steering wheel AUDI S8 2008 Owner's Manual

Because the passengers of this vehicle are not using safety belts
=> page 210, fig. 220, they will keep moving at the same speed the
vehicle was moving just before the crash, un til some thing stops
them
-here, the wall ~ page 210, fig. 221.
The same principles apply to people sitting in a vehicle that is involved in a frontal collision. Even at city speeds of 20 to 30 mph
(30 to 50 km/h), the forces acting on the body can reach one ton
(2,000 lbs, or 1,000 kg) or more . A t grea ter spe eds, these forc es are
even higher.
People who do not use safety bel ts are also no t attached to their
vehicle. In a frontal collision they will also keep moving forward at
the speed their vehicle was travelling just before the crash. Of course, the laws of physics don't just apply to frontal collisions, they
determine what happens in all kinds of accidents and collisions. •
What happens to occupants not wearing
safety belts?
In crashes unbelted occupants cannot stop themselves
from flying forward and being injured or killed. Always
wear your safety belts!
Fig . 222 A driver not
wearing a safety belt is
violently thrown
forward
Safety belts
Fig . 223 A rear
passenger not wearing
a safety belt will fly
forward and strike the
driver
Unbelted occupants are no t able to resist the tremendous forces of
impact by holding tight or bracing themselves. Without the benefit
of safety restraint systems, the unrestrained occupant will slam
violently into the steering wheel, instrument panel, windshield, or
whatever else is in the
way~ fig. 222 . This impact with the vehicle
interior has all th e energy th ey had just before the crash.
Never rely on airbags alone for protection. Even when they deploy,
airbags provide only additional protection. Airbags are not
supposed to deploy in all kinds of accidents. Although your Audi is
equipped with airbags , all vehicle occupants, including the driver,
must wear safety belts correctly in order to minimize the risk of
severe injury or death in a crash .
Remember too , that airbags will deploy only once and that your
safety belts are always there to offer protection in those accidents
in which airbags are not suppos ed to deploy or wh en they have
already deployed. Unbelted occupants can also be thrown out of the
vehicle where even more severe or fatal injuries can occur .
It is also important for the rear passengers to wear safety belts
correctly . Unbelted passengers in the rear seats endanger not only
themselves but also the dr iver and other
passengers => fig. 223. In a
frontal collision they will be thrown forward violently, where they can hit and injure the driver and/or front seat passenger. •
Vehicle care I I Technical data

___ A_ ir_b _ a_ g=- s-a. y_s _t _e _m _________________________________________________ _
Airbag system
Important things to know
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints. For airbags to
do their jo b, occu pants must always properly we ar their
safety belts and be in a proper seating position.
Fo r your safe ty a nd the safety o f your passen gers, before
dr iving o ff, a lways:
- Adjust the driver 's seat and steering wheel proper ly
=> page 200,
- Adjust the front passenger's seat properly=> page 87,
-Wear safety be lts proper ly=> page 212,
- Always properly use the proper chi ld restrain t to pro tect
ch ildren
=> page 243 .
In a collision airbags mus t inflate with in t he blink of an eye and with
considerable force . The supplemental airbags can cause injuries if
t he driver or the fron t seat passenger is not seated properly. There ­
fore in order to help the airbag to do its job, it is important, both as a driver and as a passenger to sit properly at a ll ti mes.
By keep ing room between your body and t he steer ing wheel and the
front of the passenger compartment, the airbag can inflate fu lly and
comp letely and prov ide supplementa l protection in certain frontal
collisions => page 200, "Proper occupant seating positions". For
deta ils on the operation of t he seat adjustment
controls => page 87.
It's especia lly important that chi ldren are proper ly restrained
=> page 243 .
There is a lot that the driver and the passengers can and must do to
help the individual safety features installed in your Audi work
together as a system.
P roper seating position is important so that the front airbag on the
driver side ca n do its job. I f yo u have a physical impairment or
condition that prevents you from sitting properly on the driver seat
wi th the safety belt p roperly fastened and reaching the pedals, o r if
you have concerns with regard to the function or operation of the
Advanced Airbag System, p lease contact your authorized Audi
dea ler or qua lif ied workshop, or call Audi Customer CAR E at 1 -800-
822 -2834 for possib le modifications to your vehicle .
