warning light AUDI TT COUPE 2020 Owner's Manual

Sitting correctly and safely

@) Tips
Smoke may be released when pyrotechnic belt
tensioners deploy. This is not a sign of a vehi-
cle fire.
Airbag system
(eee ieleuri sel)


ZA\ WARNING
— If you have not fastened your safety belt,
you are in an incorrect seating position, or
you are too close to the airbag system, the
airbag system will not be able to protect
you. This increases the risk of serious or fa-
tal injuries. Make sure that every vehicle
passenger has their safety belt correctly fas-
tened and is sitting in a correct seating posi-
tion > page 45. This is necessary regardless
of whether the seat is equipped with an air-
bag or not.
— Never place your feet on the instrument
panel, out of the window, or on the seat sur-
faces. To help ensure that the airbag system
can deploy correctly, never bend forward or
lean on the door or the side window. Other-
wise, serious and possibly fatal injuries can
occur if the airbags deploy.
— People, animals, or objects between the
passengers and the airbag system can inter-
fere with the correct deployment of the air-
bag or can be thrown through the vehicle in-
terior, increasing the risk of serious or fatal
injuries. Make sure that nothing is located
between the vehicle occupants and the air-
bag system. Do not secure or transport any
objects within the deployment zone of the
airbag systems, especially on the steering
wheel, on the instrument panel, on the
doors, on the windows, or in the footwell.
— Never put stickers on the airbag system cov-
ers or cover them with any objects.
— Applies to: Coupe: Only lightweight clothing
should be hung from the garment hooks in
the vehicle. Do not use clothes hangers to
hang clothing. The pockets of the clothing
must not contain any heavy, breakable, or


sharp-edged objects. This could impair the
effectiveness of the side curtain airbags.
— You must not use seat or protective covers
that are not specifically approved for use on
Audi seats with side airbags. Since the side
airbags deploy from the seat backrest, such
covers could impair the protective function
of the side airbags.
— Damage to the original seat covers in the
side airbag deployment area must always be
repaired by an authorized Audi dealer or au-
thorized Audi Service Facility.
— Airbag system components are installed at
various locations in your vehicle. Incorrect
work or repairs on the vehicle could damage
the airbag system components or impair
their functionality. This may prevent the air-
bags from deploying or cause them to de-
ploy incorrectly in the event of an accident,
which increases the risk of serious or fatal
injuries. Only have an authorized Audi dealer
or authorized Audi Service Facility make re-
pairs or modifications to a vehicle.
— The airbag system can only provide protec-
tion during one collision. If there is another
collision, the airbag system will not deploy
again. If the airbag system has deployed,
have it replaced immediately by an author-
ized Audi dealer or authorized Audi Service
Facility.
— Fine dust may appear if the airbags deploy.
This is completely normal and does not indi-
cate a fire in the vehicle. The fine dust can ir-
ritate the skin and mucous membranes in
the eyes and can cause difficulty breathing,
particularly for individuals who have or have
had asthma or other health issues that af-
fect breathing. Exit the vehicle or open the
windows or doors to get access to fresh air.


52
G) Tips
If you are transporting children in the vehicle,
read the information and follow the safety
precautions > page 58.

8S1012721BB
Sitting correctly and safely

Safety systems monitoring
The Ea indicator light in the instrument cluster
monitors the safety systems such as the airbags
(including the control modules, sensors, and wir-
ing) and the belt tensioners. It turns on when you
switch the ignition on and turns off after several
seconds.
If the Ea indicator light does not turn on when
the ignition is switched on, does not turn off af-
ter several seconds, or turns on or flashes while
driving, there may be a malfunction in one of the
safety systems. Drive to an authorized Audi deal-
er or authorized Audi Service Facility immediately
to have the malfunction corrected.

A WARNING
Have the malfunction in the safety systems in-
spected immediately. Otherwise, there is a
risk that the systems may not activate during
an accident, which increases the risk of seri-
ous or fatal injury.

