2021 AUDI Q2 sensor

Driver assist systems
© Note
The distance may be below the warning
threshold for a short time when overtaking or
approaching a slower vehicle quickly from be­

hind.
In this case, no warning will be given. A
warning is only given if the distance is consis­
tently below the threshold.
Driver messages
Applies to: vehicles with Audi adaptive cruise control

El
ACC:
not available
The system cannot detect vehicles reliably and
will be deactivated. The sensor is out of align­
ment or defective. Drive to a qualified workshop
and have the fault rectified.

EH
ACC:
currently unavailable. No sensor vision

Eo3
ACC:
currently unavailable. Sensor view re­
stricted due to surroundings. See owner's
man­

ual
These messages appear if the radar sensor vision
is impaired, e.g. by leaves, snow, heavy road
spray or dirt. Clean the sensor
^>page
112,
Fig. 101.

E3
ACC:
currently unavailable. Speed too low
Manual gearbox: This message appears if the cur­
rent speed is too low for
ACC
mode. You cannot
store speed settings below 30 km/h. The cruise
control system switches off if the speed falls
be­

low 20 km/h.

Esi
ACC:
available from 2nd gear up
Manual gearbox: The adaptive cruise control only
operates in 2nd gear or higher.

B
ACC:
currently unavailable. Gradient too
steep
The maximum possible road gradient for safe op­
eration of the adaptive cruise control has been

exceeded.
The adaptive cruise control cannot be
switched on.
ffl
Ea3
ACC:
only
available in D, S or M < o

PI
Automatic gearbox: Move the selector lever to

g
position D/S or M. <
00

Eol
ACC:
clutch pedal pressed
Automatic gearbox: Cruise control mode is deac­
tivated if the clutch pedal is pressed for
a
rela­
tively long period.

Bf
ACC:
engine speed
Manual gearbox: This message appears if the
driver does not change gear in time when the
adaptive cruise control accelerates or brakes the
vehicle and the engine speed is too high or low as
a result. The adaptive cruise control is switched

off.

EJACC:
parking brake applied
The adaptive cruise control system is deactivated
if the parking brake is applied. The adaptive
cruise control will be available again when the
parking brake is released.

Eo3
ACC:
currently unavailable. Stabilisation
control input
This message appears if the electronic stabilisa­
tion control (ESC) intervenes. In this case, the
adaptive cruise control will automatically be
switched off.

Eo3 ACC
off: manual control!
This message appears if the vehicLe rolls back­
wards when driving away on a slight gradient,
even though the adaptive cruise control is active.
Press the brake pedal to prevent the vehicle from
rolling back or colliding with an object behind.

EM
ACC:
currently unavailable. Park assist ac­
tive
The systems are switched off when the park as­
sist* is active. The systems will be available again
when the parking manoeuvre is finished.
Distance warning: fault. Please contact work­
shop
The system cannot detect vehicles reliably and
will be deactivated. The radar sensor is out of
alignment or defective. Drive to a qualified work­
shop and have the fault rectified.
Distance warning: currently unavailable. Sensor
view restricted due to surroundings •
119

Driver assist systems
This message appears if the radar sensor vision is

impaired,
e.g. by leaves, snow, heavy road spray
or dirt. Clean the sensor
<^>page
112, Fig. 101.
Distance warning: currently unavailable. See
owner's manual
This driver message will appear if the system
fails temporarily. If the fault occurs repeatedly,
drive to a qualified workshop and have the fauLt

rectified.

Fasten seat belt
The system is not fully available when the driver's
seat belt is unfastened.
Stationary object ahead
This message appears if
you
try to switch on the
system when a stationary object is located imme­
diately in front of your car.
Door open
The system is not available when the vehicle is
stationary and the driver's door is open.
Audi pre sense
Introduction
Applies to: vehicles with Audi pre sense
The pre sense functions can take action to pro­
tect the vehicle occupants and other road users in
certain hazardous conditions within the system

limits.

