Garage Door Won't Open With Remote but Works With Wall Switch - What's Wrong?
This one is actually useful information. The fact that the wall switch works but the remote doesn't tells you something pretty specific - the opener motor is fine, the springs are fine, the door itself is fine. Everything mechanical is working. The problem is somewhere in the signal chain between your remote and the opener's receiver.
That narrows it down a lot. Here's what's actually going on.
Battery first - but check it properly
I know you already thought of this. But there's a right way and a wrong way to check it.
Swapping the battery and trying again isn't always enough. If the new battery sat in a drawer for a year, it might also be weak. The contacts inside the remote - those small metal tabs the battery presses against - can corrode, and a corroded contact prevents power from getting through even with a fresh battery.
Take the back off the remote. Look at the contacts. Any green tint, white powdery buildup, or dark discoloration? Clean them with a cotton swab and a drop of rubbing alcohol. Let it dry. Put in a brand new battery from a fresh pack. Try again.
Also confirm you're using the right battery type. Most remotes take a 2032 coin cell or a 9-volt. Check the inside of the battery compartment if you're not sure.
Remote needs to be reprogrammed
The opener's memory can get wiped - power outage, surge, someone accidentally held the Learn button. When that happens, your remote is no longer in the system. It sends the signal, the opener doesn't recognize it, nothing happens.
Find the Learn button on the motor unit. It's usually on the back panel or under the light cover - small square button, often colored differently depending on brand. Press and release it. You have about 30 seconds. Press and hold your remote button until you see the opener light blink or hear a click. That's confirmation it paired. Try it.
If it pairs fine but stops working again after a day or two - something is clearing the memory repeatedly. Could be a power issue, could be a failing board. But if it pairs and holds, you're done.
The antenna wire is messed up
The opener has a small antenna wire that needs to hang freely downward from the motor unit to receive the remote's signal properly. If that wire got coiled up against the housing, taped back, or damaged - range drops dramatically or cuts out entirely.
Look at the motor unit. There should be a thin wire hanging straight down from it. If it's tucked up, uncoil it and let it hang. If it's damaged or cut, that's why the remote isn't reaching.
The wall switch bypasses this entirely - it's hardwired. That's why the switch works and the remote doesn't when the antenna is the problem.
Signal interference
Radio frequency interference from other devices can block the remote's signal from reaching the receiver. The remote sends, the opener just doesn't hear it through the noise.
LED bulbs are a surprisingly common cause. Certain LED bulbs in the opener unit itself give off RF interference that jams the remote signal. If you recently changed the light bulb in the opener to an LED and the remote stopped working around the same time - that's almost certainly it. Swap it for an incandescent or an LED specifically rated as garage door opener compatible.
Other interference sources: new WiFi router nearby, baby monitor, some smart home ↗ devices, certain fluorescent shop lights in the garage. If something new showed up in the garage or nearby around the same time the remote stopped working, that's worth considering.
Remote is just dead
Remotes don't last forever. The circuit board inside fails eventually - especially on remotes that are 8-10+ years old, have been dropped multiple times, or got wet at some point. When the board goes, the remote sends nothing regardless of what battery you put in it.
If you've gone through battery, reprogramming, antenna, and interference and the remote still won't work - try a different remote. Borrow one from the same opener brand if you have another door, or get a cheap universal remote ($15-30 at any hardware store) and try programming that. If the second remote works, your original is dead.
Receiver on the opener is failing
Less common but it happens - the receiver module inside the opener that picks up the radio signal can fail. When it does, no remote will work. Wall switch still works because it's wired directly, bypasses the receiver completely.
Here's how to confirm it's the receiver and not the remote: try multiple different remotes. If none of them work - original remote, replacement remote, neighbor's remote that you know works on a similar opener - and the wall switch still works fine, the receiver is the problem.
On some opener models the receiver is a replaceable module. On others it's integrated into the logic board. A tech can tell you which yours is and whether it makes sense to repair or replace the unit.
Range got shorter but not gone
Slightly different situation - the remote works but only from right in front of the opener, where it used to work from the street or the end of the driveway.
This is usually the antenna or interference. Antenna fix is free - just make sure it's hanging straight. Interference fix depends on finding the source.
It can also be a weak battery that's not dead but not strong enough for distance. Fresh battery from a new pack, not one that's been sitting.
Occasionally it's the receiver starting to go - range drops before it fails completely.
Car's built-in remote specifically stopped working
The HomeLink or similar system built into your car's visor is a different situation than a handheld remote. These need to be re-paired if the opener was replaced or the opener's memory was cleared.
The pairing process is different from a handheld remote. Usually involves holding the car button and the opener's Learn button simultaneously. Your car's manual has the exact steps for your specific vehicle.
If you have an older car and a newer opener - cars from the mid-90s and earlier use fixed code systems that won't pair with modern rolling code openers. That's not a malfunction, it's a compatibility issue. A handheld remote is the solution in that case.
Wall switch works, remote doesn't - almost always battery, programming, antenna, or interference. Work through those four in that order and you'll solve it most of the time without spending anything.
If none of those fix it and a different remote also won't work - receiver issue, call a tech.
GarageDoorRepairz can sort this out fast if you're going in circles. Sometimes quicker to have someone look at it than spend another hour troubleshooting.