replacing lumbar pump 2017 e550

The mechanic can not get to it for 3 weeks, and I am somewhat capable.
I don't want to damage it.
I have the plastic trunk latch cover removed,
three push pins removed.
the front cover (covering the electrical components.
The rear of the cover pulls away, but near the strut, I cant get it to move.
Any pictures or instructions would be helpful.


