2020 AUDI A3 cooling

Checking and Filling

or authorized Audi Service Facility to have the
malfunction corrected.
The indicator light can also turn on if the fuel fill-
er cap is not closed correctly > page 2991).

ZA\ WARNING
Incorrect use of the connection port for the
On Board Diagnostic System can cause mal-
functions, which can then result in accidents
and serious injuries.
— Only allow an authorized Audi dealer or au-
thorized Audi Service Facility to read out the
engine data.

Engine compartment
(ee eel)
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and filling fluids, there is a risk of in-
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area. > /\.

Z\ WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the engine com-
partment.
— Never spill fluids on a hot engine. These flu-
ids (such as the anti-freezing agent con-
tained in the coolant) can ignite.
— Avoid short circuits in the electrical system.
— Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.


1) Depending on the engine and country
304


— Never open the hood when there is steam or
coolant escaping from the engine compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
Plug-in hybrid drive: the coolant expansion
tank cap is equipped with a seal that must
never be removed under any circumstances
=> page 312, fig. 251. If the coolant expan-
sion tank for the high-voltage system is not
sealed, please contact an authorized Audi
dealer or authorized Audi Service Facility.
Plug-in hybrid drive: the sealed cap must on-
ly be opened by an authorized Audi dealer or
authorized Audi Service Facility.
The cap on the coolant expansion tank must
never be opened as long as the coolant is
hot. The cooling system is under pressure.
There is a risk of burns
To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
Due to the risk of electric shock, never touch
the ignition cable or other components in
the electronic high-voltage ignition system
when the engine is running or is starting.
If a gear is engaged while the vehicle is sta-
tionary and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
If inspections or repairs must be performed
while the engine is running, moving compo-
nents (such as the ribbed belt, generator,
and radiator fan) pose an additional risk.
— Set the parking brake first and select the
“p” (Park) selector lever position.
— Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine

8V2012721BK
Checking and Filling

Observe the safety precautions > A\ in General
information on page 304.
> Park the vehicle on a level surface.
> Shut the engine off when it is warm.
> Wait approximately two minutes.
> Open the hood > page 305.
> Remove the oil dipstick > page 307, fig. 248,
wipe
it off with a clean cloth and insert it all the
way in again.
> Remove the oil dipstick again and then read the
oil level > table on page 309.
> Add engine oil if necessary > page 309.

Areas on the oil dipstick > fig. 249.

@| If the engine oil level is just before the
marking (@), then engine oil must be added.
See>O.


@|Do not add engine oil.

() Note
— The engine oil level must not be below the
marking ©, because this increases the risk
of engine damage.
— After adding engine oil, the oil level must
not be above the marking (2) > fig. 249, be-
cause this increases the risk of catalytic con-
verter and/or engine damage. If the oil level
is above the marking Q), drive to an author-
ized Audi dealer or authorized Audi Service
Facility immediately to have any engine oil
extracted. Avoid high engine speeds, full ac-
celeration, and heavy engine loads.
@ Tips
— The engine oil consumption may be up to
0.5 quart/600 miles (0.5 liter/1,000 km),
depending on driving style and operating
conditions. Consumption may be higher dur-
ing the first 3,000 miles (5,000 km). The
engine oil level must be checked regularly.
It is best to check each time you refuel your
vehicle and before long drives.
— Because of the lubrication and cooling of
the engine, combustion engines consume
oil. The oil consumption varies depending
on the engine and may change during the
service life of the engine. Engines generally
consume more oil at the beginning during
the break-in period. Then oil consumption
stabilizes after the break-in period.
— Under normal conditions, oil consumption
depends on the quality and viscosity of the
oil, the engine RPM, the climate conditions,
and the road conditions. The dilution of oil
from condensation or fuel residue as well as
the age of the oil also play a role. Because
engine wear increases with mileage, oil con-
sumption will increase again over time until
it may be necessary to replace worn compo-
nents.
— Because all these variables play a role, it is
not possible to define an oil consumption
standard. Therefore, the oil level must be
checked regularly.
— If you believe that your engine has in-
creased its oil consumption, contact an au-
thorized Audi dealer or authorized Audi
Service Facility to determine the cause.
Please note that an exact oil consumption
measurement must be done with the neces-
sary care and accuracy and may take time.
An authorized Audi dealer or authorized
Audi Service Facility is trained in accurately
measuring the oil consumption.
— You can find information on engine oil and
engine oil capacities for the USA at www.
audiusa.com/help/maintenance, or for Can-
ada at www.audi.ca/ca/web/en/
customer-area/care-and-maintenance/
audi-service-schedules.html, or call
800-822-2834.
Adding engine oil

B8K-2120


Fig. 250 Engine compartment: engine oil filler opening
cover
309

8V2012721BK
Checking and Filling


— Maintain enough distance when you are re-
moving the oil drain plug. While doing this,
keep your forearm parallel to the ground to
reduce the risk of hot oil dripping down your
arm.
— Drain the oil into a container designed for
this purpose that is large enough to hold the
full amount of oil in your engine.
— Engine oil is poisonous. Always store out of
reach of children.
— Prolonged contact of used engine oil with
the skin may cause skin damage. Always
wash oil off immediately with soap and wa-
ter to protect your skin.
@) Note
Do not mix any additives with the engine oil.
Additives may cause engine damage that is
not covered by your New Vehicle Limited War-
ranty.

