fuel consumption PORSCHE 911 CARRERA 2003 4.G Owners Manual

Breakinhintsforthefirst

2,000
miles/3,000kilometers
Thefollowingtipswillbehelpfulinobtainingopti-
mumperformancefromyournewPorsche.
Despitethemostmodern,high-precisionmanu-
facturingmethods,itcannotbecompletely
avoidedthatthemovingpartshavetowearin
witheachother.Thiswearing-inoccursmainlyin
thefirst2,000miles/3,000km.
Therefore:
t>Preferablytakelongertrips.
t>Avoidfrequentcoldstartswithshort-distance
drivingwheneverpossible.
t>Avoidfullthrottlestartsandabruptstops.
t>Donotexceedmaximumenginespeedof
4,200rpm(revolutionsperminute).
t>Donotrunacoldengineathighrpmeitherin
Neutraloringear.
t>Donotlettheenginelabor,especiallywhen
drivinguphill.Shifttothenextlowergearin
time(usethemostfavorablerpmrange).
t>Neverlugtheengineinhighgearatlow
speeds.Thisruleappliesatalltimes,notjust
duringthebreak-inperiod.
14Controls,Instruments
t>Donotparticipateinmotorracingevents,
sportsdrivingschools,etc.duringthefirst
2,000miles/3,000kilometers.
Theremaybeaslightstiffnessinthesteering,
gear-shiftingorothercontrolsduringthebreak-in
periodwhichwillgraduallydisappear.
Breakinbrakepads
Newbrakepadsanddiscshavetobe"broken
in",andthereforeonlyattainoptimalfriction
whenthecarhascoveredseveralhundredmiles
orkm.
Theslightlyreducedbrakingabilitymustbe
compensatedforbypressingthebrakepedal
harder.Thisalsoapplieswheneverthebrake
padsandbrakediscsarereplaced.
Newtires
Newtiresdonothavemaximumtraction.They
tendtobeslippery.
t>Breakinnewtiresbydrivingatmoderate
speedsduringthefirst60to120miles/lOO
to200km.Longerbrakingdistancesmustbe
anticipated.
Engineoilconsumption
Duringthebreak-inperiodoilconsumptionmay
behigherthannormal.
Asalways,therateofoilconsumptiondepends
onthequalityandviscosityofoil,thespeedat
whichtheengineisoperated,theclimateand
roadconditions,aswellastheamountofdilu-
tionandoxidationofthelubricant.
t>Makeahabitofcheckingengineoilwithevery
fuelfilling,addifnecessary.

Functionsanddisplaypossibilities
A-Selectionfield
B-Continuationarrowsymbol
C-
Topdisplay
D-Centraldisplay
E-On-boardcomputerdisplay
Basicsetting
-Topdisplay:Odometer
-Centraldisplay:Tripodometer
Youcanchangebothdisplaystosuityour
requirementsbyusingthe"SET"menu.
Callingon-boardcomputerfunctionsin
display
"E"
I>Pushoperatingleverupordown
(selectionfieldAmustbeswitchedoff).
Thefollowingdisplayscanbecalledstepby
step:
-Outsidetemperature
(OF),
-Averagespeed(0mph),
-Averageconsumption(0mpg),
-Rangeonremainingfuel(mi--+a-),
-Navigationinformation
(ifactivatedinthe"SET"menu).
Canadavehicles:
Theunitsintheon-boardcomputeraredis-
playedinkilometers,litersand°C.
Thevalues"Tripodometer","Averagespeed"
and"Averageconsumption"canberesettozero
usingthe"BC"menu.
Note
Pullingtheoperatinglevertotherear4takes
youdirectlyfromavaluewhichcanberesetto
the"BC"menu.
Switchingselectionfield
"A"onoroff
I>Pushoperatingleverforwardorback.
Arrowsymbol"B"forcontinuation
ArrowsymbolV:
I>Pushoperatingleverdowninordertocon-
tinuethemenu.
Arrowsymbol~:
I>Pushoperatingleverupinordertocontinue
themenu.
I>I>I>
Controls,Instruments
83

..
SET"
Basicsettingofon-boardcomputer
Switchingonselectionfield

"A"
[>
Pushoperatingleverforward.

