warning PORSCHE 911 GT3 2004 5.G Owner's Manual

Parkingbrakewarning lightUSA
Parking brakewarning light
Canada

The warning lightsinthe instrument panelandon-
board computer willgoout after theparking brake
is fully released.
The warning lightsarenotanindicator thatthe
parking brakeisfully set;itis only intended tobe
a warning torelease theparking brakebefore
driving thecar.

A
Caution!
A partially engaged brakewilloverheat the
rear brakes, reducetheireffectiveness and
cause excessive wear.

~ Release theparking brakefully.
t> When parking yourcar,always setthe parking
brake bypulling allthe way uponthe lever.

t>
Move thegearshift levertoreverse orfirst
gear.

t>
Onhills also turnthefront wheels towards the
curb.
Brakes

t>
Please observe thechapter "AERODYNAMIC
COMPONENTS" onPage 9.

t>
Make itahabit tocheck theoperation ofyour
brakes beforedriving.
Keep inmind thatthebraking distance increases
very rapidly asthe speed increases. At60 mph or
100 km/h, forexample, itis not twice butfour
times longer than30mph or50 km/h. Tiretrac-
tion isalso lesseffective whentheroads arewet
or slippery.

t>
Therefore, alwaysmaintain asafe distance
from thecarinfront ofyou.

Vehicles withoutPorsche Ceramic Compos-
ite Brake (PCCB)

Even though thebrake discsconsist ofalloyed
grey castiron,theywillunavoidably starttocor-
rode ifyour carisparked foranextended period.
The brakes willtend to"rub" asthe result.
The nature, extentandeffects ofcorrosion de-
pend onthe amount oftime thevehicle was
parked, whether granular orliquid roadsaltwas
spread andwhether grease. were usedincar washes.
If the braking comfort isnoticeably impaired,we
recommend havingthebrake system checked by
experts atan authorized Porschedealer.
Brake
system function

Your Porsche isequipped withapower assisted
hydraulic dualcircuit brakesystem withdisc
brakes atthe front andrear.
Both circuits function independently. Onebrake
circuit operates thefront andtheother operates
the rear.
If one brake circuit hasfailed, theother willstill op-
erate. However, youwillnotice anincreased pedal
travel whenyouapply thebrakes.
Failure ofone brake circuit willcause thestopping
distance toincrease.

A
Warning!
Risk ofan accident.
In the unlikely eventofhydraulic failureof
one brake circuit:

t> Push thebrake pedaldownfirmly andhold itin
that position.
A mechanical linkageactivates thesecond cir-
cuit, andyou willbeable tobring thevehicle to
a stop.
t> After bringing yourvehicle toacomplete stop,
avoid driving thevehicle andinstead haveit
towed tothe nearest authorized Porschedeal-
er for repair.
Controls,Instruments

•Brakewarning lightUSA
~ Brakewarning lightCanada

If the warning lightsinthe instrument panelandon-
board computer goonwhile driving, thebrake flu-
id level maybetoo low, or(ifthe brake pedaltrav-
el has increased) oneofthe two brake circuits
may have failed.
A greater braking pressure willberequired, stop-
ping distances willbelonger andthebraking be-
havior willchange, particularly incurves.
With correctly adjustedbrakes,andacorrectly
working brakesystem, thepedal travel tothe
point ofbrake actuation shouldbe1-3/16 in.to
1-9/16 in.or30 to40 mm.
Whenever thebrake pedaltravel exceeds thisdis-
tance, havethebrake system checked.

42
Controls, Instruments
Brake
pedal

A
Warning!
Risk ofan accident.
Any obstruction ofthe brake pedalcould
increase thestopping distance.

~ Always checkthemovement ofthe brake ped-
al before driving andmake surethatitis not
obstructed byafloor matorany other object.
~ Secure thefloor mattoprevent itfrom sliding
into positions thatcould interfere withthesafe
operation ofyour vehicle.
Your Porsche dealerwillbeglad tooffer you
floor mats ofthe correct sizeincluding asecur-
ing possibility.

Note

In case oneofthe two brake circuits fails,in-
creased pedaltravel isrequired tobring your
vehicle toafull stop.
A

Warning!
To avoid overheating andpremature wearof
the brakes:

~ Before descending asteep grade, reduce
speed andshift thetransmission intoalower
gear ordriving position tocontrol speed.
~ Donot "ride thebrakes" byresting yourfooton
the pedal whennotintending toapply brake
pressure.
~ Donot hold thepedal downtoolong ortoo
often.
This could cause thebrakes toget hotand not
function properly.

Brakebooster

The brake booster assistsbraking onlywhen
the engine isrunning.

