Electric steering locker, and method of controlling electric steering locker

An electric steering locker (1), includes: a lock member (5) moved by means of a drive source (2) between: a locking position (P1) preventing a rotation of a steering shaft (4), and an unlocking position (P2) allowing the rotation of the steering shaft (4); a position sensor (6) sensing that: the lock member (5) moves from the locking position (P1) to the unlocking position (P2), and the lock member (5) moves from the unlocking position (P2) to the locking position (P1), the position sensor (6), including: a plurality of pressers (8A, 8B, 8C) moving with the lock member (5), and a single switch (SW) having a contact point (SWcp) turned on and off by the pressers (8A, 8B, 8C); and a controller (7) sensing the locking position (P1) and the unlocking position (P2) of the lock member (5) based on the number of ons-offs of the single switch (SW).