2005 PORSCHE CAYENNE TURBO change wheel

Controls, Safety, Instruments
87
Tire pressure monitoring system learning
phaseEach time a wheel is changed, the tire pressure
monitoring system must complete the learning
phase again. The tire pressure monitoring system
identifies the wheel positions in this process.
The current tire pressures will not be available on
the multi-purpose display until the learning phase
is complete.
Tire pressure monitoring system learning
process
fSelect tire type and tire size in the menu TYRE
PRESSURE > SETTINGS > TYRES.
The learning process is started. The tire type
and size must be selected even if the settings
for the new set of wheels are the same as for
the old wheels.Note
The spare wheel and collapsible spare wheel do
not contain a wheel transmitter and are not moni-
tored by the tire pressure monitoring system.
The tire pressures for cold tires (68°F/20°C) are
shown in the TYRE PRESSURE menu (filling infor-
mation) during the learning phase.
The required pressure for the spare wheel is al-
ways displayed in the TYRE PRESSURE menu (fill-
ing information).
fCheck the tire pressure for the spare wheel
and collapsible spare wheel manually.
Tire pressure filling informationTire pressure menuThe TYRE PRESSURE menu provides an overview
of the current pressure specifications for the re-
spective wheel (filling information). The pressure
differences with respect to the required pressure
are specified irrespective of the tire temperature.
If the wheels have not been learned, the current
pressures are unavailable.
The spare wheel is not monitored. The required
pressure is specified in brackets.
To make changes to the settings of the tire pres-
sure monitoring system, select SETTINGS in the
TYRE PRESSURE menu.

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Tire pressure warnings and
messagesThe 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.
fStop 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
3psi.
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.
fCorrect the tire pressure.
Message indicating tire pressure lossThis 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.
fThe message is displayed for 10 seconds or
fPress RESET switch.
Note on operation
fCorrect the tire pressure at the next opportuni-
ty. When correcting the tire pressure, add only
the pressure differences shown in the "Ty re
pressure" menu.
Message indicating tire pressure loss for
a wheelThe 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.
fThe message is displayed for 10 seconds or
fPress RESET switch.
Note on operation
fCorrect the tire pressure at the next opportuni-
ty. When correcting the tire pressure, add only
the pressure differences shown in the "Ty re
pressure" menu.

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Controls, Safety, Instruments
Message indicating a flat tire while the
system is learningThis warning message indicates a flat tire with a
pressure loss of at least 6 psi (0.4 bar).
The system has not identified the wheel positions
yet; the tire pressures are not displayed.
This warning cannot be acknowledged.
fStop the vehicle in a suitable place. Check the
tires for signs of damage and change them if
necessary.
When the vehicle is stationary, the screen changes
to SELECTION AFTER WARNING.
Message indicating a flat tire after the
learning phase has been completedThis warning message indicates a flat tire with a
pressure loss of at least 6 psi (0.4 bar).
The system has identified the wheel positions. The
deviation from the required pressure is displayed
for the corresponding wheel.
This warning cannot be acknowledged.
fStop the vehicle in a suitable place. Check the
tires for signs of damage and change them if
necessary.
When the vehicle is stationary, the screen changes
to SELECTION AFTER WARNING.

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Selection after warningWhen the vehicle is stationary after a tire pressure
warning, the screen changes to SELECTION AF-
TER WARNING.
fIn the menu, select the task performed.Adding air
fAfter inflating the wheel in question, select
ADD AIR.
The display returns to the basic screen after
acknowledgement.
For vehicles without air suspension
fPlease observe the chapter “REDUCING FIL-
LING PRESSURE ON VEHICLES WITHOUT AIR
SUSPENSION” on Page 296.
For vehicles with air suspension
fPlease observe the chapter “REDUCING TIRE
PRESSURE ON VEHICLES WITH AIR SUSPENSI-
ON” on Page 298.
Wheel change
fFor changing a wheel, select menu item
WHEEL CHANGE.
The display returns to the SPARE WHEEL menu
after acknowledgement.
fSelect spare wheel type.
fPlease observe the chapter “SPARE WHEEL”
on Page 90.
fPlease observe the chapter “LIFTING THE VE-
HICLE WITH A JACK” on Page 290.Sealing set
fAfter repairing the flat with the tire sealant, se-
lect menu item SEALING SET.
fPlease observe the chapter “TIRE SEALANT”
on Page 288.
fPlease observe the chapter “TIRE SEALANT/
SEALING SET” on Page 91.
The display returns to the basic screen after se-
lecting SEALING SET.
A warning appears on the multi-purpose display if
the speed limit of 50 mph (80 km/h) is exceeded.
Note on operation
If you make a selection without performing the
action described in the selection, the message
CAUTION – FLAT TYRE – CHECK TYRES will
appear again.
fCheck the tires for signs of damage and fill or
change them if necessary.

