One tire pressure sensor on Carmine, my 2008 Prius, has died. The light flashes for a bit, then stays on. Tire pressure is fine. Called local Toyota dealer, he said they have Toyota brand they also have after market brand which costs less but is still good. $245 installed. And he warned that given the age of the vehicle, the other 3 are likely going to die soon (2 to 5 years, he figures). Or I can just ignore it, leave the light on. He said the annual car inspection won't be a problem. My concern is, I have this habit of finding each and every nail out there, I have to replace a tire at least once annually. I rely on the light to tell me I have an issue, then I get to a safe place quickly rather than having to stop on the side of the road. (Yes, I have AAA; last 2 times I came home, and let them change to the donut spare right in my driveway. This cost me 2 brand new Nokian tires, earlier this year. As I said, with me this is a given it WILL happen. I know people go years without getting a flat, I do it regularly.) Is it worth calling a car repair - not Toyota dealership - to find a lower price?