2021 AUDI A6 cooling

Checking and Filling

4K0012721BE
® Note 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-
If the engine oil level is too low or too high,
there is a risk of engine damage.
@ ) sary care and accuracy and may take time.
Tips An authorized Audi dealer or authorized
The oil level indicator in the display is only an Audi Service Facility is trained in accurately
informational display. If the oil level is too measuring the oil consumption.
low, a minimum oil warning appears in the in- — You can find information on engine oil and
strument cluster. Add oil and close the hood. engine oil capacities for the USA at www.
The current oil level will be displayed on the audiusa.com/help/maintenance, or for Can-
MMI the next time the ignition is switched on. ada at www.audi.ca/ca/web/en/
customer-area/care-and-maintenance/
@) Tips audi-service-schedules.html, or call
The engine oil consumption may be up to 800-822-2834.
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 1 qt/600 mi (0.8 L/1,000 km). Con-
sumption 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 Fig. 161 Engine compartment: engine oil filling opening
service life of the engine. Engines generally covet Sxem BE)
consume more oil at the beginning during
the break-in period. Then oil consumption
stabilizes after the break-in period.

RAZ-0072|


Observe the safety precautions > page 242, Gen-
eral information.
— Under normal conditions, oil consumption > Turn the engine off.
depends on the quality and viscosity of the > Open the hood > page 243.
oil, the engine RPM, the climate conditions, >» Unscrew the cap %~ for the engine oil filler
and the road conditions. The dilution of oil opening > fig. 161.
from condensation or fuel residue as well as > Carefully add 0.5 quart (0.5 liter) of the correct
the age of the oil also play a role. Because oil > page 245.
engine wear increases with mileage, oil con- > Close the engine oil filler opening cap.
sumption will increase again over time until > Close the hood = page 243.
it may be necessary to replace worn compo- > Restart the ignition after two minutes and read
nents. the current oil level in the MMI > page 246,
— Because all these variables play a role, it is Checking the engine oil level.
not possible to define an oil consumption » Applies to: using engine oil that meets the rec-
standard. Therefore, the oil level must be ommended specification: Add some more en-
checked regularly. gine oil again if necessary.
— If you believe that your engine has in-
creased its oil consumption, contact an au-
247

4K0012721BE
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 |_| indi-
cator light. However, occasionally checking the
coolant level is recommended.
Messages
HAturn 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 250.
— If the coolant level is too low, add coolant
= page 250. 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
G12evo
Specification
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 °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 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.
249

Checking and Filling

— 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.
ecking coolant

= Fe [RAZ-0540]

MIN


Fig. 162 Engine compartment - Coolant expansion tank:
@ cover with release button; @) markings
Observe the safety precautions > page 242, Gen-
eral information.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 243.
The coolant expansion tank for some engines is
located in the water drip tray under a cover. Slide
the
cover that is located below the windshield
wiper on the front passenger's side toward the
windshield and remove the cover.
> Check the coolant level in the coolant expan-
sion tank > page 245, fig. 160 using the outer
markings @) > fig. 162. The coolant level must
be between the markings @) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
>» When you add coolant to the expansion tank,
please refer to > page 249, Cooling system.
250
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. 162 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 mixed in the correct ratio
=> page 249 up to the MAX marking.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> 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.

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 242, 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.

4K0012721BE
Checking and Filling


— 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. 163 Engine compartment: cap on brake fluid reservoir
Observe the safety precautions > page 242, Gen-
eral information.
Checking the brake fluid level
> Slide the cover that is located below the wind-
shield wipers on the driver's side toward the
windshield and remove the cover.
> Read the brake fluid level on the brake fluid res-
ervoir > page 245, fig. 160. The brake fluid lev-
el must be between the MIN and MAX markings
ANG
The brake fluid level is monitored automatically.
Messages
EG 7 @ 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.


