2009 S80 Headlight question

[fxral]

Just bought 2009 S80 with the active dual xenon option.
It appears that the Rt headlight is missing the 2 modules mounted on the bottom of the headlight assy.
The hi beam works but not the lo beam.My question is - do I need both modules for the lo beam to work?
Looking online the ballast control module is relatively inexpensive whereas the control unit runs a few $.
I'm more interested in getting the lo beam working,could live without the active feature.
Also odd that most listings are across the pond.?
Appreciate any help/suggestions.
Thank you