When the a irbag system deploys, a gas generator wi ll fil l the
airbags, break open the padded covers, and inflate between the
steer ing wheel and the dr iver and between the inst rume nt panel
and the front passenger. The airbags wi ll deflate immediate ly after
deployment so that the front occupants can see through the wind ­
shield again without interruption .
A ll of this takes p lace in the b link of an eye, so fast that many people
do n't even rea lize that the a irbags have dep loyed . T he airbags also
inflate with a great dea l of force and nothing should be in their way
when they dep loy. Fron t airbags in combinati on wi th properly worn
safety belts slow down and limit the occupant's forward movement.
Together t hey help to prevent the driver and front seat passenger
from hitting parts of the inside the vehicle while reducing the forces act ing on the occupant during the crash . In this way they he lp to
reduce the r isk of injury to the head and upper body in the crash .
Airbags do not protect the arms or the lower parts of the body .
Both front a irbags w ill not in flate i n all fro ntal col lis io ns. The trig­
gering of the airbag system depends on the vehic le dece lerat ion
r ate caused by the co llision and registe red by the electr onic c ontro l
unit . If this rate is be low the reference value programmed into the
co ntrol unit, the ai rbags w il l not be t riggered, even tho ug h the car
may be bad ly damaged as a result of the collision . Vehicle damage,
~

__________________________________________________ A_ i_ r _b _a-' g=- s_ y=- s_t _e _m __ lfflll
r ep air costs or ev e n the lac k of veh icle dama ge is not necessari ly an
indicati on of w heth e r an air b ag s houl d infla te or not .
I t is not poss ib le to def in e a ran ge of v ehicle sp ee ds t hat w il l cover
eve ry po ssible kind and ang le of impact that wil l a lway s trigger the
a ir b ags , s in ce t he cir cum stanc es w ill vary c onsid era bly be tw een
one co llision and another . Important factors inc lude , for example,
th e nat ure ( hard or soft) of the o bject w hic h the car h its, the a ng le
of impact, ve hicle speed, etc. The front airbags wi ll also not inflate
in side or rea r co lli s io ns, or i n ro ll-ov ers .
Always remember : Airbags w ill d eploy only onc e, an d on ly in c ertain
k inds of coll isi ons. Your s afe ty b elt s a re a lway s the re to o ffer prot ec­
t ion in th ose s ituat io ns in whi ch airba gs are not su pposed to deplo y,
or whe n th ey hav e a lready dep lo yed; for ex am ple, wh en your v ehi cle
s tr ik es or i s struc k by another a ft e r th e fir st c ollis ion .
T his is just one of the reasons why a n airbag is a su pple mentary
r es traint and is not a sub stitut e for a sa fe ty b elt. T he ai rbag s ystem
w ork s most eff ect ively wh en us ed w ith the saf ety be lts . T herefore,
alw ay s pr operly w ea r y ou r safe ty b e lts ~ page 2 09.
& WARNING
Sitting too close to the steering wheel or instrument panel will
decrease the effectiveness of the airbags and will increase the risk
of 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 (25 cm ) from the steering
wheel , investigate whether adaptive equipment may be available
to held you reach the pedals and increase your seating distance
from the steering wheel.
• If you are unrestrained , leaning forward, sitting 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.
Controls and equip­ ment Safety first
Vehicle operation
&, WARNING (continued )
• To reduce the risk of injury when an airbag inflates, always
wear safety belts
properly ~ page 213, "Safety belts ".
• Always make certain that children age 12 or younger always
ride in the rear seat . If children are not properly restrained , they
may be severely injured or killed when an airbag inflates.
• Never let children ride unrestrained or improperly restrained in
the vehicle . Adjust the front seats properly .
• Never ride with the backrest reclined .
• Always sit as far as possible from the steering wheel or the
instrument panel
~ page 200.
• Always sit upright with your back against the backrest of your
seat.
