ESP AUDI S3 2010 Workshop Manual

_____________________________________________ C_ h _ il_d _S_ a _ fe_t---= y'----"'
Child Safety
Important things to know
Introduction
The rear seat is generally the safes t place in a collision.
The p hysica l pr inciples of what happens when you r veh ic le is in a
crash apply also to children=>
page 137, "What happens to occu ­
p a nts not wearing safety bel ts?" . Bu t un like adults and teenagers,
their musc les and bones are not fu lly developed. In many respects
children a re a t greater ris k of serious inj ury in cras hes than a dults .
B ecause chi ldren 's bodies a re no t fully deve loped, they require
restraint systems especial ly designed for their size, weight, and
body structu re. Ma ny countries and al l sta tes of the U nited States
and provinces of Canada have laws requiring the use of approved
chil d restraint sys te m s for infa nts and smal l children .
I n a frontal crash at a speed of 20 -35 mph (30 -56 km/h) the forces
ac ting on a 13-pou nd (6 kg) infant wi ll be mo re than 20 times the
weight of the child. This means the weight of the child would
suddenly be more than 260 pounds ( 120 kg). Under these condi ­
t ions, only an appropriate child restraint proper ly used can reduce
the risk of serious in jury. Child restraints, like adult safety belts,
must be use d properly t o be eff ective. Use d impro perly, they can
increase the risk of serious injury in an accident .
Co nsul t the c hild safety seat man ufacture r's ins truc tions to be su re
the seat is right for your child's size=>
page 170, "Important safety
instructions for using child safety seats" . Please be sure to read and
heed a ll of the important information and WARNI NGS about child
safety, Advanced Airbags, and the insta llation of child restraints in
this chapter.
T here is a lot you need to know about the Advanced Airbags in your
veh ic le and how they work whe n inf an ts and ch ild ren in c hild
restraints are on the front passenger seat. Because of the large
Controls and equip­ ment Safety first Vehicle operation
amoun
t of important informat ion, we cannot repeat it all here. We
urge you to read the detai led information in this owner's manua l
about a irbags and the Advanced Airbag Sys tem in your ve hic le and
the very important information about transporting children on the
fr ont passenger sea t. Please b e sure to hee d th e WAR NINGS -th ey
are extreme ly important for your safety and the safety of your
p asse ngers, es pecia lly inf ant s and s mall ch ildren .
& WARNING
• Accident statistics have shown that children are generally safer
in the rear seat area than in the front seating position . Always
restrain any child age 12 and under in the rear.
• All vehicle o ccupants and especially children must be
restrained properly whenever riding in a vehicle . An unrestrained
or improperly restrained child could be injured by striking the inte­
rior or by being ejected from the vehicle during a sudden
maneuver o r impact . An unrestrained or improperly restrained
c hild is also at greater risk of injury or death through conta ct with
an inflating a irbag .
• A suitable child restraint properly installed and used at one of
the rear seating positions provides the highest degree of protec­
tion for infants and small children in most accident situations .
& WARNING
Children on the front seat of any car even with Advanced Airb ags
c an be seriously injured or even killed when an airbag inflates . A
child in a rearward -fa cing child safety seat installed on the front
pas senger seat will be seriously injured and can be killed if the
front airbag inflates.
• The inflating airbag will hit the ch ild safety seat or infant
carrier with great force and will smash the child safety seat and
child against the backrest , center armrest , or door. •
Vehicle care Do-it-yourself service Technical data

-Child Safety -------=---------------------------------------
& WAR NIN G (co ntinued )
• Alw ays in sta ll re ar-facin g child safety s eats on the r ear seat .
• If you m us t in sta ll a rear ward f acing child saf ety s eat on th e
fr ont pa ssenger seat in exceptional circum stan ces and the
PA SSEN GER AIR BAG OFF light do es not come on and sta y on ,
immediately in sta ll the re ar-facing child safety s eat in a rear
s eating po sit ion and ha ve th e airb ag s ystem insp ected immedi ­
atel y by your autho riz ed Audi dealer .
