lock AUDI S8 2015 Workshop Manual

as possible before installing the child
restraint.
- Always make sure that nothing pre­
vents the front passenger's seat from
be ing moved to the rearmost position
in its fore and aft adjustment range.
- Always make sure that the backrest is
in the upr ight position.
- Always buck le the child safety seat firmly
in place even if a child is not sitting in it.
A loose ch ild safety seat can fly around
dur ing a sudden stop or in a col lision .
- Always read and heed all WARNINGS
whenever using a child restrained in ave­
hicle is being used
c::> page 143, Safety
belts,
c::> page 151, Airbag system and
c::> page 17 4, Child Safety.
A WARNING
T o reduce t he ris k of serious injury, make
sure that the
PASSENGER AIR BAG OFF
light comes on and stays on whenever a
child rest raint is installed on the front pas ­
senger seat and the ignition is switc hed
on.
- Take the child restraint off t he fro nt pas­
senger seat and install it properly at one
of the rear seat positions if the
PASSEN ·
GER AIR BAG OFF
light does not stay on.
- Have the airbag system inspected by
your authorized Aud i dealer immediate­
ly.
Secure unused safety belts on the rear
seat
F ig. 175 Schematic overv iew: keep un used safety belts
away from children in child safety seats.@-oute r rear
safety belt,
@ -center rear safety belt
Child S afety 1 79
If a child safety seat is used on the rea r bench,
especially with LATCH universal lower ancho­
rages, the unused safety belts
must be se ­
cured so that the child in the child restraint
cannot reach them
c::> &.
-Guide the safety belt webbing behind the
head restra int of the ad jacent seat
c::> fig. 175. When doing so, do not engage
the switchable locking retractor! You shou ld
not hear a "click ing" sound when wind ing up
the safety belt .
- Let the belt retractor wind up the safety belt
webbing.
A WARNING
A child in a chi ld safety seat installed with
the LA TCH lower anc horages or with the
standa rd safety be lt or a child in a booster
se at o n the rea r seat co uld play with un­
used rear seat safety belts and become en­
tang led . This cou ld cause the chi ld ser ious
personal injury and even death.
-A lways secure unused rear seat sa fe ty
be lts out of reach of children in child
seats such as by proper ly rout ing them
around the head restraint of the seat
where the ch ild restraint is installed.
- Never activate the switchable locking re­
tracto r when routing the safety belts
around the head restraints.
- Never let anyone s it at the center rear
seating position if the center rear safety
be lt has been routed around a rear head
restra int .

180 Child Safet y
Child safety seats
Infant seats
Babies and infants up to about one year old
and 20 lbs. or 9 kg need special rearward-fac ­
ing child restraints that support the back,
neck and head in a crash.
-- /
Fig . 176 Sche matic overview: rearward- facing infant
seat, properly installed o n the rear seat
> When using the vehicle safety belt to install
a ch ild safety seat, you must first activate
the convertible locking retractor on the
safety belt to prevent the child safety seat
from moving ¢
page 184 or install the seat
using the LATCH attachments.
> Push the child safety seat down with your
full weight to get the safety belt rea lly tight
so that the seat cannot move forward or
sideways more than one inch (2.5 cm).
> Secure unused safety belts on the rear seat
¢page 179.
Infants up to about one year (20 lbs. or 9 kg)
are best protected in special infant carriers
and child safety seats designed for their age
group . Many experts believe that infants and
small children should ride only in spec ial re­
straints in which the chi ld faces the back of
the vehicle . These infant seats support the ba­
by's back, neck and head in a crash ¢
fig. 176.
The airbag on the passenger side makes the
fro nt seat a potentially dangerous place for a
child to r ide . The front seat is not the safest
p lace for a child in a forwa rd-facing child seat.
I t is a very dangerous p lace for an infant or a
larger child in a rearward-facing seat.
A WARNING
-Not using a child safety seat, using the
wrong child safety seat or improperly in ­
stalling a ch ild restra int increases the risk
of ser ious personal in ju ry and death in a
crash.
