2021 AUDI Q2 brake sensor

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

Driver assist systems

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-The automatic brake application with in­
creasing brake force can be cancelled by ap­
plying the brakes yourself or by pressing the
accelerator firmly.
- In certain situations, a warning may be giv­
en by the rear cross-traffic assist even if
there is no traffic in the critical zone, for in­
stance when parking or manoeuvring the ve­
hicle in reverse.
- The rear cross-traffic assist is deactivated
automatically if you deactivate the
ESC.

-The rear cross-traffic assist is switched on/
off via the parking aid
^>page
134.
-The system is not available in towing mode.
Driver messages
Applies to: vehicles with Audi side assist
Should the side assist be deactivated automati­
cally, a driver message will appear in the instru­
ment cluster display.

O
Audi side assist: system fault!
The system cannot detect vehicles reliably and
will be deactivated. The sensors are out of align­
ment or defective. Have the system checked by a
qualified workshop soon.

O
Audi side assist: currently unavailable. No
sensor vision

O
Audi side assist: currently unavailable.
Sen­

sor view restricted due to surroundings. See
owner's manual
The radar sensors are blocked. The area in front
of the sensors must not be obstructed by bicycle

racks,
stickers, deposits or any other substances.
If necessary, clean the area in front of the
sen­

sors
^>page
128, Fig. 120.

O
Audi side assist: currently unavailable
The side assist is temporarily inoperative and
cannot be switched on (for instance if the battery
is not sufficiently charged).

O
Audi side assist: unavailable in towing mode

2
Audi side assist: unavailable in towing mode
The side assist function will be switched off auto­
matically after a short time when the electrical
connector for the trailer socket is plugged in on
vehicles with a factory-fitted towing bracket. If
the towing bracket is not factory-fitted the side
assist function may not be switched off automat­
ically. The side assist must not be used when
towing a trailer.

O Rear
parking aid: obstacle detection limited
The rear cross-traffic assist is not available. Ei­
ther the ESC is switched off or the radar sensors
may be obstructed by a bicycle rack, stickers,
leaves, snow or similar objects. Switch on the ESC
or, if necessary, clean the area in front of the
sen­

sors
<3page
128, Fig. 120. If this message re­
mains displayed, drive to a qualified workshop
soon and have the fault rectified.
Audi drive select
Introduction
Applies to: vehicles with Audi drive select
Audi drive select alLows you to use different set­
ups on your vehicle. The modes efficiency*, com­
fort, auto and dynamic allow the driver, for ex­

ample,
to change from a sporty mode to a more
comfortable one via the
&&
button in the centre
console or via the infotainment system. In
addi­

tion,
the individual* mode allows you to adapt
the vehicle set-up to
suit
your personal driving

style.
For example, you might choose to combine
a more dynamic engine set-up with a lighter
steering response.
Description
Applies to: vehicles with Audi drive select
The possible vehicle set-up in each mode de­
pends on which equipment is installed on your
vehicle. The engine and steering are basic parts
of your vehicle which are always included in the

set-up.

Engine and automatic gearbox*
The response of the engine and automatic
gear­

box* to accelerator pedal movements will be
more spontaneous or balanced, depending on
131

Care of vehicle and cleaning

A.
WARNING
- Follow the rules and recommendations of
the car wash operator and do not wash the
vehicLe with the ignition switched on - risk
of accident!
- To avoid cutting yourself on sharp metal

parts,
always wear suitable protection when
cleaning the underside of the car or inside
the wheel arches.
- After the car has been washed, the full brak­
ing effect can be delayed by moisture (or in
winter by ice) on the discs and brake pads -
risk of accident! The brakes should be dried
by pressing the pedal to restore full braking
effect.
© CAUTION
- Before washing the vehicle in an automatic
car wash, please make sure to retract the
exterior mirrors to prevent damage. Always
use the electrical power controL to fold the
mirrors in/out on vehicles with electrically
retractable exterior mirrors*.
- Do not wash the vehicle in direct sunlight -
otherwise the paint can be damaged.
- Do not use insect sponges or abrasive
household sponges, etc. - they can damage
the surfaces.
- Matt-painted vehicle parts:
- Do not use polish or wax - otherwise the
paintwork can be damaged.
- Never use car-wash programmes that in­
clude wax coatings. This could spoil the
matt finish.
- Do not attach any stickers or magnet la­
bels to matt-painted parts as these could
damage the paintwork when they are re­

moved.

