wheel AUDI A6 2016 Service Manual

A WARNING
Objects between you and the airbag will in­
crease the risk of injury in a crash by interfer­
ing with the way the airbag unfolds and/or by
being pushed into you as the airbag inflates.
-Always make sure nothing is in the front air -
bag deployment zone that could be struck
by the airbag when it inflates .
- Objects in the zone of a deploying airbag
can become projectiles when the airbag de­
ploys and cause serious personal injury.
- Never hold things in your hands or on your
lap when the vehicle is in use .
-
-Never place accessories or other objects
(such as cup holders, telephone brackets,
note pads, navigation systems, or things
that are large, heavy, or bulky) on the doors;
never attach then to the doors or the wind­
shield; never place them over or near or at­
tach them to the area marked ,,AIRBAG" on
the steering wheel, instrument panel or the
seat backrests; never place them between these areas and you or any other person in
the vehicle .
- Never attach objects to the windshield
above the passenger front airbag, such as
accessory GPS navigation units or music players. Such objects could cause serious in­
jury in a collision, especially when the air­ bags inflate .
- Never recline the front passenger seat to
transport objects. Items can also move into
the deployment area of the side airbags or
the front airbag during breaking or in a sud­ den maneuver. Objects near the airbags can
fly dangerously through the passenger com­
partment and cause injury , particularly
when the seat is reclined and the airbags in­
flate.
A WARNING
A person on the front passenger seat, espe­ cially infants and small children, will receive
serious injuries and can even be killed by be­
ing too close to the airbag when it inflates.
- Although the Advanced Airbag System in
your vehicle is designed to turn off the front
Airbag system
passenger airbag if an infant or a small child
is on the front passenger seat, nobody can
absolutely guarantee that deployment un­
der these special conditions is impossible in
all conceivable situations that may happen
during the useful life of your vehicle .
- The Advanced Airbag System can deploy in accordance with the .,low risk" option for 3-
and 6-year-old children under the U.S. Fed­
eral Standard if a child with electrical capac­
itance greater than the combined capaci­
tance of a typical one-year old infant re­
strained in one of the forward facing or rear­
ward-facing child seats with which your ve­
hicle was certified is on the front passenger
seat and the other conditions for airbag de­
ployment are met .
- Accident statistics have shown that children
are generally safer in the rear seat area than
in the front seating position.
- For their own safety, all children, especially
12 years and younger, should always ride in
the back properly restrained for their age
and size.
Advanced front airbag system
Your vehicle is equipped with a front Advanced
Airbag System in compliance with United States
Federal Motor Vehicle Safety Standard 208 , as
well as Canada Motor Vehicle Safety Standard (CMVSS) 208 as applicable at the time your vehi­
cle was manufactured.
The front Advanced Airbag System supplements
the safety belts to provide additional protection
for the driver's and front passenger 's heads and
upper bodies in frontal crashes. The airbags in­
flate only in frontal impacts when the vehicle de­
celeration is high enough.
The front Advanced Airbag System for the front seat occupants is not a substitute for your safety
belts. Rather, it is part of the overall occupant re­
straint system in your vehicle. Always remember
that the airbag system can only help to protect
you, if you are sitting upright, wearing your safe­
ty belt and wearing it properly . This is why you
and your passengers must always be properly ..,.
147

Airbag syste m
restrained, not just because the law requires you
to be.
The Advanced Airbag System in your veh icle has
been cert ified to meet the "low r isk" require­
ments for 3 and 6 year-o ld children on the pas­
senger side and very sma ll adults on the driver
side . The low risk dep loyment cr iteria are intend­
ed to he lp reduce the risk of injury through inter­
action with the front airbag that can occur, for
example, by being too close to the steering wheel
a nd instrument panel when the airbag inflates .
In addition, the system has been certified to
comply w ith the "suppression" requirements of
the Safety Standard, to turn off the front a irbag
for i nfants 12 months old and younger who a re
restrained on the front passenger seat in ch ild re­
stra ints that are listed in the Standa rd
¢ page 168, Child restraints and Advanced front
airbag system.
