2021 AUDI Q2 heater

Heating and cooling
Heating and cooling
Heating system/air
conditioner
Description
One of the following systems may be fitted, de­
pending on the equipment in your vehicle:
- Heating and ventilation system or
- Manual air conditioner* or
- Automatic air conditioner* (deluxe version)
The heating and ventilation system* heats and
ventilates the vehicle interior. The air condition­
er* additionally cools and dehumidifies the air in­
side the vehicle. It operates most effectively with
the windows and the panorama sun roof* closed.
If the vehicle has been standing in the sun, it may
cool down faster if
you
open the windows briefly
to let the hot air escape.
Pollution filter
The pollution filter removes impurities, such as
dust and pollen, from the air.
Key-coded settings
Various settings are stored and assigned to the
remote control key in use.
Default settings
Default settings for certain functions can be se­
lected on the infotainment system.
SeLect the following on the infotainment system:

|MENU|
button
>
Car
>
left control button
>
A/C.
Supplementary heater*
Applies to: vehicles with diesel engine
The vehicle interior warms up more quickly with
the supplementary heater. The system automati­
cally switches the supplementary heater on
tem­

porarily as required, depending on the setting on
the vehicle heating system.
The supplementary heater function can be
switched on or off as required. SeLect the follow­
ing on the infotainment system:
|MENU|
button >
Car
>
left control button
>
A/C
>
Auto supple­
mentary heater.
® For the sake of the environment
I

- Switch off the cooling mode on the air
con­

ditioner* by pressing the A/C button if you
wish to save
fuel.
This will also reduce emis­

sions.
The LED in the button will go out
when the air conditioner is switched off.
- On vehicles with efficiency program*, you
can see how your fuel consumption is being
affected by auxiliary equipment and have
tips for improved fuel economy displayed

•=>
page 21.
- Applies to vehicles with diesel engine: The
automatic supplementary heater function
can be switched off on the infotainment sys­
tem
cépage
66, Supplementary
heater*.

©
- Keep the air intake slots in front of the
windscreen clear of snow, ice and Leaves to
ensure unimpaired heating and cooling, and
to prevent the windows misting over.
- Condensation can drip off the air cooling

system*
and form a pool underneath the ve­

hicle.
This is normal and does not indicate a
leak.
- If
you
notice, for instance, that the seat* or
rear window heating is not working, it may
have been temporarily switched off by the
power management function. These sys­
tems will be available again as soon as
suffi­

cient electrical power is available.

l
) Note
The air conditioner contains fluorinated
greenhouse gases. Further information is pro­
vided on a sticker in the engine compart­

ment1^.

1'
May vary in different countries
66

Heating and cooling
Automatic air conditioner
Applies to: vehicles with automatic air conditioner

We
recommend pressing the AUTO button and setting the temperature to 22 °C (72 °F).

Fig.
66 Automatic air conditioner: Controls (example)

CO

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The functions can be switched on and off using
the buttons and controlled using the rotary
con­

trols.
The LED in the corresponding button lights
up when the function is switched on.
Automatic air conditioner
The air conditioner is fully automatic, and will
maintain the desired temperature at a constant

level.
When the heater is on, the blower normally
only switches to a higher speed once the coolant
has warmed up sufficiently (this does not apply
to the defrost setting).
AUTO Automatic or "eco" mode*
The automatic mode maintains a constant
tem­

perature inside the vehicle. Air temperature, out­
put and distribution are regulated automatically.
The AUTO mode is switched off immediately
when you operate any of the manual air controls.
The "eco"
mode*1*
is activated if you press the
AUTO button briefly while automatic mode is ac­

tive.
Fuel is saved in "eco" mode* because the
settings respond more passively. The "eco"

mode*
is on when eco appears in the console dis­
play. The "eco" mode* is deactivated when you
press the AUTO button again.

