2014 AUDI A5 COUPE brake sensor

14 Instruments and warning/indicator lights
Ignit ion loc k
¢ page 18
USA models:
Speed warning sys tem
¢ page 78
Canada models:
Speed warning system
¢page 78
Adaptive cruise cont ro l./
¢ page 93
Yellow indicator lights
Yellow symbols indicate a priority 2 ma lf u nc­
tion -Warning!
Electronic Stab ili zat ion Con trol
( E SC) ./
¢page 18
E lectronic Stab ili zat ion Contro l
(ESC) ./
¢ page 18
E lectronic Stab ilization Con trol
(ESC)
¢ page 180
USA models:
Anti- lock braking sy stem (A BS)
d efec tive ./
¢ page 19
Canada models:
Anti-lock b raking system (ABS)
defe ctive ./
¢page 19
USA models:
Safety systems ./
¢ pag e20
Canada models:
Safety systems ./
¢ page2 0
W orn brake pa ds
¢page 20
E lectromech anical pa rking bra ke
¢ page
76
T ire pressure mon itoring
system./
¢ page 241 T
ir e pressur e monitori ng sys tem
¢ page 241
E lectron ic powe r control ./
¢page20
Ma lf u nction ind icator Lamp
(MIL) ./
¢page20
E ng ine speed limi tat ion
¢page 21
E ng ine oil level
¢ page 17
E ng ine oil senso r
¢ pag e 21
Batte ry
¢ page 17
Ta nk system
¢page21
Warm up eng ine*
¢page202
Windshield washe r fl uid leve l
¢ page 21
Win dshield wipers
¢ page 21
Remote control key
¢page 74
B atte ry in remote cont ro l key
¢ page3 4
Defective light b ulb warn ing
¢ pag e 21
Fog lights
¢page21
Rear fog light(s)*
¢page21
Headlight range cont ro l*
¢page22
Adapt ive lig ht*
¢poge22
L ight -/r ain sensor *
¢ page22
Ada ptive dampe rs*
¢page22

90 Audi adaptive cruise control and braking guard
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 regulating 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
c:::> page 96.
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 co ntrol
Fig. 90 Front of t he veh icle: Posit io n of radar sensor
The area that contains the radar senso r
c:::> fig. 90 must never be covered by stickers or
other objects or obstructed with dirt, insects,
snow or ice that w ill interfere with the adap­
tive cruise control system and braking guard.
F or information on cleaning, refer to
c:::> page 196. The same applies for any modifi­
cations made in the front area. T
he function of the adaptive cruise contro l
system and braking guard is limited under
some condit ions:
- Objects can only be de tected when they are
within sensor range
c:::>page 92, fig . 93.
-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 a ll.
- When driving through curves
c:::> page 91.
-Stat ionary objects c:::> page 91 .
A WARNING
-
Always pay attention to traffic when adap-
tive cruise contro l is switched on and brak­
i ng guard is active. As the driver, you are
still respons ible for starting and for main­
tain ing speed and distance to other ob­
jects. Braking guard is used to assist you.
The dr iver must always take action to avoid
a col lision. The driver is always responsibl e
for braking at the correct time.
- Im proper use of adaptive cruise con trol
can cause collisions, other accidents and
serio us personal injury.
- Never let the comfort and convenience
that adaptive cruise control and braking
guard offer distract you from the need to
be alert to traffic conditions and the
need to remain in full control of your ve­
h icle at all times,
- Always remember that the adaptive
cru ise contro l 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
mov ing, 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 co llision warning and if

Audi adapt ive crui se c ontrol an d bra kin g guard 91
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
hydroplan ing). Using the system under
these conditions cou ld result in a co lli­
sion.
- Switch adaptive cruise control off tempo­ rar ily when driving in turning lanes, on
expressway exits or in cons truction
zones. This prevents the vehicle from ac­ celerating to the set speed when in these
situations.
- The adaptive cr uise control system wi ll
not brake by itse lf if you p ut your foot on
the accelerator pedal. Doing so can over­
ride the speed and distance regulation .
- When approaching stationary objects
such as stopped traff ic, adaptive cruise
control will not respond and braking
guard w ill have limited function.
- The adaptive cruise control system and
braking guard do not react to people, an­
ima ls, 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 ve hicle so closely that you
cannot stop your vehicle safely. The
adaptive cruise cont ro l cannot slow or
brake the veh icle safely when you follow
ano ther veh icle too closely. Alway s re­
member that the automatic braking
function cannot bring the vehicle to a sudden or emergency stop under these
condit ions.
- To prevent unintended operation, always
switch ACC off when it is not being used.
(D Note
The sensor can be disp laced by impacts or
damage to the bumper, whee l housing and
underbody . That could affect the adaptive cruise control system and braking g
uard.
Have your authorized Audi dea ler o r au­
thorized Audi Service Facility chec k their
funct ion.
In curves
App lies to vehicles: with A ud i ada ptive c ruise contro l
F ig . 91 Example: driving into a curve
When driving into a curve <=.> fig. 91 and ou t of
a curve, the adaptive cruise control may react
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
App lies to vehicles: wit h Audi adapt ive cr uise contro l
F ig . 92 Example : objec t changing lanes an d stationary
object
The adaptive cru ise contro l system only reacts
to objects that are mov ing or that the system
has a lready detected as moving. For examp le,
if a ve hicle@ , which has already been detec t­
ed by the adaptive cru ise con trol , turns or
changes lanes and another stationa ry vehicle
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.

