2013 AUDI A6 brake

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 .

76 On the road
Startin g and automati cally r ele a s ing the
p ark ing b rake
.. When you sta rt to drive as usua l, the park­
ing brake is automatically re leased and your
vehicle begins to move.
When stopping at a traffic signa l or stopping
in city traffic, the parking brake can be ap­
plied. The veh icle does not have to be held
with the footbrake. The park ing brake elimi­
nates the tendency to creep with a drive range
engaged . As soon as you dr ive off as usual,
the park ing brake is released automatically
and the veh icle sta rts to move .
Starting on slope s
When starting on inclines, the starting assist
prevents the vehicle from unintentionally roll­
ing back . The braking force of the parking
brake is not released until sufficient dr iv ing
fo rce has been bu ilt up at the whee ls.
(D Tips
For safety reasons, the park ing brake is re­
leased automatically only when the dr iv­
er 's safety belt is engaged in the buck le.
Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
.. Keep the switch l pulled and depress the
accelerator. The park ing brake stays applied
and prevents the vehicle from ro lling back­
ward.
.. You can release the switch
C®l once you are
sure that you a re develop ing enough for­
ward momentum at the wheels as you de ­
press the accelerator .
Depending on the weight of the r ig (vehicle
and trai ler) and the seve rity of the incline, you
may roll backwards as you start. You can pre­
vent rolling backwards by holding the parking brake switch(®) pulled out and acce lerating -
just as you would when starting on a hill with a conventional hand brake .
Emergency braking
In the event that the conventional brake sys­
tem fails or locks .
.. In an emergency, pull the switch C®l and
con tinue to pull it to slow your vehicle down
w ith the park ing brake.
.. As soon as you release the switch (®) or ac-
celerate, the b rak ing process stops.
If you pull the switch C®l and hold it above a
speed of about 5 mph (8 km/h), the emergen­
cy brak ing f unct ion is init iated . T he ve hicle is
braked at all fou r whee ls by activating the hy­
draulic b rake sys tem. The brake performance
is similar to making an emergency stop~&. .
In order not to act ivate the emergency brak­
ing by mis take, an audib le warning tone (buz­
zer) sounds whe n the switch(®) is pulled . As
soon as t he sw itch C®l is re leased , or the accel­
erator peda l is depressed, emergency braking
stops.
_& WARNING
-Emergency braking should only be used in
an emergency, when the norma l foot brake
has fa iled or the brake pedal is obstructed.
Using the parking brake to perform emer­
gency b raking will slow your veh icle down
as if you had made a full bra ke application .
The laws of physics cannot be suspended
even with ESC and i ts associated compo­
nents (ABS, ASR, EDL) . In corners and
when road or weathe r conditions are bad,
a full brake application can ca use the vehi­
cle to sk id or the rear end to break away -
risking an accident.
Start-Stop-System
Description
Applies to vehicles: with Start -Stop -System
T he Start -Stop-Sys tem can help increase fuel
e conomy and reduce CO 2 emissions.
In the Start-Stop-mode, the engine shuts off
automat ica lly when the veh icle is stopped,
such as at a traffi c light. The igni tion remains .,.

switched on during this stop phase. The en­
gine will be automatically restarted when
needed.
The last Start-Stop-System setting (on/off us­
ing the button
I CAJ ,.I) will be restored when the
ignition is turned on. The LED in the
l@ "'I but­
ton turns on when the Start -Stop-System is
switched off manually.
Basic requirements for the Start-Stop
mode
- The driver's door is closed .
- The driver' seat belt is latched.
- T he hood is closed.
- The vehicle must have been driven faster
than 2.5 mph (4 km/h) since the last stop .
- A tra iler is not hitched to the vehicle.
_&, WARNING
-Never le t the vehicle roll with the engine
switched off. You could lose contro l over
the vehicle . This can lead to a collision
and serious injuries .
- The brake booster and the steering sup­
port do not work wh ile the engine is
switched off. More force is required to
stop and to steer the vehicle .
- To reduce the risk of injuries, make sure
that the Start-Stop-System is turned off
when working in the engine compart­
ment
q page 78.
(D Note
Always switch off the Start-Stop -System
when driving through water ¢page
78.
On the road 77
Starting/stopping the engine
Applies to veh icles: w it h Sta rt-Stop -System
Fig. 77 Inst rument cluster: en g in e sw itched off (stop
p hase)
~ Slow the veh icle to a stop using the brake
and keep pressing the brake pedal. The en­
gine w ill switch off. The
[I] i ndicato r light
appears in the information line in the instru ­
ment cluster display.
~ When you take your foot off the brake ped­
al, the engine restarts . The indicator light
turns off.
Additional information
The eng ine will switch off in the P, D, N and S
positions as well as in manua l mode. In the P
position, the engine will also remain off if you
take your foot off the brake pedal. The engine
starts again when you select another selector
lever position and take your foot off the brake
pedal.
If you select the R position during a Stop
phase, the engine will start again .
Shift from D to P quickly to prevent the engine
from starting unintentionally when shifting
through R.
You can determine for yourself if the engine
will stop or not by reducing or increasing the
amount of force you use to press the brake
pedal. For example, if you only lightly press
on the brake pedal in stop-and and-go traffic
or when turn ing, the engine will not switch off
whe n the vehicle is stationary. As soon as you
press the brake down ha rder, the engine will
switch off.
lill>

