2021 AUDI TT ABS

Intelligent Technology

— If malfunctions occur in other systems or
certain driver assist systems are active, the
ESC must be switched on by the system. The
ESC
may switch on automatically and can-
not be operated with the button.
Brakes
(eee eleurl sel)
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. To
ensure the optimal braking effect, the brake sys-
tem is cleaned at regular intervals. This is done
by applying the brake pads to the brake rotors for
a short period of time when driving at high
speeds when the windshield wipers are switched
on.
If the brake system becomes damp, for example
after driving in heavy rain, the braking effect may
be delayed. Other factors that could temporarily
increase the response time of the brakes include:
— Wet conditions
— Low temperatures, ice, and snow
— Roads covered in salt
— Dirty brake pads
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. In this case,
braking heavily several 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-
106
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.
Ceramic brakes
Applies to: vehicles with ceramic brakes
Ceramic brakes provide excellent deceleration
rates.
The break-in period for new ceramic brakes may
be significantly longer than for standard brake
rotors. Due to the properties of the material,
they may cause noises at lower speeds. Ceramic
brakes also absorb more moisture in wet condi-
tions. Therefore, there will temporarily be less
braking force than when the brakes are dry. You
can compensate for this by pressing the brake
pedal harder.

ZA\ WARNING
— Only apply the brakes for the purpose of
cleaning the brake system when road and
traffic conditions permit. You must not en-
danger other road users and increase the
risk of an accident.
— Due to the risk of injury, only have an au-
thorized Audi dealer or authorized Audi
Service Facility work on the brake system.
Incorrect repairs could impair the function.
— Never let the vehicle roll while the engine is
stopped because this increases the risk of an
accident.
— During automatic braking maneuvers, the
brake pedal may move downward automati-
cally. To reduce the risk of injury, do not
place your foot under the brake pedal.
@) Note
— Never let the brakes “rub” by pressing the
pedal lightly when braking is not actually
necessary. This can cause the brakes to over-
heat and increases braking distance and
causes wear.

8S1012721BE
Intelligent Technology

— Utilize the engine braking effect when driv-
ing downhill by selecting the “S” driving
program > page 82. This reduces the load
on the brakes. If you need to brake addition-
ally, brake in intervals and not continuously.
G) Tips
— If you retrofit your vehicle with a front spoil-
er, wheel covers or similar items, make sure
that the air flow to the brakes is not ob-
structed. Otherwise the brake system can
overheat.
— Also refer to the information about brake
fluid > page 209.
Messages
EG / ©) Brakes: malfunction! Safely stop ve-
hicle
There is a malfunction in the brake system. If
[ES / Gana Blalso turn on, there is a malfunc-
tion in the ABS, ESC, and braking distribution. If
the brake booster is not working, you have to use
much more force when braking the vehicle.
Do not continue driving. See an authorized Audi
dealer or authorized Audi Service Facility for as-
sistance. Read and follow the other safety pre-
cautions > A\.
GG / @ Warning! No brake booster function
If the brake booster is not working, you have to
use much more force when braking the vehicle.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
GG if @ Brake pads: wear limit reached. You
can continue driving. Please contact Service
The brake pads are worn. Drive to an authorized
Audi dealer or authorized Audi Service Facility as
soon as possible to have the malfunction correct-
ed.
Ga / @ Parking brake: malfunction! Safely
stop vehicle. See owner's manual
— If the indicator light and the message appear
when the vehicle is stationary or after switch-
ing the ignition on, check if you can release the
parking brake. If you cannot release the parking
brake, see an authorized Audi dealer or author-
ized Audi Service Facility. If you can release the
parking brake and the message still appears,
see an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
— If the indicator light and message appear while
driving, the hill start assist or emergency brak-
ing function may be malfunctioning. It may not
be possible to set the parking brake or release
it once it has been set. Do not park your vehicle
on hills. See an authorized Audi dealer or au-
thorized Audi Service Facility for assistance.
Other indicator lights
When you switch the ignition on, the IBRAKE| /@
indicator light turns on briefly to check the func-
tion. If the indicator light does not turn on, there
is a system malfunction.
fe / @ stays on, there is a malfunction in
the brake system.

