brake sensor AUDI A3 CABRIOLET 2015 Owners Manual

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or
or
or
or
or Engine start system
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page 21
Convenience key
¢page Bl
Convenience key
¢page BO
Battery in remote control key
¢page 33
Defective light bulb warning
¢ page24
Headlight range control system*
¢ page 24
adaptive light*
¢ page24
Instruments and indicator lamps 17
or
/:
or Light/rain
sensor*
¢page24
Active lane assist*
¢page 100
Transmission
¢page 116
Other indicator lights
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Turn signals
¢page25
USA models: Cruise control sys ­
tem*
¢ page BS
Canada models : Cruise control
system*
¢page BS
Adapt ive cru ise control*
¢ page89
Adaptive cruise control* ¢page89
Adaptive cruise control* ¢page89
Active lane assist*
¢page 100
High beams
¢ page 51
Conven ience key
¢page 80
Electromechanical parking brake
¢ page 19
Adapt ive cru ise control*
¢page89
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Audi adaptive cruise control
Introduction
App lies to vehicles: with Audi adaptive cruise control
The adaptive cruise control system is a com bi·
nation of speed and distance regulation. It as ­
sists the dr iver by both regulat ing the speed
and maintain ing a distance to the object
ahead, within the abilities of the system. If
the system detects an object, adaptive cru ise
control can brake and acce le rate your ve hicle.
This makes driving more comfortable both on l ong stretches of highway and in stop-and -go
traffic.
General Information
General information
Applies to vehicles: with Audi adaptive cruise co ntrol a nd
Audi pre sense fro nt
Fi g. 84 Front of vehicle: sensor
The genera l information applies to adaptive
cr uise control* and pre sense front *
c::>page95.
The radar se nsor a rea c::>fig. 84 must not be
covered w it h stickers, deposits or any other
obstructions as it may impair the function of
the adaptive cruise contro l and the pre sense
front. For information on cleaning, refer to
,:t 0 0 > l8
c::> page 204. The same applies for any modifi­
cations made in the front area.
The function of the adaptive c ruise control
system and pre sense front is lim ited in some
conditions :
Audi ad apti ve crui se control 8 7
- Objects can only be detected when they are
within the sensor range
c::> page 88,
fig. 87 .
-The system has a limited ability to detect
objects that are a short d istance ahead, off
to the side of your vehicle or moving into
your lane.
- Objects that are difficult to detect such as
motorcycles, veh icles with high ground
clearance or an overhanging load are detect­
ed late or not detected at all.
- When driving through curves
c::>page 88.
-With stationary objects c::> page 88 .
A WARNING
Always pay attent ion to traffic when adap­
tive cruise control is switched on and the
pre sense front is active
c::> page 95. As
the driver, you are s till respons ib le for
start ing and fo r ma inta in ing speed and
d is ta nce to o ther objec ts. The pre sense
front i s used to ass ist yo u. The dr iver must
al ways take ac tion to avo id a col lision . The
driver is always responsible for braking at
the correct time .
- I ncorrect use of the a daptive cr uise con ­
trol can cause collisions, ot her accidents
an d serio us pe rsonal inj ury .
- For safety reasons, do not use adaptive
cru ise contro l when driv ing o n roads with
many curves, when the road s urface is in
poor condition and/or in bad weather
(such as ice, fog, grave l, heavy ra in and
hydroplaning). Using the system unde r
these co ndit ions co uld res ult in a coll i­
sion.
- Sw itch adaptive cru ise cont ro l off tempo·
ra rily whe n driving in tu rni ng lanes, o n
expressway ex its or in construction
zones. T his preven ts the vehicle from ac ­
celerating to the se t speed when in t hese
situations .
- Th e adap tive cruise control system
will
not brake by i tsel f if you pu t your foo t on
the accelera to r pedal. Do ing so can ove r-
ride t he speed and distance reg ulat io n.
~

88 Audi adaptive cruise control
- When approaching stationary objects
such as stopped traff ic, adaptive cruise
control will not respond and pre sense
front will have limited function.
- The adaptive cruise control system and
pre sense front do not react to people,
animals, objects cross ing the road or on­
coming objects.
- The function of the radar sensors can be
affected by reflective objects such as
guard rai ls, the entrance to a tunnel,
heavy rain or ice.