" Suppression" requ ires the front a irbag on the
passenger side to be tu rned off if:
- a child up to about one year of age is restra ined
o n the fro nt passenger seat in one of the rear­
facing or forward-facing infant restraints listed
in Federal Motor Vehicle Safety Standard 208
with wh ich the Advanced Airbag System in your
vehicle was certified. For a listing of the ch ild
restraints that were used to certify your vehi ­
cle's compliance with the US Safety Standard
¢ page 168,
-When a person is detected on the front passen­
ger seat that has an electrica l capacitance t hat
is more than the tota l electrical capacitance of
a chi ld that is about 1 year old restrained in one
of the rear-facing or forward-fac ing infant re­
straints (listed in Federal Motor Vehicle Safety
Standard 208 w ith w hich the Advanced A irbag
System in your veh icle was certified), the front
airbag on the passenge r side may or may not
deploy.
The
P ASS ENGER AIR BAG OFF light comes on
when the e lectron ic cont rol un it detects a total
e lectr ica l capacitance on the front passenger seat
that requires the front a irbag to be turned off. If
the
PAS SENGER AIR BAG OFF light does not
come on, the front airbag on the passenger side
148
has not been turned off by the contro l uni t and
can deploy if the contro l unit senses an impact
that meets the cond itions stored in its memory.
If the total e lectr ica l capacitance registered o n
the front passenger seat is more than that of a
typica l 1 year-old, but less than the weight of a
small adu lt, t he front a irbag on the passenger
s ide may deploy (the
PA SS ENGER AIR BAG OFF
light does not come on).
For e xample , the ai rbag ma y deplo y if:
- a small ch ild that is heav ier than a typica l 1
year-old child is on the front passenger seat
(regard less o f whether the child is in one o f the
child seats listed ¢
page 168),
-a child who has outgrown child restraints is on
the front passenger seat.
If the front passenger a irbag is t urned off, the
PA SSENGER AIR BAG O FF light in the center of
the instr ument pane l will come on and stay on .
If the front passenger a irbag deploys, the Feder­
al Standard requ ires the airbag to meet the "low
r isk" dep loyment criteria to he lp reduce the r isk
of inju ry through interaction with the airbag .
"Low risk" deployment occurs in those crashes
that take p lace at lower decelerations as defined
in the electronic contro l unit ¢
page 153.
Alwa ys remembe r: Even though your vehicle is
equipped with Advanced Airbags, the safest place
for children is properly restrained on the back
seat. Please be sure to read the important infor­
mation in the sections that fo llow and be sure to
heed all of the WARNINGS.
A WARNING
To reduce the risk of injury when an airbag in­
flates, always wea r safety belts prope rly.
- If you are unrestrained, leaning forward, sit­
ting sideways or out of position in any way,
your r isk of injury is much highe r.
- You will also receive ser ious injuries and
could even be killed if you are up against the
airbag or too close to it when i t inflates -
even with an Advanced Airbag
¢page 142.

Airbag system
-An Advanced Airbag with gas generator and
control valve for the driver inside the steering
wheel hub.
- An Advanced Airbag with gas generator and
control valve inside the instrument panel for
the front passenger.
- A capacitive passenger detection system under­
neath the front passenger seat cover. This sys­
tem measures the electrical capacitance of the
person in the seat. The information registered
is sent continuously to the electronic control
unit to regulate deployment of the front Ad­
vanced Airbag on the passenger side.
- An airbag monitoring system and indicator
light in the instrument cluster~
page 153.
-A sensor in each front seat registers the dis­
tance between the respective seat and the
steering wheel or instrument panel. The infor­
mation registered is sent continuously to the
electronic control unit to regulate deployment
of the front Advanced Airbags.
- The
PASSENGER AIR BAG OFF light comes on
and stays on in the center of the instrument
panel
~ pag e 154, fig. 159 and tells you when
the front Advanced Airbag on the passenger side has been turned
off.
