2014 AUDI A7 brake sensor

14 Instruments and warning/indicator lights
I
• •
USA models : Safety systems
¢page 19
Canada mod els: Safety systems
¢page 19
Electronic Stabilization Control
(ESC) ./
¢page 19
Electronic Stabilization Control
(ESC) ./
¢page 19
USA models :
Anti-lock braking system (ABS)
defective ./
¢page20
Canada models:
Anti-loc k braking system (ABS)
defective ./
¢page20
Worn brake pads
¢page 21
Electromechanical parking brake
¢page 79
Tire pressure monitoring system
./
¢page261
mffl Tire pressure monitoring system
~ ¢page261
•
•
II
•
Electronic power control./ (alter­
native
to mJ )
¢page21
Glow plug system
(alternative to
[3i )
¢page 21
Malfunction indicator Lamp (MIL)
./
¢page21
Diesel particu late fi lter* clogged
¢ page22
Engine speed limitation
¢page22
Engine oil level
¢page 18
•
•
•
l:J
m
•
•
Engine oil sensor
¢ page 22
Battery
¢page 17
Tank system
¢page 22
Windshie ld washer fluid level
¢page 22
Windshield wipers
¢page 22
Remote control key
¢ page 76
Remote control key
¢page 78
Battery in remote control key
¢page 33
Defective light bulb warni ng
¢page 23
Rear fog light(s)
¢ page 23
Headlight range control
¢page 23
adaptive light*
¢page 23
Light-/rain sensor faulty
¢page 23
Audi active lane assist*
¢page 96
Transmission (tiptronic)
¢page 114
Transmission
- 5 tronic
¢ page 114
Electronic steering column lock
¢page 18
Engine start system
¢page 18

86 Audi adapti ve cruise control and bra king gu ard
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 lat ing 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 helps to make driv­
ing more comfortable both on long highway
stretches and in stop-and-go traffic.
The braking guard system can warn you about
an impending collision and initiate braking
maneuvers
c:::> page 92.
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. 87 Front of th e veh icle: senso rs and video camera
The areas that conta in the radar and ultrason­
ic sensors and the v ideo camera
c:::> fig. 87
must neve r be cove red by stic kers or other ob­
jects or obstructed w ith dirt, insects, snow or
i ce that will interfere with the adaptive cruise
control system and braking guard. For infor­
mation on cleaning, refer to
c:::> page 213. The same applies for any modifications made in
the front area.
T he function of the adaptive cru ise contro l
system and braking guard is limited under
some cond itions:
- Objects can only be de tected when they are
w ith in sensor range
c:::> page 88, fig. 90.
- The system has a limited ability to detect
objects that are a short d istance ahead, off
to the side of your vehi cle or mov ing into
your lane.
- Some kinds of ve hicles are hard to detect;
for examp le motorcycles, veh icles 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
c!,>page 87 .
-Stat ionary objec ts c:::> page 87.
& WARNING
A lways pay attention to traffic when adap ­
tive cruise contro l is switched on and brak­
ing g uard is active. As the dr iver, you are
still respons ible for starting and for main­
taining speed and distance to other ob­
jects. Braking guard is used to assist you .
The dr iver must a lways take action to avo id
a collis ion . The driver is a lways respons ible
fo r braking a t the co rrec t time.
- Imp roper use of adaptive cru ise control
can cause collisions, other acc idents and
serious pe rsonal in jury.
- Never let the comfort and convenience
that adaptive cruise control and braking gua rd offer d istract you from the need to
be alert to traffic condit ions and the
need to rema in in fu ll control of your ve­
h icle at a ll times,
- Always remember that the adaptive
cruise control and braking guard have
limits -they will not s low 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 o r disabled vehicle.
I f registered by the radar sensors,

