2013 AUDI S4 brake pads

14 Instrum ent s and w arn ing /indic ato r light s
Engine cooling system Tire pressure monitor ing
¢ page 18
system,/
¢page253
Steering column lock Tire pressure monitoring system
¢ page 18
1181~1 ¢page253
Ignition lock
Im
Electronic power cont ro l ,/
r:::;,page 18
c:>page20
U SA mod els:
•
Malfunction indicator Lamp
Speed warning system (MIL),/
r:::;, page 87
c:> page 20
Canada models :
•
Engine speed limitation
Speed warning system c:>page 21
r:::;,page87 Engine oil level
Adapt ive cru ise control./
•
c:>page 17
¢ page 102
•
Engine o il sensor
Yellow ind ic a to r lights c:> page 21
Yellow symbols indicate a priority 2 ma lfunc-
-
&1
Battery
tion -Warning!
c:>page 17
Jj]
Electron ic Stabilization Control
Ill
Tank system
(ESC) ,/
c:>page 21
r:::;, page 19
-Electronic Stabilization Control
•
Warm up engine *
ti
(ESC) ./ c:>
page 215
r:::;, page 19
•
Windshie ld washer fluid level
U SA m odel s: c:>page 21
~
Anti-lock braking system (ABS)
defective ,/
m
Windshield wipers
r:::;, page 19 c:>page
21
Canada models :
le
Remote control key
[I]
Anti-lock braking system (ABS)
c:>page 83
defective ,/
r:::;, page 19
I!
Battery in remote control key
USA models: c:>page 34
I
Safety systems ,/ --
l:J
Defective light bulb warning ' r:::;, page 20
c:>page 21
Canada models :
El
Safety systems ,/
•
Fog lights
<=>page20 c:>
page 21
•
Worn brake pads
E
Rear fog light(s)*
<=> page 20
c:>page 21
•
Electromechanical parking brake
II
Headlight range control *
<=>page 85
c:> page 22

16 Instrum ent s and w arn ing /indic ato r light s
possible to set the parking brake or release
it once it has been set. Seek professional as ­
s istance .
(USA models): If the warning light
1111 and
the warning light
liJ appear together, imme­
diate ly contact your authorized Audi dealer or
qua lified workshop to have all brake pads in­
spected
¢ page 20.
When the light comes on, an audib le warning
signal is also given .
A WARNING
-Always observe the warnings in
¢ page 213, Engine compartment, be­
fore opening the hood and checking the brake flu id .
- Driv ing with low brake fluid is a safety
hazard. Stop the car and get professional
assistance.
- USA models: If the 1111 warn ing light,
the
G1 warning light and the m;B warn­
ing light come on together, the rear
wheels co uld lock up first unde r hard
braking. Rear wheel lock-up can cause
loss of vehicle con tro l an d an accident .
Have your vehicle repai red immedia tely
by your aut ho rized Audi dea le r or a quali ­
fied workshop. Drive slowly and avoid sudden, hard brake applications.
- Canada models: If the brake warn ing
light ., the
DJ warning light and the
ABS warning light
BJ come on together,
the rear wheels could lock up first unde r
hard braking. Rear wheel lock-up can
cause loss of vehicle control and an acc i­
dent . Have yo ur vehicle repaired immed i­
ately by your authori zed A udi dealer or a
qu alifie d wo rkshop. Dr ive slowly and
avo id su dden, hard brake appli cat ions.
- If the brake warning/indicator light does
no t go out afte r a few se con ds and the
par king brake is released, or lights up
whi le you are driving, the fluid level in
the brake f luid reservoir is too low. If you
believe that it is safe to do so, proceed
immediately at low speed to the nearest
authorized Audi dealer or qualified repair facility and have the brake system in­
spected.
- Always keep in mind that after severa l
brake applications, you will need greater
pressure on the brake pedal to stop your
veh icle. Do not rely on strained brakes to
respond with max imum stopping power
in critical s ituations . You must allow for
increased braking distances. The extra
d istance used up by fading bra kes could
le ad to an ac cident.
:l~/(®) Electromechanical parking brake
The warning/indicator light monitors the
electromechanical parking brake .
If the indicator light . (USA models)/ .
(Canada models) turns on, the pa rking brake
was set. If the parking brake is set when the
ignition is off, the ind icator light turns off af­
ter abo ut 20 seconds.
The wa rning/i ndicator lig ht will go out when
the pa rking brake is re leased .
• (USA models ) /. (Can ada model s) Cau­
tion: Vehicle parked too ste ep
If the indicator light b links and the message
appears, there is not enough braking power to
keep the vehicle from roll ing . The brakes have
overheated . The veh icle cou ld roll away eve n
o n a sma ll incline .
Press brake pedal to release parking bra ke
To re lease the parking brake, press the brake
pedal and press t he button(® or start driving
with starting assist at the same time
¢ page 86.
Please relea se park ing brake
T o re lease the par king b rake manually , p ress
t h e b rake peda l and press the button{®) at
the same time. The pa rking brake on ly releas­
es automatically if the driver's safety be lt is
fastened.
Ill Parking brake!
If the 11,1 indicator light turns on and t his
message appears, the re is a parki ng b rake

