LD=Legal DIsclaimer.
The lights on lock/unlock seems to be a function of whether or not I leave the lightswitch on low beams when I turn the car off. So, if the lightswitch is off position, then no lights on unlock. If lights are on low beam then they come on upon unlock. I don't use Auto setting so no idea what happens on that setting. I will keep monitoring this as one may get more attentive to these features once you change the settings and misinterpret what actually happens.

For example, after I changed the rear hatch, my son one day said that the button on the hatch did not work but I have not had that happen. I know the button does not work if the lower hatch is not properly closed. So, like I said, paying more attention may up the awareness of behavior.

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.