Apparatus for automatically adjusting the direction of the light axis of a vehicle headlight

The apparatus for automatically adjusting horizontally a direction of a light axis of a vehicle headlight (10L,10R) of the invention includes a steering angle sensor (18) detecting a steering angle (¸) of a steering wheel (17) of a vehicle, a swivel control unit (20,11L,11R) performing a swivel control by which the direction of the light axis of the headlight (10L,10R) is adjusted horizontally depending on the steering angle (¸) of the steering wheel (17), and an abnormality detecting unit (20) detecting an abnormality associated with the apparatus. Even after detection of abnormality associated with the apparatus by the abnormality detecting unit (20), the swivel control unit (20,11L,11R) continues performing the swivel control until the light axis is returned to a predetermined initial direction in order to avoid abrupt change of the direction of the light axis of the headlight. The swivel control unit (20,11L,11R) halts the swivel control after the light axis is returned to the predetermined initial direction.