2014 AUDI S4 brake rotor

190 Intelligent technology
Operating conditions and d riving hab it s
The brakes on today 's automob iles are st ill
subject to wear, depending largely on operat ­
ing conditions and driving habits
c::> ,& . On
vehicles that are either driven mostly in stop­
and-go city traffic or are driven hard, the
brake pads should be checked by your author­
ized Audi dealer more often than specified in
the
W arranty & M ainte nance booklet . Failure
to have your brake pads inspected can result
in reduced b rake pe rformance.
On steep slopes, you should use the brak ing
effect of the eng ine . This way, you prevent un ­
necessa ry wear on the brake system. If you
must use you r brakes, do not hold the brakes
down continuously . P u mp the b rakes at inter­
va ls.
Operating nois e
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity .
Effect of w ater and ro ad sa lt
In certain situat ions, for example after driving
through wate r, in heavy ra in, after overn ight
condensation or after washing your car, the brak ing effect can be reduced by moistu re or
i ce on the bra ke roto rs and b rake pads . The
b rakes must be dried fi rst with a few ca ref ul
brake app lications .
At h igher speeds and with the w indshie ld w ip­
e rs turned on, the brake pads press agains t
the bra ke rotors for a short amount of time.
This occurs a t 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 sa lt coating from
brake discs and pads with a few caut ious ap ­
plications of the brake
c::> ,& .
Cor rosion
There may be a tendency for dirt to bui ld up
on the brake pads and corrosion to form on the d
iscs if the car is not driven regu larly or
o n Ly for short trips with litt le use of the
brakes.
If t he brakes a re not used frequently, o r if cor­
r os ion 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
c::> .&. .
Fault s in the brak e syst em
If you shou ld notice a sudden increase in
brake pedal trave l, then one of the two brake
circuits may have fai led
c::> .& .
Low br ake fluid lev el
Malfunctions ca n occu r in the b ra ke system if
t h e b rake fluid level is too low. The brake flu id
l evel is monitored electronica lly.
Brake booster
The brake booster inc reases the pressure that
you generate with the b rake peda l. It works
o n ly when the engine is runn ing
.c::> .&
Brake lining wear status
Brake lining wear may be checked by visual in­
spect io n of the condition of the brake pads
th rough the open ings in the wheel. If neces­
sary, the wheel may be removed fo r thi s i n­
spe ct ion
c::> page 255, Changing a wheel.
.&, WARNING
- New b rake pads don' t have the bes t stop­
ping power and m ust be "bro ken -in" dur ­
ing the initial 100 to 150 miles (150 to
200 kilometers) of normal c ity driving.
You can compensate for this by pressing the brake pedal more firmly. Th is also
applies later when new pads are instal­
led.
- You shou ld perform braking maneuvers
for the purpose of cleaning the brake
system only if road conditions permit.
Othe r road use rs must no t be put at risk -
you may ca use 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
~

196 Driving and en vironm ent
8_ WARNING
After driving through water, mud, slush,
etc ., the brakes may be slow to take effect
because of wet brake rotors and pads . Dry
the brakes first by braking carefully to re­
store the full braking effect.
(D Note
Vehicle components such as the engine,
transmiss ion, suspension or electrical sys­
tem can be severely damaged by driving
through wate r.
@ Tips
- Check the depth of the water before dr iv­
i ng through it .
- Do not stop the veh icle, dr ive in reverse
or switc h the engine off when driving
t hr ough water .
- Keep in mind that oncoming vehicles
may c reate waves that raise the water
l evel and make it too deep fo r you r vehi­
cle to dr ive through safely.
-
- Avoid dr iving thro ugh salt water because
i t can ca use corrosion.
Catalytic converter
It is very important that your emission con­
trol system (catalytic conv ert er) is function ­
ing properly to ensure that your vehicle is run­
ning in on env ironm entally sound manner.
,,. Always use lead-free gaso line Q page 209,
Fuel supply .
,,. Never run the tank down a ll th e way to emp ­
ty.