ZA\ WARNING
If a malfunction occurs in the ABS, ESC, and
braking distribution, interventions that stabi-
lize the vehicle will no longer be available.
This could cause the vehicle to swerve, which
increases the risk that the vehicle will slide.
Do not continue driving. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.

Steering
Electromechanical steering supports the driver's
steering movements by electronically adapting
the power steering depending on the vehicle
speed. The settings depend on the selected Audi
drive select* mode.
Messages
a Steering: malfunction! Please stop vehicle
The power steering may have failed. Adapt your
driving style immediately to compensate for the
fact that it may be more difficult to turn the >
107

Fig. 153 Storage compartment in the center console: con-
necting mobile devices
Connect your mobile devices to the Audi music in-
terface in order to operate them through the
MMI and charge the battery.
USB input
> Connecting a mobile device using a USB
adapter: connect the applicable USB adapter (2)
to the port on the Audi music interface @) and
then connect the adapter to the mobile device
@ (such as an iPod).
> Charging a mobile device using a USB adapter:
when you connect a mobile device to the Audi
music interface (@) using the applicable USB
adapter @), the battery will automatically
charge.
> Disconnecting a mobile device from the Audi
music interface: remove the USB adapter @)
from the Audi music interface @).
> Disconnecting mobile devices with a dock con-
nector: remove the dock connector from the
Apple device with the release tabs pressed in @)
=> page 175, fig. 152.
The media are started and operated through the
mobile device or the MMI, depending on the de-
vice being used > page 177.
Connecting multiple mobile devices: if a mobile
device (such as a smartphone) is connected at the
respective USB port on the Audi music interface,
then all devices can be used as a playback source.
AUX Input
> Connecting a mobile device to the AUX input:
connect the cable G) to the AUX input © on the
176
Audi music interface and then to the mobile de-
vice
@) (such as an MP3 player or smartphone).
> Disconnecting a mobile device from the AUX
input: remove the cable (S) from the Audi music
interface.
> Operation: select and confirm the External au-
dio player source ©) > page 177, fig. 154. The
media are started and operated through the
mobile device ().


ZA WARNING
Driving requires your complete and undivided
attention. As the driver, you have complete re-
sponsibility for safety in traffic. Never operate
mobile devices while driving, because this in-
creases the risk of an accident.

@) Note
— Remove the connector from the Audi music
interface carefully so it is not damaged.
— Use a USB extension cable to connect devi-
ces that have an integrated USB connector
(such as a USB stick) to prevent damage to
your USB device and the Audi music inter-
face.
— Extremely high or low temperatures that
can occur inside vehicles can damage mobile
devices and/or impair their performance.
Never leave mobile devices in the vehicle in
extremely high or low temperatures.
@ Tips
— When you switch the ignition off, the USB
ports are still supplied with power until the
energy management intervenes.
— Do not use an additional adapter or USB ex-
tension cable to connect mobile devices to
the Audi music interface that already have a
cable or that must be connected with a USB
adapter > page 175. Using an additional
adapter or US extension cable may impair
functionality.
— You can purchase the AUX connector cable
from an authorized Audi dealer or at spe-
cialty stores.
— Audi recommends setting the volume of a
mobile device connected to the AUX input to >

8S1012721BE
Additional information

Additional information
Brands and licenses
This manual does not contain any symbols, such
as ® or ™, to identify trademarks or registered
trademarks. However, the absence of these sym-
bols does not constitute a waiver of any rights as-
sociated with these names.
Apple, iPhone, iPod, iPod shuffle, Apple CarPlay,
Lightning, and iTunes are trademarks of Apple
Inc.
10S is a trademark or, in the USA and other coun-
tries, a registered trademark of Cisco and is used
under license.
Other product and manufacturer names may be
trademarks of their respective owners.
195

