2004 PORSCHE 911 GT3 ECU

Power transmission

The differential lock,which wasdesigned foruse
in motor sport,maymake aslight noisewhen
maneuvering andontight corners.

Porsche Ceramic Composite Brake
IPCCB)

The high-performance brakesystem isdesigned
for optimal braking effectatall speeds andtem-
peratures. Certainspeeds, brakingforcesandam-
bient conditions (suchastemperature andhumid-
ity) therefore mightcause brakenoises.
Wear onthe different components andbraking
system, suchasbrake padsorbrake discs,
depends toagreat extent onthe individual driving
style andtheconditions ofuse andtherefore
cannot beexpressed inactual milesonthe road.
The values communicated byPorsche arebased
on normal operation adaptedtotraffic. Wearin-
creases considerably whenthevehicle isdriven
on race tracks orthrough anaggressive driving
style.

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Please consult yourauthorized Porschedealer
about thecurrent guidelines
in
effect before
such useofyour vehicle.
Aerodynamic
components

To benefit fromthehigh driving performance with-
out impairing thedriving safetyorthe service life
of the vehicle components, certainvehicle parts
must bealways fullyoperational whiledriving.

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Regularly checkyourvehicle forsigns ofdam-
age.
Damaged, wornormissing aerodynamic com-
ponents suchasspoilers orunderside panels
affect driving behaviour andmust therefore be
replaced immediately.
To optimise thecooling ofthe PCCS brakediscs,
large airbrake spoilers arefitted tothe front and
rear running gearcontrol arms.
If these air-brake spoilersarenotfitted andthere
is ahigh thermal demand onthe braking system,
the service lifeofthe PCCS brakediscscould be
reduced.
The aerodynamic stabilityofthe vehicle isinflu-
enced considerably athigh speeds bythe front lip.
Due tothe small ground clearance requiredforthe
optimisation ofthe driving behaviour, thefront lip
and theair-brake spoilershavetobe placed inex-
posed positions tofulfil their function. Theycanbe
damaged, forexample byground orcurbstone
contact.
Ground
clearance

Please bear
in
mind thelimited ground clearance
of your caronuneven surfaces, whenparking
(curbs), onramps, liftingplatforms, etc.

Seating
Your carhas two seats.
The area behind theseats isnot intended forpas-
sengers.

A
Danger!
Severe personal injuryordeath canresult in
the event ofan accident.

I>
Never allowanyone tosit inthe area behind the
seats.

Beforedrivingoff.. 14
Break inhints forthe first
1,000 miles/1,600 kilometers 16
Keys 19
Security WheelBolts 19
Doors 21
Central Locking 22
Alarm System, InfraredPassenger
Compartment Monitoring 24
Power Windows 26
Inside mirror 28
Rear View Mirrors 28
Rear Window Defogger,
Door Mirror Heating 29
Seat Adjustment 30
Steering WheelAdjustment.. 31
Safety Belts 32
Child Restraint Anchorages 35
Child Restraint Systems 36
Airbag Systems 38
Clutch Pedal 40
Parking Brake 40
Brakes 41
ABS Brake System
(Antilock BrakeSystem) 44
Interior lights 46
Footwell Lights 47
Operation, Instruments 48
Ignition/Starter Switchwith
anti-theft SteeringLock 50
Starting Procedures 52
Stopping Engine 53Instrument
PanelUSAModels 54
Instrument PanelCanada Models 56
Voltmeter 58
Automatic SpeedControl 58
Instrument Illumination 59
Trip Odometer 59
Speedometer 60
Changing overbetween
Miles /Kilometers 60
Tachometer 61
Turn Signal Indicator Light 61
High Beam 61
Cooling System 62
Fuel 63

