Jeep Compass Owner's Manual page 301

inflation pressure molded into the tire sidewall. Refer
to "Tires – General Information" in this section 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 warn the driver of a low tire pressure
if the tire pressure falls below the low-pressure warn-
ing limit for any reason, including low temperature
effects, or natural pressure loss through the tire.
The TPMS will continue to warn the driver of low tire
pressure as long as the condition exists, and will not turn
off until the tire pressure is at or above the recommended
cold placard pressure. Once the low tire pressure warning
(Tire Pressure Monitoring Telltale Light) illuminates, you
must increase the tire pressure to the recommended cold
placard pressure in order for the Tire Pressure Monitoring
Telltale Light to turn off. The system will automatically
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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 (25 km/h) in order for the
TPMS to receive this information.
− For example, your vehicle may have a recommended
cold (parked for more than three hours) placard pressure
of 30 psi (207 kPa). If the ambient temperature is 68°F
(20°C) and the measured tire pressure is 27 psi (186 kPa),
a temperature drop to 20°F (-7°C) will decrease the tire
pressure to approximately 26 psi (179 kPa). This tire
pressure is sufficiently low enough to turn ON the Tire
Pressure Monitoring Telltale Light. Driving the vehicle
may cause the tire pressure to rise to approximately 27 psi
(186 kPa), but the Tire Pressure Monitoring Telltale Light
will still be ON. In this situation, the Tire Pressure
Monitoring Telltale Light will turn OFF only after the tires
are inflated to the vehicle's recommended cold placard
pressure value.
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