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Tire Pressure Monitoring (TPM)Each tire should be checked monthly when cold
and inflated to the inflation pressure
recommended by Porsche on the tire inflation
pressure label.
For information on the tire inflation pressure label:
fPlease see the chapter “TIRES AND WHEELS”
on page 280.
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPM) that illuminates a low tire pressure telltale
(warning light) when one or more of your tires is
significantly under-inflated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires
as soon as possible, an d inflate them to the
proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can
lead to tire failure. Under-inflation also reduces
fuel efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
However, the tire pressure must still be set
manually on the wheel.
f Please see the chapter “TIRE PRESSURE FOR
COLD TIRES (68 °F/20 °C)” on page 326.
Danger!
Risk of serious personal injury or death.
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
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 low tire pressure
telltale. Low tire pressure reduces the road
safety of the vehicle and destroys the tire and
wheel.
Tire Pressure Monitoring 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 cannot warn you
about tire damage that occurs suddenly (e.g.
flat tire due to abrupt external effects).
f 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.
f Do not by any means continue to drive with
defective tires. f
Sealing the tire with tire sealant is only an
emergency repair so you can drive to the
nearest specialist workshop.
The permitted top speed is 50 mph
(80 km/h) .
f Do not drive with tires in which the tire
pressure drops again very quickly. In case of
doubt, have tires checked by a specialist
workshop.
f Defective tires must be replaced immediately
at an authorized Porsche dealer.
Tires must never be repaired under any
circumstances.
f If Tire Pressure Monitoring 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 is defective.
For information on warning messages on the multi-
function display:
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.
f 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.
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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.
f 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!
Your vehicle has also been equipped with a TPM
malfunction indicator to in dicate 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.
f 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. The warning light in the instrument panel lights up:
– When a loss in pressure has been detected.
– In the event of a defect in Tire Pressure
Monitoring or a temporary fault.
– When learning new fitted wheels/wheel transmitters, as long as the vehicle’s own
wheels have not ye t been recognized.
The tire pressure warning light on the instrument
panel goes out only when the cause of the fault
has been rectified.Warning light
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Functional description of Tire Pressure
Monitoring
Tire Pressure Monitoring offers the following
functions:
– Display of the actual tire pressure while the vehicle is in motion.
–“ Fill info ” display:
Display of the deviation from the required
pressure (refilling pressure) at standstill.
–“ Tire info ” display:
Display of current settings (when the vehicle is
stationary).
– Tire pressure warnings in two stages (yellow and red warning).
Selecting the Tire pressure function on the
multi-function display The “
Tire pressure ” function displays the
temperature-dependent tire pressures
(actual pressures) in the four wheels.
You can watch the tire pressure rise as the
temperature increases while driving.
This display is only for information.
f Under no circumstances should the tire
pressures be changed based on this display. Viewing “Fill info” in the Tire pressure menu
(only when vehicle is stationary)1.
Select
> “Tire pressure”
and confirm.
1. Select
> “Tire pressure ”
2. “Fill info ”
and confirm.
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You can read the tire pressures to be
corrected on this display.
The tire pressure to be corrected (refill pressure)
is indicated on the displayed wheel.
Example: If “–1.5 psi (–0.
1 bar)" is displayed for
the rear right tire, 1.5 psi (0.1 bar) must be added
to this tire.
The displayed pressures take into account the tire
temperature.
f Only use the pressure specifications from the
“Fill info” display in the tire pressure menu or
from the respective tire pressure warning to
correct the tire pressure.
Note
Each time the ignition is switched on, it make take
approx. 1 minute until all tire pressures are
displayed. Dashes (-.-) appear instead of the tire
pressures. Viewing “Tire info” in the Tire pressure menu
The current settings are displayed.Selecting “Charge” in the Tire pressure menu
Available setting options:
–“
Part load ”
–“ Full load ”
f Adapt the pressure of the tires to the selected
load type.
See “ Fill info ” in the Tire pressure menu.
If this menu is not displayed, the specified tire
pressures are valid for al l types of vehicle load.
1.Select
> “Tire pressure ”
2. “Tire info ”
and confirm.
1. Select
> “Tire pressure ”
2. “Charge”
and confirm.
3. Select load type
and confirm.
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Selecting “Comfort pressure” in the
Tire pressure menu
Available setting options:
–“Comfort ”
–“ Standard ” For speeds up to 100 mph (160 km/h), the tire
pressures can be reduced to increase driving
comfort.
The Tire Pressure Monitoring system must be set
to the applicable tire pressure (comfort pressure
or standard pressure).
If you selected “
Comfort press.”, the TPM
system automatically uses lower pressure values
when monitoring tire pressures.
The comfort tire pressures are included in the
technical data or under “Fill info” in the Tire
pressure menu, you can compare the pressure
differences (e.g. 4.4 psi (+0.3 bar)) with the
“Comfort pressures”.
For tires that have not ye t been learned, the new
required tire pressures are displayed instead of
the actual tire pressures.
For information on learning the tires:
f Please see the chapter “SYSTEM LEARNING”
on page 134.
Caution!
Tires are inflated to comfort pressure at the
factory, which is not suitable for driving at
very high speeds. Comfort pressure speed warning
If the maximum speed of the preset comfort
pressure is exceeded, a warning message
appears on the multi-function display.
Warning!
Risk of accident when exceeding the
maximum speed.
Driving at excessive speeds when the comfort
pressure is active will destroy the tires.
f Never exceed the speed specified on the
warning message.
f Always set the standard tire pressure when driving at higher speeds.
