tyre pressure PORSCHE CAYNNE 2004 1.G Owners Manual

Multi-Purpose Display and Instruments
127
Displaying/resetting average
speed
Displaying range on remaining fuelThe range on remaining fuel is continuously
recomputed while driving based on fuel level,
current consumption and average consumption.
Displaying tire pressureThis display is available only in conjunction with the
Tire Pressure Monitoring option.
The current tire pressures at the actually present
levels are displayed in the “Tyre pressure” screen
of the on-board computer. These values would be
identical to those of a pressure gage connected to
the four valves. These pressures change while the
vehicle is being driven.
– The tire pressures increase as the temperature
in the tires rises, e.g. during high-speed
motorway driving.
– The tire pressures decrease as the tempera-
tures drop, e.g. during trips in cold regions
(such as mountains).
The values displayed therefore do not allow
conclusions to be drawn about possible pressure
deviations.
fIn order to display pressure deviations from
the prescribed pressure, select the menu item
TYRE PRESS. in the MAIN MENU.
Displaying compassThis display is available only in conjunction with the
Compass or PCM option.Displaying navigation informationNavigation information can also be displayed on
the multi-purpose display.
This display is available only in conjunction with the
Navigation (PCM) option. Displaying average speed
1.Switch ignition on.
2.Select Ø MPH.
The average speed is displayed.
The displayed values are based on the
distance travelled since the last reset to
“zero”.
Resetting average speed
3.Select Ø MPH.
The average speed is displayed.
4.Press the ENTER button for longer than
1second.
1.Switch ignition on.
2.Select remaining range.1.Switch ignition on.
2.Select TYRE PRESS.1.Switch ignition on.
2.Select COMPASS.
1.Switch ignition on.
2.Select NAVIGATION.
The navigation arrows are displayed.
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Multi-Purpose Display and Instruments
133
fIf a tire pressure message is displayed, correct
the tire pressure at the next opportunity.
fIncomplete entries or selection of the wrong
tires 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.
fUse only the pressure differences shown in the
TYRE PRESSURE menu or from tire pressure
messages or warnings when correcting the
tire pressure.
fTires lose air over time without a tire defect
being present. A tire pressure warning will then
appear on the multi-purpose display.
Correct tire pressure.
Functional description of Tire Pressure
MonitoringTire Pressure Monitoring continuously monitors
tire pressure and tire temperature on all four
wheels and warns the driver when the tire
pressure is too low.The display as well as the settings for Tire
Pressure Monitoring take place on the multi-
purpose display in the sub-menu
TYRE PRESSURE.
However, the tire pressure must still be set
manually on the wheel.
The deviations in the tire pressures from the
required pressures are shown in the sub-menu
TYRE PRESSURE.
Example:
If the tire pressure display shows “–4 psi
(–0.3 bar)”, you must increase the tire pressure by
4 psi (0.3 bar).
The tire pressures to be monitored are fixed in the
Tire Pressure Monitoring system and cannot be
changed.
The following settings must be made to permit
correct monitoring.
–Tires
Select the type and size of the tires fitted on
the vehicle.
–Load
Select the type of loading.
Note on operation
Settings can be made only when the vehicle is
stationary.
fFor information on tires and wheels:
Please see the chapter “TIRES/WHEELS” on
Page 281.
Warning!
Your vehicle has also been equipped with a TPM
malfunction indicator to indicate when the system
is not operating properly.
The TPM 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.
TPM malfunctions may occur for a variety of
reasons, including the installation of replacement
or alternate tires or wheels on the vehicle that
prevent the TPM from functioning properly.
Always check the TPM 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 TPM to continue to
function properly.Warning light
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134
Multi-Purpose Display and Instruments
Setting the tire type and size
Warning!
Incomplete entries or selection of the wrong
tires on the multi-purpose display affect
correct indication of warnings and
messages.
fThe settings must be updated in the TYRE
PRESSURE menu after changing a wheel, filling
with tire sealant or adding air (after previous
warning “Flat tyre”).
fPlease see the chapter ““FLAT TYRE” WARNING” on Page 136.
The settings of the multi-purpose display must be
updated after changing wheels or tires on the
vehicle.
The tire type and tire size must be selected even
if the settings for the new set of wheels are the
same as for the old wheels.Note on operation
fFor information on the operating principle of
the multi-purpose display:
Please see the chapter “OPERATING
PRINCIPLE” on Page 124.After driving off, the system starts to teach the
wheels and wheel positions on the vehicle. During
this time, the tire pressure warning light on the
speedometer flashes about 60 seconds and lights
up thereafter permanently, and no current tire
pressure information is available on the displays.
Note
Information on the tire size and type can be found
on the tire sidewall. For further information on the
details on the tire sidewall:
fPlease see the chapter “INSCRIPTION ON
RADIAL TIRE” on Page 290.
