air condition AUDI S3 2009 User Guide

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Air d ir ected to the dri ver/ front passe nger[~]
All the air is directed to outlets @, G) and © in the instrument
panel. Air also is directed through the center console in the rear.
Air dir ected to th e footw ells ~
All the air is directed to outlets © and to the outlets under the front
seats .•
Air outlets
, _ ,
,~
---- 1
'
Fig . 10 9 Instr ume nt pan el: a ir out let loca tio ns a nd airfl ow direc tions
T he air out lets G) and 0 on top of t he instrument pane l are
fixed . Outlets 0 and 0 can be adjusted .
Adjusting air outlets 0 and 0
- Turn the vertical thumbwheel beside the outlet to
increase, reduce or shut down t he airflow from that
outle t. - Move t
he smal l tab in the center of the o utlet lo uver side ­
ways and up or dow n to ad just the level an d direc tion of
airflow.
The supply of air to the outlets is controlled either automatically or manually depending on the operation mode selected . The airflow
from al l outlets can be hea ted, unheated or cooled.
The heater out lets for the rear footwells are located under the front
seats. When you select outlets©, air is also directed to the rear
footwells.
[ i ] Tips
• When defrosting/defogging the windows, air flows from outlets
G), ® and G). To defrost or defog the windows as rapidly as
possible, air out lets
G) should be opened fully with the adjuster
whee ls.
• When the air conditioner is working, cooled air wi ll flow primarily
from outlets ®·
G) and ©-To assure adequate cooling, out lets G)
and © should never be completely closed. •
Using the climate controls economically
Using the climate controls prudently can help save fuel.
When you use the air conditioner, engine power is reduced
and fuel consumption increases. To save fuel, you should
use the a ir conditioner only when necessary . Also please
note the following points:
- If you want to save fuel, sw itch off the air conditioner.
- If you are going to drive w ith the wi ndows open, switc h
off the a ir condit io n er.
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<£> For the s ake of th e envir onm ent
By reducing the amount of fue l you use, you a lso reduce the amount
of pollutants emitted into the air. •
Key coded settings
When the ignition is switched on, the air conditioner
settings are automatically assigned to the key being used.
The air conditioner settings selected are automatically stored and
assigned to the key being used. When the vehicle is started, the air
conditioner automatical ly selects the settings assigned to that key .
This way every driver will maintain his/her own personal settings and does not have to reset them manually.
[ i ] Tip s
If a different driver uses your key and changes the air conditioner
sett ings, the latest adjustments wil l erase and replace the settings
you hav e stored. •
Rear vvindovv defogger QiP
The rear window defogger clears the rear window of
condensation.
Con tro ls and eq uip­
ment
F ig . 11 O Sw itch for
rear window defogge r
w ith air-co nditionin g
-Press the CiiP switch to switch the rear wind ow defogger
on a nd off.
The defogger works only with the engine runn ing. When the
defogger is switched on, an indicator light in the switch comes on .
The rear window defogger switches off automatically after about 20 minutes.
<£> For the sake of the environment
Turn the defogger off when the rear window is c lear . When you save
electricity, you save fuel. •
Applies to vehi cles : with elec trica lly heated fr ont se ats
Electrically heated front seats
With the ignition on, the seat cushion and backrest of the
fr ont seats can be heated.
Fig. 111 Cen ter
co nso le: th umbwhee ls
for fro nt seat heat ing
Use the thumbwhee ls in the center console~ fig . 111 to
turn on and adjust front seat heating. An infinite range of
positions are possible .
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Vehicle care I I irechnical data

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Important things to do before driving
Safety is everybody's job! Vehicle and occupant safety
always depends on the informed and careful driver.
For your safety and the safety of your passengers, before
driving always:
-Make sure that all lights and signals are operat ing
correctly.
- Make sure that the tire pressure is correct.
- Make sure that all windows are clean and afford good
visibility to the outside.
- Secure all luggage and other items carefully =>
page 94.
-Make sure that noth ing can interfere w ith the pedals.
- Adjust front seat, head restraint and mirrors correctly for your height .
- Instruct passengers to adjust the head restraints
according to their height.
