2015 AUDI A5 CABRIOLET brake

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Audi adaptive cruise control and braking guard
promptly detected or may not be detected
at all.
- Reflective surfaces including crash barriers
or tunnel entrances may impair the function
of the radar sensor.
(D Tips
- You can cancel the braking that is initiated by the system by braking yourself, by accel­
erating noticeably or by swerving.
- Braking guard error messages
Q page 97.
- Keep in mind that braking guard can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to reduce
the risk of damage or injury.
Settings in the radio /MMI
App lies to vehicles: with Audi adaptive cruise co ntrol
... Select : I CARI function button > Car systems*
control button > Driver assist> Audi braking
guard .
Or
... Select :
~I C-A-R~I function button > Audi braking
guard.
System -
Switch Audi braking guard On and Off.
When you switch the ignition on, the message
Audi braking guard off appears if the system is
switched off.
Early warning -The distance and approach warn ­
ings in the display can be switched
On/Off.
(D Tips
-Your settings are automatically stored and
assigned to the remote control key being
used at the times the settings are made.
- If you restrict or switch off the ESC, the
braking guard also switches itself off
¢ page 171.
- Switch braking guard off when you are load­
ing the vehicle onto a vehicle carrier, train,
ship or other type of transportation . This
can prevent undesired warnings from the
braking guard system.
Messages
Applies to vehicles: wi th Aud i adap tive c ruise control
Braking guard: Off
This driver message appears if the system is
turned off via the radio/MMI*. Otherwise, if the
system is turned off, the information appears ev­
ery time shortly after the start of the trip.
The driver message also appears if the system is
not available due to a malfunction or if the ESC is
not switched on
¢ page 171. If this is the case,
the system will not provide warnings about a possible collision.
Braking guard: Activated
This driver message appears if sharp brake pres­
sure was applied due to an acute warning .
•••
Three white dots appear if a setting cannot be se­
lected with the operating lever. For example, this
happens if you want to raise/lower the speed
even though there was no previously saved
speed .
ACC: Sensor blocked
This message appears if the sensor view is ob­
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor~
page 90,
fig. 103.
ACC: not available
The driver message appears if there is a malfunc­
tion. The adaptive cruise control turns off. A
chime sounds as a reminder. Have the system
checked by an authorized Audi dealer or author­
ized Audi Service Facility.
ACC: unavailable
The driver message appears if, for example, the
brake temperature is too high. The adaptive
cruise control is temporarily unavailable . A chime
sounds as a reminder.
Shift lever position!
The driver message appears if the selector lever
is shifted to the N position. The adaptive cruise
control is not available while in this position. .,..
97

Audi adaptive cruise control and braking guard
Stabilization control (ESC)
T his message appea rs if the electroni c stabili za­
t ion con trol ( ESC) is taki ng act io n to s tab iliz e th e
ve hicl e. The adap tive cruise cont ro l tur ns off. A
chime soun ds as a remin der.
Speed too low
This message appea rs if the current speed is too
low
to set or to maintain th e des ired s peed .
The speed being saved must be at least 20 mph (30 km/h). The cru ise cont ro l is turned off for
speeds lowe r th an 12 mph (20 km/h). The adap­
tive c ruise co ntrol rema ins tur ned o n for speeds
above 95 mph (150 km/ h) (override). It w ill sta­
b iliz e aga in at 9 5 mph ( 150 k m/h) whe n the dr iv­
e r tak es his foo t off of the g as peda l.
Parking brake!
The drive r message appea rs when the park ing
b rake is activated. Adaptive cru ise cont ro l is
tur ned off . A chime sounds as a reminde r.
98

Driving safety
the airbag deploys and injure you or your passengers.
Pedal area
Pedals
The pedals must always be free to move and
must never be interfered with by a floor mat or
any other object.
Make sure that all pedals move freely without in­
terference and that nothing prevents them from returning to their original positions .
Only use floor mats that leave the pedal area free
a nd can be secured with floor mat fasteners .
If a brake circuit fails, increased brake pedal trav­
el is required to bring the vehicle to a full stop.
_&. WARNING
Pedals that cannot move freely can cause loss
of vehicle control and increase the risk of seri­
ous injury.
- Never place any objects in the driver's foot­
well. An object could get into the pedal area and interfere with pedal function . In case of
sudden braking or an accident, you would not be able to brake or accelerate!
