Nothing. No light, no click, no hum from the unit on the ceiling.
The door closes, touches the floor, then climbs straight back up as if it hit something. Nothing is in the way, the sensor lights are steady, and it has been doing this since the weather turned.
Halfway up, every single time, the door hesitates and there is a ratcheting sound from the motor head, then it carries on. A closer look shows a stretch of the belt where the teeth are worn almost flat.
The remotes only work from the end of the driveway now, and one of them disappeared with a set of keys last month. Inside the remote are tiny switches instead of a learn button, so excluding the missing one means resetting the switch pattern on every remote and the receiver.
After a cold night the door stays open until the garage warms up. There is frost on the sensor lenses and a ridge of salty slush piled against the brackets where the snow blower was parked.
The remote opens the door only when you are almost underneath it. From the end of the driveway you press five or six times and nothing happens.
There is a wireless symbol printed on the opener above the car, and the manual mentions an app, but the head unit has never been connected to anything. You downloaded the app once, it asked for a serial number and a network, and the moment passed.
After a week of lifting the door by hand you pressed the button, hoping it would catch. Instead the motor grinds, the trolley thumps against the end of the rail, and the little lever that should snap back stays stubbornly upright.