- Make sure to use the right ch ild restraint correctly to
protect children =>
page 169, "Child Safety ".
- Sit properly in your seat and make sure that your passen ­
gers do the same=>
page 74, "General recommenda ­
tions".
- Fasten your safety belt and wear it p roperly. Also instruct
your passengers to fasten the ir safety belts properly
=>
page 137. •
Controls and equip­
ment Safety first
Vehicle operation
What impairs driving safety?
Safe driving is directly related to the condition of the
vehicle, the driver as well as the driver's ability to concen­
trate on the road without being distracted.
The driver is responsible for the safety of the vehicle and all
of its occupants. If your ability to drive is impaired, safety
risks for everybody in the vehicle increase and you also
become a hazard to everyone else on the road =>& .There ­
fore:
Do not let yourself be distracted by passengers or by
using a cellular telephone .
NEVER drive when your driving ability is impaired (by
medications, alcohol, drugs, etc.).
- Observe all traffic laws, rules of the road and speed limits
and plain common sense .
- ALWAYS adjust your speed to road, traffic and weather
conditions.
- Take frequent breaks on long trips. Do not drive for more
than two hours at a stretch.
- Do NOT drive when you are tired, under pressure or when
you are stressed .
& WARNING
Impaired driving safety increases the risk of serious personal
injury and death whenever a vehicle is being used. •
Vehicle care Do-it-yourself service Technical data

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Airbag system
Important things to know
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints. For airbags to
do their job, occupants must always properly wear their
safety belts and be in a proper seating position.
For your safety and the safety of your passengers, before
driving off, always:
- Adjust the driver's seat and steering wheel properly
=>
page 128,
-Adjust the front passenger's seat properly=> page 75,
-Wear safety belts properly=> page 140,
- Always properly use the proper child restraint to protect
children=>
page 169.
In a collision, airbags must inflate within the blink of an eye and with
considerable force . The supplemental airbags can cause injuries if
the driver or the front 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 all times.
By keeping room between your body and the steering wheel and the
front of the passenger compartment, the airbag can inflate fully and
completely and provide supplemental protection in certain frontal
collisions =>
page 128. For details on the operation of the seat
adjustment controls =>
page 76.
It's especially important that children are properly restrained
=>
page 169.
Controls and equip­ ment Safety first Vehicle operation
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 .
Proper seating position is important so that the front airbag on the
driver side can do its job. If you have a physical impairment or
condition that prevents you from sitting properly on the driver seat
with the safety belt properly fastened and reaching the pedals, or if
you have concerns with regard to the function or operation of the
Advanced Airbag System, please contact your authorized Audi dealer or other qualified workshop, or call Audi Customer CARE at 1-
800 -822 -2834 for possible modifications to your vehicle.
When the airbag system deploys, a gas generator will fill the
airbags, break open the padded covers, and inflate between the
steering wheel and the driver and between the instrument panel
and the front passenger. The airbags will deflate immediately after
deployment so that the front occupants can see through the wind ­
shield again without interruption .
All of this takes place in the blink of an eye, so fast that many people don't even realize that the airbags have deployed. The airbags also
inflate with a great deal of force and nothing should be in their way
when they deploy. Front airbags in combination with properly worn
safety belts slow down and limit the occupant's forward movement .
Together they help to prevent the driver and front seat passenger
from hitting parts of the inside of the vehicle while reducing the
forces acting on the occupant during the crash. In this way they help
to reduce the risk 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 airbags will not inflate in all frontal collisions. The trig­
gering of the airbag system depends on the vehicle deceleration
rate caused by the collision and registered by the electronic control
unit. If this rate is below the reference value programmed into the
control unit, the airbags will not be triggered, even though the car
may be badly damaged as a result of the collision. Vehicle damage,
9J),
Vehicle care Do-it-yourself service Technical data

-Airbag system ----------------
& W
ARN ING (continued )
• Airbag work most effectively when used with properly worn
safety belt s.
• Therefore , always wear your safety belts and make sure that
everybody in your vehicle is properly restra ined .
