I am pretty certain this doesn't relate but I had an issue where on my way from my Gf's house and all of the sudden the trans wouldn't shift past 2nd gear. Made an appointment at the dealership next day. They ended up replacing my egr valve. Since then its been running fine. I hope you get it resolved.
My Lib will be going back in for A/C and heat issues it is actually the fan / vent control the fan will blow on low or high setting fine, but it will only my feet and the window but not on my face. You got me on this.
When you get knee-deep in a situation, floor it.