- Never install rear-facing child safety
seats or infant ca rr ie rs on the front pas­
senger sea t -even with an Advanced Air­
bag Sys tem. A c hild will be ser iously in­
jured and can be killed whe n the inflat ­
ing ai rbag hits the child safety seat or in­
fant carrier with great force and smashes the child safety seat and child against
the backrest, center armrest, door or
roof ¢
page 153, Child restraints on the
front seat -some important things to
know.
- Always install rear-facing ch ild safety
seats or infant ca rr ie rs on the rear seat .
- Never install a rear-fac ing ch ild restra int
in the forward-fac ing direct ion. Such re­
straints are designed for the special needs of infants and very small ch ild ren
a nd cannot protect them prope rly if the
seat is forward- facing.
- If you m ust insta ll a rearwa rd fa cing
child safety seat on the fro nt passenger
seat because of exceptiona l circumstan­
ces and the
PASSENGER AIR BAG OFF
light does not come o n and stay on, im­
mediately insta ll the rear-fac ing child
safety seat in a rear seating position and
have the airbag system inspected by your
Aud i deale r.
- Always read and heed all WARNINGS
whenever us ing a child restrained in ave­
h icle is being used
¢ page 143, Safety
belts,
~ page 151, Airbag system and
c::> page 174, Important things to know.

Convertible child safety seats
Properly used convertible child safety seats
can help protect toddlers and children over
age one who weigh between 20 and 40 lbs. (9
and 18 kg) in a crash.
F ig . 177 Sche mati c overvi ew : ins tallat ion o f the at­
tachments appl icable to a LA TCH seat
F ig. 178 Schem atic overview: installat ion of t he seat
u sing the ve hicle' s safety b elt sy stem
.. When using the vehicle safety be lt to insta ll
a chi ld safety seat, you must f irst activate
the convertible locking feature on the safety
belt to prevent the child safety seat from
moving
c::> page 184 or install the seat using
the LATCH attachments .
.,. Push the child safety seat down with your
full weight to get the safety belt really t ight
so that the seat cannot
move forward or
s ideways more than one inch (2.5 cm)
c:;, page 184.
.,. If the child safety seat is equ ipped with a
tet her strap, attach it to the tether anchors
c:;, page 191 .
.. Secure unused safety belts on the rear seat
c:;, page 179.
A toddler or child is usually too large for an in­
fant restraint if it is more than one year o ld
and weighs more than 20 lbs. (9 kg) .
Child Safety 181
Toddlers and children who are older than one
year up to about 4 years old and weigh more
than 20 lbs (9 kg) up to 40 lbs. (18 kg) must
always be properly restrained in a child safety
seat cert ified for their si ze and weight
c:;, fig . 177 and c:;, fig. 178 .
The airbag on the passenger side makes the
front seat a potentially dangerous place for a
child to ride . The front sea t is not the sa fest
place for a child in a forward -facing child safe ­
ty seat .
It is a very dangerous place for a n in­
fant or a large r ch ild in a rearward-facing seat .
.&_ WARNING
Not using a child safety seat, using the
wrong child s afety seat o r imprope rly in­
stalling a chi ld restraint increases the risk
of serious personal injury and death in a
collision or other emergency situation .
- Ch ildren on the front seat o f any car,
even with Advanced Airbags, can be se ri­
ously injured or
even killed when an air­
bag inflates. A chi ld in a rearward-facing
child safety seat installed o n the front
passenger seat will be serious ly injured
and can be k illed if the front airbag in­
flates -
even with an Advanced Airbag
System .
- The inflating airbag will h it the ch ild
safety seat or infant carrier with great
force a nd will smash the child safety seat
and child against the ba ckrest, center
a rm rest, door or roof.
- Always install rear-fac ing ch ild safety
seats o n the rear seat .
- If you must install a rearwa rd fac ing
child safety seat on the fro nt passenger
seat because of exceptiona l circumstan­
ces and t he
PASSENGER AIR BAG OFF
light does not come on and stay on, im­
mediately insta ll the rear -fac ing chi ld
safety seat in a rear seating position and have the airbag system inspected by your
Aud i dea ler .
- The rear side of the child safety seat
should be pos itioned as close as poss ib le
~

182 Child Safet y
to the backrest on the veh icle seat. Ad­
just the rear seat head restraint if it is difficult to install the child seat w ith the
head restraint in place <=>
page 137. Driv­
ing with head restraints that are not
properly ad justed increases the risk of
serious o r fa tal neck injury dramatically.
