2014 AUDI A5 CABRIOLET brake sensor

14 Instruments and warning/indicator lights
Ignit ion loc k
¢ page 18
USA models:
Speed warning sys tem
¢ page 81
Canada models:
Speed warning system
¢ page 81
Adaptive cruise contro l./
¢ page 95
Yellow indicator lights
Yellow symbols indicate a priority 2 ma lf u nc­
tion -Warning!
Power top ope rat ion
¢ page43
E lectronic Stab ilizat io n Cont rol
( E SC) ./
¢ page 18
E lectronic Stab ilizat ion Contro l
(ESC) ./
¢ page 18
E lectronic S tabiliz atio n Con trol
( E SC)
¢ page 179
USA models:
Anti-lock b raking system (A BS)
d efec tive ./
¢page 19
Canada models:
Anti-lock b raking system (ABS)
d efective ./
¢ page 19
USA models:
Safety systems ./
¢ page20
Canada models:
Safe ty sys tems ./
¢ page20
Worn brake pads
¢ page 20
E lectromechanical parking brake
¢ page
79
TPMS
Tir e pressur e monitori ng
sys tem ./
¢ page241
T ire pressure monitori ng system
¢ page 241
Ele ct ron ic powe r co ntrol ./
¢page20
Ma lf u n ct ion i nd ica tor Lam p
(M IL) ./
¢ page2 0
E ng ine speed limi tat ion
¢ page2 1
Eng ine oil level
¢page 17
E ng ine oil sensor
¢page21
Batte ry
¢ page 17
Tan k system
¢ page 21
Warm u p en gin e*
~ pa ge 202
Win dshield washe r flui d leve l
¢page 21
Win dshield wipe rs
¢ page 21
Remot e control key
¢ page
77
Batte ry in remote contro l key
¢page33
Defective light b ulb warn ing
¢page21
F og lig hts
¢ page 21
R ear fog ligh t(s) *
¢ page21
H ead ligh t range con trol *
¢ page22
A da ptive lig ht*
¢ page22
L ight-/ra in sensor*
¢ page 22

Audi adaptive cruise control and braking guard 93
Audi adaptive cruise
control and braking
guard
Introduction
App lies to vehicles: with Audi adaptive cruise co ntrol
The adaptive cruise control system assists the
driver by regu lating vehicle speed and helping
to maintain a set distance to the vehicle
ahead, within the limits of the system . If the
system detects a moving vehicle up ahead,
adaptive cruise control can brake and then ac­
celerate your vehicle . This he lps to make driv­
ing more comfortable on long highway
stretches.
The braking guard system can warn you about
an impending collision and initiate braking
maneuvers ¢
page 99.
Adaptive cruise control and braking guard
have technical limitations that you must
know, so please read this section carefully, un­
derstand how the system works and use them properly at all times.
General information
General information
Applies to vehicles: with Audi adaptive cruise control
Fig. 103 Front of the vehicle: Position of radar sensor
The area that contains the radar sensor
¢
fig. 103 must never be covered by stickers
or other objects or obstructed with dirt, in­
sects, snow or ice that will interfere with the
adaptive cruise control system and braking
guard. For information on cleaning, refer to
¢
page 195. The same applies for any modifi­
cations made in the front area . The
function of the adaptive cruise control
system and braking guard is limited under
some cond itions:
- Objects can only be detected when they are
within sensor range
.:!>page 95, fig. 106.
-The system has a limited ability to detect
objects that are a short distance ahead, off
to the side of your vehicle or moving into
your lane.
- Some kinds of vehicles are hard to detect;
for examp le motorcycles, vehicles with high
ground clearance or overhanging loads may
be detected when it is too late or they may
not be detected at all.
- When driving through curves¢
page 94.
-Stationary objects¢ page 94.
A WARNING
-Always pay attention to traffic when adap-
tive cruise control is switched on and brak­ ing guard is active. As the dr iver, you are
still respons ible for start ing and for main­
tain ing speed and distance to other ob­
jects. Braking guard is used to assist you .
The driver must always take action to avoid
a col lision. The driver is always responsible
for braking at the correct time.
- Im proper use of adaptive cruise con trol
can cause collisions, other accidents and
serious personal inj ury .
- Never let the comfort and convenience
that adaptive cruise control and braking
guard offer distract you from the need to
be alert to traffic conditio ns and the
need to remain in full control of your ve­
hicle at all times,
- Always remember that the adaptive
cru ise control and brak ing guard have
limits -they will not slow the vehicle
down or maintain the set distance when
you drive towards an obstacle or some­
thing on or near the road that is not
moving, such as vehicles stopped in a
traffic jam, a stalled or disabled vehicle.
If registered by the radar sensor, vehicles
or obstacles that are not moving can
trigger a collision warning and if .,.

