2015 AUDI A3 brake

112 Automatic transmission
with the eng ine runn ing (a t id le) in the P se ­
lector lever position . Then the indicator light
and the message turn off, drive to an author ­
ized A udi dealer or qualified repair facility im­
mediately to have the malfunct ion corrected.
If the indicator lig ht and the dr ive r message
do not tur n off, do not cont inue dr iv ing. See
your author ize d Audi deal er or qualified repair
fa cili ty for assis tan ce.
Di] Transmiss ion malfunction: you can con­
tinue driving
Drive to an autho rized Aud i dea le r or qualified
repair facility immediately to have the ma l­
function co rrected .
Di] Transmission malfunction: no reverse
gear (you can continue driving)
D rive to yo ur a utho rized Aud i dea ler o r quali ­
fied repair fac ility immediate ly to have the
mal function corrected.
Di] Transmi ssion malfunction: You can con­
tinue dri ving in D until engine off
Drive the ve hicle away from mov ing traff ic and
p ar k. See y our au th oriz ed A udi d ealer or qu ali­
fied repair fac ility .
Di] Transmi ssion overheating! Please adapt
driving style
Continue driving moderate ly. When t he in di­
cato r ligh t turns off, you can continue dr iving
normally .
Di] Transmission : Please press brake pedal
and select gear again
If t he tra nsmission mal functions beca use the
temperature is too h igh , a message appears
when t he transmission is coo led.
Selector lever emergency release
Applies to vehicles: with S tronic transmission
If the vehicle 's power supply fails, the selec­
tor lever can be released in an emergency.
Fig. 96 Selecto r lever: re m ov ing th e cove r
Fig. 97 Selecto r lever: using the emerge ncy re lease to
m ove o ut of the Park pos itio n
The emergency release mechanism is located
in the right a rea under the selector lever sh ift
gate. Using the emergency release ca n be
complicated. We recommend co ntacting your
au tho rize d Aud i dea le r o r qualified repa ir fa­
c ili ty for assista nce, if necessa ry.
The sc rewd rive r from t he ve hicle too l kit locat­
ed in the luggage compartmen t is needed to
fo r the emergency release ¢
page 24 7. Use
t h e f lat s ide of the reve rsible screwdriver
bl ade .
Removing the selector lever cover
.,. Set the park ing brake «el)¢&. to secure
your veh icle from rolling .
.,. Insert the flat side o f the scr ewdr ive r side­
ways in the s lot near the s hift cove r and pry
t he shi ft cove r up<=>
fig. 96 .
.,. Pull up the co rners of t he shift c over car efu l­
ly wi th yo ur hands and fold it over the s hift-
er knob
¢ fig. 97. ..,.

Selector lever emergency release
"'Press and hold the yellow release button
with the screwdriver ¢
fig. 97.
"' Press the release button in the selector lever
@ and move the lever into the N position.
"' Clip the shift cover back into the shift gate
after using the emergency release.
If the ve hicle must be pushed or towed due to
a power failure (for example, the battery is
dead), the selector lever must f irst be moved
to the N position using the emergency release
mechanism.
A WARNING
Only move the selector lever out of the P
position when the parking brake is set. If
that does not work, secure the vehicle with
the brake pedal. Otherwise, the vehicle
could start to move unintentiona lly when
the selector lever is moved out of the P po­
sition .
Automatic transmission 113
•

126 Driving saf ety
Th ere fo re, wh enever th e vehicle i s
mo ving :
-never stand up in the vehicle
- never stand on the seats
- never knee l on the seats
- never ride with the seatback reclined
- never lie down on the rear seat
- never lean up aga inst the instrument panel
- never sit on the edge of the seat
- never sit sideways
- never lean out the w indow
- never put your feet out the window
- never put your feet on the instrument panel
- never rest your feet on the seat cushion o r
back of the seat
- never ride in the footwell
- never ride in the cargo area
A WARNING
Improper seat ing positions increase the
r isk of serious personal injury and death
whenever a veh icle is being used .
