2011 AUDI A3 tires

Driver information display
• Gear shift recommendation can be deactivated in the dr iver infor­
mation system~
page 22. •
On-Board Diagnostic system (OBD)
On-Board Diagnostics
Fig. 9 Location of
Data Link Connector
(DLC)
On-Board Diagnostics monitors the components of your emission
control system. Each controlled component in your eng ine system
has been assigned a code. In case of a malfunction, the component
wi ll be identified and the fault stored as a code in the control module
memory .
The MIL lamp may also illuminate if there is a leak in the on-board
fuel vapor recovery system.
If the Light illuminates after a refuelling,
pull off the road and stop the vehicle, then check that the fuel filler
cap is properly closed~
page 222.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnostic equipment (generic scan tool for
OBD).
In order to connect the special diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is located to the right of
the engine hood release lever~ fig. 9. Your authorized
Audi dealer or a qualified service station can inter­
pret the code and perform the necessary repair.•
Malfunction Indicator Lamp (MIL) (USA
models) / (Canada models )
The Malfunction Indicator Lamp (MIL) in the instrument cluster
~ page 11, fig. 5 is part of the On-Board Diagnostic (OBD II) system.
T he warn ing/indicator light illum inates when the ignition is switched
on and goes out after the engine starts and the idle has stabilized.
This indicates that the MIL is working properly .
If the light does not go out after the engine is started, or illuminates
while you are driving, a malfunction may exist in the engine system.
If the light illuminates, the catalytic converter could be damaged.
Continue driving
with reduced power (avoiding sustained high
speeds and/or rapid accelerations) and have the condition corrected.
Contact your authorized Audi dealer.
If the light illuminates, the electronic speed limiter may also be
ma lfunction ing. For more information~
page 20, "E lectronic speed
limiter" .
An improperly closed fuel filler cap may also cause the MIL light to
illuminate~
page 222 . •
Electronic speed limiter
Your vehicle may be factory equ ipped with tires that are rated for a
maximum speed of 130 mph (210 km/h). This is less than the
maximum speed of your veh icle . To reduce the risk of sudden tire
fai lure and loss of control if the vehicle is operated at excessive
speeds, your vehicle a lso has an electronic speed limiter . The elec­
tronic speed limiter prevents your vehicle from going faster than the
tire speed rating. For more information~
page 259, "Speed rating
(letter code)".
~

If the engine control unit receives faulty vehicle roadspeed signals,
t he Mal func tion In dica tor Ligh t (M IL)
t::: will illuminate. If th is
occu rs, contact the nearest authorized Audi dea ler fo r ass istance .
& WARNING
Always observe the posted speed limits and adjust your speed to
suit prevailing road, traffic and weather conditions. Never drive
your vehicl e faster than the m aximum speed rating of the tires
in stalled .•
Trip computer
Introduction
The trip com puter gives you informati on on current a nd
average fuel mileage, a verage speed , fu el range and
driving time.
F ig . 1 0 T rip c ompute r
1
You can switch between the t rip computer 1 an d 2 by p ressing the
[ Reset ] bu tton @ ~ page
22, fig . 11.
You can tell wh ich memory level is currently active by the number in
t he display~ fig. 10. The da ta from t he single -trip memo ry (memory
level 1) is being d isp layed if a
1 appears in the display . If a 2 is shown,
Controls and equip ­
ment Safety first
Driver information display
t
hen the data from the total-trip memory is be ing d isplayed (memory
level 2).
Single-trip memory (Trip computer 1)
Th e sing le- tri p memory sto res t he trip in forma tion from the t ime the
ignition is turned on until it is turned off. If the trip is continued
within 2 hours from the t ime t he ign ition was turned off, the new
data will be included in the ca lculat ion of the c urren t tr ip i nforma­
t ion. If th e t rip is interrupted for
more than 2 hours the memo ry is
reset automa tically .
