2020 AUDI TT COUPE overheating

8S1012721BB
Instrument cluster

@) Note
— Auxiliary headlights and other accessories in
front of the air intake impair the cooling ef-
fect of the coolant. This increases the risk of
the engine overheating during high outside
temperatures and heavy engine load.
— The front spoiler also helps to distribute
cooling air correctly while driving. If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the engine over-
heating will increase. See an authorized
Audi dealer or authorized Audi Service Fa-
cility for assistance.
Tachometer
The tachometer @) > page 10, fig. 3 displays the
engine speed in revolutions per minute (RPM).
The beginning of the red zone in the tachometer
indicates the maximum permissible engine speed
for all gears once the engine has been broken in.
Before reaching the red zone, you should shift in-
to the next higher gear, choose the "D" or "S" se-
lector lever position, or remove your foot from
the accelerator pedal.
Engine speed limitation
Applies to: vehicles with center armrest
If the Ba indicator light turns on, the engine will
be automatically limited to the RPM displayed in
the instrument cluster. This will protect the en-
gine components, for example during a cold start
or from overheating.
The engine speed limitation deactivates once the
engine is no longer in the critical temperature
range and you have released the accelerator ped-
al once.
If the engine speed limitation was activated by
an engine control malfunction, the By indicator
light also turns on. Make sure the engine speed
does not go above the speed displayed, for exam-
ple when downshifting. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately to have the malfunction corrected.
CG) Note
The needle in the tachometer may only be in
the red area of the gauge for a short period of
time before there is a risk of damaging the
engine. The location where the red zone be-
gins varies depending on the engine.
Odometer
11:30"

Fig. 4 Instrument cluster: odometer and reset button
The trip odometer and odometer are displayed in
the status line ©) > page 10, fig. 3.
The trip odometer shows the distance driven
since it was last reset. It can be used to measure
short distances. The odometer shows the total
distance that the vehicle has been driven.
Resetting the trip odometer

> Press the reset button 0.0] on the instrument
cluster. The trip odometer will be reset to zero.
Gi) Tips
Distances are displayed in mi (miles) or km
(kilometers).

Outside temperature
display
The outside temperature is displayed in the sta-
tus line ©) > page 10, fig. 3.
If your vehicle is stationary or if you are driving at
very low speeds, the temperature displayed in
the instrument cluster may be slightly higher
than the actual temperature outside due to heat
radiating from the engine.
11

Instrument cluster

At temperatures below 41 °F (+5 °C), a snowflake
symbol appears in front of the temperature dis-
play > A.

ZA WARNING
Do not assume the roads are free of ice based
on the outside temperature display. Be aware
that there may be ice on roads even when the
outside temperature is around 41 °F (+5 °C)
and that ice can increase the risk of accidents.


Fuel level
The display @ > page 10, fig. 3 only works when
the ignition is switched on. When the display has
reached the reserve mark, a red LED turns on and
the iy indicator light turns on > page 197.
For the tank capacity in your vehicle, refer to the
Technical Data > page 263.
@) Note
Never drive until the tank is completely emp-
ty. The irregular supply of fuel that results
from that can cause engine misfires. Uncom-
busted fuel will then enter the exhaust sys-
tem. This can cause overheating and damage
to the catalytic converter.
Multifunction steering
wheel
87.6 MHz
cS BAL
90.0 MHz
90.5 MHz
91.5 MHz
TRON Lard
Fig. 5 Driver information system display
12

Fig. 6 Left side of multifunction steering wheel
Requirement: the ignition must be switched on.
The driver information system contains multiple
tabs @ that display various information (2).
The following tabs may be available, depending
on vehicle equipment:








First tab Vehicle functions
Second tab | Driver messages (this is only dis-
played if at least one indicator
light/message is being displayed)
=>page 16
Third tab Radio > page 165
Media
> page 170
Fourth tab | Telephone > page 129
Fifth tab Navigation > page 149
Map > page 158
Sixth tab Sound®> page 189
Audi connect > page 142
Settings > page 189
@®lk2] button

Switching tabs: press the|<>] button repeatedly
until the desired tab is shown (for example, Ra-
dio).


@ [VIEW] button
Changing the view > page 13.

