This is the first we've heard of this on the forum. The only other discussion has been "is there a way to disable the beep". It doesn't look like there is any way to modify or eliminate the beeping and it is interesting that Nissan has limited the same beeps on the 2014 Rogue. You would think there would be a firmware update that would modify the tones. If the sound keeps acting up, I'd have the service department look into the problem since there isn't anything obvious you can do.
You can disconnect the wiring harness that sits behind the rear bumper in about 15 minutes. First thing I did when I bought mine, love the silence.. Let me know if you want the step by step and I'll post it.