light AUDI A8 2015 Repair Manual

Audi adaptive cruise control and braking guard 95
tachometer @and is also shown briefly in
thedisplay @c::>fig.101.
.. You must also press the brake pedal when
the vehicle is stopped.
Switching adaptive cruise control off
.. Push the lever away from you into position
@ until it clicks into place. The message
ACC off appears.
@ Indicator lights
II-Adaptive cru ise contro l is switched on.
No vehicles are detec ted up ahead. The stored
speed is ma intained.
• -A moving vehicle is detected up ahead.
The adaptive cruise control system regulates
the speed and distance to the moving vehicle
ahead and acce lerates/brakes automatical ly.
fit -Adaptive cruise contro l is switched on. A
mov ing vehicle up ahead was detected. Your
vehicle remains stopped.
• -When automatic brak ing is not able to
keep enough distance to a previously detected
moving vehicle up ahead, you must take con­
trol and brake
c::> page 97, Prompt for driver
intervention.
© Display
If adaptive cruise control is not shown in the
d isp lay, you can call it up with the multifunc­
tion steering wheel buttons c::>
page 23.
Based on the symbols in the d isplay, you can
determine if the system is maintaining a dis­
tance to the vehicle ahead and what that d is­
tance is.
No vehicle · No veh icle ahead was detected .
White vehicle -A vehicle ahead was detected.
Red vehicle -Prompt for the driver to take ac­
tion
<=:> page 97.
Both
arrow s 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 .
"' ,....,
"' ,....,
The green zone on the scale shows the stored
distance. For information on changing the
stored distance, refer to
c::> page 96. If the
distance selected is too close or may soon be­
come too close, the arrows move into the red
zone on the sca le .
A WARNING
Improper use of the adaptive cruise con­
trol can cause collisions, other accidents
and serious personal injur ies .
- Pressing the
!SET ! button when driv ing at
speeds below 20 mph (30 km/h), will au­
tomatically accelerate the vehicle to 20
mph (30 km/h), which is the minimum
speed that can be set.
(D Tips
-If you switch the ignit ion or the adaptive
cruise control off, the set speed is erased
from the system memory.
- You cannot switch the Electronic Stabili­
zation Control (ESC) to the SPORT mode
when adaptive cruise control is switched
on.
Changing the speed
Applies to vehicles: with Aud i adapt ive crui se control
0
f
• 0
Fig. 102 Selector lever: ch ang ing the speed
.. To increase or reduce the speed in incre­
ments,
tap the lever up or down.
-0:, N 0 ± ... a)
.. To increase or reduce the speed quickly, hold
the lever up or down until the red LED @
reaches the desired speed
c::> page 94,
fig.101. ~

Audi adaptive cruise control and braking guard 97
When approaching a moving vehicl e up ahead,
the adaptive cruise contro l system automati­
cally brakes to match that object's speed and
then maintains the stored distance.
If the ve­
hicle ahead accelerates, adaptive cruise con­
trol will also accelerate up to the stored
speed .
The higher the speed, the greater the distance
in yards (meters) ¢.&. . The
Distance 3 setting
is recommended .
The distances prov ided 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 @
¢
page 94, fig . 101 when you change the set ­
tings .
,::::::,_,::::::, ___ 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.
,::::::, __ ,::::::, __ 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 .
,::::::, ___ ,::::::,_ 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 .
,::::::, __ __ ,::::::, 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 injur y.
- 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 d istance for the traff ic, road and
weather conditions .
(D 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.
Selecting the driving mode
Applies to vehicles: with Audi adaptive cruise control
.. Select the desired driving mode in dr ive se­
lect <=;>
page 108.
(D Tips
Your settings are automat ically stored and
assigned to the remote control key being
used.
Prompt for dr iver intervention
Applies to vehicles: with Audi adaptive cruise contro l
Fig. 105 Instrument cluste r: request fo r dr ive r inter­
vent ion
In certain situations, the system will prompt
you to take action . This could happen, for ex­
amp le, if braking by the adaptive cruise con­
trol system is not enough to maintain enough
distance to the veh icle ahead .