- Always make sure that all vehicle occu­ pants stay in a proper seating pos it ion
and are properly restra ined whenever the
vehicle is be ing used.
Driver and passenger
side footwell
Important safety instructions
App lies to vehicles: with knee a irbags
A WARNING
Always make s ure that the knee airbag can
inflate without interference. Objects be­
tween yourse lf and the airbag can inc rease
the risk of in jury in an acc ident by interfer­
ing w ith the way the a irbag deploys or by
being pushed into you as the airbag de­
ploys.
- No persons (ch ildren) or animals should
ride in the footwell in front of the pas­
senger seat. If the airbag deploys, this
can result in se rious or fata l injuries.
- No objects of any kind should be carried in the footwe ll area in front of the driv- er's or passenger's seat
. Bulky objects
(shopping bags, for example) can ham­
per or prevent proper deployment of the
ai rbag. Small objects can be thrown
through the vehicle if the airbag deploys
and i njure you or your passenge rs .
Pedal area
Pedals
The pedals must always be free to move and
must never be interfered with by a floor mat
or any other object.
Make su re that a ll peda ls move free ly without
i nterference and that no thing preven ts them
from return ing to their or ig inal positions .
Only use f loor mats that leave the pedal a rea
free and can be secu red with floor mat fasten­
ers.
If a brake c ircu it fa ils, inc reased brake pedal
t ravel is required to bring the vehicle to a full
stop.
A WARNING
P edals that cannot move free ly can ca use
l oss of vehicle contro l and increase the risk
of serious injury.
- Never p lace any objects in the driver's
footwell. An object co uld get into the
pedal area and interfere with pedal func­
tion. In case of sudden braking or an ac­
cident, you wou ld not be able to brake or
accelerate!
-Always make sure that nothing can fall
or move into the driver's footwell.
Floor mats on the driver side
Always use floor mats that can be securely attached to the floor mat fasteners and do
not interfere with the free movement of the
pedals.
.,. Make sure that the floor mats are properly
secured and cannot move and interfere with
the pedals
¢ A . ..,_

Use only floor mats that leave the pedal area
unobstructed and that are firmly secured so
that they cannot s lip out of position. You can
obtain suitable floor mats from you r author­
ized Audi Dealer .
Fl oor mat fasteners are installed in your Audi.
Fl oor mats used in your veh icle must be at­
tached to these fasteners. Properly securing
the floo r mats will prevent them from sliding
into positions that could interfere with the
pedals or impair safe operation of your vehicle
in other ways .
_&. WARNING
Pedals that cannot move freely can result
in a loss of veh icle control and increase the
r isk of serious personal injury .
- Always make sure that floor mats are
properly secured.
- Never place or install floor mats or other
floor coverings in the veh icle that cannot
be properly secured in place to prevent
them from slipping and interfe ring w ith
t he pedals or the ability to control the
vehicle .
- Never place o r insta ll floo r mats or other
floo r coverings on top of already insta l­
led floor mats. Addi tional floor mats and
other coverings w ill reduce the size of
the pedal area and interfere with the peda ls.
- Always properly reinstall and secure floor
mats that have been taken out for clean­
ing.
- Always make sure that objects cannot
fall into the d river footwe ll wh ile the ve­
hicle is moving. Objects can become
trapped under the brake pedal and accel­
erator pedal causing a loss of veh icle
control.
Dri ving s afe ty 127
Stowing luggage
Loading the luggage compartment
All luggage and other objects must be prop­
erly stowed and secured in the luggage
com ­
partment.
Loose items in the luggage compartment can
shift sudden ly, changing vehicle handling
characteristics . Loose items can also inc rease
the risk of serious persona l injury in a sudden
vehicle maneuve r o r i n a collision.
"' Distribute the load evenly in the luggage
compartment .
"' Always place and prope rly secure heavy
items in the luggage compartment as fa r
forw ard as possible .
