AUDI A8 2021 Owners Manual

4N0012721BF
Driver assistance

Switching off
If you do not want to use the adaptive cruise as-
sist for a longer period of time, you can switch it
off.
> Push the lever away from you into position @)
until it clicks into place.
The indicator light and the set speed will turn off.

Z\ WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
— The adaptive cruise assist is only an assist
system, and the driver is still responsible for
controlling the vehicle. The driver is espe-
cially responsible for braking, steering,
starting to drive, and controlling the speed
and the distance from other vehicles.
— Turn on the adaptive cruise assist only if the
surrounding conditions permit it. Always
adapt your driving style to the current visu-
al, weather, road, and traffic conditions.
— Switch the adaptive cruise assist off tempo-
rarily when driving in turning lanes or high-
way exits. This prevents the vehicle from ac-
celerating to the stored speed when in these
situations.
— If you press the [SET] button @) when driv-
ing at speeds below 15 mph (20 km/h), the
minimum possible speed that the system
can maintain will be set. If no vehicle is de-
tected ahead of you, the vehicle will acceler-



ate up to that speed.

@) Tips
— Always keep your hands on the steering
wheel so you can be ready to steer at any
time. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— If you switch the ignition or the adaptive
cruise assist off, the stored speed is erased
for safety reasons.

D In certain countries.
— When the adaptive cruise assist is switched
on, the ESC and the ASR are switched on au-
tomatically.
— The system cannot be switched off or it may
be interrupted if the road exceeds the maxi-
mum possible grade for safe operation.
Switching lane guidance on and off
Applies to: vehicles with adaptive cruise assist and lane guid-
ance

B8V-0692


Fig. 122 Turn signal lever: button for lane guidance and
lane departure warning
Within the limits of the system, lane guidance
provides corrective steering to assist the driver
with keeping the vehicle in the center of the lane
as much as possible. This feature can be deacti-
vated.
Ina traffic jam, lane guidance also helps with
leaving a space for emergency vehicles ) by
steering your vehicle as close to the edge of your
lane as possible.
Switching lane guidance on and off
Requirement: lane guidance must be preselected
in the MMI > page 174.
> To activate or deactivate the availability of the
lane guidance, press the button on the turn sig-
nal lever > fig. 122.
The system will assist the driver by providing cor-
rective steering only when adaptive cruise assist
is actively regulating and availability is switched
on.
169

Driver assistance

Overview of displays and lane guidance
limitations
The availability of lane guidance is shown with in-
dicator lights and with arrows @) > page 167,
fig. 119 in the Driver assistance display.
> 4] - Lane guidance is active.
Bl - this indicator light turns on if the limits of
the system have been reached (for example, the
system’s steering force is not sufficient to handle
tight curves). Take over steering.
ri turns white, lane guidance is switched on
but is not active. This may occur due to the fol-
lowing system limits or situations:
— The necessary lane marker lines have not been
detected (for example, in a construction zone
or because the lines are obstructed by snow,
dirt, water, or lighting)
— The lane is too narrow or too wide
— The curve is too narrow
— Visibility is obstructed by a rise or dip.
— The driver's hands are not on the steering
wheel
— The turn signal was activated.
Steering intervention request
If no steering activity is detected or the limits of
the system are reached, the driver steering inter-
vention request will alert the driver using audio
and visual signals, such as B or B. Take over
the steering and keep your hands on the steering
wheel so that you will be ready to steer at any
time. The system will become inactive after a
short time and will only be active again later.
If the driver does not take over steering, adaptive
cruise assist will be canceled. If the vehicle is
equipped with emergency assist and it is ready to
function, it will be activated if possible
=> page 186.

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.

170
G) Tips
— Always keep your hands on the steering
wheel so you can be ready to steer at any
time. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— Audi recommends only switching on lane
guidance on well-constructed roads.
—The > fig. 122 button switches lane guid-
ance availability and the lane departure
warning on or off simultaneously, if lane
guidance is preset in the adaptive cruise as-
sist settings.
Predictive control
Applies to: vehicles with adaptive cruise assist and efficiency
assist

Fig. 123 Instrument cluster: speedometer: predictive con-
trol display
With predictive control, efficiency assist adapts
the set speed in adaptive cruise control @) based
on detected speed limits and the upcoming
route. Once the system no longer detects any in-
cidents, adaptive cruise control will accelerate
back up to the last speed that the driver set. Af-
ter switching on the ignition, the availability of
predictive control is indicated by a message when
the adaptive cruise assist is first activated.
Incident symbols indicate the situation to which
predictive control is reacting > page 165, Situa-
tion symbols.
Requirements
— Predictive control is switched on in the MMI
> page 174.
— The adaptive cruise assist must be actively reg-
ulating > page 168.