The indicator light . and the symbol in the
display will warn you about the situation
<=;> fig. 105. You will also hear an acoustic sig-
nal. ..,.

98 Audi adaptive cruise control and braking guard
-Press the brake peda l to slow your vehicle
down.
Audi braking guard
Description
Ap plies to vehicles: with Audi adaptive cruise co ntrol
Fig. 106 Instrume nt cluste r: approac h warn ing
Braking guard uses radar sensors and a video
camera. It also functions within the limits of
the system when adapt ive cruise control is
switched off .
What can 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
h igh speed and approaching a vehicle up
ahead that is moving more slowly . Brak ing
guard does not react if it cannot detect the
situation.
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 collis ion. 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
i ng much more slowly than you are or if it
brakes sharply . When this wa rning is given,
it may only be possible to avoid a collision
by swerving or braking sharply. Th e indicator
li ght . and indicator in the display will
warn you about the danger~
fig. 106. You
will also hear an acoustic signa l.
ll This is not av ailable in some coun tri es.
If you do not react fast enough or do not react
at all to the situation, braking guard wi ll inter·
vene by braking and the message
braking
guard intervention
will appear.
- If a collision is imminent, the system wi ll
first provide an
acute warning by briefly and
sharply applying the brakes .
- If you do not react to the acute warning,
braking guard can brake wit h increas ing
force w ithin the limits of the system . This
reduces the vehicle speed in the event of a
collision.
- The system can initiate max imum brak ing
shortly before a collision
1> . Full deceleration
at high speeds occurs only in vehicles with
adapt ive cr uise control and side assist (p re
sense plus) .
- If the brak ing guard senses that you are not
braking hard enough when a collision is im·
minent, it can increase the brak ing force.
- The pre sense functions also engage when a
col lision is imminent ~
page 194.
Which functions can be controlled?
You can switch braking guard and the dis­
tance/approach warn ing on or off in the MMI
~ page 99, Settings in the MMI.
A WARNING
-
Lack of attention can cause collisions, oth-
er accidents and serious personal injuries .
The braking guard is an assist system and
ca nnot prevent a collision by itself. The
driver must always intervene. The driver is
a lways respons ible for braking at the cor­
rect time.
- Always pay close attention to traffic,
even when the braking guard is switched
on. Be ready to intervene and be ready to
take comp lete control whenever necessa­
ry. Always keep the safe and legal dis­
tance between your vehicle and veh icles
up ahead .
- Braking guard works within limits and
will not respond outside the system

,....,
N ,....,
N
0 J:
'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Audi active Lane assist
Active Lane assist
Description
Applies to vehicles: with active lane assist
Active lane assist helps you keep your vehicle
in your lane.
Active lane assist detects lane marker lines
within the limits of the system using a camera in the windshield . If you are approaching a de­
tected lane marker line and it appears likely
that you w ill leave the lane, the system will
warn you by means of corrective steer ing . T he
driver can over ride the cor re ct ive steer ing at
any time. If the veh icle crosses a line, the d riv­
er is also warned by a light
vibration in the
steering whee l. The vibration warning must
be switched on in the MMI for this to happen.
Active lane ass ist is operable when the line
marking the lane is detected on at least one
side of the vehicle .
The system is designed for driv ing on free ­
ways and expanded highways and thus works only at speeds of 40 mph (65 km/h) or more .
Applies to vehicles with side assist* : If you ac­
tivate your turn s ignal when active lane assist
is ready and when activated side assist has
classified a lane change as crit ica l because of
vehicles traveling alongside you or comi ng
closer, there will be noticeable correct ive
steer ing just before you leave the lane . This is
done to try to keep your veh icle in the lane.
Applies to vehicles w ithout s ide ass ist*: when
the system is ready, it does not warn you if
you act ivate your turn signa l before driving
across a lane marker line . In this case, it as­
sume s that yo u are ch ang ing lanes intent ion­
a lly.
