2005 PORSCHE BOXSTER maintenance

184
Maintenance, Car Care
Fuel Evaporation Control Fuel tank venting The evaporation chamber and the carbon canister
prevent fuel from escaping to the atmosphere at
extreme high outside temperatures, when driving
abruptly around curves and when the car is parked
at an incline or in any other nonlevel position. Vapor control system and storage When the fuel tank is filled, vapors are collected in
the evaporation chamber by a vent line leading the
vapors to the carbon canister where they are
stored as long as the engine does not run. Purge system When the engine is running, the fuel vapors from
the canister will be mixed with fresh air from the
ambient air of the canister. This mixture will be di-
rected to the intake air housing by the tank vent
line, mixed with the intake air and burned during
normal combustion.
Washer Fluid The reservoir, with a blue screw cap, is in the front
luggage compartment, to the rear left. Capacity – Without headlight cleaning system:
approximately 2.5 liters.
– With headlight cleaning system:
approximately 6 liters. Adding washer fluid
Clean water is generally not enough to clean the
windshield and headlights.
It is advantageous to add a winter cleaner giving
antifreeze protection or a suitable summer clea-
ner, depending on the season. Follow the instruc-
tions for the mixing ratio.
fDo not use engine coolant anti-freeze or any
other solution that can damage the car’s paint,
in the washer reservervoir.
1. Please follow all the information on the contai-
ner of the cleaning agent.
2. Undo the cap (arrow).
3. Top up the washer fluid and carrefully replace
the cap.
If less than 0.5 liter remains, a warning message
appears on the on-board computer.
fAdd washer fluid.
Warning light

Maintenance, Car Care
185
Opening Engine Compartment Lid Moving convertible top to service position 1. Open or close the convertible top far enough
so that it is approximately 60 cm away from
the windshield frame.
Please observe the chapter “CONVERTIBLE
TOP” on Page 154.
2.Withdraw the ignition key so that the con-
vertible top cannot be operated unintenti-
onally. 3. Pull off the two upper ball heads of the tension
ropes (arrow).4. Unclip fabric covering from the two holders (ar-
row) downwards.

186
Maintenance, Car Care 5. Fold rear part of the convertible top forward
(arrow). Press upper part of the rear window
down when doing this. 6. Undo Velcro fastening strip of the restraining
strap. 7. Engage restraining strap in the convertible top
guide.

Maintenance, Car Care
187
Disengaging luggage net fOn vehicles with luggage net, unhook the
hooks on both sides of the roll-over bar (ar-
row).
Removing storage box fOn vehicles with BOSE High End sound pa-
ckage, disconnect the electrical plug connec-
tion of the loudspeakers.
To do this, press the securing levers (small ar-
rows) at the sides.
The plug connection is fastened on the outer
right side of the roll-over bar. fOpen turn-locks A of the storage box and pull
out by approx. 1.5 cm until they engage.
Take out storage box to the rear.
Removing carpet covering fOpen turn-locks B of the carpet covering.
Remove carpet covering.
On vehicles with luggage net, the two front turn-
locks also have to be opened.

188
Maintenance, Car Care
Removing engine compartment lid 1. Withdraw the ignition key so that the convertib-
le top cannot be operated unintentionally.
fOpen all 5 catches of the engine compartment
lid with an Allen key.
fRemove engine compartment lid.
Warning!
Risk of intoxication. Exhaust or fumes from
the engine compartment could enter the
passenger compartment.
fDo not drive with the engine compartment lid open.
Closing Engine Compartment Lid 1. Withdraw the ignition key so that the convertib-
le top cannot be operated unintentionally.
Warning!
Risk of intoxication. Exhaust or fumes from
the engine compartment could enter the
passenger compartment.
fMake sure that the engine compartment lid clo-ses tightly and all catches are fully locked.
2. Put on engine compartment lid.
Fully lock all 5 catches of the engine compart-
ment lid with an Allen key.
3. Put on carpet covering.
Lock turn-locks of the carpet covering.
Vehicles with luggage net: 4 turn-locks.
Vehicles with storage box: 2 turn-locks.
4. Push storage box under the supplemental safe-
ty bar from behind.
Press down and lock turn-locks of the storage
box.
5. On vehicles with BOSE High End sound pa-
ckage, connect the electrical plug connection
of the loudspeakers. 6. Disengage the retaining strap and fasten it at
t h e re a r p a r t o f th e c onvertible top with the Vel-
cro fastening strip.
7. Fold down rear part of the convertible top.
8. Clip fabric covering into both holders.
9. Engage both lower ball heads of the tension ro-
pes.
10.Open or close convertible top.
Please observe the chapter “CONVERTIBLE
TOP” on Page 154.
Engine compartment lid behind the seats An additional lid for assembly and servicing work
is located under the carpet behind the seats.