& WARNING
A person on the front passenger seat , espe cially infants and small
c hildren, 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 unde r these spe cial conditions is
impossible in all conce ivable 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 Standa rd if a child that
is heavier than the typical one -year old child is on the front
pas senger seat and the other cond itions 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 , espec ially 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
c ompl ia n ce wi th Un it ed Sta tes Federa l Motor Vehicle Safet y Sta n­
dard 208 as appl icab le at the time your vehicle was manufactured. T
he front Advanced Airbag System supplements the safety belts to
p rovide addit ional protecti on for the d river's a nd fro nt passenger's
heads and upper bodies in fronta l crashes . The ai rbags inflate only
in fron tal impac ts w hen the vehic le dece le ra tion is high en ough .
Th e fro nt Advanced A irbag System for t he fro nt seat occupa nts is
not a substitute for your safety belts . Rather, it is pa rt of the overall
occu pan t restra int system in your v ehicle. A lways remembe r that
the airbag system can only help to protect you, if you are sitting
uprigh t, weari ng you r sa fe ty bel t an d wea ring it proper ly . T hi s is w hy
you and your passengers must always be proper ly restrained, not
jus t beca use t he law requi res y ou t o be .
T he Advanced A irbag Syste m in your ve hicle has been cert ified to
meet the " lo w risk" requ irements fo r 3 an d 6 year -o ld chi ldren on the
passen ger side and ve ry small a dults on t he dr iver s ide. The low r isk
deployment criteria are intended to he lp reduce the risk of injury
th ro ugh in te ract io n with the front a irbag t hat ca n occur, fo r
example, by being too close to the steering wheel and instrument
p anel whe n the a irbag inflates.
I n addition, the syst em has been cert ified to comply with the
"su ppression" req uirem en ts of the Safe ty Standa rd, to turn off th e
fron t airbag for in fants 1 2 months o ld a nd youn ger who are
restrained on the front passenger seat in child restraints that are
li s ted in th e Stan dard=>
page 171 .
"Suppress ion" requires the front airbag on the passenger side to be
t urne d off if:
• a child up to about one year of a ge is restra in ed on the front
passenger seat in one of the rear -facing or forward -facing infant
re stra ints l is ted in Fed era l Motor V ehicle Safety Standard 208 w ith
whic h the Advanced Airbag System in your vehic le was ce rtified. For
a lis ting o f the child res traint s th at we re us ed to cer tify y our
vehic le 's compliance with the US Safety Standard =>
page 171,
• weight less t han a thr esho ld leve l sto red in th e contro l un it is
detected on the front passenger seat.
When a pers on is dete ct ed on th e fro nt pas senge r seat, weighi ng
more than the total weight of a ch ild that is about 1 year old ._

Airbag syst em -----------------=~-
restrained in one of the rear-facing or forward-facing infant
restraints (listed in Federa l Motor Vehicle Safety S tandard 208 with
which the Advanced Airbag System in your vehic le was certified),
the front airbag on the passenger side may or may not deploy .
The
PA SS ENGER AIR BAG OFF light comes on when the e lect ronic
control unit detects a total weight on the front passenger seat that
requires the front a irbag to be tu rned off . If the
PASSENGER AIR BAG
OF F
ligh t do es no t come on, the fron t airbag on th e passenger side
has not been turned of f by the contro l unit and can dep loy i f the
control unit senses an impact that meets the conditions stored in its
memo ry .
I f the total weight 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 dep loy (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 typ ical 1 year-old child is on
the front passenger sea t (regardless of whether the child is in one
of the child sa fety seats l isted :::::,
page 177) ,
• a child who has outgrown child res tra ints is on the front
passenger seat.
I f the front passenger airbag is turned off, the
PASSENGER AIR BAG
OFF
light in the center of the instrument panel wi ll come on and stay
on .
The front a irbag on the passenge r side may
not deploy (the
PAS SENG ER AIR BAG OFF light does not illuminate and stay lit) if:
• a small adult or teenager is on the front passenger seat
• a passenger who is not sitting upright with their back against a
non-reclined backrest with their feet on the vehicle floor in front of
the seat is on the front passenger seat.
