I do not have a service manual for my 2002 SLK320, so can someone advise on how to adjust the headlights up and down? Much appreciated........

 

looking at the back of the passenger side, there are two adjustments, the one on the left of the headlight access cover is up and down the one on the right adjusts side to side. they are marked on the adjustment screw. I use the garage door at about 25' to adjust lights to preference.