2013 AUDI RS5 CABRIOLET four wheel drive

Emergency braking
In the event that the conventional brake sys­tem fails or locks .
11-In an emergency, pull the switch @
r:::;, page 79, fig. 92 and cont inue to p ull it to
slow your veh icle down with the park ing
brake.
11-As soon as you release the sw itch @ or ac-
c e le rate, the braking p rocess stops.
If you pull t he sw itch @and hold it above a
speed of about 5 mph (8 km/h), the emergen­
cy braking fu nction is in itiated. The vehicle is
b raked at a ll four wheels by activating the hy ­
d ra ulic brake system. The b rake performance
is simi lar to making an emergency stop
r:::;, &. .
In o rder not to activate the emergency brak­
i ng by m istake, an a udible warning tone (b uz­
zer) sounds when the switc h @ is pu lled . As
soon as the switch @is released, or the accel­
erator pedal is depressed, emergency brak ing
stops.
A WARNING
Emergency braking should only be used i n
an emergency, when the normal foot brake
has failed or the brake pedal is obstructed.
Using the parking bra ke to perform emer­
gency braking will slow you r vehicle down
as if you had made a fu ll brake applicat ion.
The laws o f physics cannot be s uspended
even w ith ESC and its associated compo­
nents (ABS, ASR, EDS). In corne rs and
when road or weather conditions a re bad,
a full brake application can cause the vehi­
cle to skid or the rear end to break away -
r isking an accident.
Speed warning system
Overview
The speed warning system helps you to keep
your driving speed below a set speed limit.
The speed warning system warns if the driver
exceeds a prev iously stored maximum speed .
A wa rning tone wi ll sound as soon as the vehi-
On th e ro ad 81
cle speed exceeds the set speed by about
3 mph (3 km/h). At the same time, a warning
symbol appears in the display. The symbo l's
appearance might be different in some mod­
els.
The speed warning system has two warning
th resholds that funct ion independent ly of
each other and that have somewhat different purposes:
Speed warning 1
You can use speed warning 1 to set the maxi­
mum speed while you are driving. This setting
will remain in effect unti l yo u turn off the ign i­
tion, assuming that you have not changed or reset the setting.
The . (USA mode ls)
I. (Canada mode ls)
speed warning symbo l in the warning 1 dis­
play appears when you exceed the maximum
speed . It goes out when the speed falls be low
the sto red maximum speed .
The speed warn ing symbol will also go out if
the speed
exceeds the stored maximum speed
by more than about 25 mph (40 km/h) for at
least 10 seconds . The stored max imum speed
is deleted.
Speed w arning 2
Storing warning 2 is recommended if yo u al­
ways
want to be reminded of a certain speed,
for example whe n you are trave ling in a coun­
try that has a general maximum speed limit,
o r i f you do not want to exceed a specified
speed for w inte r tir es.
The . (USA models) /. (Canada models)
speed warning 2 symbol appears in the dis ­
play when yo u exceed the stored speed limit.
Unlik e warning 1, it will not go out unt il the
vehicle speed dro ps below the s to red speed
li mi t.
Setting speed warn ing 2
¢ page 82.
(!) Tips
Even though your vehicle is equ ipped w ith
a speed war ning system, you sho uld still

178 Intelligent technolog y
@ Tips
-ABS and ASR on ly work correctly when
a ll four wheels are eq uipped w ith identi­
ca l tires . Different tire s iz es can lead to a
r educt io n in engine power .
- You may hear no ises w hen the systems
described are wo rking.
- If the indicato r light
DJ or 11:11 (U SA
models) 1i] (Canada models) appears,
there may be a malf unct io n ¢
page 19,
c> page 19.
Switching on/off
ESC turns on au toma tically when you s tart
the engine.
Fig . 16 9 Ver sio n A : low er c ente r co nso le,~ OFF bu t·
to n
Fig . 17 0 Ve rsio n B: u ppe r ce nter conso le, ~ OFF but ­
to n
Switching sport mode on
Press the I;; OF F I button ¢ fig. 169 o r
c::> fig. 170 quickly. The act ions taken by the
E SC and ASR stabilize the vehicle a re limited .
T he
IJ ES C in dicator light tu rns on and the
me ssage
Stabilization control (ESC) : Sport .
Warning! Restricted stability
appe ars in the
d river info rmation disp lay
c::> A .
