cruise control AUDI S4 2014 User Guide

102 Audi adaptive cruise control and braking guard
Switching on and off
Applies to vehicles: with Audi adaptive cruise control
Fig. 114 Se lec tor lever: switching on/off
Fig. 115 Instrument clus te r: A udi adap tive c ru ise co n·
trol
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 display inform you about the cur·
rent system status and settings.
Switching Audi adaptive cruise control on
• Pull the lever toward you into position (D
¢fig. 114. ACC standby appears in the in ·
strument cluster display.
Setting the speed and activating
regulation
.. To set the current speed , press the !SE T! but·
ton
¢ page 11, fig . 4. The set speed is shown in
the tachometer @and is also
shown briefly in the display@¢
fig. 115.
Switching Audi adaptive cruise control off
• Push the lever away from you into position
@ until it clicks into place. The message
ACC off appears.
@ Indicator lights
11 · Adaptive cruise control is sw itched on.
No vehicles are detected up ahead. The stored
speed is maintained.
• · A moving vehicle is detected up ahead .
T he adaptive cru ise control system regulates
the speed and distance to the moving vehicle
ahead and accelerates/brakes automatically .
• · When automatic braking is not able to
keep enough distance to a previously detected
moving veh icle up ahead, you must take con·
trol and brake
¢ page 105, Request for driver
intervention.
© Display
If adapt ive cru ise control is not shown in the
display, you can call it up w ith the
I RESET I
button ¢ page 24.
Based on the symbols in the display, you can
determine if the system is maintain ing a d is ·
tance to the vehicle ahead and what that dis­
tance is.
No vehicle· No vehicle ahead was detected .
White vehicle -A vehicle ahead was detected .
Red vehicle -Prompt for the driver to take ac­
tion
,=;, page 105.
Both arrows 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 .
T he green zone on the scale shows the stored
distance. For information on changing the
stored distance, refer tor=;,
page 104 . If the
distance se lected is too close or may soon be·
come too close , the arrows move into the red
zone on the sca le. .,.

Audi adapt ive crui se c ontrol an d bra kin g guard 10 3
A WARNING
Improper use of the adaptive cruise con­
trol can cause collis ions, other accidents
and serious personal injuries.
- Pressing the
ISE TI button whe n driving at
speeds below 20 mph (30 km/h), will au­
tomat ica lly accelerate the veh icle to
20 mph (30 km/h), which is the m ini­
mum speed that can be set.
@ Tips
- If you switch the ignition or the adapt ive
cruise control off, the set speed is erased
from the system memory.
- The elect ronic stabilization control (ESC)
and the anti-slip-regulation (ASR) are au­
tomatically tu rned on when the adaptive
cruise control is turned on. Both systems
cannot be turned off if the adaptive
cruise control is turned on.
Changing the speed
Applies to vehicles: with Audi adaptive cruise co ntrol
~ 0) g
±. .., 0 al
f
• 0
Fig. 116 Se lecto r lever: chang ing t he speed
• To increase or reduce the speed in incre­
me nts ,
tap the lever up or down.
• To i ncrease or reduce the speed quickly,
hold
the lever up or down unt il the red L ED @
reaches the desired speed ¢
page 102,
fig. 115 .
Following any changes, the new sto red speed
will be displayed briefly in the disp lay @
¢page 102, fig . 115. Interrupting c
ruise control
App lies to vehicles: with Aud i adapt ive cruise contro l
Fig. 117 Selecto r lever
Requ irement: adaptive cru ise control must be
switched on ¢
fig. 117 (D.
Ove rriding crui se cont rol
• To acce lerate manually, p ress the accelera­
tor peda l. The message
ACC over ride ap­
pears.
• To resume adaptive cruise contro l, remove
your foot from the gas pedal. The system re­
turns again to the speed that was saved be­
fore .
• You can save a new speed at any time by
pressing the
! SE TI button ¢ page 11, fig. 4.
Canceling cruise cont rol while driv ing
• Move the lever into position @. The mes­
sage
ACC st andby appears . Or
• press the b rake pedal.
• To resume the stored speed, move the lever
into position @.
A WARNING
Never resume the stored speed if the
speed is too high for prevailing road, tra f­
fic or weather condit ions.

