2015 AUDI RS5 CABRIOLET brakes

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conditions. Always be ready to apply the
brakes.
Manual shift program
Using the manual shift program you can
manually select gears.
Fig. 99 Ce nter console: shift ing t he gea rs manually
Fig. 100 Stee ring wheel: shift paddles
Gear selection with selector lever
The tiptronic mode can be selected either with
the vehicle stationary or on the move.
.. Push the selector lever to the right from 0/
5. An M appears in the instrument cluster
display as soon as the transmission has
shifted.
.. To upshift, push the selector lever forward
to the plus position
0 c:> fig. 99 .
.. To downshift, push the lever to the minus
pos ition
0 -
Gear selection with shift paddles*
The shift paddles are activated when these­
lector lever is in 0/5 or the t iptron ic manual
shift program.
.. To upshift, touch the shift paddle on the
right
0 c:> fig. 100. Transmission 87
.. To downshift, touch the shift paddle on the
left
0 .
.. If you do not press a sh ift paddle within a
short time while in the 0/5 position, the
transmission will return to automatic mode.
To keep shifting using the shift paddles,
move the selector lever to the r ight out of
the 0/5 position .
When accelerating, the transmission does
not
automatically shift to the next gear shortly
before the max imum pe rm itted engine RPM is
reached.
If you have selected a lower gear than the cur­
rent one, the automatic transmission will shift
down only when the engine w ill not be over­
revved.
With kick-down , the transm ission shifts into a
lower gear depend ing on speed and engine
RPM .
(D Tips
Tiptronic is inoperat ive when the transmis­
sion is in the fail-safe mode .
, Kick-down
Kick-down enables maximum acceleration.
When you depress the accelerator peda l be­
yond the resistance point, the automatic
transmission downshifts into a lower gear, de­
pending on vehicle speed and eng ine speed .
The upshift into the next higher gear takes
place once the max imum specified engine
speed is reached .
.&_ WARNING
Please note that the whee ls can spin if
kick-down is used on a smooth slippery
road -there is a risk of skidding.
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Audi adapt ive crui se c ontrol an d bra kin g guard 91
confirmed by the video camera, an acute
collision warning.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplan ing). Using the system under
these conditions cou ld result in a co lli­
sion.
- Switch adaptive cruise control off tempo­ rar ily when driving in turning lanes, on
expressway exits or in cons truction
zones. This prevents the vehicle from ac­ celerating to the set speed when in these
situations.
- The adaptive cr uise control system wi ll
not brake by itse lf if you p ut your foot on
the accelerator pedal. Doing so can over­
ride the speed and distance regulation .
- When approaching stationary objects
such as stopped traff ic, adaptive cruise
control will not respond and braking
guard w ill have limited function.
- The adaptive cruise control system and
braking guard do not react to people, an­
ima ls, objects crossing the road or on­
coming objects.
- The function of the radar sensor can be
affected by reflective objects such as
guard rails, the entrance to a tunnel,
heavy rain or ice.
- Never follow a ve hicle so closely that you
cannot stop your vehicle safely. The
adaptive cruise cont ro l cannot slow or
brake the veh icle safely when you follow
ano ther veh icle too closely. Alway s re­
member that the automatic braking
function cannot bring the vehicle to a sudden or emergency stop under these
condit ions.
- To prevent unintended operation, always
switch ACC off when it is not being used.
(D Note
The sensor can be disp laced by impacts or
damage to the bumper, whee l housing and
underbody . That could affect the adaptive cruise control
system and braking g uard.
Have your authorized Audi dea ler or au­
thorized Audi Service Facility chec k their
funct ion.
In curves
App lies to vehicles: with A ud i ada ptive c ruise contro l
F ig . 1 04 Examp le : driv ing into a curve
When driving into a curve ¢ fig. 104 and out
of a curve, the adaptive cru ise contro l may re­
act to a vehicle in the next lane and app ly the
brakes. You can override or prevent the brak ­
ing by pressing the accelerator pedal briefly.
Stationary objects
Applies to vehicles: wit h Audi adapt ive cr uise contro l
F ig . 1 05 Examp le: objec t chang ing la n es and stat ion­
a ry object
The adaptive cruise control system only reacts
to objects that a re mov ing or that the system
has a lready detected as moving . For examp le,
if a ve hicl e@ , which has already been detec t­
ed by the adaptive cru ise con trol , turns or
changes lanes and another stationa ry vehicle
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.

