wheel AUDI A5 COUPE 2010 Owner's Guide

-L~A:::..:,: ir:....: b:!..::: a~g L.:: s:1y :...:s::..: t~ e:.: m:...:...:.. ________________________________________________ _
or the lower parts of the body. Front airbags only supp lement the
th ree p oint safe ty belts in som e front al co llis ions in which the
vehic le dece leration is h igh enou gh to deploy the a irba gs.
Front airbags will not deploy:
• if the ignition is switched off when a crash occurs,
• i n sid e collis io ns,
• i n rea r- e nd collisi ons ,
• in ro llovers,
• when th e c ras h de celerat io n measur ed by the a irba g system is
less than the minimum threshold needed for a irbag deployment as
r egi stere d by th e ele ctro nic con trol uni t.
The front passenger airbag will also not deploy :
• when th e fr ont pass enger seat is no t occupi ed,
• when the weight on the front passenger seat a s sensed by the
A dvanced A irbag Syste m indica tes tha t the fr ont air bag o n the
passenger side has to be turned off by the e lectronic cont rol unit
(t he PASSENGER AIR BAG OFF li gh t comes o n and s tays o nl.
& WARNING
Sitting in the wrong position can increase the risk of serious injury
in crashes .
• To reduce the risk of injury when the airbags inflate , the driver
and passengers must always sit in an upright position , must not
lean against or place any part of their body too close to the area
where the airbags are located.
• Occupants who are unbelted , out of position or too close to the
airbag can be seriously injured by an airbag as it unfolds with
great force in the blink of an eye=> page 190.
& 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 , door or roof.
• Always install rear-facing child safety seats on the rear seat.
• 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, i mmediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
authorized Audi dealer .
& WARNING
Objects between you and the airbag will increase the risk of injury
in a crash by interfering with the way the airbag unfolds or by
being pushed into you as the a irbag inflates .
• Never hold things in your hands or on your lap when the vehicle
is in use.
• Never transport items on or in the area of the front passenger
seat. Objects could move into the area of the front airbags during
braking or other sudden maneuver and become dangerous projec ­
tiles that can cause serious personal injury if the airbags inflate .
• Never place or attach accessories or other objects (such as
cupholders, telephone brackets , large, heavy or bulky objects) on
the doors , over or near the area marked "AIRBAG" on the steering
wheel , instrument panel , seat backrests or between those areas
and yourself . These objects could cause injury in a crash , espe­
cially when the airbags inflate .
• Never recline the front passenger's seat to transport object s.
Items can also move into the area of the side airbag or the front ..,

lffl) __ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
& WARN ING (continued )
seating posit ion and have the airb ag system inspe cted by your
authorized Audi dealer.
• A t ight tether or other strap on a rearward-fa cing child restr aint
att ached to the front pas senger se at can put too much pres sure
on the weight-sensing mat in the seat and reg ister more weight
than is actually on the seat. The heavier weight registered can
m ake the system work as though an adult were on the seat and
deploy the Advanced Airbag when it must be suppressed cau sing
ser ious or even fatal injury to the child .
• If, in exceptional circumstance s, you mu st in stall a forward ­
f a cing child restraint on the front passenger seat , always move the
seat into its rearmost position in the seat's fore and aft adjust ­
ment range , as far away from the airbag as po ssible . The ba ckrest
must be adjusted to an upright position. Make sure that the
PASSENGER AIR BAG OFF light comes on and stay s on all the time
whenever the ignition is switched on .
& WARNING
• If the PASSENGER AIR BAG OFF light does not go out when an
adult is sitting on the front passenger seat after tak ing the step s
described above, make sure the adult is properly seated and
restrained at one of the rear seating posit ions .
• Have the airbag system inspected by your authorized Audi
dealer before transport ing anyone on the front passenger seat .