• Never place your feet on the instrument panel or on the seat .
Always keep both feet on the floor in front of the seat to help prevent serious injuries to the legs and hips if the airbag inflates .
• Never recline the front passenger's seat to transport objects.
Items can also move into the area of the side airbag or the front
airbag during braking or in a sudden maneuver. Objects near the
airbags can become projectiles and cause injury when an airbag
inflates .
& WARNING
Airbags that have deployed in a crash must be replaced.
• Use only original equipment airbags approved by Audi and
installed by a trained technician who has the necessary tools and
diagnostic equipment to properly repla ce any airbag in your
vehicle and assure system effectiveness in a crash .
• Never permit salvaged or recy cled airbags to be installed in
your vehicle. •
Vehicle care Do-it-yourself service Technical data

Airbag system -
--------------=---=--
& WARNING (continued)
• Airbag work most effectively when used with properly worn
safety belts.
• Therefore, always wear your safety belts and make sure that
everybody in your vehicle is properly restrained.
& WARNING
A person on the front passenger seat, especially infants and small
children, will receive serious injuries and can even be killed by
being too close to the airbag when it inflates.
• Although the Advanced Airbag System in your vehicle is
designed to turn off the front passenger airbag if an infant or a
small child is on the front passenger seat, nobody can absolutely
guarantee that deployment under 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 under the U.S. Federal Standard if a child that
is heavier than the typical one-year old child is on the front
passenger seat and the other conditions for airbag deployment
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 Stan ­
dard 208 as applicable at the time your vehicle was manufactured.
Controls and equip­ ment Safety first Vehicle operation
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 inflate only
in frontal impacts when the vehicle deceleration 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 restraint system in your vehicle. Always remember that
the airbag system can only help to protect you, if you are sitting
upright, wearing your safety belt and wearing it properly. This is why
you and your passengers must always be properly restrained, not
just because the law requires you to be.
The Advanced Airbag System in your vehicle has been certified to
meet the "low risk" requirements for 3 and 6 year -old children on the
passenger side and very small adults on the driver side. The low risk
deployment criteria are intended to help reduce the risk of injury
through interaction 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 restraints that are
listed in the
Standard=> page 245, "Child restraints and Advanced
Airbags".
"Suppression" 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
vehicle's compliance with the US Safety
Standard => page 245,
• weight less than a threshold level stored in the control unit is
detected on the front passenger seat.
~
Vehicle care Do-it-yourself service Technical data

Airbag system -
--------------=---=--
& WARNING (continued)
• If you must install a rearward facing child seat on the front
passenger seat because of exceptional circumstances and the
PASSENGER AIR BAG OFF light does not come on and stay on,
immediately install the rear-facing child seat in a rear seating posi­
tion and have the airbag system inspected by your Audi dealer.
& WARNING
If, in exceptional circumstances, you must install a forward-facing
child restraint on the front passenger's seat:
• Always make sure the forward-facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag.
• Never put the forward-facing child restraint up against or very
near the instrument panel.
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range, as far away from the
airbag as possible, before installing the forward-facing child
restraint. The backrest must be adjusted to an upright position.
• Make sure that the PASSENGER AIR BAG OFF light comes on
and stays on all the time whenever the ignition is switched on. •
Advanced Airbag System components
The front passenger seat in your vehicle has a lot of very important
parts of the Advanced Airbag System in it. These parts include the
weight -sensing mat, sensors, wiring, brackets, and more. The func ­
tion of the system in the front passenger seat is checked by the elec­
tronic control unit when the ignition is on. The control unit monitors
the Advanced Airbag System and turns the airbag indicator light on
when a malfunction in the system components is detected. The
function of the airbag indicator light is described in greater detail below . Because the front passenger seat contains important parts
Controls and equip­
ment Safety first Vehicle operation
of the Advanced Airbag System, you must
take care to prevent it
from being damaged. Damage to the seat may prevent the
Advanced Airbag for the front passenger seat from doing its job in
a crash.
