2004 PORSCHE 911 GT3 light

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

A,
D-$witch forreading light
on
driver's/
passenger's side

B -
Interior lightswitch

C -
Orientation lightswitch

E -
Orientation light

Interior lights

l>
Please observe thechapter "LOADSWITCH-
OFF AFTER TWOHOURS ORFIVE DAYS" on
Page 152.

46
Controls, Instruments
Interior
light,reading lights

Switching off

l>
Press lefthalf ofswitch.

Switching tocontinuous illumination

l>
Press righthalfofswitch_

Switching onand offautomatically

l>
Move switch tocenter position.
The lights are
switched on
when adoor is
unlocked oropened orwhen theignition keyis
withdrawn fromtheignition lock.
The lights are
switched off
with adelay ofap-
prox. 30seconds afterthedoor isclosed.
The light goes outimmediately assoon asthe
ignition keyisinserted inthe ignition lockor
the vehicle islocked.
Orientation
light

Light-emitting diodesinthe doors andinthe
interior lightimprove yourorientation insidethe
vehicle whenitis dark.
The light-emitting diodesareswitched onwhen the
vehicle isunlocked andswitched offagain when
the vehicle islocked.

Light-emitting diodeinthe interior light

Changing thebrightness ofthe light-emitting
diode:

l>
Press switch Cwith apointed object(suchas
a ball-point pen).
The brightness changes.

:8:
Footwell Lights

The lights areswitched onautomatically whena
door isopened andgoout with adelay ofapprox.
30 seconds afterthedoor isclosed.

Switching tocontinuous illumination

l>
Press therocker-switch symbolinthe center
console. Indicator lightcomes on.
The lights between thesun visors andthedoor
guard lightsareswitched onadditionally. The
lights areautomatically switchedoffafter approx.
12 minutes inorder tosave thevehicle battery.
The lights canbeswitched backonbypressing
the rocker switchagain.

Switchinglightsoff

l>
Press theindicator lightinthe rocker switch.
Controls,Instruments
47

Operation, Instruments

1 Side vent
2 Ignition/starter switchwithsteering lock
3 Space forhands-free microphone for
telephone
4 Turn signals/
headlight dimmer/flasher lever
5 Instrument panel
6 Horn
7 Windshield wiper/washer lever
8 Emergency flasherswitch
9 Rocker switches forfootwelilight
10 Readiness displayforalarm system
11 Central vent
12 Cupholder
13 Control panelforheating, ventilation,
air conditioning
14 Rocker switches for
central locking,
rear window anddoor mirror heating

48
Controls, Instruments 15
Speaker
16 Light switch
17 Operating leverforon-board computer
18 Locking leverforsteering-wheel adjustment
19 Operating leverforautomatic speedcontrol
20 Wipe interval control
21 Radio
22 Cigarette lighter
23 Glove compartment
24 Interior temperature sensor

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.

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.