Alfa Romeo Giulia Quadrifoglio 2017 Owner's Manual page 102

Tire Pressure
Monitoring System
(TPMS)
This vehicle is equipped with a Tire
Pressure Monitoring System (TPMS)
that sends the inflation pressure
information of each tire to the control
unit, and will signal the driver in the
event of insufficient tire pressure.
Tire pressure will vary with temperature
by approximately 1 psi (7 kPa) for every
12°F (6.5°C). This means that when the
outside temperature decreases, the tire
pressure will also 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 mile
(1.6 km) after a three hour period. The
cold tire inflation pressure must not
exceed the maximum inflation pressure
molded into the tire sidewall. Refer to
"Tires" in "Servicing And Maintenance"
for information on how to properly
inflate the vehicle's tires. The tire
pressure will also increase as the
vehicle is driven. This is normal, and
there should be no adjustment for this
increased pressure.
The TPMS will signal the driver if
pressure falls below the warning limit for
any reason, including the effects of low
temperature and normal loss of
pressure from the tire.
100
The TPMS will stop indicating
insufficient tire pressure when pressure
is equal to or greater than the
prescribed cold inflation level.
Therefore, if insufficient tire pressure is
indicated by the ( ) warning light
displaying in the instrument cluster,
increase the inflation pressure up to the
prescribed cold inflation value.
The system will automatically update,
and the "Tire Pressure Monitoring
Telltale Light" will turn off once the
system receives the updated tire
pressures. The vehicle may need to be
driven for up to 20 minutes above
15 mph (24 km/h) in order for the TPMS
to receive this information.
Operating Example
For example, your vehicle may have a
recommended cold (parked for more
than three hours) placard pressure of
33 psi (227 kPa). If the ambient
temperature is 68°F (20°C), and the
measured tire pressure is 28 psi
(193 kPa), a temperature drop to 20°F
(-7°C) will decrease the tire pressure to
approximately 24 psi (165 kPa). This tire
pressure is low enough to turn on the
"Tire Pressure Monitoring Warning
Light." Driving the vehicle may cause
the tire pressure to rise to
approximately 28 psi (193 kPa), but the
"Tire Pressure Monitoring Telltale Light"
will still be on. In this situation, the "Tire
Pressure Monitoring Warning Light" will
turn off only after the tires are inflated to
the vehicle's recommended cold
placard pressure value.