- Always read and heed all WARNINGS
whenev er using a child restrained in ave­
hicle is being use d
¢page 143, Safety
belts, ¢ page 151, Airbag sys tem
and
¢ page 174, Importan t things to know.
_& WARNING
If exce ptional circumstances requ ire the
use of a forwa rd-facing child restraint on
the front passenger's seat, the ch ild's safe­
ty and well-being require that the follow­ ing special precautions be taken :
- Make sure the forward-facing seat has
been designed and certif ied by its manu­
facturer for use on a front seat with a
passenger front and side a irbag.
- Always follow the man ufacturer's in­
struct io ns provided with the child safety
seat or infant car rier .
- Always move t he front passenger seat in­
to the rearmost posit ion of the passen ­
ger seat's fore and aft ad justment range,
and as far away from th e airbag as possi­
ble before ins tall ing the child res traint .
- Always make su re that noth ing prevents
the front passenger's seat from bei ng
moved to the rearmost posi tion in its
fore and aft adjus tme nt r an ge.
- Alw ay s make su re the backres t is in an
upr igh t position .
- Make su re that the
PASSENGER AIR BAG
OFF
light comes o n an d stays on all the
t ime whenever the ignition is switc hed
on.
- If the ligh t does no t st ay on, pe rform the
che cks¢
page 161, Monitoring the Ad­
vanced Airbag System.
- Ta ke the child restrain t off t he fr ont p as­
senger seat and install it properly at one
of the rear seat positions if the
PASSEN· GER AIR BAG OFF
light does not stay on
whenever the ignit ion is switched on.
Booster seats and safety belts
Properly used booster seats can help protect
children weighing between about 40 lbs . and
80 lbs. (18 kg and 36 kg) who are less than 4
ft. 9 in . (57 in ches/1.45 meters) tall.
:e N 0 ±
i'il
F ig. 179 Rea r seat: c hild p rope rly rest rai ned in a boos ­
ter se at
T he vehicle 's safety belts a lone will not fit
most children until t hey are at least 4 ft. 9 in .
(57 inches/1.45 meters) tall and weigh about
80 lbs. (36 kg). Booster seats raise these chi l­
dren up so that the safety belt w ill pass prop ­
erly over the stronger parts of the ir bodies
and the safety be lt can he lp protect them in a
c rash .
.,. Do not use the convert ible lock ing retractor
when us ing the vehicle's safety belt to re­
strain a ch ild on a booster seat .
.. The s hou lde r belt must lie as close to the
center of the ch ild's collar bone as possib le
and m ust lie flat and snug on the upper
body. It must never lie across the throat or neck. The lap be lt must lie across the pelvis
and never across the stomach or abdomen .
Make sure the belt lies flat and snug. Pull on
the belt to tighten if necessary .
.,. If you must transport an o lder child in a
booster seat on the front passenger seat,
you ca n use the safety be lt height adjust­
ment to help adj ust the shou lde r portion
properly .
.,. Secure unused safety belts on the rear seat
¢ page 179. ...,.

184 Child Saf ety
- Never let a child ride in the cargo area of
your vehicle .
- Always remember that a chi ld leaning
forward, sitt ing s ideways or out of posi­
t ion in any way during an acc ident can be
struck by a deploying airbag . This will re­
sult in serious personal injury or death .
- If you must install a booster seat on the
front passenger seat because of excep­
t ional circumstances the
PASSENGER
AIR BAG OFF
light must come on and
stay on, whenever the ignition is sw itch­
ed on.
- If the PASSENGER AIR BAG OFF light
does not come on and s tay on, perform
the chec ks described
¢ page 161, Moni­
toring the Advanced Airbag System.
- T ake the child rest raint off the front p as­
senger seat and install it properly at one
of the rea r seat positions if the
PASS EN·
GER AIR BAG OFF
light does not stay on
whenever the ignition is switched on .
- Always read and heed all WARNINGS whenever using a child rest rained in ave­
hicle is being used
¢ page 143, Safety
belts,¢ page 151, Airbag system
and
¢ page 174, Important things to know.
Installing a child safety
seat
Securing a child safety seat using a
safety belt
Safety belts for the rear seats and the front
passenger can be locked with the convertible
locking re tractor to properly secure child
safety seats.