"' Secure l uggage using the tie-downs p rov id­
ed
~page 60.
"' Make su re that the rear seatback is securely
latched in place.
_&. WARNING
----Imp roperly stored luggage or other items
ca n fly t hrough the ve hicle causing ser ious
personal injury in the event of hard brak­
ing or an accident . To help reduce the risk
of ser ious persona l inju ry:
- Always put objects, for example, luggage
or other heavy items in the luggage com­
pa rtment.
- Always secure objects in the luggage
compa rtment using the t ie-down hoo ks
a nd suitab le st raps.
_&. WARNING
Heavy loads w ill influence the way yo ur ve­
h icl e handles. To help reduce the risk of a
loss of contro l leading to serious pe rsonal
injury :
- Always keep in mind when transporting
heavy objects, that a change in the cen­
ter of gravity can also cause changes in •
•
veh
icle handling: •
- Always distribute the load as evenly as
possible.
~

Smart Technology Notice about data
recorded by vehicle
control modules
Your veh icle is not equipped with an Event Da­
ta Recorde r (EO R), installed by some manu­
facture rs fo r the express purpose o f capturing
data for retr ieval after an accident or cras h
event . EDR's a re sometimes called "crash re ­
corders".
Some state laws res trict the retr ieval or down ­
l oadi ng of data stored by E DR's that were in ­
stalled in a veh icle for the exp ress purpose of
retrieving data after an accide nt or crash
event w ithout the owner's consent.
A lthough yo ur vehicle is no t equ ipped w it h an
EDR, it is equipped with a number of elect ron­
ic control modules fo r various vehicle systems
such as, for examp le, eng ine f unction, em is­
sion control, as well as for the airbags and
safety belt s.
These electronic contro l modules also record
veh icle -re lated data dur ing no rma l veh icle op­
erat ion for d iagnostic and repa ir purposes .
T he recording capacity of the electronic con­
trol modules is limited to data (no sound is re ­
corded) and only a small amount of data is ac­
tually recorded ove r a ve ry limited pe riod of
time and stored when a sys tem faul t or o ther
condition is se nse d by a cont rol u nit. Some o f
the data then stored may re la te to vehicle
speed, dir ect io n, bra king as we ll as restra int
system use and perfo rmance in the event of a
crash or other condit ion. Stored data can only
be read and downloaded w ith special equip­
ment.
Electronic stabilization
control (ESC)
Description
The ESC reinforces driver safety. It reduces
the r isk of slipp ing and improves driving sta ­
b ili ty . E SC detects cr itical s it u ations such as
the veh icle ove rsteer ing and understee ring or
Smart Technolog y 185
th e wheels a re sp inning . The vehicle is stabi ­
li zed by applying the brakes or red ucing en­
gine torq ue. Once the ESC is act ive ly reg ulat­
ing, the
G) i ndicato r light b links in the instru­
ment cluster.
The anti-lock braking system (ABS), brake as­ s ist system, ant i-slip regu lation (ASR), e lec­
tron ic different ia l loc k (EDU, electron ic differ ­
ential lock* (front wheel drive) and se lective
whee l to rque control* (a ll whee l drive) are in­
teg rated in the ESC. The ESC suppo rts the sta­
bilization of the vehicle th rough a change in
t h e s teer ing torq ue.
Anti-lock braking system (ABS)
ABS prevents the whee ls from locking when
braking . The vehicle ca n still be steered even
dur ing ha rd braking. App ly steady pressure to
the b rake peda l. Do not pump the p edal. A
puls ing in the bra ke peda l indicates t hat the
system is acting to st abil ize the ve hicle.
Brake assist system
The brake ass ist system can decrease braking
dis tance. It increases bra king power when the
drive r presses the bra ke peda l quickly in emer­
gency s ituations. Yo u m ust pres s and hol d the
brake pedal unt il the dangerous s it u at ion is
ove r. In vehicles with adap tive c ruise control *,
the b rake assist system is more sensitive if the
distance detected to the vehicle ahead is too
small.
