sensor AUDI Q2 2021 Owner´s Manual

Intelligent technology
the standard tyres. Nevertheless, we still recom­
mend that winter tyres or all-season tyres should
be fitted on all four wheels when winter road
conditions are expected, mainly because this will
give a better braking response.
Snow chains
On roads where snow chains are mandatory, this
also applies to cars with four-wheel drive

Opcrge
309, Snow chains.
Replacing tyres
On vehicles with four-wheel drive, all four tyres
must have the same rolling circumference. Also
avoid using tyres with varying tread depths

tapage
305,
New wheels or tyres.
Off-roader?
Some models do not have enough ground clear­
ance to be used on rough tracks and uneven ter­

rain,
so it is best to avoid off-road driving.
A WARNING
- Even with four-wheel drive, you should al­
ways adjust your speed to suit the condi­

tions.
Do not let the extra safety provided
tempt you into taking any risks when driving
- this can cause accidents.
- The braking ability of your car is limited by
the grip of the tyres. In this respect, your
car is no different from a car without four-
wheel drive. So do not be tempted to drive
too fast on icy or slippery roads just because
the car still has good acceleration in these
conditions - risk of accident!
- On wet roads bear in mind that the front
wheels may start to "aquaplane" and lose
contact with the road if the car is driven too
fast. If this should happen, there will be no
sudden increase in engine speed to warn the
driver, as with a front-wheel drive car. So do
not drive too fast in the wet: adjust your
speed to suit the conditions (accident risk).

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Power management
This system helps to ensure reliable
starting

The
power management controls the distribu­
tion of electrical energy and thus helps to ensure
that there is always enough power available to
start the engine.
If
a
vehicle with a conventional electrical system
is left parked for
a
long time, the vehicle battery
will gradually lose its charge because certain
electrical equipment (such as the immobiliser)
continues to draw current even when the ignition
is off. In some cases there may not be enough
power available to start the engine.
Your vehicLe is equipped with an intelligent pow­
er management system to control the distribu­
tion of electrical energy. This significantly im­
proves reliability when starting the engine, and
also prolongs the life of the vehicle battery.
The main functions incorporated in the power
management system are battery diagnosis, re­
sidual current management and dynamic power
management.
Battery diagnosis
The battery diagnosis function constantly regis­
ters the condition of the vehicle battery. Sensors
detect the battery voltage, battery current and
battery temperature. This enables the system to
calculate the current power level and charge
con­

dition of the vehicle battery.
Residual current management
The residual current management reduces power
consumption while the vehicle is parked. It
con­

trols the supply of power to the various electrical
components while the ignition is switched off.
The system takes the battery diagnosis data into
consideration.
Depending on the power Level of the vehicle bat­
tery, the individual electrical components are
switched off one after the other to prevent the
vehicle battery from losing too much charge and
to ensure that the engine can be started reliably. •
149

Airbag system
Airbag system
Description of airbag
system
General notes on airbag system
The airbag is an integral part of the car's passive
safety system.
In conjunction with the three-point seat belts,
the airbag system gives the front occupants
addi­

tional protection for the head and chest in the
event of a severe frontal collision.
In a severe side collision the side airbags and the
head-protection airbags reduce the risk of injury
to the occupants
•=>
A-
In addition to their normal function of protecting
the occupants in a collision, the seat belts also
hold them in a position where the airbags can in­
flate properly and provide maximum protection.
The airbag system will only work with the
igni­

tion on. The airbag system is monitored electron­
ically; the airbag warning lamp indicates whether
the system is functioning properly.
The main parts of the airbag system are:
-The electronic monitoring system (control unit
and sensors)
- The two front airbags
- The front side airbags
-The head-protection airbags
- The indicator Lamp
Q
in the instrument cluster
There is a fault in the airbag system if the
warning lamp
- does not come on when the ignition is switched

on.

- does not go out about 4 seconds after the
igni­

tion is switched on.
- goes out and then comes on again after the ig­
nition is switched on.
- comes on or flickers while the car is moving.

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A WARNING
- The airbags are not a substitute for the seat

belts;
they are an integral part of the car's
overall passive safety system. The airbags
can only offer effective protection if the oc­
cupants are wearing their seat belts. For
this reason it is very important to wear the
seat belts at all times
^>page
275, Why is it
so important to use seat belts?.
The seat belts and airbags can only provide
maximum protection if the occupants are
seated correctly
^>page
58, Front seats.

