2018 AUDI A6 brakes

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" N .... 0 0 \.J ' Engine coolant temperature
Pay att ention specifica lly to the coolan t tempera ­
t ure d isp lay when t here are high outside tempe r­
atures, an d when dr iv ing on long inclines
~ page 9 . Shift to a highe r gear in a timely man ­
ne r.
A WARNING
Constant b raking causes the brakes to ove r­
heat and substant ially reduces b raking per­
formance, increases brak ing distance or caus­
es complete fa ilu re of the brake system.
-
Trailer towing
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a co .... N
" N .... 0 0 \.J ' -Please note that unconsciously "resting"
yo ur foot on the accelerator pedal prevents
the cruise control from braking. Th is is be­
cause pressing the acce lerator pedal over­
rides the cruise control system .
- If a brake system ma lf u nction such as over­
heating occu rs when the c ruise contro l sys­
tem is switched on, the braking function in
the system may be switched off . The rest of
t h e cruise control system f unction s remain
ac tive as long as
the @;(IM~ (USA model s) /
l'I (C anada models) indi cator light is on .
(D Tips
The brake ligh ts turn on when the brakes a re
ap plied a utomat ica lly .
Changing speed
Applies to: vehicles with cruise control system
.. To inc rease o r decrease the speed in incre ­
ments, tap the lever toward
0 10 <=> page 84 ,
fig . 87 .
.. To inc rease o r decrease the speed qu ickly, ho ld
the leve r in the
010 direction until the de­
s ir ed speed is displayed.
You can a lso press the acce lerator pedal down to
increase yo ur speed, for example i f you want to
pass someone. The speed you set earlier w ill re­
sume as soo n as you release t he accelerator ped­
al.
However, if you exceed your saved speed by 5
mph (10 km/h) for longe r th an 6 mi nutes, the
cru ise control system tur ns off temporar ily .
The
green @;(i)~i~ (USA models) !l'I (Canada mod ­
e ls) indicator light in the speedometer tu rns off
and the stored speed is maintained.
Preselecting the speed
Applies to: vehicles with cruise control system
You can pre-select your desired speed when the
vehicle is stationary.
.. Switch the ign ition on.
.. Pull the lever into position @<=> page 84,
fig. 87 .
A ss istance systems
.. To increase or decrease the speed, tap the lever
toward
0 10 .
.. To store t he speed d isp layed, release the leve r.
T his func tion makes it possible , fo r example, to
save the spee d you want before driving on the
highway. Once on the highway, activate the
c ruise contro l by pull ing the leve r
towa rd @ .
Switching off
Applies to : vehicles with cruise control system
Deact ivating temporarily
.. Press the brake pedal, or
.. Press the lever into position @(not clicked into
p lace) <=>
page 84, fig . 87, or
.. Dr ive fo r longer t han 5 m inutes faster than 5
mph (10 km/h) above the stored speed .
Switching off completely
.. Press the lever into position @(clicked into
p lace), or
.. Switch the ignit ion off .
The speed you stored will be ma intained if the
cruise contro l has been switched off temporari ly .
To resume the stored speed, re lease the brake
peda l and pull the lever to
position @.
Switching the ignition off wi ll erase the stored
speed.
A WARNING "---
You should only resume the sto red speed if it
i s no t too high fo r existing t raff ic conditions .
Otherw ise you can inc rease the risk of an acci­
d ent .
85

Ass is tance sy stem s
Audi adaptive cruise
control
Description
A pp lies to: ve hicles w ith Audi adaptive cruise co ntro l
F ig. 88 Detection range
The adaptive cruise control system is a combina­
tion of speed and distance regulation.
It assists
the dr iver by bot h regula ting the speed and
maintaining a distance to the vehicle driving
ahead, within the limits of the system .
If the sys­
tem detects and object ahead, adaptive cruise
control can brake and accelerate your vehicle.
This makes driving more comfortable both on
long stretches of hig hway and in stop-and-go
traffic .
