2015 AUDI S4 brake pads

14 Instruments and warning/indicator lights
TPMS
smsoR
Electronic Stabilization Control
( ES C) ./
¢page 18
Electronic Stabilization Control
(ESC)
¢ page 185
USA models:
Anti-lock braking system (ABS)
defective ./
¢ page 19
Canada models:
Anti-lock braking system (ABS)
defective ./
¢ page 19
USA models:
Safety systems ./
¢page20
Canada models:
Safety systems ./
¢ page20
Worn brake pads
¢ page 20
E lectromechanical parking brake
¢ page 16
T ire pressu re monitoring
system ./
¢ page258
Tire pressure monitoring system
¢page258
E lectronic power control./
¢ page20
Malfunction indicator Lamp
(MIL) ./
¢ page 20
Engine speed limitation
¢ page20
Engine oil leve l
¢ page 17
Engine oil sensor
¢page 21
Battery
¢ page 16
Tank system
¢ page 21 Warm
up eng ine*
¢ page208
Windshield washer fl uid leve l
¢page21
Windshield wipers
¢page 21
Remote control key
¢page85
Battery in remote control key
¢page33
Defective light bulb warning
¢ page21
Fog lights
¢page 21
Rear fog light(s)*
¢page21
Headligh t range control*
¢page21
Adaptive light*
¢page22
Light-/rain sensor *
¢ page22
Adaptive dampers*
¢page22
Sport differential*
¢page22
I gnition lock
¢page 22
Steering column lock
¢page 18
Electromechanical steering, dy­
namic steering *./
¢pag e 190
Transmission
- mult itronic, t iptron ic
¢page99
- S tronic
¢ page 99
Transmission
- S tronic
¢ page 99

Instruments and warning/indicator lights 15
Other indicator lights
-------------
Turn signals
¢page 22
USA models: Cru ise control
¢ page 91
Canada models: Cruise control
¢ page 91
Adaptive cruise control*
¢page 104
Adaptive cruise control*
¢page 104
High beam
¢page 50
BRAKE/( ([)) Brake system
The light illuminates when the ignition is
switched on.
It goes out after the eng ine has
been started. This ind icates that the brake
warn ing light is func tioning properly.
If the brake warning light does not light up
when the engine is cranking, there may be a
malfunction in the electrical system. In this
case, contact your authorized Audi dealer.
If the brake system warning/ind icator light
turns on, there is a brake system malfunction.
1111 (USA models) tlll (Canada models)
Stop vehicle and check brake fluid level
If the indicator light turns on and the mes­
sage appears, proceed as follows:
~ Pull off the road.
~ Stop the vehicle .
~ Turnoff the engine.
~ Check the brake fluid level¢ page 221.
~ Contact your nearest authorized repair fa-
c ili ty if necessary .
Warning! Fault in brake system . Contact
dealer
If the ABS indicator light fl1 (USA models)/
ii] (Canada models), the ESC indicator light
G1 and the brake system indicator light
1111 (USA mode ls)/ . (Canada models) turn
on and the message appears, the ABS, ESC
and braking distribution are not working~& .
Carefully drive to your authorized Audi dealer
immediately to have the malfunction correct ­
ed ~& .
1111 (USA models )/. (Canada models)
Parking brake system fault! See owner's
manual
- I f the ind icator light and the message ap­
pear
when stationary or after switching the
ignition on,
check if you can re lease the
parking brake. After releasing the parking
brake, carefully drive to your authorized
Audi dea ler immediately to have the ma l­
function corrected. If you cannot release the
parking brake, seek professional assistance.
- If the indicator light and the message ap­
pear
while driving , the emergency brak ing
function may not be available. It may not be possible to set the parking brake or release
it once it has been set . Seek profess ional as­
sistance .
(USA models): If the warning light
1111 and
the warn ing light
EiJ appear together, imme­
diately contact your authorized Audi dealer or
qualified workshop to have all brake pads in­
spected
~ page 20.
