Flashing Red Arrows

[Hambone]

So I turn the truck on (2023 Lariat Hybrid) and on the display screen is a white square with a simulated overhead view of the vehicle with red arrows running across the bottom of the screen. What is it trying to tell me??
Shut the truck off for a few hours and now its gone.

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[Darnon]

On the radio screen, I presume? Probably the rear cross traffic alert.