warning light PORSCHE 911 GT3 2004 5.G Service Manual

Brake Fluidlevel

I>
Please observe thechapter "EXERCISE EX-
TREME CAUTION WHENWORKING ONYOUR
VEHICLE" onPage 112.

I>
Use only new(unused) OriginalPorsche
brake fluid.
A

Warning!
Brake fluidishazardous toyour health, and
may befatal ifswallowed.
Brake fluidalsoattacks paintwork.

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Keep brake fluidoutofchildren's reach.

I>
Take carewhile topping offbrake fluidnotto
soil theluggage compartment oritems oflug-
gage .
Checking thebrake fluidlevel
The reservoir forthe hydraulic brakingsystems is
in the luggage compartment.

I>
Check thebrake·fluid levelregularly atthe
transparent reservoir.
The fluid level should always liebetween the"MIN"
and "MAX" marks.
A slight decrease inthe fluid level duetowear and
automatic readjustment ofthe disc brakes isnor-

mal.
If, however, thefluid level fallsmarkedly orbelow
the "MIN" mark, thebraking systemmayhave
developed aleak.

I>
Have thebraking systemchecked immediately
at an authorized Porschedealer. Changing
thebrake fluid
Brake fluidabsorbs moisture fromtheairover
time. Thisaccumulation ofwater lowers theboil-
ing point and,under certain operating conditions,
can affect thebraking action.
Therefore havethebrake fluidchanged inaccor-
dance withthechange intervals statedinthe
brochure "Maintenance".
• Warning lightUSA

G
Warning lightCanada
The brake-fluid warninglightsinthe instrument
panel andon-board computer indicate:
- brake-fluid leveltoolow,
- inconjunction withlarge pedal travel,
a braking-circuit failure.

If the warning lightsshould lightupwhile
driVing:

I>
Stop immediately inasuitable place.

I>
Donot continue driving.
Please havethefault remedied atyour nearest
authorized Porschedealer.
Maintenance, CarCare

19

Fuel

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

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

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Avoid contact withskinorclothing.

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Donot inhale fuelvapors.

To prevent damage tothe emission control
system andengine:

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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.

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Pull thering inthe right-hand dooraperture
(ar-

row).

l>l>l>

Maintenance, CarCare
21

Octane ratings

The CLC orAKI octane ratingisusually lowerthan
the RON rating:
For example: 95RON equals 90CLC orAKI
Unleaded
fuelsmaynotbeavailable outsidethe
continental U.S.andCanada. Therefore, werec-
ommend youdonot take your cartoareas or
countries whereunleaded fuelmay notbeavail-
able.
Octane ratingindicates afuel's ability toresist det-
onation. Therefore, buyingthecorrect octanegas
is important toprevent engine"damage".
The RON octane ratingisbased onthe research
method. TheCLC (U.S. CostofLiving Council oc-
tane rating) orAKI (antiknock index)octane rating
usually displayed onU.S. fuelpumps iscalculated
as research octanenumber plusmotor octane
number, dividedby2,that iswritten as:
Fuels
containing MMT

Some NorthAmerican fuelscontain anoctane en-
hancing additive calledmethylcyclopentadienyl
manganese tricarbonyl(MMT).

If
such fuels areused, youremission controlsys-
tem performance maybenegatively affected.
The check engine warning lightonyour instrument
panel mayturnon.

If
this occurs, Porsche recommends youstop us-
ing fuels containing MMT.
Portable FuelContainers

/!\
Danger!
Portable fuelcontainers, fullorpartially
empty, mayleakcausing anexplosion, orre-
sult infire incase ofan accident.

D>
Never carryadditional fuelinportable contain-
ers inyour vehicle.

Fuels
containing alcoholandether

Some areasofthe U.S. require oxygenated fuels
during certain portions ofthe year. Oxygenated fu-
els are fuels which contain alcohols (suchasmeth-
anol orethanol) orether (such asMTBE).
Under normal conditions, theamount ofthese
compounds inthe fuel willnot affect driveability.
You may useoxygenated fuelsinyour Porsche,
provided theoctane requirements foryour vehicle
are met. Werecommend, however,tochange to
a different fuelorstation
if
any ofthe following
problems occurwithyour vehicle:
- Deterioration ofdriveability andperformance.
- Substantially reducedfueleconomy.
- Vapor lockandnon-start problems, especially
at high altitude orathigh temperature.
- Engine malfunction orstalling.
R+M

