User Manual - Page 569

For V90.

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WHEELS AND TYRES
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* Option/accessory.
567
General information on the tyre monitoring
system
In the information below, the tyre monitoring
system is referred to generically as TPMS.
Each tyre, including the spare tyre*, should be
checked once a month. When checking, the
tyre should be cold and have the air pressure
recommended by the car manufacturer speci-
fied on the tyre pressure label or in the tyre
pressure table. If the car has tyres of a differ-
ent size than that recommended by the manu-
facturer, find out what the correct air pressure
level is for these.
As an extra safety feature, the car is equipped
with a tyre pressure monitoring system
(TPMS), which shows when the air pressure in
one or more tyres is too low. When the indica-
tor symbol for low air pressure is lit, stop and
check the tyres as soon as possible and inflate
to the correct air pressure.
Driving with tyres that have tyre pressure that
is too low may cause the tyre to overheat,
which can cause a tyre failure. Low tyre pres-
sure also reduces fuel efficiency as well as tyre
service life, and can affect car handling and
stopping ability. Note that TPMS does not
replace regular tyre maintenance. It is the driv-
er's responsibility to maintain correct tyre
pressure, even if the limit for low tyre pressure
has not been reached so that the indicator
symbol illuminates.
The car is also equipped with a TPMS system
fault indicator, which indicates when the sys-
tem is not functioning correctly. The TPMS
system fault indicator is combined with the
indicator symbol for low tyre pressure. When
the system detects a fault, the symbol in the
driver display will flash for about one minute
and then remain illuminated. This procedure
will be repeated when the car is started until
the fault has been rectified. When the symbol
is illuminated, the system's ability to detect or
warn of low tyre pressure may be affected.
A TPMS system fault can occur for several
reasons, such as after changing to a spare
tyre, or changing tyres or wheels that prevent
TPMS from functioning correctly.
Always check the indicator symbol for TPMS
after changing one or more tyres in order to
ensure the new tyre or wheel is working cor-
rectly with TPMS.
Messages on the instrument panel
When the tyre pressure is too low, the indica-
tor symbol for low tyre pressure is illuminated
in the driver display and a message is shown.
Check the tyre pressure in the
Car Status app
in the centre display.
Tyre pressure low Check Car Status
app in center display
Tyre pressure system Temporarily
unavailable
Tyre pressure system Service required
To bear in mind
Always save a new tyre pressure in the
system after changing a wheel or adjust-
ing tyre pressure.
If you change to tyres of a different size to
the ones fitted at the factory, the system
must be reset by storing a new tyre pres-
sure for these tyres to avoid false warn-
ings.
If a spare wheel* is used, it is possible that
the tyre pressure monitoring system does
not work correctly due to the differences
between the wheels.
The system does not replace the need for
regular tyre inspection and maintenance.
It is not possible to switch off the tyre
pressure monitoring system.
3
Indirect Tyre Pressure Monitoring System (ITPMS)
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