- A sensor in the safety belt latch for the driver
and for the front seat passenger that senses
whether that safety b elt is latched or not and
transmits this information to the electronic control unit.
A WARNING
Damage to the front passenger seat can pre­
vent the front airbag from working properly .
- Improper repair or disassembly of the front
passenger and driver seat will prevent the
Advanced Airbag System from functioning properly.
- Repairs to the front passenger seat must be
performed by qualified and properly trained
workshop personnel.
- Never remove the front passenger or driver
seat from the vehicle.
- Never remove the upholstery from the front
passenger seat.
- Never disassemble or remove parts from the
seat or disconnect wires from it.
150
- Never carry sharp objects in your pockets or
put them on the seat. The capacitive pas­
senger detection mat in the front passenger
seat will not function properly if it is punc­
tured .
- Never carry things on your lap or carry ob­
jects on the front passenger seat . Such ob­
jects can influence the capacitance regis­
tered by the capacitive passenger detection
system, so that incorrect information is pro­
vided to the airbag control unit.
- Never store items under the front passenger
seat . Parts of the Advanced Airbag System
under the passenger seat could be dam­
aged, preventing them and the airbag sys­
tem from working properly.
- Never place seat covers or replacement up­
holstery that have not been specifically ap­
proved by Audi on the front seats.
- Seat covers can prevent the Advanced Air­
bag System from recognizing child re­
straints or occupants on the front passenger
seat and prevent the side airbag in the seat
backrest from deploying properly.
- If a seat heater has been retrofitted or oth­
erwise added to the front passenger seat,
never install any child restraint system on
this seat.
- Never use cushions, pillows, blankets, or
similar items on the front passenger seat.
The additional layers prevent the capacitive
passenger detection system from accurately
measuring the capacitance of the child safe­
ty seat and/or the person on the seat and
thus keep the Advanced Airbag System from
working properly.
- Never place or use any electrical device
(such as a laptop, CD player, electronic
games device , power inverter or seat heater
for child seats) on the front passenger seat
if the device is connected to the 12-volt
socket or the cigarette lighter socket. Such
devices can influence the capacitance regis­
tered by the capacitive passenger detection
system, so that incorrect information is pro­
vided to the airbag control unit.
- If you must use a child restraint on the front
passenger seat and the child restraint
~

A WARNING 1=-
Objects between you and the airbag will in­
crease the risk of injury in a crash by interfer­
ing w ith the way the airbag unfolds or by be­
ing pushed into you as the a irbag inflates .
- Never hold th ings in your hands or on your
lap when the vehicle is in use .
- Never transport items on or in the area of
the front passenger seat . Objects could
move into the area of the front airbags dur­
ing brak ing or other sudden maneuvers and
become dangerous projectiles that can
cause serious personal injury if the airbags
inflate.
- Never place or attach accessories or other
objects (such as cup holders, te lephone
brackets, large, heavy or bulky objects) on
the doors, over or near the area marked "AIRBAG" on the steering wheel, instru­
ment pane l, seat backrests or between
those areas and yourself . These objects
could cause injury in a crash, especially
when the airbags inflate .
- Never recline the front passenger 's seat to
transport objects . Items can also move into
the area of the side airbag or the front a ir­
bag dur ing bra king or in a sudden maneu­
ver. Objects near the airbags can become
projectiles and cause injury, particular ly
when the seat is reclined.
-
- Never place or transport objects on the
front passenger seat . Objects on the front
passenger seat could cause the capacitive
sensor in the seat to signal to airbag system
that the seat is occup ied by a person when it
in fact is not, or that the person on the seat
is heavier than he or she actually is . The
change in electric capac itance because of
such objects can cause the passenger front
airbag to be turned on when it shou ld be
off, or can cause the airbag to work in a way
that is different from the way it would have
worked without objects on the seat.