94 Audi adaptive cruise control and braking guard
confirmed by the video camera, an acute
collision warning.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplaning). Using the system under
these conditions could result in a colli­
sion.
- Switch adaptive cruise control off tempo­
rarily when driving in turning lanes, on
expressway exits or in construction
zones. This prevents the vehicle from ac­
celerating to the set speed when in these
situations.
- The adaptive cruise control system will
not brake by itself if you put your foot on
the accelerator pedal. Doing so can over­
ride the speed and distance regulation.
- When approaching stationary objects
such as stopped traffic, adaptive cruise
control will not respond and braking
guard will have limited function.
- The adaptive cruise control system and
braking guard do not react to people, an­
imals, objects crossing the road or on­
coming objects .
- The function of the radar sensor can be
affected by reflective objects such as
guard rails, the entrance to a tunnel,
heavy rain or ice.
- Never follow a vehicle so closely that you cannot stop your vehicle safely. 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 cannot bring the vehicle to a sudden or emergency stop under these
conditions.
- To prevent unintended operation, always
switch ACC off when it is not being used.
{[) Note
The sensor can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. That could affect the adaptive cruise control system and braking guard.
Have your authorized Audi dealer or au­
thorized Audi Service Facility check their
function.
, In curves
Applies to vehicles: wit h Aud i adapt ive cr uise contro l
Fig. 104 Example: driv ing into a curve
When driving into a curve <=> fig. 104 and out
of a curve, the adaptive cruise control may re­ act to a vehicle in the next lane and apply the
brakes. You can override or prevent the brak­
ing by pressing the accelerator pedal briefly.
Stationary objects
Applies to vehicles: with Aud i adaptive crui se contro l
Fig. 105 Example: object changing lanes a nd station ­
a ry object
The adaptive cruise control system only reacts
to objects that are moving or that the system
has already detected as moving. For example,
if a vehicle @, which has already been detect­
ed by the adaptive cruise control, turns or
changes lanes and another stationary vehicle
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.

Audi adaptive cruise control and braking guard 99
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 113 Instrument cluste r: approac h warn ing
Braking guard uses a radar sensor. It also
functions within the limits of the system
when adaptive cruise control is switched off.
What can Audi braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes sud­
denly or if your own vehicle is traveling at a high speed and approaching a vehicle up
ahead that is moving more slowly . Braking
gua rd does not react if it cannot detect the
situation .
The system advises you of various situations:
- The distance warning is given if you are too
close to the vehicle ahead for a long time. If
the vehicle ahead brakes sharply, you wi ll
not be able to avoid a collis ion. The indicator
light. in the display comes on .
- The approach warning is given when a de­
tected vehicle up ahead in your lane is mov­
ing much more slowly than you are or if it
brakes sharply . When th is warning is given,
it may only be possible to avoid a collision
by swerving or braking sharply. Th e indicator
light. and indicator in the display will
warn you about the danger
c::> fig. 113. You
will a lso hear an acoustic signa l.
If you do not react fast enough or do not react
at all to the situation, Braking guard will in-
ll This is not ava ilable in som e coun tri es.
tervene by braking and the message braking
guard intervention will appear.
- If a coll ision is imminent , the system will
first provide an acute warning by briefly and
sharply applying the brakes.
- If you do not react to the acute warning,
braking guard can brake within the lim its of
the system. This reduces the vehicle speed
in the event of a collision.
- At speeds unde r 20 mph (30 km/h), the sys­
tem can initiate a comp lete deceleration
shortly before a collision
ll.
- If the braking guard senses that you are not
braking hard enough when a collision is im­
minent, it can increase the braking force .
Which functions can be controlled?
You can switch braking guard and the dis­
tance/approach warning on or off in the radio
or M MI
c::> page 100, Settings in the radio/
MMI.
A WARNING
-Lack of attention can cause collisions, oth-
er accidents and serious personal injuries.
The braking guard is an assist system and
cannot prevent a collision by itself. The
driver must always intervene. The dr iver is
always respons ible for braking at the cor­
r ect time .
- Always pay close attention to traffic,
even when the braking guard is switched
on . Be ready to intervene and be ready to
take comp lete control whenever necessa­
ry. Always keep the safe and legal dis­
tance between your vehicle and vehicles up ahead.
- Braking guard works within limits and
will not respond outside the system lim­
its, for examp le when approaching a
stopped vehicle or stationary obstacle (end of a traffic jam or vehicle that has
broken down in traffic).