20 Instruments and warning /indicator lights
Contact your authorized Audi dealer as
soon as possible.
-USA models: If the la warning light
and the
E warn ing light come on to­
gether, the rear wheels could lock up
first under hard braking. Rear wheel lock­
up can cause loss of vehicle control and
an acc ident. Have your vehicle repaired
immediately by your authorized Audi
dealer or a qualified workshop. Dr ive
slowly and avoid sudden, hard brake ap­
plications.
- Canada models: If the brake warning
light . and the ABS warning light
li]
come on together, the rear wheels could
lock up first under hard braking. Rear
wheel lock-up can cause loss of vehicle
control and an accident. Have your vehi­
cle repaired immediately by your author­
ized Audi dea ler or a qualified workshop.
Drive slowly and avo id sudden, hard
brake applicat ions.
I I !f Safety systems
The fl (USA models),£,1 (Canada models) in­
dicator light monitors the safety systems (e.g.
airbags, pretensioners) and ill uminates for a
few seconds each time you switch the ignition
on.
If the fl (USA models)/ fll (Canada mode ls)
indicator light does not go out, or if it illumi­
nates while you are driv ing, or if it starts to
blink, then there is a ma lfunction somewhere
in the system.
If the light does not illuminate
when you switch the ignition on, this also
means there is a malfunction.
& WARNING
If you have a malfunction in the safety sys­
tems, contact your author ized Audi dealer
immediate ly. Otherw ise the safety sys­
t ems may not work properly in an acci­
dent.
l ) - : USA mod els only
(0) Worn brake pads
EiJ Brake pads!
If the warning light illuminates, immediately
contact your authorized Audi dealer or quali­
fied workshop to have all brake pads inspect­ ed . On USA models the warn ing light
EiJ
comes on together with the warning light
la-Both sets of brake pads on an ax le
must a lways be rep laced at the same time.
A WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the warning light
EiJ and the warning
light
la1 l with the message Brake
pads! comes on in the instrument cluster
d isplay, immediately contact your au­
thor ized 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
funct ion in the engine electronics. Have
the malfunction corrected as soon as pos­
s ib le by your authorized Audi dealer or
qualified repa ir facility.
Ci Malfunction Indicator Lamp (MIL)
T he Malfunction Indicator Lamp (MIL) is par t
of the On-Board Diagnostic (OBD II) system.
-
The symbo l ¢4' lights up when the ignition is
switched on and will turn off after the engine
has started and has settled at a constant idle
IJ>,