Electrical system
If the z= / B or fl indicator light turns on,
there is a malfunction in the power supply, the
battery, or the vehicle electrical system.
= / B Electrical system: malfunction! Safely
stop vehicle
251

4K0012721BE

Fuses and bulbs


This can cause damage to the electrical sys-
tem and increases the risk of fire.
() 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.
Fuse assignment - left footwell
Fuse panel @® (black)

4 |Engine components



S| Brake light sensor
6 |Engine valves
7 |Engine components
8 |Engine components
9 Engine components, 48 V water pump, 48
V drivetrain generator

10 | Oil pressure sensor, oil temperature sensor

Engine components, 48 V water pump, 48
11 |V drivetrain generator, 12 V drivetrain gen-
erator

12 | Engine valves, engine mount

13 | Engine cooling

14 | Engine control module, fuel injectors

Engine sensors, ignition coils, oxygen sen-
sors
15

RAZ-0195
ay
i
Toren
BARRIER P ala


Fig. 188 Left footwell: fuse panel with plastic clip
The fuse assignment @) and @) is in the opposite
order on right-hand drive vehicles.
16 | Fuel pump






Fuse panel (2) (red)
No. | Equipment
1 |Anti-theft alarm system
2 | Engine control module
3 | Left front lumbar support
5 |Horn
6 | Parking brake
7 | Diagnostic interface
8 |Roof electronics control module
9 | Driver assistance systems control module
10 | Airbag control module
iW Electronic Stabilization Control (ESC), An-
ti-Lock Braking System (ABS)

12 | Diagnostic connection, light/rain sensor

Climate control system, vehicle electrical
1
3 system control module

14 | Right front door control module


Fuse panel (@) (black)
No. | Equipment

Climate control system compressor, vehi-
15
cle electrical system control module


Catalytic converter heating
Auxiliary battery control module, brake
16 ;
system pressure reservoir


2 |Engine components


Engine components

299

4K0012721BE
Index

A
A/C cooling mode..........-. eee eee eee ee
A/C system refrigerant oil...............
Acceleration measurement..............
Accelerator pedal...............-00000-
also refer to Accelerator pedal..........
AccessorieS.... 0... 0.00. eee eee
Active lane assist
refer to Lane departure warning.........
refer to Lane guidance................
Adaptive cruise assist................04.
Cleaning the sensors......... 0.0.0.0 005
Adaptive cruise control
Predictive control..............000005
Adaptive dampers « sve « « savece ae scare 6 0 oe
Adaptive speed assist
refer to Adaptive cruise assist..........
Adjusting the air distribution.............
Adjusting the brightness.................
Adjusting the sound................0005
Adjusting the temperature...............
Adjusting the vents ccs <= csws + © sews +o oer
Adjusting the volume............. eee eee
Adjusting the volume (announcements) ... .
Adjusting the welcome sound............
Airbag system... 2.2... eee eee
AIPSUSPONSION ix o © aowees « 2 mines + omnes 5, v0
Alarm system
refer to Anti-theft alarm system..........
Alignment pin (changing the wheel).......
All-weather lights...............-..00005
Allseason tires’... cscu ve ones ee eee ee oe
All wheel drive
refer to quattro.............. 0...
Amazon Alexa integration
Media playback........... 00 cee e eee
QOPOratitig = = sews = « eee 5 4 wees s Ree se BES
AMI
refer to Audi music interface...........
Android Auto
refer to Audi smartphone interface......
Anti-lock braking system............000.
Anti-Slip Regulation.................05.
Anti-theft alarm system ...........-.00005
Anti-theft wheel bolts...............00.
Apple CarPlay
refer to Audi smartphone interface...... 231
Aspect ratio
NidGO verse < ¢ seven & 5 seaRE ze SeHER Fo Bee 225, 227
ASR
refer to Anti-Slip Regulation............ 117
Audi adaptive light...............-..000- 53
Audi connect
MEFEPTONCONNECE: « «esses oo wesc ow xem ¥ v0 192
AUGIGriVe’SelECt ios: « « suas > gemy 2 x seme gee 112
Audi music interface. .............0.00048 222
Audio files................-...000000 0s 223
Audi phone box....... 2... eee eee eee 183
Audi presense....... 2... 0c eee eee 150
M@SSAGES same x < eee 5 2 euS 5 2 eee Fo 154
Audi pre sense front.............-..00-- 151
Audi side assist
refer to Side assist.............00 eee ee 154
Audi smartphone interface.............. 231
Legalinformation..........0..ceeeeee 236
Audi virtual cockpit
refer to Instrument cluster.............. 12
AUTO
Automatic headlights .................. 53
Climate control system..............0-. 92
Auto Lock (central locking) ............... 35
Automatic climate control system
refer to Climate control system.......... 91.
Automatic luggage compartment lid.... 43,44
Automatic transmission............-...5- 98
Parking lock emergency release......... 101
Automatic wipe/wash system............. 60
Average consumption................... 17
Average speed... 0... . eee eee eee 17
B
Bag hooks ......... 00 eee eee eee eee 85
Band
refer to Frequency band............... 212
Battery
Charging (12 Volt vehicle battery)....... 254
Vehicle battery (12 Volt)............0.-. 252
Winter operation (12 Volt vehicle battery) . 252
Blinds
refer to Panoramic glass roof............ 48
BIGCK
OUE saws = x aeeon #2 seme x 8 eR ¢ 2 wee

