sensor AUDI S4 2016 User Guide

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Audi ada pti ve c ruise contr ol and br akin g gu ard
-For safety reasons, do not use adapt ive
cruise contro l when driv ing 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) . Us ing the system under these condi­
t ions could result in a collision .
- Switch adaptive cruise contro l off tempora­
rily when driving in turn ing lanes, on ex­
pressway exits or in const ruc tion zones. This
preven ts the vehicle from accelerating to
the set speed when in these situat ions .
- T he adapt ive cr uise con trol system will no t
br ake by i tself if you pu t your foot on the ac­
celerator peda l. Doing so can override the
speed and distance regulation.
- Whe n approaching stat ionary obje cts such
as stopped traffic, adapt ive cruise control
will not respo nd and braking guard will have
limited function .
- The adaptive cruise control system and
brak ing guard do not react to peop le, ani­
ma ls, objects crossing the road or oncom ing
objects.
- The function of the radar sensor can be af­
fected by reflective objects such as guard
rai ls, t he entrance to a tunnel, heavy rain or
ice.
- Never follow a veh icle so closely that you
cannot stop your vehicle safely . The adap­
t ive cr uise control cannot slow or brake the
vehicle safely when you follow another veh i­
cle too close ly. Always remember th at the
au tom atic b raking function ca nnot br ing the
vehicle to a sudden or emergency stop un­
der these conditions .
- T o preven t unintended operation, always
switch AC C off when i t is not be ing used.
(D Note
The sensor can be disp laced by impacts o r
damage to the bumper, whee l housing and
underbody. That co uld affect the adaptive
cru ise con trol sys tem and braking guard.
Have your a uthorized Audi dea ler or author­
ized Aud i Service Facility check their function.
In curves
Applies to vehicles: with Audi adaptive cruise control
Fig. 113 Ex amp le : d ri ving int o a c urve
When driving into a curve¢ fig. 113 and out of a
curve, the adapt ive cruise control may react to a
vehicle in the next lane and apply the brakes . Yo u
can override or prevent the b raking by press ing
the accelerator pedal b riefly.
Stationary objects
Applies to vehicles: with Audi adaptive cruise control
Fig. 1 14 Example: object c hang ing lanes a nd st ationary
ob ject
The adaptive cruise control system only reacts to
objects that are moving or that the system has
already detected as moving. For example, if ave­
hicle @, which has already been detected by the
adaptive cruise control, turns or changes lanes
and another stat ionary vehicle @ is located in
front of that vehicle, the system will not react to
t h e stationary veh icle.
Vehicles with manual transmission
Applies to vehicles: with Audi adaptive cruise control
The ad aptive cr uise con trol is avai lab le from the
2nd gear through the 6th gear in the customary
RPM. ....
99

Audi adaptive cruise control and braking guard
When the adaptive cruise control is turned on,
you must press the clutch to shift gears (as usu­
al) . When shifting normally or when press ing the
clutch, the adaptive cruise control remains
turned on.
After you have engaged the gear, you do
not
need to press the gas pedal. The adaptive cruise
control accelerates automatically if necessary.
If you press down on the clutch for too long or
shift/coup le improperly , the adaptive cruise con­
trol may turn off automatica lly.
@ Tips
You cannot turn on the adaptive cruise con­
trol during a shifting operation .
Audi adaptive cruise
control
Description
Applies to vehicles: with Audi adaptive cruise control
Fig . 115 De tect ion range
What can Audi adaptive cruise control do?
The adaptive cruise control works in conjunction
with a radar sensor installed in the front of the
veh icle
,::;,page 98, fig. 112, wh ich is subject to
designated system limits
r::;, page 100. Stationary
objects are disregarded.