I f the fron t pass enger airbag dep loys, the Federal Standard requires
t he air bag t o mee t the "low risk" deployment criteria to help reduce
the risk of injury through interaction with the airbag . "Low risk "
Controls and equip­
ment Safety first Vehicle operation
dep
loyment occurs in those crashes that take place at lower decel ­
erations as defi ned in the electronic con trol unit :::::,
page 158 .
Al wa ys remember :
Even though your vehicle is equipped with
Advanced Ai rbags, the safest place for chi ldren is properly
restra ine d on the back seat . Please be sure to read t he important
information in the sections that follow and be sure to heed a ll of the
WARNI NGS .
& WARNING
To reduce the risk of injury when an ai rbag inf lates , alway s wear
safety belts properly.
• If you a re unre strained , lean ing forward , sitt ing sideways or out
of position in any way , your risk of in jury is mu ch higher .
• You will also recei ve se riou s injur ies and cou ld even be killed if
you are up again st the airbag or too close to it when it inflates -
e ven with an Advan ced A irbag :::::,
page 14 7.
& WARNING
A child i n a re arward-fa cing child safety seat installed on the front
pa ssenger seat will be seriously injured and can be killed if the
fro nt airb ag infl ate s -ev en with an Ad vanced Airbag Sy stem .
• Although the Advan ced Airbag Sy stem in your vehicle is
designed to turn off the front a irb ag when a rearward-fa cing child
restraint ha s been in stalled on the front pa ssenger seat , nobody
ca n ab solutely guarantee that deployment is impo ssib le in all
c onceivable situations that may happen during the u seful life of
yo ur vehicle .
• The inflating airbag will hit the child safety seat or infant
c a rr ier with great for ce and will smash the child safety seat and
c hild again st the backre st, center arm rest , door, or roof .
• Always inst all rearward-fa cing child re strai nts in the back seat .
• If you mu st in stall a rearw ard facing child safety seat on the
front passenger seat be cause of e xceptional cir cumstances and
IIJ,,
Vehicle care Do-it-yourself service Technical data

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& WARN ING (continued )
• Never recline the front passenger' s seat to transport obje cts.
Item s can als o move into the area of the side airbag or the front
airbag during br aki ng or in a sudden maneuver . Objects near the
airbags can become projectiles and cause injury , particularly when
the seat is re clined .
& WARNING
The fine dust created when airbags deploy can cause breathing
problems for people with a histo ry of asthma or other breathing
c onditions.
• To reduce the ri sk of breathing p roblems , tho se with asthma or
other respiratory conditions should get fresh air right away by
getting out of the veh icle or opening windows or door s.
• If you are in a collision in which airbags deploy , wash your
hands and face w ith mild soap and water before eat ing.
• Be careful not to get the dust into your eyes, or into any cuts or
s crat ches .
• If the residue should get into your eyes , flush them with
water .•
Monitoring the Advanced Airbag
System
Airbag monitoring indicator light t:Ji
Two sepa ra te indi cator s mon itor t he function of the
Ad vanc ed A irba g Sy stem: th e ai rbag moni to rin g in dicator
ligh t and the
PASSENGER AIR BAG OFF light .
The Advanced Airbag System (including the electronic control unit,
sensor c ircuits and system w irin g) is mon itored continuously to
make su re that it is functioning proper ly whenever the ignition is on. E
ach time you turn on the ignition, the airbag monitoring indicator
li ght
I wi ll c om e on fo r a few sec onds (sel f diag nos tics).
The system must be inspected when the indicator light ~:
• does not come on when the ignition is switched on,
• does not go out a few seconds a fter you have switched on the
ignition, or
• comes on w hile driving.
I f an airbag system malfunction is detected, the indicator light will
fir st star t fl ashin g to catc h the drive r's at tention an d then stay o n
continuously to serve as a constant reminder to have the system
ins pec te d imm edi ately.
I f a malfunction occurs t hat turns the front airbag on the passenger
side off, the PASSENGER AIR BAG OFF light will come on and stay on
whenever the ignition is on.
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protection in a front al crash.
• If the a irbag indicator light comes on , it means that there may
be something wrong with the Advanced Airbag System. It is
possible that the airbag will inflate when it is not supposed to , or
will not inflate when it should.