4K0012721BE

Luggage compartment lid with foot motion . 44

Panoramic glass roof............00 ee eee 48
SUTSHadE (FOOT): + wars a 2 womm a 2 cows © a rey 48
WWINOWS « wscsese 2 x aessee ov areene oo come mt oon 47
Closing aid (power closing doors).......... 35
Cockpit diMMiNg : « sea « = mews se pews se ey 58
Cockpit (OVErVieW) « » uss x vmx = vem e + sex 6
Collapsible spare tire................0.. 292
Collapsible tire
refer to Collapsible spare tire........... 292
GoloreGdebn: « » swe yz ame + sem oy neve ee 313
Combustion engine................---. 103
Coming home/Leaving home
refer to Entry/exit lighting.............. 56
Gommpact Spare tire = xcus: s x wens sy gems sx ae 292
Compartments.................0 2000005 85
Compass inthe mirror............-...0-- 63
Compliance ........ 0... ce eee ee eee 311
Confernencescallicser. « o ecszace sa soeseu 0 a memos «0 187
Configuration wizard...............-.00 20
COMMO CB ais 5 x susias ww amine a 8 wend & 8 inesains «wa 192
Data plans....... 0... ee eee eee ee 196
Datta Privacy'es ss sees se eeeis s beens spews 306
Emergency Call ssvises 2 3 woe se wee s voor 197
Infotainment
Infotainment services..............005 193
Online roadside assistance............. 198
Vehicle control services... uc... eee ee 194
Connected devices
Device overvieW........-... 00 e ee eee 235
Connections
Heer tO Medias < = ssc ss eae se eae 2204223
Consumer information............-.000+ 308
Consumption
ROGUGING « esay « x eee « u oes e aeee oe eR 103
Consumption (fuel) .......... 0.00 eee eee 17
Contacts
IMPOrtingcs « «cece ss ewes sees bee 189
Updating inthe MMI...............085 189
also refer to Directory................. 186
Convenience key......... 0.00 e eee eee eee 35
Convenience closing..............-+05. 48
also refer to Vehicle key.............0.. 39
Convenience opening and closing
Windows or panoramic glass roof........ 48
Coolant temperature display.............. 14
Cooling MOd etic. i = scciin ee ecenere ee serene wv omen 92
Cooling system
Adding
coolant................-000 ee 250
Checking the coolant level............. 250
GOOlANE svc 2 x oes ov ewe eo a 2 o oe 249
Cornering lighti:. » 2 ces: = ews: o ees ee eee 53
Cross traffic assist (intersection assistant) .. 157
Cruise control system............000005 135
Cup holders. ....... 0 cece eee eee eee 84
Current consumption.............-0 eens 17
D
Data module
Serial:number (IMED) ¢ esses ss saan ss cause 189
Data plans... .... eee eee eee 196
Data Privacy...... 0... s cee cece eee 306
Date... eee eee 17
SGttiliG's s savau 3 ¥ RAH s 4 BeueS 4 E RaER ¢ Esa 2:33:
Daytime running lights................-. 53
Declaration of compliance...........0005 311
DEF (instrument cluster)...............4- 12
Demo mode
refer to Presentation mode............. 210
Destination onthe map...............4. 203
Details, . a resco « sxanene os stineoue i 6 omens mo auncems 203
Determining correct load limit........... 271,
Digital:compass sass «seas oo save oo sare 2 63
DIM@NSIONS. « s ween « seems oy noes 6 2 ew & e 3:13
Dimming the exterior mirrors............. 59
Dimming the rearview mirror............. 59
Directory........ 0.0.02... cece eee eee ee 186
BUSINESS Cat dsiies + » news oe wows ¢ pawe ws BE 187
SOEGINGS
cscs « 2 mazes & nenseee « scene © © amt « 189
Display
Cleaning...........0 0. 283
Disposal..... 0.02... ce eee eee eee eee ee 308
DistamG@ sericea & ssseie ss owes so covnine oo creme @ os 17
Distance: warning csvevs © « sce vs sseoee wo senses 148
Doors
Child safety lock...................000. 46
DOOrCONntactSWitch » + ceau sv sees gc aeam a: 57
Mechanically unlocking and locking....... 38
Power closing/closing aid............... 35
Driver information system.............--. 13
317

