2021 AUDI Q2 warning light

Driver assist systems

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- The traffic sign detection system does not
adjust the speed of your vehicle to the speed

limits.

The speed limit displayed in the instrument
cluster is given in the units applicable in a
particular country.
Controls
Applies to: vehicles with camera-based traffic sign recogni­
tion

-22.0-C

Fig.
99 Instrument cluster: Secondary display
Calling up the traffic sign recognition

•
Call up the first tab (on-board computer) using
the
GL>]
button on the multi-function steering

wheel.

•
Applies to vehicles with analogue instrument
cluster: Press the
LU]
button and select Traffic
signs from the menu.

•
Applies to vehicles with Audi virtual cockpit: Se­
lect the display for Traffic signs.
Displaying signs for trailers
You can also display speed limits which apply
specifically to vehicles towing a trailer1).

•
Select the following on the infotainment sys­

tem:
|MENU|
button > Car
>
left control button
Driver assist
>
Traffic signs
>
Automatic trailer
recognition.
Setting the maximum speed for a trailer
You can set the maximum speed permitted for

your
type of
trailer15.
If
you
do not enter
a
value,

x)
Applies to factory-fitted towing brackets only
the system will show the maximum national
speed limit for vehicles towing a trailer.

•
Select the following on the infotainment sys­

tem:
|MENU|
button Car
>
left control button
Driver assist
>
Traffic signs
>
Trailer: highest

speed.

Setting speed warning
You can set a warning threshold up to
15
km/h.
The traffic sign for the currently detected speed
limit will flash on the display if the selected
warning threshold is exceeded.

•
Select the following on the infotainment sys­

tem:
IMENU|
button > Car
>
left control button
> Driver assist
>
Speed warning
>
Traffic sign

based.

Secondary display
If the instrument cluster is currently showing a
function other than traffic sign recognition, the
speed limit will be displayed in the top right-
hand corner
^Fig.
99. If the system is able to de­
tect
a
temporary speed restriction in a given sit­

uation,
it will update the display accordingly.
Temporary speed restrictions are displayed in the
following situations:
- A temporary speed restriction for wet weather
is detected while the windscreen wipers are op­

erating.

- A speed restriction for fog is detected while the
vehicle's rear fog light or all-weather lights are
switched on.
- A speed restriction applying at certain times of
day has been detected and corresponds to the
time displayed in the instrument cluster.
- The vehicle is towing a trailer and the Automat­
ic trailer recognition option is activated on the
infotainment system. In this case, restrictions
applying to trailers are
displayed15.

© Note
- Your speed warning settings and the maxi­
mum trailer speed will be automatically
stored and assigned to the remote control
109

Driver assist systems

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- In certain situations, the system may misin­
terpret driving manoeuvres and inappropri­
ately recommend a break.
- No acute warning is given if the driver falls
into a microsleep.
Instrument cluster display
Applies to: vehicles with rest recommendation

H
Rest recommended
If the warning lamp lights up and the message
appears, the evaluation of the steering input has
resulted in a rest recommendation. This is also
indicated by a warning tone. Take a break as soon
as possible.
The message may be displayed again once if nec­
essary.
Switching on/off
Applies to: vehicles with rest recommendation
Select the following on the infotainment system:

|MENU|
button > Car > left control button > Driv­
er assist > Rest recommendation.
© Note
If you switch off the system,
it
will remain
switched off the next time you switch on the

ignition.

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

»

Fig.
100 Sensor range
The adaptive cruise control is a combined speed
and distance control system. It assists the driver
by controlling the road speed and the distance to
the vehicle in front within certain limits imposed
by the system. The adaptive cruise control sys­
tem can accelerate and brake when it detects a
vehicle in front. This provides maximum comfort
both on long motorway journeys and in conges­
ted traffic (automatic gearbox*).
What can the adaptive cruise control do?
The adaptive cruise control uses a radar. The ra­
dar is subject to certain system limitations

opage
112.
When there is no traffic in front, the adaptive
cruise control works just like a normal cruise
con­

trol system by maintaining a constant speed.
When you draw closer to a vehicLe in front which
is detected by the system, the adaptive cruise
control matches your speed to that vehicle by au­
tomatically applying the brakes, and then main­
tains a constant distance (which you can adjust in
the settings). As soon as it detects no more
vehicles in front, the adaptive cruise control ac­
celerates back up to the cruising speed.
Applies to: vehicles with automatic gearbox
In congested traffic, the adaptive cruise control
can brake down to a standstill and accelerate
again (subject to general system limitations) un­
der certain conditions
*$page
115, Driving in
congested traffic. The traffic jam assist (active
lane assist)* can assist the driver in traffic jams
and heavy congestion
<=>page
117.
Which functions can the driver control?
When you switch on the adaptive cruise control,
you can set your current speed as the "cruising

speed"
^>page
113, Switching
on/off.

While you are driving, you can interrupt the
cruise control
opage
115 or change the speed
setting
Opage
114 at any time.
In addition, you can adjust the distance to
vehicles in front and the driving program for the
adaptive cruise control
^>page
116.