1J
This function is not available on all export versions.
A/C Cooling mode
The air cooling system only works when the blow­
er is switched on. The air cooling mode is switch­
ed on/off when the A/C button is pressed. When
the air cooling is switched off, the air is not
cooled and therefore not dehumidified. The
win­

dows may mist up as a result. The air cooling is
switched off automatically at low outside
tem­

peratures.

#
/ # Temperature
The temperature for the driver's and front pas­
senger's sides can be set separately using
con­

trols ® and @. The temperature can be adjusted
between +16 °C (+60 °F) and +28 °C (+84 °F).
Outside this range, LO or HI will appear on the air
conditioner display. In the two extreme settings
the air conditioner operates continuously with
maximum cooling or heating output, and the
temperature is not regulated automatically.
Synchronisation: By pressing the AUTO button
for 2 seconds, the temperature of the passeng­
er's side can be set to the temperature of the
driver's side. The settings remain synchronised
until the temperature is changed on the passeng­
er's side.
I

69

Intelligent technology
Dynamic power management
While the vehicle is moving, this function distrib­
utes the available power to the various electrical
components and systems according to their re­
quirements. It ensures that on-board systems do
not consume more electrical power than is being

generated,
and thus maintains the maximum
possible vehicle battery power level.
® Note
- The power management system is not able
to overcome the given physical limits.
Please remember that the power and life of
the vehicle battery are limited.
- If the indicator lamp
|3 ^page
31 appears,
the starting ability may be impaired.
Starting ability has first priority.
Short trips, city traffic and low temperatures all
place a heavy load on the vehicLe battery. In
these conditions a large amount of power is
con­

sumed,
but only
a
small amount is supplied. The
situation is also critical if electrical equipment is
in use when the engine is not running. In this
case power is consumed when none is being
gen­

erated.

In these situations you will be aware that the
power management system is intervening to
con­

trol the distribution of electrical power.
When the vehicle is parked for long periods
If
you
do not drive your vehicle for a period of
several days or weeks, the power management
will gradually shut off the on-board systems one
by one, or reduce the amount of current they are

using.
This limits the amount of power consumed
and helps to ensure reliable starting even after a
long period. Certain convenience features, such
as remote controL unlocking, may not be availa­

ble.
These functions will be restored when you
switch on the ignition and start the engine.
150
With the engine switched off
If
you
listen to the radio or use the other info­
tainment functions when the engine is not
run­

ning,
this will discharge the vehicle battery.
The infotainment display will show a warning
message before the battery power drops to a Lev­
el where the starting ability is impaired. This
message warns you that the system you are using
will soon be switched off automatically. You
should therefore start the engine if
you
wish to
continue using the system.
When the engine is running
Although the alternator generates electrical
power, the vehicle battery can still become dis­
charged while the vehicle is being driven. This can
occur when a lot of power is being consumed but
only
a
small amount supplied, especially if the
vehicle battery is not fully charged initially.
To restore the necessary energy balance, the sys­
tem
will
then temporarily shut off the electrical
components that are using a lot of power, or re­
duce the current they are consuming. Heating
systems in particular use a Large amount of elec­
trical power. If
you
notice, for instance, that the
seat heating* or the rear window heater is not

working,
they may have been temporarily switch­
ed off or regulated to a lower heat output. These
systems will be available again as soon as
suffi­

cient electrical power is available.
You may also notice that the engine runs at a
slightly faster idling speed. This is quite normal,
and no cause for concern. The increased idling
speed allows the alternator to meet the greater
power requirement and charge the vehicLe bat­
tery at the same time.
Information saved in the
control units
The vehicle is fitted in the factory with electronic
control units that, among other things, control
the engine and the gearbox. The controL units al­
so monitor the exhaust system and the airbags.
The control units continually analyse data rele­
vant to the vehicLe while you are driving. In the •

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
Folding down rear seats 63, 64
Four-wheel drive
see quattro (four-wheel drive) 148
Frequency band
see Waveband 228
Front seats 58
FueL 289
Consumption 342
Current fuel consumption 19,20
Ethanol 289
Fuel gauge 12, 14
Saving fuel 131
Tank capacity 343

