I'm having the same problem with no pressure. I emptied a can of 134 in it and still no pressure. I did notice that it all leaked out on the rear drivers side tire. Turns out there's a blower and hoses back there under the jumper seat. So I figure I'm not getting any pressure because of the leak, therefore the clutch isn't engaging. Anyway I'm in the process of taking that apart now to try and find the leak. I'll keep you posted

 

I don't think I have the rear air/heat on mine. No second controls on it.

 

Figured out the leak is coming from the line above the rear shock on the drivers side. Seems like an expensive pain in the ****. I'm just gonna leave it alone. I'm in Ohio so in two months I won't even need it. I'm on the bike most of the year anyway

 

occasionally we have used it to head up to the cabin, a 4-5 hour drive and AC helps. We just got a newer 2008 Trail Blazer so maybe the Disco will be staying home more now.