Anti-slip regulation (ASR )
ASR reduces eng ine power when the drive
whee ls beg in spi nning and adapts the fo rce to
the road conditions . This makes it easier to
start, accelerate and dr ive up inclines.
Electronic differential lock (EDL)
The EDL bra kes whee ls tha t a re sp inning and
trans fers the dr ive power to the othe r drive
whee l or w heels if the vehicle is equ ip ped with
a ll w heel d rive*) . This function is availab le up
to approximately 62 mph (100 km/h).
I n extreme cases, EDL au toma tically sw itches
off to keep t he b rake on the bra ked wheel
from overheat ing. The ve hicle is still working .,..
•
•
•

186 Smart T echnol ogy
correctly. ED L will switch on again automati ­
cally when conditions have returned to nor­
mal.
Electroni c inte raxle diff ere ntial lo ck */
s e le ct ive w heel t orqu e cont rol *
The electronic interaxle differential lock (front
wheel drive) or the selective wheel torque
contro l (all wheel drive) operates when driving
through curves. The front whee l on the inside
of the curve or both wheels o n the inside of
the curve are braked selectively as needed .
This minimizes s liding in the front wheels and
a llows for more precise driving through
curves. The app licab le system may not acti­
vate when driving in wet or snowy conditions .
Post-collision bra ke ass ist
"Post-collision brake assist" can ass ist the
driver during a collision by reducing the dan­
ge r of slipp ing and further co llision and by au­
tomatic braking.
"Post-collision brake assist" functions during
front, side and rear collis ions when the a irbag
control module a detects a trigger level and
the co llision takes place at a dr iv ing speed
faster than 6 mph (10 km/h). The braking of
the vehicle happen automatically via the ESC
as long as the ESC, the hydraulic brake sys­
tem, and the vehicle electrical system are not
damaged from the coll ision.
The fo llowing activ ities override the automat­
ic braking during a collision:
- If the dr iver presses the accelerator peda l.
T here is no a utomatic braking.
- When the force on the press brake pedal is
stronger than the b raking force initiated by
the system . The vehicle is manually braked .
- When the ESC is damaged and the "post­
collision brake assist" is not availab le.
A WARNING
- The ESC, ABS, ASR, EDL, electron ic inter­
axle d ifferential lock or select ive wheel
torque control cannot overcome the laws
of physics. This is espec ially important
on sl ippery o r wet roads.
If the systems
begin acting to stabili ze your veh icle, you
should immediately alter your speed to
match the road and traffic conditions . Do
not let the increased safety prov ided
tempt you into tak ing risks. This could
increase your risk of a collision.
- Please note the risk of a collision increas­
es when driving fast, especially through
curves and on slippery or wet roads, and
when dr iv ing too close to objects ahead .
ESC, ABS, the brake assist system, EDL,
electronic interaxle differentia l lock or
selective whee l to rque control cannot
p revent coll is ions.
- Press the acce lerator pedal carefully
when acce le rat ing o n even, slippe ry sur­
f a ces such as ice and snow. The drive
wheels can spin even when these control
systems are installed and this can affect
driving stability and increase the risk of a
col lision.
(D Tips
- ABS and ASR only function correc tly
when all four wheels are eq uipped w ith
identical tires. Different t ire sizes can
lead to a reduction in engine power.
- Yo u may hear noises when the systems
described are working .
- If the
DJ or m] (USA models) !II] (Cana ­
da mode ls) indicator light appears, there
may be a malfunction
¢ page 22.

Smart Technology 187
Switching ESC on and off
ESC turns on automatically when you start the engine .
Fig. 143 Upper center console: ESC button
bilization function of the ESC is limited or
switched off. The amount of stabilization con­
tro l will differ depending on the level.
