2021 AUDI A4 ignition

Driver assistance

An additional indicator appears in the head-up
display*.
Changing the cruise control speed
Applies to: vehicles with cruise control system
Requirement: the system must be switched on.
> To increase or decrease the cruise control speed
in small increments, tap the lever up to the
first level toward @)/G) > page 127, fig. 105.
> To increase or decrease the cruise control speed
in larger increments, tap the lever up to the
second level toward @)/G).
> To increase or decrease the cruise control speed
continuously, tap and hold the lever at the first
or second level toward @)/G).
Overriding or deactivating the cruise
control speed
Applies to: vehicles with cruise control system
You can override or deactivate the cruise control
system. When you deactivate the system, your
cruise control speed will be stored and you can
resume that speed.
Requirement: the system must be switched on
and the regulated speed must be activated.
Overriding
> To temporarily override the cruise control
speed, press the accelerator pedal.
> To resume the stored regulated speed, remove
your foot from the accelerator pedal.
If you override the cruise control system for a
long period of time, the cruise control system
will be deactivated. The [Ud or [RM indicator
light will be displayed and the cruise control
speed will be saved.
Deactivating
> To deactivate the cruise control speed, press
the lever toward @) (not locked into place)
=> page 127, fig. 105, or
> Press the brake pedal.
128

ZA WARNING
Resting your foot on the accelerator pedal
could override the cruise control. This will pre-
vent braking interventions by the system.
See me Lai
Applies to: vehicles with cruise control system

When you switch the system off, the cruise con-
trol speed will be erased.
Requirement: the system must be switched on.
> To switch the system off, press the lever toward
@ (locked into place) > page 127, fig. 105, or
> Switch the ignition off.
Applies to: vehicles with cruise control system
Gir / 3) Speed control system: currently un-
available. See owner's manual
If the indicator light turns on and this message
appears, the cruise control system has been deac-
tivated. There is a temporary malfunction, for ex-
ample the brakes are overheating. Switch the
cruise control system on again later.
Efficiency assist
Applies to: vehicles with efficiency assist
Efficiency assist can assist the driver with predic-
tive information in order to reduce fuel consump-
tion. Depending on vehicle equipment, the sys-
tem may access data from the navigation system,
the camera behind the windshield, and the radar
sensors.
Adjusting the efficiency assist
You can adjust efficiency assist functions individ-
ually. The settings depend on the vehicle equip-
ment.
— Predictive messages > page 129.
— Predictive control > page 133.

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

Messages
If and a message with Predictive control is
displayed when there is a malfunction, the effi-
ciency 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 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.

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
— Pay attention to traffic and the area around
your vehicle when predictive control is
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.

@ 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

D_ In certain countries
134
applicable in the country where the vehicle
is being operated.
— Ifa speed limit is detected, the marking @
= page 131 of the set speed limit will be ad-
justed even if Audi adaptive cruise control is
not actively regulating.
— Control by the system depends on which
adaptive cruise control 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
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 Audi adaptive cruise control


B4M-0234


Fig. 111 Operating lever: setting the distance
If you adjust the speed, you must also change the
time gap to the vehicle driving ahead. The higher >

8W1012721BC
Driver assistance

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 117.
— If the message B& 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.
@ Tips
For safety reasons, the adaptive cruise control
will only be 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
Driver intervention request
Applies to: vehicles with Audi adaptive cruise control

al 3 3
S| | S| ee|

Fig. 114 Instrument cluster: request for driver interven-
tion
The request for driver intervention instructs you
to take over if the adaptive cruise control braking
function is not able to maintain a sufficient dis-
tance to the vehicle driving ahead. The system
will warn you of the hazard with the A indicator
light and the message Distance!. An audio signal
will also sound.

D_ This is not available in some countries.
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 117.

Adjusting adaptive cruise control
Applies to: vehicles with Audi adaptive cruise control

You can adjust the system individually. The set-
tings depend on the vehicle equipment.
> Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > Audi adaptive
cruise control.
Possible settings:
Applies to: vehicles without Audi drive select
Driving program - Depending on the selected
driving program and distance, the vehicle han-
dling will be adjusted from Sport to Moderate.
Applies to: vehicles with Audi drive select
Vehicle handling will be adjusted based on the
set distance and the selected Audi drive select
mode > page 110.
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 B
(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 - Adjustment based on the road ahead can
be adjusted. The setting influences vehicle
137

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


— Swerve assist does not react to pedestrians,
animals, crossing objects, and objects not
detected as vehicles.

Gi) Tips
— System functions may not be available if the
ESC is limited or switched off, or if there is a
malfunction.
— An indicator in the instrument cluster will
inform you when there is an intervention.
Turn assist
Applies to: vehicles with turn assist
When turning left), turn assist can help to re-
duce the risk of a collision with an oncoming ve-
hicle by using braking action to keep your vehicle
in its lane. The function is only available when
the turn signal is turned on and at speeds up to
approximately 6 mph (10 km/h).