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Driver assistance

— The system can only react to speed limits that
are 15 mph (20 km/h) or higher.
Display in the speedometer
The display depends on vehicle equipment and is
not available in all layouts”.
@ The marking shows the set speed (regulated
speed that was set by the driver or by predic-
tive control).
@ The red band shows the difference between
the speed limit and the set speed that is set.
@® The gray band shows if the vehicle speed is
planned to drop below the set speed due to
the road layout.
Overriding control
The driver can override the predictive control at
any time by pressing the accelerator or brake
pedal. If the system changes the vehicle speed to
adapt to speed limits, you can change the speed
using the lever > page 168, fig. 121.
Messages
If and a message with Adaptive cruise assist:
Predictive control is displayed when there is a
malfunction, the efficiency assist functions are
unavailable or limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 152 and try to turn the system on
again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.

switched on. The driver is always responsible
for assessing the traffic situation.
— The system does not consider “right of way”
rules and does not respond to traffic lights,
so lack of driver attention in these situations
can increase the risk of an accident.
— The speed when driving through curves may
be different from what you as a driver would
do or may not be suitable for the weather
and road conditions. If necessary, apply the
brakes and reduce the selected speed to be
maintained in the Adjustment to curves
along route setting to reduce the risk of an

accident.


ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
— Pay attention to traffic and the area around
your vehicle when predictive control is


D In certain countries.
Gi) Tips
— Predictive control can exceed or drop below
the maximum permitted speed. The driver
is responsible for adhering to the permitted
speed limit.
— The traffic signs on the road always take pri-
ority over the display. The driver is always
responsible for adhering to the regulations
applicable in the country where the vehicle
is being operated.
— Ifa speed limit is detected, the marking @
of the set speed Limit will be adjusted even
if the adaptive cruise assist is not actively
regulating.
— Control by the system depends on which
adaptive cruise assist driving program is set
or on the selected Audi drive select* mode.
— After switching on the ignition and first
driving onto a freeway or similar road with-
out a speed limit, the system will regulate
the speed to 80 mph (130 km/h)). Then
the system adjusts to the last speed set by
the driver.
— There is no adaptation to speed limits when
driving through highway interchanges and
when driving on or off the expressway.
— The system can fail to provide control or the
control may be faulty if the values from the
camera-based traffic sign recognition* are
171
>

Driver assistance

incorrect or the navigation system map data
is outdated.
— When route guidance is switched on, the
system adapts to the route provided by the
navigation system. Driving without route
guidance or leaving a route can result in
faulty control.
Setting the distance
Applies to: vehicles with adaptive cruise assist

B4M-0234


Fig. 124 Operating lever: setting the distance
If you adjust the speed, you must also change the
time gap to the vehicle driving ahead. The higher
the speed, the greater the distance that is need-
ed.
> Tap the rocker switch to display the distance
that is currently set.
> To increase or decrease the distance in incre-
ments, tap the switch again toward @) or ().
The newly-set distance will be shown briefly, for
example with the indicator light. In the Driv-
er assistance display, a graphic display is shown
instead of the indicator lights > page 167,
fig. 119. The display matches the functions of
the indicator lights.

When approaching a vehicle driving ahead, the
adaptive cruise assist brakes to the set speed and
then maintains the set distance. If the vehicle
driving ahead accelerates, then the adaptive
cruise assist will also accelerate up to the speed
that you have set.
The following distances can be set:
172

Meaning

The time between is approximately 1
second. This setting corresponds to a
distance of approximately 92 feet
(100 m) when traveling at 62 mph
(28 m/h).
The time between is approximately 1.3
seconds. This setting corresponds toa
distance of approximately 118 feet
(100 m) when traveling at 62 mph
(36 m/h).
The time between is approximately 1.8
seconds. This setting meets the general
recommendation of “half the speed
shown on the speedometer”. This cor-
responds to a distance of approximate-
ly 164 feet (50 m) when traveling at
62 mph (100 km/h).
The time between is approximately 2.4
seconds. This setting corresponds toa
distance of approximately 219 feet
(100 m) when traveling at 62 mph
(67 m/h).
The time between is approximately 3.6
seconds. This setting corresponds toa
distance of approximately 328 feet
(100 m) when traveling at 62 mph
(100 m/h).
1D
D



Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.

