2004 PORSCHE 911 GT3 automatic speed control

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.

A-
Automatic speedcontrol readiness off/on

1 -
Hold andstore/accelerate

2 -
Decelerate/resume

3 -
Interrupt
Automatic SpeedControl

The automatic speedcontrol maintains any
selected speedbetween 25mph and120 mph
(40 km/h and200 km/h) without youhaving to
use theaccelerator.
The automatic speedcontrol isoperated withthe
lever onthe steering wheel.
Controls, Instruments
/!\

Warning!
A constant speedmaynotbesafe inheavy
traffic, oron winding orslippery roads.
With thespeed control systemengaged, the
engine speedwillnotreturn toidle when re-
moving thefoot from theaccelerator pedal.

~ Donot use thespeed control whenitmay be
unsafe tokeep thecar ataconstant speed.
~ Observe alllocal andnational speedlimits.

Switch automatic speedcontrol
readiness on

~ Press button Aon the automatic speedcontrol
lever.
Thisgreen indicator lightinthe
speedometer nowindicates readiness
Hold
andstore speed

~ Bring thecartothe desired speedwiththe
accelerator.
~ Then pushoperating leverforward 1briefly.

Accelerating (e.g.toovertake)

~ Increase speedasusual withtheaccelerator.
When theaccelerator isreleased, thepreviously
saved valueisagain set.
Automatic speedcontrol operation isautomatical-
ly interrupted, however,ifthe speed isincreased
by more thanabout 16mph (25km/h) forlonger
than 20seconds,
or:

~ Press
operating lever
forward 1until thede-
sired speed isreached.
The speed reached ismaintained andstored
when thelever isreleased.
Speed canbecorrected insteps of2km/h (ap-
prox. 1mph) by
briefly
pushing thelever forward
or down (upto10 times).

Decelerating

c>
Press operating leverdown 2until thedesired
speed isreached.
The speed reached ismaintained andstored
when thelever isreleased.
Speed canbecorrected insteps of2km/h (ap-
prox. 1mph) by
briefly
pushing thelever forward
or down (upto10 times).

Interrupting automaticspeedcontrol
operation

c>
Pull operating leverbriefly towards thesteer-
ing wheel
3
or:

c>
Operate brakeorclutch pedal.
The speed driven before theinterruption
remains storedinthe memory.

Automatic speedcontrol operation is
interrupted automatically:

- Ifthe setspeed isexceeded bymore than
16 mph (25kmjhl forlonger than20seconds,
- ifthe actual speedfallsto6mph (10kmjhl be-
low the setvehicle speedforlonger than5sec-
onds (upward slopes).
Resuming
thestored speed

c>
Press operating leverbriefly down2.
The stored speedshould onlybecalled upwhen
traffic conditions andtheroad surface sopermit.

Switching automatic speedcontrol
readiness off

c>
Press button Aon the automatic speedcontrol
lever.
The green readiness lightinthe speedometer
goes off.
When thevehicle isparked andtheignition
switched off,thememory iscleared.
Important
note

On upward ordownward slopes,thesetspeed
cannot alwaysbemaintained bythe automatic
speed control.
To obtain sufficient enginebraking orabetter en-
gine-speed range,therefore, youhave toselect a
lower gear.
Controls,Instruments

A

Automatic AirConditioning

The air-conditioning systemcontrols theprese-
lected interior temperature completelyautomati-
cally.
If necessary, theautomatic systemcanbemanu-
ally operated.

Left display panel-

Temperature andactive functions

Right display panel-

Blower speedandactive functions
Controls, Instruments
B

Automatic operation

c>
Press
"auto"
button.
Air quantity anddistribution areautomatically
controlled, andvariations arecompensated.
All automatic settingfunctions canbeindividually
changed.
This setting isretained untiltheappropriate func-
tion button ispressed againorthe
"auto"
button
is pressed.
A
-
Temperature setting

c>
Press theappropriate button.
To suit personal comfort, theinterior temperature
can beselected between 65°Fand84°F/18°C
and 29°C.