When the light comes on, an aud ible warning
s ignal is also given .
A WARNING
-Always observe the warn ings in
¢
page 212, before opening the hood
and checking the brake flu id.
- Driving with low brake fluid is a safety
hazard. Stop the car and get professiona l
assistance.
- If the
1111 (USA models) tlll (Canada
models) brake system indicator light
turns on together with the ABS and ESC
indicator lights, the ABS/ESC regulating
function may have failed. Functions that
stabilize the vehicle a re no longer avai la-
ble. This could cause the vehicle to .,.

20 Instruments and warning /indicator lights
vehicle repaired immediately by your au­
thorized Audi dealer or qualified work­
shop. Drive slowly and avo id sudden,
hard brake applications.
~ J!f Safety systems
The
II (USA models)/ m (Canada models) in­
d icator light monitors the safety systems (e .g .
a ir bags, pretensioners) and illuminates for a
few seconds each time you switch the ignition
on.
If the
ffl (USA models)/ EI (Canada models)
indicator light does not go out, or if it illumi­
nates whil e you are driv ing, or if it sta rts to
b link , then there is a malf unction somewhere
in the system. If the light does not illuminate
when you switch the ignition on, this also
means there is a ma lfunction.
A WARNING
If you have a malfunction in the safety sys­
tems, contact your authorized Audi dealer
immediately . Otherwise the safety sys­
tems may not work properly in an acci­
dent .
(0) Worn brake pads
Ell Brake pads!
If the warning light illumina tes, immediately
contact your authorized Audi dealer or quali ­
fied workshop to have all brake pads inspect­
ed. On USA models the warning light
Ei'I
comes on together with the warn ing light
1111 -Both sets of b rake pads on an axle
must always be replaced at the same time .
A WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the warning light
Ell and the warning
light
11111 ) with the message Brake
pads! comes on in the instrument cluster
l) - : USA mod els only
-
display, immediately contact your au­
thorized Audi dealer or qualified work­
shop to have all brake pads checked or replaced if necessary.
EPC Electronic power control
This warning/indicator light monitors the
electronic power control.
The ~ warning/indicator light (Electronic
Power Control) illuminates when you switch
the ignition on as a function check.
(D Tips
If this warning/indicator light illuminates
while you are driving, then there is a mal­
function in the engine electronics. Have
the malfunct ion corrected as soon as pos­
sible by your authorized Audi dealer or a
qualified repair facility.
0 Malfunction Indicator Lamp (MIL)
Th e Ma lfunction Indicator Lamp (MIL) is part
of the On-Board Diagnostic (OBD II) system.
T he symbo l¢• lights up when the ignition is
switched on and will turn off after the engine
has started and has settled at a constant idle
speed. This indicates that the MIL is working
properly.
T he warning light illuminates when there is a
malfunction in the engine electronic system .
Contact your authorized Audi dea ler and have
the malfunction corrected.
An improperly closed fuel filler cap may a lso
cause the MIL light to illuminate
~ page 210.
For more information ~page 29.
!?; Engine speed limitation
Applies to vehicles: with engine speed limitation
(II Do not exceed max. engine speed of
XX.XX rpm

188 Intelligent technology
allroad: ESC level s
Offroad mode on Offroad mode off
Behavio r
The ESC and ASR stabilization functions The fu ll stabilization f unction of the ESC
are limited ¢& .
Op eration Press the I.a OFFI button .
Indicato r II turns on.
light s
Driver me s- Stabilization control (ESC) : Offroad .
s age s Warning! R est rict ed stabilit y
It is only possib le to turn off the ASR up to 30
mph (SO km/h) for veh icles with front whee l
d rive. At about 45 mph ( 70 km/h) it a utomat i­
cally turns on aga in . It is possib le to turn off
the ASR at any speed for vehicles with all
wheel drive.
A WARNING
You should only switch sport mode/off­
road mode on o r switch ESC/ASR off if your
driving abilities and road cond itions per­
m it .
