2013 AUDI A6 brake sensor

14 Instrum ent s and w arn ing /indic ato r light s
Canada models:
[I]
Anti-lock braking system (ABS)
defective ./
¢ page20
•
Worn brake pads
¢ page20
:rm
Electromechanical parking brake
¢ page 74
g
Tire pressure monitoring system
./
¢page258
Tire pressure monitoring system
••w;~, ¢ page258
Im
Electronic power control ./
¢ page 21
I Malfunction indicator Lamp (MIL)
111!
./
¢ page21
.,
Engine speed limitation
¢ page 21
I.
Engine oil level
¢ page 18
•
Engine oil sensor
¢ page 21
&1
Battery
¢ pagel7
Ill
Tank system
¢page 21
•
Windshield washer fluid level
¢page22
m
Windshie ld wipers
¢ page22
!I
Remote control key
¢page 71
m
Remote control key
¢ page 74
I!
Battery in remote control key
¢ page32
-.
l:J
Defective ligh t bulb warn ing
¢ page22
II
Rear fog light(s)
¢page22
II
Headlight range control
¢page22
- -
Ill
adaptive light *
¢page22
m
Light -/rain sensor faulty
¢ page 22
- -
•
Audi active lane assist *
¢page92
Im
T ransmission
¢ page 110
Im
Transmission
¢page 110
R1
Transmission
- S t ron ic ® ¢ page 110
•
Electronic steering column lock
¢page 18
- -
.,
Engine start system
¢page 18
£1.p
Electromechanical steering
¢page 196
•
Air suspens ion*
¢ page 18
Ill
Sport differential *
¢page22
Other indicator lights
II
II
I : I -._ I• 11
Turn signals ¢ page 23
USA model s: Cruise control *
¢page
79
,,_
...

Instruments and warning/indicator lights 19
There is a malfunction that can resu lt in re­
stricted driving stability.
Ca refully drive at a maximum speed of 35
mph
(60 km/h) to your authorized Aud i dealer
or qualified workshop to have the malfunction
corrected.
• Air suspension: service mode. Vehicle
can only be moved with restrictions
Carefully drive to your authorized Aud i dealer
or qualified workshop immediately to have
the service mode deactivated.
II Air suspension fault
There is a system malfunction that can result
in restricted driving stability or reduced
ground clearance.
Drive to your authorized Audi dea ler immedi­
ately to have the malfunction corrected.
II Air suspension: vehicle too low. Ground
clearance reduced
The ground clea rance is very low due to a sys ­
tem malfunct ion. Wait until the air suspen­
sion system has restored normal ground clear­
ance . Otherwise, conditions s uch as an uneven
road surface can lead to vehicle damage.
m1 !f Safety systems
The fl (USA models)/ E,I (Canada models) in­
d icator light monitors the safety systems (e .g.
a ir bags, pretensioners) and illuminates for a
few seconds each time you switch the ignition
on.
If the
(I (USA models)/ E,i (Canada mode ls)
indicator light does not go out, or if it illumi ­
nates while you are driv ing, or if it starts to
blink, then there is a malfunction somewhere
in the system. If the light does not illumi nate
when you switch the ignition on, this also
means there is a malfunction.
A WARNING
If you have a malfunction in the safety sys­
tems, contact your authorized Audi dealer
immediately. Otherwise the safety sys- terns may not work
properly in an acci­
dent.
;;,/ {A Electronic Stabilization Control
(ESC )
This warning/indicator light monitors the
Electronic Stabilization Control.
When you switch the ignition on, the ind icator
li ght
G1 turns on briefly to check the f unction.
If the
J.ii) indicator lamp blinks while driving,
the ESC or ASR (Anti-Slip Regu lation) is active­
l y regu lating .
If the
J.ii) indicator lamp illum inates, the sys­
tem has switched the ESC off.
If the indicator light II turns on, the ESC was
switched to ESC sport mode with the button
@ c:> page 192. If this is case, you can reacti­
vate the ESC by switching the ignition off and
then on again . The warning/indicator light
shou ld go o ut to show that the system is fu lly
funct ional aga in.
Stabilization control (ESC/ABS): Fault! See
owner's manual
If the indicator light Ji) and the ABS indicator
light~ (USA models)
![I] (Canada mod ­
els) turn on and the message appears, there is
a malfunction in the ABS system or electronic
differential lock. This also interrupts the ESC.
The brakes still function with their normal
power, but ABS is not active.
Drive to your authorized A udi dealer immedi­
ate ly to have the malfunction corrected.
If the battery terminals were disconnected
and re-connected, the vehicle was jump start ­
ed or the battery is very weak, the ESC sensor
system goes through a learning process for
the first few yards. The warning/indicator
light illuminates. The warning/indicator light
goes out as soon as the learning process is
complete.
For more information about the ESC
c:>page 192.