I f the vehicle is also equipped with Audi adap­
tive cruise cont ro l*, the co rrec tive steering
will be mo re specific in rega rd to the driving
situation. In addition to the lane marker lines,
the system can a lso take into account other
objects such as guard rails . If they are detect­
ed in close proximity to the veh ic le, Audi ac-
Audi acti ve lane a ssis t 10 1
tive lane assist he lps prevent the vehicle from
driving too close to them. There is a lso pass­
ing ass istance . The system does not provide
any correct ive steering if it detects that you
are passing another vehicle.
A WARNING
- The system warns the drive r that the ve­
hicle is leaving the lane using co rrect ive
s teer ing . The d river is always r esponsible
for keeping the vehicle withi n the lane.
- The system can assist the dr iver in keep­
i n g the vehicle in the lane, but it does
not steer by itself. A lway s keep yo ur
h a nds on the steering wheel.
- Cor rective s teer ing may not occur in cer­
tain sit uat ions, such as dur ing heavy
bra king.
- Th e camera does not recogni ze all lane
marker lines. Cor rective s teer ing ca n only
take p lace on the side of the vehi cle
where lane marke r lines are detected.
- Othe r road str uctures o r objects co uld
possibly be identified unintentiona lly as
lane ma rker lines . As a res ult, corrective
steering may be unexpected or may not
occ ur.
- The camera view can be restricted, for
examp le by vehicles driving ahead or by
ra in, snow, heavy spray or light shining
into the camera . Th is can result in act ive
lane assis t not detecti ng the lane marke r
lines or detect ing them inco rrectly.
- Unde r ce rtain conditions such as ruts in
the road, a banked roadway or cross­
winds, the co rrective stee ring alone may
not be enough to keep the vehicle in the
lane.
- For safety reasons, active lane ass ist
m ust not be u sed w hen the re a re poor
road and/or weat her condi tions such as
slippe ry roads, fog, grave l, heavy rain,
snow an d the potential for hydroplaning .
Using active lane assist under these con­
ditions may increase the risk of a crash.

102 Audi active lane assist
Activating and deactivating
Applies to vehicles: with active lane assist
-
I
Fig. 107 Turn signal lever: Act ive lan e ass ist button
Fig. 108 Windshield: Active lane assist camera viewin g
win dow
~ Press the ¢ fig. 10 7 button to activate or
deactivate the system . The indicator light
• or. in the instrument cluster will illu­
minate or go out.
Instrument cluster indicator light
• Ready: The indicator light shows that the
system is ready to use . The system can now
warn you if you are about to cross a known
lane marker line .
• Not ready: The ind icator light shows that
the system is turned on but unable to send a
warning . This can be due to the following :
- There is no lane marker line .
- The relevant lane marker lines are not de-
tected (for example, markings in a construc­
tion zone or because they are obstructed by
snow, dirt, water or backlight ing).
- The vehicle 's speed is below the speed need ­
ed to activate it, which is about 40 mph (65
km/h) .
- The lane is narrower than about 8 ft . (2 .5 m)
or wider than 15 ft (4 .5 m).
- The curve is too sharp . - The driver's hands are not on the steering
wheel.
(D Tips
Make sure the camera's field of view
¢
fig. 108 is not obstructed by stickers,
deposits or anything else. For information
on cleaning, refer to
¢ page 214 .
Active lane assist display in the
instrument cluster
Applies to vehicles: wit h active lane assist
Fig. 109 D isp lay : Act iv e lane ass ist is swi tc h ed on a nd
is wa rnin g
Fig. 110 Instrumen t cl uster: Active lane as sis t is
s witch ed o n but not re ad y to provid e wa rnin gs
You can call up the active lane assist display
using the buttons in the multifunction steer­
ing wheel ¢
pag e 23.