- Always ma ke sure that there is nothing on
the front passenger seat that wi ll cause the
capacit ive passenger detection system in
the seat to signa l to the Airbag System that
Airb ag sys tem
the seat is occupied by a person when it is
not, or to signal that it is occupied by some­
one who is heavier than the person actually
sitt ing on the seat . The presence of an ob­
ject could cause the passenger front airbag to be turned on when it should be off , or
could cause the airbag to work in a way that
is different from the way it would have
worked without the object on the seat.
A WARNING
=
The fine dust created when airbags deploy can
cause breathing prob lems for people with a
history of asthma or other breathing condi­
tions .
- To reduce the risk of breathing problems,
those with asthma or other respiratory con­
ditions should get fresh air right away by
getting out of the vehicle or open ing win­
dows or doors.
- If you are in a collision in wh ich airbags de­
ploy, wash your hands and face w ith m ild
soap and water before eating .
- Be carefu l not to get the dust into your eyes,
or into any cuts or scratches.
- If the residue should get into your eyes,
flush them w ith water .
Monitoring the
Advanced Airbag System
t!~ (USA models) /!t (Canada models)
Airbag monitoring indicator light
T wo separate indicators monitor the function of
the Advanced Airbag System : the airbag moni­
toring indicator light and the
PASSENGER AIR
BAG OFF
light.
The Advanced Airbag System as well as the side
airbags and side curtain airbags with ejection
mitigation fea tures (including the electronic con­
trol unit, sensors and system wiring) are all monitored continuously to make sure that they
are functioning properly whenever the ignition is
on. Every time you turn on the ign ition, the a ir­
bag system indicato r light
II (USA models) tfll
(Canada models) wi ll come on for a few seconds
(function check).
153
...

(D Tips
If the capacitive passenger detection system
determines that the front passenger seat is
empty, the frontal airbag on the passenger
side will be turned off, and the
PA SSENGER
A IR BAG OFF
light will stay on.
Repair , care and disposal of the airbags
Parts of the a irbag system are installed at many
d ifferent p laces on your Aud i. Installing, remov­
ing, servic ing o r repa iring a part in an area of the
vehicle can damage a part of an airbag system
and p revent that system from working properly
in a co llision.
There are some important things you have to
know to make su re t hat the effectiveness of the
system w ill not be impaired and that discarded
components do not cause injury or pollute the
environment .
A WARNING
Improper care, serv icing and repa ir proce­
dures can increase the r isk of personal injury
and death by preventing an airbag from de­
ploying when needed or deploying an airbag
unexpectedly:
-
- Never cover, obstruct, or change the steer­ ing wheel horn pad or a irbag cover or the in­
strument panel or mod ify them in any way.
- Never attach any objects such as cup holders or te lephone mountings to the su rfaces cov­
er ing the airbag units.
- For cleaning the ho rn pad or instrument
pane l, use on ly a soft, dry cloth or one mois­
tened with plain water. Solvents or cleaners cou ld damage the a irbag cover or change
the stiffness or strength of the mater ial so
that the airbag cannot dep loy and protect
properly.
- Never repair, adjust, or change any parts of
the airbag system.
- All work on the steering wheel, instr ument
pane l, front seats or electrical system (in ­
cluding the installation of audio equipment,
cellu lar telephones and CB rad ios, etc.)
must be performed by a qualified technician
Airb ag sys tem
who has the t raining and spec ial equ ipment
necessary.
- For any wo rk on the airbag system, we
strong ly recommend that you see yo ur au­
thorized Audi dealer or qualified workshop.
- Never modify the front b umper or parts of
the vehicle body.
- Always make sure that the side a irbag can
inflate w ithout interference:
- Never ins tall seat covers or replacement
u pholste ry ove r the front seatbacks that
have not been specifica lly approved by
Audi.
- Never use addi tional seat cushions that
cove r the areas where the side airbags in­
flate.
- Damage to the orig inal se at cove rs or to
the se am in the area of the s ide airbag
module must a lways be repaired immedi­
ate ly by an authorize d Aud i dealer.
