2017 AUDI A3 SEDAN brake light

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-There is no vehicle stabilization when ESC/
ASR are switched off.
(D Tips
-ESC/ASR cannot be switched off or sport
mode cannot be switched on if the cruise
control system * or the adaptive cruise con­
tro l* is sw itched on.
-Malfunctions in the Audi magnetic ride *
may make it imposs ible to switch the ESC/
ASR off or to switch sport mode on.
Brakes
New brak e pad s
New brake pads do not achieve their full braking
effect during the first 2S0 mi (400 km) . They
must be "broken in" f irst. However, you can com­
pensate for the slightly reduced braking force by
pressing firmly on the brake pedal. Avoid heavy
braking during the break-in per iod.
Wear
B rake pad
wear depends largely on the way the
veh icle is driven and on operat ing cond itions.
This is especially true if you are driving frequently
in the c ity and on curves or with a sporty driving
style.
Operat ing no ise
Noises may occur when braking depending on the
speed, braking force and outs ide cond itions such
as temperature and humidity .
Effect of wat er and road salt
In certain situations, for example after driving
through water, in heavy rain, after overnight con ­
densation 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
"dr ied" first w ith a few careful brake applica­
tions .
At higher speeds and with the windsh ield wipers
turned on, the brake pads press against the brake
rotors for a short amount of time. Th is action,
which is not felt by the d river , happens at regular
Intellig ent Technology
interva ls and ensures a better reaction time for
the brakes in wet weather.
T he brak ing effect ca n also be reduced if yo u are
driv ing on sal ted roads and yo u do not app ly the
brakes for long per iods o f time. The layer o f salt
on the brake rotors and pads must be worn off
first when the brakes are applied.
Corrosion
Leav ing the veh icle pa rked for long periods of
time, low mileage and avoiding heavy b raking
can contribute to corrosion on the brake roto rs
and to dirty brake pads .
If you usua lly avoid heavy bra king or if there is
corrosion present, occasiona l heavy brak ing at
high speeds is recommended to clean the brake
rotors and
pads ¢,& .
Brake system malfunction
If you notice that the bra ke pedal travel has sud ­
denly inc re ased, then a br ake circuit in the dua l­
c ircuit b rake system may have malfunctioned.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediate ly to have the
problem corrected. On the way there, drive with
reduced speed and keep in mind that you will
need a longer distance to stop and you will need
to press the brake pedal harder.
L o w bra ke fluid le ve l
When the brake fluid level is low, malfunctions in
the brake system may occur. The brake fluid level is electronically monitored.
Brake bo oster
The brake boos ter amplifies the p ressure you ap ­
ply to the brake pedal. It on ly operates whi le the
engine is running or when the ignition is switched
on (p lug-in hybrid dr ive*) .
A WARNING
-Only app ly the brakes for the purpose of
cleaning the brake system when road and
traffic cond itions permit. You must not en­
danger other road users. This increases the
risk of an accident.
153

Intelligent Technology
- Never let the vehicle roll while the engine is
stopped beca use this increases the risk of an
acc ident.
@ Note
- Never let the brakes "rub" by pressing the
pedal light ly when bra king is not actually
necessary. This causes the brakes to over­
h eat and inc reases bra king d istance and
causes wear .
- Befo re dr iv ing on a long stretch w ith steep
s lopes, red uce your speed a nd shift to the
next lower gear This makes use of t he en­
g ine bra king effect a nd relieves the b rakes.
If you need to bra ke a dd it iona lly, bra ke in
in te rv a ls and no t conti nuou sly.
@ Tips
- If the brake booste r is no t wo rking , you
must pr ess the brake pedal wi th much more
f orc e th an norma l.
- If you re trofit you r vehicle with a front spoil­
e r, whee l cove rs o r similar ite ms, m ake sure
that the air flow to the front wheels is not
i n te rrupt ed. Ot he rw ise the bra ke sys tem
ca n become too hot.
Electromechanical
steering
The electromechanical steering supports the
driver's steering movements.
Powe r steering adapts electronically based on
the vehicle speed.
Indicator lights and messages
• Do not dr ive vehicle: steering defective
If thi s in dicator light t urns o n and stays o n and
this message appears, t he power s teer ing may
h a ve fa iled.
