Steering column adjusting device and steering column adjusting method

A steering column adjusting device that adjusts a posture of a steering column of a vehicle, the steering column adjusting device comprising:

• an actuator that drives a posture adjusting mechanism of the steering column to move a posture position of the steering column within a movable range defined by two movable limit positions in the posture adjusting mechanism;
• and
• a detection unit that detects a current posture position of the steering column,
• the detection unit being configured to detect the current posture position of the steering column from an operating value indicating an operation amount of the actuator based on one of the movable limit positions,
• the detection unit being configured to store the operating value indicating an overload position, which is the posture position at which the actuator is put in an overload equal to or greater than a predetermined threshold during an operation of the actuator,
• the detection unit being configured to modify, when the operating value indicating a current overload position detected when the actuator is operated in one moving direction matches, within a predetermined error range, with the operating value indicating a previous overload position stored in a previous operation of the actuator in the one moving direction, the operating value such that the current overload position is the movable limit position in the one moving direction.