[ i ] Tips
If the weight -sensing mat in the front passenger seat detects an
e m pty seat , the front a irbag on the passenge r side wil l be tur ned
off, and PASSENGER AIR BAG OFF will stay on.•
Repair, care and disposal of the airbags
P arts of the airbag system are installed at many different p laces on
you r Aud i. Insta ll ing, r emoving, servic ing or repa iring a pa rt in an
area of the vehicle can damage a part of an airbag system and
p revent that sys tem from working pr operly in a c ollisi on.
There are some important things you have to know to ma ke sure
t h at the effective ness of the system will not be impai red and that
discarded co mponents do not cause injury or po llute the env iro n­
ment .
& WARNING
Improper care , servicing and repair procedures can increase the
risk of personal injury and death by pre venting an airbag from
deploying when needed or deploying an airbag unexpectedly:
• Never cover , obstruct , or change the steering wheel horn pad
or airbag cover or the instrument panel or modify them in any way .
• Never attach any objects such as cupholders or telephone
mountings to the surfaces covering the airbag units .
• For cleaning the horn pad or instrument panel , use only a soft,
dry cloth or one moistened with plain water. Solvents or cleaners
could damage the airbag cover or change the stiffness or strength
of the material so that the airbag cannot deploy and protect prop ­
erly .
• Never repair , adju st, or change any parts of the airbag sy stem .
• All work on the steering wheel , instrument panel , front seats or
electrical system (including the installation of audio equipment,
cellular telephones and CB radios , etc .I must be performed by a
qualified technician who has the training and special equipment
necessary .
• For any work on the airbag system, we strongly recommend
that you see your author ized Audi dealer or qual ified workshop .
• Never modify the front bumper or parts of the vehicle body .

___ A_ ir_b _a_ g;:::;_ s--:.. y_s _t _e _m _________________________________________________ _
& WARNING
Changing the vehicle's su spension includ ing use of un approved
tire -rim combinations can change Advanced Airbag performance
and increase the ris k of serious personal injury in a crash .
• Never install suspen sion component s that do not have the
same performance chara cteristics as the components or iginally
installed on your vehicle.
• Never use tire-r im comb inations that have not been approved
by Audi.
& WARNING
Items stored between the safety belt bu ckle and the center
c onsole can cause the sensors in the buc kle to send the wrong
information to the electroni c control module and prevent the
Advanced Airbag System from working properly .
• Alway s make sure that nothing can interfere with the safety
belt buckles and that they are not obstructed .
<£> For the sake of the environment
Undeployed airbag modules and pretensioners might be classified
as Perchlora te Mater ial -specia l handling may a pply, see
www.dtsc.ca.gov/hazardouswaste/perchlorate. When the vehicle or
par ts o f the res traint system inclu ding airbag modules sa fe ty be lts
with pretensioners are scrapped, a ll applicable laws and regu la ­
tions mu st be o bserved. You r aut hor ize d Au di d eale r is fami liar with
these requirements and we recommend that you have your dea ler
perform this service for you. •
Knee airbags
Applies to vehicles: with knee air bags
Description of knee airbags
The airbag system c an provide supplemental pr otection
to pr operly res traine d fron t sea t occupan ts .
....
! 00 m
F ig . 19 8 Drive r's kne e
airba g
The knee a irbag for the driver is located in the instrument panel
underneath the stee ring wheel => fig. 19 8, the knee air bag for the
passeng er is at about the same height in th e instrument pane l
underneath the glove compartment .
Th e kn ee ai rbag offers addi tional pr otec tion to the d river's a nd
passenger 's knees and upper and lower thigh a reas as a supple ­
me nt to t he sa fety be lts .
I f the front airbags deploy , th e knee airbags also deploy in frontal
collisions above a certain severity=>
page 197, "M ore important
things to know about front airbags".
Besides their normal safety function, safety belts wor k to help keep
th e dri ver o r fr on t passeng er in pos itio n in case of a fro ntal col lis io n
so that the airbags can provide protection .
T he airbag system is not a substitute for your safety belt . Rathe r, it
is part of the overall occupant restra int system in your vehicle .
