Transmission Range (TR) Sensor
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The transmission range (TR) sensor is located within the transaxle. This sensor is a Hall-effect type sensor. It detects the driver selected transaxle range through a mechanical linkage from the range selector lever.