2018 AUDI S3 SEDAN brakes

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(D Tips
-Side assist is not active w hile you are mak­
i ng the ad justment.
- Your settings are automatically stored and
ass igned to the remote control key being
used.
Rear cross-traffic assist
App lies to: vehicles with rear cross-traff ic assist
Fig. 14 2 Example display
Fig. 143 Infotainment system: rear cross -traffic ass ist dis ­
play
Activating rear cros s-traffic assist
The rear cross- traffic assist is ac tivated a utomat i­
cally if you t urn on the pa rking aid
¢ page 143 or
shift into reverse gear.
The rea r cross- traffic assist can warn t he drive r of
a potential collis ion with approaching cross-traf­
f ic when driving in reverse at speeds up to ap­
proximately 7 mph ( 12 km/h). Within its limits,
the system monitors the areas behind and next
to the veh icle using the radar sensors when leav­
ing a parking space
c:> page 137, fig . 141. Moving
objects that are approaching, such as cars, are
detected
c:> fig . 142.
If the system detects cr itical cross traffic when
backing out of a parking space, it will react as fol­
lows:
A ssi st a nce systems
- Visual indicator : an indicator appears in the In ­
fotainment system disp lay with a red arrow
symbo l. The arrow points in the d irect ion from
which the object is
approaching ¢ fig. 143.
-Audible warning signal : a continuous tone may
sound as an addit ional indicator when dr iving in
reverse.
- Automat ic brake acti vation : a brief activation
of the brakes may also warn you of a potent ial
collision w ith an approaching object.
The audib le warning signal and the automatic
bra ke activation occur only when driv ing in re ­
verse.
A WARNING
-- The rear cross-traffic assist is an assist sys­
tem and cannot prevent a co llision by itself .
The drive r must always intervene . T he d river
is always respons ible for b raking at the cor­
rect t ime.
- Please note that the rear cross-traff ic assist
may activate the b rakes unexpe cted ly. Se­
cure a ny cargo th at you are transpor ting to
redu ce t he risk of damage or i njury.
- An add itiona l brake activation may be t rig­
ge red w ith in 10 seconds after an automatic
b rake activation.
- I f the re is an acoustic wa rn ing s ignal from
the rea r cross-traffic ass ist, t hen the p ark­
ing sys tem may not warn you of detected
obstacles under certain circumstances.
- The v iew o f the radar sensors may be im­
pa ired by leaves, s now, heavy sp ray or dirt.
Clean the area i n front of the sensors
c:>page 137, fig. 141 .
A WARNING
-
-The rear cross -traffic assist will not provide
alerts if your vehicle is pulled too far into
the parking space so that it is hidden by ad­
jacent vehicles.
- The rear cross-traffic assist will not provide
alerts about people a nd can not warn you
about every type of approaching objects,
such as cyclists. Always monitor the t raff ic
as we ll as the vehicle's sur roundi ngs wit h di-
re ct eye contact .
~
139

Assistance systems
-The rear cross-traffic assist will not provide
alerts if the veh icle is in a paralle l parking
space or an angled parking space.
(LlJ Note
Also read the information in <=:>@ in General
information on page 138 .
(D Tips
-You can cancel the automa tic brake activa ­
tion with increasing braking force if you ap­
ply the brakes yourse lf or accelerate consid ­
erab ly.
- In some situations, rear cross-traffic assist
may warn you even if there is no cross traffic
i n a critical area, for example when backing
i nto a parking space or maneuver ing.
- The rear cross-traffic assist also switches off when you switch off the ESC.
- The system is not available when towing a
trailer.
Messages
A pp lies to: ve hicles w ith Audi side assis t
If the side assist sw itches off automatically, a
message appears in the instrument cluster dis­
play.
@j Aud i side assist: malfunction! Please contact
Service
The system cannot guarantee that it wi ll detect
veh icles correctly and it has switched off. The
sensors have been moved or are faulty. Have the
system checked by an authorized Audi dealer or
author ized Audi Service Facility soon .