When active lane assist is switched on, the
system indicates which lines are detected by
displaying solid lines on the left and/or right
side of your vehicle :
ll>

,....,
N ,....,
N
0 J:
'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
White Active l ane assist is sw itched on
line(s) and ready to p rov ide warnings
on the side that is ind icated
¢ fig. 109 .
Red line Act ive lane assist is warning you
(left or that you are about to leave your
right) lane
¢ fig . 109. In addition, the
steeri ng wheel vibrates s light ly.
Gray Act ive l ane assist is switched on
line(s) but is not ready to provide warn-
ings
¢ fig . 110.
Mes sages in the instrument clu ster
display
When the active lane ass ist turns off automat ­
ically, the i nstrument cluster ind icator goes
out and one of the fo llow ing messages ap­
pears on the display :
Audi active lane a ssist : Curr ently un availa­
bl e. No camera view
This message appears if the camera is no lon­
ger funct ional after the system has cont inous­
ly failed to detect the lane markings . This
could happen if :
- The camera field of view¢
page 102,
fig. 108 is dirty or covered in ice. Clean the
area on the w indshield .
- The camera field of view is fogged over. Wait
until the fog has cleared before switching
active lane assist on .
- The system has been unable to detect the
lanes for an extended period of time due to
road cond it ions . Switch active lane ass ist
back on when the lines are more visible .
Audi active lane a ssist : Currently un available
A temporary ma lf u nction is preventing lane
assist from operating. Try sw itching active
lane assist on again later.
Audi acti ve lane a ssist : S ys tem fault!
Drive to you r autho rized Aud i dea le r soon to
h ave the ma lfunction co rrec ted.
Audi active lane a ssis t: Pl ea se take over
s te ering
Audi acti ve lane a ssis t 103
This message appears if yo u do not s teer the
vehicle yourself . If this is the case, active lane
ass ist does not switch off, b ut it does sw itch
to the "not ready" stat us. The system can help
you keep the vehicle in the lane. However it is
your own responsibility to steer and control
t h e ve hicle .
Setting the steering wheel vibration
Applies to veh icles: w ith active la n e assist
11> Select: !CAR ! function button> (Car )* sys­
tem s
control button > Driver a ssis t > Aud i
a ctive lan e as sis t.
You can switch the vibrat ing warn ing in t he
stee ring wheel
o n or off .
(D Tips
Your setting is a utomat ically stored and
assigned to the remote control key being
used.

108 Audi drive select
Audi drive select
Driving settings
Introduction
Audi drive select makes it possible to experi­
ence different types of vehicle settings in one
vehicle. The driver can select three
Comfort,
Auto
and Dynamic modes in the MMI to
switch between a sporty and a comfortable
driving mode.
You can a lso adjust the setting according to
your preferences in the
individual mode. For
example, you can combine settings such as a
sporty engine tuning with comfortab le steer­
ing.
A WARNING
Improper use of the Audi drive select can
cause collisions, other accidents and seri­
ous personal injury.
Description
The vehicle setup in each mode depends on
the vehicle's features. The engine, transmis­
sion, steering, reversible safety belt tension­
ers and adaptive air suspension are always in­
volved.
Engine and transmission
Depending on the mode, the engine and the
transmission respond quicker or in a more bal­
anced manner to acce le rator pedal move­
ments. In the sporty dynamic mode, the
transmission shifts at higher RPMs.
Air suspension
The adaptive air suspension/adaptive air sus­
pension sport*
(Ai r suspension in the MMI) is
an electronically control led air suspension and
damping system. They are adjusted depend­
ing on the selected driving mode, the driver's
steering, braking and acceleration input and
the road surface, vehicle speed and load. A
sporty setting is generally used in vehicles
with adaptive air suspension sport*. The
vehicle clearance varies depending on the
selected mode and the speed .
The highway setting is activated automatically
when you drive above 75 mph (120 km/h) for
more than
30 seconds in the auto or dynamic
mode. The ground clearance is increased auto­
matically if the speed drops below
44 mph
(70 km/h) for more than 120 seconds.