The following e xamp les are unusual situa­
t io ns whe re it may ma ke sense to switch s port
mode on in order to allow the wheels to sp in:
- Ro cking the vehicle to free i t when i t is s tuck
- Dr iv ing in deep snow o r on loose g round
- Dr iving with snow chains
Sport mode can be sw itched on at a ny speed .
Switching ESC/ASR off
Press a nd ho ld the I~ OFF I but ton for three
secon ds. The
lfil•)H and fl indicator lights
turn on and the message
Stabilization con­
trol (ESC) : off. Warni ng! Restricted stability
appears in the driver information display.
AS R is also switched off when ESC is switched
off . The stabilizat ion function is not ava ilable
c> A .
Switching on
Press the !.i, O FF I button ag ain to sw itch the
ESC back on . The
I indicator lig ht tu rns off
and the message
Stabilization control (ESC ):
On appears in the display.
A WARNING ,-
- Drive whee ls can sp in and you can lose
control of t he vehicle mo re eas ily w hen
ASR and ESC are in sport mode , especial­
ly whe n the road is slippe ry .
- Sw itch to sport mode only when your
driving skills, traffic an d weather condi ­
tions per mit.
@ Tips
You cannot sw itch sport mode on whe n
adaptive c ruise co ntrol* is w ork in g.
Braking
What affects braking efficiency?
New brake pads
D uring the first 250 mi les (400 km), new
brake pad s do not possess the ir full b rak ing
effect, they have to be "broken in" first¢ &.
The break- in period can be considerably lon-
-
ger for ve hicles w ith ceram ic b rake rotors* . ll>

';'ij Dynamic stee ring : initi alizing
If th is driver message appears and the ind ica­
tor light is flash ing on the inst rument pane l,
dynamic steering* is be ing reinitialized. Once
you start the engine after this is finished, the
steering whee l wi ll be easy to move. Re-initi­
alization m ight be necessary if the steering
wheel was moved hard to the left and r ight
while the veh icle was not moving. The display
goes out as soon as initialization is complete .
A WARNING
Have the dynamic steering* system mal­
function repaired as soon as poss ible by an
authori zed Audi dealer or any qualified
workshop -risk of accident!
@ Tips
- If the . or 1~ ij indicator light only stays
on for a short t ime, you may continue
driving.
- The dynamic steering* stability systems
are not available in the event of a system
malfunction.
- For additional informat ion on dynamic
stee ring*, refer to
c::> page 104.
Driving with your
quattro ®
With all-wheel drive, all four wheels are driv­
en.
G ene ral inform ation
W ith all -whee l dr ive, power is distributed to
all fo ur wheels. This happens automatica lly
depending on your driving sty le and the road
conditions at the time . See also
c::> page 176.
A center diffe rent ial distr ibutes the dr iv ing
power variably to the front and rear axle.
It
works together with se lective wheel torque
control, which activates when driving through
curves
c::> page 177. W ith the sport d ifferen ­
tial*, power distribution to the rear wheels is
variable and can be adjusted with drive select
<=:> page 104 .
Intellig ent technolog y 181
The all -whee l drive concept is designed for
high engine power. Your vehicle is exception­
ally powerfu l and has excellent driving charac­
teristics both under normal driv ing cond itions
and on snow and ice. Always read and follow
safety precaut ions
c::> ,&. .
Winter t ires
When driving in the winter, yo ur vehicle with
a ll-wheel drive has an advantage, even w ith
regular tires. In winter road conditions it may
be advisable to mount winter tires (or all-sea­
son tires) for improved driveability and brak ­
ing: these tires must be mounted on
a ll fou r
wheels. See also c::> page 23 7, Winter tires.
Tire chains
Where tire chains are mandatory on certain
roads, this normally also applies to veh icles
with all -wheel drive
c::> page 238, Snow
chains .
Replacing whee ls / tires
Vehicles with a ll-wheel drive must always
have tires of the same s ize. Also avoid tires
with different tread depths. For deta ils see
page
~ page 233, New tires and replacing
tires and wheels .
Off-Road driving?
Your Audi does not have enough ground clear­
ance to be used as an off-road vehicle. It is
therefore best to avoid rough tracks and un ­
even terrain as much as possible . Also refer to
~ page 184.
