2021 AUDI A4 steering

8W1012721BC
Driver assistance

— The system does not react to a stationary vehi- @ - @, you can find more detailed information
cle in the same lane if it expects that you can about the system. The displays depend on the
easily drive around the stationary vehicle by country and equipment.
turning the steering wheel.
— The system cannot react to stationary objects, Display th thespeedsmeter
such as vehicles at the end of a traffic jam, es- @ Marking for the set speed
pecially when traveling at high speeds. @ Current vehicle speed
— The system has a limited ability to detect © Available speed range for the adaptive cruise
vehicles that are a short distance ahead, off to control (example)
the side of your vehicle, or moving into your
iane: Image in the Driver assistance display
— Objects that are difficult to detect, such as mo- The display only appears when the Driver assis-
torcycles, vehicles with high ground clearance, tance display is open in the on-board computer
or vehicles with an overhanging load, may be > page 16.
detected late or not detected at all.
— The system does not respond to people, ani-
mals, or objects that are crossing or approach-
ing from the opposite direction.
Messages and settings
Detected vehicle driving ahead
Set target distance
If you fall below the set distance, the dis-
tance bars turn red from the bottom upward.

ZA WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117. Your
vehicle
Availability of Audi active lane assist
©O©©OQ®
COG®
Availability of traffic jam assist


Indicator lights
BI alo A - The speed/distance control is active. No
Applies to: vehicles with Audi adaptive cruise control

vehicles were detected ahead. The stored speed
is maintained.
RAZ-0205. a - The speed/distance control is active. A vehi-
cle was detected ahead. The system controls the
speed and distance from the vehicle driving
ahead, and accelerates and brakes automatically.
A - The speed/distance control is active but the
vehicle is not ready to drive. A vehicle was de-
tected ahead. Your vehicle is stationary and will
not start driving automatically. BI 3 9) nN | fac B - The speed/distance control is active but the
vehicle is not ready to drive. No vehicles were de-
tected ahead. Your vehicle is stationary and will
not start driving automatically.
aA - The automatic braking is not enough to
maintain a sufficient distance from a vehicle driv-
Fig. 108 Instrument cluster: driver assistance display ing ahead. You must intervene > page 137, Driv-
er intervention request. >

Indicator lights and messages in the speedome-
ter @ -@ inform you about the driving situation
and the settings. In the Driver assistance display
131

8W1012721BC
Driver assistance

Switching off
If you do not want to use the adaptive cruise con-
trol for a long 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 117.
— The activated adaptive cruise control is only
an assist system, and the driver is still re-
sponsible for controlling the vehicle. The
driver is especially responsible for braking,
steering, starting to drive, and controlling
the speed and the distance from other
vehicles.
— Turn on the adaptive cruise control only if
the surrounding conditions permit it. Always
adapt your driving style to the current visu-
al, weather, road, and traffic conditions.
— Switch adaptive cruise control off temporari-
ly when driving in turning lanes, on express-
way exits or in construction zones. This pre-
vents the vehicle from accelerating 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 sys-
tem can maintain will be set. If no vehicle is
detected ahead of you, the vehicle will accel-



erate up to that speed.

(i) 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.

) Analog instrument cluster: 20 mph (30 km/h)
— If you switch the ignition or the adaptive
cruise control system off, the set speed is
erased for safety reasons.
— When adaptive cruise control is switched
on, the ESC and ASR automatically switch
on.
— The system cannot be switched off or it may
be interrupted if the road exceeds the maxi-
mum possible grade for safe operation.
Predictive control
Applies to: vehicles with Audi adaptive cruise control and effi-
ciency assist
With predictive control, efficiency assist adapts
the set speed in adaptive cruise control @
=> page 131, fig. 107 based on detected speed
limits and the upcoming route. Once the system
no longer detects any incidents ahead, adaptive
cruise control will accelerate back up to the last
speed that the driver set. After switching on the
ignition, the availability of predictive control is
indicated by a message when the adaptive cruise
control is first activated.
Incident symbols indicate the situation to which
predictive control is reacting > page 129, Situa-
tion symbols.
Requirements
— Predictive control is switched on in the MMI
=> page 137.
— Adaptive cruise control is actively regulating
=> page 132.
— The system can only react to speed limits that
are 15 mph (20 km/h)” or higher.
Overriding control
The driver can override the predictive control to
the route ahead at any time by pressing the ac-
celerator or brake pedal. If the system changes
the vehicle speed to adapt to speed limits, you
can change the speed using the lever
=> page 132, fig. 110.
133

