2021 AUDI A6 coolant

Checking and Filling

Opening the hood
> With the door open, pull the lever <> below
the instrument panel in the direction of the ar-
row > fig. 158.
>» Raise the hood slightly > page 242.
> Press the lever > fig. 159 in the direction of the
arrow. This releases the hooks.
> Open the hood.
Closing the hood
> Push the hood down until you override the
force of the strut.
> Let the hood fall lightly into the latch. Do not
press it in. > AX.
Messages
B Warning! Hood is not locked. Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop im-
mediately and close the hood.


AN WARNING
— 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.
— For safety reasons, the hood must always be
latched securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ed.
— If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.


D_ The & symbol is not available in all countries.
244

4K0012721BE
Checking and Filling

Engine compa ta CaN]

The most important check points.



Fig. 160 Typical location of the reservoir and the engine oil filler opening (example)
Observe the safety precautions > page 242, Gen- Eng ine oil
eral information.
If the engine oil level is too low

@ Washer fluid reservoir (>) > page 254
@® Jump start point (+) under a cover, (-) with If you need to add engine oil, use an oil that is
hex head screw > page 254, Charging the 12 listed on the sticker. The sticker is located at the
Volt vehicle battery > page 293, Jump start- _ front of the engine compartment > page 245,
ing fig. 160. When using the engine oil listed on the
@® Coolant expansion tank (£) under a cover sticker, you can adjust the oil level as often as
> page 250 needed.
@® Engine oil filler opening ("27) > page 247 If engine oil that meets the recommended speci-
© Brake fluid reservoir (O) under a cover fication is not available, in an emergency you
=> page 251 may add a maximum of 1 quart (1 liter) of
© Sticker* for engine oil specifications ACEA C3 or API SN engine oil one time until the
=> page 245 next oil change.
The coolant expansion tank and the engine oil For more information on the correct engine oil
filling opening may be located in different places for your vehicle, contact an authorized Audi deal-
within the engine compartment, depending on er or authorized Audi Service Facility. Have the oil
the engine version. changed by an authorized Audi dealer or author-
ized Service Facility. >
245

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
Wheels

Glossary of tire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto-
matic transmission, power steer-
ing, power brakes, power win-
dows, power seats, radio, and
heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent.
Numbers of 55 or lower indicate a
low sidewall for improved steer-
ing response and better overall
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim.
Bead separation
means a breakdown of the bond
between components in the bead.
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the tire pressure recom-
mended by the vehicle manufac-
turer for a tire of a designated
size that has not been driven for
more than a couple of miles (kilo-
meters) at low speeds in the three
hour period before the tire pres-
sure is measured or adjusted.
Curb weight
means the weight of a motor ve-
hicle with standard equipment in-
cluding the maximum capacity of
fuel, oil, and coolant, air condi-
tioning and additional weight of
optional equipment.
Extra load tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Extra load
tires may be identified as “XL”,
“xl”, “EXTRA LOAD”, or “RF” on
the sidewall.
259

4K0012721BE










Wheels
Model/ Tire designation Tire pressure
Engine Normal load Maximum load
(up to 3 people)»
Front Rear Front Rear
PSI kPA PSI kPA PSI kPA PSI kPA
RS 6 Avant: |275/35 ZR21 103Y 36 250 33: 230 39 270 39 270
4.0L 155 mph (250 km/h)
8-cylinder o 275/35 ZR21 103Y 42 290 39 270 45 310 45 310
174 mph (280 km/h)
275/35 ZR21 103Y 46 320 41 280 48 330 48 330
190 mph (305 km/h)
285/30 ZR22 101Y 39 270 36 250 41 280 41 280
155 mph (250 km/h)
285/30 ZR22 101Y 45 310 42 290 48 330 48 330
174 mph (280 km/h)
285/30 ZR22 101Y 49 340 44 300 49 340 49 340
190 mph (305 km/h)


Z\ WARNING
Please note the important safe-
ty precautions regarding tire
pressure => page 266 and load
limits > page 269.

@) Two people in the front, one person in the rear
>) The tire pressure depends on the maximum permitted speed for your vehicle.
and sudden deflation that can
cause the vehicle to crash.
Your safety and that of your pas-
sengers also depends on making
sure that load limits are not ex-
ceeded. Vehicle load includes ev-
Tires and vehicle load limits erybody and everything in and on
the vehicle. These load limits are
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle
that is overloaded will not handle
well and is more difficult to stop.
Overloading can not only lead to
loss of vehicle control, but can al-
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
technically referred to as the vehi-
cle’s Gross Vehicle Weight Rating
(“GVWR”).
The “GVWR” includes the weight
of the basic vehicle, all factory in-
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
plus maximum load. The maxi-
mum load includes the number of >
269

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