ignition PORSCHE BOXSTER 2009 2.G Repair Manual

Instruments, On-Board Computer, Warnings
153
This tire pressure warning appears
– for approx. 10 seconds with vehicle stopped when switching off the ignition or
– again when switching on the ignition.
With ignition on, the warning can be deactivated.
The tire pressure warning light in the instrument
panel goes out only when the tire pressure has
been corrected. Stage 2 – Flat tire
At speeds
below 100 mph (160 km/h):
The pressure in the tire has dropped by more
than 7 psi (0.5 bar) . This significant pressure
loss is a danger to road safety.
At speeds above 100 mph (160 km/h):
The pressure in the tire has dropped by more
than 5 psi (0.4 bar) . This significant pressure
loss is a danger to road safety.
f When the tire pressure warning appears, stop
immediately at a suitable location. Check the
indicated tire for signs of damage. If neces-
sary, fill in tire sealant and set the correct tire
pressure. This tire pressure warning also appears when
driving and can be acknowledged.
The tire pressure warning light on the instrument
panel goes out only when the tire pressure has
been corrected.

154
Instruments, On-Board Computer, Warnings
System learningThe Tire Pressure Monitoring begins to “learn” the
wheels after a wheel change, wheel transmitter
replacement or update of the tire settings. During
this process, the Tire Pressure Monitoring recog-
nizes the tires and their locations.
The on-board computer displayes the message
“TPM is learning, monitoring not act.”.The Tire Pressure Monitoring requires a certain
amount of time to learn the wheels. During this
time, the current tire pressures are not available
on the on-board-computer:
– The tire pressure warning light remains lit until
all wheels have been learned.
– The display of the tire pressure function of the on-board computer shows lines.
– The required pressures for cold tires at 68 °F (20 °C) are indicated in the Info pressure
display in the tire pressure menu.
Position and pressure information is displayed as
soon as the Tire Pressure Monitoring has as-
signed the wheels identified as belonging to the
vehicle to the correct wheel positions.
The wheel learning process takes place
exclusively when the vehicle is being driven
(vehicle speed above 25 km/h (16 mph)).
f Check the tire pressure for all wheels on the
“Info pressure” display.
f Correct the tire pressure to the required
pressure if necessary.
Changing a wheel and replacing tiresfNew wheels must be fitt ed with radio transmit-
ters for the Tire Pressure Monitoring.
Before tires are changed, the battery charge
state of the wheel transmitters should be
checked at an authorized Porsche dealer.
f Switch the ignition off when changing a wheel.
The tire settings on the on-board computer must
be updated after changing a wheel.
If the tire settings are not updated, the message
“Wheel change? Input new TPM settings!” is
displayed on the on-board computer.
f Update the on-board computer settings when
the vehicle is stationary the next time.

158
Instruments, On-Board Computer, Warnings
6. If the segments are fille
d in up to the top line,
the oil level has reached the maximum mark.
Under no circumstances add engine oil. 7. If the bottom segment is filled in, the oil level
has reached the minimum mark.
Add engine oil immediately.
8. If the bottom segment fl ashes, the oil level has
dropped to below the minimum mark.
Add engine oil immediately.
The difference between the minimum and
maximum marks on the segment display is
approx. 1.3 quarts (1.25 litres).
One segment of the display corresponds to a
top-up quantity of approx. 0.42 quarts (0.4 litre).
f Add engine oil if necessary.
Switch off ignition before adding engine oil. f
Please see the chapter “ENGINE OIL LEVEL”
on Page 199.
f Never add more engine oil than required
to reach the maximum mark.
Failure
A failure of the oil level display is indicated by a
warning message on the on-board computer.
“Check engine oil level” display
The on-board computer display “Check engine oil
level” is an additional measurement that takes
place in the background while driving.
The display depends on the distance travelled.
This display appears if th e oil level has reached the
minimum mark or if the o il level is well above the
maximum mark.
This message must be acknowledged by measu-
ring the engine oil leve l manually using the on-
board computer.
f Please see the chapter “INITIATING OIL LEVEL
MEASUREMENT” on Page 157.
If an oil level measurement was initiated manually
on the on-board computer and no oil was topped
up, the message “Check engine oil level” is
displayed again when the vehicle is driven.

Instruments, On-Board Computer, Warnings
161
Average consumption and average speed
The values displayed are based on the distance
travelled since the last reset to “zero”.
You can set the starting time for a measurement
before or during the trip.
Switching the ignition off does not reset the meas-
urements. It is therefore possible to collect values
over long periods.
Disconnecting the car ba ttery will cause these
memories to be erased.
Tire pressure
The Tire pressure function of the on-board
computer displays the ti re pressures dependent
on temperature in the four wheels. You can watch
the tire pressure rise and fall while driving.
The display is only for information.
f To correct the tire pressures, always use the
displayed values from the “Info pressure”
display in the tire pressure menu.