78 On the road
@ Tips
When you stop and the start-stop-system
turns the engine off, the ignition remains
on. Make sure that the ignition is switched
off before exiting the vehicle.
General information
Applies to vehicles: with Start-Stop-System
The standard Start-Stop-mode can be cancel­
led for different system-related reasons .
Fig. 78 In st rument cluster: e ngin e-Stop tempo ra ri ly
u navai lab le
Engine will not switch off
Before each stop phase, the system checks i f
certain conditions have been met . For exam ­
p le, the engine w ill
not be switched off in the
following situations:
- The engine has not reached the minimum
r equired temperature for Start-Stop -mode .
- T he interior temperature selected by the A/C
system has not been reached .
- T he ou tside temperature is extremely h igh/
low .
- T he w indshield is being defrosted
9 page 66, 9 page 68.
- The pa rking system* is switched on.
- The battery charge level is too low .
- The steer ing whee l is sharply turned or
there is a steering movement.
- After engaging the reverse gear.
- On sharp inclines .
The
r,J i ndicato r light appears in the informa­
tion line in the instrument cluster disp lay
9 fig. 78. Engine automatically restarts
T
he stop p hase is interrupted in the followi ng
situations, for example . The engine resta rts
without any action by the driver .
- The inte rior temperature varies from the
t empera ture selected in the A/C system.
- The windsh ield is being defrosted
9 page 66, 9 page 68 .
-The brake pedal is pressed severa l times in a
row.
- The battery charge level becomes too low .
- H igh power consumpt ion .
@ Tips
If you shift into the D, Nor S posit ions af­
ter sh ifting into reverse, the vehicle must
be driven faster tha n 6 mph (10 km/h) in
o rd er for the engine to sw itch off aga in.
Switching the Start-Stop-System on/off
manually
Appl ies to vehicles: with Start-Stop-System
If you do not wish to use the system, you can
switch it off manually.
Fig. 79 Center co nsole : Sta rt -Stop -System button
.,. To switch the Start-Stop -System off/on
manually, press the
!iiil~·I button. The LED in
the button turns on when the system is
sw itched off.
(D Tips
If you switch the system off during a stop
phase, the engine will start again auto­
matically.

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.

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 .,._

84 Audi adaptive cruise control and braking guard
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.
Audi adaptive cruise control
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 85 Detection range
What can adaptive cruise control do?
The adaptive cruise control system uses video,
radar and ultrasou nd. Moving vehicles ahead
can be recognized up to about 650 feet (200 m) away.
On open roads w ith no traffic, adaptive cruise
control works like a regular cruise control sys­
tem. The stored speed is maintained. When
approaching a moving vehicle detected up
ahead, the adaptive cruise control system au­
tomatically s lows down to match that vehi­
cle's speed and then maintains the distance
that the driver previous ly stored. As soon as
the system does not detect a vehicle up
ahead, adaptive cruise control accelerates
back up to the stored speed.
In stop-and-go traffic, adaptive cru ise control
can brake until the vehicle stops and acceler­
ate again under certain conditions and if this
is possible within the system's limits and ca­
pabilities¢
page 86. Adaptive cruise control
will not make an emergency stop .
Which functions can be controlled?
When you switch adaptive cruise contro l on,
you can set the current speed as the "control
speed" ¢
page 84, Switching on and off.
When driving, you can stop cruise control
¢
poge 86 or change the speed ¢ page 85
at any time.
You can also set the distance to the object
ahead and set the adaptive cruise control driv­
ing program ¢
page 86.
Switching on and off
Applies to vehicles: with Audi adaptive cruise control
Fig. 86 Selector lever: switching on/off
Fig. 87 Instrument cluster: adaptive cruise control
You can set any speed between 20 mph and
95 mph (30 and 150 km/h).
Indicator lamps and messages in the instru­
ment cluster d isplay inform you about the cur­
rent system status and settings.
An additional indicator appears in the Head­
up D isplay*.
Switching adaptive cruise control on
.,. Pull the lever toward you into position (D
¢ fig. 86. ACC standby appears in the in­
strument cluster display.
Setting the speed and activating
regulation
.,. To set the current speed, press the ISETI
button ¢ fig. 86. The set speed is shown in 1111-