Automatic transmission system for vehicle

摘要

An automatic transmission system for a vehicle includes a shift-by-wire system which converts a selected command operation range of a range selector into an electric signal and which changes an actual operation range of an automatic transmission into the selected command operation range by driving an actuator according to the electric signal. A lock mechanism restricts the operation of the range selector when the shift-by-wire system is electrically turned off regardless of the present operation range of the range selector.