2016 AUDI A8 brake sensor

TPMS
USA models:
Anti-lo ck brak ing system (AB S) de­
fect ive
r=> page 18
Canada models:
Ant i-lock brak ing system (ABS) de­
fect ive
r::!> page 18
Worn bra ke pads
r=> page 19
Electromechanical pa rking brake
r=> page 15
Tire press ure mon itoring system ../
r=>page 254
Tire p ress ure mon itor ing system
r=> page 254
Elect ronic power control (a lterna­
t ive
to ll )
r=> page 19
Glow plug system
(a lterna tive to
lla )
r::!> pag e 20
Malfunct ion indicator Lamp ( MIL)
,I
r=> page 20
Di ese l pa rt ic ulat e filter* clogged
r=> page 20
Eng ine speed limi ta ti on
r::!> page 20
Eng ine o il level
r::!> page 1 7
Engine oi l sensor
r::!> page 21
Request to warm engine by dr iv ing
r=> page 21
Battery
r=> page 15
Tank system
r=> page 21
W indshie ld washer fluid level
r::!> page 21
W indshie ld w ipers
r=> page 21
Instruments and ind icator lights
Ad Blue /9
Ad Blue,/'
Remote contro l key
r::!> page 81
Remote contro l key
r=> page 81
Battery i n remote control key
r=> page 31
Defec tive ligh t bu lb warning
r=> page 21
F og ligh ts*
r=>page 21
Rear fog lights*
r::!> page 21
Head ligh t range cont rol
r=> page 21
adaptive light*
r=> page 2 2
light-/ra in sensor fa ulty
r=> page 2 2
Audi act ive lane assist *
r=>page 100
Transmission
r=> page 116
Transmission
r=> page 11 6
Electro nic s teer ing colum n lo ck
r=>p age 17
Engine sta rt syste m
r=>page 17
Brake booster
r=> pag e 18
Electromechanical steering ,dy­
nam ic steer ing* ../
r=>page 194
Air suspension*
r=>page 17
Sport d ifferential *
r=>page22
Refi ll Ad Blue*
r::!> page 21 6
AdBlue malfunc tion*
r=> page 216
13

Audi adaptive cruise control and braking guard
Audi adaptive cruise
control and braking
guard
Introduction
Applies to: vehicles with Audi adaptive cruise control
The adaptive cruise contro l system assists the
driver by regulating vehicle speed and helping to
maintain a set distance to the veh icle ahead ,
within the limits of the system. If the system de­
tects a moving vehicle up ahead, adaptive cruise
control can brake and then accelerate your vehi­
cle. This helps to make driving 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 maneu­
vers
c::> page 96.
Adaptive cruise control and braking guard have
technical limitations that you must know, so
please read this section carefully, understand
how the system works and use them properly at
all times.
General information
General information
Applies to: veh icles with Audi adaptive cruise control
Fig. 96 Fro nt of the ve hicle: sensors and video camera
The areas that contain the radar and ultrasonic
sensors and the video camera
c::> fig. 96 must nev­
er be covered by stickers or othe r objects or ob­
structed with dirt, insects, snow or ice that will
interfere with the adaptive cruise control system
and braking guard. For information on cleaning,
90
refer to c::> page 206. The same applies for any
modifications made in the front area .
The function of the adaptive cruise control sys­
tem and braking guard is limited under some
conditions:
- Objects can only be detected when they are
w ithin sensor range
c::>page 92, fig. 99.
- Th e system has a limited ability to detect ob­
jects that are a short distance ahead, off to the
side of you r vehicle or moving into your lane .
- Some kinds of vehicles are hard to detect; for
example 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 91.
-Stationary objects c::> page 91.
A WARNING
Always pay attention to traffic when adaptive
cruise control is switched on and braking
guard is active. As the driver, you are still re­
sponsible for starting and for maintaining
speed and distance to other objects. Braking
guard is used to assist you. The driver must
always take act ion to avoid a collision . The
driver is always respons ible for braking at the
correct time.
- Improper use of adaptive cruise control can cause collisions , other accidents and serious
personal injury.
- Never let the comfort and convenience that
adapt ive cru ise control and braking guard
offe r dist ract you from the need to be alert
to traffic conditions and the need to remain
in fu ll contro l of your ve hicle at all times,
- Always remember that the adaptive cruise
control and braking guard have limits -they
will no t slow the vehicle down or maintain
the set distance when you drive towards an
obstacle or something on or near the road
that is not moving, s uch as vehicles stopped
in a traff ic jam, a stalled or disab led vehicle.
If registered by the radar sensors, vehicles
or obstacles that are not moving can trigger
a co llision warning and if confirmed by the
video camera, an acute co llision warning.

