sensor AUDI A5 COUPE 2012 User Guide

react when you drive towards an obstacle
or something else on or near the road
t h at is not moving, such as vehicles stop­
ped in a traffic jam, a stalled or disabled
vehicle .
- Always remember that the adaptive
cruise control cannot detect a vehicle
that is driving towards you in your traffic lane and that it cannot detect narrow ve­
hicles such as motorcycles and bicycles.
(D Tips
- Fo r safety reasons, the stored speed is
deleted when the ignition is turned off .
- The Electronic Stabilization Program
(ESP) and the Anti-Slip Regulation (ASR)
cannot be deactivated when the adaptive
cruise control is switched on. If the ESP
and the Anti-Slip Regulation (ASR) has been deactivated and you then switch on
the adaptive cruise control, the ESP func­
tion will also be activated automatically.
- Damage caused by accidents (e.g. if the
vehicle is damaged when parking) can af­
fect the radar sensor settings. This can
cause the system to malfunction or
switch off complete ly.
- The radar sensor cover is heated. In win­
ter cond itions, you should still check be­
fore driving to make sure it is free of ice
and snow. If necessary, clean the area
near the radar sensor carefully
9 fig. 110.
-To ensure that the radar sensor is not
blocked, foreign objects (e.g . stickers,
add-on parts) must not cover the area near the radar sensor
9 fig. 110. The
area near the radar sensor must not be painted, either.
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions
~ page 296.
Adaptive cruise control 103
How does adaptive cruise control work?
App lies to veh icles: w ith adaptive cru ise control
Vehicles traveling ahead are detected with
the aid of a radar sensor.
Fig. 111 Radar sensor measu re m ent range
A radar sensor is built into the front of the ve­
hicle
9 fig. 111, which is subject to certain
system limits~
page 112. Stationary objects
are not taken into consideration. The system
is intended to measure the distance to reflec­
tive surfaces. The system responds after the
distance measurement has taken place. If a
measurement is not possible, the system does
not respond .
Open road
When the road is clear, the adaptive cruise
control works like cruise control. It maintains
a constant target speed specified by the driv­
er.
Driving in traffic
If a vehicle driving ahead is detected, the
adaptive c ruise control decelerates (within the
Limits of the system)
9 page 111, Driver in­
tervention prompt
and 9 page 112, System
limitations
to its speed and after adjusting,
tries to maintain the set distance from the ve­
hicle ahead . Th e vehicle may temporarily drive
slower than the set speed while adjusting
~.&. in Description on page 102.
If the vehicle in front accelerates, adaptive
cruise control also accelerates up to the speed
that you have set.
Situation requiring driver intervention
In some situat ions you will have to use the
footbrake to slow the vehicle down in order to .,..

110 Adaptive cruise control
any objects over an extended time period. For
the time being, the distance to vehicles up
ahead is not being controlled. The ACC system
is not switched off, so increased alertness is
required. The following may be reasons for
the text message ACC Functionally limited:
- The ACC sensor is dirty. The ACC system is
not reacting, or is not reacting correctly, to
vehicles traveling ahead .
- It is possible that you are driving on a road
with very light traffic
without anything at
the side of the road (e.g. guard rails, traffic
signs, trees). As soon as a vehicle is detected
by the system again, it returns to its control
range and the text message disappears.
The ACC sensor is located in the right front
trim grille
¢ page 102, fig . 110. If there is a
loss of operation due to heavy contamination,
this area should cleaned to restore proper op­
eration.
ACC not available
The text message ACC not available appears,
for example, if the temperature of the brakes
is excessive . Adaptive cruise control is tempo­
rarily not available. A warning tone sounds as
a reminder.
ACC not available!
The text message ACC not available! appears
in the event of a malfunction. Adaptive cruise
control is turned off. A warning tone sounds
as a reminder. Have the system inspected by a
qualified dealership.
ACC sensor blocked !
The text message ACC sensor blocked ! ap­
pears when the ACC system can no longer
guarantee safe detection of objects. Adaptive
cruise control is turned off. A warning tone
sounds as a reminder.
To decide whether it is necessary to switch off
the ACC (ACC sensor blocked
!) or if it is only a
temporary condition (ACC Functionally limit­
ed), the system will also takes into considera­
tion the outside temperature and/or the wind­
shield wiper operation. The
ACC sensor is dirty or blocked (e.g. leaves,
snow).
The sensor should be cleaned to restore prop­
er sensor function¢
page 102, fig. 110.
Engine speed !
The text message Engine speed ! appears in
vehicles with manual transmission when the driver did not shift up or down in time while
using adaptive cruise control braking or accel­
erating, causing the vehicle to exceed or not
reach the permitted limit speed. This causes
adaptive cruise control to deactivate automat­
ically. A chime sounds as a reminder.
Parking brake!
The text message Parking brake! appears if
emergency braking was manually initiated
with the Electromechanical Parking Brake
(EPB). The adaptive cruise control is turned
off. This is accompanied by a warning tone.
Stabilisation program
The text message Stabilisation program ap­
pears if the Electronic Stabilization Program
(ESP) has intervened. In this case the adaptive
cruise control is automatically turned off. This
is accompanied by a warning tone.
Speed
The set speed in mph (Canada km/h) always
appears when saving or changing the speed in
adaptive cruise control¢
page 104, How is
the speed stored?
and ¢ page 105, Changing
stored speed.
Speed too low
The text message Speed too low appears if
the current speed is too low
to set or to hold
the requested speed.
When setting a desired speed, it must be at
least 20 mph (30 km/h). At speeds below 12
mph (20 km/h), the cruise control is turned
off.
In speeds over 95 mph (150 km/h), the sys-
tem remains active and resumes the speed of .,..

