Driving back from Atlantic City to Rochester NY I noticed the low tire pressure light was on. I stopped at the first Service station and found the rear passenger tire was low. I added air but the indicator came on again after about 60 miles. I knew then I had a real problem. After two more stops I made it to Cortland (NY) Chrysler-Dodge. 25 minutes later I was on the road with the tire repaired. I had run over a piece of a wheel weight. Although the dealer was not my dealer they treated me like I was their best customer. Without the sensor I could have ruined the tire by running it too low and without the excellent service from Cortland Chrysler-Dodge I might still be in Cortland NY.