A lwa ys remember that the airbag system can only help to protect .,,_

-Airbag system -----~~---------------------------------------------------------
If the front airbags dep loy, the knee airbags also dep loy in frontal
c ollis ions ab ove a cer tai n se ver ity.
When the system is deployed, the airbags start to f ill with a prope l­
lant gas, and inf late between the lower part of the instrument pane l
and t he dr ive r and the lowe r pa rt o f the instrument pane l and t he
front passenger ~
page 197, fig. 196.
Althoug h they are no t a so ft pi llow, t hey can "cushion" th e impac t
and in this way they can he lp to reduce the risk of injury to the lower
e xtr em it ies .
A ll t his takes p lace instantaneously, so fast t hat many people do n't
even realize that the ai rbags have deployed. The airbags a lso inflate
w it h a great deal o f force and it is impor tant for occupan t sa fety t hat
nothing shou ld be in their way when they dep loy.
F u lly infla ted ai rbags i n co mb ination with p roperly worn safety bel ts
s low down and limit the occupant's forward movement and he lp to
r educe the ris k.•
A pplies to veh icles: with knee airbags
Important safety instructions on the knee
airbag system
A irbags are only supplemental rest rain ts . A lways wear
s a fet y be lts c orr e ctl y and r id e i n a pr oper sea tin g po sition.
There is a lot that you and your passengers must know and do to
h e lp the safe ty belts an d airb ags to p rovide sup plemental protec ­
tion .
& WARNING
An inflating knee airbag can cause serious injury. Wearing safety
belts incorrectly and improper seating po sitions increase the risk
of serious personal injury and death whenever a vehicle is being
used.
& WARNING (continued)
• The airbag system cannot protect you properly if you are
seated too close to any of the airbag locations. When adjusting
their seat positions , it is important that both the driver and the
front passenger keep their upper bodies and knees at the
follow ing minimum safe distances :
- 10 inche s (25 cm) between the chest and the steering
wheel/instrument panel .
- 4 inches (10 cm) between the knees and the lower part of the
instrument panel.
• The risk of personal injury increases if you lean forward or to
the side , or if the seat is improperly positioned and you are not
wearing your safety belt . The risk increases even more should the
airbag deploy .
• Always make sure that the knee airbag can inflate without
interference . Objects between yourself and the airbag can
increase the risk of injury in an accident by interfering with the
way the airbag deploys or by being pushed into you as the airbag
deploys.
-No persons (children) or animals should ride in the footwell
in front of the passenger seat . If the airbag deploys , this can
result in serious or fatal injuries .
- No objects of any k ind should be carried in the footwell area
in front of the driver's or passenger's seat. Bulky objects (shop ­
ping bags , for example) can hamper or prevent p rope r deploy ­
ment of the airbag. Small objects can be thrown through the
vehicle if the airbag deploys and injure you or your passengers .
• Make sure there are no cracks, deep scratches or other damage
in the area of the instrument panel where the knee airbags are
located.
• If children are in correctly seated , their risk of injury increases in
the case of an accident~
page 213, "Child Safety". •

-Child Safety ------=---------------------------------
& WAR NIN G (co ntinued )
• Alw ays inst all r ear ward-f acing child safet y sea ts on the r ear
s eat.
• If you must in stall a r earward facing child saf ety seat on the
front p assenger seat in e xcept ion al circum sta nce s and the
PASSENGER AIR BAG OFF light doe s not come on and stay on ,
imm edi atel y ins ta ll the re arw ard -fa cin g child safety seat in a re ar
s eating po sit ion and have the airb ag s ystem inspe cted immedi­
a tely by your autho rized Audi dealer .
& WARNING
If, in e xce ptional cir cum sta nces, you mu st in stall a fo rward-fa cing
c hild restraint on the front p asseng er's seat :
• Alway s m ake s ure the forw ard -fa cing seat h as been de signed
and cert ified by its manufacturer for use on a front seat with a
passenger front and side airbag.
