2015 AUDI A3 cruise control

90 Audi pre sense
Audi pre sense
Introduction
Applies to vehicles: with Audi pre sense basic or Audi pre
sense front
Within the limits of the system, pre sense ba­
sic and pre sense front can initiate steps to
protect vehicle occupants in certain danger ­
ous situations.
Critical driving situations can be recognized by
the pre sense front via a network of different
vehicle systems and can take steps to prepare
the vehicle occupants for a potential collision.
The pre sense front works with a radar sensor
and a video camera*.
It also functions within
the limits of the system when adaptive cruise
control* is switched
off.
General information
General information
App lies to vehicles: with Audi pre sense front or Audi
adaptive cruise control
A WARNING
Also follow the general information found
on
~ page 82, General information.
Audi pre sense basic
Descript ion
Applies to vehicles: with Audi pre sense basic
The function of the pre sense basic is activat­
ed at a speed of 10 mph (30 km/h) or higher.
The following functions can be triggered un­
der certain conditions within the limits of the
system:
- Tensioning of the safety belts (for example,
during heavy braking) : The front safety belts
have reversible belt pretensioners. If a colli­
sion does not occur, the safety belts loosen
slightly and are ready to trigger again .
- Closing the windows and the sunroof* (for
example, when over- or understeering): The
windows and the sunroof" close until there is only a small gap open. Audi drive select:
The deployment time is
adapted in dynamic mode.
A WARNING
-The pre sense basic cannot overcome natu- ral physical laws.
It is a system designed to
assist and it cannot prevent a collision. Do not let the increased safety provided
tempt you into taking risks. This could in­
crease your risk of a collision.
- The system can deploy incorrectly due to system-specific limits .
(D Tips
-Certain pre sense basic functions switch
off when ESC is switched off (sport
mode) or when driving in reverse .
- The pre sense basic functions may not be
available if there is a malfunction in the
ESC system or the airbag control mod­
ule .
- Note that with pre sense basic, the rever­
sible safety belt pretensioner on the
front passenger's side deactivates when
the front passenger's a irbag is deactivat­
ed.
Audi pre sense front
Description
Applies to vehicles: with Audi pre sense front or Audi
adapt ive cru ise control
Pre sense front informs you if the distance to
the vehicle ahead falls below the safe distance
for an extended period of time. It can warn of a possible collision and initiate braking ma­
neuvers, within the limits of the system .
When detected in time, the system can assess
dangerous situations where an object ahead
brakes suddenly or if your own vehicle is trav­
eling at a high speed and approaching an ob ­
ject that is moving more slow ly . If detection is
not possible, then pre sense front does not re ­
act.

Warnings
Applies to vehicles: with Audi pre sense fro nt or Audi
adaptive cruise control
Fig . 80 Instrument cluster: approach warning
The system recognizes various dangerous sit­
uations:
- Vehicles with adaptive cruise control: The
distance warning occurs if you drive too
closely to the object ahead for a long period
of time.
If the object ahead brakes strongly,
you would not be able to avoid a collision.
The ind icator light . indicates this.
- The
approach warning occurs when an ob­
ject ahead is traveling more slowly or brakes
strongly. When this warning occurs, it may only be possible to avoid a collision by
swerving or braking strongly. The message
Audi pre sense. Distance c::> fig . 80 and a
warning tone will warn you about the dan­ ger. For vehicles with adaptive cruise con­
trol, the. indicator light also turns on.
If you do not react enough or not at all to a
dangerous s ituation that was detected by the
system, pre sense front provides assistance by
applying the brakes .
- If a collision is imminent, the system will
first provide an
acute warning by braking
sharply. You will also be made aware of the
danger by the instrument cluster display
c::> fig. 80. For vehicles with adaptive cruise
control, the. indicator light also turns on .
-If you do not react to the acute warning, pre
sense front can brake with increasing force
within the limits of the system
l)_ This re­
duces the vehicle speed in the event of a col-
l l This is not available in some countries .
Audi pre sense 91
lision. The message Audi pre sense -Input
also appears.
- At low driving speeds, pre sense front can
begin complete deceleration shortly before
a collision
l) .
-If pre sense front determines that you are
not braking strongly enough when a colli­
sion is imminent, it can increase the braking
force.
A WARNING
--- Pre sense front cannot overcome natural
physical laws.
It is a system designed to
assist and it cannot prevent a collision .