104 Audi adaptive cruise control and braking guard
Setting the distance
Applies to vehicles: wit h Aud i adapt ive cru ise co ntrol
Fig. 118 Selector lever: setting the distance
~ Tap the switch to display the current set dis­
tance
¢fig. 118.
~ To increase or reduce the distance by incre­
ments, tap the switch again to the left or
right. The distance between the two vehicles
will change in the instrument cluster dis­
play.
When approaching a moving vehicle up ahead,
the adaptive cruise control system brakes to match that object's speed and then maintains
the stored distance. If the vehicle ahead ac­
celerates, adaptive cruise control will also ac­
celerate up to the stored speed.
The higher the speed, the greater the distance
in yards (meters)¢ ,&.. The
Distance 3 setting
is recommended.
The distances provided are specified values.
Depending on the driving situation and the
how the vehicle ahead is driving, the actual
distance may be more or less than these tar­
get distances.
The various symbols for the time increments
appear briefly in the information line @
c;, page 102, fig. 115 when you change the
settings.
c::::::,_c::::::, ___ Distance 1: This setting corre-
sponds to a distance of 92 feet/28 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1 second.
c::::::, __ c::::::, __ Distance 2: This setting corre­
sponds to a distance of 118 feet/36 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1.3 seconds.
c::::::, ___ c::::::,_ Distance 3: This setting corre-
sponds to a distance of 164 feet/SO meters
when traveling at 62 mph (100 km/h), or a
time interval of 1.8 seconds.
c::::::, ____ c::::::, Distance 4: This setting corre-
sponds to a distance of 210 feet/64 meters
when traveling at 62 mph (100 km/h), or a
time interval of 2.3 seconds.
A WARNING
Following other vehicles too closely in­
creases the risk of collisions and serious
personal injury .
- Setting short distances to the traffic
ahead reduces the time and distance
available to bring your vehicle to a safe
stop and makes it even more necessary
to pay close attention to traffic.
-
-Always obey applicable traffic laws, use
good judgment, and select a safe follow­
ing distance for the traffic, road and
weather conditions.
0) Tips
- Distance 3 is set automatically each time
you switch the ignition on.
- Your standard settings are automatically
stored and assigned to the remote con­
trol key being used.
Setting the driving program
Applies to veh icles: w ith Audi ada ptive c ruise control
Depending on the selected driving program
and distance, driving behavior when accelerat­
ing will vary from dynamic to comfortable.
Setting the driving program for vehicles
without Audi drive select*
~ In the radio/MM!*, select: ICARlfunction
button
> Adaptive cruise control > Driving
prog.
> comfort, standard or dynamic. Or
~ Select: !CAR I function button > Car systems*
control button > Driver assist > Adaptive
cruise control> Driving program*
> Com-
fort, Standard
or Dynamic . ll-

Audi adaptive cruise control and braking guard 105
Setting the driving mode for vehicles with
Audi drive select*
Refer to r=;,poge 114 .
(D Tips
Your settings are automatically stored and
assigned to the remote control key being
used.
Request for driver intervention
Applies to vehicles: with Audi adaptive cruise control
Fig. 119 Instrumen t cl us ter: reques t for drive r inte r·
vention
I n ce rtain situat ions, the system will prompt
you to take action . This cou ld happen, for ex­
ample, if braking by the adaptive cruise con­
trol system is not enough to maintain enough
distance to the vehicle ahead.
The instrument cluster will warn you about
the danger
r=;,fig. 119:
- A red vehicle is pict ured in the disp lay.
- The text
DISTANCE! appears in the status
bar.
- T he red ind icator light . blinks.
- In add ition, a warning tone sounds.
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 120 Instr ument cluster: approach warning
Braking guard uses a radar sensor. It also
functions within the limits of the system
when adapt ive cruise control is switched off.
What can Audi braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes sud­
denly or if your own vehicle is traveling at a
high speed and approaching a vehicle up
ahead that is moving more slowly. Braking
guard does not react if it cannot detect the
s ituation.
The system advises you of various situations:
- The
distance warning is given if you are too
close to the vehicle ahead for a long time. If
the vehicle ahead brakes sharply, you will
not be able to avoid a collision . The indicator
light . in the display comes on .
- The
approach warning is given when a de­
tected vehicle up ahead in your lane is mov­
ing much more slowly than you are or if it
brakes sharply. When thi s war ning is given,
it may on ly be possible to avoid a co llision
by swerving or brak ing sharp ly. The indicator
light . and indicator in the display will
warn you about the danger¢
fig. 120. You
wi ll also hear an acoustic signal.
If you do not react fast enough or do not react
at all to the situation, Braking guard will in­
te rvene by brak ing and the message
braking
guard intervention
wi ll appear.