Audi adaptive cruise control and braking guard 93
shown in the tachometer @and is also
shown briefly in the display @¢
fig. 108 .
Switching Audi adaptive cruise control off
~ Push the lever away from you into position
@ until it clicks into place. The message
ACC off appears.
@ Indicator lights
II-Adaptive cru ise control is switched on.
No vehicles are detected up ahead. The stored
speed is ma intained.
• -A moving vehicle is detected up ahead.
The adaptive cruise control system regulates
the speed and distance to the moving vehicle
ahead and acce lerates/brakes automatica lly.
• -When automatic braking is not able to
keep enough distance to a previously detected
mov ing vehicle up ahead, you must take con­
trol and brake¢
page 95, Request for driver
intervention.
© Display
If adaptive cruise control is not shown in the
d isplay, you can call it up with the
I RESET I
button ¢ page 23.
Based on the symbols in the d isplay, you can
determine if the system is maintaining a dis­
tance to the vehicle ahead and what that dis­
tance is.
No vehicle -No vehicle ahead was detected.
White vehicle -A vehicle ahead was detected .
Red vehicle -Prompt for the driver to take ac­
tion
~ page 95.
Both arrows on the scale © indicate the dis­
tance to the vehicle ahead . No ar row appears
when the vehicle is on an open road and there
is no object ahead . If an object is detected
ahead, the arrow moves on the scale.
The green zone on the scale shows the stored
distance. For information on changing the
~ stored distance, refer to~ page 94. If the
a: ~ distance selected is too close or may soon be-
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come too close, the arrows move into the red
zone on the scale .
A WARNING
Improper use of the adaptive cruise con­
trol can cause collisions, other accidents
and serious personal injuries.
- Pressing the
!SET ! button when driv ing at
speeds below 20 mph (30 km/h), w ill au­
tomatically accelerate the vehicle to
20 mph (30 km/h), which is the mini­
mum speed that can be set.
@ Tips
-If you switch the ignit ion or the adaptive
cruise control off, the set speed is erased
from the system memory.
- The electronic stab ilizat ion control (ESC)
and the anti-slip-regulat ion (ASR) are au­
tom atica lly turned on when the adaptive
cruise control is turned on. Both systems
cannot be turned off if the adaptive
cruise control is turned on .
Changing the speed
Applies to vehicles: with Aud i adapt ive cru ise control
0
f
jJ
0
Fig. 109 Selector lever: ch ang ing the speed
~ To increase or reduce the speed in incre­
ments,
tap the lever up or down.
-0:, N 0 ± ... a)
~ To increase or reduce the speed quickly, hold
the lever up or down until the red LED@
reaches the desired speed ¢
page 92,
fig. 108.
Following any changes, the new stored speed
will be displayed briefly in the display@
~page 92, fig. 108.

94 Audi adaptive cruise control and braking guard
Interrupting cruise control
Applies to vehicles: with Audi adaptive cruise control
Fig. 110 Selector leve r
Requirement : adaptive cruise contro l must be
switched on
¢fig.110 (i).
Overriding cruise control
.. To accelerate ma nually, press the accelera­
tor pedal. The message
ACC override ap­
pears .
.. To resume adaptive cruise control, remove
your foot from the gas pedal. The system re­
turns again to the speed that was saved be­
fore .
.. You can save a new speed at any time by
pressing the
I SETI button ¢ page 11, fig. 4.
Canceling cruise control while driving
.. Move the lever into posit ion @. The mes­
sage
ACC standby appears . Or
.. press the brake pedal.
.. To resume the stored speed, move the lever
into position @.
&_ WARNING
Never resume the stored speed if the
speed is too high for prevailing road, traf­
fic or weather cond itions.
Setting the distance
Applies to vehicles: wit h Audi adapt ive cr uise contro l
Fig. 111 Selector lever : sett ing the distance
.. Tap the switch to display the current set dis­
tance
¢ fig. 111 .
.. To increase or reduce the distance by incre­
ments, tap the switch again to the left or
r ight. The distance between the two vehicles
w ill change in the instrument cluster dis­
play .
When approach ing a moving vehicle up ahead,
the adaptive cruise control system brakes to
match that object's speed and then maintains
the stored dis tance. If the vehicle ahead ac­
ce le rates, adaptive cruise control will also ac­
ce lerate up to the stored speed.