Driver assistance

handling with predictive control, for example the
speed for driving through curves.
@) Tips
Certain settings are automatically stored and
assigned to the remote control key being
used.
Applies to: vehicles with Audi adaptive cruise control
If or is displayed when there is a mal-
function, the adaptive cruise control or traffic
jam assist functions may be unavailable 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 119 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.
Please take over!

This message appears if the vehicle rolls back
when starting on a slight incline, even though the
systems are active. Press the brake pedal to pre-
vent the vehicle from rolling or starting to move.
Traffic jam assist
Applies to: vehicles with traffic jam assist

B8V-0692


Fig. 115 Turn signal lever: button for traffic jam assist and
Audi active lane assist
138
Traffic jam assist supports the driver when driv-
ing in traffic jams or in heavy traffic.
In a speed range under 40 mph (65 km/h), the
system can help to keep the vehicle within a lane
calculated by the system. Within the limits of the
system, the system controls the steering auto-
matically when adaptive cruise control is switch-
ed on. Since traffic jam assist is only an assist
system, the driver must always keep his or her
hands on the steering wheel and be ready to
steer. The driver can override the control at any
time by actively steering.
The system is designed for driving on express-
ways and highways.
Requirements for using traffic jam assist:
> The traffic jam assist is preselected in the MMI
settings: Select on the home screen: VEHICLE >
Driver assistance > Traffic jam assist.
> Adaptive cruise control must be switched on
and active > page 132.
If you open the Driver assist display in the on-
board computer => page 16, the indicator
light and the message Traffic jam assist will turn
on when a traffic jam is detected.
Activating or deactivating traffic jam assist
> To activate or deactivate traffic jam assist,
press the > fig. 115 button.
Always switch off traffic jam assist in the
following situations:
— When increased attention is needed from the
driver
— In construction zones
— In city driving
— On stretches of road with curves
—In unclear traffic situations such as at intersec-
tions or toll stations
— The turn signal was activated.
Indicator lights
Traffic jam assist is available.
B and B - Traffic jam assist is switched on.
Vehicles driving ahead were detected. Your vehi-
cle adapts while driving.

8W1012721BC
Driver assistance

B - Traffic jam assist switches off if the driver
does not take over steering after multiple driver
intervention requests. The system brakes the ve-
hicle until it is stationary.
Steering intervention request
If no steering activity is detected or the steering
power from the system is not sufficient, the driv-
er steering intervention request will alert the
driver using audio and visual signals, such as
or E. Take over the steering and keep your
hands on the steering wheel so that you will be
ready to steer at any time.
If the driver does not take over steering, adaptive
cruise control (with traffic jam assist) will be
switched off. The system brakes the vehicle until
it is stationary.*

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras page 117.
— The activated traffic jam assist is only an as-
sist system, and the driver is still responsi-
ble for controlling the vehicle. The driver is
especially responsible for braking, steering,
starting to drive, and controlling the speed
and the distance from other vehicles.
— Turn on the traffic jam assist only if the sur-
rounding conditions permit it. Always adapt
your driving style to the current visual,
weather, road, and traffic conditions.
— Switch the traffic jam assist off temporarily
when driving in turning lanes or highway ex-
its. This prevents the vehicle from accelerat-
ing to the stored speed when in these situa-
tions.