& WARNING
If, in exceptional circum stance s, you mu st in sta ll a forward -f a cing
c hild re str ain t on th e fr ont p assenger's s eat:
• Always mak e sure the forward -fac ing seat ha s been de signed
a nd ce rt ified by it s m anufa cturer for u se on a fr ont se at w ith a
pa ssenger front and side airbag.
• Always follow the m anufacturer's instru ctions provided w ith
the child safety seat or carr ier.
• Alwa ys mo ve the pa ssenger seat into it s rea rmost positi on in
the seat' s fore and aft adju stment range , as far aw ay from the
ai rbag as possib le bef ore installing the ch ild r estr aint . The ba ck­
re st mu st b e adjusted to an upright po sition.
• Alway s m ake sure that the PASSENGER AIR BAG OFF l ight
c om es on and sta y s on all the time whenever the ignition is
s w it c hed on . •
Advanced front airbag system and children
Your vehicle is equipped with an "Advanced Airbag System" in
complia nce with United States Federa l Motor Vehicle Safety Stan ­
dard (FMVSS) 208 as applicable at the time your vehicle was manu ­
factu red. T
he Advanced Airbag system in your vehicle has been certified to
meet the " low -risk" requiremen ts for 3 -and 6 -year o ld children on
the passenger side and smal l adults on the driver side . The low risk
deployment criteria are intended to reduce the risk of injury through
interaction with the airbag that can occur, for example, by being too
close to the steering wheel and instrument panel when the airbag
inflates. In addition, the system has been certified to comply with
the "suppression" requirements of the Safety Standard, to turn off
the front airbag for infants up to 12 months who are restrained on
the front passenger seat in child restraints that are listed in the
S tandard.
Even though your vehicle is equipped with an Advanced Airbag
system, all ch ildren, especially those 12 years and younger, should
always ride in the back seat properly restrained for their age and
size . The airbag on the passenger side makes the front seat a poten­
tially dangerous p lace for a child to ride. The front seat is not the
safest p lace for a child in a forward -facing child safety seat. It can be
a very dangerous p lace for an infant or a larger ch ild in a rearward­
facing seat. •
Advanced Airbags and the weight-sensing
mat in the front seat
The Advanced Airbag System in your vehicle detects the presence
of an infant or child in a chi ld restraint on the front passenger seat
using the weight -sensing mat in the seat cushion and the sensor
below the safety belt latch on the front passenger seat that
measures the tension on the safety belt.
The weight -sensing mat measures total weight of the chi ld and the
child safety seat and a child blanket on the front passenger seat . The
weight on the front passenger seat is related to the design of the
child restraint and its "footprint", the size and shape of the bottom
of the child restraint as it sits on the seat . The weight of a child
restraint and its "footprint" vary for different kinds of child ..,.

___ C_ h_ il_ d _S_ a_fe _ ty ______________________________________________ _
C. Forward-facing convertible child restraint systems,
manufactured on or after September 1, 2004:
• Britax Roundabout 161
• Britax Expressway
• Century Encore 4612
• Century STE 1000 4416
• Cosco Olympian 02803
• Cosco Touriva 02519
• Evenflo Horizon V 425
• Evenflo Medallion 254
• Safety First Comfort Ride 22-400
& WARNING
To reduce the risk of serious injury, make sure that the PASSENGER
AIR BAG OFF light comes on and stays on whenever a child
restraint is installed on the front passenger seat and the ignition
is switched on.
• Take the child restraint off the front passenger seat and install
it properly at one of the rear seat positions if the PASSENGER AIR
BAG OFF light does not stay on.
• Have the airbag system inspected by your authorized Audi
dealer immediately.
[ i] Tips
The child seats listed in categories A to C have been tested by Audi
only for the Advanced Airbag function. •
Important safety instructions for using child
safety seats
Correct use of child safety seats substantially reduces the
risk of injury in an accident!