53

8S1012721BB
Sitting correctly and safely

Always make sure the indicator light corresponds
to the occupancy of the front passenger's seat.
— Adults or individuals with a similar stature sit-
ting in the front passenger seat: The front pas-
senger's airbag must be activated.
PASSENGER AIR BAG ON @ must remain
on.
— Individuals with a smaller stature (for exam-
ple, adolescents or smaller adults) sitting in
the front passenger seat: The front passeng-
er's airbag must be activated.
PASSENGER AIR BAG ON ® must remain
on.
— Child in a child safety seat secured on the
front passenger seat: The front passenger's air-
bag must be deactivated.
PASSENGER AIR BAG OFF &; must remain
on.
— Front passenger seat is not occupied: The front
passenger's airbag must be deactivated.
PASSENGER AIR BAG OFF 3%; must remain
on.


ZA WARNING
— An adult or a person with a small stature
(such as a young person or small adult) seat-
ed on the front passenger's seat will not be
protected by the passenger's airbag in the
event of a collision if the passenger's airbag
is deactivated. This increases the risk of in-
jury and death. Always make sure that
PASSENGER AIR BAG ON @ remains on
while driving. If
PASSENGER AIR BAG ON @ does not
turn on, make sure the front passenger is
sitting correctly in the seat > page 45 and
that there are no objects covering the front
passenger's seat (such as blankets or pil-
lows). If PASSENGER AIR BAG ON @
still does not turn on, the front passenger's
seat must not be used. Drive to an author-
ized Audi dealer or authorized Audi Service
Facility and have the airbag system inspect-
ed.
—Achild ina child safety seat on the front
passenger's seat - especially in a rear-facing
child safety seat - can receive a severe im-


which increases the risk of serious or fatal
injury. Applies to Coupe: Always secure child
safety seats on the rear seats. If special cir-
cumstances require the use of a child safety
seat on the front passenger's seat, always
make sure that
PASSENGER AIR BAG OFF %; remains
on while driving. If
PASSENGER AIR BAG OFF #¥; does not
turn on, remove the child safety seat and in-
stall it again according to the child safety
seat manufacturer instructions. If
PASSENGER AIR BAG OFF &%; still does
not turn on, the front passenger's seat must
not be used. Drive to an authorized Audi
dealer or authorized Audi Service Facility
and have the airbag system inspected.
Fluids, electronic devices, or mechanical
damage on the front passenger's seat may
cause the front passenger seat occupant de-
tection to malfunction. The system may
then incorrectly detect if the front passeng-
er's seat is occupied. As a result, it could de-
ploy the front passenger’s airbag incorrectly
or fail to deploy it, which increases the risk
of serious or fatal injury. Make sure that no
wet objects (such as a wet hand towel) and
no fluids come into contact with the front
passenger's seat cushion. If the front pas-
senger's seat becomes wet, dry it immedi-
ately. Make sure no electronic devices (such
as a laptop or a retrofitted seat heater) are
on the front passenger's seat. Do not trans-
port any objects on or under the front pas-
senger's seat.
Seat covers or protective covers may prevent
the advanced airbag system from correctly
detecting child safety seats or passengers in
the front passenger's seat. You must not use
seat covers or protective covers on the front
passenger's seat that are not specifically ap-
proved for use on Audi seats with an ad-
vanced airbag system.


pact if the front passenger's airbag deploys,

57

Stowing and using

@) Note
Beverage containers in the cup holders should
always
have a lid. Otherwise, the liquid inside
could spill and cause damage to vehicle
equipment.
Add

nal storage compartments
Depending on the vehicle equipment, there may
be a variety of storage areas, compartments, and
retainers at various locations in the vehicle.
— Compartments in the doors
— Storage area in the glove compartment. The
glove compartment can be locked using the
mechanical key > page 20.
— Storage compartment under the center armrest
— Key compartment in the center console
— Storage compartment on the rear side of the
driver’s or front passenger's seat. The compart-
ment can hold a maximum weight of 2.2 lbs (1
kg).
— Coat hooks

ZA\ WARNING
—To reduce the risk of injury, make sure all
storage compartments are always closed
while driving.
— Loose objects can be thrown around the ve-
hicle interior during sudden driving or brak-
ing maneuvers, which increases the risk of
an accident. Store objects securely while
driving.
— Only use the storage compartments in the
door trim panels to store small objects that
will not stick out of the compartment and
impair the function of the side airbags.
— Make sure your view toward the rear is not
blocked, for example by hanging clothing or
objects in the vehicle.
— Applies to: Coupe: No heavy or hard objects
may be placed on the storage compartment
behind the rear seat backrest. There is a risk
of injuring the vehicle passengers when
braking suddenly.
— Applies to: Coupe: Only lightweight clothing
should be hung from the garment hooks in

the vehicle. Do not use clothes hangers to

64

hang clothing. The pockets of the clothing
must not contain any heavy, breakable, or
sharp-edged objects. This could impair the
effectiveness of the side curtain airbags.
@) Note
Applies to: Coupe

