2021 AUDI A5 cooling

Checking and Filling

Checking the engine oil level
The engine oil level can be checked in the MMI.
Observe the safety precautions > page 230, Gen-
eral information.
>» Park the vehicle on a level surface.
> Shut the engine off when it is warm.
> Switch only the ignition back on.
> Wait approximately two minutes.
> Applies to MMI: Select on the home screen: VE-
HICLE > Settings & Service > Oil level.
> Read the oil level in the display. Add engine oil
if the bar in the oil level indicator is just below
“min” > page 234.
@) 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. In RS models, the oil consumption may
be up to 0.8 qt/600 mi (0.8 L/1,000 km).
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.
234
— 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


B8K-2120



Fig. 168 Engine compartment: engine oil filler opening
cover
Observe the safety precautions > page 230, Gen-
eral information.

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 using the g indi-
cator light. However, occasionally checking the
coolant level is recommended.
Messages
& Turn off engine and check coolant level. See
owner's manual
236
The coolant level is too low.
Stop driving and switch the engine off. Check the
coolant level > page 237.
— If the coolant level is too low, add coolant
=> page 237. Only continue driving once the in-
dicator light turns off.
|_| 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
Audi dealer or authorized Audi Service Facility
for assistance.
|| 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 add the follow-
ing coolant additives mixed with distilled water.

Coolant additive Specification


Gl12evo TL774L

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°)
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

8W7012721BB
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 G12evo coolant additive is not availa-
ble in an emergency, do not add any other
additive. You could damage the engine. If
this happens, only use distilled water and
restore 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.
— You can continue driving if the permitted
G12evo coolant additive was not added.
However, go to an authorized Audi dealer or
authorized Audi Service Facility immediately
to have the coolant replaced to reduce the
risk of engine damage.
— 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.
Checking coolant

RAZ-0540,

MIN


Fig. 169 Engine compartment - Coolant expansion tank:
@ cover with release button; @) markings
Observe the safety precautions > page 230, Gen-
eral information.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 231.
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 232, fig. 167 using the outer
markings (2) > fig. 169. 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.
> When you add coolant to the expansion tank,
please refer to > page 236, Cooling system.
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. Audi recommends mixing
the coolant additive with distilled water.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cap.
> Push the release button @) > fig. 169 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 236 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.
237

Checking and Filling

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.

ZA WARNING
— The engine compartment in any vehicle is a
potentially dangerous area. Stop the engine,
switch the ignition off, and allow the engine
to cool before working in the engine com-
partment. Always follow the information
found in > page 230, General information.
— 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 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.
238
Brake fluid

BFV-0229]


Fig. 170 Engine compartment: cap on brake fluid reservoir
Observe the safety precautions > page 230, Gen-
eral information.
Checking the brake fluid level
The brake fluid reservoir is located under a cover
on the driver’s side.
> Lift the cover > page 232, fig. 167 at both
openings and remove it.
>» Read the brake fluid level on the brake fluid res-
ervoir > page 232, fig. 167. The brake fluid lev-
el must be between the MIN and MAX markings
oA.
The brake fluid level is monitored automatically.
Messages
EG i @ 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.

ZA 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

Fuses and bulbs

@) Note
If a new fuse burns out again shortly after you
have installed it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili-
ty.
G@) Tips
— The following table does not list fuse loca-
tions that are not used.
— Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.

Fig. 193 Driver's footwell (left-hand drive vehicle): fuse
panel with plastic clip
286
3 2
= & a

a
Ss $
2 8

Fig. 194 Front passenger's footwell (right-hand drive vehi-
cle): fuse panel with plastic clip

Fuse panel


No. | Equipment

Catalytic converter heating

2 |Engine components

Exhaust doors, fuel injectors, radiator in-
let, crankcase housing heating

Vacuum pump, hot water pump, NOx sen-
4 |sor, particulate sensor, biodiesel sensor,
exhaust doors

Brake light sensor

6 | Engine valves, camshaft adjustment

Heated oxygen sensors, mass airflow sen-
sor, water pump

Water pump, high pressure pump, high
8 | pressure regulator valve, temperature
valve, engine mount

Hot water pump, motor relay, 48 V drive-
train generator, 48 V water pump

10 | Oil pressure sensor, oil temperature sensor

Clutch position sensor, 48 V drivetrain
11 | generator, water pump, 12 V drivetrain
generator