- Because the different on-board systems are

networked,
pre sense basic can detect critical
situations and take preventive action to protect
the occupants.
- The pre sense front uses the data of the radar
sensor to calculate the probability of an
acci­

dent
opage
112. It can detect an impending
collision with vehicles or
pedestrians1^
(subject
to general system limitations). In this case, the
system warns the driver visually, acoustically

and,
if necessary, with a short, sharp brake ap­

plication.
If necessary, it can initiate a partial or

fuLl
brake application in order to reduce the im­
pact speed or, in certain circumstances, to
avoid a collision. In conjunction with pre sense
basic, the reversible tensioners on the front
seat belts are also applied if necessary. Pre
sense front is active even when the adaptive
cruise control* is switched off.
Please observe the general safety warnings

•=>
A in General notes on page 112.
© Note
- Certain pre sense functions are deactivated
when reversing.
- The functions of the pre sense system may
also be unavailable if
a
fault develops in the

ESC
system or airbag control unit.
- Please note that, if the front passenger's
airbag has been deactivated, the reversible
belt tensioner on the passenger's side will
be deactivated as
well.

- Switch off pre sense on private roads and
while the vehicle is being loaded onto a car
transporter, train or ferry, etc. This prevents
the pre sense system from taking action in
an inappropriate situation.
Audi pre sense basic
Description
Applies to: vehicles with Audi pre sense basic
The pre sense basic functions are activated at
speeds above approximately 30 km/h.
The system can activate the following functions
in certain situations:
- Seat belt tensioning (e.g. during hard braking):
The seat belts on the front seats have reversi­
ble tensioners. Provided an accident does not
occur, the belts are loosened again slightly and
kept ready for activation.
- Initiation of the closure process for the
win­

dows and panorama sun roof* (e.g. if the
vehi­

cLe understeers or oversteers).
Audi drive select*: the activation threshold
dif­

fers according to the mode selected.

x)
Not available on vehicles for some markets.
120

Driver assist systems
provided tempt you into taking any risks when
driving - this can cause accidents.
- Please note that pre sense front can give
warnings or apply the brakes unexpectedly.
Always secure your luggage to prevent dam­
age and possible injury.
- Due to inherent system limitations, false ac­
tivation of the system is possible.
- Please note that the sensor is not always
able to detect all objects which may repre­
sent a potential hazard - risk of accident!
- Pre sense front does not react to the follow­

ing:
oncoming traffic in the same lane, sta­
tionary or stopped persons, pedestrians
crossing the road at an angle, groups of
people, animals, or objects that are hard to

recognise •=>
A in General notes on
page 112.
A WARNING
The pre sense front functions may be restric­
ted or unavailable in situations such as the

following:

- If objects such as crash barriers or other
vehicles are reflecting additional light.
- At tunnel entrances.
- In heavy fog,
rain,
road spray or snow.
- If the radar sensor is dirty, frosted, dam­
aged or covered.
- When driving through a corner.
-Applies to: front-wheel drive vehicles: If the
ESC system has been partially or fully deac­

tivated.

© CAUTION
Impacts or damage to the bumper, wheel
arches or underbody can cause misalignment
of the sensor. This can impair the function of
the pre sense front system. Have the systems
checked by a
quaLified
workshop.
© Note
-The automatic brake application with in­
creasing brake force can be cancelled by ap­
plying the brakes yourself or by pressing the
accelerator firmly or by taking evasive ac­

tion.

- Applies to: front-wheel drive vehicles: Cer­
tain pre sense front functions are deactiva­
ted when the ESC
offroad
mode is switched
on and when reversing.
- Applies to: front-wheel drive vehicles: The
pre sense is deactivated if you restrict or
switch off the ESC
^>page
146.
Settings on the infotainment system
Applies to: vehicles with Audi pre sense front/Audi adaptive
cruise control

•
Select the following on the infotainment sys­

tem:
|MENU|
button > Car > left control button
> Driver assist > Audi pre sense.
System - The pre sense functions can be switched
on/off.
Advance
warning15
- You can switch the advance
warning off or set the warning time for pre sense
front (early/medium/late).
Start by setting the advance warning to early. If
you then find that the system warns you earlier
than desired, you can set the advance warning to

medium.
The advance warning should be set to
late only in exceptional cases, such as during very
dynamic driving.
If a system or the advance warning function is
switched off, it will be automatically activated
again the next time you switch on the
ignition15.