On open roads with no traffic, adaptive cru ise
control works like a reg ular cruise control sys­
tem. The stored speed is ma inta ined. When ap­
proaching a moving vehicle detected up ahead,
the adaptive cruise cont rol system automatically
slows down to match that vehicle's speed and
then maintains the distance that the driver previ­ ously stored. As soon as the system does not de-
100
tect a ve hicle up ahead, adaptive cruise control
acce lerates back up to the stored speed.
Which functions can be controlled?
When you switch adapt ive cru ise control on, you
can set the current speed as the "control speed"
9 page 100, Switching on and off.
When dr iving, you can stop cruise control
9 page 102 or change the speed r::;, page 101 at
any time .
You can also set the distance to the object ahead
and set the adaptive cruise control driving pro­
gram
9 page 102.
Switching on and off
Applies to vehicles: with Audi adaptive cruise control
Fig. 116 Selector lever : sw it ch ing on/off
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Fig. 117 In strume nt cl uster : Aud i adaptive cru ise con trol Ill-

Audi adaptive cruise control and braking guard
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise contro l
Fig. 122 In strument cluste r: appro ach warning
Braking guard uses a radar sensor. It also func­
tions within the limits of the system when adap­
tive cruise control is switched off .
What can Audi braking guard do?
When detected in time, the system can assess
si tuation s when a veh icle ahead brakes suddenly
or if your own vehicle is traveling at a high speed
and approaching a vehicle up ahead that is mov ­
ing more slowly . Braking guard does not react if
it cannot detect the situat ion.
The system advises you of variou s 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 detected
vehicle up ahead in your lane is moving much
more slowly than you are or if it brakes sharply .
When this warning is given, it may only be pos­
s ib le to avo id a collision by swerving or braking
sharply. The indicator light . and indicator in
the d isplay will warn you about the danger
¢fig. 122. You will also hear an acoustic signal.
If you do not react fast enough or do not react at
a ll to the situation, Braking guard will intervene
by braking and the message
braking guard inter­
vention
will appear.
l) This is no t a vail able in som e coun trie s.
104
- If a collision is imminent , the system will first
provid e an
acute warning by briefly and sharply
app lying the b rakes.
- If you do not react to the acute warning, brak­
ing guard can brake within the limits of the sys ­
tem . This reduces the vehicle speed in the event
of a collision.
- At speeds under 20 mph (30 km/h), the system
can initiate a complete deceleration shortly be­
fore a collision ll.
- If the braking gua rd senses that you are not
braking hard enough when a collision is immi­
nent, it can increase the braking force.
Which functions can be controlled?
You can switch braking guard and the distance/
approach warning on or off in the radio or MMI
¢page 105, Settings in the radio/MM!.
A WARNING
Lack of attent ion can cause collisions, other
accidents and ser ious personal injuries . The
braking guard is an assist system and cannot
prevent a collision by itself . The driver must
always inte rvene. The driver is always respon­
sible for braking at the correct time .
- Always pay close attention to traffic, even
when the braking guard is switched on. Be
ready to intervene and be ready to take
complete control whenever necessary. Al­
ways keep the safe and legal distance be­
tween your vehicle and vehicles up ahead .
- Braking guard works within limits and will
not respond outside the system limits, for
example when approach ing a stopped vehi­
cle or stationary obstacle (end of a traffic
jam or vehicle that has broken down in traf­
fic) .
- Always remember that the radar sensor for
the braking 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.
Moving vehicles up ahead may not be
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promptly detected or may not be detected
at all.
- Reflective surfaces including crash barriers
or tunnel entrances may impair the function
of the radar sensor.
(D Tips
- You can cancel the braking that is initiated
by the system by braking yourse lf, by accel ­
erating noticeably or by swerving.
- Braking guard error messages ~page
105 .
-Keep in mind that braking guard can brake
unexpected ly. Always secure any cargo or
objects that you are transporting to reduce
the risk of damage or injury.
Settings in the radio/MM!
A ppl ies to vehicles: with Audi adaptive cruise co ntro l
... Se lect : I CARI funct ion button > C ar s ystem s*
control button > Driver a ssi st > Audi brak ing
guard .