4K0012721BE

Vv
Valet parking............ 0... cee eee eee 49
Vanity Mirror. ... 02.2... e eee eee eee 60
Vehicle
Angle... 6. 6c eee eee eee eee 109
Care/cleaning saws =. eec5 se eee ce eae 280
DiRMeE MSI ONS ssi. + x ssi oo cevmens oo sommens 0 one 313
Identification data................04. 313
Qutof Services: + secs se ews ev oe eA eee 285
Raising « resins 2 aioe» 6 ceria © v arene © ¥ Hee 290
Starting. ..... 0.2... eee 96
TRANSPO bw + = ean se sews < e oeE x RaREE 113
Unlocking and locking................0. 40
Vehicle: caress. « sca + sean oo etc oo seen 280
Vehicle control services............00005 194
Vehicle data label...........00 sees eens 313
Vehicle identification number............ 313
Vehicle jack... 20... eee eee eee eee 286
Lifting points. ¢ esos: ¢ ¢ ewes 2 5 aes re ews 290
Tirerchange1node sisecs « 6 scene + 6 arson 3 6 exe 288
Vehicleskey', « issu > x sone #2 awus 2 0 arnams « 355.39
Vehicle start system ............-000000. 105
Vehicle toolkit’: seas « » swe =e eee ee Hey t 286
Venitilation’s = 2 ses = 2 aes ¢ z een ¢ y sows gz ne 91
VIEW button........ 0... eee eee eee 13
Voicemail... 2.0... 60. eee eee eee 187
Voice recognition system...........-.0005 28
Extéralec: « « saee 2 e eeay sv See se eeR ees 29
Operating « & sci 2 6 wes 9 6 ome + emis + wes 28
Ww
Warning lights
refer to Indicator lights..............000. 7
Washing matte finish paint.............. 280
Wave band
refer to Frequency band............... 212
Weights ........ 2... cee eee ee eee eee 314
WIHeELDOLES scsi i a sensine ov avenue ww iumsins 8 one 271
anti-theft........................00. 289
Tightening specification............... 291
WHGELS «ssn & nawes 2 2 ReoeS cE Hane sb eS 256
Cleaning « « cia se exer eo eee oo ae oo oe 282
Glossary of tire and loading terminology... 259
Loose wheel warning...............05. 272
Replacing « svascs + a saves vo ceaven ¥ even we sue 288
Tire pressure monitoring system.... 275, 276
Tires and vehicle load limits............ 269
WheelWrerichs « « siza s agen es came ¢ ¢ aan 286
Wi-Fi
HotspotsSettingSies << wie s ¢ eww s 9 eure + 195
USingsahOtSPOE « ssevsve © ccamns wo wreriee w © vrscw 193
Wild animal recognition...............- 132
Windows
Child safety lock........ 2.0.00 cece eee 46
Cleaning and removing ice............. 282
Convenience opening and closing......... 48
Defrosting.......... cee cece 93
Opening and closing................4-- 47
POWEr WINGOWS 2»: = 2 ecven 5 ¢ suey o 8 ater bes 47
Windshield
Cleaning’. « = soma oo womans wo semwens 6 2 ceoaie @ x eee 60
also refer to Windshield................ 60
Windshield washer system..........- 60, 254
Reservoir capacity............0......0. 314
Windshield wipers..............-..00005 60
Winter operation
Car washes : wey x i wees ¢ eee ce wee bee 280
Cooling system s « sisi ss ecw se aretes 6 6 ane 249
Defrosting the windows................ 93
Rear window defogger...............0- 93
Removing ice from windows............ 282
Seat heating....... 2... ee eee eee eee eee 93)
Snow chains..................0000008 273
Steering wheel heating................. 94
THOS. & swswene 1 © stranioe we o soars w/w sommes © 6 seston 272
Vehicle battery (12 Volt)............... 252
Windshield washer system............. 254
WIRED EIFES score 5 @ eases ¢ x seers ge eG Ge 272
Wireless Apple CarPlay
refer to Audi smartphone interface...... 231
Wireless charging..........-....+-.05- 184
327