2013 AUDI A4 SEDAN brake

Homelink®
Universal remote
control
Description
Appl ies to vehicles: with Horne Link
The Homelink universal remote control can
be programmed with the remo te control for
devices that are already present.
With Home Link, you can control devices such
as the garage door, security systems, house
l ights , etc. comfortab ly from the inside of you
veh icle .
H ome Link ma kes it possible for you to rep lace
three differen t remote controls from dev ices
in your home with one universal remote. This
feature works for most garage door and exte­
rior door motor signals. Programming the in­
dividual remote control for your remote con ­
trol takes p lace near the center of the radiator
grille. There is a control module attached at
this location .
A one-t ime programming of the sensor must
be perfo rmed before you are able to use sys­
t ems w ith Homelink. If the system does not
activate after performing the one-t ime pro­
gramming, check whether the system uses a rolling codec:>
page 124 for veh icles without
the M MI*.
_& WARNING
- Never use the Homelink ® transmi tte r
with any garage door opener that does have not the sa fety stop and reverse fea ­
tu re as req uired by federa l safety stand­
ards. Th is includes any garage door open­
er mode l manufact ured before April 1,
1982.
- A garage door opener which cannot de­
tect an object, signaling the door to stop
and reverse does not meet current feder­
al safety standards . Us ing a ga rage door
opener without these features increases
risk of serious in ju ry or death.
Homelink ® 121
-For safety reasons never re lease the
parking brake or start the engine while
anyone is standing in front of the vehicle.
- A garage door or an estate gate may
sometimes be set in mot ion when the
Homelink ® remote control is being pro­
grammed . If the device is repeatedly ac ­
tivated, th is can overstrain motor and
damage its e lectrical components -an
overhea ted mo to r i s a fire hazard !
- To avo id possib le injuries or p roperty
damage, please always make abso lutely
certain that no persons o r ob je cts are lo­
ca ted in the range of mo tion of any
equi pment being ope rated .
(D Tips
- If you would li ke more information on
H ome link ®, where to purchase the
Home link ® compa tib le produc ts, or
would like to purchase the Homelink ®
Home Lighting Package, please call to ll­
free: 1-800-355-3515.
- For Declaration of Compliance to United
States FCC and Ind ustry Canada reg ula­
tions c:>
page 275.

-never sit on the edge of the seat
- never sit sideways
- never lean out the w indow
- never put your feet out the window
- never put your feet on the instrument panel
- never rest your feet on the seat cushion or
back of the seat
- never ride in the footwe ll
- never ride in the cargo area
8_ WARNING
-
Improper seat ing positions increase the
r isk of serious personal injury and death
whenever a veh icle is being used .
- Always make sure that all vehicle occu­
pants stay in a proper seating pos ition
and are properly restra ined whenever the
vehicle is be ing used.
Pedal area
Pedals
The pedals must always be free to move and
must never be interfered with by a floor mat
or any other object.
M ake sure that all pedals move freely without
i nte rferen ce and that no thing prevents them
from re tu rning to the ir origin al posi tions.
Only use floor mats that leave the pedal area
free and can be secured w ith floor mat fasten­
e rs.
If a brake circuit fails, increased brake peda l
travel is required to br ing the vehicle to a full
stop.
8_ WARNING
Pedals that canno t move freely ca n cause
loss o f vehicle control a nd incr ease the r is k
o f serious injury.
- Never pl ace any ob jects in the d river's
f ootwell. An object could ge t into the
peda l area and inter fere with pedal func­
tion . In case of s udden braking or an ac­
c ident, you would not be able to brake or
accele rate!
Dr iving S afel y 131
-Always ma ke sure that nothing can fall
or move into the driver's footwel l.
Floor mats on the driver side
Always use floor mats that can be securely
attached to the floor mat fasteners and do
not interfere with the free movement of the
pedals.
.,. Ma ke s ure that the floor mats are properly
secured and cannot move and interfere with
the peda ls
c> &_ .
Use only f loor mats that leave the peda l area
u nobstructed and that are firmly secured so
that they cannot slip o ut of position. You can
obta in suitable floor mats from your author­
ized Audi dealer.
Floor mat faste ners are insta lled in your Audi.
Floor mats used in yo ur vehicle mus t be at­
tached to these fastene rs . P rope rly securing
the floor mats wi ll prevent them from sliding
into positions that could interfere with the
pedals or impair safe operat ion of your vehicle
in other ways.
