Continuously variable transmission and control method for continuously variable transmission

A continuously variable transmission mounted on a vehicle, comprising:

• a primary pulley;
• a secondary pulley;
• a belt wound around the primary pulley and the secondary pulley, the belt including:
• a ring;
• and
• a plurality of elements bundled by the ring, the elements having respective receiving portions opening in a radial direction of the belt, the elements receiving the ring in the receiving portions;
• and
• a controller configured to:
• assuming a direction perpendicular to a circumferential direction and a radial direction of the belt as a lateral direction, detect a relative movement of the element in the lateral direction with respect to the ring or detect a presence of an action of a force in the lateral direction on the element;
• and
• execute a preliminarily determined falling-off countermeasure control of the element when the relative movement of the element is detected or the action of the force on the element is detected.