2020 AUDI A3 brake rotor

8V2012721BK
Driving

Manually switching the Start/Stop system
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Applies to: vehicles with Start/Stop system
If you do not wish to use the system, you can
switch it off manually.
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Fig. 93 Center console: Start/Stop system button
> To switch the Start/Stop system off/on manual-
ly, press the [| button. The LED in the button
turns on when the system is switched off.
G) Tips
If you switch the system off during a Stop
phase, the engine will start again automati-
cally.
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Applies to: vehicles with Start/Stop system


Start/stop system: deactivated. Please start
engine manually
This message appears when specific conditions
are not met during a Stop phase. The Start/Stop
system will not be able to restart the engine. The
engine must be started manually.
Start/stop system: malfunction! Function
unavailable
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to
have the malfunction corrected.
Brakes
General information
You can apply the vehicle's brakes using the brake
pedal.
Operating noise
Noises may occur when braking depending on the
speed, braking force, and outside conditions such
as temperature and humidity.
Braking effect
The response time from the brakes depends on
the weather and environmental conditions. If the
brake system becomes damp, for example after
driving in heavy rain, the braking effect may be
delayed. Other factors that could temporarily in-
crease the response time of the brakes include:
— Wet conditions
— Low temperatures, ice, and snow
— Roads covered in salt
— Dirty brake pads
To ensure the optimal braking effect, the brake
system is cleaned at regular intervals. This is
done by applying the brake pads to the brake ro-
tors for a short period of time when driving at
high speeds when the windshield wipers are
switched on.
Corrosion
Corrosion may form on the brake rotors if there is
no heavy braking, if the vehicle is not driven for
long periods of time, or if the vehicle is not driv-
en frequently or for long distances. This can
cause noises when braking as well as an uneven
braking effect. In this case, braking heavily sever-
al times while driving at high speeds can clean
the brake rotors > A\.
Brake pads
New brake pads do not achieve their full braking
effect during the first 250 miles (400 km). They
must be “broken in” first. However, you can com-
pensate for the slightly reduced braking force by
pressing firmly on the brake pedal. Avoid heavy
braking during the break-in period.
Brake pad wear depends largely on the way the
vehicle is driven and on operating conditions.
Brake pad wear increases when driving frequently
in the city or short distances or when using a very
sporty driving style. >
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8V2012721BK
Care and cleaning


ZA\ WARNING
—To reduce the risk of accidents, only wash
the vehicle when the ignition is off and fol-
low the instructions from the car wash oper-
ator.
—To reduce the risk of cuts, protect yourself
from sharp metal components when wash-
ing the underbody or the inside of the wheel
housings.
— After washing the vehicle, the braking effect
may be delayed due to moisture on the
brake rotors or ice in the winter. This in-
creases the risk of an accident. The brakes
must be dried with a few careful brake appli-
cations.

() Note
— If you wash the vehicle in an automatic car
wash, you must fold the exterior mirrors in
to reduce the risk of damage to the mirrors.
Power folding exterior mirrors* must only
be folded in and out using the power folding
function.
—To reduce the risk of paint damage, do not
wash the vehicle in direct sunlight.
—To reduce the risk of damage, do not wash
decorative decals* with a pressure washer.
—To reduce the risk of damage, do not wash
the power top* with a pressure washer.
—To reduce the risk of damage to the surface,
do not use insect removing sponges, kitchen
sponges, or similar items.
— When washing matte finish painted vehicle
components:
— To reduce the risk of damage to the sur-
face, do not use polishing agents or hard
wax.
— Never use protective wax. It can destroy
the matte finish effect.
— Do not place any stickers or magnetic
signs on vehicle components painted with
matte finish paint. The paint could be
damaged when the stickers or magnets
are removed.
(@) For the sake of the environment
Only wash the vehicle in facilities specially de-
signed for that purpose. This will reduce the
risk of dirty water contaminated with oil from
entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehicle
components, refer to the following tables. The
information contained there is simply recommen-
dations. For questions or for components that
Exterior cleaning
are not listed, consult an authorized Audi dealer
or authorized Audi Service Facility. Also follow
the information found in > A.





Component Situation Solution
Windshield wiper | Deposits Soft cloth with glass cleaner > page 50
blades
Headlights/ Deposits Soft sponge with a mild soap solution®
Tail lights
Sensors/ Deposits Sensors: soft cloth with solvent-free cleaning solution
Camera lenses Camera lenses: soft cloth with alcohol-free cleaning solu-
tion
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special cleaning solution >

343

Emergency assistance

Removing the wheel
>» Use the hexagonal socket in the screwdriver
handle to completely remove the topmost
wheel bolt and set it aside on a clean surface
> fig. 273.
> Screw the threaded end of the alignment pin
from the tool kit hand-tight into the empty bolt
hole > fig. 274.
> Then remove the other wheel bolts as described
above.
> Take off the wheel leaving the alignment pin in
the bolt hole >@).
Putting on the compact spare wheel
> Lift the spare wheel and carefully slide it over
the alignment pin to guide it in place >@.
> Use the hexagonal socket in the screwdriver
handle to screw in and tighten all wheel bolts
slightly.
> Remove the alignment pin and insert and tight-
en the remaining wheel bolt slightly like the
rest.
> Turn the jack handle counter-clockwise to lower
the vehicle until the jack* is fully released.
> Use the wheel bolt wrench to tighten all wheel
bolts firmly > page 353. Tighten them cross-
wise, from one bolt to the (approximately) op-
posite one, to keep the wheel centered.
@) Note
When removing or installing the wheel, the
rim
could hit the brake rotor and damage the
rotor. Work carefully and have a second per-
son help you.
G) Tips
Never use the hexagonal socket in the handle
of the screwdriver to loosen or tighten the
wheel bolts.
— Pull the reversible blade from the screwdriv:
er before you use the hexagonal socket in
the handle to turn the wheel bolts.
— When mounting tires with unidirectional
tread design make sure the tread pattern is
pointed the right way > page 356.
— The wheel bolts should be clean and easy to
turn. Check for dirt and corrosion on the
356
mating surfaces of both the wheel and the
hub. Remove all dirt from these surfaces be-
fore remounting the wheel.
Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in the
right direction.
Using a spare tire with a tread pattern
intended for use in a specific direction
When using a spare tire with a tread pattern in-
tended for use in a specific direction, please note
the following:
— The direction of rotation is marked by an arrow
on the side of the tire.
— If the spare tire has to be installed in the incor-
rect direction, use the spare tire only tempora-
rily since the tire will not be able to achieve its
optimum performance characteristics with re-
gard to aquaplaning, noise and wear.
— We recommend that you pay particular atten-
tion to this fact during wet weather and that
you
adjust your speed to match road condi-
tions.
— Replace the flat tire with a new one and have it
installed on your vehicle as soon as possible to
restore the handling advantages of a unidirec-
tional tire.
Notes on wheel changing
Please read the information > page 326 if you
are going to use a spare tire which is different
from the tires on your vehicle.
After you change a tire:
— Check the tire pressure on the spare immedi-
ately after installation.
— Have the wheel bolt tightening torque
checked with a torque wrench as soon as pos-
sible by your authorized Audi dealer ora
qualified service station.
— With steel and alloy wheel rims, the wheel
bolts are correctly tightened at a torque of
90 ft lbs (120 Nm).