2015 AUDI RS5 COUPE brakes

Audi adapt ive crui se cont rol and bra king gu ard
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condit ion and/or in bad weather (such
as ice, fog, gravel, heavy rain and hydroplan­
ing) . Us ing the system under these condi­
tions co uld resu lt in a collision.
- Switch adaptive cruise control off tempora­
rily when driving in turning lanes, on ex­
pressway exits or in construction zones. This
prevents the vehicle from acce lerating to
the set speed when in these situations.
- T he adapt ive cruise con trol system w ill not
brake by itself if you put your foot on the ac­
celerator pedal. Do ing so can override the
speed and distance regulation.
- When approaching stationary objects such
as stopped traffic, adaptive cruise control
will not respond and braking guard will have
limited function .
- The adaptive cruise control system and brak­
ing guard do not react to people, anima ls,
objects cross ing the road or oncoming ob­
jects.
- The function of the radar sensor can be af­
fected 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 adap­
t ive cr uise control cannot s low or brake the
vehicle safely when you fo llow another veh i­
cl e too close ly. Always remembe r that the
au tom atic b ra ki ng function cannot bring the
vehicle to a su dden or emergency stop un­
der these conditions.
- T o prevent unin tended operation, always
swit ch ACC
off when i t 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. That could affect the adaptive
cru ise cont ro l system and braking guard. Have
"' "' your authorized A udi dealer or authorized 0::
txi Aud i Service Faci lity check their function.
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In curves
Applies to vehicles: w ith Audi adapt ive cru ise contro l
Fig. 91 Examp le : d ri ving into a curve
When driving into a curve c:> fig. 91 and out of a
curve, the adaptive cruise control may react to a
vehicle in the next lane and apply the brakes . You
can override or prevent the braking by press ing
the accelerator peda l briefly.
Stationary objects
Appl ies to vehicles : w ith Audi adaptive cruise control
Fig. 92 Example: object chang ing lanes a nd stationary ob·
ject
T he adaptive cruise control system only reacts to
objects that are moving or that the system has
already detected as moving. For example, if a ve­
hicle @, which has already been detected by the
adaptive cruise control, turns or changes lanes
and another stationary veh icle @ is located in
front of that ve hicle, the system will not react to
t h e stat ionary vehicle.
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Audi adapt ive crui se cont rol and bra king gu ard
tachometer @and is also shown briefly in the
display @
i::> fig. 95.
Switching Audi adapti ve c ru ise contr ol off
~ Push the lever away from you into position @
unt il it clicks into place. The message
AC C off
appea rs .
@ Indicator lights
II -Adaptive cru ise control is switched on. No
vehicles are detected up ahead . The stored speed
i s ma inta ined.
• -A moving vehicle is detected up ahead . The
adapt ive cruise control system regulates the
speed and distance to the moving vehicle ahead
and accelerates/brakes automatically .
• -When automatic braking is not able to keep
enough d istance to a prev iously detected mov ing
vehicle up ahead, you must take control and
brake ¢
page 93, Request for driver interven­
tion.
© Displa y
If adaptive cruise control is not shown in the d is­
play, you can call it up with the !RESETI button
¢page 23.
Based on the symbo ls in the d isplay, you can de­
termine if the system is ma inta ining a distance to
the vehicle ahead and what that distance is .
N o v ehicl e -No vehicle ahead was detected.
Wh it e v ehi cle -A vehicle ahead was detected .
Red v ehicl e -Prompt for the d river to take action
¢page 93.
Both arrows on the scale © indicate the distance
to the veh icle ahead. No arrow appears when the
vehi cle 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 dis­
tance . For informa tion on chang ing the stored
d ista nce, refe r to ¢
page 92 . If the distance se­
l ected is too close or may soon become too close,
the arrows move into the red zone on the scale .
A WARNING
Improper use of the adaptive cruise control
can cause collisions, other accidents and se ri­
ous personal injuries.
- Pressing the !SET ! button when driving at
speeds below 20 mph (30 km/h), w ill auto­
matica lly accelerate the vehicle to 20 mph
(30 km/h), which is the mi nimum speed
that can be set.
a) Tips
- If you switch the ignit ion or the adaptive
cruise control off, the set speed is erased
from the system memo ry.
- The electronic stab ilizat ion cont rol (ESC)
and the anti-slip-reg ulat ion (ASR) are a uto­
matically turned on when the adaptive
cruise contro l is turned on. Both systems
cannot be turned off if the adaptive c ruise
control is turned on .
