Porsche Cayenne Turbo Driver Manual page 132

f Incomplete entries or selection of the wrong
tyres on the multi-purpose display affect
correct indication of warnings and messages.
The settings in the TYRE PRESSURE menu
must be updated after wheel changes, use of
a spare wheel or changes in vehicle loading.
f Use only the pressure differences shown in the
TYRE PRESSURE menu or from tyre pressure
messages or warnings when correcting the
tyre pressure.
f Tyres lose air over time without a tyre defect
being present. A tyre pressure warning will
then appear on the multi-purpose display.
Correct tyre pressure.
132
Multi-Purpose Display and Instruments
Functional description of Tyre Pressure
Monitoring
Tyre Pressure Monitoring continuously monitors
tyre pressure and tyre temperature on all four
wheels and warns the driver when the tyre
pressure is too low.
The display as well as the settings for Tyre
Pressure Monitoring take place on the
multi-purpose display in the sub-menu
TYRE PRESSURE.
However, the tyre pressure must still be set
manually on the wheel.
The deviations in the tyre pressures from the
required pressures are shown in the sub-menu
TYRE PRESSURE.
Example:
If the tyre pressure display shows "–0.3 bar
(–4 psi)", you must increase the tyre pressure by
0.3 bar (4 psi).
The tyre pressures to be monitored are fixed in the
Tyre Pressure Monitoring system and cannot be
changed.
The following settings must be made to permit
correct monitoring.
– Tyres
Select the type and size of the tyres fitted on
the vehicle.
– Load
Select the type of loading.
Note on operation
Settings can be made only when the vehicle is
stationary.
f For information on tyres and wheels:
Please observe the chapter "TYRES AND
WHEELS" on Page 285.