brakes AUDI S6 2013 Owners Manual

16 Instrum ent s and w arn ing /indic ato r light s
wheels co uld lock up first under hard
braking. Rear wheel lock-up can cause
loss of vehicle control and an accident.
Have your vehicle repaired immediately
by your authorized Aud i dealer or a qua li­
fied workshop. Drive slowly and avoid sudden, hard brake applications.
- Canada models: If the brake warn ing
light ., the
DJ warning light and the
ABS warning light
[iJ come on togethe r,
the rear wheels could lock up fi rst unde r
hard braking. Rear wheel lock-up can
cause loss of vehicle control and an acci­
dent. Have your vehicle repaired immedi­
ately by your authorized Audi dealer or a
qualified workshop. Dr ive slowly and
avo id sudden, hard brake applicat ions.
- If the brake warning/indicator light does not go out after a few seconds and the
park ing brake is released, or lights up
wh ile you are driving, the fluid level in
the brake f luid reservoir is too low . If you
believe that it is safe to do so, proceed
immediately at low speed to the nearest
authorized Audi dealer or qualified repair
facility and have the brake system in ­
spected.
- Always keep in mind that after several
brake applications, yo u will need greater
pressure on the brake peda l to stop your
vehicle. Do not re ly on stra ined brakes to
respond w ith maximum stopp ing power
in critical situations. You must allow for
increased brak ing distances . The extra
distance used up by fad ing brakes could
lead to an acc ident.
PARK/ (®) Electromechanical parking
brake
The warning/indicator light monitors the
electromechanical parking brake.
If the indicator light- (USA models)/ .
(Canada models) tu rns on, the park ing brake
was set . If the parking brake is set when the
ignit ion is off, the indicato r light turns off af­
ter about 20 seconds . The warning/indicator light wi
ll go out when
the parking brake is re leased.
- (USA m odels) /. (C an ada mod els)
C a uti on: V eh icle p ark ed t oo stee p
If the indicator light b links and the message
appea rs, there is not enough braking power to
keep the vehicle from roll ing . T he b rakes have
overheated. The veh icle cou ld roll away even
on a sma ll incline.
Pr ess brake p edal to r ele ase parking brake
To release the park ing brake, press the brake
pedal and press the button
@ii or start driving
with starting assist at the same time
~ page 75.
Pl ease re le a se park ing brak e
To release the parking brake manually, press
the brake pedal and press the button
@ii at the
same t ime. The parking brake only releases
automat ica lly if the driver's safety belt is fas­
tened .
IIJ Parking b rake!
If the IIJ indicator light turns on and th is
message appears, there is a parking brake
malfunction. Drive to your authorized Audi
dealer or qualif ied workshop immediately to
have the malfunct ion corrected.
- L Engine cooling system malfunction
A malfunction in the engine cooling system
must be repaired as soon as possible .
• Switch off engin e and check coolant le vel
If the indicator l ight turns on and the mes­
sage appea rs, the coolant temperature is too
high or the coolant leve l is too low .
"' Pull off the road.
"' Stop the vehicle .
"' Tur n off the engine.
"' Check coolant level ~
page 232.
"'Add coolant if necessary ~ page 233.
"' Continue driving on ly after the engine cool­
ant warning/ind icator light goes out.
"' Contact your authorized Audi dealer for as­
sistance if necessary .