What c an adapti ve crui se control do ?
The adaptive cruise contro l system uses video, ra­
dar and ultrasound. Objects driving ahead can be
recognized up to 650 feet (200 m) away.
On open roads with no traffic, it functions like a
cruise control system . The stored speed is main­
tained. When approaching an object ahead, the
adaptive cruise control system automatically brakes to match that object's speed and then
maintains t he stored d istance . As soon as the
system does not detect an object ahead, adaptive
cru ise control acce lerates up to the stored speed .
In stop-and-go traffic, adaptive cru ise control can
brake unt il the vehicle is stat ionary and then be­
g in driving aga in under certain conditions
c::> page89.
Audi braking guard can war n you about an im ­
pending collision and initiate brak ing maneuve rs
<=:> page 91 .
86
Which functions can be controlled?
When you switch ad apt ive cr uise control on, you
can set the current speed as the "control speed"
c::> page 88, Switching on/off.
When dr iving, you can stop cruise cont rol
¢ page 90 or ch ange the speed c::> page 89 at
any time.
You can also set the distance to the object mov­ i ng ahead and se t the driving mode of t he adap­
tive cr uise
control¢ page 90.
General information
App lies to : vehicles wi th Audi adap tive c ruise con trol
Fig. 89 Fro nt of th e vehicle: senso rs a nd video camera
The areas that contain the rada r and ultrasonic
senso rs and the video camera
c::> fig . 89 must not
be covered by stickers, deposits or o ther objects
because this can interfere with the function of
the adapt ive cruise control system and braking
guard . For info rmation on clea ning, see
¢ page 221. The same applies for any modif ica­
tions made in the front area.
The function of the adaptive cru ise control sys­
tem and braking guard is limited under some
cond itions.
- Objects can only be detected when they are
w ith in the sensor range
<=:>page 86, fig. 88.
- The system has a l imi ted abili ty to detect ob­
jec ts that are a sho rt d istance ahead, off to the
side of your vehicle or moving into your lane.
- Obje cts that are d ifficult to detect such as mo­
torcycles, veh icles with high ground clea rance
or an overhanging load are detected late or not
detected at all.
- When driving through curves
c::> page 88. IJ>

Assistance systems
In curves
Applies to: vehicles with Audi adaptive cruise contro l
Fig. 90 Example: dr ivi ng into a curve
When driving into a curve ¢ fig. 90 and out of a
curve, the adaptive cruise control may react to an
object in the ne ighbor ing la ne and apply the
brakes. You can p revent that by pressing the ac­
celerator pedal b riefly.
Stationary objects
Applies to: vehicles with Audi adaptive cruise control
F ig . 91 Example: object changi ng lanes and stationa ry o b·
j e ct
The adaptive cruise contro l system only reacts to
objects that are moving or that the system has
already detected as moving. For examp le, it can
react when a vehicle that has already been de­
tected @turns or changes lanes, but adaptive
cru ise control does not react to a stat ionary vehi­
cle @.
88
Switching on/off
Applies to: vehicles with Audi adaptive cruise control
Fig. 92 Operat ing lever: switc hing on and off
Fig. 93 Instrument cl ust er: a daptive c ruise control
You can set any speed between 20 mph (30 km/
h) and 95 mph (150 km/h) .
Indicator lights and messages in the instrument
cluster disp lay inform you about the current sit­
uation and setting .
An additional indicator appears in the head-up
display*.
Switching adaptive cruise control on
.,.. Pull the lever toward you into position @
¢ fig. 92. ACC: standby appears in the display.
Storing the speed and activating regulation
.,.. To store the cur rent speed, press the ISET I but­
ton
¢ fig. 92. The stored speed is shown in the
speedometer in the LE D line @and appears
briefly in the info rmation
line @¢ fig. 93 .
.,.. To activate the regulation while stationary, also
press the brake pedal.
Switching adaptive cruise control off
.,.. Push the leve r away from you into position@
until it clicks into place. The message
ACC : off
appears.

