2020 AUDI A3 battery

Applies to: vehicles with a CD drive
The following audio file properties are supported
by the CD drive:



Audio files
Supported Audio CDs (up to 80 min) with CD text (artist, album, track)*, CD-ROMs with a capaci-
media ty of up to 700 MB
File system CD file system: ISO9660, Joliet, UDF
Metadata Album cover: GIF, JPG, PNG with max. 800x800 px. The album cover from the medi-
um may be displayed, depending on availability.
Format MPEG 1/2 Windows Media Au- | MPEG 2/4 FLAC
Layer 3 dio 9 and 10
File extension |.mp3 -wma -m4a flac
-m4b
aac

Playlists -M3U; .PLS; .WPL; .M3U8; .ASX

Characteristics up to maximum 320 kbit/s and 48 kHz sampling frequencies 48 kHz sampling
frequency

Number
of files

Maximum 1,000 files per medium

@ Tips
— For compressing MP3 files, Audi recom-
mends a bit rate of at least 160 kbit/s. The
— Special characters (such as those in ID3 tag
information) may display differently or may
not always display, depending on the sys-
tem language.
display showing the remaining play time
may differ for audio files with variable bit
rate.
Troubleshooting

Problem Solution

Audi music interface/Bluetooth
audio player*: mobile device is
not supported.
Read the instructions in the chapter > page 217, Multimedia con-
nections/> page 214, Bluetooth audio player.

Audi music interface: the volume
is too high/too low when starting
playback through the AUX input.
Adjust the volume of the mobile device to approximately 70% of
the maximum output > page 222, Input level.

Audi music interface: the mobile
device is not recognized asa
source.
For many cell phones or mobile devices, playback is not possible
when the battery level is too low (less than 5% of its capacity).
The mobile device will only be recognized as a source in the MMI
after connecting if the battery charge is sufficient.

Audi music interface: malfunc-
tions during audio playback
through an iPod/iPhone.

The Bluetooth audio player function is switched on. Switch this
function off > page 233 when you are not using the Bluetooth au-
dio
player.

226

8V2012721BK
Audi smartphone interface

Operating Android Auto: to go back to the Android Auto
Applies to: vehicles with Audi smartphone interface menu bar, push the control knob down.
Opening a menu Opening a menu item
Apple CarPlay: you can go back to the Apple Car- Select and confirm a menu item using the MMI
Play main menu regardless of the selected menu control panel.
item by pressing and holding the [BACK] button.


Troubleshooting
Applies to: vehicles with Audi smartphone interface

Problem Solution

Audi smartphone
interface cannot be
opened.
Check the battery charge level on your smartphone.
Check the USB cable and use a different one if necessary.
Check if Android Auto or Apple CarPlay is available in the country where the vehi-
cle is being operated.

Android Auto: check if the Android Auto app is installed on your smartphone.

Connecting the
smartphone to the
MMI failed.
Make sure that you are using the correct USB adapter and check if the USB
adapter is connected correctly to your smartphone and the Audi music interface
=>page 217.

Apple CarPlay: check if Apple CarPlay is activated on your smartphone.

Android Auto: check in the Android Auto app if Android Auto permits new
vehicles.

The smartphone is
not automatically
detected.

Make sure that you are using the correct USB adapter and check if the USB
adapter is connected correctly to your smartphone and the Audi music interface
=> page 217.
Check if the requirements needed to connect a smartphone have been met.

229

8V2012721BK
Airbag system


entered in your Audi Warranty & Mainte-
nance booklet under AIRBAG REPLACEMENT
RECORD.
— Applies to plug-in hybrid* vehicles: In the
event of a collision where the airbags de-
ploy, the electrical connection to the high
voltage battery is automatically disconnect-
ed. This prevents a short circuit.
Other things that can affect Advanced
ONY em ace lie
Changing the vehicle's suspension system can
change the way that the Advanced Airbag System
performs in a crash. For example, using tire-rim
combinations not approved by Audi, lowering the
vehicle, changing the stiffness of the suspension,
including the springs, suspension struts, shock
absorbers etc. can change the forces that are
measured by the airbag sensors and sent to the
electronic control unit. Some suspension changes
can, for example, increase the force levels meas-
ured by the sensors and make the airbag system
deploy in crashes in which it would not deploy if
the changes had not been made. Other kinds of
changes may reduce the force levels measured by
the sensors and prevent the airbag from deploy-
ing when it should.

ZX, WARNING
Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance and in-
crease the risk of serious personal injury ina
crash.
— Never install suspension components that
do not have the same performance charac-
teristics as the components originally instal-
led on your vehicle.
— Never use tire-rim combinations that have
not been approved by Audi.


