2009 AUDI S3 steering

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 194. 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 190, fig. 163 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 190,
fig. 163. 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!
[ i ] Tips
In the event of a defect in Audi magnetic ride, it can happen that
ASR and ASR/ESP cannot be deactivated, or they are activated auto ­
matically in the deactivated state.
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,
accelerate and c limb a gradient on surfaces providing poor or
a lmost no grip . Without EDL , this would be difficult, if not impos ­
sib le.
Vehicle care Do-it-yourself service Technical data

How the ABS system works
An aut omatic check is made whe n a speed of ab out 4 mph (6 km/h)
is reached. When this happens, a pumping noise can be heard.
I f an individua l wheel begins to rotate too slowly in relation to
ve hicle speed and ten ds to lock, the A BS automatical ly reduces
brake pressure to prevent that wheel from locking.
T his auto matic adjust ment p rocess wil l cause a
slight vibration o f
the brake peda l and some noises to alert you that veh ic le speed
must be ada pted to e xisting roa d and traff ic c onditions.
& WARNING
Although the ABS is very effective , always remember that braking
c apability is limited by tire tra ction . Always adjust your driving
speed according to the road and traffic conditions. Do not let the
extra safety afforded by the ABS tempt you into taking e xtra risks .
The ABS cannot overcome the laws of physics.
[ i ) Tips
• I f ABS is not functioning properly, a warning light wil l come on.
See
=> page 16.
• I f a fau lt occurs in the ABS, the E DL is als o not fu ncti onin g. This
is indicated by the ABS warning light. •
Brake assistant
The brake a ssi st ant is de sig ned to a chieve th e opti mum
b ra kin g eff ec t.
The brake assistant helps to increase the effective braking power
and thus to ac hieve a s horte r stop ping dis tance. If the drive r
presses the brake pedal very quick ly, the brake assistant automati ­
ca lly b oosts the braki ng force to the maximu m level, up to th e point
where the anti -loc k brake function (A BS) intervenes to stop the
whee ls from loc king. You should then keep the brake pedal pressed
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
until
the vehicle has braked to the required speed . The brake assis ­
t an t swi tc h es itse lf o ff as s oon as you r eleas e the b rake pe dal.
The brake assistant wi ll not be operative if there is a malfunction in
the ABS .
& WARNING
Please remember that the accident risk 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 . An increased accident
risk cannot be compensated even by the brake assistant , so
always maintain a safe speed. •
ciectro-mechanical power assist
Th e e le ctr o-me ch anic al pow er assis t helps the driv e r
w hen steerin g.
The degree of powe r ass ist is electronically matched to veh icle
speed .
The power steering system assists the driver so that he can steer the
ve hicle with re d uced p hysi ca l eff ort.
Power steering w ill not work if the eng ine is off . As a result, the
stee ring whee l wi ll be ha rd to turn .
& WARNING
If the system develops a problem , you must seek qualified profe s­
sional assistance .
0 Note
If there is an electronic ma lfunction, servotronic will still function
like a conventi onal power s teer ing sy stem , pr ovi din g a constant
steerin g support force that is no longer proportionate to the vehicle
Vehicle care Do-it-yourself service Technical data

__ _:_:ln..:..t::.: e::.: l~ li :.;:g t:e::..: n..:.. t:...::. te::::..:: c~h :.:.n .:..: o:::.: l:.: o :.;g~ yL- ________________________________________ _
speed. This is most noticeable when turning the steering wheel at
low speeds (for example when parking), -more effort will be
required than usual.
• Be aware of the different than usual steering response and
adjust your steering force accordingly.
• Have the problem checked and set right by an authorized Audi
dealer as soon as possible.
• If a steering malfunction occurs, this is signaled with the or.
@ indicator lights and a warning tone, see.
[ i) Tips
• If the power steering system should fail, or if the engine is not
running (for example, while being towed), you will still be able to
steer the vehicle. However, more effort will be required to do so.
• If the power steering system is not functioning properly, contact
your authorized Audi dealer immediately.
Applies to vehicles: with All Wheel Drive
Driving with your quattro®
With All Wheel Drive, all four wheels are driven.
General information
With All Wheel Drive, power is distributed to all four wheels. This
happens automatically depending on your driving style and the
road conditions at the time. See also::::,
page 191, "Electronic differ­
ential lock (EDU".
Winter tires
When driving in the winter, your vehicle with All Wheel Drive has an
advantage, even with regular tires. In winter road conditions it may
be advisable to mount winter tires (or all -season tires) for improved
driveability and braking: these tires must be mounted on
all four
wheels.
See also ::::, page 260, "Winter ti res".
Snow chains
Where snow chains are mandatory on certain roads, this normally
also applies to vehicles with all-wheel drive:::::,
page 261, "Snow
chains".
Replacing wheels/tires
Vehicles with All Wheel Drive must always have tires of the same
size. Also avoid tires with different tread depths. For details see
page ::::,
page 255, "New tires and replacing tires and wheels".
Off-Road driving?
Your Audi does not have enough ground clearance to be used as an
off-road vehicle. It is therefore best to avoid rough tracks and
uneven terrain as much as possible. Also refer to::::,
page 199.
& WARNING
Always adjust your driving to road and traffic conditions. Do not
let the extra safety afforded by the all-wheel drive tempt you into
taking extra risks.
• Although the quattro ®all-wheel drive is very effective, always
remember that braking capacity is limited by tire traction. You
should therefore not drive at excessive speeds on icy or slippery
road surfaces.
• On wet road surfaces, be careful not to drive too fast because
the front wheels could begin to slide on top of the water (hydro­ planing). If this should occur, you will have no warning from a
sudden increase in engine speed as with a front-wheel drive
vehicle. Always drive at speeds which are adjusted to the road
conditions -risk of crash!
n