Or
... Select:
~I C-A-R~I funct ion button > A udi braking
g uard .
S ystem -
Switch Audi braking guard On and Off.
When you sw itch the ignition on, the message
Audi bra king gua rd off appears if the system is
switched off.
Ea rly warn ing -The distance and approach warn ­
ings in the display can be switched
On /Off .
(D Tips
-Your settings are automatically stored and
ass igned to the remote control key being
used at the times the sett ings are made.
- If you restrict or sw itch off the ESC, the
braking guard also sw itches itself off
~ page
178 .
- Switch braking guard off when you are load­
ing the veh icle onto a vehicle ca rr ier, train,
sh ip or other type of transportation . This
can p revent undesired warnings from the
braking gua rd system .
Messages
Applies to vehicles: wi th Aud i adapt ive c ruise control
Braking guard : Off
This dr iver message appears if the system is
tu rned off via the radio/MM I*. O therwise, if the
system is turne d off, the information appears ev­
ery time shortly after t he start o f the trip .
T he driver message a lso appea rs if the system is
not avai lab le due to a ma lfunction o r if the ES C i s
not switched on¢ page
178 . If th is is the case,
the system wi ll not provide warnings about a
possib le collision .
Braking guard : A ctivated
This dr iver message appears if sharp brake pres­
su re was applied due to an acute warning .
•••
Three white dots appear if a setting cannot be se­
l ected with the operating lever. For example, this
happens if you want to raise/lower the speed
even though there was no previously saved
speed .
ACC: Deacti vation
The driver message appears in vehicles wi th ma n­
u al transmission. If the clutch pedal was pressed
down for too long , the adaptive cr uise control
tu rns off. A chime sounds as a reminder.
ACC : Sen sor blocked
This message appears if the senso r view is ob­
structed, for examp le by leaves, snow, heavy
spray or dirt. Clean the sensor¢ page
98,
fig. 112 .
ACC : not availa ble
The driver message appears if there is a malfunc­
tion. The adaptive cruise control turns off . A
chime so unds as a reminder . Have the system
c h ecked by an author ized Audi dealer or au thor­
ized Audi Service Facili ty.
A CC: una vailable
The driver message appears if, for examp le, the
brake temperature is too high. The adapt ive .,.
105

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Audi side assist Side assist
Description
App lies to vehicles: with Audi side assist
Fig. 123 Sensor dete ction rang e
Fig. 124 Display o n the exterio r mirror
Side assist helps you monitor your blind spot and
traffic behind your vehicle . Within the limits of
the system , it warns you about vehicles that are
coming closer or that are traveling with you with­
in sensor range ©
r=;, fig. 123: if a lane change is
classified as critical, the display @ in the exter ior
mirror
r:¢> fig . 124 turns on .
The display in the left exterior mirror provides as­
sistance when making a lane change to the left,
while the d isp lay in the right exterior mirror pro ­
vides assistance when making a lane change to
the right .
Information stage
As long as you do not activate the turn signal,
side assist
informs you about vehicles that are
detected and class ified as critica l. The disp lay in
the respective mirro r turns on , but is dim .
Aud i side assist
The display remains dim intentionally in the in­
formation stage so that your view toward the
front is not disturbed.
Warning stage
If you activate the turn signal , side assist warns
you about vehicles that are detected and classi­
fied as critical. The display in the respect ive mir­
ror blinks bright ly. If this happens, check traffic
by glancing in the rearview mirror and ove r you r
shoulder
c::, .&. in General informa tion on
page 108.
{!) Tips
- You can adjust the brightness of the display
@ c::, page 109.
-Please refer to the instructions for towing a
trailer located in
c::, page 108.
107

Audi side assist
General information
Applies to veh icles: w ith Aud i s ide ass ist
®
@
©
F ig . 125 Driving s ituations
I AU DI
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Fig. 126 Rear of the veh icle: pos it ion of the sensors
Side assist functions at speeds above approxi­
mately 19 mph (30 km/h).