100 Audi adaptive cruise control and bra king guard
- Always remember t hat t he radar sens or
fo r the braking guard wo rks only within
defined detection and range limits that
may preve nt the proper detection of oth­
er v eh icles.
- The radar senso r's fu nction and range
can be reduced by rain, s now a nd heavy
spray. Mo ving v ehicl es u p ahead may not
b e promptly det ecte d or may not be de­
te cte d at al l.
- Reflective surfaces in cl udi ng c ras h barri­
ers or tu nnel ent ran ces may impair the
f unc tion of the r ad ar sen sor.
(D Tips
- You can cance l th e braking tha t is initiat­
ed by the system by braking yours elf, by
a cce lerati ng noticeab ly o r by swerving.
- Brak ing guard er ror m essages
¢pag e 100.
- Keep in mi nd that braking gua rd can
brake u nexpect edly . Always secure any
ca rgo or objects that you are tr ansport­
i ng to reduce the risk of d amage or in ­
ju ry.
Settings in the radio/MM!
Appl ies to vehicles: with Audi adaptive cruise control
• Se lect : ICAR !f u nct ion button> Car sy stem s*
control button > Driver assist > Audi brak·
ing guard .
Or
• Se lect : I CAR ! funct io n button >
Audi braking
guard .
System -
Switch Aud i bra king guard On and
Off . When you switc h the ignition on, the
message
Aud i braking guard off appea rs if
the system is sw itched off.
Early warning -The d istance and approach
warn ings in the display can be switched
On /
Off .
(D Tips
-Your settings are automatica lly sto red
and ass igned to the remote control key
being used at the t imes t he settings are
made.
- If you res tric t or sw itch o ff the E SC, the
bra kin g gua rd also switches itse lf off
r=) page 181.
-Switch braking guar d off when you a re
loading the vehicle onto a ve hicle car rier,
train, ship o r other type of t ransporta­
tion. This can prevent undesired warn­ ings from the braking gua rd system .
Messages
Applies to vehicles: wit h Aud i adapt ive c ruise contro l
Braking guard : Off
T his dr iver message a ppears if t he system is
tu rned off via the radio/M M!* . Otherw ise, if
the system is turned off, the in formation ap­
pears every t ime sho rtly after the start of the
trip .
T he driver message a lso appea rs if the system
is not avai lable d ue to a malfunct ion or if the
ESC is not switched on¢
page 181. If this is
t h e case , the system w ill not prov ide warnings
about a poss ible collision.
Braking guard : Activated
T his dr iver mess age a ppears if shar p brake
p ressure was applie d due to a n acute warning.
•••
Three white dots appea r if a sett ing cannot be
selected w ith the operating lev er. For exam­
ple, this happens if you want to raise/lower
t h e speed even thoug h there was no prev ious ­
l y saved speed.
ACC: Sensor blocked
Th is message appears if the senso r view is ob­
structed, for examp le by leaves, snow, heavy
spray or d irt. Clean the sensor¢
page 93,
fig. 103.
ACC: not available
The driver message appears if there is a mal ­
funct ion . The adaptive cru ise cont ro l turns off .
A chime sounds as a reminder . Have the sys ­
tem chec ked by an authori zed Aud i dea le r or
authorized Aud i Service Fac ility.
ACC: unavailable ll-

Homelink
Universal remote
control
Description
Applies to vehicles: with Home link
The HomeLink universal remote control can
be programmed with the remote control for
devices that are already present.
With Home Link, you can control devices such
as the garage door, security systems, house
lights , etc. comfortably from the inside of you
vehicle.
Homelink makes it possible for you to rep lace
three different remote controls from dev ices
in your home with one universal remote. Th is
feature works for most garage door and exte­
rior door motor signals. Programming the in­
dividual remote control for your remote con ­
trol takes place near the center of the radiator
grille. There is a control module attached at
this location .
A one-time programming of the sensor must be performed before you are able to use sys­
tems with Homelink. If the system does not activate after performing the one-time pro­
gramming, check whether the system uses a rolling code¢
page 120 for vehicles without
the
MMI*.
& WARNING
-
- Never use the Homelink transmitter
with any garage door opener that does
have not the safety stop and reverse fea­
ture as requ ired by federa l safety stand­
ards. Th is includes any garage door open­
er mode l manufactured before April 1,
1982.
-A garage door opener which cannot de­
tect an object, signaling the door to stop
and reverse does not meet current feder­
al safety standards . Using a garage door
opener without these features increases
risk of serious injury or death.
Homelink 11 7
-For safety reasons never re lease the
parking brake or start the engine while
anyone is standing in front of the vehicle .
- A garage door or an estate gate may
sometimes be set in motion when the
Homelink remote control is being pro­
grammed. If the device is repeatedly ac­
tivated, th is can overstrain motor and
damage its electrical components - an
overheated mo to r i s a fire haza rd!
- To avoid possib le injuries or property
damage, please always make abso lutely
certa in that no persons or objects are lo­
cated in the range of motion of any
equipment being operated.
(0 Tips
- If you would like more information on
Homelink, where to purchase the Home­
Link compat ible products, or would like
to purchase the Home Link Home Light­
ing Package, please call toll-free :
1-800-355-3515.
-For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions ¢
page 267.
-For security reasons, we recommend that
you clear the programmed b uttons be­
fore selling the vehicle.
Operation
App lies to vehicles : with Homeli nk
Fig. 129 H ead li ner: controls
Req uirement: The buttons must be program-
med
c!) page 118 or ¢ page 119. ..,_

