2021 AUDI TT service indicator

8S1012721BE
Sitting correctly and safely


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.
@ Tips
If you are transporting children in the vehicle,
read the information and follow the safety
precautions > page 57.
Safety systems monitoring
The ka indicator light in the instrument cluster
monitors the safety systems such as the airbags
(including the control modules, sensor, and wir-
ing) and the belt tensioners. It turns on when you
switch the ignition on and turns off after several
seconds.

If the indicator light does not turn on when the
ignition is switched on, does not turn off after
several seconds, or turns on or flashes while driv-
ing, 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.

ZA\ 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

8S1012721BE
Sitting correctly and safely

The locations of the airbags are labeled with
“AIRBAG”. The following airbags are installed in
your vehicle:
Driver's airbag
Front passenger's airbag
Side airbags
Applies
to: Coupe: Head curtain airbag with
ejection mitigation
©
©0080
Knee airbags
Airbags offer the best possible protection in your
vehicle during an accident when they are used to-
gether with safety belts that are fastened cor-
rectly, and when passengers are sitting in the
correct seating position. Airbags are a supple-
mentary restraint system and do not replace
safety belts.
Applies to: Coupe: Airbags may deploy during
head-on, side-impact, or rollover collisions.
Applies to: Roadster: Airbags may deploy during
head-on or side-impact collisions.
The deployment area for the airbag system can-
not be defined for every situation, since the cir-
cumstances surrounding accidents can vary wide-
ly. Factors that play an important role include the
condition of the object that the vehicle hits (hard
or soft), the angle of impact, vehicle speed, etc.
The deciding factor for the deployment of the air-
bag system is the deceleration that occurs during
an accident. Sensors in the vehicle are designed
to detect the severity of an accident in conjunc-
tion with the control module, and to provide a
targeted and timely deployment of the restraint
system. If the vehicle deceleration that is meas-
ured during an accident is below the specified
reference values in the control module, then the
airbags will not deploy, even though the vehicle
may be severely damaged from the accident. In
these cases, the vehicle occupants will be pro-
tected by the safety belts if they are fastened and
worn correctly.
The deployment of the front passenger's airbag
will depend on the occupancy of the seat
=> page 55.
Each deployed airbag is filled with gas. When this
occurs, the airbag covers open and the airbags

unfold with great force into the deployment zone
within milliseconds. Inflated airbags reduce the
movement of passengers wearing safety belts in
the direction of the impact and thus help to re-
duce the risk of injury. They can help to protect
the head, upper body, and lap, for example. How-
ever, there is the possibility that airbag deploy-
ment can cause injuries.
The airbag system only works when the ignition
is turned on.
If you or other vehicle passengers have physical
limitations that prevent sitting in a correct posi-
tion, modifications to the vehicle may be neces-
sary. For more information, contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty, or call Audi customer support at
1-800-822-2834.
) Tips
Applies to: Coupe
The side curtain airbags in your vehicle have
ejection mitigation functions. This reduces
the risk of being ejected from the vehicle inte-
rior during an accident, especially in the event
of a vehicle rollover.
Advanced airbag system

Fig. 62 Headliner: indicator light to display the status of
the front passenger's airbag
The Advanced Airbag System in your vehicle has
been certified to comply with the requirements
of the United States Federal Motor Vehicle Safety
Standard (FMVSS) 208, as well as Canada Motor
Vehicle Safety Standard (CMVSS) 208 as applica-
ble at the time your vehicle was manufactured.
According to these requirements, the front Ad-
vanced Airbag System on the passenger’s side
55
>

8S1012721BE
Sitting correctly and safely

Always make sure the indicator light corresponds
to the occupancy of the front passenger's seat.
— An adult or individual of similar size in the
front passenger's seat: the front passenger's
airbag must be activated, therefore
PASSENGER AIR BAG ON @ must remain
turned on.
— An individual of smaller size (for example, an
adolescent or small adult) in the front pas-
senger's seat: the front passenger's airbag
must be activated, so
PASSENGER AIR BAG ON ® must stay on.
— Child in a child safety seat on the front pas-
senger's seat: the front passenger's airbag
must be deactivated, so
PASSENGER AIR BAG OFF #; must stay on.
— Front passenger's seat not occupied: the front
passenger's airbag must be deactivated, so
PASSENGER AIR BAG OFF $; must stay on.

Z\ 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 is nothing covering the front pas-
senger's seat (such as blankets or pillows). If
PASSENGER AIR BAG ON @ 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.
—Achild ina child safety seat on the front
passenger's seat - especially in a rear-facing
child safety seat - can receive a severe im-
pact if the front passenger's airbag deploys,
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 &%; stays 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.

Child safety seats
General information
When installing and using child safety seats, fol-
low the information in this Owner's Manual, the
applicable state and federal regulations, and the
manufacturer instructions for the child safety
seat.
57

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

8S1012721BE

Driving


Manually switching the Start/Stop system
off ando
Applies to: vehicles with Start/Stop system
If you do not wish to use the system, you can
switch it off manually.
B8V-0645

Fig. 86 Center console: Start/Stop system button
> To switch the Start/Stop system off/on manual-
ly, press the (@)o button. The LED in the button
turns on when the system is switched off.
G) Tips
If you switch the system off during a Stop
phase, the engine will start again automati-
cally.
Meee emo
Applies to: vehicles with Start/Stop system
Start/stop system: deactivated. Please start en-
gine manually
This message appears when specific conditions
are not met during a Stop phase. The Start/Stop
system will not be able to restart the engine. The
engine must be started manually.
Start/stop system: malfunction! Function un-
available
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to
have the malfunction corrected.
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 and releasing the parking brake
manually
> Pull the ©) switch to set the parking brake. The
LED in the switch turns on. The iin (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 80,
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.
79

8S1012721BE
Driving


driving and the vehicle's acceleration. The
driving wheels could spin and the vehicle
could swerve, especially on slick or slippery
road surfaces, which increases the risk of an
accident.

