2021 AUDI Q8 wheel torque

Instrument cluster

> Browse to the desired display if necessary.
G meter
The G meter displays the longitudinal and lateral
acceleration. The current values are displayed in
the instrument cluster while driving. The maxi-
mum values that are reached are stored and dis-
played when the vehicle is stationary. Only the
maximum values that are reached are displayed
in the MMI.
> To reset the stored values, press and hold the
left thumbwheel on the multifunction steering
wheel for one second.
Tire pressure
The tire pressure monitoring system displays the
current tire pressures and temperatures. Also see
= page 276, Tire pressure monitoring system.
Engine data
The engine data in the instrument cluster shows
which percentage of the maximum output or
maximum torque is currently being used.
Temperature
The temperature display in the MMI shows the
temperature of various fluids and vehicle compo-
nents, such as the engine oil or sport differential.
Inclinometer
The inclinometer in the MMI shows the sideways
and lengthwise angle of the vehicle in relation to
the horizon. It shows both the current values and
the maximum values that were reached
=> page 108.
Vehicle functions
LO TaV TN]
The trip computer is displayed in the first tab of
the driver information system. Additional vehicle
functions can be accessed depending on the vehi-
cle equipment.
> Press the =] button on the multifunction steer-
ing wheel.
— Trip computer > page 16
— Reduced display > page 14
16
— Reset trip odometer > page 14
— Sport displays > page 15
—Lap times > page 129
— Lap statistics > page 130
— Acceleration measurement > page 130
On-board computer
Resetting values to zero
Requirement: the Consumption, Short-term
memory, or Long-term memory display must be
selected.
> To reset the values in one of the memories to
zero, press and hold the left thumbwheel on
the multifunction steering wheel for one sec-
ond, or
> Select on the instrument cluster: vehicle func-
tions tab > I button > Reset mi.
Depending on the vehicle equipment, you can call
up the following displays in the on-board com-
puter one at a time by turning the left thumb-
wheel on the multifunction steering wheel:
— Time and date > page 233
— Average consumption > page 16
— Short-term memory overview
— Long-term memory overview
— Energy consumers > page 17
— Driver assistance
— Traffic sign recognition and traffic light infor-
mation
Short-term memory and long-term memory
The short-term memory collects driving informa-
tion from the time the ignition is switched on un-
til it is switched off. If you continue driving within
two hours after switching the ignition off, the
new values will be included when calculating the
current trip information.
Unlike the short-term memory, the long-term
memory is not erased automatically. You can se-
lect the time period for evaluating trip informa-
tion yourself.
Average consumption
The current consumption can be shown using a
bar graph. The average consumption stored in >

4M8012721BF
Driving dynamic

comparable to a vehicle without rear axle steer-
ing. Drive carefully to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction corrected.
BS Steering lock: malfunction! Please contact
Service
There is a malfunction in the electronic steering
lock. Drive immediately to an authorized Audi
dealer or authorized Audi Service Facility to have
the malfunction repaired.

IX WARNING
Do not tow your vehicle if there is a malfunc-
tion in the electronic steering lock because
this increases the risk of an accident.
@ Tips
—If there is a malfunction, the steering wheel
may be crooked when driving straight.
—Ifthe A or indicator light only stays on
for a short time, you may continue driving.

All wheel drive (quattro)
Applies to: vehicles with all wheel drive
The all-wheel drive system distributes the driving
power variably to the front and rear axle to im-
prove the driving characteristics. It works togeth-
er with selective wheel torque control, which can
activate when driving through curves
=> page 116.
The all-wheel drive system is designed for high
engine power. Your vehicle is exceptionally pow-
erful and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre-
cautions > A\.

