Seven years old - battery died most likely. We install them in my shop for $79.99 including install and program. No need to buy OE, find a place with generic sensors that they program on the car. With an Autel scanner it's programmed in less than a minute.
By the way, you can't replace the batteries. This is a complete sensor.
Im with mopar to ya. Dont waste time at the dealership, the schrader ez sensors will program with a simple tpms tool once activated. All that has to be done is be installed, activated, then follow the proper relearn procedure