Porsche Cayman Owner's Manual page 119

Warning light
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 monitoring
In 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 detec-
ted,
– there is external interference by other radio
sources, e.g. wireless headphones,
– tire temperatures are too high.
f Please see the chapter "WARNINGS ON THE
INSTRUMENT PANEL AND THE ON-BOARD
COMPUTER" on Page 126.
119
Controls, Instruments