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New tire pressure sensors.
When this warning lamp illuminates on your instrument panel at least one of your tires is 25 percent below its correct pressure.
Plus the new tpms sensor comes a new fitted tire valve stem.
Metal stems are more durable than traditional rubber ones fitted on non tpms cars but they can still wear out.
A tire pressure sensor is a small programmable electronic device located in the pressurized pocket made by a wheel and tire that constantly measures the air pressure inside the tire.
Starting with 2008 model year cars and light trucks a tire pressure monitoring system tpms has been required for all new vehicles sold in the united states.