I just had a tow bar installed on my 2023 Octavia vrs by the dealer, and since discovered a new option with the reversing camera. After selecting this option, a new on screen overlay will superimposed on the rear camera image, being a green triangle with its apex at the tow ball. I do not think my car has trailer assist installed at factory when new, and I don’t think this is it . Short of hiring a trailer to try this, can someone please tell me what this does? Is it just a new on screen overlay? If so how is it useful?

I will try to upload a photo of the new icon if I can figure out how to do this here…

How wide is the base (furthest from tow ball) of the triangle? - purely a guess, but I'd suggest it is a guide for trailer, when reversing, to prevent jack-knifing.

Hello Henry, have you confirmed function of new option on reversing camera yet?

It is just an extra overlay option on the reversing camera image. It does not confer additional function. I am not really sure how this overlay is helpful TBH

Depending on the width of the base of the triangle, I'd guess it's a guide, like the normal reversing tramlines - keep the trailer within the triangle while reversing.