About 2 days ago I swapped my winter wheels for summer wheels (stock 18" aeros). I went out for a drive and after a few miles it recognized the new TMPS sensors and started giving me valid pressures for the new tires. I drove it for 2 days with no problems. Then today I am driving to work and got a low tire pressure warning, even though the tire pressures are the same as they have always been, 40 psi. I checked with a manual pressure gauge, and the numbers are right. Any idea why this warning would come up?