Z\ WARNING
— Even in vehicles with all wheel drive, you
should adapt your driving style to the cur-
rent road and traffic conditions to reduce
the risk of an accident.
— The braking ability of your vehicle is limited
to the traction of the wheels. In this way, it

is not different from a two wheel drive vehi-
cle. Do not drive too fast because this in-
creases the risk of an accident.
— Note that on wet streets, the front wheels
can “hydroplane’” if driving at speeds that
are too high. Unlike front wheel drive
vehicles, the engine RPM does not increase
suddenly when the vehicle begins hydro-
planing. Adapt your speed to the road condi-
tions to reduce the risk of an accident.
By Tamer!
Applies to: vehicles with sport differential


The sport differential distributes the drive power
to the rear axle based on the situation. The goal
is a high level of agility and ability to accelerate
on curves. The vehicle is very responsive to steer-
ing. The settings depend on the selected Audi
drive select* mode.
Messages
it} Sport differential: malfunction! Please con-
tact Service
Drive immediately to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction repaired.
it} Sport differential: temperature too high.
Please adapt driving style
The transmission temperature has increased sig-
nificantly due to the sporty driving manner. Drive
in a less sporty manner until the temperature re-
turns to the normal range and the indicator light
switches of.

ZA\ WARNING
Contact an authorized Audi dealer or author-
ized Audi Service Facility if the sport differen-
tial is faulty or malfunctioning. The repair
must be performed by trained personnel us-
ing the correct oil in order to ensure safety.

115

Driving dynamic

Electronic Stabilization
Control
Electronic Stabilization Control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critical sit-
uations, such oversteering and understeering of
the vehicle, the drive wheels spinning, or the risk
of the vehicle tipping.
The brakes are applied or the engine torque is re-
duced in order to stabilize the vehicle.
The following stabilization functions are integrat-
ed into the ESC, among others:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking when brak-
ing. The vehicle can still be steered even during
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal.
A pulsing in the brake pedal indicates that the
system is acting to stabilize the vehicle.
Anti-Slip Regulation (ASR)
ASR reduces drive power when the wheels begin
spinning and adapts the power to the road condi-
tions. This will increase the driving stability.
Electronic Differential Lock (EDL)
The EDL applies the brakes to wheels that are
slipping and transfers the drive power to the oth-
er wheels. This function is not available at higher
speeds.
In extreme cases, EDL automatically switches off
to keep the brake on the braked wheel from over-
heating. The vehicle is still functioning correctly.
EDL will switch on again automatically when con-
ditions have returned to normal.
Selective wheel torque control
Selective wheel torque control is used when driv-
ing on curves. Braking is targeted toward the
wheels on the inside of the curve as needed. This
allows more precise driving in curves.
116
Power steering
The ESC can also support vehicle stability
through steering.

ZA WARNING
— The ESC and its integrated systems cannot
overcome the limits imposed by natural
physical laws. This is especially important on
slippery or wet roads. If the systems begin
acting to stabilize your vehicle, you should
immediately alter your speed to match the
road
and traffic conditions. Do not let the in-
creased safety provided tempt you into tak-
ing risks. This could increase your risk of a
collision.
— Please note the risk of a collision increases
when driving fast, especially through curves
and on slippery or wet roads, and when driv-
ing too close to objects ahead. There is still
a risk of accidents because the ESC and its
integrated systems cannot always prevent
collisions.
— Accelerate carefully when driving on
smooth, slippery surfaces such as ice and
snow. The drive wheels can spin even when
these control systems are installed and this
can affect driving stability and increase the
risk of a collision.
— As the vehicle load increases, especially the
roof load, the vehicle's center of gravity also
increases along with the risk of the vehicle
tipping. To reduce the risk of an accident, al-
ways adapt your driving style to the current
conditions and avoid sudden driving maneu-
vers.
G) Tips
— The ABS and ASR only function correctly
when all four wheels have a similar wear
condition. Different tire sizes can lead toa
reduction in engine power.
— You may hear noises when the systems de-
scribed are working.
The So button (or #, depending on the model)
for controlling the ESC is located in the center


>

Wheels


ZA\ WARNING
Wheel bolts that are tightened or repaired in-
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct tightening specifi-
cation, see > page 291, Finishing.
— Always keep the wheel bolts and the threads
in the wheel hub clean and free of grease.
— Only use wheel bolts that fit the rim.
— Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility. Never repair or disassemble
rims yourself, because this increases the risk
of an accident.
Loose wheel warning
Applies to: vehicles with loose wheel warning

