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
• based on an operation condition of the vehicle, detect that the continuously variable transmission is under an operation condition in which a gap larger than a threshold is generated on the belt;
• and
• execute a preliminarily determined falling-off countermeasure control of the elements when the continuously variable transmission is detected to be under the operation condition in which the gap larger than the threshold is generated on the belt.