2012 AUDI A5 COUPE sensor

90 Warm and cold
If the climate control is operating in cool­
ing mode, a ir flows primarily from the
vents in the center console. To achieve ad­
equate cooling, you should never close
these vents completely.
Economical use of the climate control
system
A ppl ies to vehicles: w it h Deluxe au toma tic clima te co n­
tro l p lus
Economical use of the climate control system
helps save fuel.
When the climate contro l system is working in
coo ling mode, engine performance is reduced
and fuel consumption is affected. To keep the
time the cl imate control system is on as short
as possible, you should do the follow ing:
.. To save fuel, turn off cooling mode by press­
ing the AC button (indicator light goes out) .
.. In add ition, if you open the window or the
panoramic sliding/tilt ing sunroof* while
dr iv ing, turn off cooling mode by pressing
the AC button (indicator light goes out) .
.. If the vehicle is extremely hot due to the
heat of the sun, briefly open doors and win ­
dows.
@ For the sake of the environment
When you save fuel, you reduce em ission s
from the vehicle.
Deluxe automatic
climate control plus -
basic settings
General information
Ap plies to veh icles: w it h Deluxe automat ic climate co n­
tro l p lus
The basic climate control settings can be ad­
justed in the radio or MM!*.
.. Select: Funct ion button ICARI > Control but­
ton
AC .
The follow ing funct ions can be selected: -
Auto reci rculat.
q page 90
- Synchronization
q page 90
Automatic recirculation
App lies to vehicles : with Del uxe a uto mat ic clima te con­
tro l pl us
An air quality sensor detects increased con­
centrations of pollutants in the outside air
and automatically switches to recirculation
mode.
We recommend that you always keep auto­
matic recirculation ON to prevent polluted
outside air from entering the vehicle interior.
If the
air quality sensor located in the climate
control system detects polluted outside air,
the sensor dec ides whether the air pollut io n
can be reduced by the factory-installed pollu­
tant filter or w hether it is necessary to switc h
to recirculation. With heavy concentr ations of
po llutants, the climate control system is
switched automatica lly to recirc ulation mode
and the supply of o utside air is blocked . As
soon as the concentration of pollutants in the
outside air drops, fresh air is supplied to the
vehicle interior aga in .
In the event that the windows fog up during
automatic recircu lation, press the~ button
immediately .
Under certain operating conditions, automatic
recirculation is switched off automatically.
When outside temperatures are below about
SO °F (+10 °C), automatic recirculat ion is lim­
ited to 30 seconds. When outside tempera­
tures are be low about 30 °F (-1 °C), automatic
recirculation is lim ited to 15 seconds .
Synchronization
Applies to veh icles : with Del uxe a uto mat ic climate con ­
tr ol pl us
One climate control setting for all seats.
After Syn chronization is set to On , all of the
subsequent climate control settings (except
for seat heating *) for the driver are transfer-
red to the front passenger. ..,.

102 Adapti ve crui se control
Adaptive cruise control
Speed and distance
control system
Description
Applies to vehicles: with Audi adaptive cruise co ntrol
The adaptive cruise control driver assistance
program is a combined speed and distance
control system.
F ig. 110 Front bumper: Positio n of radar sensor
Any speed between about 20 mph (30 km/h)
and about 95 mph (150 km/h) can be set and
held with the adaptive cruise control. The sys­
tem also regulates a pre -set distance from the
vehicle ahead within the limits of the system described.
Driving can be more relaxed, particularly on
long trips on interstates or on other highways
that a re generally straight .
H ow do es it work?
You can operate the adaptive cruise contro l
using the lever on the steering wheel column
c::> page 104, How is the speed stored? and
c::> page 106, How is the distance (time inter ­
val) set? .
Driver inform ation
Important information is brought up in the
speedometer and in the instrument cluster
d isplay as the vehicle is being driven
c:::, page 107, Driver information .
What is imp orta nt fo r you to kn ow
The adaptive cruise control is set with system­
specified limits, that is, as a driver, you will have to adjust the speed and distance to the vehicle ahead in some instances
c:::,
page 111,
Driver intervention prompt
and c::, page 112,
System limitations.
A WARNING
--
Improper use of the adaptive cruise con­
trol can cause collisions, other accidents
and serious personal injury.
- Never drive at speeds that are too high
for traffic, road and weather conditions.
- Never follow the vehicle in front so close­ ly that you cannot stop your veh icle safe­
ly . The adaptive cruise control cannot
brake the vehicle safely when you follow
another vehicle too closely. Always re­
member that the adaptive cruise control
has a braking powe r that is only about
25% of the veh icle's maximum braking
abi lity, the automatic braking function
cannot bring the vehicle to a stop .
- Never use adaptive cruise control on
roads where you cannot drive safely at a
steady speed, including city, stop-and-go
or heavy traffic, on winding roads or
when road cond it ions are poor (for exam­
p le, on ice, gravel, in fog, heavy rain or
on wet roads that increase the risk of hy­
d rop laning) .
- The radar sensor 's
vision can be reduced
by rain, snow and heavy spray. This can
resu lt in veh icles dr iving ahead be ing in­
adequately detected or, in some circum­
stances, not detected at a ll.
If necessary,
t ake action yourself!
- Always turn off adap tive c ruise control
when en ter ing turn la nes, highway exit
lanes and construction zones or similar
situations beca use the vehicle will a uto­
mat ically acce le rate to the stored speed.
- Never rest your foot on the accelerator pedal, especially when t he adaptive
cruise contro l is being used because do­
ing so will override the braking function
and prevent the brakes from being ap­ plied by the system when it detects a sit­
uation when the brakes must be applied.
- Always remember that the adaptive
cru ise contro l has limits -it does not

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>