Checking and Filling

Checking and Filling
Fuel
Types of gasoline
The correct gasoline grade is stated on the inside
of the fuel filler door.
The vehicle is equipped with a catalytic converter
and must only be driven with unleaded gasoline.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
The individual gasoline grades are differentiated
by octane ratings. This value is given with (R
+M)/2 equating to AKI or in RON.
The headings below match the sticker in the fuel
filler door (examples):
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular / MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI /
91 RON >©.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 91 / SUPER MIN. RON 95
Using premium gasoline with minimum 91 AKI /
95 RON is recommended.
Applies to: TT and TTS models: If premium gaso-
line is not available, you can also use regular gas-
oline 87 AKI / 91 RON. However this does reduce
the engine power slightly.
Applies to: RS models: To achieve the specified
power and torque, Audi recommends using pre-
mium plus gasoline with at least 93 AKI / 98
RON.
Applies to: RS models: If premium gasoline is not
available, you can also use regular 87 AKI /
91 RON gasoline if absolutely necessary. Howev-
er, you must only drive in the middle of the RPM
range and with low engine load. Refuel your vehi-
cle with premium gasoline as soon as possible.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 93 / SUPER PLUS MIN. RON 98
Using premium plus gasoline with at least 93
AKI / 98 RON is recommended.
196
If no premium plus gasoline is available, you can
also use premium gasoline with 91 AKI / 95 RON.
However this does reduce the engine power
slightly.
C) Note
— Filling the tank just one time with leaded
fuel or other metallic additives will cause
permanent deterioration to the catalytic
converter function.
— When gasoline with an octane rating that is
too low is used, high speeds or heavy engine
load can lead to engine damage.
G) Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine.
Gasoline mixture
Gasoline with alcohol or MTBE (Methyl-Tert-
Butyl-Ether)
You can use unleaded gasoline mixed with alco-
hol or MTBE (generally labeled as oxygenated
compounds) as long as the fuel meets the follow-
ing conditions:
Gasoline with methanol content (methyl alco-
hol or methanol)
— Anti-Knock Index is at least 87 AKI
—No more than 3% methanol
— More than 2% solvent
Gasoline with ethanol content (ethyl alcohol or
ethanol)
— Anti-Knock Index is at least 87 AKI
—No more than 15% ethanol
Gasoline with MTBE content
— Anti-Knock Index is at least 87 AKI
—No more than 15% MTBE
Gasoline adapted to the season
Many gasoline fuels are adapted to the seasons.
When the season changes, refueling at high-traf-
fic gas stations is recommended. It is more likely
that the gasoline will be suitable for the season
there.

Wheels

> Audi recommends using Audi
Genuine Tires. If you would like
to use different tires, please
note that the tires may perform
differently even if they are the
same size > A.
>If you would like to equip your
vehicle with a tire and rim com-
bination that is different from
what was installed at the facto-
ry, consult with an authorized
Audi dealer or authorized Audi
Service Facility before making a
purchase > A.
Because the spare tire® is differ-
ent from the regular tires instal-
led on the vehicle (such as winter
tires or wide tires), only use the
spare tire* temporarily in case of
emergency and drive carefully
while it is in use. It should be re-
placed with a regular tire as soon
as possible.
Applies to: vehicles with all wheel
drive: All four wheels must be
equipped with tires that are the
same brand and have the same
construction and tread pattern so
that the drive system is not dam-
aged by different wheel speeds.
For this reason, in case of emer-
gency, only use a spare tire* that
222
is the same circumference as the
regular tires.

Z\ WARNING
—Only use tire/rim combina-
tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident
could result.
—For technical reasons, it is not
possible to use tires from oth-
er vehicles. In some cases, you
cannot even use tires from the
same vehicle model.
—Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif-
ferent construction can differ
greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged
and this can reduce driving
safety and increase the risk of
an accident.
—Only use tires that are more
than six years old when abso-
lutely necessary and drive

carefully when doing so.

