Porsche Cayenne 2005 Owner's Manual page 93

Tire pressure warnings and
messages
The tire pressure monitoring system warns about
loss in pressure in two stages, depending on the
amount of pressure loss:
Stage 1 – Tyre pressure too low message
(3 to 6 psi (0.2 to 0.4 bar) loss in pressure)
Stage 2 – Flat tire warning
(loss in pressure as of 6 psi (0.4 bar))
Warning!
Risk of accident. Tire damage may impair
road safety.
f Stop the vehicle at a suitable location if there
is a tire pressure warning or tire pressure mes-
sage. Check the tires for signs of damage and
fill or change them if necessary.
Example: If the tire pressure display shows
"– 3 psi", you must increase the tire pressure by
3 psi.
Tires can lose air over time without a tire defect
being present. The tire pressure monitoring sys-
tem will then issue a corresponding message or
warning.
f Correct the tire pressure.
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Message indicating tire pressure loss
This message indicates a pressure loss of be-
tween 3 and 6 psi (0.2 and 0.4 bar) if the wheel
positions have not been identified.
This message appears when the vehicle is station-
ary and the ignition is switched on again.
f The message is displayed for 10 seconds or
f Press RESET switch.
Note on operation
f Correct the tire pressure at the next opportuni-
ty. When correcting the tire pressure, add only
the pressure differences shown in the "Tyre
pressure" menu.
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Message indicating tire pressure loss for
a wheel
The system has identified the wheel positions. The
deviation from the required pressure is displayed
for the corresponding wheel.
This message indicates a pressure loss of be-
tween 3 and 6 psi (0.2 and 0.4 bar).
This message appears when the vehicle is station-
ary and the ignition is switched on again.
f The message is displayed for 10 seconds or
f Press RESET switch.
Note on operation
f Correct the tire pressure at the next opportuni-
ty. When correcting the tire pressure, add only
the pressure differences shown in the "Tyre
pressure" menu.
Controls, Safety, Instruments
93