A WARNING
Always ad just your dr iv ing to road and t raf­
fi c condi tions. Do no t let the extra safety
afforded by all-wheel drive temp t you into
taking extra risks.
- Al tho ugh t he all-wheel drive is very ef­
fective, always remember that braking capacity is lim ited by tire traction . You
should therefore not d rive at excessive
speeds on icy or slippery road surfaces.
•
•

Speed rating (letter code)
means the speed at wh ich a tire is des igned to
be driven for extended periods of t ime . The
ratings range from 93 mph (150 km/h) to
186 mph (298 km/h)
¢page 234. You may
not find this information on all tires because
it is not required by law.
The speed rating letter code, where applica­ b le, is molded on the tire sidewall and indi­
cates the maximum permissible road speeds
¢ &. in Winter tires on page 238.
Tire pressure monitoring system*
means a system that detects when one or
more of a vehicle's tires are underinflated and
illuminates a low tire pressure warn ing te ll­
tale .
Tread
means that port ion of a tire that comes into
contact with the road.
Tread separation
means pulling away of the tread from the tire
carcass .
Treadwear indicators (TWI)
means the projections within the pr incipal
grooves designed to give a visual ind ication of
the degrees of wear of the tread. See
¢
page 232, Tread Wear Indicator (TWI) for
mo re inf ormat ion on measuring tire wear.
Uniform Tire Quality Grading
is a tire information system developed by the
United States National Highway Traffic Safety
Admin istration (N HTSA) that is designed to
help buyers make relative comparisons among
tires . Th e U TQG is not a safety rating and not a
g ua ran tee that a tir e will last for a prescribed
number of mi les (kilometers) or perform in a
certain way. It simply gives tire buyers addi ­
tional information to combine with other con-
Tires and wheels 225
siderations, such as price, brand loyalty and
dealer recommendations. Under UTQG, tires
are graded by the t ire manufacturers in three
areas : treadwear, traction, and temperature
resistance. The UTQG informat ion on the tires,
molded into the sidewalls .
U.S. DOT Tire Identification Number (TIN)
This is the tire's "serial number". It begins
with the letters "DOT" and indicates that the
tire meets all federa l standards. The next two
numbers or letters indicate the plant where it
was manufactured, and the last four numbers
represent the week and year of manufacture.
For example,
DOT ... 2212 ...
means that the tire was produced in the 22nd
week of 2012. The other numbers are market­
ing codes that may or may not be used by the
tire manufacturer. This information is used to
contact consumers if a tire defect requires a
recall.
Vehicle capacity weight
means the rated cargo and luggage load plus
150 lbs . (68 k ilograms) times the vehicle's to­
tal seating capacity as listed on the label lo­
cated on the driver's side B -pillar .
Vehicle maximum load on the tire
means that load on an individual tire that is
determined by distributing to each axle its
share of the maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual tire that is
determined by distributing to each ax le its
share of the curb weight, accessory weight,
and normal occupant weight (distr ibuted in
accordance with table below¢
page 226)
and dividing by two.
•
•

232 Tires and wheels
Tire service life
The service life of tires depends on a lot of
different things including proper installation
and balancing, correct tire pressure and driv­
ing style.
F ig. 1 87 Tire tread: tre ad wea r ind icators (TWI)
_____ __,.J)
F ig. 1 88 Rotat ing t ires for more ev en wea r
Tread Wear Indicator (TWI)
The o rigi na l t ires on your veh icle have
1/16 inch (1.6 mm) high "wear indicators"
c::> fig . 187 running across the tread. Depend ­
i ng on the make, there will be six to eight of
them evenly p laced around the t ire. Marks on
the tire sidewa ll (for example "TWI" or other
symbols) indicate the positions of the tread
wear ind icators . Worn t ires must be replaced .
Different fig ures may apply in o ther countries
c::> & .
Tire p ressure
Incorrect tire pressure causes premature wear
a nd can cause sudden t ire blow-out. For t his
reason, tire pressure must be checked at least
once a month
c::> page 228 .
Driving style
Driving fast aro und curves, heavy acce leration
and hard braking increase tire wear.
Rotating tires for more even wear
F or all four tires on your ve hicl e to h ave the
same service life, we recommen d that t he
front and rear t ires are rotated according to
the tire manufact urer's suggested tire rota­
tion intervals. Please remember the follow­ ing :
- Tire rotation intervals may differ from the
vehicle service inte rva ls o utlined in your
Ma intenance and Warranty Book let .
