2010 AUDI A5 CABRIOLET brake

ffl Adaptive cruise control .._ __ :,..._ ____ _,;__,;_...;.____ ________________________________ _
Adaptive cruise control
Speed and distance control system
Applies to veh icl es : w it h adaptive c ruise contro l
Description
The adaptive cruise control driver assistan ce program is a
combined speed and distance control system .
Fig. 113 Front
bum per : Po sitio n of
ra dar sen sor
Any speed betwee n about 20 mph (30 km/h) and about 95 mph
( 1 50 km/ h) can be set and held with the adaptive cruise control. The
system also regu lates a pre-set distance from the vehicle ahead
w ith in the limits of the system described.
Driv ing c an be more relaxed, particularly o n long tr ips on inter states
or on other highways that a re generally straig ht.
How does it work?
Yo u ca n operate the adaptive c ruise contro l using the leve r o n the
steer ing wheel column:::,
page 119, "H ow is the speed sto red? " and
=:> pag e 121, "How is the distance (time interval) set?".
Driver information
Important info rmation is brought up in the speedometer and in the
instrumen t cluster dis play as the ve hicl e is be ing driven :::,
page 122,
"Driver in format ion ".
What is important for you to know
The adaptive cru ise cont rol is set with system-specified lim its, that is,
a s a driver, yo u will h ave to adju st the speed and dist an ce to the
vehicle ahead in some instances :::,
page 126, "Driver inte rvention
promp t" and =>
page 127, "Sy stem limi ta tions ".
& WARNING
Improper u se of the adaptive cruise control can cause colli sion s,
othe r accidents and serious personal injury.
• Never drive at speeds that are too high for traffic, road and
weather condition s.
• Never follow the vehicle in front so closely that you cannot stop
your vehicle safel y. The adaptive cruise control cannot brake the
vehicle safely when you follow another vehicle too closely . Alway s
remember that the adapti ve cruise control has a braking power
that i s only about 25% of the vehicle 's maximum br aking ability,
the automatic b rak ing 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
traffi c, on winding road s or when road cond ition s are poor (for
e x ample , on ice, gravel, in fog, heavy rain or on wet roads that
in crea se the risk of hydroplaning).
• The rada r sensor' s
vis io n can be reduced by rain, snow and
heavy spray . This can re sult in vehicle s driving ahead being inade­
qu ately detected or, in some circumstances , not detected at all. If
necessary, t ake action yourself! ..,

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& WARNING (co ntinued )
• Always turn off adaptive crui se control when entering turn
lanes, highway ex it lanes and con struction zones or similar situa­
tions because the vehicle will automatically accele rate to the
stored speed .
• Never rest your foot on the accelerator pedal, especially when
the adaptive cruise control is being u sed because doing so will
override the braking function and prevent the brakes from being
applied by the system when it detect s a situation when the brake s
must be applied.
• Alway s remember that the adaptive cruise control has limits -
it does not react when you drive towards an obstacle or something
else on or near the road that is not moving, such as vehicles
stopped in a traffic jam , a stalled or disabled vehicle .
• Always remember that the adaptive cruise control cannot
detect a veh icle th at i s driving towards you in your traffic lane and
that it cannot detect narrow vehicles such as motorcycles and bicy­
cles .
[ i] Tips
• For safety reasons, the stored speed is deleted when the ignition
is turned off.
• The Electronic Stabilization Program (ESP) and the Ant i-Slip Regu ­
la tio n (A SR) c anno t be de activated when the adaptive cruise cont rol
is sw itched on .
If the ESP and the Anti -S lip Regulation (ASR) has been
de activ at ed an d yo u the n switch on the ad apt ive cruise cont rol, the
ESP fu nction w ill also be activated automatically.
• Dam age cau sed by accide nts (e.g. if the vehicle is dam age d whe n
park ing) can affect the rada r sensor settings. This can cause t he
sys tem to malfunc tion or switch off comple tely.
• The radar sensor cover is heated. In w inter conditions, you should
st ill ch eck befor e dr iv in g to make s ure i t is free of ice and s now. If
necessary, clean the area nea r the rada r sensor carefully=>
page 116,
fig. 113 .
Controls and equip ­
ment Safety first
•
To ensure that the radar sensor is not blocked , fore ign objects
(e .g. st ickers, add -on par ts) m ust no t cover the are a ne ar th e radar
sensor=>
page 116, fig . 113 . The area near t he radar sensor must not
be painted, either .
• For Declaration of Compliance to United States FCC and Industry
C an ada regula tions =>
page 34 6. •
App lies to ve hicle s: with adap tiv e crui se contro l
How does adaptive cruise control work?
Vehicles traveling ahead are de tec ted w ith the aid of a
ra dar sens or.
I;= =;. =============== --~
~
l8
Fig. 114 Radar sen sor
mea sureme nt r an ge
A radar sensor is buil t into the front of the vehicle=> fig. 114, which
is subject to ce rtain system limits =>
page 12 7 . Stationary o bjects are
not taken into cons iderat ion. The system is intended to measure the
distance to reflective s urfaces. The system responds after the
dis tance measuremen t has taken place. If a meas urement is not
poss ible, the system does not respond.
Open road
When the road is clear, the adaptive c ruise contro l works like cr uise
cont rol. It ma inta ins a constant target speed specified by the drive r.
~
Vehicle care Technical data

