After accident, passenger headlight unit and a headlight control unit ??? were replaced. Ever since then both headlights are very dim. They used to be much brighter before the accident. It's as if they are on low power. I have tried different halogen bulbs and also LED bulbs. The LED bulbs are slightly brighter than the halogens but they are still dim.

It was suggested that the new control unit (I think that was what the body shop said was fitted. It seemingly had to get welded in) may be set on low power to increase bulb lifespan.

Where would I look with VCDS to set headlight power back to full??

Any other suggestions??