Make sure that the heating grid strips for the
rear window defogger are not damaged by
abrasive objects.
Luggage compartment
General information
All pieces of luggage or objects must be securely
fastened in the luggage compartment. Note the
following to maintain good vehicle handling:
> Distribute the load evenly in the luggage com-
partment.
> Stow heavy luggage as far forward in the lug-
gage compartment as possible.
> Use non-elastic cords attached to the tie-downs
to secure objects.

ZA WARNING
— Loose objects can be thrown around the ve-
hicle interior during sudden driving or brak-
ing maneuvers, which increases the risk of
an accident. Always stow objects securely in
the luggage compartment and secure them
at the tie-downs. Use straps suitable for
heavy objects.
— If pieces of luggage or objects are secured
to the tie-downs with unsuitable or dam-
aged straps, this can increase the risk of in-
jury during braking maneuvers or accidents.
— When transporting heavy objects, the vehi-
cle characteristics will change due to the
shift in the center of gravity, which increases
the risk of an accident. You may need to
adapt your driving style and speed to the
current conditions.
— The cargo net is only strong enough to se-
cure light objects. Heavy objects are not ade-
quately secured. Attempting to secure heavy
objects increases the risk of injury.

8S1012721BB
Driving

— Utilize the engine braking effect.
— Avoid driving short distances when possible.
G) Tips
The amount of noise produced by the vehicle
can increase significantly when driving with a
sporty style. Show respect to others around
you and the environment with the way you op-
erate your vehicle, especially at night.
Starting and stopping
the engine
Starting the engine
The [START ENGINE STOP] button switches the
ignition on and starts the engine.



a
Sg
x > ie o

Applies to: TT RS
Fig. 83 Steering wheel: START ENGINE STOP button
Switching the ignition on or off
If you would like to switch the ignition on with-
out starting the engine, follow these steps:

> Press the [START ENGINE STOP] button without
pressing the brake pedal.

Starting the engine
> Automatic transmission: press the brake pedal
and move the selector lever into the P or N po-
sition > A\.
> Press the [START ENGINE STOP] button. The
engine will start.



Equipment that uses a lot of electricity is switch-
ed off temporarily when you start the engine.
If the engine does not start immediately, the
starting procedure stops automatically after a
short time. If this is the case, repeat the starting
procedure after approximately 30 seconds.

ZA WARNING
—To reduce the risk of asphyxiation, never al-
low the engine to run in confined spaces.
— Never turn off the engine before the vehicle
has come to a complete stop.
— The brake booster and power steering only
work when the engine is running. If the en-
gine is off, you have to use more force when
steering or braking. The fact that you cannot
steer and brake as usual may increase the
risk of accidents and serious injuries.
() Note
Avoid high engine speed, full throttle, and
heavy engine load if the engine has not
reached operating temperature yet. You could
damage the engine.


@) For the sake of the environment
Do not let the engine run while parked to
warm up. Begin driving immediately. This re-
duces unnecessary emissions.
(i) Tips
— Some noise after starting the engine is nor-
mal and is no cause for concern.
— If you leave the vehicle with the ignition
switched on, the ignition will switch off af-
ter a certain amount of time. Make sure that
electrical equipment such as the exterior
lights are switched off.
75

Driving

Stopping the engine
> Bring the vehicle to a full stop.
> Press the [START ENGINE STOP] button.


Emergency off function*
If it is absolutely necessary, the engine can also
be turned off while driving at speeds starting at
4 mph (7 km/h). To stop the engine, press the
START ENGINE STOP] button twice in a row or


press and hold it one time.

