2021 AUDI Q2 ECU

Seat belts

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A WARNING
During pregnancy, women should especially
make sure to wear the lap portion of the seat
belt as low as possible across the hips so that
there is no pressure on the stomach.
Seat belt height adjustment
Applies to: vehicles with seat belt height adjustment
Seat belt height adjusters can be used to adjust
the height of the shoulder portion of the seat

belt.

V:

Fig.
224 Belt height adjustment - top guide fitting
The shoulder section of the belt should be fitted
across the centre of the collar bone close to the
body
^^
in Adjusting the seat belts on
page 278.

*•
Take hold of the guide fitting and slide it up­
wards
@,
or

•
Compress the adjuster
(T)
and slide the guide
fitting downwards
@.

•
After adjusting, pull the shoulder belt sharply
to check that the catch on the guide fitting is
engaged securely.

(J)
Nol

- It is also possible to adjust the height of the
front seats to obtain the best position for
the front seat belts.
-The shoulder section of the belt should be
fitted across the centre of the collar bone
close to the body. The lap belt must be worn
tightly over the hips. It must not be
posi­

tioned over the stomach. Pull the belt tight
if necessary to take up any slack.
Taking off the seat belts

The
red button releases the belt from the buckle.

Fig.
225 The latch plate of the belt springs out of the
buckle

•
Press the red button in the seat belt buckle.
The latch plate will spring out of the buckle.

•
Guide the belt back by hand so that it is taken
up by the retractor.
Belt tensioners

Reversible
belt tensioners*
The following functions are available when seat
belts with reversible belt tensioners are buckled:
- The seat belts can be tensioned reversibly in
certain situations
^>page
120.
- The seat belts can be also be tensioned reversi­
bly in light collisions.
Pyrotechnic belt tensioners*
Seat belts with pyrotechnic belt tensioners are
tensioned automatically in severe collisions, de­
pending on the circumstances. This helps to re­
duce the forward motion of the occupants.

A,
WARNING
- False activation of the
belttensioner
is pos­

sible.

- Any work on the tensioner system or remov­
al and installation of system components
for other repairs must be performed by a
qualified workshop.
- The pyrotechnic system can only be activa­
ted once. If the pyrotechnic belt tensioners
have been activated at any time, the system
must be replaced.
279

Checking and topping up fluids
Refilling AdBlue from a canister
Applies to: vehicles with selective catalytic reduction

#

Fig.
242 Canister with screw-on hose
• Take the cap off the refill canister
o^/n
Prep­
arations on page 293,
<=>(T)
in Preparations on
page 293.

•
Screw the end of the hose (î) clockwise onto
the opening on the canister®.

•
Remove the cap
@
from the other end of the
hose®.

•
Fit the end of the hose (2) onto the filler neck
on the vehicle and turn clockwise as far as the
stop to secure.
• Lift the canister and then tilt it. Keep it tilted
until empty or until no more fluid runs into the
tank.

•
Remove the canister and screw the tank cap
back on
^>page
294, After refilling.
CAUTIO
Use only refill canisters of the correct type ap­
proved for your vehicle. AdBlue may Leak out
if
you
use another system.
© Note
- Your qualified workshop can tell you which
refill canisters are approved
for
your
vehi­

cle.

- Approved refill canisters contain about 5 li­
tres of AdBlue.
Refilling AdBlue from a bottle
Applies to: vehicles with selective catalytic reduction

•
Take the cap off the refill bottle
<=>^
in Prepa­
rations on page 293,
•=>(?)
in Preparations on
page 293.

•
Screw the bottle clockwise onto the filler neck
as far as it will go.

•
To empty the bottle, lightly press the bottom
of the bottle. Keep pressing the bottom of the
bottle until the bottle is empty, or until no
more fluid runs into the tank.

•
Remove the bottle and screw the tank cap back
on
<=>page
294, After refilling.
(J) CAUTION
Use only refill bottles of the correct type ap­
proved for your vehicle. AdBlue may leak out
if
you
use another system.
- Refill bottles are available from qualified
workshops.
- Approved refill bottles contain about 1.9 Li­
tres of AdBlue.
After refilling
Applies to: vehicles with selective catalytic reduction
Closing the filler neck

•
Screw the AdBlue cap clockwise onto the filler
neck until the AdBlue cap clicks audibly
•=> /\
in
Preparations on page 293,
^>(T)in
Prepara­
tions on page 293.