196 Vehicle care and cleaning
A WARNING
-Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operator to reduce the risk
of accidents .
- To reduce the risk of cuts, protect your­
self from sharp metal components when
washing the underbody or the inside of
the wheel housings.
- After washing the vehicle, the braking ef­
fect may be delayed due to moisture on
the brake rotors or ice in the winter. The
brakes must be dried first with a few
careful brake applications.
(!;) Note
- If you wash the vehicle in an automatic
car wash, you must fold the exterior mir­
rors in to reduce the risk of damage to
the mirrors. Power folding exterior mir­
rors* must only be folded in and out us­
ing the power folding function.
- To prevent paint damage, do not wash
the vehicle in direct sunlight.
- To reduce the risk of damage, do not wash the power top with a pressure
washer. -
To reduce the risk of damage to the sur­
face, do not use insect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted vehicle compo­
nents:
- To reduce the risk of damage to the
surface, do not use polishing agents or
hard wax.
- Never use car wash cycles that apply
protective wax.
It can destroy the
matte finish effect.
- Do not place any stickers or magnetic
signs on vehicle parts painted with matte finish paint. The paint could be
damaged when the stickers or magnets
are removed.
@ For the sake of the environment
Only wash the vehicle in facilities specially
designed for that purpose. This will reduce
the risk of dirty water contaminated with
oil from entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehi­
cle components, refer to the following tables.
The information contained there is s imply rec­
ommendations . For questions or for compo- nents that are not listed,
refer to an author­
ized Audi dealer or qualified workshop. Also
follow the information found inc:>.& .
Cleaning exterior
Component Situation Solution
Wiper blades
Dirty c:> page 5 7, Cleaning windshield wiper blades
Headlights/ Dirty Soft sponge with a mild soap solutiona>
tail lights
Sensors/
Dirty Sensors: soft cloth with a solvent-free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning
solution
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special cleaning solution
...

Fuses and bulb s 251
No. Con sumer Amps No. Consumer Amps
•
A/C system pressure sensor, Two-door models: rear left
• electromechanical parking window regulator; Four-
brake, Homelink, automatic 11 door models:
rear left door
30
3 dimming interior rear view
5 (window regulator, central
m irror, air quality/outside locking, switch, lighting)
air sensor, Electronic Stab ili-
12 Rain and light sensor
5
zation Control (button)
5 Sound
actuator
5
Fuse panel© (r e d )
6 Headlight
range cont rol/
5/7,5
head light (cornering light)
No. Consumer Amps
3 Lumbar support 10
7 Headlight (corner
ing light) 7,5
4 Dynamic steering 35
Contro l modu les (e lectro-
s Inter ior lighting (Cabriolet)
5
8 mechanical parking brake,
5
shock absorber, quattro
sport), DCDC converter
9 Adaptive cru ise contro l 5 6
W
indshield washer system,
35
h eadlight washe r system
7 Vehicle electrical
system
20
control module 1
10 Shift gate/clutch
sensor
5
1 1 Side ass ist 5
8
Vehicle electr ica l system
30
control module 1
1 2 Headlight range
control,
5
park ing system 9 Left rear window regulator
7,5/20
motor (Cabriolet)/sunroof
13 Airbag 5
14 Rear wiper (allroad) 15 10 Vehicle e
lectrical system
30
control module 1
1 5 Auxi
liary fuse (instrument
10
pane l) 11 R
ight rea r window regulato r
7,5/20
(Cabriolet)/sun shade motor
16 Aux
iliary fuse terminal 15
40
(engine area) 12 Anti-theft
alarm warning
5
system
Fuse p anel @ (brown )
No. Con sumer Amps
2 Brake light sensor 5
3 Fuel
pump
25
4 Clutc h sensor 5
5 Left
seat heating with/w ith-
15/30
out seat vent ilation
6 Electronic Stab
il iz at ion Con-
5
tro l (e lectric)
7 Horn 15
Front left door (window reg-
8 ulator, centra
l locking, mir-
30
ror, switch, lighting)
9 Winds hield wipe r motor 30
1 0 Electronic
Stabilizat ion Con-
25
trol (valves)