Z\ WARNING
— Never turn off the engine before the vehicle
has come to a complete stop. Switching it
off before the vehicle has stopped may im-
pair the function of the brake booster and
power steering. You may need to use more
force when braking or steering. Because you
cannot brake and steer as you usually would,
this could lead to accidents and serious inju-
ries.
— If you leave the vehicle, switch the ignition
off and take the vehicle key with you. If you
do not do this, the engine could be started
and electrical equipment such as the power
windows could be activated. This can lead to
serious injuries.
— For safety reasons, always park the vehicle
with the selector lever in the P position.
Otherwise, there is the risk that the vehicle
could roll unintentionally.
@) Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the engine is
switched off and there is a risk of damaging
the engine. For this reason, let the engine run
at idle for approximately two minutes before
shutting it off.
@) Tips
For up to 10 minutes after stopping the en-
gine, the radiator fan may turn on again auto-
matically or it may continue to run, even if the
ignition is switched off.

76
Messages
Pressing the start/stop button again will switch
off the engine
This message appears when you press the
START ENGINE STOP] button while driving.


Engine start system: malfunction! Please con-
tact Service
The engine automatic start system has a mal-
function. Drive immediately to an authorized
Audi dealer or authorized Audi Service Facility to
have the malfunction repaired. To start the en-
gine, press and hold the |START ENGINE STOP
button.


Remote control key: hold back of key
against the designated area. See owner's man-
ual
This message appears if there is no convenience
key inside the vehicle or if the system does not
recognize the key. The convenience key may not
be recognized, for example, if it is covered by an
object that disrupts the signal (such as a brief-
case), or if the key battery is weak. Electronic de-
vices such as cell phones can also interfere with
the signal.
To still be able to start or stop the engine, see
= page 77, Starting the engine when there is a
malfunction.
B Remote control key: key not detected. Is the
key
still in the vehicle?
The B indicator light turns on and this message
appears if the convenience key was removed from
the vehicle when the engine was running. If the
convenience key is no longer in the vehicle, you
cannot switch the ignition on or start the engine
once you stop it. You also cannot lock the vehicle
from the outside.
Please press the brake pedal
This message appears if you do not press the
brake pedal when starting the engine.
Please select N or P

8S1012721BB
Driving

This message appears when starting or stopping
the engine if the selector lever is not in the "N" or
"P" position. The engine will not start/stop.
Starting the engine when there is a
Telia (ela)
It may not be possible to start the engine under
certain circumstances, for example, if the bat-
tery in the vehicle key is drained, if interference is
affecting the key or if there is a system malfunc-
tion.


Fig. 84 Steering column/remote control key: starting the
engine if there is a malfunction
As long as the message ?) Remote control key:
hold back of key against the designated area.
See owner's manual is displayed, you can emer-
gency
start your vehicle.
» Press the brake pedal.
> Press the [START ENGINE STOP] button.


> Hold the master key in the location indicated in
the illustration ?) = fig. 84. The engine will
start.
> If the engine does not automatically start,
press the [START ENGINE STOP] button again.
@ Tips
You can view the message again by pressing
the [START ENGINE STOP] button.




Electromechanical
parking brake
The ©) switch is located under the selector lever
in the center console.
Your vehicle is equipped with an electromechani-
cal parking brake. The parking brake is designed
to prevent the vehicle from rolling unintentional-
ly and replaces the hand brake.
Setting/manually releasing the parking
brake
> Pull the ©) switch to set the parking brake. The
LED in the switch turns on. The iw (USA mod-
els)/[@) (Canada models) indicator light also
turns on in the instrument cluster display.
> To release the parking brake manually, press
the brake or accelerator pedal while the igni-
tion is switched on and press the ©) switch at
the same time. The LED in the button and the
indicator light in the display turn off.
Releasing the parking brake automatically
Requirement: the driver's door must be closed.
> To start driving and release the parking brake
automatically, press the accelerator pedal as
usual.
In addition to releasing the parking brake auto-
matically, other convenience and safety functions
are available when you start driving > page 78,
Starting to drive.
Emergency braking function
You can use the emergency braking function in an
emergency situation, or if the standard brakes
are malfunctioning or the pedal is obstructed.
> Pull and hold the ©) switch.
>» As soon as you release the (©) switch or acceler-
ate, the braking stops.
Pulling and holding the ©) switch while driving
the vehicle activates the emergency braking func-
tion. The hydraulic brake system will brake all
four wheels. The braking effect is similar to heavy
braking > A\.
To reduce the risk of activating the emergency
braking by mistake, a warning tone (buzzer)
sounds when the ©) switch is pulled. Emergency
braking stops as soon as the ©) switch is released
or the accelerator pedal is pressed.
Parking
> Press the brake pedal to stop the vehicle.
> Pull the ©) switch to set the parking brake.
77
>

