steering AUDI S7 2016 Service Manual

Airbag syste m
also not inflate in s ide or rear collisions, or in roll ­
overs.
A lwa ys rem ember : Airbags will deploy on ly once,
and only in certain kinds of collis ions. Your safety
be lts are a lways there to offer p rotection in those
situations in which airbags are not supposed to
deploy, or when they have already deployed; for
examp le, when your vehicle str ikes or is struck by
another vehicle after the first collision.
This is just one of the reasons why an airbag is a
supp lementary restra int and is not a substitute
for a safety belt. The airbag system works most
effectively when used w ith the safety belts.
Therefore, always properly wear your safety belts
c::> page 135.
A WARNING
Sitting too close to the steering wheel or in­
strument panel wil l decrease the effect ive­
ness of the airbags and will increase the risk
o f personal injury in a collision .
- Never sit closer than 10 inches (25 cm) to
the steering wheel or instrument panel.
- If you cannot sit more than 10 inches
( 2 5 cm) from the steer ing whee l, investi­
gate whether adaptive equipment may be
available to help you reach the pedals and
increase yo ur seating distance from the
steering wheel.
- All veh icle occupants and especia lly children
must be restrained properly whenever riding
in a vehicle. An unrestrained or improperly
restrained child could be injured by striking
the interior or by being ejected from the ve­
hicle du ring a sudden maneuver or impact.
An unrestrained or improperly restrained child is also at greater risk of injury or death
thro ugh contac t wit h an inflat ing airbag.
- If you are unrestrained, leaning forward, s it­
t ing s ideways o r out of position in any way,
yo ur risk of in jury is much higher.
- You w ill also receive serious inju ries and
c ould even be killed if you are up against the
airbag or too close to it when it inflates -
even with an Advanced Airbag.
144
-
- To reduce the risk of injury when an airbag
inflates, always wear safety belts properly
c::> page 138, Safety belts.
- Always make certain that ch ildren age 12 or
younger always ride in the rear seat. If chil­
dren are not properly restrained, they may
be severe ly injured or killed when an a irbag
inflates.
- Never let ch ildren ride unrestra ined or im­
prope rly restrained in the vehicle . Ad just the
front sea ts prope rly .
- Never ride with the back rest reclined .
- Always sit as far as possible from the steer-
ing wheel or the instrument panel
c::>page 127.
-Always sit upright with your back against
the backrest of your seat.
- Never p lace your feet on the instrument
panel or on the seat. Always keep both feet
on the f loor in front of the seat to help p re­
vent serious injur ies to the legs and hips if
the airbag infla tes.
- Never recline the front passenger 's seat to
transport objects . Items can also move into
the area of the side airbag o r the front air­
b ag du ring bra king or in a sudden maneu­
ver . Ob jects near the airbags can become
projectiles and cause in jury when an airbag
inflates.
A WARNING
Airbags that have deployed in a crash must be replaced.
- Use on ly original equipment airbags ap­
proved by Audi and installed by a trained
technician who has the necessary too ls and
diagnostic equipment to properly rep lace
any airbag in you r vehicle and assure system
effectiveness in a crash.
- Never perm it salvaged or recycled airbags to
be installed in your vehicle.
Child restraints on the front seat - some
important things to know
.,. Be s ure to read the important information and
hee d the WAR NIN GS for import ant details .,..

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-Always carefully follow the manufacturer's
ins tructions prov ided with the ch ild seat or
carrier.
- Always make sure that t he re is no thing on
the front passenger seat that will cause the capacitive passenger detection system in
the seat to signal to the Airbag System that
the seat is occupied by a person when it is
not, or to signal that it is occ upied by some­
one who is heav ier than the person actually
sitting on the seat. The presence of addi­
tional objects 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 wou ld
have worked without the object on the seat.
Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat occu­
pants.