•
If you do not wear a seat belt, if you lean

forward,
or are not seated correctly while
the vehicle is in motion, you are at greater
risk of injury should the airbag system be
triggered in an accident.
Components of the airbag system are loca­
ted in various parts of the vehicLe. If repairs
to other vehicle components make it neces­
sary to perform work on the airbag system
or to remove or install parts of the airbag

system,
this may cause damage to the air-
bag system. As a result, the airbags may not
inflate correctly or may not be triggered at
all in an accident situation. For this reason,
you should always have the work carried out
by a qualified workshop.
If a fault should occur in the airbag system,
have the system checked immediately by a
qualified workshop. Otherwise the system
may fail to trigger in an accident.
Do not attempt to modify components of
the airbag system in
anyway.

Never make any alterations to the front
bumper
or
the body.
Do not remove the front seats.
The airbag system can only be activated

once;
if the airbag has been triggered, the
system must be replaced. Should the airbag
system or airbag modules have to be re­

placed,
the qualified workshop carrying out
the replacement will document all details.

•
If any repair work is required
or
the airbag
and restraint systems have to be replaced,
have the work carried out by your authorised
Audi dealer or a qualified workshop which
adheres to the Audi factory standards. This
will minimise the risk of injury.
If you sell the vehicle, remember to pass on
the complete Service Wallet to the new
owner. If any of the airbags have been
281

Airbag system
deactivated, it is important that the new
owner is also given the relevant documents.
- The relevant safety requirements must be
observed when the vehicLe or components
of the airbag or belt tensioner systems are

scrapped.

When are the airbags triggered?
One or more airbag systems are triggered in se­
vere collisions, depending on the circumstances.
Factors determining the triggering response
It is not possible to define the exact triggering
response of the airbag system in all possible sit­
uations, since the circumstances in different
types of accident will vary considerably. Impor­
tant factors include, for example, the nature
(hard or soft) of the object which the car hits, the
angle of impact, vehicle speed and so on.
Whether the airbags are triggered depends
pri­

marily on the vehicle deceleration rate resulting
from the collision. By processing the signals from
the sensors Located in the vehicLe, the electronic
control unit is immediately able to evaluate the
severity of the collision and activate the restraint
systems accordingly. If the deceleration rate is
below the predefined reference value in the
con­

trol unit the airbags will not be triggered, even
though the accident may cause extensive damage
to the car. In these situations, the occupants are
protected by wearing the seat belts.
©
Note

The airbag may release a fine dust when it in­

flates.
This is quite normal and does not
mean there is a fire in the vehicle.
Front airbags
Important notes on front passenger's
airbag
AIRBAG

B

1<&

W


\fiS

cm

Fig.
226 Version 1, passenger's sun visor: Airbag sticker

AIRBAG

m

S

Fig.
227 Version 2, passenger's sun visor: Airbag sticker
A
sticker1)
with important information about the
front passenger's airbag is provided on the front
passenger's sun visor. Please refer to the safety
notes in the following chapters:
- Child seats and front passenger's airbag

^page
267, Safety notes for using child seats
- Safe distance from front passenger's airbag

tapage
284, Important safety notes on the
front airbag system
- Objects between front passenger and front pas­
senger's airbag
•=>page
284, Important safety
notes on the front airbag system

x)
Not available in all export vehicles.
282

Airbag system

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Side airbags
Description of side airbags

The
airbag system is not a substitute for the seat
belts.

Fig.
232 Side airbags: Location in driver's seat (example)
The side airbags are located in the backrest
pad­

ding of the front seats.
In conjunction with the three-point seat belts,
the side airbags give the occupants additional
protection for the whole upper part of the body

(i.e.
the chest, stomach and pelvis) in the event
of
a
severe side collision
•=> A
in Important safety
notes on the side airbag system on page 285.
In a side collision the side airbags reduce the risk
of injury to the areas of the body facing the im­
pact.
How the side airbags work
When fully inflated, the side airbags reduce the
risk of injuries to the upper part of the
body.

Fig.
233 Side airbags in inflated condition
In certain types of side collision, the side airbag
(front) is triggered on the impact side of the
vehi­

cle
^Fig.
233. Further airbag systems may also
be triggered, depending on the circumstances.
When the system is triggered, the airbag is filled
with propellant gas.
In order to provide the desired extra protection in
an accident, the airbags have to inflate extremely
rapidly (within fractions of
a
second).
The fully deployed airbags cushion the impact for
the occupants and help to reduce the risk of in­
jury to the upper part of the body on the side fac­
ing the door.
Important safety notes on the side airbag
system