The front Advanced Airbag System consists of the
following:
• Crash sensors in the front of the vehicle that measure vehicle
acceleration/deceleration to provide information to the Advanced
Airbag System about the severity of the crash.
• An electronic control unit, with integrated crash sensors for front
and side impacts. The control unit "decides" whether to fire the
front airbags based on the information received from the crash
sensors. The control unit also "decides" whether the safety belt
pretensioners should be activated.
• An Advanced Airbag with gas generator for the driver inside the
steering wheel hub.
• An Advanced Airbag with gas generator inside the instrument
panel for the front passenger.
• A weight -sensing mat under the upholstery padding of the front
passenger seat cushion that measures the total weight on the seat.
The information registered is sent continuously to the electronic
control unit to regulate deployment of the front Advanced Airbag on
the passenger side .
• An airbag monitoring system and indicator light in the instru­
ment
cluster => page 229.
• The PASSENGER AIR BAG OFF light comes on and stays on in the
center of the instrument
panel => page 230, fig. 233 and tells you
when the front Advanced Airbag on the passenger side has been
turned off .
• A sensor below the safety belt latch for the front seat passenger
to measure the tension on the safety belt . The tension on the safety
belt and the weight registered by the weight-sensing mat help the
control unit
"decide" whether the front airbag for the front
passenger seat should be turned off or
not=> page 220, "Child
restraints on the front seat
-some important things to know". .,_
Vehicle care Do-it-yourself service Technical data

__ ....!:,A~i'.!. r !::b :!a ~g:L.: s~ y~ s:!: t::.:: e~ m'..!.!.. ______________________________________________ _
or the low er parts of the body . Front airbags only supplement th e
th re e po int safe ty b elts in som e front al c ollis ions in which the
vehic le dece lerat ion is h igh enou gh to deploy the a irba gs.
Front airbags will not deploy:
• if the ignition is switched off when a crash occurs,
• i n sid e coll is io ns,
• in r ear- e nd collisi ons ,
• in ro llovers,
• when th e cras h de cele ration meas ured b y th e a irba g sys tem is
less than the mini mum threshold needed for a irbag deployme nt as
r egi stere d by th e ele ctr on ic con trol uni t.
The front passenger airbag will also not deploy :
• when th e front p asseng er seat is not occ upi ed ,
• when the weight on the front pas senge r seat a s sensed by the
A dvance d Airb ag Syste m indicates t hat th e fr on t airb ag on the
passenger side has to be t urned off b y the e lectronic control unit
(the PASSENGER AIR BAG OFF li g ht come s on and s tays o nl.
& WARNING
Sitting in the wrong position can increase the risk of serious injury
in crashes .
• To reduce the risk of injury when the airbags inflate , the driver
and passengers must always sit in an upright position , must not
lean against or place any part of their body too close to the area
where the airbags are located.
• Oc cupants who are unbelted , out of position or too close to the
airbag can be seriously injured by an airbag as it unfolds with
great force in the blink of an eye
=> page 220.
& WARNING
A child in a rearward -facing child seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates - even with an Advanced Airbag System .
• The inflating airbag will hit the child seat or infant carrier with
great force and will smash the child seat and child against the
backrest , center arm rest , door or roof .
• Always install rear-facing child seats on the rear seat.
• If you must install a rearward facing child seat on the front
passenger seat because of exceptional circumstances and the
PASSENGER AIR BAG OFF light does not come on and stay on ,
immediately install the rear-facing child seat in a rear seating posi­
tion and have the airbag system inspected by your Audi dealer.
& WARNING
Objects between you and the a irbag will increase the risk of injury
in a crash by interfering with the way the airbag unfolds or by
being pushed into you as the airbag inflates.
• Never hold things 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 during
braking or other sudden maneuver and become dangerous projec­
tiles that can cause serious personal injury if the airbags inflate.