F ig . 157 Locat ion of d river a irbag: in stee ring wheel
Fig . 158 Locat ion of front passenger's a irbag: in the instru ­
ment pa nel
Your vehicle is equipped w ith an "Advanced Air­
bag System" in compl iance with Un ited States
Ai rb ag system
Federal Motor Vehicle Safety Standard
(FMVSS) 208 as applicable at the time your vehi­
cle was manufactured. The safety be lts for the
seats have "pretensioners" that help to take slack
out of the belt system. The pretensioners are also
activated by the electron ic control unit for the
airbag system .
The front safety belts also have load limiters to help reduce the forces applied to the body in a
crash .
The airbag for the driver is in the steering wheel
hub
c:> fig . 157 and the airbag for the front pas­
senger is in the instrument pane l
c:>fig. 158. The
general location of the airbags is marked ''AIR ­
BAG".
There is a lot you need to know about the a irbags
in your vehicle. We urge you to read the detailed
information about airbags, safety belts and child
safety in this and the other chapte rs that make
up the owner's literature . Please be sure to heed
the WAR NINGS - they are extremely importa nt
fo r yo ur safety and the safety of you r passengers,
especially infants and small children .
_& WARNING
=
Never rely on airbags alone for protection.
- Even when they deploy, airbags provide only
supp lemental protection.
- Airbag work most effective ly when used
with p roperly worn safety belts.
- Therefore, always wea r you r safety belts and
make sure tha t everybo dy in your vehicle is
properly rest rained.
- Always hold the steering wheel w ith both
hands on the outside of the steering wheel
rim at the 9:00 o'clock and 3:00 o'clock po ­
sitions to help reduce the risk of persona l in­
jury if the driver's airbag inflates.
- Never ho ld the steering wheel at the 12
o'clock position or with your hands any­
where inside the steering wheel or on the
steer ing wheel hub. Holding the steering
wheel the wrong way increases the risk of
severe injury to the arms, ha nds, and head if
the dr iver airbag deploys .
~
147

Airbag syste m
A WARNING
Objects between you and the a irbag w ill in ­
crease the risk of injury in a crash by interfer­
ing with the way the airba g unfo lds and/or by
being pus hed into you as the airbag inflates.
- Always make sure nothing is in the front air-
bag depl oyment zone that could be struck
by the airbag when it inflates.
- Objects in the zone of a deploying a irbag
can become project iles 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 accessor ies 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 pane l or the
seat backrests; never place them between
these a reas 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 co uld cause serious in­
jury in a collision, especially when the a ir­
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 dur ing breaking or in a sud­
den maneuver . Objects near the a irbags can
fly dangerously th rough the passenger com­
partment and ca use i njur y, partic ularly
when the seat is reclined and the airbags in­
flate .
A WARNING
A person on the front passenge r seat, espe ­
cially infants and small children, wi ll 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
148
-
passenger airbag if an infant or a small child
is on the front passenger seat, nobody can
absolutely guarantee that dep loyment un­
de r these specia l condit ions is impossible in
all conceivable situations that may happen
during the useful life of yo ur vehicle.
- The Advanced Airbag System can dep loy in
accordance with the ,,low risk" option for 3-
and 6-year-o ld children under the U.S. Fed­
era l Standard if a c hild with e lectr ica l capac­
itance greater than the combined capaci­
tance of a typical one -yea r old infant re ­
strained in one of the forward facing or rear­
ward-facing child seats with which your ve­
hicle was certif ied 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 ch ildren, especially
12 yea rs and younger, should a lways ride in
the back properly restrained for their age
and size .
Advanced front airbag system
Your veh icle is equipped with a front Advanced
A irbag System in compliance w ith United States
Federa l Mo tor Ve hicl e Safety Standa rd 208 asap­
plicable at the time your vehicle was manufac­
tured.
The front Advanced Airbag System supp lements
the safety be lts to p rov ide additional protec tion
f or the driver 's and front passenger 's heads and
u pper bodies in frontal crashes . The airbags in­
flate only in fronta l impacts when the ve hicle de­
ce lerat ion is high enough.