112 Adapti ve crui se control
given to another person, the saved settings
remain as they are.
System limitations
General information
App lies to vehicles: with adaptive cruise control
Some driving situations which affect the func­
tion of the radar sensor are described below.
When driving, the adaptive cru ise control is
governed by physical and system-specified
limits. Also, under certain circumstances, the
ACC system may react unexpectedly or late
from the driver's po int of view. Therefore, al­
ways be attentive and intervene, if necessary:
- when driving around curves¢
page 112
-when vehicles in front are not in line with
your vehicle ¢
page 112
-when other vehicles are changing lanes
r:=>page 113
-when other veh icles are difficult to detect
r:=> page 113.
A WARNING
The radar sensor's vision can be reduced by
rain, snow and heavy spray. This can result
in vehicles driving ahead being inade­
quately d etected or, in some c ircumstan­
ces, not detected at a ll.
If ne cess ary, take
a ction yourself!
When driving around curves
Applies to vehicles: with adaptive cruise control
Fig. 122 Vehicle entering a cu rve
Fig. 123 Ve hicle leav ing a cu rve
Entering a curve
When enter ing a curve, the adaptive cruise
control may react to a vehicle in the next lane
and apply the brakes in yo ur vehicle
r:=> fig. 122. The braking action can be overrid­
den by depressing the accelera tor pedal.
Leaving a curv e
At the exit from very long curves the pred ic­
t ive lane reading can cause the adaptive cruise
control to react to another vehicle in the next
lane and apply the b rakes in your vehicle
r=>fig . 123. The braking action can be over rid­
den by depressi ng the acce le ra tor pedal.
, Vehicles offset to one side
Applies to vehicles: with adaptive cruise control
Fig. 124 Ve hicle traveling a head outside the detect ion
range of the radar sensor
Vehicles trave ling ahead and to one s ide can ­
not be detected by the adaptive cru ise contro l
unt il they are within the detect ion range of
the sensor.

Lane changes by other vehicles
Applies to vehicles: with adaptive cruise control
Fig. 125 A vehicle changes lanes
Vehicles which move into your lane a short
d istance ahead cannot be identified by the
adapt ive cruise control until they are in the ra­
dar sensor's detection range.
Vehicles that are difficult to detect
Applies to vehicles: with a daptive cruise control
Fig . 126 Two -wheeled vehicle driving ahead
Vehicles that are difficult to detect, e.g. two­
wheeled vehicles ahead, vehicles with high ground clearance, protruding load, are fre­
quently detected late or not at all, under
some circumstances.
Adaptive cruise control 113
Stationary vehicles
Applies to vehicles: wit h adaptive cruise control
Fig. 127 Turning and stationary veh icle
Fig. 128 Sheering out and stat ionary vehicle
If a vehicle that has been detected by the ACC
system turns
off or sheers out, and there is a
stationary vehicle ahead of that vehicle, the
ACC system does not respond to the station­
ary veh icle
~ fig. 12 7 and ~ fig. 128.
Audi braking guard
Description
Appl ies to vehicles: wit h adaptive cruise control
Audi braking guard warns you of a threaten­
ing collision with a vehicle ahead.
Fig. 129 D isplay in the instrument cluster