When thecar ismoving whiletheengine isnot run-
ning, orifthe brake booster isdefective, more
pressure onthe brake pedalisrequired tobring
the car toastop.
Moisture orroad saltonbrakes affects braking.
When thevehicle isdriven onsalted roadsforex-
tended periods, thebrakes shouldbewashed
down thoroughly aboutevery2weeks. Anauto-
matic carwash facilitycannot dothis jobproperly.
Brakes willdry after afew cautious brakeapplica-
tions.

/!\.
Warning!
Driving through watermayreduce thetrac-
tion. Moisture onbrakes fromroadwater, car
wash, orcoating ofroad saltmay affect
braking efficiency.

c>
Cautiously applybrakes totest brakes after
being exposed.
Brake
wear

Your carhas excellent brakes,butthey arestill
subject towear. Therate atwhich theywear de-
pends onhow thebrakes areused.

c>
Have thebrake system inspected atthe
intervals recommended inyour Maintenance
Booklet.

•• Warning lightUSA
• Warning lightCanada

If the warning lightsinthe instrument panelandon-
board computer stayonwhen theengine isrun-
ning orcome onwhile driving, thebrake padsare
worn, excessively.

c>
Donot continue tooperate thevehicle.
Have yourauthorized Porschedealerinspect
or replace thebrake pads.
Brake
pads

Wear onthe brake padsandbrake discsdepends
to agreat extent onthe driving styleandthecon-
ditions ofuse and therefore cannotbeexpressed
in actual milesonthe road.
The high-performance brakesystem isdesigned
for optimal braking effectatall speeds andtem-
peratures.
Certain speeds, brakingforcesandambient
conditions (suchastemperature andhumidity)
therefore mightcause "brake noises".

New brake padsorlinings

New brake padsandbrake discshavetobe "bro-
ken i",and therefore onlyattain optimal friction
when thecar has covered severalhundred miles

or km.

The slightly reduced brakingabilitymustbecom-
pensated forbypressing thebrake pedalharder.
This alsoapplies whenever thebrake padsand
brake discsarereplaced.
Controls, Instruments
43

ABSBrake System
(Antilock BrakeSystem)

The ABS system represents amajor contribution
to the enhancement ofactive safety inyour vehi-
cle. This system prevents thewheels fromlocking
in apanic stoponalmost allroad surfaces.
Controls, Instruments
With
theASS system inyour vehicle, the
following areasareenhanced:
Steering,
vehicleremains steerable underall
braking forceswhenABSisengaged.

Good directional control,
noswerving caused
by locking ofwheels underbraking conditions.

Shorter stopping distance,
stoppingdistances
are usually reduced because controlled brakingis
maximized.

Prevention of
wheel lock
up,
nobrake- induced
sliding andthus nolocalized tirewear fromemer-
gency braking.
The crucial advantage ofthe ABS system overa
conventional brakesystem isinthe area ofmain-
taining directional controlandmaneuverability of
the car inemergency situationsduringnormal
driving, including panicbraking inturns.
A

Warning!
The increased controlthatisprovided should
not induce youtotake greater riskswithyour
safety. Thelimits dictated bythe laws of
physics cannotbeovercome, evenwithASS.
The riskofaccidents duetoinappropriate
speed cannot bereduced, evenbythe ASS.
The driver bearstheresponsibility forall
driving maneuvers.

t>
Adapt yourdriving styletothe prevailing road
and weather conditions.
t> Obey alltraffic laws.

Other vehicles notequipped withtheASS
system maynotbeable tomaintain control,
especially onwet orpoor roadsurfaces and
thus maybemore likelytoimpact youfrom
behind.

t>
Tominimize thatrisk, useyour ABSsystem to
increase yourability tomaneuver toavoid dan-
gerous situations andnotmerely totry tostop
in the shortest distance possible.

Operation ofthe ABS system
A wheel speed sensor ismounted toeach ofthe
four wheels. Ifwheel lock-up ofeither ofthe front
wheels orthe rear wheels issensed duringbrak-
ing, thebrake pressure isadjusted automatically
until thewheel nolonger slips.Thebrake pressure
is regulated foreach frontwheel individually and
for both ofthe rear wheels together.
On aroad surface whichisslippery ononly one
side, therear wheel whichisbraking onthe slip-
pery surface determines thebrake pressure which
will beapplied equallytoboth rearwheels. Thisen-
sures thatdirectional stabilityismaintained. How-
ever, ifbraking forcesapproach thewheel lock-up
point forallwheels (panicbraking) theABS system
will intervene toprovide arapid rythmic braking.
The proper operation ofABS isperceived bythe
driver asapulsating brakepedalinconjunction
with audible noiseandperhaps somevibration.