©®|[] button
Return to functions at higher levels.
© DJand [control buttons
Open/close the selection menu or options menu
=> page 13.

Assist systems

Switching the system on
Applies to: vehicles with cruise control system


@ #
©
f°
Fig. 92 Lever: switching on the cruise control system

Requirement: The ignition must be switched on.
> To switch the system on, pull the lever toward
you to position @).
The (a or 8] indicator light and the corre-
sponding message will appear in the instrument
cluster.

ZA WARNING
If the brakes are malfunctioning (for example,
overheating) while the cruise control system
is switched on, it may shut off automatically.
Preselecting or activating a cruise control
Cy ey-t-te)
Applies to: vehicles with cruise control system

When the vehicle is stationary, you can preselect
the cruise control speed or activate the speed
while driving.
Requirement: the system must be switched on.
> To preselect a cruise control speed when the ve-
hicle is stationary, tap the lever toward @)/G)
=> page 88, fig. 92.
> To activate the cruise control speed, pull the
lever toward position @ while driving, or
> To set the current driving speed as the cruise
control speed, press the button @) on the lever.
The active cruise control speed is indicated with
the ICRUISE| or i=} indicator light in the instrument
cluster.
838
Changing the cruise control speed
Applies to: vehicles with cruise control system
> To increase or decrease the cruise control speed
in small increments, tap the lever up to the
first level toward @)/G) > page 88, fig. 92.
> To increase or decrease the cruise control speed
in larger increments, tap the lever up to the
second level toward ()/C).
> To increase or decrease the cruise control speed
continuously, tap and hold the lever at the first
or second level toward @/G).
Overriding or deactivating the cruise
control speed
Applies to: vehicles with cruise control system

You can override or deactivate the cruise control
system. When you deactivate the system, your
cruise control speed will be stored and you can
resume that speed.
Requirement: the system must be switched on
and activated.
Overriding
> To temporarily override the cruise control
speed, press the accelerator pedal.
> Once you release the accelerator pedal, the sys-
tem will adjust back to the stored cruise control
speed.
If you override the cruise control system for a
long period of time, the cruise control system
will be deactivated. The indicator light is dis-
played and the cruise control speed will be saved.
Deactivating
> To deactivate the cruise control speed, press
the lever toward (2) (not locked into place)
=> page 88, fig. 92.
> Press the brake pedal.

A WARNING
Resting your foot on the accelerator pedal
could override the cruise control. This will pre-
vent braking interventions by the system.

8S1012721BB
Assist systems

Switching the system off
Applies to: vehicles with cruise control system
When you switch the system off completely, the
cruise control speed will be deleted.
Requirement: the system must be switched on.
> To switch the system off, press the lever toward
@ (locked into place) > page 88, fig. 92, or
> Switch the ignition off.
Applies to: vehicles with cruise control system
ICRUISE| / 3) Speed control system: currently un-
available. See owner's manual
If the indicator light turns on and this message
appears, the cruise control system has been deac-
tivated. There is a temporary malfunction, for ex-
ample the brakes are overheating. Switch the
cruise control system on again later.
Audi active lane assist
Applies to: vehicles with Audi active lane assist
Active lane assist detects lane marker lines with-
in the limits of the system using a camera in the
windshield. If you are approaching a detected
lane marker line and it appears likely that you
will leave the lane, the system will warn you with
corrective steering. You can override this steering
at any time. If you pass over a line, the steering
wheel will vibrate lightly. In order for this warn-
ing vibration to occur, it must first be switched
on in the Infotainment system. Active lane assist
is ready for operation when the lane marker line
is detected on at least one side of the vehicle.
The system is designed for driving on express-
ways and highways and so it only activates at
speeds above approximately 40 mph (65 km/h)
(depending on the market).
Applies to vehicles with side assist*: If you acti-
vate a turn signal when active lane assist is ready
and it classifies a lane change as critical because

D_ The corrective steering function is not available in all mar-
kets.
of vehicles traveling alongside you or approach-
ing you, there will be noticeable corrective steer-
ing shortly before you leave the lane. This will at-
tempt to keep your vehicle in the lane.
Applies to vehicles without side assist*: When
the system is ready, it will not warn you if you ac-
tivate the turn signal before crossing the lane
marker line. In this case, it assumes that you are
changing lanes intentionally.