@ Vehicles that are approaching
In certain cases, a vehicle will be classified as
critical for a lane change even if it is still some­
what far away. The faster a veh icle approaches,
the sooner the display in the exterior mirror w il l
turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior mirror if they are classified as critical for
a lane change. All vehicles detected by side assist
108
are indicated by the time they enter your "blind
spot", at the latest .
© Vehicles left behind
If you slow ly pass a vehicle that side assist has
de tected (the diffe rence in speed between the
vehicle and your vehicle is less than 9 mph
(15 km/h)), the display in the exterior mirror
turns on as soon as the vehicle enters your blind
spot .
The display wi ll not turn on if you quickly pass a
vehicle that side assist has detected (the differ­ ence in speed between the vehicle and your vehi­
cle is greater than 9 mph (15 km/h)) .
Functional limitations
The radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width . In certain situations, the dis­
play in the exterior mirror may turn on even
though there is no vehicle located in the area
that is crit ical for a lane change. For example:
- if the lanes are narrow or if your are driving on
the edge of your lane. If this is the case, the
system may have detected the vehicle in anoth­
er lane that is
not adjacent to your current lane.
- if you are driv ing through a curve. Side assist
may react to a vehicle that is one lane over
from the adjacent lane .
- if side assist reacts to other objects (such as
high or displaced guard rails) .
- In poor weather conditions. The side ass ist
functions are limited.
Do not cover the radar sensors
c:> fig. 126 with
stickers, deposits, bicycle wheels or other ob­
j ects, because this w ill affect the function . Do not
use side assist when towing a trailer. For infor­
mation on cleaning, refer to
c:> page 193.
A WARNING
- Always pay attention to traff ic and to the
area around your vehicle. Side assist cannot
replace a driver's attention . The driver alone
is always responsible for lane changes and
-
similar driving maneuvers . IJ>-

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-Improper reliance on the side assist system
can cause collisions and serious personal in­
jury:
- Never rely only on side assist when chang­
ing lanes.
- Always check rear view mirrors to make
sure that it is safe to change lanes.
- Side assist cannot detect all vehicles under
all conditions- danger of accident!
- Please note that side assist indicates there
are approaching vehicles, or vehicles in your
blind spot, only after your vehicle has
reached a driving speed of at least 19 mph
(30 km/h).
- In certain situations, the system may not
function or its function may be limited. For
example:
- if vehicles are approaching or being left
behind very quickly. The display may not
turn on in time.
- in poor weather conditions such as heavy
rain, snow or heavy mist.
- on very wide lanes, in tight curves or if
there is a rise in the road surface. Vehicles
in the adjacent lane may not be detected
because they are outside of the sensor
range.
(D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. This can affect the system. Have
your authorized Audi dealer or authorized
Audi Service Facility check their function.
(D Tips
-If the window glass in the driver's door or
front passenger's door has been tinted , the
display in the exterior mirror may be misin­
terpreted.
- For Declaration of Compliance to United
States FCC and Industry Canada regulations
¢page 261.
Audi side assist
Activating and deactivating
Applies to vehicles: with A udi side ass ist
Fig. 127 Driver 's do or: Sid e assis t button
.,. Press the button ¢ & in General information
on page 108
to switch the system on/ off . The
LED in the button turns on when side assist is
switched on .
Adjusting the display brightness
Applies to vehicles: with Audi side assist
The signal brightness can be set in the radio or
MM!*.
.,. Select: !CAR ! function button> Audi side assist .
.,. Select: I CAR I function button > Car systems*
control button > Driver assist > Audi side as­
sist.
The display brightness adjusts automatically to
the brightness of the surroundings, both in the
information and in the warning stage . In very
dark or very bright surroundings, the display is
already set to the minimum or maximum level by
the automatic adjustment. In such cases, you
may notice no change when adjusting the bright­
ness, or the change may only be noticeable once
the surroundings change.
