WASHINGTON - Motor Coach Industries (MCI) is recalling more than 4,200 vehicles equipped with a Ricon wheelchair lift and a cassette-type wheelchair lift compartment door. 

The wheelchair lift may become disengaged from a locked position and slide unrestrained on its rollers in the storage structure, potentially breaking through the cassette door and extending beyond the outside of the door when the coach is in motion, the National Highway Traffic Safety Administration said. This is particularly a risk during a left turn. 

To remedy the problem, MCI will provide parts and labor for a Ricon-designed retrofit kit that includes a spring-loaded lock mechanism. There will be no charge for the service. The safety recall begins this month.

 Vehicle owners can reach MCI at (800) 241-2947.