horizontal (left/right) headlight adjustment on 2010 Subaru Impreza Outback Sport

found vertical adjustment, need to adjust left (horizontal) any idea where to start?

Asked by for the 2010 Subaru Impreza Outback Sport
Should still be under warranty, too new a car for after market information to be up to date yet!
1 more answer
Should not have to adjust headlamps unless vehicle has been in a collision, then it is the body shop responsibility to do so. It requires special aimers and proper procedures.