•
Press the left side of the flap to close it (you
should hear it click into place).
After refilling
The vehicle must be driven so that the system
can detect the AdBlue which has been added.
This process can take several minutes.
• If the AdBlue tank had run dry and a range of
0 km was shown on the display, switch on the
ignition for approx. 30 seconds before starting
the engine.
© Note
AdBlue can freeze in the tank at very Low
tem­

peratures. In this case, the system will not
detect AdBlue when you refill and will contin­
ue to indicate a Low
AdBLue
Level. The mes­
sage will disappear as soon as the tank has

thawed.

294

Checking and topping up fluids
A WARNING
- 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.
- For safety reasons the bonnet must always
be completely closed when the vehicle is

moving.
After closing it always check that it
is properly secured. It should not be possi­
ble to
lift
the front edges of the bonnet.
Should you notice that the bonnet is not
safely secured when the vehicle is moving,
stop the vehicle immediately and close the
bonnet properly, otherwise it could cause an
accident.
Engine compartment layout
Main components for checking and refilling

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Fig.
245 Typical locations of fluid containers, engine oil dipstick and engine
oilfiller
cap

(T)
Coolant expansion tank
C=t)
<^page
300
(2) Engine oil dipstick
Opage
298
(3) Engine
oilfiller
cap
(*&*)
Opage
298
(4) Brake fluid reservoir (CO))
^>page
301
(5) Vehicle battery (+) beneath a cover

^page
303,
^page
326
(?) Earth
point
on
body
(-)•=>page
303,

^>page
326
(7) Windscreen
washer
container
(<3?)
^>page
303

(§)
Fuse box
^page
332
The positions of the oil
dipstick
(2) and the en­
gine
oilfiller
cap(D^F/'g.
245 may be different
on some engine versions.
Engine oil
Choosing the correct engine oil grade
The service interval display in the instrument
cluster of your vehicle will inform you when it is
time for an oil change. We recommend having
the oil changed by
a
qualified workshop. •
297

Mobility
Mobility
General notes

•
If your vehicle experiences technical problems,
stop the car well away from moving traffic. If
you have a flat tyre, you should park the car on
a level surface. Be particularly careful if you are
on a slope.

•
Apply the parking brake.

•
Switch the hazard warning lights on.

•
Put on a high-visibility vest if one is available.

•
Place the warning triangle in a visible location

tapage
318.

•
Instruct all passengers to leave the car when it
is safe to do so. They should wait in a safe place
(for instance behind the roadside crash barrier).

A
WARNING
You should note the procedure described
above for your own safety and that of other
road users.
Equipment
Warning triangle
Applies to: vehicles with warning triangle

w®

Fig.
254 Open boot lid: Warning triangle
The factory-supplied warning triangle is attached
to the inside of the boot lid.
• To open the cover, turn the catch
©
and swivel
the cover downwards (5).

• Pull
the warning triangle out of the retainer.
The retainer on the boot lid is specifically de­
signed to hold the warning triangle supplied as
an Audi Genuine Accessory.
First-aid kit
Applies to: vehicles with first-aid kit

V

Fig.
255 Right rear door: Stowing the first-aid kit (exam
Make sure that you know where the first-aid kit is
stowed before beginning your journey.
Fire extinguisher
Applies to: vehicles with fire extinguisher
The factory-fitted fire extinguisher is located in
the footwell on the driver's or front passenger's
side (secured in a holder).

•
Open the straps to remove the fire extinguish­
er.

