2021 AUDI A7 wheel size

4K8012721BF
Voice recognition system

Voice recognition system
General information
Applies to: vehicles with voice recognition system
You can operate many functions in the vehicle
easily using voice commands.
Using the voice recognition system optimally
> Speak clearly and distinctly at a normal volume.
Speak louder when driving faster.
» Emphasize the words in the commands evenly
and do not leave long pauses.
> Close the doors, the windows, and the sunroof*
to reduce background noise. Make sure that
passengers are not speaking when you are giv-
ing a voice command.
> Do not direct the vents toward the hands-free
microphone, which is in the roof headliner near
the front interior lights.
> Only the driver should speak to the system, be-
cause the handsfree microphone is aimed to-
ward this seating position.

ZA\ WARNING
— Direct your full attention to driving. As the
driver, you have complete responsibility for
safety in traffic. Only use the functions in
such a way that you always maintain com-
plete control over your vehicle in all traffic
situations.
— Do not use the voice recognition system in
emergencies because your voice may change
in stressful situations. The system may take
longer to dial the number or may not be
able to dial it at all. Dial the emergency

number manually.

G) Tips
There are no voice guidance* prompts when a
dialog is active.
Description
eye aU mame ees eR
Applies to: vehicles with voice recognition system
Se
Drive me to
Where is a a
Connect
Pre)
Play
Eg
Maes
coy

Fig. 19 Upper display: voice recognition system
Requirement: the ignition and the MMI must be
switched on. A system language supported by
the voice recognition system must be set. There
must be no phone calls in progress and the park-
ing aid must not be active.
Operating by button «£
> Briefly press the «€ button on the multifunction
steering wheel, or depending on the context,
press we in the upper display.
> Say the desired command after the signal tone.
> To switch the voice recognition system off,
press and hold the «€ button on the multifunc-
tion steering wheel, or say or press Cancel (@)
> fig. 19.
Operating with voice commands
> Applies to: MMI: To operate the voice recogni-
tion system using voice commands, select on
the home screen: SETTINGS > General >
(Speech dialog system) > Activate the speech
dialog system with "Hey Audi".
> Say the activation phrase Hey Audi together
with the desired command.
> To switch the voice recognition system off, say
Cancel or press and hold the «£ button on the
multifunction steering wheel, or press @)
> fig. 19.
Commands and assistance
In the voice recognition system menu, possible
commands or help settings are displayed for the
current dialog @).
> To receive additional help for the current dia-
log, say or press Help (2).
29

4K8012721BF
Sitting correctly and safely

— PASSENGER AIR BAG OFF #; ON ® indi-
cator light in the headliner:this indicates if the
front passenger's airbag is activated or deacti-
vated
- indicator light in the instrument cluster:
this monitors the function of the Advanced Air-
bag System components to ensure they are
functioning correctly
How the components function together
The passenger occupant detection sensor in the
front passenger's seat detects if the front pas-
senger's seat is occupied. The passenger occu-
pant detection sensor measures the electrical ca-
pacity on the front passenger’s seat. The pas-
senger's airbag is activated or deactivated de-
pending on the electrical capacity that is meas-
ured.
The passenger's airbag is activated if:
— The electrical capacity is higher than the
threshold stored in the control module
— The electrical capacity is the same as or greater
than the electrical capacity of a typical adult
The passenger's airbag is deactivated if:
— The electrical capacity is lower than the thresh-
old stored in the control module
— The electrical capacity is the same as or less
than the electrical capacity of a typical one-
year-old child in a child safety seat that has
been used for certification in accordance with
FMVSS 208
If the front passenger's airbag is activated, the
PASSENGER AIR BAG ON @ indicator light
will turn on. If the front passenger's airbag is de-
activated, the PASSENGER AIR BAG OFF #;
indicator light will turn on.
The deployment force of the front airbags adapts
based on whether or not the safety belt is used
and the distance between the seat and the steer-
ing wheel/instrument panel. For example, if a
person is too close to the front airbag, the front
airbag will deploy with less force to help reduce
the risk of injury.
Meaning of PASSENGER AIR BAG OFF 3%, ON
® indicator light
When the ignition is switched on, the system de-
tects whether the front passenger's seat is occu-
pied. PASSENGER AIR BAG OFF #;, ON @
will turn on for several seconds during this proc-
ess. Then it will indicate whether the front pas-
senger's airbag is activated or deactivated.
— PASSENGER AIR BAG OFF #%;: the front
passenger's airbag is deactivated and will not
deploy in the event of an accident.
— PASSENGER AIR BAG ON ®: the front pas-
senger's airbag is activated and could deploy in
the event of an accident.
If a change to the occupancy status of the front
passenger's seat is detected
PASSENGER AIR BAG OFF #; ON @ will
flash for several seconds and will then display the
status of the front passenger's airbag.
Always make sure the indicator light corresponds
to the occupancy of the front passenger's seat.
— An adult or individual of similar size in the
front passenger's seat: the front passenger's
airbag must be activated, therefore
PASSENGER AIR BAG ON ® must remain
turned on.
— An individual of smaller size (for example, an
adolescent or small adult) in the front pas-
senger's seat: the front passenger's airbag
must be activated, so
PASSENGER AIR BAG ON ® must stay on.
— Child in a child safety seat on the front pas-
senger's seat: the front passenger's airbag
must be deactivated, so
PASSENGER AIR BAG OFF #; must stay on.
— Front passenger's seat not occupied: the front
passenger's airbag must be deactivated, so
PASSENGER AIR BAG OFF #; must stay on.

