Why does a garage door come off its track?
Several things can push a door out of its track:
- A car bumping the door or the track edge.
- A snapped cable on one side, which lets that corner drop.
- A broken or worn roller that slips out.
- A bent track after an impact, or loose brackets and bolts from years of vibration.
- Ice, packed slush or debris in the track.
Winter adds its own causes. Ice can freeze the bottom corner of the door to the floor, and the opener then pulls one side harder than the other. Salt and moisture rust the cable ends and brackets, which weakens them over time.

