Eldorado National-Kansas (Eldorado) is recalling certain 2012-2018 Eldorado Aerotech, Aero Elite, Transtech, Advantage, World Trans and Impulse transit buses, equipped with Ricon S-Series and K-Series Titanium Wheelchair. The wheelchair lift positioning input cam may fail while the lift is in use, allowing the platform to travel higher than the vehicle floor height. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 403, “Platform Lift Systems.”