Pull Switch

Pull Switches are small blue levers found in Captain Toad: Treasure Tracker and its Nintendo Switch and Nintendo 3DS ports. When activated, the Pull Switch will raise a discrete block of the surrounding terrain, enabling Captain Toad and Toadette to reach previously inaccessible heights, while often simultaneously revealing hidden alcoves beneath. Pull Switches can only be activated once; once raised, the platforms cannot be restored to their original positions, and may become impossible to reach.

Captain Toad: Treasure Tracker

 * Instruction manual: "Pull up a Pull Switch or step on a P Switch to change the terrain of the course."