Steering
The steering adapts in terms of steering effort
and steering ratios . Indirect steering that
moves easily, like the steering in comfort
mode, is best suited to long drives on a high­
way. In contrast, dynamic mode provides
sporty, direct steering .
The following applies to vehicles with dynamic
steering* : the steering ratio changes based on
vehicle speed in order to maintain optimum
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, steer ing
is more direct in order to keep the steering ef­
fort as minimal as poss ible when the driver is
maneuvering the vehicle. At low and average
speeds, dynamic steering additionally pro ­
vides more responsive steering performance.
Sport differential*
As a component of the all whee l dr ive system
(quattro)
r:!> page 202, the Sport differential*
distributes the driving power to the rear axle
depending on the situation . The distribution
of power varies depending on the selected
mode, from balanced (comfort) to agile (dy­
namic). The goal is a high level of agility and
ability to accelerate on curves . The vehicle is
very respons ive to steering .
Curve light*
The curve light adapts to driving on curves.
The pivoting action and the lighting are also adapted to the mode.
Adaptive cruise control*
The behavior when accelerating can be adjust­
ed from comfortab le to sporty, depending on ..,.

110 Audi drive select
Adjusting the Individual mode
You can adjust the vehicle settings to your personal preferences .
• Se lect : I CAR ! function button > Set individu­
al
control button. You can now adjust the in­
dividual systems.
The
individual driving mode will automatical­
ly be activated when you have finished config­
uring the settings .
Systems Comfort
Engine
and Transmission balanced
Air suspension comfortable
Steering comfortable The equipment
in your vehicle will determine
which settings you can adjust. The following
table provides an overview of the characteris­
tics of each driving mode.
Auto Dynamic
balanced sporty
balanced sporty
balanced sporty
Dynamic steering* comfortable/indirect balanced/direct sporty/direct
Sport differential * balanced agile sporty
Curve light* comfortable balanced sporty
Belt
tensioner Standard Standard Deployment time
adapted
Adaptive cruise control* comfortable
balanced sporty
Engine
sound* subtle subtle/sportya> sporty
a) Subt le in th e d riv ing posi tion D an d sp or ty in the driving pos itio n S
(D Tips
Your individual mode settings are auto­
matically stored and assigned to the re­
mote control key being used.
Raising/lowering the
vehicle
Raising the vehicle
You can raise your vehicle temporarily, for ex­
ample to drive over a tall curb .
• Se lect the following in the MMI:
I CAR I func­
tion button
> Raise control button.
• Wait for the arrows in the display to stop
blinking and the vehicle to reach its final po­
sition .
Lowering the vehicle
• To lower the veh icle, select the following in
the MMI:
ICARI function button > Lower con­
tro l button. •
Wait for the arrows in the display to stop
blinking and the vehicle to lower comp lete­
ly.
0 Note
- Remember that your vehicle is not suita­
ble for driv in g offroad even when it is
raised. There is not enough ground clear­
ance.
- If the vehicle is raised, it will lower auto­
matically when driving 62 mph (100 km/
h) or faster .
Driver messages
Air suspension: vehicle currently too low.
Level control running
Air suspension: vehicle currently too high.
Level control running
The driver message switches off when the lev­
el control process is complete .

Night vision assistant
Night vision assistant
with pedestrian and
wild animal detection
Description
App lies to vehicles: with night visio n assistant
Night vision assistant with pedestrian and
wild animal detection assists you in darkness
by using an infrared camera to monitor the
area in front of your vehicle, within the lim its
of the system.
It can display objects up to ap­
proximately 1000 feet (300 meters) away.
The heat image detected by the camera is
shown in the instrument cluster display.
Warm areas appear lighter and cold areas ap­ pear darker.
Pedestrian and wild animal detection
Applies to vehicles: with nig ht visio n assistant
Fig . 117 Display: yellow pedestrian marking
Fig. 118 Display: symbol when infrared image is not
visible
Within the limits of the system, night vision
assistant can detect pedestrians and wild ani­
mals that are within the detection range be­
tween approximately 32 feet (10 meters) and
295 feet (90 meters) in front of the vehicle .
