Transmission Control Switch (TCS): Tow/Haul
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The Tow/Haul switch is a momentary contact switch located on the end of the transmission selector lever. When pressed, the Tow/Haul switch sends a signal to the PCM. The PCM then makes changes in shift scheduling and Torque Converter Clutch (TCC) operation.
When Tow/Haul mode is activated the following occurs:
- All forward gears are available.
- Shifts occur at higher vehicle speeds to improve vehicle acceleration, reduce shift frequency and increase coast braking capability.
- TCC occurs at lower vehicle speeds to improve transmission cooling and efficiency.
- Upshifts are temporarily delayed during hill cresting to reduce transmission ratio hunting and to prepare for possible downshifts while descending a grade.
- Engine braking is provided in all forward gear positions, D, 3, 2 and 1.
- A PCM strategy, known as grade braking downshift automatically provides increased coast braking to assist the driver in maintaining a desired vehicle speed while descending a grade.
Default is Tow/Haul OFF.