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 ..,_

58 Seats and storage
vehicle movement, hot liquid could spill,
causing scalding burns. Spilled hot liquid
can also cause an accident and personal
injury .
- Use only soft cups in the cupholder. Hard
cups and glasses can cause injury in an
accident .
- Never use the cupholder or adapter as an
ashtray- risk of fire.
([) Note
Only drink containers with lids should be
carried in the cupholder. Liquid could spill
out and damage your vehicle's electronic
equipment or stain the upholstery, etc.
Cooled glove compartment
Ap plies to vehicles: with coole d glove compa rtm ent
The cooled glove compartment only functions
when the AIC system is switched on.
Fig. 60 Glove compa rtment: switc hing cooling mode
o n/off
~ Turn the knob@ counterclockwise to
switch cooling on. The symbols on the knob
indicate the correct position.
~ Turn the knob @ clockwise to switch cool-
ing off .
The glove compartment cooling mode only
functions when the vehicle A/C system is
switched on .
If the heating is switched on,
switching the glove compartment cooling
mode
off is recommended .
_& WARNING
Always leave the lid on the glove compart­
ment cover closed while driving to reduce
th e risk of injury.
Additional storage
Ther e are a variety of storage compartments
and fasteners in various places in the vehicle.
- Storage compartments in the doors
- Compartment in the glove compartment
(cooled*) . The glove compartment can be
locked using the mechanical key
r::;, page 32.
-Storage compartment for (sun)glasses* in
the roof (near the interior mirror)
- Storage compartments under the center
armrests
- Storage compartment on the rear side of
the front seat* . The compartment can hold a
maximum weight of 1 kg .
- Compartments* on the back of the front
seat backrests
- Garment hooks on the sides of the pillars in
the rear of the vehicle and in the rear grab
handles
- Compartment in the rear center armrest
- Two mounting hooks* under the base of the
rear window inside the luggage compart­
ment. You can attach light objects to these
hooks . The mounting hooks are spring -load­
ed and will return to their normal position
when not in use.
_& WARNING
- Always remove objects from the instru­
ment panel. Any items not stored could
slide around inside the vehicle while driv­
ing or when accelerating or when apply­
ing the brakes or when driving around a
corner.
- When you are driving make sure that
anything you may have placed in the cen­
ter console or other storage locations
cannot fall out into the footwells. In case
of sudden braking you would not be able
to brake or accelerate.
- Always keep the lid of the compartment
for (sun)glasses* closed while driving to
reduce the risk of injury during a sudden
braking maneuver or in the event of an
accident.
-

Emergency brake function
An emergency brake ensures that the vehicle
can be slowed down even if the
normal brakes
fail
c::> pag e 76, Emergency broking .
Indicator light s
-If the par king b rake is closed w ith the igni­
t ion
s witched on the indicator lights come
on - (USA models)/ . (Canada models)
in the instrument cluster and in the switch.
- If the par king brake is closed w ith the igni ­
tion
s witc hed off the indicator lights come
on - (USA models)/ . (Canada models)
in the instr ument cluster and in the switch
for about 20 seconds.
A WARNING
Do not press the accelerator peda l inadver­
tently if the vehicle is stat ionary but the
eng ine is running and a gear is selected .
Otherw ise the vehicle will start to move
immediately and cou ld result in a crash .
(D Note
If the symbol . in the display or the ind i­
cato r light
1111 (USA models) . (Cana ­
da models) in the instrument cluster flash­
es , the re is a malfunction in the bra ke sys­
tem. Please refer to t he detai led descr ip­
t ion of the indicator lights ¢
page 15.
- If the indicato r light - (USA mod-
els) . (Canada mode ls) or
IIJ t ur ns
on, there may be a malfunction in the
parking brake
r=> page 16.
@ Tips
-You can apply the pa rking brake at any
time -even w ith the ignition swi tched
off. The ignition must be on in order to
release the parking brake.
- Occasiona l noises when the parking
brake is applied and re leased are norma l
and are not a ca use for concern .
- When the vehicle is parked, the parking
brake goes thro ugh a se lf-test cycle at
r egular intervals . Any assoc iated noises
are norma l.
On the ro ad 75
Parking
Parking
~ Stop the vehicle with the foot brake .
~ Pull the switch(®) to apply t he pa rking
bra ke .
~ Select the P se lec to r lever posit ion
r=> poge 105.
~ Turn the engine off c::> &_.
In addition on inclines and grades
~ Tu rn the steering wheel so that yo ur vehicle
w il l roll aga inst the c urb in c ase it shou ld
s tart to move .
T he pa rk ing brake activates automat ica lly
when you swi tch the ign ition off. This does not
happe n if you se lect the N selector lever posi­
tion or switch the parking off with the~ but ­
ton before switching the ignition off .
A WARNING
-When you leave your vehicle -even if on ­
ly briefly -always take the ign it ion key
with you . This applies particularly when
children remain in the vehicle. Othe rwise
the children could start the engine, re­ lease the parking brake o r operate elec­
trica l equipment (e.g. power wi ndows).
There i s the r is k of an accident.
- When the veh icle is locked, no one -par­
ticularly not childre n should rema in in
the vehicle . Locked doors ma ke it mo re
difficult for emergency wo rke rs to ge t in ­
to the vehicle -putting lives at risk .
Starting from rest
The starting assist fun ction ensures that the
parking broke is released automatically upon starting .
Stopping and applying parking brake
~ Pull the switch(®) to apply the pa rking
bra ke .