There
are a number of safety points concerning
the airbag system which you should remember.
This will help to reduce the risk of injury in an ac­
cident.
WARNING
-If
you
do
not
wear
a
seat belt, if
you
Lean

forward,
or are not seated correctly while
the vehicle is in motion, you are at greater
risk of injury should the side airbags be
trig­

gered in an accident. This applies particular­
ly to children if they are not properly protec­
ted by
a
child restraint system.
- If children are not seated correctly, they are
at greater risk of injury should the airbag
system be triggered in an accident. This is
particularly the case if the child is travelling
on the front passenger's seat and the airbag
system is triggered in an accident. This
could result in serious or potentially fatal in­
jury
^>page
267, Child seats.
- It is important not to attach any accessories
(such as cup holders) to the doors. This
would impair the protection offered by the
front side airbags.
- The sensors for the airbags are located in
the front doors. You must therefore not
make any modifications to the doors or door
trim (e.g. retrofitting loudspeakers),
as
this
could impair the function of the side air-

bags.
Any damage to the front doors could
285

Airbag system

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The head-protection airbag system is triggered in
certain types of side collision
^>Fig.
235. Further
airbag systems may also be triggered, depending
on the circumstances.
When the system is triggered, the airbag fills
with a propellant gas and covers the entire area
in front of the side windows, including the door
pillars. The head-protection airbag inflates to
soften the impact if an occupant strikes parts of
the interior or objects outside the vehicLe with
their head. By reducing the head impact and re­
straining uncontrolled movement of the head,
the airbag also reduces the forces acting on the
neck.
In order to provide the desired extra protection in
an accident, the airbags have to inflate extremely
rapidly (within fractions of
a
second).
Important safety notes on the head-
protection airbags

There
are a number of safety points concerning
the airbag system which you should remember.
This will help to reduce the risk of injury in an ac­
cident.
A WARNING
- It is important to ensure that the area
around the openings for the head-protec­
tion airbags remains unobstructed at all

times,
so that the airbags can infLate prop­
erly if needed.
- The built-in coat hooks should only be used
for lightweight clothing. Do not leave any
heavy or sharp-edged objects in the pockets.
When using the coat hooks, do not hang the
clothes on coat hangers.
- The space between the passengers and the
head-protection airbags must never be oc­
cupied by children, other passengers or

pets.
Passengers should never lean out or
put
a
hand
or
arm out of the window while
the vehicle is in motion.
- Do not move the sun visors out to cover the
side windows if there is anything attached
to them (such as pens or
a
garage door
opener). These objects could cause injury if
the head-protection airbag is triggered.
The sensors for the airbags are Located in
the front doors. You must therefore not
make any modifications to the doors or door
trim (e.g. retrofitting loudspeakers),
as
this
could impair the function of the side air-

bags.
Any damage to the front doors could
Lead to faults in the system. Repairs or any
other work on the front doors must there­
fore always be carried out by
a
qualified
workshop.
Sun blinds fitted on the rear doors must not
obstruct or impair the airbags in any way.
If unsuitable accessories are installed near
the head-protection airbag, the protection
afforded by the airbag can be seriously im­
paired if the system is triggered. When the
head-protection airbag opens, parts of
these accessories could be thrown into the
vehicle and injure passengers
^>page
340.
Any work involving the head-protection air-

bags,
or removal and installation of the air-
bag components for other repairs (such as
repairs to the roof liner), must always be
performed by
a
qualified workshop. Other­
wise the airbag system may fail to work
properly.
287

Wheels

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All-weather tyres can also be used instead of
winter tyres. Please note that winter tyres
with the
A
symbol are required by law during
the winter season in some countries.
Snow chains
Snow chains will improve braking ability as well
as traction in winter conditions.
• Snow chains can be used on the front wheels
only. This also applies to vehicles with four-
wheel drive*.

•
Check that the snow chains are correctly seated
after driving for
a
few yards; follow the instruc­
tions given by the manufacturer.

•
Keep your speed below 50 km/h. Please ob­
serve the applicable local regulations.
Only use snow chains with fine-pitch links. The
links must not protrude more than 13.5 mm
from the tyres (including tensioner).
You must remove the snow chains on roads which
are free of snow; otherwise the vehicLe handling
may be impaired and the tyres may be damaged.
For technical reasons snow chains may only be
used on tyres with certain wheel rim/tyre combi­
nations.
Rim size
6.0]xl6 (steel)
Rim offset Tyre size
43 mm 205/60 R16
A WARNING