G) Tips
— When setting the distance, the driver is re-
sponsible for adhering to any applicable le-
gal regulations.
— Depending on the selected driving program
and distance, driving behavior when acceler-
ating may vary from moderate to sporty
=> page 174, Adjusting the adaptive cruise
assist.
—The distances provided are specified values.
Depending on the driving situation and how
the vehicle ahead is driving, the actual >

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Driver assistance

distance may be more or less than these tar-
get distances.
Overriding control
Applies to: vehicles with adaptive cruise assist

[RAZ-0096]


Fig. 125 Lever: overriding the control
Requirement: the adaptive cruise assist must be
switched on.
Overriding control
You can completely override the control, for ex-
ample when passing or if you would like to accel
erate more quickly.
> To accelerate manually, pull the lever toward
you in the direction of the arrow and hold it
there, or press the accelerator pedal.
> To resume the usual cruise control, release the
lever or remove your foot from the accelerator
pedal.
When you are in the Driver assistance display,
the message Overridden will appear.
Decreasing the distance
The function decreases the set distance and pro-
vides assistance, for example when merging
when a lane is ending.
> To further reduce the distance to the vehicle
ahead temporarily, pull the lever toward your-
self in the direction of the arrow and hold it in
that position.
> To resume the system control, release the lever.
The adaptive cruise assist reduces the distance
and, if necessary, accelerates the vehicle above
the set speed. When you are in the Driver assis-

D_ This is not available in some countries.

tance display, the message Overridden will ap-
pear.

Z\ WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
— Resting your foot on the accelerator pedal
could override the cruise control. Braking in-
terventions and corrective actions by the
system may not occur.
Driving in stop-and-go [3
Applies to: vehicles with adaptive cruise assist

RAZ-0398
Fig. 126 Instrument cluster: safe start monitor
Stopping with adaptive cruise assist
The adaptive cruise assist also assists you in stop-
and-go traffic. Within the limits of the system,
your vehicle may brake and remain at a stop if a
vehicle driving ahead stops.
Starting to drive with adaptive cruise assist!)
As long as the message ready to drive and A is
displayed, your vehicle will begin driving when
the vehicle ahead starts to move > /\.
If you are stopped for several seconds, your vehi-
cle will no longer drive autonomously for safety
reasons, and the message will turn off.
> To extend ready to drive for several seconds or
reactivate, pull the lever briefly towards you in
the direction of the arrow > page 173, fig. 125.
> To resume manual control of the vehicle, tap
the accelerator pedal. >
173

Driver assistance

Safe start monitor
The vehicle can still start to drive even if certain
obstacles are detected when starting to drive
> /\. If the surrounding area detection detects
an obstacle, you will be alerted to the danger by
the aA indicator light.
If you are in the Driver assistance display, the
display @ © fig. 126 and the message Warning!
will also appear. An audio signal will also sound.
Your vehicle will drive more slowly when starting.
This may also occur in some situations when
there is no apparent obstacle.
> Press the brake pedal to slow your vehicle
down.

ZA\ WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras © page 150.
— If the message ready to drive!) appears,
your vehicle will start driving even if there is
an obstacle between your vehicle and the ve-
hicle ahead. To reduce the risk of an acci-
dent, always make sure there are no obsta-
cles between your vehicle and the vehicle
driving ahead.

G) Tips
For safety reasons, adaptive cruise assist is
only active if:
— The driver's safety belt is fastened
— All doors and the hood are closed
— Your vehicle is not stopped for a long period
of time

D_ This is not available in some countries.
174
Driver intervention request
Applies to: vehicles with adaptive cruise assist
Fig. 127 Instrument cluster: request for driver interven-
tion
The request for driver intervention instructs you
to resume manual control of the vehicle if the
adaptive cruise assist braking function is not able
to maintain a sufficient distance to the vehicle
ahead. The system will warn you of the hazard
with the A indicator light and the message Dis-
tance!. An audio signal will also sound.
The display @ only appears when the Driver as-
sistance display is open in the on-board comput-
er > page 16.

