2005 PORSCHE BOXSTER tow

Controls, Instruments
109
Automatic Headlight Beam
Adjustment Vehicles with Litronic headlights feature auto-
matic headlight beam adjustment.
When the ignition is switched on, the level of the
headlight beam automatically changes in accor-
dance with the vehicle load.
The level of the headlight beam is automatically
kept constant during acceleration and braking.
Checking operation
1. Switch the low beam on.
2. Switch ignition on.
The light beam first dips all the way down and
is then adapted to the vehicle load.
The level of the low beam rises perceptibly
when the high beam is switched on.
If these test items are not met, the headlight beam
adjustment must be checked by an authorized
Porsche dealer.
Turn Signal/ Headlight Dimmer/
Parking light / Flasher Lever Turn signals, low beam and high beam are ready
for operation when the ignition is on.
1– Turn signal left
2– Turn signal right
3–High beam
4– Headlight flasher
Lever in center position–Low beam
When high beam and headlight flasher are selec-
ted, the blue indicator light in the tachometer is lit.
The turn signal lever turns off automatically when
the steering wheel is straightened out after com-
pleting a turn.
Lane changer fTo indicate your intention when changing lanes
on the freeway, slightly lift or depress the lever
to the resistance point.
The lever will return to the OFF position when
released.
fIf the frequency of the display becomes notice-
able faster, check the operation of the turn si-
gnal bulbs. Headlight flasher (With ignition on or off)
fTo flash the headlights to oncomming moto-
rists, slightly pull the lever toward the steering
wheel and then release it.
The blue indicator light in the tachometer will
go on/off as you pull/release the lever. Parking lightThe parking light can only be switched on when
the ignition is switched off.
fMove the lever up or down to switch on the
right or left parking light.

110
Controls, Instruments
Windshield Wiper / Washer Lever
Warning!
Danger of injury when the windshield wipers
operate unintentionally.
Risk of damage to the windshield and wiper
system.
fAvoid running the wiper blades over a dry wind-
shield to prevent scratching the glass. Spray
washer fluid on the windshield first.
A scratched windshield will reduce visibility.
fAlways loosen wiper blades from frozen glass
before operating wipers to prevent damage to
the wiper motor or blades. fAlways switch off windshield wipers in car
wash to prevent them wiping unintentionally
(intermittent or sensor operation).
fAlways switch off windshield wipers before
cleaning the windshield to avoid unintentional
operation (intermittent or sensor operation).
fDo not operate the headlight washer in car
washes.
fDo not operate headlight washer when it is
frozen.
Wiper and headlight washer system0 – Windshield wipers off
1 – Rain sensor operation for front
windshield wipers
fMove wiper lever upwards to the first click.
Please observe the chapter “RAIN SENSOR” on
Page 111.
2 – Windshield wipers slow
fMove wiper lever upwards to the second click.
3 – Windshield wipers fast
fMove wiper lever upwards to the third click.
4 – Front windshield wiper – one-touch oper-
ation:
fMove wiper lever downwards. The windshield
wipers wipe once.5 – Windshield wipers and washer system:
fPull wiper lever towards the steering wheel.
The washer system sprays and wipes while the
lever is pulled towards the steering wheel.
When the wiper lever is released, a few drying
wipes are executed.
A - Headlight washer (Vehicles with Bi-Xenon
headlights):
The washer sprays only while low beam or high
beam is switched on.
fBriefly push button A to operate headlight
washer system.
fIf heavily soiled, repeat wash.
The headlight washer system automatically sprays
once for every ten times the front windshield
washer system is operated.
Note
The windshield washer nozzles are heated
when the ignition is on, as a precaution against
freezing.