Changingthebasicsettingoftheon-board
computer
[>

Select"SET"withtheoperatinglever.

[>

Pushoperatingleverforward.
SET
[>
Selectthedesiredfunctionwiththeoperating
lever:

Reset
-
Resetall,
Resettripcounter,
Resetaverageconsumption,
Resetaveragespeed

Speedometerkm/mls
-
Changeoverbetweenkilometresandmiles

Display
(Individualcombinationofupperand
centrallinesoftheon-boardcomputer)
-
Changingtopdisplay
-Totalmileage
-Tripcounter
-Audioinformation(setradiostation)
-Outsidetemperature
-Rangeonremainingfuel
-Averagespeed
-Averageconsumption

-
Changingcentraldisplay
-Totalmileage
-Tripcounter
-Outsidetemperature
-Rangeonremainingfuel
-Averagespeed
-Averageconsumption

[>[>[>

Controls,Instruments
89

Navigation

-Integratedintheon-boardcomputer
(navigationinstructionscanberecalledinthe
on-boardcomputerdisplay)
-Forallturns
(navigationinstructionsaredisplayedonly
priortodirectionchanges)

"OFF"
On-boardcomputerdisplay
Switchingonselectionfield

"A"
[>
Pushoperatingleverforward.

Basicsetting

-Restorethebasicsettingoftheon-board
computer

Language
-
Selectlanguageversion

Consumption
-
Selectunitforfuelconsumption:
1/100km,mis/gal(USA),mpg(UK),km/l
[>Pushoperatingleverforward.
Displayisswitched
off.
Switchingon-boardcomputerdisplayon
again
Temperature
-
Selectunitfortemperature:
°C,
of
[>
Pushoperatingleverinanydirection.

12/24hmode

Selecttimemode:
12h,(smallsquaresontheleftsideofthetime
displayfor
AMIPM),

24h
90Controls,Instruments

Switchingon-boardcomputerdisplayoff
[>

Select"OFF"withtheoperatinglever.

Generalinformationregardingthe
on-boardcomputerfunctions
Rangeonremainingfuel
Therangeonremainingfueliscontinuously
recomputedwhiledrivingbasedonfuellevel,
currentconsumptionandaverageconsumption.
Themorethefuellevelfalls,themoresponta-
neouslythedisplayreacts.Forthisreason,
rangeonremainingfuelisnotdisplayedifless
than15kilometres(9miles).
Ifthevehicle'sinclinationchangeswhiledriving
orrefuelling,incorrectrangeinformationmay
temporarilybegiven.
Note
Ifthetankisnearlyemptyandyouaddonlya
smallquantityoffuel,thiscannotbeusedto
calculatetherangeonremainingfuel.

Averageconsumptionandaveragespeed

Thedisplayedvaluesarebasedonthedistance
travelledsincethelastresetto"zero".
Youcansetthestartingtimeforameasurement
beforeorduringthetrip.
Switchingtheignitionoffdoesnotresetthe
measurements.Valuescanthusbecollected
overlongperiods.
Disconnectingthecarbatteryclearsthese
memories.
Outside
temperature
The
outsidetemperaturedisplaydoesnotindi-
cate,ificeisontheroad.
Evenifatemperatureabove32°F(O°C)isdis-
played,icemaystillformontheroad,forin-
stanceonbridgesorwhentheroadpasses
throughaheavilyshadedarea.
Controls,Instruments
91