- The airb ag system can deploy on ly on ce. Af­
ter an airbag has been deployed, it must be
replaced with new replacement parts de­
signed and approve d espec ially for your
Aud i model version. Replacement of com­
p lete airbag systems or airbag components
m ust be performed by qualified workshops
only . Make sure that any airbag service ac­
tion is entered in you r A udi Warranty
&
Maintenance boo klet under AIRBAG R E­
PLAC EM ENT R ECORD.
- For safety reasons in severe accidents, the
alternator and starte r are separated from
the vehicle ba tte ry with a pyro te chnic cir cui t
interrupter.
- Work on the pyrotechnic c ircuit interrupt­
er must on ly be performed by a qualif ied
technic ians who have the exper ience, in­
format ion and specia l tools necessa ry to
perfo rm the wor k safely.
- If the vehicle or the circuit interr upte r is
scrapped, all applicable safety p recautions
must be followed.
157

Airbag syste m
Important safety instructions on the knee
airbag system
A pplies to veh icles: w ith knee a irbags
Airbags are only supplemental restraints. Always
wear safety belts correctly and ride in a proper
seating position.
There is a lot that you and your passengers must
know and do to help the safety be lts and airbags
to provide supplemental protection .
A WARNING
An inflating knee airbag can cause serious in­
jury . Wearing safety belts incorrect ly and im­
proper seating pos it ions increase the r isk of
serious personal injury and death whenever a
vehicle is being used.
- The knee airbag system cannot protect you
properly if you are seated too close to any of
the airbag locations. When adjusting their
seat positions, it is important that both the dr iver and the front passenger keep their
upper bod ies and knees at the following
min imum safe distances:
- at least 10 inches (25 cm) between the
chest and the steering wheel/instrument
panel.
- at least 4 inches (10 cm) between the
knees and the lower part of the instru­
ment panel.
- The risk of personal injury increases if you
lean forward or to the side, or if the seat is
improperly positioned and you are not wear­
ing your safety belt. The risk increases even
more should the a irbag deploy.
- Always make sure that the knee airbag can
inflate without interference. Objects be­
tween you and the airbag can increase the
risk of injury in an accident by interfer ing
with the way the a irbag dep loys or by being
pushed into you as the airbag deploys.
- Never let anybody, especially children or
animals ride in the footwell in front of the passenger seat . If the a irbag deploys, this
can result in serious or fatal injuries.
- Never carry objects of any k ind in the foot­
well area in front of the driver's or pas­
senger's seat . Bulky objects (shopping
1 6 0
bags, for example) can interfere with or
prevent proper deployment of the a irbag.
Small objects can be thrown through the
vehicle if the airbag deploys and injure you
or your passengers.
- Make sure there are no cracks, deep scratch­
es or other damage in the area of the i nstru­
ment panel where the knee airbags are lo­
cated .
-If ch ildren are incorrectly seated, their risk
of injury increases in a coll ision
c::;, page 166, Child safety.
Side airbags
Description of side airbags
The airbag system can provide supplemental
protection to properly restrained occupants.
Fig. 162 Side airbag location in the driver"s seat
The side airbags are located in the sides of the
front seat backrests
c::;, fig. 162 and the rear back­
rest fac ing the doors . They are identified by the
word "AIRBAG".
The side airbags installed for the front seating
positions have been designed and certified to
help reduce the risk of injury that can be caused
by a irbags when they inflate, particu larly when
the occupant sitting next to it is not seated prop­
erly. The side airbag for the front passenger seat can be used with properly installed child re­
straints . Please be sure to read the important in­
formation and warnings whenever using a child
restraint in a vehicle: Safety belts
c::;, page 134,
Airbag system c::;, page 142, Child safety
c::;, page 166 .
The s ide ai rbag sys tem basica lly c onsi st s of: ..,.

Child safety
Advanced front airbag system and children
Your vehicle is equipped with a front "Advanced
Airbag System" in compliance with United States Federal Motor Vehicle Safety Standard (FMVSS)
208, as well as Canada Motor Vehicle Safety
Standard (CMVSS) 208 as applicable at the time
your vehicle was manufactured.