ZA\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
Adjusting the adaptive cruise assist
Applies to: vehicles with adaptive cruise assist

You can adjust the adaptive cruise assist to your
own preferences. The settings depend on the ve-
hicle equipment.
> Applies to MMI: Select on the home screen: VE-
HICLE > Driver assistance > (<3) > Adaptive
cruise assist.
Possible settings:
Lane guidance - If lane guidance is also active
when adaptive cruise assist control is active, you
can switch it on or off.
Driving program - Depending on the driving pro-
gram and the distance that are set, the vehicle

>

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Driver assistance

handling will be adjusted from Sport to Moder-
ate and the lane guidance haptic feedback will be
adjusted.
Store last distance - The last distance that was
set will be stored after the ignition is switched
off. If the distance is not stored, distance
(time distance of approximately 1.8 seconds) is
automatically preset every time the ignition is
switched on.
Predictive control > Set speed limit - adaptation
to speed limits can be switched On or Off. Regu-
lation With tolerance can also be selected, if de-
sired.
In this scenario, you may fall below or ex-
ceed the set speed in favor of increased efficien-
cy.
Predictive control > Adjustment to curves along
route - regulation based on the road ahead can
be switched Off or set individually from Slow to
Fast. The setting influences vehicle handling with
predictive control, for example the speed for
driving through curves.
Werle lt
Applies to: vehicles with adaptive cruise assist
if or fal is displayed when there is a malfunc-
tion, the adaptive cruise assist functions may be
unavailable or limited.

A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 152 and try to turn on the sys-
tems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
Applies to: vehicles with narrowed road assist
Narrow area
Depending on vehicle equipment, this message
appears in the Driver assistance display if the
adaptive cruise assist is adjusting the speed ina
narrow area, for example a construction zone.


Adaptive cruise assist: Please take over!
Adaptive cruise assist was ended, for example be-
cause the vehicle rolled backwards when starting
on a slight incline even though the system was
active. You must take over further control of the
vehicle.
Adaptive cruise assist: limited availability.
See owner's manual
This message appears when the sensor view is
limited, for example, when weather conditions
are too poor or a sensor is covered. You can
switch on the adaptive cruise assist, but certain
functions such as assistance in narrow areas will
not be available. Under certain circumstances,
some objects may be detected late or may not be
detected at all. Be especially careful. Cleaning
the area in front of the sensors > page 152 may
correct the malfunction.
Distance warning

Applies to: vehicles with distance warning
RAZ-0401
Applies to: vehicles with adaptive cruise assist
Fig. 128 Instrument cluster: display of the current dis-
tance
[RAZ-0400}
Applies to: vehicles with adaptive cruise assist:
Fig. 129 Instrument cluster: distance warning
General information
At speeds above approximately 40 mph (65
km/h), this function measures the distance to the >
175

Driver assistance

vehicle ahead as time. If the distance falls below
the warning threshold, the system warns you of
the hazard with the we indicator light.
Image in the Driver assistance display
Applies to: vehicles with adaptive cruise assist
The display only appears if the Driver assistance
display is selected on the on-board computer
= page 16 and the adaptive cruise assist is not
actively controlling the vehicle.
@ Detected vehicle driving ahead
@ Use the markings to help you estimate the
distance to an obstacle. Each marking repre-
sents approximately one second.
@®) Set warning threshold. Depending on the set-
tings, the display will be colored in from the
bottom to the top.
@ The actual distance is smaller than the set
distance and you will be informed about the
danger.
Adjusting the distance warning
The system can be switched on and off in the
MMI > page 153.
You can adjust the distance warning threshold to
your preferences. The settings depend on the ve-
hicle equipment.
— Applies to MMI: Select on the home screen: VE-
HICLE > Driver assistance > (<3) > Distance
warning
Messages
ir or is displayed when there is a malfunc-
tion, the distance warning functions may be un-
available or may be limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 152 and try to turn the system on
again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
176

ZA WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
G) Tips
— The driver is always responsible for adhering
to the regulations applicable in the country
where the vehicle is being operated.
— You may fall below the warning threshold
briefly when passing or when quickly ap-
proaching a vehicle driving ahead. There is
no warning in this scenario. A warning is giv-
en only if you fall below the warning thresh-
old for an extended period of time.

Lane departure warning
General information
Applies to: vehicles with lane departure warning
The lane departure warning can detect lane
marker lines within the limits of the system. If
you are approaching a detected lane marker and
it appears likely that you will leave the lane, the
system can warn you with corrective steering and
a steering wheel vibration, if necessary.
The system functions in the speed range of ap-
proximately 40 mph - 155 mph (65 km/h -
250 km/h).

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.

