Thanks for your response twin turbo

I did the clutch without removing the compressor so the AC gas levels would be the same as when it was working correctly.

I’ve just taken it to a shop to get it Re-gassed again anyway but their machine would not add any gas to the system & he really didn’t know much about BMWs.

I only can check the low pressure port & it remains at 35psi clutch engaged or not so although I’m getting the click maybe the compressor isn’t engaging.

I have INPA & it is not detecting any faults & It’s showing when compressor is on & off when the buttons are depressed at the panel.

Any other suggestions?

Would the expansion valve suddenly fail & cause this issue?