Porsche 911 2020, Owner'S Manual

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Wheels and Tires
302
e If the tire pressure warning light comes on and a
tire pressure warning is displayed even with a
correct tire pressure: Visit an authorized Porsche
dealer. Porsche recommends an authorized Por-
sche dealer, as they have trained technicians and
the necessary parts and tools.
Information
The tire pressure monitoring system issues warnings
relating to loss of pressure due to natural diffusion
and gradual loss of pressure caused by foreign
bodies. The Tire Pressure Monitoring System cannot
warn you about tire damage that occurs suddenly (e.
g. a flat tire due to unexpected external effects).
Malfunctions in the tire pressure monitoring
system
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is
not operating properly. The TPMS malfunction indi-
cator is combined with the low tire pressure telltale.
When the system detects a malfunction, the telltale
will flash for approximately one minute and then re-
main continuously illuminated. This sequence will
continue upon subsequent vehicle start-ups as long
as the malfunction exists. When the malfunction in-
dicator is illuminated, the system may not be able to
detect or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of reasons, in-
cluding the installation of replacement or alternate
tires or wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the TPMS
malfunction telltale after replacing one or more tires
or wheels on your vehicle to ensure that the re-
placement or alternate tires and wheels allow the
TPMS to continue to function properly.
Monitoring is interrupted in the following cases:
– Fault in the Tire Pressure Monitoring System.
– Missing wheel sensors for the Tire Pressure
Monitoring System.
– In the learning phase after the tire settings have
been updated.
– After the wheels have been changed without
updating the tire settings.
– If the tire temperatures are too high.
> Please see chapter "Warning and Information
Messages" on page 280.
Retrieving the tire pressure
The individual tire pressures are only displayed
above a speed of approx 16 mph (25 km/h) or if the
tire is filled to at least 1.5 psi (0.1 bar). When the
ignition is switched on after the vehicle has been
stationary for more than approx. 10 minutes, lines
(-.-) are shown in place of the tire pressures.
e Tire pressure e Current pressure
The actual pressures are displayed for information
purposes only. The tire pressures change according
to the temperature.
e
Never change the tire pressures on the basis of
this display.
Displaying pressure difference
Fig. 242: Example pressure difference
b b
Vehicle is stationary.
e Tire pressure e Pressure deviation
The pressure deviation from the set pressure on the
relevant wheel is displayed. Example:
If the reading for the rear right tire is shown as
–0.1 bar , this tire needs to be inflated by
1.4 psi (0.1 bar). The tire temperature has already
been taken into account in the pressures shown.
e
You should only use the pressure difference from
the display or the corresponding tire pressure
warning to correct the tire pressure.
Setting the tires
Settings for the tire type and tire size, load and
comfort/standard pressure can be made via the
touch display in the dashboard:
> Please see chapter "Setting the Tire Pressure
Monitoring System (TPMS) in the PCM" on
page 303.
Displaying the tire temperature
WARNING
Loss of control over the
vehicle
Despite the advantages of the tire temperature dis-
play, drivers remain responsible for adapting their
driving style and maneuvers to the road and weather
conditions and to the traffic situation.
The tire temperature display cannot reduce the risk
of accidents due to inappropriate speed.
e Adapt your driving style and maneuvers to the
road and weather conditions and to the traffic
situation.
b b Vehicles with Sport Chrono package
b b
Summer or ultra high performance tires (UHP
tires) mounted and selected in the TPMS.
The tire temperature display assists the driver in as-
sessing the current operating range of the tires.