114 Adaptive cruise control
The Audi braking guard is active from a speed
of approx. 20 mph (30 km/h) and works with­in the system limits¢
page 112 even when
the adaptive cruise contro l is deactivated.
A radar sensor is bui lt into the front of the ve ­
hicle
¢ page 102, fig. 110. The system is in­
tended to measure the distance to reflective
surfaces. If a measurement is not possible,
the system does not respond .
When the measurement has taken p lace, the
system can assess a hazardous situation,
when a vehicle ahead suddenly brakes or when
your own vehicle is driving at high speed to­
wards a much slower vehicle ahead . As soon
as the system assumes that a possible colli­
sion with the vehicle ahead can on ly be avo id­
ed by immediate all-out braking or by an
avoiding maneuver, a warning appears.
The system has a pre-set response time to be
able to warn in good t ime . This system re­
sponse time is automat ically reduced if you
accelerate actively, for example to join a high­
way. Braking, transverse acceleration and the
steering angle can lead to a reduced system
response time . The warning is deactivated if
you begin to overtake with fu ll acce leration.
The system draws your attention to two differ­
ent hazardous situations:
Distance
The distance warn ing is issued in the event of
inadequate distance to the veh icle ahead ape­
riod of more than 5 seconds . If the distance is
l ess than 30 feet (9 meters) at 50 mph
(80 km/h) , for example, an optical display is
faded in on the instrument cluster¢
fig. 129.
If the vehicle ahead brakes sharply, a collision
cannot be avoided , even in the case of an im­
mediate response. In this case, increase the
distance to the vehicle ahead.
Speed
If there is a much slower veh icle ahead in your
la ne, or if the vehicle ahead brakes sharply,
the Audi braking guard ca lculates the point
from which a collision can only be avoided by all-out braking or
by an avoiding maneuver. If
a warning does sound, a possib le collision
with the vehicle in front can be avoided
through an evas ive maneuver or by braking .
T he warning is given in two stages:
-Pre-warning: An optical display appears in
the instrument cluster and a warning tone
so unds.
- Acute warning: If you do not respond to the
pre-warn ing, the second stage , the acute
warning, is issued . A brake jolt reminds you
to concentrate on the road again.
Under heavy brea king, brake assist
¢
page 209 also helps you obtain max imum
braking efficiency.
.&_ WARNING ~
Always pay attention to traffic, even when
the Audi braking guard is switched on. You
are a lways responsible for your speed and
the distance between your vehicle and oth·
er vehicles.
-Always keep the lega lly stipulated safety
d istance between your vehicle and the
veh icle ahead • danger of accident!
- The Audi braking guard does not respond
outside the system limits, for example if
you approach a stationary obstacle (end
of a traff ic jam or breakdown vehicle).
- Please observe that the Audi braking
guard is subject to restrictions in narrow
bends due to the field of vision of the ra­
dar senso r. T his may possibly lead to ob­
stacles not being detected.
- The radar sensor's
vision can be reduced
by rain, snow and heavy spray. This can
resu lt in vehicles driving ahead being in­
adequately detected or, in some circum­
stances, not detected at all. Always
watch where yo u are driving .
- Reflecting objects such as e.g . crash bar ­
riers or the entrance to a tunne l may im­
pair the function of the radar sensor .

116 Audi side assist
Audi side assist
Lane change assistant
Description
App lies to vehicles: with si de ass ist
The side assist helps you when changing
lanes .
a::ro
AUDI
.ii 0 0
Fig. 130 Rear bum per: Pos ition of radar senso rs ( not
vis ible on outs ide)
Fig. 131 Signal ligh t on t he outside mirror -driver's
side
Side assist uses radar sensors (not visib le on
outside) ¢
fig. 130 to help the d river check
blind spots, and see what is happening in traf­
fic behind the vehicle
¢ page 117, fig. 133.
Signal lights are built into both outside mir­
rors @¢
fig. 131. The signa l light on the left
outside mirror assists when moving over into
the left lane and the signa l light on the right
outside mirror assists when moving over into
the right lane.
The signal light comes on to te ll you that side
assist has detected a vehicle on that side and
that the position of this other vehicle should
be taken into account if you were to change
lanes . This is called the
informational stage
signal ¢
page 118 . The informational stage signal
is designed so that you notice it only
when you are looking in the outs ide mirror.
When you activate the turn signal and side as­
s ist detects a vehicle in a notable location, the
corresponding signal on the outside mirror
flashes briefly and brightly several times. This
is the
alert stage signal¢ page 118.
Activating and deactivating
Applies to vehicles: wit h side assist
Fig. 132 Driver 's door: S ide ass ist button
Activating
"' Press the¢ fig. 132 button. The indicator
on the button lights up.
Deactivating
"' Press the button again . The indicator light
on the button goes out .
The system works at speeds faster than 19 mph (30 km/h) .
A WARNING
--Improper reliance on the side assist sys-
tem can cause collis ions and serious per­
sonal injury:
- Never rely on ly on side assist when
changing lanes .
- Always check rear view mirrors to make
sure that it is safe to change lanes.
- Side assist cannot detect all vehicles un ­
der all conditions- danger of acc ident!
- Side assist cannot detect vehicles in time
to a lert you when they approach from
behind at very high speed, or fall drop
back very quickly.
11>

