Bought a 2006 Highlander and the tire indicator light was on. Dealer turned off indicator after checking the car and finding nothing. Light came on again. Problem was found and fixed when a slow leak was discovered in the tire that was caused by a nail. Had 5,000 mile checkup and light came on again after about 10 miles. Took the car right back and was told it was probably due to the rotation of the tires done in a 5,000 mile checkup. Turned light off and about 25 miles later the light came on again. Tire pressure in the tires are from 32.5 to 34.0 (put in by Toyota). Is there an underlying problem for these cars to have a indicator that has a problem?