• Alway s follow the m anufacturer's instructi on s provided with
the child s afety seat or carrier .
• Alway s move the p assenger seat into it s rearmo st position in
the seat's fo re and aft adju stment range , as far a way from the
airbag a s po ssible b efore in stalling the child restraint. The ba ck­
rest must be adjusted t o an up rig ht position .
• Alway s m ake sure that the PA SSENG ER AIR BAG OFF light
c ome s on and stays on all the time whenever the ign iti on is
switched on. •
Advanced front airbag system and children
Your vehicle is equipped with a front "Advanced Airbag System" in
compliance with United States Federa l Motor Vehicle Safety Stan ­
dard (FMVSS) 208 as applicable at the time your vehicle was manu ­
factured . 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 younge r, 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 ..,.

The system operates across the entire speed range in combination
with the ABS system. If the Anti -Lock Brake System (ABS) ma lfunc­
tions, the ESP wil l also shut down .
How the system works
The Anti -Lock Brake System (ABS), Electronic Differential Lock (EDU
and the Anti -Slip Regulation System (ASR) are integrated in the elec­
tronic stabilization program. In addition to the data provided by
th ese functions, the ESP control unit requires additional measure ­
ment data provided by high performance sensors . The rotational
speed of the vehicle about its vertica l axis, vehicle acceleration in
the fore-and-aft and lateral directions , the brake pressure, and the
steering angle are all measured.
The direction in which the driver wishes to travel is determined with
the 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 vehicle starts hydrop laning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the prob lem.
The vehicle is then stabi lized by the forces acting on the whee l
during braking. If the vehicle is
oversteering (the vehicle turns too
sharply and the rear wheels slide toward th e ou tside of a curve), the
brakes are main ly app lied on the wheel that is on the outside of the
curve . In the case of a vehicle that is
understeering (the vehicle does
not turn sharply enough and pushes out of a curve), the brakes are
applied as needed on the wheel that is on the inside of the curve or
additional ly on the other wheels. An acoustic signal indicates when
ESP brake app lication cuts in=>&.
T he system operates across the entire speed range in combination
with the ABS system =>
page 238. If the Anti-Lock Brake System
(ABS) malfunctions, the ESP will be out of action as well.
Activating
When you turn on the engine, ESP will automatica lly 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.
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
You
can activate a deactivated ESP or deactivated ESP/ASR if
required by pressing the::::>
page 234, fig. 215 ::::> page 234, fig. 214
button . When they are activated, the message
ESP /ASR on appears
briefly in the display .
Deactivating
The ESP should normally be activated al l the time. If necessary, you
can deactivate Anti -Slip Regu lation (ASR) or the Electronic Stabiliza­
tion Program (ESP) by pressing the button=>
page 234, fig. 215.
• Deactivating ASR: Tap the button . In certain exceptional situa­
tions (e .g. driving with tire chains), the Anti-Slip Regulation (ASR)
can be deactivated =>
page 236. The message ASR off appears in the
display as we ll.
• Deact ivating ESP/ASR Press the button for more than 3 seconds.
With the ESP/ASR deactivated, the indicator light comes on, see
=>
page 13. The message ESP switched off appears in the disp lay as
we ll.
& WARNING
The Electronic 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 Elec­
tronic 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 (EDU helps the car to start moving,
acc elerate and c limb a gradient on surfaces providing poor or
Vehicle care Do-it-yourself service Technical data

ll}JI Intelligent technology
---""'------------ ....::....:...:~---------------------------
almost no grip. Without EDL, this would be difficult, if not impos­
sible.
How the system works
The EDL operates automatically. It monitors the rotational speed of
wheels with the help of the ABS sensors=:,
page 238 . If a noticeable
slip is detected at the wheels (e.g. on slippery ground on one side),
the spinning wheels are braked and power is transferred to the
other wheels. 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, apply
plenty of throttle until the car starts to move.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads on this wheel, the EDL cuts out tempo­ rarily. 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 15. •
Anti-Slip Regulation 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 238, ASR monitors the
speed of the driven wheels. If the wheels start to spin, 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.