® For the sake of the environment
The car should only be washed in special wash

bays.
This prevents oily water from getting in­
to the public drains.

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Notes on cleaning and care
For cleaning and care of individual components
on the vehicle, please refer to the tables below.
These are recommendations only. If
you
have
Cleaning the exterior
special questions or certain components are not

listed,
please ask your qualified workshop. Please
also refer to the notes
•=> A-

Component(s) Situation
Wiper blades
Headlights/
rear lights
Sensors/
camera lenses
Wheels
Tailpipes
Ornamental trim/
mouldings
Dirt/deposits
Dirt/deposits
Dirt/deposits
Snow/ice
Road salt
Brake dust
Road salt
Dirt/deposits
Remedy

^>page
56, Cleaning the wiper blades
Soft sponge with mild
detergenta)

Sensors: soft cloth with solvent-free cleaning agent
Camera lenses: soft cloth with alcohol-free cleaning agent
Small brush/solvent-free de-icer spray
Water
Acid-free cleaning agent
Water; suitable stainless steel cleaning product if necessa­
ry
Mild
detergenta);
suitable stainless steel cleaning product
if necessary
313

Fuses and bulbs

: -•.
-
i:i

m
R2 R3
F22

F-XII
F31
F30

:-:-.'

'.,
FM F43

F49
F!)3
F52
F51
R!,

a

R6

Fig.
277 Interior: Fuse layout

No.

Fl

F2
F4

F5

F6
F7
F8
F9
F10

Fll

F12
F13
F14
F15
F16
F17
F18
Electrical equipment
AdBlue engine components
Seat adjuster
Infotainment control console
Gateway
Selector lever (for automatic gearbox)
Air conditioner/heater console, relay coil
for rear window heating
Switch for electro-mechanical parking

brake,
light switch,
rain/Light
sensor, inte­
rior lighting, anti-theft
aLarm
system, di­
agnostic connector, emergency call system
Steering column switch module
Infotainment/head-up display
Belt tensioners (driver's side)
Infotainment components
Control unit for suspension control
Blower (heating system/air conditioner)
Electric steering column lock
Infotainment components
Instrument cluster
Reversing camera

No.

F19
F20
F22
F23
F24

F25

F26
F27
F29
F31

F32
F33

F34

F35
F36

F37
F39
F40
F41
F42
F43
F44
F47
F49

F53

Electrical equipment
Control unit for convenience access, park
assist
AdBlue engine components
Power-operated boot lid
Control unit for vehicle electrical system
(right side)
Panorama sun roof
Front/rear door control unit, front/rear
window switches
Seat heating
Sound amplifier
Interior lights
Control unit for vehicle electrical system
(left side)
Control unit for camera, radar sensor, park
assist
Airbag
Button Lighting for hold assist, interior

sound,
reversing light switch, temperature
sensor, coiL for electrical socket reLay, but­
ton for hold assist
Function lighting (halogen), headlight
range control, air quality sensor, automat­
ic anti-dazzle mirrors, diagnostic connec­
tor, centre console power supply
Right headlight (LED)
Left headlight (LED)
Front/rear door control unit, front/rear
window switches
Cigarette lighter, electrical sockets
Belt tensioners (front passenger's side)
Central locking system, windscreen washer
Interior lights
Four-wheel drive
Rear window wiper
Clutch sensor (relays 1+2)
Rear window heating
The seats with electric adjustment* are protected
by circuit breakers. These reset automatically af­
ter a few seconds when the overload has been

corrected.

333

Fuses and bulbs
Fuses in engine compartment

Fig.
278 Engine compartment: Fuse layout

No.

