The Ford Freestyle transmission speed sensor area is driver side of the transmission,close to the back of the unit. The transmission is one of the main pieces of the vehicle. You will come into issues eventually. You might encounter shivers. Hard moves could come up and that isn't great. There may jolt. The pinion wheels might become stuck. The transmission might slip. If the transmission liquid releases,that should be settled rapidly. Deferred movements can cause speed increase issues. The transmission liquid should be supplanted each 30，000 to 60，000 miles. Alongside liquid changes,awful sounds will come from the transmission. Old transmission liquid will be terrible to the ear. An exhausted force converter will cause a cerebral pain.