2021 AUDI Q2 fuel pressure

Table of Contents
Audi smartphone interface 253
Setting up
253

How to use 254
Troubleshooting 254
System settings 255
Setting the time and date 255
MMI settings 255
Connection manager 257
System update 259
On-board Handbook 260
Sound settings 260
Volume settings 261
Restarting the MMI system 262
Notes on software licences 262
Safety 263
Safe driving 263
General notes 263
Correct sitting positions 265
Child seats 267
Fitting child seats 270
Pedal area 272
Stowing luggage safely 272
Seat belts 275
Why is it so important to use seat belts? . 275
Forces acting in a collision 276
How to wear seat belts properly 277
Belt tensioners 279
Airbag system 281
Description of airbag system 281
Front airbags 282
Side airbags 285
Head-protection airbags 286
Deactivating the front passenger's airbag 288
Service and care 289
Checking and topping up fluids . 289
Fuel 289
Filling the tank 290
Selective catalytic reduction (AdBlue/
DEF) 292
Emission control systems 295
Engine compartment 295
Engine oil 297
Cooling system 299
Brake fluid 301
Battery 302
Windscreen washer 303
Service interval display 304
Wheels 305
Tyres and rims 305
Tyre pressure loss indicator 309
Care of vehicle and cleaning 312
General notes 312
Washing the vehicle 312
Notes on cleaning and care 313
Taking the vehicle out of service 317
Self-help 318
Mobility 318
General notes
318

Equipment 318
Tyre repair kit 319
Changing a wheel 321
Spare wheel 324
Jump-starting 326
Tow-starting / towing away 328
Fuses and bulbs 332
Fuses 332
Bulbs 334
Changing headlight bulbs 336
Changing bulbs for rear lights 339
Technical data and accessories .. 340
Accessories and modifications
to the vehicle 340
Accessories, replacement parts and
repairs 340
Modifications 340
Radio transmitters and business
equipment 340
Technical data 342
Vehicle identification data 342
Explanation of technical data 342
Dimensions 343
Capacities 343
Weights 343
Engine data 344
4

FAQs
FAQs
Before you set off
- How do I adjust the seats?
^page
58.
- How do I adjust the steering wheel?

^>page
74.
- How does the selector lever for the automatic
gearbox work?
opage
86.
- How does the electro-mechanical parking brake
work?
^>page
82.
- How do I adjust the exterior mirrors?

^>page
53.
- How do I refuel my vehicle?
^>page
290.
- How do I refill the AdBlue tank on my diesel ve­
hicle?
•=>
page 293.
- How do I operate the windscreen wipers on
vehicles with rain sensor?
^>page
55.
- Where is the windscreen washer container?

•=>
page 297.
- How can I store the tyre pressures?

•=>
page
311.

- How do I drive with a trailer or caravan?

^>page
96.
Breakdowns and
emergencies
- How do I jump-start the vehicle?
^>page
326.
- Where can I find the warning triangle?

<=>page
318.
- Where can I find the first-aid kit?
•=> pagre
318.
- Where can I find the recommended tyre pres­
sures?
•=>
page 307.
- Which airbags are installed in my vehicle?

•=>
page 281.
- Where are the towline anchorages on the
vehi­

cle?
tapage
328.
- How can I release the tank flap manually?

•=>
page 291.
Useful functions
- How can I automatically control the distance to
the vehicle in front?
^>page
111,
Audi adap­
tive cruise control.
- How can I use the parking aid?
^>page
134.
- How can I have information projected onto the
windscreen?
^>page
25, Head-up display.
- How do I operate the main beam assist for the
headlights?
^>page
50.
- How can I drive off more easily?
opage
84,
Driving off with the hold assist.
- How can I stay in my lane more easily?

cépage
123, Audi active lane assist.
- How can I check the blind spot more easily
when changing lanes?
^>page
127, Audi side
assist.
- How can I adjust the brightness of the instru­
ment and display lighting?
^>page
53.
- How can I change the vehicle set-up in different
driving situations depending on my personal
mood and driving style?
^>page
131, Audi
drive select.
Using the infotainment
system
- How do I switch on the infotainment system
and adjust the volume?
^>page
152.
- How do I navigate through the infotainment
menus?
^>page
153,
How
to use the MMI.
- How can I enter letters and numbers by
hand­

writing?
^>page
155, MMI touch.
- How do I use the search function on the info­
tainment system?
^>page
160, Search func­
tion.
- How do I operate the infotainment system by
voice?
^>page
164.
- Which functions can I control using the buttons
on the steering wheel?
^page
15, Multi­
function steering wheel plus.
- How do I set the date and time?
^>page
255.