•
To secure the fire extinguisher, put it in the
holder and fasten the straps.
Check how the fire extinguisher works before you
need to use it. The instructions for use are shown
on the fire extinguisher.
A WARNING
If the fire extinguisher is not secured properly
it could be catapulted through the vehicle
during driving and braking manoeuvres or in
the event of an accident. This poses a risk of
injury to occupants.
© Note
- The fire extinguisher must be replaced with
a new one after use or once it has reached
its expiry date.
- The fire extinguisher must comply with le­
gal requirements.
318

Mobility

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Removing the spare wheel
• Lift the floor panel up by the plastic handle un­
til the panel is fixed in position behind the re­
taining tabs on the two side sections
©
*
Fig.
266.
• Applies to vehicles with bass box in spare wheel

well:
Remove the bass box*. Please first check
the connector to establish which bass box is fit­
ted in your vehicle: version 1)
*page
325 or
version 2)
*page
326.
• Turn the plastic knob anti-clockwise.
• Take out the spare wheel.
Snow chains
For technical reasons, snow chains must not be
used on the compact temporary spare wheel.
Should you have a puncture on one of the front
wheels when using snow chains, fit the compact
temporary spare wheel in place of one of the rear
wheels. You can then attach the snow chains to
the wheel taken from the rear and use this wheel
to replace the punctured front wheel.
A WARNING
- The tyre pressure must be checked as soon
as possible after fitting the spare wheel - an
incorrectly inflated tyre can increase the risk
of accident. You can find the tyre pressures
here
*page
307, Fig. 253.
- Do not drive faster than 80 km/h when the
compact temporary spare wheel is fitted -
higher speeds can cause an accident.
-Avoid heavy acceleration, hard braking and
fast cornering when the compact temporary
spare wheel is fitted - risk of accident!
- Never use two or more compact spare tyres
at the same time - risk of accident!
- No other type of tyre (normal summer or
winter tyres) may be fitted on the compact
temporary spare wheel.
Removing the bass box (version 1)
Applies to: vehicles with bass box in spare wheel well

You
must remove the bass box before you can
take out the spare wheel*.

«

Fig.
268 Spare wheel
well:
Bass box
Removing the bass box
• Lift the floor panel
<=>page
324, Fig. 266.
• Compress the retaining
tabs©*Fig.
268 on
the connector.
• Unplug the connector © and move the discon­
nected cable clear to one side.
• Unscrew
bolt©.

• Carefully take out the bass box.
Installing the bass box
• Carefully place the bass box in the well of the

rim.
Make sure that the inscription "FRONT" on
the bass box points to the front of the vehicle.
• Plug the connector back in again.
• Secure the bass box with the screw.
• Fold the floor panel back down.

(T) Note

The bass box can be fitted even if there is no
wheel in the spare wheel
well.

325

Mobility
Removing the bass box (version 2)
Applies to: vehicles with bass box in spare wheel well

You
must remove the bass box before you can
take out the spare wheel*.
f

Fig.
269 Spare wheel
well:
Bass box
Removing the bass box
• Lift the floor panel
*page
324, Fig. 266.
•
Pull
the
catch
Q^F/g.
269 towards the cable.
• Press the retaining tab © down.
• Unplug the connector © and move the discon­
nected cable clear to one side.
• Unscrew
bolt
(4).
• Carefully take out the bass box.
Installing the bass box
• Carefully place the bass box in the well of the

rim.
Make sure that the inscription "FRONT" on
the bass box points to the front of the vehicle.
• Plug the connector back in again.
• Push the catch © back towards the bass box.
• Secure the bass box with the screw.
• Fold the floor panel back down.
Note
The bass box can be fitted even if there is no
wheel in the spare wheel
welL.

Jump-starting
Before starting the engine
If
necessary,
the engine can be started by con­
necting it to the battery of another vehicle.
If the engine fails to start because of
a
dis­
charged battery, the vehicle battery can be
con­