UnsuitabLe
or incorrectly mounted snow
chains can cause you to lose control of the ve­

hicLe-
risk
of accident!
© CAUTION
Snow chains can damage the rim/hubcap* if
they make direct contact with it. Remove the
hubcaps* beforehand. Use snow chains which
have a protective coating.
© Note
When driving with snow chains, it may help to
switch on off-road mode
^page
146.
Low-profile tyres
Applies to: vehicles with low-profile tyres
Your vehicLe is fitted with low-profile tyres* as
standard equipment. Low-profile tyres have a
lower sidewall and provide a wider tread surface
and rim diameter than other wheel/tyre combi­
nations. This makes the car's handling more

agile.
However, the ride may be Less comfortable
on poor-quality roads and tracks, and rolling
noise may be louder.
Low-profile tyres can be damaged more quickly
than standard tyres, for example by heavy jolts,
potholes, manhole covers, speed humps and

kerbs.
It is therefore particularly important to
ensure that they are inflated to the correct pres­
sure
o
page 307.
Drive with particular care on poor-quality roads
to ensure that you do not damage the rims and

tyres.

Make sure to check your wheels regularly (every
3,000 km) for damage such as blisters/tears on
the tyre sidewalls or deformations/cracks on the

rims.

After a heavy jolt, or if any damage occurs, you
should have the rims and tyres checked and if
necessary replaced by
a
qualified workshop.
Tyre wear occurs more quickly on low-profile
tyres than on standard tyres.
Summer tyres are not suitable for cold condi­

tions,
snow or ice. Use winter or all-season tyres
when driving in these conditions
^>page
308.
Tyre pressure loss
indicator
Tyre pressure loss indicator lamp
Applies to: vehicles with tyre pressure loss indicator

The
tyre pressure loss indicator in the instrument
cluster informs the driver if the tyre pressure is
too low or a system malfunction has occurred.
The tyre pressure loss indicator makes use of the
ABS sensors to compare the rolling circumfer­
ence and the vibration of the tyres. If changes in
the inflation pressure are detected on one or •
309

Care of vehicle and cleaning
Care of vehicLe and
cleaning
General notes
Regular and careful care helps to maintain the
value of the vehicLe. This may also be one of the
requirements for upholding any warranty claims
in the event of corrosion or paint defects.
Qualified workshops carry stocks of suitable car
care products. PLease
foLLow
the instructions for
use on the packaging.
A WARNING
- Cleaning products and other materials used
for car care can damage health if misused.
- Car care products can contain toxic substan­
ces and must always be kept in a safe place
out of reach of children.

+) For
the sake of the environment
- Please choose care products that are not
harmful to the environment.
- Surplus cleaning materials should not be
disposed of together with ordinary house­
hold waste.
Washing the vehicle
The longer residues like insects, bird droppings,
resinous tree sap or road salt are alLowed to re­
main on the vehicle, the more damage they can
do to the paintwork. High temperatures (for in­
stance in direct sunlight) further intensify the
damage.
Before washing, soak heavy dirt with plenty of
water.
Stubborn dirt, such as bird droppings or resinous
tree sap, is best removed with plenty of water
and a micro-fibre cloth.
After the period when salt is put on the roads,
have the underside of the vehicLe washed thor­
oughly.
High-pressure cleaners
When cleaning the vehicle with a high-pressure
cleaner, always follow the operating instructions
for the equipment. This applies particularly to
the operating pressure and the spraying dis­

tance.
Do not point the spray jet directly at the
seals on the windows, doors, boot lid, bonnet or
panorama sun roof*, or at the tyres, rubber ho­

ses,
insulating material, sensors* or camera
len­

ses*.
Maintain a distance of at least 40 cm.
Do not use a high-pressure cleaner to remove
snow and ice.
Never use high-pressure cleaners with a round-
jet nozzle or "dirt blasters".
The water must not be hotter than 60 °C.
Automatic car washes
Spray the vehicle with water before washing.
Ensure that the windows and panorama sun roof*
are closed and that the windscreen wipers are
switched off. Follow the car wash operator's rules
and recommendations, especially if any accesso­
ries are attached to your vehicle.
If possibLe use a brushless car wash.
Washing by hand
Clean the car with a soft sponge or brush, start­
ing on the roof and working down. Use solvent-
free cleaning agents.
Washing matt-painted vehicles by hand
To avoid damaging the paintwork when washing
the car, first remove any dust, sand and grit. In­

sects,
grease stains and fingerprints are best re­
moved using a special cleaning agent for matt-
painted surfaces.
Apply the product with a micro-fibre cloth. Do
not apply too much pressure to avoid damaging
the paintwork.
Rinse the car thoroughly with water. Then clean
the car with a neutral shampoo and a soft micro-
fibre cloth.
Rinse the car with lots of water again and then
let it dry in the air. Remove any water stains with
a chamois. •
312