C~k ~

Engine OilPressure 65
Check Engine
Warning Light 66
On-Board Computer (BC) 67
Warnings inthe Instrument Panelandinthe On-
Board Computer 75
Emergency FlasherSwitch 81
Light Switch 82
Automatic HeadlightBeamAdjustment 82
Turn Signal /
Headlight Dimmer/Flasher Lever 83
Windshield Wiper/Washer Lever 84
Automatic SpeedControl 86
Heating andVentilation 88
Automatic AirConditioning 90
Central andSide Vents 93
Fresh-air Intake 93Controls,
Instruments
Ashtray 94
Cigarette Lighter 94
Cupholder 95
Storage inthe Passenger Compartment 96
Luggage Compartment Lidand
Engine Compartment Lid 98
Luggage Compartment.. 100
Trunk Entrapment 101
Sun Visors 103
Spoiler, SideMember Panels 104
Car Audio Operation/Tips 105
Car Telephone and
Aftermarket Alarms 107
Roof Transport System 108
Gearshifting 109
Controls, Instruments

DearPorsche Owner

A lot has gone intothemanufacture ofyour
Porsche, includingadvanced engineering, rigid
quality control anddemanding inspections.
These engineering andsafety features willbe
enhanced byyou ...

the safe driver ...

- who knows hiscar and allcontrols,
- who maintains thevehicle properly,
- who uses driving skillswisely andalways
drives withinher/his owncapabilities andthe
level offamiliarity withthevehicle.
You willfind helpful hintsinthis manual onhow to
perform mostofthe checks listedonthe following
pages.
If in doubt, havethese checks performed byyour
authorized Porschedealer.
Controls, Instruments
Before
driving off...

Check thefollowing itemsfirst

I>
Turn theengine offbefore youattempt any
checks orrepairs onthe vehicle.

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Besure thetires areinflated correctly.
Check tiresfordamage andtirewear.

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See that wheel boltsareproperly tightened
and notloose ormissing.

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Check engine oillevel, addifnecessary.
Make itahabit tohave engine oilchecked with
every fuelfilling.

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Check allfluid levels suchaswindshield
washer andbrake fluidlevels.

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Besure thevehicle battery iswell charged and
cranks theengine properly.

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Check alldoors andlidsforproper operation
and latch them properly.

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Check, andifnecessary replacewornor
cracked wiperblades.

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See that allwindows areclear andunob-
structed.

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Check airintake slotsandarea between lug-
gage compartment lidand windshield arefree
of snow andice,sothe heater andthewind-
shield wipers workproperly.
I>

Ifachild willberiding inthe vehicle, check
child seat/child seatrestraint systemtoen-
sure thatrestraints areproperly adjusted.

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Check allexterior andinterior lightsforopera-
tion andthat thelenses areclean.

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Check theheadlights forproper aim,andif
necessary, havethem adjusted.

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Check underthevehicle forleaks.

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Besure allluggage isstowed securely.

Emergency equipment

It is good practice tocarry emergency equipment
in your vehicle.
Some ofthe items youshould haveare:
window scraper, snowbrush, container orbag of
sand orsalt, emergency light,small shovel, first-
aid kit, etc.

Keys

I>
Please observe thechapter "ALARM SYSTEM,
INFRARED PASSENGER COMPARTMENT MON-
ITORING" onPage 24.

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Please observe thechapter "CENTRAL LOCK-
ING" onPage 22.
Two main keysandonespare keyaresupplied
with your Porsche.
These keysoperate allthe locks onyour vehicle.

I>
Becareful withyour carkeys: donot part with
them except underexceptional circumstanc-

es.

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Toavoid battery run-down, alwaysremove the
ignition keyfrom theignition lock.
Replacement
keys

Replacement carkeys canbeobtained onlyfrom
your authorized Porschedealer,andthis can
sometimes bevery time-consuming.
You should therefore alwayskeepthespare key
on your person.
Keep itin asafe place (e.g.wallet), butunder no
circumstances inor on the vehicle.
The keycodes ofnew keys have tobe "reported"
to the carcontrol unitbyyour authorized Porsche
dealer.
The keygrip ofthe spare keycan beexchanged
for amain-key grip.

Disabling keycodes

If a key islost, thekey codes canbedisabled by
an authorized Porschedealer.
All the remaining carkeys arerequired forthis pur-
pose.
Disabling thecode ensures thatthecar can be

started
onlyusing authorized keys.

Note

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Please notethattheother lockscanstillbe
opened withthedisabled key.
Immobilizer

There isatransponder (anelectronic component)
in the key grip, containing astored code.
When theignition isswitched on,the ignition lock
checks thecode.
The immobilizer canbedeactivated andtheen-
gine started onlyusing anauthorized ignitionkey.