Controls, Instruments
113
Decelerating Option 1
fPull operating lever towards the steering wheel
(position 2) until the desired speed is reached.
The speed reached is maintained and stored
when the lever is released.
Option 2
fBriefly move lever towards the steering wheel
(position 2) (a maximum of 10 times).
The speed is reduced by 1 mph (1.6 km/h)
each time.
Interrupting automatic speed control
operation fPull operating lever downwards briefly
(position 3) or
fOperate brake or clutch pedal or
fSwitch Tiptronic transmission to selector lever
position N.
fPlease observe the chapter “TIPTRONIC S” on
Page 147.
The speed driven before the interruption remains
stored in the memory.
Automatic speed control operation is
interrupted automatically:
– If the set vehicle speed is exceeded by more
than approx. 16 mph (25 km/h) for longer than
20 seconds.
– If the actual vehicle speed falls to approx.
6 mph (10 km/h) below the set vehicle speed
for longer than 5 seconds (upward slopes).
– For PSM control operations.
Resuming the stored speed fBriefly push operating lever upwards
(position4).
The speed control accelerates/decelerates
the vehicle to the stored speed.
The stored speed should only be recalled when
traffic conditions and the road surface so permit.Switching automatic speed control
readiness off fPress button A on the automatic speed control
lever.
The green readiness light in the speedometer
goes off.
When the vehicle is parked and the ignition
switched off, the memory is cleared.
Important note
On upward or downward slopes, the set speed
cannot always be maintained by the automatic
speed control.
To obtain sufficient engine braking or a better en-
gine-speed range, therefore, you have to select a
lower gear.

136
Controls, Instruments
Luggage Compartment Access covers(on vehicles with DVD navigation or CD changer)
Opening
fGrasp access cover A or B at the handle and
open.
fThe drive for DVD navigation and the CD
changer can be found behind the access
cover B.
Caution!
Risk of damage.
fDo not store any heavy, damp or heat-sensitive objects behind the access covers.
Tool boxOpening
fUnlock turn-locks C.
fOpen tool box and place it on the floor of the
luggage compartment.
E- Adapter for security wheel bolts
F- Tire filling compressor
G-Towing hook
H-Tool kit
I-Tire sealantClosing
fInsert tool box into the guide pegs in the
luggage compartment floor.
fClose tool box and lock the turn-locks C.

Shifting Gear
149
Selector Lever Positions P – Parking lock fSelect only when car has been stopped.
fEngage parking lock after applying the hand-
brake and release it before releasing the hand-
brake.
The ignition key can be withdrawn only in
selector lever position P. R – Reverse fSelect only when car has been stopped and
the brake is applied. N – Neutral Selector lever position N must be selected for to-
wing or in car washes, for example.
fSelect the desired position for moving off (D,
M or R) only when the engine is idling and while
depressing the brake pedal.
fSelect position N while driving only if the car
is threatening to skid in slippery conditions.
Otherwise N should not be selected when dri-
ving.
D – Automatic selection mode fSelect position D for “normal” driving. The ge-
ars are shifted automatically according to the
accelerator position and speed.
Depending on the way the vehicle is driven and on
the resistance (e.g. uphill), the gear-changing
points are shifted towards higher or lower engine-
speed ranges.
The accelerator position, driving speed, engine
speed, longitudinal and lateral acceleration and
the road profile all have an influence on the gear-
changing characteristic.
Unwanted upward shifts, e.g. before bends, are
prevented by swiftly releasing the accelerator pe-
dal.
Depending on lateral acceleration, upward shifts
on bends are not made until the engine-speed limit
is reached.
Under braking, and depending on the amount of
deceleration, the Tiptronic shifts down earlier.
For subsequent cornering, the right gear is enga-
ged when pressure is applied to the brakes before
the bend.
The bend is taken in the right gear, and when you
accelerate out of the bend you do not have to shift
down. Driving off
In 2nd gear, the vehicle drives off with the throttle
only slightly open.
Drive off in 1st gear with the throttle open wider
or when the engine is cold.