Changing the speed
Applies to vehicles: wit h Aud i adapt ive cru ise control
0
f
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Fig . 96 Se lecto r lever: chang ing the speed
~ To increase o r reduce the speed in increments,
tap the lever up or down.
~ To increase o r reduce the speed q uickly, hold
the lever up or down until the red LED @ reach­
es the des ired speed ¢
page 90, fig . 95.
Following any changes, the new stored speed wi ll
be displayed briefly in the display @¢
page 90,
fig . 95.
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Audi adaptive cruise control and braking guard
Audi braking guard
Description
Applies to veh icles: w ith Audi adaptive cruise co ntrol
F ig. 100 Instrument cluster : approach warn ing
Braking guard uses a radar sensor. It also func­
tions within the limits of the system when adap­
tive cruise control is switched off.
What can Audi braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes suddenly
or if your own vehicle is traveling at a high speed
and approaching a vehicle up ahead that is mov­
ing more slowly . Braking guard does not react if it
cannot detect the situation .
The system advises you of various situations:
- The
distance warning is given if you are too
close to the vehicle ahead for a long time. If the
vehicle ahead brakes sharply, you will not be
able to avoid a collision. The indicator light.
in the display comes on .
- The
approach warning is given when a detected
vehicle up ahead in your lane is moving much
more slowly than you are or if it brakes sharply .
When this warning is given, it may only be pos­
s ib le to avoid a collision by swerving or braking
sharply. The indicator light . and indicato r in
the display will wa rn you about the danger
¢ fig. 100 . You will also hear an acoustic signa l.
If you do not react fast enough or do not react at
all to the situation, Braking guard will intervene
by braking and the message
braking guard inter­
vention
will appear.
ll Thi s is not available in so me c oun tries.
94
- If a co llision is imminent, the system wi ll first
provide an
acute warning by br iefly and sharply
app ly in g the brakes.
- If you do not react to the acute warning, brak­
ing guard can brake within the limits of the sys­
tem. This reduces the vehicle speed in the event
of a collision.
- At speeds under 20 mph (30 km/h), the system
can initiate a complete deceleration shortly be­
fore a collisionl l_
-If the braking guard senses that you are not
braking hard enough when a collision is immi­
nent, it can increase the braking force.
Which functions can be controlled?
You can switch braking guard and the distance/
approach warning on or off in the radio or MMI
c> page 95, Settings in the radio/MM!.
A WARNING
Lack of attent ion can cause collisions, other
accidents and ser ious personal injuries. The
braking guard is an assist system and cannot
prevent a coll is ion by itself. The dr iver must
always intervene. The driver is always respon­
sib le for braking at the correct time.
- Always pay close attent ion to traffic, even
when the braking guard is switched on. Be
ready to intervene and be ready to take com­
plete control whenever necessary. Always
keep the safe and legal distance between
your vehicle and vehicles up ahead.
- Braking guard works within limits and will
not respond outside the system limits, for
examp le when approaching a stopped vehi­
cle or stationary obstacle (end of a traffic
jam or vehicle that has broken down in traf­
fic).
- Always remember that the radar sensor for
the braking guard works only w ith in defined
detection and range limits that may prevent
the proper detection of other vehicles.
- The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving vehicles up ahead may not be
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shared, please see your contract with the
wireless telecommunications provider and the
"About Aud i connect" tab in your vehicle's
MMI*:
IMENU I button> Audi connect > About
Audi connect .
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of skid­
ding and loss of vehicle control. It works only
when the engine is running. ESC detects certain
d ifficu lt driving situations, including when the ve­
hicle is beginn ing to spin (yaw) out of control and
helps you to get the vehicle back under control by
selectively braking the whee ls, and/or reducing
engine power and prov iding steer ing ass istance
to help hold the vehicle on the driver's intended
course. The indicator light
Bl 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
ditions 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 frict ion of the road surface . Whe n
there is a section of dry road that is suddenly cov­
ered with water, slush or snow, ESC cannot per­
form the same way it wou ld on the dry surface. If
the vehicle hydroplanes (rides on a cushion of wa­
ter instead of the road surface), ESC will not be
ab le to he lp you steer the vehicle because contact
with the pavement has been interrupted and the
vehicle cannot be braked or steered . During fast
cornering, particularly on winding roads, ESC
cannot always deal as effectively with difficult
driving situations than at lower speeds. Whe n
tow ing a trailer, ESC is not able to help you regain
con trol as it wou ld if you were no t towing a trail­
er .