Within the limits of the system, the loose wheel
warning in the instrument cluster warns you if
one or more wheels are loose.
Using the ABS sensors, the loose wheel warning
system compares the vibration characteristics of
the individual tires. If one or more wheels are
loose, it will be indicated in the instrument clus-
ter display with the & indicator light and a mes-
sage. If only one wheel is affected, the location
of that wheel will be indicated.
Messages
fi Wheel bolts loose. Please safely stop the ve-
hicle and check all wheel bolts!
Loose wheel warning for at least one wheel > A\.
Check the wheel bolts on all wheels with the
wheel wrench (vehicle tool kit). Have the tighten-
ing specification checked as soon as possible with
a torque wrench. Drive carefully until then. For
the correct tightening specification, see
=> page 291, Finishing.
fl Wheel assessment active. Please continue
driving carefully
After this message appears and you have checked
the wheel bolts, the assessment phase begins
when the vehicle is in motion. This may take sev-
eral minutes.
272
fi Loose wheel warning: malfunction! See
owner's manual
There is a system malfunction. Drive immediately
to an authorized Audi dealer or authorized Audi
Service Facility to have the malfunction repaired.

Z\ WARNING
Wheel bolts that are tightened incorrectly can
become loose and result in loss of vehicle con-
trol, which increases the risk of an accident.
— If a message appears, reduce your speed im-
mediately and avoid any hard steering or
braking maneuvers. Stop as soon as possible
and check the wheel bolts.
— Check your wheels for damage. Have the
damaged wheels checked and/or replaced
immediately by an authorized Audi dealer or
authorized Audi Service Facility.
— Under certain conditions (such as a sporty
driving style, winter conditions, or unpaved
roads), the message may be delayed.
— The driver is responsible for ensuring that
the wheels are attached correctly.
(i) Tips
— The loose wheel warning system can also
stop working when there is an ESC malfunc-
tion.

— Using snow chains may result in a system
malfunction.
Winter tires significantly improve the vehicle's
handling when driving in winter conditions. Be-
cause of their construction (width, compound,
tread pattern), summer tires provide less traction
on ice and snow.
> Use winter tires on all four wheels.
> Only use winter tires that are approved for your
vehicle.
> Please note that the maximum permitted
speed may be lower with winter tires > A\ in
General information on page 256. An author-
ized Audi dealer or authorized Audi Service Fa-
cility can inform you about the maximum per-
mitted speed for your tires.

4M8012721BF
Emergency assistance





height, which increases the risk of an acci-
Removing the caps
\e4
Fig. 173 Wheel: wheel bolts with caps

B4L-1337




> Slide the plastic clip from the vehicle tool kit
onto the cap until it engages > fig. 173.
> Remove the cap with the plastic clip.
ON tated 1 re)
Applies to: vehicles with anti-theft wheel bolts

B4H-0470
i ue
Fig. 174 Anti-theft wheel bolt with cap and adapter


You need a special adapter in the vehicle tool kit
to remove the anti-theft wheel bolts.
> Remove the cap (2).
> Slide the adapter @) all the way onto the anti-
theft wheel bolt @.
> Slide the wheel wrench* from the vehicle tool
kit all the way onto the adapter @).
> Loosen the wheel bolt > page 289.

D_ You need the matching adapter in order to loosen and
tighten anti-theft wheel bolts* > page 289.
@) Tips
Note the code number for the wheel bolt
adapter and store it in a safe place separate
from the vehicle. If you need a replacement
adapter, contact an authorized Audi dealer or
authorized Audi Service Facility and give them
the code number.
Loosening the wheel bolts




B4S-0221
SS Ws
Fig. 175 Wheel: loosening the wheel bolts

> Slide the wheel wrench* from the vehicle tool
kit all the way onto the wheel bolt).
> Turn the wheel bolt approximately one turn to
the left. To achieve the required torque, hold
the end of the wheel wrench*. If the wheel bolt
will not loosen, press carefully on the wheel
wrench* with your foot. Hold onto the vehicle
securely while doing this and make sure your
footing is stable.

ZA\ WARNING
To reduce the risk of an accident, only loosen
the wheel bolts gently one turn before raising
the
vehicle with the vehicle jack*.


289

4M8012721BF
Emergency assistance

Removing and installing a wheel
@ Rg Tt
“ 0 oO

B8K-1477


Removing a wheel
> Remove the top wheel bolt completely using
the hex socket in the screwdriver handle from
the vehicle tool kit > fig. 178 and place it ona
clean surface.
> Then install the alignment pin from the vehicle
tool kit by hand in the empty wheel bolt hole
> fig. 179”.
> Remove the rest of the wheel bolts.
> Remove the wheel >(). The alignment pin re-
mains in the hole while doing this.
Installing a wheel
Read the directions on > page 291 when instal-
ling unidirectional tires.
> Slide the wheel on over the alignment pin >@.
> Install the wheel bolts and tighten them gently
using the hex socket.
> Remove the alignment pin and tighten the re-
maining wheel bolt.