Ill

Driver assist systems

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•
To increase or reduce the speed quickly, hold
the lever towards
©/©
until the
LED ©
opage
113, Fig. 105 reaches the de­
sired cruising speed.
You can preselect the speed, even when the
adaptive cruise control is inactive, by moving the
lever in the appropriate direction ©/©. To
acti­

vate the preselected speed, pull the lever to
posi­

tion ©
^>page
113, Fig. 104.
Following any changes, the new stored speed will
be displayed briefly in the status line

opage
113, Fig. 105 ©. The indicator lamp
E53
KOI
is also lit when the adaptive cruise control is

active,
and the indicator Lamp
B3 iS Lit
when the
adaptive cruise control is inactive. The indicator

lamp El
will Light up instead in the Audi virtual
cockpit*.
Driving in congested traffic
Applies to: vehicles with Audi adaptive cruise control and au­
tomatic gearbox
The adaptive cruise control assists you when driv­
ing in congested traffic. If
a
vehicLe which has
been detected in front stops, the adaptive cruise
control applies the brakes (within the limits im­
posed by the system) and holds the vehicle at a

standstill.

•
To set the vehicle in motion again with the
adaptive cruise control, tap the accelerator

with
your foot, or

•
Pull the lever towards you to position ©

•=>
page 115, Fig. 107.
Using the adaptive cruise control to set the
vehicle in
motion1'

If the message ACC: ready to drive off is on the
display and the vehicle in front drives off, your
vehicle will automatically start moving
•=>
A. You
can reactivate the ACC: ready to drive off mes­
sage briefly by pulling the lever to position ©.
For safety reasons, your vehicle will start moving
only if
- the driver's seat belt is
buckled.

x)
Not available on vehicles for some markets.
- all the doors and the bonnet are closed,
- your vehicle has been stationary for Less than
3 minutes.

A
WARNING
If the ACC: ready to drive
offx)
message ap­

pears,
your vehicle will start moving even if
there is an obstacle between your car and the
vehicle in front - risk of accident!
© Note
If your vehicle does not start moving as ex­
pected with the adaptive cruise control, even
though the ACC: ready to drive
off1)
message
is displayed, you can set the vehicle in motion
by tapping the accelerator with your foot.
Interrupting the cruise control
Applies to: vehicles with Audi adaptive cruise control

Fig.
107 Control lever
Important: The adaptive cruise control must be

on.

Overriding the cruise control

•
To accelerate manually, pull the lever towards
you to position © and hold it in this position or
press the accelerator. The message ACC: over­
ride will appear.
• To reactivate the cruise control, release the Lev­
er or take your foot off the accelerator.
Interrupting the cruise control while driving

•
Move the lever to position ©. The message

ACC:
standby will appear. Or:
• Apply the brakes.
115

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

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- On vehicles for some export markets: once
the system is activated, it is "ready" each
time the ignition is switched on.
Instrument cluster display
Applies to: vehicles with Audi active lane assist
Drive to a qualified workshop soon and have the
fault rectified.

Fig.
116 Instrument cluster: active Lane assist switched
on and ready to warn
You can use the controls on the multi-function
steering wheel to call up the active lane assist
display
^>page 15/^>page
18.
Information is also provided in the head-up dis­
play*.
Instrument cluster
display
Green line(s)
(left or right)
Red Line
(left or right)
Grey line(s)
(left or right)
Meaning on correspond­
ing side
The active lane assist is
switched on and ready to

warn.

The active lane assist
warns you before you
cross the lane demarca­

tion.
In addition, the
steering wheel vibrates
slightly.
The active lane assist is
switched on but not ready
to warn.
Driver messages in the instrument cluster
display
Should the active lane assist be deactivated auto­
matically, the indicator lamp on the display will
go out and one of the following messages will
appear:
Audi active lane assist: system fault!
Audi active lane assist: currently unavaila­

ble.
No camera view
This message is displayed when the camera is no
longer functional after the system has continu­
ously failed to detect the lane markings. This can
have the following causes:
-The outside of the camera window
^page
124,
Fig. 115 is dirty or frosted. Remove dirt or ice
from this area of the windscreen.
- The inside of the camera window is misted up.
In this case, wait for the camera window to de­
mist before switching on the active lane assist
system again.
- Due to the road conditions, the system has not
been able to detect the lane markings for a
long period. Do not switch the active Lane assist
system on again before the lane markings are
discernible.

Q
Audi active lane assist: currently unavailable
A temporary fault is preventing the active lane
assist system from functioning. Try switching on
the active lane assist system again later.

|
Audi active lane assist: please take over

steering.

This message will appear if
you
do not steer the
vehicle yourself. The active lane assist is switched
on but not ready to warn. If the driver still does
not react, the system warns additionally with a
short sharp application of the brakes and
acti­

vates the emergency assist*
^>page
126.
A WARNING
Please note that the messages only appear
with a delay or are not displayed at all on
vehicles with additional equipment (such as
steering wheel knobs) fitted on the steering

wheel.
Always keep your hands on the steer­
ing wheel.
125