Audi ada pti ve c ruise contr ol and br akin g gu ard
-For safety reasons, do not use adapt ive
cruise contro l when driv ing 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) . Us ing the system under these condi­
t ions could result in a collision .
- Switch adaptive cruise contro l off tempora­
rily when driving in turn ing lanes, on ex­
pressway exits or in const ruc tion zones. This
preven ts the vehicle from accelerating to
the set speed when in these situat ions .
- T he adapt ive cr uise con trol system will no t
br ake by i tself if you pu t your foot on the ac­
celerator peda l. Doing so can override the
speed and distance regulation.
- Whe n approaching stat ionary obje cts such
as stopped traffic, adapt ive cruise control
will not respo nd and braking guard will have
limited function .
- The adaptive cruise control system and
brak ing guard do not react to peop le, ani­
ma ls, objects crossing the road or oncom ing
objects.
- The function of the radar sensors can be af­
fected by reflective objects such as guard
rai ls, t he entrance to a tunnel, heavy rain or
ice.
- Never follow a veh icle so closely that you
cannot stop your vehicle safely . The adap­
t ive cr uise control cannot slow or brake the
vehicle safely when you follow another veh i­
cle too close ly. Always remember th at the
au tom atic b raking function ca nnot br ing the
vehicle to a sudden or emergency stop un­
der these conditions .
- T o preven t unintended operation, alw ays
switch AC C off when i t is not be ing used.
(D Note
The sensors can be displaced by impacts o r
damage to the bumper, whee l housing and
underbody. That co uld affect the adaptive
cru ise con trol sys tem and braking guard.
Have your a uthorized Audi dea ler or author·
ized Aud i Service Facility check their function.
In curves
Applies to: vehicles with Audi adapt ive cruise control
F ig. 9 7 Exampl e: d ri ving into a curve
When driving into a curve¢ fig. 97 and out 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 b raking by press ing
the accelerator pedal briefly.
Stationary objects
Applies to: vehicles with Audi adaptive cruise control
Fig. 98 Exa mple : object changing la nes a nd s tatio nary ob ·
j e ct
T he adaptive cruise control system only reacts to
objects that are moving or that the system has
already detected as moving. For example, if ave­
hicle @, which has already been detected by the
adaptive cruise control, turns or changes lanes
and another stat ionary vehicle @ is located in
front of that vehicle, the system will not react to
t h e stationary veh icle.
91

Audi adaptive cruise control and braking guard
Audi braking guard
Description
Applies to: vehicles w ith Aud i adapt ive c ru ise co ntro l
Fig. 106 Instrument cluster : approac h warning
Braking guard uses radar sensors and a video
camera. It also functions within the limits of the
system when adaptive cruise control is switched
off .
What can braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes suddenly
or if your own vehicle is traveling at a high speed
and approaching a vehicle up ahead that is mov­
ing more slowly. Braking guard does not react if
it cannot detect the situat ion.
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 avo id a coll is ion. The indicator light.
in the display comes on.
- The
approach warning is given when a detected
vehicle up ahead in your lane is moving much
more slowly than you are or if it brakes sharply.
When this warning is g iven, it may only be pos­
sible to avo id a collision by swerving or braking
sharp ly. Th e indicator light. and indicator in
the display will warn you about the danger
qfig. 106. You will also hear an acoustic signal.
If you do not react fast enough or do not react at
all to t he situation, braking guard will intervene
by braking and the message
braking guard inter­
vention
will appear.
l) Thi s is not available in some countries.
96
-If a collision is imminent, the system will first
provide an
acute warning by briefly and sharply
app ly ing the brakes.
- If you do not react to the acute warning, brak­
ing guard can brake with increasing force with­
in the limits of the system. This reduces the ve­
hicle speed in the event of a collision.
- The system can initiate maximum braking
shortly before a co llision
1
) . Full deceleration at
high speeds occurs only in vehicles with adap­
tive cruise control and side assist (pre sense
plus) .
- If the braking guard senses that you are not
braking hard enough when a collision is immi­
nent, it can increase the braking force .
- The pre sense functions also engage when a
collision is imminent
qpage 187.
Which functions can be controlled?
You can switch braking guard and the distance/
approach warning on or off in the MMI
¢ page 9 7, Settings in the MMI.
A WARNING
Lack of attention can cause collisions, other
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 respon­
sible for braking at the correct 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 necessary. Al­
ways keep the safe and legal distance be­
tween your vehicle and veh icles up ahead.
- Braking guard works within limits and will
not respond outside the system limits, for
example when approaching a stopped vehi­
cle or stationary obstacle (end of a traffic
jam or vehicle that has broken down in traf­
fic).
- Always remember that the radar sensor for
-
the brak ing guard works only within def ined ..,.

