Looking over parts to familiar myself more with the X5 system, I noticed the pressure switch. It doesn't seem to have a valve stem to push on does it? Does BMW require system evacuation to replace it? If so, it's the first for me. I've replaced leaking switches by unscrewing them and screwing on a new one.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)