How to Test Your Garage Door’s Safety Features

Updated November 2026 · Part of our garage door safety guides

A garage door is the largest moving object in most homes, and it is built with safety features that only work if they are still working. A five-minute check once a month tells you whether the photo eyes, the auto-reverse, the balance and the release cord are all doing their jobs. Here is how to run it safely.

Something failed the test? See our sensor repair page or our opener repair page.

Why Test Every Month?

Safety features wear out quietly. A sensor drifts out of line, a limit setting slips, a spring weakens, and the door still seems to work. The first sign that something is wrong should not be the door closing on a bumper, a pet or a child. A monthly test, and another after any storm or repair, catches the drift early.

What You Need

• A flat board about 1.5 inches thick, such as a two-by-four laid on its side
• A clear garage floor with no vehicle in the door path
• Children and pets kept out of the area
• Your opener’s manual, in case a setting needs checking

Test 1: The Photo Eyes

1. With the door fully open, press the wall button to close it
2. While it is moving down, pass a broom handle or similar object through the beam. Do not use your hand or foot
3. The door should stop and reverse right away
4. Repeat from the other side of the door

Test 2: The Auto-Reverse

1. Lay the board flat on the floor in the center of the door path
2. Press the wall button to close the door
3. When the door touches the board, it should reverse
4. Remove the board before you reopen the door

If the door keeps closing on the board, stop using the opener and call. Do not adjust force or limit settings unless you are comfortable following your manual exactly.

Test 3: The Balance

1. Close the door fully
2. Pull the red release cord to disconnect the opener. Do this only with the door closed
3. Lift the door by hand to about halfway and let go slowly, with a helper nearby
4. A balanced door stays where you leave it

If it drops or feels heavy, a spring is probably weak or broken. See our spring repair page.

Test 4: The Manual Release and Wall Control

Confirm that the red cord disconnects the door and that it can be lifted by hand, then reconnect the opener following the manual. Check that the wall control works, and that its lock mode behaves as you expect, since a locked control disables the remotes. Replace remote batteries if the range has dropped.

What Your Results Mean

Safety Around Children and Pets

• Keep remotes and the wall button out of children’s reach
• Teach children never to run under a moving door
• Keep the wall control high enough that small children cannot press it
• Use the wall control’s lock mode when you are away
• Do not let children play with the red release cord

How Often Should You Test?

Monthly is a good habit. Run the full set again after any storm, after a repair, and whenever the door behaves differently. Our hurricane guide lists what else to check before storm season.

Related Services and Guides

• Sensor repair
• Opener repair
• Garage door maintenance
• Garage door sensor not working?
• Hurricane season and your garage door
• Garage door won’t close all the way or stops partway

Frequently Asked Questions