- The stabilization function is limited
when sport mode/offroad mode is switched on. The d riving wheels could
spin and the vehicle could swerve, espe­
ci ally on s lick o r sli ppery ro ad sur faces.
- all road: You should o nly sw itch off road
mode on when driving offroad.
- Sedan: Th ere is no vehicl e stabiliza tion
w hen ESC/AS R are switched off .
(D Tips
ESC/ASR cannot be sw itched off or sport
mode/offroad mode cannot be switched
on when cru ise control or adapt ive cru ise
contro l* is sw itched on .
Braking
What affec ts braking efficiency?
New brake pads
During the first 250 miles (400 km) , new
b rake pads do not possess their fu ll braking
effect, they have to be "broke n in" first ¢,& .
You can compensate fo r th is sligh tly redu ced and ASR is availab
le agai n.
Press t he
I.a OFF I button aga in.
II turns off.
Stabil izati on c ontrol (ESC ): On
braking powe r by p ushing harder on the bra ke
peda l. Avoi d heavy bra king lo ads dur ing the
break -in pe riod.
Operating conditions and driving habits
T he brakes o n today 's automobiles a re still
s u bject to wear, depe nding largely on ope rat­
i ng condi tions and driving habi ts¢ ,&. On
vehicles that are ei ther dr iven most ly in stop­
and -go city traffic or are dr iven hard, the
brake pads should be checked by your author­
ized Audi dea ler mo re often than specified in
the
Warranty & Maintenance booklet . Failure
to have your brake pads inspected can result in reduced brake performance .
On steep slopes, you sho uld 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 cont inuous ly. Pump the brakes at inter­
vals.
Operating noi se
Noises may occur when braking depending on
the speed, brak ing force and outside cond i­
t ions such as temperature and humidity.
Effect of water and road salt
In certain situations, for examp le afte r driving
t hr ough water, in heavy rain, after overnight
condensation or after wash ing your car, the
braking effect can be reduced by moisture o r
ice on the brake rotors and brake pads. The
brakes must be dr ied first wi th a few ca reful
brake applicat io ns.
At higher speeds and with the windsh ield wip-
ers turned on, the brake pads press against
ll>

'"" N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
the brake rotors for a short amount of time.
This occurs at regular intervals without the
driver noticing and provides for better brake response time under wet condit ions.
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 cautious ap­
plications of the brake
i:> ,& .
Co rrosion
There may be a tendency for dirt to build up
on the brake pads and corrosion to form on
the discs if the car is not dr iven regularly or
only for short trips with little use of the
brakes .
If the brakes are not used frequently, or if cor­ rosion has formed on the discs, it is advisable
to clean
off the pads and discs by brak ing
firmly a few times from a moderately high
speed
i:> ,& .
Fa ult s in the brake system
If you should notice a sudden increase in
brake pedal travel, then one of the two brake
circu its may have failed
i:> ,& .
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 electronically .
Brake boo ste r
The brake boos ter increases the press ure that
you generate with the brake pedal. It works
only when the engine is running
. ¢ .&
Brake lining w ear statu s
Brake lining wea r may be checked by visual in­
spection of the condi tion of the brake pads
through the openings in the whee l. If neces ­
sary, the whee l may be removed for this in­
spection
c> page 263, Changing a wheel .
Intellig ent technolog y 189
A WARNING
-New brake pads don't have the best stop­
ping power and must be "b roken -in" dur­
ing the initial 100 to 150 miles (150 to
200 kilometers) of normal c ity dr iving .
You can compensate for this by pressing the brake pedal more firmly. This also
applies la ter when new pads are instal­
led.
- You should per form braking m aneuvers
for the purpose of cleaning the brake
system only if road conditions permit .
Other road users must not be p ut 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 lower dr iving range. Do not ride
the brakes or hold the 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 rest ing your
foot on the pedal when you do not intend
to b rake. This may cause the brakes to
overheat, p remature wear and increased
s topping distance .