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" N ,...,
0 0 <..:l ' @ Indicator lights
•-Adaptive cru ise control is switched on . No
objects are detected ahead. The stored speed is
maintained .
•-An object a head was de tected. The adap tive
cr uise control system regula tes the speed and
d istance to the ob ject ahead and acce lerates/
brakes a utomatically.
r-j -Adaptive cru ise con trol is switched on . An
object ahead was detec ted . Your vehicle rema ins
stopped and w ill not s tart dr iv ing automat ica lly.
• -The automatic brak ing is no t enough to
main tain a sufficient distance to a n object ahead.
You must inte rvene
¢ page 91, Reques t for
driver intervention.
© Instrument cluster display
I f adaptive cruise control is not shown in the in­
strument cluster disp lay, yo u can call it up using
the mu ltifu nction stee ring wheel b uttons
¢ page 19.
Based on the graphics in the d isp lay, you can de­
termine if the system is ma inta ining a distance to
the object ahead and what that distance is.
No vehicle -no object was detected ahead .
White vehicle -an object was detected ahead.
Red vehicle -request for driver intervention
¢ page 91 .
Both arrow s on the scale © indicate the dis tance
to the object a head . No ar row appea rs when the
ve hicle is on an open road and there is no object
ahead. If an object is detected ahead, the arrow
moves on the scale.
T he green zone on the sca le ind icates the s tore
d ista nce . For information on changing the dis ­
tance, refer to
~ page 90. If the distance se ­
lect ed is exce eded or not reached, th e arrow
moves into the red zone on the scale.
A WARNING
If you press the ISE TI button when d riving at
speeds below 20 mph (30 km/h), the vehicle
accelerates automat ically up to 20 mph (30
A ssi st a nce systems
km/h), wh ic h is the minim um speed that can
be set .
(D Tips
-If you switch the ignit ion or the adaptive
cruise control system off, the set speed is
erased fo r safety reasons .
-The e lectronic stabilization control (ESC)
and the anti -slip -regulation (ASR) are auto­
matically switched on when the adaptive
cruise cont rol is switched on.
Changing the speed
Applies to: vehicles with Audi adaptive cruise control
0
f
•
0
Fi g. 9 4 Operating lever : chang ing t he sp eed
.,. To increase or reduce the speed in increments,
tap the lever up o r down.
.,. To increase or decrease the speed quick ly, hold
the lever up or down until the red LED @reach­
es the des ired
speed ¢ page 88, fig . 93.
After each change, the new sto red speed appears
briefly in the information
line ¢ page 88 , fig . 93
@ .
Driving in stop-and-go traffic
Applies to: vehicles with Audi adapt ive cru ise control
The adaptive cru ise control system also assists
you in stop-and-go traffic .
Stopping automatically
If an object ahead stops, your vehicle will brake
and stay at a stop, within the limits of t he sys­
tem . The Sta rt/Stop system* can be used as usu -
al.
..,_
89

Ass is tance sy stem s
Driving manually
.,. Tap the acce lerato r pedal, o r
.,. pull the lever toward you into position @.
(D Tips
If an obstacle is detected whe n your veh icle
starts moving, the driver intervention request
appears
¢ page 91. Your vehicle will drive
more s low ly when starting. This may also
happen in some situations when there is no
apparent obstacle.
Interrupting cruise control
App lies to: veh icles with Audi adaptive cruise control
Fig . 95 S ele ctor leve r
Req uirement: adaptiv e cruis e control must be
sw itched on.
Overriding cruise control
.,. T o accelerate manually , p ull the lever toward
you into position @and ho ld it the re . T he mes­
sage
ACC : over ride appears. Or
.,. Press the accelerator pedal.
.,. T o resume cru ise control, release the lever or
take your foot off the accelerator pedal.
Canceling c ruise contr ol while driving
.,. Move the lever into posit ion @. The message
AC C: standby appears . Or
.,. Press the brake pedal.
.,. T o resume the stored speed, move the lever in­
to position
@ .