Audi adapt ive crui se c ontrol an d bra kin g guard 8 7
vehicles or obstacles that are not moving
can trigger a collision warning and if con­
firmed by the video camera, an acute col­ lis ion warn ing.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condit ion and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplan ing). Using the system under
these cond itions cou ld result in a co lli ­
sion .
- Switch adaptive c ruise control off tempo­
rar ily when driv ing 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 adapt ive cru ise control system w ill
not brake by itse lf 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 w ill have limited function.
- The adapt ive cruise control system and
braking guard do not react to people , an­
ima ls, objects crossing the road o r on­
coming objects .
- The function of the radar sensors can be
affected by reflective objects such as
guard ra ils, the entra nce to a tunnel,
he avy rain or i ce.
- Never follow a veh icle so closely that you
cannot stop your vehicle safe ly. The
adaptive cruise cont ro l c anno t slow or
brake the veh icle safely when you follow
another vehicle too closely. Always re­
member that the automatic braking
funct ion cannot 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 sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. That cou ld affect the adaptive
cruise control system and brak ing guard .
Have your authorized Aud i dea le r or a u­
thorized Audi Serv ice Facility check their
funct ion.
In curves
Applies to vehicles: with Audi adaptive cruise control
I
F ig. 88 Ex ampl e: dri vin g in to a curve
When dr iving into a curve c:> fig. 88 and out of
a cu rve, the ad aptive cruise con trol m ay react
to a vehicle in the next lane and apply the
brakes . You can override or prevent the brak­
i ng by pressing the accelerator pedal b riefly.
Stationary objects
Applies to vehicles: with Audi adaptive cruise control
Fig. 89 Ex ampl e: object chang ing l anes and s ta tio nar y
objec t
The adaptive cru ise con tro l system only reacts
to objects that a re mov ing o r th at the system
has a lready detected as moving . For examp le,
if a veh icle @, which has a lready been detect-
ed by the adaptive c ruise contro l, tu rns o r
changes lane s and another stationary vehicle .,._

92 Audi adaptive cruise control and braking guard
Audi braking guard
Descript ion
Applies to vehicles: with Audi adaptive cruise control
Fig. 97 Instrument cluster: approach warn ing
Braking guard uses radar sensors and a video
camera . It also functions within the limits of
the system when adapt ive cruise control is
switched off .
What can 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 . Brak ing
guard 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 will not be able to avoid a collision . The indicator
light
I in the display comes on .
- The
approach warning is given when a de­
tected veh icle up ahead in your lane is mov ­
i ng much more slowly than you are or if it
brakes sharply . When this warning is given,
it may only be possible to avoid a collision
by swerving or braking sharply. Th e indicator
light
I and indicato r in the display will warn
you about the danger¢
fig. 97. You will a lso
hear an acoustic signal.
ll This is not ava ilable in some co un tri es .
If you do not react fast enough or do not react
at all to the situation, braking guard will inter·
vene by braking.
- If a coll is ion 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 g uard can brake wit h increas ing
force w ith in the limits of the system . This
reduces the vehicle speed in the event of a
collision.
- The system can initiate maximum braking
short ly before a collision
1l . Full deceleration
at high speeds occurs only in vehicles with
adapt ive cruise control and side assist (pre
sense plus).
- If the braking guard senses that you are not
braking hard enough when a collision is im·
m inent, it can increase the braking force.
- The pre sense functions also engage when a
collision is imminent¢
page 194.
Which functions can be controlled?
You can switch braking guard and the dis­
tance/approach warning on or off in the MMI
¢ page 93, Settings in the 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 driver is
always respons ible for braking at the cor­
rect time.
- Always pay close att ent ion 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 example when approaching a ..,.