Driving

P - Park
You can only shift into Park when the vehicle is
stationary > A.
To shift in and out of the P selector lever position,
press the interlock button in the selector lever
while pressing the brake pedal.
R - Reverse
Only shift into reverse gear when the vehicle is
stationary and the engine is running at idle
speed >A.
To select the R selector lever position, press the
interlock button while pressing the brake pedal.
The back-up lights switch on in the R position if
the ignition is switched on.
N - Neutral
The transmission is in idle in this position.
D/S - Normal position for driving forward
In the D/S selector lever position, the transmis-
sion can be operated either in the normal D mode
or in the S sport mode. To select the S sport
mode, pull the selector lever back briefly. Pulling
the lever back again will select the normal D
mode. The selected driving mode is shown in the
Infotainment display.
In the normal mode "D", the transmission auto-
matically selects the correct gear. It depends on
engine load, vehicle speed and driving style.
Select the sport mode "S" for sporty driving. The
vehicle makes full use of the engine's power.
Shifting may become noticeable when accelerat-
ing.
To move from selector lever position "N" to "D",
you must press the brake pedal and the vehicle
must be traveling less than 1 mph (2 km/h) or be
stationary > A.


— Never select "R" or "P" while driving, be-
cause this increases the risk of an accident.
— Power is still transmitted to the wheels
when the engine is running at idle. To pre-
vent the vehicle from “creeping”, you must
keep your foot on the brake in all selector
lever positions (except “P”) when the engine
is running. Otherwise, this increases the risk
of
an accident.
— Do not inadvertently press the accelerator
pedal when the vehicle is stopped if a gear is
engaged. Otherwise the vehicle will start to
move immediately, even if the parking brake
is set. This could result in a crash.
— Do not press the accelerator pedal when
changing the selector lever position while
the vehicle is stationary and the engine is
running.
— Never leave your vehicle with the engine
running while in gear. If you must leave your
vehicle when the engine is running, set the
parking brake and move the selector lever to
the "P" position.
— To decrease the risk of an accident, the se-
lector lever must be in the P position and
the parking brake must be set before open-
ing the hood and working ona running en-
gine. Always read and follow the applicable
warnings > page 200, General information.


Z\ WARNING
Read and follow all WARNINGS.
— Before starting to drive, check if the desired
selector lever position is displayed next to
the selector lever.
— The vehicle can roll even if the ignition is
switched off.

80
@) Note
Never let the vehicle roll downhill with engine
off and the selector lever in the "N" position,
because this could damage the automatic
transmission and catalytic converter.
G) Tips
— Drive select: sporty shifting characteristics
can be selected using the Dynamic driving
mode. The Infotainment display shows S as
the selector lever position instead of D.
—
If you accidentally select "N" while driving,
take your foot off the accelerator pedal im-
mediately and wait for the engine to slow
down to idle before selecting "D" or "S".
—If there is a power failure, the selector lever
will not move out of the "P" position. The >

Driving

Starting the engine
> The selector lever must be in the P or the N po-
sition.
At low temperatures (below 14 °F (-10 °C)), the
engine can only be started when the selector lev-
er is in the P position.
Starting from a stop
> Press and hold the brake pedal.
> Start the engine > page 75.
> Press and hold the interlock button in the selec-
tor lever handle, select the desired selector lev-
er position such as "D" > page 79 and release
the lock button.
> Wait a moment until the transmission shifts.
You will notice a slight movement when the
gear engages.
> Release the brake pedal and press the accelera-
tor pedal > A\.
Various convenience functions are available for
starting on hills > page 78.
Stopping temporarily
> Press the brake pedal to stop the vehicle, for
example at a traffic light. Do not press the ac-
celerator pedal when doing this.
> To prevent the vehicle from rolling when you
start driving, set the parking brake when stop-
ping on steep hills > A\ and >@).
> The parking brake will release automatically
and the vehicle will start moving once you press
the accelerator pedal.
Stopping/parking
If the selector lever is not in the "P" position
when you open the driver’s door, the vehicle
could roll.
In vehicles with a convenience key*, the following
message appears: Shift to P, otherwise vehicle
can roll away. Doors do not lock if gearshift is
not in P A warning tone will also sound.
> Press and hold the brake pedal > /\.
> Set the parking brake.
> Select the "P" selector lever position.
Under certain circumstances, such as driving in
the mountains, it may be useful to switch tempo-
82
rarily to tiptronic mode in order to manually ad-
just the gears to the driving conditions
=> page 83.
On
hills, activate the parking brake first and then
shift into the "P" selector lever position. This pre-
vents too much stress from being placed on the
locking mechanism.