Maintenance, Car Care
189
Power Steering
Warning!
Risk of accident.
When the engine is stopped (e.g. when on
tow) or the power steering has failed there is
no steering assistance.
Therefore, substantially more force will have
to be exerted in order to steer.
fExercise great care when being towed.
fHave the fault remedied at your nearest autho-rized Porsche dealer. Note
The flow noise heard at full steering lock is design-
related and does not indicate a defect in the stee-
ring system.
Checking hydraulic fluid fPlease observe the chapter “EXERCISE EXTRE-
ME CAUTION WHEN WORKING ON YOUR VE-
HICLE” on Page 168.
The hydraulic fluid reservoir is located in the engi-
ne compartment.
fOnly use hydraulic fluid authorized by Porsche.
fPlease observe the chapter “CAPACITIES” on
Page 266.
fCheck the fluid level with the engine stopped
and cold (approximately 68°F/20°C).
1. Open the engine compartment lid.
Please observe the chapter “OPENING ENGINE
COMPARTMENT LID” on Page 185.
2. Open the reservoir cap.
3. Wipe measuring rod.
Close lid and reopen. The fluid level should lie
in the area below the ”Cold“ marking.
Add hydraulic fluid if necessary.
4. Close cap carefully.
Close engine compartment lid.
Noticeable loss of fluid indicates leakage in the
system.
The cause should be remedied immediately at an
authorized Porsche dealer.

190
Maintenance, Car Care
Air Filter The air filter is on the left-hand side of the engine
compartment.
A dirty air filter not only reduces engine perfor-
mance, but can lead to premature engine wear.
Regular filter replacement is part of the routine
maintenance service.
fIn dusty conditions, check the filter element
more frequently and replace if necessary. Combination filterThe fresh air passing through the combination
filter into the passenger compartment is virtually
free of dust, pollen, and unpleasant odours.
fIf the outside air is polluted by exhaust fumes,
press the circulating-air button.
A dirty filter can be the cause of reduced air
throughput:
fHave the filter replaced by an authorized
Porsche dealer.
Regular filter replacement is part of servicing.
Automatic Transmission Fluid The torque converter and the transmission are lu-
bricated with Automatic Transmission Fluid (ATF).
The final drive requires transmission oil.
fPlease observe the chapter “CAPACITIES” on
Page 266.
Do not tow the car or run the engine without ATF
in the transmission. The automatic transmission
may be damaged by even a tiny speck of dirt, only
a clean funnel or spout must be used when adding
AT F.
The ATF and transmission oil has to be checked
and changed at the intervals listed in your Mainte-
nance Schedule.
We recommend that you have the ATF and trans-
mission oil changed at your Porsche dealer, who
has the required lubricants and the necessary fil-
ling equipment.
If you suspect an oil leak in the transmission, have
your authorized Porsche dealer check it out imme-
diately.
Manual Transmission Oil The transmission oil has to be checked and chan-
ged at the intervals listed in your Maintenance
Schedule.
fPlease observe the chapter “CAPACITIES” on
Page 266.
We recommend that you have the transmission oil
changed at your Porsche dealer, who has the re-
quired lubricants and the necessary filling equip-
ment.
If you suspect an oil leak in the transmission, have
your authorized Porsche dealer check it out imme-
diately.

Maintenance, Car Care
191
Car Care Instructions fPlease observe the chapter “EXERCISE EXTRE-
ME CAUTION WHEN WORKING ON YOUR VE-
HICLE” on Page 168.
Regular and correct care helps to maintain
the value of your car and is also a precondi-
tion for the New Vehicle Warranty and the
Anti Corrosion Warranty.
Your authorized Porsche dealer has specially
developed car-care products from the
Porsche program available either singly or
as complete car-care sets. They will be ple-
ased to help you select suitable products.
Whether you use Porsche products or other
commercially available cleaning agents first
make sure of their correct application.
A Porsche that is well-cared for can look like new
for years. It all depends on the amount of care the
owner is willing to give the car.
Warning!
Risk of serious personal injury or damage to
the vehicle or property.
Cleaning agents may be hazardous to your
health.
Most chemical cleaners are concentrates
which require dilution. High concentrations
might cause problems ranging from irritation
to serious injury as well as damage to your
vehicle.
fKeep cleaning agents out of reach from child-
ren.
fObserve all caution labels.
fAlways read directions on the container before
using any product. These directions may con-
tain information necessary to avoid personal
injury.
fDo not use fuel, kerosene, naphtha, nail polish
remover or other volatile cleaning fluids. They
may be toxic, flammable or hazardous in other
ways. Only use spot removing fluids in a well
vented area.
fDo not clean the underside of chassis, fen-
ders, wheel covers, etc., without protecting
your hands and arms as you may cut yourself on sharp-edged metal parts. Moisture and road salt on brakes may affect bra-
king efficiency.
fTest the brakes after each vehicle washing.