- Unde r ce rtain climatic and ope rat ing
conditions such as passing thro ugh wa ­
ter, dr iv ing in heavy rain o r after washing
the vehicle, the effectiveness of the
brakes can be reduced. In winter, ice can
accumu late on the brake pads, linings,
discs and drums. Carefully app ly brakes
for a test. Brakes w ill dry and ice coat­
ings w ill be cleaned
off after a few care­
fu l brake applicat ions .
- Driving for an extended period of time o n
salt-cove red roads without using your
brakes can a lso affect braking efficiency .
C lean
off accum ulated salt coa ting from
br ak e disc s and pad s wi th a few ca re ful
bra ke applications.
- If you damage the front spoiler, or if yo u
install a diffe rent spoiler, be s ure the ai r
f low to the front brakes is not obstruct­
ed . Otherw ise the bra ke system could •
•

194 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 207,
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 216, ~ 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 216.
-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: .,..

M N
~ co
rl I.O
"' rl
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Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
N
N
;:;;
" 03
"'
Fi g. 186 Eng ine compartment: Cover on the brake flu ­
id reservoi r
Before you check anything in the engine com­
partment,
a lwa ys read and heed a ll W ARN­
ING S c:> .&.. in Working in the engine compart­
ment on page 212 .
~ Read the brake fluid level from the brake
fluid reservoir
c:> fig. 186, <=> page 214,
fig . 182.
The brake flu id level must be be­
tween the "MIN" and "MAX" markings.
The brake fluid reservoir is located at the rear
partition of the engine compartment on the
left side
<::;> page 214 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads . This is not cause for alarm .
If the brake fluid level falls
considerably be­
low the "MIN" mark, the brake warning/indi­
cator light (U.S. models:~, Canadian
models: .) will come on
r:> page 15. Do not
continue to operate the vehicle. The complete b rake system shou ld be thoroughly checked
by an authorized A udi dealer or qualified
workshop and the cause co rrected . If the
b rake fluid level is too low, the brake warn ing/
indicator light w ill illuminate. Contact an au­
thorized Audi dealer
immediately .
@ Tips
The brake f luid reservoir is located under­
neath the cover .
Checking and fillin g 221
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician.
Brake fluid absorbs moisture from the air. If
the water content in the brake fluid is too
high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also dec rease considerably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
every two years. Always use new brake flu id
which conforms to Federal Motor Vehicle
Standard "F MVSS 116 DOT 4".
The brake fluid reservo ir can be d iff icult to
reach, the refore, we recommend that you
have the brake fluid changed by your author­
i zed
Audi d ealer. Your dealer has t he correct
tools, the right brake fl uid and t he know-how
to do this for you .
A WARNING -.
-Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake f luid. Observe these pre­
cautions:
- Use only brake fluid that meets SAE
spe cificat ion
J 1 7 03 and conforms to
Federa l Moto r Ve hicl e Standard 116.
Always check with yo ur authorized Audi
dealer to make sure yo u are using the
correct bra ke fluid. The correct type of
brake f luid is also indicated on the
brake f luid reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong. This can seriously affect the effi­
c iency of the brakes as well as your
safety. Th is cou ld resu lt in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle .

"' N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Automatic climate control Air vents ... ..... ..... ... .. .. .. .... 80
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 79
Setup ... .. ................. .. .... 81
Automatic S hift Lock (ASL) .. .. .. .. .. .. 95
Automatic transmission . . . . . . . . . . . . . . . 93
Automatic S hift Lock (ASL) . . . . . . . . . . . 95
D riving .. .. ............. .... .. .. .. 95
E mergency mode . . . . . . . . . . . . . . . . . . . 99
E me rgency release ........ .. .. .. .. . 100
Kick -down . . . . . . . . . . . . . . . . . . . . . . . . . 98
M anual shift program .. ... .. .. .. .. .. 98
Remova l lock (ignition key) ... .. .. .. .. 82
Selector lever . . . . . . . . . . . . . . . . . . . . . . 94
Automatic wipe rs . . . . . . . . . . . . . . . . . . . . 55
Auto Safety Hotline . . . . . . . . . . . . . . . . . 134
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damag ing the vehicle .. .. .. .. .. . 193
B
Bag hooks . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
Battery . . . . . . . . . . . . . . . . . . . . . . . 16, 222
Battery location inside the luggage com -
partment .. .. ........... .. .. .. ... 222
Charging . ................ ... ... .. 224
Important warn ings when working on
the battery . ................ ... ... 222
J ump starti ng ............ .... .. .. . 274
L ow . .. .. .. .. .. ........... .. .. ... 19 1
Replacing the ba ttery .. ... .. .. .. .. . 225
State of charge . . . . . . . . . . . . . . . . . . . . 191
Winter operation . ..... ... .. .. .. .. . 222
Working on the battery .... .. .. .. .. . 222
B efore driving ............. .... .. .. . 126
Bio-ethanol (Fuel) ..... ..... .. .. .. .. . 208
Blended gasoline ... .... ... .. .. .. .. . 207
B lower (automatic climate cont rol) . . . . . . 80
Booster seats ............. .... .. .. . 173
B rake fl uid
Changing the brake fl uid ... .. .. .. .. . 22 1
Checking the brake fluid level ... .. .. . 221
Reservoir .. ............. .... .. ... 221
What is the correct brake flu id leve l? . . 221
What should I do if the brake fluid warn-
i ng light comes o n? .. ..... .. .. .. .. . 221
Inde x 289
Brake system . ..... ... .. .. ..... ... .. 221
Anti- lock b raking system ..... ... .. .. . 19
•
B rake assist system .. .. ..... ... .. .. 185 •
Brake fluid .. .. .. ................. 221
Brake fluid specifications for refill and re-
placement ...... .. ............... 221
B rake light defective ... .. .. ... ... .. . 21
B ra ke powe r ass ist unit ............ . 188
Br akes .. .. .. .. .. .. . .............. 188
Ceram ic bra kes . .. .... ........... .. 188
El ec tromechanica l parking brake ... .. . 87
Warning/indicator lights ..... ... .. .. . 15
Wor n brake pads symbo l . . . . . . . . . . . . . 20
B ra kin g
E mergency bra king f unct ion ..... .. .. . 89
braking guard . .. .... ... ....... ..... 101
Messages . . . . . . . . . . . . . . . . . . . . . . . . 109
Settings ........ .. ............... 108
Break -in per iod .. .. .... ............. 193
Tires ... .. .. .. .. .. ............... 193
Bul bs . ... .. .. .... .. . .. .. ..... ... .. 2 72
C
Califor nia Proposition 65 Warn ing . .. .. 213
B attery spec ifi c .. ............. .. .. 223
Capacities ........ .. ............... 281
Carbon pa rts
Cleaning . . . . . . . . . . . . . . . . . . . . 204, 205
Care ..... .. .. .. .... ... .......... .. 202
Cargo area
refer to L uggage compartment . . . 70, 132
Catalytic converter ... .. ...... ... .. .. 194
Cen te r armrest . . . . . . . . . . . . . . . . . . . . . . 62
Central lock ing .. .. ................. . 31
Cen tral lock ing switch ............. .. 35
Co nvenience key .. .. . .. .. .. ... ... .. . 35
Remote cont ro l key . . . . . . . . . . . . . . . . . 34
Ceram ic brake rotors
New brake pads .. ............. .... 188
Ce rtification . ... .... . ... ...... ... .. 286
Chang ing a flat t ire . .. ... ....... .... . 263
Chang ing a wheel .. ............. .... 263
Chang ing engine oil ............. .... 217
Checking Engine coolant level .... ....... .... . 218
Checking t ire pressure ............... 239