162
Warnings
Warnings on the instrument panel and the on-board computerIf a warning message appears, always refer to the corresponding chapters in the Owner’s Manual.
Warning messages are issued only if all measurement preconditi ons are met. Therefore, check all fluid levels regularly –
in particular, always check the en gine oil level before refuelling.
Instrument
panel On-board
computerText display on on-board
computer Meaning/measure
Seat belt
Driver and passengers must fasten their seat
belts.
Handbrake Handbrake is still on.
Ignition key
not removed
Replace battery
in ignition key Replace the remote-control battery.
Ignition lock faulty,
please go to workshop Have the fault remedied at an authorized
Porsche dealer.
Ignition lock faulty,
visit workshop now Have the fault remedied at an authorized
Porsche dealer.
Relieve steering Relieve the steering l o c k b y m o v i n g t h e s t e e r i n g
wheel to the left or right.
Steering locked The steering wheel lock remains engaged.
Have the fault remedied at an authorized
Porsche dealer.
Lights on Low beam/side marker lamps on
Parking light on Left/right parking light on

Warnings
167
Move selector lever to PPorsche Doppelkupplung:
Move selector lever to position P before with-
drawing key from ignition lock.
Apply brake Porsche Doppelkupplung:
Apply the brake when starting.
Depress clutch pedal Manual transmission:
Depress clutch pedal when starting.
Move selector lever
to position P or N Porsche Doppelkupplung:
The vehicle can be started only in the selector
lever position P or N.
Text display in white:
Transmission
emergency run Restricted gearshift comfort,
failure of reverse gear.
Have the fault remedied
at an authorized
Porsche dealer.
Text display in red:
Transmission
emergency run No selector lever positi
on is displayed on the
instrument cluster.
Vehicle can be driven only until it comes to a
stop.
It is not possible to continue driving. Immedi-
ately stop the vehicle in a suitable place. Have
the vehicle towed to an authorized Porsche
dealer.
Transmission
temperature
too high Jerking can be felt when driving off, and the
engine power may be restricted.
Do not hold the vehicle
with the accelerator on
a hill, for example. Hold the vehicle with the
brake. Reduce engine load. If possible, stop the
vehicle in a suitable place. Allow the engine to
run in selector lever position P or N until the
warning disappears.
Instrument
panel On-board
computerText display on on-board
computer Meaning/measure

172
Shifting Gears
Manual Transmission, ClutchThe positions of the gears are shown on the shift
diagram on the gearshift lever.
Warning!
Risk of accident, resulting in serious person-
al injury or death.
f Do not obstruct the pedal travel with floor mats
or other objects.
Nonskid floor mats of the correct size are
available at your authorized Porsche dealer. To avoid damage to the clutch and transmis-
sion:
f
Always depress the clutch pedal fully when
changing gears. Make sure that the gearshift
lever is completely engaged.
f Only shift into reverse when the car has come
to a complete stop.
f When shifting gears, always ensure that the
clutch pedal is fully depressed and the gear
has fully engaged.
f Select reverse only when vehicle is stationary.
Reverse gear can be enga ged after shifting the
gearshift lever as far as possible to the left.
f Select an appropriately low gear on upward
and downward slopes.
This will ensure optimum use of engine power
and engine braking.
When reverse gear is sele cted and the ignition is
on, the backup lights are illuminated.
Permitted engine speedf You should change into a higher gear before
the needle reaches the red mark on the
tachometer, or ease off the accelerator.
If the red zone is reached during acceleration, fuel
feed is interrupted.
Caution!
Risk of engine damage (overrevving) when
shifting down to a lower gear.
f Take care not to exceed the maximum permitted engine speed when shifting down.

174
Shifting Gears
Porsche Doppelkupplung (PDK)The Porsche Doppelkupplung (PDK) is a seven-
speed transmission with an “automatic” and a
“manual” selection mode.
In automatic selection mode (selector lever
position D), gear changing is automatic.
You can change temporarily from automatic to
manual mode using the shift buttons on the
steering wheel.
In manual selection mode (selector lever
position M), you change gear using the shift
buttons on the steering wheel or with the PDK
selector lever.
You can change between se lector lever position D
and M as you wish while driving.
Note
f Take care not to operat e the shift buttons on
the steering wheel in advertently in either
automatic or manual mode, thereby triggering
undesired gear changes.
Changing the selector lever positionThe selector lever is locked when the ignition is
switched off.
When the ignition is switched on, the selector lever
can be moved from position P and N only when
the release button is pressed, and when the brake
pedal is pressed.
Release button
The release button ( arrow) in the selector lever
prevents the gear from being changed unintention-
ally.
The release button must be pressed when shifting
to position R or P.
StartingThe engine can be started only if the brake
pedal is depressed and the selector lever is in
position P or N.Driving offf Only select the desired position for driving off
( D, M or R ) when the engine is idling and the
brake pedal is depressed.
f Since the vehicle creeps when in gear, do not
release the brake until you want to move off.
f After selecting a gear, do not accelerate until
you can feel that the gear is engaged.
Driving off on hills
The Drive-Off Assistant assists the driver when
moving off on hills. The vehicle is held on the slope
for a short time during the change from the brake
pedal to the accelerator in order to allow driving
off directly after the brake is released.
f Please see the chapter “DRIVE-OFF ASSIS-
TANT” on Page 173.

