2020 AUDI A4 cooling

Checking and Filling

The indicator light can also turn on if the fuel fill-
er cap is not closed correctly > page 211).
Engine compartment
General information
Special care is required if you are working in the
motor compartment
For work in the motor 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 in the vehicle. > A.


ZA 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 freeze protection contained
in the coolant) can catch fire.
— 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.
— 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.
— The cap on the coolant expansion tank must
never be opened when 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
— 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.
— Ifa 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
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.




thick cloth when opening.


ZA\ WARNING
California Proposition 65 Warning:


1) Depending on the engine and country
214

Checking and Filling

> Read the oil level in the display. Add engine oil
if the bar in the oil level indicator is just below
“min” > page 218.
@) Note
If the engine oil level is too low or too high,
there is a risk of engine damage.
@) Tips
The oil level indicator in the display is only an
informational display. If the oil level is too
low, a minimum oil warning appears in the in-
strument cluster. Add oil and close the hood.
The current oil level will be displayed on the
MMI the next time the ignition is switched on.
@) Tips
The engine oil consumption may be up to
0.5 quart/600 miles (0.5 liter/1,000 km), de-
pending on driving style and operating condi-
tions. Consumption may be higher during 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.
218
— 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

B8K-2120



Fig. 163 Engine compartment: engine oil filler opening
cover
Observe the safety precautions > A\ in General
information on page 214.
> Turn the engine off.
> Open the hood > page 215.
> Unscrew the cap 7 for the engine oil filler
opening > fig. 163.
> Carefully add 0.5 quart (0.5 liter) of the correct
oil > page 216.
> Close the engine oil filler opening cap.
> Close the hood > page 215.
> Restart the ignition after two minutes and read
the current oil level in the MMI > page 217,
Checking the engine oil level.
> Add more oil if necessary. >

Checking and Filling

@) 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 using the B indi-
cator light. However, occasionally checking the
coolant level manually is recommended.
Messages
& Turn off engine 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 221.
— If the coolant level is too low, add coolant
=> page 221. Only continue driving once the in-
dicator light turns off.
gg Coolant temperature: too high. Please let
engine 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
220
Audi dealer or authorized Audi Service Facility
for assistance.
/E| Coolant system: malfunction! Please turn
off engine
Do not continue driving, shut the engine off, and
switch the ignition off.
— 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)

@) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
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.

8W1012721BB
Checking and Filling

— 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.


RAZ-0540


MIN

Fig. 164 Engine compartment - coolant expansion tank: @
cover; (2) markings
Follow the safety precautions > page 214, Gener-
al information.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 215.
The coolant expansion tank for some engines is
located in the water drip tray under a cover. If
necessary, remove the cover that is located under
the windshield wiper on the front passenger's
side.
> Check the coolant level in the coolant expan-
sion tank > page 216, fig. 162 using the outer
markings (2) > fig. 164. 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.
>» Applies to: vehicles with 6-cylinder engine:
There is a float located in the coolant expansion
tank. Read the coolant level using the coolant
level float. When the engine is cold, the float
must be located between the MIN marking and
the edge of the filler opening on the coolant ex-
pansion tank.
Adding coolant
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 cap.
> Push the release button @) © fig. 164 on the
cap and carefully turn it to the left until you
feel resistance > /\.
> Push the release button again and remove the
cap completely.
> Add coolant in the correct mixture ratio
=> page 220 up to the MAX marking. Or, in
vehicles with a 6-cylinder gasoline engine, the
float must be located between the MIN mark-
ing and the edge of the filler opening on the
coolant expansion tank.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Vehicles with 6-cylinder engine: if necessary,
press the float into the coolant expansion tank
using the cover.
> Turn the cap to the right to tighten it until you
feel resistance a second time.
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.

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 214, General informa-
tion.
— Never open the hood if you can see or hear
steam or coolant escaping from the engine >

221

Checking and Filling


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 continue driving if the coolant expan-
sion tank is empty. Do not add any coolant,
because air could enter the cooling system
and damage the engine. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.


Brake fluid

BFV-0229)


Fig. 165 Engine compartment: cap on brake fluid reservoir
Follow the safety precautions > page 214, Gener-
al information.
Checking the brake fluid level
Read the brake fluid level on the brake fluid res-
ervoir > page 216, fig. 162. The brake fluid level
must be between the MIN and MAX markings
SA.
The brake fluid level is monitored automatically.
Message
Ga y @ Brakes: stop vehicle and check brake
fluid level
222
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.
Electrical system
If the =z or fm] indicator light turns on, there is a
malfunction in the generator, the battery, or the
vehicle electrical system.

