2004 PORSCHE 911 GT3 cooling

Power transmission

The differential lock,which wasdesigned foruse
in motor sport,maymake aslight noisewhen
maneuvering andontight corners.

Porsche Ceramic Composite Brake
IPCCB)

The high-performance brakesystem isdesigned
for optimal braking effectatall speeds andtem-
peratures. Certainspeeds, brakingforcesandam-
bient conditions (suchastemperature andhumid-
ity) therefore mightcause brakenoises.
Wear onthe different components andbraking
system, suchasbrake padsorbrake discs,
depends toagreat extent onthe individual driving
style andtheconditions ofuse andtherefore
cannot beexpressed inactual milesonthe road.
The values communicated byPorsche arebased
on normal operation adaptedtotraffic. Wearin-
creases considerably whenthevehicle isdriven
on race tracks orthrough anaggressive driving
style.

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Please consult yourauthorized Porschedealer
about thecurrent guidelines
in
effect before
such useofyour vehicle.
Aerodynamic
components

To benefit fromthehigh driving performance with-
out impairing thedriving safetyorthe service life
of the vehicle components, certainvehicle parts
must bealways fullyoperational whiledriving.

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Regularly checkyourvehicle forsigns ofdam-
age.
Damaged, wornormissing aerodynamic com-
ponents suchasspoilers orunderside panels
affect driving behaviour andmust therefore be
replaced immediately.
To optimise thecooling ofthe PCCS brakediscs,
large airbrake spoilers arefitted tothe front and
rear running gearcontrol arms.
If these air-brake spoilersarenotfitted andthere
is ahigh thermal demand onthe braking system,
the service lifeofthe PCCS brakediscscould be
reduced.
The aerodynamic stabilityofthe vehicle isinflu-
enced considerably athigh speeds bythe front lip.
Due tothe small ground clearance requiredforthe
optimisation ofthe driving behaviour, thefront lip
and theair-brake spoilershavetobe placed inex-
posed positions tofulfil their function. Theycanbe
damaged, forexample byground orcurbstone
contact.
Ground
clearance

Please bear
in
mind thelimited ground clearance
of your caronuneven surfaces, whenparking
(curbs), onramps, liftingplatforms, etc.

Seating
Your carhas two seats.
The area behind theseats isnot intended forpas-
sengers.

A
Danger!
Severe personal injuryordeath canresult in
the event ofan accident.

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Never allowanyone tosit inthe area behind the
seats.

Beforedrivingoff.. 14
Break inhints forthe first
1,000 miles/1,600 kilometers 16
Keys 19
Security WheelBolts 19
Doors 21
Central Locking 22
Alarm System, InfraredPassenger
Compartment Monitoring 24
Power Windows 26
Inside mirror 28
Rear View Mirrors 28
Rear Window Defogger,
Door Mirror Heating 29
Seat Adjustment 30
Steering WheelAdjustment.. 31
Safety Belts 32
Child Restraint Anchorages 35
Child Restraint Systems 36
Airbag Systems 38
Clutch Pedal 40
Parking Brake 40
Brakes 41
ABS Brake System
(Antilock BrakeSystem) 44
Interior lights 46
Footwell Lights 47
Operation, Instruments 48
Ignition/Starter Switchwith
anti-theft SteeringLock 50
Starting Procedures 52
Stopping Engine 53Instrument
PanelUSAModels 54
Instrument PanelCanada Models 56
Voltmeter 58
Automatic SpeedControl 58
Instrument Illumination 59
Trip Odometer 59
Speedometer 60
Changing overbetween
Miles /Kilometers 60
Tachometer 61
Turn Signal Indicator Light 61
High Beam 61
Cooling System 62
Fuel 63

C~k ~

Engine OilPressure 65
Check Engine
Warning Light 66
On-Board Computer (BC) 67
Warnings inthe Instrument Panelandinthe On-
Board Computer 75
Emergency FlasherSwitch 81
Light Switch 82
Automatic HeadlightBeamAdjustment 82
Turn Signal /
Headlight Dimmer/Flasher Lever 83
Windshield Wiper/Washer Lever 84
Automatic SpeedControl 86
Heating andVentilation 88
Automatic AirConditioning 90
Central andSide Vents 93
Fresh-air Intake 93Controls,
Instruments
Ashtray 94
Cigarette Lighter 94
Cupholder 95
Storage inthe Passenger Compartment 96
Luggage Compartment Lidand
Engine Compartment Lid 98
Luggage Compartment.. 100
Trunk Entrapment 101
Sun Visors 103
Spoiler, SideMember Panels 104
Car Audio Operation/Tips 105
Car Telephone and
Aftermarket Alarms 107
Roof Transport System 108
Gearshifting 109
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.