- Never follow a veh icle so closely that you
cannot stop your vehicle safe ly. The
adaptive cruise control cannot slow or
brake the vehicle safely when you follow
another vehicle too closely. Always re­
member that the automatic braking
function ca nnot bring the veh icle to a
sudden or emergency stop under these
condit ions.
- To prevent unintended operation, always
switch ACC off when it is not be ing used.
(D Note
The sensor can be disp laced by impacts o r
damage to the bumper, whee l housing and
underbody . The adaptive cruise contro l
and pre sense front may become impaired
as a result . Have an authorized Audi dealer
or author ized Audi Service Facility check
their function.
In curves
Applies to vehicles: with Audi adaptive cruise control and
Audi pre sense fro nt
Fig. 85 Examp le: driv ing into a curve
When driving into a curve c::> fig. 85 and out of
a curve, the adaptive cruise control may react
to an object in the neighboring lane and apply
the brakes. You can prevent that by pressing
the accelerator pedal briefly .
Stationary objects
Applies to vehicles: with Audi adaptive cruise contro l and
Audi pre sense front
Fig. 86 Example: object chang ing lanes a nd stationary
object
Adaptive crui se control
The adaptive cruis e control system only reacts
to objects that are moving or that the system has a lready detected as moving. For examp le,
if a detected vehicle @tur ns or changes
lanes, the adaptive cruise control will not re­
act to a stopped vehicle @. Press the brake
pedal to slow your vehicle down .
Pre sense front
Pre sense front only reacts to stationary ob­
jects at low speeds.
Adaptive cruise control
Description
Applies to vehicles: with Audi adaptive cruise control
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Fig. 87 Detectio n ran ge

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Setting the driving program
Applies to vehicles: with Audi adaptive cruise control
A adaptive cruise con trol dr iving program is
adjustable on vehicles witho ut Audi dr ive se­
l ect* .
• Select in the MMI: the
I MENU I button > Car
> Systems * control button > Driver assis­
tance > Adaptive cruise control> Driving
program > Comfort/Standard/Dynamic.
Selecting the driving mode
Applies to vehicles: with Audi adaptive cruise co ntrol
The adaptive cruise contro l driving program is
ad justab le for veh icles w ith Audi drive se lect
using the driving mode.
• Select the desired driving mode
Comfort,
Auto , Dynamic or Individual *
with the knob
Qpage 107 .
Request for driver intervention
Applies to vehicles: with Audi adaptive cruise co ntrol
Fig. 93 Inst rumen t cluster: dr iver inte rve ntion reques t
In some s ituations, the braking from the
adaptive cruise control system is not enough
to maintain enough distance to the object
ahead . In these s ituations, the system will re ­
quest you to take action .
The . indicator light and the graphic in the
display wi ll wa rn yo u about the danger
Q fig. 93. You will a lso hear an aud io signa l.
Press the brake pedal to s low your vehicle
down.
Audi adaptive cruise control 93
Driver messages
Applies to vehicles: wit h Aud i adapt ive c ru ise control
IIJ ACC: unavailable
The system cannot guarantee that it will de­
tect objects correctly and is switched off. The
sensor was moved or is faulty. Drive to your
authorized Aud i dea ler or a uthorized Audi
service facility immediately to have the mal­
function corrected.
fl ACC: currently unavailable. No sensor vi­
sion
fl ACC and Audi pre sense: currently un·
available. No sensor vision No sensor visio n
This message appears if the sensor v iew is ob­
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor
Q page 87,
fig. 84.
Ill ACC: currently unavailable . Gradient too
steep
The road exceeds the maximum possible an­
gle for safe adaptive cruise control operat ion.
The adaptive cru ise control cannot be switch­
ed on.
Ill ACC: only available in D, Sor M
Select the D/S or M selector lever position.
Ill ACC: parking brake applied
The adaptive cru ise control system switches
off automatically if the parking b rake is set .
The adaptive cruise control is available again
after re leas ing the parking brake.
Ill ACC : currently unavailable . Stabilization
control input
This message appears if the Electronic Stabili­
zation Control (ESC) is taking action to stab i­
lize the veh icle . In this case, adapt ive cru ise
control switches off automat ica lly.
Ill ACC off: manual control!
This message appears if the vehicle rolls back
when starting on a s light incline, even though
ACC is active. Press the brake pedal to prevent
the vehicle from rolling or starting to move.