___ T_ r _a_ il_e _r_ t_ o_ vv_ in__... g,_ __________________________________________________ _
Weig ht dis tributi on
Towing a loaded trailer with an empty car resu lts in a high ly
unstable distribution of weight . If this cannot be avoided drive at
very low speeds on ly to avoid the risk of losing steering control.
A "ba lanced" rig is easier to operate and control. This means that
the tow vehicle should be loaded to the extent possible and permis ­
sib le while keeping the trai ler as light as possib le under the circum ­
stances. Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle while observing tongue load requirements and vehicle loading considerations .
Speed
The higher the speed, the more difficult it becomes for the driver to
control the rig . Do not drive at the maximum permissible speed.
Reduce your speed even more under unfavorable load, weather or
wind conditions -particularly when going downhill.
Reduce vehicle speed
imm ed ia tely if the trailer shows the sl ightest
sign of swaying. Do not try to s top the s wayi ng by a ccelerating .
Observe speed limits . In some areas speeds for vehicles towing
trai lers are lower than for regular vehicles.
Always app ly brakes early. When driving downhill, shift into lower
gear to use the engine braking effect to slow down the vehicle. Use
of the brakes alone can cause them to overheat and fail.
C oo la nt tempe ra tu re
The coolant temperature gauge ~ page 9 must be observed care ­
ful ly. If the needle moves close to the upper end of the scale, reduce
speed immediately and/or switch off the air condit ioner.
If the coolant temperature warning light in the instrument cluster
starts flashing -~-, pull off the road, stop and let the engine
idle for
about two minutes to prevent heat build -up .
& WARNING
An yone not p rope rly res train ed in a mo ving vehi cle is a t a mu ch
gre ater risk in a n accident. Neve r let an yone ride in your car who
is not p rop erly we ari ng th e res tra int s pro vide d b y Aud i.
c
Trailer towing tips
Important to know
Your vehicle handles different ly when towing a trailer because of
the additional weight and weight distribution . Safety, performance
and economy w ill great ly depend on how carefu lly you load your
trailer and operate your rig.
Before you actually tow you r trailer, practice turn ing, stopping and
backing up in an area away from traffic. Keep practicing unti l you
have complete ly become familiar with the way your vehicle -trailer
combination behaves and responds .
Backing up is difficult and requires practice. Backing up with a
trailer genera lly requires steering ac tion opposite of that when
backing up your vehicle without a trailer .
Maintain a greater distance between your vehicle and the one in
front of you. You will need more room to stop.
T o compensate for the trailer, you wi ll need a larger than normal
turning radius .
When passing, remember that you cannot accelerate as fast as you n ormal ly wou ld because of the added load . Make su re you have
enough room to pass. After passing, al low plenty of room for your
trailer before changing lanes again .
Avoid jerky starts, sharp turns o r rapid lane changes.

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

___ T_ i_ r_e _s_ a_ n_ d_ w_ h_ e_ e _ ls _________________________________________________ _
Tire service life
The service life of tires depends on a Jot of different things
including proper installation and balancing, correct tire
pressure and driving style .
(r
l \._ _____ ;)
Tread Wear I nd ica tor ( TWll
Fig. 182 Tire tread:
tr ea d wea r ind ica tors
( TWIJ
Fi g. 1 83 Ro tati ng tir es
for mor e even wea r
The or iginal tires on your vehicle have 1/16 inch (1.6 mm) high "wear
indicators":::::, fig. 182 running across the tread . Depending on the
make, there will be six to eight of them evenly placed around the
tire . Marks on the tire sidewall (for example "TWI" or other symbols)
indicate the positions of the tread wear indicators . Worn tires must
be replaced. Dif ferent figures may apply in other countries:::::,&.
Tir e p re ss ure
Incorrect tire pressure causes premature wear and can cause
sudden tire blow-out . For this reason, tire pressure must be checked
at least once a month :::::,
page 250.
Drivin g sty le
Driving fast around curves, heavy acce leration and hard braking
increase tire wear .
Rotating tires for more even wear
For all four tires on your vehicle to have the same service life, we
recommend that the front and rear tires are rotated according to the
tire manufacturer's suggested tire rotation intervals . Please
r emember the following:
• Tire rotation interva ls may differ from the vehic le service inter ­
vals outlined in your Warranty
& Maintenance Booklet.
• The longer one tire is used in one location on the vehicle, the
more it wears at certain points; therefore, we recommend that you
follow the tire manufacturer's suggested tire rotation intervals.
• Vehicles with front -wheel drive experience mo re tread wear on
the front wheels compared to all-wheel drive (quattro®) .
• Please rotate tires as shown :::::, fig . 183.
• Extra care must be taken when rotating direction -specific tires
:::::, page 279.
Whe el b ala n cing
The wheels on new vehicles are balanced. However, various situa­
tions during everyday driving can cause them to become unba l­
anced, resulting in vibrations you can usual ly feel through the
steering wheel.
Unba lanced whee ls must be rebalanced to avoid excessive wear on
steering, suspension and tires. A wheel must a lso be reba lanced
when a new tire is installed.
~