As the driver, you are responsible for the safety of every ­
body in the vehicle, especially children:
- Always use the right child safety seat for each child and
always use it properly ::::>
page 172.
-Always carefully follow the child safety seat manufac­
turer's instructions on how to route the safety belt prop­
erly through the child safety seat.
- When using the vehicle safety belt to install a child safety
seat, you must first activate the convertible locking
retractor on the safety belt to prevent the child safety
seat from moving ::::>
page 177.
-Push the child safety seat down with your full weight to
get the safety belt really tight so that the seat cannot
move forward or sideways more than one inch (2.5 cm).
- If a strap or tether is being used to tie the child safety
seat 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.
Always remember: Even though your vehicle is equipped with an
Advanced Airbag system, all children, especially those 12 years and
younger, should always ride in the back seat properly restrained for
their age and size. _,,

Child Safety -
--------------------''---
& WARNING
Not using a child safety seat, using the wrong child safety seat or
improperly installing a child restraint increases the risk of serious
personal injury and death .
• All vehicle occupants and especially children must always be
restrained properly whenever riding in a vehicle .
- An unrestrained or improperly restrained child can be injured or killed by being thrown against the inside of the vehicle or by
being ejected from it during a sudden maneuver or impact.
- An unrestrained or improperly restrained child is at much
greater risk of injury or death by being struck by an inflating
airbag.
• Commercially available child safety seats are required to
comply with U .S . Federal Motor Vehicle Safety Standard (FMVSSl
213 (in Canada CMVSS 213).
-When buying a child restraint, select one that fits your child
and the vehicle.
- Only use child restraint systems that fully contact the flat
portion of the seat cushion. The child restraint must not tip or
lean to either side . Audi does not recommend using child safety
seats that rest on legs or tube-like frames. They do not provide
adequate contact with the seat .
- Always heed all legal requirements pertaining to the installa ­
tion and use of child safety seats and carefully follow the
instructions provided by the manufacturer of the seat you are
using .
• Never allow children under 57 inches {1.5 meters) to wear a
normal safety belt. They must always be restrained by a proper
child restraint system. Otherwise, they could sustain injuries to
the abdomen and neck areas during sudden braking maneuvers or
accidents.
• Never let more than one child occupy a child safety seat .
Controls and equip­ ment Safety first
Vehicle operation
& WARNING (continued)
• Never let babies or older children ride in a vehicle while sitting
on the lap of another passenger .
- Holding a child in your arms is never a substitute for a child
restraint system .
- The strongest person could not hold the child with the forces
that exist in an accident. The child will strike the interior of the
vehicle and can also be struck by the passenger.
- The child and the passenger can also injure each another in
an accident.
• Never install rear-facing child safety seats or infant carriers on
the front passenger seat. A child will be seriously injured and can be killed when the passenger airbag inflates - even with an
Advanced Airbag System.
• 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 installed on the front
passenger's seat can interfere with the airbag when it inflates and
cause serious injury to the child. Always install forward -facing
child safety seats on the rear seat .
• If exceptional circumstances require the use of a forward­
facing child restraint on the front passenger's seat , the child's
safety and well-being require that the following special precau ­
tions be taken :
- 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.
- Always carefully follow the manufacturer's instructions
provided with the child safety seat or carrier.
Vehicle care Do-it-yourself service Technical data

___ C_h_ i_ ld _ S_ a_ f_ e_ t_y ____________________________________________ _
-Always make sure that the chi ld can pr operly wear t he
lap por tion of the be lt low acr oss the thighs or pelvis and
never over the stomach or abdomen.
Children up to at least 8 years old (over 40 lbs or 18 kg) are best
protected in child safety seats designed for their age and weight.
Exper ts say that the ske le tal s tructure, particu lar ly the pe lvis, of
these children is not fully deve loped, and they must not use the
vehic le safety belts without a suitab le chi ld rest raint.