T he higher the speed, the greater t he distance
in yards (meters)
c:::> /1.. Th e Distan ce 3 setting
is recommended .
T he distances provided are specified va lues .
Depending on the driv ing situation and the
how the veh icle ahead is driving, the actual
distance may be more or less than these tar­
get distances.
T he various symbols for the time inc reme nts
appear briefly in the information line @
¢ page 92, fig. 108 when you change the set­
tings.
c::::,_c::::, ___ Distance 1: Th is setting corre-
sponds to a distance of 92 feet/28 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1 second.
c::::, __ c::::, __ Distance 2: This setting corre­
sponds to a distance of 118 feet/36 meters
when traveling at 62 mph (100 km/h), or a
time interval of 1.3 seconds.

96 Audi adaptive cruise control and braking guard
Audi braking guard
Descript ion
Applies to vehicles: with Audi adaptive cru ise control
Fig . 11 3 Instrumen t cl uste r: approach warn ing
Braking guard uses a radar sensor. It also
functions within the limits of the system
when adaptive cruise cont ro l is switched off .
What can Audi braking guard do? When detected i n time, the system ca n assess
situations when a vehicle ahead brakes sud­
denly or if your own veh icle is traveling at a
hi gh speed and approachi ng a ve hicle up
a head that is moving more slowly . Brak ing
guard does not react if i t can not detect the
situation.
The system advises you of various situations :
- The distance warning is given if you are too
close to t he vehicle ahead for a long time . If
the vehicle ahead b rakes sharply, you w ill
not be ab le to avoid a c oll is io n. The indicator
li ght . i n the disp lay comes o n.
- The approach warning is given when a de ­
tected vehicle up ahead in your lane is mov­ i ng much more slowly tha n you are or if it
brakes sha rply . W hen th is w arning is given,
i t may only b e possib le to avoid a collision
b y swerving or braking s harply . Th e in dicator
l igh t. and indic ator in the di sp la y w ill
warn you about the danger
i:> fig . 113. Yo u
will a lso hear a n acoustic signa l.
I f yo u do not reac t fas t enoug h or do not reac t
a t all to the situ ation , Br aking gu ard will i n-
ll This is not ava ilable in some co untri es .
tervene by b rak ing and the message braking
guard intervention will appea r.
- If a coll is ion is imm inent, the sys tem wi ll
fi rst provi de an acute warning by br iefly an d
sharply a pplying the brakes.
- If you do not re act to the acu te w arn ing,
bra king g uard can brake w it hi n the lim its of
the system . T his red uces the vehicle speed
in the event of a collision .
- At speeds un der 20 m ph (3 0 km/h), t he sys ­
tem can initiate a comp lete deceleration
short ly before a co llision
ll .
- If the bra king g uard senses that yo u are not
bra king hard enough w hen a co llision is im ­
m inent, it can inc rease the brak ing force.
Which functions can be controlled?
You can swi tch braki ng gu ard and t he dis­
tance/ap proa ch warn ing on or off in the rad io
o r MM I
r:!;>page 97, Settings in the radio/
MMI.
A WARNING
-Lack of attention can cause collisions, oth­
er accidents and serio us pe rsonal injuries.
The braking gua rd is an assist system and
ca nnot preve nt a collision by itself. The
dr ive r must alway s intervene. Th e dr ive r is
al ways res po nsib le fo r braking a t the co r­
r e ct ti me.
- Always pay clos e attent io n t o traffic,
eve n when the br aking gu ard is swi tched
o n . B e rea dy t o int erve ne and be re ad y to
t ake com plete control w he never nece ssa­
ry. Always keep the safe and legal dis ­
tance between your ve hicle an d veh icles
up ahead.
- Braking gua rd wo rks within limits and
will not res po nd outside the system lim­
its, for examp le w hen approachi ng a
sto pped veh icle o r stationary o bstacle
(end of a traffic jam or ve hicle that has
b roken dow n in t ra ffi c).

172 Intelligent technology
distance detected to the vehicle ahead is too
smal l.
Anti-slip regulation (ASR )
ASR reduces eng ine power when the drive
wheels begin to spin and adapts the fo rce to
the road condit ions. This makes it eas ier to
start, accelerate and drive up hills .
Electronic differential lock (EDL )
The EDL brakes wheels that are spinn ing and
transfers the d rive powe r to the other wheels.
