Driver Seat Module (DSM) Hard Stop/Soft Stop

WARNING: This page is about a different car, the 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.

A hard stop occurs when one of the memory seat track or backrest (recline) axes physically reach the end of travel and can go no further. A soft stop occurs when the seat stops before physically reaching the end of travel. The hard stop is set by seat design and cannot be changed or adjusted. The soft stop is set by the DSM. To prevent unnecessary stress on the seat motors, the DSM will set up to 10 soft stop positions, 2 for each moving axis. The seat track axes are forward/backward, front up/down and rear up/down. The seat backrest axis is forward/backward. The DSM will use a preset distance from the hard stop to determine where the soft stop will occur. When an axis reaches the hard stop and the switch is held for approximately one second, it will then back up 180 ms and establish the soft stop for that axis in that direction. The DSM uses this "back up" strategy to check sensor integrity any time movement has stopped prematurely due to a sensor failure or obstruction.