Fuses and bulbs






































Fuse panel @) (brown) Fuse panel (0) (black)
15 |Ignition coils, heated oxygen sensors No. | Equipment
16 | Fuel pump Front seat electronics, seat ventilation,
= rearview mirror, rear climate control sys-
Fuse panel @) (red) | era controls, windshield defogger, Gate-
No. | Equipment way diagnostics
Anti-theft alarm system 2 Gateway diagnosis, vehicle electrical sys-
2 |Engine control module tem control module
3 [Left front seat electronics, lumbar sup- 3 | Sound actuator/exhaust sound tuning
port, massaging seat 4 |Clutch pedal position sensor
4 Automatic transmission selector mecha- 5 | Engine start, emergency shut-off
Sct 6 | Gateway
5 [Horn 7 |USB charging port
6 | Parking brake 8 | Garage door opener
7 | Gateway control module 5 Adaptive cruise control, distance regula-
8 | Roof electronics control module tion
9 |Emergency call system 11 |Video camera
10 | Airbag control module 12 | Right headlight
11
| Electronic Stabilization Control (ESC) 13 | Left headlight
12 | Diagnostic connector, light/rain sensor 14 | Transmission fluid cooling valve
13 | Climate control system 15 | Alarm and hands-free calling system
14 | Right front door control module Fuse panel © (red)
15 |A/C compressor ae
No. | Equipment
Fuse panel (©) (black) 1. |Ignition coils
No. | Equipment 2 |Compressor clutch, CNG system
Front seat heating 5 |Left headlight
2 |Windshield wipers 6 |Automatic transmission
Left headlight electronics 7 |Instrument panel
4 Panoramic glass roof / sliding/tilting sun- 8 | Climate control system fresh air blower
roof 9 | Right headlight
5 |Left front door control module 10 | Dynamic steering
6 | Sockets 11 | Engine start
7 Door control module, right rear window
regulator
AWD control module
Right headlight electronics
10 Windshield washer system/headlight
washer system
rT Door control module, left rear window reg-
ulator
12 | Parking heater

266

8W1012721BB
Index

Numbers and
Symbols
3-zone deluxe automatic climate control.... 88
A
ALC cooling MOde ss « « vesiev «sass w © wernin eon 88
Accelerator pedals sais se cai sv aac oe ews 96
also refer to Accelerator pedal........... 96
AGCOSSONIES «vce. «0 cesses « wesese ao nreree © 5 78,274
Active lane assist
refer to Audi active lane assist.......... 137
Adaptive cruise control................. 127
Adaptive dampers............-.0000005 106
Adjusting air distribution (automatic climate
control system) ......... 0.0.00. e eee ee 89
Adjusting the brightness................. 52
Adjusting the sound..............-...0- 206
Adjusting the temperature (automatic climate
control system) ...... 0.0 e cee eee eee 89
Adjusting the volume..............000005 26
Aitbagsystemn « «: swersve « sxaneus + cuneons wx anecome o 67
Alarm system
refer to Anti-theft alarm system.......... 33
Alignment pin (changing the wheel)....... 253
Alleweatherlightscses ws ances © sonasie » i axssane a 48
All Season tireSiens ss emans e e emie eo enews oo 242
All wheel drive
refer to quattro... . 2... eee eee ee eae 108
AMI
refer to Audi music interface........... 196
Android Auto
refer to Audi smartphone interface...... 204
Anti-freeze
Windshield washer system............. 225
Anti-lock braking system............00-5 109
Anti-Slip Regulation.................05. 109
Anti-theft alarm system..............000 33
Apple CarPlay
refer to Audi smartphone interface...... 204
Aspect ratio (video) ................ 199, 201
ASR
refer to Anti-Slip Regulation............ 109
Audi active lane assist..............0005 137
Cleaning the camera area.............. 248
Audi adaptive cruise control
Cleaning the sensors..............
Predictive control.............05.
Traffic jam assist.............00-.
Audi adaptive light.................
Audi connect
refer to connect...........eee eee
Audi connect Remote & Control
refer to Vehicle control services.....
Audi drive select...............0005
Audi music interface............00.
AudiosFileSviccs «x eon 2 wwe « o emcee 9 8 5
Safety measures..............005
Audi pre sense front..............0-
Audi side assist
refer to Side assist................
Audi smartphone interface..........
Legalinformation................
Audi virtual cockpit
refer to Instrument cluster.........
AUTO
Automatic climate control system...
Automatic headlights.............
Auto Lock (central locking) ..........
Automatic climate control system... .
Automatic luggage compartment lid....
Automatic transmission............
Automatic wipe/wash system........
Average consumption..............
AVETAGE SPEEd ss 5s aean sy ows Bee
B
Band
279