106 Audi adap tive cruise control and br aking guard
- If a co llision is imminent, the system will
first provide an
acute warning by bri efly and
sharp ly app ly ing the brakes .
- If you do not react to the ac ute warning ,
braking guard can brake within the limits of
the system. This reduces the veh icle speed
in the event of a collision.
- At speeds under 20 mph (30 km/h), the sys ­
tem can in it iate a complete deceleration
s hortly before a collision
l) .
-If the braking guard senses that you are not
braking hard enough when a collision is im­
minent, it can increase the braking force.
Which funct ion s can be contr oll ed ?
You can switch braking guard and the dis­
tance/approach warning on or off in the radio
or MM I c> poge 106, Settings in the radio/
MMI.
A WARNING
Lack of attention can cause col lisions, oth­
er accidents and serious personal injuries.
The braking guard is an assist system and
cannot prevent a collis ion by itself. The
driver m ust always intervene . T he d river is
always responsib le for bra king at the cor­
rect time.
- Always pay close attention to traffic,
even when the brak ing guard is switched
on. Be ready to intervene and be ready to
take complete control whenever necessa­
ry. A lways keep the safe and legal dis­
tance between your vehicle and vehicles
up ahead.
- Braking guard works w ith in limits and
will not respond outs ide the system lim­
its, for example when approaching a
stopped vehicle or stationary obstacle
(end of a traff ic jam or veh icle that has
broken down in traffic).
- Always remember that the radar sensor
for the braking guard works only within
defined detection and range limits that
l ) Th is is not available in some c oun tri es.
may prevent the proper detection of oth­
er vehicles.
- The radar sensor's function and range
can be reduced by rain, snow and heavy
spray. Moving veh icles up ahead may not
be prompt ly detected or may not be de­
tected at all .
- Reflective surfaces including crash barri­
ers or tunne l entrances may impair the
function of the radar sensor .
(D Tips
- You can cancel the braking that is in it iat­
ed by the system by braking yourse lf, by
accelerating not iceably or by swerving .
- Braking guard error messages
c>poge 107.
- Keep in mind that braking guard can brake unexpectedly. Always secure any
cargo or objects that you are transport­
ing to reduce the risk of damage or in­
jury .
Settings in the radio/MMI
App lies to vehicles : wit h Audi ada ptive cr uise contro l
.,. Select: !CARI function button> Car sy ste m s*
contro l but ton > Driv er a ssi st> Audi brak ­
ing guard .
Or
.,. Select: !CAR I function button> Audi b raking
gua rd.
Sys tem -
Switch A udi braking guard On and
Off . When you switch the ignition on, the
message
Audi b raking gu ard off appears if
the system is switch ed off .
Ea rly warnin g -The distance and approach
warnings in the display can be switched
On/
Off .
(D Tips
-Yo ur settings are automatically s tored
and assigned to the remote contro l key
being used at the times the settings are
made.