The safety belts emergency locking retractors
for the rear seats safety belts and for the
fro nt passenger's seat safety belt have a con­
vertible locking retracto r for child restra ints .
The safety belt must be locke d so that belt
webbing can not unreel. The ret ractor ca n be
activ ated to lock the safety be lt and p revent
the safety belt webbing from loosening up
d ur ing normal driv ing . A child sa fe ty seat can
on ly be proper ly installed whe n the safety belt is loc
ked so that the chi ld and child sa fety
seat wi ll stay in place.
Alw ays remember: Even tho ugh yo ur vehicle is
equipped wi th an A dvan ced Airbag system, all
c hi ldren, especially those 1 2 years and young ­
er, sho uld always ride in the back seat prope r­
l y restra ined fo r the ir age and size.
A WARNING
Improperly installed ch ild safety seats in­
crease the risk of serious personal injury
and death in a co llision.
- Always make sure that the safety belt re­
tractor is locked when insta lling a child
safety seat. A n un locked safety belt re­
trac to r cannot hold the child safety seat
in place dur ing norma l driving o r in a
crash.
- Always buckle the child safety seat firmly
in place even if a ch ild is not si tt ing in it.
A loose child sa fe ty se at can fly aroun d
du ring a s udden stop or in a collision .
- Always make sure that the rear seat
backres t to wh ich the center rear safety
belt is attached is securely latched when ­
eve r the rea r center safety belt is being
used to secure a ch il d restra int .
- If the backrest is not securely la tc h ed,
the child and the child restraint will be
thrown forward together with the back­
rest and will strike parts of the vehicle
interior. The child can be seriously in­
jured or killed.
- Never install rear-facing child safety
seats or infant ca rr ie rs o n the front pas­
senger seat . A child will be serious ly in­
jured and can be killed when the passen­
ge r airbag inflates.
- The infla ting airbag will h it the ch ild
safety seat or infant carrie r w ith gr eat
for ce and will smas h the child safe ty seat
a nd child ag ai nst t he back res t, cen ter
a rmrest, doo r or roof.
- Always inst all rear-fa cing ch ild safety
se ats or in fa nt c arrie rs on the re ar se at.

186 Child Safety
though an adult were on the seat and de­ploy the Advanced Airbag when it must
be suppressed causing serious or even
fatal injury to the child .
- Make sure that the
PASSENGER AIR BAG
OFF
light comes on and stays on all the
time whenever the ignition is switched
on.
- If the
PASSENGER AIR BAG OFF light
does not come on and stay on, immedi­
ately install the rear-facing child safety
seat in a rear seating position and have
the airbag system inspected by your Audi dealer.
Activating the convertible locking retractor
Use the convertible locking retractor to se­
cure a child restraint.
Always heed the child safety seat manufactur­
er's instructions when installing a child re­
straint in your vehicle. To activate the conver­
tible locking retractor:
"" Place the child restraint on a seat, prefera­
bly on the rear seat.
""Slowly pull the belt
all the way out.
""Route it around or through the child re­
straint belt path¢&_ .
"" Push the child safety seat down with your
full weight to get the safety belt really tight.
"" Insert the belt tongue into the buckle for
that seating position.
""Guide the safety belt back into the retractor
until the belt lies flat and snug on the child
safety seat.
""You should hear a "clicking" noise as the
belt winds back into the inertia reel. Test the
convertible locking retractor by pulling on
the belt. You should no longer be able to
pull the belt out of the retractor. The con­
vertible locking retractor is now activated.
"" Make sure that the red release button is fac ­
ing away from the child restraint so that it
can be unbuckled quickly .
""Pull on the belt to make sure the safety belt
is properly tight and fastened so that the seat cannot move forward or sideways more
than one inch (2.5 cm).
A WARNING ....__ -
Using the wrong child restraint or an im­
properly installed child restraint can cause
serious personal injury or death in a crash.
- Always make sure that the safety belt re- tractor is locked when installing a child
safety seat. An unlocked safety belt re­
tractor cannot hold the child safety seat
in place during normal driving or in a
crash.
- Always buckle the child safety seat firmly
in place even if a child is not sitting in it.
