Unless the battery died, then it would be hard to hear it anywhere...
Those couches eat small electronics... We had a TV remote get lost, so we just went and got a universal one, then moving the couch or something it fell out, so we had it again in case the other got lost, well, we lost the same remote again... Never found it since. We gave away our old couch and chair to make room for the new couch so it probably went with one of them, lol.