The Advanced Airbag system in your vehicle has
been certified to meet the "low-risk" require­
ments for 3- and 6-year old children on the pas­
senger side and small adults on the driver side.
The low risk deployment criteria are intended to
reduce the risk of injury through interaction with
the airbag that can occur, for example, by being
too close to the steering wheel and instrument panel when the a irbag inflates. In addition, the
system has been certified to comply with the
"suppression " requirements of the Safety Stand­
ard, to turn off the front airbag for infants up to
12 months who are restrained on the front pas­
senger seat in child restraints that are listed in
the Standard.
Even though your vehicle is equipped with an Ad ·
vanced Airbag system, all children, especially
those 12 years and younger, should always ride in the back seat properly restrained for their age
and size. The airbag on the passenger side makes
the front seat a potentially dangerous place for a
child to ride . The front seat is not the safest place
for a child in a forward-facing child safety seat . It
can be a very dangerous place for an infant or a
larger child in a rearward-facing seat.
The vehicle's Advanced Airbag System has a ca­
pacitive passenger detection system in the front
passenger seat cushion that can detect the pres­
ence of a baby or a child in a child restraint sys ­
tem on this seat .
The capacit ive passenger detection system regis­
ters the changes that result in an electrical field
when a child, a child restraint, and a baby blanket
are on the front passenger seat. The change in
the measured capacitance due to the presence of
a child, a child restraint, and a baby blanket on
the front passenger seat is related to the child restraint system resting on the seat. The meas ­
ured capacitance of a child restraint system var-
168
ies depending on the type of system and specific
make and model.
The electrical ca pacita nee of the various types,
makes, and models of child restraints specified
by the U.S .National Highway Traffic Safety Ad­
ministration (NHTSA) in the relevant safety
standard are stored in the Advanced Airbag Sys­
tem control unit together with the capacitances
typical of infants and a 1-year old child. When a
child restraint is used on the front passenger
seat w ith a typical 1 year-old infant, the Ad­
vanced Airbag System compares the capacitance measured by the capacitive passenger detection
system with the data stored in the electronic con­
trol unit.
Child restraints and Advanced front airbag
system
Regardless of the child restraint that you use,
make sure that it has been certified to meet Safe­
ty Standards and has been certified by its manu ­
facturer for use with an airbag . Always be sure
that the child restraint is properly installed at
one of the rear seating positions. If in exception ­
al circumstances you must use it on the front
passenger seat, carefully read all of the informa­
tion on child safety and Advanced Airbags and heed all of the applicable WARNINGS. Make cer­
tain that the child and child restraint are correct­ ly recognized by the capacitive passenger detec­
tion system in the front passenger seat, that the
front passenger airbag is turned off, and that the airbag status is always correctly signaled by the
PASSENGER AIR BAG OFF light .
Many types and models of child restraints have
been available over the years, new models are in­
troduced regularly incorporating new and im­
proved designs and older models are taken out of
production. Child restraints are not standardized.
Child restraints of the same type typically have
different weights and sizes and different "foot­
prints", the size and shape of the bottom of the
child restraint that sits on the seat, when they
are installed on a vehicle seat. These differences make it virtually impossible to certify compliance
with the requirements for advanced airbags with
each and every child restraint that has ever been .,..

Audi pre sense
Audi pre sense
Preventative passenger
protection
A pp lies to ve hicles : w ith Audi p re se nse
Pre sense can initiate steps to protect vehicle oc­
cupants in certain dangerous situations. The
functions described are available depending on
veh icle equipment :
Pre sense basic*
The following functions can be triggered in cer­
tain driving situations:
- Tensioning of the safety belts (for example,
during heavy braking): The front safety belts
have reversible belt pretensioners. If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger again .
- Closing the windows and the sunroof* (for ex­
ample, when
over-or understeering): The door
windows and the sunroof* are closed almost
completely until only a small gap is open .
Audi pre sense basic functions can be triggered at
speeds
above 20 mph (30 km/h).
Drive select : The dep loyment time is adapted in
Dynamic mode.