188 Intelligent technology
allroad: Switching on /off
ESC turns on automatically when you start
the engine .
Fig. 176 Version A: lower ce nter console,~ OFF but­
to n
...... [ I I n-I _,,. .,., -------' -"~ __..,
Fig. 177 Versio n B: upper ce nter conso le,~ OFF but­
to n
ESC Offroad mode
In order to maintain maximum traction and
optima l brak ing when driving offroad , the
conditions for the ESC to work are reduced to
such a degree, tha t the vehicle whee ls co uld
start to spin . The stabilizing effects start to
work later wh ich results in limited vehicle sta­
b ili ty.
The ESC Offroad mode should on ly be used in
the following situations:
- Rocking the vehicle to free it when it is stuck
- Driving in deep snow or on loose ground
- Driving on rough terra in when much of the
car's weight is lifted off the wheels (axle ar­
t icu lation)
- Driving with snow cha ins
- Driving downhill while braking on loose
ground
F or your safety, switch off the ESC Offroad
mode in advance.
Switching on th e ES C Offroad mode
Press the In OF FI button ¢ fig. 176 or
¢ fig. 177 . The I indicator light turns on and
the message
St abilization cont ro l ( ES C): Off­
ro ad. Wa rning! Rest ricted stability
appears
in the disp lay.
Swit ching off th e ESC Offroad mode
Press the !.$ O FF I button again to sw itch the
ESC back on . The
IJ indicator light turns off
and the message
Stabil ization contro l (ESC ):
On
appears in the display.
_& WARNING
- You shou ld only turn on the ESC Offroad
mode when driving offroad or with snow
chains.
- Drive whee ls can sp in and you can lose
control of the vehicle more easi ly when
ASR and ESC are in Offroad mode, espe ­
cially whe n the road is slippery.
- Switch to Offroad mode only whe n your
driving skills, traff ic and weather condi­
tions permit .
(D Tips
You cannot sw itch Offroad mode on when
adaptive cruise control* is working.
Braking
What affects braking efficiency?
New brake pad s
During the first 250 mi les (400 km), new
brake pads do not possess the ir full brak ing
effect, they have to be "broken in" first¢ .&,.
You can compensate for this slightly reduced
braking power by p ushing harde r on the brake
pedal. Avoid heavy brak ing loads dur ing the
break-in pe riod.
Oper ating cond ition s and driving habit s
The brakes on today's automobiles are still
subject to wear, depending largely on operat ­
ing co nd it ions and driving hab its
¢ .&, . On
vehicles that are either driven most ly in stop-
and-go city traff ic or are dr iven hard, the
lilJ,,

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 .,..
•
•

190 Intelligent technology
to brake. This may cause the brakes to
overheat, premature wear and increased
stopp ing distance.
- Under certain climatic and operating
condit ions such as passing through wa­
ter, driving in heavy ra in or after wash ing
the vehicle, the effect iveness of the
brakes can be reduced . In winter, ice can
accumulate on the brake pads, linings,
discs and drums. Carefully apply brakes
f or a test . B rakes will dry a nd ice coat­
ings will be cleaned off after a few ca re ­
ful brake applications.
- Driv ing for an extended pe riod of time on
salt -covered roads without using you r
brakes can also affect braking efficiency.
Clean off accumulated salt coating from
brake discs and pads w ith a few careful
brake applicat ions.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the air
flow to the front brakes is not obstruct­
ed . O therwise the brake system could
overheat reducing the effectiveness of
the ent ire brake system.
- Failure of one brake c ircuit will impair
the braking capability resulting in an in­ creased stopp ing distance. Avoid driv ing
the vehicle and have it towed to t he near­
est author ized Audi dealer or qualif ied
workshop.
- Never let the vehicle roll to a stop w ith
the engine shut off.
- If the brake booster is not working, for
example when towing your ve hicle, or
because the b rake booste r has somehow
been damaged, the brake pedal must be
pressed considerab ly harder to make up
for the lack of booster assistance.
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps
the driver when steering.
Power steer ing adapts electronically based on
the veh icle speed.
Indicator lights and messages
• Ste ering d efe ct ive ! Do not d rive vehicle!
If this indicator light turns on and stays on
a nd this message appears, the power steering
may have failed .
Do
not continue driving. See your authorized
Audi dealer or other qualified repair facility
for assistance.
'Tij D ynamic steer ing: Sy stem f au lt! You c an
cont inue d riving
If the indicator l ight turns on and the mes­
sage appears, the stee ring may be more diffi­
c ul t to move o r more sensitive than usua l. The
steering wheel may a lso be at an ang le when
driv ing straight.
Drive slowly to your authorized Audi dea ler or
qualified workshop to have the ma lf u nction
corrected.
'Tij Dynamic stee rin g: initializing
If this driver message appears and the indica­
tor light is flashing on the instrument panel, dynamic steer ing* is being re initia lized . On ce
you start the engine after t his is finished, the
steering wheel will be easy to move . Re-initi­
alizat ion might be necessary if the steering
whee l was moved hard to the left and right
whi le the vehicle was not moving. The display
goes out as soon as initiali zation is complete.
A WARNING
-Have the dynamic steering* system mal­
function repa ired as soon as possible by an
authorized Audi dealer or any qualified
workshop - r is k of accident!
-

