2013 AUDI S4 brake rotor

brake pads should be checked by your a uthor ­
ized Audi dealer more often than specified in
the
War ranty & M aint enance booklet . Failure
to have your brake pads inspected can res ult
in reduced brake performance.
On steep slopes, you shou ld use the braking
effect of the engine . This way, you prevent un­
necessary wear on the brake system. If you
must use your brakes, do not hold the brakes
down continuously . Pump the brakes at inter ­
vals.
Operating no ise
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 salt
In certain sit uations, for example after driving
through water, in heavy rain, after overnight
condensation or after washing your car, the brak ing effect can be reduced by moisture or
ice on the brake rotors and brake pads. The
brakes must be dried first with a few careful
brake app lications.
At h igher speeds and with the w indshield w ip­
ers turned on, the brake pads press against
the brake rotors for a short amount of time.
This occurs at regula r intervals without the
d river noticing and provides for better brake
response time under wet condit ions.
The effectiveness of the brakes can be reduced
when the vehicle is dr iven on a salt-covered
road and the brakes a re not used . L ikew ise,
you clean off a ccumulated sa lt coating from
brake discs and pads with a few ca utious ap­
p lications of the brake
c:> .&. .
Cor rosion
There may be a tendency for dirt to bu ild up
on the brake pads a nd corrosion to form on
the discs if the car is not dr iven regular ly or
only for short t rips with little use of the
b rakes.
I f the b rakes are not used frequently, or if cor­
r osion has formed on the discs, it is advisab le
t o clean off the pads and discs by brak ing
Int ellig ent technolog y 189
firmly a few times from a moderately h igh
speed
c:> .&. .
Faults in the brake s yst em
If you shou ld notice a sudden in crease in
brake pedal trave l, then one of the two brake
c ircuits may have fai led
c:> .&. .
Lo w brake fluid l ev el
Malfunctions can occur in the brake system if
the brake fluid level is too low . The brake flu id
level is monitored elect ro nica lly.
Brake booster
The brake booster increases the pressure that
you generate with the brake peda l. It works
only when the engine is running
.c:> .&
Brake lining wear statu s
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
through the open ings in the wheel. If neces­
sa ry, the wheel may be removed for th is in ­
spect ion
c:> page 259, Changing a wheel.
A WARNING
- New brake pads don' t have the best 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 should perform braking maneuvers for the purpose of cleaning the brake
system only if road conditions permit.
Other road use rs must not 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
gea r or l ower dr iving range . Do not ride
the brakes or hold t he pedal down too
long or too often . Th is could cause the
brakes to get hot and diminish braking
efficiency .
- Do not " ride the brakes" by res ting you r
foo t on the pedal when you do not intend .,..
•
•

A 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 brak ing effect.
([) 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 switch the engine off when driving
th rough water.
- Keep in mind that oncoming vehicles
may create waves that raise the water
level and make it too deep for you r vehi­
cle to drive th rough safely.
- Avoid dr iving through sa lt water because
i t can ca use corrosion.
Catalytic converter
It is very important that your emission con­
trol system (catalytic converter) is function ­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
11-Always use lead-free gasoline q page 214,
Fuel supply .
"'" Never run the tank down a ll the way to
empty.
11-Never put too much motor oil in your en-
gine
q page 224, ~ Adding engine oil .
11-Never try to push -or tow-start your veh icle .
The catalytic converter is an efficient "clean­ up" device built into the exhaust system of
the vehicle . The catalytic converter burns
many of the pollutants in the exhaust gas be­
fore they are released into the atmosphere .
Drivin g and en vironm ent 195
The exclusive use of unleaded fuel is critically
important for the life of the catalytic convert­
er and proper funct ion ing of the engine.
A WARNING
-
- Do not park or operate the vehicle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other mate rial wh ich can
cause a fir e.
- Do not apply additional undercoating or rustp roof ing on or near the exhaust
manifold, exhaust pipes, catalytic con­
ve rter or heat shields. During driv ing, the
substance used for undercoating co uld
overheat and cause a fire.
(D Note
- Be aware that just one tank filling with
leaded fu el w il l already ser iously de­
gra de the performance of the catalytic
c onverte r.
- Do not ex ceed t he cor rect eng ine oil level
qpage 224.
- Do not drive until the fue l tank becomes
comple tely empty. The engine co uld m is­
fire . Unburned fuel could also get in to
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 moving.
- Do not continue to ope rate your veh icle
unde r these conditions, as otherwise fuel
can reach the catalytic converte r. T his
cou ld result in overheating of the con­
verter, requir ing its replacement.
- To assure efficient operation of the Emis ­
sion Control System:
- H ave you r vehicle maintained prope rly
and in accorda nce w ith the serv ice rec­
ommendat ions in yo ur Warranty &
M ain tenance boo klet.
- L ack of prope r maintenance as we ll as
improper use of the vehi cle w ill impair
the function of the em ission contro l
system and could lead to damage . ..,. •
•