• Never place or attach accessories or other objects (such as cup
holders, telephone brackets, large , heavy or bulky objects) on the
doors , over or near the area marked
"AIRBAG " on the steering
wheel , instrument panel , seat backrests or between those areas
and yourself . These objects could cause injury in a crash, espe­
cially 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
airbag during braking or in a sudden maneuver. Objects near the .,_

__ .....;.A..;.;.;. ir.;;b ;..; a;;;;. g=... s;;;.!. y.;;s ..;;t ..;;e ;.;.m.;..;... ________________________________________________ _
&, W ARNING (continued )
• A tight tether or other strap on a rearward-facing child restraint
attached to the front passenger seat can put too much pres sure
on the weight-sensing mat in the seat and reg ister more weight
than is actually on the seat. The heavier weight registered can
make the system work as 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 .
• If, in exceptional circumstances, you must install a forward ­
facing child restraint on the front passenger seat , always move the
seat into its rearmost position in the seat's fore and aft adjust­
ment range , as far away from the a irbag as possible. The backrest
must be adjusted to an upright position. Make sure that the
PASSENGER AIR BAG OFF light comes on and stays on all the time
whenever the ignition is switched on .
& WARNING
• If the PASSENGER AIR BAG OFF light does not go out when an
adult is sitting on the front passenger seat after tak ing the steps
described above, make sure the adult i s properly seated and
restrained at one of the rear seating positions .
• Have the airbag system inspected by your Audi dealer before
transporting anyone on the front passenger seat .
[ i] Tips
If the we ight -sens ing mat in the front passenger seat detects an
e mp ty s eat, th e front air bag o n the pass enge r sid e wil l be tur ned
off, and PASSENGER AIR BAG OFF will stay on.•
Repair, care and disposal of the airbags
Parts of the airbag system are insta lled at many different places o n
yo ur Au di. In stal li n g, r emo vin g, s ervic ing or rep airi ng a part i n an area of the vehicle can damage a part of an airbag system and
p re vent that sys tem from wor king pr operly in a c ollis ion.
Th ere are some important th ings you hav e to know to ma ke sure
that t he effectivenes s of the system will not be impai red and that
discar ded co mponents do not ca use injury o r po llut e the enviro n­
ment .
& WARNING
Improper care , servicing and repair procedures can increase the
risk of personal injury and death by preventing an airbag from
deploying when needed or deploying an airbag unexpectedly:
• Never cover , obstruct , or change the steering wheel horn pad
or airbag cover or the instrument panel or modify them in any way .
• Never atta ch any objects su ch as cup holders or telephone
mountings to the surfaces covering the airbag units .
• For cleaning the horn pad or instrument panel, use only a soft,
dry cloth or one moistened with plain water. Solvents or cleaners
could damage the airbag cover or change the stiffness or strength
of the material so that the airbag cannot deploy and protect prop­
erly .
• Never repair , adjust, or change any parts of the airbag system .
• All work on the steering wheel, instrument panel , front seats or
electrical system (including the installation of audio equipment ,
cellular telephones and CB radios , etc .I must be performed by a
qualified technician who has the training and special equipment
necessary .
• For any work on the airbag system, we strongly recommend
that you see your authorized Audi dealer or qualified workshop .
• Never modify the front bumper or parts of the vehicle body .
• Always make sure that the side airbag can inflate without inter-
ference :
~

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If the front airbags deploy, the knee airbags also dep loy in frontal
c oll is ions above a ce rtain sever ity.
When the system is deployed, the airbags start to fi ll with a prope l­
lant gas, and inflate between the lower part of the inst rument pane l
and t he dr iver a nd t he lowe r part o f th e instrument pane l and t he
front
passenge r=> page 227 , fig. 232 .
Al tho ug h t hey a re not a soft p illow, t hey ca n "cushion" th e im pact
and in th is way they can he lp to r educe th e ris k of injury to the lower
e xtr em it ie s.
A ll thi s takes place insta nta ne ous ly, so fast t hat m any peop le do n't
even rea lize that t he ai rbags have deployed. The ai rbags a ls o inflate
wi th a gre at de al o f fo rc e an d it is impo rta nt for occu pant safet y th at
not hing s hou ld be in t heir wa y when they dep lo y.