Audi adapt ive cruis e control and braking gua rd
de tect ion and range limits t hat may prevent
the proper detection of other veh icles.
- The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving veh icles up ahead may not be
promptly detected or may not be detected
at all .
- Reflective surfaces including crash barriers
or tunnel entrances may impair the funct ion
of the radar sensor.
(D Tips
- You can cancel the brak ing with increasing
force that is init iated by the system by b rak­
i ng yourself, by accelerat ing noticeab ly or
by swerving .
- Braking guard error messages ¢
page 9 7.
- Keep in mind that braking guard can brake
unexpected ly. Always secure any cargo or
objects that you are transport ing to reduce
the risk of damage or injury .
Settings in the MMI
Appl ies to: ve hicles with Audi a daptive cruise co ntro l
~ Select: I CARI funct ion button > Car s ystem s
control button > Driv er a ssis t > Audi braking
guard .
S ys tem -
Switch braking guard On and Off . When
you swit ch the ig nitio n on, the message
Audi
braking guard off
appe ars if the system is
switche d off.
Early warning -The distance and approach wa rn­
in gs in the display can be sw itc hed
On/ Off.
0) Tips
- Your settings are automatically stored and
ass igned to the remote cont rol key being
used at the time the sett ings a re made.
- If you rest rict the ESC, the bra king guard al­
so switches itse lf off
Q page 192 .
- Switch braking guard off when yo u are load ­
i ng t he ve hicle on to a vehicle ca rr ier, t rain,
s hi p or other type of transportation . This
c a n prevent undesired warnings from the
br aking gua rd system.
Messages
App lies to : vehicles wi th Audi ada ptive c ruise con trol
Braking guard : off
T his dr iver message appears if the system is
tu rned off via t he i nfot ainment. O therwise, if the
system is t urne d off, the information appears ev­
ery time shortly after t he start o f the trip .
T he driver message a lso appea rs if the system is
not avai lab le due to a m alfu nction o r if the ES C i s
not switched on¢
page 192 . If th is is the case,
the sys tem wi ll not provide warnings abou t a
poss ib le collision .
Braking guard : a ctivated
This dr iver message appears if sharp brake pres­
su re was applied due to an acu te warning .
ACC: Unava ilable!
ACC and Audi braking guard: not available
T he system cannot detec t moving vehicles up
ahead co rrectly and is swi tc h ed off. The senso rs
have been displaced or are not working proper ly.
T he Audi pre sense funct ions may also be affect ­
e d. D rive to your authorized A udi deal er or au­
thori zed Audi serv ice facility immediately to have
the malfunction corrected .
ACC: currently unavailable. No senso r vi sion
ACC and braking guide : current ly unavailable .
No s ensor vi sion
Th is message appears if the senso r view is ob­
structed, for examp le by leaves, snow, heavy
spray or dirt. Clean the senso rs
Q page 90 ,
fig. 96.
ACC: Currently unavailable . Gradient too steep
The road exceeds the maximum poss ible angle
for proper adaptive cruise co ntro l operat ion .
Adaptive cruise control is switched off .
ACC: Only available in D, Sor M
Select the D/S or M selector leve r position.
ACC : currently unavailable . Parking brake ap ­
plied
97