The front Advanced Airbag System for the front seat occ upants is not a s ubstitute for yo ur safety
belts. Rather , it is part of the overall occupant re­
stra int system in your vehicle. A lways remember
that the airbag system can only he lp to protect
you, if you are sitting upr ight, wear ing your safe-
ty belt and wear ing it properly . Th is is why you
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and your passengers must always be properly re­
strained, not just because the law requires you to
be.
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 very small adults on the driver
side. The low risk deployment criteria are intend­
ed to help 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
and instrument panel when the airbag inflates.
In addition, the system has been certified to
comply with the "suppression" requirements of
the Safety Standard, to turn off the front airbag
for infants 12 months old and younger who are
restrained on the front passenger seat in child re­
straints that are listed in the Standard
q page 169, Child restraints and Advanced front
airbag system.
"S uppression " requires the front airbag on the
passenger side to be turned off if:
- a child up to about one year of age is restrained
on the front passenger seat in one of the rear­
facing or forward-facing infant restraints listed
in Federal Motor Vehicle Safety Standard 208
with which the Advanced Airbag System in your
vehicle was certified. For a listing of the child
restraints that were used to certify your vehi­
cle's comp liance with the US Safety Standard
qpage 169,
- When a person is detected on the front passen­
ger seat that has an electrical capacitance that
is more than the total electrical capacitance of
a child that is about 1 year old restrained in one
of the rear-facing or forward-facing infant re­
stra ints (listed in Federal Motor Vehicle Safety
Standard 208 with which the Advanced Airbag
System in your vehicle was certified), the front
airbag on the passenger side may or may not
deploy.
The
PASSENGER AIR BAG OFF light comes on
when the electronic control unit detects a total
e lectr ical capacitance on the front passenger seat
that requires the front airbag to be turned off. If
the
PASSENGER AIR BAG OFF light does not
Airbag system
come on, the front airbag on the passenger side
has not been turned off by the control unit and
can deploy if the control unit senses an impact
that meets the conditions stored in its memory.
If the total electrical capacitance registered on
the front passenger seat is more than that of a
typical 1 year-old, but less than the weight of a
small adult, the front airbag on the passenger
side may deploy (the
PASSENGER AIR BAG OFF
light does not come on).
For example, the airbag may deploy if:
-a small child that is heavier than a typical 1
year-old child is on the front passenger seat (re­
gardless of whether the child is in one of the
child seats listed
q page 169),
- a child who has outgrown child restraints is on
the front passenger seat.
If the front passenger airbag is turned off, the
PASSENGER AIR BAG OFF light in the center of
the instrument panel will come on and stay on.
If the front passenger airbag deploys, the Federal
Standard requires the airbag to meet the "low
risk" deployment criteria to help reduce the risk
of injury through interaction with the airbag.
"Low risk" deployment occurs in those crashes
that take place at lower decelerations as defined
in the electronic control unit
q page 154.
Always remember: 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 impor tant infor­
mation in the sections that follow and be sure to
heed all of the WARNINGS .
_& WARNING
To reduce the risk of injury when an airbag in­
flates, always wear safety belts properly.
- If you are unrestrained, leaning forward, sit­
ting sideways or out of position in any way,
your risk of injury is much higher.
- You will also receive serious injuries and
could even be killed if you are up against the
airbag or too close to it when it inflates -
even with an Advanced Airbag
9page 143.
149

-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 154.
-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 ~
page 155, fig. 160 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 belt 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 1.1'1
N seat or disconnect wires from it. ID ......
Airbag system
-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
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@ For the sake of the environment
Undeployed airbag modu les and pretension­
ers might be classified as Perchlorate Mater ial
- special handling may apply, see
www.dtsc.ca.gov/hazardouswaste/perchlo­
rate. When the vehicle or parts of the re­
straint system including airbag modules and
safety belts w ith pretens ioners are scrapped,
all applicable laws and regulations must be
observed. Your authorized Audi dealer is fa­
miliar with these requirements and we recom­
mend that you have your dealer perform this
service for yo u.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced A irbag System
performs in a crash. For example, using tire-rim
comb inat ions not approved by Audi, lowering the
vehicle, changing the stiffness of the su spension,
including the springs, suspension struts, shock
absorbers etc . can change the forces that are
measured by the airbag sensors and sent to the
e lectronic control un it. Some suspension changes
can, for example, increase the force levels meas­
ured by the sensors and make the airbag system
deploy in crashes in which it would not deploy if
the changes had not been made . Other kinds of
changes may reduce the force levels measured by
the sensors and prevent the airbag from deploy­
ing when it should.