Fu lly in flate d ai rb ags in co mbin ati on w ith p ro perly w orn s afety b elt s
s low down and limit the occupant's for ward mov eme nt and he lp to
r e duc e th e risk .•
Important safety instructions on the knee
airbag system
A irbags a re only s uppl emen tal rest raints. A lway s w ear
safety belts co rrectly and rid e in a p rope r seat ing po sition .
There i s a lo t th at you and yo ur pass eng ers m ust kno w and do t o
he lp th e safet y be lts and ai rbags to p rovide supp lemental protec­
ti on.
& WARNING
An inflating knee airbag can cause serious injury. Wearing safety
belts incorrectly and improper seating positions increase the risk
of serious personal injury and death whenever a vehicle is being
used .
• The airbag system cannot protect you properly if you are
seated too close to any of the airbag locations . When adjusting
& WARNING (continued)
their seat positions, it is important that both the driver and the
front passenger keep their upper bodies and knees at the
following minimum safe distances :
- 1
O inches (25 cm) between the chest and the steering
wheel/instrument panel .
- 4 inches (10 cm) between the knees and the lower part of the instrument 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
wearing your safety belt . The risk increases even more should the
airbag deploy .
• Always make sure that the knee airbag can inflate without
interference . Objects between yourself and the airbag can
increase the risk of injury in an accident by interfering with the
way the airbag deploys or by being pushed into you as the airbag
deploys.
- No persons (children) or animals should ride in the footwell
in front of the passenger seat . If the airbag deploys, this can
result in serious or fatal injuries .
- No objects of any kind should be carried in the footwell area
in front of the driver's or passenger's seat. Bulky objects (shop­
ping bags , for example) can hamper or prevent proper deploy­
ment of the airbag . 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 scratches or other damage
in the area of the instrument panel where the knee airbags are
located.
• If children are incorrectly seated , their risk of injury increases in
the case of an accident
=> page 243 , "Child Safety". •

11111 Child Safety
------!....------------------------------
&, W ARNING (continued )
• Alway s inst all rear-facing child safety seats on the rear seat .
• If you mu st in sta ll a rear ward f acing child safet y seat on the
front pa ssenger seat in exceptional circum stan ces and the
PASSENGER AIR BAG OFF light doe s not come on and stay on,
immediately inst all the rear-facing child safety seat in a rear
s eating po sition and ha ve the airbag sy stem inspe cted immedi ­
atel y by your Audi de aler .
& WARNING
If, in exceptional circumstance s, you mu st in stall a forward -facing
c hild re straint o n the fr ont p assenger 's seat:
• Alway s make sure the forward -fa cing s eat ha s been de signed
a nd cert ified by it s m anufa cturer for use on a front seat w ith a
pa ssenger front and side airbag.
• Always follow the manufacturer's instruct ions provided with
the child safety seat or carrier.
• Alway s move the pa ssenger seat into it s re armost position in
the seat' s fore and aft adju stment range , as far aw ay from the
ai rbag as possibl e befo re installing the ch ild restr aint . The ba ck­
rest mu st be adjusted to an upright po sition.
• Alway s m ake sure that the PASSENGER AIR BAG OFF l ight
c ome s on and stays on all the time whenever the ignition is
sw it c hed on . •
Advanced front airbag system and children
Your vehicle is equipped with an "Advanced Airbag System" in
compl iance with U nited States Federa l Motor Vehicle Safety Stan­
dard { FMVSSl 208 as applicable at the time your vehicle was manu ­
factured. T
he Advanced Airbag system in your vehicle has been certified to
meet the " low -risk" requirements for 3 and 6 year -old chi ldre n on
the passenger side and smal l 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 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 up to 12 months who are restra ined on
the front passenger seat in child restraints that are listed in the
Standard.