() For the sake of the environment
— Before changing the engine oil, make sure
you can dispose of the used engine oil cor-
rectly.
— Engine oil must always be disposed of cor-
rectly. Do not dump it in the yard, in the for-
est, or in open water, river channels, or sew-
ers.
— Have your used engine oil recycled by bring-
ing it to a used oil collection site or contact
a gas station.
Cooling system
The engine cooling system is filled with a mixture
of purified water and coolant additive at the fac-
tory. This coolant must not be not changed.
The coolant level is monitored through the B in-
dicator light > page 311. However, occasionally
checking the coolant level manually is recom-
mended.
Messages
BB Turn off engine and check coolant level! See
owner's manual
|| Stop vehicle and check coolant level! See
owner's manual
The coolant level is too low.
Stop driving and switch the engine off. Check the
coolant level > page 311.
Plug-in hybrid drive*: refer to > page 312.
— If the coolant level is too low, add coolant
=> page 312. Only continue driving once the in-
dicator light turns off.
gg Coolant temperature too high! Please let en-
gine run while vehicle is stationary
Let the engine run at idle for a few minutes to
cool off, until the indicator light turns off.
— If the indicator light does not turn off, do not
continue driving the vehicle. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
Coolant additive
The coolant additive is made of anti-freezing and
corrosion protection agents. Only use the follow-
ing coolant additives. These additives may be
mixed with each other.




Coolant additive Specification
Gl12evo TL774L
G12++ TL774G
G13 TL774)

The amount of coolant additive that needs to be
mixed with water depends on the climate where
the vehicle will be operated. If the coolant addi-
tive percentage is too low, the coolant can freeze
and damage the engine.

Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

CG) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
311
>

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.

8V2012721BK
Checking and Filling

> Check the coolant level in the coolant expan-
sion tank > page 307, fig. 248 using the outer
markings (2) > fig. 252. The coolant level must
be between the markings (2) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
Adding coolant
Applies to: vehicles with plug-in hybrid drive:
Your vehicle has two coolant expansion tanks
that are separate from each other. The smaller of
the two expansion tanks must not be opened
= page 312. Read and follow the important safe-
ty precautions > A\ in Coolant on page 312.
Requirement: there must be a residual amount of
coolant in the expansion tank >@).
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cover.
> Remove the cover (@) © fig. 252 carefully to the
left > AX.
» Add the correct mixture ratio of coolant
> page 311 up to the upper marking @
> fig. 252.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Close the cap securely.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

— Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of
burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the engine
compartment with caution.
—When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away

from children. There is a risk of poisoning.

@) Note
Do not add coolant if the expansion tank is
empty. Air could enter the cooling system and
damage the engine. If this is the case, do not
continue driving. See an authorized Audi deal-
er or authorized Audi Service Facility for assis-
tance.
Brake fluid

BFV-0229)



Z\ WARNING
— The engine compartment in any vehicle can
be a dangerous area. Stop the engine and al-
low it to cool before working in the engine
compartment. Always follow the informa-
tion found in > page 304, General informa-
tion.


Fig. 253 Engine compartment: cap on brake fluid reservoir
Observe the safety precautions > page 304, Gen-
eral information.
Checking the brake fluid level
Read the brake fluid level on the brake fluid res-
ervoir > page 307, fig. 248. The brake fluid level
must be between the MIN and MAX markings
>A.
The brake fluid level is monitored automatically. >
313

Fuses and bulbs


No. | Equipment No. | Equipment

Clutch sensor, engine start, high-voltage
F49 3
battery, power electronics

F52 F53 Level control system control module


Rear window defogger

The power seats* are protected via circuit break-
ers that automatically switch on after a few sec-
onds after the overload has been reduced.
Fuse assignment - Engine compartment

RAZ-0794)
1 0
&
F:}
vi
6
5
4
5}


Fig. 282 Engine compartment: fuse assignment


No. | Equipment
F3 | Engine control module
FA Engine components, engine cooling, aux-
iliary heater, exhaust treatment

Engine components, fuel tank system
(diesel), CNG cut-off valve
Brake light switch
E5

