traction control AUDI RS5 CABRIOLET 2015 Owners Manual

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Transmission S tronic
Introduction
The automat ic transm iss ion is controlled elec­
tronically. The transmiss ion upshifts or down­
shifts automatically depend ing on which drive
p rogram is se lected.
When a
moderate driving sty le is used, the
transmission selects the most econom ica l
d riving mode.
It w ill then change up early and
de lay the downshifts to g ive better f uel econ ­
omy .
The transmis sion swi tches to a sporty mode
after a k ick-down or when the dr iver uses a
sporty driving sty le characterized by quick ac­
celerator peda l movements, heavy accelera­
tion, frequent changes in speed and traveling
at the maximum speed.
If desired, the drive r can a lso se lect the gears
manually ( tiptronic mode ) ~ page 87.
The S tronic is a dual-clut ch tra nsmission.
P ower is transfe rred using two clutches that
work independently from one another . They
rep lace the torq ue converter used in conven­
tional automatic transmiss ions and allow the
vehicle to accelerate without a noticeable in­
terruption in traction.
Selector lever positions
F ig. 96 Display in the instrument cluster: se lector lever
in pos itio n P
The selector lever position engaged appears
n ext to the selector leve r as well as in the in­
strument cluster display.
Tran sm iss ion 83
P -Park
In this se lector lever posi tion the transm is­
s ion is mechanica lly locked. Engage P on ly
when the vehicle is
completely stopped~&.
in Driving the automatic transmission on
page 85.
T o shift in or out of pos it ion P, yo u must first
press and ho ld the brake pedal and then press
the re lease button in the selector leve r hand le
whi le moving the selector lever to or from P.
You can shift out of this position only with the ignition o n.
R - Reverse
Se lect R on ly when the veh icle is at a full stop
and t he engine is running at idle speed~.&. in
Driving the automatic transmission on
page 85.
Before you move the se lector lever to R, press
both the re lease button in the hand le o f the
selector lever
and the brake pedal at the same
time.
When the ignition is on, the backup lights illu­
minate when the selector lever is moved into
R.
N -Neutral
The transmiss ion is in neu tral in this pos ition .
S hift to t his position fo r standing with the
brakes app lied
~ .&. in Driving the automatic
transmission on page 85.
When the vehicle is stat iona ry or a t speeds
below 1 mph (2 km/h), yo u must always app ly
the footbrake before and whi le mov ing the
l ever o ut of
N.
DIS -Normal posit ion for driving forward
In the D/S pos it ion, t he tr ansmission c an be
operated either in the norma l mode D or in
the sport mode S . To select the sport mode S,
pull the selector lever back briefly. P ulling the
l ever back again will se lect the norma l mode
D. The instr ument cluster disp lay shows the
selected driving mode. ..,_

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@ Tips
Your vehicle may be equipped with Audi
connect. Your use of certain Aud i connect
features req uires wireless serv ices that are
provided by a third party wireless telecom­
municat ions provider. For details regard­
ing how information obtained through
Aud i connect is collected, processed,
transmitted, used, and shared, please see
your contra ct w ith the wire less telecom ­
municat ions provider and the "About A udi
connect" tab in your vehicle's MMI*:
!MENU ! button> Audi connect > About
Audi con nect .
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidd ing and loss of veh icle control. It works
only when the eng ine is running. ESC detects
certain difficult driv ing situations, including
when the vehicle is beginning to spin (yaw) out of cont ro l and he lps you to get the vehicle
back under control by select ively b rak ing the
wheels, and/or red ucing engine power and
p roviding steering assistance to help hold the
ve hicle on the driver's intended course . The in­
dicator light
DJ in the instrument cluster
blinks when ESC is taking action to help you
control the vehicle.
ESC has limitations.
It is important to remem­
ber that ESC cannot overcome the laws of
phys ics. It will not a lways be able to help out
under all conditions you may come up against.
For example, ESC may not always be able to
help you master situat ions where there is a
sudden change in the coefficient of fr iction of
the road surface. When there is a sect io n of
d ry road that is s udden ly cove red with water,
slush o r snow, ESC canno t perform the same
way it would on the dry su rface.
If the vehicle
hydroplanes (rides on a c ush ion of water in­
stead of the road surface), ESC wi ll not be
ab le to he lp you steer the veh icle because con-
Int ellig ent technolog y 171
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered .
D uring fast corner ing, particular ly on wind ing
roads, ESC cannot always deal as effectively
with difficult dr iv ing s ituations than at lower
speeds. When towing a trailer, ESC is not able
to help you regain control as it would if you
were not tow ing a trailer.
Always adjust your speed and driving style to road, traffic and weather conditions . ESC can­
not override the vehicle's physical lim its, in­
crease the availab le tract ion, or keep a veh icle
o n the road if road departu re is a result of
driver ina ttent io n. Instead , ESC imp roves the
poss ibility of keep ing the vehicle under con­
trol and on the road during extreme maneu­
vers by using the driver's steering i nputs to
help keep the vehicle go ing in the intended di­
rect ion. If you are traveling at a speed that
causes you to run off the road before ESC can
provide any assistance, you may not experi­
ence the benefits of ESC.
ESC is switched on all the time. In certain sit­
uat ions when you need less traction, you can
switch off ASR by pressing the butto n
[ill
~ page 173, fig. 166 or~ page 173,
fig. 167. Be sure to sw itch ASR on aga in when
you no lo nger need less traction.
The following systems are integrated in the
ESC:
Anti-lock bra king sy stem (ABS )
ABS prevents the whee ls from locking up
when brak ing. T he vehicle can st ill be steered
even dur ing hard braking. App ly steady pres­
su re to the brake peda l. Do not pump the ped­
al. A pulsing in the brake pedal ind icates that
the system is helping you to brake the veh icle .
