2021 AUDI TT fuel

8S1012721BE
Wheels

vehicle. Consult this manual to
determine how this reduces
the available cargo and lug-
gage load capacity of your vehi-
cle.
> Check the tire sidewall
(= page 215, fig. 175) to deter-
mine the designated load rating
for a specific tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts must be clean and loosen/tighten
easily.
Rims
Rims with a bolted rim ring* or with bolted wheel
covers* consist of multiple pieces. These compo-
nents were bolted together using special bolts
and a special procedure. You must not repair or
disassemble them > A\.

ZA\ WARNING
Wheel bolts that are tightened or repaired in-
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct tightening specifi-
cation, see > page 248, Finishing.
— Always keep the wheel bolts and the threads
in the wheel hub clean and free of grease.
— Only use wheel bolts that fit the rim.
— Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility. Never repair or disassemble
rims yourself, because this increases the risk
of an accident.
Winter tires significantly improve the vehicle's
handling when driving in winter conditions. Be-
cause of their construction (width, compound,

tread pattern), summer tires provide less traction
on ice and snow.
> Use winter tires on all four wheels.
> Only use winter tires that are approved for your
vehicle.
> Please note that the maximum permitted
speed may be lower with winter tires > /A\ in
General information on page 214. An author-
ized Audi dealer or authorized Audi Service Fa-
cility can inform you about the maximum per-
mitted speed for your tires.
> Check the tire pressure after installing wheels
=> page 224.
The effectiveness of winter tires is reduced great-
ly when the tread is worn down to a depth of
0.16 in (4 mm). The characteristics of winter
tires also decrease greatly as the tire ages, re-
gardless of the remaining tread.
@ For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear, and fuel
consumption.
@® Tips
You can also use all season tires instead of
winter tires. Please note that in some coun-
tries where winter tires are required, only
winter tires with the 44 symbol may be per-
mitted.
Snow chains improve both driving and braking in
winter road conditions.
> Only install snow chains on the front wheels.
> Check and correct the seating of the snow
chains after driving a few feet, if necessary. Fol-
low the instructions from the manufacturer.
> Note the maximum speed of 30 mph
(50 km/h). Observe the local regulations.
Use of snow chains is only permitted with certain
rim/tire combinations due to technical reasons.
Check with an authorized Audi dealer or
229

8S1012721BE
Wheels

generation of heat and its ability to dissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate-
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire failure > A.
The grade C corresponds to a level of perform-
ance which all passenger car tires must meet un-
der the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel than
the minimum required by law.

ZA\ WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning or peak traction charac-
teristics.

ZA\ WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.

Z\ WARNING
Temperature grades apply to tires that are
properly inflated and not over or underinflat-
ed.

Tire pressure monitoring
system
(1) General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat-
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire
inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la-
bel, you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a low tire pressure tell-
tale when one or more of your tires is significant-
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re-
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys-
tem is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal-
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
231

8S1012721BE
Wheels

> Switch the ignition on.
> Select in the Infotainment system: the [MENU
button > Vehicle > left control button > Service
& checks > Tire pressure monitoring.
G) Tips
Do not store the tire pressures if snow chains
are installed.


Tire pressure monitoring
system
(1) General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat-
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire
inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la-
bel, you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a Low tire pressure tell-
tale when one or more of your tires is significant-
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re-
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys-
tem is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal-
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low
tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
Applies to: vehicles with tire pressure monitoring system
The tire pressure monitoring system monitors
the pressure in the four tires when driving.
The system uses sensors that measure the tem-
perature and pressure in the tires. The data is
sent from these sensors to the control module by
radio frequency.
The tire pressure monitoring system shows the
current pressures and temperatures of the tires
in the Infotainment system while driving
=> page 234. It also compares the current tire
pressures with the stored tire pressures and
gives a warning if the tire pressure is different
from what is stored > page 234.
The system does not detect if the stored tire
pressures match the recommended tire pres-
sures. You must store the tire pressures again in
each of the following situations > page 235:
— Each time the tire pressures change, for exam-
ple when the load in the vehicle changes
— After replacing a tire
— If wheels with new wheel sensors are used

ZX WARNING
—The tire pressure monitoring system assists
the driver in monitoring tire pressures. The [>

233

Care and cleaning





Component Situation Solution
Exhaust tail pipes | Road salt Water, cleaning solution suitable for stainless steel, if nec-
essary
Rear spoiler Deposits Clean similar to painted parts > page 236; remove dust in
the rear spoiler compartment
Snow/ice Hand brush/solvent-free de-icing spray
Power top Deposits Clean water, power top cleaning product, if necessary.
Clean with the grain of the fabric using a soft brush and al-
low to air dry.
Wind deflector Deposits Water, mild soap solution, if necessary)
Decorative parts | Deposits Mild soap solution ®), a cleaning solution suitable for stain-
and
trim
less steel, if necessary

Paint Paint damage Repair with touch-up paint

Spilled fuel Rinse with water immediately

Surface rust Rust remover, then treat with hard wax; for questions, con-
sult an authorized Audi dealer or authorized Audi Service
Facility.