Fo

Engine components, water pumps, tank
F7 ; . ee cae
system (gasoline engine), electrification

F8
F9
Heat oxygen sensor

Engine components, exhaust door, glow
time control module

F10 | Fuel control module, fuel pump

362
F13 | Transmission fluid pump

F15 |Horn

Power and control electronics, engine
components, ignition coil, options mod-
ule
F1l6

Electronic Stabilization Control (ESC), en-
F17
gine control module

Terminal 30 (voltage reference), battery
F18
es
monitoring

FIO F20
F21
Windshield wipers

Anti-theft alarm system

Automatic transmission

Terminal 50 diagnosis, engine control
F22
module

F23 | Engine start

Vacuum pump, water pump, high pres-
F31. 2
sure pump, fuel injectors

F33
F34
F35
F36
F37
Brake pressure reservoir, recuperation

Brake booster

Climate control system

Left front headlamp

Parking heater


F38 | Right front headlamp

Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for
you.
It is becoming increasingly more and more diffi-
cult to replace vehicle light bulbs since in many
cases, other parts of the car must first be re-
moved before you are able to get to the bulb.
This applies especially to the light bulbs in the
front of your car which you can only reach
through the engine compartment.
Sheet metal and bulb holders can have sharp
edges that can cause serious cuts, parts must be
correctly taken apart and then properly put back
together to help prevent breakage of parts and >

8V2012721BK

Numbers and
Symbols
2-zone deluxe automatic climate control.... 66
A
BIG 6 evens a: acavivi oo sano i aaness oan 8 oe 66
A/C cooling Mode: «6 vive seein 6s wiewe ss ven 66
Accélerator pedals sii « 2 casos x o ware a & ewes 76
also refer to Accelerator pedal........... 76
ACGOSSONIES « ssezens on cesses © weame a» oremwes o 59,376
Active lane assist
refer to Audi active lane assist.......... 128
Active rollover protection system......... 242
Retracting rollover protection.......... 243
Adaptive cruise control
refer to Audi adaptive cruise control..... 118
Adaptive dampers........... 000 eee eae 92
Adjusting the additional display........... 19
Adjusting the air distribution............. 67
Adjusting the sound.................00- 234
Adjusting the temperature..............- 66
Adjusting the vents...............-0000- 68
Ait DaGjrce « 2 roses © & eoccses 2s vasene 8m meee 2 wee 253
Airbag system. ...........2.-0000- 253,273
Advanced Airbag System components.... 260
Care ee ee 268
ChILAIE iss + ¢ exes + © eaws s © ees + © ees 280
Childirestraints:: « csssccns a o ssowias o awaene © ws 280
Components (front airbags)............ 260
Danger of fitting a child seat on the front
PASSENGEN SCA cen. os wwe sv wrwew we eRe & e 254
Disposal... ... 2. cece eee 268
Front ‘airbags: = sess» » ene : een ey eee < 258
How do the front airbags work?......... 263
How many airbags does my vehicle have? . 260
How the Advanced Airbag System compo-
nents work together.............0000- 262
Important safety instructions on the knee
airbagisystem « « cscs ss ecies se eee bs eee 271
Kneeairbagsixs « 2 sco es sews ewan 2 ¥ wes 269
Monitoring.......... 0. cece e eee 265
PASSENGER AIR BAG OFF light.......... 265
REPA@INS:: = wssus 2 waune s § nous 5 2 ER 3 a 268
Safety instructions.............-..00- 267
Side airbags ............. 0. cece ee eee 271
Warning/Indicator lights.............. 265
When must the system be inspected?.... 265
Air pressure
Tire Pressure Monitoring System indicator . 337
Airtransport.... 2.0... eee eee eee eee 97
Alarm system
refer to Anti-theft alarm system.......... 30
Alignment pin (tire change).............-. 348
Allseason tires... 0.0.2.0... cece eee eee 335
All weather lights... . 0.0.0... c cece ee eee 43
All wheel drive
refer to quattro...............--0 eee ee 93
AMI
refer to Audi music interface........... 217
Android Auto
refer to Audi smartphone interface...... 228
Anti-freeze
Windshield washer system............. 317
Anti-lock braking system. .............0-. 93
Anti-Slip Regulation. ...............00005 93
Anti-theft alarm system .............0000- 30
Apple CarPlay
refer to Audi smartphone interface...... 228
ASR
refer to Anti-Slip Regulation............. 93
Audi active lane assist................04 128
Cleaning the camera area.............. 343
MESSAGES were 5 o sees & & EER § Oo Howes 5 eee 130
Audi adaptive cruise control............. 118
Cleaning the:senson « suis ss saw a 8 wens ss 343
Distance display, distance warning....... 124
M@SSAQES cerns & 2 sews 5 o SoG Fo ew E Bo ee 124
Audi adaptive light.................00008 43
Audi connect
(fer tO CONNECEs « x ees + x ewe + RoR BE 182
Audi connect Infotainment
Services overview... 0.0.6.0 6 cece ee ee 184
Audi connect Remote & Control
refer to Vehicle control services......... 185
Audidriveselect:.:. 2. isco es mune ee eens ev oe 91
Audi e-tron compact charging system.... . 105
Audi music interface................--- 217
Audi music stream
Weferito WIE bs + secs so womwne 3 ¥ eewves 187,214
AUGIO TICS ccs 2 same yo sanwes a o arene «eR 219
381