- Always make sure that nothing can fa ll or
move into the dr iver's footwell.
Floor mats on the driver side
Always use floor mats that can be securely at­
tached to the floor mat fasteners and do not in­
terfere with the free movement of the pedals .
.,. Make sure that the floor mats are properly se-
cured and cannot move and interfere with the
pedals ~.&_ .
Use only floor mats that leave the pedal area un­
obstructed and that are firmly secured so that
they cannot slip out of position. You can obtain
suitable floor mats from your authorized Audi
dealer.
Floor mat fasteners are installed in your Audi .
118
Floor mats used in your vehicle must be attached
to these fasteners. Properly securing the floor
mats will prevent them from sliding into posi­
tions that could interfere with the pedals or im­
pair safe operation of your vehicle in other ways.
_&. WARNING
Pedals that cannot move freely can result in a
loss of vehicle control and increase the risk of
serious personal injury.
- Always make sure that floor mats are prop­
erly secured.
- Never place or install floor mats or other
floor coverings in the vehicle that cannot be
properly secured in place to prevent them
from slipping and interfering with the ped­
als or the ability to control the vehicle.
- Never place or install floor mats or other
floor coverings on top of already installed
floor mats. Addit ional floor mats and other
coverings will reduce the size of the pedal
area and interfere with the pedals.
- Always properly reinstall and secure floor
mats that have been taken out for cleaning.
- Always make sure that objects cannot fall
into the driver footwell while the vehicle is moving. Objects can become trapped under
the brake pedal and acce lerator pedal caus­
ing a loss of vehicle control.
Storing cargo correctly
Loading the luggage compartment
Al/ luggage and other objects must be properly stowed and secured in the luggage compart­
ment .
Fig. 131 Safe load positioning: place heavy ob jects as low
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and as far fo rward as possible. ...

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Smart Technology Notice about data
recorded by the Event
Data Recorder and
vehicle control modules
Event Data Recorder
This vehicle is equipped with an Event Data Re­
corder (EDR). The main purpose of an EDR is to
record, in certain crash or near crash-like situa­
tions, such as an a irbag deployment or hitting a
road obstacle, data that will assist in understand­
ing how a vehicle 's systems performed. The EDR
is designed to record data related to vehicle dy­
namics and safety systems for a short period of
time, typically 30 seconds or less . The EDR in this
vehicle is designed to record such data as:
- How various systems in your vehicle were oper­
ating;
- Whether or not the driver and passenger safety
belts were buckled/fastened;
- How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
- How fast the vehicle was traveling.
These data can he lp provide a better understand­
ing of the circumstances in which crashes and in­
juries occur. NOTE: EDR data are recorded by your
vehicle only if a non-trivial crash situation occurs;
no data are recorded by the EDR under normal
driving conditions and no personal data (e .g .,
name, gender , age, and crash location) are re­
corded. However, other parties, such as law en­
forcement, could combine the EDR data with the
type of personally identifying data routinely ac­
quired during a crash investigation .
To read data recorded by an EDR, special equip­
ment is requ ired, and access to the vehicle or the
E DR is needed. In addition to the vehicle manu­
facturer, other parties, such as law enforcement,
that have the special equipment , can read the in­
formation if they have access to the vehicle or the
EDR .
Some state laws restrict the retr ieval or down­
l oading of data stored by EDRs installed in a vehi­
cle for the express purpose of retrieving data af-
Smart Technology
ter an accident or crash event without the own­
er's consent.
A udi will not access the EDR and/or similar data
o r give it to others -
- unless the vehicle owner (or lessee if the vehi­
cle has been leased) agrees; or
- upon the official request by the police; or
- upon the order of a court of law or a govern-
ment agency; or
- for the defense of a lawsuit through the judicial
discovery process.
- Audi may also use the data for research about
veh icle operation and safety performance or
provide the data to a th ird party for research
purposes without identifying the spec ific vehi­
cle or information about the ident ity of its own­
er or lessee and only after the recorded vehicle
data has been accessed.
Vehicle control modules
Your vehicle is also equ ipped with a number of
electron ic control modules for various vehicle
systems, such as eng ine management, emission
control, airbags, and safety belts.
These electronic control modules record data
during normal vehicle operation that may be
needed by trained technicians for diagnostic and
repair purposes. The recording capability of these
modules is lim ited to data (no sound is reco rded) .