The 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 234, fig. 215 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 234, fig. 215. 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 can be deactivated at any
speed.
The ASR should normally be activated all the time . Only in certain
exceptional situations when some s lip is desirable does it make
sense to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck.
When the abnormal situation is over, you should activate the ASR
again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i ] Tips
To ensure that the ASR works properly, al l four wheels must be fitted
with identical tires. Any differences in rol ling radius of the tires can
cause the system to reduce engine power when this is not desired.
See also :::::>
page 299, "New tires and rep lacing tires and wheels" .•
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automobiles are still subject to wear,
depending large ly on operating conditions and driving habits:::::>& .
On vehicles that are either driven mostly in stop-and-go city traffic
or are driven hard, the brake pads should be checked by your autho-
Intelligent technology
rized Audi dealer more often than specified in the Warranty & Main­
tenance booklet.
Fai lure to have your brake pads inspected can
resu lt in reduced brake performance .
On steep slopes, you shou ld use the braking effect of the engine.
This way, you prevent unnecessary wear on the brake system. If you
must use your brakes, do not hold the brakes down continuous ly.
Pump the brakes at intervals.
Moisture or road salt
If you are driving faster than 31 mph (50 km/h) and the windshield
wipers are on, the brake pads will briefly touch the brake discs in
regular intervals so as to improve reaction time when braking on
wet surfaces. You , the driver, wil l not notice anything.
Under certain conditions, for example, when driving th rough water
or very heavy rain , or even after washing your vehicle , the braking
effect can be reduced due to moisture (or in freezing conditions ice)
on the brake pads. A few careful brake applications should dry off
the brake pads or remove any ice coatings .
The ef fectiveness of the brakes can be reduced when the vehicle is
driven on a salt -covered road and the brakes are not used . Here too ,
you should clean off accumulated sa lt coating from brake discs and
pads with a few carefu l applications of the brake:::::>&.
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corrosion to form on the discs if the car is not drive n regularly or
only for short trips with litt le use of the brakes .
I f the brakes are not used frequently, or if corrosion has formed on
the discs, it is advisable to clean off the pads and discs by braking
firm ly a few times from a moderately high speed:::::>& .
Faults in the brake system
If you shou ld notice a sudden increase in brake pedal travel, then
one of the two brake circuits may have failed:::::>&. ..,
I t •

ll}Jl __ ln_t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_h _ n_o _ l_o _,.g= y,_ __________________________________________ _
Low brake fluid level
Ma lfu ncti ons can occ ur in th e brake system if the bra ke flu id leve l is
too low. The brake fluid leve l is monitored e lectronically.
Brake lining wear status Bra ke lining wear may be checked by visual inspection of the condi ­
t ion of the brake pa ds through the o pen in g s in t he wheel. If neces ­
sary, the wheel may be removed for this inspection=>
page 312,
" C hanging a whee l" .
& WARNING
• You should perform braking maneuver s for the purpose of
cleaning the brake system only if road cond itions permit . Other
road u sers must not be put at risk -you may cause an accident !
• Before des cending a steep grade , reduce speed and shift trans ­
mission into a lower gear or lower driving range. Do not ride the
brake s or hold the pedal down too long or too often . This could
c ause 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, p rem ature wear and in creased stopping distance .
• Under certain climatic and operating conditions such as
passing through water , driv ing 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 afte r a few careful b rake appli cations .
• Driving for an extended period of time on salt -covered roads
without using your brakes can also affe ct braking effic ien cy. 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 obstru cted .
Otherwise the brake system could overheat reducing the effe ctive­
ness of the entire brake system .
