2017 raptor

Startup my 2017 and this dinging sound begins intermittently. Putting the truck into reverse seems to make it a bit louder but when I shift back to park it stops until I re-engage the transmission to drive. Anyone know what this is?

I have a fully loaded pristine supercab style 2017 Raptor with 34,500 miles. It's lightning blue with grey accent, 802A, moonroof, and tech package. Includes power locks, power windows, sunroof, am/fm, cd, aux audio, satellite radio, a/c, rear defroster, cruise control, abs brakes, leather...