Porsche Cayman Owner's Manual page 148

Instrument panel
Acknowledging warning messages
Warning messages can be deleted from the on-board computer display.
Push the on-board computer operating lever forward.
You can recall erased warning messages in the "INFO" menu.
146
Controls, Instruments
On-board computer Text display on on-board
computer
TPC inactive
Brief disturbance
TPC inactive
Too many wheel transmitters
Wheel change?
Input new TPC settings
TPC
Indicator faulty
Meaning/measure
The Tire Pressure Monitoring
is temporarily deactivated by
excessive tire temperatures
(approx. 120 C (248F)) or
external interference (e.g. from
other wheel transmitters inside
the car). Once the source of the
interference is removed, the system
is automatically reactivated.
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.
The display of the Tire Pressure
Monitoring system is faulty. Consult
your authorized Porsche dealer.