Porsche cayman gt4 Owner's Manual page 89

and tire tread life, and may affect the vehicle's
handling and stopping ability.
The display as well as the settings for the Tire
Pressure Monitoring System take place on the
multi-fuction display.
However, the tire pressure must still be set
manually on the wheel.
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Please see the chapter "TIRE PRESSURE FOR
COLD TIRES (68 °F/ 20 °C)" on page 221.
h
Maintaining tire pressure
WARNING
Driving the vehicle with low tire pressure increases
the risk of a tire failure and resulting loss of
control. Furthermore, low tire pressure increases
rate of wear of the affected tires.
Please note that the Tire Pressure Monitoring
System is not a substitute for proper tire
maintenance, and it is the driver's responsibility to
maintain correct tire pressure, even if under-
inflation has not reached the level to trigger
illumination of Tire Pressure Monitoring System
low tire pressure telltale. Low tire pressure
reduces the road safety of the vehicle and
destroys the tire and wheel.
Tire Pressure Monitoring System gives a warning
about tire damage caused by a natural loss in
pressure as well as about a gradual loss of
pressure caused by foreign objects.
Tire Pressure Monitoring System cannot warn you
about tire damage that occurs suddenly (e.g. flat
tire due to abrupt external effects).
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When a red tire pressure warning appears,
stop immediately in a suitable place and check
the tires for damage. If necessary, remedy the
damage with a tire sealant.
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Do not by any means continue to drive with
defective tires.
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Sealing the tire with tire sealant is only an
emergency repair so you can drive to the
nearest authorized Porsche dealer.
The maximum permitted speed is 50 mph
(80 km/h).
3. Do not drive with tires in which the tire
pressure drops again very quickly. In case of
doubt, have tires checked by an authorized
Porsche dealer.
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Defective tires must be replaced immediately
at an authorized Porsche dealer.
Tires must never be repaired under any
circumstances.
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If Tire Pressure Monitoring System is defective
(e.g. defective wheel transmitter), contact an
authorized Porsche dealer immediately and
have the damage repaired.
The tire pressure will not be monitored at all
or will be monitored only partially when Tire
Pressure Monitoring System is defective.
For information on warning messages on the multi-
function display:
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Please see the chapter "OVERVIEW OF
WARNING AND INFORMATION MESSAGES"
on page 109.
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Incomplete entries or selection of the wrong
tires on the multi-function display affect the
accuracy of warnings and messages.
The settings in the tire pressure menu must be
updated following a wheel change or changes
in vehicle loading.
f
Use only the pressure differences shown in the
"Fill info" display in the Tire pressure menu
or from the corresponding tire pressure
warning when correcting the tire pressure.
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Tires can lose air over time without a tire
defect being present. A tire pressure warning
will then appear on the multi-function display.
Check the tire pressure at the next opportunity.
Warning light
h
WARNING Attention to TPMS
malfunction indicator
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system
is not operating properly.
The TPMS malfunction indicator is combined with
the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately one minute and
then remain continuously illuminated. This
sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the
system may not be able to detect or signal low tire
pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of replacement
or alternate tires or wheels on the vehicle that
prevent the TPMS from functioning properly.
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Always check the TPMS malfunction telltale
after replacing one or more tires or wheels on
your vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to
continue to function properly.
Instrument Panel and Multi-Function Display
87