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
— The turn assist does not react to pedes-
trians, animals, crossing objects, and ob-
jects not detected as vehicles.
@) Tips
— System functions may not be available if the
ESC is limited or switched off, or if there is a
malfunction.

— An indicator in the instrument cluster will
inform you when there is an intervention.
PNM lm e es)
Applies to: vehicles with Audi pre sense
You can switch Audi pre sense and the associated
systems on or off, or adjust them individually.
The adjustment options depend on the vehicle
equipment.

2) When making a right turn in countries with left-hand drive
vehicles.
2) Incertain countries
146
> Applies to MMI: Select on the home screen: VE-
HICLE > Driver assistance > Audi pre sense.
Setting the prewarning
You can adjust the warning time for the prewarn-
ing”) individually (Early/Medium/Late) or switch
the prewarning off.
Set the warning time for the early warning to
Early at first. If you feel that the prewarnings ap-
pear too early, then set the warning time to Me-
dium. The Late warning time should only be set
in special circumstances.
(i) Tips
— If Audi pre sense is switched off, it switches
on again automatically once the ignition is
switched on again).
— Switch Audi pre sense off when you are not
using public streets, when loading the vehi-
cle onto a vehicle carrier, train, ship, or oth-
er type of transportation, or when towing
the vehicle. This can help to prevent an un-
desired intervention from the Audi pre
sense system.
— Certain settings are automatically stored
and assigned to the remote control key be-
ing used.
Applies to: vehicles with Audi pre sense
re) or is displayed when there is a malfunc-
tion, the Audi pre sense 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. Bring the vehicle to a full stop,
switch the ignition off, and clean the area in front
of the sensors > page 119.
If the message still appears after switching the
ignition on again, have an authorized repair facili-
ty correct the malfunction as soon as possible.

Driver assistance


— The display may not appear on time when
vehicles are approaching or being passed
very quickly.


— If the window glass in the driver's door or
front passenger's door has been tinted, the
display in the exterior mirror may be incor-
rect.
— The coverage areas of the sensors > fig. 120
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
=> page 284.
OTe eed
Applies to: vehicles with side assist

You can adjust the side assist to your preferences.
The settings depend on the vehicle equipment.
> Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > Side assist.
Possible settings:
The system can be switched on and off. If the sys-
tem is switched on, the displays in the exterior
mirrors will turn on briefly each time the ignition
is switched on.
Brightness - Change the brightness only when
side assist is switched on, so that the selected
setting can be checked in the exterior mirror dis-
plays. Adjust the brightness to a level where the
display will not interfere with your view ahead.
Because the display brightness automatically
adapts to the ambient light, it may have already
been adjusted to the highest or lowest setting
during the automatic adaptation.
@ Tips
— If you switch side assist on or off, the exit
warning will also switch on or off.
— Certain settings are automatically stored
and assigned to the remote control key be-
ing used.
148
IY ett Tel -1
Applies to: vehicles with side assist
fg or Eg is displayed when there is a malfunc-
tion, the side assist and exit warning system
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 sensor area at the rear
corners of the vehicle > page 119, fig. 102 and
try to turn the systems 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.
Exit warning

Applies icles with exit warning system




Fig. 122 Front door: exit warning
General information
Within system limits, the exit warning system
can detect traffic approaching from behind such
as vehicles, and provide assistance based on this
information when you are exiting the vehicle >

8W1012721BC
Driver assistance

=> fig. 121. The system uses the data from the ra-
dar sensors at the rear corners of the vehicle.
Displays and warnings
If a door is opened while the vehicle is stationary,
the warning strip @ on that door and the display
@ on that side of the vehicle will blink if another
road user is detected in a critical situation, If an-
other road user that is classified as critical is ap-
proaching while a door is already open, the dis-
plays on that door will turn on.
The same messages apply for the exit warning
system and side assist > page 148.

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
— Always pay attention to traffic and to the
area around your vehicle. The exit warning
system does not replace the attention of the
vehicle occupants. The vehicle occupants are
always responsible for opening the doors
and exiting the vehicle.
— The exit warning system does not respond
to people and cannot warn you about every
type of approaching objects, such as cyclists.
Always monitor the traffic as well as the ve-
hicle's surroundings with direct eye contact.
— The display may not appear in time when
vehicles are approaching very quickly.
— The exit warning system does not react to
stationary objects or pedestrians.
— The exit warning system will not provide
alerts if your vehicle is pulled too far into
the parking space so that it is hidden by ad-
jacent vehicles.

@) Tips
— The exit warning is switched on or off by the
side assist warning > page 148.
— The exit warning system can be available for
up to approximately three minutes after un-
locking the vehicle and opening the door as
well as after switching off the ignition. Then
the displays flash briefly and the system
switches off.
— The display brightness for the exit warning
system cannot be adjusted.
—The coverage areas of the sensors > fig. 121
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
=> page 284.
149