ZA WARNING
— The vehicle can roll even when the engine is
switched off.
— Unintended vehicle movement can lead to
serious injuries.
— Never leave your vehicle with the engine
running while in gear. If you must leave your
vehicle when the engine is running, set the
parking brake and move the selector lever to
the P position.
— Power is still transferred to the wheels when
the engine is running at idle. To prevent the
vehicle from “creeping”, you must keep your
foot on the brake when the engine is run-
ning and the selector lever is in the "D", "S"
or "R" position or “tiptronic” mode is select-
ed.
— Do not inadvertently press the accelerator
pedal when the vehicle is stationary. Other-
wise the vehicle will start to move immedi-
ately, even if the parking brake is set. This
could result in a crash.
— Do not press the accelerator pedal when
changing the selector lever position while
the vehicle is stationary and the engine is
running.
— Never engage the R or P selector level posi-
tions while driving. It could cause a crash.
— Before driving down a steep slope, reduce
your speed and shift into a lower gear with
“tiptronic”.
— Do not ride the brakes or press the brake
pedal
too often or too long when driving
downhill. Constant braking causes the
brakes to overheat and can substantially re-
duce braking performance, increase braking
distance, or cause complete failure of the

brake system.

8S1012721BB
Driving


— If the engine must run while you are work-
ing in the engine compartment with the
hood open, make sure a gear is not engaged.
The selector lever must be firmly in the
P position and locked in place and the park-
ing brake must be set > page 200. Other-
wise, the vehicle could begin moving when
increasing the engine speed, even with the


parking brake set.

() Note
— If you have to stop on an incline, always
press the brake pedal to hold the vehicle in
place to reduce the risk of the vehicle rolling
backward. Do not try to hold the vehicle in
place by pressing and holding the accelera-
tor pedal. The transmission can overheat,
which increases the risk of damage.
— Allowing the vehicle to roll when the engine
is stopped and the selector lever is in the N
position will damage the automatic trans-
mission because it is not lubricated under
those circumstances.
— The transmission can overheat and be dam-
aged under certain driving and traffic condi-
tions such as frequent starts, creeping for a
long time, or stop-and-go traffic. When the
i or ij indicator light turns on, stop the
vehicle at the next opportunity and let the
transmission cool > page 85.
— Allowing the vehicle to roll when the engine
is stopped will damage the S tronic trans-
mission because it is not lubricated
=> page 249, Towing.
@® Tips
For safety reasons, the parking brake is re-
leased automatically only when the driver's
safety belt is fastened.
Hill descent control
The hill descent control system assists the driver
when driving down hills.
Hill descent control is activated when the selec-
tor lever is in the "D" or "S" position and you
press the brake pedal. The transmission automat-

ically selects a gear that is suitable for the hill.
Hill descent control tries to maintain the speed
that was selected at the time of braking, within
physical and technical limitations. If may still be
necessary to adjust the speed with the brakes.
Because hill descent control cannot shift down
farther than 3rd gear, it may be necessary to shift
into tiptronic mode in very steep areas. In this
case, shift manually into 1st or 2nd gear in tip-
tronic mode to use the engine's braking force to
relieve the brakes.
Hill descent control switches off once the hill lev-
els
out or if you press the accelerator pedal.
On vehicles with a cruise control system*
= page 87, hill descent control is also activated
when the speed is set.

ZX WARNING
Hill descent control may not be able to main-
tain a constant speed under all conditions. Al-
ways be ready to apply the brakes.



Shifting manually (tiptronic mode)
The tiptronic mode allows the driver to shift the
gears manually.
| 8Fv-0114]
Fig. 88 Center console: shifting manually with the selector
lever


Fig. 89 Steering wheel: shift paddles*
83