I have a quick question about the tire pressure monitors. I searched the archives and am still unclear. I took the car to the dealership to inquire about getting my money back for the sunroof drain hose issue. On my way there I had the usual intermittent RPM needle shake which caused the check engine light to flash about 3x, things normalized and I was on my way again until the next time the car decides to do a shake, rattle and roll. So, asked when I was there about this and they hooked it up to the machine, the code came back as some random fail, he said can be due to bad gas or whatever. There were other codes that covered the tire pressure sensors. I asked how much to replace those and he said $100 each normally. So…..that leads me to ask, where else can I have this done? I put new tires on 2 years ago – from what I was reading in the archives it sounded like these sensors are done when you do new tires – maybe I’m unclear so wanted to see what you have to suggest. Can a place like NTB do these? I doubt it’s something easy to do, I’m guessing tires have to be removed to access the sensors?