Children who are at least 4 ft. 9 in. (57 inches/1.45 meters) tall can
generally use the vehic le 's three point lap and shou lder belts . Never
use the lap belt portion of the vehic le's safety belt a lone to restrain
any chi ld, regardless of how big the child is. Always remember that
children do not have the pronounce d pelvic struc ture required for
the proper function of lap be lt portion of the vehicle's three point
lap and shou lder belts. The child' s safety abs olutely requires that a
lap belt portion of the safety belt be fastened snugly and as low as
possible aro und the pelv is. Never let the lap be lt portion of the
safety be lt pass over the child 's stomach or abdomen .
It is usua lly best to put thes e chi ldren in appropriate booster seats.
Be sure the booster seat me ets all app licable safety standards.
Booster seats raise the seating pos ition of the child and reposition
both the lap and s hou lder par ts of t he safety belt so that they pass
across the child's body in the right places. The routing of the belt
over the child's body is very important for the child 's protection,
whether or not a booster seat is used. Children age 12 and under must a lways ride in the rear seat.
In a crash, air bags must inflate wi th in a b link of an eye and with
considerab le force . In order to do its job, the airbag needs room to
inf la te so tha t it will be there to pr otec t the occ upant as the occu ­
pant moves forward into the airbag .
A vehicle occupant who is out of position and too close to the airbag ge ts in t he way of an inflating a irbag. When an occupant is too
close, he or she will be struck vio lent ly and will receive serious or
poss ibly even fatal inju ry. I
n order for the airbag to offer protection, it is important that all
v eh ic le occupan ts, espec ially any c hildren, who mus t be in the fron t
seat because of exceptiona l circumstances, be properly restrained
and as far away fro m the airbag as possible . By keepi ng room
between the child's body and the front of the passenger compart ­
ment, the ai rbag can inflate comp lete ly and provide s upplemental
p rotectio n in ce rtai n fr ontal collis ions .
& WARNING
Not u sing a booster seat , using the booster seat improperly , incor ­
rectly installing a boo ster seat or using the vehicle safety belt
improperly in creases the risk of serious personal injury and death
in a collision or other emergency situation . To help reduce the risk
of serious personal injury and /or death :
• Alway s make sure to position the shoulder portion of the three­
point belt over the middle of child's shoulder .
• Never let the shoulder portion of the belt rest against or acro ss
the ne ck, fa ce , c hin , or throat of the child .
• Alway s make sure the lap belt portion of the three -point belt is
worn snug and pa sses as low a s po ssible across the child' s pel vis .
Never let the belt pass over the soft abdomen.
• Failure to properly route s afety belts over a ch ild's body will
cau se severe injurie s in an accident or other emergency situation
~ page 135 .
• Children on the front seat of any car , even with Advanced
Airb ags , c an be seriou sly injured or even killed when an airbag
inflates.
• Never let a child stand or knee l on any seat , fo r ex ample the
front seat .
• Never let a child ride in the cargo area of your vehicle .
• Always remembe r that a child leaning forward , sitting side ­
ways or out of po sition in any way during an accident can be
s truc k by a deploy ing airbag . Thi s will re sult in ser iou s per sonal
i njury or death .
~

_______________________________________________ C_h _ i_ld _ S_ a_ f_ e_ t..,:c y __ _
-Guide the upper tether strap under the rear head
restraint and into the rear cargo area==> fig. 157 (raise the
head restraint if necessary).
- Slide the tether strap hook over the anchor bracket.
- Pull on the tether strap hook so that the spring catch of
the hook engages .
- Tighten the tether strap firmly following the child
restraint manufacturer's instructions.
Releasing the tether strap
- Loosen the tension following the child restraint manufac­
turer's inst ructions.
- Depress the spring catch on the hook and release it from
the anchorage.