Total-trip memory (Trip compu ter 2 )
Unlike the single-t rip memory, the total-trip memory is not reset
au tom atically . This permi ts you to ev aluate your d riving data for the
en tire pe riod be twee n manual resets.
Fuel range
The est imated cru is ing range in mi les (km) appears in the display. The
display changes in inc rements of 6 mi les (1 0 km).
Average fuel mileage
The ave rage fuel e co nomy in MP G (l/100 km) s in ce you last clea red
the memory appears in this d isp lay.
Current fuel mileage
Th e instantaneous f uel cons umption in miles pe r ga llon ( l/100 km) is
show n in this d is pl ay. W hen the veh icle is st ationary, the most recent
fue l cons umption is displayed.
Average speed
The average speed in mph (km/h) since the last t ime the display was
reset appea rs in the display .
Elapsed time
T he lengt h of t ime that you have been drivi ng s ince you last reset the
memo ry appears in this dis pl ay . The maxim um time period that can
be recor ded is 999 ho urs and 59 minu tes . .,
Vehicle care Technical data

Driver information display
tional mileage driven or the elapsed days will be shown as negative
numbers.•
Speed warning system
Overview
The speed warning system helps you to keep your driving
speed below a set speed limit.
Fig . 21 Di splay: speed
warning system
The speed warning system warns the driver if he exceeds a previously
stored maximum speed. A warning tone will sound as soon as the
vehicle speed exceeds the set speed by about 3 mph (3 km/h). At the
same time, a warning symbol appears in the display => fig. 21.
The speed warning system has
two warning thresholds that function
independently of each other and that have somewhat different
purposes:
Speed warning 1 "" / (Canada
models)
You can use speed warning 1 to set the maximum speed wh ile you are
driving. This setting will remain in effect until you turn off the igni­
tion, assuming that you have not changed or reset the setting. The speed warning symbol
(
I (Canada models) in the warning 1
display appears when you exceed the maximum speed.
It goes out
when the speed falls below the stored maximum speed.
Th e speed warning symbol will also go out if the speed
exceeds the
stored maximum speed by more than about 25 mph (40 km/h) for at
least 10 seconds. The stored maximum speed is deleted.
Sett ing speed warn ing 1 =>
page 29.
Speed warning 2 I (Canada models)
Storing warning 2 is recommended if you always want to be reminded
of a certain speed, for example when you are traveling in a country
that has a general maxim um speed limit, or if you do not want to
exceed a specified speed for winter tires.
The speed warning 2 symbo l, / (Canada models) appears in the
display when you exceed the stored speed lim it. Unlike warning 1, it
will not go out until the vehicle speed drops below the stored speed
limit.
Setting speed warn ing 2 =>
page 29.
[ i ] Tips
Even though your vehicle is equipped with a speed warning system,
you should still watch the speedometer to make sure you are not driving faster than the speed limit .•

-L_!:D~ r!:_! i~v ~in ~ g~S~ a.!_fe ~ LyL __________________________________________ _
& WARNING (conti nu ed )
• Never tran sport object s larger than those fitting completely
into the luggage are a because the rear lid cannot be fully clos ed.
• If you absolutely must dri ve with the rear lid open , observe the
following note s to reduce the risk of po isoning:
- Clo se all windows,
- Close the power roof*,
- Open all air outlets in the instrument panel,
- Switch off the air recirculation ,
- Set the fresh air fan to the h ighest speed.
& WARNING
Always make sure that the doors , all windows, the power roof*
and the read lid are securely closed and lo cked to redu ce the ri sk
of inju ry when the vehicle is not being used.
• After closing the r ear lid, always make sure that it is properly
closed and locked.
• Never leave your vehicle unattended especially with the rear lid
left open. A child could crawl into the vehicle through the luggage
compartment and close the rear lid becoming trapped and unable
to get out. Being trapped in a vehicle can lead to serious personal
injury.
• Never let children play in or around the vehicle.
• Never let passengers ride in the luggage compartment . Vehicl e
occupants must alway s be properly restrained in one of the
vehicle 's seating positions.
