2015 AUDI A3 CABRIOLET brake

82 Driving
Electromechanical
parking brake
Operating
The electromechanical parking brake replaces
the hand brake.
Fig. 82 Ce nter conso le: Park ing brake
~ Pull the switch@~ fig. 82 to set the park­
ing brake . The . (USA models)/ . (Cana­
da models) indicator lights in the button
and in the instrument cluster display turn
on .
~ To release the parking brake, press the brake
or acce le rator pedal while the ignit ion is
switched on and press the button @at the
same time. The. (USA models)
I. (Can­
ada models) indicator lights in the button
and in the display turn off .
Your veh icle is eq uipped with an electrome­
chanical parking brake. The parking brake is
designed to prevent the vehicle from rolling unintentionally and replaces the hand brake.
I n addition to the normal functions of a tradi­
tional hand brake, the electromechanical parking brake provides various convenience
and safety functions.
When starting from a stop
- T he integral hill start assist helps you when
dr iving by automatically releasing the park­
ing brake ~
page 83, Starting from a
stop .
-When starting on inclines, the hill start as­
sist prevents the vehicle from unintentional­
l y rolling back. The braking force of the
parking brake is not released until sufficient driving force has been built up at the
wheels.
Emergency brake function
An emergency braking functions ensu res that
the vehicle can be slowed down even if the
normal brakes fail~ page 84, Emergency
braking function.
_.&. WARNING
- Do not press the accelerator pedal inad­
vertently when the vehicle is stationary
and the engine is running and a gear is
selected. Otherwise the vehicle will start
to move immediately and could result in
a crash .
- If the power supply fails, the released
parking brake can no longer engage . In
this case, park the vehicle on leve l
g round and secure it by placing these­
lecto r lever in the P position. See an au­
thorized Audi dealer or authorized Audi
Service Facility for assistance.
(D Note
If the. or. (USA models) I. (Cana­
da models) indicator light in the instru­
ment cluster blinks, there is a malfunction
i n the brake system. Refer to the detai led
description of the indicator lights
~page 18.
- If the . (USA models) I. (Cana-
da models) or
Ill indicator light turns
on, there is a malfunction in the parking
brake
c> page 19.
(D Tips
- If the electromechanica l parking brake is
set while the ignition is switched off, the
¢@'A indicator light in the button and in
the instrument cluster dis-
play . (USA models) /. (Cana-
da models) will turn off after a certain
amount of time.
- If driver's door is opened while the igni­
tion is switched on, the park ing brake
sets automatically. This prevents unin­
tended rolling of the vehicle.

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-Occasiona l noises when the parking
brake is set and re leased are norma l and
are not a ca use for concern .
- When the vehicle is parked, the parking
brake goes through a se lf-test cycle at
regular intervals. Any noises associated
with th is are normal.
- If there is a power failure, the parking
brake will not set if it is released, and it
will not release if it is set c::>
,&. See an
authorized Audi dea ler or authorized
Audi Service Facility for assistance .
Parking
"'Press the bra ke peda l to stop the vehicle.
"' Pull the switch@c::>
page 82, fig. 82 to set
t h e parking bra ke.
"' Place the selector lever in the P position .
"'T urn the eng ine
off c::> _& .
"'Turn the steering whee l when parking on in­
clines so that the whee ls will ro ll into the
curb if the vehicle starts moving.
A WARNING
-Always take the vehicle key with you when leaving the veh icle, even for a
short per iod of t ime. This applies partic­
u larly when ch ild ren remain in the vehi ­
cl e. Otherwise chi ld ren could sta rt the
engine, re lease the par king brake or op ­
erate electrical eq uipment such as powe r
w indows, which increases the risk of an
acc ident.
- No one sho uld remain in the vehicle
when it is locked, especia lly children.
Locked doors make it more diffic ult for
emergency workers to get into the vehi­
cle, which puts lives at risk.
Dri vin g 83
Starting from a stop
The start assist function ensures that the
parking brake is released automatically upon starting .
Stopping and setting the parking brake
"' Pull the sw itch @c::> page 82 , fig. 82 to set
the parking brake.
