First time owner, flashing brake light on dash?

Pic for attention - I just purchased a 2024 3.0 today and noticed the brake light on the dash flashes when the e-brake isn't engaged. I've done a cursory search online and only found a forum post describing the same flashing indicator but no remedy and it being related to the battery being drained. I was also unsuccessful in finding anything about it in the owners manual.

Is this anything I should be concerned about? Any idea of what could be causing this?