Adjust the brightness to a level where the display
in the information stage will not disrupt your
view forward. If you change the brightness, the
display in the exterior mirror will briefly show the
brightness level in the information stage. The
brightness of the warning stage is linked to the
brightness in the information stage and is adjust­
ed along with the information stage adjustment.
Ill>
109

Audi side assist
(D Tips
-Si de assist is not active w hile you are mak­
i ng t he a dju stment .
- You r settings are automatic ally store d an d
assi gned to t he remote co ntrol key being
u sed.
Driver messages
App lies to veh icles: w ith Audi side assist
If s ide ass ist switches off by itself, the LED in the
button turns off a nd a message will appear in the
i n str ument cluster d isp lay :
Aud i side assist unavailable: Sensors blocked
T he rada r senso rs ' vision is affe cted . Do not cove r
the area in front of the sensors wit h bike wheels,
sticke rs, dirt o r other objects. Clean the area in
front of the sensors, if necessary
c> page 108,
fig. 126.
Audi side assist : Currently unavailable
S ide assist c an no t be swi tc h ed on tem pora ril y be­
c a use there is a mal func tio n (fo r ex am ple, the
bat tery ch arge level may be too low) .
Audi side assist: System fault!
The system cannot guarantee that it wi ll detect
ve hicles co rrectly and it is swi tched off . The sen ­
sors have bee n disp lace d or are fa ulty . Have the
sys tem chec ked by a n aut hori zed Audi de aler or
a uthor ized Audi Se rvice F acility soon.
Audi side assist: Unavailable when towing
Side assist sw itches off automatica lly when a fac­
tory-installed trailer hitch is connected to the
electr ica l co nnector on the trailer. The re is no
gua rantee the system will sw itch off when usi ng
a retrofi tte d t raile r hi tc h. D o not use s ide ass is t
w hen towing a trailer.
110

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Introduction
Applies to vehicles: with Audi drive select
Drive select provides the possibility to experience
d iff erent types of vehicle settings in one veh icle.
F or instance, using the three
Comfort, 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 vehicle
setup for
Individual* mode can be customized by
you. This makes it possible to combine settings
such as a sporty engine tuning with comfortable
steering.
A WARNING
-
Improper use of the Audi drive select can
cause collisions, other accidents and serious
personal injury .
Description
Applies to vehicles: with Audi drive select
The vehicle setup in each mode depends on the
veh icle's features . However, the engine, auto­
matic transmission* and steering are always in ­
volved.
Engine and automatic transmission*
Depending on the mode, the engine and the au ­
tomatic transm ission respond quicker or in a
more balanced manner to accelerator pedal
movements . In the sporty dynamic mode, the au­
tomatic transmission shifts at higher RPMs.
Steering
The steering adapts in terms of steering effort
and steering ratios. Indirect steer ing that moves
eas ily, like the steering in comfort mode, is best
suited to long drives on a highway. In contrast,
dynamic mode provides sporty, direct steering.
The follow ing applies to vehicles with dynam ic
steer ing*: the steering rat io changes based on
vehicle speed in order to maintain optimum
steer ing effort for the driver at all times. This
Audi drive select
sets the steering to be less sensitive at higher
speeds in order to provide improved vehicle con­
trol. At reduced speeds, however, steering is
more direct in order to keep the steering effort as
minimal as possible when the driver is maneuver­
ing the vehicle. At low and average speeds, dy ­
nam ic steering additionally prov ides more re­
spons ive steering performance .
Adaptive dampers*
The adaptive dampers* use sensors to record in­
formation regarding steering movements, brak­
ing and acceleration operations by the driver,
road surface, driving speed, and load . This makes
it possible to adapt damping to the driving situa­
tion virtua lly in real time. Drive select also makes
it possible to sat isfy the desire for sporty suspen­
sion (Dynamic) and comfortable suspension
(Comfort) without giving up balanced tuning (Au­
to).
