Bought my Roadster in Dec. 2012 with 19k miles on it. I drive it nearly every day but have only put 25k miles on it in 5+ years. Since I've owned it I've replaced 3 of the 4 tire pressure monitor sensors, and have even had to replace 1 of them a second time, only 1 mos. after it had just been replaced. And now again, all the warning lights are on --the "Fault" yellow light and the tire pressure icon on the dash, + the "tire pressure monitor service required" on the display, . Aren't TPMS supposed to last 5-10 years? Aren't the batteries inside them supposed to last years?