Audi adaptive cruise control and braking guard 107
-If you restrict or switch off the ESC, the
braking guard also switches itself off
¢page 188.
- Switch braking guard off when you are
loading the vehicle onto a vehicle carrier,
tra in, ship or other type of transporta­
tion. This can prevent undesired warn­ i ngs from the braking guard system.
Messages
App lies to vehicles: with Audi adaptive cruise co ntrol
Braking guard: Off
This driver message appears if the system is
turned off via the radio/MM!*. Otherwise, if
the system is turned off, the information ap­ pears every time shortly after the start of the
tr ip.
The driver message also appears if the system is not avai lab le due to a malfunction or if the
ESC is not switched on¢
page 188. If this is
the case, the system will not provide warnings
about a possible collision.
Braking guard: Activated
This driver message appears if sharp brake
press ure was applied due to an acute warning.
•••
Three wh ite dots appear if a setting cannot be
selected with the operat ing lever . For exam­
p le , this happens if you want to raise/lower
the speed even though there was no previous­
l y saved speed .
ACC: Deactivation
The driver message appears in vehicles with
manual transmission . If the clutch pedal was
pressed down for too long, the adaptive cruise
control turns off . A chime sounds as a rem ind­
er .
ACC: Sensor blocked
This message appears if the sensor view is ob ­
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor <=>
page 99,
fig. 110.
ACC: not available
The driver message appears if there is a mal­
function . The adaptive cruise contro l turns off .
A chime sounds as a reminder. Have the sys ­
tem checked by an authori zed Aud i dea ler or
authorized Aud i Service Fac ility.
ACC: unavailable
The driver message appears if, for example,
the brake temperat ure is too high. The adap­
tive cruise control is temporarily unavailable .
A chime sounds as a reminder.
Engine speed!
This driver message appears in vehicles with
manua l transmission if the driver had not up­
shifted or downs hifted in time while using
adaptive cruise control braking or accelerat­
ing, caus ing the vehicle to exceed or no t reach
the permitted limit speed. The adaptive cruise
control turns off. A chime sounds as a remind­
er .
Shift lever position!
Vehicles with an automat ic transmission: the
driver message appears if the selecto r lever is
shifted to the N position. Th e adaptive cruise
control is no t available while in this position.
Vehicles with manua l transm ission: the driver
message appears for vehicles with manual
transmission if there is no forward gear en­
gaged, meaning if the reverse gear or the 1st
gear is engaged or if the selector leve r is in
the neutral position . The adaptive cr uise con­
trol is not available while in th is position.
Stabilization control (ESC)
This message appears if the electronic stabili­
z ation control ( ESC) is taking action to stab i­
lize the vehicle. The adaptive cruise contro l
turns off. A chime sounds as a reminder .
Speed too low
This message appears if the current speed is
too low
to set or to maintain the desired
speed .
The speed be ing saved must be at least
20 mph (30 km/h). The cruise control is
turned off for speeds lower than 12 mph

108 Audi adaptive cruise control and bra king guard
(20 km/h). The adapt ive cr uise control re ­
mains turned on fo r speeds above 95 mph
(150 km/h) (ove rr ide).
It will stabilize aga in at
95 mph (150 km/h) when the driver takes his
foot
off of the gas peda l.
Parking brake!
The drive r me ssage appe ars when the parking
b rake is activ ate d. Adaptive cr uise con tro l is
turned off . A chime soun ds as a remin der .

Audi drive select Driving settings
Introduction
App lies to vehicles: with Audi drive select
Drive select provides the possibility to experi­
ence diffe rent types of vehicle sett ings in one
vehicle. For instance, using the three
Com­
fort, Auto and Dynamic modes, the driver can
switch from a sporty to a comfortab le driving
mode with the press of a button.
Addit ionally, in vehicles with
MM I*, the vehi ­
cle setup for
Individual* mode can be cus­
tomized by you. This makes it possib le to
combine settings such as a sporty engine tun­
ing with comfortable steering.
A WARNING
Improper use of the Audi drive select can
cause collisions, other acc idents and seri­
ous personal injury.
Description
Applies to vehicles: with Audi drive select
The vehicle setup in each mode depends on
the vehicle's features . However, the engine,
automatic t ransmission* and steering are al­
ways involved.
-
Engine and automatic transmission*
Depending on the mode, the engine and the
automatic transmission respond quicker or in
a more ba lanced manner to acce lerator pedal
movements. In the sporty dynamic mode, the
automatic transmission shifts at higher RPMs .
Steering
The steering adapts in terms of steering effort
and steering ratios . Indirect steer ing that
moves easily, like the steering in comfort
mode , is best su ited to long dr ives on a high­
way. In contrast, dynamic mode prov ides
sporty, di rect steering.
The follow ing applies to vehicles with dynam ic
steer ing*: the steering ratio changes based on
vehicle speed in order to maintain optimum
Audi drive select 113
steering effort for the driver at all times. This
sets the steering to be less sensitive at higher
speeds in order to provide improved vehicle
control. At reduced speeds, however, steering
is more direct in order to keep the steering ef­
fort as minimal as possible when the driver is
maneuveri ng the veh icle . At low and average
speeds, dynamic steering addit iona lly pro­
vides more responsive steering performance.
Adaptive dampers*
The adaptive dampers* use sensors to record
information regarding steering movements,
braking and acceleration operations by the
driver , road surface, driving speed, and load.
T his makes it possible to adapt damp ing to
the d riving situation v irtually i n rea l time.
Drive select also makes it possible to satisfy
the desire for sporty suspension (Dynamic)
and comfortab le suspension (Comfort) with­
out giving up balanced tuning (Auto) .
Sport differential*
As a component of the all whee l dr ive system
(quattro)
~ page 192, the sport differential*
distributes the driving power to the rear axle
depending on the situation . The distribution
of power varies depending on the mode se­ lected. The goal is a high level of agility and
ability to accelerate on curves . The vehicle is
very respons ive to steering .
Audi adaptive cruise control*
The behavior when accelerating can be adjust­
ed from comfortab le to sporty, depending on
the drive select mode. Adaptive cruise control
also responds to the driving behavior of the
vehicle ahead in a more conservative or sporty
manner .
Engine sound*
The sound of the engine is adapted to the se­
lected mode and ranges from subtle to sporty.
0) Tips
-In some models, the maximum vehicle
speed can only be reached in the
Auto
and Dynamic modes.

