2021 AUDI Q8 fuel

4M8012721BF
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 Q8: 295/40 ZR22 112Y 32 220 32 220 35 240 38 260
4.0L 155 mph (250 km/h)
8-cylinder o 295/40 ZR22 112Y 38 260 38 260 41 280 44 300
174 mph (280 km/h)
295/40 ZR22 112Y 41 280 41 280 46 320 49 340
190 mph (305 km/h)
295/35 ZR23 108Y 36 250 36 250 39 270 42 290
155 mph (250 km/h)
295/35 ZR23 108Y 44 300 44 300 46 320 49 340
174 mph (280 km/h)
295/35 ZR23 108Y 46 320 46 320 48 330 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 (“GVWR”)
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
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

4M8012721BF
Wheels

> Check the tire pressure after installing wheels
=> page 266.
The effectiveness of winter tires is reduced great-
ly when the tread is worn down to a depth of
0.16 in (4 mm). The characteristics of winter tires
also decrease greatly as the tire ages, regardless
of the remaining tread.
@) For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear, and fuel
consumption.
@) Tips
You can also use all season tires instead of
winter tires. Please note that in some coun-
tries where winter tires are required, only win-
ter tires with the 4 symbol may be permit-
ted.
Tea
Snow chains improve both driving and braking in
winter road conditions.
> Only install snow chains on the rear wheels.
> Check and correct the seating of the snow
chains after driving a few feet, if necessary. Fol-
low the instructions from the manufacturer.
> Note the maximum speed of 30 mph
(50 km/h). Observe the local regulations.
Use of snow chains is only permitted with certain
rim/tire combinations due to technical reasons.
Check with an authorized Audi dealer or author-
ized Audi Service Facility to see if you may use
snow chains.
Use fine-mesh snow chains. They must not add
more than 0.40 inch (10.5 mm) in height, includ-
ing the chain lock.
You must remove the snow chains on roads with-
out snow. Otherwise, you could impair driving
ability and damage the tires.

ZA\ WARNING
Using incorrect snow chains or installing snow
chains incorrectly can result in loss of vehicle
control, which increases the risk of an acci-
dent.
(@) Note
— Snow chains can damage the rims and
wheel covers* if the chains come into direct
contact with them. Remove the wheel cov-
ers* first. Use coated snow chains.

— Do not install and use snow chains if there is
a malfunction in the air suspension*, be-
cause the vehicle height will be very low. If
you drive with snow chains anyway, the
wheel housings and other vehicle compo-
nents can be severely damaged.
G@) Tips
When using snow chains, it may be advisable
to limit the ESC > page 116.
Low-profile tires
Applies to: vehicles with low-profile tires
Compared to other tire/rim combinations, low-
profile tires offer a wider tread surface and a
larger rim diameter with shorter tire sidewalls.
This results in an agile driving style. However, it
may reduce the level of comfort and increase
road noise when driving on roads in poor condi-
tion.
Low-profile tires can become damaged more
quickly than standard tires when driving over
large bumps, potholes, manhole covers, and
curbs. Therefore, it is particularly important to
maintain the correct tire pressure > page 266.
To reduce the risk of damage to the tires and
rims, drive very carefully on poor roads.
Check your wheels regularly every 2,000 mi
(3,000 km) for damage. For example, check for
bulges/cracks on the tires or deformations/cracks
on the rims.
After
a heavy impact or damage, have the tires
and rims inspected or replaced immediately by
273
>

4M8012721BF
Wheels

As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a low tire pressure tell-
tale when one or more of your tires is significant-
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving ona signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re-
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys-
tem is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal-
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
If the tire pressure monitoring indicator
appears
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Using the ABS sensors, the tire pressure monitor-
ing system compares the tire tread circumference
and vibration characteristics of the individual
tires. If the pressure changes in one or more
tires, this is indicated in the instrument cluster
display with an indicator light @ and a message.
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored again each
time you change the pressures (switching be-
tween partial and full load pressure) or after
changing or replacing a tire on your vehicle
= page 276. The tire pressure monitoring system
only monitors the tire pressure you have stored.
Refer to the tire pressure label for the recom-
mended tire pressure for your vehicle
> page 266, fig. 168.
Tire tread circumference and vibration character-
istics can change and cause a tire pressure warn-
ing if:
— The tire pressure in one or more tires is too low
— The tires have structural damage
— The tire was replaced or the tire pressure was
changed and it was not stored > page 276
— Tires that are only partially used are replaced
with new tires
Indicator lights
If the @ indicator light turns on, there is a loss
of pressure in at least one tire .> A\ Check the
tires and replace or repair if necessary. Check and
correct the pressures of all four tires and store
the pressure again > page 276.
ia Tire pressure: malfunction! See owner's
manual
fe appears after switching the ignition on or
while driving and the @ indicator light in the in-
strument cluster blinks for approximately one
275
>

Wheels

minute and then stays on, there is system mal-
function. Try to store the correct tire pressures
= page 276. Insome cases, you must drive for
several minutes after storing the pressures until
the indicator light turns off. If the indicator light
does turn off or turns on again after a short peri-
od of time, drive to an authorized Audi dealer or
authorized Audi Service Facility immediately to
have the malfunction corrected.