Note on operation
Before fitting tires approved by Porsche with a
size which is not already stored in the multi-
purpose display, the missing information should
be supplemented in the multi-purpose display.
fGo to an authorized Porsche dealer
immediately.
1.MAIN MENU
>TYRE PRESS.
>SETTINGS
Select and confirm.
2.Select TYRES.
3.Confirm selection.
The TYRE TYPE list is displayed.
4.Select tire type (e.g. SUMMER).
The list with the possible tire sizes (e.g. for the
selection SUMMER) is displayed.
5.Select tire size (e.g. 18 inch).
6.Confirm selection.
The current settings are displayed.
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Multi-Purpose Display and Instruments
135
Warning!
Risk of accident due to excessive speed. This
could lead to serious personal injury or
death.
fAlways observe the permissible maximum
speed of the respective tire.
fExceeding maximum tire speed could result in
a tire burst, causing loss of control of the
vehicle. This could lead to serious personal
injury or death.
Moreover, Porsche recommends obeying all
traffic laws at all times to maintain the safety of yourself and all vehicle occupants.
The speed code letter indicates the maximum
permissible speed for the tire.
fThis letter appears on the tire sidewall:
Please see the chapter “INSCRIPTION ON
RADIAL TIRE” on Page 290.
Setting vehicle loading and adjusting tire
pressureThe tire pressure must be adjusted according to
the vehicle load.
A distinction is made between two types of
loading:
– Partial load
up to 3 people and 46 lbs (21 kg) of luggage
–Full load
more than 3 people and 46 lbs (21 kg) of
luggage
1.MAIN MENU
>TYRE PRESS.
>SETTINGS
Select and confirm.
2.Select LOAD.
3.Confirm selection.
The LOAD menu is displayed.
Select corresponding load type (e.g. FULL
LOAD).
4.Confirm selection.
The set load status is shown.
Deviations from the required pressure are shown
in the sub-menu MAIN MENU>TYRE
PRESSURE>SETTINGS (filling information).
fCorrect the tire pressure according to this
information.
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136
Multi-Purpose Display and Instruments
“Flat tyre” warningThe warning threshold for output of this warning
message is speed-dependent.
At a speed of below 100 mph (160 km/h), this
warning indicates a pressure loss of at least 7 psi
(0.5 bar); at a speed of above 100 mph
(160 km/h), the warning indicates a pressure loss
of at least 6 psi (0.4 bar). The message indicates
the wheel in which the pressure loss has been
detected. The deviation from the required
pressure is displayed for the corresponding
wheel. The tire pressure warning light on the
speedometer lights up in addition to the warning
message. This significant pressure loss is a
danger to road safety.
fThe warning message can be acknowledged
while driving.
To do this, press the ENTER button on the
wiper stalk. The tire pressure warning light on
the speedometer remains lit.
The measure display SELECTION AFTER
WARNING appears only after the ignition is
switched back on again.
The display shows: SELECTION AFTER WARNING1. Stop the vehicle immediately in a suitable
place.
2. Check the indicated wheel for damage.
3. Fill the tire or change the wheel, as appro-
priate.
- Adding air
Example: If the tire pressure display shows
“–7 psi (---0.5 bar)”, you must increase the tire
pressure by 7 psi (0.5 bar).
On vehicles without air suspension:
Please see the chapter “CHECKING TIRE
PRESSURE WITH A PRESSURE GAGE” on
Page 306.
On vehicles with air suspension:
Please see the chapter “INFLATING TIRES ON
VEHICLES WITH AIR SUSPENSION” on
Page 308.
or- Changing wheel with spare wheel or
collapsible spare wheel
For information on jacking up the vehicle:
Please see the chapter “LIFTING THE VEHICLE
WITH A LIFTING PLATFORM OR GARAGE LIFT”
on Page 298.
For information on changing a wheel:
Please see the chapter “LIFTING THE VEHICLE
WITH A JACK” on Page 299.
or
- Sealing with tire sealant.
For information on handling and filling the
sealant: Please see the chapter “USING TIRE
SEALANT” on Page 296.
4. Switch ignition on again.
The “Flat tyre” warning first appears again on
the multi-purpose display. The display changes
to SELECTION AFTER WARNING after a few
seconds.
5. Select the action which has been carried out
on the vehicle on the display with the rocker
switch.
- ADD AIR or
- WHEEL CHANGE > SPARE WHEEL > Spare
wheel type or
- SEALING SET
6. Press the ENTER button.
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Multi-Purpose Display and Instruments
137
Warning!
Risk of accident, resulting in serious
personal injury or death. The spare wheel
and collapsible spare wheel are not equipped
with wheel transmitters and are not
monitored by Tire Pressure Monitoring.
fThe spare wheel and collapsible spare wheel must be used only over short distances. Warning!