- The longer one tire is used in one location
on the vehicle, the more it wears at certain
points; therefore, we recommend that you
follow the tire manufact urer's suggested
tire rotation intervals .
- Vehi cles w ith front-wheel dr ive experience
more tread wear on the fro nt w heels com­
pa red to all wheel d rive (quattro ®).
- Please rotate tires as shown
c::> fig. 188.
-Extra care must be taken when rotating di-
rection-specific tires
c::> page 250 .
Wheel balancing
The wheels on new ve hicles are balanced .
However, various situations during everyday
driving can cause them to become unba l­
anced, re sulting in vibrat ions you can usually
feel through the steer ing wheel.
Un balanced whee ls must be rebalanced to
avo id excessive wear on steering, suspension
and t ires. A whee l m ust also be reba lanced
when a new tire is insta lled.
Incorrect wheel alignment
Incor rect w heel alig nment can cause exces ­
sive tire wear, impairing the safety of the veh i­
cle . If tires show excessive wear, have the
whee l alignment checked by an aut hori zed
Audi dealer or qualif ied workshop .
All wheel drive
Vehicles with q uattro ® mus t always have tires
of the same size, construction and tread type .
For details see
c::> page 181. ..,.

236 Tire s and whee ls
vehicle handling and can lead to a loss of
control.
- If the replacement tire is not the same as
the tires that are mounted on the vehicle
- for example with winter tires - only use
the replacement t ire for a short period of
t ime and dr ive with extra care . Refit the
normal road wheel as soon as safely pos­
sible.
- Never drive faste r than the maximum
speed for which the tires on your veh icle
are rated because ti res that are driven
faster than their rated speed can fail
sudden ly.
- Overloading t ires cause heat build-up,
sudden tire failure, including a blowo ut
and sudden deflation and loss of control.
- T emperature grades app ly to tires that
are properly inflated and not over or un­
derinflated.
- For technical reasons it is not a lways
possible to use wheels from othe r
vehicles -in some cases not even wheels
from the same vehicle model.
- If you install wheel trim discs on the ve­ hicle whee ls, make sure that the air f low
to the brakes is not blocked . Reduced air­
flow to the brakes can them to overheat, increasing stopping distances and caus­
ing a collision .
- Run flat tires may only be used on
vehicles that were equipped w ith them
at the factory . The vehicle must have a
chassis des igned for run flat t ires and a
factory-installed t ire pressure monitor­
ing system* that indicates a loss of ti re
pressure. Incorrec t use of run flat tires
can lead to vehicle damage or accidents .
Check with an authorized Audi dea ler or
tire spec ialist to see if your vehicle can be
equipped with run flat tires . If run flat
tires are used, they must be installed on
all four wheels. M ixing tire types is not
permitted .
(D Note
-For technica l reasons, it is not genera lly
possible to use the wheel r ims from oth- er vehicles.
This can hold true for wheels
of the same vehicle type.
- If a rep lacement tire is different from
the tires that you have mounted on your
vehicle (for example winter tires or wide profile tires), then use the rep lacement
tire for a short period of time only and dr ive with extra care. Replace the flat tire
w ith the tire match ing the others on your
vehicle as soon as possible.
- Never drive without the valve stem cap .
The valves could get damaged .
® For the sake of the environment
D ispose of o ld tires in accordance with the
local requirements .
Uniform tire quality grading
-Tread wear
- Traction AA A B C
- Tempe rature ABC
Quality grades can be found where applicab le
on the t ire s ide wall between tread shou ld er
and maximum section width c> page 233,
fig. 189 .
For exampl e: Tread wear 200 , Traction AA,
Temperature A.
All passenger car t ires must conform to Feder­
al Safety Requirements in addition to these
grades.
Tread wear
T he tread wear grade is a comparative rating
based on the wear rate of the t ire when tested
u nder controlled conditions on a specified
government test course .
For example, a tire graded 1S0 would wear
one and one ha lf (11/2) times as well on the
gover nment course as a t ire graded 100 .
The relative performance of tires depends upon the actual conditions of their use, how­
ever, and may depa rt s ignificantly from the
norm due to va ria tions in d riving hab its, serv­
ice practices and differences in road character-
istics and climate.
ll-