2021 AUDI Q2 cooling

Checking and topping up fluids
A WARNING

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- The cooling system is under pressure. Do
not unscrew the cap on the expansion tank
when the engine is hot: you could be
scal­

ded by escaping steam.
- The coolant and coolant additive can be a
health hazard. Store the coolant additive in
the original container in a safe place out of
reach of children - risk of poisoning.
- When working in the engine compartment
be aware that the radiator fan may start
running suddenly, even if the ignition is
switched off- risk of injury!
Brake fluid
© CAUTION
Do not add coolant if the expansion tank is
empty. Air could have got into the cooling
system - risk of engine damage! In this case,
do NOT drive on. Obtain professional assis­

tance.

- Have your qualified workshop check the
cooling system before the winter season to
make sure that the anti-freeze concentra­
tion is adequate for the conditions to be ex­

pected.
This applies particularly if
you
drive
into a colder climate zone.
-To prevent damage to the engine, do not
use a different type of anti-freeze additive if
the approved type of additive is not availa­

ble.
In this case use only water and bring
the coolant concentration back up to the
correct level as soon as possible by putting
in the specified additive.
- Always top up with fresh, unused coolant.
- Radiator sealants must not be added to the
coolant.

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Fig.
249 Engine compartment: Cap of brake fluid reservoir
Please refer to the safety notes
^page
295,
Working on components in the engine compart­
ment.
Checking brake fluid level
Read off the brake fluid level on the brake fluid
reservoir
^>page
297, Fig. 245. The brake fluid
level must be between the MIN and MAX marks

<=>A.

The brake fluid
level
is also automatically moni­

tored.

In right-hand drive vehicles the brake fluid reser­
voir is on the other side of the engine compart­
ment.
Changing brake fluid
Have the brake fluid changed regularly by a quali­
fied workshop.
WARNING
-If the brake fluid Level is under the MIN
mark, the effectiveness of the brakes and
therefore the safety of the vehicle may be
impaired - risk of accident! Do not drive on.
Obtain professional assistance.
- Heavy use of the brakes may cause a vapour
lock if old brake fluid is left in the system.
This would seriously impair the effective­
ness of the brakes and the safety of the car
- risk of accident!
© CAUTION
- If the brake fluid level is above the MAX
mark, brake fluid may escape via the cap on •
301

Wheels
DOT ...2216...
means, for example, that the tyre was produced
in the 22nd week of 2016.
Audi Genuine Tyres
Audi Genuine Tyres with the marking "AO" are
specially matched to your Audi. When used prop­
erly, these tyres meet the highest standards in
safety and handling. Your specialist retailer will
be glad to provide more information.
Tyre wear / damage

A
WARNING
- Use only tyre/rim combinations and match­
ing wheel bolts approved by Audi. Otherwise
damage to the vehicLe and an accident could
result.
- For technical reasons, it is not possible to
use wheels from other vehicles. In certain
cases, it is not even possible to use wheels
from another vehicle of the same model.
- It is very important to ensure that the tyres
you have chosen have adequate clearance.
When selecting replacement tyres, do not
rely entirely on the nominal tyre size
marked on the tyre; with some makes of
tyre the effective tyre size can differ signifi­
cantly from the nominal dimensions, even
though the tyres have the same size desig­

nation.
Inadequate tyre clearance can result
in damage to the tyres or the vehicle, caus­
ing a serious safety risk.
- Avoid running the car on tyres that are more
than 6 years old. If
you
have no alternative,
you should drive slowly and with extra care
at all times.
- The use of run-flat tyres on your vehicle is
NOT authorised! Unauthorised use can cause
an accident or damage your vehicLe.
- If wheel trims are fitted after the car is pur­

chased,
ensure that there is an adequate
flow of air for cooling the brakes - risk of ac­
cident!

Fig.
252 Tyre tread: Tread wear indicators
Tyre wear
Inspect the tyres regularly for damage.
- The wear on under or over-inflated tyres is
sig­

nificantly higher.
- Fast cornering, heavy acceleration and hard
braking all increase tyre wear.
- If
you
notice excessive tyre wear, have the
wheel alignment checked by a qualified work­

shop.