-2-

or

RON+MON

2

Maintenance,CarCare
123

FuelEvaporation Control

Fuel tank venting
The evaporation chamberandthecarbon canister
prevent fuelfrom escaping tothe atmosphere at
extreme highoutside temperatures, whendriving
abruptly aroundcurvesandwhen thecar isparked
at an incline orinany other nonlevel position.
Vapor control systemandstorage
When thefuel tank isfilled, vapors arecollected in
the evaporation chamberbyavent lineleading the
vapors tothe carbon canister wheretheyare
stored aslong asthe engine doesnotrun.
Purge system
When theengine isrunning, thefuel vapors from
the canister willbemixed withfresh airfrom the
ambient airofthe canister. Thismixture willbe
directed tothe intake airhousing bythe tank vent
line, mixed withtheintake airand burned during
normal combustion.
Maintenance, CarCare
Washer
Fluid

The reservoir, withablue screw cap,isinthe lug-
gage compartment, tothe rear left.
Capacity
- Without headlight cleaningsystem:
approximately 3.2quarts (3liters).
- With headlight cleaningsystem:
approximately 6.1quarts (5.7liters). Clean
water isgenerally notenough toclean the
windshield andheadlights.
It is advantageous toadd awinter cleaner giving
antifreeze protection orasuitable summer clean-
er, depending onthe season. Followtheinstruc-
tions forthe mixing ratio.

\>
Donot use engine coolant anti-freeze orany
other solution thatcandamage thecar's paint,
in the washer reservoir.

\>
Please noteallthe information onthe container
of the cleaning agent.

e
Warning light
The warning lightsinthe instrument panelandon-
board computer lightwhen approximately 0.5liter
(0.52 quarts) isleft inthe reservoir.

Washing

The best method ofprotecting yourcarfrom the
damaging effectsofthe environment isfrequent
washing andtheapplication ofapreservative. The
underside ofyour vehicle shouldalsobewashed
thoroughly, atthe latest whensaltisno longer
spread onthe roads.
The longer salt,road dustandindustrial dust,
dead insects, birddroppings orsubstances from
trees (resin, pollen) areallowed toremain onthe
bodywork, themore serious istheir harmful ef-
fect.
New cars should bewashed carefully withplenty
of clear water toprotect thenew paint work. Dark
paint finishes showupthe smallest ofsurface
damage (e.g.,scratches) morereadily thanlighter
colors.
Dark colors arealso more susceptible toscratch-
ing because ofthe composition oftheir pigments
and require particularly carefulpaintcare.

D-
Donot wash yourcarinbright sunlight orwhile
the bodywork isstill hot.

D-
When washing byhand, useabundant water,a
soft sponge orwash brush, andPorsche car
shampoo.

D-
Begin byspraying thebody thoroughly withwa-
ter torinse away loose dirt.
D-

After washing, rinsethecarwith plenty ofwa-
ter and then drywith achamois leather.
Do not use thesame chamois leatherfordry-
ing asyou useforcleaning thewindshield and
windows.

/!\
Warning!
Moisture whichgetsontothe brakes during
a car wash canreduce braking efficiency or
make thebrakes pullunevenly whichcould
increase thedanger ofan accident, causing
serious personal injuriesordeath.

D-
Always applythebrakes afew times after
washing thecartotest braking efficiency and
dry the brake discs.
When doingthis,take care nottohamper other
road users behind you(traffic conditions per-
mitting),

Automatic carwashes

Optional add-onpartsorparts which project
beyond thecontours ofthe vehicle maybe
damaged bydesign features (e.g.brushes) ofau-
tomatic carwashes.
The
following partsareparticularly
susceptible todamage:

- Windshield wipers(always switchthemoffto
prevent themwiping unintentionally inintermit-
tent operation)
- External telephone antennas(alwaysunscrew)
- Roof Transport System(alwaysremove com-
pletely)
- Rear spoiler
- Wheels (thewider therimand thelower thetire
height, thegreater therisk ofdamage)
- High-gloss wheels(toprevent thesefromget-
ting scratched, donot clean withthewheel-
cleaning brushesofthe carwash).

D-
Please consult theoperator beforeusingauto-
matic carwashes.

D-
Wash anddrybyhand allpoints notreached by
a car wash, suchasdoor andlidseams or
door sills.

Note

Automatic carwashes spraywater atodd angles
and high pressures, whicharenotseen innormal
driving. Therefore, watercansometimes findits
way intothepassengers compartment duringor
shortly afterthecarwash.