The driver must always intervene. The driver is always responsible for braking
at the correct t ime. Do not let the in­
creased safety provided tempt you into
taking risks. This could increase your risk
of a collision.
- The system can deploy incorrectly due to
system-specific limits .
- Please note that the sensor does not al­
ways detect all objects . This increases
the risk of a collision.
- Pre sense front does not react to people
or animals or objects that are crossing
the vehicle's path or are difficult to de­
tect
c::> page 82, General Information.
- Reflective objects such as guard rails or
the entrance to a tunnel, heavy rain and
ice can affect the function of the radar
sensor and the system's ability to detect
a collision risk .
- Lack of attention can cause collisions,
other accidents and serious personal in­
juries. The pre sense front is an assist
system and cannot prevent a collis ion by
itself. The driver must always intervene.
The driver is always responsib le for brak­
ing at the correct time.
- Always pay close attention to traffic,
even when the pre sense front is switch-
ed on. Be ready to intervene and be ready .,_

92 Audi pre sense
to take complete control whenever nec­essary. Always keep the safe and legal
distance between your vehicle and
vehicles up ahead .
- Pre sense front works within limits and
will not respond outside the system lim­
its, for example when approaching a
stopped vehicle or stationary obstacle
(end of a traffic jam or vehicle that has
broken down in traffic).
- Always remember that the radar sensor
for the pre sense front works only within
defined detection and range limits that
may prevent the proper detection of oth­
er vehicles.
- The radar sensor's function and range
can be reduced by rain, snow and heavy
spray. Moving vehicles up ahead may not
be promptly detected or may not be de­
tected at all.
- Reflective surfaces including crash barri­
ers or tunnel entrances may impair the
function of the radar sensor.
(]) Note
The sensor can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. The pre sense front sensor can
be damaged by this. Have your authorized
Audi dealer or qualified repair facility
check their function.
@ Tips
- You can cancel the braking with increas­ ing force that is initiated by the system
by braking yourself, by accelerating no­
ticeably or by swerving.
- Driver messages about pre sense
¢page 92.
- Keep in mind that pre sense can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to re­
duce the risk of damage or injury.
- Certain pre sense front functions switch off when ESC is switched off (sport
mode) or when driving in reverse. -
The pre sense front functions are not
available if there is a malfunction in the
adaptive cruise control* system
¢page
88 or ¢page 92.
- Keep in mind that pre sense front can
brake unexpectedly. Always secure any
cargo or objects that you are transport­
ing to reduce the risk of damage or in­
jury .
Settings in the Infotainment system
Applies to vehicles: wit h Audi pre sense front or A udi
adap tive c ru ise contro l
.,. Select in the MMI: I MENU I button> Systems
control button or Car systems > Driver as­
sistance
> Audi pre sense.
Switching the system on and off
Audi pre sense (System): If the system is
switched off, it switches on again automati­
cally once the ignition is switched on again.
System -Switch Audi pre sense on-off. With
this, you can switch the prewarning and the
braking intervention from Audi pre sense on
or off .
Prewarning -The distance and approach
warnings can be switched
on/off.
(D Tips
- If you restrict or switch off the ESC, the
pre sense also switches itself
off
¢ page 187.
-Switch the pre sense off when you a re
loading the vehicle onto a vehicle carrier,
train, ship or other type of transporta­
tion. This can prevent undesired warn­
ings from the pre sense system.
Driver messages
Applies to vehicles: wit h Audi pre sense o r A udi ada ptive
cruise co ntrol
Audi pre sense currently unavailable. No sen­
sor vision
This message appears if the sensor view is ob­
structed, for example by leaves, snow, heavy .,.

102 Audi drive select
Audi drive select
Driving settings
Introduction
Applies to vehicles: with Audi drive select
Aud i d rive select makes it possibl e to expe ri­
e nce diffe ren t types of vehi cle sett ings in o ne
ve hicl e. The dr ive r can se lect from three
c om­
fort , auto and dynamic modes using the t.'i:.:1
button in the center conso le or the MM I to
switch between a sporty an d a comfortable
driving mode, for examp le. In the
individual *
mode, the sett ings can be ad justed to your
pe rsonal preferences. This makes it poss ib le
to comb ine settings such as a sporty eng ine
tuni ng with lig ht steer ing.
A WARNING ,_ -
Im prope r use of the A udi drive select can
ca use colli sion s, oth er a cciden ts an d se ri­
ou s pe rson al injury.