1111-

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Audi pre sense Introduction
Applies to vehicles: with Audi pre se nse basic or Aud i pre
sense front
W ithin the limits of the system, pre sense ba­
sic and pre sense front can initiate steps to
protect vehicle occupants in certa in danger­
ous situations.
Critical driving situat ions can be recognized by
the pre sense front via a network of different
veh icle systems and can take steps to prepare
the vehicle occupants for a potentia l co llision.
The pre sense front wo rks 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
Applies to vehicles: with Audi pre sense front or Audi adaptive cruise control
A WARNING
Also follow the general information found
on
~ page 8 7, General information.
Audi pre sense basic
Description
Applies to vehicles : with Audi pre se nse basic
The function of the pre sense basic is activat­
ed at a speed of 20 mph (30 km/h) or higher.
The following functions can be triggered un­
der certain conditions within the limits of the
system:
- T ensioning of the safety be lts (for example,
during heavy braking) : The front safety belts
have reversible belt pretensioners. If a colli­
s ion does not occur, the safety belts loosen
slight ly and are ready to trigger again .
- Closing the windows (for example, if under­
or oversteering): The windows close until
there is only a small gap open.
Audi pre sense 95
Audi drive select: The dep loyment 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 collis ion. Do
not let the increased safety provided
tempt you into taking risks. This could in­
crease your r isk of a collis ion.
- The system can deploy incorrectly due to
system-specific limits.
(D Tips
- Certa in pre sense bas ic functions switch
off when ESC is switched off (sport
mode) or when dr iving in reverse.
- The pre sense basic functions may not be
available if there is a ma lfunction in the
ESC system or the airbag control mod­
ule.
- Note that with pre sense bas ic, the rever­
sible safety belt pretensioner on the
front passenger's side deactivates when
t he fron t passenger's airbag is deactivat­
ed.
Audi pre sense front
Description
Applies to vehicles : wit h Audi pre sense front or Audi
adaptive crui se con trol
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 situat ions where an object ahead
brakes suddenly or if your own veh icle is trav­
el ing at a high speed and approaching an ob ­
ject that is moving more slow ly . If detection is
not poss ible, then pre sense front does not re­
act.
•

96 Audi pre sense
Warnings
App lies to vehicles: with Audi pre sense front or Audi
adaptive cruise control
Fig. 94 Instrument cluster: approac h 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 t ime. If the object ahead brakes strongly,
you would not be able to avoid a coll ision.
The indicator light . indicates this.
- The
approach warning occurs when an ob­
ject ahead is traveling mo re 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 ¢ fig . 94 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 situation that was detected by the
system, pre sense front provides ass istance 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
¢
fig. 94. F or 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
ll. This re­
duc es the vehicle speed in the event of a col-
l l Thi s is not available in som e coun tries .
lision. The message Audi pre sense -Input
also appears.
- At low driving speeds , pre sense front can
begin complete deceleration shortly before
a collision
ll .
- If pre sense front determines that you are
not braking strongly enough when a colli ­
sion is immin ent, it can increas e 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 time. 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 ¢
page 87, 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 lead to collisions,
other accidents and serious injuries. pre
sense front is an assistance system and
cannot prevent a collision by itself . The
driver must always intervene. The driver
is always responsible for braking at the
right time.
- Always pay attention to traffic, even
when pre sense front is switched on. Al-
ways be ready to intervene and take over
complete control of the vehicle whenever
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it is necessary. Always follow traffic laws
regarding mainta ining a safe distance
between your vehicle and veh icles ahead.
- pre sense front works within certain lim­
its and cannot react to situations that
are outside of the system lim its, such as
when approaching a stationary vehicle or
a stationary obstacle (the end of a traffic
jam or a vehicle that has broken down) .
-Always keep in m ind that the radar sen ­
sor for pre sense front only works within defined detection zones, which means
other vehicles may not alw ays be detect­
ed correct ly.
- T he function and range of the radar sen­
sor c an be impaired by rain, snow and
heavy mist. Vehicles ahead may not be
detected right away, o r not detected at
all .
- Reflective surfaces such as guard rails or
entrances to t unnels may impair the
function of the radar sensor .
(D Note
The sensor can be disp laced by impacts or
damage to the bumper, whee l housing and
underbody . The pre sense front sensor can
be damaged by this . Have an authorized
Aud i dea ler or a uthori zed Audi Service Fa­
cility check their function.
(D} Tips
- You can cance l the braking with increas­
ing fo rce that is initiated by the system
by braking yo urself, by accelerating no­
ticeab ly or by swerving.