Note

If the ignition isleft onfor more thantwominutes
without starting theengine, theimmobilizer isre-
activated.

I>
Ifthis happens, theignition keymust beturned
back tothe "0"position beforetheengine can
be started.
The immobilizer isautomatically activatedwhen
the ignition keyiswithdrawn.
Security WheelBolts

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Ifwheels havetobe removed duringawork-
shop visit,donot forget tohand overthesock-
et for the security wheelboltsalong withthe
car key.
Controls,Instruments
19

SafetyBelts

/!\
Warning!
Always makesureyour andyour passenger's
safety beltsareproperly fastened whilethe
vehicle isin motion.
Failure tofollow safety beltwarnings mayre-
sult inserious personal injury.

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For your andyour passenger's protection,use
safety beltsatall times whilethevehicle isin
motion.

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Use appropriate childrestraint systemsforall
small children.

Proper wearing ofsafety belts

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Safety beltsmust bepositioned onthe body as
to restrain theupper bodyandlapfrom sliding
forward. Improperly positionedsafetybelts
can cause serious personal injuryincase ofan
accident.

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The shoulder beltshould always restonyour
upper body.Theshoulder beltshould neverbe
worn behind yourback orunder yourarm.

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For maximum effectiveness, thelapbelt
should beworn lowacross thehips.

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Pregnant womenshouldposition thebelt as
low aspossible acrossthepelvis. Makesureit
is not pressing againsttheabdomen.
Controls, Instruments
I>

Belts should notbeworn twisted.

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Donot wear beltsoverrigidorbreakable ob-
jects inor on your clothing, suchaseye glass-
es, pens, keys,etc.asthese maycause injury.

I>
Several layersofheavy clothing mayinterfere
with proper positioning ofbelts.

I>
Belts mustnotrub against sharpobjects or
damage mayoccur tothe belt.

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Two occupants shouldneversharethesame
belt atthe same time.

Care andmaintenance

I>
Keep beltbuckles freeofany obstruction that
may prevent asecure locking.

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Belts thathave been subjected toexcessive
stretch forcesinan accident mustbeinspect-
ed orreplaced toensure theircontinued effec-
tiveness inrestraining you.
The same applies tobelt tensioner systems
which havebeen triggered.
In addition, theanchor pointsofthe belts
should bechecked.

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Ifsafety beltsdonot work properly, seeyour
authorized Porschedealerimmediately.

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Ifthe belts show damage towebbing, bindings,
buckles orretractors, theyshould bereplaced
to ensure safeoperation.
I>

Donot modify ordisassemble thesafety belts
in your vehicle.

I>
The belts must bekept clean orthe retractors
may notwork properly
Please observe thechapter "CARCARE IN-
STRUCTIONS" onPage 130.

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Never bleach ordye safety belts.

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Donot allow safety beltstoretract untilthey
are completely dryafter cleaning orthis may
cause damage tothe belt.

Belt tensioner

Depending onthe force ofan impact, fastened
seat belts aretightened inan accident.

The belttensioners aretriggered in:

- Frant andrear impacts

The belttensioners arenottriggered in:

- Side impacts
- Vehicle overturning

Note

The belttensioner systemcanbetriggered only
once; thesystem mustbereplaced afterward.
Work maybeperformed onthe belt-tensioner sys-
tem only byanauthorized Porschedealer.
Smoke isreleased whenthebelt tensioners are
triggered. Thisdoes notindicate afire inthe
vehicle.

