Tire Pressure Monitoring System problems of the 2006 Nissan Xterra

Regularly getting faulty tire pressure readings on my 2006 Xterra for over a year now (in cold and warm weather, long and short trips). At first, light would flash intermittently, and then stay on for long period until tire was inflated, particularly left front tire. Took it to the dealership several times, but they couldn't tell me what was wrong. On one occasion, I did have nail in the tire, which was repaired. However, for several months now, the light has come on and off and when I check the pressure, all tires were correctly inflated. Finally, the light stayed on, so I went to the dealership, and they finally told me it was a faulty left tire sensor - the price would be $200. I did some research on the internet and found this was been a rather widespread problem across several makes and models (cars and trucks/suvs - newer models, 2006 and newer).

I noticed the tire pressure light was constantly staying on when my odometer reached approx. 28. 000 miles, but was unsure of the reason. So I took my 2006 Xterra to the dealership and their service department plugged something into the port underneath the driver-side dash. The light would go out for about an hour or so before immediately turning back on. This continued a few more times until the 36k mile warranty was no longer effective. I did not return to the dealership anymore after this. When I purchased new tires from a well-known tire center, the gentleman doing the work handed me the sensor in a couple of pieces saying that it had broken off and he found it inside the tire. These were the tires on the vehicle when I purchased it brand new in Jan 2006. My complaint is that while under warranty this was not recognized and the dealership only fixed the solution by deactivating the dash light. So now if I choose to have the repair done the sensor will cost approximately $85. I am not sure how much the labor would cost, but I would estimate it to be an additional $75-$100.