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5. LOW TIRE PRESSURE WARNING
If the tire pressure is less than 13% of the proper value calculated by the TPMS ECU depending on the
ambient temperature for more than 8 minutes, the 1st low tire pressure warning is given. And, if the tire
pressure is less than 20% for more than 4 minutes, the 2nd warning is given. At this time, the "Check
tire" message is displayed on the DOT LCD display and the global warning lamp comes on.
While the proper tire pressure in this vehicle is 32 psi at room temperature of 20℃, the TPMS
ECU receives the ambient temperature signal from the instrument cluster through CAN
communication and calculates the proper tire pressure to correct it since the tire pressure changes
depending on the ambient temperature.
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At room temperature of 20°C