Recommendation: ]2°F
j22°C.

If the display "LO"or"HI" appears, thesystem is
operating atmaximum coolingorheating power.

Note
If the preselected temperature ischanged, the
blower speedcanincrease automatically inauto-
matic operation.
The desired temperature isreached morequickly
this way.

\qV
Defrosting thewindshield

po
Press button.
Windshield isdemisted ordefrosted asquickly
as possible.
Air flows tothe windshield only.

{} Switching compressor forair-
conditioning systemonoroff

Whenever outsidetemperatures exceed
3JDFj

3°C, theair-conditioning compressorisalways
switched oninautomatic operation.
The compressor canbeswitched offtosave fuel,
but control comfort isthen limited .

po
Press button .
The compressor isswitched off,thesymbol in
the left-hand displaygoesout.

po
Ifthe interior temperature istoo high, switch
compressor backonorpress
"auto"-button.

To dry incoming airindamp weather, donot
switch offthe air-conditioning compressor.
This prevents mistingofwindows.
B
-
Adjusting blowerspeed

po
Press theappropriate button.
Preset blower speedisincreased orde-
creased, and"Manual" appearsinthe right-
hand display field.
The speed stages areindicated bya
bar display.
The speed stages areindicated byabar display.
If the minus button ispressed atthe lowest blower
stage, theblower andautomatic controlare

switched off.

"OFF" isdisplayed inthe left-hand display.
Pressing onthe plus button orthe
"auto"
button
switches theblower andautomatic control
back
on again.
Circulating-air
setting

A
Warning!
Risk ofaccident duetohampered vision.
In circulating-air setting,thewindows can
mist up.

po
Only select circulating-air settingforshort
periods.

po
Ifwindows mistup,turn offthe circulating-air
setting bypressing thecirculating-air button
briefly andselect thefunction
"Defrost windshield".

• _) Switching circulating-air setting
..•. onoroff

po
Press button.
The outside-air supplyisinterrupted andonly
the inside airiscirculated.

Over approx. 37°Fj3°C

If the air-conditioning compressorwasoff,it
switches onautomatically. Theduration ofcircu-
lating-air modeisnot limited.

Below approx. 37°Fj3°C

The air-conditioning compressorisswitched off.
Circulating-air modeisautomatically endedafter
approx. 3minutes.

popopo

Controls, Instruments

RoofTransport System

Follow theseparate instructions forfitting
the Roof Transport System.

Fitting commercially availableluggageracksis

not
possible.
The
Porsche RoofTransport System
allowsthe
transport ofvarious sportsandhobby equipment.
Your authorized Porschedealerwillbepleased to
inform youabout themany usesofthe Roof Trans-
port System.
Controls, Instruments
A

Warning!
Risk ofan accident, lossofcontrol anddam-
age tothe vehicle.

c>
Completely removetheRoof Transport Sys-
tem before usinganautomatic carwash.

c>
Fitthe side support elements ofthe basic car-
rier only inconjunction withthetransverse sup-
porting pipes.

c>
The permissible useableloadof165 Ibs
(75 kg), thepermissible totalvehicle weight
and thepermissible axleloads mustnotbe
exceeded. Please observe thechapter "WEIGHTS" on
Page 186.
Items ofluggage mustnotproject substantially
beyond theside ofthe load area.
Distribute loadevenly, withheavy itemsaslow
as possible.
Every itemmust befixed andsecured tothe
basic carrier witharope orlashing strap(do
not use elastic rubbertensioners).

c>
Before everyjourney, andatregular intervals
during longtrips, check thatRoof Transport
System andload aresecure.
Retighten ifnecessary andsecure additionally
by locking.
c>

Inthe loaded state,adjust maximum speedto
the nature, sizeandweight ofthe load being
carried.
In no case, however, shouldyoudrive atmore
than 90mph (140 km/h).

c>
With thebasic carrier installed andnoload, do
not exceed amaximum speedof110 mph
(180 km/h) sincedriving stability willbead-
versely affected.
Adapt yourdriving styleandspeed tothe
changed conditions.
Nevertheless, Porscherecommends thatyou
do not exceed theposted speedlimit.

c>
Driving, brakingandsteering behavior ofthe
vehicle change duetothe higher center of
gravity andthegreater wind-resistant area.
You should adaptyourdriving styleappropri-
ately.