nected to the battery of another vehicle to start
the engine. Suitable jump leads are required.
Both vehicle batteries must be rated at 12 V. The
capacity (Ah) of the booster battery should not
be significantly lower than that of the discharged
battery.
Jump leads
The jump Leads must be heavy enough to carry
the starter current. Refer to the details given by
the manufacturer.
Only
use
jump leads with insulated battery
clamps.
Positive cable - usually red.
Negative cable - usually black.
WARNING
- When it is discharged the vehicle battery
can freeze at temperatures around 0°C. A
frozen vehicle battery must first be thawed
out before connecting the jump leads - risk
of explosion and chemical burns! After
jump-starting the vehicle, drive to a quali­
fied workshop without delay and have the
vehicle battery checked.
- The engine compartment is a potentially
hazardous area and working here can lead
to serious injuries. Before carrying out any
work in the engine compartment please
read and observe the warnings
*page
295.
- Incorrect handling of the jump leads may
result in the vehicLe battery exploding (risk
of serious injury). Please observe the follow­
ing rules to minimise the risk of injury:
- The non-insulated parts of the battery
clamps must not be allowed to touch. The
jump lead attached to the positive terminal
must not touch metal parts of the vehicle:
this can cause short circuiting.
- Position the jump leads in such a way that
they cannot come into contact with any
moving parts in the engine compartment.
- Do not lean over the vehicle battery - risk of
chemical burns!
- The screw plugs on the battery cells must be
screwed in firmly.
326

Fuses and bulbs
You must only replace a bulb with a bulb of the
same type. Information regarding e.g. the wat­
tage can be found on the glass or base of the

bulb.

The description for changing the bulb refers to
the Left rear light unit; the procedure for the
right rear Light unit is similar.
You can change the
foLLowing
bulbs yourself:
Changing bulb for turn signals
Applies to: vehicles with halogen headlights
Bulb (12 V)

©Tail
light
© Brake light
© Reversing Light

(4)
Turn signal

©Rearfog
light3'

Version
W16W
P21W
W16W
PY21W
W16W

a'
The bulb for the rear fog light is fitted on one side only. It
is located on the left side on LHD vehicles and on the right
side on RHD vehicles.
Changing headlight
bulbs
Removing cover (engine compartment)
Applies to: vehicles with halogen headlights

^

Fig.
281 Headlight: Cover for turn signal and main beam
headlight
• Switch off the ignition and the lights.
• Open the bonnet.
• Turn the headlight cover anti-clockwise

*Fig.
281 and remove it
*/^
in General notes
on page 334.
• Change the bulb for the turn signal

*page
336 or the main beam headlight

*page
337.

Fig.
282 Headlight: Plastic connector for turn signal

Fig.
283 Headlight: Fitting plastic connector for turn
sig­

nal
Removing
• Pull the plastic connector together with the
buLb out of the headlight housing
*Fig.
282.
• Disconnect the plastic connector from the base
of the bulb
*^
in General notes on page 334.
Installing
• Push the new bulb into the plastic connector so
that it is securely seated
*^
in General notes
on page 334.
• Insert the bulb into the headlight housing.
•
Fit
the plastic connector
*Fig.
283 into the
housing and press it in until the side catches
engage.
• Put the cover back on.
• Check whether the new bulb is working.
336

Fuses and bulbs

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Changing bulb for main beam headlight
Applies to: vehicles with halogen headlights
Removing cover (wheel housing liner)
Applies to: vehicles with halogen headlights

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Fig.
284 Headlight: Plastic connector for main beam
headlight

Fig.
285 Headlight: Fitting plastic connector for main
beam headlight
Removing
• Pull the plastic connector together with the
bulb out of the headlight housing
*Fig.
284.
• Disconnect the plastic connector from the base
of the bulb
^/K
in General notes on page 334.
Installing
• Push the new bulb into the plastic connector so
that it is securely seated
<=>^
in General notes
on page 334.
• Insert the bulb into the headlight housing.
• Press the plastic connector
*Fig.
285 into the
housing until it engages.
• Check that the bulb is seated correctly by look­
ing through the headlight itself.
• Put the cover back on.
• Check whether the new bulb is working.

Fig.
286 Wheel housing liner: Access to daytime running
light and dipped headlight bulbs

Fig.
287 Headlight: Cover for daytime running light and
dipped headlight
• Turn the steering all the way to the right.
• Switch off the ignition and the lights.
• Reach into the opening
©*Fig.
286 and pull
in the direction of the arrow to open the cover
in the wheel housing Liner.
• Move the metal bar downwards -arrow-

*Fig.
287 and remove the plastic cover
*/^
in
General notes on page 334.
• Change the bulb for the daytime running light
©
*
page 338
or
the dipped headlight©

*
page 338.
337