D-D- D-

Maintenance, CarCare

A
Warning!
Danger offire and serious personal injuries.

t>
Donot apply additional undercoating orrust-
proofing onornear theexhaust manifold, ex-
haust pipes, catalytic converters orheat
shields. Duringdriving thesubstance usedfor
undercoating couldoverheat andignite.

t>
Before applying freshunderseal, carefullyre-
move deposits ordirt and grease. Onceithas
dried, thenew undercoating compoundforms
a tough protective coatingwhichprovides effi-
cient rust-proofing ofthe floor panels andcom-
ponents.

t>
Always applyafresh coating ofsuitable preser-
vative tounprotected areasaftercleaning the
underside ofthe body, thetransmission, the
engine orcarrying outrepairs tounder-body,
engine ortransmission components.
Effective rust-proofing isparticularly important
during thecold weather season.
If
your carisdriv-
en frequently inareas where salthas been spread
on the roads, thewhole engine compartment
should becleaned thoroughly afterthewinter to
prevent saltfrom causing anylasting damage. A
full under-body washshould alsobeperformed at
the same time.

134
Maintenance, CarCare
Door,
roof,lidand window seals

t>
Wash dirt(e.g. abrasion, dust,roadsalts) from
all seals regularly usingwarm soapy water. Do
not use anychemical cleaningagentsorsol-
vents.
When thereisafrost hazard, theouter doorseals
and thefront andrear lidseals canbeprotected
against freezing intoplace byasuitable careprod-
uct.

In order toprevent damage tothe anti-
friction coating, theinner doorseals must
not betreated withcare products.
Headlights,
lights,interior andexterior

plastic parts

t>
Use
only
clean water andalittle dishwashing
detergent toclean lightlenses, plastichead-
light lenses, plasticpartsandsurfaces.
Do not clean whendry.
Use asoft sponge orasoft, lint-free cloth.Gen-
tly wipe thesurface withoutapplying toomuch
pressure.
The Porsche insidewindow cleanerisalso suit-
able forcleaning plasticsurfaces. Followthe
cleaning instructions onthe container.
Never useother chemical cleanersor
solvents.

£>
Rinse cleaned surfaces withclear water.

Fabric, upholstery, carpetsand
floor-mats

I>
Use only avacuum cleaneroramedium stiff
brush.

I>
Remove stainsandspots withPorsche stain
remover.
The Porsche rangeofaccessories includesfloor-
mats toprotect thecarpets insummer andwinter.

A
Warning!
Risk ofan accident.

I>
Always checkthemovement ofthe pedals be-
fore driving andmake surethatthey arenot
obstructed byafloor-mat orany other object.

I>
Secure thefloor-mat toprevent itfrom sliding
into positions thatcould interfere withthesafe
operation ofyour vehicle -do not liethem
loosely inthe vehicle.
Your Porsche dealerwillbeglad tooffer you
floor-mats ofthe correct sizeincluding asecur-
ing possibility.

136
Maintenance, CarCare
Alcantara

I>
Donot use aleather careproduct toclean
Alcantara.
For regular careitis sufficient toclean thecover
with asoft brush.

Cleaning whenlightly soiled

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Wet asoft cloth withwater oraneutral soap
solution andwipe offthe dirt.

Cleaning whenheavily soiled

I>
Wet asoft cloth withlukewarm wateror
thinned whitespiritanddabthedirt from the
outside in.
Safety
belts

If itbecomes necessary toclean thebelts, you
can useanymild washing agent.
Allow thebelts todry prior toretracting, butavoid
direct sunlight.

I>
Only usesuitable cleaners.
If unsuitable cleanersareused orany attempt
is made todye orbleach thebelts, theweb-
bing maybeweakened andthus constitute a
safety risk.

Temperature A,8,C

The temperature gradesareA(the highest), Band
C, representing thetire's resistance tothe gener-
ation ofheat anditsability todissipate heatwhen
tested undercontrolled conditions onaspecified
indoor laboratory testwheel.
Sustained hightemperatures cancause themate-
rial ofthe tire todegenerate andreduce tirelife,
and excessive temperature canlead tosudden
tire failure.
The grade Ccorresponds toalevel ofperfor-
mance whichallpassenger cartires must meet
under theFederal MotorVehicle SafetyStandard

No. 109.

Grades Band Arepresent higherlevelsofperfor-
mance onthe laboratory testwheel thanthemini-
mum required bylaw.

A
Warning!

The temperature gradeforthis tireisestablished
for atire that isproperly inflatedandnotoverload-

ed.

Excessive speed,underinflation, orexcessive
loading, eitherseparately orincombination, can
cause heatbuildup andpossible tirefailure.
Tire
pressures

A
Warning!
Incorrect tirepressure causesincreased tire
wear andadversely affectsroadhandling.

I>
Always useanaccurate tirepressure gauge
when checking inflationpressures.

I>
Donot exceed themaximum tirepressure list-
ed onthe tire sidewall.
Please observe thechapter "VEHICLE IDENTI-
FICATION, TECHNICAL DATA"onPage 179.