I>
Ifyou experience thesesensations whiledriv-
ing oraroad surface withquestionable trac-
tion, reduce vehicle speedappropriate forthe
prevailing roadconditions.
The functional readinessofall the main electrical
components ofthe ABS ischecked byan
electronic monitoring systembothbefore and
while youdrive. •
Warning lightUSA
• Warning lightCanada
When theignition isswitched onthe ABS warning
light willlight upwhile thesystem iselectronically
interrogated andgoes outwhen theengine is
started ifthe check isnot yetcomplete.
If the ABS warning lampfailstogo out, thisindi-
cates thatABS hasbeen deactivated duetoa
fault. Ifthe warning lightsinthe instrument panel
and on-board computer lightupwhile youaredriv-
ing, this indicates thatafault hasoccurred. Inboth
cases, normal braking, asinvehicles withoutABS,
is still retained.
The ABS system should,however, beexamined at
an authorized Porschedealerimmediately topre-
vent theoccurrence offurther faults.

I>
Ifthe ABS system becomes inoperative, take
your vehicle toyour authorized Porschedealer
immediately.
A

Warning!
The control unitofthe ABS brake system is
set forstandard tiresize. Ifnon-standard
tires areinstalled, thecontrol unitmay mis-
interpret thespeed ofthe vehicle, because of
the variant dataitreceives fromthesensors
on the axles.

I>
Use only tiremakes andtypes tested by
Porsche.
Controls,Instruments

Switchposition 1

Ignition ison.
All electrical equipment canbeswitched on.
The warning lightslightupfor alamp check.
Please notethedescription ofthe individual warn-
ing lights.

I>
When turning thekey toposition 1,relieve the
steering lockwith aslight steering movement.

Note

To conserve batterypoweratlow rpm (traffic
jams, towndriving etc.),switch offallelectrical
consumers whicharenotneeded atthat moment.
Switch
position 2

Starting theengine

I>
Turn thekey from position 1to position 2.

The clutch pedalmustbedepressed fully
before thestarter willengage.

The first operation ofthe starter isended automat-
ically when theengine starts.
If the engine doesnotstart, subsequent starter
operations willnotbeended automatically.
If the engine doesnotstart atthe first time or
stalls atany time, thekey must bereturned to
position O.
When theengine isrunning, thewarning lights
should gooff. Ifa light does notgooff, take
appropriate actionasindicated inthis manual.
Switching
engineoff

I>
Turn theignition keyfrom position 1to
position O.

/!\
Warning!
Risk ofan accident.
The steering wheel
willlock
andwillcause
loss ofsteering.

I>
Never remove keyfrom theignition lockorturn
the key offwhile thevehicle ismoving.

I>
Toavoid battery run-down, alwaysremove the
ignition keyfrom theignition lock.
Please observe thechapter "SATTERY" on
Page 155.

I>
Turn thesteering wheeluntilthesteering lock
is engaged.

Gong
If you leave thekey inthe ignition/steering lock,a
gong willsound whenthedriver's doorisopened.
This isareminder toremove thekey.
Controls, Instruments
51

StartingProcedures

c>
Please observe thechapter "IMMOBILIZER" on
Page 19.

A
Warning!
Serious injurymayresult ifyou areinvolved
in acollision withouthavingfastened the
safety belts.

c>
Fasten safetybeltsbefore driving away.

Before starting theengine

c>
Apply thehandbrake.

c>
Move thegearshift leverintoneutral.

The clutch pedalmustbedepressed fully
before thestarter willengage.

Temperature sensorsonthe engine automatically
provide thecorrect fuel/air mixture required for
starting.
Therefore, itis
not necessary todepress the
accelerator pedal
whilestarting acold ora
warm engine.

c>
Assoon asthe engine starts,release theigni-
tion key.

52
Controls, Instruments The
first operation ofthe starter isended automat-
ically when theengine starts.
If the engine doesnotstart, subsequent starter
operations willnotbeended automatically.
If the engine failstostart after 10or15 seconds
of cranking:

c>
Wait about 10seconds beforeengaging the
starter again.

c>
Donot letthe engine idletowarm up.

c>
When starting theengine, beready todrive
immediately.
Drive vehicle atmoderate speedsandavoid
engine speeds above4,200 rpmduring the
first 5minutes.
A

Danger!
Engine exhaust fumeshavemany compo-
nents which youcan smell. Theyalsocontain
carbon monoxide (CO),which isacolorless
and odorless gas.
Carbon monoxide cancause unconscious-
ness andeven death ifinhaled.

c>
Never startorlet the engine runinan en-
closed, unventilated area.
It is not recommended tosit inyour carforpro-
longed periods withtheengine onand thecar
not moving.

An unattended vehiclewitharunning engine
is potentially hazardous.
If warning lightsshould comeontoindicate
improper operation, theywould gounno-
ticed.

c>
Never leavetheengine idlingunattended.

