Symptom check
The garage door went up when nobody pressed anything
A garage door that opens on its own is getting a signal it believes, most often from a remote pressed in a pocket or car, a shorted wall button, or a keypad with rain inside. Unplug the opener tonight, then work through the list.
Updated
Lock it down for tonight
Close the door, unplug the opener at the ceiling, and slide the manual lock into the track if the door has one, remembering to pull it back before the opener runs again. With the power off the opener cannot lift the door, and the latched trolley helps hold it down until morning.
What usually causes it, in order
Work down this list in order, because the first few are signals the opener is right to obey and only the last is a fault inside it.
- Most common
A remote being pressed without anyone noticing
What you notice: Openings line up with someone leaving, driving past, or sitting on a bag, coat or console where a spare remote rides.
The repair: Find and pocket the spare, or erase lost and extra remotes and pair only the ones you keep. Garage Door Remote and Keypad Programming, from $105
- Common
A stuck wall button or a shorted wall wire
What you notice: The door runs with the house empty, the wall button feels sticky or cracked, or a staple pins the thin wire against a nail or metal.
The repair: Replace the wall control and repair or rerun the low-voltage wire to the opener head. Garage Door Opener Repair, from $155
- Common
Rain inside an outdoor keypad
What you notice: Openings come during or after storms, and the pad shows fog, rust or crust behind its cover.
The repair: Replace the keypad with a sealed one and mount it where the eave keeps rain off. Garage Door Remote and Keypad Programming, from $105
- Less common
Old remotes still in memory, or a neighbor on the same fixed code
What you notice: The house came with remotes nobody accounted for, or the opener dates from the era when remotes set their code with tiny switches.
The repair: Erase the opener memory and pair only your remotes; a switch-coded opener is worth replacing with a rolling-code model. Garage Door Opener Installation, from $545
- Less common
An app, schedule or smart home routine
What you notice: The door opens at a regular time, or the opener app history shows an open nobody in the house made.
The repair: Review shared users and schedules in the app, change the account password and delete routines you did not set. Garage Door Lock Repair and Security, from $115
- Less common
A failing logic board
What you notice: Openings continue with every remote erased, the keypad disconnected and a new wall button wired in.
The repair: Replace the logic board, or the opener on a model whose boards are no longer made. Garage Door Opener Repair, from $155
Safe checks before you call
Start with the opener unplugged, and plug it back in only for the tests that need power.
- Count the remotes in the house and cars, and look for one riding loose in a bag, coat or console.
- Press the wall button and see whether it springs back cleanly or stays down.
- Follow the thin wall button wire for staples driven through it or a spot where it rubs on metal.
- Flip up the outdoor keypad cover after rain and look for water, fog or corrosion.
- Open the opener app, if you use one, and read its history and list of shared users.
- Write down the times the door opened, because a pattern points to a schedule, a person or the weather.
Can a stranger open my garage door?
Rarely, if the opener uses rolling codes, but an older opener whose remotes set their code with small switches sends the same code on every press.
Anyone with matching switches, or a remote copied from yours, can run a switch-coded door. Remotes you never paired are the bigger risk anyway: a sold car with a programmed button, a lost remote, or the previous owner's spares in a drawer somewhere.
Erasing the opener memory from the learn button wipes every remote, keypad and car button at once, and then you pair back only what you hold. The opener light or LED confirms the erase on most models, and your manual gives the hold time.
Why the door opens by itself on stormy nights
If the door opens during storms, suspect the outdoor keypad first, because water across its contacts can register as a key press.
In the NOAA normals, Battle Ground logs measurable rain on about 179 days of the year and Longview on about 192, so a keypad on an exposed jamb stays wet for much of the winter. A pad that has started to fog or corrode keeps doing it; replace it with a sealed unit and mount it under the eave.
What the opener repair involves
We work from the outside in: erase and pair remotes, test the keypad, replace a sticking wall button, and check the wall wire run before we suspect the board.
If the opener still moves on its own with every input removed, the logic board is replaced, or the whole opener when no board is made for that model any more. On a switch-coded opener we price a current rolling-code unit beside the repair, along with any locks or security work you want.
Door opens by itself: questions and answers
Why does my garage door open by itself in the middle of the night?
Something is sending the opener a command it trusts. The usual sources are a remote pressed in a car or bag, a shorted wall button wire, rain in the outside keypad, or an app schedule. Unplug the opener for the night. In the morning, check those in order before suspecting the logic board.
Can a neighbor's remote open my garage door by accident?
On an older opener whose remotes set their code with tiny switches, yes, if their switches match yours. Current rolling-code openers make that very unlikely. If your remotes have a row of small switches under the battery cover, change the pattern now and plan on a newer opener.
Can rain in the keypad make my garage door open by itself?
Yes, water inside an outdoor keypad can bridge its contacts and send an open command, which is why some doors go up during or after a storm. Check behind the cover for fog, rust or crust. A keypad that has taken on water should be replaced and remounted out of the rain.
What should I do tonight if my garage door keeps opening by itself?
Close the door, pull the opener plug and push in the slide lock if the door has one. That keeps the door shut until daylight. Then erase the remotes, check the wall button and keypad, and call if it opens again once the opener is plugged back in.
Should I erase all my remotes if my garage door opened on its own?
Yes, it is the quickest way to rule out a lost, sold or spare remote. Erasing from the learn button wipes every remote, keypad and car button the opener knows, and you then pair back only what you hold. It also shuts out remotes a previous owner kept.
Where to go next
Nearby service areas
This call comes in from Ogden and North Garrison Heights, Walnut Grove, Battle Ground and the rest of our Washington service area.
Want a price before anyone drives over?
Call and describe what the door is doing, or text a photo of the door and the spring above it. You hear the likely repair and where its price starts, then decide.