Brake assist AUDI TT 2021 Owner´s Manual

8S1012721BE
Driving

emergency release can be used if this hap-
pens > page 88.
Selector lever lock
The selector lever lock prevents you from select-
ing a gear accidentally, causing the vehicle to
roll.

BFV-0112

Fig. 88 Selector lever lock
To release the selector lever lock:
> Switch the ignition on.
> Press the brake pedal while pressing the inter-
lock button.
Automatic shift lock (ASL)
The selector lever is locked in the "P" and "N" po-
sitions when the ignition is switched on. You
must press the brake pedal to select another po-
sition. You must also press the interlock button if
you are moving from the "P" position. The follow-
ing message appears in the display when the se-
lector lever is in the "P" or "N" position to remind
the driver:
To select a gear, please press brake pedal and
press lock button on selector lever
The automatic shift lock only functions when the
vehicle is stationary or at speeds below 1 mph
(2 km/h). At higher speeds, the lock is automati-
cally deactivated in the "N" position.
The selector lever is not locked when shifting
quickly through "N", for example from "R" to "D".
This makes it possible to free the vehicle when it
is stuck by “rocking” it. The selector lever lock en-
gages if the lever stays in the "N" position longer
than approximately two seconds when the brake
pedal is not pressed.
Interlock button
The interlock button in the selector lever handle
prevents you from moving the selector lever in-
advertently while in some selector lever posi-
tions. The positions that require the interlock
button to be pressed are marked in color in the il-
lustration > fig. 88.

Z\ WARNING
Read and follow all WARNINGS. > A\ in Selec-
tor lever positions on page 82.
G) Tips
— If the selector lever does not engage, there
is a malfunction. The engine is disabled to
prevent the vehicle from driving off uninten-
tionally. To allow the selector lever to en-
gage again, proceed as follows:
— Briefly press the brake pedal.
— If the vehicle does not move forward or in
reverse even though a drive position is se-
lected, proceed as follows:
— If the vehicle does not move in the desired
direction, the system may not have engaged
the drive position correctly. Press the brake
pedal
and select the drive position again.
— If the vehicle still does not move in the de-
sired direction, there is a system malfunc-
tion. See an authorized Audi dealer or au-
thorized Audi Service Facility for assistance
to have the system checked.


The transmission shifts up and down automati-
cally when in the driving gears.

Fig. 89 Section of the center console: selector lever with
interlock button
83
>

8S1012721BE
Driving


— If the engine must run while you are working
in the engine compartment with the hood
open, make sure a gear is not engaged. The
selector lever must be firmly in the P posi-
tion and locked in place and the parking
brake must be set > page 200. Otherwise,
the vehicle could begin moving when in-
creasing the engine speed, even with the

parking brake set.

() Note
— If you have to stop on an incline, always
press the brake pedal to hold the vehicle in
place to reduce the risk of the vehicle rolling
backward. Do not try to hold the vehicle in
place by pressing and holding the accelera-
tor pedal. The transmission can overheat,
which increases the risk of damage.
— Allowing the vehicle to roll when the engine
is stopped and the selector lever is in the N
position will damage the automatic trans-
mission because it is not lubricated under
those circumstances.
— The transmission can overheat and be dam-
aged under certain driving and traffic condi-
tions such as frequent starts, creeping fora
long time, or stop-and-go traffic. When the
i or os] indicator light turns on, stop the
vehicle at the next opportunity and let the
transmission cool > page 87.
— Allowing the vehicle to roll when the engine
is stopped will damage the S tronic trans-
mission because it is not lubricated
= page 250, Towing.
@® Tips
For safety reasons, the parking brake is re-
leased automatically only when the driver's
safety belt is fastened.
Hill descent control
The hill descent control system assists the driver
when driving down hills.
Hill descent control is activated when the selec-
tor lever is in the "D" or "S" position and you
press the brake pedal. The transmission auto-

matically selects a gear that is suitable for the
hill. Hill descent control tries to maintain the
speed that was selected at the time of braking,
within physical and technical limitations. If may
still be necessary to adjust the speed with the
brakes. Because hill descent control cannot shift
down farther than 3rd gear, it may be necessary
to shift into tiptronic mode in very steep areas. In
this case, shift manually into 1st or 2nd gear in
tiptronic mode to use the engine's braking force
to relieve the brakes.
Hill descent control switches off once the hill lev-
els
out or if you press the accelerator pedal.
On vehicles with a cruise control system*
= page 89, hill descent control is also activated
when the speed is set.