-The radar sensor's vision can be reduced
or entirely blocked by rain, snow, and
heavy spray. This can result in side assist
not adequately detecting vehicles or, in
some cases, not detecting them at all.
Always keep an eye on the d irection you
are traveling and the relevant area
around the vehicle.
- Please note that side assist indicates
there are approaching vehicles, o r vehi­
cles in your blind spot, only after your ve ­
hicle has reached a driving speed of at
least 19 mph (30 km/h).
- Side ass ist signal does not work around
tight corners (turning radius less than
328 feet or 100 m).
- Side assist is no replacement for the driv­
er's full attention . The driver alone is re­
sponsible for lane changes and similar
driving maneuvers. A lways keep an eye
on the direction you are traveling and the
relevant area around the vehicle.
(D Note
-To ensure that you do not adversely af­
fect side assist, do not block the area on
the rear bumper where the radar sensors
are located with foreign objects (such as
stickers or bicycle racks).
- Make sure that the signal light on the
outside m irror is not blocked by st ickers
or other items.
@ Tips
- Side assist automatically deactivates if it
detects that the radar sensors are
blocked
9 page 122. The indicator light
on the button goes out .
- The area on the bumper where the radar
sensors are located must consistently re­
main free of snow, ice, and heavy soiling
so that side assist can function properly.
Follow the additional notes on
.:!>page 122 .
-Additional tinting on the front side w in­
dows can make it harder to see and cor­
rectly understand the signal light on the
outside mirror.
Aud i side assist 11 7
-For Declaration of Compliance to United
States FCC and Industry Canada regula­
t ions ¢
page 296.
Sensor detection area
Applies to vehicles: wit h side assist
t
Fig. 133 Schemat ic illustrat ion : Sensor detect ion area
The detection¢ fig. 133 of the radar sensor
detection area is made up of:
- the approach area (light red area)
(D, about
230 feet (70 m) behind the vehicle, and
- the "blind spot" (dark red area)@.
The radar sensors cover the adjacent left and
right lanes. Other lanes are
not covered by the
radar sensors.
(D Tips
Side assist does not measure actual lane
width. The system assumes a fixed lane
width . Detection in the left and right lanes
i s based on this assumed lane width .
When driving on narrow roads o r when
driving to the left or right of the center of
a travel lane, it is possib le that vehicles
will be detected that are
not in the lane
next to the lane you are using
¢page 121.
Operation
App lies to vehicles: wit h side assist
Side assist compares the distance and differ­
ence in speed of detected vehicles with the
speed of your vehicle . Whenever the differ ­
ence in speed and distance is registered as no·
table if you were to change lanes, a signal
light appears on the respective m irror.
Ill-

118 Audi side assist
The signal can light up i f you are passed by a
vehicle or if yo u are passing another vehicle.
If you p ass another vehicle slowly (difference
in speed less than 9 mp h, or 15 km/h), the
signal light will come on as soon as the other
ve hicle is in your blind spot and is detected by
side assist . When the difference in speed is
greater, the signa l light will not come on.
Informational and alert stage signals
App lies to vehicles: with side assist
Side assist has two s ignal stages:
- the informationa l stage signal, and
- the a le rt stage signa l.
Side assist helps you by using the appropriate
signal s tage, depending on whethe r or not
you have activated the turn signal, and thus
have indicated that you are or are not chang­
ing lanes.
Informational stage signal
As long as you have not activated the turn sig­
nal, side assist informs you of detec ted vehi ­
cles that are registered as being in a notable
l ocation if you were to change lanes. Whenev ­
er the detected vehicle's difference in speed
and distance is registered by side assist as no­
table, the signal light on the respective m irror
produces muted illum ination.
The brightness of the informational stage sig­
na l is designed not to be as intense, so that it
does not interfere with your view of the road
when you are driving and have no intention of
changing lanes . When you look in the outside
mirror, you can clearly see the informat ional
stage signa l.
Alert stage signal
When you activate the turn signal, and side
assist has detected a vehicle in a notable loca­
tion on that part icular side, the signal light on
this side mirror flashes bright ly . The repeated
brief and b right flashing of the alert stage
signal reminds you to carefully check traffic to
the rea r in the outside mirror and over you r shou
lder, so that you can safely complete the
lane change
Q .&. in Safety tips on page 122.
(D Tips
The brightness of the s ignal light on the
outside mirrors can be adjusted with the
MMI* ¢page 121.
Driving situation: Fast approaching
vehicles
Applies to vehicles: with side assist
Fig . 134 Side assist: Fast approac hing veh icles
(!) Signal on outside mirror does not light
up
No vehicle was dete cted by the sensors. The
s ignal on the outside mirror does not light up
~ .&. in Safety tips on page 122.
@ Informational stage signal lights up
A fast approach ing vehicle - in the left-hand
l ane fo r example - was detected by the sen­
sors. Although th is vehicle is still fa r away, it
shou ld be taken into account if you were to
change lanes, due to the considerable differ­
ence in speed. The informationa l stage signal
on the outside mirror lights up ¢
page 118. ..,.

