A 'TPC Inactive' warning light has been illuminating off an on for no obvious reason.
TPC is for Tire Pressure Corrected. When this is displayed, the display indicates what pressure should be added or reduced from each tire to obtain the correct tire pressure.
the TPC inactive indicates the monitors, one or all have lost battery life and will need to be replaced. You should replace all of them even if only one is bad since the battery life will be about the same. Cost about 130 plus labor per tire.
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