RoofTransportSystem
Followtheseparateinstructionsforfitting
theRoofTransportSystem.
Fittingcommerciallyavailableluggageracksis
notpossible.
ThePorscheRoofTransportSystemallows
thetransportofvarioussportsandhobbyequip-
ment.
YourauthorizedPorschedealerwillbepleased
toinformyouaboutthemanyusesoftheRoof
TransportSystem.
166MobileRoofs
/!\Warning!
Riskofanaccident,lossofcontroland
damagetothevehicle.
I>CompletelyremovetheRoofTransportSys-
tembeforeusinganautomaticcarwash.
I>Donotoperatetheconvertibletopwhenthe
basiccarrierisinstalled.
I>Fitthesidesupportelementsofthebasiccar-
rieronlyinconjunctionwiththetransverse
supportingpipes.
I>Thepermissibleuseableloadof165Ibs(75
kg),thepermissibletotalvehicleweightand
thepermissibleaxleloadsmustnotbeex-
ceeded.
Seethechapteron"Weights".
Itemsofluggagemustnotprojectsubstan-
tiallybeyondthesideoftheloadarea.
Distributeloadevenly,withheavyitemsas
lowaspossible.
Everyitemmustbefixedandsecuredtothe
basiccarrierwitharopeorlashingstrap(do
notuseelasticrubbertensionersJ.
I>Beforeeveryjourney,andatregularintervals
duringlongtrips,checkthatRoofTransport
Systemandloadaresecure.
Retightenifnecessaryandsecureadditionally
bylocking.
I>Intheloadedstate,adjustmaximumspeedto
thenature,sizeandweightoftheloadbeing
carried.
Innocase,however,shouldyoudriveat
morethan90mph
(140
kmjhJ.
I>Withthebasiccarrierinstalledandnoload,
donotexceedamaximumspeedof110mph
(180kmjh)sincedrivingstabilitywillbead-
verselyaffected.
Adaptyourdrivingstyleandspeedtothe
changedconditions.
Nevertheless,Porscherecommendsthatyou
donotexceedthepostedspeedlimit.
I>Driving,brakingandsteeringbehaviorofthe
vehiclechangeduetothehighercenterof
gravityandthegreaterwind-resistantarea.
Youshouldadaptyourdrivingstyleappropri-
ately.
Note
Sincefuelconsumptionandnoiseareincreased
withtheRoofTransportSysteminstalled,it
shouldnotremainonthecarifitisnotinuse.

Engine-compartment
blower,

radiatorfan
Theradiatorandradiatorfansareinthefrontof
thecar.
Theengine-compartmentblowerismountedon
theenginecompartmentlid.
/?\.Warning!
Riskofinjury.
Aftertheengineisswitchedoff,theengine-
compartmentandcoolanttemperaturesare
monitoredforapprox.20minutes.
Duringthisperiod,anddependingontem-
perature,theengine-compartmentblower
andradiatorfansmaycontinuetorunor
starttorun.
I>Carryoutworkintheseareasonlywiththe
engineoffandexerciseextremecaution.
170Maintenance,CarCare
EngineOil
Engineoilconsumption
Itisnormalforyourenginetoconsumeoil.
Therateofoilconsumptiondependsonthe
qualityandviscosityofoil,thespeedatwhich
theengineisoperated,theclimate,roadcondi-
tionsaswellastheamountofdilutionandoxida-
tionofthelubricant.
Ifthevehicleisusedforrepeatedshorttrips,
andconsumesanormalamountofoil,theen-
gineoilmeasurementmaynotshowanydropin
theoillevelatall,evenafter600miles(1000
km)ormore.Thisisbecausetheoilisgradually
becomingdilutedwithfuelormoisture,makingit
appearthattheoillevelhasnotchanged.
Thedilutingingredientsevaporateoutwhenthe
vehicleisdrivenathighspeeds,asonanex-
pressway,makingitthenappearthatoilisex-
cessivelyconsumedafterdrivingathighspeeds.
Iftheconditionsyoudriveyourvehicleinare
dusty,humid,orhot,thefrequencyoftheoil
changeintervalsshouldbegreater.
Ifthevehicleisdrivenatahighrateofspeed,
climaticconditionsarewarm,andtheloadis
high,theoilshouldbecheckedmorefrequently,
asdrivingconditionswilldeterminetherateof
oilconsumption.
-Theengineinyourvehicledependsonoilto
lubricateandcoolallofitsmovingparts.
Therefore,theengineoilshouldbechecked
regularlyandkeptattherequiredlevel.
-Makeitahabittohavetheengineoillevel
checkedwitheveryfuelfilling.
-Theoilpressurewarninglightisnotanoil
levelindicator.
Theoilpressurewarninglightindicates
seriousenginedamagemaybeoccuring
whenlit,ifenginerpmisaboveidlespeed.