- For information on dr iver messages
about pre sense, refer to<=> page 97.
- Keep in mind that pre sense front can brake unexpectedly . Always secure any
cargo or objects that you are transport­
i ng to reduce the risk of damage o r in­
Jury .
- Certain pre sense front funct ions switch
off when ESC is sw itched off (sport
mode) or when driving in reverse .
Audi pre sense 97
- T he p re sense front functions are not
available if there is a ma lfunction in the
adaptive cru ise cont ro l* system
¢ page
93 or ¢page 97.
- Keep i n mind t hat pre sense front can
brake abruptly. Always secure cargo or
objects that you transport to reduce the
r isk of damage or injury.
Settings in the Infotainment system
App lies to vehicles: with Aud i pre sense front or Aud i
adapt ive cruise control
.. Select in the MMI: I MENU I button > Ca r >
S y stems *
control button > Dri ver assistance
> Audi pre sense .
Switching the syst em on and off
Audi pre sense (System ): If the system is
switched off, it switches on again automati­
ca lly once the ign ition is switched on aga in.
S ys tem -Switch Audi pre sense on-off. W ith
this, yo u can switch the p rewarning and the
braking intervention from Audi pre sense on
or off .
Prewarning -The distance and approach
warnings can b e switched
on/ off .
(D Tips
-If you res trict or sw itch off the ESC, the
pre sense also sw itches itself off
¢ page
189.
- Switch the pre sense off when you a re
loading the vehicle onto a ve hicle carrier,
train, ship o r other type of transporta­
tion. This can prevent undesired warn­
ings from the pre sense system.
Driver messages
Applies to vehicles: with Aud i pre sense or Aud i adapt ive
cruise control
Audi pre sen se curr entl y un av a ilabl e. No se n­
so r vis ion
T h is message appears if the senso r view is ob­
structed, for exam ple by leaves, snow, heavy
spray or d irt. Clean the sensor¢ page
87,
rg .84 . ~
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Care and cleanin g 205
& WARNING
- Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operato r to reduce the risk
of accidents.
- To reduce the risk of cuts, protect your­
self from sharp metal components when
wash ing the underbody or the inside of
the whee l housings.
- After washing the vehicle, the braking ef­
fect may be delayed due to mo isture on
the brake rotors or ice in the winter . The
brakes must be dried first with a few
careful brake applicat io ns.
{[) Note
- If you wash th e vehicle in an automatic
ca r wash, yo u m ust fold the exterior m ir­
ro rs in to reduce the r isk of damage to
the mirrors . Power foldi ng exterior m ir­
r o rs* must o nly be folded in and out us­
i ng the power folding function.
- To prevent pa int damage, do not wash
th e veh icle in direc t sun ligh t. -
To reduce the r is k of damage, do no t
wash the powe r top with a pressure
washer.
- To reduce the r is k of damage to the sur­
face, do not use i nsect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted vehicle compo­
nents:
- To reduce the risk of damage to the
surfac e, do not use polishi ng agents or
ha rd wax.
- Neve r use prot ective wax. It can de­
stroy the matte fin is h effect.
- Do not place any stickers o r magnet ic
signs on vehicle parts painted w it h
ma tte fi nish pa in t. The pa int cou ld be
da maged whe n the stickers o r m ag nets
ar e removed.
@ For the sake of the environment
Only wash t he ve hicl e in facili ties spe cially
d es igned for th at p urpose . Th is will re duce
the r is k of d irty wate r contam ina ted with
oil from entering t he sewer system.
Cleaning and care information
When clea ning and caring for individua l vehi­
cle components, refe r to the fo llow ing tab les .
The informa tion contained there is s imp ly rec­
ommendations. Fo r quest ions or for compo -n
ents that are not listed , refer to an author­
i z ed Audi dea ler. Also follow the info rma tion
fo und in ~ &, .
