Badly leaking valve block. My fault since I pinched an o-ring when rebuilding it. It worked fine long enough for me to get to work, and then was unhappy when I was packing up to return home. Once it was on bumps it over extended a height sensor and killed it. I’m to blame to for creating the problem, but the get of jail free tool didn’t work for this one! This is why I never do preventive maintenance without a few hundred miles of test drives ahead of a trip.

 

You couldn't pump it up in Build Mode?