Driver messages
Applies to: vehicles with Audi pre sense
Audi pre sense: fault. Please contact work­
shop
This message appears if the functions of the pre
sense system are impaired. An impairment can
occur, for example, if a sensor fails. If the mes­
sage remains displayed permanently, drive to a
qualified workshop soon and have the fault
recti­

fied.
•

x)
Not available on vehicles for some markets.
122

Driver assist systems

H
Audi pre sense: currently restricted. Sensor
view restricted due to surroundings.
This message appears if the radar sensor vision is

impaired,
e.g. by leaves, snow, heavy road spray
or dirt. If necessary, clean the sensor

*$
page 112, Fig. 101.

[^
Audi pre sense: currently restricted
This message appears in certain situations, e.g.
when the ESC is partially or fully deactivated.

Q
Audi pre sense: currently restricted. See
owner's manual
Applies to: vehicles with Audi side assist
If
you
operate the turn signals while the active
lane assist and side assist are active, the steering
will be corrected just before you cross the lane
demarcation if the side assist detects vehicles ap­
proaching quickly or travelling at about the same
speed as your own vehicle and judges the situa­
tion to be critical. This intervention is intended to
keep the vehicle in the Lane.
Applies to: vehicles without Audi side assist
The system does not warn you if
you
operate the
turn signal before crossing a Lane marking. In
this case, it assumes that you intend to change

lanes.

Applies to: vehicles with traffic jam assist
The traffic jam assist can be activated at speeds
below approximately 65 km/h if the correspond­
ing conditions have been met
^page
117.
•
123
This driver message appears if one or more sub­
systems, such as the
ESC,
fails temporarily. If the
message is displayed several times, drive to a
qualified workshop and have the fault rectified.

[g]
Audi pre sense: emergency braking system

off

This message appears if the functions of the pre
sense system are deactivated via the infotain­
ment system or if the system is not available.
Audi active Lane assist
Description
Applies to: vehicles with Audi active lane assist
The active lane assist (lane departure warning
feature) uses a camera in the windscreen to de­
tect lane markings (subject to general system
limitations). If
you
approach one of the detected
lane markings, the system corrects the steering
to warn you that the vehicle might be about to
cross one of the markings. You can override this
steering input at any time. The steering wheel vi­
brates slightly if
you
cross a lane marking. The vi­
bration warning must be activated beforehand on
the infotainment system. The active lane assist is
functional when it detects a demarcation line on
at least one side of the lane in which you are driv­

ing.

As the system is designed for driving on motor­
ways and other major roads, it is only active

§
above a speed of about 65 km/h (may vary in dif-

£
ferent export markets).
r\i

.-H

00
A WARNING
- The system initiates a corrective steering in­
put to warn the driver that the vehicle is
about to leave the lane. As the driver you
are always responsible for staying in your
own lane.
- The system can assist you to keep the
vehi­

cle in the lane, however it is not capable of
driving on its own. Never take your hands
off the steering wheel.
- In certain situations, e.g. during heavy brak­

ing,
the system may not correct the steer­

ing.

- In certain circumstances, not all of the lane
markings may be detected by the camera. A
corrective steering input can only be
initi­

ated if the system detects a lane marking on
the side in question.
- Variations in the road surface or objects on
the road may be misinterpreted as lane
markings. In this case, the steering may be
corrected unexpectedly or not at all.
- The camera's view might be obstructed, for
example by vehicles travelling in front,
rain,

snow, a lot of water on the
road,
adverse
light
or
dirt on the windscreen. If this hap­

pens,
the active lane assist may not detect

Driver assist systems

CO

< o rN
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rN
t-H
o < 00
- The purpose of the emergency assist is to
assist the driver and to help prevent an
acci­

dent in case of an emergency. The protec­
tion provided by the system is still subject
to the prevailing physical limits - risk of
acci­

dent!
- Due to inherent system Limitations, false ac­
tivation of the system is possible - risk of ac­
cident! Interrupt the emergency assist if
necessary.
- Please observe the warnings for the adap­
tive cruise control
•=> A
in General notes on
page 112.
If the emergency assist is deployed, it will not
be available again until the next time the
igni­

tion is switched on.
Audi side assist
Description
Applies to: vehicles with Audi side assist

/——s—a~-^r—"x.

o5

s

• x •
CO

Fig.
117 Area covered by the radar sensors

Fig.
118 Warning lamp on exterior mirror
The side assist function
(lane
change assist fea­
ture) assists the driver in monitoring following
traffic and the blind spots on both sides of the
car. Within certain system limits, it warns you if
it detects vehicles approaching quickly or travel­
ling at about the same speed as your own vehicLe
in the area covered by the sensors
©^Fig.
117.
If it judges a lane change to be critical, the warn­
ing Lamp (5) on the exterior mirror lights up