FueL
economy
Coasting mode 91
Driving style 72
Recuperation 19
Fuel range 19, 20
Fuses 332
G
GALA
see Speed-dependent volume control ... 260
Gearbox malfunction 92
Glove box 61
Ground clearance 85
H
Halogen headlights
Changing bulbs 334
Handbrake
see Electro-mechanical parking brake .... 82
Handsfree 172
Hazard warning lights 52
Head-protection airbag 286
Head-up display 25
Adjusting brightness 53
Headlight range control 49
Headlights 49
Headlight range control 49
Washer system 55
Washing 313
Headlights (changing buLbs) 334
Head restraints
Adjusting 58,
59

Removing/installing 59
Head restraints, adjusting 266
Heated
Exterior mirrors 53
Rear window (automatic air conditioner) .. 70
Rear window (heating/ventilation system
and manual air conditioner) 68
Seats (automatic air conditioner) 70
Seats (heating/ventilation system and
man­

ual air conditioner) 68

Washer
jets 55
Heater (supplementary heater for diesel en­
gine) 66
Heating/ventilation system 66
Adjusting air outlets 71
Controls 67
Default settings 66
Description 66
Key-coded settings 66
Supplementary heater 66
Hill hold assist 83
Hill starting
see Hill hold assist 83
Hold assist 84
Hold assist (hill hold) 83
Home address 210, 215
Horn 10
Hubcaps, removing 321
I

i-Size
(securing child seats) 270
Ignition
Switching on/off (with button) 76
Switching on/off (with the key) 74
Immobiliser
see Electronic immobiliser 38
Importing/exporting contacts 187
Inflation pressure (tyres) 309
Input level (media) 246
Inspection intervals 304
Instrument cluster 12
Cleaning 314
Driver messages 26
350

Index

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Navigation 217
Radio 231
Speech dialogue system 256
System
(MMI)
255
Telephone 187
Shuffle
see Random playback 246
Side airbag 285
Side assist
see Audi side assist 127

Sidelights
49
SIM card
see Embedded SIM card 191
SIM card reader 176, 191, 192
Smartphone
see Telephone 172
SMS
see Text messages 182
Snow chains 309
Software update
see Map update 200
see System update (MMI) 259
Software (MMI)
Licence conditions 262
Update 259
Version 259
Sound settings 260
Source overview 243
Spanner 319
Spare key 38
Spare wheel 324
Special destination 211
Speech dialogue system 164
Commands 165
External 170
Multi-function steering wheel 17
Operation 164
Settings 256
Volume 262
Speed-dependent volume control 261
Speed limit display
see Traffic sign recognition 108
Speed limiter 106
Speed limits
see Traffic sign recognition 108
Speedometer 12
Speed warning 104
Speller 159
Start/stop system 79
START ENGINE STOP (convenience key) . 76,77
Starting with jump leads 326
Station memory
see Favourites 231
Station search (radio)
see Updating station list (radio) 231
Steering 148
Locking (button) 77
Locking (ignition lock) 75
Steering wheel
Adjusting 74
Paddle levers (automatic gearbox) 90
see also Multi-function
steering wheel
15,17,
18
Stopover (navigation) 213
Storage compartments 61
Streaming
see Online media 239
S tronic (automatic gearbox) 85
Subtitles (DVD) 246
Subwoofer 261
Sun roof
see Panorama sun roof 48
Sun visors 54
Supplementary heater (vehicles with diesel
engine) 66
Surround sound 261
Suspension control 131
Switching between calls 180
Switching between tabs
see Multi-function steering wheel . 15, 17, 18
Switching character sets (MMI touch) 155
Symbols 161
Navigation 219
Traffic 225
System settings (MMI)
255

System update (MMI) 259
System volume 261
T
TDI clean diesel
see AdBlue 292