A lways adjust your speed and dr iving sty le to
road, traffic and weather conditions. ESC cannot
override the vehicle's physical limits, increase the
Smart Technology
available traction, or keep a vehicle on the road i f
road departure is a result of driver inattention.
Instead, ESC improves the possibility of keeping
the vehicle under control and on the road dur ing
extreme maneuvers by using the driver's steering
inputs to help keep the vehicle go ing in the in ­
tended direction. If you are traveling at a speed
that causes you to run off the road before ESC
can prov ide any assistance, you may not expe ri­
ence the benefits of ESC.
ESC is switched on all the time . In certain situa­
t ions when you need less traction, you can switch
off ASR by pressing the button
[ru ~ page 170,
fig. 152 or ~page 170, fig . 153. Be sure to
switch ASR on again when you no longer need
less traction.
T he following systems are integrated in the ESC:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking up when braking. The vehicle can still be steered even dur­
i ng hard braki ng. Apply steady pressure to the
brake pedal. Do not pump the pedal. A pulsing in
the brake pedal indicates that the system is he lp­
ing you to brake the vehicle.
Brake assist system
The brake ass ist system can decrease braking dis­
tance . It increases braking power when the driver
presses the brake peda l quickly in emergency sit­
u at ions. You must press and hold the brake pedal
until t he situat ion is over. In vehicles with adap­
tive cruise control*, the brake assist system is
more sensitive if the distance detected to the ve­
hicle ahead is too sma ll.
Anti-slip regulation (ASR)
ASR red uces eng ine power when the drive wheels
begin to spin and adapts the force to the road
conditions. This makes it easier to start, acce le r­
ate and drive up hills.
Electronic differential lock (EDL)
T he EDL brakes whee ls that are spinning and
transfers the drive power to the other wheels.
T his function is available up to about 60 mph
(100 km/h).
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Smart Technolog y
-Manua l retraction: At speeds up to about
10 mph (20 km/h) , retract the rear spoiler by
pressing and holding the switch. At speeds be­
tween 10 mph (20 km/h) and 75 mph (120 km/h), retract the rear spoiler by tapping
on the switch
Ind icat or light
- Rear sp oile r: sy st em m alfu ncti on
The rear spoiler may not have extended due to a
malfunct ion . This cou ld change the vehicle's driv­
ing characteristics at high speeds . Do not drive at
speeds above 85 mph (140 km/h) . Drive to the
nearest authorized Audi dealer or qualified repair
facility to have the malfunction corrected.
A WARNING
Dr iv ing at higher speeds w ithout the rear
spoiler deployed can impa ir handling charac­
teristics, mak ing the veh icle harder to co ntrol.
- Always make sure that the spoiler is de-
ployed when driving at speeds over 85 mph
(140 km/h) . If the rear spoiler warn ing/ indi­
c ator light in t he instrument cluster comes
on, the rear spoi ler may not have deployed .
- Never dr ive at speeds highe r than 85 mph
(140 km/ h) if the spoiler is not deployed.
Have the spo iler inspected as soon as possi­
ble by an author ized Audi dealer or qualif ied
workshop.
- Always obey speed limi ts and o ther traffic
laws .
A WARNING ,.__.__
Improper ope ration of the rear spoiler can
cause crushing injuries .
- Always make sure that nobody, espec ia lly
children, is in the way when the rear spo iler
is deployed or retracted .
(D Note
Never push the vehicle or apply fo rce to the
rea r spo ile r - i t cou ld be damaged.
(D Tips
Clean the spo ile r compartment every 2 to 3
months. The spoiler compartment m ust al-
172
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ways be free of ice, snow, leaves or other de­ bris .
Braking
What affects braking efficiency?
New brake pads
During the first 250 miles (400 km), new brake
pads do not possess their full braking e ffect, they
have to be "broken in" first¢.&. . The break -in pe ­
riod can be considerably longe r for vehicles with
ceramic brake rotors*. You can compensate for
th is slightly reduced braking power by pushing
harder on the brake pedal. Avoid heavy braking
loads during the b reak-in period.
Op era ting condition s and dri ving h abit s
The brakes on today's automobiles are still sub­
j ect to wear, depending largely on operating con­
dit ions and driving habits ¢.&, . On vehicles that
are either dr iven most ly in stop-and-go city traf­
fic or are driven hard, the brake pads should be
checked by yo ur autho rized Aud i dealer more of­
ten than specified in the
Warranty & Mainte·
nan ce bookl et.