Knee airbags
Pregl) aCe ola ACLs eh)
Applies to: vehicles with knee airbags
The knee airbag system can provide supplemen-
tal protection to properly restrained front seat
occupants.

Fig. 219 Driver's knee airbag
The driver knee airbag is in the instrument panel
underneath the steering wheel > fig. 219, the
airbag for the passenger is at about the same
height in the instrument panel underneath the
glove compartment.
The knee airbag offers additional protection to
the driver's and passenger's knees and upper and
lower thigh areas and supplements the protec-
tion provided by the safety belts.
If the front airbags deploy, the knee airbags also
deploy in frontal collisions when the deployment
threshold stored in the control unit is met
=> page 263, More important things to know
about front airbags.
In addition to their normal safety function, safe-
ty belts help keep the driver or front passenger in
position in a frontal collision so that the airbags
can provide supplemental protection.
The airbag system is not a substitute for your
safety belt. Rather, it is part of the overall occu-
pant restraint system in your vehicle. Always re-
member that the airbag system can only help to
protect you if you are wearing your safety belt
and wearing it properly. This is why you should al-
ways wear your safety belt, not just because the
law requires you to do so > page 245, General
notes.
269

8V2012721BK
Checking and Filling


components. Before any work, always re-
move any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.
— Pay attention to the following warnings list-
ed when work on the fuel system or on the
electrical equipment is required.
— Do not smoke.
— Never work near open flames.
— Always have a working fire extinguisher
nearby.
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Limit your exposure to exhaust and chemi-
cals to as short a time as possible.


ZA WARNING
California Proposition 65 Warning:
— Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu-
ids contained in vehicles and certain prod-
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.

@) Note
When filling fluids, be sure not to add any flu-
ids to the wrong reservoirs. Otherwise severe
malfunctions and engine damage will occur.
@ For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids,
bring your vehicle to an authorized Audi deal-
er or authorized Audi Service Facility to be
checked.
Opening and closing the hood
The hood is released from inside the vehicle.

j | ON }
li KW
Fig. 246 Section from the driver's side footwell: release
lever

2
SI = & a

Read and follow all WARNINGS before checking
anything
in the engine compartment
=> page 304, General information.
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
Applies to: vehicles with plug-in hybrid drive:
Switch the ignition off before releasing the hood
so that the gasoline engine does not start auto-
matically.
305
>

8V2012721BK
Checking and Filling

Engine compartment overvie

The most important check points.
~ R
S| 8
> 2) ao

Fig. 248 Typical location of the reservoir, engine oil dipstick, and engine oil filler opening
Follow the safety precautions > page 304.
Coolant expansion tank (£) > page 312
Engine oil dipstick > page 308

) Engine oil filler opening (27) > page 308

(4) Sticker* for engine oil specification
=> page 307
Brake fluid reservoir (CO) > page 313

Jump start point (+) under a cover
=> page 316, > page 364
@) Applies to: vehicles with the vehicle battery
in the engine compartment: Vehicle bat-
tery (+) under the battery cover > page 316,
=> page 364
(8) Body ground point (-) > page 316,
=> page 364
Washer fluid reservoir (>) > page 317
Fuse housing > page 360

) Applies to: vehicles with jump start point (+):
The engine oil dipstick, the engine oil filling
opening, and washer fluid reservoir may be locat-
ed in different places within the engine compart-
ment, depending on the engine version.
(i) Tips
Applies to: vehicles with plug-in hybrid drive:
Note the information for the coolant expan-
sion tank in > page 312 and for the vehicle
battery (+) in > page 365.
Engine oil
If you need to add engine oil, use an oil that is
listed on the sticker. The sticker is located at the
front
of the engine compartment > page 307,
fig. 248.
If the recommended engine oil is not available, in
an emergency you may add a maximum of 1
307
>

Checking and Filling

Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.
@® Tips
Applies to: RS models: In certain weather
conditions, moisture such as rain or snow may
evaporate on the radiator after stopping the
vehicle. This may cause steam to escape from
the front of the vehicle.
Applies to: vehicles with plug-in hybrid drive


Fig. 251 Engine compartment: coolant expansion tank
Your vehicle has two coolant expansion tanks
that are separate from each other:
@) expansion tank for gasoline engine and elec-
tric motor.
@®): expansion tank for the high-voltage area.
312
The expansion tank (@) must not be opened
oA.
> Switch the ignition off.
> Open the hood > page 305.
> Always check the coolant level in both coolant
expansion tanks (@) and @) using the outer
markings.
> When you fill coolant in the expansion tank (A),
please refer to > page 311, Cooling system.
> Do not drive any farther if the coolant level in
the expansion tank (@) is low. Contact an au-
thorized Audi dealer or authorized Audi Service
Facility immediately > A\.