Pre sense front (vehicles with adaptive cruise
control*}
Pre sense front contains the functions of pre
sense basic . In addition, the likelihood of a rear­
end collision with the vehicle ahead is also calcu­
lated, within the limits of the system. If the risk
of a collision is detected, the following functions
can trigger :
- Braking guard
c:> page 90
- Tensioning of the safety belts
- Closing the windows and the sunroof*
Pre sense rear (vehicles with side assist*)
Pre sense rear contains the functions of pre sense
bas ic. In addition, the likelihood of a rear-end
coll ision from the vehicle beh ind is also calculat­
ed, within the limits of the system. If the risk of a
collision is detected, the following functions can
trigger:
184
- Tensioning of the safety belts
- Closing the windows and the sunroof*
Pre sense plus*
Pre sense plus contains the functions of pre
sense front and pre sense rear .
Error message
Audi pre sense: Unavailable
Preventative passenger protection is not availa­
ble. Drive to your authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected.
A WARNING
Pre sense cannot overcome natural physical
laws. It is a system designed to assist and it
cannot prevent a collision . Do not let the in­
creased safety provided tempt you into taking
risks. This could increas e your risk of a colli­
sion.
- The system can deploy incorrectly .
- Please note that the sensors do not always
detect all objects . This increases the risk of
a collision .
- Pre sense does not react to people or ani­
mals or objects that are crossing the vehi­
cle 's path or are difficult to detect
c:> page 84.
- Reflective objects such as guard rails or the
entrance to a tunnel, heavy rain and ice can
affect the function of the radar sensors and
the system's ability to detect a collision risk.
(D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. Pre sense can be impaired by this.
Have an authorized Aud i dealer or authorized
Audi Service Facility check their function.
{!) Tips
-Certain pre sense front functions switch off
when sport mode is switched off or when
driving in reverse.
1J11>

shared, please see your contract with the
wireless telecommunications provider and the
"About Aud i connect" tab in your vehicle's
MMI:
! MENUI button> Aud i connect > About
Audi conn ect.
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road ho ld ing and vehicle
dynamics to help reduce the probability of skid­
d ing and loss of vehicle control. It works only
when the engine is runn ing . E SC detects certain
d ifficult dr iving sit uat ions, including when t he
ve hicl e is begin ning to spin (yaw) out of contro l
and helps you to ge t the veh icle back under con­
tro l by se lective ly braking the wheels, and/or re ­
ducing engine powe r and provid ing steering as­
sistance to help hold the vehicle on the dr iver's
intended course. The indicator light
GJ in the in­
strument cluster blinks when ESC is taking action
to help you co ntrol the vehicle.
ESC has limitations. It is important to remember
that ESC cannot overcome the laws of physics. It
will not a lways be able to help out under all con­
d itions you may come up aga inst. For example,
ESC may not always be able to help you master
situations where there is a sudden change in the
coeff icient of friction of the road surface. When
there is a section of dry road that is sudde nly cov­
e red with water, slush o r snow, ESC cannot pe r­
form the same way it wo uld on the dry s urface . If
the vehicle hydrop lanes (rides on a cushion of wa­
ter i nstead of the road su rface), ESC wi ll not be
ab le to he lp you steer the veh icle because contact
with the pavement has been interrupted and the
ve hicle cannot be braked or steered. Dur ing fast
cornering, pa rticula rly on w inding roads, ESC
cannot always deal as effect ively w it h difficult
d riving si tuations tha n at lowe r speeds.
Always adjust your speed and driving style to road , traffic and weather cond itions . ESC cannot
override the vehicle's physical lim its, increase the
ava ilab le traction, o r keep a ve hicle on the road if
road departure is a resu lt of driver in attention .
I nstead, ESC imp roves the possibi lity of keep ing
Intellig ent Technology
the vehicle under contro l and on the road d uring
extreme mane uvers by using the driver's steering
i nputs to help keep the vehicle go ing in the in­
tended direction. If you are traveling at a speed
that causes you to run off the road before ESC
can provide any assistance, you may not exper i­
ence the benefits of ESC.
