Yay! After 2 years, the left-side control of my reclining couch repaired itself!
Laziness totally pays off!
And so does thriftiness!
Two years ago, I spilled some drink onto the control. From that point forward, one of the buttons stopped working. I used a workaround by pressing two other buttons. I also looked for a replacement, but I decided they were too expensive.
I also opened the control to see if there was an easy fix, but there wasn't.
So I used the workaround all this time, but today I found that the button that did not work anymore works.
So if someone gets on your case to repair something, just say that you're giving it a good two years to see if it will repair itself. 
