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TPMS will warn you of a low tire pressure if the tire
pressure falls below the low-pressure warning limit for
any reason, including low temperature effects and natu-
ral pressure loss through the tire.
TPMS will continue to warn you 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 has
been illuminated, 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 update and the TPMS 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 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 sufficiently low enough to turn ON the TPMS
Telltale Light. Driving the vehicle may cause the tire
pressure to rise to approximately 28 psi (193 kPa), but the
TPMS Telltale Light will still be ON. In this situation, the
TPMS Telltale Light will turn OFF only after the tires are
inflated to the vehicle’s recommended cold placard pres-
sure value.
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