8_ WARNING
Pedals that cannot move free ly can result
in a loss of vehicle control and increase the
risk of serious perso na l injury.
- Always make sure that floor mats are
properly secured .
- Never p lace or install floor mats or other
f loor coverings in the vehicle that cannot
be prope rly secured in p lace to prevent
them from slipping and interfer ing with
the peda ls o r the a bility to cont ro l t he
veh icle.
- Never place or ins tall floor mats o r other
f loor coverings on top o f al ready in stal­
led floo r mats . Ad ditiona l floo r mats and
o ther cover ings will red uce the size of
the peda l area and interfere with the
pedals.
- Always prope rly reinstall and secure floo r
mats that have been taken out for clean­
ing.
•
•

132 Driving Safel y
-Always make sure that objects cannot
fall into the driver footwe ll wh ile the ve­
hicle is moving. Objects can become
trapped under the brake pedal and accel­
erator peda l causing a loss of veh icle
contro l.
Stowing luggage
Loading the luggage compartment
All luggage and other objects must be prop­
erly stowed and secur ed in the luggage com­
partment.
Fig. 128 S afe load positio nin g: place heavy objects as
l ow a nd a s far forward as pos sible.
Loose items in the luggage compartment can
shift suddenly, changing vehicle hand ling
characteristics. Loose items can also increase
the risk of serious personal injury in a sudden
vehicle maneuver or in a collision .
.,. Distribute the load evenly in the luggage
compartment .
.,. Always p lace and properly secure heavy
items in the luggage compartment as low
and as far forward as possible
c> fig. 128.
.,. Secure the load with the cargo net* or with
non -elastic straps secured to the tie-downs
<=> page 65.
.,. Make sure that the rear seatback is securely
latched in place.
.&_ WARNING
Improperly stored luggage or other items
can fly throug h the vehicle ca using serious
personal inj ury in the event of hard brak­
ing or an accident. To help reduce the r isk
of serious personal injury: -
Always put objects, for example, luggage
or other heavy items in the luggage com ­
partment.
- Always secure objects in the luggage
compartment using the t ie-down eyelets
and suitable straps.
.&_ WARNING
-
Heavy loads w ill influence the way your ve­
hicle handles . To help reduce the risk of a
loss of control leading to serious personal
in jury:
- Always keep in mind when transporting
heavy objects, that a change in the cen­
ter of gravity can also cause changes in
veh icle handling :
- Always distribute the load as evenly as
possible.
- Place heavy objects as far forward in
the luggage compartment as possible .
- Never exceed the Gross Axle Weight Rat­
ing or the Gross Vehicle Weight Rating
specified on the safety compliance stick­
er on the left door jamb. Exceeding per­
miss ible weight standards can cause the
veh icle to slide and handle differently.
- Please observe information on safe dr iv­
ing
c:> page 126.
.&_ WARNING
To help prevent poisonous exhaust gas
from being drawn into the vehicle, always
keep the rear lid closed while driving.
- Never transport objects larger than
those fitting completely into the luggage
a rea because the rear lid cannot be fully
closed.
- If you absolutely m ust dr ive with the rear
lid open, observe the following notes to
red uce the risk of poisoning:
- Close all windows,
- Close the sunroof,
- Open all air outlets in the instrument
panel,
- Switc h off the ai r rec irc ulat ion,
- Set the fresh air fan to the highest
speed.

184 Intelligent technology
Intelligent technology
Notice about data
recorded by vehicle
control modules
Your veh icle is not equipped with an Event Da­
ta Recorde r (EDR), ins talled by some manu­
facture rs fo r the express p urpose of capturing
data for retrieval after an accident or cras h
event . EDR's are sometimes ca lled "crash re­
corders".
Some state laws restr ict the retr ieval or down­
loading of data stored by EDR's that were in­
stalled in a vehicle for the express purpose of retrieving data after an accident or crash
event without the owner's consent.
A ltho ugh yo ur vehicle is not equ ipped wit h an
EDR, it is equipped with a number of electron­
ic control modules for various vehicle systems
such as, for examp le, eng ine f unction, em is­
sion control, as well as for the airbags and
safety belts.
These electronic contro l modules also record
vehicle-re lated data during norma l vehicle op­
erat ion for diagnostic and repa ir purposes.