D Applies to: vehicles with ceramic brake rotors*: Use a sec-
ond alignment pin* from the vehicle tool kit for the lowest
hole according to the steps described for the first align-
ment pin.
> Carefully lower the vehicle using the vehicle
jack*.
> Tighten the wheel bolts in a diagonal pattern
using the wheel wrench*.
The wheel bolts must be clean and loosen and
tighten easily. Check the contact surfaces for the
wheel and hub. Contaminants on these surfaces
must be removed before installing the wheel.

ZX WARNING
— Read and follow the important information
and notes under > page 263.
— Never use the hex socket in the screwdriver
handle to tighten the wheel bolts. Using the
hex
socket will not achieve the required
tightening torque, which increases the risk
of an accident.
() Note
When removing or installing the wheel, the
rim could hit the brake rotor and damage the
rotor. Work carefully and have a second per-
son help you.
Unidirectional tires
A unidirectional tire profile is identified by arrows
on the tire sidewall that point in the running di-
rection. You must always maintain the specified
running direction. This is necessary to ensure the
tire's optimal performance in regard to adhesion,
running noise, and friction, and to reduce the risk
of
hydroplaning.

To benefit fully from the advantages of the uni-
directional tire design, you should replace faulty
tires as soon as possible and restore the correct
running direction on all of the tires.
> Reinstall the caps on the wheel bolts if necessa-
ry.
291

Emergency assistance

> Store the vehicle tool kit in its designated
place.
> If the removed wheel does not fit in the spare
wheel well, store it securely in the luggage
compartment > page 83.
> Check the tire pressure on the installed wheel
as soon as possible.
> Correct the tire pressure and store it in the MMI
=> page 276 or > page 278.
> The wheel bolt tightening specification must be
120 ft lbs (160 Nm). Have it checked as soon as
possible with a torque wrench. Drive carefully
until then.
> Have the faulty wheel replaced as quickly as
possible.
Collapsible spare tire
Applies to: vehicles with collapsible spare tire
The collapsible spare tire is intended for short-
term use only. Have the damaged tire checked
and replaced if necessary by an authorized Audi
dealer or authorized Audi Service Facility as soon
as possible.
There are some restrictions on the use of the col-
lapsible spare tire. The collapsible spare tire has
been designed specifically for your type of vehi-
cle. Do not replace it with the collapsible spare
tire from another type of vehicle.
The collapsible spare tire is located in the lug-
gage compartment under the cargo floor cover.
Requirement: the vehicle tool kit > page 286 and
the compressor must be laid out.
Removing
> Lift the cargo floor using the handle.
> Turn the handwheel counter-clockwise and re-
move it.
> Remove the collapsible spare tire.
You must inflate the collapsible spare tire before-
hand in order to use it.
Inflating
> Remove the valve cap from the collapsible
spare tire.
> Tighten the compressor hose on the collapsible
spare tire valve.
292
> Connect the compressor hose to a vehicle sock-
et and switch it on.
> Let the compressor run until the specified value
on the tire pressure sticker is reached
> page 266, fig. 168 >.
> Screw the valve cap back onto the valve.
Returning to storage
> To release air, turn the valve insert. See an au-
thorized Audi dealer or authorized Audi Service
Facility.
> Turn the valve insert back once the air has been
released.
> Wait several hours before placing the collapsi-
ble spare tire in the spare wheel well. Only then
will it fold down completely so that you can
store it securely.
> Then screw the valve cap back onto the valve.
> Secure the collapsible spare tire with the hand-
wheel.
> Fold the cargo floor cover back into place.
Snow chains
Using snow chains on the collapsible spare tire is
not permitted for technical reasons.
If you have to drive with snow chains and a rear
tire fails, mount the collapsible spare tire in place
of a front tire. Install the snow chains on the
front tire that you removed, and install that in
place of the rear tire that failed.