12 | Engine valves, engine mount


13 | Engine cooling

8W7012721BB
Fuses and bulbs








































Fuse panel (4) (brown) Fuse panel © (black)
14 | Fuel injectors, engine control module 1 Left rear door control module, left rear
15 |Ignition coils, heated oxygen sensors power window
16 | Fuel pump 12 | Parking heater
Fuse panel @) (red) Fuse panel (0) (black)
No. | Equipment No. | Equipment
Anti-theft alarm system Front seat electronics, seat ventilation,
2. [Engine control module rearview mirror, rear climate ‘control sys-
1 |tem control panel, neck heating, front pas-
3 Left front seat electronics, lumbar sup- senger's airbag warning light, diagnostic
port, massaging seat connection
4_|Automatic transmission selector lever Diagnostic interface, vehicle electrical sys-
5 |Horn 2 tem control module
6 |Parking brake 3 /Sound generator
7 | Diagnostic interface 4 |Clutch position sensor
8 | Roof electronics control module 5 |Engine start, emergency shut-off
9 | Emergency call module 6 Diagnostic connection, traffic information
10 | Airbag control module antenna (TMC)
1 Electronic Stabilization Control (ESC), An- 7 |USB input
ti-Lock Braking System (ABS) 8 | Garage door opener
12 | Diagnostic connection, light/rain sensor 7 Audi adaptive cruise control, distance reg-
13 | Climate control system ulation
14 | Right front door control module 11 | Front camera
15 | Climate control system compressor 12 | Right headlight
16 Brake system pressure reservoir, left neck 13 | Left headlight
heating 14 |Transmission fluid cooling
Fuse panel © (black) Fuse panel © (red)
No. | Equipment No. | Equipment
1 |Front seat heating 1 | Ignition coils
2 |Windshield wipers 2 |Climate control system compressor
3 | Left headlight electronics 5 | Left headlight
4 | Panoramic glass roof 6 |Automatic transmission
5 |Left front door control module 7 | Instrument panel
6 | Sockets 8 | Climate control system blower
7 Right rear door control module, right rear 9 |Right headlight
power window 10 | Dynamic steering
All wheel drive control module 11 | Engine start
9 | Right headlight electronics
10 Windshield washer system/headlight
washer system control module

287

8W7012721BB
Index

Numbers and
Symbols
3-zone deluxe automatic climate control.... 99
A
AIC cooling MOde:. « « vesiare «sas © wrens 6 avers 99
A/C system refrigerant oil............005 300
Acceleration measurement.............. 134
Accelerator pedal....... 0... cece eee eee ee 107
also refer to Accelerator pedal.......... 107
AGCOSSONICS © iiss 2s weer «wai + wave «6 o5a08 296
Active lane assist
refer to Audi active lane assist.......... 150
Adaptive cruise control................. 139
Adaptive dampers............000 ee eee 119
Adjusting air distribution (automatic climate
control system) ............-. ce eee eee 100
Adjusting the brightness................. 63
Adjusting the sound.................00- 221
Adjusting the temperature (automatic climate
control system) ........ cee eee eee 100
Adjusting the volume..............2.-005 30
Adjusting the volume (announcements).... 221
Adjusting the welcome sound............ 221
Aitbag’syStem « « sams s seen + wees os reese es 79
Alarm system
refer to Anti-theft alarm system.......... 37
Alignment pin (changing the wheel)....... 274
All-weather lights...............-..20--- 58
Allseason tires..........2.220202200005 260
All wheel drive
refer tOQUAtEOmms: 5 = yews « w eam eo ewe 120
Amazon Alexa integration
Media playback’. « oii. eons 6 6 cris 6 0 ow 211
Operating...............0..0 000.0000. 28
AMI
refer to Audi music interface........... 211
Android Auto
refer to Audi smartphone interface...... 219
Anti-lock braking system............0005 121
Anti-Slip Regulation. ................405 121
Anti-theft alarm system ..............000. 37
Apple CarPlay
refer to Audi smartphone interface...... 219
ASR
refer to Anti-Slip Regulation........
Audi active lane assist..............
Cleaning the camera area..........
Audi adaptive cruise control
Cleaning the sensors..............
Predictive control................
Traffic jam assist..........-..00-.
Audi adaptive light.................
Audi connect
FefEr LO CONNECE ss = « awe + e wane seas
Audi drive selects: 2 : ssa as xeaas x een
Audi music interface...............
Audio files...............002--000-
Safety measures ....... 0c. ee eens
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..............
Average speed............0.- 0000
B
Bag hooks............--6- eee sees
Band
refer to Frequency band...........
301