_& WARNING
Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance and in ­
crease the risk of ser ious personal injury in a
crash.
- Never install suspens ion components that
do not have the same performance charac­
teristics as the components originally instal­
led on your veh icle.
- Never use tire-rim combinations that have
not been approved by Audi.
Airbag system
Knee airbags
Description of knee a irbags
Applies to vehicles: with knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants .
Fig. 161 D river 's knee a irbag
T he driver knee airbag is in the instrument panel
underneath the steering wheel
¢fig.161, the
airbag for the passenger is at about the same
height in the instrument panel underneath the
glove compartment.
The knee airbag offers additional protection to
the driver's and passenger's knees and upper and
lower thigh areas and supplements the protec­
tion provided by the safety belts.
If the front airbags dep loy, the knee airbags also
deploy in frontal collisions when the dep loyment
threshold stored in the control unit is met
¢ page 152 , More important things to know
about front airbags .
In addition to their normal safety function, safe­
ty belts help keep the driver or front passenger in
position in a frontal collision so that the airbags
can provide supplemental protection .
The airbag system is not a substitute for your
safety belt . Rather, it is part of the overall occu­
pant restraint system in your vehicle. Always re­
member that the airbag system can only help to
protect you if you are wearing your safety belt
and wearing it properly. This is why you should a l­
ways wear your safety belt, not just because the
law requires you to do so¢
page 135, General in-
formation .
IJI>
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Important safety instructions on the knee
airbag system
Applies to vehicles: with k nee a irbags
Airbags are only supplemental restraint s. 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 belts and airbags
to prov ide supplementa l protection.
A WARNING
An inflating knee airbag can cause ser ious in­
jury. Wearing safety belts incorrect ly and im­
proper seating positions increase the risk 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 a irbag locat ions . When adjust ing their
seat positions, it is important that both the
dr iver and the front passenger keep the ir
upper bod ies and knees at the followi ng
mi nimum safe distances :
- at least 10 inches (25 cm) between the
chest and the steering wheel/instr ument
panel.
- at least 4 inc hes (10 cm) between the
knees and the lower part of the instru­
ment panel.
- The risk of persona l injury increases if yo u
lean forward or to the s ide, or if the seat is
improperly pos it ioned and you are not wear­
ing your safety belt . The risk increases even
more should the airbag deploy .
- Always make sure that the knee airbag can
inflate without inte rference . Objects be ­
tween you and the a irbag can increase the
risk of i nju ry i n an accident by inte rfe ring
w ith the way the ai rbag dep loys o r by be ing
pushed into you as the airbag dep loys.
- Never let anybody, especially ch ildren o r
animals ride in the footwell in front of the
passenger seat . If the airbag deploys, th is
can result in ser ious or fatal injuries .
- Never carry objects of any kind in the foot­
well area in front of the driver's or pas­
senger's seat . Bul ky objects (shopping
-
Airb ag system
bags, for examp le) can interfere with or
prevent proper deployment of the airbag .
Small objects can be thrown through the
vehicle if the airbag deploys and injure you
or your passengers.
- Make sure the re are no cracks , deep scratch­
es o r other damage in the area of the instru­
ment panel where the knee airbags are lo­
cated .
- I f chi ldren are inco rrectly seated, their ris k
of injury increases in a coll is ion
c::> page 167, Child safety.
Side airbags
Description of side airbags
The airbag system can provide supplemental
protection to properly restrained occupants.
