2020 AUDI A3 sensor

8V2012721BK
Assist systems

strongly. The message Audi pre sense A
=> fig. 120 and a warning tone will warn you
about the danger.
If there is an impending collision with vehicles,
there will also be an acute warning in the form of
sharp braking. If you do not react to the acute
warning, pre sense front can brake with increas-
ing force within the limits of the system. This re-
duces the vehicle speed in the event of a colli-
sion.
Automatic deceleration
Depending on the speed, pre sense front can de-
celerate automatically shortly before a collision:
— if there are stationary vehicles when you are
traveling at speeds up to approximately 28
mph (45 km/h)
— if there are vehicles driving or stopped ahead
when you are traveling at speeds up to approxi-
mately 155 mph (250 km/h)
Automatic braking force increase
If pre sense front determines that you are not
braking strongly enough when a collision is immi-
nent, it can increase the braking force, depending
on the situation and speed:
— if there are stationary vehicles when you are
traveling at speeds up to approximately 50
mph (85 km/h)
— if there are vehicles driving or stopped ahead
when you are traveling at speeds up to approxi-
mately 155 mph (250 km/h)

— The system can deploy incorrectly due to
system-specific limits.
— Please note that the sensor does not always
detect all objects. This increases the risk of a
collision.
— Pre sense front does not react to vehicles
traveling toward you in the same lane, to
people, groups of people, animals, objects
that are crossing the road, or objects that
are difficult to detect > A\ in General infor-
mation on page 119.



ZA\ WARNING
Pre sense front may be restricted or not avail-
able in the following example situations:
— If there are other reflective objects nearby,
such as guard rails or vehicles
— When driving into a tunnel
— In heavy fog, rain, spray, or snow
—If the radar sensor is dirty, covered in ice,
damaged, or covered
— In curves
— If the ESC was switched off.


Z\ WARNING
Pre sense front cannot overcome the laws of
physics. It is a system designed to assist and
it cannot prevent a collision in every circum-
stance. The driver must always intervene. The
driver is always responsible for braking at the
correct time. Do not let the increased safety
provided tempt you into taking risks. This
could increase your risk of a collision.
— Loose objects can be thrown around the ve-
hicle interior during sudden driving or brak-
ing maneuvers, which increases the risk of
an accident. Store objects securely while
driving.

@) Note
The sensor can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. Pre sense front can be impaired by
this. Have an authorized Audi dealer or au-
thorized Audi Service Facility check their func-
tion.
(i) Tips
— You can cancel the braking with increasing
force that is initiated by the system by brak-
ing yourself, by accelerating noticeably or by
swerving.
— When driving in reverse, certain pre sense
front functions are switched off.
— System functions may not be available if the
ESC is limited or switched off, or if there is a
malfunction.
127

Assist systems

Settings in the Infotainment system
Applies to: vehicles with Audi pre sense

> Select in the Infotainment system: [MENU] but-
ton > Vehicle > left control button > Driver as-
sistance > Audi pre sense.

System - The pre sense functions can be switched
on and off.
If the system is switched off, it switches on again
automatically once the ignition is switched on
again.
Prewarning - The early warning can be switched
off permanently or the pre sense front warning
point can be set (Early/Medium/Late).
Set the warning time for the early warning to
Early at first. If this causes undesired early warn-
ings to appear, then set the warning time to Me-
dium. The Late warning time should only be set
in special circumstances.
@ Tips
If the system is switched off, it switches on
again automatically once the ignition is
switched on again.
Messages
Applies to: vehicles with Audi pre sense
& Audi pre sense: malfunction! Please contact
Service
This message appears when the pre sense func-
tion
is affected. For example, this could be
caused by a faulty sensor. If the message stays
on, drive immediately to an authorized Audi deal-
er or authorized Audi Service Facility to have the
malfunction corrected.
Audi pre sense: currently limited. Sensor
view limited due to surroundings.

This message appears if the sensor view is ob-
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor if necessary
=> page 119, fig. 109.

Audi pre sense: currently limited
This message appears if the ESC is restricted or
switched off, for example.
128