Sport differential*
As a component of the all whee l dr ive system
(quattro)
c::> page 182, the sport different ial* dis­
tributes the driving power to the rear axle de­
pending on the situation. The distribution of
power varies depending on the mode selected.
The goal is a high level of ag ility and ability to ac­
celerate on curves. The vehicle is very responsive
to steering.
Audi adaptive cruise control*
The behavior when accelerating can be adjusted
from comfortable 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 select­
ed mode and ranges from subtle to sporty.
(D Tips
- In some models, the maximum vehicle
speed can only be reached in the
Auto and
Dynamic modes.
- For vehicles with an automatic transmis-
sion, se lecting the
Dynamic mode resu lts in ...,
111

Parking System
Parking System
Parking system
Appl ies to veh icles: w ith pa rk in g system
Different pork assist systems may be used for
parking or maneuvering, depending on the vehi­
cle's features.
Parking system (rear )* :
For the parking system (rear), the aco ustic park
assist system is insta lled i n the rear of the vehicle
¢ page 114.
The rear parking assis t sys tem uses ultrason ic
sensors to determine the distance of the veh icle
from a detected obstacle . There are a tota l of
four sensors located on the rear b umpe r (two in
the middle and two on the sides).
Parking system (rear , with rear v iew
c a me ra)*:
For the parking system (rear, with rear view cam ­
era),
the rear acoustic park assist system is inte­
grated in the rear of the ve hicle and the rear v iew
camera is integrated in the rear lid ¢
page 117.
The parking system (rear, with rear view camera)
uses ultrasonic sensors to determine the distance
of the vehicle from a detected obstacle. There are
a total of four sensors located on the rear bump ­
er (two in the middle and two on the sides).
A WARNING -
Make sure the sensors are not covered by
st ic ke rs, depos its o r any othe r obstr uctions as
i t may impa ir the sensor function. For infor­
mation on clean ing, refe r to¢
page 193 .
Rear parking system
Rear acoustic park assist
App lies to veh icles : w ith pa rking system (rea r)
The rear acoustic pork assist warns you of obsta­
cles or objects behind your car.
Description
The rear acous tic p arking assist system de ter ­
mines t he d istance o f the veh icle from an obsta -
114
cle using ultrasonic sensors . There are 4 sensors
in the rear bumper.
The range at whi ch the sensors s tart to measure
i s
abou t:
To the s ide 2 ft (0 .60 m)
Cente r rear 5.2 ft (1.60 m)
Activation
Acoustic parking assist is act ivated automatically
whe n
revers e gear is engaged. A brief tone con­
firms that the system is a ctivated.
Warning tones
D istance warning is give n by warni ng tones wh ich
are generated by the rear signal generator . The
vo lume and the p itch of the warn ing tones can be
adjus ted in the M MI*
¢ page 115.
Rever sing
D istance warning when reversing starts when an
obstacle is detected in t he range of the parking
ass ist system . As the distance dec reases, the
time interva l between the audib le tones becomes
sho rter.
When the distance is less than 1ft (0 .30 m), the
tone becomes cont inuo us. At th is point you
shou ld stop backing up .
Please note that low objects already s ignalled by
a war ning can d isappear from the system's detec ­
tion range and wi ll not cont inue to be s ignalled .
If the distance to an obstacle remains the same,
the volume of the d istance warning is gradually
reduced after about 4 seconds (th is does not ap ­
ply i n the continous to ne range) . Approaching an­
othe r obstacle will result in the distance warn ing
sounding at the normal volume aga in.
Malfunctions in the system
If a warning tone is audible for about five sec­
o nds when you turn on the ignition, there is a
malfunction in the system . Have the prob lem
cor rected by you r authorized Audi dea le r.
Keep the sensors in the rear bumper clean and
free from ice so that the acoustic park ass ist sys -
tem can function properly . .,.