The issue here is, what does it mean?
As you’ve mentioned, you’re not really supposed to be in that menu.
But you’re unfortunately at the point where, if it actually is something that needs to be checked and not just some minor software glitch, it would be in your best interests to have it taken care of. Or at least checked out.
Be upfront with having gone into the menu and that (hopefully) you didn’t do anything other than see the alert. I mean otherwise, you can’t explain why you’d know.
Just the other week, I was also in that menu after exhausting multiple attempts to fix an issue with my mirror. But nothing in there was useful in that regards. In fact, I find most of it not very useful as I’m not a mechanic. The mirror issue eventually cleared on its own.
Like you, I did find an alert that related to the trunk issue I had for a while, but nothing definitive. The issue was basically that I couldn’t unlock the car from the trunk area, including opening the trunk. In order to use my phone key, I had to be within range of the door/center Bluetooth antennae. The alert was that last software update couldn’t update the module. I suspect it was related, but that was about all. Since I had that issue for a long time, I didn’t need to mention going into the service menu when making the service request, especially since it was the mirror that started this.