Description
Applies to vehicles: with Audi drive select
The vehicle setup in each mode depends on
the vehicle's features. However, t he engine
and steering are always affected .
Engine and automatic transmission*
Depe nding on t he mode, the e ng ine and au to­
mat ic tra nsm iss ion * respond more quickly or
in a more b alance d manner to acce lerator
pedal movements.
Adaptive dampers (Audi magnetic ride)*
The adaptive da mpers use senso rs to reco rd
i nfo rmat ion rega rding s teering moveme nts,
b rak ing and a cce le ra ti on operat ions by t he
d river, road s urface, driving speed, an d load.
W ith Aud i drive se lect yo u can adjust the
adaptive dampe rs sporty (dynamic), comfort­
ab le (comfort) or balanced (auto).
Steering
T he stee ring ad apts in te rms o f stee ring assis­
tance . There are different modes
~page 103 .
Indirect stee ring that moves eas ily as in com- f
ort mode is espec ially suited to long drives
o n a hig hway. The dynam ic mode provi des
spo rty, direct steering.
F o r vehicles wi th progressive stee ring * the
stee ring pe rformance is mo re agile.
Cornering light*
T he co rne ring light adjusts when driv ing on
c u rves a t speeds between 6 mph ( 10 km/h)
and 68 mph (1 10 km/h). The pivo ting act io n
and the light ing a re a lso adapted to the
mode.
Adaptive cruise control*
T he be hav ior when accelerating can be adjust­
ed from comfor tab le to spor ty, depend ing on
t h e Au di drive sele ct mo de. Ad aptive cr uise
control also responds to the driv ing behavior
of the vehicle ahead in a more co nservative or
spo rty manne r.
(D Tips
In some mo dels, the maxim um vehicle
speed can on ly be reache d in t he a uto and
d ynam ic modes.

Selecting the driving mode
Applies to vehicles: with Audi drive select
You can choose between comfort, auto, dy­
namic and individual* .
Fig. 89 Center conso le : drive select button
Fig. 90 MMI: dr ive se lect
.. To set the mode, press the ~:/:a button
N
-N 0 ::> a, Q)
Q fig . 89 repeatedly until the desired mode
is d isplayed in the instrument cluster . Or
Adjusting the Individual mode Audi drive
select 103
.. Select in the MMI: I MENU I button > Systems
or Car systems > comfort, auto, dynamic or
individual*.
You can change the driving mode when the ve­
hicle is stationary or while driving. If traffic
permits, after changing modes, briefly take
your foot off the acce lerator pedal so that the
recently selected mode is also activated for
the engine .
comfort -provides a comfort-oriented vehicle
setup and is suited for long drives on high­
ways.
auto -provides an overal l comfortable yet dy­
namic driving feet and is suited for every day
use.
dynamic -gives the driver a sporty driving fee l
and is suited to a sporty driv ing style .
individual * -¢ page 103.
The last chosen mode is retained when the ve­
hicle is started aga in .
.&_ WARNING
Pay attention to traffic when operating the
drive select to prevent potential risk of an
accident.
You can adjust the vehicle settings to your personal preferences .
.. Select: IM ENU I button > Systems or Car sys­
tems > Set individual
control button. Once
you select the menu, you will automatica lly
drive in the
individual* mode.
After you have closed the settings, yo u are au­
tomatically driving in the
individual* driving
mode .
Systems comfort
Engine
and transmission comfortable
Steering comfortable
Cornering light* comfortable
Audi adaptive cruise control* comfortable The
equipment in your vehicle will determine
which settings you can adjust . The following
table gives an overview of the characteristics .
auto dynamic
balanced sporty
ba lan ced sporty
ba lanced sporty
ba lanc ed sporty

the overload. The ml indicator light
turns on and a message appears
Q page 111 when the clutch is overload­
ed .
-If the engine must remain running, never
have any driving position engaged when
checking under the hood . Make sure the
selector lever has securely engaged and
is locked in P with the parking brake set
Q page 210. Otherwise, any increase in
engine speed may set the vehicle in mo­
tion, even with the parking brake set.
(y Note
- When stopping on an incline, do not try
to hold the vehicle in place by pressing
the accelerator pedal while a driving gear
is selected. This can cause the automatic
transmission to overheat and can dam­
age it. Set the parking brake or press the
brake pedal to prevent the vehicle from
rolling.
