2021 AUDI Q2 Fuel

Checking and topping up fluids
Selective catalytic
reduction (AdBLue/DEF)
General notes
Applies to: vehicles with selective catalytic reduction
On vehicles with selective catalytic reduction, a
urea solution (AdBLue/DEF) is injected into the
exhaust system upstream of
a
NOx catalytic
con­

verter in order to reduce nitrogen oxide emis­

sions.
The urea solution is known under the name
of AdBlue or DEF (Diesel Exhaust Fluid). The term
AdBlue is used below.
The AdBlue is held in a separate tank on the
vehi­

cle.
AdBlue consumption is approximately 1.0 -
2.5% of diesel fuel consumption.
As soon as a message appears in the instrument
cluster display reminding you to refill AdBlue,
you must refill the AdBlue tank or have this done
by
a
qualified workshop
^>page
293.
Checking the remaining range
The remaining (estimated) range for the current

AdBLue
level can be displayed on the on-board
computer:
- Vehicles with analogue instrument cluster

•=>
page 20.
- Vehicles with virtual cockpit*
<$page
19.
-The instrument cluster display will
tell
you
how far you can drive before the tank runs
dry
•=>page
292. If the AdBlue tank runs
dry, the engine cannot be started again af­
ter you switch off the ignition.
-The use of
AdBLue for
the operation of this
vehicle is required by Law.
Instrument cluster display
Applies to: vehicles with selective catalytic reduction

The
display informs you if the AdBlue level is too
low or if a system malfunction occurs.
Low AdBlue level
You will be informed if the amount of AdBlue in
the tank falls below a certain
Level.
Add at least
the minimum (smaller) amount of AdBlue

shown:

S
Refill x
I
- x
I
AdBlue. Range: x km
This message tells you the maximum distance

that
you can drive with the remaining amount of
AdBlue. Refill AdBLue.

3
Refill x
I
- x
I
AdBlue! No restart in x km! See
owner's manual
This message tells you the maximum distance
that you can drive with the remaining amount of
AdBlue. Refill AdBlue. Otherwise, after driving
the maximum distance and switching off the en­

gine,
you will not be able to restart the car.
| Refill x
I
- x
I
AdBlue! No restart. See own­
er's manual
This message appears when there is no more
AdBlue left in the tank. Refill AdBlue. Otherwise,
you will not be able to restart the car after you
switch off the engine.
When the AdBlue in the tank reaches the
mini­

mum
level,
you must add AdBlue
^>page
293,
Preparations.
Filling the wrong fluid / system fault
If
you
fill the AdBlue tank with a fluid other than
AdBlue and the system detects that the wrong
fluid has been added or there is a system fault, a
driver message will appear.

|
AdBlue:
system fault. No restart in x km!
See owner's manual
This message tells you the maximum distance

that
you can drive. Drive to a qualified workshop
and have the fault rectified. Otherwise, after driv­
ing the maximum distance and switching off the
engine, you will not be able to restart the car.
|
AdBlue:
system fault. No restart! See own­
er's manual
This message appears if the system detects that
the tank has been filled with the wrong fluid or if
there is a system fault. Drive to the nearest quali­
fied workshop without delay and have the fault

rectified.
Otherwise, you will not be able to re­
start the car after you switch off the engine.
292

Checking and topping up fluids
Preparations
Applies to: vehicles with selective catalytic reduction

CO

<
O
rN
iv
rN
i—i

00

Fig.
241 Vehicle as seen from the rear right: Unscrewing
the AdBlue cap
The AdBlue filler neck is located immediately be­
side the diesel filler neck. Add at least the
amount of AdBlue displayed in the instrument
cluster. If
you
do not refill this amount of
fluid,

the system may not detect that the tank has
been refilled and it may not be possible to restart
the engine. You can refill with a maximum of 12

litres.

Important: A message in the instrument cluster
display informs you if
you
need to refill AdBlue.

•
Park the vehicle on a level surface.

•
Switch off the ignition.
• Open the tank flap
<^>page
290.

•
Unscrew the cap on the filler neck
anti-clock­

wise
^>Fig.
241.

*•
Refill AdBlue from a filler nozzle
^>page
293,
canister
^>page
294 or bottle
^>page
294.
A WARNING
AdBlue can cause irritation to the
skin,
eyes,
and respiratory organs. Wash thoroughly with
clean water should you come into contact
with this
fluid.
Seek medical assistance if nee­

ded.

