2016 AUDI A4 sensor

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0 ::..:: co ..... ..... can switch rain sensor mod e off and sw itch int er­
mi ttent mode on in the MMI*. Select: I CARlfunc­
tion button
> Ca r sys te m s* control button > Driv·
er a ssist
> Ra in se nsor . In interm ittent mode,
you c an adju st the interva l time u sing the @
switch .
@-Slow wiping
@-Fast wiping
© -Sing le wipe
® -Clean the windshield . To elimina te w ater
droplets, the windshield wiper performs one af­
terwipe operat ion after several seconds while
driving . You can sw itch this function off by mov­
i ng the lever to position ® within
10 seconds of
the afterwipe operat ion. The afte rw ipe funct io n
is reactivated the next t ime the ignit io n is switch­
ed on.
allroad: The rear wiper automatically switches on
when the reverse gear is engaged and the fro nt
windsh ie ld w ipers are on and in operation .
C lean ing the headlights* . The headlight washer
system* ope rates on ly when t he headlights a re
on .
If you move t he leve r to pos ition ®· the
h eadligh ts a re washed in intervals.
@ -allroad: Wipe the rear window . The rear wip­
e r moves about every 4 seconds.
(J) -allroad: Clean the rear window . The number
of wip ing operations depends on how long the
lever is held in posit ion
(J) .
A WARNING
- T he rain senso r is only intended to assist the
dr iver. The driver is still responsib le for
man ua lly switching the wipers on accord ing
to the visibility conditions.
- T he windshie ld may not be treated wi th wa­
ter -repell ing windsh ield coa ting agents . Un­
favorable conditions, s uch as wetness, dark­
ness, low sun, can result in increased glare.
Wiper blade chatter is also possible .
- Properly function ing windshield wiper
blades are required for a clear view and safe
dr iv ing ¢
page 56, Replacing windshield
wiper blades .
Light and Vision
(D Note
-In the case of frost, check whether the
w indshield wiper blades are frozen to the
w indshield. Switching on the w indshield
w ipers can damage the w iper blades!
- Pr ior to using a car wash, the w indshield
w iper system must be sw itched off (lever in
position @). This helps to prevent un inten­
tional switch ing on and damage to the
w indshield wiper system .
(D Tips
-The windshie ld w ipers are switched off
when the ig nit ion is turned off . Act ivate the
w indshield wipers after the ignition is
switched back on by moving the w indshield
w iper lever to a ny position.
- Worn or dirty windshie ld w iper blades resu lt
in st reaking. This can affect the rain sensor*
function. Che ck your w indshield w iper
blades reg ularly.
- T he washer f luid noz zles of the w indshie ld
washer system a re heated at low tempera­
t u res when the ign ition is on .
- When s topping tempo rar ily, (e .g . at a t raf­
fic ligh t) the set speed of the winds hield
wipers is a utomatically reduced by one
speed .
Cleaning windshield wiper blades
Clean the windshie ld wipe r blades when they be­
gin to leave st reaks. Use a soft cloth and gla ss
cleaner to clean the windshield wiper blades.
Front wip er
.,. Place the windshie ld wiper arms in the service
position. R efe r to
c::> page 56 .
.,. Lift the w iper a rm away from the front window.
Rear wiper*
.,. Lift the w iper arm away from the rear w indow .
A WARNING p.----
Dirty windshie ld wiper blades can impair yo ur
v iew. This can lead to accidents .
55

Audi adaptive cruise control and braking guard
Audi adaptive cruise
control and braking
guard
Introduction
Applies to vehicles: with Audi adaptive cruise contro l
The adaptive cruise control system assists the
driver by regulating vehicle speed and helping to
maintain a set distance to the veh icle ahead ,
within the limits of the system. If the system de­
tects a moving vehicle up ahead, adaptive cruise
control can brake and then accelerate your vehi­
cle. This helps to make driving more comfortable
on long highway stretches.
The braking guard system can warn you about an
impending collision and initiate braking maneu­
vers
c::> page 104.
Adaptive cruise control and braking guard have
technical limitations that you must know, so
please read th is section carefully, understand
how the system works and use them properly at
all times.
General information
General information
Applies to veh icles: with Audi adaptive cruise control
Fig. 112 Front of t he veh icle: Posit ion of radar sensor
The area that contains the radar sensor
c::> fig . 112 must never be covered by st ickers or
other objects or obstructed with dirt, insects,
snow or ice that w ill interfere w ith the adaptive
cruise control system and braking guard. For in­
formation on cleaning, refer to
c::> page 193. The
same appl ies for any modifications made in the
front area .
98
The function of the adaptive cruise control sys ­
tem and braking guard is limited under some
condit ions:
- Objects can only be detected when they are
within sensor range
<:!) page 100, fig . 115.
-The system has a limited ability to detect ob­
jects that are a short distance ahead, off to the
side of your vehicle or moving into your lane.
- Some k inds of veh icles are hard to detect; for
example 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 all.
- When driving through curves
c:::> page 99.
- Stationary objects
i::!) page 99 .
& WARNING
-Always pay attention to traffic when adaptive
cruise control is switched on and braking
guard is active. As the driver, you are still re­
sponsible for starting and for maintaining
speed and distance to other objects . Braking
guard is used to assist you . The driver must
always take act ion to avoid a collision . The
driver is always responsible for braking at the
cor rect time.
- Improper use of adaptive cruise contro l can
cause collisions, other accidents and serious
personal injury.
- Never let the comfort and convenience that
adapt ive cr uise control and braking guard
offe r distract you from the need to be alert
to traffic conditions and the need to remain
in full control of your ve hicle at all times,
- Always remember that the adaptive cruise
control and braking guard have limits -they
will not slow the vehicle down or maintain
the set distance when you dr ive towards an
obstacle or something on or near the road
that is not moving, such as vehicles stopped
in a traff ic jam, a stalled or disabled veh icle.
If registered by the radar sensor, veh icles o r
obstacles that are not moving can trigger a
coll ision warning and if confirmed by the
video camera, an acute collision warning. ..,

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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
•
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>-