Sta rting and automatically rel easi ng the
parking brake
Req uirement: The dr iver's door must be
locked and the driver's safety belt must be
fastened.
"' When you press the accelerator peda l, the
parking brake is automatically re leased and
your vehicle begins to move.
When stopping at a traffic signal or stopping in city traff ic, the parking brake can be ap­
plied . The vehicle does not have to be held
with the brake pedal. The parking brake elimi­ nates the tendency to creep when a selector
lever pos it io n is engaged. As soon as you
press the accelerato r peda l, the par king b rake
r eleases a utomat ica lly and the vehicle starts
to move.
Starting on slopes
When sta rting on incl ines, the hill start assist
prevents the vehicle from un intent ionally roll­
i ng ba ck. The bra kin g fo rce of the par kin g
brake is not re leased unt il su ff ic ient d riving
f o rce has been built up a t the wheels.
(D Tips
Fo r safety reaso ns, t he pa rking bra ke is re­
l eased automatic ally o nly when the d riv­
er's safety bel t is fa stened an d the driver's
d oor is locked.
•

84 Driving
Emergency braking function
This is used if the conventional brake system
fails or locks up.
... To brake your veh icle in an emergency, pu ll
the @switch ¢
page 82, fig. 82 and hold it
pulled .
... As soon as you releas e the @ switch or ac-
cele rate, the braking p rocess stops.
Pulling and holding the @switch while driv­
in g at a speed of about 2 mph (3 km/h) or
h igher in itiates the emergency b rak ing func­
tion . The vehi cle is braked at all fou r whee ls
by activat ing the brak ing hydrau lics. The brake
performance is s imilar to heavy bra ki ng. ¢.&.
To help prevent act ivat ing the emergency
b rak ing by mis take, an audib le wa rning tone
(b uzzer) sounds when the @switch is pulled.
E me rgency braking s tops as soo n as the @
switch is released or the accelerator peda l is
p ressed.
&_ WARNING
Emergency braking shou ld only be used in
an emergency, when the normal brake
pedal has failed or the brake pedal is ob­
structed . Du ring emergency braking, your
vehicle will brake similar to heavy braking.
ESC and the assoc iated components (ABS,
ASR, EDL) cannot overcome the laws of
physics. In corners and w hen road or
weather conditions are bad, a full brake
application can cause the vehicle to skid or
the rear end to b reak away, which increas­
es the risk of an acc ident.
Hill hold
Applies to vehicles: with H ill Hold
Hill hold makes it easier to start on hills .
Requirement: The driver door must be closed
and the engine must be r unning .
The system is act iva ted when the brake pedal
i s pressed wh ile the veh icle is s ta tionary .
To prevent the vehicle from ro ll ing back when
start ing , the bra ke power is he ld for a br ief moment afte
r releasing the brake pedal. D ur­
ing t his time, you can easi ly begin to move
you r vehicle .
A WARNING
"---
-The intelligent technology of Hi ll Hold
cannot overcome the limitations im­ posed by natural physical laws . The in­
creased comfort offered by H ill Hold
should not cause you to take safety r is ks.
- Hill Hold cannot hold the vehicle in all
h ill sta rt situations (fo r example, if the
g round is slippery o r icy).
- If you do not beg in moving immediately
after releasing the brake pedal, the vehi­
cle could begi n to roll ba ckward unde r
certain ci rc u ms tances. Press the brake
pedal or set the pa rk ing brake immedi­
ately.
- If the eng ine "stalls", press the b ra ke
pedal or set the pa rking brake immedi ­
ately.
- Starting on inclines in stop-and-go t ra f­
fic: To help prevent the vehicle from ro ll­
in g back when starting, press and ho ld
the brake pedal fo r several seconds when
the vehicle is stationary.
(D Tips
You can find o ut if yo ur vehicle is equ ipped
with Hill Hold by checking at an a uthorized
A udi dealer or qualified repair facility.
Speed warning system
Introduction
The speed warning system helps you to stay
under a specified maximum speed .