Stop the veh icle in a safe locat io n as soon as pos­
sib le. Do
not continue driving. See an author ized
Aud i deale r or auth o riz ed Au di Serv ice F acility fo r
assis tance.
l~ij Steering: malfunction! You can continue
driving
154 I
f the indica to r li gh t turns on, the s teering w hee l
may be more difficult to move or more sens itive
t h an usua l. The steer ing whee l may a lso be at an
angle when driving straight.
Drive slowly to an a uth o rized Audi dea ler or au ­
thorized Audi Serv ice Facility to have the mal­
funct ion corrected .
(D Tips
If t h e . or £-y.ij in dicator light on ly s tays on
fo r a short time, yo u may continue driving.
All wheel drive (quattro)
App lies to : vehicles wi th all w heel drive
In oil wheel drive, oil four wheels ore powered .
General information
In all wheel drive, the dr iv ing power is divided be­
tween all fou r whee ls . This happens autom atic al­
l y depending on yo ur driv ing beh avior as we ll as
the cur rent road conditions . Also see
c:> page 151, Electronic Stabilization Control
(ESC).
The all whee l drive concep t is designed for high
engine power. Yo ur vehicle is exce ptiona lly pow­
erfu l and has excellent driving cha racteristics
both under normal driving conditions and on
snow and ice. A lways read and follow safety pre­
cautions
c:> .&. .
Winter t ires
By using all whee l drive, your veh icle has goo d
forward motion with standard tires in winter con­
dit ions. However, using w inter or all season t ires
o n
all four wheels in the winter is recommended,
because th is w ill imp rove the
braking effect .
Snow chains
If there are s now chain laws, snow cha ins m ust
also be used on veh icles with all wheel drive
c:> page 342, Snow chains.
Replacing tires
Fo r vehicles wi th a ll w hee l drive, o nly wheels wi th
the same rol ling circ umfe rence sho uld be used .
Avoid using tires with different tread depths
c:> page 335, New tires or wheels. IJI>

Intelligent Technology
and at cold times of the year. A lot of energy is
used but little is generated. It is also critical
when the engine is not running but electrical
equipment is switched on. In this case, energy is
used but none is generated.
In situations like this, energy management will
actively regulate the distribution of energy.
Long periods without use
If you do not drive your vehicle for several days or
weeks, electrical equipment is gradually scaled
back or switched off. This reduces energy use and
ensures the vehicle will be able to start after long
periods of time. Some convenience functions
such as opening with the remote control key may not be available. These convenience functions
will be available again once you switch the igni­ tion on and start the engine.
With the engine switched off
The vehicle battery will drain if you use Infotain­
ment functions such as listening to the radio
while the engine is switched off.
If the vehicle's ability to start may be impaired by
the energy use, a message will appear in the In­
fotainment system display. The message indi­
cates that the system will switch off automatical­ ly soon . If you would like to continue using the
functions, you must start the engine.
With the engine running
Although electrical energy is generated while
driving, the vehicle battery can drain . This can
happen if little energy is generated but much is
used, and the charge level of the vehicle battery
is not optimal.
To restore the balance of energy, components that require large amounts of energy are tempo­rar ily scaled back or switched off. Heating sys ­
tems in part icular require a great deal of energy .
If you notice, for example, that the seat heating*
or rear window defogger is not working, then it
has been temporarily reduced or switched off.
These systems are available again as soon as the
energy supply has been restored .
In addition , you may notice that the idle speed
has slightly increased. That is normal and no
156
cause for concern . By increasing the idling speed,
the additional required energy will be generated
and the vehicle battery will be charged.
Notice about data
recorded by the Event
Data Recorder and
vehicle control modules
Event Data Recorder
This vehicle is equipped with an Event Data Re­
corder (EDR). The main purpose of an EDR is to
record, in certain crash or near crash-like situa­
tions, such as an airbag deployment or hitting a road obstacle, data that will assist in understand­
ing how a vehicle's systems performed . The EDR
is designed to record data related to vehicle dy­
namics and safety systems for a short period of
time, typically 30 seconds or less. The EDR in this
vehicle is designed to record such data as:
- How various systems in your vehicle were oper­
ating;
- Whether or not the driver and passenger safety
belts were buckled/fastened;
- How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
- How fast the vehicle was traveling.
These data can help provide a better understand­
ing of the circumstances in which crashes and in­
juries occur. NOTE: EDR data are recorded by your
vehicle only if a non-trivial crash situation occurs;
no data are recorded by the EDR under normal
driving conditions and no personal data (e.g .,
name, gender, age, and crash location) are re­
corded . However, other parties, such as law en­
forcement, could combine the EDR data with the
type of personally identifying data routinely ac­
quired during a crash investigation .