96 Audi adaptive cruise control and braking guard
Setting the driving mode for vehicles with
Audi drive select*
Refer to¢ page 105 .
@ Tips
Your settings are automatically stored and
assig ned to the remote contro l key being
used .
Request for driver intervention
Appl ies to vehicles : with Audi adaptive cruise co ntrol
F ig . 99 In st ru m ent cl uster: request for drive r in te rven ­
t io n
In ce rtain situ ations, t he system w il l prompt
you to take action . This cou ld happen, for ex ­
ample, if braking by the adaptive cr uise con ­
trol system is not enough to maintain enough
d ista nce to the vehicle ahead.
The inst rument cluste r will warn you about
the danger ¢
fig. 99:
- A red vehicle is pic tured in t he d is pla y.
- T he text
DISTANCE! appea rs in the st atus
b ar.
- T he red ind icator light . blinks.
- In add itio n, a warning tone sounds .
Audi braking guard
Description
Applies to vehicles: wi th Audi ada ptive cr uise contro l
Fig. 100 In str ume nt clus ter: approach wa rning
Braking guard uses a radar sensor. It a lso
funct ions wit hin the lim its of the system
when adapt ive cruise control is switched off.
What can Audi braking guard do?
When detected in time, the system can assess
s ituations when a vehicle ahea d brakes s ud­
denly o r if your own vehicle is traveling at a
high speed and approach ing a vehicle up
ahead that is moving mo re slowly . Braking
guard does not react if it cannot detec t the
s ituation .
The system advises you of var ious situations:
- The
distance warning is given if yo u are too
close to the vehicle ahead for a long time. If
the vehicle ahead brakes sharp ly , yo u will
not be ab le to avoid a collision . 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 m uch more slowly than yo u are or if it
brakes s harply . When t his war ning is given,
it may o nly be poss ibl e to avo id a co llision
by swe rv in g or b ra ki ng s harp ly. The indica tor
light . and indicator i n the di spl ay will
warn yo u about the danger ¢
fig. 100. You
w ill also hea r an acoustic signal.
If you do not rea ct fas t eno ugh o r do not r eact
at all t o the si tu at ion, B raki ng g uard will in­
tervene by b raking and the message
braking
guard intervention
wi ll appea r.

Audi adaptive cru ise control and brakin g guar d 97
-If a co llision is imminent, the system will
first provide an
acute wa rnin g by briefly and
sharp ly app lying the brakes .
- If you do not react to the ac ute warning,
braking guard can brake within the limits of
the system. This reduces the vehicle speed
in the event of a coll is ion.
- At speeds under 20 mph (30 km/h), the sys­
tem can in it iate a complete decelerat ion
shortly before a collis ion
1>.
- 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 function s can be controll ed?
You can switch braking guard and the dis­
tance/approach warning on or off in the radio
or MM I
¢ page 9 7, Settings in the radio/
MMI.
A WARNING
Lack of attention can cause col lis ions, oth­
er accidents and serious persona l injuries.
The braking guard is an assist system and
cannot prevent a coll is ion by itself. The
driver must always intervene. The d river is
always responsib le for br aking at the cor­
rect time .
- Always pay close attention to traffi c,
even when the bra king g uard is switched
on . Be ready to intervene and be ready to
take complete control whenever necessa­ ry. A lways keep the safe and lega l dis­
tance between your vehicle and vehicles
up ahead.
- Braking guard works w ith in limits and
will not respond outs ide the system lim­
its, for example when approaching a
stopped vehicle or stationary obstacle
(end of a traff ic jam or vehicle that has
broken down in traffic).
- Always remember that the radar sensor
for the braking guard wo rks only within
defined detection and ra nge limits that
1
> T hi s is not ava ilable in some countries .
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 ve hicles up ahead may not
be prompt ly detected or may not be de­
tected at all.
- Reflective surfaces incl uding crash barri­
ers or tunne l entrances may impair the
function of the radar senso r.
(D Tips
- Yo u can cancel the bra king that is in itiat­
ed by the system by braking yourself, by
accelerating not iceably or by swerving.
- Braking guard error messages
¢page 98.
- Keep in mind that braking g uard can
brake unexpected ly. Always secure any
cargo or objects that you a re tra nsport­
ing to reduce the risk of damage or in­
jury .
Settings in the radio/MMI
Applies to veh icles: w it h Audi ada ptive cru ise co ntro l
.,. Sele ct: !CAR ! func tion button> Car sy ste m s*
con trol butto n > Driv er a ssist > Audi brak ­
ing guard .
Or
.,. Select: !CAR ! function button > Audi braking
gua rd.
Sy stem -
Switch A udi braking guard On an d
Off. When you switch the ignit ion on, the
message
Audi braking guard off appears if
the system is switched off.
Early warning -The distance and approach
warnings in the d isplay can be switched
On/
Off.
(D Tips
- Yo ur settings are au tom atically stored
and assigned to the remote cont ro l key
bein g used at the times the settings are
made.