The speed warning system war ns you if you
are exceeding the maximum speed that you
have set . You will hear a warning tone when
yo ur speed exceeds the stored value by ap­
proximate ly 3 mph (3 km/h). The . (U SA
models)/ . (Canada models) ind icator light
and the message
Speed limit e xceeded! ap­
pear in the instrument cluster display at the
same time. The./. indicator light turns ..,.

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off when the speed decreases below the stor­
ed maximum speed.
Setting a thresho ld is recommended if yo u
wo uld like to be reminded when you reach a
certain maximum speed . Situations where you
may want to do so include d riving in a country
with a general speed limit or if there is a
specified max imum speed for winter tires.
@ Tips
Regard less of the speed warning system,
you shou ld always mon itor your speed us­
ing the speedometer and make sure you
are following the legal speed limit.
Setting the threshold
You con set, change and delete the threshold
in the MMI.
• Se lect : the
IMENU ! button> Car> System s*
control button > Driv er assist an ce > Speed
w arning .
You can set any thresho ld between 20 mph
(30 km/h) and 150 mph (240 km/h). Settings
can each be adjusted in increments of 6 mph
(10 km/h).
Cruise control system
Description
Appl ies to vehicles : with cruise con trol system
The c ruise control system makes i t possible to
d rive at a constant speed starting at lS mph
(20 km/h).
The speed is kept constant by modify ing en­
g ine power or through an a ct ive brake in ter ­
vention.
A WARNING
- Always pay attention to the traffic
around you when the cruise control is in
operation. You are always responsible for
your speed and the distance between
your vehicle and other vehicles.
- For reasons of safety, cruise contro l
should not be used in the c ity, in stop-
Dri vin g 85
and-go traffic, on winding roads and
when road cond itions are poor (such as
ice, fog, gravel, heavy rain and hydro­
plan ing) -you could have an accident.
- Switch the cruise control off temporarily
when dr iv ing in turning lanes, h ighway
e xits or in construction zones.
- Please note that unconsc iously "resting"
your foot on the accelerator pedal p re­
vents t he cr uise control from b raking.
This is due to the control system be ing
over ridden by the dr iver's acceleration .
- If the re is a brake system malfunct ion
such as overheating when the spee d
warn ing system is switched on, the bra k­
ing f unction in the system w il l be deac ti­
vated . The remaining speed warning sys ­
tem fu nctions will remain active, as long
as the
Ill ( U SA mode ls) I l'I (Canada
models) indicator light is on.
(D Tips
- T he cr uise control system is ideal fo r
st retches wit h speed limits. The driver is
responsib le for adhering to the correct
speed.
- The cr uise control remains act ive when
shift ing gears.
- The b ra ke lights turn on when the b rakes
are act ivated.
Switching on
Applies to vehicles: with cruise control system
Fi g. 83 Operat ing lever: Cruise control system
• To swi tch the cruise cont ro l on, p ull the lev­
er into pos it ion @
~fig. 83.
• Dr ive at the speed to be maintained.

86 Driving
• To store the speed, p ress the button @. T he
II (USA models) I i'I (Canada models)
turns on in the instrument cluster.
Changing speed
Applies to vehicles: with cru ise control system
• To increase or decrease the speed in incre­
ments,
t ap the lever in the 010 direction
c:> page 85, fig. 83.
• To increase or decrease the speed qu ickly,
h o ld the leve r in the 010 direction until
the des ired speed is reached .
Overriding the speed
You can press the acce lerator pedal down to
increase your speed, for example if you want
to pass someone . The speed you saved earlier
will resume as soon as you release the acceler­
ator pedal.
I f, however, you exceed your saved speed by 5
mph (10 km/h) for longer than 6 minutes, the
cruise contro l turns off temporari ly. The
Ill
(USA models) I El (Canada models) indicator
light in the instrument cluster turns off and
the stored speed is retained.
Preselecting the speed
Applies to vehicles: with cruise control system
You can preselect your desired speed when
the vehicle is stationary.
• Switch the ignition on.
• Pull the lever into position
(D c:> page 85,
fig. 83.
• To increase or decrease the speed, tap the
lever in the
0 10 d irect io n.