udi pre sense: currently limited. See own-
er's manual
This message appears when there is a temporary
failure in a subsystem, such as the ESC. If this
message appears repeatedly, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty to have the malfunction corrected.
Audi pre sense: emergency braking system
off
This message appears if the pre sense functions
are switched off through the Infotainment sys-
tem or if the system is not ready.
Audi active lane assist
Applies to: vehicles with Audi active lane assist
Active lane assist (lane departure warning) de-
tects lane marker lines within the limits of the
system using a camera in the windshield. If you
are approaching a detected lane marker line and
it appears likely that you will leave the lane, the
system will warn you with corrective steering.
You can override this steering at any time. If you
pass over a line, the steering wheel will vibrate
lightly. In order for this warning vibration to oc-
cur, it must first be switched on in the Infotain-
ment system. Active lane assist is ready for oper-
ation when the lane marker line is detected on at
least one side of the vehicle.
The system is designed for driving on express-
ways and highways and therefore only activates
at speeds above approximately 40 mph (65
km/h).
Applies to: vehicles with Audi side assist
If you activate a turn signal when active lane as-
sist is ready and it classifies a lane change as crit-
ical because of vehicles traveling alongside you or
approaching you, there will be noticeable correc-
tive steering shortly before you leave the lane.
This will attempt to keep your vehicle in the lane.
Applies to: vehicles without Audi side assist
The system will not warn you before crossing a
lane marker line if you have activated the turn >

8V2012721BK
Assist systems

— The camera field of view > page 129, fig. 122 is
dirty or covered in ice. Clean this area on the
windshield.
— The camera field of view is fogged over. Wait
until the fog has cleared before switching the
active lane assist on again.
— The system has been unable to detect the lanes
for an extended period of time due to road con-
ditions. Switch active lane assist back on when
the lines are more visible.
BB audi active lane assist: currently unavailable
There is a temporary active lane assist malfunc-
tion. Try switching the active lane assist on again
later.
HB audi active lane assist: Please take over
steering!
This message appears if you are not steering by
yourself. Active lane assist is activated, but is not
ready to provide warnings.

ZX WARNING
Note that messages may be delayed or not
displayed on vehicles with accessories mount-
ed on the steering wheel, such as a steering
wheel spinner knob. Always keep your hands
on the steering wheel.
Setting the vibration warning
Applies to: vehicles with Audi active lane assist

You can adjust individual Audi active lane assist
settings in the Infotainment system.

MENU > Select in the Infotainment system: but-
ton > Vehicle > left control button > Driver as-
sistance > Audi active lane assist.

Vibration warning
You can switch the additional vibration warning
in the steering wheel on or off.

-Z\ WARNING
With the vibration warning switched off, there
will also be no visual warning in the instru-
ment cluster display when crossing a lane
marker line.

@) Tips
In certain markets: certain settings are stored
automatically and assigned to the remote
control key in use.
Audi side assist
Applies to: vehicles with Audi side assist

B4H-0761


B8V-0059


Fig. 125 Display on the exterior mirror
Side assist (lane change assist) helps you monitor
your blind spot and traffic behind your vehicle.
Within the limits of the system, it warns you
about vehicles that are coming closer or that are
traveling with you within sensor range @)
> fig. 124. If a lane change is classified as criti-
cal, the display @) in the exterior mirror turns on
> fig. 125.
The display in the left exterior mirror provides as-
sistance when making a lane change to the left,
while the display in the right exterior mirror pro-
vides assistance when making a lane change to
the right.
Information stage
As long as you do not activate the turn signal,
side assist informs you about vehicles that are
131
>

Assist systems

detected and classified as critical. The display in
the mirror turns on, but is dim.
The display remains dim in the information stage
so that your view toward the front is not distur-
bed.
Warning stage
If the display in a mirror blinks brightly when you
activate a turn signal, side assist is warning you
about detected vehicles that it has classified as
critical. If this happens, check traffic by glancing
in the exterior mirrors and over your shoulder
=> A\ in General information on page 133.
Applies to: vehicles with Audi active lane assist
The display in the mirror can also blink if you
have not activated a turn signal: if you are ap-
proaching a detected lane marker line and it ap-
pears you will be leaving the lane, side assist will
warn you about detected vehicles that it has clas-
sified as critical.
iG) Tips
You can adjust the brightness on of the dis-
play on the rearview mirror > page 133.
General information
Applies to: vehicles with Audi side assist


B8U-0342|


Fig. 126 Driving situations
132


B8U-0348

Fig. 127 Rear of the vehicle: position of the sensors
Side assist functions at speeds above approxi-
mately 9 mph (15 km/h).
@ Approaching vehicles
In certain cases, a vehicle will be classified as
critical for a lane change even if it is still some-
what far away. The faster a vehicle approaches,
the sooner the display in the outside mirror will
turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior mirror if they are classified as critical for
a lane change. All vehicles detected by side assist
are indicated by the time they enter your “blind
spot”,
at the latest.
@ Vehicles you are passing
If you slowly pass a vehicle that side assist has
detected (the difference in speed between the ve-
hicle and your vehicle is less than approximately
9 mph (15 km/h)), the display in the exterior mir-
ror turns on as soon as the vehicle enters your
blind spot.
The display will not turn on if you quickly pass a
vehicle that side assist has detected (the differ-
ence in speed is greater than approximately 9
mph (15 km/h)).
Functional limitations
The radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width. In some situations, the display
in the exterior mirror may turn on even though
there is no vehicle located in the area that is criti-
cal for a lane change. For example:

Assist systems

— If the lanes are narrow or if you are driving on display in the exterior mirror may be incor-
the edge of your lane. If this is the case, the rect.
system may have detected a vehicle in another —For an explanation on conformity with the
lane that is not adjacent to your current lane. FCC regulations in the United States and the
— If you are driving through a curve. Side assist Industry Canada regulations, see
may react to a vehicle that is one lane over from => page 377.
the adjacent lane.
— If side assist reacts to other objects (such as Switching on and off
high or displaced guard rails). Applies to: vehicles with Audi side assist
— In poor weather conditions. The side assist
Th te b itched on/off in the Info- Furiedionsara limited. e system can be switched on/off in the Info
tainment system.
Do not cover the radar sensors > fig. 127 with
stickers, deposits, bicycle wheels or other ob-
jects, because they will impair the function. For
information on cleaning, see > page 342.
If the system is activated, the displays in the ex-
terior mirrors will turn on briefly when the igni-
tion is switched on.
> Select in the Infotainment system: [MENU] but-
AN WARNING ton > Vehicle > left control button > Driver as-
— Always pay attention to traffic and to the sistance > Audi side assist. Off switches the
area around your vehicle. Side assist cannot system off.
replace a driver's attention. The driver alone
is always responsible for lane changes and Setting the display brightness
similar driving maneuvers. Applies to: vehicles with Audi side assist
—Insome situations, the system may not
The display bright be adjusted in the In-
function or its function may be limited. For Meee ea anor eee ee oN et


exainple: fotainment system.
—If vehicles are approaching or being left > Select in the Infotainment system: [MENU] but-
behind very quickly. The display may not ton > Vehicle > left control button > Driver as-
turn on in time. sistance > Audi side assist.
8V2012721BK
— In poor weather conditions such as heavy
rain, snow or heavy mist.
— On very wide lanes, in tight curves, or if
there is a rise in the road surface. Vehicles
in the adjacent lane may not be detected
because they are outside of the sensor

range.

() Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. This can impair the system. Have
an authorized Audi dealer or authorized Audi
Service Facility check their function.
@ Tips
— If the window glass in the driver's door or
front passenger's door has been tinted, the
> Adjust the brightness to a level where the dis-
play in the information stage will not disrupt
your view ahead. If you change the brightness,
the display in the exterior mirror will briefly
show the brightness level in the information
stage.
The brightness of the warning stage is linked to
the brightness in the information stage and is ad-
justed along with the information stage.
The display brightness adjusts automatically to
the brightness of the surroundings, both in the
information and in the warning stage. In very
dark or very bright surroundings, the automatic
adjustment will set the display to the minimum
or maximum level. In such cases, you may notice
no change when adjusting the brightness, or the
change may only be noticeable once the sur-
roundings change.
133

Assist systems

G) Tips
— Side assist is not active while you are mak-
ing the adjustment.
— Your settings are automatically stored and
assigned to the remote control key being
used.
RET oa ar lie 4
Applies to: vehicles with rear cross-traffic assist
1. S 2
= + oO

Fig. 128 Example display

Fig. 129 Infotainment system: rear cross-traffic assist dis-
play
Activating rear cross-traffic assist
The rear cross-traffic assist is activated automati-
cally if you turn on the parking aid > page 136 or
shift into reverse gear.
The rear cross-traffic assist can warn the driver of
a potential collision with approaching cross-traf-
fic when driving in reverse at speeds up to ap-
proximately 7 mph (12 km/h). Within its limits,
the system monitors the areas behind and next
to the vehicle using the radar sensors when leav-
ing a parking space > page 132, fig. 127. Moving
objects that are approaching, such as cars, are
detected > fig. 128.
If the system detects critical cross traffic when
backing out of a parking space, it will react as fol-
lows:
134
— Visual indicator: an indicator appears in the In-
fotainment system display with a red arrow
symbol. The arrow points in the direction from
which the object is approaching > fig. 129.
— Audible warning signal: a continuous tone may
sound as an additional indicator when driving in
reverse.
— Automatic brake activation: a brief activation
of the brakes may also warn you of a potential
collision with an approaching object.
The audible warning signal and the automatic
brake activation occur only when driving in re-
verse.

iN WARNING
—The rear cross-traffic assist is an assist sys-
tem and cannot prevent a collision by itself.
The driver must always intervene. The driver
is always responsible for braking at the cor-
rect
time.
— Please note that the rear cross-traffic assist
may activate the brakes unexpectedly. Se-
cure any cargo that you are transporting to
reduce the risk of damage or injury.
— An additional brake activation may be trig-
gered within 10 seconds after an automatic
brake activation.
—If there is an acoustic warning signal from
the rear cross-traffic assist, then the parking
system may not warn you of detected obsta-
cles under certain circumstances.
— The view of the radar sensors may be im-
paired by leaves, snow, heavy spray or dirt.
Clean the area in front of the sensors
=> page 132, fig. 127.