Audi adaptive cru ise control and brakin g guar d 93
stopped vehicle or stationary obstacle
(end of a traff ic jam or veh icle that has
broken down in traffic).
- Always remember that the radar sensor
for the braking guard 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 dete cted or may not be de­
tected at all.
- Reflective surfaces in cl ud ing crash barr i­
ers or tunnel ent rances may impai r the
f unc tion of the radar sensor.
(D Tips
- You can ca nce l the braking w ith increas­
i ng force that is initiated by the system
by b raking yo urself, by accelerating no­
tice ably or by swerving.
- Bra king guard error messages
¢ page 93.
- Keep in m ind that braking guard can
brake unexpec tedly . Always secure a ny
c ar go or objec ts th at you are transpor t­
i ng to reduce the risk of damage o r in­
ju ry.
Settings in the MMI
App lies to vehicles: with Audi adaptive cruise co ntrol
... Se lect: I CAR I function button > (Car )* sy s­
tems
contro l button > Dri ve r assist > Audi
braking guard .
System -
Switch braking g uard On and Off .
When you sw itch the ignition on, the message
Audi b raking guard off appears if the system
is switched off.
Early warning -The d istance and approach
warn ings in the disp lay can be switched
On /
Off .
@ Tips
- Your settings are automatica lly stored
and ass igned to the remote control key being used at the time the settings
are
made .
-If you res trict the E SC, the braking gua rd
also sw itches itself off¢
page 198 .
-Swi tch braking guard off when you a re
loading the vehicle onto a veh icle ca rrier,
t rain, ship o r other type of t ransporta­
t ion . This can prevent undesired warn­
ings from the braking guard system.
Messages
App lies to vehicles: wi th Audi ada ptive c ruise con tro l
Braking guard : off
T his dr iver message appears if the system is
turned off via the info tainment . Othe rwise , if
the system is turned off, the information ap ­
pears every time shortly after the start of the
trip.
T he driver message a lso appears if the system
is not ava ilable d ue to a malfunct ion or if the
ESC is not switched on¢
page 198 . If this is
the case, the system w ill not prov ide warnings
a bout a poss ible collision.
Braking guard : activated
T h is dr iver message appears if sharp b rake
pressure was applie d due to an acu te warning.
ACC: Unavailable!
ACC and Audi braking guard: not a vailable
The system cannot detect mov ing vehicles up
ahead correctly and is switched off . The sen­
sors have been displaced or are not working proper ly. The Audi pre sense functions may al­
so be affected . Drive to your authorized Aud i
dealer or author ized Audi serv ice facility im­
med iate ly to have the malfunction cor rected .
ACC: currently unavailable. No senso r vis ion
ACC and b rak ing guide: cu rrentl y una va ila­
ble . No sensor visio n
This mess age appears if the senso r view is ob­
structed, for examp le by leaves, snow, heavy
spray or dirt. Clean the sensors
i=:> page 86,
rg .81 . ~

128 Homelink
Homelink
Universal remote
control
General information
Applies to vehicles: with Homelink u nive rsal remote con­
tro l
The HomeLink universal remote control can
be programmed with hand-held transmitters
from existing equipment.
With Homelink, 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 replace
three different remote controls from devices in your home with one universal remote . Th is
feature works for most garage door and exte­
rior door motor signals. Programming the in­
d iv idual remo te control fo r your remote con ­
trol takes p lace near the center of the radiator
grille. There is a control module attached at
this location .
A one-t ime programm ing of the sensor mus t
be performed before you are able to use sys­
tems w ith Homelink.
A 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 federal safety stand­
ards. Th is 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 . Us ing a garage doo r
opener witho ut these fea tures increases
risk of serious injury or death.
- 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, this can overstrain motor and
damage its electrical components -an
overheated motor is a fire hazard!
- To avo id possible injuries or property
damage, please always make absolutely
certa in that no persons or objects are lo­
cated in the range of motion of any
equ ipment being operated.
(0 Tips
- If you would like additional information
on the Homelink Un iversal Transceiver,
Homelink compatible products, or to
purchase other accessories su ch as the
Homelink Lighting Package, please con­
tact Homelink at 1 -800-355-3515 or on
the Internet at www.homelink.com.
- For Declara tion of Comp liance to United
States FCC and Ind ustry Canada reg ula ­
tions¢
page 288 .
-For security reasons, we recommend that
you clear the programmed b uttons be­
fore selling the ve hicle .
Operation
Appl ies to vehicles: wit h Ho melink
Fig . 14 6 Headliner: controls
M 0
9 (!)
~
Requirement: The buttons must be program­
med ¢
page 129 .
"'To open the garage door , press the program­
med b utton . The LED @ will light up o r
flash.
"' To close the garage door, press the button
again .
Ill>