ZA\ WARNING
Hill descent control may not be able to main-
tain a constant speed under all conditions. Al-
ways be ready to apply the brakes.
Shifting manually (tiptronic mode)
The tiptronic mode allows the driver to shift the
gears manually.


| 8Fv-0114]
Fig. 90 Center console: shifting manually with the selector
lever


Fig. 91 Steering wheel: shift paddles*
8s

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

Driving

Selector lever emergency release

|
BFV-0266]

Fig. 93 Selector lever: using the emergency release to
move out of the Park position
The emergency release mechanism is located in
the right area under the selector lever shift gate.
Using the emergency release can be complicated.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
You will need the screwdriver from the vehicle
tool kit to release it > page 242. Use the flat side
of the reversible screwdriver blade.
Removing the cover
> Set the parking brake to secure your vehicle
from rolling away. If this is not possible, secure
your vehicle from rolling using another meth-
od.
> Switch the ignition off.
> To loosen the shifter boot, carefully insert the
flat side of the screwdriver sideways into the
slit near the shifter boot > fig. 92.
> Carefully pry the shifter boot out with the
screwdriver while gripping the boot at the fold
and pulling it upward and out of the opening
> fig. 93.
> Fold the shifter boot up around the shifter
knob.
88
Selector lever emergency release
> Press and hold the yellow release button with
the screwdriver.
> At the same time, press the release button on
the selector lever (1) and move the selector lev-
er to the “N” position.
Reattaching the cover
> Clip the shift cover back into the shift gate.

ZX WARNING
— The parking lock may only be released using
the emergency release if the parking brake
is set. If it is not working, secure the vehicle
from rolling using the brake pedal or other
suitable means, such as blocking a front and
a rear wheel. An unsecured vehicle may roll,
which increases the risk of an accident.
— Only activate the emergency release while
ona level surface or a slight slope.
—To reduce the risk of an accident, you must
not drive when the emergency release is ac-

tivated.

8S1012721BE
Assist systems

Assist systems
Speed warning system
Applies to: vehicles with speed warning system
The speed warning system helps the driver to
stay below a specified maximum speed. A warn-
ing threshold can be set in the Infotainment sys-
tem for this purpose.
Once the speed slightly exceeds the stored
threshold, the speed warning system will alert
the driver with an indicator in the instrument
cluster and a warning tone. Once the speed drops
below the stored maximum speed, the indicator
will turn off.
Setting a threshold is recommended if you would
like to be reminded when you reach a certain
maximum speed. Situations where you may want
to do so include driving in a country with a gener-
al speed limit or if there is a specified maximum
speed for winter tires.
@) Tips
Regardless of the speed warning system, you
should always monitor your speed using the
speedometer and make sure you are adhering
to the legal speed limit.
Setting the warning threshold
Applies to: vehicles with speed warning system

> Select in the Infotainment system: [MENU] but-
ton > Vehicle > left control button > Driver as-
sistance > Speed warning > Manual.
Messages
Applies to: vehicles with speed warning system
ol Manually set speed limit XX mph
(km/h) exceeded

The stored speed was exceeded.
Cruise control system
Applies to: vehicles with cruise control system
The cruise control system assists the driver in
maintaining a constant speed above approxi-
mately 15 mph (20 km/h). The system maintains
the desired speed by braking and accelerating.

ZA WARNING
— Always pay attention to the traffic around
your vehicle when the cruise control system
is in operation. As the driver, you are always
responsible for controlling your vehicle
speed and the distance between your vehicle
and
other vehicles.
— For safety reasons, cruise control should not
be used in the city, in stop-and-go traffic, on
winding roads, and when road conditions
are poor (such as ice, fog, gravel, heavy rain,
and conditions that could lead to hydroplan-
ing), because this increases the risk of an ac-
cident.
— Switch the cruise control off temporarily
when driving in turning lanes, highway exits,
or in construction zones.
—To reduce the risk of an accident, you should
only resume the stored speed if it is suitable
for the current traffic conditions.
@) Note
Before driving downhill a long distance ona
steep hill, decrease your speed and select a
lower gear. This makes use of the engine
braking effect and reduces the load placed on
the brakes.
@) Tips
The brake lights turn on when the brakes are
applied automatically.

89

Assist systems

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

BFV-0220



Fig. 94 Operating lever: switching the system on
Requirement: the ignition must be switched on.
> To switch the system on, pull the lever toward
you to position (4).
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, the regulating functions may
shut off automatically.


Preselecting or activating a cruise co
speed
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 90, fig. 94.
> To activate the cruise control speed, pull the
lever toward position (@) while driving.
> 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 Gs or =) indicator light in the instrument
cluster.
90
Changing the cruise control speed
Applies to: vehicles with cruise control system
Requirement: the system must be switched on.
> To increase or decrease the cruise control speed
in small increments, tap the lever up to the
first level toward @/C) > page 90, fig. 94.
> 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 [M4 or RSM indicator
light will be displayed 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 90, fig. 94, or
» Press the brake pedal.