Fail ure to have you r brake pads
i nspected c an resu lt in red uced b rake pe rform ­
ance.
On steep slopes, you shou ld use the braking ef­
fect of the engine. This way, you prevent unnec ­
essary wear on the bra ke system. If yo u must use
you r brakes, do not hold the brakes down contin ­
u ously. Pump the brakes at intervals .
Operating noise
Noises may occur when brakin g depending on the
speed, braking force and ou ts ide cond itions su ch
as tempera ture and hum idity.
Due to the nature of the materials used in ceram­
i c bra ke roto rs*, noises may become mo re appa­
r ent at low speeds.
Effect of water and road salt
In certa in situations, for examp le after driv ing
through water, in heavy rain, after overnight con­
densation or after washing your car , the braking
effect can be redu ced by moistu re or ice on the
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brake rotors and brake pads. The brakes must be
dried first with a few carefu l brake applications .
At h igher speeds and with the w indshield w ipers
turned on, the brake pads press against the brake rotors for a sho rt amount of time. This occurs at
regular intervals without the driver noticing and
prov ides 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. Likew ise, you clean
off accumulated salt coating from brake discs
and pads with a few cautious applications of the
brake ¢,&. .
Due to their surface characteristics, ceram ic
brake rotors* absorb moisture in such conditions.
This can cause a temporary reduction in braking
force compared to dry brakes . You can compen ­
sate for this by press ing the brake pedal harder .
Corrosion
There may be a tendency for dirt to bui ld up on
the brake pads and corrosion to form on the discs
if the car is not driven regularly or only for short
trips with little use of the brakes .
If the brakes are not used frequently, or if corro­
sion has formed on the discs, it is advisable to
clean off the pads and discs by brak ing firmly a
few t imes from a moderately high speed¢& .
Fa ul ts i n the brake sys te m
If you should notice a sudden increase in brake
pedal travel, then one of the two brake circuits
may have failed¢&.
Low brak e flu id l eve l
Malfunctions can occur in the brake system if the
brake fluid level is too low. The brake fluid leve l is
monitored e lectronically.
Brake boo ste r
The brake booster increases the pressure that you
genera te with the brake pedal.
It works only M
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Brake lining wear statu s
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
thro ugh the openings in the wheel. If necessary,
the wheel may be removed for this inspection
¢ page 218, Replacing wheels .
A WARNING ...__
-New brake pads don't have the best stop­
ping power and must be "broken-in" during
the initial 250 miles (400 kilometers) . The
break-in per iod can be cons iderably longer
for vehi cles w ith ceramic b rake rotors*. You
can compensate for this by p ress ing the
b rake peda l more fi rmly. This a lso 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 risk -you may
cause an accident!
-
- Before descend ing a steep grade, reduce
speed and sh ift transmission into a lower
gear or lower dr iving 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 dimin ish braking effic iency .
- Do not "ride the brakes" by rest ing 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 ing distance.
- Under certain cl imatic and operat ing condi­
tions such as passing t hrough water, dr iv ing
in heavy rain or after washing the veh icle,
the effect iveness of the brakes can be re­
duced . In winter, ice can accumulate on the
brake pads, linings, discs and drums . Care­
fu lly 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 without using your
brakes can a lso affect braking efficiency.
Clean off accumulated salt coating from brake discs and pads with a few careful
brake applications.
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Smart Technolog y
-If y ou dama ge the front spo iler, or if you in ­
sta ll a di fferent spoile r, be sure the air flow
to the front brakes is not obstructed . Other ­
wise the brake system co uld overheat reduc­
ing the effectiveness o f the enti re brake sys­
tem .
- Failure of one brake c ircuit will impair the
braking capab ility r esult ing in a n increased
stopp ing distance. Avoid driving the veh icle
and have it towed to the nearest au thorized
Audi de aler or qualified workshop.
- Never let the vehicle ro ll to a stop with the
engine shut off .
-If the brake booster is not work ing, the
brake pedal must be pressed considerably
harder to make up for the lack of booste r as­
sistance .
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps the
driver when steering .
Power steering adapts electronically based on
the vehicle speed .
Indicator lights and me ss a ges
• Steering defe cti ve! Do not dri ve vehicle!
If th is indicator light tu rns on and stays on and
this message appears, the power steering may
have fa iled .
D o
n ot co ntinue driving. See yo ur authorized
Audi dealer or a qua lified repair fac ility for assis ­
tance.
l;r-ij Dynamic steering : System fault! You can
c on tinu e drivin g
If the indicator light tu rns on and the message
appears, the steer ing may be more difficult to
move or mo re sensitive than usual. The steer ing
wheel may a lso be at an ang le when dr iv ing
straight.