• Have the airbag system inspected immediately by your autho ­
rized Audi dealer. •

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PASSENGER AIR BAG OFF light
I, Q
--
&I Ii u ,, , u
I I J' J
Fig. 1 46 Sectio n from
t h e ce nte r co nso le :
PA SS ENGER AIR B AG
OFF light
The PA SSENGER AIR BAG OFF light is located in the center console
=>fig.146 .
The
PA SSENGER AIR BAG OFF light wil l come on and stay on to te ll
you when the front Advanced Airbag on the passenger side has been turned off by the electron ic control unit. Each time you turn on
the ign it ion, the
PA SS ENGER AIR BA G OFF light will flash for a few
seconds and:
• will stay on if the front passenger seat is not occupied,
• will stay on if there is a small child or chi ld restraint on the front
passenge r seat,
• will go out if the front passenger seat is occupied by an adult as
registered by the we ight-sensing mat .
T he
PA SS ENGER AIR BAG OFF light mu st co me on and sta y on if the
ign ition is on and
• a car bed has been insta lled on the front seat, or
• a rearward -facing chi ld restraint has been installed on the front
passenger seat, or
• a forwa rd -facing child restra int has been installed on the front
passenger seat, or
• t he we ight registered on the front passenger seat is equa l to or
less than the combined weight of a typica l 1 year -old restrained in
Controls and equip­
ment Safety first
Vehicle operation
one of the rear-facing or forward -facing infant restraints listed in
Federa l Motor Veh icle Safe ty S tandard 208 with which the Advanced
Airbag System in your vehicle was certified.
I f the front passenger seat is not occupied, the front airbag will not
deploy, and the
PA SS ENGER AIR BAG OFF light will stay on . Never
insta ll a rearward -facing child restraint on the front passenger seat,
the sa fest place for a child in any kind of child restraint is at one of
the seating posi tions on the r ear seat =>
page 149, "Child restraints
on the front seat -so me important things to know" and=>
page 169,
"Chi ld Safety ".
If the PASSENGER AIR BAG OFF light com es on when one of the
conditions listed above is met, be sure to check the light regu lar ly
to make certa in that the
PA SS ENGER AIR BAG OFF light stays on
continuously whenever the ignition is on . If the
PA SSENGER AIR
BAG OFF
light does not appear on and does not stay on all the tim e,
stop as soon as it is safe to do so and
• reactivate the system by turning the ignition off and then turning
it on aga in;
• remove and reinstall the child restraint. Make sure that the child
restrain t is proper ly installed and t hat the safety be lt for the front
passenger seat has been correctly routed through the child restraint
as described in the chi ld restraint manufacturer's instructions;
• make sure that the convertible locking feature on the safety belt
for the front passenger sea t has been activated a nd that the safety
belt has been pulled tight . The belt must not be loose or have loops
of slack so that the sensor be low the safety belt latch on the sea t can
do its job =>
page 179.
• make sure that things that may inc rease the we ight of the child
and child safety seat are not being transported on the front
passenger seat;
• make sure that the safety belt tension sensor is not blocked.
Shake the safety belt latch on the front passenger seat back and
forth;
• I f a strap or te ther is being used to tie the child sa fety seat to the
front passenger seat , make sure that it is not so tight that it causes .,
Vehicle care Do-it-yourself service Technical data

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Intelligent technology
Notice about data recorded by
vehicle control modules
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders".
Some state laws restrict the retrieval or downloading of data stored
by EDR's that were insta lled in a vehicle for the express purpose of
retrieving data after an accident or crash event without the owner's
consent .
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, eng ine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehic le -related data
during norma l vehicle operation for diagnostic and repair purposes .
The recording capacity of the electronic cont rol modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit . Some
of the data then stored may relate to vehic le speed, direction,
braking as we ll as restraint system use and performance in the
event of a crash or other condition. Stored data can only be read and
downloaded with special equip men t.