_LCooling System

Temperature gauge(ignition on)
USA: Display in
of

Canada: Displayin°C

Pointer tothe left-
engine cold

c>
Avoid highengine speeds andheavy engine
loading.
Controls, Instruments
Pointer
inthe middle -
normal operating tem-
perature
The pointer maymove uptothe redarea when en-
gine isheavily loadedandoutside temperature is
high, butshould returnto"normal" whenengine
load isreduced.
Warning light"A"

If
the
coolant temperature
istoo high, thewarn-
ing light
comes on.

Additionally, awarning isdisplayed inthe on-board
computer.

c>
Pull offthe road, turnoffthe engine andallow
to cool.

c>
Check radiator andairpassages infront endof
car forobstructions.

c>
Check coolant level.
If necessary, addcoolant andhave faultreme-
died atan authorized Porschedealer.

Please observe thechapter
"COOLANT
LEVEL"
ONPAGE 113.
Note

To prevent excessive temperatures, thecooling-
air passages mustnotberestricted bycoverings
(e.g. films, "stone guards").
If

the
coolant level
istoo low, thewarning light

flashes.

Additionally, awarning isdisplayed inthe on-board
computer.

c>
Switch engineoffand allow tocool.

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Add coolant.

c>
Have thecause ofthe fault remedied atan au-
thorized Porschedealer.

Please observe thechapter
"COOLANT
LEVEL"
ONPAGE 113.

/!\
Caution!
Risk ofengine damage.

c>
Ifthe warning lightscome oneven though cool-
ant level iscorrect, donot continue driving.

c>
Have thefault remedied atthe nearest
authorized Porschedealer.
Engine compartment blowerfan
In addition, thiswarning light
flashes
toindicate a
fault inthe
engine compartment blowerfan.

c>
Have thecause ofthe fault remedied atan
authorized Porschedealer.

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.

Q
Airdistribution tofootwell

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Press button.
The airflows tothe footwell.

Air distribution tothe
central andside vents

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Press button.
The airflows fromthecentral andside vents.
Vents mustbeopen.

Air distribution to
windshield

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Press button.
The airflows tothe windshield.
Controls, Instruments
General
instructions for
air-conditioning compressor

Can switch offbriefly ifengine isunder anex-
treme loadtoensure sufficient enginecooling.
- Switches offautomatically attemperatures be-
low
3rF
j3°C
andcannot beswitched on,
even manually.
- Operates mosteffectively withwindows
closed. If the carhas been inthe sun foralong time,
however, itis agood ideatoventilate theinte-
rior briefly withdoor windows open.
- Depending onthe outside temperature andhu-
midity, condensation candrip from theevapo-
rator andform apool under thecar.
This isnormal andnotasign ofleakage.
- Ifuncooled airflows outwhen thelowest tem-
perature hasbeen set,switch offthe air-condi-
tioning compressor andconsult withanautho-
rized Porsche dealer.

Coolant Level

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Please observe thechapter "EXERCISE EX-
TREME CAUTION WHENWORKING ONYOUR
VEHICLE" onPage 112.
The cooling systemisfilled atthe factory witha
permanent coolant.
It provides year-round protectionfromcorrosion
and freezing downto-31°F
I-35°C
(Nordiccoun-
tries -40°F/-40°Cl.

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Only useantifreeze authorized byPorsche.
Checking
coolantlevel

The expansion tankwithitsfiller orifice isinthe en-
gine compartment.

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Check thecoolant levelregularly throughthe
transparent expansiontank.
When theengine iscold andthecar islevel the
fluid level must liebetween the"MIN" and"MAX"
markings.

Topping offcoolant

/!\
Warning!
Danger ofserious personal injuryfromscald-
ing. Coolant ishazardous toyour health, and
may befatal ifswallowed.

l>
Donot open thecap ofthe expansion tank
while theengine ishot.

I>
Allow theengine tocool down before opening
the cap andprotect yourhands, armsandface
from anypossible escapeofhot coolant.

l>
Keep coolant outofchildren's reach.

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Also, keepcoolant awayfromyourpets.
They canbeattracted toitshould therebea
spill, ortoused coolant leftinan open contain-
er. Coolant canbedeadly topets ifconsumed. 1.
Switch engineoffand letitcool.
Please observe thechapter "COOLING SYS-
TEM" onPage 62.
2. Cover theexpansion tankcapwith athick rag.
Open capslowly andcarefully andallow over-
pressure toescape.
Then unscrew capcompletely.
3. Only addamixture ofantifreeze andwater in
equal parts, anddonot exceed the"MAX"
mark.

Antifreeze incoolant:

50% gives protection downto
-31°F/-35°C

60% gives protection downto-58°F
I-50°C

4. Screw capfirmly on.
If in an emergency purewater hasbeen added,
the mix ratio must becorrected atan authorized
Porsche dealer.
Marked lossofcoolant indicates leakageinthe
cooling system.
The cause should immediately beremedied atan
authorized Porschedealer.
Maintenance, CarCare
113