FuelEconomy
Fueleconomywillvarydependingon
where,whenandhowyoudrive,optional
equipmentinstalled,andthegeneralcondi-
tionofyourcar.
Acartunedtospecificationsandcorrectly
maintained,willhelpyoutoachieveoptimal
fueleconomy.
I>Haveyourvehicletunedtospecifications.
Aircleanershouldbedirtfreetoallowproper
engine"breathing".
Batteryshouldbefullycharged.
Wheelsshouldbeproperlyaligned.
Tiresshouldbeinflatedatcorrectpressure.
I>Alwaysmonitoryourfuelconsumption.
I>Drivesmoothly,avoidabruptchangesin
speedasmuchaspossible.
I>Avoidjackrabbitstartsandsuddenstops.
I>Donotdrivelongerthannecessaryinthe
lowergears.Shiftingintoahighergearearly
withoutluggingtheenginewillhelpsavefuel.
I>Prolonged"warmup"idlingwastesgas.Start
thevehiclejustbeforeyouarereadytodrive.
Accelerateslowlyandsmoothly.
I>Switchofftheengineifstationaryforlonger
periods.
I>Anyadditionalweightcarriedinthevehiclere-
ducesfueleconomy.Alwayskeepcargotoa
minimumandremoveallunnecessaryitems.
I>Organizeyourtripstotakeinseveralerrands
inonetrip.
I>Allelectricalaccessoriescontributetoin-
creasedfuelconsumption.
I>Onlyswitchontheairconditioningwhen
necessary.
I>DonotdrivewiththeRoofTransportSystem
mountedunlessyouneedit.
TheEPAestimatedm.p.g.istobeusedfor
comparisonpurposes,actualmileagemay
bedifferentfromtheestimatedm.p.g.,de-
pendingonyourdrivingspeed,weather
conditionsandtriplength.Youractual
highwaymileagewillprobablybelessthan
theestimatedm.p.g.
I>Pleaseobservealllocalandnationalspeed
limits.
OperatingYourPorscheinother
Countries
GovernmentregulationsintheUnitedStatesand
Canadarequirethatautomobilesmeetspecific
emissionregulationsandsafetystandards.
Therefore,carsbuiltfortheU.S.andCanada
differfromvehiclessoldinothercountries.
IfyouplantotakeyourPorscheoutsidethecon-
tinentallimitsoftheUnitedStatesorCanada,
thereisthepossibilitythat
-unleadedfuelmaynotbeavailable;
-unleadedfuelmayhaveaconsiderablylower
octanerating.Excessiveengineknockand
seriousdamagetobothengineandcatalytic
converterscouldresult;
-servicemaybeinadequateduetolackof
properservicefacilities,toolsordiagnostic
equipment;
-replacementpartsmaynotbeavailableor
verydifficulttoget.
Porsche
cannot
beresponsibleforthe
mechanicaldamagethatcouldresultbe-
causeofinadequatefuel,serviceorparts
availability.
IfyoupurchasedyourPorscheabroadandwant
tobringitbackhome,besuretofindoutabout
shippingandforwardingrequirements,aswell
ascurrentimportandcustomsregulations.
Maintenance,CarCare
175

Battery
A
Warning!
Riskofshortcircuitandfire.
t>Observeallwarningnotesonthebattery.
t>Disconnectthebatteryduringallworkonthe
electricalsystem.
t>Donotlaytoolsorothermetalobjectsonthe
batteryastheycouldcauseashortcircuit
acrossthebatteryterminal.

