The headlight cluster itself cannot be the culprit here, rather the connector, the wiring or the lever. Or any other electronic part (BCM?).
Attached 3 eLearn docs for the main beam, dipped headlights and the side / parking lights for the 2008+ 500.
However preparing the files I've noticed a strange thing:
in the main beam doc there are two very similar wiring diagrams. Looking at the functionnal description it seems that the bottom one is valid (fuse F87). I tried to find another doc that wiring diagram could come from, but couldn't find anything that would 'fit'.
I wasn't adding the indicators nor fog lights docs as they are not in the same cluster, so rather are not related.