0 Note
If you leave the child restraint with the tether strap firmly installed
for several days, this could leave a mark on the upholstery on the
seat cushion and backrest in the area where the tether strap was
installed. The upholstery would also be permanently stretched
around the tether strap. This applies especially to leather seats. •
Using tether straps on rearward-facing child
restraints
Currently, few rear-facing child restraint systems come with a tether.
P lease read and heed the child restraint system manufacturer's
instructions carefully to determine how to properly install the
tether.
Controls and equip­ ment Safety first Vehicle operation
& WARNING
A
child in a rearward-facing child safety seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates -even with an Advanced Airbag System .
• 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, or door.
• A tight tether or other strap on a rearward-facing child restraint
attached to the front passenger 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 registered can make
the 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.
• 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
There are a number of sources of additional information about child
restraint selection, installation and use:
NHTSA advises that the best child safety seat is the one that fits
your child and fits in your vehicle, and that you will use correctly and
consistently.
Try before you buy!
Vehicle care Do-it-yourself service Technical data

_1--_l_ n _t _ e _ll _,ig ,_,_ e_n _t _ t_ e_ c_ h_n _o_ l_ o ~g""- y.e- __________________________________________ _
Intelligent technology
Notice about data recorded by
vehicle control modules
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 retrieval 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, eng ine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehic le -related data
during norma l vehicle operation for diagnostic and repair purposes .
The recording capacity of the electronic cont rol 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 vehic le speed, direction,
braking as we ll as restraint system use and performance in the
event of a crash or other condition. Stored data can only be read and
downloaded with special equip men t.
Electronic Stabilization Program (ESP)
General
The Electronic Stabili ty Program increases driving
stability.
co ::,
_1, _ __ J"u. __ 11 ... _ ,.....u.,___,lli u.. _ .x,u _ _, r-u ~~ ~!' js:..~&c:',I
I
'
1 J
F ig . 15 8 Cente r
cons ole with E SP
sw itch
With ESP, control over the veh ic le is increased in situations when
the vehicle is close to the limits of grip, such as during acce leration
and in curves. ESP reduces the risk of skidding a nd improves vehicle
stability under all road conditions . It operates at all speeds .
The Anti-Lock Brake System (ABS), E lec tronic Differentia l Lock (EDS)
and Anti-Slip Regulation System (ASR) are integrated in the Elec­
tronic Stability Program .
How ESP work s
The ESP control unit processes the fo llowing data from high-sensi ­
tive sensors : the rotational speed of the vehicle about its vertica l
axis, fore -and -aft and lateral acceleration forces, brake pressure and
steering angle.
Using steering ang le and vehicle speed, the direction the driver
wishes to travel is determined and continuously compared with
t,.

actual vehicle behavior. If the two do not match, for example when
th e vehicle begins to skid, ESP brakes the appropriate wheel auto­
matical ly .
The vehicle is stabilized again by the forces acting on the wheel
during braking. With an oversteering vehicle (tendency for the rear
end to skid out of the curve), the brake application is mainly at the
front wheel on the outside of the curve, with an
understeering
vehicle (tendency to run wide in the curve) at the rear wheel on the
inside of the curve or additionally at the other wheels as needed.
This brake application is accompanied by noises.
ESP works in conjunction with ABS=>
page 192. If there is malfunc ­
tion in the ABS, ESP is also inoperative.
Activating
The ESP is automatica lly activated when the engine is started, and
it performs a self-test. As soon as the test is completed, the system
is in normal operating mode. With ASR deactivated, or with ESP/ASR
deactivated, pressing the button=>
page 188, fig. 158 returns the
system to normal operation.
Deactivating
ESP should normally be activated at all times because this ensures
optimum vehicle stability. Only in certain exceptional cases it does
make sense to deactivate Anti-Slip Regulation (ASR) or the Elec­
tronic Stability Program (ESP) by pressing the button =>
page 188,
fig. 158. Both deactivation stages can only be activated from normal
mode .