Drive s low ly to your author ized Audi dealer or
qua lified wor kshop to have the malfunction cor­
rected.
174
':r-ij Dynamic stee ring: initializing
If this drive r message appears and the indicator
li gh t is flashing on the instr ument pane l, dynam­
i c s teer ing* is being rein itia lized. After sta rting
the engine, the steering wheel w ill move slightly.
Re-initialization might be necessary if the steer­
i ng whee l was moved hard to the left and right
while the vehicle was not moving. The display goes out as soon as initialization is comp lete.
A WARNING
H ave the dynamic steering* system malfunc­
tion repaired as soon as possible by an author­ ized A udi dealer or qualified wo rkshop -risk
of accident!
@ Tips
- If the . or ':rfl indicator light only stays on
for a sho rt time, you may cont inue driving.
- The dynamic steering* stab ility systems are
not availab le in the event of a system mal­
function.
- For add itiona l information on dynamic
steering*, refer to~ page 101.
Driving with your quattro
With all-wheel drive, all four wheels are driven .
General information
With all-wheel drive, power is distributed to all
four wheels . This happens automatically depend­
i ng on your driving style and the road conditions
at the t ime . See also ~ page 169.
A center d ifferential distributes the driving power
variably to the front and rear axle. It works to­
gether w ith select ive whee l torque control, which
activates w hen d rivi ng throug h curves
~ page 170 . With the spo rt diffe rential*, power
dist ribution to the rear wheels is variab le and can
be adjusted with drive select~ page 101.
The all-whee l dr ive concept is des igned for hig h
engine power . Yo ur vehicle is exceptiona lly pow­
e rfu l and has excellen t drivi ng cha racte rist ics
both unde r normal d riving condi tions and o n
snow and ice . Always read and follow sa fe ty pre-
ca utions ~& .
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Driving and the
environment
Breaking in
New engine
The engine needs to be run-in during the first
1,000 miles (1,500 km).
For the first 600 miles (1,000 kilometers ):
"' Do not use full throttle .
"' Do not drive at engine speeds that are more
than
2/3 of the max imum permitted RPM .
From 600 to 1,000 miles (1,000 to 1,500
kilometers):
"' Speeds can gradually be increased to the maxi­
mum perm issible road or engine speed.
During and after break-in period
"'Do not rev the engine up to high speeds when it
is cold. This applies whether the transmission is
in N (Neutral) or in gear .
After the break-in period
"'Do not exceed maximum engine speed under
any circumstances.
"'U pshift into the next higher gear
before reach­
ing the red area at the end of the tachometer
scale
c=> page 10.
During the first few hours of driving, the engine's
internal friction is higher than later when all the
moving parts have been broken in. How well this
break-in process is done depends to a considera­
ble extent on the way the vehicle is driven during
the first 1,000 miles (1,500 kilometers).
(D Note
Extremely high engine speeds are automati­
cally reduced. However, these rpm limits are
p rog rammed for an engine wel l run- in, not a
new engine.
@) For the sake of the environment
Do not dr ive with unnecessarily high eng ine
speeds -upshifting early saves fuel, reduces
noise and protects the environment.
Driving and the environment
New tires
If your vehicle is running on new tires, drive very
carefully for the fi rst 350 m iles (500 kilometers)
after fitting .
New tires tend to be slippery and must also
be "broken-in". Be sure to remember this dur­
ing the first
350 miles (500 kilometers).
Brake gently. Avoid following closely behind
other vehicles or other situations that might
require sudden, hard brak ing .
Avoid damaging the
vehicle
When you are d riving on poor roads, or over
curbs, steep ramps, etc., ma ke certain that low­
lying parts such as spoilers and exhaust system
parts do not bottom out and get damaged.
T his is espec ially true for veh icles with low-s lung
chassis (sports chassis)* and fully loaded
vehicles.
Driving through water on
roads
Note the following to avoid vehicle damage when
driving through water, for example on f looded
roads:
- The water must not be any higher than the bot­
tom of the vehicle body.
- Do not drive faster than walking speed.
A WARNING
= -
After driving through water, mud, slush, etc.,
the brakes may be s low to take effect because
of wet brake rotors and pads. Dry the brakes
first by braking carefully to restore the full braking effect.
(D Note
Vehicle components such as the engine,
transmission, suspension or electrical system
can be severely damaged by driving through
water . ""
177