A loose child safety seat can fly around
during a sudden stop or in a crash.
- Always make sure the seat backrest to
which the child restraint is installed is in
an upright position and securely latched
into place and cannot fold forward. Oth­
erwise, the seatback with the child safety
seat attached to it could fly forward in
the event of an accident or other emer­
gency situation.
- Always read and heed all WARNINGS whenever using a child restrained in ave­
hicle is being used
¢ page 174. Special
precautions apply when installing a child
safety seat on the front passenger seat
¢ page 153, Child restraints on the front
seat -some important things to know.
Deactivating the convertible locking
retractor
The convertible locking retractor for child re­
straints will be deactivated automatically when the belt is wound all the way back into
the retractor.
"" Press the red button on the safety belt buck­
le. The belt tongue will pop out of the buck­
le.
""Guide the safety belt all the way back into
its stowed position .
Always let the safety belt retract completely
into its stowed position. The safety belt can
1J1-

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now be used as an ordinary safety belt with ­
out the convertible locking retractor for chi ld
restra ints.
I f the convertible locking retractor shou ld be
activated inadvertently, the safety belt must
be unfastened and guided completely back in­
to its stowed position to deactivate this fea ­
ture.
If the convertib le locking retractor is not
deactivated, the safety belt will gradually be­
come tighter and uncomfortable to wear .
A WARNING
Improperly installed child safety seats in­
crease the risk of ser ious personal injury
and death in a collision.
- Never unfasten the safety belt to deacti­
vate the convert ible lock ing ret ractor for
c hild restraints while the veh icle is mov­
ing. You would not be restrained and
cou ld be ser iously injured in an accident.
- Always read and heed all WARN INGS
whenever using a child rest rained in ave­
hicle is being used
¢ page 174. Special
precautions apply when installing a chi ld
safety seat on the front passenger seat
¢ page 153, Child restraints on the front
seat -some important things to know.
LATCH Lower
anchorages and tethers
for children
Child Restraint System anchors and how
are they related to child safety
To provide a s imp le r and more pract icable way
to attach the ch ild res traint on the veh icle
seat, Federa l regu lations require specia l lower
anchorages in vehicles and devices on new
chi ld restraints to attach to the vehicle ancho­
rages.
The combination of the tether anchorages and the lower anchorages is now generally called
the
LA TCH system fo r "L ower Anchorages and
T ethers for Children."
F orward- facing child restraints manufactured
after September 1, 1999, are required by U .S.
Child Sa fet y 187
federa l reg ulations to comply with new child
head movement performance req uirements.
These new performance req uirements make a
tether necessary on most new child seats.
Installing a ch ild restra int that requires a top
tethe r without one can seriously impair the
performance of the c hild restra int and its abil ­
ity to protect the child in a coll is ion. Insta lling
a child res traint tha t requires a top tether
without the top tether may be a violat ion of
state law.
Child restraint manufacturers offer LATCH
lower anchorages on their child seats w ith
hook -on or push-on connectors attached to
adjustable straps .
In add ition to the LATCH lower anchorages,
these child restraint systems usually require
the use of tether straps to he lp keep the ch ild
restraint firmly in place .
A WARNING
Improper installat ion of child restra ints
will increase the r isk of injury a nd death in
a cr ash.
- Always follow the instr uctions provided
by the manufa cture r of the child re­
s traint yo u intend to install in your vehi­
cle.
- Never inst all a child restraint withou t a
properly attached top tether strap if the
child restraint manufacturer's instruc ­
tions require the top tether strap to be
used.
- Improper use of child rest raint LATCH
lowe r ancho rage points can lead to injury
in a collision . The LATCH lower anchorage
points are designed to withstand on ly
those loads imposed by correctly fitted
child restraints .
- Never mount two child restra int systems
on one LATC H lower anchorage point.
- Never secure or attach any luggage or
other item to the LATCH lower anchorag-
-
es . Ill-
•
•

190 Child Safe ty
- Never mount more than one chi ld re­
straint to a single tether or to a lower an­
chorage point. Attaching two child re­
straints to a single anchorage point can cause the anchorage to fail and cause se­
rious personal inju ry in a crash.
(D Note
- Remove the guidance fixtures before
fold ing the rear seatback to prevent
damaging the seat cushion.