ZA WARNING
— The rear cross-traffic assist will not provide
alerts about people and cannot warn you
about every type of approaching objects,
such as cyclists. Always monitor the traffic
as well as the vehicle's surroundings with di-
rect eye contact.
— The rear cross-traffic assist will not provide
alerts if your vehicle is parallel or diagonally

8V2012721BK
Assist systems


parked or if your vehicle is pulled too far in-
to the parking space so that it is hidden by
adjacent vehicles.

@) Note
Also read the information in >@ in General
information on page 133.
@ Tips
— You can cancel the automatic brake activa-
tion with increasing braking force if you ap-
ply the brakes yourself or accelerate consid-
erably.
—In some situations, rear cross-traffic assist
may warn you even if there is no cross traffic
in a critical area, for example when backing
into a parking space or maneuvering.
— The rear cross-traffic assist also switches off
when you switch off the ESC.
— For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see
=> page 377.
Applies to: vehicles with Audi side assist
& Audi side assist: malfunction! Please contact
Service
The system cannot guarantee that it will detect
vehicles correctly and it has switched off. The
sensors have been moved or are faulty. Have the
system checked by an authorized Audi dealer or
authorized Audi Service Facility soon.
Audi side assist: currently unavailable. No
sensor view
Audi side assist: currently unavailable. Sen-
sor vision restricted due to surroundings. See
owner's manual
The radar sensor vision is impaired. Do not cover
the area in front of the sensors with bike wheels,
stickers, dirt or other objects. Clean the area cov-
ering the sensors, if necessary > page 132,
fig. 127.
Audi side assist: currently unavailable
Side assist cannot be switched on at this time be-
cause there is a malfunction (for example, the
battery charge level may be too low).
Rear parking aid: obstacle detection restrict-
ed
The rear cross-traffic assist is not available. Ei-
ther the ESC is switched off, or the radar sensors
may be covered by a bike rack, stickers, leaves,
snow or other objects. Switch the ESC on, or
clean the area in front of the sensors if necessary
= page 132, fig. 127. If this message continues
to be displayed, drive immediately to an author-
ized Audi dealer or authorized Audi Service Facili-
ty to have the malfunction repaired.
135

Parking aid

Parking aid
General information
Applies to: vehicles with parking system plus/rearview cam-
era/park assist
Depending on your vehicle's equipment, various
parking aids will help you when parking and ma-
neuvering.
The parking system plus assists you when park-
ing by audibly and visually indicating objects de-
tected in front of and behind the vehicle
=> page 137.
The rearview camera shows the area behind the
vehicle in the Infotainment system display. The
lines in the rearview camera image help you to
park or maneuver > page 138.
Park assist helps you to locate suitable parking
spaces when parallel or perpendicular parking,
and also helps when leaving a parallel parking
space > page 140.

Z\ WARNING
— Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The parking system cannot replace
the driver's attention. The driver is always
responsible when entering or exiting a park-
ing space and during similar maneuvers.
— Please note that some surfaces, such as
clothing, are not detected by the system.
— Sensors and cameras have blind spots in
which people and objects cannot be detect-
ed. Be especially cautious of small children
and animals.
— Always pay attention to the area around the
vehicle - using the rearview mirror, too.
— The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody. The park-
ing system may be impaired as a result.
Have an authorized Audi dealer or author-
ized Audi Service Facility check their func-
tion.

136
@) Note
— Some objects are not detected or displayed
by the system under certain circumstances:
— objects such as barrier chains, trailer draw
bars, vertical poles or fences
— objects above the sensors such as wall ex-
tensions
— objects with certain surfaces or structures
such as chain link fences or powder snow
— If you continue driving closer to a low ob-
ject, it may disappear from the sensor
range. Note that you will no Longer be
warned about this obstacle.
— Maintain enough distance from the curb to
reduce the risk of damage to the rims.
@) Tips
— The system may provide a warning even
though there are no obstacles in the cover-
age area in some situations, such as:
— certain road surfaces or when there is tall
grass
— external ultrasonic sources such as from
cleaning vehicles
—in heavy rain, snow, or thick vehicle ex-
haust
— We recommend that you practice parking in
a traffic-free location or parking lot to be-
come familiar with the system. Practice
parking in good light and weather condi-
tions.
— You can change the volume and pitch of the
signals as well as the display > page 144.
— What appears in the infotainment display is
somewhat time-delayed.
— The sensors must be kept clean and free of
snow and ice for the parking aid to operate.