80 On the road
The stored speed and the ind icator light
A;(l)~i~ (US mo dels) 1,'I (Canadian mode ls) a p­
pea r in the instrument cluster d isp lay
c::> fig. 81. The display may vary, depending on
the type of d isplay in your vehicle .
This informat ion is also shown briefly in the
Head -up Display*.
The speed is kept constant v ia an engine o ut­
put adjustment or active b rake intervention.
A WARNING
- Always pay attention to traffic even when
the cruise control is switched on. You are
always responsible for your speed and
the distance between your vehicle and
other vehicles .
- For safety reasons, the cruise control
should not be used in the city, in stop­
and-go traff ic, on twist ing roads and
when road conditions are poor (such as ice , fog, grave l, heavy ra in and hydro­
planing) -risk of accident.
- Turn
off the cruise control temporar ily
when entering turn lanes, highway exit lanes o r in construc tion zones.
- Please note that inadvertently "rest ing"
yo ur foot on the accelerator peda l causes
the cruise control not to brake . T his is
because the cr uise control is overridden
by the d river's acce leration .
- If a brake system malfunc tion such as
overheating occurs when the cruise con ­
tro l system is switched on, the braking
function in the system may be switched
off. The other cruise control functions re­
ma in active as long as the indicator light
[~;rn~i~ (US models) !Ill (Canad ian mod ­
els) is on .
(j) Tips
The brake lights illuminate as soon as the
brakes decelerate automat ica lly.
Changing speed
Applies to veh icles: w ith cru ise control
., To increase/decrease the speed in inc re­
ments, tap the lever in the
0 10 direc tion
c::> fig . 80
., To increase/decrease the speed quic kly,
hold t he lever in the
0 10 direction until
the desired speed is displayed.
You can also press the accelerator pedal down
to increase your speed, e.g . if you want to
pass someone . The speed you saved earlier
will res ume as soon as you release the acceler­
ator pedal.
If, however, you exceed your saved speed by
6 mph (10 km/h) for longer than 5 m inutes,
the cr uise control wi ll turn
off temporari ly.
The green symbol
A;(l)~i~ (US mode ls) 1,'I
(Canadian mode ls) in the display will go out
but the saved speed rema ins the same .
Presetting your speed
Applies to veh icles : w ith cru ise control
You can preset your desired speed while the
vehicle is not moving.
., Switch on the ignition.
., Pull lever into position
(D c::> fig . 80.
., Press t he lever in the 0 or 0 direction to
increase or decrease your speed .
., Release the lever to save that speed .
This function makes it possible, for examp le,
to save the speed you want before dr iving on
the h ighway. Once on t he h ighway, act ivate
the cru ise control by pulling the lever toward
(D .
Switching the system off
Applies to veh icles: w ith cruise control
Temporary deactivation
., Press the b rake pedal, or
., Press the leve r into posi tion @(n ot clicked
into place)
c::> fig. 80, or
... Drive for longer t han 5 min utes at more
than 5 mph (10 km/h) above the stored
speed.