,,. Never put too much moto r oil in your engine
Q page 219, "t':::r. Adding engine oil .
,,. Never try to push -or tow -start your ve hicle .
T he cata lytic converter is an eff ic ient "clean­
up" device built in to the exhaust system of
the vehicle . The catalytic converter burns
many of the polluta nts in the exhaust gas be ­
fore they are released into the atmosphe re . The exclus
ive use of unleaded f uel is critica lly
important for the life of the catalytic conv ert­
er and p roper funct ion ing of the eng ine .
A WARNING
=
-The temperature of the exhaust system
is high, both when driving and after stop­
p ing the eng ine .
- Never touch the exhaust tail pipes once
they have become hot. This could result
in burns.
- Do not park or operate the vehicle i n
areas where the hot exhaust system may
come in co ntact with dry grass, brush,
fue l spill or other material wh ich can
cause a fire .
- Do not app ly additional undercoating or
r u stp roofing on or nea r the exhaust
manifold, exhaust pipes, cataly tic con­
ver ter or he at s hields. Dur ing driv ing, the
substance used fo r undercoating could
overheat and cause a fire.
CI) Note
- Be aware tha t just o ne tank filling with
leaded fu el w ill alre ady ser io usly de ­
grade the performance of the cata lytic
converter .
- Do not exceed the cor rect engine oil level
Q poge 219.
-Do not drive until the fuel t ank becomes
comple tely empty . The engine cou ld mis ­
fire . Unburned fuel could also get into
the exhaust system and th is co uld cause
the catalytic converter to overheat.
- Do not turn off the ignition while the ve­
hicle is mov ing.
- Do not contin ue to ope rate your veh icle
under these conditions, as otherwise fuel
can reach the catalyt ic converter. Th is
co uld result in overheating of the con­
verter, requir ing its replacement.
- To assure efficient operation of the Emis -
sion Control System: .,..

Vehicl e ca re a nd cl eanin g 205
A WARNING
-Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operator to reduce the risk of accidents .
- To reduce the r isk of cuts, protect your­
self from sharp metal components when
wash ing the underbody or the inside of
t he wheel housings.
- After washing the vehicle, the braking ef­
fec t may be delayed due to mo isture on
the brake rotors or ice in the winter. The
brakes must be dried first with a few
careful brake applications.
Q) Note
- If you wash t he vehicle in an automatic
car wash, yo u must fold the exterior m ir­
rors in to reduce the r is k of damage to
the mirrors. Power folding exterior mir­
rors* must only be folded in and out us­
ing the power folding function.
- To prevent paint damage, do not wash
the vehicle in direct sunlight . -
To reduce the risk of damage to the sur­
face, do not use insect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted vehicle compo­
nents:
- To reduce the risk of damage to the surface, do not use polishing agents or hard wax.
- Never use car wash cycles that apply protective wax.
It can destroy the
matte fi nish effect.
- Do not place any stickers or magnet ic
signs on vehicle parts painted w ith
matte fi nish paint. The paint cou ld be
damaged when the stickers o r magnets
are removed.
@ For the sake of the environment
Only wash the vehi cle in facilities spec ial ly
designed for that purpose . This will red uce
the risk of dirty water contam inated with
oil from entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehi­
cle components, refer to the fo llow ing tables .
The information contained there is s imply rec­
ommendations. For quest ions or for compo- nents
that are not listed, refer to an author­
ized Audi dea ler or qualified workshop. A lso
fo llow the information found inc>,& .
Cle anin g exter ior
Component Situation Solution
Wiper b lades
Dirty i=> page 54, Cleaning windshield wiper blades
Headligh ts / Dirty Soft
sponge with a m ild soap solutional
tail light s
S ensor s/
Dirty Sensors: soft cloth with a solvent-free cleaning product
camera l enses Camera lenses: soft cloth with an alcohol-free cleaning
solution
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road sa lt Water
Brake dust Acid-free special cleaning solution
Exhau st t ail Road sa lt Water, cleaning solut ion suitable for sta inless steel, if
pi pes necessary
•
•

Removing the wheel
"' Remove the topmos t wheel bolt completely
with the
he xagonal socket in t he screwdriv ­
er hand le (vehicle tool kit)
c::> fig. 205 and
set it aside on a
clean surface.