& WARNING (continued )
• Failure of one brake circuit will impair the braking capability
resulting in an increased stopping distance . Avoid driv ing the
vehicle and have it towed to the nearest authorized Audi dealer or
qu alified workshop. •
Brake booster
The bra ke boos ter adds e xtra bra king pow er.
Th e brake boost er wo rks wit h vacuum p ressu re wh ich is created
only when the engine is running=>& .
& WARNING
• Never let the vehicle roll to a stop with the engine shut off.
• If the brake booster is not working , for e xample 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 . •
Functioning of Anti-Lock Brake System (ABS}
A BS p revents t he wheels from lockin g up unde r braking.
The ABS co ntrib utes effectively to ve hic le c ont ro l since it preven ts
the whee ls from locking when the bra kes are app lied. Th is means
that the vehicle remains stee rable and is less l ikely to skid .
With ABS you do not need to
pump the brake. Just hold the brake
pedal down .
Ho wever , do not e xpect the AB S to sho rten braking d istance under
all circumstances. When driving o n grave l or on newly fallen snow
o n t op of icy su rfaces, b raking distance may be even lo nger, there ­
f ore, unde r these circumsta nces, it is especially impo rtan t th at you
drive slow ly and with great ca re. ._

How the ABS system works
An au tomatic check is made when a speed of about 12 mph (20
km/h) is reached. When this happens, a pumping no ise can be
heard .
I f an individua l wheel begins to ro tate too s low ly in relation to
vehic le speed and tends to lock, the ABS automatical ly reduces
b rake pressure t o preven t tha t whee l from locking.
This automatic adjustment process wil l cause a
slight vibration of
t he brake peda l and some noises to ale rt you tha t veh ic le sp eed
must be adapted to existing road and traffic conditions.
in. WARNING
Although the ABS is very effe ctive , always remember that braking
c apability is limited by tire traction. Always adjust your driving
speed a ccording to the road and traffi c conditions. Do not let the
extra safety afforded by the ABS tempt you into taking extra risks.
The ABS c annot overcome the laws of physics .
[ i J Tips
• I f ABS is not functioning properly, a warning l ight wil l come on .
See
~ page 15.
• I f a fau lt occurs in the ABS, the EDL is also not funct ioning. This
is indicated by the ABS warning light .
Brake assist
Brake assist is designed to achieve the optimum brakin g
effect.
B rake a ssist hel ps to in crease the eff ective b raking powe r an d t hus
to achieve a shorter stopping distance. If the driver presses the
br ake pe dal ve ry q uickl y, br ake a ss is t auto matically boo sts t he
braking force to the maximum lev el, up to the point where the anti ­
lock b ra ke function (ABS) intervenes to stop the wheels from
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
locking
. You shou ld then keep the brake pedal pressed until the
ve hic le has braked to the required spee d. Brake assist swi tches itse lf
off as soon as you release the brake pedal.
in. WARNING
Please remember that the accident r isk always increases if you
drive too fast , espe cially in corners or on a slippery road , or if you
follow the vehicle ahead of you too closely. Increa sed risk of an
accident cannot be compensated for even by brake as sist , so
always maintain a safe speed .•
Servotronic® -advanced power
steering system
The pow er st eer in g systems uses th e po we r of t he
run nin g eng ine to a llow prec ise s tee ring with lit tle eff ort.
The advanced S ervotronic ® power steering system senses the road
s p eed and electr onically a djusts power assis tance t o provide
comfortab le and safe steering response exactly matched to the
ve hicle speed .
Power steering wi ll n ot work if the eng ine is off. As a result, the
steering whee l wil l be hard to turn.
Th e power s teering flu id leve l is check ed during the sc hed uled
maintenance services .
0 Note
If there is an electronic ma lfunction, servotronic wi ll still function
like a conventi onal power s teer ing sys te m , pr ovi ding a constan t
steering support force that is no longer proportionate to the vehicle
speed. This is mo st noticeable when tu rning t he steering whee l at
low speeds {for examp le when parking), -more effort wi ll be
r equired than usual.
~
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