Night vision assistant 111
When it is dark outside and the headlights are
switched on, detected pedestrians and wild
animals are marked in ye llow
¢ fig. 117with­
in the limits of the system
¢page 112. Wild
animal detection is not active in built-up
areas. The system only detects large wild ani­
mals such as deer .
(!) Tips
-If another display such as navigation re­
places the image from the night vis ion
assistant, the~,, symbol appears in the
tab
¢fig. 118. You can call up night vi­
sion assistant using the buttons on the
mu ltifunc tion steering wheel
r::;, page 24.
Pedestrian and wild animal warning
App lies to vehicles: wi th night vision assistan t
Fig. 119 Instrument cluste r: @ pedest rian warning,
@ wild animal warning
Fig. 120 Instrument cluster : @ pedestr ian warning/
® wild animal warning when the night vision assistant
im age is not selected in th e instrument cluster display
Instrument cluster display/Head-up
Display*
If pedestrians or wild animals are detected in
an area in front of your vehicle that is consid­
ered critical, the system will attempt to draw
your attention to this by:
111>--

112 Night visi on assis tant
-Mark ing pedestrians or wi ld an imals in red
in the instrument cluster and turning on the
. or. symbo l¢ fig.119.
-Sounding a warning tone .
The area regarded as cr it ical depends on the
vehicle speed and steering angle . Pedestrian
and wild anima l warning a ims to increase you r
attention.
I f the n ight vision assistant image is replaced
by another d isplay such as the t rip computer,
the red indicator lamp . or.
c::;, fig . 120
will turn on when there is a pedestrian or wild
animal warning .
I f the Head-up Display* is swi tched on and the
night vision assistant disp lay content is acti­
vated, the display . or. appears in the
Head-up Display *.
General information
A ppl ies to vehicles : w ith nigh t visio n ass istant
F ig . 12 1 Fron t of the vehicle: night v ision a ssistant
camera
The follow ing s ituations may affect the func­
tion of the night vision assistant system:
- poor visibility such as snow , rain, fog or
heavy road spray
- dirty lens on the night vision assistant cam -
era
Make sure the night v is ion assistan t camera
c::;, fig . 121 is not covered by stickers, deposits
or any other obstructions beca use that can
prevent the camera from working properly.
For information on cleaning the lens, refer to
c::;,page214.
Pedestrian and wild animal detection depends
on the difference in temperature between the person/wild anima
l and the backg round area.
Pedestrians/w ild an imals may not be detected
if the d ifference is too sma ll. Pedestrian and
wild animal marking are deactivated at tem­
peratures above approximately 77 °F
(25 °()
and when it is light outside. When the night
v ision assistant image is selected in the in­
strument cluster d isplay, the
II symbo l ap·
pears in the upper right.
_&. WARNING
Night vision ass ista nt has limits and ca n­
not always detect pedestr ians . Always pay
close attention to t raffic and the area
a round your veh icle even when nig ht vision
assistant is switched on.
- Night vision assistant can only warn
about people and wild animals located
w ith in the visual range of the infrared
camera. The visua l range corresponds to
the image in the instrument cluster dis·
p lay.
- Night vision assistant may not detect
people or w ild an imals and mark them if
- they a re not in an up right po siti on, for
example if they are si tting or lying
down and/or
- the silhouette in the disp lay is incom­
plete or interrupted, for examp le be­
cause a perso n is partially covered by a
parked vehicle or a wild anima l is parti·
a lly covered by tall grass. This increases
the risk of a collision.
- Never try to swerve to avoid anima ls if
this will put you or other drivers at risk.
This could increase t he risk of a collision.
(D Tips
- Even though the shape and warmth radi·
ated by each object detected is evaluat·
ed, the system does have limitations and
it can give incorrect warnings .
- For technical reasons, the image pauses
in split second intervals.
-