I have on my display tire monitor system needs service, I have been to the dealership and was told that the battery has died on the sensors and that I have to have them replaced. I know they were wrong in their diagnosis because first it was the left rear and a few minutes later the right rear and within five minutes the fronts quit. I had the sensors replaced and it still has the same problem. My question is has anyone else had this problem? Also I was told that the sensors send a signal to the Rcdlr, where is the rcdlr located on my Terrain? Also is there a wire schematic for the tire monitor system?