Communication

- How can I connect my mobile phone to the
handsfree telephone system?
opage
173.
- How can I charge my mobile phone battery
without a cable?
^>page
177, Using the Audi
phone box.
- How can I control certain apps on my smart-
phone via the infotainment system?

cépage
253, Audi smartphone interface. •
8

Instruments and controls

CO

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00
Fuel has entered the engine oil due to low out­
side temperatures or frequent short trips. Drive
until the engine is warm to allow the fuel to
evaporate out of the engine oil. When doing so,
avoid high engine speeds, full acceleration and
heavy engine loads.

m
Fuel tank system
P3 Please refuel
When the indicator lamp lights up for the first
time and the message appears, there are still
about 7 litres (front-wheeL drive) or about
8.5
li­
tres (four-wheel drive) of fuel left in the tank.

IM
Please refuel immediately
If the indicator lamp lights up and the message
appears, the fuel tank is almost empty. Drive to a
filling station without delay.

E3
Tank system malfunction! Please contact
workshop
There is a malfunction in the tank system.
Drive to a qualified workshop without delay and
have the fault rectified.

S
Driver's door*
For more information about filling the tank,
refer to
=>page
290.

Washer fluid level
Please add washer fluid
With the ignition switched off, top up the fluid
for the windscreen washer and headlight washer

system*
^>page
303.

!
Windscreen wipers
Windscreen wiper defective
There is a malfunction in the windscreen wipers.
Drive to a qualified workshop without delay and
have the fault rectified.

E]
Driver's door: fault. Shift to P before leaving
vehicle. See owner's manual
A malfunction has occurred in the driver's door.
Move the selector lever to position P (automatic
gearbox) to hold the vehicle.
Drive to a qualified workshop soon and have the
fault rectified.

- Bulb monitor
If the indicator Lamp
jjjj
Lights up, a bulb has

failed.
The message indicates the location of the

bulb.

Have the bulb replaced without delay.
Vehicle lights: malfunction!
There is a fault with the headlights or light

switch.
Drive to a qualified workshop soon and
have the fault rectified.

/\
WARNING
Bulbs are sensitive to pressure. The glass can
break when you touch the bulb, causing in­
jury.

ip
Dynamic headlight range control
Applies to: vehicles with dynamic headlight range control

13
Headlight range control: system fault!
There is a malfunction in the dynamic headlight
range control which may cause other road users
to be dazzled.
Drive to a qualified workshop without delay and
have the fault rectified.

•D
Audi adaptive light
Applies to: vehicles with Audi adaptive light

US
Audi adaptive light: system fault!
There is a malfunction in the adaptive light. The
dipped beam headlights will still be working nor­
mally.
Drive to a qualified workshop soon and have the
fault rectified.
35

Driving
instance when you can see that the next traffic
lights are red. This takes advantage of the engine
braking effect, reducing wear on the brakes and

tyres.
Emissions and fuel consumption will drop
to zero due to the overrun fuel cut-off.
Change gear early to save fuel
An effective way of saving fuel is to change up
quickly through the gears. Running the engine at
high rpm in the lower gears uses an unnecessary
amount of
fuel.

Applies to: vehicles with manual gearbox
Shift up to second gear as soon as possible. If
possible, we recommend shifting up to the next
gear at approx. 2,000 rpm.
Applies to: vehicles with automatic gearbox
Press the accelerator slowly and avoid using the

"kick-down"
feature.
Avoid driving at high speed
Avoid travelling at top speed. Fuel consumption,
exhaust emissions and noise Levels all increase
very rapidly at higher speeds. Driving at moder­
ate speeds will help to save
fuel.

Do not let the engine idle for longer than
necessary
Engine idling periods are automatically reduced
on vehicles with start/stop system*. On vehicles
without a start/stop system, it is worthwhile
switching off the engine at level crossings, for in­
stance, or at traffic lights with a long red phase.
The fuel saved after about 5 seconds can be
greater than the amount of fuel needed to re­
start a warm engine (the exact fuel saving de­
pends on the engine version).
The engine takes a very long time to warm up
when it is running at idling speed. Mechanical
wear and pollutant emissions are also especially
high during this initial warm-up phase. It is
therefore best to drive off immediately after
starting the engine. Avoid running the engine at
high speed.

o
Regular servicing
Regular servicing can establish a basis for good

iS
fuel economy before you start driving. A
well-

serviced engine gives you the benefit of im­
proved fuel efficiency as well as maximum relia­
bility and an enhanced resale value. A poorly
maintained engine can consume up to ten per­
cent more fuel than necessary.
Avoid short trips
The engine and emission control system need to
reach their proper working temperature in order
to minimise fuel consumption and emissions.
A cold engine uses disproportionately more
fuel.

