7 Reasons Why Your Garage Door Opens by Itself

Ever come back home and notice the garage door is open? It’s likely not a ghost but one of the several common reasons below. You should fix your garage door right away as it can be a security risk when you’re not around.

Let’s get started.

1. Faulty Garage Door Opener

When your garage door opener has been damaged by a power surge or lightning storm, it can cause the logic board to malfunction. When you notice your garage door working erratically, it’s likely that the circuits have been damaged.

How to Fix

If you’ve narrowed down the problem to be your garage door opener, it’s best to call our garage door technicians to take a look at it.

2. Your Neighbors

It’s easy to blame your neighbors, but in this case, they may be to blame. If someone has programmed their garage door remote to the same frequency as yours, it will cause your garage door to open as well as theirs.

This only affects garage door openers that were manufactured before 1993.

How to Fix

Try changing your garage door opener frequency. You’ll have to refer to your manual for your specific garage door opener. You can learn how to program your garage door opener remote here.

3. Adjust the Limit Settings

Each garage door motor unit has travel limits that adjust how far the garage door travels. Normally they’re on the back panel, but some models have them on the bottom.

How to Fix

If your garage door touches the floor and reverses, the down travel limit setting needs to be decreased.

If the garage door stops above the floor, the down travel needs to be increased.

4. Faulty Control Wiring

Inspect the wires that are connected to your garage door opener and garage door sensors. See if there are any broken wires or if there are any bare spots that may cause a short circuit.

How to Fix

Unless you have experience with electrical wiring, it’s a good idea to leave this job to a professional. If you notice any bare or broken wires, give your local repairman a call to come and fix the problem.

5. Stuck Garage Door Opener Buttons

Inspect your garage door remote and the wall buttons to see if they’re working properly.

How to Fix

You can replace the batteries on your garage door remote if you suspect it’s the issue. Old batteries have been known to cause issues with opening and closing the garage door.

If your wall panel button doesn’t work correctly, then you’re going to need to call a professional to fix the issue. Your garage door opener’s circuit board may need to be replaced.

Get a free quote from our garage door technicians.

6. Garage Door Sensors Are Misaligned

Every garage door is required to have safety sensors that allow the garage to fully close. If they become misaligned, they won’t allow the garage to function properly.

How to Fix

You can easily realign your garage door sensors by yourself.

7. Your Springs Are Unbalanced

If your garage springs are unbalanced, your garage won’t be able to function properly. Before you inspect the garage door, engage manual mode and turn the power off.

How to Fix

Open your garage door to the halfway point (with manual mode engaged) and let go of the garage door. If it crashes into the floor, then the torsion spring is unbalanced.

You can adjust your garage door spring yourself, but it can be dangerous and should be done by a professional if you don’t know how to do it properly.

Final Words

If nothing has worked, your best bet is to call a garage door technician to come and take a look at it. You’re going to want to have your garage door fixed ASAP so you can leave your home without worrying about it opening when you’re not around.

About Roy Cohen

I'm Roy, founder of Hack My Garage. I started out like most not knowing how to hammer a nail, but now I know more than most people about home improvement and DIY. I want to spread my wealth of knowledge with the world and hope to make it a better place.