00 Tips
• The tire pressu re mus t cor respond to the load - see the tire pres­
sure st icker on th e fuel filler doo r. •
The tire pressure must correspo nd to the load . The tire p ressure is
shown on t he tire press ure label. O n USA ve hicl es, t he tire press ure
label is located on the d river's s ide B-pillar. On Canada vehicles, the
tire press ure label is located either on the driver 's side B -pillar or
inside the fuel fille r flap . The t ire pressure labe l lists the recom­
mended co ld ti re inflation pressures for t he ve hicle at its maximum
c apacity weight and the tires that were on yo ur vehicle at the ti me it
was manufactured. For recommended tire pressures for normal load
c ondi tions, p le ase see cha pte r=>
page 249. •
Tie-downs
The lugg ag e co mportment is equipped with four tie­
downs to secure lugga ge and other items.
Use the t ie-downs to sec ure your ca rgo prope rly=> page 131,
"Loading the luggage compartment" .
In a co lli sion, t he laws of phys ics mean tha t even sma ller i tems th at
are loose in the vehicle will become heavy m issi les t hat can cause
ser ious injury. Items in the vehicle pos sess energy whi ch v ary wi th
vehicle speed and t he weight of the item. Vehicle speed is the most
significant factor .
For exampl e, in a fron tal col lis io n at a speed of 30 mp h (4 8 k m/h),
the forces actin g on a 10 -lb (4.S kg) o bject are about 20 times t he
normal weight o f the item. This means that the weig ht of the item
wou ld suddenly be abo ut 200 lbs. (90 kg) . You can imagine the inju­
r ies tha t a 200 lbs. (90 kg) i tem flying freely thro ugh t he p assenge r
compartment could cause in a collision like this.
& WARNING
Weak , damaged or improper straps used to secure items to t ie­
downs can fail during hard braking or in a collision and cause
ser ious personal injury.

Intelligent technologyL ______________________________________ _
the drive wheels on one axle is detected (e.g . on slippery ground on
one side),
the spinning wheel is braked, thereby transferring power to
the other drive wheel or wheels (all -wheel drive) . This is done up to a
speed of about 60 mph (100 km/h). Noises from the brake system
signal that wheel sp in 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 ab le to transfer power
spms .
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 operat ional and behaves in the same way as a vehicle
without EDL .
As soon as the brake has cooled down, EDL switch es on again auto­
matically.
Electronic limited slip differential*
In vehicles w ith front wheel drive*, an electronic lim ited slip differen­
tial engages when driving on curves. The brakes are applied spec ifi­
cally to the front wheel that is on the inside of the curve. This mini­
m izes sliding on the front wheels and enables precise and neutral
driving through curves. The electronic limited slip differential does
not engage when d riving in wet conditions or snow.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL and the ele ctronic limited slip differential working,
the drive wheels can spin and reduce your ability to control your
ca r. -Risk of crash!
& WARNING (continued)
• The increased safety afforded by EDL and the electronic limited
slip differential 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 fau lt occurs in the ABS, the EDL is also not f unct ioni ng. This is
indicated by the ABS warning light=>
page 16.
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-Sl ip Regu lation System (ASR) is integrated in the electronic
stabili zation program (ESP) . When the vehicle starts up and acceler­
ates, the wheels are prevented from sp inning by adjust ing the engine
power to match the amount of grip available from the road surface.
How the system works
ASR performs automatica lly, 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.
The ASR works in conjunction with the ABS. If a malfunction shou ld
occur in the ABS, the ASR w ill also be out of action .
[I) Tips
To ensure that the ASR works properly, all four wheels must be fitted
with identical tires. Any differences in rolling radius of the tires can .,

_________________________________________ I_ n_ t_ e_ ll_,igent technology ,__E~-
cause the system to red uce eng ine power when t his is not desired .
See also =>
page 2 57 , "N ew tir es and rep lacing tires and whee ls". •
Braking
General Information
What af fect s braki ng effici ency ?