@) Tips
— Always keep your hands on the steering
wheel. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— Pay attention to applicable local regulations
relating to driving tasks, leaving space for
emergency vehicles, etc. The driver is always
responsible for following the laws that are
applicable in the location where the vehicle
is being operated.
— If traffic jam assist was deactivated through
the MMI, you can continue operating the
Audi active lane assist using the > fig. 115
button > page 141. The traffic jam assist
functions are no longer available.
— You are not necessarily guided to the center
of your lane.
Messages
Applies to: vehicles with traffic jam assist
if &. or |i is displayed when there is a mal-
function, the traffic jam assist functions may be
unavailable 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 119 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.
139

8W1012721BC
Driver assistance

Audi active lane assist/
lane departure warning
General information
Applies to: vehicles with Audi active lane assist
The Audi active lane assist/lane departure warn-
ing (called only Audi active lane assist in the vehi-
cle displays and in the information that follows in
this Owner's Manual) can detect lane marker
lines within the limits of the system. If you are
approaching a detected lane marker and it ap-
pears likely that you will leave the lane, the sys-
tem can warn you with corrective steering anda
steering wheel vibration, if necessary.

Applies to: vehicles with Audi active lane assist

Fig. 118 Instrument cluster: driver assistance display
The system functions in the speed range of ap-
proximately 40 mph - 155 mph (65 km/h -
250 km/h).
Applies to: vehicles with Audi adaptive cruise control and traf-
fic jam assist
If the conditions are met, traffic jam assist
switches on at speeds under approximately
40 mph (65 km/h) > page 138.

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.

Display and warning
The availability, readiness to provide warnings,
and the warnings are indicated with indicator
lights. Audi active lane assist is ready to provide
warnings if an object is detected on at least one
side of the lane where your vehicle is traveling.




Driver assistance Indicator lights Meaning
display Audi virtual | Instrument
cockpit cluster (analog)
@ White 71% 7% Audi active lane assist is activated, but is not
lines ready to provide warnings.
@ Green ex 7\ Audi active lane assist is activated and ready to
line(s) provide warnings.
@ Red 7X 7 \ Blinking Audi active lane assist will warn you with correc-
line tive steering before exiting the lane. If the system
must intervene for a long period of time, a mes-
sage will request the driver to drive in the center
of the lane. The steering wheel will also vibrate
lightly when exiting the lane.

If the system is switched on but is not ready to
provide warnings, one of the following systems
limits or situations could be the cause:
— 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.
141

Driver assistance

Steering intervention request
If Audi active lane assist 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 BE.
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, Audi ac-
tive lane assist will be switched off.
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, Audi active lane assist is
ready, and a lane change has been classified as
critical by lane assist due to vehicles traveling be-
side you or due to approaching vehicles, then a
noticeable corrective steering movement will oc-
cur briefly before exiting the lane. This will at-
tempt 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 117.
— 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.

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.
142
— The system does not provide any corrective
steering or steering wheel vibrations if it de-
tects that you are passing another vehicle.
— The image in the Driver assistance display
only appears if it was opened in the on-
board computer > page 16.
Scale Rie mela
Applies to: vehicles with Audi active lane assist

B8V-0692


Fig. 119 Turn signal lever: button for Audi active lane as-
sist
> To switch the system on or off, press the button
on the turn signal lever > fig. 119. The respec-
tive indicator light in the instrument cluster
will turn off or on.

ZA WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
Adjusting Audi active lane assist
Applies to: vehicles with Audi active lane assist

You can adjust Audi active lane assist individually.
The settings depend on the vehicle equipment.
> Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > Audi active lane
assist/Lane departure warning.
Possible settings:
— Steering correction - In the Late setting, the
steering correction will only occur shortly be-
fore a wheel crosses a detected lane marker
line. In the Early setting, steering correction
occurs continuously in order to help the driver
keep the vehicle in the center of the lane. If the >