Only a small amount of data is actua lly recorded
over a very limited period of time, or stored when
a system fau lt is detected by a contro l module.
Some of the data stored may relate to vehicle
speed, direction, or braking, as well as restraint
system use and performance in the event of a
crash . Stored data can also only be read and
downloaded w ith specia l equipment that is di­
rectly connected to the vehicl e.
(D Tips
Your vehicle may be equipped with Audi con­
nect. Your use of certain Audi connect fea­
tures requires wireless serv ices that are pro­
v id ed by a third party wire less telecommuni­
cations provider. For details regarding how in­
formation obtained through Audi connect is
collected, processed, transmitted, used, and ..,.
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Smart Technolog y
shared, ple ase see your contract with the
wireless telecommunications provider and the "About Aud i connect" tab in your vehicle's
MMI*:
I MENU ! button > Audi connect > About
Audi conne ct .
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of sk id­
d ing and loss of veh icle control.
It works only
when the engine is runn ing . ESC detects certain
d ifficult driving situations, including when the ve­
h icle is beginn ing to sp in (yaw) out of control and
he lps you to ge t the vehicle back u nder cont rol by
selectively braking the wheels, and/or reducing
engine power and providing steering assistance
to help hold the vehicle on the driver's intended
course. The indicator light
liJ in the instrument
cluster blinks when ESC is taking action to help
you control the veh icle.
ESC has limitations. It is important to remember
that ESC cannot overcome the laws of physics. It
will not always be able to help out under all con­
d itions you may come up against. For example,
ESC may not always be able to help you master
situations where there is a sudden change in the
coefficient of friction of the road surface. Whe n
there is a section of d ry road that is s uddenly cov ­
ered wi th wa ter, s lush or snow, ESC cannot per­
form the same way it wou ld on the d ry surface . If
the vehicle hydroplanes (rides on a cushion of wa ­
ter instead of the road surface), ESC wi ll not be
ab le to he lp you steer the veh icle because contact
with the pavement has been i nterrupted and the
ve hicle cannot be braked or steered. Dur ing fast
cornering, particula rly on w inding roads, ESC
cannot a lways deal as effect ively with d iff icu lt
d riving situat ions than at lower speeds. When
towing a trailer, ESC is not able to he lp yo u regain
con trol as it wou ld if yo u were not towing a trail­
er .
A lways adjust you r speed and dr iving style to
road, traffic and weather conditions. ESC cannot
override the vehicle's physical limi ts, increase the
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available traction, or keep a vehicle on the road if
road departure is a result of driver inattention .
Instead, ESC improves the possibility of keeping
the ve hicle under control and on the road dur ing
extreme maneuvers by using the dr iver's steering
i nputs to help keep the vehicle going in the in­
tended direction. If you are traveling at a speed
that causes you to run off the road before ESC
can p rov ide any assistance, you may not expe ri­
ence the benefi ts of ESC.
ESC is switched o n all the time. In ce rtain s itua­
tions when you need less traction, you can switch
off ASR by p ress ing the button [!]¢
page 171,
fig. 164 or ¢page 171, fig. 165. Be s ure to
swi tch ASR on again when you no longe r need
l ess traction .
The following system s are integrated in the ESC:
Anti- lock braking s ystem (ABS )
ABS prevents the wheels from locki ng up when
braking. The vehicle ca n still be steered even dur­
i ng hard braki ng . Apply steady pressure to the
brake pedal. Do not pump t he pedal. A pu lsing in
t h e b ra ke peda l ind icates that the system is he lp­
i ng yo u to b ra ke the vehicle.
Brake assist system
The brake ass ist system can decrease brak ing dis ­
ta nce. It increases braking power when the d river
presses the bra ke peda l quickly in emergency sit­
u at ions. You must press and hold t he b ra ke peda l
u nt il t he s ituation is ove r. In vehicles with adap­
tive cru ise contro l*, the bra ke assist system is
more sensitive if the distance detected to the ve ­
hicle ahead is too sma ll.
Anti-slip regulation (ASR )
ASR reduces eng ine power when the d rive wheels
begin to spi n and adap ts the force to the ro ad
cond it ions . This makes it eas ie r to start, acce le r­
ate and drive up hills.