This funct ion makes it possible, for example,
to save the speed you want before driving on
the highway . Once on the highway, activate
the cruise contro l by pull ing the lever towa rd
(D .
Switching off
Applies to vehicles: with cruise control system
Temporary deactivat ion
• Press the brake pedal, or
• Press the leve r into position @(not clicked
into p lace)
~ page 85, fig. 83, or
Switching off completely
• Press the lever into position @(clicked into
place), or
• Switch the ignit ion off.
The speed you stored will be retained if the
c ruise control has been switched off tempora­
rily . To resume the stored speed, re lease the
brake pedal and pu ll the lever into position
(D.
The stored speed is erased when the cruise
control is sw itched off complete ly or the igni­
t ion is switched off .
,&. WARNING
You should only resume the stored speed if
i t is not too high for ex isting traffic con di­
tions . Othe rwise you r is k an acc ident.
(D Tips
- If the bra kes become too heated whi le
dr iving, t he cr uise control sw itches off. If
t his happens w hile d riving downhill, you
can relieve t he b rakes by shifting into a
lower gear.
- W hen the cruise cont rol is activa ted, E SC
sport mode cannot be switched on .

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Audi adaptive cruise control
Introduction
App lies to vehicles: with Audi adaptive cruise control
The adaptive cruise control system is a com bi·
nation of speed and distance regulation. It as ­
sists the dr iver by both regulat ing the speed
and maintain ing a distance to the object
ahead, within the abilities of the system. If
the system detects an object, adaptive cru ise
control can brake and acce le rate your ve hicle.
This makes driving more comfortable both on l ong stretches of highway and in stop-and -go
traffic.
General Information
General information
Applies to vehicles: with Audi adaptive cruise co ntrol a nd
Audi pre sense fro nt
Fi g. 84 Front of vehicle: sensor
The genera l information applies to adaptive
cr uise control* and pre sense front *
c::>page95.
The radar se nsor a rea c::>fig. 84 must not be
covered w it h stickers, deposits or any other
obstructions as it may impair the function of
the adaptive cruise contro l and the pre sense
front. For information on cleaning, refer to
,:t 0 0 > l8
c::> page 204. The same applies for any modifi­
cations made in the front area.
The function of the adaptive c ruise control
system and pre sense front is lim ited in some
conditions :
Audi ad apti ve crui se control 8 7
- Objects can only be detected when they are
within the sensor range
c::> page 88,
fig. 87 .
-The system has a limited ability to detect
objects that are a short d istance ahead, off
to the side of your vehicle or moving into
your lane.
- Objects that are difficult to detect such as
motorcycles, veh icles with high ground
clearance or an overhanging load are detect­
ed late or not detected at all.
- When driving through curves
c::>page 88.
-With stationary objects c::> page 88 .
A WARNING
Always pay attent ion to traffic when adap­
tive cruise control is switched on and the
pre sense front is active
c::> page 95. As
the driver, you are s till respons ib le for
start ing and fo r ma inta in ing speed and
d is ta nce to o ther objec ts. The pre sense
front i s used to ass ist yo u. The dr iver must
al ways take ac tion to avo id a col lision . The
driver is always responsible for braking at
the correct time .
- I ncorrect use of the a daptive cr uise con ­
trol can cause collisions, ot her accidents
an d serio us pe rsonal inj ury .
- For safety reasons, do not use adaptive
cru ise contro l when driv ing o n roads with
many curves, when the road s urface is in
poor condition and/or in bad weather
(such as ice, fog, grave l, heavy ra in and
hydroplaning). Using the system unde r
these co ndit ions co uld res ult in a coll i­
sion.
- Sw itch adaptive cru ise cont ro l off tempo·
ra rily whe n driving in tu rni ng lanes, o n
expressway ex its or in construction
zones. T his preven ts the vehicle from ac ­
celerating to the se t speed when in t hese
situations .
- Th e adap tive cruise control system
will
not brake by i tsel f if you pu t your foo t on
the accelera to r pedal. Do ing so can ove r-
ride t he speed and distance reg ulat io n.