The recording capacity of the electronic con­
trol modules is limited to data (no sound is re­
corded) and only a small amount of data is ac­
tually recorded ove r a ve ry limited pe riod of
time and stored when a sys tem faul t or o ther
cond ition is sensed by a cont ro l u nit. Some of
the data then stored may re late to vehicle
speed, direction, braking as we ll as restraint
system use and performance in the event of a
crash or other condit ion. Stored data can only
be read and downloaded w ith special equip­
ment.
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidd ing and loss of ve hicle control. It works
only when the eng ine is running. ESC detects certain difficult driving situat
ions, including
when the vehicle is beginning to spin (yaw)
o ut of control and he lps you to get the veh icle
back under control by se lectively braking the
whee ls, and/or reducing eng ine power and
providing steer ing ass istance to he lp hold the
vehicle o n the dr iver's intended course. The in­
dicator light
G) in the inst rument cluster
blinks when ESC is ta king action to help yo u
control the veh icle.
ESC has limitations.
It is importa nt to remem­
ber that ESC cannot overcome the laws of
physics. It wi ll not always be able to help out
under a ll cond it ions you may come up aga inst.
F or example, ESC may not always be able to
help you master situations where there is a
s u dden change in the coefficient of friction of
the road surface. When there is a section of
dry road that is sudden ly covered w ith water,
s lush or snow, ESC cannot perform the same
way it wou ld on the dry surface . If the ve hicle
hydroplanes (rides on a cushion of water in­
stead of the road surface), ESC will not be
able to help you steer the vehicle because con­
tact with the pavement has been in terrupted
and the vehicle cannot be braked or steered .
D uring fast cornering, particularly on winding
roads, ESC cannot always deal as effectively
with difficult driving situations than at lower
speeds. When towing a trailer, ESC is not able
to help you regain control as it would if you
were not tow ing a trailer.
Always adjust your speed and driving style to road, traffic; and weather condit ions. ESC can­
not override the vehicle's physical limits, in­
crease the availab le tract ion, or keep a ve hicle
on the road if road departure is a result of
drive r inattent io n. Instead, ESC imp roves the
poss ibil ity of keeping the vehi cle under con ­
trol and on the road during ex treme maneu­
vers by using the d river's steering inputs to
help keep the vehicle going in the intended di­
rection . If you are traveling at a speed that
ca uses you to run off the road before ESC can
provide any assistance, you may not experi­
ence the benefits of ESC.

ESC includes and/or works together with the
anti-lock brake system (ABS), brake assist sys ­
tem, anti -slip regulation (ASR) , e lectronic dif­
ferential lock (EDL), dynamic steering* and electronic i nteraxle differential lock* /selective
wheel torque control* . ESC is switched on all
the t ime. I n certain s ituations when you need
less traction, you can switch
off ASR by press­
i ng the button~~
page 186, fig. 159 or
~ page 186, fig. 160. Be sure to sw itch ASR
on again when you no longer need less trac­
tion.
Anti-lock b ra king s ystem (ABS)
ABS prevents the wheels from locking up
when braking. The vehicle can still be steered
even d uring hard brak ing . Apply ste ady p res­
sure to the brake pedal. Do not pump the ped­
a l. A pulsing in the brake peda l indicates t hat
the system is he lping you to brake the vehicle .
Brake assist system
The brake assist system can decrease bra king
d istance. It increases braking power when the
d river presses the brake pedal quick ly in eme r­
gency situations . You must press and hold the
brake peda l until the situation is over. In
veh icles w ith adaptive cru ise contro l*, the
brake assist system is more sensit ive if the
d istance detected to the veh icle ahead is too
small.
Anti- slip regulati on (ASR)
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to
the road condit ions. This makes it eas ier to
start, accelerate and drive up hills.
Elect ronic diffe renti al lo ck (EDL )
The ED L brakes wheels that are spinning and
transfers the drive power to the other drive
wheel or wheels if the vehicle is equipped with
all-wheel drive*. This function is available up
to about 60 mph (100 km/h) .
In extreme cases, EDL automatica lly switches
off to help keep the brake on the braked whee l
from overheating. EDL w ill switch on again au-
Intellig ent technolog y 185
tomat ica lly when conditions have returned to
norma l.
Dynamic steering*
On vehicles with dynam ic steering*, ESC helps
stab il ize the s teer ing in crit ica l sit uat io ns.