214 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 r isk of cuts, p rotect your­
self from shar p meta l compone nts w hen
was hing t he unde rbody or the ins ide of
the whee l housings.
- Aft er washing the vehicle, the braking ef­
fec t may be de layed due to mo isture o n
the b rake ro to rs or i ce in the winter. The
brakes must be dried first with a few
careful brake applications.
(!;) Note
- If you wash t he vehi cle in a n automati c
car wash, yo u m ust fold the exterior m ir­
ro rs in to reduce the r is k of damage to
the mirrors. Power folding exte rior m ir ­
ro rs * must only be folded in and out us­
i ng the power folding function.
- To prevent pa int damage, do not wash
t h e ve hicle in direct sun light . -
To reduce the ris k of damage to the sur ­
face, do not use insect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted veh icle compo­
nents:
- To reduce the risk of damage to the
surface, do not use polishi ng agen ts or
h a rd wax.
- Neve r use car wash cycles that apply
p rotective wax .
It can destroy the
matte fi nish effect.
- Do not plac e any stickers o r magnet ic
signs on vehicle parts pain ted w ith
matte fi nish paint. The paint cou ld be
d am aged when the stickers o r m ag nets
a re removed.
@ For the sake of the env ironment
O nly wash the ve hicl e in facili tie s sp e ci al ly
d esigne d for tha t purpose. This will re duce
the r is k of dirty wate r contam ina ted with
o il from entering the sewer system.
Cleaning and care information
When clea ning and cari ng for individua l vehi ­
cle components, refer to the following tab le .
The information contained there is simp ly rec­
ommendations. For quest ions or for compo- nents that are not listed, refer to an author­
ized Audi dea
ler or a qualified workshop . Also
fo llow the information found in c> ,& .
Cleaning exterior
Component Situation Solution
Wiper blades
Dirty <=> page 49, Cleaning windshield wiper blades
Headlights/ D irty Soft sponge wi
th a m ild soap so lutiona l
tail lights
Sensors /
Dirty Sensors: soft cloth w ith a so lvent-free cleaning product
camera lense s Camera lenses: soft cloth with an alcohol-free cleaning
so lution
Snow/ice Hand brush/so lvent-free de-icing spray
Wheels Road sa lt Water
Brake d ust Acid-free special cleaning solution
Exhaust tail Road s alt Water, deani ng sol ution suit able for stainless s teel, if
pipes necessary

No. Equ ipment Amps
4 Suspension control system sen-s sor
s
E
lectronic Stabilization Cont rol
s (ESC) module
6 Climate control
s
7 Adaptive cruise control
10
8
Airbag control module, front
s passenger's seat sensor system
9 Gateway
s
Homelink (garage door opener),
10 night vis ion system cont ro l
s
module
11 Image
processing (active lane
10
ass ist, adaptive cruise control)
12 Dynamic steering
s
13 Terminal 15 in
the instrument
15
panel
14 Terminal 15
in the luggage com-
partment 30
15 Terminal 15
(engine)
15
16 Starter 40
Fu se pa nel ® (b rown )
No . Equipment Amps
1 Gateway s
2 C
limate control 10
3 E
lectronic Stabili zation Control
10
(ESC) module
4 Fron
t door (driver 's side)
30
s
Power seat adjustment (driver's
7,5
seat)
6 Dynam
ic steering
35
7 Sunroof 20
8
Rear door control module (driv-
15
er 's side)
9 Lumbar support (
Front passen-
s ger seat)
10 Tire pressure
monitoring system
s
11 Su
nroof, rear spoi ler (Sportba ck)
20
12 Driver
door control module
15
Fuse s and bulb s 2 7 3
Fuse pan el© (r e d )
No . Equipment
2 Fuel pump
3 Brake light
sensor/brake pedal
sensor system
AdBlue control module (Diesel)/
4 Engine acoust ics
s Left rear door cont rol modu le
6 Power seat adjustment
(pas-
senge r's seat)
7 Horn
8 Windshield wiper motor
9 Light/rain sensor, heater
for vid-
eo camera in windscreen
10 Lumba r support (driver seat)
11 Front
passenger door control
modu le
12 Right rea r door cont rol modu le
Front passenger side cockpit fuse
assignment Amp
s
25
S/S
S/7,S 30
7,5 15
30
s
s
15
15
F ig . 22 0 Front passenger side cockpit: fuse pa nel w it h
plast ic brac ket
Fuse panel @ (bla ck)
No . Equipment Amps
1 Head-up
Display s
2 MMI Display s
3 CD/DVD changer s
4 MMI unit/drives 7,5
s
Chip card reader (not in all coun-
s tries)
6 Instrument
cluster
s
7 Steering column switch module s ...