1.Select
> “Tire pressure”
2. “Comfort press. ”
and confirm.
3. Select required pressure
and confirm.
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Selecting settings in the Tire pressure menu
(type and size of fitted tire)
Warning!
Risk of accident due to excessive speed. This
could lead to serious personal injury or
death.
f Always observe the permissible maximum
speed of the respective tire.
f Exceeding 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. Warning!
Incomplete entries or selection of the wrong
tires on the multi-function display affect
correct indication of warnings and
messages.
f The settings must be updated in the “Tire
pressure ” menu after changing a wheel, filling
with tire sealant or adding air (after previous
warning “ Tire pressure!”).
f Please see the chapter “RED WARNING – TIRE PRESSURE!” on page 133. The new 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.
Available setting options:
–“ 18 inch ”
–“ 19 inch ”
–“ 20 inch ”
Tire selection has only been successfully
completed when the following message appears
on the multi-function display (example).
“Summer tires 19-inch was set. No monitoring,
system is learning”.
f Please see the chapter “SYSTEM LEARNING”
on page 134. Notes
The message “Action cancelled” appears if the
setting process is interrupted. All entries made up
to this point are lost, and the original settings
remain in effect.
Before fitting tires with dimensions that are not
already stored in the mult
i-function display, the
missing information should be added to the
multi-function display.
f Please contact a qualified specialist workshop.
We recommend that you have an authorized
Porsche dealer to do this work as they have
trained workshop personnel and the necessary
parts and tools.
f Use only tires approved by Porsche.
The available items in the tire pressure menu
depend on the model type. For this reason it is
possible that some of the selection options shown
here are not available on your multi-function
display.
1. Select
> “Tire pressure ”
2. “Adjust ”
and confirm.
3. Select “ Summer tires ” or
“ Winter tires ” or
“ All-season ”
and confirm.
4. Select the tire size
and confirm.
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Ye l l o w a r n i n g – I n f l a t e !Tire pressure warnings
The tire pressure warning light on the instrument
panel and a corresponding message on the multi-
function display warn about loss of pressure in two
stages (yellow and red), depending on the amount
of pressure loss.
Yellow warning – Inflate
The pressure in the tire is too low by more than
4to7psi (0.3 to 0.5 bar ).
The tire pressure warning specifies the affected
tire and the target tire pressure.
Correct the tire pressure at the next opportunity. This tire pressure warning appears:
– for approx. 10 seconds when the vehicle is
stationary and the ignition is switched off or
– when the ignition is switched on again.
The warning can be acknowledged when the
ignition is switched on.
The tire pressure warning light on the instrument
panel goes out when the tire pressure has been
corrected.
Red warning – Tire pressure!Red warning – Tire pressure!
At speeds below 100 mph (160 km/h):
The pressure in the tire has dropped by more
than 7 psi (0.5 bar). This significant pressure
loss is a danger to road safety.
At speeds above 100 mph (160 km/h):
The pressure in the tire has dropped by more
than 6 psi (0.4 bar). This significant pressure
loss is a danger to road safety.
f When the tire pressure warning appears,
stop immediately at a suitable location.
Check the indicated tire for signs of damage.
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If necessary, fill in ti
re sealant and set the
correct tire pressure.
This tire pressure warning also appears when
driving and can be acknowledged.
The tire pressure warning light on the instrument
panel goes out only when the tire pressure has
been corrected.
System learningTire Pressure Monitoring begins to “learn” the
wheels after a wheel change, wheel transmitter
replacement or update of the tire settings . During
this process, Tire Pressu re Monitoring recognizes
the wheels and their locations.
The following message appears on the multi-
function display (example):
“No monitoring, system is learning”.
The wheel learning process takes place
exclusively when the vehicle is being driven
(vehicle speed above 16 mph (25 km/h)).
Tire Pressure Monitoring requires a certain
amount of time to learn the wheels. During this
time, the current tire pressures are not available
on the multi-function display:
– The tire pressure warning light remains lit until all wheels have been learned.
– Lines (-.-) appear on the display of the “Tire pressure” function. – The required pressures for cold tires (68 °F
(20 °C)) are indicated under “Fill info” in the tire
pressure menu.
Position and pressure information is displayed as
soon as Tire Pressure Monitoring has assigned
the wheels recognized as belonging to the vehicle
to the correct wheel positions.
f Check the tire pressure for all wheels under
“Fill info ”.
f Correct the tire pressure to the required
pressure if necessary.
Changing a wheel and replacing tiresfNew wheels must be fitted with radio
transmitters for Tire Pressure Monitoring.
Before tires are changed, the battery charge
condition of the wheel transmitters should be
checked.
Please contact a qualified specialist workshop.
We recommend that you have an authorized
Porsche dealer to do this work as they have
trained workshop personnel and the necessary
parts and tools.
f Switch off the ignition when changing a wheel.
The tire settings on the mu lti-function display must
be updated after changing a wheel.
If the tire settings are not updated, the message
“Tire change? Update settings!” is displayed on the
multi-function display.
f Update the multi-function display settings the
next time the vehicle is stationary.
Pressure increase as the result of
temperature increaseIn accordance with physical principles, the tire
pressure changes as the temperature
changes.The tire pressure increases or decreases
by 0.1 bar (1.5 psi) for
every 18 °F (10 °C) change in temperature.Partial monitoringMonitoring of the other wheels is continued if there
is a fault in one or two wheel transmitters.
– The tire pressure warning light lights up.
– The message “Restricted monitoring” appears
on the multi-function display.
– No tire pressures are displayed on the multi-function display for wheels with faulty
wheel transmitters.