Fiat 500X Owner's Handbook Manual page 74

iTPMS (indirect Tyre
Pressure Monitoring
System)
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32)
Description
The vehicle can be equipped with the
iTPMS (indirect Tyre Pressure
Monitoring System) which monitors the
tyre inflation status thanks to wheel
speed sensors.
Correct tyre pressure
If the pressure of all the tyres
corresponds to the correct value, the
display shows the vehicle with "OK"
beside each wheel.
Low tyre pressure
The system warns the driver if one or
more tyres are flat by switching on
the warning light on the instrument
panel and a warning message on
the display, along with an acoustic
signal. .
If the system does not recognise the
pressure value of one or more tyres, the
display will show dashes "– –"
This indication is displayed also when
turning the engine off and on again until
the RESET procedure is carried out.
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Reset procedure
The iTPMS needs an initial "self-
learning" phase (with length depending
on the driving style and road conditions:
optimal conditions being driving on a
straight road at 80 km/h for at least 20
minutes) which starts when the RESET
procedure is carried out.
The RESET procedure must be carried
out:
❒ whenever the tyre pressure is
modified;
❒ when even only one tyre is changed;
❒ when tyres are rotated/inverted;
❒ when the space-saver wheel is fitted.
Before carrying out the RESET
procedure, inflate the tyres to the rated
pressure values specified in the inflation
pressure table (see "Wheels" paragraph
in the "Technical specifications"
chapter).
If the RESET is not carried out, in all
above cases, the warning light may
give false indications on one or more
tyres.
To carry out the RESET procedure, with
the vehicle stopped and the ignition
device at MAR, use the Main Menu as
follows:
❒ go to "Vehicle info" and then to
"Reset tyre pressure"
❒ press the "OK" and hold down (more
than 2 seconds)
❒ the display will show the procedure
progress (with a graphic bar) till the
RESET is completed.
At the end of the RESET procedure the
display will show the "Reset saved"
message, indicating that the self-
learning has been started.
Working conditions
The system is active for speeds above
15 km/h.
In a few situations such as sporty
driving, particular conditions of the road
surface (e.g. icy, snowy, unsurfaced
roads...) the signalling may be delayed
or partial in detecting the contemporary
deflation of more than one tyre.
Under special conditions (e.g. vehicle
loaded asymmetrically on one side,
damaged or worn tyre, fitting the
space-saver wheel, fitting snow chains,
fitting different tyres on the axles) the
system may give false indications or be
temporarily deactivated.
If the system is temporarily deactivated
the warning light flashes for about
75 seconds and then is continuously
on; at the same time, the display shows
a warning message.
This indication is displayed also after
the engine has been switched off and
then on again if the correct operating
conditions are not restored.