Risk of accident resulting in serious personal
injury or death if a collapsible spare wheel or
tire sealant is in use.
fAvoid hard acceleration and high cornering
speeds.
fDo not exceed maximum speed of 50 mph
(80 km/h).
fPlease observe the safety and operating
instructions on the tire compressor.
fHave the tire or wheel replaced by an
authorized Porsche dealer as soon as possible.Note
If a collapsible spare wheel or tire sealant is used,
a warning reminder appears on the multi-purpose
display if the speed limit of 50 mph (80 km/h) is
exceeded.
Note on operation
If you do not confirm a selection or confirm a
selection without carrying out the task described
for this selection, this will affect correct indication
of warnings and messages.
Depending on the selection made, a corre-
sponding message will appear when the ignition is
switched on, when driving off or while driving.
For further information on warning messages on
the multi-purpose display:
Please see the chapter “OVERVIEW OF WARNING
MESSAGES” on Page 149.
“Tyre pressure too low” messageThis message indicates pressure loss of at least
4 psi (0.3 bar).
The message indicates the wheel in which the
pressure loss has been detected. The deviation
from the required pressure is displayed for the
corresponding wheel.
The message appears only when the vehicle is
stationary. It appears for the first time when the
ignition is switched off and then each time the
ignition is switched on until the tire pressure has
been corrected to the required value.
The message is shown for 10 seconds on the
multi-purpose display. It can be suppressed
immediately by pressing the ENTER button.
fCheck the tire pressure at the next opportunity
and fill the tires.
Example: If the tire pressure display shows
“–4 psi (–0.3 bar)”, you must increase the tire
pressure by 4 psi (0.3 bar).
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138
Multi-Purpose Display and Instruments The spare wheel and collapsible spare wheel are
not equipped with wheel transmitters and are not
monitored by Tire Pressure Monitoring.
Wheel change (without warning)The settings of the multi-purpose display must be
updated after changing wheels or tires on the
vehicle.
Please see the chapter “SETTING THE TIRE TYPE
AND SIZE” on Page 134.Setting spare wheel/sealant (without
warning)If you have fitted a spare wheel or collapsible
spare wheel or used tire sealant without being
requested to do so by a “Flat tyre” warning on the
multi-purpose display, you must subsequently
update the settings in the TYRE PRESSURE sub-
menu.Setting spare wheel.
The spare wheel is not equipped with a wheel
transmitter and is not monitored by Tire Pressure
Monitoring. The tire pressure warning light on the
speedometer flashes about 60 seconds and lights
up thereafter permanently when the ENTER button
is pressed. The value “_” is displayed in the sub-
menu TYRE PRESSURE (filling information) at the
position of the spare wheel.
The reminder SPARE WHEEL/SEALING SET
OPERATION? appears each time the ignition is
switched on. For information on spare wheel/
sealing set operation: Please see the chapter
“NOTE ON SPARE WHEEL/SEALING SET OPERA-
TION” on Page 140.
1.MAIN MENU
>TYRE PRESS.
>SETTINGS
> TYRES
> SPARE WHEEL
Select and confirm.
2.Select SPARE WHEEL.
3.Confirm selection.
The display automatically returns to the TYRE
PRESSURE sub-menu (filling information).
The required tire pressures are displayed
here.
Select BACK.
4.Confirm selection.
The basic display appears.
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Multi-Purpose Display and Instruments
139
Warning!
Risk of accident, resulting in serious
personal injury or death. The spare wheel is
not equipped with a wheel transmitter and is
not monitored by Tire Pressure Monitoring.
fThe spare wheel must be used only over short
distances.
For information on handling and fitting/
removing the spare wheel: Please see the chapter “SPARE WHEEL” on Page 309.Setting collapsible spare wheel.
The collapsible spare wheel is not equipped with a
wheel transmitter and is not monitored by Tire
Pressure Monitoring. The tire pressure warning
light on the speedometer flashes about
60 seconds and lights up thereafter permanently
when the ENTER button is pressed. The value “_”
is displayed in the sub-menu TYRE PRESSURE
(filling information) at the position of the
collapsible spare wheel.
A warning appears on the multi-purpose display if
the speed limit of 50 mph (80 km/h) is exceeded.
The reminder SPARE WHEEL/SEALING SET
OPERATION? appears each time the ignition is
switched on.
For information on spare wheel/sealing set opera-
tion: Please see the chapter “NOTE ON SPARE
WHEEL/SEALING SET OPERATION” on Page 140.
Warning!
Risk of accident, resulting in serious
personal injury or death. The collapsible
spare wheel is not equipped with a wheel
transmitter and is not monitored by Tire
Pressure Monitoring.
fThe collapsible spare wheel must be used only
over short distances.