11111.___F_ u_ s _ e_s _ a_n _ d_ b_ u_lb _ s _______________________________________________ _
Equipment Amps No. Equipment Amps
Manual headlight beam adjustment, automatic 14 Electronic Stabilization Program (ESP) (control
10
1 headlight beam adjustment, AFS control mod-
10 module),
shift gate automatic transmission
ule, engine components, light switch (switch
15 Interior lights, reading lights 10
lighting/illumination), diagnosis socket
Diagnostic connector, rain sensor, a ir condit ion-
!! Automatic transmission, control module for
16 ing (control module), tire pressure monitor dis- 10
CAN data transfer (gateway), electro -mechanical
play (control module)
steering, shift gate automatic transmission, 17 Anti-theft alarm warning system 5
2 engine relay, fuel tank control unit, engine con
-10
trol unit, brakes control (ABS), Electronic Stabili- 18 Terminal 15
5
zation Program (ESP), Anti -Slip Regulation
19 All Wheel Drive
10
(ASR), brake light switch
-20 Magnetic ride 5
3 Airbag
5
-21 Not used
Air -conditioning (pressure sensor, air quality
sensor), button for Electronic Stabilization Pro- 22
Blower fan 40
gram (ESP), Anti -Slip Regulat ion (ASRl, tire pres -
23 Driver's side power window, front 30
sure mon itor display, oil level sensor, back-up
4 light switch, front seat heating, parking aid, 5 24 Power outlet front
20
seat-occupancy recognition (on USA vehicles), 25 Rear window defogger 30
navigation, garage door opener, automatic mir- 26 Power outlet in luggage compartment 20
ror dimming, heated windshield washer noz-
zles, air conditioning (control module) 27 Fuel tank control module, fuel pump 15
5 AFS headlights (left side)
5 28 Power
window, rear
30
6 AFS headlights (r ight side) 5 29 Not used
7 Not used 30 Not used
8 Not used 31 Automatic transmission (vacuum pump)
20
9 Not used 32 Headlight washer system 30
10 Not used
33 Sliding/pop-up roof
20
1 1 Not used 34 Not used
12 Central locking (front doors} 10 35 Not used
13 Central locking (rear doors) 10
36 Lumbar
support 10

IIJII Fuses and bulbs i,.__....;,___;:,,;_,;,,.:_;__;;:_.:.:..:..=-=;____ ______________________ _
No. UEquipment Amps I No. Equipment Amps
F6 Steering wheel electronics, instrument cluster
5 F28
Not used
F7 Transmission control module 30 Fuse assignment in the left-side instrument
F29 50
F8 Navigation system, radio system 15/25 panel (special equipment)
Navigation system, digital radio, cell phone, TV F30 Power supply relay terminal
15 50
F9 equipment 5
F10 Engine control module, main relay 5/10 Variation
(2) with 54 Plug-in Fuses
F11 Not used No. Equipment
Amps
Control module for CAN data transfer (gateway) 5 F1
Vehicle
electrical system control unit (right)
30
F13 Engine control module 15/25 F2
ESP valves, Anti
-lock brake system (ABS) valves
20/30
F14 Ignition coils 20 F3 Not used
F15 Tank diagnosis, oxygen sensor 5/10 F4
Battery voltage
5
F16 Vehicle electrical system control unit (right) 30 F5 Horn
15
F17 Horn
15 F6 Engine components, fuel pump 15
F18 Audio amplifier 30 F7
Not used
F19 Front windshield wiper system 30 F8
Not used
F20 Water return
-flow pump, volume regulator valve F9 Engine components
10
F21 Oxygen sensor, vacuum pump 15 F10
Fuel tank control, mass air flow sensor
10
F22 Clutch pedal switch, brake light switch 5 F11 Oxygen sensors, in front of catalytic converter 10
F23 Engine relays, engine components
5/10/15 F12 Oxygen sensors, behind catalytic converter
10
F24 Engine components, water return-flow pump 10 F13 Automatic transmission
15
F25 Pump (ESP/ABS), ABS valve 30/40 F14 Not used
F26 Vehicle electrical system control unit (left)
30 F15 Water return-flow pump
10
F27 Secondary air pump 40 F16 Volume control valve
20
F17 Steering wheel electronics, instrument cluster
5
F18 Audio amplifier 30
F19 Navigation system, radio system 15/25