(ij Audi side assist: currently unavailable. No
sensor view
(ij Audi side assist: currently unavailable. Sen­
sor vision restricted due to surroundings. See
owner 's manual
The radar sensor vis ion is impaired . Do not cover
the area in front of the sensors with bike wheels,
stickers, dirt or other objects. C lean the area in
front of the sensors, if necessary
c> page 13 7,
fig . 141.
140
(ij Audi side assist: currently unavailable
Sid e assist cannot be switched on at this time be­
cause there is a malfunction (for ex am ple, the
battery charge level may be too low).
@j Audi side assist: unavailable in towing mode
(ij Audi side assist: unavailable in towing mode
Side assist switches off automatically after a
short time when a factory-insta lled trai ler hitch
i s connected to the electr ica l connector on the
trailer. There is no guarantee the system will
switch off when using a retrofitted trailer hitch .
Do not use side assist when tow ing a tra iler .
[I! Rear parking aid : obstacle detection restrict­
ed
The rear cross-traffic assist is not available . Ei ­
ther t he ESC is switched off, or the radar sensors
may be covered by a bike rack, stickers, leaves,
snow or other objects. Switc h the ESC on, or
clean the area in front of the sensors if necessary
<=:>page 137 , fig . 141. If th is message continues
to be displayed, dr ive immed iate ly to an author­
iz ed Audi dealer or authorized Audi Se rvice Facili­
ty to have the malfunction repaired.
Audi drive select
Introduction
App lies to : vehicles wi th Audi drive se lec t
Audi drive select makes it poss ible to experience
different types of vehicle settings in one vehicle.
The dr iver can select from three modes,
Comfort ,
Auto
and Dynamic , using the ~.'/:.1 button in the
center console or by using the Infotainment sys­
tem. This allo ws you to switch between a sporty
and a comfo rtable driving mode, for example. In
the
Individual* mode, the settings can be adjust ­
ed to your personal preferences . This makes it
possible to comb ine settings such as a sporty en­
gine setting with light steering.
Description
Applies to: vehicles wit h Audi drive se lect
The vehicle setup in each mode depends on the
vehicle 's features. However, the engine and
steering are a lways affected .

Intelligent Technology
Intelligent Technology Electronic Stabilization
Control (ESC)
Description
Elect ronic stabili zation control ( ESC) supports
driver safety. It red uces the risk of slipping and
improves dr iving stabi lity. ESC detects crit ica l sit­
uations such as the vehicle overstee ring and un­
dersteeri ng or the w heels are sp inning. The vehi­
cle is stabilized by app lying the brakes or reduc ­
i n g e ngine torque . When the ESC engages, the
G1 indicato r light bli nks in t he instr ument clus­
t er.
The fo llow ing systems are in tegrated in the ESC:
Anti-lock braking system (ABS)
ABS p reve nts the whee ls from lock ing whe n brak ­
ing. The vehicle can st ill be steered even d uring
hard brak ing. Apply steady press ure to the bra ke
pedal. Do not pump the pedal. A puls ing in t he
b rake pedal indicates that the system is act ing to
s tabili ze the vehicle .
Brake assist system
The brake assist system can decrease brak ing dis­
tance . It inc reases brak ing power when the d river
presses the brake pedal q uick ly in eme rgency sit­
uations . You must press and hold t he b rake pedal
until the dangerous si tuatio n is ove r. In veh icles
w ith adapt ive c ruise con trol*, the bra ke assist
sys te m is more sensitive if t he di stan ce detec ted
t o the veh icle dr iv ing ahead is too small.
Anti-Slip Regulation (ASR)
ASR reduces eng ine power when the drive wheels
beg in s pinning a nd adapts the force to the road
conditions . T his makes it easie r to sta rt, acceler­
a te and dr ive u p hill s.
Electronic differential lock (EDL)
The EDL applies the brakes to a whee l t h at starts
sp inning and transfe rs t he d rive power to t he
other d riving wheel or wh eels ( if the veh icle is
eq uipped w ith all whee l dr ive*) . T his func tion is
no t a vailable at hig her s pee ds .