Electronic differential lock (EDL)
The EDL bra kes whee ls that a re spinn ing and
t ransfers the dr ive power to the othe r drive wheel
o r whee ls if the ve hicle is equippe d wi th a ll-wheel
drive*. T his function is not available at higher
speeds .

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In extreme cases, EDL a utomatica lly switches off
to help keep the brake on the braked whee l from
overheating. EDL w ill switch on again automati ­
cally when conditions have returned to normal.
Steering re commendat ion
The ESC helps to stabilize the ve hicle by chang ing
the steering torque.
I n vehicles with dynamic steeri ng*, ESC also
h e lps to stabilize the steering in critical s itua­
tions .
Electronic interaxle differential lock* /
sel ectiv e wheel torque control*
The electron ic in teraxle d iffe ren tial lock (front
wheel drive) or the selective wheel torq ue contro l
(all wheel drive) operates when driving through
curves. The front whee l on the ins ide of the cu rve
or both whee ls on the inside of the curve are
braked selectively as needed. Thi s allows more
precise driving in curves. The applicable system
may not activate when driving in wet or snowy
conditions .
_&, WARNING
- The ESC and its integrated systems cannot
overcome the laws of physics. This is espe­
ci al ly impo rtant on slippe ry or wet roads. If
the sys tems begin acting to stabilize your
Switching on/off
Smart Technology
veh icle, you shou ld immediately change
your speed to matc h the road and traffic
conditions. Do not let the increased safety
provided by these systems tempt you to
take risks . Do ing so will increase the risk of a
loss of vehicle control, collision and serious
personal injuries.
- Always adapt your speed to road, traffic and
weather conditions. The risk of losing con­
trol of the vehicle inc reases when dr iving
too fast, espec ially through curves and on
slippery or wet roads, and when dr iving too
close to vehicles up ahead . The ESC and its
integrated systems cannot a lways prevent
coll isions -there is sti ll a risk of accidents!
- Always accelerate with special care on even,
smooth su rfaces such as those that are wet
or covered with ice and snow. The drive
wheels can spin even with these assistance
systems that can not always help to reduce
the risk of loss of vehicle cont rol.
{!) Tips
-ABS and ASR only work correct ly when a ll
four wheels are equipped w ith ident ica l
tires. Different tire sizes can lead to a reduc­
tion in engine power.
- You may hear noises when the systems de­
scribed are working.
ESC turns on automatically when you start the engine.
Fig. 16 4 Version A: lowe r ce nter console,~ OFF button
The ESC is designed to function in levels. Depend­
i ng on the level that is selected, the stabilization
function o f the ESC is limited or switched off . The
F ig. 165 Versio n B: uppe r ce nter console,~ OFF button
amount of s tabilization control will differ de­
pend ing on the level.
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171

Smart Technology
The following situations are exceptions where it
may be usefu l to switch on sport mode to allow
the wheels to spin : -
Rocking the vehicle to free it when it is stuck
- Driv ing in deep snow or on loose ground
- Dr iv ing with snow chains
Sport mode on ESC/ASR off Sport mode off or
ESC /ASRon
Behavior
The ESC and ASR stabiliza- The stabilization funct ion is The full stabilization func-
tion fu nct ions are limited not
available¢ ,&.. ESC and
tion of the ESC and ASR is
¢ ,&. .
ASR are switched
off. available again.
Operation Press the I!> OF F! button Press and hold the I!> OF FI Press the I!> OF F! button
briefly . button longer than 3 sec-again.
onds .
Indicator II turns on. JI and lf'lii•li~ turn on. II turns off or II and
lights lf'lii•l~~ turn off.
Driver mes- Stabilization control (ESC): Stabilization control (ESC): Stabilization control
sages Sport. Warning! Re stricted off. Warning! Restricted (ESC):
On
stability stability
It is only possible to turn off the ASR up to 30
mph (SO km/h) for veh icles wi th front whee l
drive . At about
45 mph (70 km/h) it automatica l­
ly turns on again. It is possible to turn
off the
ASR at any speed for vehicles with all whee l
drive.
A WARNING
-
You should only sw itch sport mode on or
switch ESC/ASR
off if your driving ab ilities and
road condit io ns perm it .
- The stabilization function is limited when
sport mode is switched on. The dr iv ing
wheels could spin and the veh icle cou ld
swerve, especially on slick or slippery road
surfaces.