& WARNING
-Only wash the vehicle when the ignition is
off and follow the instructions from the car
wash operator to reduce the risk of acci­
dents.
- To reduce the risk of cuts, protect yourself
from sharp metal components when wash­
ing the underbody or the inside of the wheel
housings.
-After washing the vehicle, the braking effect
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 mirrors in
to reduce the risk of damage to the mirrors.
Power folding exterior mirrors* must only
be folded in and out using the power folding
function.
- To prevent paint damage, do not wash the
vehicle in direct sunlight.
-
Care and cleaning
-To reduce the risk of damage to the surface,
do not use insect removing sponges, kitchen
sponges or similar items.
- Matte finish painted vehicle components:
- To reduce the risk of damage to the sur-
face, do not use polishing agents or hard
wax.
- Never use car wash cycles that apply pro­
tective wax. It can destroy the matte fin­
ish 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 re­
moved .
@ For the sake of the environment
Only wash the vehicle in facilities specially de­
signed 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 vehicle
components, refer to the following table. The in­
formation contained there is simply recommen­
dations. For questions or for components that are not
listed, refer to an authorized Audi dealer
or a qualified workshop. Also follow the informa­
tion found in
~ ,&. .
Cleaning exterior
Component Situation Solution
Wiper blades
Dirty ~ page 55, Cleaning windshield wiper blades
Headlights/ Dirty Soft sponge with a mild soap solution a>
tail lights
Sensors/
Dirty Sensors: soft cloth with a solvent-free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning sol-
ution
Snow/ice Hand
brush/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special cleaning solution
Exhaust tail Road salt
Water, cleaning solution suitable for stainless steel, if nee-
pipes essary
207

Driver side cockpit fuse assignment
Fig . 227 D river sid e cockpit: fuse panel with plastic bracket
Fuse panel @ (brown )
No . Equipment
1 Light switch
2 Emergency start coil (driver iden tification)
3 Left rear door con trol module
4 Head -up display
5 Ho rn
6 Interior lights (headliner)
Steering column lever, m ultifunction
8 steer ing whee l cont ro ls, steering wheel
heati ng
10 Powe r steering column adjustment
1 1 Dr iver door co ntro l mod ule
12 Diagnostic con nector, light/rain sensor
13 Radio rece iver, par king heater
14 Power steering column adjustment
15 Powe r stee ring, A/C comp resso r
16 Brake booster
Fuse panel © (black)
No . Equipment
1 Front seat heating
Fuses and bulbs
Fuse panel © (black)
2 Windshie ld w ipers
3 F ron t ex terior lig hti ng
4 Sliding/tilting s unroof
5 Dr iver power w indow
6 Driver's seat (pneumatic)
7 Pano rama su nroo f
8 Dynam ic steering
9 F ron t ex terior lig hting
10 W indshie ld/head light washer system
11 Left rea r powe r window
12 Panorama su nroof
Front passenger side cockpit fuse
assignment
Fig. 228 Front passenge r side cockp it: fuse panel with
p last ic b racket
Fuse panel @ (black)
No . Equipment
1 Ant i-theft alarm system
2 Transmission contro l modu le
3 Front climate control fan
4 Engine supply
6 Engine control module
267

Fuses and bulbs
Fuse panel @ (black) Fuse panel@ (black)
7 Front passenger door contro l module
10 ESC contro
l modu le
8 Front passenger powe r window 11 Righ t rear power window
9 ESC control module 12 Front passenger
's seat (pneumatic)
Luggage compartment fuse assignment
F ig. 22 9 lu ggage compartment: fu se pane l wit h plastic bracket
Fuse panel @ (black) Fuse panel@ (black)
No. Equipment
1 ESC b
utton, dat a logge r, d iagnos tic con-
necto r, B CM -1, ad apt ive lig ht 10
Rear
seat heating, refrigerator, rearview
mirror
1 1 E lectrome chanical s teer ing
2 Networking gateway
12 Se
lector lever, BCM-2 voltage
3 ad aptive a ir suspension 13 Side assis t
4 Park ing system 14 Engine contro l module
5 Steeri
ng column lever
15 S
tarter
6 Suspension contro
l system sensor
7 Belt tensioners, airbag cont rol mod ule 16
Left
headlight (headl ights w it h adapt ive
li ght)/headlight range co ntrol
Heated washer fluid nozzles, Home link
8 (garage doo r opener), night vision system
cont rol module, sport differe ntia l, ioni ze r
9
Electromechan ica l park ing brake control
mod ule
Fuse panel ® (red)
No. Equipment
1 L
eft reve rsible belt tensioner
2 R ight revers ible belt tens ioner
268