2015 AUDI A3 brake fluid

Safety . . . . . . . . . . . . . . . . . . . . . . . . . 12 1
Driving safety . . . . . . . . . . . . . . . . . 121
General notes . . . . . . . . . . . . . . . . . . . . 121
Proper occupant seating posit ions . . . 122
Driver and passenger side footwell . . . 126
Pedal area . . . . . . . . . . . . . . . . . . . . . . . 126
Stowing luggage . . . . . . . . . . . . . . . . . 127
R eport ing Safety Defects . . . . . . . . . . . 129
Safety belts ... .. ...... .. .. .. . .
General notes ............... .. .. .
Why safety bel ts? ........ .... .. . .
Safety belts ............. .. .. .. . . 131
13
1
13 2
134
Safety belt p re tens ioners . . . . . . . . . . 13 7
Airbag system . . . . . . . . . . . . . . . . . 140
I mpor tan t th ings to know . . . . . . . . . . 1 40
Fr ont airbags . . . . . . . . . . . . . . . . . . . . 14 4
M onitoring the Advanced Airbag
System . . . . . . . . . . . . . . . . . . . . . . . . . 152
Knee airbags . . . . . . . . . . . . . . . . . . . . . 157
Side airbags . . . . . . . . . . . . . . . . . . . . . 160
Side curta in a irbags . . . . . . . . . . . . . . . 163
Ch ild Safety . . . . . . . . . . . . . . . . . . . 166
Important things to know . . . . . . . . . . 166
C hi ld safety seats ............ .... . 172
Install ing a chi ld safety seat . . . . . . . . 177
L A TC H L ower ancho rages and tethe rs
fo r ch ild ren . . . . . . . . . . . . . . . . . . . . . . 180
A ddit io nal Informa tion 184
Driver messages . . . . . . . . . . . . . . 185
Smart Technology . . . . . . . . . . . . 185
N ot ice about da ta recorded by vehi cle
control mod ules . . . . . . . . . . . . . . . . . . 185
Electron ic stabilization control (ESC) 185
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Electromechanical steering . . . . . . . . . 189
All whee l drive (quatt ro) . . . . . . . . . . . 190
Energy management . . . . . . . . . . . . . . 190
Driving and the environment 193
The first 1,000 miles (1,500 km) and
afterwards . . . . . . . . . . . . . . . . . . . . . . 193
D riving through water on roads . . . . . 194
Cata lytic conve rter . . . . . . . . . . . . . . . . 194
Table of contents 3
P lac ing you r vehicle out of service. . . . 195
Operate yo ur vehicle economically an d
min imize poll ution. .. .. ... .... ... . 195
Trailer towing . . . . . . . . . . . . . . . . . 198
Driving with a trailer . . . . . . . . . . . . . . 198
Trai ler tow ing tips . . . . . . . . . . . . . . . . 200
Operating instructions ..... .. .
Caring and cleaning .......... .
General information ........... .. .
Car was hes .. .. .. ............... .
Cleaning and care information 201
201
201
201
202
Checking and Filling
. . . . . . . . . . 206
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . 206
Refueling . . . . . . . . . . . . . . . . . . . . . . . 207
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
E ngine o il . . . . . . . . . . . . . . . . . . . . . . . 212
c oolant system . . . . . . . . . . . . . . . . . . . 216
Br ake fluid . ... .. .. .. .. .. .... ... . 219
Battery . . . . . . . . . . . . . . . . . . . . . . . . . 220
Windshie ld washer fluid container . . . 224
Tires and wheels . . . . . . . . . . . . . . 225
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Tire pressure monitoring system 243
Do-it-yourself service . . . . . . . . . 246
What do I do now? . . . . . . . . . . . . 246
Luggage compartment lid emergency
release . . . . . . . . . . . . . . . . . . . . . . . . . 246
General information . . . . . . . . . . . . . . 246
Equ ipment . . . . . . . . . . . . . . . . . . . . . . 247
Spare ti re .... ... .. ..... ......... 247
Chang ing a wheel . . . . . . . . . . . . . . . . . 248
Fuses and bulbs . . . . . . . . . . . . . . . 255
El ectr ica l fus es . . . . . . . . . . . . . . . . . . . 255
B ulbs. . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Emergency situations . . . . . . . . . 259
Genera l . . . . . . . . . . . . . . . . . . . . . . . . . 259
Star ting by p ushing o r towing . . . . . . . 259
Star ting with jumpe r cables . . . . . . . . 259
U se o f jumpe r cables . . . . . . . . . . . . . . 260
•
•
•

