Keep a Garage Door Opener Working: Tracks, Sensors, and the Reverse Test

An opener is simple machinery that works hard every day. Keeping it in good shape comes down to a repeatable set of checks, most of them yours to do and a few that belong to a trade. Put the list in your records or on the garage wall, and walk it at the same point each season.

Look at the door and its track

With the door closed, check the track for loose bolts, bent sections, and debris. Watch the rollers as the door moves. They should run smoothly in the track without catching. Check the hinges and the bottom seal. Wipe the track clean and lubricate the rollers and hinge pivots with the product the manufacturer names in the manual.

Test the balance

Disconnect the opener from the door using its release cord. Lift the door by hand to about waist height and let go. A door in balance should stay roughly where you left it. If it drops or climbs sharply, stop there and call a trade. Spring tension is not a task for the homeowner to adjust.

Check the sensors

Clean the lenses of the safety sensors near the floor on each side of the door. Make sure they face each other and that their indicator lights show the expected state. A sensor knocked out of line will stop the door from closing, which is the safety system doing its job, but it will also block daily use until the alignment is fixed.

Run the reverse test

Place a stiff board flat on the floor in the closing path. Close the door using the wall button. The door should reverse when it meets the board. Repeat the test if the opener has a force adjustment and you have changed it. If the door does not reverse, do not use it until a trade has corrected the system.

Keep the controls and the log

Replace remote batteries when the remote's range drops. Check the keypad and wall control for sticking. Keep a simple log with an entry for each check and what you found. The log tells a trade what has changed since the last visit, which shortens the call.

For the typical service life of a garage door opener and when to plan for a replacement, see Garage Door Opener: typical service life and when to plan.