I have changed the lux setting on my auto lights, so basically they revert back to dipped beam earlier as these led lights can dazzle like a gud un for the poor unsuspecting oncoming drivers. And another one with the front lights is that you can change the mph threshold for the full beam activation, basically because (when I travel to work, currently I'm WFH still since march) I travel a lot of small country lanes to and from work, so I have reduced the mph threshold so the full beam comes on at a lower speed, rather than the factory set speed, iirc it's set at 40 ish plus mph
Also I have enabled the "other" rear fog light so I have one on both sides now rather than just one side. (You should find the bulb is already fitted)
Also useful for summer or when a rain shower occurres out the blue is the remote button long press to lower or raise all the electric windows while simultaneously locking or unlocking the car doors.
There is a stereo enhancement, iirc it adds an extra bass control to the standard stereo system.
These are just a few of those that"may" be possible, it all depends on the factory fitted equipment you already have. Good luck and enjoy, plenty of info on here and some stickies with lots of info.