Deactivating ASR
Tap the switch. Deactivation is indicated by slow flashing of the ESP
lamp in the instrument cluster. In certain situations (e .g. driving
with snow chains, in deep snow or on loose ground, or when
rocking the car free), it may be necessary to deactivate ASR.
Deactivating ESP/ASR
Press the button for more than 3 seconds. Deactivation is indicated
by the ESP lamp in the ins trument cluster staying on permanently.
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
This
deactivates the Electronic Stability Program (ESP) in addition to
ASR. No Elec tronic Stability System operation and no Anti -Slip
Regulation is available across the entire speed range; ASR and ESP
are activated only when the brakes are used for the duration of the
braking action and remain active until a stable vehicle condition has
been reached. There is no driving situation which requires ESP to be
deactivated, so this should only be done if the driver's skill and the
traffic situation permit.
& WARNING
• The limits of physics cannot be suspended by ESP. Even in vehi­
cles with ESP. you should always adapt your driving to road and
traffic conditions. This is particularly true on a slippery and wet
road . Do not be tempted by the increased safety provided to take
risks -danger of an accident!
• Please note that when ASR or ESP /ASR is deactivated , the drive
wheels can spin on icy and slippery roads and the vehicle can
break away -danger of skidding!
Electronic differential lock CED1
.)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The elect ronic differential lock (EDU helps the car to start moving,
accelerate and c limb a gradient on surfaces providing poor or
a lmost no grip. Without EDL, this would be difficult, if not impos ­
s ible.
How the system works
The EDL operates automatical ly. It monitors the rotationa l speed of
the drive wheels on an axle with the help of the ABS sensors
=>
page 192. 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
Vehicle care Do-it-yourself service Technical data

-Intelligent technology
----'""------- ~---------------------------------------
to the other drive wheel or wheels (all-whee l drivel. 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 controlled.
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
pedal until the car starts to move. The wheel less able to transfer
power spins .
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads, the EDL cuts out temporarily. 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 16. •
Anti-Slip Regulat ion 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 192, 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 188, fig. 158 button. When it is activated,
the message
ESP/ASR on appears briefly in the display.
Deactivating
You can deactivate the ASR if required by pressing the button (for
less than 3 seconds)=>
page 188, fig . 158. With the ASR deactivated,
the ESP check light comes on, see=>
page 13. The message ASR off
appears in the display as well.
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

-Intelligent technology
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Brake lining wear status
Brake lining wear may be checked by visual inspection of the condi­
tion of the brake pads through the openings in the wheel. If neces­ sary, the wheel may be removed for this inspection=> page
270,
"Wheel change" .
L1}. WARNING
• You should perform braking maneuvers for the purpose of
cleaning the brake system only if road conditions 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 distance.
• 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 distance. Avoid driving the
& WARNING (continued)
vehicle and have it towed to the nearest authorized Audi dealer or
qualified workshop. •
Brake booster
The brake booster adds extra braking power.
The brake booster works with vacuum pressure which is created
only when the engine is running=>& .
L1}. WARNING
• Never let the vehicle roll to a stop with the engine shut off.
• If the brake booster is not working, for example when towing
your vehicle, or because the brake booster has somehow been
damaged, the brake pedal must be pressed considerably harder to
make up for the lack of booster assistance. •
Func ... ion=ng of Anti-Lock Brake System (ABS)
ABS prevents the wheels from locking up under braking.
The ABS contributes effectively to vehicle control since it prevents
the wheels from locking when the brakes are applied. This means
that the vehicle remains steerable and is less likely to skid.
With ABS you do not need to pump the brake. Just hold the brake
pedal down.
However, do not expect that the ABS shortens braking distance
under
all circumstances . When driving on gravel or on newly fallen
snow on top of icy surfaces, braking distance may be even longer,
therefore, under these circumstances, it is especially important that
you drive slowly and with great care. .,_