ZA\ WARNING
— An adult or a person with a small stature
(such as a young person or small adult) seat-
ed on the front passenger's seat will not be
protected by the passenger's airbag in the
event of a collision if the passenger's airbag

75

4K8012721BF
Driving dynamic

Driving dynamic
Audi drive select
Introduction
Applies to: vehicles with Audi drive select
Drive select makes it possible to experience dif-
ferent types of vehicle characteristics in one vehi-
cle. With different driving modes, the driver can
switch the setting, for example from sporty to
comfortable. This allows you to adjust the set-
tings to your personal preferences. This makes it
possible to combine settings such as a sporty
drivetrain setting with comfortable steering.
Selecting an Audi drive select mode
Applies to: vehicles with Audi drive select
The size button is located above the selector lever
in the center console.
> Press the left or right arrow key until the de-
sired mode appears in the MMI. Or:
> Applies to MMI: Select on the home screen: VE-
HICLE > Audi drive select.
You can change the driving mode when the vehi-
cle is stationary or while driving. If traffic per-
mits, briefly remove your foot from the accelera-
tor pedal after changing modes so that the mode
you have selected will be activated for the drive
system.
The following modes may be available depending
on the equipment:
Comfort - Provides a comfort-oriented vehicle
setup and is suited for long drives on highways.
Auto
- Provides an overall comfortable yet dy-
namic driving feel and is suited for everyday use.
Dynamic - Gives the driver a sporty driving feel
and is suited to a sporty driving style. The “S”
driving program is selected.
Individual - Provides the option for personalized
vehicle settings. Press to configure the mode
= page 111, Individual settings.
@) Tips
When the ignition is being switched on, indi-
vidual systems, such as the drive system, will
be reset to a balanced setting. Select the cur-
rent mode again to attain its full configura-
tion.
Selecting RS mode
Applies to: RS models
In RS models, there are two individual adjustable
RS modes instead of the individual mode.
Selecting the mode
> Press the fas button on the multi-function
steering wheel to switch between the RS modes
and the last selected Audi drive select mode.
Or:
> Applies to MMI: Select on the home screen: VE-
HICLE > Audi drive select.
Adjusting the mode
> Applies to MMI: Select on the home screen: VE-
HICLE > Audi drive select.
> Press to configure the respective RS mode
=> page 111, Individual settings.
Individual settings
Applies to: vehicles with Audi drive select
The equipment in your vehicle will determine
which settings you can adjust.
Drive
The drive system will react to accelerator pedal
moves more quickly or in a more balanced man-
ner. The shift points are placed in higher or lower
speed ranges.
Depending on the setting, the drive power at the
rear axle will be distributed with the sport differ-
ential* to be more sporty or moderate
> page 115.
In RS models, the sport differential is adjusted
using a separate menu item.
111

Driving dynamic

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.
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

116

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.
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
console, in front of the selector lever. The ESC is
automatically switched on when the ignition is
switched on.