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Driving in traffic
If a vehicle driving ahead is detected, the adaptive cruise control
decelerates (within the limits of the system)=>
page 126, "Driver
intervention prompt" and=>
page 127, "System limitations" to its
speed and after adjusting, tries to mainta in the set distance from the
vehicle ahead. The vehicle may temporarily drive slower than the set
speed wh ile adjusting::::>
& in "Description" on page 116 .
If the vehicle in front accelerates, adaptive cruise control also accel­
erates up to the speed that you have set.
Situation requiring driver intervention
In some situations you will have to use the footbrake to slow the
vehicle down in order to keep a safe distance from vehicle in front of
you o r to avoid a rear-end co llision. In this situation, a symbo l
appears and a warning tone sounds=>
page 126.
Passing another vehicle
If you move into the passing lane and no vehicle is detected ahead,
the adaptive cruise control accelerates to the speed you have set and
maintains it .
Override
You can increase your speed at any time by stepping on the acceler­
ator pedal. After you release the accelerator pedal, the system
adjusts back down to the speed you previously set .
[ i ] Tips
Please note that the amount of acceleration the adaptive cruise
control uses depends on the Distance setting selected. DISTANCE 1
gives you accelerat ion that is dynamic and sporty. DISTANCE 4, on the
other hand, gives more moderate acceleration . For more information
about the time intervals=>
page 121, "H ow is the distance (time
interval) set?".
• Please note that if the adaptive cruise control has begun braking
the vehicle and the driver chooses to brake the vehicle additionally, the brakes may
feel "hard". This is simply due to the pressure build­
up of the initial braking.
• Adaptive cruise contro l is switched off after pressing the foot­
brake. The speed saved up this point can be resumed. To resume the
saved speed, release the brake pedal and pull the control lever
=>
page 120, "Tu rning adaptive cruise control off temporarily". •
Applies to veh icles : wit h ad aptive c ru is e cont rol
Switching the system on and off
Switching the system on
- Pull the lever to position
0 => fig. 115.
Switching the system off
Fig . 115 Control
lever: Switching on
and off
- Press the lever to position@ (latched) .•

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App lies to veh icles : w ith a dapt ive cruise contro l
How is the speed stored?
Fig. 1 16 Contro l
l eve r: S tori ng s pee d
With th e sys te m switched on the speed is stored as follows:
- Drive at the speed you want . The speed must be between
20 and 95 mph (30 and 150 km/h) .
- Press the
!SET I button ~ fig . 116 to store the desired
speed .
After the ( SETI button is released, the current speed is stored and
m ain tained .
The saved speed is now shown in th e LED d isplay in the speedom et e r
by one or two illuminated red light diodes=>
page 123. At the same
time, the saved speed is a lso shown fo r a short time in the Info rma­
tion line~
page 125 .
(I) Tips
For safety reasons, the stored speed is deleted when the ignition is
turned off .•
Con tro ls a nd e quip ­
m en t Vehicle
OP-eration
Applies to vehicles : w ith ada ptive cru ise cont ro l
Changing stored speed
The speed can be changed without touching the acceler ­
ator or brake pedal.
Increasing speed
,... 0
~
ill
Fig . 1 17 Con trol
l e ver: Chan ging spee d
- Press the lever briefly upwards 0 ~ fig. 117 . USA
models : the speed increases by about 2.5 mph . Canada
models : speed will increase by one mark on the speedom­
eter scale .
- Press the lever upwards
0 and hold it . As long as you hold
the control switch down, the light diode display in the
speedometer LED display in the speedometer moves
forward and the speed is increased .
Reducing speed
- Press the lever downwards briefly Q. USA models : the
speed decreases by 2 .5 mph . Canada models: speed will
decrease by one mark on the speedometer scale . _,.
Vehicle care Do-it-yourselt service iTechnical data

