2021 AUDI TT radiator

8S1012721BE
Opening and closing
2. Press both of the outer buttons on the con-
Applies to: vehicles with garage door opener trol unit > page 29, fig. 28 until the yellow
LED (2) turns off and the green LED (4) blinks.
This procedure clears the standard codes that
were set at the factory and does not need to
be repeated again to program the other but-


a gs S
= c 3
tons.
3. Briefly press the button in the control panel
that you want to program.
4. Wait until the yellow LED @) blinks. The pro-
gramming mode is active for five minutes.
5. Go in front of the vehicle with the original re-

Fig. 28 Control panel above the interior rearview mirror mote control transmitter for the system that
| . you are programming to the control panel
Requirement: the button in the control panel batten.
must be programmed > page 29 and the vehi-
cle must be located within range of the system, Programming the button: step 2 at the
such as the garage door. radiator grille
> Press the button to open the garage door. The 6. Hold the remote control transmitter at the
green LED (@) blinks or turns on. vehicle radiator grille > fig. 29.
> Press the button again to close the garage 7. Now press the remote control transmitter
door. until the turn signals on your vehicle blink.
This can take up to 30 seconds.
G) Tips 8. If the emergency flashers blink three times,
the programming was successful. If the
emergency flashers only blink one time, the
five-minute time limit for programming has
expired or the programming was unsuccess-
ful. Repeat the programming procedure
starting from the third step or change the
distance to the radiator grille.
Applies to: vehicles with garage door opener 9. Ifthe garage door or other systems do not
open with the HomeLink buttons even if the
programming was successful, the system
may use a rolling code instead of a fixed
code. You must also then perform rolling
code programming > page 30.
To open or close the garage door, do not press
the button longer than 20 seconds or the ga-
rage door opener will switch to programming
mode.


BFV-0204
The other two buttons in the control panel can be
programmed using the instructions given above.
Start with step 3.


Deleting button programming Fig. 29 Distance between the radiator grille and the re-
mote control transmitter The programmed buttons cannot be deleted indi-
vidually. They must be deleted all at once. Repro-
gram the buttons if necessary.
Programming the button: step 1 on the
control panel
1. Switch the ignition on. mowiteh the ignition on
29

Opening and closing

> Press both of the outer buttons on the control
unit until the yellow LED @) turns off and the
green LED (@) blinks.
Reprogramming buttons
> Switch the ignition on.
> To reprogram an individual button, press the
desired button until the green LED (@) turns off
and the yellow LED (2) starts to blink (after ap-
proximately 20 seconds). Release the button
immediately. The programming mode is active
for five minutes.
> Continue with step 5.
@ Tips
— The distance needed between the remote
control transmitter and the garage door
opener module in the radiator grille
=> fig. 29 depends on the system you are
programming.
— Depending on the system model, you may
need to release the button on the remote
control transmitter while it is programming
and press it again. Hold every position you
try when programming for at least 15 sec-
onds before trying a new position. Keep an
eye on the vehicle turn signals while doing
this.
Rolling code programming
Applies to: vehicles with garage door opener
On some systems, programming a rolling code is
also necessary.
Identifying a rolling code
> Press the button in the control unit that is al-
ready programmed again and hold it down.
>» Watch the green LED () > page 29, fig. 28. If
the green LED blinks quickly, the system (such
as a garage door) has a rolling code.
> Program the rolling code as follows:
Activating the system motor unit
> Locate the programming button on the system
motor unit. The exact location and color of the
button may vary depending on the brand.
> Press the programming button on the system
motor unit (usually this will activate a “display”
30
on the motor unit). You now have approximate-
ly 30 seconds to program the button in the
control panel.
Programming the button in the control
panel
> Press and hold the previously programmed but-
ton in the control panel for two seconds.
> To complete rolling code programming, press
and hold the button again for two seconds.
> On some systems, the button might need to be
pressed a third time to end the programming
procedure.
After programming, the system should recognize
the signal and operate when the button in the
control panel is pressed. Now you may program
the other buttons as needed.
@ Tips
— The rolling code can be programmed more
quickly and more easily with the help of a
second person.
— If any difficulties occur when programming
the rolling code, it may be helpful to read
the system operating manual.

