in stop­
and-go city t ra ffi c or are dr iven hard, the
brake pads should be checked by yo ur au thor­
ized Audi dea ler mo re often than specified in
t h e
Warranty & Maintenance booklet. Failure
to have your brake pads inspected can result in reduced brake performance.
On steep slopes , you sho uld use the braking
effect of the engine. This way, you prevent un­
necessary wear on the brake system . If you
must use your b rakes, do not hold t he brakes
down continuous ly. Pump the brakes at in ter­
vals .
Moisture or road salt
U nd er certain conditions, for example, when
driving through water or very heavy rain, or
even after washing your veh icle, the braking
effect can be reduced due to moisture (or in
freez ing cond itions ice) on the brake pads . A
few caref ul brake applicat ions should dry off
t h e b rake pads or remove a ny ice coatings .
The effectiveness of the brakes ca n be reduced
when the vehicle is d riven on a sa lt-covered
ll>

Replacing wh eels/ tire s
Vehicles w ith All Wheel Dr ive must always
have tir es of the same size. Also avoid tires
with different tread depths. For details see
pag e¢
page 249 , N ew tires and replacing
tires and wheels .
Off-Road driving?
Your Aud i does not have enough ground clear­
ance to be used as an off -road vehicle. It is
therefor e best to avoid rough tracks and un ­
even terrain as much as possible . Also refer to
¢ page 198.
A WARNING
Always adjust your driving to road and traf­
fic condit ions . Do not let the extra safety
afforded by All Wheel Drive tempt you into
taking extra risks.
- Although the All Wheel Drive is very ef­
fective, always remember that braking
capacity is limited by t ire traction . Yo u
should the refore not dr ive at excessive
speeds on icy or s lippery road surfaces.
- On wet road su rfaces, be ca reful not to
dr ive too fast because the front wheels
cou ld beg in to s lide on top of the wa ter
(aquaplaning). If this sho uld occ ur, you
will have no warning from a sudden in­
crease in engine speed as with a front­
wheel drive vehicle. A lways drive at
speeds wh ich are suited to the road con­
ditions -risk of crash .
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimi zes the
availability of electrical energy for starting the engine.
If a vehicle wit h a conventional energy system
i s not driven for a long period of time , the bat­
tery is discharged by idling cu rrent consumers
(e .g. immobilizer) . In certain circumstances it
can result in there being ins ufficient energy
avai lab le to start the engine.
Int ellig ent technolog y 195
Intelligent energy management in your vehi ­
cle hand les the distribution of e lectrica l ener­
gy. Start ing ability is marked ly improved and
the life of the b attery is extended.
Bas ica lly, energy management consis ts of
batte ry diagnosi s, idling cur rent m anage­
ment
and dynamic energ y management.
Battery diagnosis
Battery diagnosis continuously de termines
the state of the battery . Sensors de termine
batte ry voltage, battery current and battery
temperature . This determines the current
state of charge and the power of the batte ry .
Idling current management
Id lin g cur ren t management reduces energy
consumption while the vehicle is standing.
With the ig nition switched off, it controls the
energy supply to the various electrical compo­ nents. Data from battery diagnos is is cons id­
ered.
Depend ing on the battery's state of cha rge ,
individua l cons umers are gradually turned off
to prevent excessive discharge of the batte ry
and th us maintain starting capability .
Dynamic energy manag ement
While the ve hicle is being driven, dynamic en ­
ergy management distrib utes the energy ge n­
erated according to the needs of the individ u­
al components . It regulates consumption, so
that more electrical energy is not being used
than is being generated and ensures an opti­
mal state of charge for the battery .
@ Tips
-But even energy management cannot
negate the limits of physics. Consider
t hat the powe r and l ife of a battery are
limited.
- If start ing ability is threatened, the indi­
cator light
(•i appears ¢ page 16, c:::3
Battery.
•
•