The engine only reaches its working temperature
after about four kilometres, when fuel consump­
tion will return to a normal level.
Check tyre pressures
Always make sure the tyres are inflated to the
correct pressures
•=>page
306 to save
fuel.
If the
tyre pressures
are
just 0.5
bar
too Low, this can
increase the fuel consumption by as much as 5
%. Due to the greater rolling resistance, under-
inflation also increases tyre wear and impairs

handling.

Do not use winter tyres all through the year; they
will increase fuel consumption by up to 10 %.
Avoid carrying unnecessary loads
Every kilo of extra weight will increase the fuel
consumption, so it is worth checking the Luggage
compartment occasionally to make sure that no
unnecessary loads are being transported.
The roof carrier increases the air resistance of the
vehicle and should be removed when not in use.
This will save about 12 % of fuel at speeds of be­
tween 60 and 75
mph.

Save electrical energy
The engine drives the alternator to generate elec­
tricity. This means that fuel consumption rises
when more power is required for electrical equip­
ment. Switch off electrical equipment when it is
not needed. Electrical equipment which uses a
lot of electricity includes the blower (at a high
setting), the rear window heating and the seat

heating*.

73

Checking and topping up fluids

CO

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00
Emission controL
systems
Catalytic converter
Applies to: vehicles with petrol engine
The vehicle must only be used with unleaded pet­

rol,
otherwise the catalytic converter will be ir­
reparably damaged.
Never allow the fuel tank to run completely dry,
as the irregular supply of fuel can cause misfir­

ing.
This allows unburnt fuel to enter the exhaust

system,
which can cause overheating and dam­
age to the catalytic converter.
Diesel particulate filter
Applies to: vehicles with diesel engine
The diesel particulate filter can filter out almost
all soot particles contained in the exhaust gas. In
normal driving conditions the filter is self-clean­

ing.
Should the self-cleaning function of the filter
not be able to operate, e.g. when the vehicle is
continuously used only for short trips, the filter
becomes obstructed with soot and the indicator

lampnf°r
the
diesel particulate filter Lights up

cépage
34.
A WARNING
The exhaust system is very hot when the
vehi­

cle is being driven and after the engine has
been switched off.
- Never touch the tailpipes when they are hot
- risk of burns!
- Because of the high temperatures which can
occur in the emission controL system, do not
park the vehicle where the exhaust can
come into contact with flammable materials
under the car (e.g. on grass or at the forest
edge) - risk of fire!
- Do not apply any underseal agents in the
area around the exhaust system - risk of

fire!

Engine compartment
Working on components in the engine
compartment
Extra caution is necessary when working on com­
ponents in the engine compartment.
Always be aware of the danger of injury and
scalding as well as the risk of accident or fire
when working in the engine compartment (e.g.
when checking and refilling fluids). Always ob­
serve the warnings listed below and follow all
normal safety precautions. The engine compart­
ment of any motor vehicle is a potentially haz­
ardous area
oA-

A WARNING
- Switch off the engine.
-Switch off the ignition.

-Applythe
parking brake.
- On vehicles with manual gearbox place the
gear lever in neutral, on vehicles with auto­
matic gearbox move the selector lever to
position P.
- To avoid the risk of being scalded, never
open the bonnet if
you
see steam or coolant
escaping from the engine compartment.
Wait until no steam or coolant can be seen
before opening the bonnet.
- Wait for the engine to cool down.
- Keep children away from engine compart­
ment.
- Never spill fluids on a hot engine. These
flu­

ids can cause a fire (e.g. radiator
anti­

freeze).
- Take care not to cause short circuits in the
electrical system.
- 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!
- Do not unscrew the cap on the expansion
tank when the engine is hot. The cooling
system is under pressure.
- Protect face, hands and arms by covering
the cap with a large, thick rag to protect
against escaping coolant and steam.
295