© CAUTION
- Use only
AdBLue
that complies with the ISO
22241-1 standard. Do not mix AdBlue with
additives and do not dilute it with water.
- AdBlue must not be added to the diesel
tank, and diesel must not be added to the
AdBlue tank. Never start the engine if you
fill up with the wrong type of
fuel,
as this
could damage the tank system and the en­

gine.
Obtain professional assistance.
-AdBlue attacks surfaces such as paintwork,
plastic veneer and carpets. Remove spilt
flu­

id as soon as possible with a damp cloth and
plenty of water. If the AdBlue has already

solidified,
use warm water and a sponge.
Residues of AdBlue solidify after
a
while if
they are not removed and can damage the
affected surface.
- Do not keep refill bottles or canisters in the
vehicle, as AdBlue can leak and damage the
vehicle interior.
- Keep AdBlue away from clothing. Wash
thoroughly with clean water should you
come into contact with this
fluid.

\J
Note
Please follow the AdBlue manufacturer's in­
structions for storage and use.
Refilling AdBlue from a filler nozzle
Applies to: vehicles with selective catalytic reduction

•
Open the tank flap
^>page
290.

*•
Unscrew the cap on the filler neck
anti-clock­

wise
^>page
293, Fig. 241.

*•
Fill up with AdBlue until the first time the filler
nozzle cuts off the supply
•=>(]}.

•
Put the tank cap back on
opage
294, After re­
filling.
CAUTION
- The handle of the filler nozzle must point
downwards when filling the tank. Otherwise
the filler nozzle will not cut off the supply
automatically
^0
in Preparations on
page 293.
- You should stop refilling the first time the
filler nozzle automatically cuts off the sup­
ply. Otherwise the level of AdBlue in the
tank may be too high and AdBlue could
overflow
<=>©
in Preparations on page 293.
293

Checking and topping up fluids

CO

rN
IV
rN
•-i

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

Checking and topping up fluids
If
you
have to top up the oil between oil changes,
use the grades of oil specified in the table in ac­
cordance with VW standards.
You will need to know whether
- the vehicLe is being serviced based on the
flexi­

ble or fixed oil change service (see last service
record).
- the vehicle has a petrol or diesel engine (see
sticker on inside of fuel tank flap).
Petrol engines
Diesel engines
Oil Change Service
Flexible
VW 504 00
VW 507 00
Fixed
VW 502 00
With diesel
particulate
fil­

ter:
VW 507 00
Without diesel
particulate
fil­

ter:
VW 505 00
Audi recommends

ÇÇastrol
(MMMM'
FriOFSSskimL

Audi recommends LongLife high-performance
engine oil from Audi Genuine Parts
© Note
If the oil grades specified in the table are not
available, you can use one of the
folLowing

grades as a substitute. To prevent damage to
the engine, this should not be done more
than once between oil changes and no more
than 0.5 litres should be used.
- Petrol engines: ACEA A3 or API SN (API SM)
standard
- Diesel engines: ACEA C3 or API CJ-4 stand­
ard
© Note
The flexible oil change service is not available
for all models in all countries.
Checking and topping up the engine oil
level

The
oil dipstick differs depending on the type of
engine.

Fig.
246 Oil dipstick (examples): Checking engine oil level

Fig.
247 Engine compartment: Engine oil filler cap
(exam-

pLe)
Please refer to the safety notes
opage
295,
Working on components in the engine compart­
ment.
Checking engine oil level
- Park the vehicle on a level surface.
- Switch off the warm engine. Wait for
a
few mi­
nutes for the oil to drain back into the sump.
- Open the bonnet
opage
296.
-
PuLl
out the oil dipstick
^>page
297, Fig. 245,
wipe it with a clean cloth and insert it again,
pushing it in as far as it will go.
- Then pull the dipstick out again and check the
oil level
•=>
table on page 299.
- If the oil level is too Low, add more engine oil.
298

Checking and topping up fluids

CO

<
O
rN
iv
rN
i—i
o <
Markings on oil dipstick
^>Fig.
246

®

CD

(D

0
When the oil level is near the marking
(Î)

you must top up the engine oil. Please refer

to-=>®.

Do NOT add engine oil.
Do NOT add engine oil.
Drive to a qualified workshop without delay
and have the engine oil changed
•=>©.

Topping up the engine oil
- Unscrew the cap
"fc^
^>Fig.
247 from the
oilfill­

er opening
^>page
297, Fig. 245.
-Carefully add 0.5 Litres of suitable engine oil

^>
page 297.
- After two minutes check the oil level once

again.

- If the oil level is too low, add a smaller quantity
of engine oil. The level must always be below
the marking (5)
<^Fig.
246
<=>©.

- Screw the oil filler cap
*£/;
back on and push
the dipstick all the way in.
A WARNING
- Ensure that no engine oil comes into contact
with hot engine components when topping

up:
this could cause a fire.
- The oil filler cap must be properly closed to
prevent oil from squirting onto the hot en­
gine or exhaust system while the engine is
running - risk of fire!
- Wash your skin thoroughly if it comes into
contact with engine oil.
- The engine oil must never drop below the
marking®
^>Fig.
246- risk of engine dam­

age!