Z\ WARNING
— The system warns the driver that the vehicle
is leaving the lane using corrective steering.
The
driver is always responsible for keeping
the vehicle within the lane.
— The system can assist the driver in keeping
the vehicle in the lane, but it does not drive
by itself. Always keep your hands on the
steering wheel.
— Corrective steering may not occur in certain
situations, such as during heavy braking.
— There may be cases where the camera does
not recognize all lane marker lines. Correc-
tive steering can only take place on the side
of the vehicle where lane marker lines are
detected.
— Other road structures or objects could possi-
bly be identified unintentionally as lane
marker lines. As a result, corrective steering
may be unexpected or may not occur.
— The camera view can be restricted, for exam-
ple by vehicles driving ahead or by rain,
snow, heavy spray light shining into the
camera or by dirt on the window. This can
result in active lane assist not detecting the
lane marker lines or detecting them incor-
rectly.
— In certain situations where visibility is low,
the vehicle may switch internally from “ear-
ly” to “late” steering correction )).
— Under certain conditions such as ruts in the
road, an inclined roadway or crosswinds, the
corrective steering alone may not be enough
to keep the vehicle in the middle of the lane.

89

8S1012721BB
Checking and Filling

Fuel filler door emergency release

If the fuel filler door lock is faulty, the fuel filler
door can be unlocked manually.
rsFV.0033
|

Fig. 166 Luggage compartment: cover in the right side
trim panel
> Open the luggage compartment lid.
> Lift the cargo floor.
> To unlock the fuel filler door, loosen the loop
from the retainer and then pull on the loop
carefully > fig. 166 >@).
> Press on the left side of the fuel filler door to
open it > page 196, fig. 162.
@® Note
Only pull on the loop until you feel resistance.
You will not hear it release. If you continue to
pull, you could damage the emergency re-
lease mechanism.
Emissions control
system
General information
Z\ WARNING
The temperature of the exhaust system is
high, both when driving and after stopping
the engine.
— Never touch the exhaust tail pipes once they
have become hot. This could result in burns.
— Do not park your vehicle over flammable
materials such as grass or leaves because
the high temperature of the emissions sys-
tem could start a fire.




— Do not apply underbody protectant in the
exhaust system area, because this increases
the risk of fire.
(el e-] Nad (mcl akg
Follow the safety precautions > page 199, Gener-
al information.

The vehicle may only be driven with unleaded
gasoline, or the catalytic converter will be de-
stroyed.
Never drive until the tank is completely empty.
The irregular supply of fuel that results from that
can cause engine misfires. Uncombusted fuel
could enter the exhaust system, which could
cause overheating and damage to the catalytic
converter.
On Board Diagnostic System (OBD)
The On Board Diagnostic System monitors the
engine and transmission components that influ-
ence emissions.
7m
8
2 z 6
Fig. 167 Footwell on left side of the vehicle: connection
port for the On Board Diagnostic System (OBD)
On Board Diagnostic System
Engine data can be read out at the On Board Di-
agnostic System connection port using a special
testing device > fig. 167.
Indicator light
If the S indicator light blinks or turns on, there
is a malfunction that is causing poor emissions
quality and that could damage the catalytic con-
verter. Drive slowly to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction corrected.
199

8S1012721BB
Checking and Filling




Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

@) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.
Checking coolant

RAZ-0539


MIN

Fig. 173 Engine compartment - coolant expansion tank
(diagram): @) cover; @) markings
Observe the safety precautions > page 200, Gen-
eral information.
Checking the coolant level
> Park the vehicle on a level surface.
>» Switch the ignition off.
> Open the hood > page 201.
> Check the coolant level in the coolant expan-
sion tank > page 202, fig. 170 using the outer
markings @) > fig. 173. The coolant level must
be between the markings @) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion tank >@.
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cap.
>» Remove the cover () > fig. 173 carefully to the
left > A\.
» Add the correct mixture ratio of coolant
> page 206 up to the upper marking @)
> fig. 173.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Close the cap securely.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

Z\ WARNING
— The engine compartment in any vehicle can
be a dangerous area. Stop the engine and al-
low it to cool before working in the engine
compartment. Always follow the informa-
tion found in > page 200, General informa-
tion.
— Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of >


207