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
IY ett Tel -1
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

Parking aid

Parking aid
Introduction
Applies to: vehicles with rear parking system/parking system
plus
Depending on the vehicle equipment, various
parking aids will help you when parking and ma-
neuvering.
The rear parking system is an audible parking aid
that warns you of obstacles behind the vehicle
=> page 98.
The parking aid plus assists you while parking by
audibly and visually warning you of objects de-
tected in front of and behind the vehicle
=> page 99.
The rearview camera shows the area behind the
vehicle in the Infotainment system display. The
lines in the rearview camera image help you to
park or maneuver > page 700.

ZA WARNING
— Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The systems cannot replace the
driver's attention. The driver is always re-
sponsible when entering or exiting a parking
space and during similar maneuvers.
— Please note that some surfaces, such as
clothing, are not detected by the system.
— Sensors and cameras have blind spots in
which people and objects cannot be detect-
ed. Be especially cautious of small children
and animals.
— The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody. The park-
ing aid may be impaired as a result. Have an
authorized Audi dealer or authorized Audi
Service Facility check their function.
— Make sure the sensors are not obstructed by
stickers, deposits or other materials. If they
are, the sensor function could be impaired.
For additional information on cleaning, see
> page 236.

98
@) Note
— Some objects are not detected or displayed
by the system under certain circumstances:
— objects such as barrier chains, trailer draw
bars, vertical poles or fences
— objects above the sensors such as wall ex-
tensions
— objects with certain surfaces or structures
such as chain link fences or powder snow
— If you continue driving closer to a low ob-
ject, it may disappear from the sensor
range. Note that you will no Longer be
warned about this obstacle.
— Maintain enough distance from the curb to
reduce the risk of damage to the rims.
@) Tips
— The system may provide a warning even
though there are no obstacles in the cover-
age area in some situations, such as:
— certain road surfaces or when there is tall
grass
— external ultrasonic sources such as from
cleaning vehicles
—in heavy rain, snow, or thick vehicle ex-
haust
— Audi recommends practicing parking ina
traffic-free location or parking lot to be-
come familiar with the systems. Practice
parking in good light and weather condi-
tions.
— You can change the volume of the signals.
— What appears in the display is slightly de-
layed.
— The sensors must be kept clean and free of
snow and ice for the parking aid to operate.
Rear parking system
Applies to: vehicles with rear parking system
The rear parking system is an audible aid.
Description
There is a sensor in the rear bumper cover. If
these detect an obstacle, audible signals warn
you.

Checking and Filling

er door manual release
Applies to: vehicles with fuel filler door manual release
Fuel fi

If the fuel filler door lock is faulty, the fuel filler
door can be unlocked manually.
F5FV.0093|

Fig. 165 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. 165 >@).
> Press on the left side of the fuel filler door to
open it > page 197, fig. 167.
@ 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.

200

— Do not apply underbody protectant in the
exhaust system area, because this increases
the risk of fire.
(e-) 1 ad(molae lg
Observe the safety precautions > page 200, Gen-
eral 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.
Malfunction Indicator Lamp (MIL)
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.
Motor compartment
General information
Special care is required if you are working in the
motor compartment
For work in the motor compartment, such as
checking and filling fluids, there is a risk of in-
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area. > /\.
Explanation of warnings (sticker in the motor
compartment):
@
&

Hot motor components!
Rotating parts!

The radiator fan can switch on at any
time!

8S1012721BE
Checking and Filling


High voltage! Switch off the engine be-
fore coming into contact with any igni-
tion system components!

The catalytic converter can be damaged
"271i if the oil level is too high!

Always follow the instructions in the op-
aa erating manual.


ZA\ WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the motor com-
partment.
— Never spill fluids on a hot engine. These flu-
ids (such as the freeze protection contained
in the coolant) can catch fire.
— Avoid short circuits in the electrical system.
— Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.
— Never open the hood when there is steam or
coolant escaping from the motor compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
—The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure. There
is a risk of burns
— To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
— Due to the risk of electric shock, never touch
the ignition cable or other components in
the electronic high-voltage ignition system
when the engine is running or is starting.
— If a gear is engaged while the vehicle is sta-
tionary and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
— If inspections or repairs must be performed
while the engine is running, moving compo-
nents (such as the ribbed belt, generator,
and radiator fan) pose an additional risk.
— Set the parking brake first and select the
“P” (Park) selector lever position.
— Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine
components. Before any work, always re-
move any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.
— Pay attention to the following warnings list-
ed when work on the fuel system or on the
electrical equipment is required.
— Do not smoke.
— Never work near open flames.
— Always have a working fire extinguisher
nearby.
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Limit your exposure to exhaust and chemi-
cals to as short a time as possible.