Fl

F2
F3
F4

F5

F6
F7

F8

F9
F10

Fll

F12
F13
F15
F16
Electrical equipment
Electronic stabilisation control (ESC)
Electronic stabilisation control (ESC)
Engine control unit
Engine components, engine cooling, sup­
plementary heater relay coils (1+4+7),
secondary air pump relay
Engine components, tank system (diesel)
Brake Light sensor
Engine components, coolant pumps, tank
system (petrol)
Lambda probe
Engine components, exhaust flap, control
unit for automatic glow period (relay 6)
Fuel control unit, fuel pump
Supplementary heater heating rod 2
Supplementary heater heating rod 3
Automatic gearbox
Horn
Ignition coil (relay
8)

Electronic stabilisation control (ESC), en­
gine control unit (relay 5)

No.

F18
F19
F20
F22
F23
F24
F31
F33
Electrical equipment
Battery monitoring, gateway
Windscreen wipers
Anti-theft alarm system
Terminal 50, diagnostics, engine control
unit
Starter
Supplementary heater heating rod 1
Vacuum pump
Automatic gearbox, gearbox oil pump
Bulbs
General notes
Changing bulbs requires a certain degree of
practical
skill.

LED*
lights are maintenance-free and cannot be

changed.
For repairs, please contact a qualified
workshop.
If
you
decide to change bulbs in the engine com­
partment yourself, be aware of the safety risks
involved
*
A in Working on components in the
engine compartment on page 295.
WARNING
- Take particular care when working on com­
ponents in the engine compartment if the
engine is warm - risk of burns!
- Bulbs are sensitive to pressure. The glass
can break when you touch the bulb, causing
injury.
- When changing bulbs, please take care not
to injure yourself on sharp edges, in particu­
lar on the headlight housing.
© CAUTION
-Always switch off the ignition before carry­
ing out any work on the electrical system -
danger of short circuiting!
- Switch off the Lights or parking lights before
you change a bulb.
- Take good care to avoid damaging any com­
ponents.
334

Index
A
A/C (automatic air conditioner) 69
A/C (manual air conditioner) 67
ABS
see Anti-lock brake system (ABS) 145
Accelerator pedal 272
Accessories 60
Active Lane assist
see Audi active lane assist 123
Adaptive cruise control
see Audi adaptive cruise control
Ill

Adaptive light
see Audi adaptive light 49
AdBlue 292
Driver messages 292
Refilling 293
Remaining range 292
Additional phone 175, 257
Advanced key
see Convenience key 76
Airbag
Deactivating front passenger's airbag ... 288
Air conditioner (automatic) 66
Adjusting air outlets 71
AUTO (automatic mode) 69
Controls 69
Default settings 66
Description 66
Drive select 131
Key-coded settings 66
Supplementary heater 66
Synchronisation 69
Air conditioner (manual) 66
Adjusting air outlets 71
Controls 67
Default settings 66
Description 66
Key-coded settings 66
Supplementary heater 66
Air distribution, adjusting
Automatic air conditioner 70
Heating/ventilation system and manual air
conditioner 67

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Air outlets, adjusting 71
Automatic air conditioner 70
Heating/ventilation system and manual air
conditioner 67
Air recirculation mode
Automatic air conditioner 70
Heating/ventilation system and manual air
conditioner 68
Alarm system
see Anti-theft alarm system 42
All-season tyres
see All-weather tyres 308
All-weather Lights 49
All-weather tyres 308
Alterations to the vehicle 340
AMI
see Audi music interface 240, 241
Android Auto
see Audi smartphone interface 253
Announcements (traffic programme)
Volume 261
Anti-dazzle interior mirror 54
Anti-freeze
Coolant 299
Windscreen washer system 303
Anti-lock brake system (ABS) 145
Anti-theft alarm system 42
Anti-theft wheel bolts 321
Apple CarPlay
see Audi smartphone interface 253
Armrest (front centre) 58
Ashtray 59
ASR
see Traction control system (ASR) 145
Audi active lane assist 123
Cleaning area around camera 313
Driver messages 125
Audi adaptive cruise control
Ill

Cleaning sensor 313
Distance indicator, distance warning .... 118
Driver messages 119

Traffic
jam assist 117
Audi adaptive light 49, 131
Audi connect (infotainment) 191,203
Data protection 205
Overview of services 197
345

Index
Personal hotspot 195
Setting up 196
Setup 191
Topping up data plan 197
Audi drive select 131
Audi magnetic ride
see Suspension control
131

