Chair stopped at Day hab while in motion has not worked since Provider is working with manufacturer and will attempt to replace controller to effect repair fingers crossed Previous Q710 chair , very dangerous as chair had mind of it's own, Manufacturer stepped up and replaced chair with one with a better controller problem resolved Previously had Jazzy 2200 it would stop while crossing street small micro switch on tilt mechanism would stop chair anytime it was on a incline repair was effected by placing a small piece of electrical tape on tilt frame under micro switch whisker causing it to remain engaged unless chair was tilted