^Fig.
118.
The warning lamp on the left-hand mirror assists
the driver when changing lane towards the left
and the warning Lamp on the right-hand mirror
assists the driver when changing lane towards
the right.
Information mode
As Long as you do not operate the turn signal, the
side assist will merely inform you of the presence
of vehicles that it has detected and judges to be

critical.
In this case, the warning lamp on the
rel­

evant exterior mirror will Light up at low intensi­
ty.
The intensity of the warning lamp in this infor­
mation mode is kept relatively low, so that it
does not distract you while you are looking at the
road in front.
Warning mode
If
you
operate the turn signal and the warning
lamp on the relevant exterior mirror flashes
brightly, the side assist is warning you of what it
judges to be a critical vehicle. Please check the
situation in the exterior mirror and by looking
back over your shoulder
•=> A
in General notes on
page 128.
Applies to: vehicles with Audi active lane assist
The warning lamp on the relevant mirror may al­
so flash when you have not operated the turn
sig­

nal.
If
you
come close to a detected Lane marking
and are in danger of Leaving your lane, the side
assist warns you of what
it
judges to be a critical
vehicle.
®
Not

You can adjust the brightness of the warning
lamp on the exterior mirror
^page
129.
127

Driver assist systems
General notes
Applies to: vehicles with Audi side assist

•IB

in—

Fig.
119 Driving situations

Fig.
120 Rear of
vehicle:
Location of the sensors
The side assist is active above a speed of
about 15 km/h.

0
Vehicles approaching from behind
In certain cases, a vehicle
is
judged to be critical
in the event of
a
lane change even if it is still
some distance away. The faster a vehicle ap­
proaches, the earlier the warning will appear on
the exterior mirror.
(2) Vehicles moving at a similar speed
The warning lamp in the relevant exterior mirror
will warn you of vehicles that are moving with the
flow of traffic at about the same speed as you if
they are judged to be critical in the event of
a

lane change. In all cases, the side assist will give
a warning for the vehicles it has detected at the
latest when they enter the "blind spot".

(§)
Other vehicles being overtaken
When you are overtaking another vehicle slowly,
with a speed differential of Less than about
15 km/h, the warning lamp in the exterior mirror
will light up as soon as the other vehicle enters
your blind spot.
If
you
are overtaking another vehicle quickly,
with a speed differential of more than about
15 km/h, the warning lamp will not light up.
System limitations
The radar sensors are designed for normal lane
widths and monitor the lanes immediately to the
left and right of your vehicle. In certain situations
the warning lamp on one of the exterior mirrors
may light up even if no vehicle is travelling in an
area that could be critical in the event of
a
lane
change. For example:
- When you are travelling in a narrow Lane or
when you are not travelling in the centre of the

lane.
In this case the system may monitor an­
other lane and register a vehicle that is nor in
fact travelling in an adjacent lane.
- When you are driving into a bend. The side as­
sist may react to a vehicle two lanes away.
- If the system detects other objects (such as
crash barriers, etc).
- In poor weather conditions. The functionality of
the side assist is then restricted.
The radar sensors
^>Fig.
120 must not be ob­
structed by stickers, bicycle racks, deposits or any
other substances which could impair the function
of the system. The side assist must not be used
when towing a trailer. For notes on cleaning,
please refer to
^>page
312.
WARNING
- Always watch the road and the area sur­
rounding the vehicle. The side assist feature
is not
a
substitute for the full concentration
of the driver. The driver is always responsi­
ble for the safety of Lane changes and other
manoeuvres.
128

Driver assist systems

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00
- In certain situations, the system may not
function properly, or the functionality of the
system may be restricted. For example:
- If other vehicles are approaching very
quickly, or if
you
are overtaking other
vehicles quickly. The warning lamp may
not light up
intime.

