Garage Door Won't Close? Causes and Fixes
A garage door that won't close leaves your home exposed to weather, pests, and intruders. The good news: some causes have quick fixes. Here's how to diagnose the problem and when to call a professional.
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Quick Answer: What to Do Right Now
✓ Try these safe checks first:
- Check for obstructions in the door path or sensor beam
- Clean the safety sensor lenses with a soft cloth
- Make sure the sensors are aligned (steady green lights)
- Check if the opener's lock mode is engaged
- Try holding the wall button down — if it closes, sensors are the issue
⚠ Call a professional immediately if:
- The door closes partway then reverses
- Broken springs — the door is too heavy for the opener
- The door is off-track or visibly crooked
- Cables are hanging loose or frayed
- The opener motor strains or makes grinding noises
Why Won't Your Garage Door Close?
| Symptom | Likely Cause | Safe DIY Check | Call a Tech If... |
|---|---|---|---|
| Door reverses immediately after touching the floor | Close limit set too far or obstruction | Adjust the close limit on the opener | Adjusting limits doesn't help |
| Door reverses before reaching the floor | Safety sensor blocked or misaligned | Clean and realign sensor eyes | Sensors look fine but issue persists |
| Door closes with wall button but not remote | Sensor issue or signal interference | Replace remote batteries, check sensor LEDs | Problem continues after sensor cleaning |
| Door starts to close then stops and opens fully | Spring tension too low or force setting too sensitive | Check for obstructions on the track | No obstruction — likely spring or force issue |
| Opener runs but door doesn't move down | Disconnected trolley or broken drive | Re-engage the trolley release | Trolley is engaged but door doesn't respond |
| Door closes unevenly or at an angle | Broken cable or spring on one side | Visual inspection only — do not touch | Any visible cable or spring damage |
Door reverses immediately after touching the floor
Door reverses before reaching the floor
Door closes with wall button but not remote
Door starts to close then stops and opens fully
Opener runs but door doesn't move down
Door closes unevenly or at an angle
Don't Leave Your Garage Door Open
An open garage door is an invitation to intruders, possums, snakes, and water damage — all common issues for Sydney homeowners. If basic troubleshooting doesn't resolve the problem, get it fixed before nightfall.
Our technicians carry sensors, cables, springs, and opener parts on every van, meaning most "won't close" issues are resolved in a single visit. We service all Sydney suburbs with same-day availability. For more troubleshooting tips, see our guide to common garage door problems.
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If you're seeing crooked movement, loose cables, or a heavy door, it's safer to stop using it. Call us for garage door repair in Sydney or request a callback in 2 minutes.