Nissan Rogue beeping odd tones

Could be a BCM problem. Has the vehicle experienced any voltage drop outs, battery replacement or disconnect, or spikes from a bad alternator or jump start? If so a trip to the dealer for a programming flash might be in order here.

Over time, sensors can go bad, and Nissans have had this problem. It might just be a seat belt or a door ajar sensor. Check these out if you know how, or have a mechanic do it. But the mechanic might just find a defect as Gene said. This often occurs when you change batteries and don't use a memory saver that provides power to the vehicle when the battery is disconnected. Reconnecting under this condition often blows something.

I wish that was it. All my sensors and visual display and sound fine. These are 3 different tones. I swear someone put a casio watch from the 80s under the dash. But thank you for your suggestions.

Still could be the BCM. I just thought of something else, if it has an HVAC system it could be servos or blend doors trying to get reset and not succeeding.