To read data recorded by an EDR, special equip­
ment is required, and access to the vehicle or the
EDR is needed . In addition to the vehicle manu­
facturer, other parties, such as law enforcement,
that have the special equipment, can read the in­
formation if they have access to the vehicle or the EDR.
~

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- the temperature of the engine coolant r ises due
to the heat bui ld-up from the engine in the en­
gine compartment , or
- the engine compartment heats up because the
vehicle is parked in intense su nlight .
_& WARNING
- To reduce the risk of personal injury never
touch the radiator fan .
- The auxiliary elect ric fan is temperature
contro lled and can switch on suddenly even
w hen the eng ine is not running.
- The auxiliary radiator fan switches on auto­ matically when the engine coo lant reaches a
certain temperature and will cont inue to run
until the coolant temperat ure drops.
Brake fluid
Fi g. 27 5 Engine co mpartment: cap on b rake f lu id reservoir
Observe the safety p recau tions ¢ page 316,
Working in the engine compartment .
Checking the brake fluid level
Read the brake f lu id leve l on the brake fl uid res­
e rvo ir
Q page 319 , fig. 271. The bra ke fluid level
must be be tween the M IN and MAX m ark ings
¢ _& .
The brake fluid level is mon itored a utomat ica lly .
Changing the brake fluid H ave the brake fluid changed regularly by an au­
thor ized Audi dealer or authorized Audi Service
Facility .
-
Checking and Filling
A WARNING
=
-If the brake fluid level is below the MIN
marking, it can impair the brak ing effect
and d riving safety, wh ich increase the risk of
a n accident . Do no t continue dr iving . See a n
a uthor ized Audi dealer or author ized A udi
Serv ice F acility for a ssistance.
- I f the b rake fl uid is old, b ubbles may form
i n t he bra ke sys tem dur ing heavy bra king.
This wo uld impair braking per formance an d
d riving safety, which increases the r is k of an
accident.
- T o ensu re the brake system fu nctions cor­
rectly, only use brake fluids that comp ly
with VW standard 501 14 or F M VSS -116 DOT 4.
(D Note
- If the brake flu id leve l is above the MAX
marking, bra ke f luid may leak o ut over the
edge of the reservo ir and result in damage
to the vehicle.
- Do not get any b rake fl uid on the vehicle
paint, because it wi ll corrode the paint.
Battery
General warnings about batteries
B ecause of the complex power supp ly, all work
o n batter ies such as d iscon necti ng, replac ing,
etc. should only be performed by an authori ze d
Audi dealer or au thor ized A udi Service Fac ility
Q _& .
The term "veh icle batte ry" refe rs to the 1 2 Vol t
battery in your vehicle .
P lug- in hybr id driv e*: For important informat ion
abou t the high-vol tage batte ry, refe r to
Qpage 94.
Detail ed warnings fo r the vehicle battery :
®
Wear eye protect ion.
A
Battery acid is h ighly corros ive. Wear pro-
tect ive gloves and eye protection.
@
F ir e, sparks, open flame and smoking are
forbidden .
325

Care and cleaning
A WARNING
- Only wash the vehicle when the ignition is
off and follow the instructions from the car
wash operator to reduce the risk of acci­
dents.
- To reduce the risk of cuts, protect yourself
from sharp metal components when wash­
ing the underbody or the inside of the wheel
housings.
-After washing the vehicle, the braking effect may be delayed due to mo isture on the
brake rotors or ice in the winter. This in­
creases the risk of an acc ident. The brakes
must be d ried first w ith a few careful b rake
applications.
(D Note
- If yo u wash the ve hicle in an automatic car
wash, yo u m ust fold the exte rior m irrors i n
to reduce the risk of damage to the mir rors.
Power folding exte rior mir rors* mus t onl y
b e fo lded i n and ou t using the powe r folding
funct ion .
- T o reduce t he risk of paint damage, do no t
wash the vehi cle i n dire ct sunlig ht.
-
- To red uce the risk of damage, do not wash
the power top* with a pressure washer.
- T o reduce the risk of damage to the s urface,
do not use insect removing sponges, kitchen
sponges o r similar items .