Fi g. 163 Sid e airbag location in the driver's seat
The side airbags are located in the sides of the
front seat backrests
c::> fig. 163 and the rear back­
rest facing the doors . They are ident ified by the
word "AIRBAG".
The side airbags insta lled for the front seat ing
pos it ions have been des igned and certified to
help reduc e the r isk of injury that can be caused
by a irbags when they inflate, particularly when
t h e occ upant s itting next to it is not seated p rop­
erly. The s ide a irbag for the front passenger seat
can be used with properly insta lled child re ­
straints. P lease be sure to read the important in­
formation and warn ings whenever using a ch ild
restraint in a vehicle : Safety be lts
c::> page 135,
Airbag system c::> page 143, Child safety
<=>page 167.
The side airbag sy stem basi cally consi st s of: ..,.
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Advanced front airbag system and children
Your vehicle is equipped wit h a front "Advanced
A irbag System" i n compliance w it h United States
F ederal Motor Vehicle Safe ty Standard ( FMVSS)
208 as applicable at the time your vehicle was
manufactured .
The Advanced Airbag system in your ve hicl e has
been certified to mee t the " low -risk" requ ire­
ments for 3 -and 6-year o ld children on the pas ­
senger side and small adults on the driver side.
T he low risk deployment criteria are intended to
reduce the r isk of injury through interaction with
the airbag that can occur, for example, by being
too close to the steering whee l and instrument
panel when the a irbag inflates . In add it io n, the
system has been cert ified to comply with the
"suppression" requiremen ts of the Safety Stand­
ar d, to turn off t he front airbag for infa nts up to
12 months who are restra ined on the front pas­
senger seat in child restraints that are listed i n
the Standard.
E ven though yo ur vehicle is equ ip ped with an Ad­
vanced A irbag sys tem, all children, especia lly
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 potent ially dangerous p lace for
a
chi ld to r ide. The fro nt seat is not the safes t place
for a child in a forward-facing child safety seat . It
can be a very dangerous place for a n infant or a
l arger child in a rea rward-facing seat .
T he vehicle's Advanced Airbag System has a ca­
pacitive passenger detect ion system in the front
passenger seat cush ion that ca n detec t the p res­
e n ce of a baby o r a child in a c hild restra int sys­
tem on this seat.
The capacit ive passenger detection system regis ­
ters the changes that result in an electrical field
when a ch ild, a child rest raint, and a baby b la nk et
a re on the fron t passenger sea t. T he change in
the meas ured c apac it a nce due to the presence of
a child,
a chi ld restraint, and a baby blanket on
the front passenger seat is re lated to the child re­
straint system resting on the seat . The measu red
capacitance of a chi ld restraint system va ries de-
Child sa fety
pending on the type of sys tem and specific make
and mode l.
T he elec trical c apacit a nce of the va rious types,
makes, and mo dels o f child restra ints specifie d
by the U.S.National Highway Traff ic Sa fety Ad ­
ministration (NH TSA) in the relevant safety
standard are stored in the Advanced Airbag Sys­
tem control unit together w it h the capacitances
typ ica l of infants and a 1-year old child. When a
c h ild restra int is used on the front passenger seat
with
a typ ica l 1 year-old in fant, the Advanced Air­
bag System compa res the capacitance measu red
by the capacitive passenge r dete ction system
wi th t he dat a stored in the elec tronic con trol
u ni t.
Child restraints and Advanced front airbag
system
Regardless of the c hild restra int that you use,
make sure that it has been cert ified to meet Unit­
ed States Federa l Moto r Veh icle Safety Standa rds
and has been ce rtified by its manufacture r fo r
u se with an a irbag. Always b e sur e t hat t he c hild
r est rain t is prope rly insta lled a t one of the rear
sea ting pos itions. If in excep tional circ ums tan ces
yo u m ust use it on the front passenge r seat, care ­
fully read a ll of the information on chi ld safety
and Advanced Airbags and heed all of the appli ­
cable WARNINGS. Make certain that the child
and child restra int are correctly recogni zed by the
capacit ive passenger detection system i n the
front passenger seat, that the front passe nger
airbag is turned off, and that the a irbag status is
always cor rect ly signa led by the
PASSENGER AIR
BAG OFF
light .
