Advice from another forum....while under vacuum, used the negative pressure to fill refrigerant from the manifold to get the compressor to engage. $10 bux spent, back to ice cold air.....in case someone else gets stuck.
Its a shame hobbyist cant work on their own systems across the pond...
New to me 2004 Z4 E85 3.0. The air conditioner was blowing tepid when i first got it. I put gages on the system and it showed low. Had the refrigerant pumped down, then went home and pulled a vacuum on the system for a few hours and it has been holding under vacuum for a few days so no leak...