I>
Cold tireinflation pressure means:alltires
must becold, ambient temperature maximum
68°F (20°C), whenadjusting theinflation pres-
sure.
Avoid sunlight strikingthetires before measur-
ing cold pressures, sincethepressures would
rise from temperature influence.

I>
Valve capsprotect thevalve fromdustand
dirt, andthus from leakage.
Always screwcapstightly down.
Replace missingcapsimmediately.

I>
Donot use commercially availablesealantor
tire inflating bottles.
Tire
traction

A
Warning!
When driving onwet orslushy roads,a
wedge ofwater maybuild upbetween the
tires andtheroad. Thisphenomenon is
known as"hydroplane" andmay cause par-
tial orcomplete lossoftraction, vehicle
control orstopping ability.
I>
Reduce speedonwet surface toprevent this.

Tire life

Tire lifedepends onvarious factors, i.e., road
surfaces, trafficandweather conditions, driving
habits, typeoftires andtirecare.

I>
Inspect yourtires forwear anddamage before
driving off.Ifyou notice uneven orsubstantial
wear, wheels mightneedalignment ortires
should bebalanced orreplaced.
Practical Tips,Emergency Service

Electrical System

In order toavoid damage andfaults inelectrical or
electronic systems,electrical accessories should
be installed atyour authorized Porschedealer.
~ Only useaccessories authorizedbyPorsche.

A
Warning!
Risk ofshort circuit andfire.
Replacing fusesorrelays withtheengine
running orthe ignition oncould cause elec-
trical shock.

~ Disconnected thebattery duringallwork on
the electrical system.
Please observe thechapter "BATTERY" on
Page 155.

Relays

Defective
relays
shouldbechanged onlybyan
authorized workshop.
Practical Tips,Emergency Service
Alann
system,
centrallocking

The status ofthe central locking andalarm system
is not changed bydisconnecting thebattery.
When thebattery isdisconnected, thealarm sys-
tem ceases tofunction.

Overload protection

If the central locking systemisoperated more
than tentimes within aminute, furtheroperation is
blocked for30seconds.
load
switch-off aftertwohours
or five days

If the ignition keyisremoved, loadswhich are
switched onorinstandby (e.g.power windows,
luggage compartment lighting,interiorlight,radio)
are automatically switchedoffafter approximately

2 hours.

If the vehicle isnot started orunlocked withthere-
mote control within
fivedays,
theremote control
standby function isswitched off(toprevent dis-
charging ofthe vehicle battery).
1. Inthis case, unlock thedriver's doorwiththe
key atthe door lock.
Leave thedoor closed inorder toprevent the
alarm system frombeing triggered.
2. Press button 1on the remote control.
The remote controlisnow activated again.

j!\
Warning!
Hydrogen gasgenerated bythe battery
could cause anexplosion, resultinginsevere
personal injuries.

c> Charge battery inawell ventilated area.
c> Never charge afrozen battery. Itmay explode
because ofgas trapped inthe ice. Allow afro-
zen battery tothaw outfirst.
c> Ifyou getelectrolyte, whichisan acid, inyour
eyes oron your skin, immediately rinsewith
cold water forseveral minutes andcalladoc-
tor.
Slow
battery charging

1. Pay attention toallwarnings andfollow instruc-
tions thatcome withyour battery charger.
2. When charging, ensureadequate ventilation.
3. Remove battery.
Please observe thechapter "REMOVING THE
BATTERY" onPage 158.
4. Allvent caps should beopen.
The fluid level should meettheindicator mark
in each cell.
5. Ensure thatcharger isswitched off-danger of
short circuit!
6. Connect chargercables.

Charger cablesmustbeconnected
POSITIVE
(+1
toPOSITIVE
(+)
and
NEGATIVE (-)toNEGATIVE
(-I.

7. Switch oncharger.
Normally, abattery shouldbecharged atno
more than10percent ofits rated capacity.
Rated capacity ofthe battery inyour vehicle is
listed onthe battery housing.
8. After charging, turnoffcharger anddiscon-
nect charger cables.
9. Tighten thevent caps andreinstall battery
Please observe thechapter "INSTALLING THE
BATTERY" onPage 158. Winter
operation
During thewinter months, batterycapacity tends
to decrease astemperatures drop.
Additionally, morepower isconsumed whilestart-
ing, andtheheadlights, heater,rearwindow de-
fogger, etc.,areused more frequently.
c> let your Porsche dealertestthebattery's
capacity beforewintersetsin.
Replacing battery
The service lifeofthe battery issubject tonormal
wear; itdepends graetlyoncare, climatic condi-
tions, anddriving conditions (distances, loads).
c> Only useanoriginal Porsche battery,withthe
correct partnumber, asareplacement.
c> Please observe thedisposal instructions for
batteries.

c>c>c>

Practical Tips,Emergency Service