Operating condit ions and driv ing habits
Th e br akes on today's autom obil es are s till subjec t to we ar,
depend ing large ly on operating conditions and driving habits=>& .
O n veh icles t hat are ei ther driven mos tly in sto p-an d-go ci ty traff ic or
are driven ha rd, the bra ke pads s hould be checked by your author ized
Aud i dealer mo re o ften t han specif ied in the
Warranty & Mainte­
nance booklet .
Failure to have your brake pads ins pected can resu lt
in re duced brake pe rformance.
O n steep slopes, you shou ld use the brak ing effect of th e engine . This
way, yo u prevent unnecessary wea r on the brake system. If yo u must
u se your b ra kes, do n ot ho ld the bra kes down conti nuou sly. P u m p the
brakes at intervals .
N oises may occur when brakin g dependin g on s peed, braki ng fo rce
and outs ide cond itions s uch as temperatu re and hum id ity.
Moisture or road salt
If you are driving fas ter than 50 mp h (8 0 km/h) and th e w indshield
w ipers are on , the b ra ke pads w ill briefly touch t he br ake discs in
reg ula r intervals so as to improve react io n ti me when brak ing on wet
s u rfaces. Yo u, the drive r, will not not ice anything .
Under cert ain con ditions , for ex am ple , w hen driving throug h w ater or
very heavy rain, or even after was hing your veh icle, the bra king effect
c an be redu ced due to moi sture (or in fr eezin g condi tion s ice) on the
brake pads . A few cautious brake app lications sho uld dry off the
bra ke p ads or remove any ice coa ting s.
Controls and equip­
ment Safety first Vehicle operation
T
he effect iveness of the brakes can be reduced when the vehicle is
dr ive n o n a salt-c overe d road and t he brakes are not us ed. Likew ise,
you clea n off acc umulated salt coat ing from brake d iscs and pads
w ith a few cautio us app lications of the brake=>& .
Corrosion
There ma y be a te nd ency fo r dirt to b uild up o n the brak e pa ds and
co rrosion to form on the discs if the car is not dr iven regu la rly o r only
for short trip s wit h litt le u se of the bra kes.
If th e bra kes are not used freq uent ly, or if co rrosion has formed o n
th e discs, it is advisable to clean off the pads an d discs by brak ing
fi rmly a few times fro m a mode ra tely high speed =>& .
Faults in the brake system
If yo u should no tice a sudden increas e in brake pedal t ravel, then one
o f the two brake ci rcu its may have failed =>& .
Low brake fluid level
Malf u nctions can occu r in t he brake sys tem if the brake fluid level is
t oo low . T he bra ke fluid level is mo nitored e lectro nica lly .
Brake lining wear status
Brake lining wear may be checked by v isua l inspect ion of the condi­
t ion of the bra ke pa ds through the o penings in the wheel. If neces ­
sary , the whee l may be removed for th is inspect ion=>
page 27 2,
"Wheel c hange" .
& 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.
~
Vehicle care Do-it-yourself service Technical data

Intelligent technologyL _______________________________________ _
• If the power steering system is not funct ioning properly, contact
your au thori zed A ud i dea le r i mmediately. •
Applies to ve hicl es: wit h A ll Whe el D rive
Driving with your quattro®
With All Wheel Drive, all four wheels are driven.
General information
With All Wheel Drive, power is distributed to all fo ur whee ls. This
happens automatically depending on you r driving s tyle a nd the road
conditions at the time. See also =>
page 189, "Electronic differential
lo ck (E DL)".
W inter tires
W hen d riving in the winter, your vehicle with A ll Whee l Drive has an
advantage, even with reg ular t ires . In winter road cond it ions it may
be advisab le to mou nt w inte r ti res (or all-se aso n t ires) for imp roved
dr iveability and braking: these tires must be mounted on
all four
wheel s.
See also => page 261, "Win ter tires".