- In poor weather conditions, such as heavy

rain,
snow or road spray.
- If
you
are travelling in very wide lanes, in
tight bends or over crests. The system
may not detect vehicles in the adjacent
lane because they are outside the area
covered by the sensors.
© CAUTION
Impacts or damage to the bumper, wheel
arches or underbody can cause misalignment
of the sensors. This can impair the functional­
ity of the system. Have the systems checked
by
a
qualified workshop.
The warning lamps on the exterior mirrors
may not be properly visible if tinted foil is af­
fixed to the side windows on the driver's or
passenger's side.
Switching on/off
Applies to: vehicles with Audi side assist

The
system can be switched on and off
on
the in­
fotainment system.
The warning Lamps in the exterior mirrors light
up briefly each time the ignition is switched on to
indicate that the system is activated.

•
Select the following on the infotainment sys­

tem:
|MENU|
button > Car
>
left control button
> Driver assist
>
Audi side assist. SeLect off to
switch off the system.
Adjusting brightness of warning lamp
Applies to: vehicles with Audi side assist

The
brightness of the warning lamp can be ad­
justed on the infotainment system.

•
Select the following on the infotainment sys­

tem:
|MENU|
button > Car
>
left controL button
> Driver assist
>
Audi side assist.
The brightness of the warning lamp in both the
information and warning modes is regulated au­
tomatically according to the ambient Light Level.
If
you
are in very dark
or
very Light surroundings
when you adjust the brightness of the warning

lamp,
the automatic brightness control may al­
ready have reached the lowest or the brightest

setting.
In such a case it is possible
that
you
won't notice a difference while you are adjusting
the brightness or that you will only notice it once
the light surroundings have changed.
Please adjust the brightness of the warning lamp
for the information mode so that it does not dis­
tract you while you are looking at the road in
front. When you change the brightness, the
warning lamp on the exterior mirror will light up
briefly with the intensity set for the information

mode.
The intensity of the lamp in the warning
mode is Linked to the intensity in the information
mode and is adjusted automatically.
© Note
- The side assist is not active while the set­
tings are being adjusted.
- Your personal settings are stored automati­
cally and assigned to the remote control key
which is being used.
129

Driver assist systems
Rear cross-traffic assist
Applies to: vehicles with rear cross-traffic assist

Fig.
121 Example diagram

Fig.
122 Infotainment: Rear cross-traffic assist display
While you are reversing, the rear cross-traffic as­
sist can warn against a potential collision with
traffic approaching perpendicular to the rear of
the vehicle. The system uses the radar sensors

^page
128, Fig. 120 to monitor the area behind
and to the side of the vehicle when you are leav­
ing a parking space. Where possible, it detects
objects, such as cars, as they approach the
vehi­

cle
of/g.
121.
If critical cross-traffic is detected when reversing
out of a parking space, the system reacts as
fol­

lows:

- Graphic display: A graphic with a red arrow
symbol appears on the infotainment display.
The arrow indicates the direction from which
the object is approaching
^>Fig.
122.
- Warning tone: A tone may sound continuously
as an additional signal when you are reversing.
-Automatic
brake
jolt: A short sharp application
of the brakes may also warn against a potential
collision with an approaching object.
Requirements for the use of the rear cross-
traffic assist:
-The parking aid must be switched on

^>page
134.
- Reverse gear must be engaged.
- The speed must not be higher than approxi­
mately 12 km/h.

A
WARNING
- The purpose of the rear cross-traffic assist is
to assist the driver; it cannot prevent a
colli­

sion on its own. The driver must always in­
tervene personally. As the driver you are al­
ways responsible for braking in good time.
- Please note that the rear cross-traffic assist
may apply the brakes unexpectedly. Always
secure your luggage to prevent damage and
possible injury.
-After an automatic brake jolt, no further
brake jolt will occur within 10 seconds.
- If the rear cross-traffic assist gives an
acoustic warning signal, the parking aid may
no Longer be able to warn you against obsta­
cles it has detected.
- The radar sensor vision can be impaired, e.g.
by leaves, snow, heavy road spray or dirt.
Clean the area in front of the sensors

*>page
128, Fig. 120.

A
WARNING
The rear cross-traffic assist has certain inher­
ent limitations and cannot warn against an
impending collision in every situation:
- It cannot give a warning if the vehicle is so
far into a parking space that it is hidden by
the vehicles in front and behind.
- People such as cyclists, joggers, inline skat­
ers and pedestrians may not be detected in
certain situations.
- It cannot give a warning when you are
parked at an angle or parallel to the
road­

side.

(T)
CAUTION
Please also observe the notes
^>©in
General
notes on page 129.
130