4N0012721BF
Driver assistance

Applies to: vehicles with lane departure warning

B8V-0692


Fig. 130 Turn signal lever: lane departure warning button
RAZ-0107

Fig. 131 Instrument cluster: driver assistance display
Switching the lane departure warning on and
off
> To switch the system on or off, press the button
=> fig. 130. The respective indicator light in the
instrument cluster will turn off or on.
Display and warning
The availability and readiness to provide warn-
ings will be indicated with the nail indica-
tor lights. You can also open the Driver assis-
tance display in the on-board computer
=> page 16. The display matches the functions of
the indicator lights.
@ White lines: the lane departure warning is
switched on but not ready to provide warn-
ings.
@ Green line: the lane departure warning is
ready to provide warnings on the respective
side.
® Corrective steering will be indicated with iA
If the lane departure warning must intervene
for a long period of time, a message will re-
quest the driver to drive in the center of the
lane. The steering wheel can also vibrate to
warn you if lane boundaries are detected dur-
ing a passing maneuver.
The lane departure warning is ready to provide
warnings if an object is detected on at least one
side of the individual lane.
If the A indicator light turns on, the lane depar-
ture warning is not ready to provide warnings.
This may occur due to the following system limits
or situations:
— The necessary lane marker lines have not been
detected (for example, in a construction zone
or because the lines are obstructed by snow,
dirt, water, or lighting)
— The speed is below the activation speed
— The lane is too narrow or too wide
— The curve is too narrow
— The driver's hands are not on the steering
wheel
— Visibility is obstructed by a rise or dip.
Steering intervention request
If the lane departure warning intervenes multiple
times when no steering activity is detected, the
steering intervention request will provide a warn-
ing using audio and visual signals, such as Ey.
Take over the steering and keep your hands on
the steering wheel so that you will be ready to
steer at any time. The system may no longer be
ready to provide warnings after a short time, and
it will only become active again later.
If the driver does not take over steering, the lane
departure warning will no longer be ready to pro-
vide warnings. If the vehicle is equipped with
emergency assist and it is ready to function, it
will be activated > page 186.
Behavior when a turn signal is active
Applies to: vehicles with side assist: The system
will not warn you if you activate a turn signal be-
fore crossing the lane marker line. In this case, it
assumes that you are changing lanes intentional-
ly.
Applies to: vehicles with side assist: If the turn
signal is activated, the lane departure warning is
ready, and a lane change has been classified as
critical by the lane departure warning due to
177
>

Driver assistance

vehicles traveling beside you or due to approach-
ing vehicles, then a noticeable corrective steering
movement will occur shortly before exiting the
lane. This will attempt to keep your vehicle in the
lane.

ZX WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
— The system warns the driver that the vehicle
is leaving the lane using corrective steering.
The driver is always responsible for keeping
the vehicle within the lane.
— Corrective steering may not occur at all in
certain situations, such as during heavy
braking. Always be ready to intervene.

@ Tips
— Always keep your hands on the steering
wheel so you can be ready to steer at any
time. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— The system does not provide any corrective
steering or steering wheel vibrations if it de-
tects that you are passing another vehicle.
Adjusting the lane departure warning
Applies to: vehicles with lane departure warning
The additional warning using vibration in the
steering wheel can be switched off or on. The set-
tings depend on the vehicle equipment.
— Applies to MMI: Select on the home screen: VE-
HICLE > Driver assistance > (<) > Lane depar-
ture warning > Vibration warning.
Messages
Applies to: vehicles with lane departure warning
rey or By is displayed when there is a malfunc-
tion, the lane departure warning and lane guid-
ance functions of the adaptive cruise functions
may be unavailable or limited.

D_ This is not available in some countries.
178
A message that indicates the cause and possible
solution
may appear with some displays. The
weather conditions may be too poor or the cam-
era may be covered. Clean the area in front of the
camera > page 152 and try to turn on the sys-
tems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
Audi pre sense
Introduction
Applies to: vehicles with Audi pre sense
Within the limits of the system, the Audi pre
sense functions can initiate measures in certain
driving situations to protect the vehicle occu-
pants and other road users. Depending on the ve-
hicle equipment, various Audi pre sense systems
may
be installed:
— Audi pre sense basic can react during emergen-
cy and dangerous braking maneuvers and un-
stable driving situations (such as oversteering
or understeering).
— Audi pre sense front) can detect an impending
frontal impact and react with warnings, braking
interventions, and preemptive safety measures
for the vehicle occupants.
— Audi pre sense rear monitors the rear traffic
behind your vehicle and can react to an impend-
ing rear impact.
— Audi pre sense side can detect an impending
side impact from cross-traffic and vehicles com-
ing from the side, and can initiate preemptive
safety measures.
— The swerve assist can help you to steer the ve-
hicle around an obstacle during an evasive ma-
neuver that is detected as critical.
— The turn assist can detect vehicles in the oppo-
site lane as critical during a turning maneuver
and react with braking maneuvers.