2006 PORSCHE 911 CARRERA tire pressure

112
Controls, Instruments fSelect “Continue” and push the operating lever
forward.
fSelect the appropriate tire size (18 or 19 inch)
and push operating lever forwards.
A display for confirming the selected tire size
appears.
Note
This menu is only displayed when different tire
sizes are approved.fSelect “Continue” and push the operating lever
forward.
Setting of the tire characteristics has only been
successfully completed when the message
“Process complete” is displayed by the on-board
computer.
fSelect arrow (Back) and push the operating
lever forward. The display returns to the Tire
pressure menu.
The on-board computer additionally displays
the message “System learning”.Note
The message “Process aborted” appears if the
setting process is interrupted. All entries made up
to this point are lost, and the original settings
remain in effect.
Only if the message “Process complete” appears
after the settings have been made will the tire
pressure monitoring re-learn the wheels.
fPlease observe the chapter “SYSTEM
LEARNING” on Page 115.
Before fitting tires with sizes which are not stored
in the on-board computer, the missing information
should be supplemented in the on-board
computer.
fConsult a qualified specialist garage. We
recommend that you use a Porsche partner for
this work since these are staffed with trained
personnel and have the necessary parts and
tools.
fUse only tires approved by Porsche.
The available items in the Tire pressure menu
depend on the equipment of your vehicle. For this
reason it is possible that some of the items shown
here are not available on your on-board
computer’s display.

Controls, Instruments
113
Load
(depending on equipment level)
fPush operating lever forward in order to switch
on the selection field.
fSelect “TPC” with the operating lever.
fPush operating lever forward.
The display changes to the Tire pressure
menu.
fSelect “Load” with the operating lever.
fSelect partial load or full load and push the
operating lever forward.fPlease observe the chapter “TIRE PRESSURES
FOR COLD TIRES” on Page 290.
fMake sure that the tire pressures correspond
to the on-board computer settings. Correct the
tire pressures if necessary.

114
Controls, Instruments Tire pressure warnings
The tire pressure monitoring warns about loss in
pressure in two stages, depending on the amount
of pressure loss:
Stage 1 – Add air
(3 to 6 psi (0.2 to 0.4 bar) loss in pressure)
Stage 2 – Flat tire
(from 6 psi (0.4 bar) loss in pressure)
Stage 1 – Add air
The pressure in the tire is too low by 3 to 6 psi (0.2
to 0.4 bar).
Driving with insufficient tire pressure reduces the
road safety of the vehicle and destroys the tire and
wheel.
fThe tire pressure warning contains the
affected tire with the tire pressure to be added.
Correct the tire pressure at the next
opportunity.
This tire pressure warning appears with vehicle
stopped and can be deactivated.
The tire pressure warning light in the instrument
panel goes out when the tire pressure has been
corrected.Stage 2 – Flat tire
The pressure in the tire has dropped by more than
6 psi (0.4 bar). This significant pressure loss is a
danger to road safety.
fWhen the tire pressure warning has appeared
on the on-board computer, stop immediately at
a suitable location. Check the tire for signs of
damage. If necessary, fill in tire sealant and set
the correct tire pressure.
This tire pressure warning appears when driving
and can be deactivated.
The tire pressure warning light in the instrument
panel goes out when the tire pressure has been
corrected.

Controls, Instruments
115
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-
nises the tires and their locations. The on-board
computer displayes the message “TPC inactive –
system learning”.
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 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.
– Tire pressure warnings are issued without tire
pressure and position information (figure) as
soon as the vehicle’s own wheels have been
detected and the tire pressure warning light
has gone out.Position and pressure information is displayed as
soon as the tire pressure monitoring has assigned
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.
fManually check the tire pressure at all wheels
and correct the tire pressure to the required
value.
Changing a wheel and replacing tiresfNew wheels must be fitted 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.
fSwitch the ignition off when changing a wheel.
The tire settings on the on-board computer must
be updated after changing a wheel.
A message appears if the characteristics of the
new tires do not agree with the on-board computer
settings.
fUpdate the on-board computer settings when
the vehicle is stationary the next time.