"' Screw the threaded end of the
alignment
pin
from the tool k it hand-tight into the
empty bolt hole
c::> fig. 206.
"'T hen remove the other wheel bo lts as de­
scribed above .
"'T ake off the wheel leav ing the alig nment pin
i n t he bolt hole
c::> CJ).
Putting on the spare tire
"' allroad : Inflate the inflatable spare tire
c::> page 254
"' Push the spare tire over the a lignment pin.
"' Screw o n the w heel bolts and tighten them
slightly using the hexagonal socket.
"' Remove the alignment pin and insert and
t ighten the remaining whee l bo lt s light ly
Li ke the rest.
"' Turn the jack handle counter-clockw ise to
lower the vehicle unt il the jack is f ully re­
l eased .
"' Use the wheel bolt w rench to t ighten all
whee l bolts firmly
c::> page 25 7. Tig hten
them
in a crisscross pattern, from one bo lt
to the (approx imately) opposi te o ne, to keep
t h e whee l cen te red.
"'P erfo rm the steps req uired after changing
t h e whee l
c::> page 256, After changing a
wheel .
The hex agonal so cket m akes it easier to re­
move the w heel bo lts from the r im . Care
should be taken when removing the reversible
b lade .
@ Note
When removing or ins tal ling the wheel,
the rim could hit the brake rotor and dam­
age the rotor . Wor k carefully and have a
second person to he lp you.
@ Tips
- When mounting tires with unidirectional
tread design
ma ke s ure the tread pat-
What do I do now? 259
'
tern is po inted the righ t way
c::>page 259.
- The w heel bolts shou ld be clean an d easy
to t urn . Check fo r dirt an d corrosion on
the mating surfaces of both the w heel
and the hub. Remove all d irt from these
surfaces before remounting the whee l.
- Do not use the hexagonal socket in the
sc rewd river handle to loosen or t ighten
the whee l bolts.
Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in
the right direction.
U si ng a spa re tire with a tread pattern
intended for use in a specific di rection
When using a spare t ire with a tread patter n
intended for use in a spec ific d irection, please
note the following :
- The d irect ion of rotation is marked by an
ar­
row on the side of the t ire .
-If the spare tire has to be insta lled in the in­
correct d irect ion, use the spare tire only
temporarily s ince the tire will not be able to
achieve its optimum performance cha racte r­
istics w it h regard to aquap la ni ng, no ise and
wear .
- We recommend that you pay part icu lar at­
t en tion to th is fact during wet weather and
that you adjust your speed to match road
condi tions.
- Replace the flat t ire wi th a new one a nd
have it insta lled o n you r vehicle as soo n as
pos sible to res to re the hand ling advant ages
o f a u nidirec tional tire.
Notes on wheel changing
Please read t he info rmation c::> page 242 , New
tires and replacing tires and wheels
if yo u a re
going to use a spare tire wh ich is different
from the tires on your vehicle.