Instrument s and warnin g/indic ator ligh ts 21
A WARNING 1= ~
Driv ing with bad brakes can cause a coll i-
sion and serious personal injury .
- If the warning light
EiJ and the warning
light
11111> w ith the message B rake
pad s!
comes on in the instrument cluster
display, immediately contact your au­
tho rized Aud i dealer o r qualified work­
shop to have a ll brake pads chec ked or
replaced if necessary.
EPC Electronic power control
This warning/indicator light monitors the
electronic power control.
The Ga warn ing/ indicator light (Electron ic
Power Control) illuminates when you switch
the ignition on as a function check .
(D Tips
If this warning/indicator light illuminates
while you are dr iving, then there is a mal­
function in the engine elect ron ics. Have
the malfunction co rrected as soon as pos­
sible by yo ur autho rized Aud i dea ler o r
qualified repair facility.
Ci Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) is part
of the On-Board Diagnostic (OBD II) system.
The symbot
¢1111ij lights up when the ignit ion is
switched on and w ill turn
off after the engine
has started and has settled at a constant idle
speed. Th is ind icates that the MIL is working
properly .
The warning light illuminates when there is a
malfunct ion in the engine electronic system.
Contact your author ized Audi dealer and have
the ma lfunction corrected.
An improperly closed fuel filler cap may also
cause the MIL light to illum inate
c.> page 222.
For more information c.> page 29.
1) - : USA mod els only
!'1 Engine speed limitation
App lies to veh icles : w ith eng ine speed limitatio n
(I! Engine sp ee d ma ximum XXXX RPM
The eng ine speed is automatically limited to
the speed d isplayed in the dr iver information
system . Th is protects the engine from over­
heating.
The eng ine speed limitation deactivates once
the engine is no longer in the critical tempera­
ture range and you have re leased the acce lera­
tor pedal once.
If the engine speed limitation was activated
by an engine control malfunction, the indica­
tor light
Ga a lso turns on. Make sure that the
speed does not go above the speed disp layed.
Drive to your author ized A udi dealer immedi­
ate ly to have the malfunction corrected.
~, Engine oil level
II Add o il, ma x. x qt (l). You ma y continue
dri ving
When the symbol II and dr iver message ap­
pear, add the amount of oil appearing in the
display at the next opportunity¢
page 230.
~ •. Engine oil sensor
II Oil le vel! Sensor d efecti ve
If the symbol i lluminates, contact your au­
thorized Audi dea ler and have the oil sensor
inspected. Until you have this done, check the
oi l level each time you refue l just to be on the
safe s ide
c.> page 230.
Bil Fuel level indicator
Ii] Ple ase re fuel
If the indicator light turns on for the first
time and the message appears, there are
about 2.6 gallons (10 liters) of fuel left in the
tank. Time to refuel
c.> page 221.
Ii] Tank system malfun ction! Contact dealer ..,_