Exterior cleaning
Component Situation Solution
Wind shield wip-
Deposits ¢ page 54, Cleaning windshield wiper blades
er bl ade s
Headlights /
Deposits Soft sponge with a m ild soap solution3>
Tail lights
Sensors /
Deposits Sensors: soft cloth w ith a so lvent-free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning
so lution
Snow/ ice Hand brush/so
lve nt-free de -icing spray
Wheels Road sa lt Water
Brake dust Acid
-free special cleaning so lu tion
E x haust tail Road sa lt Water, cleaning solut ion suitable for stainless steel, if
pipes necessary •
•
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2 70 Fuses and bulbs
Interior fuse assignment
No. Equipment Ampere
Fl 3 Adaptive dampers contro
l
20
module
Fl4 Climate
control system
30
blower
Fl S E
lectronic steering column
10
lock
Fl6 MM I area 7.5
Fl7 Instrument cluster 5
Fl8 Rearview camera
7.5
F l9 Convince key
system control
7.5
module, tank system
F20 Tank system
7.5
F23 E
xterior lighti ng, heated
40
washe r fl ui d nozzles
Panorama sunroof/ power
F24 top control module, power 20/30
Fig. 192 Vehicle inter ior : fuse assignment top latch (Cabriolet)
No. Equipment Ampere
F25 Door/dr
iver's side doors (for
30
example power windows)
Fl Engine components 30 F26 Seat heat
ing 30
F2 Seat adjustment 10 F27
Sound-amplif
ier
30
F3 Hydraulic pump
cover (Cab-
40
riolet) F28
Power top control module,
5
elect ro ni cs (Cabr io let)
F4 M
M co ntrols, M MI-compo-
7.5
nents F29
Inte
rior lights
7.5
F3 1 E xterior lighting
40
F5 Gateway
5
F32 Driver ass istance systems 7.5
F 6 Anti-theft a
larm system
s F33 Airbag 5
Climate/heating control, se-
Button illumination, coils
lector lever (automatic
for upper cab in heating relay
F7 transmission), park ing heat- 10
er, rear window heater re lay F34 (Cabriolet) and socket relay,
7.5
in ter ior sound, back-up light
coil switch, temperature sensor,
Diagnosis, electrical parking oil level sensor
F 8 brake
switch, light switch,
10
rain/ light sensor, interior
light ing Diagnosis, headlight range
F35 co
ntrol system, a ir quality
10
sensor, a utomat ic dimming
F9 Steering column
switch
1
module
Fl0 D isp lay 5 rearview mir
ror
F36 Right
corner ing light/ right
15
LED-headlight
Fll Reversible driver's
side safe-
25
ty belt tensioners F37
Left corner
ing light/ left
15
L E D- headlight
Fl 2 M MI area 15/20

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No. Equipment Ampere
Door/front passenger's side
F39 doors (for examp le, power
30
windows)
F40 Sockets 20
F41 Reversible front
passenger's
25
side safety belt tensioners
F42 Central locking components,
40
windshield washer system
F43 Headlights, light ing 30
F44 all wheel drive
15
F49 Starte
r, clutch sensor, head-
5
light re lay coil
FS3 Rear window defogger 30
The power seats* are protected v ia
ci rc uit
b reaker s
that automatically sw itch on after a
few seconds after the overload has been re­
duced.
(D Tips
Note that the following table was accurate
at the time of print ing and is subject to
change.
Left engine compartment fuse
assignment
F ig. 193 Engine compartme nt: fuse assignment
No.
Fl
F2
F3
F4
F5
F6
F7
F8
F9
FlO
F ll
F12
Fl3
FlS
F l 6
F l 7
Fl8
F19
F20
F22
F23
F24
F3 1
F32
Fu se s and bulb s 2 71
Equipment Ampere
E5C contro l modu le 40
ESC contro l modu le 40
Engine control module (gas-
15/30
oli ne/d iesel)
Engine cooling, eng ine com-
ponents, auxiliary heater 5/10
coi l relay (1+2), secondary
air injection pump relay
Engine components, tank 7.5/10/
system 15
Brake light sensor 5
Engine components, wa ter 7.5/10/
pumps 15
Oxygen sensor
10/15
Engine compone nts, ex-
haust door, glow time con- 5/10/20
tro l module, SU LEV valve
Fuel injectors, fuel control
15/20
module
Auxiliary heater heating ele- 40
ment 2
Auxilia ry heater heat ing ele-
40
ment 3
Automat ic transmiss ion con-
15/30
t ro l module
Horn 15
Ignit ion coil 5/20
ESC contro l module, engine
7.5
control module
T ermina l 30 (reference volt-
5
age)
Windsh ie ld wipers
30
Horn 10
Termina l 50 diagnosis
5
Starter 30
Auxilia ry heater heat ing ele-
40
ment 1
Vacuum pump 15
L E D head lights 5