Maserati Ghibli, Owner'S Manual

Page: 211 / 308

Tire Pressure Monitoring
System (TPMS)
The Tire Pressure Monitoring System
(TPMS) will warn the driver of a low
tire pressure according to the vehicle
recommended cold pressure indicated
on the table “Tire Inflation Pressure”
in section 8.
The tire pressure will vary with
temperature by about 0.07 bar for
every 7°C (12°F). This means that when
the outside temperature decreases,
the tire pressure will decrease. Tire
pressure should always be set based
on cold inflation tire pressure. This is
defined as the tire pressure after the
vehicle has not been driven for at least
three hours, or driven less than 1.6 km
(1 mi) after a three hour period. The
cold tire inflation pressure must not
exceed the maximum inflation
pressure molded into the tire sidewall.
Check “Tires – General Information” in
section 5 for information on how to
properly inflate the tires.
The tire pressure will also increase as
the vehicle is driven - this is normal
and there is no adjustment required
when this occurs.
The TPMS will warn the driver of a low
tire pressure if the tire pressure falls
below the low-pressure warning limit
for any reason, including low
temperature effects and natural
pressure loss of the tire.
The TPMS will continue to warn the
driver of low tire pressure as long as
the condition persists and will not turn
off until the tire pressure is equal or
above the recommended cold
inflation pressure. Once the low tire
pressure warning light
illuminates,
you must increase the tire pressure to
the recommended cold inflation
pressure in order for the TPMS light
to turn off. The system will
automatically update and the TPMS
light
will turn off once the system
acquires the correct tire pressure.
The vehicle may need to be driven for
up to 20 minutes above 24 km/h
(15 mph) in order for the TPMS to
acquire and process the updated
setting.
For example: If your vehicle (stationary
for more than three hours) may have a
recommended cold inflation pressure
of 2.1 bar. If the ambient temperature
is 20°C (68°F) and the measured tire
pressure is 1.8 bar, a temperature drop
to 7°C (12°F) will decrease the tire
pressure to approximately 1.6 bar. This
tire pressure is sufficiently low to turn
ON the TPMS Light
. Driving the
vehicle may cause the tire pressure to
rise to approximately 1.8 bar, but the
TPMS light
will still lit. In this
situation, the TPMS light will turn
OFF only after the tires are inflated to
the vehicle’s recommended cold
inflation pressure value.
Driving
5
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