2021 AUDI Q7 cooling

4M1012721BC
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 2421).
Engine compartment
ere MUL ety
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 in the vehicle. > A.
Explanation of warnings (sticker in the engine
compartment):

Hot engine components!
@ Rotating parts!

The radiator fan can switch on at any
[2 time!

High voltage! Switch off the engine be-
fore coming into contact with any igni-
tion system components!

The catalytic converter can be damaged
"271i the oil level is too high!
Always follow the instructions in the op-
oy erating manual.




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 freeze protection contained


— 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
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.
— 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.


in the coolant) can catch fire.


1) Depending on the engine and country
245

4M1012721BC
Checking and Filling

Fuel has entered the engine oil, either due to low
outside temperatures or frequent short drives.
Drive until the engine is warm so that the fuel in
the engine oil will evaporate. Avoid high engine
speeds, full accelerating, and heavy engine loads
when doing this.
@) Tips
The oil pressure warning 2 is not an oil level
indicator. Always check the oil level regularly.
Checking the engine oil level
The engine oil level can be checked in the MMI.
Observe the safety precautions > page 245, 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 250.
@) Note
If the engine oil level is too low or too high,
there is a risk of engine damage.
G) 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.
G) 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.
— 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.
249

4M1012721BC
Checking and Filling

Because correctly disposing of engine oil is diffi-
cult and special tools and technical knowledge
are needed for an oil change, Audi recommends
having your engine oil changed by an authorized
Audi dealer or authorized Audi Service Facility.
If you change the engine oil yourself, please note
the following important information:

Z\ WARNING
If you change the engine oil on the vehicle
yourself, the following precautions must be
followed:
— Wear protective eyewear.
— Due to the risk of scalding, allow the engine
to cool down sufficiently.
— 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 || indi-
cator light. However, occasionally checking the
coolant level 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 252.
—If the coolant level is too low, add coolant
=> page 252. Only continue driving once the in-
dicator light turns off.
g 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
Gl12evo
Specification
TL774L


The amount of coolant additive that needs to be
mixed with water depends on the climate where >
251

Checking and Filling

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.
— 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.
252


= Fe [RAZ-0540)

MIN


Fig. 170 Engine compartment - Coolant expansion tank:
@ cover with release button; @) markings
Observe the safety precautions > page 245, Gen-
eral information.
Checking the coolant level
>» Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 246.
> Check the coolant level in the coolant expan-
sion tank > page 247, fig. 168 using the outer
markings (2) > fig. 170. 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.
> When you add coolant to the expansion tank,
please refer to S page 251, 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. 170 on the
cap and carefully turn it to the left until you
feel resistance > A\.
> Push the release button again and remove the
cap completely.
» Add coolant mixed in the correct ratio
= page 251 up to the MAX marking.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.

4M1012721BC
Checking and Filling

> 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 245, 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.
Brake fluid

BFV-0229]


Fig. 171 Engine compartment: cap on brake fluid reservoir
Observe the safety precautions > page 245, 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 247, fig. 168 at both
openings and remove it.
> Read the brake fluid level on the brake fluid res-
ervoir > page 247, fig. 168. The brake fluid lev-
el must be between the MIN and MAX markings
of.
The brake fluid level is monitored automatically.
Messages
EG / @ 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

253

Fuses and bulbs

ZA\ WARNING
Do not repair fuses and never replace a blown
fuse with one that has a higher amp rating.
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.
@) 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. 197 Front passenger's footwell (right-hand drive vehi-
cle): fuse panel with plastic clip

