so I am chatting with the poster of that thread, never the less it looks like the issue is different.
Anyhow, I discovered another random thing today:
I finally got it (partially) into access mode but it only lowered the front of it, the rear remained at standard height... I pushed the lever up and the front got back into standard height with no issues at all.
The compressor pumped for a few seconds and everything seemed normal... fault returned after a few minutes of driving. The weird thing here was why did the rear remained at standard height! Any ideas guys?