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-Press the lever downwards Q and hol d it. As long as you
hold the control switch down, the light diode display in the
speedometer LED display moves backward and the speed
is reduced.
After releasing the control switch, the system regulates the speed to
the value just set.
After each adjustment, the newly-set speed is shown for a short time
in the Information line~
page 125.
[ i ] Tips
You can increase your speed at any time by stepping on the acceler ­
ator pedal. After you release the accelerator pedal, the system
adjusts back down to the speed you previously set. A new desired
speed can be stored at any time by pressing the [SET] button
~ page 119, fig. 116 . •
Applies to vehicles: with adaptive cruise control
Turning adaptive cruise control off
temporarily
In some situations it makes sense to turn adaptive cruise control off temporarily.
Fig. 118 Co ntrol
lever: Turning adaptive
cru ise control off
temporarily
Turning contro l off temporaril y
-To shut off the control with the save function, either
depress the brake pedal, or
- Press the lever in the direction of the arrow @~fi g. 118.
Reactivating control
- To resume the saved speed, release the brake pedal and
press the lever in the direction of the arrow
(D .
& WARNING
Im pro per u se o f the ad apti ve crui se co ntro l ca n ca use co llisions,
o th er acci dents a nd se rious perso na l inju ri es. Ne ver resu me th e
s t o red sp eed if the s pee d i s too high fo r pr eva ilin g road, t ra ffi c o r
weathe r co ndi tions.
lil Tips
When the system is turned off temporarily, the speed stored at the
time is retained. •

Adaptive cruise control -____________ __._ __ _
@ Display in the instrument cluster
In disp lay area @ information from the navi gation system * and the
tr ip computer is displayed in add it ion to informa tion about adaptive
c ruise contro l.
You can sele ct among the differe nt info rmatio n by repeated b rief
taps on the
I RESET! button on the winds hield w iper lever => page 24,
"Operat io n".
© Status indicator
Th e info rmation i n area © is no t disp layed per manently. Infor mat ion
is d isplayed o nly if yo u set or c hange the speed setting, change the
ti me in terva l, when messages a re displayed or if the ad apt ive cru ise
cont rol is turned off for safety reasons. •
Appli es to vehicles : w ith a daptive cruise c on tro l
Speedometer and indicator light display
----
- -
- -
@ ®
Desired speed
- -
--
Fig . 121 I nstru ment
cl uste r: Indicator light
T he desired speed set by the driver is displayed by a red LED in the LED
disp lay in the spee dometer.
If the desi red s peed was set be twee n two lines o n the speedo mete r
using the
[ SET J button, the two closest light diodes will come on
=>
page 122, fig. 120.
Controls and equip ­
ment Safety first
T
he system allows only speeds from 20 to 95 mph (30 to 150 km/ h)
t o be se t. T his spee d range is f aint ly ill um inat ed in t he s pee dome ter
(LED lights) .
Indicator lights (symbols)
• © Open road: The indicator light shows t hat adaptive cruise
co ntrol is a ctive and t hat no objec t is ahe ad of the vehi cle. A sto red
speed req uested is maintained.
• @
Driving in traffic : The indicator l igh t ind icates th at an object
has been detected traveling in front . Your speed is ad justed according
t o the spee d of t he vehicle in front. The adaptive c ruise con trol accel­
erates and bra kes au tomatically w it hin the system's operat io n
parame ters.
• ©
Driver intervention prompt : The red flashing warning light
me ans
Request for driver to as sume control. You as the drive r m ust
slow t he ve hicle w ith the foot brake . The symbo l tells yo u that the
adaptive cruise contro l is not able to s low the vehicle down enough to
keep a enough distance to the vehicle in front o f you. An war ning tone
wi ll also so und when the symbol ap pears. Fo r more informat ion
abou t the driver intervent ion prompt=>
page 126 .
W Tips
• If you use the ac cele rator to go fa ster than the speed of the object
ahead of you, the
driver intervention prompt will not be accompa ­
nied by a war ning signal.
• If the speed you p reviously set is exceeded, the ind icator light in
t he s peedometer w ill swit ch off .•
Vehicle care Technical data