152
Shifting Gear
Slip monitoring When the speeds of rotation of the front and rear
axles differ by more than the maximum permissib-
le value, integrated slip monitoring shifts up to the
next gear.
This increases driving stability on a slippery sur-
face.
Note
fSlip monitoring is also deactivated when
Porsche Stability Management (PSM) is swit-
ched off. Stopping fFor a brief stop, e.g. at a traffic light, leave the
selector lever in drive position and hold the ve-
hicle with the brake pedal.
fFor a longer stop with the engine running,
select position N (neutral).
fDo not hold the car on a slope using the
accelerator. Use the brake pedal or the hand-
brake instead.
fBefore leaving the vehicle, always apply the
handbrake and move the selector lever to
position P.
Parking fGo easy on the accelerator.
fWhen parking or maneuvring in a small space,
control the speed by careful use of the footbra-
ke. Driving in winter In wintery road conditions it is advisable to take
steep inclines in manual mode. This prevents the
occurrence of gear changes that could cause
wheelspin. Tow-starting, towing fPlease observe the chapter “TOWING” on Page
254.
Emergency program
Warning!
Reverse gear lock monitoring is disabled in
the emergency running program.
Damage to the vehicle may result as well as
loss of control, if the vehicle is moving for-
w a r d f a s t e n o u g h t o c a u s e r e a r w h e e l l o c k u p .
fDo not shift into R while the vehicle is moving forward.
A transmission fault is indicated by the following
symptoms:
–The 4th-gear display flashes.
– The warning “Tiptronic emergency run”
appears in the on-board computer.
– The transmission no longer shifts.
Regardless of selector lever position, 4th is
the only forward gear still available.
fAdapt your driving style to the changed hand-
ling.
fTo remedy the fault, please consult an authori-
zed Porsche dealer.

Mobile Roofs
161
WindstopfMake sure that all windstop parts are fastened
securely, especially when driving with the
convertible top open.
Note
When the convertible top is closed, it is a good
idea to remove the center section of the windstop
to permit good ventilation of the interior or for
demisting the rear window.
This is particularly the case in cold, wet weather.
Removing outer windstop partsfPress windstop parts to the rear and up out of
the roll-over bar and take it out.Installing outer windstop partsfFirst insert the windstop parts in the roll-over
bar from the rear, then push it up into the bar.
fMake sure that the three plastic tongues A fully
engage in the roll-over bar.
Removing central section of windstop
parts fPress release buttons B and take out the
windstop toward the rear. Installing center section of windstopfFirst insert the windstop in receiver C from the
rear, then, one after the other, press forward
until both upper mounts B engage audibly.

Maintenance, Car Care
183
How Emission Control Works When an automobile engine is running, it uses en-
ergy generated through the combustion of a mix-
ture of air and fuel. Depending on whether a car is
driven fast or slowly or whether the engine is cold
or hot, some of the fuel (hydrocarbons) may not
be burned completely, but may be discharged into
the engine crankcase or exhaust system. Addito-
nal hydrocarbons may enter the atmosphere th-
rough evaporation of fuel from the fuel tank. These
hydrocarbons (HC), when released into the air,
contribute to undesirable pollution.
In addition, carbon monoxide (CO) and oxides of
nitrogen (NOx) contribute to engine emissions.
They, too, are formed during the combustion pro-
cess and discharged into the exhaust system.
To reduce these pollutants, your Porsche is equip-
ped with a precisely calibrated fuel injection sys-
tem to assure a finely balanced air/fuel mixture un-
der all operating conditions.
Oxygen sensor The oxygen sensor, installed in the exhaust pipe
continuously senses the oxygen content of the ex-
haust and signals the information to an electronic
control unit. The control unit corrects the air/fuel
ratio, so the engine always receives an accurately
metered air/fuel mixture. Crankcase ventilation Through crankcase ventilation, undesirable emis-
sions from the engine crankcase are not permit-
ted to reach the outside atmosphere. These emis-
sions are recirculated from the crankcase to the
air intake system. From here the emissions mix
with the intake air and are later burned in the engi-
ne. Catalytic converters The catalytic converters are efficient ”clean-up“
devices built into the exhaust system of the vehic-
le. The catalytic converters burn the undesirable
pollutants in the exhaust gas before it is released
into the atmosphere.
The exclusive use of unleaded fuel is critical-
ly important for the life of the catalytic con-
verters. Therefore, only unleaded fuel must
be used. The catalytic converters will be damaged by:
– push or tow starting the vehicle,
– misfiring of the engine,
– turning off the ignition while the vehicle is mo-
ving or
– driving until the fuel tank is completely empty,
– by other unusual operating conditions.
fDo not continue to operate your vehicle under
these conditions, since raw fuel might reach
the catalytic converters. This could result in
overheating of the converters. Federal law pro-
hibits use of leaded fuel in this car.