Systems Comfort
Auto
Dynamic steering*
comfortab le/ind ire ct balanced/direct
Adaptive damper s* comfo rtable balanced
Sport different ial* ba lanced agile
Adaptive cruise control* comfo rtable balanced
Engine sound* subtle subtle/sportya>
a)
Subt le in the dri ving pos ition D and sporty in t he dr iv ing pos ition S.
(D Tips
Your Individual * mode settings are auto­
mat ically stored and assigned to the re­
mote control key being used.
Audi drive select 115
Dynamic
sporty/direct
spo rty
spo rty
spo rty
sporty

Intelligent technology 189
Sedan: ESC levels
Sport mode on ESC/ASR off Sport mode off or
ESC /ASR on
Behavior
The ESC and ASR stabiliza- The stalbilization f unct ion The fu ll sta bilization f unc-
tion funct ions are lim ited is not ava ilable
c:> A . ESC tion of the ESC and ASR is
c:, A . and ASR are sw itched off. available agai n.
Operation Press t he I~ OFF I button Pre ss and h old t he I~ OFFI Press t he i.i, OF FI bu tton
briefly. bu
tton longer than 3 sec -
aga in .
o nd s.
Indicator II turns on. II an d II turn on . II turns off or fl and II
lights tur n off.
Driv er mes· Stabilization control Stabilization control Stabilization control
sages (
ESC) : Sport . Warning! (ESC): off . Warning! Re- (ESC) : On
Restricted stability stricted stability
allroad: ESC level s
Offroad mode on Offroad mode off
Behavior
The ESC and ASR stabilization funct ions T he full stab ilizat ion function of the ESC
are limited
c:> A .
Operation Press the I~ OFFI bu tton.
Indicator II tur ns on.
light s
D river mes- Stabilization control (ESC ): Offroad.
sages Warning! Rest
ricted stability
It is on ly possible to t urn off the AS R up to 30
mph (SO km/h) f or veh icles with front whee l
drive. At about
45 mph (70 km/h) it a utomat i­
cally turns on aga in. It is poss ible to turn off
the ASR at any speed for veh icles with all
wheel dr ive .
A WARNING
-
Yo u should o nly sw itch sport mode/off ­
r oa d m ode on or swi tch E SC/A SR off if your
d rivi ng abili ties a nd ro ad con ditio ns per­
m it .
- T he stabili zation fu nction is limited
w he n sp ort m od e/off road mode is
switched on . The driving w heels could
s p in and t he vehicle c ould swerve, es pe­
c ia lly on s lick or slipp ery roa d sur faces .
- all road: Yo u should o nly sw itc h off roa d
mode on when driving offroad .
- S edan: There is no vehicle sta biliz atio n
w hen ESC/AS R are switched off . and ASR
is availab le aga in.
Press t he
I~ OFF I button again .
II turns off.
Stabilization control (ESC ): On
(D Tips
ESC/ASR cannot be switched off o r sp o rt
mode/offroad mode ca nnot be switched
on when adaptive cruise control * is switch­
ed o n.
Braking
What affects braking effic iency?
New brake pads
D uring the first 250 mi les (4 00 km), new
brake pads do not possess the ir full brak ing
effect, they have t o be "broken in" first
c:> A .
You can compensate for this slightly reduce d
braking powe r by pushing har der on the brake
p edal. Avo id heavy b ra ki ng loa ds dur ing t he
break-i n pe riod.
•
•