After yo u change a tire:
IJI,-
•
•

Automatic climate control Air vents ... .... .. .... ... .. .. .. .... 78
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 77
Setup ... .. ................. .. .... 79
Automatic S hift Lock (ASL) . . . . . . . . . . . . 93
Automatic transmission ......... ... ... 91
Automatic S hift Lock (ASL) . . . . . . . . . . . 93
D riving .. .. ............. .... .. .. .. 9 3
E mergency mode . . . . . . . . . . . . . . . . . . . 97
E me rgency release . . . . . . . . . . . . . . . . . . 98
Kick -down . . . . . . . . . . . . . . . . . . . . . . . . . 96
M anual shift program .. ... .. .. .. .. .. 96
Remova l lock (ignition key) ... .. .. .. .. 80
Selector lever . . . . . . . . . . . . . . . . . . . . . . 92
Automatic wipe rs . . . . . . . . . . . . . . . . . . . . 53
Auto Safety Hotline ............. .... 136
Average speed . . . . . . . . . . . . . . . . . . . . . . . 25
Avoid damag ing the vehi cle .. .. .. .. .. . 195
B
Bag hooks . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Battery . . . . . . . . . . . . . . . . . . . . . . . 17,225
Battery location inside the luggage com -
partment .. .. ........... .. .. .. ... 225
Charging . ................ ... ... .. 227
Important war nings when wo rking on
the battery . ................ ... ... 225
J ump starti ng ............ .... .. .. . 266
L ow . .. .. .. .. .. ........... .. .. ... 193
Replacing the ba ttery .. ... .. .. .. .. . 228
State of charge . ....... ... .. .. .. ... 193
Winter operation . ..... ... .. .. .. .. . 225
Working on the battery .... .. .. .. .. . 225
B efore dr iving ............. .... .. .. . 128
Bio-ethanol (Fuel) ..... ..... .. .. .. .. . 210
Blended gasoline ... .... ... .. .. .. .. . 209
B lower (automatic climate cont rol) . . . . . . 78
Booster seats ............. .... .. .. . 175
B rake fl uid
C hanging the brake fl uid ... .. .. .. .. . 224
Chec king the brake fluid level ... .. .. . 224
Reservoir .. ............. .... .. ... 224
What is the correct brake flu id leve l? . . 224
What should I do if the brake fluid warn-
i ng light comes o n? .. ..... .. .. .. .. . 224
Inde x 281
Brake system . ..... ... .. .. ..... ... .. 224
Anti- lock b raking system ..... ... .. .. . 19
B rake assist system .. .. ..... ... .. .. 186
Brake fluid .. .. .. ................. 224
Brake fluid specifications for refill and re-
placement ...... .. ............... 224
B rake light defective ... .. .. ... ... .. . 21
B ra ke powe r ass ist unit ............ . 189
Br akes .. .. .. .. .. .. . .............. 189
Ce ram ic bra kes . .. .... ........... .. 189
El ec tromechanica l parking brake ... .. . 85
Warning/indicator lights ..... ... .. .. . 15
Wor n brake pads symbo l . . . . . . . . . . . . . 20
B ra kin g
E mergency b ra ki ng f unction ..... .. .. . 87
braking guard . . . . . . . . . . . . . . . . . . . . . . . 99
Messages . . . . . . . . . . . . . . . . . . . . . . . . 107
Settings ........ .. ............... 106
Break -in per iod .. .. .... ............. 195
Tires ... .. .. .. .. .. ............... 195
Bul bs . ... .. .. .... .. . .. .. ..... ... .. 2 64
C
Califor nia Proposition 65 War ning . .. .. 215
B attery spec ifi c .. ............. .. .. 226
Capacities ........ .. ............... 273
Carbon pa rts
Cleaning . . . . . . . . . . . . . . . . . . . . 206, 207
Care ..... .. .. .. .... ... .......... .. 20 4
Cargo a rea
refer to L uggage compartment . . . 68, 134
Catalytic converter ... .. ...... ... .. .. 196
Cen te r armrest . . . . . . . . . . . . . . . . . . . . . . 60
Central lock ing .. .. ................. . 32
Cen tral lock ing switch ............. .. 36
Co nvenience key . . . . . . . . . . . . . . . . . . . . 36
Remote cont ro l key . ........... .... . 35
Ceram ic brake rotors
New brake pads .. ............. .... 189
Ce rtification . ... .... . ... ...... ... .. 278
Chang ing a flat t ire . .. ... ....... .... . 255
Chang ing a wheel .. ............. .... 255
Chang ing engine oil ............. .... 220
Checking Engine coolant level .... ....... .... . 221
Checking t ire pressure ............... 237
•
•