A steering lock device includes a camshaft including a shaft portion having an axis, a lock actuation cam that radially projects from a first position of the shaft portion in an axial direction, and a projection that radially projects from a second position of the shaft portion in the axial direction; a housing rotatably accommodating the camshaft; and a lock bar moved by the lock actuation cam in a locking direction or an unlocking direction when the camshaft is rotated about the axis when a key cylinder is operated by a mechanical key. When the lock bar locks the steering shaft, the camshaft is configured so that the projection is separated from the shaft portion if a load exceeding a predetermined strength acts on the projection of the camshaft. The predetermined strength rotates the lock actuation cam to disengage the lock bar from the steering shaft.

A keyless ignition start system in which authentication of a coded key fob is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time when the brake pedal is depressed to put the car in a drive gear. The two step authentication prevents driving off a car which has been started without having the key fob for security purposes and also to avoid inconvenient situations that can otherwise occur.

An ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time prior to moving the vehicle from a parked position. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

An ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time prior to moving the vehicle from a parked position. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

An ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time prior to moving the vehicle from a parked position. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

An ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time prior to moving the vehicle from a parked position. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

An ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time when the brake is applied. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

An ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time when the brake is applied. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

A ignition start system in which authentication of a key is carried out twice, first to activate the ignition switch to allow starting the engine and second at the time when the brake pedal is depressed to put the car in a drive gear. The two step authentication prevents driving off in a car that has been started without having the key for security purposes and also to avoid inconvenient situations that can otherwise occur.

A fragile part (15) which is set to have lower load resistance than other positions of a frame (10) is provided on a guide part (12) at a position that overlaps with a linkage portion (50a) between a hanger (52) and a lock body (51) of a lock member (50) positioned in a steering lock release position.