Corrosion Have it removed by an authorized Audi dealer or authorized
Audi Service Facility.

Water no longer
beads on the surface
of clean paint
Treat with hard wax (at least twice per year)

No shine even though
paint has been pro-
tected/paint looks
poor
Treat with suitable polish; then apply paint protectant if
the polish that was used does not contain any protectant

Deposits such as in-
sects, bird droppings,
tree sap, and road
salt
Dampen with water immediately and remove with a micro-
fiber cloth

Grease-based con-
taminants such as
cosmetics or sun-
block
Remove immediately with a mild soap solution ® and a soft
cloth


Carbon compo- Deposits clean the same way as painted parts > page 236
nents
Decorative decals | Deposits Soft sponge with a mild soap solution®

2) Mild soap solution: maximum two tablespoons of neutral soap in 1 quart (1 liter) of water
238

Fuses and bulbs

Fuse assign

No. Equipment

18 Rearview camera

19
Convenience access and start authoriza-
tion control module

20
Driver’s and front passenger’s lumbar sup-
port


Fig. 198 Vehicle interior: fuse assignment
22
Front passenger's side neck heating (Road-
ster)

24
Right vehicle electrical system control
module

25 Driver’s side power window

26 Seat heating

27 Vehicle electrical system control module

28 Audi music interface, USB connection

29 Luggage compartment lighting

32 Driver assistance systems

33
Airbag, front passenger’s seat electronics,
roof electronics control module


Hold assist button, interior sound, tail




















34 | light switch, climate control system pres-
No. | Equipment sure sensor, neck heating, sockets
1 | Engine components, exhaust treatment Diagnostics, headlamp range control, air
4
|Infotainment control panel, sound system 35 | quality sensor, rearview mirror, cockpit
5 | Diagnostic connection switch module
6 |Automatic transmission selector lever 36 | Right headlight
Climate control systems control panel, 37 [Left headlight
7 |rear window heating, tire pressure moni- 38 Engine control module, Electronic Stabili-
toring zation Control (ESC)
Parking brake switch, light switch, rain/ 39 | Front passenger's side power window
light sensor, roof electronics control mod- AO | Cigarette lighter, sockets
8 |ule, diagnostic interface, emergency call 41 | Fuel leak diagnosis
and communication control module, con- 7 -
SUPADRIOR HIORIEOFIA 42 Vehicle electrical system control module,
P 9 central locking
9 |Steeri l lectroni
Sg CeIn ess 44 |All wheel drive control module
10 | Vehicle positionin : ;
P - g - 45 | Driver's side seat adjustment
11 aes oe 46 | Driver's side neck heating (Roadster)
49 | Engine start, clutch sensor
12 |Sound system, Infotainment system g
14 | Cimareconttol system Blower 52 | Control module for suspension control
53 | Rear window defogger
15 | Electronic steering column lock window 99°
16 | Exterior antenna, Infotainment system The power seats* are protected via circuit break-
Instrument cluster, emergency call and ers that automatically switch on after a few sec-
17 | -ommunication control module onds after the overload has been reduced.

254

8S1012721BE
Fuses and bulbs

Fig. 199 Left side of engine compartment: fuse assign-
ment.

No.


23 Engine start

341 Engine components, fuel injectors

35 Climate control system

36 Left headlight





3 | Drive system control module

Engine components, engine cooling, oil
temperature/oil level sensor

5 | Exhaust temperature sensor

Brake light switch

haust treatment
Engine cooling, oil pressure regulation, ex-

8 | Heated oxygen sensors

9 |Engine components, exhaust door

10 | Fuel pump

13 |Transmission fluid pump

15 |Horn

16 | Engine components

17 |Suppressor

18
garage door opener control module
Diagnostic interface, battery monitoring,

19 | Windshield wipers

20 | Anti-theft alarm system

21 | Automatic transmission control module


22 | Drive system control module, diagnosis

38

Right headlight

Bulbs
Your vehicle is equipped with maintenance-free
headlights and tail lights. However, if a light bulb
needs to be replaced, please contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty.
255

