When a garage door won’t open, the cause is usually simple and safe to check: the opener lost power, the wall button is in “lock” mode, the remote battery is dead, or the safety photo-eye sensors at the bottom of the tracks are misaligned or blocked. Work through the checks below in order — most Houston homeowners find the problem before they reach the bottom. One thing you should never touch is the spring above the door or the cables running down the sides; those are under lethal tension and belong to a trained technician.
What you'll need
- A step stool
- A flashlight
- Fresh remote batteries
- A soft cloth
- A level (optional)
Recommended parts & supplies
- Garage door remote battery (usually CR2032/A23) — a dead remote battery is the #1 easy fix
- Universal garage door remote — if your remote is lost or failing
- Photo-eye safety sensors (pair) — if a sensor is cracked or water-damaged
- Garage door lubricant spray — frees a door that binds in the tracks
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Step by step
- 1
Confirm the opener has power
Start at the wall. Make sure the opener unit is plugged in — cleaning crews, kids, and vacuum cords knock these loose constantly — and that the outlet is live. Check your electrical panel for a tripped breaker feeding the garage. If a recent Houston storm cut power, some openers need to be re-plugged or reset before they respond again.
- 2
Check the wall button for “lock” or vacation mode
Most wall consoles have a lock button (sometimes a small key or padlock icon) that disables all remotes to stop someone opening the door from outside. If a light is blinking on the wall panel and remotes do nothing but the wall button still works, lock mode is almost certainly on. Press and hold the lock button for a few seconds to toggle it off.
- 3
Replace the remote and keypad batteries
If the wall button opens the door but the remote won’t, the remote battery is dead. Pop it open and swap in a fresh one — most take a small A23 or a CR2032 coin cell. Do the same for an outdoor keypad. This one cheap fix solves a huge share of “won’t open” calls.
- 4
Look at the safety sensors near the floor
Two small photo-eye sensors sit about six inches off the floor on each track. If they’re blocked by a bin, a bike, or a stray leaf pile, or knocked out of alignment, the door won’t close and sometimes won’t respond. Clear anything in the beam’s path and wipe each lens with a soft cloth. A solid, steady light on both sensors usually means they’re happy; a blinking light means they need realigning (see our sensor-alignment guide).
- 5
Check whether the door is off its track or binding
Look up at the rollers and tracks. If a roller has jumped out of the track or the door is visibly crooked, stop — do not force the opener, and do not pull on any cable. A door that is off track puts the whole system under uneven load. Note it and call a pro. If the door simply drags or squeaks but is still aligned, a shot of garage door lubricant on the rollers and hinges often frees it.
- 6
Try the manual release — but only if the door is DOWN
If the door is fully closed and you just need in, pull the red emergency release cord to disconnect the door from the opener, then lift by hand. Only do this when the door is all the way down. Never pull the release on a door that is partway open — if a spring or cable is the real problem, the door can slam down. If the door feels heavy, jerky, or won’t stay put when you lift it, let go and call a technician; that points to a spring, which you must not touch.
When to call a pro
Call a garage door professional the moment the problem points to the spring above the door or the cables running down each side — if the door feels extremely heavy to lift by hand, won’t stay open, slams down, hangs crooked, or you see a gap or snapped coil in the spring. Torsion springs and lift cables store enough energy to cause serious injury or death, and they must never be adjusted, loosened, or replaced by a homeowner. Also call if the door is off its track, or if the opener motor runs but the door doesn’t move at all after these checks — that can be a stripped opener gear or a broken cable, both jobs for a trained tech.
Get a free quote from a local pro
No obligation — a licensed, insured local Houston partner will reach out. Available 24/7 for emergencies.
Garage Door Won’t Open — FAQ
Why won’t my garage door open even though the opener runs?
Why do my remotes not work but the wall button does?
Is it safe to open my garage door manually?
More DIY guides
How to Realign Your Garage Door Safety Sensors (Photo Eyes)
The door goes down, then reverses back up and the opener light blinks. Nine times out of ten it’s the safety sensors. Here’s the safe fix.
Try the fix →How to Reprogram a Garage Door Opener and Remote
New home, lost remote, or a clicker that quit? Here’s how to pair a new remote, clear old codes, and reset the keypad — no ladder-top spring work involved.
Try the fix →How to Lubricate a Noisy Garage Door (and Quiet the Squeak)
That awful grind and squeak every morning is usually dry metal, not a broken part. Here’s how to lubricate the right pieces — and which one to leave alone.
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