An adjustment motor shall be recalibrated after being activated 250 times. The 250 operations comprise any adjustment movement of a motor for an adjustment direction. An intermediate calibration is different from the calibration in chapter 4. For intermediate calibration one of the two stop positions of a motor is re-set and newly calibrated. In this case, the adjustment is operated until a stop is detected and this position is stored as the new stop position.
Adjustments only happen on user demand, therefore there is no previous position to restore.
Yes, voltage cut off also stops the control. No motor must be damaged by being driven without moving. We assumed that for instance something stands behind the seat blocking the backwards movement. Since the motor can't move, the control will register a new virtual stop. However, if the something is removed from behind the seat, it should be possible to move the seat further backward.