Accessories and technical changes

Accessories and
technical changes
Warranty
Your vehicle is covered by various warranties:
— New Vehicle Limited Warranty
— Limited Warranty Against Corrosion Perforation
— Emissions Control System Warranties: Federal
Emissions Control System Defect Warranty,
Federal Emissions Performance Warranty
— Applies to: USA models: Kansas Safety Belt
Limited Warranty
— Applies to: USA models: California Emissions
Control Warranties: Short-term Emissions De-
fects Warranty, Long-term Emissions Defects
Warranty, TZEV models Emissions Defects
Warranty, California Emissions Performance
Warranty
You can find detailed information in your Warran-
ty & Maintenance Booklet and in the California
Emissions Booklet*.
Audi Literature Shop
Service information is made available as soon as
possible after a model is introduced and can be
ordered in the Audi Literature Shop: http://
literature.audiusa.com
Driving in other
countries
Government regulations in the United States and
Canada require motor vehicles to comply with
emissions regulations and safety standards.
Therefore, vehicles that were produced for the
U.S. and Canadian markets are different from
vehicles produced for other countries.
If you plan to use your vehicle outside of the Unit-
ed States or Canada, it is possible that:
— Fuel may have a significantly lower octane rat-
ing. Unsuitable fuels can cause engine damage.
— Proper maintenance and repair work may not
be possible because special service equipment,
tools, or measuring devices needed for your ve-
hicle may not be available.
258
— Replacement parts may not always be availa-
ble.
— Navigation systems for vehicles built for the
U.S.A. and Canada will not necessarily work in
Europe, and may not work in other countries.
() Note
Audi is not liable for damage to the vehicle re-
sulting from these country-specific differen-
ces.
Maintenance, repairs,
and technical modifi-
cations
Observe the safety precautions > page 200, Gen-
eral information and > page 246, Raising the ve-
hicle.
General information
Due to the increasing complexity of technology in
these vehicles, as well as the safety and environ-
mental standards that apply, you can only per-
form a very limited amount of repairs and modifi-
cations to the vehicle yourself.
Proof of maintenance work may be required to
submit a claim within the warranty period.
We recommend that you have your vehicle serv-
iced by an authorized Audi dealer or authorized
Audi Service Facility and that Audi Genuine Parts
and Audi Genuine Accessories are used. This
helps to ensure that your vehicle's functionality,
performance, and safety are not impaired.
Maintenance and repairs
Your vehicle was designed to help keep mainte-
nance requirements to a minimum. Some regular
maintenance is required to help ensure that your
vehicle runs in a safe, economical, and reliable
manner. Please refer to your Warranty & Mainte-
nance Booklet for more detailed information
about vehicle maintenance.
When operating the vehicle under more extreme
operating conditions, for example when outside
temperatures are very low or in very dusty envi-
ronments, certain maintenance should be per-
formed between the specified intervals.

8S1012721BE
Accessories and technical changes

Usually maintenance and repair work requires
special tools, measuring devices, and other
equipment that is available to trained vehicle
technicians in order to help ensure that your vehi-
cle and all of its systems operate correctly, relia-
bly, and safely. Performing work on the vehicle
incorrectly can impair the operation and reliabili-
ty of your vehicle and may void one or more of
your vehicle's warranties.
Technical Modifications
Interference with electronic components, their
software, the wiring, and data transfer may cause
malfunctions. Because of the way electronic com-
ponents are interconnected, such malfunctions
can also impair systems that are not directly in-
volved. This means that you risk both a substan-
tial reduction in the operational safety of your ve-
hicle and increased wear of vehicle components.
Some convenience functions, such as the conven-
ience turn signal function, individual door open-
ing function, and displays, can be reprogrammed
using special workshop equipment. If functions
are reprogrammed, the information and descrip-
tions about these functions in this Owner's Man-
ual may no longer apply to the changed func-
tions. Audi recommends that an authorized Audi
dealer or authorized Audi Service Facility perform
and verify any reprogramming procedures.


— Never perform any work in the motor com-
partment unless you know exactly how to
carry out the job and have the correct tech-
nical information and the correct tools.
— If you are uncertain about what to do, have
the work performed by an authorized Audi
dealer, an authorized Audi Service Facility,
or another qualified workshop. Serious per-
sonal injury may result from improperly per-
formed work.


Z\ WARNING
Maintenance work, repairs, or technical modi-
fications to the vehicle (such as installing ad-
ditional equipment) that is not performed
correctly can cause serious injuries and in-
crease the risk of an accident.


ZA\ WARNING
The motor compartment in any motor vehicle
is a potentially dangerous area and can cause
serious personal injury.
— Always use extreme caution when doing any
work in the motor compartment. Always fol-
low commonly accepted safety practices and
use common sense. Never risk personal in-
jury.

@) Note
— Maintenance work, repairs, or technical
modifications to the vehicle (such as instal-
ling additional equipment) that is not per-
formed correctly can cause vehicle damage.
— If emergency repairs must be performed,
take your vehicle to an authorized Audi deal-
er or authorized Audi Service Facility as soon
as possible.
— Audi is not liable for damage to the vehicle
resulting from failure to comply with these
guidelines.
@) For the sake of the environment
— Regular maintenance can help protect the
environment.
— Technical modifications to the vehicle can
have a negative impact on fuel consumption
and vehicle emissions.
@) For the sake of the environment
Certain components in your vehicle such as
undeployed airbag modules, pretensioners
and remote control batteries may contain Per-
chlorate Material - special handling may ap-
ply, See www.dtsc.ca.gov/hazardouswaste/
perchlorate. When the vehicle or parts of the
restraint system including airbag modules
and safety belts with pretensioners are scrap-
ped, all applicable laws and regulations must
be observed. Your authorized Audi dealer is
familiar with these requirements and we rec-
ommend that you have your dealer perform
this service for you.
259