2019 Infiniti QX60 FORWARD COLLISION AVOIDANCE

The emergency braking system occassionally engages when I am driving. On about four occassions I was driving and the alarm began beeping. The car suddenly began braking. Nothing was directly in front of my vehicle that should have triggered the system. The most recent incident was yesterday, 10/5/21. This afternoon on my way home from work, the following warning appeared after a brief beeping sound, " FEB. Warning. See Owners Manual." A symbol was also lit on the dashboard. This warning remained on until I turned my vehicle off once I arrived home. I have not restarted the vehicle to see if the warning reappears. There have also been at least two instances of the rear sensor going off.