- To attach the child restraint secure ly, the
seat must be moved to the farthest rear pos ition, the seat height set to the low­
est posit ion and the head restra int must
be adjusted to the verti cal position
¢page 61.
-If you leave the guidance fixtures instal­
l ed for several days, they could leave a
mark on the upho lstery o n the sea t cush ­
i on and backrest in the a rea that the
guidance fixtures were insta lled . The up­
ho lstery would also be permanently
stretched around the guidance fixtures.
This applies especially to leather seats.
Installing a child restraint with LATCH
lower anchorages
Whenever you install a child restraint always
follow the child restraint manufacturer's in­
structions.
F ig. 1 85 Lower a nchorages: proper mounting
Mounting
"" Make su re the sea tback of the rear sea t
bench is in the upright position and sec urely
l atched in place. ""
Attach both hook -on connectors with the
spring catch release on the child safety seat
onto the LATCH lower anchorage so that the
connectors lock into place¢
fig. 185.
""Pull on the connector attachments to make
sure they are proper ly attached to the LATCH
lower anchorage .
"" Pull straps tight fo llow ing the child restraint
manufac turer's inst ruct ions .
Releasing
"" Loosen the tension on the straps following
the child restra int manufacturer's instruc ­
tions .
"" Dep ress the spring catches to release the
anchorage hooks from the lowe r anchorag­
es.
Remember: Use tether straps to help keep the
ch ild restra int fi rm ly in place.
.&_ WARNING
I mp roper use of the LATCH system c an in­
crease the risk of serious pe rsonal injury
and death in a n accident.
- These anchors were deve loped on ly for
child safety seats using the "LATCH" sys­
tem .
- Never at tach other ch ild safety sea ts,
be lts or other objects to these anchors.
- Always make sure that you hear a click
when latch ing the seat in place . If you do
not hear a click the seat is not sec ure and
could fly forward and hit the interior of
the vehicle, or be ejected from the vehi­
cle .
.&_ WARNING
-
Improper installat ion of child restra ints
will increase the r isk of injury i n an acci­
dent.
- Always follow the child restraint system
manufacturer's instruct ions for proper
i n stallation of the ch ild restra int system
and p roper use of teth er straps as well as
the lower anchorages or safety bel ts in
-
your veh icle. Ii-

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@ Tips
Your vehicle may be equipped with Audi
connect. Your use of certain Aud i connect
features req uires wireless serv ices that are
provided by a third party wireless telecom­
municat ions provider. For details regard­
ing how information obtained through
Aud i connect is collected, processed,
transmitted, used, and shared, please see
your contra ct w ith the wire less telecom ­
municat ions provider and the "About A udi
connect" tab in your vehicle's MMI:
!MENU !
button > Audi connect > About Audi con·
nect .
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 veh icle control. It works
only when the eng ine is running. ESC detects
certain difficult driv ing s ituations, including
when the vehicle is beginning to spin (yaw)
out of cont ro l and helps you to get the vehicle
back under control by select ively brak ing the
wheels, and/or red ucing engine powe r and
p roviding steering assistance to help hold the
ve hicle on the driver's intended course . The in­
dicator light
m in the instrument cluster
blinks when ESC is taking action to help you
control the vehicle.
ESC has limitations.
It is important to remem­
ber that ESC cannot overcome the laws of
phys ics. It will not a lways be able to help out
under all conditions you may come up against.
For example, ESC may not always be able to
h elp you master situat ions where there is a
sudden change in the coefficient of fr iction of
the road surface. When there is a sect io n of
d ry road that is s udden ly cove red with water,
slush o r snow, ESC canno t perform the same
way it would on the dry su rface.
If the vehicle
hydroplanes (rides on a c ush ion of wate r in­
stead of the road surface), ESC wi ll not be
ab le to he lp you steer the veh icle because con-
Int ellig ent technolog y 197
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered .
D uring fast corner ing, particular ly on wind ing
roads, ESC cannot always deal as effectively
with difficult dr iv ing s ituations 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 conditions . ESC can­
not override the vehicle's physical lim its, in­
crease the availab le tract ion, or keep a veh icle
o n the road if road departu re is a result of
driver ina ttent io n. Instead , ESC imp roves the
poss ibility of keep ing t he vehicle under con­
trol and on the road during extreme maneu­
vers by using the driver's steering i nputs to
help keep the vehicle go ing in the intended di­
rect ion. If you are traveling at a speed that
causes 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 braking system
(ABS), brake assist
system, anti -slip regulation (ASR), electronic
differential lock (EDL), dynam ic steer ing* and
selective wheel torque contro l. ESC is switch­
ed on all the time. In cer tain situations when
yo u need less traction, yo u can switch off ASR
by press ing the b utton above ~
page 199,
fig. 188 the se lector lever. Be sure to switch
ASR on again when you no longer need less
traction.
Anti -lock braking system (ABS )
ABS prevents the whee ls from loc king up
when b rak ing. The vehicle can st ill be stee red
even during hard braking . App ly steady pres­
su re to the brake peda l. Do not pump the ped­
al. A pulsing in the brake pedal indicates that
the system is helping you to brake the vehicle.
Brake assi st sy stem
T he brake ass ist system can dec rease braking
distance . It increases braking power when the
driver presses the brake peda l quickly in emer­
gency s ituations. You must press and hold the
brake pedal unti l the situation is over. In
I),
•
•

198 Intelligent technology
vehicles with adaptive cruise control*, the brake assist system is more sensitive if the
d istance detected to the vehicle ahead is too
smal l.
Anti-slip regulati on (ASR )
ASR reduces engine power when the d rive
wheels begin to spin and adapts the force to
the road conditions. This makes it easier to
start, accelerate and drive up hills.
Electronic diffe rential lock (EDL )
The EDL brakes wheels that are spinn ing and
transfers the drive power to the other d rive
wheel or whee ls if the vehicle is equipped with
all whee l drive*. This function is available up
to about 75 mph (120 km/h).
I n extreme cases, ED L automatica lly switches
off to help keep the brake on the braked whee l
from overheating . EDL wi ll switch on again au­
tomatically when conditions have returned to normal.
Dynamic steer ing*
On vehicles with dynamic steering, ESC he lps
stabilize the steering in certain situations .
Selective wheel torque control
The se lective wheel torque cont ro l operates
when dr iving thro ugh cu rves. The front wheel
on the ins ide of the curve or both w heels on
the inside of the curve are braked selective ly
as needed. This minimizes sliding in the front
wheels and a llows for more precise driving
through curves. The applicab le system may
not activate when driving in wet or snowy con­
d itions .
Post- coll isio n br ake assis t
"Post-collision brake assist" can assist the
driver during a collision by reducing the dan­
ger of slipp ing and further collision and by au­
tomatic braking.
"Post-collision brake assist" functions d uring
collisions when the a irbag contro l modu le de­
tects a trigger level and the collision takes place at a certa in driving speed. The brak ing
of the vehicle happens automatically via the ESC as
long as the ESC, the brake system, and
the vehicle electrical system are not damaged
from the collision.
T he following ac tivit ies override the au toma t­
ic braking during a co llision:
- I f the driver p resses the acce le rator pedal.
There is no automa tic brak ing .
- When the force on the press brake peda l is
st ronger tha n the braking force initiated by
t he system. The veh icle is manua lly braked.
- When the ESC is damaged, the "Post-colli­
sion brake assist" is not available.
,&. WARNING
- ESC, ABS, ASR, ED L, dynamic steeri ng *
and the select ive wheel torque control
cannot overcome the laws of physics .
This is especially important on s lippery
or wet roads. If the systems beg in acting
to stabilize your veh icle, you should im­
mediately change your speed to match
the road and traffic conditions. Do not let the increased safety provided by
these systems tempt you to take r is ks.
D oing so will increase the risk of a loss of
veh icle contro l, col lision and ser ious per ­
sonal injuries.
- Always ad apt your speed to road, traffi c
and weather conditions . The risk of los ­
ing contro 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, EDL, ASR, dynam ic steering* and
the selective wheel torque cont ro l can­
not prevent collisions.
- Always accelerate with special care on
even, smooth s urfaces such as those that
are wet or covered with i ce and snow.
The drive wheels can spin even w ith
these assistance systems tha t cannot al­
ways he lp to red uce the risk of loss of ve -
-
hicle control. IJJ,,