Canceling crui se contr ol when stopped
.,. Push the lever away from you into position @.
The message
ACC: standby appea rs.
90
.,. To resume c ruise contro l, press the brake peda l
and pull the lever toward you into position @ .
A WARNING
It is dangerous to activate cruise control and
resume the stored speed when the current
road , traffic or weather conditions do not per­
mit this . This increases the risk of an accident .
· Setting the distance
Applies to: vehicles with Audi adapt ive c ruise control
Fig. 96 Operat ing lever: settin g th e d ista nce
.,. T ap the switch to display the current set dis­
tance
c> fig . 96.
N a, N 9 ::c
~
.,. To increase or reduce the dis tance in incre­
ments, tap the sw itch again to the r ight or left .
The d istance between the two vehicles will
change in the instrumen t cluster display .
When app roaching an object ahead, the adaptive
c ruise contro l system brakes to match that speed
and then adjusts to the set distance . If the object
ahead ac celerates, adaptive c ruise co ntro l w ill al­
so ac ce lerate up to the stored speed .
The higher the speed, the greater the distance in meters
c> ,&. . The Distance 3 setting is recom­
mended. That is equa l to the general recommen­
da tion of
" hal f the speed shown on the speedom­
ete r" .
The distances provided a re spec ified values . De­
pending on the driv ing s ituation and the way the
ob je ct ahe ad is dr iv ing, the actual dist ance may
be more or less than these ta rget distan ces .
The var ious symbols for the time inc rements ap­
pears briefly in the info rmation line @
¢ page 88, fig . 93 when you change the settings. II>

Ass is tanc e system s
What can the braking guard do?
When detected in t ime, the system can assess
dangerous situations where an object ahead
brakes suddenly or if your own vehicle is traveling
at a high speed and approaching an object that is moving more slowly. The braking guard does not
react if it cannot detect the s ituation.
The system advises you of various dangerous sit­ uations :
- T he
dista nce warning occurs if you d rive too
closely to the object ahead for a long period of
time. If the object ahead brakes strongly, you
would not be able to avoid a collision .
The.
indicator light appears as an indication for this.
- The
app ro ach warning occurs when an object
ahead is traveling more slow ly or brakes
strongly. When th is warning occurs, it may only
be possible to avoid a co llision by swerv ing or
braking strongly . The danger is indicated by the
• ind icator light ¢ fig . 98 . An aud io signal w ill
also sound .
If you do not react early enough or at all to a dan­
ge rous situation, the braking guard suppo rts you
with a brak ing intervention .
- If a collision is imminent, the system will f irst
provide an
a cut e warn ing by braking sharply.
- If you do not react to the acute warning, the braking guard can increase the braking force
within the limits of the system
ll . Th is reduces
the vehicle speed in the event of a collision .
- The system can init iate comp lete deceleration
shortly before a collision
ll _ Full deceleration at
high speeds occurs only in vehicles with adap­
tive cru ise control and s ide ass ist (pre sense
pl us).
- If the braking gua rd determines that you are
not brak ing strongly enough whe n there is an
im pending co llision, it can increase the bra king
force .
- T he pre sense functions also engage whe n
t h ere is an impend ing collision ¢
page 94.
l) Th is is not ava ilab le in some co untri es .
92
Which fun ction s can be controlled?
Yo u can swi tch the braking guard and the d is­
tance/approach warning on or
off in the Infotain ­
ment system ¢
page 93, Settings in the Info ­
tainment system .
A WARNING
Lack of attention can cause collisions, other
accidents and ser ious personal injuries . The
braking guard is an assist system and cannot
prevent a collis ion by itself . The dr iver must
a lways intervene. The d river is always respon­
sib le for braking at the co rrect t ime.
- Always pay close attention to traffic, even
when the b raking guard is sw itched on. Be
ready to intervene and be ready to take
co mplete co ntro l whenever necessa ry . Al ­
ways keep the sa fe and legal distance be ­
tween your vehicle and ve hicles up ahead .