176
Shifting Gears
Selector lever positionsP – Parking lockfEngage parking lock only when vehicle is
stationary.
If selector-lever position P is flashing in the
instrument cluster, the parking brake is not
engaged. The vehicle can roll away.
Engage selector-lever position P again by
moving the selector lever out of R.
f Engage parking lock after applying the
handbrake and release it before releasing the
handbrake.
The ignition key can be withdrawn only in
selector lever position P.R – Reverse gearf Select only if car is stationary and the brake is
applied.N – NeutralSelector lever position N must be selected for
towing or in car washes, for example.
f Only select the desired position for driving off
(D, M or R) when the engine is idling and the
brake pedal is depressed.
D - Automatic selection modeSelect position D for “normal” driving. The gears
are shifted automatically according to the acceler-
ator position and speed.
Depending on the way the vehicle is driven
(economical, comfortable or sporty driving style)
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
pedal.
Depending on lateral acceleration, upward
changes on bends are not made until the engine-
speed limit is reached.
Under braking, and depending on the amount of
deceleration, the PDK transmission changes down
earlier.
For subsequent cornering, the right gear is
engaged when pressure is applied to the brakes
before the bend. The bend is taken in the right
gear, and when you accelera te out of the bend you
do not have to change down. With a sporty driving style, downshifts are already
initiated when the brake pedal is touched lightly.
This further enhances
a dynamic driving style.
The PDK transmission temporarily changes to the
sportiest gear-changing map, i.e. to the highest
possible gear-changing poin ts, if the accelerator
pedal is pressed quickly. The transmission accord-
ingly shifts down immediately by one or two gears
(temporary change-down).
The transmission no longer selects 7th gear at
high driving speeds.
Sport mode
(“Sport” and “Sport Plus” modes)
“Sport” mode activated:
The PDK transmission switches to a sporty gear-
changing map and shortens the gear shifting
times.
A sporty driving style is recognised more quickly
and the gear-changing speeds are adapted to
driving performance.
Deceleration downshifts are commenced earlier.
Downshifts are already carried out in the case of
slight decelerations, even at higher engine
speeds.

182
Mobile Roofs
Convertible TopBrief operating instructions can be found on the
back side of the driver’s sun visor.
fPlease see the chapter “CAR CARE INSTRUC-
TIONS” on Page 213.
Warning!
When opening or closing the convertible top,
serious personal injury may occur if a per-
son’s body parts are near or in the way of the
convertible top mechanism’s moving parts.
f Make absolutely sure that nobody can be
injured by the convertible-top mechanism or the convertible-top compartment lid.
Do not operate convertible top:
– At temperatures below 32 °F/0 °C.
– When one side of the ca r is on a curb, a hoist
or a jack.
– When items of luggage or other objects hinder the convertible top movement.
f Drive only with the convertible top fully open or
closed (end positions). f
Items of luggage or objects on the luggage
tray above the engine compartment lid must
be put in the storage box or be secured to
prevent their sliding out. These items must not
be in abrasive contact with the convertible top
or rear window. Keep s hutters of the storage
box closed while driving.
f Avoid frequent operation of the convertible top
with the engine off; the vehicle battery would
be unintentionally discharged rapidly.
f When opening or closing the convertible top,
ensure there is sufficient clearance above the
convertible top (e.g. in the garage).
f To prevent damp stains and abrasions, only
open the convertible top in a dry, clean state.
f Park your car in the shade whenever possible,
as the fabric, rubber ma terial and color can be
harmed by long exposure to sunlight.
f The convertible top may only be actuated
during driving on even surfaces.
f The convertible top must not be used with
strong counter wind (over approx. 50 mph/
80 km/h).
Conditions for operating the convertible
top – The ignition must be switched on
(engine running or off).
– Maximum speed 30 mph (50 km/h) The opening/closing process of the convertib-
le top will be interrupted if the maximum speed
is exceeded.
f Reduce speed.
Press button again.
The opening/closing process is ended.