This f unct ion is available up to abo ut 60 mph
(100 km/h) .
In extreme cases, ED L automat ica lly switches
off to help keep the brake on the braked whee l
from ove rheating. EDL wi ll switch on aga in a u­
tomatically when conditions have returned to
norma l.
Steering recommendation
The ESC helps to stabilize the ve hicle by
changing the steering to rque.
In vehicles with dynam ic steeri ng*, ESC also
helps to stabilize the stee ring in critical s itua­
tions.
Select ive wheel torque control
Selective whee l torque control is used when
driving on curves . The front wheel on the in­
side of the curve or both wheels on the inside
of the curve are braked selective ly as needed.
This a llows mo re prec ise d riving in curves. The
appl icable system may no t activate when d riv­
i ng in wet or snowy condi tions.
A WARNING
- The ESC and its integrated systems can ­
not overcome the laws of physics. This is especia
lly important on slippery o r wet
roads. If the systems begin acting to sta­
bilize your veh icle, you should immedi­
ately change your speed to match the
road and traffic cond itions. Do not let
the increased safety provided by these
systems tempt you to take risks. Do ing
so will in crease the r is k of a loss of vehi­
cle control, collision and serious person al
in juries.
- Always adap t your speed to road, traffi c
and weather conditions . The risk of los ­
ing control of the vehicle increases when
driving too fast, especially through
curves and on slippery or wet roads, and
when dr iv ing too close to vehicles up
ahead. The ESC and its integrated sys­
tems cannot a lways p revent collisions -
there is still a risk of acc idents!
- Always accelerate with special care on
even, smooth s urfaces such as those that
are wet or covered with ice and snow.
T he drive w heels can spin even w ith
these assistance sys tems that cannot al­
ways he lp to re duce the risk of loss of ve ­
h icle control.
(D Tips
- ABS and ASR o nly wo rk correctly when
a ll four wheels are equipped wi th iden ti­
c al tires. D ifferen t tire sizes can lead to a
reduction in engine powe r.
- Yo u may hear noises when the systems
descr ibed are workin g.
-If the ind icator light DJ or Ea (USA
mode ls)/ lCOj t here may be a malfunction
~ page 18,
<=>page 19.

174 Intelligent technology
Braking
What affects braking efficiency?
New brake pad s
Du ring the first 2 50 miles (400 k m), new
b ra ke pads do not possess their fu ll braking
effect , they have to be "broken in" first¢.&. .
The break-in period can be considerably lon­
ger for vehicles with ceramic brake rotors*.
You can compensate for this slightly reduced br aking power by push ing harder on the brake
pedal. Avoid heavy braking loads during the
b reak-in per iod.
Operating conditions and d riving h abits
The brakes on today's automobi les are st ill
subject to wear, depend ing largely on operat­
ing conditions and dr iv ing habits ¢.&. . On
vehicles that are e ithe r dr iven mostly in stop­
and-go city traffic o r are driven ha rd, the
b rake pads should be checked by you r aut hor­
iz ed A udi de aler more often than specified in
the
Warrant y & Maintenan ce booklet . Fail ure
to have your b ra ke pads inspected can resu lt
in red uced brake performance.
On steep slopes, yo u sh ou ld use t he b ra ki ng
effect of the eng ine. Th is w ay, you preven t un­
necessa ry wear on the brake system . If you
must use yo ur brakes, do not ho ld the brakes
down continuously. P ump the brakes at inter ­
va ls.
Operating noise
N oises may occur when braking depending on
the speed, braking fo rce and outside condi­
tions s uch as temperature a nd h umidity.
Due to the na ture of the mate rials used i n ce­
ramic brake rotors*, noises may become more
apparent at low speeds.
Effect of water and road salt
I n ce rtain situat ions, for exampl e after d riving
throug h wate r, in heavy ra in, after overn igh t
conde nsation or afte r washi ng your c ar, the
b ra ki ng effect can be reduced by moisture or
ice on the bra ke rotors and b rake pads. The brakes must be dr
ied first with a few careful
brake applications .
At highe r speeds and with the winds hield wip­
ers t urned on, the b ra ke pads press against
the b rake roto rs fo r a short amount o f time .
This occurs at regular intervals without the drive r not icing and p rov ides for better brake
response time under wet conditions.