- There is no vehicle stabilization when ESC/
ASR are switched
off.
(D Tips
ESC/ASR cannot be switched off or sport
mode cannot be switched on when cruise con­
trol or adaptive cru ise control* is sw itched on .
172
Braking
What affects broking efficiency?
New brake pads
During the first 250 miles (400 km), new brake
pads do not possess their full braking effect, they
have to be "broken in" first¢,&. . You can com­
pensate for this slightly reduced braking power
by pushing harder on the brake pedal. Avoid
heavy braking loads during the break-in period.
Operating conditions and driving habits
The brakes on today's automobiles are still sub­
ject to wear, depending largely on operating con­
ditions and driving habits~,&. . On vehicles that
are either driven most ly in stop-and -go city traf­
fic or are driven hard, the brake pads should be
checked by your authorized Audi dealer more of­
ten than specified in the
Warranty & Mainte­
nance booklet .
Failure to have your brake pads
i nspected can result in reduced brake perform­
ance .
On steep slopes, you should use the braking ef­
fect of the engine . This way, you prevent unnec­
essary wear on the brake system. If you must use
your brakes, do not hold the brakes down contin­
uously. Pump the brakes at intervals.

Operating noise
Noises may occur when braking depending on the
speed, braking force and outside conditions such
as temperature and humidity.
Effect of water and road salt
In certain situat ions, for example after driving
through water, in heavy ra in, after overn ight con­
densat ion or after washing your car, the braking
effect can be reduced by moisture or ice on the
brake rotors and brake pads. The brakes must be
dried first with a few carefu l brake applications.
At higher speeds and with the w indshie ld w ipers
turned on, the brake pads press against the brake
rotors for a short amount of time. This occurs at
regular intervals without the driver noticing and
provides for better brake response time under
wet conditions.
The effectiveness of the brakes can be reduced
when the vehicle is driven on a salt-covered road
and the brakes are not used. Likewise, you clean
off accumulated salt coating from brake discs
and pads with a few cautious applications of the
brake ¢.& .
Corrosion
There may be a tendency for dirt to build up on
the brake pads and corros ion to form on the discs
if the car is not driven regularly or only for short
tr ips with little use of the brakes.
If the brakes are not used frequently, or if corro­
sion has formed on the discs, it is advisab le to
clean off the pads and discs by braking firmly a
few t imes from a moderately high speed¢.&.
Faults in the brake system
If you should notice a sudden increase in brake
pedal trave l, then one of the two brake circuits
may have failed
c:> .& .
Low brake fluid level
Malfunctions can occur in the brake system if the
brake fluid level is too low. The brake fluid leve l is
~ monitored e lectronically.
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Smart Technology
Brake booster
T he brake booster increases the pressure that you
generate w ith the brake pedal.
It works on ly
when the engine is running
.c:> .&
Brake lining wear status
Brake lining wear may be checked by visual in­
spect ion of the condition of the brake pads
through the openings in the wheel. If necessary,
the wheel may be removed for this inspection
c:> page 230, Replacing wheels.
_8 WARNING "'---
-New brake pads don't have the best stop­
pin g power and must be "broken-in" during
the initial 250 miles (400 kilometers). You
can compensate for this by press ing the
brake pedal more firmly. This also applies
later when new pads are installed.
-
- You shou ld perform braking maneuvers for
the purpose of cleaning the brake system
only if road conditions permit. Other road
users must not be put at r isk -you may
cause an acciden t!
- Before descending a steep grade, reduce
speed and shift transmission into a lower
gear or lower driving range. Do not ride the
brakes or hold the pedal down too long or
too often . This could cause the brakes to get
hot and diminish braking efficiency.
- Do not "ride the brakes" by resting your foot
on the pedal when you do not intend to
brake. This may cause the brakes to over­
heat, premature wear and increased stop­
p in g distance.
- Under certain cl imatic and operat ing condi­
tions such as passing through water, dr iv ing
in heavy rain or after washing the vehicle,
the effectiveness of the brakes can be re­
duced. In winter, ice can accumulate on the
b rak e pads, linings, discs and drums. Care­
fully apply brakes for a test. Brakes will dry
and ice coatings will be cleaned off after a
few careful brake applications.
- Driving for an extended period of time on
salt -covered roads wi thout using your
brakes can a lso affect braking efficiency .
173