Brake assi st system
The brake ass ist system can decrease braking
distance. It increases brak ing power when the
drive r presses the brake peda l quickly in emer­
gency s ituations. You must press and hold the
brake pedal unti l the s ituation is over. In
vehicles with adaptive c ruise control*, the
brake assis t system is more sensitive if the
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capacity is limited by tire traction. You
should therefore not drive at excessive
speeds on icy or slippery road surfaces.
- On wet road surfaces, be careful not to
dr ive too fast because the front wheels
cou ld beg in to slide on top of the water
(aquaplaning) . If this should occur, you
will have no warning from a sudden in­
crease in engine speed as with a front·
wheel drive vehicle . A lways d rive at
speeds wh ich are suited to the road con­
ditions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimi zes the
availabili ty of electrical energy for s tarting
the engine .
If a vehicle with a conventional energy system
is not driven for a long period of time, the bat­
tery is discharged by idling current consumers
(e .g . immobilizer) . In certain c ircumstances it
can result in there being insufficient energy
avai lab le to start the engine.
Intell igent energy management in your vehi­
cle hand les the d istribution of electrical ener ·
gy. Starting ab il ity is markedly improved and
the life of the battery is extended .
Basically, energy management consists of
battery diagno sis, idling current manag e­
m ent
and dynamic en erg y manag ement.
B attery diagnosi s
Battery diagnosis continuously determines
the state of the battery. Sensors determ ine
battery vo ltage, battery current and battery
temperature . This determ ines the current
state of charge and the powe r of the battery.
Idling current management
Idling current management reduces energy
consumption while the vehicle is s tand ing.
W ith the ignition switched off, it contro ls the
energy supply to the various electr ica l compo·
Int ellig ent technolog y 177
nents . Data from batte ry diagnos is is cons id ­
ered.
Depend ing o n the ba ttery's state of cha rge ,
individ ua l cons umers are g radually turned off
to prevent excessive discharge of the battery
and t hus maintain sta rting capability.
Dynamic energy management
While t he vehi cle is being d riven, dynamic e n­
ergy ma nagement dis trib utes the energy ge n­
era ted accord ing to the needs of the individ u­
al components. It regulates consumption, so
that more e lectrical energy is not bei ng used
than is being generated and ensures an opti­
mal state of charge for t he battery.
(D Tips
- But even ene rgy management cannot
negate the limits of physics. Consider
that the power and life of a battery are
limited.
- If start ing ability is threatened, the indi­
cator light (•) ::ippears
¢ page 16.
What you should know
The highest priority is given to maintaining
star ting capability.
The battery is severe ly taxed in short-distance
driving, in city traff ic and during the cold time
of year. Ab undant electrica l energy is re­
quired, but on ly a little is generated . It is also
critical if the engi ne is not running and electri­
ca l components are turned on . In this in ­
stance ene rgy is be ing consumed but none is
being ge nerated .
It is in precisely these situations that you will
notice energy management active ly regu lat ·
ing the d istribut ion of energy .
Vehicle stands for an extended period
If you do not drive your vehicle over a period
of several days or weeks, e lectr ica l compo­
nents are gradually cut back or switched off.
This reduces energy consumption and ma in·
ta ins start ing capability over a longer period .
Some of the convenience func tions may not .,.
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236 Tires and wheels
@ For the sake of the environment
Dispose of old tires in accord­
ance with the local require­
ment s.
Uniform tire quality grading
- Tread wear
- T raction
AA A B C
- T emperature ABC
Quality grades can be found where applicable
on the tire side wall between tread shou lder
and max imum sect ion width
¢ page 230,
fig. 186.
For example: Tread wear 200, Tract ion AA ,
Temperature A.
All passenger car tires must conform to Feder­
al Safety Requirements in addition to these
grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course .
For example, a tire graded 150 would wear
one and one half (1 1/2) times as well on the
government course as a tire graded 100.
The relat ive performance of t ires depends
upon the actua l conditions of their use, how­
ever, and may depart significantly from the norm due to var iations in dr iving habits, serv­
ice practices and differences in road character­
istics and climate .
Traction
The traction grades, from highest to lowest,
are AA, A, Band
C. Those grades represent the
tire's abil ity to stop on wet pavement as
measured under controlled cond itions on
specified government test surfaces of asphalt
and concrete . A tire marked C may have poor
traction performance ¢&,. .
Temperature
The temperature grades are A (the highest),
B, and C, representing the tire's resistance to
the generation of heat and its ability to dissi­
pate heat when tested under controlled condi­
tions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the
material of the tire to degenerate and red uce
tire life, and excessive temperature can lead
to sudden tire failure
¢ &,..
The grade C corresponds to a level of perform ­
ance which all passenger car tires must meet
under the Federal Motor Vehicle Safety Stand­
ard No. 109. Grades Band A represent higher
levels of performance on the laboratory test
wheel than the minimum required by law .
A WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning or peak traction
characteristics.
A WARNING
The temperature grade for this tire is es ­
tablished for a tire that is properly inflated
and not overloaded. Excessive speed, un­
derinflation, or excessive loading, either
separately or in combination, can cause
heat buildup and possible tire failure.
Winter tires -
Winter tires can improve vehicle handling on
snow and ice . At temperatures below 45 °F
(7 °C) we recommend changing to winter
tires .
In some heavy snow areas, local governments
may require true winter or "snow" tires, those
with very deeply cut tread . These tires should
only be used in pairs and be installed on all
four wheels. Make sure you purchase snow
tires that are the same size and construction
type as the other tires on your vehicle. .,.