ZA WARNING
— Read and follow the warnings in
=> page 304, General information before
opening the hood and checking the coolant
level.
— The expansion tank (8) may only be opened
and filled by an authorized Audi dealer or
authorized Audi Service Facility.
— Coolant can enter the inside of the high-
voltage battery when filling the expansion
tank @) and cause a short circuit, which in-
creases the risk of fire.

Checking coolant

RAZ-0539


MIN

Fig. 252 Engine compartment - coolant expansion tank
(diagram): @ cover; @) markings
Observe the safety precautions > page 304, Gen-
eral information.
Checking the engine coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 305.

Checking and Filling

Message
EG / @ Brakes: stop vehicle and check brake
fluid level
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

Z\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an
accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.

© Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.
314
Electrical system
If the | or = indicator light turns on, there is a
malfunction in the generator, the battery, or the
vehicle electrical system.
z= Electrical system: malfunction! Battery is
not charging
Safely stop your vehicle, do not continue driving
and switch the ignition off > A\. See an author-
ized Audi dealer or authorized Audi Service Facili-
ty for assistance.
=} Electrical system: malfunction! Restart not
possible. Please contact Service
It will not be possible to restart the engine once
you turn it off. Vehicle functions/driving stability
may be limited. Drive to an authorized Audi deal-
er or authorized Audi Service Facility immediate-
ly.
z= Electrical system: malfunction! Please con-
tact Service
Switch off all electrical equipment that is not
needed. Vehicle functions/driving stability may
be limited. Drive to an authorized Audi dealer or
authorized Audi Service Facility immediately.
= Electrical system: low battery charge. Bat-
tery will be charged while driving
The starting ability may be impaired.
If this message turns off after a little while, the
vehicle battery has charged enough while driving.
If this message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility.

ZA\ WARNING
When there is an electrical system malfunc-
tion, vehicle functions may not work and driv-
ing stability may be limited, which increases
the risk of an accident. Do not continue driv-
ing and switch the ignition off. See an author-
ized Audi dealer or authorized Audi Service Fa-
cility for assistance.

8V2012721BK
Checking and Filling

Battery
eae mee eles)
Because of the complex power supply, all work on
batteries such as disconnecting, replacing, etc.,
should only be performed by an authorized Audi
dealer or authorized Audi Service Facility > A\.
Multiple batteries with different technologies
may be installed in your vehicle:
— Vehicle battery (for example, for starting the
engine, basic power supply) > page 315, Lead
battery or > page 316, Other battery types
— Auxiliary battery (for example, for recuperation
or optional equipment) > page 316, Other bat-
tery types
— Applies to: plug-in hybrid drive: High-voltage
battery (for example, for electric driving)
=> page 96.
Not running the vehicle for long periods of
time
The battery will gradually drain if the vehicle
does not run for long periods of time. To ensure
that the vehicle can still be started, the electrical
equipment will be reduced or switched off
=> page 82. Some convenience functions, such as
interior lighting or power seat adjustment, may
not be available under certain circumstances.
These convenience functions will be available
again once you switch the ignition on and start
the
engine.
Even when electrical equipment is switched off,
the equipment can still drain the battery if the
vehicle is not driven for long periods of time.
Deep draining results in a chemical reaction that
destroys the inside of the battery. The battery
must be charged every month to prevent this
= page 316. Contact an authorized Audi dealer or
authorized Audi Service Facility for more infor-
mation.
Winter operation
Cold weather places higher demands on the bat-
tery. This results in reduced starting ability. Have
the battery checked by an authorized Audi dealer
or authorized Audi Service Facility before cold
weather begins.

ZA WARNING
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Never connect the charging cable or jump
start cable directly to your vehicle battery.
Only use the connections in the engine com-
partment > page 316.

Z\ WARNING
California Proposition 65 Warning:
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive problems.
Wash hands after handling.


@) Note
If the vehicle will be parked for long periods
of time, protect the battery against the cold
so that it will not be destroyed by “freezing”
= page 316, Charging the battery.
Lead battery
Explanation of warnings:
© Always wear eye protection.
Battery acid is highly corrosive. Always
wear protective gloves and eye protection.
® Fire, sparks, open flame, and smoking are
@/
aa


forbidden.
A highly explosive mixture of gases can
VN form when charging batteries.

Always keep children away from battery
®) acid and the battery.

Always follow the instructions in the oper-
ating manual.


@) For the sake of the environment

¥ Lead-acid batteries must be disposed of
using methods that will not harm the
315