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

8S1012721BE
Assist systems

Seem ea
Applies to: vehicles with cruise control system
When you switch the system off, the cruise con-
trol speed will be erased.
Requirement: the system must be switched on.
> To switch the system off, press the lever toward
@ (locked into place) > page 90, fig. 94, 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 de-
activated. There is a temporary malfunction, for
example the brakes are overheating. Switch the
cruise control system on again later.
Lap timer
Introduction
Applies to: vehicles with lap timer
You can measure and analyze lap times with the
lap timer in the display. The time is measured in
minutes, seconds and 1/10 seconds. With lap
times longer than 60 minutes, the hour is also
shown and the display of 1/10 seconds is re-
moved.
The time measurement on an individual lap ends
after 99 hours 59 minutes and 59 seconds. A new
lap starts automatically after that.
You can control the lap timer using the controls
on the multifunction steering wheel > page 72.

ZA WARNING
Your focus should always be on driving your
vehicle safely. As the driver, you have com-
plete responsibility for safety in traffic. To re-
duce the risk of an accident, only use the lap
timer functions in such a way that you always
maintain complete control over your vehicle in
all traffic situations.


@) Tips
You can retrieve information from the trip
computer while the lap timer stopwatch is
running.
Caer mi ra Opening the lap
Applies to: vehicles with lap timer


Fig. 95 Multifunction steering wheel: controls
[RAH-£493]
@—» 0:07.2——_@
Best lap 0:29.0
0:30.5 ETO)
New Lap
Fig. 96 Instrument cluster: lap timer
Opening the lap timer

> Select in the Infotainment system: [MENU] but-
ton > Vehicle > left control button > Lap times
> Turn the left thumbwheel @) © fig. 95 until
Start lap 1 by driving off or Start by driving
off appears.
> Press the left thumbwheel to confirm the selec-
tion.

Timing laps
> To measure the lap time, press the left thumb-
wheel again to confirm the New lap menu item.
This starts timing the next lap at the same
time. The last time measurement moves up to
the top line @). The current lap time is in the
center line in area @).
As long as the [@J symbol is green during the cur-
rent lap time measurement, the current timeis >
91

Intelligent Technology

Intelligent Technology
Electronic Stabilization
Control (ESC)
Electronic Stabilization Control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critical sit-
uations such as the vehicle oversteering and un-
dersteering or the wheels are spinning. The
brakes are applied or the motor torque is reduced
in order to stabilize the vehicle. When the ESC
engages, the B indicator light flashes in the in-
strument cluster.
The following systems are integrated in the ESC:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking when brak-
ing. The vehicle can still be steered even during
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal. A pulsing in the
brake pedal indicates that the system is acting to
stabilize the vehicle.
Brake assist
The brake assist system can decrease braking dis-
tance. It increases braking power when the driver
presses the brake pedal quickly in emergency sit-
uations. You must press and hold the brake pedal
until the dangerous situation is over.
Anti-Slip Regulation (ASR)
ASR reduces drive power when the wheels begin
spinning and adapts the power to the road condi-
tions. This will increase the driving stability.
Electronic Differential Lock (EDL)
The EDL applies the brakes to wheels that are
slipping and transfers the drive power to the oth-
er wheels. This function is not available at higher
speeds.
In extreme cases, EDL automatically switches off
to keep the brake on the braked wheel from over-
heating. The vehicle is still functioning correctly.
EDL will switch on again automatically when con-
ditions have returned to normal.
104
Power steering
The ESC can also support vehicle stability
through steering.
Selective wheel torque control
Selective wheel torque control is used when driv-
ing on curves. Braking is targeted toward the
wheels on the inside of the curve as needed. This
allows more precise driving in curves.
Automatic post-collision braking system
The automatic post-collision braking system can
help to reduce the risk of sliding and of addition-
al collisions after an accident. If the airbag con-
trol module detects a collision above a certain ve-
hicle speed, the vehicle is braked by the ESC.
The vehicle does not brake automatically if one of
the following occurs:
— The driver presses the accelerator pedal
—The braking force generated by the pressed
brake pedal is greater than the braking force
that would be initiated by the system
— The ESC, the brake system, or the vehicle elec-
trical system is not functioning

Z\ WARNING
— The ESC and its integrated systems cannot
overcome the limits imposed by natural
physical laws. This is especially important on
slippery or wet roads. If the systems begin
acting to stabilize your vehicle, you should
immediately alter your speed to match the
road and traffic conditions. Do not let the in-
creased safety provided tempt you into tak-
ing risks. This could increase your risk of a
collision.
— Please note the risk of a collision increases
when driving fast, especially through curves
and on slippery or wet roads, and when driv-
ing too close to objects ahead. There is still
a risk of accidents because the ESC and its
integrated systems cannot always prevent
collisions.
— Accelerate carefully when driving on
smooth, slippery surfaces such as ice and
snow. The drive wheels can spin even when
these control systems are installed and this

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