@) Note
When accelerating using Launch Control, all
vehicle components are subject to heavy
loads. This can result in increased wear.
G) Tips
After accelerating using the Launch Control,
the temperature of some vehicle components
may increase greatly. If that happens, the
function will not be available for a few mi-
nutes to reduce the risk of damage. After a
cool-down period, Launch Control will be
available again.
Peeler ias tea)
os] Transmission: malfunction! Safely stop vehi-
cle
Do not continue driving. Stop the vehicle as soon
as possible in a safe location and secure it so it
does not roll. See an authorized Audi dealer or
authorized Audi Service Facility for assistance.
[i Transmission: too hot. Please stop vehicle
The transmission is too hot and can become dam-
aged. Stop and let the transmission cool with the
engine running (at idle) in the "P" selector lever
position. Then the indicator light and the mes-
sage turn off, drive to an authorized Audi dealer
or authorized Audi Service Facility immediately to
have the malfunction corrected. If the indicator
light and the driver message do not turn off, do
not continue driving. See an authorized Audi
dealer or authorized Audi Service Facility for as-
sistance.
[GJ Transmission: malfunction! You can contin-
ue driving. See owner's manual
Drive immediately to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction repaired.
fs] Transmission: malfunction! You can contin-
ue driving with limited function. No reverse
gear
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. This mode only shifts into certain gears or
may no longer shift at all. The engine may stall.
You cannot engage the reverse gear. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
1} Transmission: malfunction! You can contin-
ue driving in D until engine is off
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. If you turn the engine off, you will not be
able to select any other selector lever positions
after starting the engine again. Drive to an au-
thorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
isl Transmission: too hot. Please adapt driving
style
The transmission temperature has increased sig-
nificantly. Drive very cautiously or take a break
from driving until the temperature returns to the
normal range and the indicator light turns off.
Transmission: please press brake pedal and
select gear again
Press the brake pedal and select the desired se-
lector lever position again. You can then continue
driving.
87

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

Intelligent Technology

steering wheel, and stop your vehicle in a safe lo-
cation as soon as possible. Do not continue driv-
ing. See an authorized Audi dealer or authorized
Audi Service Facility for assistance.
& Steering: malfunction! You can continue
driving
There is a malfunction in the steering system.
Steering may be more difficult or more sensitive.
Adapt your driving style. Have the steering sys-
tem checked immediately by an authorized Audi
dealer or authorized Audi Service Facility. Please
note that the red indicator light may turn on af-
ter restarting the engine. Do not continue driving
if it does.
@ Tips
If the a or El indicator light only stays on
for a short time, you may continue driving.
All wheel drive (quattro)
Applies to: vehicles with all wheel drive

The all-wheel drive system distributes the driving
power variably to the front and rear axle to im-
prove the driving characteristics. It works togeth-
er with selective wheel torque control, which can
activate when driving through curves
=> page 104.
The all-wheel drive system is designed for high
motor power. Your vehicle is exceptionally power-
ful and has excellent driving characteristics both
under normal driving conditions and on snow and
ice. Always read and follow safety precautions
>A.

Z\ WARNING
— Even in vehicles with all wheel drive, you
should adapt your driving style to the cur-
rent road and traffic conditions to reduce
the risk of an accident.
— The braking ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not different from a two wheel drive vehi-
cle. Do not drive too fast because this in-
creases the risk of an accident.

108

— Note that on wet streets, the front wheels
can “hydroplane’” if driving at speeds that
are too high. Unlike front wheel drive
vehicles, the motor RPM does not increase
suddenly when the vehicle begins hydro-
planing. Adapt your speed to the road condi-

tions to reduce the risk of an accident.

Rear spoiler
Applies to: vehicles with retractable rear spoiler

a
id > z
oO


Fig. 113 Center console: button for the rear spoiler
The rear spoiler increases driving stability. The
rear spoiler extends automatically at speeds
above approximately 75 mph (120 km/h). It will
retract automatically when the speed drops be-
low approximately 50 mph (80 km/h).
You can also extend and retract the rear spoiler
manually.
> Extending: press > briefly.
> Retracting: press and hold 3% when driving at
speeds up to approximately 10 mph (20 km/h).
At speeds from approximately 10 mph (20
km/h) to 75 mph (120 km/h), press 3% briefly.
Messages
If the HB or Mturns on and a corresponding
message appears, the rear spoiler may not be
able to extend due to a malfunction. This could
change the vehicle's driving characteristics at
high speeds. Do not drive faster than 85 mph
(140 km/h).
The rear spoiler may be blocked. Clean the rear
spoiler compartment > page 237, close all vehi-
cle doors and lids, and wait several minutes until
the vehicle has completely turned off. If the indi-
cator light turns on again the next time the >