Porsche Cayman Owner's Manual page 99

Warning light
The warning light in the instrument panel lights up:
– When a loss in pressure has been detected.
– In the event of a defect in Tire Pressure
Monitoring System or a temporary fault.
– When learning new fitted wheels/wheel
transmitters, as long as the vehicle's own
wheels have not yet been recognized.
A warning message also appears on the multi-
function display in the instrument panel.
f
Please see the chapter "OVERVIEW OF
WARNING AND INFORMATION MESSAGES"
on page 114.
The tire pressure warning light on the instrument
panel goes out only when the cause of the fault
has been rectified.
Changing a wheel and replacing tires
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New wheels must be fitted with radio
transmitters for Tire Pressure Monitoring
System.
Before tires are changed, the battery charge
condition of the wheel transmitters should be
checked.
We recommend that you get an authorized
Porsche dealer to do this work as they have
trained workshop personnel and the necessary
parts and tools.
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Switch off the ignition when changing a wheel.
The tire settings on the multi-function display must
be updated after changing a wheel.
If the tire settings are not updated, the message
"Tire change? Update settings" is displayed on
the multi-function display.
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Update the multi-function display settings the
next time the vehicle is stationary.
Pressure increase as the result of
temperature increase
In accordance with physical principles, the tire
pressure changes as the temperature changes.
For every 18 °F (10 °C) change in temperature,
the tire pressure increases or decreases by
approx. 1.5 psi (0.1 bar/10 kPa).
Partial monitoring
Monitoring of the other wheels is continued if there
is a fault in one or two wheel transmitters.
– The tire pressure warning light lights up.
– The message "Restricted monitoring"
appears on the multi-function display.
– No tire pressures are displayed on the
multi-function display for wheels with faulty
wheel transmitters.
No monitoring
In the event of faults, Tire Pressure Monitoring
System cannot monitor the tire pressure.
The warning light on the instrument panel lights up
and a corresponding message appears on the
multi-function display.
Monitoring is not active:
– If Tire Pressure Monitoring System is faulty.
– If wheel transmitters for Tire Pressure
Monitoring System are missing.
– During the learning phase after the tire settings
have been updated.
– After a wheel change without updating the tire
settings.
– If more than four wheel transmitters are
recognized.
– If there is external interference by other radio
sources, e.g. wireless headphones.
– If tire temperatures are too high.
f
Please see the chapter "OVERVIEW OF
WARNING AND INFORMATION MESSAGES"
on page 114.
Instrument Panel and Multi-Function Display
97