116
Controls, Instruments The warning light in the speedometer lights up:
– When a loss in pressure has been detected
– If the tire pressure monitoring is faulty
– When learning newly mounted wheels/wheel
sensors, as long as the vehicle’s own wheels
have not yet been recognized.
The tire pressure warning light in the instrument
panel goes out only when the cause of the fault
has been rectified.
No monitoringIn the event of faults the tire pressure monitoring
cannot monitor the tire pressure.
The warning light on the instrument panel lights up
and a corresponding message appears on the
on-board computer.
Monitoring is not active when:
– the tire pressure monitoring is faulty,
– wheel transmitters for the tire pressure
monitoring are missing,
– temporarily after changing a wheel (learning
phase),
– more than four wheel transmitters are
detected,
– there is external interference by other radio
sources, e.g. wireless headphones,
– tire temperatures are too high.
fPlease observe the chapter “WARNINGS ON
THE INSTRUMENT PANEL AND THE ON-
BOARD COMPUTER” on Page 122.
Pressure increase as the result of
temperature increaseA Tire pressure
B Tire temperature
C Tire pressures for cold tires
D Tire pressure for hot tires
E Pressure increase as the result of temperature
increase
F Pressure drop in faulty/leaking tires
1. Required-pressure line
2. Warning stage 1 (from –3 to –6 psi
(–0.2 bar to –0.4 bar))
3. Warning stage 2 (from –6 psi (–0.4 bar))
Warning light

Controls, Instruments
117
In accordance with physical principles, the air
pressure changes as the temperature changes.
The tire pressure increases or decreases by
around 1.5 psi (0.1 bar) for every 18°F (10°C)
change in temperature.
The tire pressure monitoring takes this relation-
ship between tire pressure and temperature into
account.
Tire pressure specificationsInformation on tire pressure for public roads can
be found in this Owner's Manual or on the tire-
pressure plate in the left door aperture.
These values apply to cold tires at 68°F (20°C)
ambient temperature.

120
Controls, Instruments
SET
Basic setting on on-board computerSwitching on selection field “D”
fPush operating lever forward.
Changing the basic setting of the on-board
computer
fSelect “SET” with the operating lever.fPush operating lever forward.
fSelect the desired function with the operating
lever:Reset
– Reset all,
Reset average consumption,
Reset average speed,
Reset trip counter
Units
– Speedometer
km - km/h, miles - mph
–Consumption
l/100 km, mls/gal (USA), mpg (UK), km/l
–Temperature
°Celsius, °Fahrenheit
– Tire pressure
bar, psi
Display
(Select central line of the on-board
computer)
–Change display
Audio information (set radio station)
Range on remaining fuel
Empty
–Te l e p h o n e I n f o
When Telephone information is active, incom-
ing telephone calls are displayed on the on-
board computer.

Controls, Instruments
121
Navigation
– Integrated in the BC
(Navigation instructions can be recalled on the
on-board computer display)
– When turning off
(Navigation instructions are only shown before
changing direction)
Basic setting
– Restore the basic setting of the on-board com-
puter
Language
– Select language version
12/24h mode
– Select time mode:
12h (small squares on the right side of the time
display for AM/PM),
24h
General information regarding the
on-board computer functionsRange on remaining fuel
The range on remaining fuel is continuously recal-
culated during the journey based on the fuel level,
current consumption and average consumption.
The more the fuel level falls, the more spontan-
eously the display reacts. For this reason, the
range on remaining fuel is not displayed if less
than 9 miles (15 kilometers).
If the vehicle's inclination changes while driving or
refuelling, incorrect range information may tempo-
rarily be given.
Note
If the tank is nearly empty and you top up with only
a small quantity of fuel, an accurate range on re-
maining fuel is impossible.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 battery will cause these
memories to be erased.
memories to be erased.
Tire pressure
The Tire pressure function of the on-board com-
puter displays the tire 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. To correct the
tire pressures, always use the displayed values
from the “Info pressure” display in the Tire pres-
sure menu.