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Warning “When vehicle stops,
Hit selection”If you drive off after changing a wheel or inflating
the tires and neglect to make a selection in the
screen SELECTION AFTER WARNING, the following
message will appear:
WHEN VEHICLE STOPS, HIT SELECTION.
fThe next time you stop the vehicle, perform
the settings in the “Selection after warning”.
Wheel change messageThe WHEEL CHANGE? message CHECK
SETTINGS appears after a wheel change, if the
tire type and tire size of the new tires have not
been set in the TYRE PRESSURE > SETTINGS
menu.
When the vehicle is stationary, the display
changes to SELECTION AFTER WARNING.
fPlease observe the chapter “SELECTION
AFTER WARNING” on Page 95.
fSelect WHEEL CHANGE. The menu automati-
cally changes to TYRE TYPE.
fSelect the appropriate tire type and tire size.
Only if the tire type and size are selected will
the tire pressure monitoring system re-learn
the tires.
Message “Spare wheel or sealing set
operation”The message SPARE WHEEL OR SEALING SET
OPERATION? appears after switching on the igni-
tion if a spare wheel type (spare wheel, collapsible
spare wheel, or sealing set) was set.
fSelect YES or NO with the rocker switch.
fPress RESET switch.

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97
Ye s :
– In case of sealing-set operation, the menu
changes directly to the basic screen. All
settings are retained.
– If the vehicle is operated with a collapsible
spare wheel or spare wheel, the warning mes-
sage “SYSTEM NOT ACTIVE, WORKSHOP” is
initially displayed for 10 seconds. The system
then returns to the basic screen.
No:
The display automatically returns to the menu
TYRE PRESSURE > SETTINGS.
fSet the mounted tire set with tire type and tire
size. The system will re-learn the tires.
No monitoringIn the event of faults the tire pressure monitoring
cannot monitor the tire pressure.
The warning light on the instrument panel and a
message on the multi-purpose display light up.
Monitoring is not active when:
– the tire pressure monitoring system is faulty,
– wheel transmitters for the tire pressure
monitoring system are not present,
– temporarily after changing a wheel,
– has detected too many wheel transmitters,
– there is external interference by other radio
sources, e.g., wireless headphones,
– Tire temperatures are too high.
fPlease observe the chapter “WARNING LIGHTS
AND WARNING MESSAGES” on Page 106.All warnings and messages in the tire pressure
monitoring system are also indicated by the
warning light in the instrument panel.
The warning light goes out as soon as all faults are
remedied.
Tire pressure monitoring warning
light

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Controls, Safety, Instruments
Pressure increase as the result of
temperature increaseA - Tire pressure
B - Tire temperature
C - Tire pressure for cold tires
D - Tire pressure for hot tires
E - Pressure increase as the result of temperature
increase
F - Pressure drop in faulty/leaking tires
1 - Required-pressure line
2 - Notification of tire-pressure loss (-3 to -6 psi/from -0.2
to - 0.4 bar)
3 - Flat-tire warning (as of -6 psi/-0.4 bar)
In accordance with physical principles, the air
pressure changes as the temperature changes.
The tire pressure increases or decreases by
around 1.5 psi (0.1 bar) for a temperature change
of 50°F (10°C).Tire pressure specificationsThe tire pressure must match the prescribed value
(required pressure).
You can find information on the tire pressure for
cold tires (68°F/20°C):
– In the TYRE PRESSURE menu (filling informa-
tion):
As a deviation from the required pressure for
each wheel if the system has learned the
values.
– In the TYRE PRESSURE menu (filling informa-
tion):
As a required pressure for each axle if the
system has not learned the values.
– And in the front left door aperture for each
wheel.
fPlease observe the chapter “TIRE PRESSU-
RES, COLD” on Page 350.
Insufficient tire pressure can cause tires to
overheat and thus be damaged – even invisibly.
Hidden tire damage is not eliminated by subse-
quently correcting the tire pressure.
fPlease observe the chapter “TIRES/WHEELS”
on Page 269.

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107
Check low beam Check bulb.
Check trailer lights Check bulb.
Check direction indicators Check turn signal bulb.
Check brake lights Check bulb.
Check high beam Check bulb.
Check number plate light Check bulb.
Check fog lights Check bulb.
Check reversing lights Check bulb.
Check tail lights Check bulb.
Check front side lights Check bulb.
Check headlight beam adjustment Have the fault remedied at an authorized Porsche dealer.
Daytime driving lights off Daytime driving lights switch off when the engine is shut off.
Switch on lights if necessary.
Airbag faulty Have the fault remedied at an authorized Porsche dealer.
Safety belt Fasten safety belt.
Warning – Flat tire – Check tires Stop in a suitable place and check the tires. Change wheel if
necessary.
Check spare wheel – Required pressure:
50 psi/3,4 barAppears about every 6 months.
Check if the pressure of the mounted spare wheel matches the
required pressure, as it is not monitored electronically.
Instrument
panelMulti-purpose
displayText display Meaning/measures