Are the Kamiq headlight units accessible?

Still waiting for a diagnostic on the headlight range adjuster not working, but I wondered if anyone knew if once the headlight units are out they can be disassembled? 
I have the workshop manual, but when looking at pictures the units look completely sealed. 
The wait in getting it seen has me worrying if it's the motors they'll want to replace the whole units. It is covered under the used approved warranty, but unsure how straight forward it will be.