- Br aki ng g uard wo rks w ithin limits and w ill
no t respond outside the system limits, for
examp le when approaching a stopped vehi ­
cle or stationary obstacle (end of a traffic
jam or ve hicle that has broken down in traf ­
fic).
- Always remember that the radar sensor for
the brak ing guard works only within defined
detection and range limits that may prevent
the proper detection of other vehicles .
- The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Mov ing veh icles up ahead may not be
promptly detected or may not be detected
at al l.
- Reflective surfaces including crash ba rr iers
or tunne l entra nces may impair the function
of the rada r senso r.
(D Tips
- You can cancel the braking with increas ing
force that is initiated by the system by brak­ ing yourse lf, by acce le rating not iceably or
by swerv ing.
- Keep in mind that b raking gua rd can b rake
unexpectedly. A lways secure a ny cargo or

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" N .... 0 0 \,;J ' Intelligent Technology Electronic stabilization
control (ESC)
Description
Electronic stabilization control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critica l sit­
uations such as the vehicle oversteering and un­
dersteering or the wheels are spinning. The vehi­
cle is stabilized by applying the brakes or reduc­ ing engine torque. As soon as the ESC is actively
regulating, the
If] indicator light b links in the in­
strument cluster.
The following systems are integrated in the ESC:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking when brak­
ing. The vehicle can still be steered even during
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal. A pulsing in the
brake pedal indicates that the system is act ing to
stabilize the vehicle .
Brake assist system
The brake assist system can decrease braking dis­
tance. It increases braking power when the driver
presses the brake pedal quickly in emergency sit­
uations . You must press and hold the brake pedal
until the dangerous situat ion is over . In veh icles
with adaptive cruise contro l*, the brake assist
system is more sensitive if the distance detected
to the vehicle dr iv ing ahead is too small. On
vehicles with activated and functioning night vi­
sion assist*, the brake assist system can respond more sensitively if there is a warning .
Anti-Slip Regulation (ASR)
ASR reduces eng ine power when the drive wheels
begin spinning and adapts the force to the road
conditions. This makes it easier to start, acceler­
ate and drive up hills.
Electronic differential lock (EDL)
The EDL applies the brakes to a whee l that starts
spinning and transfers the drive power to the
other driving wheel or wheels (if the vehicle is
Intelligent Technology
equipped with a ll wheel drive*). This function is
not avai lab le at higher speeds.
In extreme cases , EDL automatically switches off
to keep t he brake on the braked whee l from over ­
heating. The vehicle is still working correctly. EDL
will switch on again automatically when condi­
tions have returned to normal.
Power steering
The ESC can also support veh icle stability
through steering .
Selective wheel torque control
Selective wheel torque control is used when driv­
i ng on curves. The front whee l on the ins ide of
the curve or both wheels on the ins ide of the
curve are braked selectively as needed. This al­
lows more precise driving in curves.
Automatic post-collision braking system
The "automat ic post-collis ion braking system"
can help to reduce the risk of sliding and of addi­
tional collisions after an accident. If the airbag
contro l module
detects a co llision above a certa in
vehicle speed, the vehicle is braked by the ESC.
T he vehicle does not brake automatically if:
- the driver presses the accelerator pedal, or
- the braking force generated by the pressed brake pedal is greater than the braking force
that would be initiated by the system, or
- the ESC, the brake system or the vehicle electri­
cal system are not functioning.
A WARNING
-
- The ESC and its integrated systems cannot
overcome the lim its imposed by natura l
p hys ica l laws. This is especially impo rtant
on slippery or wet roads. If the systems be­
g in acting to stabilize yo ur vehicle, you
should immediately alter your speed to
match the road and traffic conditions. Do
not let the increased safety provided tempt
you into taking risks. This could increase
your r isk of a coll is ion.
- Please note the risk of a coll ision increases
when dr iv ing fast, especially through curves
and on slippery or wet roads, and when
IIJ,,
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