2004 PORSCHE 911 GT3 warning

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.

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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.

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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.

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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.

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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

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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.

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Never remove keyfrom theignition lockorturn
the key offwhile thevehicle ismoving.

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

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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

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Apply thehandbrake.

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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.

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Donot letthe engine idletowarm up.

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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

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Turn keyback toposition
O.

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

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

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briefly, youhave withdrawn theignition key.

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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.

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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.

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

The ignition systeminyour Porsche mayinterfere
with your electronically operatedgaragedoor.

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

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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.

o
Voltmeter

Indicates thebattery voltage.
Normal range:12to16 volts.
The voltage maydrop considerably whenthe
vehicle isbeing started.

If the gauge iscontinually below12volts
when theengine isrunning:

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Have thebattery charging systemchecked at
an authorized Porschedealer.
Controls, Instruments
BaHery

• Warning light

The warning lightinthe instrument panelcomes
on when ignition isswitched onand must gooff
when engine isrunning.

If the warning lightsinthe instrument panel
and on-board computer comeonwhile the
engine isrunning orwhile driving:

t>
Stop thecarinasafe place andstop the
engine.

Possible causes

- Defect inthe battery charging system.
- Broken drivebelt.

A
Warning!
Risk ofan accident andriskofengine dam-
age.
A broken drivebeltmeans thereisno power
assistance tothe steering (moreeffortisre-
quired tosteer) andcoolant pumpfunction
will stop.

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Donot continue driving.

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Have thefault remedied atthe nearest autho-
rized Porsche dealer.
A
-
Adjustment buttonforinstrument illumination and
trip counter

•. ~ Automatic SpeedControl

Indicator light

Indicates automatic speedcontrol readiness.

Instrument Illumination
The illumination isautomatically adjustedtothe
ambient brightness bythe light sensor inthe
tachometer.
In addition, whenthecar lights areswitched on,
the instrument andswitch symbol brightness can
be manually adjusted.

/!\
Warning!
Risk ofan accident, personalinjuryandloss
of control.

t>
Donot reach through thesteering-wheel
spokes whiledriving. Dimming
instrument illumination

t>
Turn adjustment buttonAin the appropriate di-
rection andhold ituntil thedesired brightness
has been reached.
The chosen levelofbrightness isindicated by
a bar display inthe display fieldofthe on-board
computer. Trip
Odometer

/!\
Warning!
Risk ofan accident, personalinjuryandloss
of control.

t>
Donot reach through thesteering-wheel
spokes whiledriving.
Resetting tozero

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Press adjustment buttonAfor approximately
one second
or

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Reset thedistance inthe "SET" menuofthe on-
board computer.
Please observe thechapter "ON-BOARD COM-
PUTER (BC)"onPage 67.
After exceeding 6213milesor9999 kilometers,
the counter returnsto"0".
Controls, Instruments
59