~

88 Audi adaptive cruise control
- When approaching stationary objects
such as stopped traff ic, adaptive cruise
control will not respond and pre sense
front will have limited function.
- The adaptive cruise control system and
pre sense front do not react to people,
animals, objects cross ing the road or on­
coming objects.
- The function of the radar sensors can be
affected by reflective objects such as
guard rai ls, the entrance to a tunnel,
heavy rain or ice.
- Never follow a veh icle so closely that you
cannot stop your vehicle safe ly. The
adaptive cruise control cannot slow or
brake the vehicle safely when you follow
another vehicle too closely. Always re­
member that the automatic braking
function ca nnot bring the veh icle to a
sudden or emergency stop under these
condit ions.
- To prevent unintended operation, always
switch ACC off when it is not be ing used.
(D Note
The sensor can be disp laced by impacts o r
damage to the bumper, whee l housing and
underbody . The adaptive cruise contro l
and pre sense front may become impaired
as a result . Have an authorized Audi dealer
or author ized Audi Service Facility check
their function.
In curves
Applies to vehicles: with Audi adaptive cruise control and
Audi pre sense fro nt
Fig. 85 Examp le: driv ing into a curve
When driving into a curve c::> fig. 85 and out of
a curve, the adaptive cruise control may react
to an object in the neighboring lane and apply
the brakes. You can prevent that by pressing
the accelerator pedal briefly .
Stationary objects
Applies to vehicles: with Audi adaptive cruise contro l and
Audi pre sense front
Fig. 86 Example: object chang ing lanes a nd stationary
object
Adaptive crui se control
The adaptive cruis e control system only reacts
to objects that are moving or that the system has a lready detected as moving. For examp le,
if a detected vehicle @tur ns or changes
lanes, the adaptive cruise control will not re­
act to a stopped vehicle @. Press the brake
pedal to slow your vehicle down .
Pre sense front
Pre sense front only reacts to stationary ob­
jects at low speeds.
Adaptive cruise control
Description
Applies to vehicles: with Audi adaptive cruise control
--~.....,
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Fig. 87 Detectio n ran ge

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What can adaptive cruise control do?
The adaptive cruise control system uses rada r
and a video camera. The radar is subject to
designated system limits ¢ page 87.
On open roads w ith no traffic, it functions l ike
a cruise control system . Th e stored speed is
maintained . When approaching an object
ahead and the system detects it, the adaptive
cr uise control system automatically brakes to
match that object's speed and then maintains
the stored distance. As soon as the system
does not detect an object ahead, adaptive
cru ise control accelerates up to the stored
speed .
With in the limits of the system, adaptive
cru ise control can brake in stop-and-go traff ic
until the vehicle is stationary and then begin
driving aga in under certa in conditions
¢ page 91, Driving in stop-and-go traffic.
Which functions can be controlled?
When you switch adaptive cruise control on,
you can set the current speed as the "control speed" ¢ page
89, Switching on/off.
When driving, you can stop cruise control
c::> page 91 or change the speed c::> page 90
at any time .
You can also adjust the following settings:
- Dis ta nee
c::> page 92
- Driving program c::>page
93
- Driving mode c::> page 93
l) Speed limit s depend on the country and the speedom ­
eter .
Audi adaptive cruise control 89
Switching on/off
Applies to vehicles: wit h Aud i adapt ive cr uise contro l
Fig. 88 Oper ating lever: swit c hing on and off
Fig. 89 Instrument cluster: adapt ive cruise control
You can set any speed ll between 20 mph and
95 mph (30 and 150 km/h).
Indicator lights and messages in the instru­
ment cluster disp lay inform you about the cur­
rent situation and settings.
Switching adaptive cruise control on
.,. Pull the lever toward you into posi tion (I)
c::> fig. 88. ACC: standby appears in the in­
strument cluster display.
Saving the speed and activating regulation
.,. To save the current speed, press the ISETI
c::> fig. 88 button. The stored speed is shown
in the tachometer LED line@and appears
briefly in the information line @ c::>fig .
89 .
.,. To activate the regulation while stationary,
you must press the brake pedal. ..,.