8W1012721BC
Driver assistance

steering correction cannot be set, the steering
correction will function in the Late setting.
— Vibration warning - You can select if you would
also like to be warned using a vibration in the
steering wheel.
@) Tips
Certain settings are automatically stored and
assigned to the remote control key being
used.
Applies to: vehicles with Audi active lane assist
iff or is displayed when there is a malfunc-
tion, the active lane assist functions may be un-
available or limited.
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 119 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 city and Audi pre sense front
can detect an impending frontal impact and re-
act with warnings, braking interventions, and
preemptive safety measures for the vehicle oc-
cupants.
— Audi pre sense rear monitors the rear traffic
behind your vehicle and can react to an impend-
ing rear impact.
— 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.
Audi pre sense safety measures
Applies to: vehicles with Audi pre sense
Depending on the vehicle speed and the vehicle
equipment, the following functions may be initi-
ated in certain situations:
— Visual and audio warnings
— Reversible tensioning of safety belts
— Closing the windows and panoramic glass roof
— Adjusting the seats
— Other preemptive safety measures by individual
systems

ZA\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
G) Tips
— Depending on the risk situation that is de-
tected and the selected Audi drive select*
mode, not all preemptive safety measures
may be initiated under certain circumstan-
ces. Certain functions can be adjusted or
skipped if necessary.
— Audi pre sense may also be limited or un-
available under certain circumstances, for
example if:

— There are passengers with unfastened
safety belts
— After turning on the ignition, as long as
the FJ or indicator light is on.
— When driving in reverse.
— The front passenger's airbag is switched
off
— There is an airbag control module mal-
function

143

Driver assistance

— System functions may not be available if
the ESC is limited or switched off, or if
there is a malfunction.
NU ee elie
Applies to: vehicles with Audi pre sense basic
Audi pre sense basic is automatically active at
speeds of approximately 20 mph (30 km/h) and
higher. Audi pre sense basic can trigger preemp-
tive safety measures during emergency braking
and dangerous braking maneuvers as well as in
unstable driving situations, such as oversteering
or understeering > page 143, Audi pre sense
safety measures.
The message Audi pre sense Bo / (@) will warn
you about the danger.

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
ON Tee ee La)
Applies to: vehicles with Audi pre sense city

Within the limits of the system, Audi pre sense
city can warn about an impending front end colli-
sion and brake the vehicle strongly, if necessary.
The system uses the camera behind the wind-
shield and is available at speeds above approxi-
mately 6 mph (10 km/h).
Driving situations
The situations to which the system reacts de-
pends on the vehicle speed.
Automatic braking interventions are available at
vehicle speeds up to approximately 50 mph
(85 km/h).
Up to speeds of approximately 50 mph
(85 km/h), the system may react to the following
situations:
— Pedestrians are moving inside your lane
144
Up to speeds of approximately 155 mph
(250 km/h), the system may react to the follow-
ing situations:
—Avehicle driving ahead clearly applies the
brakes
— When approaching a vehicle ahead that is clear-
ly traveling more slowly
— When approaching a stationary vehicle
Prewarning
To warn about detected dangers, Audi pre
sense 1) / {@) will appear in the instrument clus-
ter and an audio signal will sound.
A brief application of the brakes
If a collision is imminent, there may be an acute
warning using a brief application of the brakes.
You
will also be warned about the danger by an
indicator in the instrument cluster display. You
may only be able to avoid a collision by swerving
or braking strongly.
Automatic braking force increase
If there is an impending collision and you are not
applying the brakes enough, the braking force
may be increased, depending on the situation.
Automatic braking
If you do not react to the acute warning, the sys-
tem may apply the brakes with strong braking
force within the limits of the system in order to
reduce the speed of impact in the event of a colli-
sion.
If the brakes are applied until the vehicle is sta-
tionary, © / Please take over! will appear in
the instrument cluster and you must take over
control of the vehicle.

ZA\ WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
— Audi pre sense cannot overcome natural
physical laws. It is a system designed to as-
sist and it cannot prevent a collision in every
circumstance. The driver must always inter-
vene. The driver is always responsible for
braking at the correct time. Do not let the >