Care of vehicle and cleaning

A.
WARNING
- Follow the rules and recommendations of
the car wash operator and do not wash the
vehicLe with the ignition switched on - risk
of accident!
- To avoid cutting yourself on sharp metal

parts,
always wear suitable protection when
cleaning the underside of the car or inside
the wheel arches.
- After the car has been washed, the full brak­
ing effect can be delayed by moisture (or in
winter by ice) on the discs and brake pads -
risk of accident! The brakes should be dried
by pressing the pedal to restore full braking
effect.
© CAUTION
- Before washing the vehicle in an automatic
car wash, please make sure to retract the
exterior mirrors to prevent damage. Always
use the electrical power controL to fold the
mirrors in/out on vehicles with electrically
retractable exterior mirrors*.
- Do not wash the vehicle in direct sunlight -
otherwise the paint can be damaged.
- Do not use insect sponges or abrasive
household sponges, etc. - they can damage
the surfaces.
- Matt-painted vehicle parts:
- Do not use polish or wax - otherwise the
paintwork can be damaged.
- Never use car-wash programmes that in­
clude wax coatings. This could spoil the
matt finish.
- Do not attach any stickers or magnet la­
bels to matt-painted parts as these could
damage the paintwork when they are re­

moved.

® For the sake of the environment
The car should only be washed in special wash

bays.
This prevents oily water from getting in­
to the public drains.

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Notes on cleaning and care
For cleaning and care of individual components
on the vehicle, please refer to the tables below.
These are recommendations only. If
you
have
Cleaning the exterior
special questions or certain components are not

listed,
please ask your qualified workshop. Please
also refer to the notes
•=> A-

Component(s) Situation
Wiper blades
Headlights/
rear lights
Sensors/
camera lenses
Wheels
Tailpipes
Ornamental trim/
mouldings
Dirt/deposits
Dirt/deposits
Dirt/deposits
Snow/ice
Road salt
Brake dust
Road salt
Dirt/deposits
Remedy

^>page
56, Cleaning the wiper blades
Soft sponge with mild
detergenta)

Sensors: soft cloth with solvent-free cleaning agent
Camera lenses: soft cloth with alcohol-free cleaning agent
Small brush/solvent-free de-icer spray
Water
Acid-free cleaning agent
Water; suitable stainless steel cleaning product if necessa­
ry
Mild
detergenta);
suitable stainless steel cleaning product
if necessary
313

Care of vehicLe and cleaning

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Component(s)
Fabrics,
leatherette,
Alcantara
Natural leather
Carbon parts
Situation
Surface dirt
Water-based stains,

e.g.
coffee, tea,

blood,
etc.
Fat-based stains, e.g.

oil,
make-up, etc.
Special dirt/stains,

e.g.
ballpoint pen,
nail varnish, disper­
sion paint, shoe

cream,
etc.
Fresh dirt/stains
Water-based stains,

e.g.
coffee, tea,

blood,
etc.
Fat-based stains, e.g.

oil,
make-up, etc.
Special dirt/stains,

e.g.
ballpoint pen,
nail varnish, disper­
sion paint, shoe

cream,
etc.
Care of vehicle
Dirt/deposits
Remedy
Vacuum cleaner
Absorbent cloth and mild
detergent3'

Apply mild detergent3', dab off dissolved grease or colour
particles with absorbent cloth; if necessary treat with wa­
ter
Special stain remover (dab off with absorbent fabric); if
necessary treat with mild
detergent3'

Cotton cloth with mild
detergent3'

Fresh stains: absorbent cloth
Dried stains: stain remover suitable for leather
Fresh stains: absorbent cloth and suitable stain remover
for leather
Dried stains: grease removal spray
Stain remover suitable for leather
Regularly apply leather-care cream with ultra-violet pro­
tection and impregnating compound; if necessary use spe­
cial colour leather cream
Same treatment as plastic parts

a^
Mild detergent: not more than two tablespoons of pH-neutral
A WARNING
Do not use water-repellent coatings on the
windscreen. In bad visibility conditions such
as Light
rain,
Low sun or when driving at night
these coatings can cause increased dazzle,
which is a serious safety hazard. Such coat­
ings can also cause the wiper blades to
jud­

der.
© CAUTION
-
Headlights/rear
lights
- Never clean the headlights/rear lights
with a dry cloth or sponge.
detergent to one litre of water
- Do not use cleaning agents containing al­

cohol.
This could cause the glass to crack!
- Wheels
- Do not use paint polish or other abrasive
agents.
- If the protective paint coating on the
wheel rim is scratched or damaged by
stone chips etc., the damaged area should
be touched up without delay.
-Sensors/camera lenses
- Never remove snow and ice from the cam­
era lens using warm or hot water - danger
of cracks appearing on the lens.
315

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.

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