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 .,._

Audi adaptive cruise control and braking guard 85
the tachometer @and is also shown briefly
in the display @¢
fig. 87 .
.. You must also press the brake peda l when
the vehicle is stopped.
Switching adaptive cruise control off
.. Push the lever away from you into position
@ until it clicks into place. The message
ACC off appears.
@ Indicator lights
r• 1 -Adaptive cruise control is switched on. No
vehicles are detected up ahead . The stored
speed is ma intained.
I -A moving vehicle is detected up ahead .
The adaptive cruise control system regulates
the speed and distance to the moving vehicle
ahead and acce lerates/brakes automatical ly.
fa) -Adaptive cruise control is switched on. A
moving vehicle up ahead was detected. Your
ve hicl e remains stopped.
I -When automat ic braking is not able to
keep enough distance to a previously detected
moving vehicle up ahead, you must take con­
trol and brake¢
page 87, Prompt for driver
intervention.
© Display
If adaptive cruise control is not shown in the
d isp lay, you can call it up with the multifunc­
tion steering wheel buttons ¢
page 23.
Based on the symbols in the d isplay, you can
determine if the system is maintaining a dis­
tance to the vehicle ahead and what that d is­
tance is.
No vehicle -No veh icle ahead was detected .
White vehicle -A vehicle ahead was detected.
Red vehicle -Prompt for the driver to take ac­
tion
¢ page 87.
Both arrow s on the scale© indicate the dis­
tance to the vehicle ahead. No arrow appears
when the vehicle is on an open road and there
is no object ahead . If an object is detected
ahead , the arrow moves on the scale . The
green zone on the scale shows the stored
distance. For information on changing the
stored distance, refer to ¢
page 86. If the
distance selected is too close or may soon be­
come too close, the arrows move into the red
zone on the sca le .
A WARNING
Improper use of the adaptive cruise con­
trol can cause collisions, other accidents
and serious personal injur ies .
- Pressing the
!SET ! button when driv ing at
speeds below
20 mph (30 km/h), will au­
tomatically accelerate the vehicle to
20
mph (30 km/h), which is the minimum
speed that can be set.
(D Tips
-If you switch the ignit ion or the adaptive
cruise control off, the set speed is erased
from the system memory.
- You cannot switch the Electronic Stabili­
zation Control (ESC) to the SPORT mode
when adaptive cruise control is switched
on.
Changing the speed
Applies to vehicles: with Aud i adapt ive crui se control
0
f
• 0
Fig. 88 Selector lever: changing the speed
.. To increase o r reduce the speed in incre­
ments,
tap the lever up or down.
-0:, N 0 ± ... a)
.. To incr ease o r reduce the speed quickly,
hold the lever up or down until the red LED
@ reaches the desired speed¢
fig. 87.
Following any changes, the new stored speed
will be displayed briefly in the display @
¢fig. 87.

86 Audi adaptive cruise control and braking guard
Driv ing in stop-and-go traff ic
App lies to vehicles: with Audi adaptive cruise control
The adaptive cruise co ntro l system a lso as­
sis ts you in stop- and -go traff ic. If a previo us
detec ted veh icle ahead s tops, yo ur vehicle will
brake to a stop, within the limits o f the sys ­
tem .
,,. To resume driv ing wi th adap tive cruise con­
t ro l, tap the accelerator pe dal or
,,. Pu ll the lever toward yo u in to posit ion @
¢fig. 89.
@ Tips
-If ada ptive cruise con trol is a ctive an d
you r vehicle does not start driving as ex­
pected after pulling the lever once, you
can start out aga in by tapp ing the accel­
erato r pedal.
- If an obstacle is detected when yo ur ve­
h icle starts dr iv ing, the system w ill
prompt you to take over¢
page 87.
Your vehicle w ill drive more s low ly when
star ting . This may a lso happe n in some
s ituation s whe n no obstacle is apparent .
Interrupting cruise control
Applies to vehicles: with Audi adaptive cruise control
Fig. 89 Se lecto r leve l
Requ irement : adaptive cruise control must be
sw itched on.
Overriding crui se control
,,. To accelerate ma nually, pull the lever to­
ward you into position @and hold it there .
The message
ACC override appears . Or
,,. press the accelerato r peda l. ,,.
To res ume cruise cont ro l, re lease the lever
or take your foot off the accelerato r pedal.
Canceling cruise control while driving
,,. Move the lever in to posi tion @. The mes ­
s a ge
ACC standby ap pears. Or
,,. press t he br ake pedal.
,,. To res ume the stored spee d, move the lever
into position @.
Canceling cruise control when stopped
,,. Push the leve r away from yo u into pos it io n
@ . Th e message
ACC standby appe ars.
,,. To res ume cruise cont ro l, press the brake
pedal an d pull th e lever toward you into po­
sition @.
A WARNING
• -
Never resume the stored speed if the
sp eed is too high for p revailing r oad, traf­
f ic or weat her condit io ns .
Setting the distance
Applies to vehicles: with Aud i adapt ive cru ise contro l
Fig. 90 Se lecto r lever : setting t he distance
,,. Tap the switch to display the current set dis ­
tance
¢ fig. 90 .
,,. To increase or reduce the d istance by incre ­
ments, tap the switch again to the left or
r ight. The d istance between the two vehicles
w ill change in the instrument cluste r dis­
p lay .
When approac hing a mov ing vehicle up ahead,
the adaptive cruise control system automati ­
ca lly brakes to match th at object's speed and
Ill>

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 ..,.