Audi music interface 240
Audi music stream
see Wi-Fi 238
Audio files 243
Audio players
Bluetooth audio players 237
Wi-Fi audio players 238
Audio track 246
Audi phone box 177
Audi pre sense 120
Driver messages 119, 122
Settings 122
Audi side assist 127
Cleaning sensors 313
Driver messages
131

Rear cross-traffic assist 130
Audi smartphone interface 253, 258
Audi virtual cockpit
see Instrument cluster 12
AUTO
Automatic air conditioner 69
Automatic headlights 49
Auto Lock (central locking system) 37
Automatic air conditioner
see Air conditioner (automatic) 66, 69
Automatic gearbox 85
Back-up programme 92

DownhilL
speed control 89
Driving tips 88
Kick-down 90
Launch control programme 91
Malfunction 86
Manual gear selection (tiptronic mode) ... 90
Manual release of selector Lever (left-hand
drive) 93
Manual release of selector Lever (right-hand
drive) 94
Paddle levers 90
Selector lever 88
Selector lever Lock 86
Selector lever positions 86
AUX input
241,
242
Average fuel consumption 19, 20
Average speed 19, 20
Axle loads 343
B
BACK button 152
Background lighting 53
Balance (sound) 260
Bandages
see First-aid kit 318
Bass box 325, 326
Bass (sound) 260
Battery 302
Charge 149
Charging 303
In key 38
Winter conditions 302
Battery, charging (mobile devices) 177
Belts
see Seat belts 275
Bicycle racks (rear carrier systems) 99
Biodiesel 289
Bioethanol (fuel) 289
Blower
Automatic air conditioner 70
Heating/ventilation system and manual air
conditioner 67
Bluetooth
Audio players 237
Connecting a mobiLe phone 173
Remote SIM Access Profile 193
Settings 258
Boot
see Luggage compartment 272
Boot lid
Close button 44

Opening/dosing
electrically 44
Brakes 147
Brake assist system 145
Brake fluid 301
Brake pedal 272
Electro-mechanical parking brake 82
346

Index

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Paddle levers (automatic gearbox) 90
Paint damage 314
Paint number 342
Panorama sun roof 48
see also Convenience open/close 47
Park assist 139
Parking aids 134
Cleaning sensors/camera 313
Malfunction 144
Park assist 139
Reversing camera 137
Settings 143
Parking brake
see Electro-mechanical parking brake .... 82
Parking lights 50
Parking (automatic gearbox) 88
Particulate filter (diesel) 295
Passenger's
door,
locking manually 41
Path descriptions in Owner's Manual 154
Pause (audio/video file) 243
Pedals 272
Performance (engine) 344
Personal hotspot 201
Personal route assist 214
Personal Wi-Fi hotspot 195
Petrol 289
Petrol engine
Engine oil 297
Phone book
see Contacts 185
Picture format (video) 246
Playback (media) 243
Playlist 246
Point of interest search 212

see
also
Special
destination 211
Polishing 314
Pollen filter
see Pollution filter 66
Pollution filter 66
Power management 149
Power sources 60
Preheating (glow plugs) 74, 76
Presentation mode 217
Pressures (tyres) 307
Privacy 234
Programme guide
Radio 229
Q
quattro (four-wheel drive) 148
Selective wheel torque control 145
R
Radio 228
Detailed station information 230
Radio text 229
Station list 228
Radio equipment 340
Radio frequency
see Waveband 228
Radio transmitters 340
Rain sensor/light sensor
Automatic headlights 49
Switching rain sensor on/off 55
Random playback 246
Reading lights 52
Rear armrest
see Cup holders 61
Rear carrier systems 99
Rear lights (changing bulbs) 334
Rear of vehicle
Boot lid 43
Washing rear window 55
Rear window heating
Automatic air conditioner 70
Heating/ventilation system and manual air
conditioner 68
Recommended gear 14
Recuperation 19
Reminder signal 255
Remote control keys 38
Repairs 340
Replacement parts 340
Reset
see Restart (MMI) 262
Reset button (trip recorder) 14
Restart (MMI) 262
Rest recommendation 110
Retaining hooks 61, 63