- Mat te finish painted vehicle components:
- To reduce the r isk of damage to the sur-
face, do not use polis hing agents or hard
wax.
- Never use protective wax. It can destroy
the matte finish effect .
- Do not place any stickers or magnetic
signs on vehicle parts painted with matte
finish paint. The paint could be damaged
when the stickers or magnets are re­
moved.
@ For the sake of the environment
Only wash the veh icle in facili ties spec ially de­
s igned for that pu rpose. This will reduce the
r isk of dirty wate r contam inated with o il from
ente ring the sewe r system.
Cleaning and care information
W hen clea ning and ca ring for individua l vehicle
components, refer to the fo llowing t ables. The
i n fo rmation conta ined there is s imply recom ­
mendations. Fo r quest ions or for components t
h at are not listed, cons ult an au tho rize d Aud i
de aler or au thor ized A udi Service Fac il ity. Also
f o llow the information fo und
in <=> .&. .
Ext erior cleaning
Component Situation Solution
Wind shield wiper
Deposits <=> page 58, Cleaning the wiper blades
blades
Headlights /
Deposits Soft sponge wi
th a m ild soap so lutiona)
Tail lights
Sensors /
Deposits Sensors: soft cloth with solvent-free cleaning solut ion
camera lens es Camera lenses: soft cloth w ith alcohol-free cleaning solu-
tion
Snow/ice Hand brus
h/solvent-free de -icing spray
Wheels Road salt Water
Bra ke dust Acid-free special clean
ing solution
348

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_& WARNING
You or your passengers could be injured while
changing a wheel if you do not follow these
safety precautions:
- If you have a flat tire, move a safe distance
off the road. Turn off the engine, turn the emergency flashers on and use other warn­
ing devices to alert other motorists.
- Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
- To help prevent the vehicle from moving
suddenly and possibly slipping off the jack,
always fully set the parking brake and block
the wheel diagonally opposite the wheel be­
ing changed. When one front wheel is lifted
off the ground, placing the Automatic
Transmission in P (Park) will
not prevent the
vehicle from moving.
- Before you change a wheel, be sure the
ground is level and firm. If necessary, use a
sturdy board under the jack.
- Always store the vehicle tool kit, the jack
and the replaced tire in the luggage com­
partment
c:> page 253.
Changing a wheel
When you change a wheel, follow the sequence
described below step-by-step and in exactly that
order.
1. Remove the decorative wheel cover*. For
more details see also
c:> page 357, Decora-
tive wheel covers
or c:> page 358, Wheels
with wheel bolt caps.
2. Loosen the wheel bolts c:> page 358.
3 . Locate the proper mounting point for the
jack and align the jack below that point
c:> page359.
4. Raise the car with the jack c:> page 359.
5. Remove the wheel with the flat tire and then
install
the spare c:> page 360.
6. Tighten all wheel bolts lightly.
7. Lower the vehicle with the jack .
8 . Use the wheel bolt wrench and firmly tighten
all wheel bolts
c:> page 358 .
9. Replace the decorative wheel cover* .
Emergency assistance
_& WARNING
-Always read and follow all WARNINGS and in-
formation
c:> .&. in Raising the vehicle on
page 359
and c:> page 361.
After changing a wheel
A wheel change is not complete without the do­
ing the following.
.. Always store the vehicle tool kit, the jack* and
the replaced tire in the lugg age compartment
c:> page 253.
.. Check the tire pressure on the spare wheel im­
mediately after mounting it .
.. As soon as possible, have the tightening tor­
ques
on all wheel bolts checked with a torque
wrench. The correct tightening torque is
90 ft lb (120 Nm).
.. Have the flat tire replaced as soon as possible.
@ Tips
-If you notice that the wheel bolts are cor­
roded and difficult to turn while changing a
tire, they should be replaced before you
check the tightening torque.
- Drive at reduced speed until you have the tightening torques checked.
- After changing a wheel, the tire pressure in
all four tires must be checked/corrected and
the tire pressure monitoring indicator must
be stored in the MMI
c:>page 346.
Decorative wheel covers
Applies to : vehicles wit h decorative w heel covers
The decorative wheel covers must be removed
first to access the wheel bolts.
Fig. 288 Changing a wheel: Removing the wheel cover
357

Emerg ency assis ta nce
-To help prevent injury to yourself and your
passengers:
-Do not ra ise the vehicle until you are sure
the jack is secure ly engaged.