18 Instruments and indicator lights
or
/:
or l
ig ht/ rain senso r*
c>page 25
Active lane assist"
c>p age 95
Transmission
c>page 111
Other indicator lights
D
y>))
~------------
Turn s ignals
c> pag e 25
USA models: Cru ise con trol sys ­
tem *
c>page 79
Canada models: Cr uise co ntrol
sys te m*
c>p age 79
Adaptive cruise cont ro l*
c> pag e 84
Adaptive c ruise cont ro l*
c>pag e 84
Adaptive c ruise cont ro l*
c> page 84
Active lane assist*
c> page 95
High beam
c> page 44
Convenie nce key
c>page 75
Electrome chanical pa rking bra ke
c>page 19
Adaptive c ruise cont ro l*
c> page 84
Active lane ass ist*
c>page 95
Aud i side assist *
c>page 100
Transm ission
c>page 111
Elect rome chanical par king b rake
<::>page 19
Rear s afe ty bel t* ,/
c::>page2 5
Rear safety bel t* ,/
c::> p ag e 2 5
BRAKE /(0) Brake system
If the indicator light turns on, t here is a ma l­
funct ion in the brake system .
• (USA models)/. (Canada models)
Please stop vehicle and check brake fluid lev ­
el!
Stop the ve hicle an d check t he b rake fluid lev­
el. See your authorized A udi d ealer or quali ­
fied repair facility, if necessary.
• (USA models). (Canada models)
Warning! Brake servo inoperative!
W he n t he bra king assist anc e ( brak e ass ist s ys­
t em) h as fa ile d, you mu st press the bra ke ped ­
al ha rder to bra ke . See your a uthorized Audi
dealer or qualif ied repair faci lity.
• (USA models)/. (Canada models)
Warning! Fault in brake system . Please con­
tact Service
If t he A BS ind icator light rJ1l;1 (U SA mod els)/
¢oJ ( C an ad a mod els), the ESP in d ic ato r lig ht
Ii) an d t he bra ke sys tem in dicator lig ht
• (US A mo dels)/ . (Can ada models) turn
o n an d th is message ap pears, the ABS, ES P
and braking distr ibutio n are not working
c::> & .
Dr ive to your au thor ized A udi dea ler or qu ali­
fi ed repa ir facility immed ia te ly to h ave the
malfunction corrected
c::> & .
• (USA models)/. (Canada models) Park ­
ing brake system fault! See owner's manual .,.

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

210 Check ing and F illin g
Only pull on the loop until you fee l resist ­
ance. You will not hear it release . Other­
w ise you could damage the emergency re­
lease mechanism .
Hood
Working in the engine compartment
Special care is required if you are working in
the engine compartment
F o r w ork in th e engine co mpartm ent such as
c h ec king an d filling fluids, there i s a ri sk of
inj ury, sca lding, a ccid ent s, and b urn s. For
t hi s re ason , fo llow all th e followin g lis te d
warn in gs a nd ge neral safe ty pr eca utions.
Th e e ngine compartment is a d ange rous
area .¢ .& .
&_ WARNING
To reduce the risk of injury, before you
check anyth ing under the hood:
- Turn the engine off.
- Set the parking brake.
- Place the selector leve r in the P position.
- Remove the ignit io n key .
- Let the engine coo l down.
- To reduce the r isk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or hea rd before ca re­
fully opening the hood.
- Keep chi ldren away from the engine com­
partment .
- Never spill flu ids on a hot engine. These
fluids (such as the freeze protection con­
tained in the coolant) can catch fi re.
- Avoid short circuits in the electrical sys­
tem, especially the battery.
- When working in the engine compart­
ment, remembe r that the radiator fan
can switch on even if the ignition is
switched off, which increases the risk of
persona l injury . -
Never open the cap on the coolant ex­
pans ion tank when the eng ine is warm.
The coolant system is under pressure.
- To protect your face, hands, and arms
from hot steam or coolant, cover the cap
with a large cloth when opening.
- Do not remove the engine cover under
any circumstances . This increases the
risk of burns .
- If tests need to be performed with the
engine runn ing , there is add itional dan­
ger due to moving components (such as
the ribbed belt, generator and radiator
fan) and from the high voltage ignit ion
system.
- Never touch the rad iator fan . The auxili­
ary electric fan is temperature controlled
and can switch on suddenly.
- Pay attention to the fo llow ing warnings
listed when wo rk on the fuel system or
on the e lectr ica l equipment is req uired.
-A lways disconnect the vehicle battery
from the vehicle electr ical system
- Do not smoke
- Never work near open flames
- Always have a wo rk ing fire exting uisher
nearby
- To avo id e lectr ica l sho ck and pe rsonal in­
jury whi le the engine is running or being
started, never touch:
- Ign it ion cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair
with the eng ine running:
- First, fully app ly the parking brake,
move selector lever to P (Park).
- Always use extreme caut io n to prevent
cl othing, jewelry, or long hair from get­
ting caught in the radiator fan, V-be lts
o r other moving parts, o r from contact­
ing hot parts. Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine.
- Minimize exposure to emission and
chemical hazards¢,& . ..,.