Removing the wheel
"' Remove the topmos t wheel bo lt completely
with the
he xagonal socket in t he screwdriv ­
er hand le (vehicle tool kit) ¢
fig. 207 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 ¢
fig. 208.
"' Then remove the o ther wheel bo lts as de­
scribed above .
"' Take off the wheel leav ing the alignment
pin in the bo lt ho le
~ CD .
Putting on the spare tire
"' all road : Inflate the inflatable spare tire
~ page258
"' Push the spare tire over the a lignment pi n.
"' Screw o n the whee l bolts and tighten them
slightly using the hexagonal socket .
"' Remove the alignment pin and insert an d
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 whee l bolt wrench to t ighten a ll
wheel bolts firmly ¢
page 261. Tighten
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 .
"' Perform the steps requ ired after cha nging
the wheel ~
page 260 , 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 tall ing the wheel,
the rim could hit the brake rotor an d 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? 263
'
tern is po inted the righ t way
¢ page 263.
- 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.
Us ing 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 we t 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 ~ page 24 6, 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,-
•
•

286 Index
Automatic climate control Air vents ... ............... .. .... .. 78
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 77
Setup . .. ............... .. .. .... .. 79
Automatic Shift Lock (ASL) . . . . . . . . . . . . 93
Automatic transmission .......... ..... 91
Automatic Shift Lock (ASL) . . . . . . . . . . . 93
Driving .. ... ............ .. .. .. .. .. 93
Em ergency mode . . . . . . . . . . . . . . . . . . . 97
Em ergency release . . . . . . . . . . . . . . . . . . 98
K ick -down . . . . . . . . . . . . . . . . . . . . . . . . . 96
M anual shift program ....... .... .. .. 96
multitronic . . . . . . . . . . . . . . . . . . . . . . . . 91
Removal lock (ignition key) ... .. .. .. . . 80
Selector lever . . . . . . . . . . . . . . . . . . . . . . 92
S tronic .... .................. ... .. 91
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Automatic wipers . . . . . . . . . . . . . . . . . . . . 53
Auto Safety Hotline ........ .. .. .... . 135
Average speed . . . . . . . . . . . . . . . . . . . . . . . 25
Avoid damaging the vehicle ....... ... . 194
B
Bag hooks . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Battery . . . . . . . . . . . . . . . . . . . . . . . 17,229
Batter y location inside the luggage com-
partment .. ................ ... ... 230
Charging . ... ............ .. .. .. .. . 232
I mportant warnings when wo rking on
the battery ............... ... .... . 230
Jump starting ................ .... . 269
Low ..... .. ................ ..... . 192
Replacing the battery ..... .. .. .... . 233
State of charge .................... 192
Winter operation .................. 229
Working on the battery ......... .... 230
Before driving .............. ... .... . 127
Bio-ethanol (Fuel) . . . . . . . . . . . . . . . . . . . 215
Blended gasoline .......... .. .. .... . 214
Blow er (automatic climate control) . . . . . . 78
Body cavity sealing .............. ... . 208
Booster seats ...................... 174
Brake flu id
Changing the brake fluid ..... .. .. .. . 229
Checking the brake fluid level ... .. .. . 228
Reservoir . ................. ..... . 228 What
is the correct brake fluid level? . . 228
What shou ld I do if the brake fluid warn-
ing light comes on? ................ 228
Brak e system .. .. .. ............. .. .. 228
Anti- lock braking system ........ .... . 19
Brake assist system ................ 185
Brake fluid .... .. ................. 228
Brake fluid specifications for refill and re -
placement .... .. ... .......... .. .. 229
Brake light defective . . . . . . . . . . . . . . . . 21
Brake power assist unit ............. 188
Brakes ...... .. .. .. ..... ........ .. 188
Ceramic brakes . .. ................ . 188
Electromechanica l parking brake . .... . 85
Warning/ind icator lights ........ .. .. . 15
Worn brake pads symbo l . . . . . . . . . . . . . 20
Braking Emergency braking funct ion ........ .. 87
braking guard ... .. ............. .... . 99
Messages . .. .. .. ............. .. .. 107
Settings .. .. .. .. .. .... .... ... .... 106
Break-in period .... ................. 194
T ires ..... .... .. .. .............. . 194
Bulbs .......... .. ....... ......... . 268
C
California Proposition 65 Warning ... .. 220
Battery specific .. ............. .. .. 231
Capacities ......................... 277
Car care ........ .. .. .............. . 202
Interior ... .... .. .. .............. . 209
Plastic and vinyl ................... 206
Care of exterior .. .. ... .......... .. .. 202
Cargo area
refer to Luggage compartment. . . 68, 133
Catalytic converter . . . . . . . . . . . . . . . . . . 195
Center armrest . . . . . . . . . . . . . . . . . . . . . . 60
Central locking .. .. ... .......... .. .. . 32
Central locking switch .......... .... . 36
Convenience key . . . . . . . . . . . . . . . . . . . . 36
Remote control key ................. 35
Ceramic b rake rotors
New brake pads .. ............. .... 188
Certification . . . . . . . . . . . . . . . . . . . . . . . 283
Changing a flat tire . ................. 259
Changing a wheel .. ............. .... 259