2004 PORSCHE 911 GT3 brake sensor

coolant reservoir trailer child seat relay tires sport mode

Page 46 of 195

PORSCHE 911 GT3 2004 5.G Owners Manual
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 isadjuste

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

Page 53 of 195

PORSCHE 911 GT3 2004 5.G Owners Manual
StartingProcedures

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

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

c>
Fasten sa

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.

Page 55 of 195

PORSCHE 911 GT3 2004 5.G Owners Manual
Instrument PanelUSAModels

Also refer tothe corresponding chaptersin
the Owners Manual.

1 Voltmeter
2 Speedometer withanalogue display
3 Speedometer withdigital display
4 Automatic speedcontrol ind

Page 57 of 195

PORSCHE 911 GT3 2004 5.G Owners Manual
Instrument PanelCanada Models

Also refer tothe corresponding chaptersin
the Owners Manual.

1 Voltmeter
2 Speedometer withanalogue display
3 Speedometer withdigital display
4 Automatic speedcontrol

Page 193 of 195

PORSCHE 911 GT3 2004 5.G Owners Manual
J

Jumper cables "145,160

K

Keys 19,20

L

Leather care 135
License platelight.. 82,172
Lids 99
Emergency unlocking 154
Light
Flasher 61,82, 83
Low beam 82,83
Switch 82,83
Light sensor forinstrumen

oil pressure glove box fuel type open hood wiring spark plugs replace