Snow chains
W he re snow c ha ins are mand atory on certain roads, this norm ally
also app lies to veh icles with all-wheel drive=>
page 262, "Snow
c hains".
Replacing wheels/tires
Veh icles with All Wheel Drive m ust always have t ires of the same s ize.
Also avoid tires with different tread depths. For details see page
=>
page 257, " N ew tires and replac ing ti res and wheels".
Off-Road driving?
Your Audi does not have enough ground clearance to be used as a n
off-road vehicle. It is therefore best to avoid rough tracks and uneven
te rrain as much as poss ib le. Also refe r 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 risk s.
• Although the quattro ®all -wheel drive is very effective, always
remember that braking capacity is limited by t ire traction. You
should therefore not drive at exce ssive speed s on icy or slippery
road surfaces .
• On wet road surfa ces, be careful not to drive too fast becau se
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 dr ive at speed s which are adjusted to the road
conditions -risk of crash! •
Energy management
Starting ability is optimized
Energy managemen t controls the distribution of elec ­
trical energy and thus optimizes the availability of elec­
t r ical ene rgy for s tarting the en gin e.
If a vehicle w ith a convent ional energy sys tem is not d riven fo r a long
period of time, t he battery is discha rged by idling cur rent consumers
(e .g. immob ilizer). In ce rtain c ircumstances it can result i n there
being insufficient energy availab le to start the engine .
Inte lligent ene rgy m anageme nt in yo ur vehicle h andles the dis tribu­
tion of electrical energy. Starting ability is markedly improved and
t he life of the bat tery is ex tende d.
Bas ically, energy management consis ts of
battery d iagnosis, idling
current management
and dynamic energy management . ~

Driving and environment
----------------------------------------------'
Driving and environment
The first 1,000 miles (1,500 km)
and afterwards
New engine
The engine needs to be run-in during the first 1,000 miles
(1,50 0 km) .
For the first 600 miles (1,000 kilometers):
- Do not use fu ll thrott le .
- Do not drive at engine speeds that are more than 2/3 of
the maximimum permitted RP M.
From 600 to 1,000 miles (1 ,000 to 1 ,500
kilometers):
- Speeds can
gradually be increased to the maxim um
perm iss ible road or engine s peed .
During and after break-in period
- Do not r ev the eng ine up to high speeds when it is co ld.
T h is app lies w hether th e t ransmission is in N ( Neutral) o r
1 n gear .
After the break-in period - Do not exceed maximum engine speed under any circum ­
stances.
- U pshift i nto the nex t higher gear
before reach ing t he red
area at t he end of the tachometer scale==>
page 8.
During the first few hours of driving, the engine's interna l friction is
hig her than later w hen all the moving pa rts have been broken in. How
Controls and equip­ ment Safety first Vehicle operation we
ll th is b reak-in p rocess is done depends to a cons iderab le extent on
the way the veh icle is d riven dur ing the f irst 1,000 miles (1,500 kilo­
meters).
0 Note
E x tremely high e ngine speeds are automatic ally reduced. However,
these RPM- limits we re prog rammed for an engine well ru n-in, not a
new e ng ine.
~ For the sake of the environment
Do not drive w it h un necess arily hig h eng ine speeds -up shift ing ea rly
saves f uel, reduces noise and protects the environme nt.•
New tires
If y our veh icle is run nin g on n ew tir es, dr ive parti cula rl y
carefu l for the fi rst 30 0 mil es (500 kil ometer s) af ter fit ting.
& WARNING
New tires tend to be slippery and must also be "broken -in ". Be
sure to remember this dur ing the first 300 miles (500 kilome ­
ter s) . Brake gently. Avoid following closely behind other vehicles
or other situations that might require sudden, hard braking.
u
New brake pads
Remember tha t new brak e pa ds d o no t hav e a fu ll braki ng
eff ect d uri ng the first 250 mi les (400 k ilomet ers) after they
are i nsta lled.
Vehicle care Do-it-yourself service Technical data