98 Audi adaptive cruise control and braking guard
-If you restrict or switch off the ESC, the
braking guard also switches itself off
r=;,page 182.
-Switch braking guard off when you are
loading the vehicle onto a vehicle carrier,
train, ship or other type of transporta­
tion. This can prevent undesired warn­ ings from the braking guard system.
Messages
Applies to vehicles: with Audi adaptive cruise co ntro l
Braking guard: Off
This driver message appears if the system is
turned off via the radio/MM!*. Otherwise, if
the system is turned off, the information ap­ pears every time shortly after the start of the
trip.
The driver message also appears if the system is not available due to a malfunction or if the
ESC is not switched on
r=;, page 182 . If this is
the case, the system will not provide warnings
about a possible collision.
Braking guard: Activated
This driver message appears if sharp brake
pressure was applied due to an acute warning.
•••
Three white dots appear if a setting cannot be
selected with the operating lever. For exam­
ple, this happens if you want to raise/lower
the speed even though there was no previous­
ly saved speed .
ACC: Deactivation
The driver message appears in vehicles with
manual transmission . If the clutch pedal was
pressed down for too long, the adaptive cruise
control turns off. A chime sounds as a remind­
er .
ACC: Sensor blocked
This message appears if the sensor view is ob­
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor
r=;, page 90,
fig. 90 .
ACC: not available
The driver message appears if there is a mal­
function. The adaptive cruise control turns off.
A chime sounds as a reminder. Have the sys­
tem checked by an authori zed Audi dealer or
authorized Audi Service Facility.
ACC: unavailable
The driver message appears if, for example,
the brake temperature is too high. The adap­
tive cruise control is temporarily unavailable.
A chime sounds as a reminder.
Engine speed!
This driver message appears in vehicles with
manual transmission if the driver had not up­
shifted or downshifted in time while using
adaptive cruise control braking or accelerat­
ing, causing the vehicle to exceed or not reach
the permitted limit speed. The adaptive cruise control turns off. A chime sounds as a remind­
er .
Shift lever position!
Vehicles with an automatic transmission: the
driver message appears if the selector lever is
shifted to the N position. The adaptive cruise
control is not available while in this position.
Vehicles with manual transmission: the driver
message appears for vehicles with manual
transmission if there is no forward gear en­
gaged, meaning if the reverse gear or the 1st
gear is engaged or if the selector lever is in
the neutral position. The adaptive cruise con­
trol is not available while in this position.
Stabilization control (ESC)
This message appears if the electronic stabili­
zation control (ESC) is taking action to stabi­
lize the vehicle. The adaptive cruise control
turns off . A chime sounds as a reminder .
Speed too low
This message appears if the current speed is
too low
to set or to maintain the desired
speed .
The speed being saved must be at least
20 mph (30 km/h). The cruise control is
turned off for speeds lower than 12 mph

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. This
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 coder:!.>
page 118 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. This includes any garage door open­
er model 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 115
- For safety reasons never release 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 tor is a fire hazard!
- 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 buttons be­
fore selling the vehicle.
Operation
App lies to vehicles : with Homeli nk
,~
1~
1 r ·O : O ·) 1111 ~
®
Fig.
116 Headl iner: controls
Req uirement: The buttons must be program-
med
¢page 116 or ¢page 117. ..,_

Vehicl e ca re a nd cl eanin g 197
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 r isk of cuts, protect your­
self from sharp metal components when
wash ing the underbody or the inside of
t he wheel housings.
- After washing the vehicle, the braking ef­
fec t 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 applications.
Q) Note
- If you wash t he vehicle in an automatic
car wash, yo u must fold the exterior m ir­
rors in to reduce the r is k 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 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 fi nish effect.
- Do not place any stickers or magnet ic
signs on vehicle parts painted w ith
matte fi nish paint. The paint cou ld be
damaged when the stickers o r magnets
are removed.
@ For the sake of the environment
Only wash the vehi cle in facilities spec ial ly
designed for that purpose . This will red uce
the risk of dirty water contam inated with
oil from entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehi­
cle components, refer to the fo llow ing tables .
The information contained there is s imply rec­
ommendations. For quest ions or for compo- nents
that are not listed, refer to an author­
ized Audi dea ler or qualified workshop. A lso
fo llow the information found inc>,& .
Cle anin g exter ior
Component Situation Solution
Wiper b lades
Dirty i=> page 5 0, Cleaning windshield wiper blades
Headligh ts / Dirty Soft
sponge with a m ild soap solutional
tail light s
S ensor s/
Dirty Sensors: soft cloth with a solvent-free cleaning product
camera l enses Camera lenses: soft cloth with an alcohol-free cleaning
solution
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road sa lt Water
Brake dust Acid-free special cleaning solution
Exhau st t ail Road sa lt Water, cleaning solut ion suitable for sta inless steel, if
pi pes necessary
•
•