Many types and models of child rest raints have
been available ove r the years, new mode ls a re in­
t rod uced regu larly in co rporating new and im­
proved de signs and older mode ls are take n ou t of
produ ct io n. Ch ild restra ints are not s tandar dized.
Child rest rain ts of the same type typ ically have
different weights and sizes and different "foot­
prints", the size and shape of t he bottom of the
c hi ld restra int that sits on the seat, when they
are installed on
a vehicle seat. These d ifferences
make it virtua lly impossib le to cert ify compliance
with the requirements for advanced airbags with .,.
169

M N <( (.J
'SI: ,...., \!) 1.1'1
N \!) ,....,
Audi pre sense Preventative passenger
protection
App lies to veh icles: with Audi p re se nse
Pre sense can initiate steps to protect veh icle oc­
cupa nts in certain dangerous situations. The
functions descr ibed a re ava ilable depending on
ve hicle equ ipme nt:
Pre sense ba sic*
The fo llow ing funct ions can be triggered in cer­
tain driving situations:
- Tensioning of the safety be lts (for example,
during heavy b raking) : The front safety belts
have revers ib le be lt pretensioners. If a collision
does not occur, the safety belts loosen sli ght ly
and are ready to trigger aga in.
- Clos ing the windows and the sunroof* (for ex­
amp le, when over- or understeering): The door
windows and the sunroof* are closed almost
completely until o nly a sma ll gap is open .
Audi pre sense basic functions can be triggered at
speeds above 20 mph (30 km/h).
Drive se lect: The deployment 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 add ition, the likelihood of a rear­
end collis ion 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:
- Brak ing guard
¢ page 91
-Tensioning of the safety be lts
- Closing the w indows and the sun roof*
Pre sense rear (v ehicles with side assist* }
Pre sense rea r contains the funct ions of pre sense
bas ic. I n addit io n, the li kelihood of a rea r-end
coll is ion from the veh icle behi nd is also calc ulat­
ed, w it hi n the lim its of the system. If the risk of a
collision is de tected, the following functions can
trigger :
Audi pre sense
-Tens ion ing of the sa fe ty belts
- Clos ing the windows an d the s unroo f*
Pre sense plus*
P re sense p lus conta ins the functions of pre
sense front and p re se nse rea r.
Error mes sage
Aud i pre sense: Unavailable
Preventative passenge r protection is not availa ­
ble. Drive to yo ur autho rized Audi deale r immedi­
ately to have the ma lfunction corrected.
A WARNING
-
Pre sense cannot overcome natural physical
l aws. It is a system designed to assist and it
ca nnot prevent a collision. Do not let the in­
creased safety prov ided temp t you into taking
risks . This could incr eas e yo ur risk of a co lli­
s ion.
- The system can deploy incorrectly .
- Please note that t he sensors do not always
detect a ll objects . This inc reases the r isk of a
coll is io n.
- Pre sense does not react to people or a ni­
mals or objec ts that are crossi ng the vehi­
cle 's path o r are difficult to det ect
¢ page 85.
-Reflec tive ob jects s uch as guard rai ls o r the
entrance to a tunne l, heavy rai n and ice can
a ffec t the fu nction of the rada r senso rs and
t he system's ability to de te ct a co llision risk.
(D Note
The sensors can be d isplaced by impacts or
d amage to the bumper, w heel housing a nd
u nder body. Pre se nse can be impa ired by th is .
H ave an a utho riz e d Aud i de aler o r au th orized
A udi Service Facility check the ir func tion .
(D Tips
-Certa in p re sense fro nt functions swi tch off
w he n sp o rt mode is sw itche d off or w hen
dr iving in reverse .
- T he p re sense fun ctions m ay not be av aila ­
b le i f th ere is a m alfu nction in t he ES C sys­
tem or t he a irbag con tro l mod ule.