ZA\ WARNING
— If the tire pressure indicator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu-
vers. Stop as soon as possible and check the
tires and their pressure.
— The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
— Under certain conditions (such as a sporty
driving style, winter conditions, or unpaved
roads), the tire pressure monitoring system
indicator may be delayed.

(i) Tips
— The tire pressure monitoring system can al-
so stop working when there is an ESC mal-
function.
— Using snow chains may result in a system
malfunction.
— The tire pressure monitoring system in your
Audi was calibrated with “Audi Original
Tires” > page 263. Audi recommends using
these tires.
Storing tire pressures
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
If the tire pressure changes or a tire is replaced,
it must be confirmed in the MMI.
> Before storing the tire pressures, make sure the
tire pressures in all four tires meet the speci-
fied values and are adapted to the load
=> page 266.
> Switch the ignition on.
> Applies to MMI: Select on the home screen: VE-
HICLE > Settings & Service > Tire pressure
276
monitoring > Store tire pressure > Yes, store
now.
@) Tips
Do not store the tire pressures if snow chains
are installed.
Tire pressure monitoring
system
(1) General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat-
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la-
bel, you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a Low tire pressure tell-
tale when one or more of your tires is significant-
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving ona signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re-
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys-
tem is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously >

Care and cleaning




Component Situation Solution
Laser scanner Deposits Soft sponge with a mild soap solution®
Wheels Road salt Water
Brake dust Acid-free special cleaning solution
Exhaust tail Road salt Water, cleaning solution suitable for stainless steel, if nec-
pipes essary
Decorative parts | Deposits Mild soap solution ®, a cleaning solution suitable for stain-
and
trim
less steel, if necessary

Paint Paint damage Repair with touch-up paint

Spilled fuel Rinse with water immediately

Surface rust Rust remover, then treat with hard wax; for questions, con-
sult an authorized Audi dealer or authorized Audi Service
Facility.

Corrosion Have it removed by an authorized Audi dealer or authorized
Audi Service Facility.

Water no longer
beads on the surface
of clean paint
Treat with hard wax (at least twice per year)

No shine even though
paint has been pro-
tected/paint looks
poor
Treat with suitable polish; then apply paint protectant if
the polish that was used does not contain any protectant

Deposits such as in-
sects, bird droppings,
tree sap, and road
salt
Dampen with water immediately and remove with a micro-
fiber cloth

Grease-based con-
taminants such as
cosmetics or sunblock
Remove immediately with a mild soap solution ® and a soft
cloth

Carbon compo-__| Deposits clean the same way as painted parts > page 280
nents
Decorative decals | Deposits Soft sponge with a mild soap solution®

a) Mild soap solution: maximum two tablespoons of
Interior cleaning
neutral soap in 1 quart (1 liter) of water


Component Situation Solution
Window glass Deposits Glass cleaner, then wipe dry
Decorative parts | Deposits Mild soap solution®
and
trim
Plastic parts Deposits Damp cloth



Heavier deposits Mild soap solution @), detergent-free plastic cleaning solu-

tion, if necessary

282

4M8012721BF
Fuses and bulbs

@) 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. 189 Driver's footwell: fuse panel with plastic clip

Fuse panel (4) (brown)