122 Audi side assist
whether you drive in the center of your lane or
closer to the edge.
If you d rive in narrow lanes, side assist's de­
tection area may also incl ude other lanes -es­
pecia lly if you tend to drive on the edge of
your lane¢
fig. 139. Under these conditions,
ve hicles can also be detected that are two
lanes away, and side assist then could switch
between the informat ional and warn ing stage
signals .
When dr iv in g in very w ide lanes, vehicles in
the adjacent lane may not be detected be­
cause they are not inside the detection area.
Notes
Messages in instrument cluster display
Applies to vehicles: with side assist
If side assist turns off automatically, the indi­
cator light on the button wi ll go out and you
will see a message in the instrument cluster
d isplay:
Audi side assist not available : sensors
blocked
The s ide assist sensors are built into the rear
bumper on the left and right (not visible on
the outside)
¢page 116, fig. 130. To ensure
that you do not adversely affect the way side
assist funct ions, foreign objects (such as st ick­
e rs or b icycle racks) should not be attached to
the area on the rear bumper where the sen­
sors are located. If side assist functions are
adversely affected, you will see this message
in the instrument cluster display. Remove any ­
thing that may be blocking the sensors .
If no ve hicl e is detected for a longer period of
time while driving , side assist will also switch
off a utomatica lly.
Audi side assist currently not available
If there is a temporary problem (such as the
vehicle's batte ry charge being low), s ide ass ist
cannot be activated temporarily .
Audi side assist: system fault
Have the system checked by an authorized Au­
di dealer or qualified workshop.
Safety tips
Applies to vehicles: with side assist
The side assist detection may be limited when
driving aro und narrow street corners, on hilly
streets, and under poor weather conditions.
It is possible that the radar sensors may a lso
detect other objects, such as high or stag­
gered guardrails.
Side assist does not measure actual lane
width. The system assumes a fixed lane width.
Detection in the left and right lanes is based
on this assumed lane width. When driving on
narrow roads or when driv ing to the left or
right of the center of a trave l lane, it is poss i­
ble that vehicles will be detected that are
not
in the lane next to the lane you are using.
A WARNING
-
- I mproper reliance on the side assist sys-
tem can cause collis ion s and serio us per­
sonal injury:
- Never rely on ly on s ide assist when
changing lanes.
- Always check rear view mirrors to make
sure that it is safe to change lanes.
- Side assist cannot detect all vehicles un­
der all conditions- danger of accident!
- Side assist cannot detect vehicles in time
to a lert you when they approach from
behind at very high speed, or fall drop
back very qu ickly.
- The radar sensor's
vision can be reduced
or entire ly blocked by rain, snow, and
heavy spray. This can result in side assist
not adequately detecting vehicles or, in
some cases, not detecting them at all.
Always keep an eye on the direction you
are traveling and the relevant area
around the vehicle.

-Please note that side assist indicates
there are approaching vehicles, or vehi­
cles in your blind spot, only after your ve­
hicle has reached a driving speed of at
least 19 mph (30 km/h).
- Side assist signal does not work around
tight corners (turning radius less than 328 feet, or 100 m) .
- Side assist is no replacement for the driv­
er's full attention. The driver alone is re­
sponsible for lane changes and similar driving maneuvers. Always keep an eye
on the direction you are traveling and the
relevant area around the vehicle.
{[) Note
To ensure that side assist is not adversely
affected, you should not block the area on
the rear bumper where the radar sensors
are located with foreign objects (such as
with stickers or bicycle racks).
@ Tips
If the positions of the radar sensors have
been changed as a result of a rear end-col­
lision, for instance, have side assist
checked by an authorized Audi dealer for
safety reasons.
Audi side assist 123