For information on handling the collapsible
spare wheel: Please see the chapter “COLLAPSIBLE SPARE WHEEL” on Page 305. Warning!
Risk of accident, resulting in serious
personal injury or death if a collapsible spare
wheel is in use.
fAvoid hard acceleration and high cornering
speeds.
fDo not exceed maximum speed of 50 mph
(80 km/h).
fPlease observe the safety and operating
instructions on the tire compressor.
fHave the collapsible spare wheel replaced by
an authorized Porsche dealer as soon as possible.
1.MAIN MENU
>TYRE PRESS.
>SETTINGS
> TYRES
> SPARE WHEEL
Select and confirm.
2.Select COLLAP. WHEEL.
3.Confirm selection.
The required pressure and speed limit for the
collapsible spare wheel are displayed.
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140
Multi-Purpose Display and Instruments Setting tire sealant/sealing set
fInflate tires according to the displayed
pressure differences.
A warning appears on the multi-purpose display if
the speed limit of 50 mph (80 km/h) is exceeded.
The reminder SPARE WHEEL/SEALING SET
OPERATION? appears each time the ignition is
switched on.
For information on spare wheel/sealing set opera-
tion: Please see the chapter “NOTE ON SPARE
WHEEL/SEALING SET OPERATION” on Page 140.
Warning!
Risk of accident, resulting in serious
personal injury or death if a tire repaired with
tire sealant is in use.
fAvoid hard acceleration and high cornering
speeds.
fDo not exceed maximum speed of 50 mph
(80 km/h).
fPlease observe the safety and operating
instructions on the tire compressor.
fUse tires repaired with sealant only over short
distances.
For information on handling and filling the
sealant: Please see the chapter “USING TIRE SEALANT” on Page 296.
Note on spare wheel/sealing set operationEach time the ignition is switched on,
the reminder SPARE WHEEL/SEALING SET
OPERATION? appears for approx. 10 seconds if a
spare wheel type (spare wheel, collapsible spare
wheel or sealing set) has been set.
1.MAIN MENU
>TYRE PRESS.
>SETTINGS
> TYRES
> SPARE WHEEL
Select and confirm.
2.Select SEALING SET.
3.Confirm selection.
The display automatically returns to the TYRE
PRESSURE sub-menu (filling information). 1.Select YES or NO:
- YES if a spare wheel, collapsible spare wheel
or tire sealant is still being used.
- NO if the spare wheel, collapsible spare
wheel or tire sealant has been removed.
2.Confirm selection.
The selected item is then accepted.
The current settings are displayed if NO is
selected.
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Multi-Purpose Display and Instruments
141
fSet the fitted wheel set with tire type and tire
size.
Please see the chapter “SETTING THE TIRE
TYPE AND SIZE” on Page 134.
Note on operation
The reminder SPARE WHEEL/SEALING SET
OPERATION? goes out automatically after approx.
10 seconds if no selection is made during this
time. The original selection “YES” is then
maintained.In the event of faults, Tire Pressure Monitoring
cannot monitor the tire pressure. A distinction is
made between partial monitoring and inactive
system.
In the case of partial monitoring, the tire pressure
warning light on the speedometer flashes about
60 seconds and lights up thereafter permanently.
No message is output on the multi-purpose
display.
If Tire Pressure Monitoring is not active, the tire
pressure warning light on the speedometer
flashes about 60 seconds and lights up thereafter
permanently. A corresponding message is output
on the multi-purpose display.
The warning light goes out as soon as all faults
have been remedied.
Tire Pressure Monitoring switches to partial
monitoring if:
– there are up to two wheel transmitters not
present or faulty (e.g. a spare wheel or collap-
sible spare wheel is fitted that does not have a
wheel transmitter).
In the event of partial monitoring, the value “_” is
displayed in the sub-menu TYRE PRESSURE (filling
information) at the position of the faulty or missing
wheel transmitter.
Tire Pressure Monitoring is not active in the
following cases:
– Tire Pressure Monitoring is faulty,– at least three wheel transmitters for Tire
Pressure Monitoring are faulty or not present,
– temporarily after changing a wheel,
– too many wheel transmitters have been
detected,
– there is external interference by other radio
sources, e.g. wireless headphones,
– tire temperatures are too high.
fFor information on messages on the multi-
purpose display:
Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on Page 149.
Notes on tire pressurePressure increase as the result of tempera-
ture increase
In accordance with physical principles, the tire
pressure changes as the temperature changes.
The tire pressure increases or decreases by
around 1.5 psi (0.1 bar) for every 18 °F (10 °C)
change in temperature.
Tire pressure specifications
The tire pressure must match the prescribed value
(required pressure).
You can find information on the tire pressure for
cold tires 68 °F (20 °C):
Faults in Tire Pressure Monitoring
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