Index

Connections
refer to Media.............0000ee 211,219
Consumer information.................. 374
Consumption
Reducing... .. eee cece eects 81
Consumption (fuel) .............0 22. 22
Contacts... eee eee 178
Additional directory...............0008 232
Importing/exporting sie sso es www a es 179
Memory capacity............. 00 eeaee 180
Storing as destination................. 196
Control buttons (operating the MMI)...... 148
Control knob with joystick function (MMI op-
GSUGI cue « 5 meee ¢ 5 AER E HAWS FOE NOOSR EG RE 151
Convenience key........... 0 cee eevee eee 26
Unlocking and locking...............005 28
Convenience opening and closing
Windows OF TOP. «svc < s cocne to axcnoue «0 ot 34
Convertible child safety seats............ 285
Convertible locking retractor
ACEIVAEING ie © secscus i 2 eoecene © > severe © anes © 290
Deactivating........... 0.0.00 -e eee eee 291
Using to secure a child safety seat....... 290
Coolant temperature display.............. 15
Cooling mode......... 6... cee eee ee eee 66
Cooling system
Adding CoOlant’s sass «i eaums ¢ x eau § ya 312
Checking coolant level................ 312
Coolant....... 2... cee eee eee eee 311
Cruise control system..............000. 115
Cup
holders. ........ 0. cece eee ee eee 59
CUPFENECONSUMPEIOM sic. wo crore wo cesses ov esmue 22:
D
Data plains serine so ema o 6 amend + 6 eae + was 187
Data PrivaGy’s » mews ¢ » asws 4 y news 3 wien os 372
Date wos ¢ x gems zx aney 7 REE SE PES GF OR 230
Date display’: + sans « = woe » 2 eaems ¢ 2 eeem x 230
Daytime running lights.................. 43
Declaration of compliance............... 377
Defrosting (windows) .................... 67
DEF (instrument cluster) .............000. 14
Demo mode
refer to Presentation mode..
Determining correct load limit

384
Digital COMPASS « asi « 2 wee v eeveren v muwe we 52
Digital Rights Management.............. 211
DimMensionStes « 2 awop a sume ¢ 2 ean ao mews 3 379
Dimming the exterior mirrors............. 48
Dimming the rearview mirror............. 48
Directory
referto Contacts cas s < news sy ewe se eee 178
Display ices s eaew ws Ree s & PORE oo BoE «ee 1/
Cle ANING iar 2 sosuiie 2 o eomnae eens a mace eo 345
Infotainment system display....... 147, 231
INStrumentclUSter » sce + some es yew ey xe 20
Multifunction steering wheel............ 17
Disposal cvs ¢ seven oo mows ss nen + wees & 374
DIStaNC® sees x » seeps © & ayer § o we 5 Fee 22
Doors
Child safety lock. ssss 2s mess + ewan » ween « 33
Door contact switch. ............0.000-. 46
Mechanically unlocking and locking....... 30
Driver information system
Changing viewS..+:- ssesss esse ee eevaes 17
Economy tips (analog instrument cluster)... 23
Efficiency program.............00ee eee 23
Energy consumers (Audi virtual cockpit)... 22
Trip computer (analog instrument cluster.. 22
Trip computer (Audi virtual cockpit) ....... 22
ViGWhers « 5 aguas y 2 eeune yo eee GE ReWE x E aes 19
Driver seating position.................. 238
Drives
referto Medias. ss cree ecnes sc es 211, 219
Drive select
refer to Audi drive select................ 91
Driversysteny's «esa oo esemws oo oeosee & o omen woe 78
Driving down hills................000000. 89
Driving Safely; : secs 2s sees es eee ce eens 237
Driving through water...............00-- 90
Driving time... 0.2... eee eee ee eee 22
Driving tips
Driving through water...............0-. 90
Efficient driving «2 wees « ows 2 vimana sare 81
Uphill and downhill.................04. 89
Driving track. . 2... eee eee 89
Drivingup hill ste: s «sews » & sowane © & aocaeave o # snare 89
Dust filter
refer to Pollutant filter................. 65
DVD drive (media drives)................ 212