- When topping up the engine oil, make sure
that the oil level is not above the marking

@
^Fig.
246, as this may result in damage
to the catalytic converter or to the engine.
Do NOT start the engine. Contact a qualified
workshop to extract the engine oil if neces­
sary.
- Applies to vehicles which have an oil
dip­

stick with area
(3)^
Fig. 246: If you run your
vehicle on diesel fuel of poorer quality than
EN 590 standard
fuel,
the fuel can get into
the engine oil. In this case, the oil level
gradually rises and the quality of the engine
oil decreases. Once the oil level has reached
the marking
@
or the indicator lamp
E

has come on, the engine oil level must not
be corrected by extracting the surplus oil -

risk
of engine damage! The engine oil must
be changed
^>page
34.
- No additives should be used with engine oil.
Any damage caused by the use of such
addi­

tives would not be covered by the factory
warranty.
© For the sake of the environmen
- Never pour engine oil down drains or into
the ground.
-Always observe statutory requirements
when disposing of empty oil canisters.
© Note
Depending on
how
you drive and the condi­
tions in which the car is used, oil consumption
can be up to 0.5
Itr./lOOO
km. Oil consump­
tion is likely to be higher for the first 5,000

km.
The engine oil Level must be checked at
regular intervals, preferably when refuelling
and before setting off on a long trip.
Cooling system
Coolant
The engine cooling system is filled at the factory
with a mixture of conditioned water and coolant
additive. This coolant must not be changed.
The coolant level is monitored by a warning lamp
|
<^page
30. However, we recommend that it
should be checked occasionally.
If you do need to top up the coolant, use a mix­
ture of water and coolant additive. We recom­
mend mixing coolant additive with distilled wa­
ter.
299

Wheels

WheeLs

Tyres and rims
General notes

•
Inspect the tyres regularly for damage (cuts,
cracks or blisters, etc.). Remove any foreign
bodies embedded in the treads.

•
If
you
have to drive over
a
kerb or similar obsta­

cle,
drive very slowly and as near as possible at
a right angle to the kerb.
• Damaged rims or tyres must be replaced imme­
diately.

•
Keep grease, oil and fuel off the tyres.

•
Mark the wheels before taking them off so that
they rotate in the same direction when refitted.

•
When removed, the wheels should be stored
flat in a
cool,
dry and preferably dark place.

CO

<
O
rN
IV
rN
t-H
o <

(l)
CAUTION
- Please note that summer and winter tyres
are optimised for the prevailing road condi­
tions at different times of
year.
We recom­
mend that you use winter tyres during the
winter months. At low temperatures, sum­
mer tyres lose their elasticity and grip, and
braking performance also suffers as a re­
sult. Cracks can form in the tread block on
summer tyres if they are used at very cold
temperatures, and this can cause perma­
nent damage to the tyres. An increase in
rolling noise and tyre imbalance may result
from this damage.
- Machined, polished or chrome-plated rims
must not be used in winter conditions. The
process used to manufacture these types of
wheel rim does not provide adequate sur­
face protection against corrosion, and the
rims can be permanently damaged by road
salt or similar.
New wheels or tyres
It is best to have all servicing of wheels and tyres
performed by a qualified workshop, since they
have the necessary special tools and replacement
parts in addition to trained personnel.

•
New tyres do not yet give maximum grip. When
driving with new tyres, drive at moderate
speeds and be especially careful during the first
500 km.

•
All four wheels must be fitted with tyres of the
same type, size (rolling circumference) and
preferably the same tread pattern.
• Tyres should be replaced in pairs and not
indi­

vidually (i.e. both front tyres or both rear tyres
together).

•
We recommend the use of Audi Genuine Tyres.
If
you
wish to use other tyres, please note that
the actual size can differ from the nominal size
marked on the tyre
•=> /\.
•
If
you
wish to purchase a different combination
of rims and tyres than the ones fitted on the ve­
hicle during production, it is advisable to
con­

sult
a
qualified workshop beforehand
<=> /\.

The sizes of the rims and tyres approved
for
your
vehicle are listed in the vehicle's documents (e.g.

EC
Certificate of Conformity or COC
document1)).

The vehicle documents vary depending on the
country in which the vehicle is registered.
If the spare wheel* is
not
the same type as the
tyres fitted on the car (for example if the car has
winter tyres or wide-section tyres) you should on­
ly use the spare wheel* if
a
puncture occurs, and
then
only
for
a
short period of time. In this case,
please drive with extra care. Refit
a
normal road
wheel as soon as possible.
Applies to vehicles with four-wheel drive: All four
wheels must always be fitted with tyres of the
same type, make and tread pattern, as the drive-
line could otherwise be damaged by variations in
the wheel speeds. For the same reason, only use
a spare wheel* which has the same rolling cir­
cumference as the normal road wheels.
Manufacturing date
The manufacturing date is indicated on the tyre
sidewall (possibly only on the inner side of the
wheel): •

15 COC
= Certificate of conformity
305

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