Electronic Stabilization Program (ESP)
General
The Electronic Stabili ty Program increases driving
stability.
co ::,
_1, _ __ J"u. __ 11 ... _ ,.....u.,___,lli u.. _ .x,u _ _, r-u ~~ ~!' js:..~&c:',I
I
'
1 J
F ig . 16 3 Ce nte r
cons ole with E SP
sw itch
With ESP, control over the veh ic le is increased in situations when
the vehicle is close to the limits of grip, such as during acce leration
and in curves. ESP reduces the risk of skidding a nd improves vehicle
stability under all road conditions . It operates at all speeds .
The Anti-Lock Brake System (ABS), E lec tronic Differentia l Lock (EDS)
and Anti-Slip Regulation System (ASR) are integrated in the Elec­
tronic Stability Program .
How ESP work s
The ESP control unit processes the fo llowing data from high-sensi ­
tive sensors : the rotational speed of the vehicle about its vertica l
axis, fore -and -aft and lateral acceleration forces, brake pressure and
steering angle.
Using steering ang le and vehicle speed, the direction the driver
wishes to travel is determined and continuously compared with
t,.

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
Low brake fluid level
Ma lfu ncti ons can occ ur in th e brake system if the bra ke flu id leve l is
too low. The brake fluid leve l is monitored e lectronically.
Brake lining wear status Bra ke lining wear may be checked by visual inspection of the condi ­
t ion of the brake pa ds through the o pen in g s in t he wheel. If neces ­
sary, the wheel may be removed for this inspection=>
page 272 ,
"Whee l change".
& WARNING
• You should perform braking maneuver s for the purpose of
cleaning the brake system only if road cond itions permit . Other
road u sers must not be put at risk -you may cause an accident !
• Before des cending a steep grade , reduce speed and shift trans ­
mission into a lower gear or lower driving range. Do not ride the
brake s or hold the pedal down too long or too often . This could
c ause the brakes to get hot and diminish braking efficiency.
• Do not "ride the brakes " by resting your foot on the pedal when
you do not intend to brake. This may cause the brakes to overheat, p rem ature wear and in creased stopping distance .
• Under certain climatic and operating conditions such as
passing through water , driv ing in heavy rain or after washing the
vehicle , the effectiveness of the brakes can be reduced. In winter ,
ice can accumulate on the brake pads , linings , discs and drums.
Carefully apply brakes for a test. Brakes will dry and ice coatings
will be cleaned off afte r a few careful b rake appli cations .
• Driving for an extended period of time on salt -covered roads
without using your brakes can also affe ct braking effic ien cy. Clean
off accumulated salt coating from brake discs and pads with a few
careful brake applications .
• If you damage the front spoiler , or if you install a different
spoiler , be sure the air flow to the front brakes is not obstru cted .
Otherwise the brake system could overheat reducing the effe ctive­
ness of the entire brake system .
& WARNING (continued )
• Failure of one brake circuit will impair the braking capability
resulting in an increased stopping distance . Avoid driv ing the
vehicle and have it towed to the nearest authorized Audi dealer or
qu alified workshop. •
Brake booster
The bra ke boos ter adds e xtra bra king pow er.
Th e brake boost er wo rks wit h vacuum p ressu re wh ich is created
only when the engine is running=>& .
& WARNING
• Never let the vehicle roll to a stop with the engine shut off.
• If the brake booster is not working , for e xample when towing
your vehicle, or because the brake booster has somehow been damaged , the brake pedal must be pressed considerably harder to
make up for the lack of booster assistance . •
Functioning of Anti-Lock Brake System (ABS}
A BS p revents t he wheels from lockin g up unde r braking.
The ABS co ntrib utes effectively to ve hic le c ont ro l since it preven ts
the whee ls from
locking when the bra kes are app lied. Th is means
that the vehicle remains stee rable and is less l ikely to skid .
With ABS you do not need to
pump the brake. Just hold the brake
pedal down .
Ho wever , do not e xpect that t he ABS shor tens brak ing distance
under
all circumstances . When driv ing on gravel or on newly fa llen
snow on top of icy surfaces, b raki ng d istance may be even longer,
th ere for e, u nder these circumstances, it is esp ecially important t hat
you drive s lowly and w ith g reat ca re . ._