Wheels

If the tire pressure monitoring indicator
appears
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Using the ABS sensors, the tire pressure monitor-
ing system compares the tire tread circumfer-
ence and vibration characteristics of the individu-
al tires. If the pressure changes in one or more
tires, this is indicated in the Infotainment system
display with an indicator light (J and a message.
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored in the Infotain-
ment system again each time the pressures
change (switching between partial and full load
pressure) or after changing or replacing a tire on
your vehicle > page 232. The tire pressure moni-
toring system only monitors the tire pressure you
have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
=> page 224, fig. 178.
Tire tread circumference and vibration character-
istics can change and cause a tire pressure warn-
ing if:
— The tire pressure in one or more tires is too low
— The tire has structural damage
— The tire was replaced or the tire pressure was
changed and it was not stored > page 232
— The spare tire” is installed
Indicator lights
If the @ indicator light turns on, there is a loss
of pressure in at least one tire .> A\ Check the
tires and replace if necessary. Check/correct the
pressures of all four tires and store the pressure
again in the Infotainment system > page 232.
iis Tire pressure: malfunction! See owner's
manual
ft oS appears after switching the ignition on or
while driving and the @ indicator light in the in-
strument cluster blinks for approximately one
minute and then stays on, there is system mal-
232
function. Try to store the correct tire pressures
=> page 232. In some cases, you must drive for
several minutes after storing the pressures until
the indicator light turns off. If the indicator light
does turn off or turns on again after a short peri-
od of time, drive to an authorized Audi dealer or
authorized Audi Service Facility immediately to
have the malfunction corrected.

Z\ WARNING
— If the tire pressure indicator appears in the
display,
reduce your speed immediately and
avoid any hard steering or braking maneu-
vers. Stop as soon as possible and check the
tires and their pressure.
— The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
— Under certain conditions (such as a sporty
driving style, winter conditions, or unpaved
roads), the tire pressure monitoring system
indicator may be delayed.
— Do not use run-flat tires on your vehicle. Us-
ing them when not permitted can lead to ve-
hicle damage or accidents.
(i) Tips
— The tire pressure monitoring system can al-
so stop working when there is an ESC mal-
function.

— Using snow chains may result in a system
malfunction.
— The tire pressure monitoring system in your
Audi was calibrated with “Audi Original
Tires” > page 227. Audi recommends using
these tires.
Storing tire pressures
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
If the tire pressure changes or a tire is replaced,
it must be confirmed in the Infotainment sys-
tem.
> Before storing the tire pressures, make sure the
tire pressures in all four tires meet the speci-
fied values and are adapted to the load
=> page 223.

8S1012721BE
Care and cleaning

Interior cleaning


Component Situation Solution
Window glass Deposits Glass cleaner, then wipe dry
Decorative parts | Deposits Mild soap solution®
and
trim
Plastic parts Deposits Damp cloth

Heavier deposits Mild soap solution ®), detergent-free plastic clean-
ing solution, if necessary


Displays/instru- | Deposits Soft cloth with LCD cleaner; dust in the lower area
ment cluster of the instrument cluster can be removed using a
soft brush.
Controls Deposits Soft brush, then a soft cloth with a mild soap solu-
tion?)
Safety belts Deposits Mild soap solution ®, allow to dry before letting
them retract
Textiles, Deposits adhering to the Vacuum cleaner
artificial leather, | surface
Alcantara Water-based deposits such
as coffee, tea, blood, etc.
Absorbent cloth and mild soap solution®

Oil-based deposits such as
oil, make-up, etc.
Apply a mild soap solution ®), blot away the dis-
solved oil or dye, treat afterward with water, if nec-
essary

Certain types of deposits
such as ink, nail polish, latex
paint, shoe polish, etc.
Special stain remover, blot with absorbent materi-
al, treat afterward with mild soap solution, if neces-
sary?)

Natural leather Fresh stains Cotton cloth with a mild soap solution®

Water-based deposits such
as coffee, tea, blood, etc.
Fresh stains: absorbent cloth
dried stains: stain remover suitable for leather

Oil-based deposits such as
oil, make-up, etc.
Fresh stains: absorbent cloth and stain remover
suitable for leather
dried stains: oil cleaning spray

Certain types of deposits
such as ink, nail polish, latex
paint, shoe polish, etc.
Spot remover suitable for leather


Care Regularly apply conditioning cream that protects
from light and penetrates into the material. Use
special colored conditioning cream, if necessary.
Carbon compo- Deposits Clean the same way as plastic components
nents

a) Mild soap solution: maximum two tablespoons of neutral soap in 1 quart (1 liter) of water
239