Garage Door Won’t Open? 8 Causes and Fixes
The most common reasons a garage door won’t open are a dead remote battery, a power outage, an engaged lock mode, or — the big one — a broken torsion spring. The first three are free DIY fixes that take minutes. A broken spring is not: never force the door or keep running the opener, and call a professional.
Work through the checks below in order. They’re sequenced from the 30-second fixes to the serious mechanical failures, and the sequence matters — you don’t want to burn out a $400 opener trying to lift a door whose $200 spring has snapped.
What Should You Check First? The Diagnostic Sequence
- Power. Is the opener plugged in? Did a breaker or GFCI outlet trip? Does the opener’s light come on? A surprising share of “broken” openers are unplugged ones.
- Remote battery. Try the wall button. If the wall button works but the remote doesn’t, replace the remote’s coin cell — done.
- Lock mode. If the wall button works but no remote does (and you didn’t just change the battery), the console’s Lock/Vacation button is likely enabled. Hold it a few seconds to disable.
- Disconnected trolley. If the opener runs but the door doesn’t move, someone pulled the red emergency-release cord. Re-engage the trolley (usually: pull the cord toward the door, then run the opener until it clicks back in).
- THE BIG ONE — broken spring check. Did you hear a loud bang from the garage recently, like a firecracker or a 2×4 snapping? Look at the spring(s) on the shaft above the door: a broken torsion spring shows a clear 2–3 inch gap in the coil. The door will feel extremely heavy, may lift a few inches then stop, or may sit crooked. If you see a gap — stop here and call a pro.
The 8 Causes of a Garage Door That Won’t Open
1. Dead Remote Battery
The simplest fix. Replace the battery and confirm against the wall button.
2. Power Outage / Unplugged Opener
Check the plug, the outlet (test with a lamp), and the breaker panel. Garage outlets are often on GFCI circuits that trip silently.
3. Lock / Vacation Mode Engaged
A security feature on the wall console that disables all remotes — and is very easy to press accidentally. Some doors also have a manual slide lock on the track that physically bars the door; make sure it’s disengaged before running the opener.
4. Disconnected Trolley (Emergency Release)
The opener hums and the chain moves, but the door stays put. Re-engage per your manual.
5. Broken Spring — Do NOT Force It
This deserves its own section below. Short version: a snapped spring means the opener is being asked to dead-lift a 150–300 lb door it was never designed to lift.
6. Misadjusted Limit Settings
If the up-travel limit drifted, the door may open only partway. Adjust the limit screws or buttons per the manual, in small increments.
7. Photo-Eye / Safety System Fault
Sensors mainly block closing, but a wiring fault in the safety system can prevent all operation on some models. See sensor repair cost.
8. Opener Motor or Gear Failure
A stripped drive gear (a known wear item on older chain-drive units) means the motor spins but nothing moves — sounding similar to a disconnected trolley. Compare repair vs. opener replacement cost.
Why You Must Never Force a Door With a Broken Spring
The springs do virtually all the lifting; the opener just guides the door. A typical double-car steel door weighs 150–300 pounds, and a properly wound torsion spring counterbalances nearly all of it — which is why a healthy door can be lifted with one hand.
When the spring breaks:
- The opener cannot lift the door alone. Repeatedly hitting the button strains the motor and strips the drive gear — turning a $150–$350 spring repair into a spring repair plus a $150–$600 opener repair.
- Lifting by hand is dangerous. You’re dead-lifting the door’s full weight with nothing holding it if your grip slips. A falling door can cause crushing injuries.
- The hardware is under residual tension. The U.S. Consumer Product Safety Commission has long identified garage door springs, cables, and bottom brackets as among the most hazardous DIY repair points in the home, associated with thousands of emergency-room injuries each year. Spring replacement requires winding bars, the correct spring rating, and training — per DASMA industry guidance, it is professional-only work.
Telltale signs of a broken spring: a recent loud bang, a visible gap in the spring coil, the door lifting 6 inches then stopping, cables hanging loose, or a door that feels impossibly heavy on the manual release.
How Do You Open a Garage Door Manually?
If the power is out (or the opener is dead) and the springs are intact:
- Door fully closed first. Never pull the release with the door up — a door with weak springs can slam down.
- Pull the red emergency-release cord hanging from the opener rail, straight down (or down and back, per your model). This disconnects the trolley.
- Lift the door by hand from the bottom, with your legs, keeping fingers out of the section joints. A balanced door should lift smoothly and stay open on its own.
- Slide the manual lock if you’re leaving the door closed — with the trolley released, the opener no longer secures the door.
- Re-engage afterward by pulling the cord toward the door and running the opener until the trolley clicks in.
Warning: if the door is extremely heavy, lifts crooked, or won’t stay up, a spring or cable has failed — lower it gently and stop. That weight is the entire door, and it is not a one-person lift.
What If Your Car Is Trapped Inside?
A broken spring at 7 a.m. with the car in the garage is the classic emergency call. Your options:
- Single-car door, springs intact: manual release and lift — usually manageable.
- Broken spring: Don’t try to lift it alone. Two strong adults can raise a smaller door and prop it with locking pliers clamped onto the track below a roller plus a sturdy support — but the safer move is an emergency service call. Most companies offer same-day spring replacement.
- Genuinely urgent (medical, work-critical): emergency/after-hours service exists for exactly this — expect a premium.
What Does It Cost If You Need a Pro?
Labor pricing tracks the $25–$30/hour mean wages for installation, maintenance, and repair occupations published by the Bureau of Labor Statistics, plus company overhead and trip fees:
| Repair | Standard (2026) | Emergency / After-Hours |
|---|---|---|
| Spring replacement | $150 – $350 | $250 – $500 |
| Cable repair | $90 – $200 | $175 – $350 |
| Opener gear/motor repair | $100 – $250 | $200 – $400 |
| Opener replacement | $250 – $550 | rarely done after-hours |
| Travel limit / minor adjustment | $75 – $150 | $150 – $250 |
Emergency calls typically add $75–$150 or a 1.5×–2× multiplier. If the door is stuck closed and you can wait until the next business day, scheduled service saves real money. Full pricing details: garage door repair cost guide.
Frequently Asked Questions
Why won’t my garage door open? Start with the simple causes: power to the opener, remote battery, lock mode, and a disconnected trolley. If those check out and the door feels very heavy or you recently heard a loud bang, look for a gap in the spring above the door — a broken spring is the most common serious cause.
How do I open my garage door manually? With the door fully closed, pull the red emergency-release cord to disconnect the opener, then lift from the bottom with your legs. Only do this if the springs are intact — a broken spring leaves you lifting the door’s full 150–300 lb weight.
Why does my opener run but the door won’t move? Either the trolley is disconnected (someone pulled the red cord — re-engage it) or the opener’s drive gear has stripped. If re-engaging the trolley doesn’t fix it, the opener needs repair.
What does a broken garage door spring look like? A torsion spring shows a clear 2–3 inch gap in the coil above the door. Other signs: a recent loud bang, loose or hanging cables, a door that lifts a few inches then stops, or a door that’s crooked or impossibly heavy.
Is a garage door that won’t open an emergency? Only if your car is trapped and you truly need it. Emergency service adds $75–$150+ to the bill; if you can wait for a scheduled next-day appointment, you’ll pay standard rates for the same repair.
Last updated: June 2026. Spring and hardware safety guidance per the U.S. Consumer Product Safety Commission and DASMA technical data sheets; labor cost benchmarks from the U.S. Bureau of Labor Statistics. Never force a door with a broken spring. For informational purposes only.