- Have your tyres rebalanced if steering wheel vi­
brations indicate an imbalance. Otherwise, the
tyres and other parts of the vehicLe may wear
faster.
Tread wear indicators
The original tyres on your vehicle have 1.6 mm
high tread wear indicators
^>Fig.
252 running
across the tread at regular intervals. The letters

"TWI"
or triangles on the sidewall indicate the
positions of the tread wear indicators.
The minimum tread
depth1)
is reached
at
the lat­
est when the tread is worn down to the tread
wear indicators. Replace the tyres with new ones
Changing wheels round
Wheels should be changed round regularly to en­
sure that the wear is equal on all tyres. Fit the
wheels from the rear axle on the front axle and
vice-versa. All the tyres will then last for about
the same time.

x)
Please observe the applicable regulations in the country in
which you are travelling.
306

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

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Emergency braking function 82
New brake pads 147
Browser
see Media centre 244
Bulb failure
Changing bulbs 334

Bulbs,
changing 334
Buttons
Assigning functions (multi-function steering
wheel) 17
Multi-function steering wheel 15, 18
Operating unit (MMI) 152
C
Cables (USB adapter/AUX adapter) 240
Calling up media 243

Call
list 179

CalL
options 187
Capacities
AdBlue 292

Fuel
tank 343
Washer fluid reservoir 343
Caps for wheel bolts, removing 321
Car care
Washing/cleaning 312
Care
see Cleaning 312
Car phone
172,188

Catalytic converter 295
CD drive 236
Central locking system 37
Cetane number (diesel) 289
Changing settings for additional dispLay .... 19
Charging
see Power sources 60
Charging battery 242
Charging battery (mobile devices) 241
Chassis number 342
Child lock 46
DVD 246
Child seats 267
Fitting 270
Cigarette Lighter 60
Classic view 17
Cleaning 312
Cleaning/de-icing windows 314
Cleaning/treating leather 315
Cleaning Alcantara 315
Cleaning carbon parts 314, 315
Cleaning controls and displays 314
Cleaning fabrics 315
Cleaning leatherette 315
Cleaning plastic parts 314
Closing
Panorama sun roof 48
Windows 46
see also Unlocking/locking 39, 40
Closing/opening
see Unlocking/locking 39, 40
Coasting mode 91
Coat hooks 61
Colour code 342
Coming home/leaving home
see Entry/exit lights 51
Commands (speech dialogue system) 164
Compact temporary spare wheel 324
Compartments 61
Conference calls 180
Connection manager 257
Connections
see Media 234, 243
Consumption (fuel) 19, 20, 342
Contacts 185
From another directory 258
Importing/exporting 187
Memory capacity 189
Storing as a destination
216

Control buttons (MMI operation) 154
Controls and displays (overview) 10
Control units 150
Convenience key
Manual operation 79
Starting/stopping the engine 76
Unlocking/locking 39
Convenience open/close 47
Cooling mode
Automatic air conditioner 69
Manual air conditioner 67
Cooling system
Anti-freeze 299
Checking coolant level 300
347

Index

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Voice guidance
see Multi-function steering wheel .
15,17,18

Volume 261
W
Warning lamps 26
Warning triangle 318
Wash/wipe 55
Washing 312
Washing ornamental trim/mouldings 313, 314
Washing rear lights 313
Washing tailpipes 313
Waveband 228, 230
see also Waveband 228
Weights 343
Wheel bolt caps
Removing 321
Wheel bolts 308
Anti-theft 321
Loosening 322
Torque 324
Wheel imbalance 306
Wheels 305
Changing 321, 323
Washing 313
Wi-Fi
Audi music stream 238
Audio players 238
Hotspot 201
Online media 239
see also Personal Wi-Fi hotspot 195
Windows 46
Cleaning/de-icing 314
Windscreen
Washing 55
Windscreen washer system 55, 303
Reservoir capacity 343
Windscreen wipers 55
Changing the wiper blades 56
Winter conditions
Cooling system 299
De-icing windows 314
Defrosting windows (automatic air condi­
tioner) 70
Defrosting windows (heating/ventilation
system and manual air conditioner) 67
Diesel 289
Seat heating (automatic air conditioner) .. 70
Seat heating (heating/ventilation system
and manual air conditioner) 68
Snow chains 309
VehicLe battery 302
Washing the vehicle 312
Windscreen washer system 303
Winter tyres 308
Wiper blades, changing
57

WLAN
see Wi-Fi 238
Wrench 319
Z
Zooming (map) 209, 210, 219
357