Garage Door Remote Not Working: A Working Diagnosis
If the wall button works and the remote does not, the problem is the remote: battery, pairing, or the remote itself. If neither works, it is the opener. Poor range is most often a damaged antenna wire or interference from an LED bulb fitted inside the opener.
The thirty second test
Press the wall button.
Wall button works, remote does not: the opener is fine. It is the remote, its battery, or the pairing.
Neither works: the opener has a problem. Check power first, including whether the garage outlet is on a tripped GFCI.
If it is the remote
Battery. Remote batteries fail suddenly rather than fading. Replace it before assuming anything else, even if the LED still lights, because the LED needs far less power than the transmitter.
Pairing. Remotes lose their pairing after a battery change on some models, after a power cut, or when somebody has pressed the learn button. Re-pairing takes under a minute: press the learn button on the opener, then press the remote button within thirty seconds.
The lock button. Most wall controls have a lock or vacation mode that disables remotes while keeping the wall button working. It is easy to press without noticing and it produces exactly this symptom.
The remote itself. Buttons wear out and remotes get dropped. If a second remote works and this one does not, you have your answer.
If it is a range problem
Range problems are their own category and they have two common causes.
The antenna wire. A short wire hangs down from the opener housing. It should hang freely and be undamaged. Tucked up, coiled, or broken, and range collapses. This is a free fix.
LED bulbs. This one catches people out constantly. Many LED bulbs emit radio interference in the same band the remote uses. Fitting an LED bulb in the opener and then losing remote range is an extremely common sequence. Use a bulb rated for garage door openers, or go back to incandescent, and the range usually returns immediately.
Other causes: a new WiFi router or a neighbour’s device on a nearby frequency, metal siding or a metal-clad garage, and a detached garage where the distance is genuinely marginal.
If neither the remote nor the wall button works
Power. Check the plug and the outlet. Garage outlets are frequently on GFCI circuits that trip and stay tripped without anyone noticing.
The wall control wiring. Two thin wires run from the wall button to the opener along the wall and ceiling. They get stapled through, caught, and chewed.
The logic board. After a power surge, a dead board is common. It is a repair rather than a replacement on most units, in the $100 to $350 range.
When to replace instead of repair
If the opener was made before 1993, it has no photo eye safety sensors and should be replaced regardless of what is wrong with the remote. If parts are no longer made for the model, or the repair quote approaches half the cost of a new unit, replacement is the better spend. New openers run $281 to $630 installed.
Related questions
Why does my remote only work close to the door?
Most often a damaged or badly routed antenna wire hanging from the opener, or radio interference from an LED bulb inside the unit. Try a standard incandescent or a garage-door-rated LED and see if the range comes back.
Will any universal remote work with my opener?
Only if it matches your opener's code system. Brands have used several over the years and they are not interchangeable. The model number on the motor housing tells you which one you need.
My remote worked yesterday and not today. What changed?
Battery, almost always, and the failure is usually sudden rather than gradual. After that, check whether anyone pressed the lock or vacation button on the wall control.