o
SafetyBeltWarning System

An audio-visual warning
systemisinterconnect-
ed with thedriver's safetybelt.
Every timetheignition isturned on,the gong will
sound forabout 6seconds toremind driverand
passenger tobuckle up.
The safety beltwarning lightsinthe instrument
panel andon-board computer willgooffassoon
as the driver hasbuckled up.
Inertiareelretractor
The combination lap/shoulder beltwith inertia reel
locking mechanism adjustsautomatically toyour
size andmovements aslong asthe pull onthe belt
is slow.
Rapid deceleration duringhardbraking oracolli-
sion locks thebelt. Thebeltwillalso lockwhen you
drive upordown asteep hillorinasharp curve,
otherwise, theshoulder beltwillnotinhibit your
upper bodymovement. ~
Assume acomfortable sittingposition.
The shoulder beltshould always restonyour
upper body.Theshoulder beltshould neverbe
worn behind yourback orunder yourarm.
~ Tofasten, graspbeltandpullthebelt inacon-
tinuous slowmotion acrossyourchest andlap.
~ Insert belttongue intobuckle oninboard side
of seat. Pushdown until
it
securely lockswith
an audible click.Pullthebelt tocheck.
~ Pull shoulder sectiontomake surebeltfits
snugly across thepelvis.
~ Belts should fitsnugly across thepelvis and
chest. Makesurethere isno slack inthe belt.
~ Tounfasten belt,push inrelease button
(ar-

row)
onbuckle. Belttongue willspring outof
buckle.
~ Torelease alatched belt,leanback totake the
body pressure offthe belt.
~ Tostore lap/shoulder belt,allow thebelt tore-
tract asyou guide thelatch toits stowed posi-
tion.
~ Please observe thechapter "AUTOMATIC
LOCKING RETRACTOR" onPage 34.

~ ~~

Controls, Instruments

Safetybeltheight adjustment

Adjust theheight ofthe safety beltsothat itruns
across themiddle ofthe shoulder, notagainst the
neck.

Adjusting beltheight

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Up-push beltdeflector.

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Down -press button
(arrow)
andmove belt
deflector.

34
Controls, Instruments
Automatic
lockingretractor

The safety beltforthe passenger seatisequipped
with anautomatic lockingretractor forsecuring
the child restraint system.
When activated, thisretractor allowsyoutose-
curely fasten thechild restraint systeminplace so
that inadvertent movements willnot occur.

Activating theautomatic lockingretractor

1. Pull thesafety beltretractor
completely
out.
At this point thelocking mechanism isacti-
vated.
2. Insert thesafety belttongue intothebuckle
and make certain thatitis properly latched.
3. Allow thesafety belttoretract untilitis tight on
the child restraint system.Youmay further
tighten thebelt bypulling onitto allow more of
it to retract.

Releasing thesafety belt

1. Unbuckle thesafety beltlatch.
2. Then make certain thatthebelt hasfully
retracted.
At this point theautomatic lockingfeature will
be disengaged.

ChildRestraint Systems

Porsche recommends thatallinfants andchildren
be restrained inchild restraint systemsatall times
while thevehicle isinmotion inaccordance with
applicable laws.
The useofinfant orchild restraints isrequired by
law inall 50 states andtheCanadian provinces.
The child restraint systemshouldbeone that com-
plies withU.S. Federal/Canadian MotorVehicle
Safety Standards 213andshould besecured by
a lap belt orlap belt portion ofalap-shoulder belt.
A statement bythe seat manufacturer ofcompli-
ance withthisstandard canbefound onthe in-
struction labelonthe restraint andinthe instruc-
tion manual provided withtherestraint.
Controls, Instruments
/!\

Danger!
Risk ofserious personal injuryordeath tothe
child.

r> Follow allchild restraint instructions andwarn-
ings inthis manual.
- When usinganinfant orchild restraint system,
be sure tofollow allmanufacturer's instruc-
tions oninstallation anduse.
- Infants andsmall children shouldneverbeheld
on the lap, norshould theyshare asafety belt
with another occupant whilethevehicle isin
motion.
- Children toobigforchild restraint systems
should useregular safetybelts.Ashoulder belt
can beused providing itdoes notcross the
face orthe neck ofthe child.

The airbag deactivation deviceinstallation
requires specialprogramming availableonly
from yourauthorized Porschedealer.
Your authorized Porschedealerwillbeglad
to advise youabout theinstallation possibility
for aPorsche childrestraint systemwhich
allows deactivation ofthe passenger's
airbags.
/!\

Danger!
The useofachild restraint systeminthe pas-
senger seatwithout airbagdeactivation can
result inserious personal injuryordeath to
the child from anairbag deployment.
To reduce riskofinjury fromaninflating
airbag inan accident, Porschestronglyrec-
ommends:

r> Donot use achild restraint systeminthe pas-
senger seatunless thepassenger airbagsare
deactivated.