The effectiveness of the brakes can be red uced
whe n the vehicle is driven on a sa lt -covered
road and the brakes are not used . Likewise,
you clean off accumulated salt coating from brake d iscs and pads with a few cautious ap­
plicat ions of the bra ke
¢ .&. .
D ue to the ir s urface characteristics, ceramic
brake rotors* absorb moisture in such condi­
tions . T his can cause a temporary reduction in
braking force compared to dry brakes . You can
compensate for th is by pressi ng the brake
p eda l harde r.
Corrosion
There may be a tende ncy for dirt to build up
on the brake pads and corros ion to form on
the d iscs if the car is not driven regu larly or
only for short trips w it h litt le use of the
brakes .
If the brakes are not used frequently, or if cor­
ros io n has formed on the discs, it is adv isable
to clean off the pads and discs by braking
firmly a few times from a moderately h igh
speed ¢.&. .
Faults in the brake system
If you shou ld notice a sudden increase in
brake pedal trave l, then one of the two brake
c ir cuits may have fa iled
c::> .&. .
Low brake fluid level
Malfunctions can occur in the brake system if
t h e brake fluid level is too low. The brake flu id
level is monitored electro nically .
Brake boo ster
The brake booster increases the pressure that
yo u generate with the brake peda l. It works
on ly when the engine is running
. ¢ .&. .,.

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u..
co ,...., \!) ..,.,
,...., ..,., ,....,
Brake lining w ear sta tus
Brake lining we ar may be che cked by visual in­
spection of the condition of the brake pads
through the openings in the whee l. If neces ­
sary, the wheel may be remove d for this in­
spection
c> page 244, Changing a wheel.
.&_ WARNING
- New brake pads do n't have the best sto p­
ping power and must be "broken-in" dur­
ing the init ial 100 to 1 50 m iles (150 to
200 k ilometers) of normal city driving.
T he break-in period can be considerably
longer for veh icles with ceram ic br ake ro­
tors*. You can compensate for this by pressing the brake pedal more firmly.
T his also applies later when new pads are
installed .
- You should perform braking maneuvers
for the purpose of cleaning the brake
system on ly if road condit ions permit.
Other road users must not be put at r isk -
you may cause an acc ident!
- Before descending a steep grade, reduce
speed and shift transmiss ion into a lower
gear or lower driving range. Do not ride
the brakes or hold the pedal down too
long or too ofte n. This cou ld cause the
brakes to get hot and d imin ish b raking
efficiency.
- Do not "r ide the brakes" by resting your
foot on the pedal when you do not inte nd
t o brake. Th is may cause the b rakes to
overheat, prema ture wear and inc reased
stopping distance .
- Under certa in climat ic and operating
conditions such as passing through wa ­
ter, driving in heavy rain or after wash ing
the vehicle, the effectiveness of the brakes can be reduced. In winter, ice can
accumulate on the brake pads, linings,
discs and drums. Carefully apply brakes
for a test. Brakes will dry and ice coat­ ings will be cleaned off after a few ca re­
ful brake applications.
- Driv ing fo r an extended pe riod of time on
salt-covered roads w ithout using you r
Intellig ent technolog y 175
brakes can a lso affect braking efficiency .
Clean off accum ulated salt coating from
brake discs and pads with a few careful
brake applications.
- If you damage the front spoiler, or if you
install a different spoiler , be sure the air
f low to the front brakes is not obstruct­
ed. Otherw ise the brake system could
overheat reducing t he effectiveness of
the entire brake system.
- Failure of one b rake circuit will impa ir
the braking capab ility result ing in an in­
creased s topping distance. Avoid driving
the vehicle and have it towed to the near­
est a utho rized Audi dea le r or q ualified
workshop.
- Never let the vehi cle roll to a stop with
the engine shut off.
- If the b ra ke booste r is no t working, the
brake peda l must be p ressed considera­
b ly harder to make up for the lack of
booster assistance .
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps
the driver when steering.
Power steer ing adapts electronically based on
t he ve hicl e speed.
Indicator lights and messages
• Steering defect ive! Do not drive vehicle!
If this indicator light turns on and stays on
and this message appears, the power steer ing
may have failed.
Do
not continue driving. See your authorized
Audi dealer or a qualified repair facility for as ­
s istance.
E!'Y D ynamic stee ring: System fault! You can
continue dri ving
If the indica tor ligh t turns on and the mes-
sage appears, the stee ring may be more diffi ­
cu lt to move o r more sensit ive than usual. The ..,.
•
•