8W1012721BB

Panoramic glass roof.................-. 44
Sliding/tilting sunroof...............005 43
Sunshade (rOOf)'s + ween a 2 wome a 2 cores va eee 44
WINdOWS « wscsese 2 6 ansree 6 o areene a a mmo 2 a aos 42
Gockpit diMMiNg:: « sw ss sews oa eee se es 52
Cockpit (OVEnVieW) « » wwe ss wee seen as cee 6
Collapsible spare tire...............0... 259
Collapsible tire
refer to Collapsible spare tire........... 259
GOlGrCOdG i: = «eee + xaen x 2 Bee a tee ees 277
Compact spare tite = sews y 2 emus se seems ¢ a oe 258
Compartments..............0-.02.0000- 78
Compass inthe mirror..............00005 57
Compliance ..... 0.0... cee eee eee eee 275
Conferencercallicics « o sosvese 0 0 semi a a mace ene 164
Configuration wizard « cccc.s «ews oo emi ae € 18
CONMECUiees ow smears 2 6 eames 3 He 2 6 HeaMEW © wens 169
Data plans........... ee eee eee eee 173
Data Privacyes ss ees sy ose s pees s 3 eee 271
Emergency:calll sess 2s mesic + ewrama » wenn « 174
Infotainment....................2005 169
Infotainment services... ..0... 6.0.5 cee 170
Online roadside assistance............. 175
Vehicle control services... cc... cee es T/L,
Connected devices
Device overvieW........-... 00-2 e eee ee 207
Connections
referto Media...............0-0- 195; 197
Consumer information.................. 272
Consumption
REGUGCING = gaan s 2 aams « noun 6 = Ree 4 5 ROR 99
Consumption (fuel) ........ 2.0.0 15
Contacts
Importing and exporting.............. 166
Updating inthe MMI.................. 166
also refer to Directory...............0. 163
Convenience key........ eee cece eee eee 30
Convenience closing..............++++- 42
also refer to Vehicle key................ 34
Convenience opening and closing
Windows or panoramic glass roof........ 42
Coolant temperature display.............. 13
Cooling system
Adding
coolant..............0.-. eee 221
Checking the coolant level............. 221
Coola Ntseiess 6 2 seine so sovsias eo cere @ x como 220 Cornering
lightics « «cose x 2 secs eo eerie oo ae 48
Cruise control system. ....... 000s ee eee 123
Cup Holdersiescs + ¢ saws s ¢ ees sy eee + e eww x 78
CUFPENECONSUMPLION ais < ease az new ox care 15
D
Data module

Serial number (IMEI) « weiss ss cncane a a wares @ 165
Data plans sss x 5 cows so ween 2s awn oo wee 173
Data Privacy’: « saws = = ses < ¢ sees x 2 eee ee 271;
Date wees : x ween 5 2 nes Fn ERR EES Eee 15
SOTUNG)s ¢ aston a 2 mas a i em @ 8 em & 4 ames 206
Daytime running lamps...............05- 48
Declaration of compliance...........0005 275
DEF CINStrUrMEnt ClUStED) |: saccu s x wows 5 x eae 11
Demo mode
refer to Presentation mode............. 186
Destination onthe map................. 179
DEtailSis : = mx = come 2 2 noe § E neR st me 179
Determining correct load limit........... 241
Digital compass .......... 00. eee eee eee 57
Dimensions............0..0.00..00000- 277
Dimming the exterior mirrors............. 53:
Dimming the rearview mirror............. 53
DineGtOr yin «+ secowi oo seme + o somes % & sense oo 5 163
Business card. ............00 2.00 e eee 163
Settings.......... 0.02.00. e eee eee 165
Display
Cleanings = » sees 5 = sews s = eews te eee ee 249
Displaying tooltips...............-..00- 18
Disposal
Distance Distance
warning .............0.0 eee ee 136
Doors
Child safety lock.............02.000000- 41
Door'contactiswiten s « sasay a « saws 4 & ara 4s SL.
Mechanically unlocking and locking....... 32
Driver information system................ 12
Drives
referto Media...........-...0-.. 195, 197
Drive select
refer to Audi drive select............... 106
Drive systeM.. 1... ee eee eee eee 98
Audi drive Select’: scws « ¢ swe ¢ v e@am ov oe 106
Drive system (message)................. 100