There is a hole to the outer section of the headlight (middle outer section as you are looking at it)
you need a VERY LONG phillips screwdriver (I think it is around 60cm long). Having said that I have
tried and I can see the screw turning, but the lights are not being adjusted no matter what. I rang my local hyundai service
and they would not tell me over the phone, they told me to bring it in, but I then changed my light bulbs
to xenon HID so I think they won't help me. THe i30's headlights as a car in general are VERY low and very
dim, I think it also has to do with the cars design. The only way I solved it is to get XENON HID kit. Very easy to install.