In the following unusual situations it may
make sense to switch the ESC sport mode on
to allow the wheels to spin:
- Rocking the vehicle to free it when it is stuck
- Dr iving in deep snow or on loose gro und
The ESC is designed to function in levels. De­
pending on the leve l that is selected, the sta-
Sport mode on ESC
/ASR off
Sport mode off or
ESC /ASRon
Behavior
The actions taken by the
The actions taken by the Th
e fu ll stabilization fu nc-
ESC system to stabilize the ESC system to stab ilize the tion of the ESC and ASR is
vehicle are limited, the an- vehicle are very limited, available again.
ti-slip reg ulation (ASR) is the anti-slip regulation
sw itched off
q .&.. (ASR) is switched off q .&. .
Operation Press the If) OFF I button P ress and hold the If) OFFI Press the I.$ OFF I button
briefly. button longer than 3 sec- again.
onds.
Indicator II turns on. II and II * turn on . II turns off or II and
lights II* turn off.
Driver mes-
Stabilization control Stabilization control
Stabilization control
sages (ESC):
sport. Warning! (ESC): off. Warning! Re- (ESC): on
Restricted stability stricted stability
A WARNING
You should only sw itch the ESC off if your
driving ability and the traffic s ituation al­
low. This could increase the risk of slip­
ping.
- The stabilizing function is limited in ESC
sport mode. The driving wheels could
spin and the vehicle could swerve, espe­
cially on slick o r slipp ery road surfaces .
- T here is no vehicle stabilizat ion when
ESC/ASR are switched off.
@ Tips
-If Audi magnet ic ride is malfunctioning,
the ESC sport mode cannot be switched on or off. If ESC sport mode is activated
or ESC is switched off, it w
ill be switched
back on automatically.
- ESC sport mode cannot be switched on
or the ESC/ASR cannot be switched off
when the cru ise contro l system* or the
adaptive cru ise contro l* are actively reg­
ulat ing.
Brakes
New brake pads
New brake pads do not achieve their full brak­
ing effect during the first 400 km. They must
be "broken in" first. However, you can com­
pensate fo r the slightly reduced braking force ""

188 Smart Technology
by pressing firmly on the brake pedal. Avoid
heavy braking during the break-in period.
Wear Brake pad
wear is largely dependent on the
way the vehicle is driven and on operating
conditions. This is especially true if you are
driving frequently in the city and on curves or
with a sporty driving style.
Operating noise
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity.
Effect of water and road salt
In certain situations, for example after driving
through water, in heavy rain, after overnight
condensation or after washing your car, the
braking effect can be reduced by moisture or
ice on the brake rotors and brake pads. The
brakes must be "dried" first with a few careful
brake applications.
At higher speeds and with the windshield wip­
ers turned on, the brake pads press against
the brake rotors for a short amount of time.
This action which is not felt by the driver hap­
pens at regular intervals and facilitates a bet­
ter reaction time for the brakes in wet weath­
er.
The braking effect can also be reduced if you
are driving on salted roads and you do not ap­ ply the brakes for long periods of time. The
layer of salt on the brake rotors and pads
must be worn off first when the brakes are ap­
plied.
Corrosion
Leaving the vehicle parked for long periods of
time, low mileage and avoiding heavy braking
can contribute to corrosion on the brake ro ­
tors and dirty brake pads.
If you usually avoid heavy braking or if there is
corrosion present, occasional heavy braking at
high speeds is recommended to clean the
brake rotors and pads
Q &. .
Brake system malfunction
if you notice that the brake pedal travel has
suddenly gotten larger, then a brake circuit
may have failed. Drive to your authorized Audi
dealer or qualified repair facility immediately
to have the problem corrected. On the way
there, drive with reduced speed and keep in
mind that a long braking distance and in­
creased pressure on the brake pedal will be
necessary.
Low brake fluid level
When the brake fluid level is low, malfunc­
tions in the brake system may occur. The brake fluid level is electronically monitored .
Brake booster
The brake booster amplifies the pressure you
apply to the brake pedal. It only works when
the engine is running.
A 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 transmission 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 wa­
ter, 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