Z\ WARNING
— Only use the collapsible spare tire in emer-
gencies and drive very carefully, especially if
it is more than six years old.
— The compressor and the hose can become
very hot during operation which increases
the risk of burn injuries.
— After installing a collapsible spare tire, the
tire pressure must be checked as quickly as
possible to reduce the risk of an accident.
— Do not drive faster than 50 mph (80 km/h)
with the collapsible spare tire. Driving faster
than that increases the risk of an accident.
— To reduce the risk of an accident, avoid hard
acceleration or braking and driving fast
around curves with the collapsible spare
tire.

4M8012721BF

Parking aids. + csssce x2 esemne oo encase ve enmuate ¥ ¥ 159
Adjusting the volume.............0005 161
Automatic activation.................. 160
Cleaning the sensors and camera........ 281
Deactivating rear cross-traffic assist. ... . 166
Park.assist plus; < - eses ss eee% ss eeaes es 170
Parking:aid plus « cisvie s & coe 6 soos ao wre 159
Parking space search.................. 167
Peripheral cameras................-4. 162
Rearview cametaies . 2 sccm so ewan vo exe y 162
Remote controlled parking............. 173
Switching off maneuver assist.......... 179
Trailerview's 2 ssn sees 2 o meow oo eee 2 ¥ 163
Parking and maneuvering............... 159
Parking brake
refer to Electromechanical parking brake. 106
Parking lightSivn « s mew ¢ o mews o ewney 3 ween a SL
Parking lock emergency release.......... 100
Partition Wetec s = ems sv seme s s meen ob eee 86
Pass-through...........2--..0 eee eee ee 86
Pedals. .... 2.2... cece eee eee eee eee 99
Pedestrian detection................04. 131
Perchlorate ....... 0... cee eee eee 308
Performance/torque display
refer to Sport displays.................. 15
Peripheral cameras.............--000-- 162
Phone
Connecting a second mobile device...... 182
Disconnecting a mobile device.......... 183
Sete S crnics ao serene «meme « w anene © memes w 188
Phonebook
refer to Directory.............0 eee ae 186
PIN
4-digit myAudi PIN..............-..00- 32
PROLCCUONica « s wou + & wiseu s & vaewe ¢ ¥ cows 33
Playback (media) « « sscs sv sees se eee ve es 223
Podcast
refer to Online radio............6% 216,217
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Power windows...........--.0 eee eee eee 46
Malfunctions « < seas ss saws ¢ 2 eee de eee 46
Predictive control.............0..00000- 141
Predictive messages...............- 99,136
pre sense
refer to Audi presense................ 149
Presentation mode...............-.005- 211
Presets
Radio... 2... 2. eee eee 215
Presets list
feferto Presets. «= isas teresa veieas ce 215
Pressure
Tire pressure monitoring system.... 275,276
THRs. oo sowie oo ceusie © 6 arene © 8 aoe we meee 266
Profilespietures siswin x + scausm a 3 aimesm © 0 omawene eH 32
Progressive StESTING’s ¢ & mews ¢ x wows ¢ y news ¢ 114
Protectinng:cs < = saves ¢ = saree & © eewie +s owes 282
Pyrotechnic elements............-...0- 308
Q
QGUSUERO's sas « 5 Nees 5 EGS, eB Eo HaeeR 115
Selective wheel torque control.......... 116
R
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Radio text. ....... cece eee eee eee 215
Station list... 00... . eee eee eee 212
Radio communications equipment........ 310
Radio equipment.............. 0c eee eee 310
Radio Standards Specification (RSS)....... 311
Railseanrion’s «ssw 2 women ae ones: ao mcm 2 © a 112
Rain/light sensor
Headlights ......... 0.0... ce eee ee eee §1
Intermittent mode (windshield wipers) .... 57
Random
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RAnGe’s « sane se neue 5 & mem 5 y ae GB ee 16
Reading lights................00. eee eee 54
Rear cross-traffic assist............000.. 166
Rear lid
refer to Luggage compartment lid........ 43
Rear lowering.......... 00.0 e cece eee eee 85
Rear seats... 0... eee cece eee 65
Rearview camera...... 0.0.2... 0 ee ee eee 162
Rear window defogger............-..0--- 92
Rear wiper blades
Changing ......... 0. cece ee eee eee eee 59
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