Hydrogengasgeneratedbythebattery
couldcauseanexplosion,resultingin
severepersonalinjuries.

t>Donotexposethebatterytoanopenflame,
electricalsparkoralitcigarette.
Risk
ofseverepersonalinjuryanddamage
tothefabric,metalorpaint.

t>Weareyeprotection.
t>Donotallowbatteryacidtocomeincontact
withyourskin,eyes,fabricorpaintedsur-
faces.
t>Ifyougetelectrolyte,whichisanacid,inyour
eyesoronyourskin,immediatelyrinsewith
coldwaterforseveralminutesandcalladoc-
tor.
t>Spilledelectrolytemustberinsedoffatonce
withasolutionofbakingsodaandwaterto
neutralizetheacid.

Batteryposts,terminalsandrelatedacces-
soriescontainleadandleadcompounds,
chemicalsknowntotheStateofCalifornia
tocausecancerandreproductiveharm.

t>Alwaysprotectyourskinbywashingthor-
oughlywithsoapandwater.
Note
Iftheremainingfuelislessthanapprox.1/3of
theoveralltankcapacitywhilethebatteryisdis-
chargedordisconnected,incorrectinformation
willbedisplayedwhen
thebatteryischarged
orreconnected.

Thefuellevelgaugemayindicate
more
fuel
thanisactuallyinthetank.
Therangeonremainingfueldisplayedbytheon-
boardcomputermaybehigherthaninreality.
t>Inthiscase,inordertoensurethatgauges
arepreciseandthatyoudonotrunoutof
fuel,youshouldfillupyourcarwithfuel.
Chargestate
Awellchargedbatterywillnotonlypreventstart-
ingproblemsbutwillalsolastlonger.

Inordertoavoiddischargingthebattery
unintentionally:

t>Curtailunnecessarypowerconsumption,par-
ticularlyincitytrafficorwhentravellingshort
distancesonly.
t>Alwaysremovetheignitionkeywhenleaving
thecar.
t>AvoidusingthePorscheCommunication
Managementsystemwhentheengineisnot
running.
t>t>t>
PracticalTips,EmergencyService
215

D
Dashboard62,63
Defrostingwindows30,106-109
Diagnosticsocket15,213
Diagrams255-258
Dimensions254
Door20
-Guard233
-Handles20
-Locks20,187
-Windows20,26,27,140,189
Doormirror28,29
-Heating30
Drivinghints12-14
Drivingperformance245
Dynamometertesting59,61
260Index
E
Electricalsystem212-214
Emergencyflasher99
Emergencyprogram,Tiptronic134
Emergencyservice196-239
Emergencystarting
withjumpercables220,221
Emergencyoperation
-Centrallocking22
-Convertibletop140-149
-Glassslidingroof(Targa)164,165
-Lids214
-Lifting/slidingroof138,139
-Tankflap176
Emissioncontrolsystem7,81,179,180
Enginecompartment
-Blower67,77
-Lid118,119
-Light233
Engine
-Checkingoillevel86,87,171
-Dipstick171
-Exhaust8
-Number242
-Oilconsumption14,170
-Oillevel171
-Oillevelgauge86,87
-Oilpressuregauge80
-OilpressurewarningIight80
-Oils17°-173,250
-Starting64-67
-Speeds14,245
-Switchingoff64-67
F
Foglights100,229,231
Footbrake53-55
Footwelilights114
Four-wheeldrive60,61
Fronthood118,119
Frontspoiler51
Fuel4,78,176-181,250
-Containers8
-Economy175
-Evaporationcontrol181
-Levelwarninglight78
-Levelgauge78
-Recommendation177,178
-Tank176,177,250
Fuses213
G
Garagelift205
Gearchanging128-134
Glassslidingroof161
-Emergencyoperation164,165
Glovecompartment116
Gong
16,65,84,98