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 . ..,. •
•

~ Read the brake fluid level from the brake
fluid reservoir ~
fig. 188, ¢ page 221,
fig . 184.
T he brake fluid level must be be ­
tween the "MIN" and "MAX" markings.
The brake f luid reservoir is located at the rear
partition of the engine compartment on the
l eft side
¢ page 221 .
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
l ow the "M IN" mark, the bra ke wa rning/ind i­
cator light (U .S . mode ls:
1111 , Canadian
models: .) will come on
¢ page 15. Do not
continue to operate the vehicle. The complete
brake system shou ld be thoroughly checked
by an authorized Audi dealer or qualified
workshop and the cause co rrected . If the
b rake fluid level is too low, the b rake wa rn ing/
i nd icator lig ht w ill illuminate . Co ntact an a u­
thor ized Audi dealer immediately.
@ Tips
The brake f luid rese rvoir is located unde r­
neath the cove r.
Changing brake fluid
Have the brake fluid changed by an experi­
enc ed technician .
Brake fluid ab sorbs moisture from the a ir. If
the water content in the brake fluid is too
hi gh, corrosion in the b rake system may result
after a per iod of t ime . The bo iling po int of t he
b ra ke fluid w ill also decrease con siderab ly and
d ec rease brak ing per forman ce.
Therefore, the brake flu id must be changed
every two year s. Always use new b ra ke fluid
which confo rms to Fede ral Motor Vehicle
S tand ard "FMVSS 1 16 DOT 4".
The brake flu id rese rvoir can be difficult to
r eac h, therefo re , we recommend that yo u
have the brake fl uid changed by yo ur aut ho r­
iz ed Audi dealer. Your dealer has the correc t
Checking and fillin g 229
tools, the right brake fl uid and t he know -how
to do this for you .
A WARNING
- Brake fl uid is poisonous. It must be stor­
ed only in the closed or iginal container
out of the reach of children!
- Brake failure can res ult from o ld or inap­
propriate brake f lu id. Observe these pre­
cautions:
- Use only brake fluid th at mee ts SA E
spe cificat ion
J 17 03 and conforms to
Fe dera l Mo to r Ve hicl e Standard 1 16.
Always check with yo ur autho rized Au di
dealer to make sure yo u are using the
correct brake fluid. The c orrect type of
brake f luid is also ind icated on t he
brake f luid reservoir .
- The bra ke fl uid must be new. Heavy use
of the brakes ca n cause a vapor lock if
the b rake fluid is left i n the system too
long. This can se riously affect the effi­
c iency of the b rakes as well as your
safety , T his could result in an accide nt.
(!) Note
Brake fluid will damage the pai nt of your
vehicle.
@) For the sake of the environment
Because of the prob lem of proper disposal
of brake fluid as well as the spec ial too ls
r equired an d th e nec essary exper tise, w e
r ecomme nd that yo u have th e brake flu id
c hanged by yo ur aut ho rize d Aud i dea le r.
Battery
General information
U nder normal operating cond itions, the bat­
te ry in your Audi does not need any ma inte­
nance . With
high outside temperat ures or
lo ng da ily drives we recommend that you have
t h e e lectrolyte leve l che cked by an autho riz ed
A udi de aler or qu alified workshop. The elec­
tro lyte leve l should also be checked e ach time
the battery is charged
¢ page 232 . 1J1>
•
•