-Passengers must not remain in the vehicle
when it is jacked up.
-Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
-Make sure jack posit ion is correct, adjust
as necessary and then cont inue to raise
the jack.
CD Note
Do not lift the vehicle by the sill. Position the
veh icle jack only at the designated lifting
points on the sill. Otherwise, your vehicle will
be damaged.
Taking the wheel off /installing the spare
Follow these instructions step-by-step for chang­
ing the wheel .
Fig . 293 Changing a wheel: using the screwdr iver hand le
(with the blade removed) to turn the bolts
Fig. 29 4 Changing a wheel: alignm ent pin ins ide the top
ho le
360
After you have loosened all wheel bolts and
raised the vehicle off the ground, remove and re­
place the wheel as follows:
Removing the wheel
.. Use the he xago nal socket in th e screwdriver
handle
to comp letely remove the topmost
wheel bo lt and set it aside on a
clean surface
<=> fig. 293.
.. Screw the threaded end of the alig nm ent pi n
from the tool kit hand-tight into the empty bolt
hole
<=> fig. 294.
.. Then remove the other wheel bolts as described
above .
.. Take off the whee l leaving the alignment p in in
the bolt hole
<=> (j) .
Putting on the c omp act spare wheel
.. Lift the spare wheel and carefully slide it over
the alignment p in to gu ide it in place
<=>(j) .
.. Use the hexagonal socket in the screwdr iver
handle to screw in and t igh ten all wheel bolts
slightly.
.. Remove the alignmen t pin and insert and t igh t­
en the remaining wheel bolt s light ly like the
rest .
.. Turn the jack hand le counter-clockwise to lower
the vehicle until the jack is fully released .
.. Use the wheel bolt wrench to tighten all wheel
bolts
firmly <=> page 358. Tighten them cross­
wise,
from one bolt to the (approximately) op ­
posite one, to keep the wheel centered.
CD Note
When removing o r insta lling the wheel, the
rim could h it the brake rotor and damage the
r otor. Wor k carefully and have a second per­
son he lp yo u.
{!) Tips
Neve r use the hexagonal socket in the handle
of th e sc rewdriver to loos en o r tigh ten the
whee l bolts.
-Pull the reve rsible blade from the screwdr iv­
er befo re you use the hexagona l socket in
the handle to turn the whee l bolts.

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Fuse assignment -interior
Fig. 301 Vehicle interior: fuse assignment
No. Equipment
Fl Ad
Blue engine components
F2 Seat adjustment
F3 Power top hyd
raulic pump
F4 Infotainment control panel, Infotainment
components
FS Gateway
F6 Selector lever (automat ic transmission)
F7 Climate/heating control, auxiliary heating,
rear window defogger relay
Electromechan ica l parking brake sw itch,
F8 light switch,
rain/light sensor, inte rior
lighting, anti-theft alarm system, diagnos -
tic connector, communication box
F9 Steering column sw itch module
Fl0 Infotainment system display
Fll Dr iver's side safety belt tens ioner
F12 Infotainment components
F13 Suspension
control control module, diag-
nostic connector
F14 Heating/air conditioning system blower
FlS Electronic steering column lock
No .
Fl6
F 17
Fl8
F 19
F20
F21
F2 3
F24
F 2S
F26
F 27
F28
F2 9
F 31
F32
F33
F34
F 3S
F36
F3 7
F38
F39
F 40
F41
F42
F43
F44
F47
F4 8
Fuses and bulbs
Equipment
Infotainment components
Instrument cluster
Rearview camera
Convenience access cont rol module
Engine components
Steering column, steering wheel heating
switch module
Right vehicle electrical system control
module
Panorama glass roof/power top control
module, power top latch
Driver's s ide front/rear power w indows
Seat heating
Sound-amplifier
Convertible top control module
Interior lights
Left vehicle electrical system control mod-
ule
Rearview camera, radar sensor control
module
A irbag
Button i llumination, interior sound, re-
versing light switch, temperature sensor,
coil for neck heating relay and socket relay
Fu nct ion lighting, headl ight range control,
a ir quality sensor, automatic dimming
rearview mirror
R ight headlight
l eft headlight
High-voltage battery
Passenger's s ide front/rear power win -
dows
Sockets Passenger's side safety belt tensioner
Cen tral locking components, windshield
washer system
Interior lights
Al l wheel drive
Rear w indow wiper
Outer sound actuator
365