My husband Jeff drove off our driveway with the electric step still out - destroyed the fence post at the end of the drive and bent the step out of line. Luckily he managed to hammer the step back into shape enough that it would retract - until he did it a second time. We managed to pick up another step at Haggers Bring and Buy meet, and now it has a loud buzzer to let us know when it is still out when the engine is running.