185

Intelligent Technology
shared, p le a se see yo ur contract with the
wireless telecomm unications provider and the
"About Aud i connect" tab in your vehicle's
MMI:
! MENUI button> Audi connect > About
Audi connect .
Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of sk id­
d ing and loss of veh icle control.
It works only
when the engine is runn ing. ESC detects certa in
d ifficult d riving situations, including when the ve­
h icle is beginn ing to sp in (yaw) o ut of control and
he lps you to ge t the veh icle back u nder cont ro l b y
selec tively braking the whee ls, and/or reduc ing
engine power and providing steering assistance
to help hold the vehicle on the driver's i ntended
course. The indicator light
DJ in the instrument
cluster blinks when ESC is taking action to help
you control t he veh icle.
ESC has lim itations. It is important to remember
that ESC cannot overcome the laws of physics. It
will not a lways be ab le to he lp out under all con­
d itions you may come up against. For example,
ESC may not always be able to help you master
situations where there is a sudden change in the
coefficient of friction of the road surface. Whe n
there is a section of d ry road tha t is s udden ly cov ­
ere d wi th wa ter, s lush or snow, ESC ca nnot per­
form the same way it wou ld on the d ry s urface . If
the vehicle hydroplanes ( rides on a cushion of wa ­
ter instead of t he road surface), ESC wi ll not be
ab le to he lp you steer the veh icle because contact
with the pavement has been i nterrupted and the
ve hicle cannot be b raked or steered. Dur ing fast
cor ne ring, particula rly o n w inding roads, ESC
cannot a lways deal as eff ect ively wi th d iff icu lt
d riving situat ions than at lowe r speeds.
Always ad just your speed and dr iv ing style to
road, traffic and weather conditions. ESC ca nnot
over ride the vehicle's physical limi ts, increase t he
ava ilab le tract io n, or keep a vehi cle on t he road if
roa d de pa rture is a res ult o f driver in att enti on.
I nstead, ESC improves the poss ibility of keeping
188
the veh icle unde r control and on the road dur ing
extreme maneuve rs by using the dr iver's stee ring
i nputs to help keep the vehicle going in the in ­
tended direction. If yo u are traveling at a speed
that causes you to run off the road before ESC
can p rov ide any assistance, you may not experi­
ence the benefits of ESC.
ESC is switc hed on all the time. In certain s itua­
tions when you need less tracti on, you can switch
off ASR by press ing the button
[ru c:> page 189,
fig . 178. Be sure to sw itch ASR on aga in when
you no longer need l ess traction.
The following systems are integrated in the ESC:
Anti -lock braking system (ABS )
ABS prevents the whee ls from locki ng when brak ­
i ng . T he veh icle can st ill be stee red even during
hard braking. App ly steady pressure to the brake
pedal. Do not pump the pedal. A puls ing in the
brake pedal indicates that the system is acting to
stab ilize the veh icle.
Brake assist sy stem
The bra ke ass ist system can decrease braking dis­
tance. It increases bra king power when the driver
presses the brake peda l quickly in emergency sit­
uat ions. You must press and hold the b rake peda l
u nt il the dange rous situat io n is over . In vehicles
with adaptive cruise co ntro l*, the brake ass ist
system is more sensitive if t he d ista nce detected
to t he veh icle a head is too sma ll.
Anti-slip regulation (ASR)
ASR red uces eng ine power when the drive wheels
begin spin ning and adapts the force to the road
cond it ions . Th is makes it eas ier to sta rt, acce ler­
ate a nd dr ive up incl ines.
Electronic differential lock (EDL)
EDL applies t he brakes to a whee l that starts
sp inning a nd tra nsfe rs the d rive power to the
othe r drivi ng whee ls. This function is not ava ila­
ble at hig he r speeds.
In extreme cases, EDL automatically sw itches off
to keep the brake o n the braked whee l from over­
hea ting. The vehicle is st ill work ing cor rect ly. EDL ..,.