ffl..__A_ d_a_ p,__ t_iv _ e_ c_r _ u _i _ s _e _ c_o _n _ t_ r_ o_ l ___________________________________________ _
Applie s to vehicles : w ith a daptiv e cr uise co ntrol
Display in the instrument cluster
Fig. 12 2 D ispla y in
the instrum ent clu ster
Scroll throug h the available information displays by briefly tapping
the
[ RESE T] button at the end of the windshie ld wiper lever . You can
select information from the tr ip computer, navigation sys tem * or
adaptive cruise contro l.
@ Vehicle symbol
@ Distance
© Status
© Vehicle symbol
Th e veh icle symbol i ndicates w hether the sys tem has de te ct ed an
object traveling in front .
• Vehicle outline : Open road, no vehicle ahead .
• White v ehicl e: A vehicle is detected ahead.
• Red vehicle : Request for driver to ass ume control.
® Distance
Us ing the a rrows and scale, you can detect how far it is to the vehi cle
in front of you.
• Open road : No arrow appears when the ve hicle is o n an o pen road
and there is no ve hicle ahead.
• Driving in t raffic : If a vehicle is detected ahead, the arrow moves
on t he sc ale. The g ree n area represents the distan ce set . When
approaching slow ly, the arrow moves from the
gray zone to the green
zone on the scale .
• Request for driver to as sume control: When approach ing rapidly,
the arrow serves as an early warning signal. If the distance selected is
exceeded or poss ibly no t reached, t he arrow moves in to the
red z o ne
on the scale. In certain driving s ituations , you as the driver wi ll have
t o take action =>
page 126, "Driver in tervent io n prompt".
@ Status
• T he text ACC OFF appea rs in w hite le tters whe n ad apt ive cr uise
control is turned off.
• T he text
ACC AVAILABLE appears in wh ite lette rs when the
system is turned on but no desired speed has been set .
• T he text
OVERRIDE appears in white letters when you exceed the
desired speed by accelerating .
• T he text
DISTANCE! appears in red letters when the interval to a
vehicle traveling ahead is too short and you have to slow your vehicle
add itionally with the foot brake .
• T he te xt messages
DISTANCE 1 to DISTANCE 4 appea r in green
letters to indicate the time i nterval you have set and adaptive cruise
control is in manageme nt mode .
• If the driving program "standard" is replaced by "comfort" or
"dynam ic" usin g the MM I, the above text message is supp lemen ted
by an appropriate prompt, e .g .
DISTANCE 1 DYN . •

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Appli es to ve hicl es: wi th a daptive cruise cont rol
System status indicator
The text messages and symbols shown in this area of the
display are not displayed permanently .
Time intervals (such as e::::, ____ e::::,)
Fig. 12 3 System
status indicator
The different symbols for the time intervals appear if you change the
sett ings => fig. 123 .
Th e text message ... (three white dots) appears if a setting cannot be
implemented with the operating lever. The following are possible
reasons:
• If you pull the control lever towa rds you to resume speed but no
requested speed was set .
• If you push the lever up to increase (or down to reduce) speed
when no speed has been set previously.
• If you push the lever up to increase (or down to reduce) speed and
this speed is outside the range from 20 to 95 mph (Canada mode ls:
30 to 150 km/h) .
ACC functionality Limited
The text message ACC functionality limited appears when the ACC
system does not detect any objects over an extended time period. For
the time being, the d istance to veh icles up ahead is not being
Controls and equip ­
ment Safety first
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 s ide of the road (e .g . guard rails, traff ic s igns,
trees). As soon as a vehicle is detected by the system again, it returns
t o its contro l range and the text message disappears.
The ACC sensor is located in the r ig ht front trim grille
=> page 116,
fig. 113. If there is a loss of operation due to heavy contamination,
this area should cleaned to restore proper operat ion .
ACC not available
The text message ACC not available appears, for examp le, if the
t empe rature of the brakes is excessive. Adaptive cruise control is
temporarily not available. A warning tone sounds as a rem inder .
ACC not available!
The text message ACC not available! appears in the event of a
ma lf unct ion. Adaptive cruise control is turned off. A warn ing tone
sounds as a reminder . Have the system inspected by a qualified deal­
ersh ip.
ACC sensor blocked !
The text message ACC sensor blocked ! appears 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
limited), the system w ill also takes into consideration the outside
temperature and/or the windshield wiper operation .
Th e ACC sensor is d irty or blocked (e.g. leaves, snow).
The sensor should be cleaned to restore prope r sensor funct ion
=> pagell6,fig.113.
Vehicle care Technical data