82 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 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 88.
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. 82 Front of the veh icle: sensors and video camera
The areas that conta in the radar and ultrason­
ic sensors and the v ideo camera
c:::> fig. 82
must never be cove red by stic kers or other ob­
jects or obstructed with dirt, insects, snow or
ice that will interfere w ith the adaptive cruise
control system and braking guard. For infor­
mation on cleaning, refer to
r:;, page 211. The same applies
for any modifications made in
the front area.
T he function of the adaptive cruise control
system and braking guard is limited under
some cond itions:
- Objects can only be de tected when they are
w ithin sensor range
c:::> fig . 85.
-The system has a limited ability to detect
objects that are a short distance ahead, off
to the side of your vehi cle or mov ing into
your lane.
- Some kinds of veh icles 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 al l.
-When drivin g through curves
c:::> page 83 .
-Stat ionary objec ts c:::>page 83.
& WARNING
A lways pay attention to traffic when adap­
tive cruise contro l is switched on and brak­
ing guard is active. As the driver, 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 always take action to avo id
a collis ion . The driver is a lways respons ible
fo r braking at the correct time.
- Improper use of adaptive cru ise control
can cause collisions, other acc idents and
serious personal injury.
- Never let the comfort and convenience
that adaptive cruise control and braking
gua rd offer distract you from the need to
be alert to traffic conditions and the
need to remain in full control of your ve­
hicle at a ll times,
- Always remember that the adaptive
cr uise 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 re gistered by the radar sensors,

Audi adapt ive crui se c ontrol an d bra kin g guard 8 3
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,
heavy 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
conditions .
- To prevent unintended operation, always
switch ACC off when it is not being 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 ler 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. 83 Ex ampl e: dri vin g in to a curve
When dr iving into a curve c:> fig. 83 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. 8 4 Exampl 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 vehicle @, 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 .,._

88 Audi adaptive cruise control and braking guard
Audi braking guard
Descript ion
App lies to vehicles: with Audi adap tive cruise control
F ig . 92 Instr ument cluster: approach warn ing
Braking guard uses radar sensors and a video
camera . It also functions within the lim its 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 veh icle is traveling at a
h igh speed and approachi ng a veh icle up
ahead that is moving more slowly . Bra king
g ua rd does not react if it cannot detect th e
situ ation .
The system advises you of various situations:
- The
distan ce 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 coll is io n. The indicator
li ght
I in the display comes on .
- The
approach warning is g iven when a de­
tected veh icle up ahead in yo ur lane is mov ­
i ng much more slowly than you are o r if it
brakes sha rply . W hen this wa rning is given,
it m ay only be poss ible to avoid a collision
b y swerving or bra ki ng sh arply . Th e indi cator
li gh t
I and indi ca to r i n the disp lay wi ll warn
yo u about the danger¢
fig. 92. You will a lso
hear a n acoustic signa l.
If you do not re act fa st enoug h or do not re act
at all to the sit uat io n, b raking guard will inte r-
ll T hi s is not av ailable in som e coun tri es.
vene by braking and the message braking
guard intervention
wi ll appear.
- If a coll is ion is imm inent, the sys tem wi ll
fi rst prov ide an
acute warning by br iefly and
sharply ap plying the brakes.
- I f you do not re act to the acu te w arning,
brak ing g uard can brake w it h increas ing
force w it h in the lim its of the system . This
red uces the vehicle speed in the event of a
co llision.
- The system can initiate maximum b rak ing
short ly before a co llision
1l . Full dece leration
at high speeds occurs only in vehicles with
adapt ive cru ise control and side assist (pre
sense plus) .
- If the brak ing g uard senses that yo u are not
brak ing hard en ough w hen a co llision is im­
m inent, it can increase t he brak ing fo rce .
- The pre sense f unctions also engage whe n a
col lision is imm inent ¢
page 190 .
Which function s can be controlled?
You can switch b raking guard and the dis­
tance/approach warning on or off in the M MI
i=> page 89, Settings in the MMI.
A WARNING
-
Lack of attentio n can cause collisions, oth-
er accidents and serio us pe rsonal injuries.
Th e braking gua rd is an ass ist system and
ca nnot prevent a collision by it self. T he
dr ive r m ust always intervene. The dr ive r is
a lways res ponsib le f or br ak ing at the cor­
r e ct t ime.
- Always p ay clo se a ttent ion to traff ic,
even when the braking guar d is swi tched
o n. Be ready to in tervene and be ready to
take comp lete contro l whenever necessa­
ry. Always keep the safe and legal dis ­
tance between your ve hicle and veh icles
up ahead.
- Braking guard works within limits and
w ill not respond outside t he system lim­
its, for examp le w hen approachi ng a
stopped vehicle or stati onary obstacle ..,.