Electronic interaxle differential lock* /
selective wheel torque control*
T he electronic i nteraxle differential lock (front
whee l dr ive) or the se lective whee l to rque
control (all-whee l dr ive) opera tes when dr iv­
ing thro ugh curves. The front wheel on the in­
side of the c urve or both whee ls on the inside
of the curve are braked selectively as needed .
This min imizes sliding in the front wheels and
allows for more precise driving through
cu rves . The applicable system may not acti­
vate when dr iv ing in wet or snowy conditions.
A WARNING
- ESC, ABS , ASR, EDL dynam ic steering*
a nd the elect ronic interaxle differential
loc k* /se lective wheel torque control*
function cannot overcome the laws of
physics. This is especially important on
slippery or wet roads . If the systems be­
gin acting to stabilize your vehicle, you
should immediately change yo ur speed
to match the road and traff ic conditions.
Do not let the increased safety provided
by these systems tempt you to take risks .
Doing so will increase the risk of a loss of
veh icle contro l, col lision and ser ious per­
sonal injuries.
- Always adapt your speed to road, traffi c
and wea ther conditions. The risk of los­
ing con tro l of the vehicle increases when
driving too fast, espec ially through
curves and on slippery or wet roads, and
when dr iv ing too close to vehicles up
ahead. ESC, ABS, the brake ass ist sys­
tem, ASR, EDL dynam ic steering* and the
electronic interaxle differentia l lock*/se­
lective whee l torque control* function
cannot prevent collisions.
•
•

Braking
What affects braking efficiency?
New brake pads
During the first 250 miles (400 km), new
brake pads do not possess their full braking
effect, they have to be "broken in" first¢& .
You can compensate for this slightly reduced braking power by pushing harder on the brake
pedal. Avoid heavy braking loads during the
break-in per iod.
Operating conditions and driv ing habits
The brakes on today's automobi les are sti ll
subject to wear, depending largely on operat ­
ing conditions and driving habits¢.&. . On
vehicles that are e ither 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
Warranty & Maintenance booklet . Failure
to have your b rake pads inspected can result
in red uced brake performance.
On steep slopes, you shou ld use the brak ing
effect of the engine. This way, you p revent un­
necessary wear on the brake system.
If you
must use yo ur brakes, do not hold the brakes
down continuously. Pump the brakes at inter­
va ls.
Operating noise
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity.
Effect of water and road salt
In certain situat ions, for example after driving
through water, in heavy ra in, after overnight
condensation or after washing your car, the
braking effect can be reduced by moisture or
ice on the brake roto rs and brake pads . The
brakes must be dried first with a few careful
brake applications .
A t hi gher speeds and with the windshield w ip­
ers turned on, the brake pads press against
the brake rotors for a short amount of time .
This occurs at regular intervals without the
Intelligent technology 187
driver noticing and provides for better brake
response time under wet conditions .
T he effectiveness of the brakes can be red uced
when the vehicle is driven on a sa lt-co vered
road and the b rakes are not used. Likewise,
you clean off accumulated salt coating from
brake discs and pads with a few cautious ap­
plications of the brake ¢ & .
Corrosion
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 driven regu larly or
on ly for short trips with litt le 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 braking
firmly a few times from a moderately high
speed ¢.&. .
Faults in the brake system
If you should notice a sudden increase in
brake pedal trave l, then one of the two brake
c ircuits may have failed ¢.&. .
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low. The brake fluid
level is monitored electronica lly.
Brake booster
T he brake booster increases the pressure that
you generate with the brake peda l. It works
only when the engine is runn ing .¢ .&.
Brake lining wear status
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
through the openings in the wheel. If neces­
sary, the wheel may be removed fo r this in­
spection ¢
page 252, Changing a wheel .
A WARNING
-
- New brake pads don't have the best stop­
ping power and must be "broken-in" dur-
ing the initial 100 to 150 miles (150 to
~
•
•

188 Intelligent technology
200 kilometers) of normal city driving.
You can compensate for this by pressing
the brake pedal more firmly. This 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 users must not be put at risk -
you may cause an acc ident!
- Before descending a steep grade, reduce
speed and shift transmission into a lower
gear or lowe r driving range. Do not ride
the brakes or hold the pedal down too
long or too often. This could cause the
brakes to get hot and diminish braking
efficiency.
- Do not "ride the brakes" by resting your
foot on the pedal when you do not intend
to brake . This may cause the brakes to
overheat, premature wear and increased
stopping distance.