8W7012721BB
Index

Closing
Automatic luggage compartment lid...... 42
Convenience closing..........0...e5e0% 46
HOO « sisson sa cnamee ov atteoe a como eo ae vo 2331,
Luggage compartment lid............... 42
Luggage compartment lid with foot motion . 43
Panoramic glass:r00ficc:. «sien as nani we 6 cas 47
Power top......... 00.0 e eee eee eee eee 51
SUrishiade:((60f)': = ween 5 2 same 3 2 eae & te 47
WINdOWS « wsaics 2 ssomee x 2 voscu vo sane eo voce 45
Cockpit diMMiNG « = sess « ¢ ess + ¢ wees se ews 63
Cockpit (OVErview) « « eiea ss wewa s eawwa 2 newer 6
ColOricOdGlss « « waes so sae,p < Asem 2 3 eae EB 299
Compact spare tire................0-00. 280
Compartments............ 00 cee eee eee 92
Compass inthe mirror............-00 eee 67
Compliance ..... 2.0.0... eee 297
Conferenceicalbeains << wma «0 icra vw wmncs va a 177
Configuration wizard.................04. 20
CONNEC: ss saws s + eewe so eee so eee soe 182
Datta plamsrs s onesene « s sesusm « o vaeeove « seanous w = o 186
Data Privacy..............0-00 cee aee 292
EMme@rgenieyCalll swcsc « s sews 2 9 ewe + eee o 187
Infotainment: ss savsse 6 aacsun a 0 asso a nuns 182
Infotainment services...............-. 183
Online roadside assistance............. 188
Vehicle control services.............005 184
Connected devices
Device overvieW............ 0.0. e eee 223
Connections
refer to Media..............0000- 210, 212
Consumer information.................5 294
Consumption
Reducing........... eee eee eee eee ee 110
Consumption (fuel) .................000. 17
Contacts
TMPOrtitiGwas : « wees 5 » wee sy Sees Foe 179
Updating inthe MMI...............068 79
also refer to Directory................. 176
Convenience key...........-00 eee eee 34
Convenience closing................00 46
also refer to Vehicle key..............-. 38
Convenience opening and closing
Windows or panoramic glass roof........ 46
Coolant temperature display.............. 14
Cooling system
Adding
coolant................220005 237
Checking the coolant level............. 237
COOlANE esis oe cere x wma cw aneees w w oO 236
Gornering
lights: + «seme 2 seem 2 o eee oo ee 58
Cruise control system...............005 136
CUP HOIdErS ces ¢ « seen 3 2 heen se een ce eee = 91
Current consumption ..............0.0005 17
D
Data module
Serial’number(IMED) « ssw + 2 caer 2 ¢ sous 2 179
Data plans sce « « sees x v eeeu oo are 2 e oes 186
Data PriVaty’: s cas ¢ 5 seas 7 ¢ cees ts ees ee 292
1) 17
Sting’: weow « » wees so wees go ewe oo 22.1;
Daytime running lights.................. 58
Declaration of compliance............... 297
DEF (instrument cluster)................. 12
Demo mode
refer to Presentation mode............. 200
Destination onthe map................. 193
Details... 6.0... ccc eee eee 193
Determining correct load limit........... 259
Digital compass.............0 eee ee eee ee 67
DIMENSIONS! 3 & sncwne « sanizene » a sussnne » w sesoane w 299
Dimming the exterior mirrors............. 64
Dimming the rearview mirror............. 64
Difect@ lye: s : eaves = » seeps & 2 seeps x ees cE 176
Businessicardiescia so acevo & oceans 6 sranans «4 ie 177
Settings............. 0.02.22 c eee 179
Display
ClEQNiNG’s s = aan sy same xo ewe Fy ewe £ 270
Displaying tooltips.................000. 20
Disposal......... 0... c eee eee eee 294
Distance .... 0.6... eee eee 17
Distance warning cxsces « « saves « + concen o + soar 149
Doors
Child safety lock. .... 0.0... cee eee eee eee 45
DOOF COMPACTSWITCH s z ayeay s a says 9 4 amar og 62
Mechanically unlocking and locking....... 37
Driver information system................ 13
Drives
refer to Media.............000005 210, 212
303