- Allowing the vehicle to roll when the en­
gine is stopped and th@ selector lever is
in the N position will damage the auto­
matic transmission because it is not lu­
bricated under those circumstances .
- The transmission can overheat and be
damaged under certain driving and traf­
fic conditions such as frequent starts,
creeping for a long time , or stop-and-go
traffic. When the
ml or . indicator
light turns on, stop the vehicle at the
next opportunity and let the transmis­
sion cool
r::!> page 111.
-Allowing the vehicle to roll when the en­
gine is stopped will damage the S tronic
transmission because it is not lubricated
<=> page 261, Emergency towing with
commercial tow truck .
For safety reasons, the parking brake re­
leases automatically only when the driver's
door is closed and driver's safety belt is
fastened.
Automatic transmission 109
Hill descent control
App lies to vehicles : wi th S tronic tra nsmi ssio n
Hill descent control assists the driver when
driving down inclines .
Hill descent control is activated when these­
lector 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
incline. Hill descent control tries to maintain
the speed achieved 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 sh ift down farther than 3rd gear, it
may be necessary to shift into tiptronic mode
in very steep areas. In this case, shift into 1st
or 2nd gear in tiptronic mode to use the en­ gine's braking force to relieve the brakes .
Hill descent control switches off once the in­
cline levels out or you press the accelerator
pedal.
On vehicles with a cruise control system*
Q page 79, hill descent control is also activat­
ed when the speed is set.
A WARNING
-
-
Hill descent control cannot overcome
physical limitations, so it may not be able
to maintain a constant speed under all
conditions. Always be ready to apply the brakes .
•

This will help ensure that vehicle function,
performance and safety are not impaired
c::> _& .
Attempting to wo rk on electronic components
and the softwa re used with them can cause
malfunctions. Because of the way electronic
components are interconnected with each
other, such malfunctions can also have an ad­
verse affect on other systems that are not di­
rectly involved . Th is means that you risk both
a substantial reduction in the operat ional
safety of you r vehicle and an increased wear of
ve hicle parts
c::> ,& .
Author ized Audi dealers w ill perform this
work in a profess ional and competent manner
or, in special cases, refer you to a professional
company that specializes in such mod ifica­
tions.
A WARNING
Imprope r repairs and modifications can
change the way vehicle systems work and
cause damage to the veh icle and ser ious
personal in jury.
(D Note
-
If emergency repairs must be performed
elsewhere, have the ve hicle examined by
an authorized A udi dealer as soon as possi­
ble.
Declaration of
Compliance, Telecom­
munication and
Electronic Systems
Radio Frequency Devices and Radiocommuni­
cation Equipment User Manual Notice.
The manufacturer is not responsible for any
radio or TV interference caused by unauthor­
ized modifications to th is equ ipment.
De vic es
The fo llowing devices each comp ly with FCC
Part 15 .19, FCC 15.21 and RSS-Gen Issue 1:
- Adaptive cruise control*
Con sumer In formation 2 7 1
- Audi side assist*
-Cell phone package*
- Convenience key*
- Electron ic immobilizer
- Homelink u niversal remote control*
- Remote control key
FCC Part 15.19
T his device complies with part 15 of the FCC
Ru les. Operation is subject to the fo llowing
two conditions:
(1) This device may not cause harmful inte r­
ference, and
(2) this device must accept any i nterference
received, including interference that may
ca use undes ired operation .
FCC Part 15.21
CAUTION:
Changes or mod ifications not expressly ap­
proved by the party responsible for compli­
ance could vo id the user's authority to operate
the equ ipment.
RSS-G en Issu e 1
Operation is subject to the fo llowing two con­
ditions:
(1) this device may not ca use interference,
and
( 2 ) this device must ac cep t any i nte rfe rence ,
i ncl uding in terference tha t may cause unde­
s ir ed opera tion of the device.