(brown) nT <7 wo @ 7 oo 3 o

Zz ° . | Equipment

Catalytic converter heating

Engine components

Engine components

Engine components

Brake light sensor

Engine components

Engine components

Engine components

WOlLOlINI
AD)
M|ASWIN/
PR
Engine components

B o Oil pressure sensor, oil temperature sensor

Bb BR Engine components

BR N Engine components

b Ww Engine cooling

BE R Engine control module

B wn Engine sensors
Bb a Fuel pump



panel with plastic clip Fuse


No. | Equipment

1 {Ignition coils



3 | High-voltage heating

298

4M1012721BC
Fuses and bulbs

































Fuse panel @) (red) Fuse panel (4) (brown)
4 |Compressor 1 Intersection assistant, driver assist sys-
5 |Engine mount tems
6 |Windshield washer system control module 12 | Right headlight
7 |Instrument panel 13 | Left headlight
8 | Climate control system blower 15 | USB input
9 | Driver assistance systems control module 16 | Rear Seat Entertainment preparation
10 | Emergency call system Fuca panel G) (DD)
11 | Engine start, electric drive clutch No. | Equipment
12 | Right Headlight 1 |Anti-theft alarm system
Fuse panel (8) (black) 2 |Engine control module
No. | Equipment 3 | Front seat electronics, lumbar support
1 | Front seat heating 4 |Automatic transmission selector lever
2 |Windshield wipers 5 |Horn
3 | Left headlight electronics 6 |Parking brake
4 |Panoramic glass roof 7 | Diagnostic interface
5 |Left front door control module 8 | Roof electronics control module
6 |Sockets 9 |48 V drivetrain generator
7 |Right rear door control module 10 | Airbag control module
8 | Left headlight 1 Electronic Stabilization Control (ESC), An-
9 |Right headlight electronics trtock Braking System cine
in Windshield washer systemn/headlight 12 Diagnostic connection, light/rain sensor
washer system control module 13 | Climate control system
11 | Left rear door control module 14 | Right front door control module
12 | Parking heater 15 |Climate control system compressor
Fase panel @ (brown) 16 | Brake system pressure reservoir
Nou) Faipmsns Fuse assignment - Driver's side of the
Seat ventilation, seat electronics, rearview (oleae
1 mirror, rear climate control system control
panel, diagnostic connection, traffic infor-
mation antenna (TMC)

N
Vehicle electrical system control module,
diagnostic interface

Sound generator

Transmission fluid cooling valve

Engine start, electric drive

Night vision assist, active roll stabilization

wW}oa;m|
&|w
Adaptive cruise assist, front wheel sensors


10 Exterior sound generator


LE EEEL|
Fig. 198 Driver side cockpit: fuse panel with plastic bracket D>
299

4M1012721BC

A
A/C cooling mode..........-. eee eee eee ee 94
A/C system refrigerant oil............... 314
Accelerator pedal.............2--00000- 102
also refer to Accelerator pedal.......... 102
ACCESSOFICS 2. eee 310
Active lane assist
refer to Lane departure warning......... 149
refer to Lane guidance................ 149
Adaptive cruise assist................04. 139
Cleaning the sensors..............0055 281
Adaptive cruise control
Predictive control................0005 143
Adaptive dampers ........... 000000 eee 114
Adaptive speed assist
refer to Adaptive cruise assist.......... 139
Adjusting the air distribution............. 94
Adjusting the brightness................. 55
Adjusting the rear seats.................. 67
Adjusting the sound................0005 236
Adjusting the temperature............... 94
Adjusting the vents ccs <= csws + © sews +o oer 96
Adjusting the volume.............e eee eee 30
Adjusting the volume (announcements) .... 236
Adjusting the welcome sound............ 236
Airbag system... 2.2... eee eee 75
AIPSUSPENSION ix. o © aoewes « 2 menses + meme» 5, v0 114
Alarm system
refer to Anti-theft alarm system.......... 37
Alignment pin (changing the wheel)....... 286
All-weather lights...............-..00005 50
All-wheel steering.............---00005 115
ALUS@aSOntineSies. « 3 ssasess «x aimee a & iwesane sw a8 275
All wheel drive
refer to quattro.............0 0. eee 116
Amazon Alexa integration
Media playback................00000. 223
Operating « « seen s » ewes se eee G s FeeE Ys BOS 28
AMI
refer to Audi music interface........... 224
Android Auto
refer to Audi smartphone interface...... 234
Anti-lock braking system................ 117
AnitisSlip REQUlation ws a & sos se weae 9 oe 117
Anti-theft alarm system...............05. 37
Anti-theft wheel bolts...............0... 289
Apple CarPlay
refer to Audi smartphone interface...... 234
Aspect ratio
VIdCO eee eee eee eee eee 228, 230
ASR
refer to Anti-Slip Regulation............ 117
Audi adaptive light...............-.0000- 50
Audi connect
refer to CONnNect ; «= = sass ss sees ss eee ee ae 194
Audidrive'selecticy, « + scum oz scum « x pewe yoo 113
Audi entertainment mobile.............. 225
Audi entertainment mobile device
Removing « « sees « sews gs sees xe ees cee 226
SOGUMING's « « ssessie © ccerave 2 6 sesnew « araneos w @ are 226
Tilting... 2... eee eee eee 226
Audi music interface................00- 224
AUGIOFLES xo: 5, coc: i « commons ow cme = at sammie = 226
Audi phone Bx: « sccvise so eaves so emane oe meses 185
Audi pre sense .........0 seve cece ee eee 151
Messages ........... 0.00.0 eee eee 155
Audi pre sense front.............-...0-- 152
Audi side assist
refer to Side assist............-0000005 155
Audi smartphone interface.............. 234
Legalinformation..................0. 239
Audi virtual cockpit
refer to Instrument cluster.............. 12
AUTO
Automatic headlights .................. 50
Climate control system..............0-- 94
Auto Lock (central locking) ............... 34
Automatic climate control system
refer to Climate control system.......... 93
Automatic luggage compartment lid.... 42, 43
Automatic transmission................ 100
Parking lock emergency release......... 102
Automatic wipe/wash system............. 58
Average consumption................... 15
Average speed... 2.2... cee eee eee eee 15
B
Bagshooks3. « swiss o anewivs © ¥ arene 6 6 oman © oes 87
Band
refer to Frequency band............... 214
315