148
In extreme cases, ED L automat ica lly swi tches off
to keep the b rake o n the bra ked whee l from over ­
h eating. The ve hicle is still wo rking co rrect ly. ED L
will switc h on again automatically when condi­
tions have returned to normal.
Power steering
The ESC can also support veh icle sta bility
th ro ugh stee ring .
Selective wheel torque control
Selective w heel to rque cont rol is used when driv­
in g on curves. The fron t whee l on the in side of
t h e curve or both whee ls on t he i nsid e of the
cu rve are braked se lective ly as needed. This al ­
l ows mo re precise driving in cu rves .
Automatic post-collision braking system
The "automat ic pos t-coll is io n braking syste m"
c a n help t o reduce t he risk of sliding and of addi ­
tion al collisions a fter an acc iden t. If the a irbag
contro l modu le detects a collision above a certa in
vehicle speed, the ve hicle is braked by the ESC.
The
ve hicle does not br ak e automatically if;
- t he dr ive r presses the acce lerato r pedal, or
- the ESC, the b ra ke system or the ve hicle elect ri-
cal sys tem are not func tioning .
A WARNING
-The ES C and i ts in tegra ted systems can not
over co m e the li mits im posed by n atural
p hy sical laws. T h is is es peci ally i mpo rtan t
on s lippery or we t ro ad s. If the sy stem s be­
gi n acting to stabilize yo ur vehicle, you
should immediately a lter your speed to
match the road and t raffic conditions. Do
not let the increased safety provi ded tempt
you into tak ing risks. This could increase
your r is k of a coll is io n.
- Please note the r is k of a coll is io n increases
when dr iv in g fast , especially t hrough c urves
and on s lippery or wet roads, and when dr iv­
ing too close to obj ects ahead . T he ESC and
i t s in teg rated sys tems c annot alw ays pre­
ve nt col lisio ns
-th ere i s still a r is k of acci-
d en ts!
..,.

Intelligent Technology
-There is no vehicle stabilization when ESC/
ASR are switched off.
(D Tips
- ESC/ ASR cannot be switched off or sport
mode cannot be switched on if the cruise
control system * or the adaptive cruise con­
tro l* is switched on.
- Malfunctions in the Audi magnetic ride*
may make it impossible to switch the ESC/
ASR off or to switch sport mode on.
Brakes
New brake pads
New brake pads do not achieve their full braking
effect during the first 250 mi (400 km). They
must be "broken in" first. However, you can com­
pensate for the slightly reduced braking force by
pressing firmly on the brake pedal. Avoid heavy
braking dur ing the break-in per iod .
The break-in period can be considerably longer
for vehicles with ceramic brake rotors*. However,
you can compensate for the slightly reduced
braking force by pressing f irmly on the brake
pedal. Avoid heavy brak ing dur ing the break- in
pe riod .
Wear
Brake pad
wear depends largely on the way the
veh icle is driven and on operat ing cond itions .
This is especially true if you are driving frequently
in the city and on curves or with a sporty driving
style.
Operating noise
Noises may occur when braking depend ing on the
speed, braking force and outs ide cond itions such
as temperature and humidity.
Noises may become more apparent at lower
speeds due to the nature of the materials in the
ceramic brake rotors*.
Effect of water and road salt
In certain situations, for example after driving
through water, in heavy rain, after overnight con­
densat ion or after washing your car, the braking
150
effect can be reduced by moisture or ice on the
brake rotors and brake pads . The brakes must be
"dried" first with a few carefu l brake applica ­
tions.
At higher speeds and with the windshield wipe rs
turned on, the brake pads press against the brake
rotors for a short amount of time . This action,
which is not felt by the dr iver, happens at regular
i ntervals and ensures a better reaction t ime for
the brakes in wet weather .