- Under certain climatic and operating
conditions such as passing through wa­
ter, driving in heavy rain or after washing
the vehicle, the effectiveness of the
brakes can be reduced. In winter, ice can
accumulate on the brake pads, linings,
discs and drums. Carefully apply brakes
for a test. Brakes will dry and ice coat­
ings will be cleaned off after a few care­
ful brake applications.
- Driving for an extended period of time on
salt-covered roads without using your
brakes can also affect braking efficiency.
Clean off accumulated salt coating from
brake discs and pads with a few careful
brake applications.
- 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 . Otherwise the brake system could
overheat reducing the effectiveness of
the entire brake system.
- Failure of one brake c ircuit will impair
the braking capability resulting in an in­
creased stopping distance. Avoid driv ing
the vehicle and have it towed to the near- est authorized Audi dealer or
qualified
workshop.
- Never let the vehicle roll to a stop with
the engine shut off.
- If the brake booster is not working, for
example when towing your vehicle, or
because the brake booster has somehow
been damaged, the brake pedal must be
pressed considerably 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 steering adapts electronically based on
the vehicle speed .
Indicator lights and messages
• Steering defective! Do not drive vehicle!
If this indicator light turns on and stays on
and 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.
E!"4 Dynamic steering: System fault! You can
continue driving
If the indicator light turns on and the mes­
sage appears, the steering may be more diffi­
cult to move or more sensitive than usual. The
steering wheel may also be at an angle when
driving straight .
Drive slowly to your authorized Audi dealer or
qualified workshop to have the malfunction
corrected .
ls!'fl Dynamic steering: initializing
If this driver message appears and the indica­
tor light is flashing on the instrument panel,
dynamic steering* is being reinitialized. Once
you start the engine after this is finished, the ..,..

192 Driving and environment
Driving and
environment
The first 1,000 miles
(1,500 km) and
afterwards
New engine
The engine needs to be run-in during the first
1,000 miles (1,500 km).
For the fir st 600 miles (1,000
kilometers ):
.,. Do not use full throttle.
... Do not drive at engine speeds that are more
than 2/3 of the max imum permitted RPM.
From 600 to 1,000 miles (1 ,000 to
1,500 kilometers):
.,. Speeds can gradually be increased to the
max imum pe rm iss ible road or eng ine speed .
During and after break-in per iod
... Do not rev the eng ine up to h igh speeds
when it is cold. Th is app lies whether the
transmission is in N (Neutral) or in gear.
After the break- in period
... Do not exceed max imum eng ine speed un­
der any circumstances .
... Upshift into the next higher gear
before
reaching the red area at the end of the tach­
ometer scale¢
page 10.
During the first few hours of driving, the en­
g ine's inter na l friction is higher tha n later
when alt the moving parts have been broken
i n. How welt this break- in process is done de­
pends to a conside rable extent on the way the
ve hicl e is driven du ring the first 1,000 miles
(1, 500 kilome ters).
(D Note
E xtremely high engi ne speeds are auto­
mat ica lly re duced. However, these rpm
lim its are programmed for a n engine welt
r u n- in, not a new eng ine.
{® For the sake of the environment
Do not drive with unnecessarily high en­
g ine speeds - upshifting ear ly saves fuel,
reduces no ise and protects the environ­
ment.
, New tires
If your vehicle is runni ng on new tires, drive
very carefully for the first 350 miles (500 kilo­ meters) after fitting.
_& WARNING
N ew tires tend to be slip pery a nd mus t al­
so be "broken -in" . Be s ure to remembe r
this dur ing the fi rst 350 mi les (500 kilo ­
meters) . Brake gently . Avoid fo llow ing
closely behind other vehicles or other sit­
uations that m ight require sudden, hard
braking.
Avoid damaging the
vehicle
When you a re d rivi ng on poo r roads, or over
cu rbs, ste ep ramps, etc., ma ke certai n that
low- ly ing parts s uch as spoile rs and ex ha ust
s ystem parts do not bot tom o ut and get dam ­
aged.
T his is espec ially true for veh icles with low­
s lu ng chassis (s por ts chassis)* and fully load­
ed vehicles.
Driving through water
on roads
Note th e following to avoid vehicle damage
whe n driving through water, for examp le on
flooded roads:
- The wa ter must not be any hig he r th an the
bottom of the vehicle body .
- Do not dr ive faste r than walk ing speed.