Z\ WARNING
California Proposition 65 Warning:
— Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu-
ids contained in vehicles and certain prod-
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California

201

Checking and Filling

— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— You can continue driving if the permitted
G12evo coolant additive was not added.
However, go to an authorized Audi dealer or
authorized Audi Service Facility immediately
to have the coolant replaced to reduce the
risk of engine damage.
— 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

©) = z [RAz-0539]

MIN


Fig. 171 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 202.
> Check the coolant level in the coolant expan-
sion tank > page 203, fig. 168 using the outer
markings @) > fig. 177. The coolant level must
be between the markings 2) 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 >@).
208
If you must add coolant, use a mixture of water
and coolant additive. Audi recommends mixing
the coolant additive with distilled water.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cap.
> Remove the cover (1) > fig. 777 carefully to the
left > AX.
» Add the correct mixture ratio of coolant
> page 207 up to the upper marking @)
> fig. 177.
» 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 motor compartment in any vehicle is a
potentially dangerous area. Stop the engine
and allow it to cool before working in the
engine compartment. Always follow the in-
formation found in > page 200, General in-
formation.
— Never open the hood if you can see or hear
steam or coolant escaping from the motor
compartment. This increases the risk of
burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the motor
compartment with caution.
— When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away
from children. There is a risk of poisoning.

Checking and Filling

> Close the hood > page 202.

Z\ WARNING
— Never connect the charging cable directly to
your vehicle battery. Only use the connec-
tions in the engine compartment
=>page 211.
— Ahighly explosive mixture of gases can form
when charging batteries. Only charge the
battery in well-ventilated areas.
— A drained battery can freeze at tempera-
tures around 32 °F (0 °C). Do not charge or
use a frozen or thawed battery. If ice forms,
the battery housing can crack and battery
electrolyte can leak out, which increases the
risk of an explosion and chemical burns.
Contact an authorized Audi dealer or author-
ized Audi Service Facility for more informa-
tion.
— Do not connect or disconnect the charging
cable while charging because this increases
the risk of an explosion.

@) Tips
Read all of the manufacturer's instructions
for the charger before charging the battery.
Windshield washer
system

B4M-0135|

Fig. 174 Motor compartment: washer fluid reservoir cap
Observe the safety precautions > page 200, Gen-
eral information.
The windshield washer reservoir <> contains the
cleaning solution for the windshield and the
headlight washer system*=> page 203, fig. 168.
212
The reservoir capacity can be found in
=> page 264.
To reduce the risk of lime scale deposits on the
spray nozzles, use clean water with low amounts
of calcium. Always add window cleaner to the wa-
ter. When the outside temperatures are cold, an
anti-freezing agent should be added to the water
so that it does not freeze.
Message
3 Please add washer fluid
Fill the washer fluid for the windshield washer
system and the headlight washer system* when
the ignition is switched off.
C) Note
— The concentration of anti-freezing agent
must be adjusted to the vehicle operating
conditions and the climate. A concentration
that is too high can lead to vehicle damage.
— Never add radiator anti-freeze or other addi-
tives to the washer fluid.
— Do not use a glass cleaner that contains
paint solvents, because this could damage
the paint.
Service interval display
The service interval display detects when your ve-
hicle is due for service.
The service interval display works in two stages:
— Inspection or oil change reminder: after a cer-
tain distance driven, a message appears in the
Infotainment system display each time the igni-
tion is switched on or off. The remaining dis-
tance or time is displayed briefly.
— Inspection or oil change due: if your vehicle
has reached an inspection or oil change interval
or both intervals at the same time, the mes-
sage Inspection due! or Oil change due! or Oil
change and inspection due! appears briefly af-
ter switching the ignition on or off.
Checking service intervals
You can check the remaining distance or time un-
til the next oil change or next inspection in the
Infotainment system. Select in the Infotainment >