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.
128
Controls, Instruments
Add air The tyre pressure monitoring system has
detected a gradual pressure loss. Correct tyre
pressure at the next opportunity.
TPC inactive
System learningThe tyre pressure monitoring system is learning
the wheels on the vehicle. The tyre pressure
monitoring system is searching for the tyres
and their position. During this period the current
pressure specifications are not available on the
on-board computer.
TPC inactive The tyre pressure monitoring system is faulty.
Consult a qualified specialist workshop.*
TPC inactive
Brief disturbance
TPC inactive
Too many wheel transmittersThe tyre pressure monitoring system is tempo-
rarily deactivated by excessive tyre tempera-
tures (approx. 120 °C (248°F)) or external
interference (e.g. from other wheel transmitters
inside the car). Once the source of the interfer-
ence is removed, the system is automatically
reactivated.
Wheel change?
Input new
TPC settings!Update the settings in the TPC menu of the
on-board computer at the next opportunity.
Wrong entries will affect the correct pressure
information in the menu. The safety of your
vehicle is at risk.
TPC
Indicator faultyThe display of the tyre pressure monitoring
system is faulty.
Consult a qualified specialist workshop.*
Instrument
panelOn-board
computerText display on on-board
computerMeaning/measure