Note

Since fuelconsumption andnoise areincreased
with theRoof Transport Systeminstalled, itshould
not remain onthe car ifit is not inuse.

Fuel

j!\
Warning!
Fuel ishighly flammable andharmful to
health.

l>
Fire, open flame andsmoking areprohibited
when handling fuel.

l>
Avoid contact withskinorclothing.

l>
Donot inhale fuelvapors.

To prevent damage tothe emission control
system andengine:

l>
Never drivethetank completely outoffuel.

l>
Avoid highcornering speedsafterthewarning
lights havecome on.

l>
Please observe thechapter "EMISSION CON-
TROL SYSTEM" onPage 124.
Please observe thechapter "FUELECONOMY"
on Page 120.
Please observe thechapter "LEVELGAUGE"
on Page 63.

Check engine warning light

If the warning lightsinthe instrument panelandon-
board computer comeonand remain onwhile
driving, itsuggests:
- animproperly fastenedtankcap
or

- refuelling withengine running.
Opening
thefiller flap

The filler opening isunder thefiller flapinthe front
right fender.

l>
With thevehicle unlocked, pressonthe front
part ofthe filler flap
(arrow)
toopen theflap.
The filler flapiscentrally lockedalongwiththeoth-
er locks.
If
there isadefect inthe automatic unlocking
system:

l>
Open thepassenger door.

l>
Pull thering inthe right-hand dooraperture
(ar-

row).

l>l>l>

Maintenance, CarCare
21

Index

A

ABS (antilock brakesystem) 44,45,54,56
Warning light 54,56
Acoustic warningsignal. 69
Aerodynamic components 9
Air compressor 100
Air conditioning system 90
Air distribution 88,90
Air filter 128
Airbag 38,39
Switching offpassenger airbag 36
Warning light 54,56
Alarm System 24,107
Alcantara 136
Antenna 107,131
Antifreeze 113
Antilock brakesystem (ABS) 44,45
Ashtray 94
Assembly aidsforwheel changes 150
Audio operation 105,106
Auto-button airconditioning system 90,91
Automatic
Airconditioning 90
Car washes 131
Door locking 21
Headlight adjustment... 82
Locking retractor 34
Speed control 54,56,58,86, 87
Average consumption 68
Average speed 68,72

190
Index
B

Backrest Adjustment 30
Release 30,31
Battery 100,155
Warning light.. 54,56,58
Before driving off 14,15
Belt tensioner 32
Belts 32,136
Warning light... 54,56
Blower adjustment 88,90, 93
Brakes 40,119
Distribution warninglight... 54,56
Fluid 119,185
Fluid level 54,56
Fluid warning light 119
Lights 165,171
Pad wear warning light 54,56
Pads 16,43
Parking brakewarning light... 54,56
Break inhints 16
Bulbs Chart 163
Replacing 162

C

Canholder 95
Capacities, overview 185
Car care 130
Car washes 131Cassette
tape
Holder 97
Player
l
06
Catalytic converters 125
Cautions 112,140
Central locking 22
emergency operation 23
Changing wheels 150
Check engine
Warning light.. 54,56,66
Child restraint
Anchorages ,35
Switching offpassenger airbag 37
Syste m 36
Cigarette lighter 94
Circulating airbutton 91
Circulating airsetting 89,91
Clock 54,56,64
Clothes hook 96
Clutch pedal .40
Compact disc
Changer 106
Holder 97
Player
l
06
Compartment monitoring 24
Compressor 91,92
Coolant 62,113
Level 113
Temperature gauge 62
Warning light 62
Cooling system 62,113