Limiting ESC
In some situations, it may make sense to limit
the stabilizing function of the ESC so that the
wheels can spin, for example to rock a vehicle to
free it when it is stuck or to drive with snow
chains. The ESC can also be limited to provide
more sporty driving characteristics with fewer
stabilizing corrective actions.
—To limit the ESC, press the oF button briefly.
The B indicator light will turn on.
— To completely reactivate the ESC stabilization
function, press the button again. The indicator
light turns off.
Switching off ESC
For a more active control of the vehicle where the
stabilizing functions of the ESC cannot intervene,
the ESC can be switched off.

4K8012721BF
Wheels

Tire designations

B8K-2316


Fig. 170 Tire designations on the side-
wall
@ Tires for passenger vehicles
(if applicable)
“P” indicates a tire for a passen-
ger vehicle. “T” indicates a tire
designated for temporary use.
@ Nominal width
Nominal width of the tire be-
tween the sidewalls in millime-
ters. In general: the larger the
number, the wider the tire.
@) Aspect ratio
Height/width ratio expressed as a
percentage.
@ Tire construction
“R” indicates a radial tire.
©) Rim diameter
Size of the rim diameter in inches.
© Load index and speed rating
The load index indicates the tire's
load-carrying capacity.
The speed rating indicates the
maximum permitted speed. Also
see > A in General information on
page 274.
“EXTRA LOAD”, “xl” or “RF” indi-
cates that the tire is reinforced or
is an Extra Load tire.






Speed rat- /Maximum permitted speed
ing
P up to 93 mph (150 km/h)
Q up to 99 mph (160 km/h)
R up to 106 mph (170 km/h)
S up to 110 mph (180 km/h)
T up to 118 mph (190 km/h)
U up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
Vv up to 149 mph (240 km/h)?
Zz above 149 mph (240 km/h)?)
w up to 168 mph (270 km/h)?
y up to 186 mph (300 km/h)?

a) For tires above 149 mph (240 km/h),
tire manufacturers sometimes use the
code “ZR”.
275

4K8012721BF
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.
277

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Wheels

Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs.
(2.3 kg) in excess of those stand-
ard items which they replace, not
previously considered in curb
weight or accessory weight, in-
cluding heavy duty brakes, ride
levelers, roof rack, heavy duty
battery, and special trim.
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the
beads are laid at substantially
90 degrees to the centerline of
the tread.
Recommended inflation
pressure
see > page 277, Cold tire infla-
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Rein-
forced tires may be identified as
“XL”, “xl”, “EXTRA LOAD”, or “RF”
on the sidewall.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated.
Rim diameter
means nominal diameter of the
bead seat. If you change your
wheel size, you will have to pur-
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be-
tween the tread and bead.
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend-
ed periods of time. The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h) > table
on page 275. You may not find
this information on all tires be-
cause it is not required by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates the >
279

4K8012721BF
Wheels

by the tire manufacturer. This in-
formation is used to contact con-
sumers if a tire defect requires a
recall.
Vehicle capacity weight
means the rated cargo and lug-
gage load plus 150 lbs. (68 kilo-
grams) times the vehicle's desig-
nated seating capacity.
Vehicle maximum load on the
tire
means that load on an individual
tire that is determined by distrib-
uting to each axle its share of the
maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual
tire that is determined by distrib-
uting to each axle its share of the
curb weight, accessory weight,
and normal occupant weight (dis-
tributed in accordance with > ta-
ble on page 286) and dividing by
two.
Occupant loading and distri-
bution for vehicle normal load
for various designated seating
capacities
Refer to the tire inflation pressure
label > page 284, fig. 173 for the
number of seating positions. Re-
fer to the table > table on
page 286 for the number of peo-
ple that correspond to the vehicle
normal load.
New tires or wheels
Audi recommends having all work
on tires or wheels performed by
an authorized Audi dealer or au-
thorized Audi Service Facility.
These facilities have the proper
knowledge and are equipped with
the required tools and replace-
ment parts.
>New tires do not yet have the
optimal gripping properties.
Drive carefully and at moderate
speeds for the first 350 miles
(500 km) with new tires.
> Only use tires with the same de-
sign, size (rolling circumfer-
ence), and as close to the same
tread pattern as possible on all
four wheels.
> Applies to: RS models: Only use
tires with the same design, size
(rolling circumference), and the
same tread pattern on all four
wheels.
>Do not replace tires individually.
At least replace both tires on the
same axle at the same time.
281
>