•
•

272 Index
A
A/C (a utomatic cl imate control system)
A/C (manual cl imate control system)
ABS 66
65
refer to An
ti-lock braking system . . . . . 185
Accessories . . . . . . . . . . . . . . . . . . . . S6, 270
Active lane ass ist . . . . . . . . . . . . . . . . . . . . 94
Activating vibration wa rning .. .. .. .. .. 96
Adj ust ing steering t ime .... .. .. .... .. 96
C lean ing the camera area .. .. .. .. .. . 20 2
Dr iver messages . . . . . . . . . . . . . . . . . . . . 95
I ndicator light . . . . . . . . . . . . . . . . . . . . . 95
switch ing on and off . ... .. .. .. .... .. 95
Adapt ive cruise control . . . . . . . . . . . . . . . . 82
Automatic t ra nsm ission ... .. .. .... .. 86
C lean ing the senso r ..... .. .. .. .. .. . 202
D river messages . . . . . . . . . . . . . . . . . . . . 88
General Information . . . . . . . . . . . . . . . . 82
Request for driver intervention . . . . . . . . 88
Stop-and-go-traffic . . . . . . . . . . . . . . . . . 86
Adapt ive dampers .......... .. .. .... . 102
I ndicator light . .. ..... ... .. .. .... .. 25
Adapt ive light . . . . . . . . . . . . . . . . . . 42, 102
I ndicator light . . . . . . . . . . . . . . . . . . . . . 25
Adding W indshield washer fluid ..... .. .... . 224
Ad justing ai r dist ribution (Climate con trol
system) ..... ... .. ..... ... .. .. .... .. 67
Ad justing a ir vents ......... .. .. .... .. 68
Ad justing a ir vents (manual climate co n-
trol system) . . . . . . . . . . . . . . . . . . . . . . . . . 65
Ad justing automatic headlights . .. ... ..
44
Ad justing the center conso le lighting .... 45
Ad justing the temperat ure
manual climate control system . . . . . . . . 65
advanced key
refer to Convenience key . . . . . . . . . . . . . 73
A irbag .. .. .. ... .......... .. .. .. .. . 14 0
I nd icator ligh t . . . . . . . . . . . . . . . . . . . . . 2 1
A irbag system ... ....... ... .. .. .. .. . 161
Advanced Airbag System ....... .. .. . 144
Advanced Airbag System components . 148
Ca re . .. .. .. ............. .. .. .. .. . 156
C hi ldren . .... ........... .... .... . 168
C hil d restra ints ........... .. .. .... . 168
Components (front airbags) . ... .. .. . 1 48 Danger of fitting a ch
ild seat on the front
passenger seat ... .. ... ..... ... .. .. 142
Disposa l .. .. .. .. ... .. ..... ... .. .. 156
Front a irbags . . . . . . . . . . . . . . . . 144, 146
How do the front airbags work? .. .... 150
How many a irbags does my vehicle
have? ...... .. .. .. ... ... ... .. .. .. 148
How the Advanced Airbag System com-
ponen ts wo rk togethe r ......... .. .. 150
Im port ant sa fe ty inst ru cti ons on the
k nee airbag system .. .. ..... ... .. .. 159
Impo rtant things to know .. ... ... . .. 140
Knee airbags ..... .. ... ..... ... .. .. 157
Monitoring .... .. ............. .... 152
PASSENGER AIR BAG OFF light ... .... 153
Repairs ... .... .. ............. .... 156
Safety instructions ................. 155
S ide a irbags ... .. ... .. .. ... ..... .. 160
S ide curtain airbags ... ...... ... .. .. 163
Warning/Indicato r lights ..... .. .. .. 152
When must the system be inspec ted? . 152
Alarm system
refer to Anti-theft alarm system . . . . . . . 31
Alcantara clean ing .............. .... 204
Al ignment pi n (changing the whee l) .. .. 24 7
All-weather lights (LED headlights) . .. .. . 42
All-wheel drive Winter tires ..... .. ... ..... ... .. .. 240
All wheel d rive . . . . . . . . . . . . . . . . . . . . . 190
Alternator
refer to A lternator (indicator light) . .. . 20
Alternato r (indicato r light) .. ... .. .. .. . 20
Amb ient lighting .. ............. .... . 45
Anti-free ze
refer to Eng ine coolant
216
Anti -lock b raking system . ..... ... .. .. 185
Indicator light ... ... .. ..... .... . .. . 22
An ti-s lip reg ulatio n ............. .. .. 185
Indi cator ligh t ... ............. .. ... 22
Anti -theft a la rm system . . . . . . . . . . . . . . . 31
Anti-theft systems Electronic immob ilizer .. ..... ... .. .. . 36
Artific ia l lea ther cleani ng ........... .. 20 4
ASR
refer to Anti -slip regulation
A udi active lane assist 185
refer to Active
lane ass ist ....... .... . 94