instrument panel PORSCHE 911 GT3 2004 5.G User Guide

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

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

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:

t>
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.

t>
Donot continue driving.

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

•. ~ Automatic SpeedControl

Indicator light

Indicates automatic speedcontrol readiness.

Engine OilPressure

~ Gauge

With awarmed-up engineandataspeed of3000
rpm, theoilpressure shouldbeapprox. 3.5bar.
If
the oilpressure dropsabruptly andthe
warning lightsinthe instrument panelandin
the on-board computer comeonwhile the
engine isrunning orwhile driving:

I>
Immediately stopinasuitable place
and switch engine off.
Measures see"Warning light".

Warning light

The warning lightinthe instrument panellightsup
when ignition isswitched onand must goout when
engine isrunning.

If the warning lightsinthe instrument panel
and inthe on-board computer comeonwith
the engine running orwhile driving:

I>
Immediately stopinasuitable place.

I>
Switch offthe engine.

I>
Check whether thereisan obvious oilleak on
or under thecar.

I>
Ifno oilleak canbedetected:
Measure theoillevel using theon-board com-
puter orthe oildipstick
withtheengine
idling.

Please observe thechapter "ON-BOARD COM-
PUTER (BC)"onPage 67.
Please observe thechapter "ENGINE OillEV-
El" onPage 115.

I>
Add engine oilifnescessary.
/!\

Caution!
Risk ofengine damage.

I>
Donot continue drivingifthere isan obvious oil
leak.

I>
Donot continue drivingifthe warning lights
come oneven though oillevel iscorrect.

I>
Have thefault remedied atthe nearest
authorized Porschedealer.
Controls, Instruments
65

CheckEngine
Warning Light

The warning lightinthe instrument panelcomes
on when theignition isfirst turned onand remains
on briefly asabulb check. Ifthe light does not
come on,have thebulb replaced promptly.
If the warning lightsinthe instrument panelandon-
board computer comeonand remain onwhile
driving, itsuggests:
- apotential enginecontrol problem andthe
need forsystem serviceor
- animproperly fastenedtankcapor
- refuelling withengine running.
Although thevehicle isusually driveable andwill
not require towing, seeyour dealer forservice as
soon aspossible.
Controls, Instruments
A

Caution!
If the Check engine lightinthe instrument
panel isflashing, severecatalytic converter
damage andpower losswillsoon occur.
Prolonged drivingwiththeCheck engine
light oncould cause damage tothe emission
control system. Italso could affect fuelecon-
omy anddriveability.

I>
Have thefault remedied atthe nearest autho-
rized Porsche dealerimmediately.

Warnings inthe Instrument Panelandinthe On-Board Computer

If
awarning message appears,alwaysrefertothe corresponding chaptersinthe Owner's Manual.
Warning messages areissued only
if
all measurement preconditionsaremet.
Therefore, checkallfluid levels regularly -in particular, alwayschecktheengine oillevel before refuelling.

Instrument
panel

USA
On-board
computer Text
display in
on-board computer

Seat belt
Handbrake
Meaning/measure

Driver andpassengers mustfasten theirsafety belts.
Handbrake notreleased.
Canada
p
:iJ

i'!!
Ignition
key

•••
not
removed

ri]
lights
on

III
FronVrear

•••
lid
not
closed

~
Refill
washer fluid
Trip counter
reset Close
luggage compartment lid,
engine compartment lid.
Trip odometer isreset to
O.

Controls,Instruments
75

Instrument On-board
Textdisplay in
Meaning/measure
panel computer
on-boardcomputer

Units Theunits kilometers/miles forspeed anddistance
are changed
werechanged.
LIMIT Currentspeedcanbeaccepted forthe acoustic
Cannot be
warningsignalonlyifthe vehicle isinmotion.
accepted with
vehicle stopped

USA
LIMIT
Selectedspeedlimitforthe acoustic warningsignal

~
exceeded
hasbeen exceeded.
Adjust yourspeed ifnecessary.

Canada
~

Fuel level gauge

IJl
Consider
rangeon
Refuelatthe next opportunity.
warning light
remainingfuel

II
Engine
oil
Stopimmediately atasuitable place,
pressure measureoillevel withtheon-board computer and,if
too low
necessary,addengine oil.
Temperature
•
Engine
Switchengineoffand letitcool.
gauge warning
temperature Checkcoolant leveland,ifnecessary,
light toohigh
addcoolant.
Temperature Check
Switchengineoffand letitcool.
gauge warning
coolantlevel
Checkcoolant leveland,ifnecessary,
light flashes
addcoolant.

76
Controls, Instruments

Instrument On-board
Text
display in Meaning/measure
panel computer
on-board
computer

Q
ri1
Check
Engine Please
observe thechapter
"CHECK ENGINE
WARNING LIGHT"
onPage 66.
Have thefault remedied atan authorized Porsche
dealer.
Temperature
~
Failure
of Have
faultremedied atan authorized Porschedealer.
gauge warning engine-
light flashes compartment
blower

[iJ
Warning
Stop
inasafe place andswitch theengine off.Donot
battery/ continue
driving.
generator Have
thefault remedied atan authorized Porsche
dealer.

iii
Failure
indicator Oil
pressure indicatorisfaulty.
Have thefault remedied atan authorized Porsche
dealer.

;;
Failure
Have
thefault remedied atan authorized Porsche
oil level dealer.
indicator

•
Failure
indicator Coolant
temperature gaugeisfaulty .
Have thefault remedied atan authorized Porsche
dealer.

ri1
Failure
indicator The
coolant temperature gauge,tacho-
meter orcruise control, etc.,could befaulty. Have
the fault remedied atan authorized Porschedealer.

Controls, Instruments