The brak ing effect can also be reduced if you are
driv ing on salted roads and you do not app ly the
brakes for long periods of time. The layer of salt
on the brake rotors and pads must be worn off
first whe n the brakes are applied .
Due to its surface, the ceram ic brake rotor* ab­
sorbs moisture in certain s ituations . Therefore,
there will temporarily be less braking force than
when the brakes are dry . You can compensate for
th is by press ing the brake pedal harder.
Corrosion
Leaving the vehicle parked for long periods of
time, low mileage and avoiding heavy braking
can contribute to corros ion on the brake rotors
and to dirty brake pads.
If you usually avoid heavy braking or if there is
corrosion present, occasional heavy brak ing at
high speeds is recommended to clean the brake
rotors and
pads~.& .
Brake system malfunction
If you notice that the brake pedal travel has sud­
denly
i ncreased, then a brake circuit in the dua l­
c ir cuit brake system may have malfunctioned.
Drive to an authorized Audi dealer or authorized
Audi Service Fac il ity immed iately to have the
problem corrected. On the way there, drive with
r educed speed and keep in mind that you will
need a longer distance to stop and you will need
to press the brake pedal harder.
Low brake fluid level
When the brake fluid level is low, malfunctions in
t h e b rake system may occur. The b rake flu id level
is electronically monitored.
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Brake booster
The brake booster amplifies the pressu re yo u ap­
p ly to the brake pedal. It only operates while the
engine is running or when the ignition is switched
on (plug-in hybrid drive*) .
A WARNING
- Only apply the brakes for the purpose of
cleaning the brake system when road and
traff ic conditions permit. You must not en­
danger other road users. This increases the
r isk of an accident .
-
-Never let the vehicle roll while the engine is
stopped because this increases the risk of an
acc ident.
- Depend ing on the veh icle equipment, the
brake pedal may be pulled downward when
the vehicle automatically initiates b rak ing.
- Never place objects in the driver's footwell.
An object could end up in the area around
the pedals and prevent you from using
them. You wo uld not be able to use the ped­
als if sudden driving or braking mane uvers
were needed, which increases the risk of an
accident.
- Only use floor mats that do not obstruct the
area around the pedals and that can be se­
curely fastened in the footwe lls.
- T o reduce the risk of injury, do not place
your foot under the brake pedal.
(Llj) Note
-Never let the brakes "rub" by pressing the
pedal lightly when braking is not actually
necessary. This causes the brakes to over­
heat and increases braking distance and
causes wear.
- Before driving on a long stretch with steep
slopes, reduce your speed and shift to the
next lower gear This makes use of the en­
gine braking effect and relieves the brakes.
If you need to brake add it ionally, brake in
i ntervals and not cont inuously.
Intelligent Technology
(D Tips
- If the brake booster is not working, you
must press the brake pedal with much more
force than normal.
- If you retrofit your vehicle with a front spoi l­
er, wheel covers or simi lar items, make sure
that the air flow to the front wheels is not
interrupted. Otherwise the brake system
can become too hot.
Electromechanical
steering
The electromechanical steering supports the
driver's steering movements.
Power steering adapts electronically based on
the ve hicle speed.
Indicator lights and messages
• Do not drive vehicle: steering defective
If this indicator light turns on and stays on and
th is message appears, the power steering may
have failed .
Stop the vehicle in a safe location as soon as pos­
s ible. Do
not cont inue driving. See an authorized
Audi dealer or authorized Audi Service Fac ility for
ass istance .
l;r-ij Steering: system fault! You can continue
driving
If the indicator light turns on, the steering wheel
may be more difficult to move or more sensitive
than usual. The steering whee l may also be at an
angle when driving straight.
Drive slowly to an authorized Audi dea ler or au­
thorized Audi Service Facility to have the mal­
function corrected.
(D Tips
If the. or 'Tij indicator light on ly stays on
for a short time, you may continue driving .
151

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Glossary of tire and loading
terminology
Accessory weight
means the combined weight ( in
excess of those standard items
which may be replaced) of auto­ matic transmission , power steer ­
ing, power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items a re available as factory- in­
stalled equipment (whether i n­
stalled or not) .