Even though your vehic le is equipped with an Advanced Airbag
system, al l ch ildren, especially those 12 years and you nger, should
a lways ride in the back seat properly restrained for their age and
size . The airbag on the passenger side makes the front seat a poten­
tia lly dangerous p lace for a ch ild to ride. The front seat is not the
safest p lace for a child in a forward -facing child safety seat . It can be
a very dangerous p lace for an infant or a larger ch ild in a rearward ­
facing seat. •
Advanced Airbags and the weight-sensing
mat in the front seat
The Advanced Airbag Sys tem in your vehicle detects the presence
of an infant or child in a chi ld restra int on the front passenger seat
using the weight -sensing mat in the seat cushion and the sensor
below the safety belt latch on the front passenger seat that measures the tension on the safety belt.
T he weigh t-sensing mat measures total weight o f the chi ld and the
child safety seat and a child blanket on the front passenger seat . T he
weig ht o n the fr ont passenger seat is rela ted to the desig n of the
chi ld restraint and its "footprint", the size and shape of the bottom
of the child restraint as it sits on the seat . The weight of a child
restraint and its "footprint" vary for different kinds of child
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T he direction in which the driver wishes to travel is determined with
t he aid of the steering angle and vehicle speed and is con tinua lly
compared with the actual behavior of the vehicle. If the two do not
match, for example, when the vehic le starts hydrop laning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the prob lem.
The vehicle is then stabi lized by the forces act ing on the whee l
during braking. If the vehicle is
oversteering (rear tends to skid out
of the turn), the brakes are mainly app lied on the whee l that is on
the outside of the curve. In the case of a vehicle that is
understeering
(tendency to s lide out of the curve), t he brakes are applied a t the
rear wheel that is on the inside of the curve. An acoustic signal indi ­
cates when ESP brake app lication cuts in
=> & .
The system operates across t he entire speed range in comb inat ion
with the ABS system
=> page 272 . If the Anti -Lock Brake System
(ABS) malfunctions, the ESP wi ll be out of act ion as well.
Ac tivation
When you turn on the eng ine, ESP will automatically be activated
and wil l perform a self -test.
The system can be activated or deactivated by pressing the but ton
=> page 268, fig. 254 . The warning light comes on when the system
is switched off
=> page 18.
Normally, the ESP s hould always be on, however, it may be advanta­
geous to turn off the system in certain special cases when some
degree of wheel spin is des ired such as:
• when driving with snow chains
• whe n driving in deep snow or on a loose surface (to allow the
whee ls to dig in to reach firm ground)
• whe n trying to
"rock" the vehicle free whe n it has become stuck.
T he system should be reactivated once you are no longer in such
situations .
Both the ABS and EDS systems are still functioning even if the ESP
is switched off .
Controls and equip­
ment Safety first Vehicle operation
& WARNING
The Ele
ctron ic Stabiliz ation Pr ogram i s ne verthele ss subje ct to the
laws of phy sic s. It is p articularl y important to pay attention to this
fa ct on wet and slipper y ro ad s. It i s therefore important th at you
alway s adapt your dr iving to the condit ion of the road and traffic
c ondition s. Do not allo w the in crea sed safety pro vided by the Ele c­
tronic Stabilization Program system to lull you into a ccepting
a ddition al safety ri sk s.
•
Electronic differential lock (EDL)
The elec tronic d ifferen tial lock moni tors the rotation al
s p eed of the drive wheels.
G en era l not es
The elect ronic d ifferential lock (EDU helps the ca r to start mov ing,
accelerate and c limb a grad ient on surfaces providing poor or
a lmost no grip . Without EDL, this would be difficult, if not impos ­
s ib le.
How the syst em works
The EDL operates automatical ly. It monitors the rotationa l speed of
t he drive wheels on an ax le with the he lp of the ABS senso rs
=> page 272. If a not iceable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground
on
one side),
the spinning w heel is bra ked, thereby transferring power
to the other drive wheel or wheels (a ll -whee l drive) . This is done up
t o a speed of ab out 60 mph (100 km/h). N oises from the brake
system signal that wheel spin is being control led .
Dri ving off
When driving off, always be sure to keep road conditions in mind as
you accelerate. I f one drive wheel spins because it is on a sur face
with less grip, gradual ly increase the pressure on the accelerator
pedal unt il the car star ts to move . The whee l less able to t ra nsfer
power spins.
.,,
Vehicle care Do-it-yourself service Technical data