Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Make sure the spare tire has the correct pressure as well, as it has a pressure sensor inside.
If all the tires have the correct pressure, then most commonly, there is a faulty pressure sensor in one of the tires. The pressure sensor is inside the tire, built into the valve stem. You will need to have a shop that has access to a scan-tool that can read the pressure sensor signals to see which one is not functioning.