ESC is switched on all the time. In certain s itua­
tions when you need less tract ion, you can sw itch
off ASR by press ing the button
lm c> page 188,
fig . 177 . Be sure to switc h ASR on again whe n
you no longer need less traction.
The following systems are integrated in the ESC:
Anti-lock braking sy stem (ABS )
ABS prevents the wheels from locking when brak ­
ing. The vehicle can still be steered even dur ing
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal. A pulsing in the
brake pedal ind icates that the system is acting to
stab ilize the veh icle .
Brake assist system
The brake assist system can decrease braking dis­
tance. It increases braking power when the dr iver
presses the brake peda l quickly in emergency sit­
uat ions. You must press and ho ld the brake pedal
unt il the dange rous situation is over . In vehicles
with adaptive c ruise cont rol*, the b rake ass ist
system is more se nsitive if the distance detected
to the ve hicle ahead is too sma ll.
Anti-slip regulation (ASR)
ASR reduces engine power whe n the dr ive wheels
begin spin ning and adapts the force to the road
co ndit ions. This makes it eas ier to s tart, acce ler­
ate a nd d rive up incl ines.
Electronic differential lock (EDL)
The EDL brakes wheels that are spinning and
transfers the drive power to the other dr ive
wheel or wheels if the vehicle is equ ipped with all
whee l drive*) . This function is not available a t
highe r speeds .
In extreme cases, EDL automat ica lly switches off
to keep t he brake o n the braked wheel from over­
hea ting . T he veh icle is still working co rrectly. EDL
IJJ>
187

Intelligent Technology
will switch on again automat ically when condi­
tions have returned to normal.
Steering recommendation
The ESC helps to stabilize the veh icle by changing
the steering torque.
In vehicles with dynam ic steering*, ESC also
helps to stabilize the steering in critical situa­
tions.
Selective wheel torque control
Selective wheel torque control is used when driv­
ing on curves . The front wheel on the inside of
the curve or both wheels on the inside of the
curve are braked selectively as needed. This al­
lows more precise driving in curves.
Automatic post-collision braking system
The "Automatic post-collision braking system"
can help to reduce the risk of slid ing and of other
coll is ions after an accident . If the airbag control
module detects a collision above a certain vehicle
speed, the vehicle is braked by the ESC.
The vehicle does not brake automat ically if:
- the driver presses the accelerator pedal, or
- the braking force generated by the pressed
brake pedal is greater than the braking force
that would be initiated by the system, or
- the ESC, the brake system or the vehicle electri­
cal system are not functioning.
Switchin on/off
A WARNING
- The ESC and its integrated systems cannot
overcome the limits posed by natural physi­
cal laws. This is especially important on slip­
pery or wet roads. If the systems beg in act­
ing to stabilize your vehicle, yo u should im­
mediately alter your speed to match the
road and traffic conditions . Do not let the
increased safety provided tempt you into
taking risks. This could increase your risk of
a co llision.
- Please note the risk of a collision increases
when driving fast, especially through curves
and on slippery or wet roads, and when driv­
ing too close to objects ahead. The ESC and
its integrated systems cannot always pre­
vent collisions -there is still a risk of acci­
dents!
- Press the accelerator pedal carefully when
accelerating on even, slippery surfaces such
as ice and snow. The drive wheels can spin
even when these control systems are instal­
led and this can affect driving stability and
increase the risk of a collision.
{l) Tips
-ABS and ASR only function correctly when
all four wheels are equipped with identical
tires. Different tire sizes can lead to a reduc­
tion in engine power.
- You may hear noises when the systems de­
scribed are working.
ESC turns on automatically when you start the engine.
Fig. 177 Center conso le; !j. OFF button
188
The following examples are unusual situations
where it may make sense to switch sport mode
on in order to allow the wheels to spin:
- Rock ing the vehicle to free it when it is stuck
- Driving in deep snow or on loose ground
- Driving with snow chains