No. | Equipment

Catalytic converter heating

Engine components

Engine components

Engine components

Fig. 188 Driver's footwell: fuse panel with plastic clip

Brake light sensor

Engine components

Engine components

Engine components

WlLOlINI
AD)
MW)
ASWIN/
PR
Engine components

BR Oo Oil pressure sensor, oil temperature sensor

b Bb Engine components

R N Engine components

H Ww Engine cooling

fa BR Engine control module

BR uw Engine sensors

Bb a Fuel pump

Fuse


No. | Equipment

1 | Ignition coils

3 | High-voltage heating


299

4M8012721BF
Fuses and bulbs





























Fuse panel (a) (black) Fuse panel (2) (black)
8 |Upper/lower display 10 | Front belt tensioner on driver's side
9 |Instrument cluster Luggage compartment lid central locking,
10 | DVD drive 11 | fuel filler door, luggage compartment cov-
11 | Light switch, switch panels Sf
12 [Steering column electronics 12 |Luggage compartment lid control module
13 | Volume control Fuse panel (2) (red)
14 |MMI Infotainment system control module No. | Equipment
15 | Steering column adjustment 1 | Rear climate control system blower
16 | Steering wheel heating 2 |Sound-amplifier
3 | Exhaust treatment, sound actuator
Fuse assignment 4 |Rear climate control system control panel
ST 5 | Right trailer hitch light
6 | Trailer hitch positioning motor
7 |Trailer hitch release
8 |Left trailer hitch light
9 |Trailer hitch socket
10 |Allroad sport differential
11 | Exhaust treatment
12 |Driver’s side rear safety belt tensioner
Fuse panel @) (brown)
No. | Equipment
Driver assistance systems control module
2. |Audi phone box
« : E -| a fl r al i] " f E 3 Front seat electronics, right lumbar sup-
{ | aE ] | port
- 4 |Side assist
6 |Tire pressure monitoring system
Fig. 191 Left side of the luggage compartment: fuse panel 7 | Bxeharanitenina
with plastic clip 8 Auxiliary heating radio receiver, tank mod-
ule
Fuse panel (@) (black) 10 TV tuner, data exchange and telematics
No. | Equipment control module
1 High-voltage heating, thermomanage- rt Convenience access and start authoriza-
ment tion control module
5. |Air suspension/suspension control 12 | Garage door opener
6 | Automatic transmission control module 13 | Rearview camera, peripheral cameras
: Rear seat heating, rear climate control sys- 14 Convenience system control module, right
tem controls tail light
9 |Central locking, left tail light

301

Accessories and technical changes

Accessories and
technical changes
Warranty
Your vehicle is covered by various warranties:
— New Vehicle Limited Warranty
— Limited Warranty Against Corrosion Perforation
— Emissions Control System Warranties: Federal
Emissions Control System Defect Warranty,
Federal Emissions Performance Warranty
— Applies to: USA models: Kansas Safety Belt
Limited Warranty
— Applies to: USA models: California Emissions
Control Warranties: Short-term Emissions De-
fects Warranty, Long-term Emissions Defects
Warranty, TZEV models Emissions Defects
Warranty, California Emissions Performance
Warranty
You can find detailed information in your Warran-
ty & Maintenance Booklet and in the California
Emissions Booklet*.
Audi Literature Shop
Service information is made available as soon as
possible after a model is introduced and can be
ordered in the Audi Literature Shop: http://
literature.audiusa.com
Driving in other
countries
Government regulations in the United States and
Canada require motor vehicles to comply with
emissions regulations and safety standards.
Therefore, vehicles that were produced for the
U.S. and Canadian markets are different from
vehicles produced for other countries.
If you plan to use your vehicle outside of the
United States or Canada, it is possible that:
— Fuel may have a significantly lower octane rat-
ing. Unsuitable fuels can cause engine damage.
— Proper maintenance and repair work may not
be possible because special service equipment,
tools, or measuring devices needed for your ve-
hicle may not be available.
308
— Replacement parts may not always be availa-
ble.
— Navigation systems for vehicles built for the
U.S.A. and Canada will not necessarily work in
Europe, and may not work in other countries.
(1) Note
Audi is not liable for damage to the vehicle re-
sulting from these country-specific differen-
ces.
Maintenance, repairs,
and technical modifi-
cations
Observe the safety precautions > page 242, Gen-
eral information and > page 290, Raising the ve-
hicle.
General information
Due to the increasing complexity of technology in
these vehicles, as well as the safety and environ-
mental standards that apply, you can only per-
form a very limited amount of repairs and modifi-
cations to the vehicle yourself.
Proof of maintenance work may be required to
submit a claim within the warranty period.
We recommend that you have your vehicle serv-
iced by an authorized Audi dealer or authorized
Audi Service Facility and that Audi Genuine Parts
and Audi Genuine Accessories are used. This
helps to ensure that your vehicle's functionality,
performance, and safety are not impaired.
Maintenance and repairs
Your vehicle was designed to help keep mainte-
nance requirements to a minimum. Some regular
maintenance is required to help ensure that your
vehicle runs in a safe, economical, and reliable
manner. Please refer to your Warranty & Mainte-
nance Booklet for more detailed information
about vehicle maintenance.
When operating the vehicle under more extreme
operating conditions, for example when outside
temperatures are very low or in very dusty envi-
ronments, certain maintenance should be per-
formed between the specified intervals.