Aspect ratio
means the ratio of the height to
the width of the tire in percent .
Numbers of 55 or lower indicate a
low s idewall for improved steer­
ing response and better overall
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim .
Bead separation
means a breakdown of the bond
between components in the bead .
Wheel s
Cord
means the strands forming the
plies in the tire .
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac ­
turer for a tire of a designated
size that has not been driven for
more than a couple of miles (kilo­
meters) at low speeds in the
three hour period before the tire pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capacity of
fuel, oil , and coolant, air condi­
tioning and additional weight of
optional eq uipm ent .
Extra load tire
means a tire designed to operate
at higher loads and at highe r in­
flation pressures than the corre­
sponding standard tire . Extra load
tires may be identified as "X L",
"xl", "EXTRA LOAD", or "RF" on
the sidewall.
.,.
333

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Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs.
(2.3 kg) in excess of those stand­
ard items which they replace, not
previously considered in curb
weight or accessory we ight, in­
c luding heavy duty brakes, ride
levelers, roof rack, heavy duty
battery, and special trim .
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the beads are laid at substantially
90 degrees to the centerline of
the tread.
Recommended inflation
pressure
see ¢ page 333, Cold tire infla­
tion pressure .
Reinforced tire
means a tire designed to operate
at higher loads and at h igher in ­
flat ion pressures than the corre­
sponding standard tire. Rein­
forced t ires may be identified as
"XL " "xl" "EXT RA LOA D" or "RF" , , ,
on the sidewall.
Wheels
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the
bead seat. If you change your
whee l size, you will have to pur ­
chase new tires to match the new
rim diameter .
Rim size designation
means rim diameter and width .
Rim width
means nominal distance between
rim flanges .
Sidewall
means that portion of a ti re be ­
tween the tread and bead.
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend­
ed periods of time . The rat ings
range from
93 mph (150 km/h)
to
186 mph (298 km/h) ¢ table
on page 331.
You may no t find
this info rmat ion on all tires be­
cause it is not required by law.
T he speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates t he
11>
335

Wheels
vehicle's Gross Veh ic le Weig ht
R ati ng
("GVWR").
The "GVWR" includes the weight
of the basic vehicle, all factory in­
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
plus maximum load. The maxi­
mum load includes the number of
passengers that the vehicle is in­
tended to carry ("seating capaci­
ty") with an assumed weight of 150 lbs . (68 kg) for each passen­
ger at a designated seating posi ­
tion and the total weight of any luggage in the vehicle. If you tow
a trailer, the weight of the trailer
hitch and the tongue weight of
the loaded trailer must be includ­
ed as part of the vehicle load .
The
Gro ss Ax le W eight Rating
("GAWR") is the maximum load
that can be applied at each of the
vehicle's two axles .
T he fact that there is an upper
limit to your vehicle's Gross Vehi­
cle Weight Rating means that the
total weight of whatever is being
carried in the vehicle (including
the weight of a trailer hitch and
the tongue weight of the loaded
trailer) is limited . The more pas­
sengers in the vehicle or passen -
344
gers who are heavier than the
standard weights assumed mean
that less weight can be carried as luggage .
The Gross Vehicle Weight Rating and the Gross Axle Weight Rat ing
are listed on the safety compli­
ance sticker labe l located on the
driver's side B-pillar.
1.8. WARNING
Overloading a vehicle can cause loss of vehicle control, a crash
or other accident, serious per­
sonal injury, and even death.
-Carrying more weight than your vehicle was designed to carry will prevent the vehicle
from handling properly and increase the risk of the loss of
vehicle control.
-The brakes on a vehicle that has been overloaded may not
be able to stop the vehicle
within a safe distance .
-Tires on a vehicle that has been overloaded can fail sud ­
denly, including a blowout and
sudden deflation, causing loss
of contro l and a crash.
-Always make sure that the to­ tal load being transported
-..