212 Checking and Filling
- When you close the engine hood, check it
to make sure the safety catch has proper­
ly engaged. The hood should be flush
with the surrounding vehicle body parts.
Engine compartment overview
The most important check points.
- If you notice while driv ing that the hood
is not secured properly, stop at once and
close it.
Fig. 149 Typ ica l locat ion of the reservoir, en g in e oil d ipstick, and engine o il filler opening
(D Coolant expansion tank (- L) .. .
@ Engine oi l dipstick ... .... .. . .
® Engine oil filler opening (~) .
@ Brake fluid reservo ir ((0)) .. .. .
® Battery(+) under a cover .. .. .
@ Body ground point(-)
0 Washer f luid reservoir (~) ... .
@ Fuse housing ....... .... ... .
2 17
215
215
219
221
224
255
The engine oil filler opening and the dipstick (items ® and @)
c::> fig. 149 may be located in
a different area depending on engine version .
A WARNING ,...,___ -
Before you check anything in the engine
compartment, always read and heed all
WARNINGS
c::> page 210.
Engine oil
Engine oil specifications
The engine in your Audi needs the right kind
of oil.
The eng ine in your Audi is a sophisticated
power plant that was built to exacting specifi ­
cations . This engine needs the right kind of
engine oil that meets specifications regarding
quality and v iscosity so that it can run
II>-

Brake fluid
Checking brake fluid level
Fig . 153 Engine co mpa rtment: cove r on the b rake f lu id
reservo ir
B efore you check anything in the engi ne com­
partment,
alwa ys read and heed all WARN ·
INGS r:=:,page 210 .
~ Read the brak e fluid level from the brake
fluid reservo ir
r:=;, fig . 153, r:=:, page 212,
fig. 149 .
The brake f luid leve l mus t be be­
tween the "MIN" and "MAX " ma rkings.
The location of the brake flu id reservo ir can be
seen in the engi ne compa rtment illust ra ti on
¢ page 212 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the b rake pads . Thi s is not cause for alarm.
If the brake fluid level falls
considerably be ­
low the "MIN" mark, the b rake wa rning/ind i­
cato r light . (U .S . models)/ . (Canadian
models) will come on
r:=;, page 18 . Do not con­
tinue to operate the vehicle. The comp lete
brake system should be thoroughly checked
by an authorized A udi dealer or other quali­
f ied fac ility and the ca use corrected . If the
br ake fluid level is too low, the brake warning/
indica tor light w ill illuminate. Contact an au·
thor ized Audi dealer
immediately .
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician .
Brake fluid abso rbs moist ure from the air. If
the water content in the brake fluid is too
Che cking and Fillin g 219
high, co rrosion in the brake system may resu lt
after a period of time . The boiling point of the
brake f lu id will also decrease conside rably and
decrease braking performance.
T herefore, the brake fluid must be changed
eve ry two year s. Always use new brake f luid
which conforms to Federal Motor Veh icle
Standard "FMVSS 116 DOT 4".
The brake fluid reservoi r can be difficu lt to
reach, therefore, we recomm end that you
have the brake fluid changed by your author­
i z ed
Audi dealer . Your dealer has the correct
tools, the right brake flu id and the know-how
to do this for you .
A WARNING
-
-Brake flu id is poisonous. It must be stor-
ed only in the closed or iginal containe r
out of the rea ch of children!
- Brake failure can resu lt from o ld or inap­
p rop riate brake f lu id. Observe these pre­
cautions:
- Use only brake f luid that meets SAE
spec ificat ion
J 1703 and conforms to
Federa l Motor Ve hicle Standard 116.
Always check with your authorized Audi
dealer to make sure yo u are using the
cor rect bra ke fluid. The cor rect type of
brake f luid is also i nd icated on t he
brake f lui d rese rvoir.
- The bra ke flu id must be new. Heavy us e
of the brake s can cause a vapo r lock if
the b ra ke fluid is left i n the system too
l ong . This can se riously affect the effi ­
ciency of the brakes as we ll as your
safety . This co uld resu lt i n an accident .
(D Note
Brak e fluid will dam age the pa int of your
vehicle .
@ For the sake of the environment
Because of the p rob lem of proper disposal
o f bra ke fluid as well as the spec ial too ls
r equired and the necessary exper tise, we
recommend that yo u have the brake flu id
changed by yo ur authorized Audi dea ler.

Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle . Tires are,
however, one of the most important parts of a
veh icle, particularly considering the compara­
tively small patch of rubber on each tire that
assures that a ll- important contact between
you, your vehicle and the road.
Maintaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry mo re weight than they can safely han­
d le, avoiding damage from road hazards and
r eg ularly inspect ing t ires for damage includ­
ing cuts, slashes irregu la r wear and overall
condition are the most important things that
you can do to he lp avoid sudden tire failure in­
cluding tread separation and blowouts.
Avoiding damage If you have to d rive over a curb or similar ob­
stacle, drive very slow ly and as close as possi ­
b le at a right angle to the curb.
A lways keep chemicals includ ing grease, o il ,
gasoline and brake fluid off the t ires .
I nspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedde d in the treads.
Storing tires Mark t ires when you remove them to indicate
the direction of rotation . T his ensures you to
be ab le to mount them correctly when you re­
i nstall them .
When removed, the whee ls or t ires should be
sto red in a cool, d ry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on rims, in a horizontal pos ition if
they are mounted on rims .
Tires an d wheel s 225
New tires
New ti res h ave to be broken in¢& .
The tread depth of new t ires may vary, accord­
ing to the type a nd make of t ire and the tread
pa tte rn.
H idden damage
Damage to tires and rims is ofte n not readily
visible . If you notice unusual v ib rat ion or the
vehicle pulls to one s ide, th is may ind icate
that one of the t ires has been damaged . T he
ti res m ust be chec ked immed iate ly by an au­
thorized Audi dea le r or q ua lified wor kshop .
Unidirectional tires
A un idirectional tire can be identified by ar­
rows on the sidewa ll, that po int in the direc­
tion the t ire is designed to rotate. You mus t
f ol low the specified di rection o f rotation . T his
is necessary so that these tires can develop
their optimum characteristics regarding grip, road noise, wear and hydrop laning resistance.
For more information
¢page 253.
A WARNING
New tires or t ires that are old, worn or
damaged cannot provide maximum con­
trol and braking ability .
-
-New tires tend to be slippery and must
also be b roken-in. To reduce the risk of
losing control , a collision and serious
pe rsonal injuries, drive w it h special care
for the first 350 miles (560 km).
- Driving with worn or damaged tires can
lead to loss of control, sudden tire fail­
ure, including a blowout and sudden de­
fl ation, cras hes and se riou s personal in­
juries . Have wo rn or damaged t ires re­
placed immediate ly.
- Ti res age even if they are not being used
and can fai l sudden ly, especially at hig h
spee ds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith special care and at low
speed.
•
•
•

236 Tires and wheels
unbalanced, resulting in vibrations you can
usually feel through the steering whee l.
Unbalanced wheels must be rebalanced to
avoid excessive wea r on steer ing, suspension
and tires . A wheel must a lso be rebalanced
when a new tire is installed.
Incorrect wheel alignment
I ncorrect wheel alignment can cause exces­
sive tire wear, impair ing the safety of the veh i­
cle. If tires show excess ive wear, have the
wheel alignment checked by an authorized
Audi dealer or qualified workshop.
All-wheel drive
Vehicles w ith quattro must a lways have tires
of the same size, construction and tread type.
F or details see
<=> page 190 .
A WARNING
Sudden tire failure can lead to loss of con­
trol, a crash and ser ious persona l injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica­
tors.
- Worn tires are a safety hazard, they do
not grip well on wet roads and increase
your risk of "hydroplaning" and loss of
control.
- Always keep chemicals that can cause
tire damage, such as grease, oil, gasoline
and brake fluid away from t ires.
- 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 lower
speeds.
- Never mount used tires on your vehicle if
you are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss o f vehicle control.
New tires and replacing tires and wheels
New tires and wheels have ta be broken in .
Fig. 160 Tire specificat ion codes on the s idewall of a
tire
No. Description
@ Nomina l w idth of t ire in mill imeters
® Ratio of height to width (aspect ratio)
© Radial
® Rim diameter code
® L oad index and speed rating
(J) U.S . DOT tire identification number
® Audi Origina l tire
® Sever snow conditions
@ T ire ply composition and materials
used
@ Maximum load rating
@ Treadwear, traction and temperature
grades
@ Maximum permissible inflation pres-
sure
T he tires and rims are essential parts of the
vehicle 's design . The tires and rims approved
by Audi are spec ially matched to the charac­
te ristics of the vehicle and can make a major .,..