AFS stays moving during the driving : Any Ideas ? help please

[ned1900]

Because of water I have to replace the right headlight of my BMW F10  - 2013 

This light comes with AFS ( I have coded it and initialize it via ISTA ).

I have now this Problem : During the driving and without turning the steering. stays AFS moving to the right and to the left.  

So is there any help ? any ideas ? or solution ? 

and how can I make the movement of AFS less sensitive ? if that can


Thanks in advance.

Reagrds