Danger offire.

c>
Donot park oroperate thevehicle inareas
where thehotexhaust systemmaycome in
contact withdrygrass, brush,fuelspill oroth-
er flammable material.

c>
Ifyour carcatches onfire forany reason, call
the fire department.
Do not endanger yourlifebyattempting toput
out the fire.

Stopping Engine

I>
Turn keyback toposition
O.

I>
Donot stop engine immediately afterhardor
extended driving.
Keep engine running atincreased idlefor
about twominutes toprevent excessive heat
build-up beforeturning offengine.

I>
Toavoid battery run-down, alwaysremove the
ignition keyfrom theignition lock.

I>
Make surethatwhen youleave thecar, even
briefly, youhave withdrawn theignition key.

I>
Engage thesteering lockbymoving thesteer-
ing wheel tothe leftorright.
Turn thesteering wheeltothe locking position
before youswitch offthe engine sothat you
don't havetoexert yourself whenlocking or
unlocking thesteering.

A
Warning!
Hot engine compartment componentscan
burn skinoncontact.

I>
Before working onany part inthe engine com-
partment, turntheengine offand letitcool
down sufficiently.
Engine-compartment
blower,
radiator fan

The radiator andradiator fansareinthe front of
the car.
The engine-compartment blowerismounted on
the engine compartment lid.

A
Warning!
Risk ofinjury.
After theengine isswitched off,theengine-
compartment andcoolant temperatures are
monitored forapprox. 20minutes.
During thisperiod, anddepending ontem-
perature, theengine-compartment blower
and radiator fansmaycontinue torun or
start torun.

I>
Carry outwork inthese areasonlywith theen-
gine off,theignition off,and exercise extreme
caution.
Automatic
garagedoor

The ignition systeminyour Porsche mayinterfere
with your electronically operatedgaragedoor.

I>
Tocheck this,drive yourPorsche closetothe
garage door.Make surenottointerfere with
the operating rangeofthe door.

I>
Run theengine atdifferent speeds.
If the garage dooropens orcloses without youop-
erating thegarage doorunitinyour car,contact
the dealer whoinstalled theautomatic garage
door tohave thefrequency and/orcodingofthe
garage doorsignal changed ormodified.
Controls, Instruments

Instrument PanelUSAModels

Also refer tothe corresponding chaptersin
the Owner's Manual.

1 Voltmeter
2 Speedometer withanalogue display
3 Speedometer withdigital display
4 Automatic speedcontrol indicator light
5 Tachometer
6 Turn signal indicator light,left
7 High beam indicator light
8 On-board computer
9 Turn signal indicator light,right
10 Light sensor forinstrument illumination
11 Clock
12 Cooling system
Temperature gauge,warning light
13 Fuel
Level gauge, warning light
14 Engine oilpressure gauge
Controls, Instruments
Warning
lightslindicator lights

A Washer fluidlevel warning light
B Check engine warning light
CABS warning light
D Brake fluidlevel,
Brake distribution warninglight
E Parking brakewarning light
F Brake padwear warning light
G Engine oilpressure warninglight
H Battery warning light
I Safety beltwarning light

J
Airbag warning light
K Luggage compartment lid/
engine compartment lidwarning light
When
theignition isswitched on,the warning
lights lightupfor alamp check.
Note

Warnings thathave been given arestored inthe
appropriate controlunitmemory andcanberead
out atan authorized Porschedealer.
This information canhelp towarn youabout situa-
tions which maybehazardous toyou oryour car.

Instrument PanelCanada Models

Also refer tothe corresponding chaptersin
the Owner's Manual.

1 Voltmeter
2 Speedometer withanalogue display
3 Speedometer withdigital display
4 Automatic speedcontrol indicator light
5 Tachometer
6 Turn signal indicator light,left
7 High beam indicator light
8 On-board computer
9 Turn signal indicator light,right
10 Light sensor forinstrument illumination
11 Clock
12 Cooling system
Temperature gauge,warning light
13 Fuel
Level gauge, warning light
14 Engine oilpressure gauge
Controls, Instruments
Warning
Iights/indicator lights

A Washer fluidlevel warning light
B Check engine warning light
CABS warning light

o
Brake fluidlevel,
Brake distribution warninglight
E Parking brakewarning light
F Brake padwear warning light
G Engine oilpressure warninglight
H Battery warning light
I Safety beltwarning light

J
Airbag warning light
K Luggage compartment lid/
engine compartment lidwarning light
When
theignition isswitched on,the warning
lights lightupfor alamp check.
Note

Warnings thathave been given arestored inthe
appropriate controlunitmemory andcanberead
out atan authorized Porschedealer.
This information canhelp towarn youabout situa-
tions which maybehazardous toyou oryour car.