Checking and topping up fluids
- Never remove the engine cover panel - risk
of burns!
- If any tests have to be performed with the
engine running, there is an extra safety risk
from the rotating parts, such as the drive

belts,
alternator and radiator
fan,
etc., and
from the high-voltage ignition system.
- Never touch the radiator fan. The electric
additional fan is controlled by temperature
and can start running without warning.
- Applies to vehicles with automatic gearbox:
Never open the throttle inadvertently (for
instance by hand from the engine compart­
ment) if
a
gear is engaged while the vehicle
is stationary with the engine running. The
vehicle will otherwise start moving immedi­
ately and could cause an accident.
- Observe the following additional warnings if
work on the fuel system or the electrical
system is necessary:
- Do not smoke.
- Never work near naked flames.
- Always keep an approved fire extinguisher
immediately available.
- Any work on the batteries and electrical sys­
tem in your vehicle entails a risk of injury
and chemical burns in addition to danger of
accident or fire.
For
this reason, you must
have the work carried out by
a
qualified
workshop.
© CAUTION
When topping up fluids make sure the correct
fluid is put into the correct filler opening. This
can otherwise cause serious malfunctions or
engine damage.
® For the sake of the environment
Inspect the ground underneath your vehicle
regularly so that any Leaks are detected at an
early stage. If
you
find spots of oil or other

fluids,
have your vehicle inspected in the
workshop.
© Note
located on the other side of the engine com­
partment.
Opening/closing the bonnet

The
bonnet is released from inside the vehicle.

Fig.
243 Detail of footwell on driver's side: Release lever

I

On right-hand drive vehicles* some of the
containers / reservoirs mentioned below are

Fig.
244 Unlocked bonnet: Lever
The wiper arms should be resting on the
wind­

screen:
make sure they are not in a raised
posi­

tion.
Otherwise the paint may get damaged.
Opening the bonnet

•
With the driver's door open, pull the lever un­
der the dashboard in the direction indicated
(arrow)
^>Fig.
243.

*•
Lift the bonnet slightly
•=> A-
•
Press the Lever under the bonnet in the direc­
tion indicated by the arrow
^>Fig.
244. This will
release the arrester hooks.

•
Open the bonnet.
Closing the bonnet
• To close the bonnet, pull it down to overcome
the spring pressure.

•
Then let it drop into the catches; do not press
down
|=>^.
•
296

Wheels
- Incorrect tyre pressures increase tyre wear
and adversely affect vehicle braking and
handling - risk of accident!
(7) CAUTION
Replace any lost valve caps to prevent dam­
age to the tyre valves.

(#) For
the sake of the environment
- Under-inflated tyres will increase the fuel
consumption.
- Driving with the tyre pressures adjusted to
the comfort setting* may also result in in­
creased fuel consumption.
©
We recommend always using the tyre pres­
sure setting
(T)
for partial loads and the set­
ting
(?) for
full loads.
Wheel bolts and rims
Wheel bolts
The wheel bolts should be clean and turn easily.
A special adapter is required to turn the
anti-

theft wheel bolts*
^
page 321.
Rims
Rims with a bolted rim flange* or bolted trim

parts*
consist of several components. A special
technique is applied to bolt these components
together. Never attempt to repair or dismantle
them
o
A-

A,
WARNING
If the wheel bolts have not been tightened or
serviced correctly, they can come loose, and
you could lose control of the vehicLe - risk of
accident! For the correct tightening torque,
refer to
^page
324, After changing a wheel.
- Make sure that the wheel bolts and threads
in the wheel hubs are always clean and free
from grease.
- Only use wheel bolts that are designed to
match the rims on your car.
- Always have damaged rims repaired by a
qualified workshop. Never attempt to repair
or dismantle rims yourself - risk of accident!
Winter tyres
In winter road conditions winter tyres will consid­
erably improve the car's handling. Due to their
type of construction (width, rubber compound,
tread pattern), summer tyres give less grip on ice
and snow.

•
Winter tyres must be fitted on all four wheels.

•
Only use winter tyres of the correct type ap­
proved for your vehicle.

•
Please note that the maximum permissible
speed for winter tyres may be lower than for
summer tyres
•=> A-
Your specialist retailer can
advise you of the maximum speed
for
your

tyres.

•
After fitting the wheels you must always check
the tyre pressures
^>page
307.
Winter tyres Lose their effectiveness when the
tread is worn down to a depth of 4 mm. The per­
formance of winter tyres is also severely impaired
by ageing, even if the tread is still much deeper
than 4 mm.
A WARNING
- Never exceed the maximum approved speed
for your tyres. This causes the tyres to over­
heat and can even result in a blow-out - risk
of accident!
- Always adapt your driving style to the pre­
vailing road and traffic conditions. Drive
carefully and reduce your speed on icy or
slippery roads. Even winter tyres lose their
grip on black ice.

(^)
For the sake of the environment
Summer tyres should be fitted again as soon
as possible; they give better handling on
roads which are free of snow and ice. They are
quieter, do not wear so quickly and reduce
fuel consumption. •
308

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