Audi adaptive cru ise control and brakin g guar d 89
(end of a traffic jam or veh icle t hat has
br oken down in traffic).
- Alw ays remember that the radar sensor
for the b raking guard works only within
defined detection and ra nge limits that
may prev ent the proper det ection of oth­
er ve hicles.
- The ra dar sensor's function and range
can be reduced by rain, snow and heavy
spray. Moving vehicles up ahead may not
be promptly detected or may not be de­
tected at al l.
- Reflective surfaces includ ing crash barr i­
ers or tunnel ent rances may impair the
function of the radar sensor.
(0 Tips
- You can cance l the braking w ith increas­
i ng fo rce that is initiated by the system
by braking yo urself, by accelerating no­
ticeab ly or by swerving.
- Brak ing guard error messages
~ page
89.
-Keep in mind that braking guard can
brake unexpectedly. Always secure any
ca rgo or objec ts that you are transport ­
i ng to reduce t he risk of d amage o r in­
Ju ry.
Settings in the MMI
Appl ies to vehicles: with Audi adaptive cruise co ntrol
~ Se lect: ICARlf unct ion button> ( Car )* sys­
tems
contro l button > D river assi st > Audi
braking guard .
System -
Switch braking g ua rd On and Off .
When you sw itch the ignition on, the message
Audi braking guard off appears if the system
is switched off.
Early warning -The distance and approac h
warn ings in the display can be switched
On /
Off .
(D Tips
- Your settings are automatically stored
and assigned to the remote control key being used at the time the settings
are
ma de.
- If you switch the ES C to spo rt mode,
braking g uard switches off a utomatica lly
~page
194.
- Switch braking guard off when you a re
loading the vehicle onto a vehicle carrier,
t rain, ship o r other type of transporta­
t ion. This can prevent undesired warn­
ings from the braking guard system.
Messages
App lies to vehicles : wit h Audi ada ptive c ruise contro l
ACC unavail able
ACC and braking guard: unavailable
T he system cannot detect mov ing vehicles up
ahead co rrec tly and is switched off. The sen­
sors have been displaced or a re not worki ng
properly . The Audi pre sense func tions may a l­
so be affected. Drive to yo ur autho rized Audi
dealer or authorized A udi se rvice facility im­
med iate ly to have the malfunction corrected.
ACC: unavailable at this time. No sensor vi­
sion
ACC and braking guide: unavailable at this
time . No sensor vision
Th is message appears if the senso r view is ob­
structed, for examp le by leaves, snow, heavy
sp ray or d irt. C lean the sensors~
fig. 82.
ACC: unava ilabl e at this time . Inclin e too
steep
The road exceeds the max imum possible an­
gle for proper adaptive cru ise control opera­
tion. Adaptive cru ise con tro l is switched off .
ACC: only selector lever positions D , S or M
available
Se lect t he D/S or M selector leve r pos ition.
ACC: unavailabl e at this time . Parking brake
s et
The adaptive cr uise cont rol system switches
off automatically if the park ing b rake is set. ..,.

124 Homelin k®
Homelink ®
Universal remote
control
General information
Applies to vehicles: with Homelink® unive rsal remote
co ntrol
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 moto r signals. Programming the in­
d iv idual remote control fo r you r 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 required by federal safety stand­
ards. This includes any garage door open­
er mode l manufact ured 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 s tandards. Us ing a garage doo r
o pener witho ut these fea tures increases
risk of serious inj ury or death.
- F or safety reasons never release t he
parking brake or s tart the engine while
anyone is standing in front of the vehicle .
- A garage door or an est ate 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 electrica l 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 rang e of motion of any
equ ipme nt being ope rated.
(0 Tips
- If you would like add itional information
on the Home Link® Unive rsal Transce iver,
Homelink compatib le products, or to
purc hase other accessories s uch as the
HomeL ink® Light ing Package, please
contact Homelink at 1-800 -355 -3515 or
on the Internet at www.homelink .com.
- For Declaration 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 vehicle .
Operation
Applies to vehicles: wit h Ho meli nk
Fig . 14 1 Headliner: controls
M 0
9 (!)
~
Req uirement: The bu tto ns must be program­
med ¢
page 125 .
"' To open the garage doo r, press the pro­
grammed b utton. The LED @ will light up o r
flash.
"' To close the ga rage doo r, press the button
again .
Ill>